chore(lander): removed old networking code

.woodpecker/build.yml

@@ -39,8 +39,7 @@ pipeline:
       - minio_access_key
       - minio_secret_key
     when:
-      branch:
+      branch: dev
-        exclude: [ release/* ]
       event: push
 
   publish-rel:

CHANGELOG.md

@@ -7,6 +7,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased](https://git.rustybever.be/Chewing_Bever/lander/src/branch/dev)
 
+### Added
+
+* LNM - Lander Network Module
+    * Rewrite of the event loop & HTTP loop
+    * Fully independent library
+    * Numerous improvements
+        * Streaming of headers
+        * Allow custom & an arbitrary number of response headers
+        * Better API for adding routes
+        * State machine HTTP loop
+
 ## [0.2.0](https://git.rustybever.be/Chewing_Bever/lander/src/tag/0.2.0)
 
 ### Added

Makefile

@@ -39,7 +39,11 @@ objs: $(OBJS)
 liblsm:
 	$(MAKE) -C lsm
 
-$(BIN): liblsm $(OBJS)
+.PHONY: liblnm
+liblnm:
+	$(MAKE) -C lnm
+
+$(BIN): liblsm liblnm $(OBJS)
 	$(CC) -o $@ $(OBJS) $(_LDFLAGS)
 
 $(BUILD_DIR)/$(SRC_DIR)/%.c.o: $(SRC_DIR)/%.c
@@ -68,7 +72,7 @@ run: $(BIN)
 valgrind: $(BIN)
 	LANDER_API_KEY=test \
 		LANDER_DATA_DIR=data \
-		valgrind '$(BUILD_DIR)/$(BIN_FILENAME)'
+		valgrind --track-origins=yes '$(BUILD_DIR)/$(BIN_FILENAME)'
 
 .PHONY: test
 test: $(TARGETS_TEST)
@@ -107,12 +111,14 @@ $(BUILD_DIR)/$(TEST_DIR)/%.c.o: $(TEST_DIR)/%.c
 lint:
 	clang-format -n --Werror $(SRCS) $(SRCS_H) $(SRCS_H_INTERNAL)
 	make -C lsm lint
+	make -C lnm lint
 	make -C landerctl lint
 
 .PHONY: fmt
 fmt:
 	clang-format -i $(SRCS) $(SRCS_H) $(SRCS_H_INTERNAL)
 	make -C lsm fmt
+	make -C lnm fmt
 	make -C landerctl fmt
 
 .PHONY: check
@@ -129,12 +135,14 @@ check:
 		-j$(shell nproc) \
 		$(SRCS)
 	make -C lsm check
+	make -C lnm check
 	make -C landerctl check
 
 .PHONY: clean
 clean:
 	rm -rf $(BUILD_DIR)
 	$(MAKE) -C lsm clean
+	$(MAKE) -C lnm clean
 	$(MAKE) -C landerctl clean
 
 .PHONY: bear

config.mk

@@ -7,9 +7,9 @@ SRC_DIR        = src
 TEST_DIR       = test
 THIRDPARTY_DIR = thirdparty
 
-INC_DIRS  = include $(THIRDPARTY_DIR)/include lsm/include
+INC_DIRS  = include $(THIRDPARTY_DIR)/include lsm/include lnm/include
-LIBS      = m lsm
+LIBS      = lsm lnm
-LIB_DIRS  = ./lsm/build
+LIB_DIRS  = ./lsm/build ./lnm/build
 
 # -MMD: generate a .d file for every source file. This file can be imported by
 #  make and makes make aware that a header file has been changed, ensuring an

include/http/res.h

@@ -24,8 +24,11 @@ typedef struct http_response {
   size_t head_len;
   size_t head_written;
   http_body body;
-  http_response_header headers[4];
+  struct {
-  size_t header_count;
+    http_response_header *arr;
+    size_t len;
+    size_t cap;
+  } headers;
 } http_response;
 
 /**

include/http/types.h

@@ -125,7 +125,9 @@ typedef enum http_header {
   http_header_connection = 0,
   http_header_location,
   http_header_content_type,
-  http_header_content_disposition
+  http_header_content_disposition,
+  http_header_server,
+  http_header_content_length
 } http_header;
 
 typedef enum http_body_type {

include/lander.h

@@ -1,9 +1,12 @@
 #ifndef LANDER
 #define LANDER
 
-#include "http_loop.h"
+#include "lnm/common.h"
+#include "lnm/http/loop.h"
 #include "lsm/store.h"
 
+#include "http_loop.h"
+
 extern http_route lander_routes[6];
 extern const char lander_key_charset[];
 
@@ -31,44 +34,40 @@ typedef enum lander_entry_type : uint8_t {
 
 void *lander_gctx_init();
 
-void *lander_ctx_init();
+lnm_err lander_ctx_init(void **c_ctx, void *gctx);
 
 void lander_ctx_reset(lander_ctx *ctx);
 
 void lander_ctx_free(lander_ctx *ctx);
 
-bool lander_get_index(event_loop_conn *conn);
+lnm_http_step_err lander_get_index(lnm_http_conn *conn);
 
-bool lander_get_entry(event_loop_conn *conn);
+lnm_http_step_err lander_get_entry(lnm_http_conn *conn);
 
-bool lander_post_redirect(event_loop_conn *conn);
+lnm_http_step_err lander_post_redirect(lnm_http_conn *conn);
 
-bool lander_post_paste(event_loop_conn *conn);
+lnm_http_step_err lander_post_paste(lnm_http_conn *conn);
 
-bool lander_post_paste(event_loop_conn *conn);
+lnm_http_step_err lander_stream_body_to_entry(lnm_http_conn *conn);
-
-bool lander_post_redirect(event_loop_conn *conn);
-
-bool lander_stream_body_to_entry(event_loop_conn *conn);
 
 bool lander_stream_body_to_client(event_loop_conn *conn);
 
-bool lander_post_redirect_body_to_attr(event_loop_conn *conn);
+lnm_http_step_err lander_post_redirect_body_to_attr(lnm_http_conn *conn);
 
-bool lander_remove_entry(event_loop_conn *conn);
+lnm_http_step_err lander_remove_entry(lnm_http_conn *conn);
 
-bool lander_post_file(event_loop_conn *conn);
+lnm_http_step_err lander_post_file(lnm_http_conn *conn);
 
 /**
  * Store the requested header as an attribute, if it's present.
  */
-void lander_header_to_attr(http_loop_ctx *ctx, const char *header,
+void lander_header_to_attr(lnm_http_loop_ctx *ctx, const char *header,
                            lander_attr_type attr_type);
 
 /**
  * Store the attribute's value as the provided header, if present.
  */
-void lander_attr_to_header(http_loop_ctx *ctx, lander_attr_type attr_type,
+void lander_attr_to_header(lnm_http_loop_ctx *ctx, lander_attr_type attr_type,
-                           http_header header_type);
+                           lnm_http_header header_type);
 
 #endif

lnm/Makefile

@@ -0,0 +1,127 @@
+# https://spin.atomicobject.com/2016/08/26/makefile-c-projects/ was a great
+# base for this Makefile
+
+-include config.mk
+
+LIB := $(BUILD_DIR)/$(LIB_FILENAME)
+
+SRCS != find '$(SRC_DIR)' -iname '*.c'
+SRCS_H != find include -iname '*.h'
+SRCS_H_INTERNAL != find $(SRC_DIR) -iname '*.h'
+SRCS_TEST != find '$(TEST_DIR)' -iname '*.c'
+SRCS_THIRDPARTY != find '$(THIRDPARTY_DIR)/src' -iname '*.c'
+
+OBJS := $(SRCS:%=$(BUILD_DIR)/%.o) $(SRCS_THIRDPARTY:%=$(BUILD_DIR)/%.o)
+OBJS_TEST := $(SRCS_TEST:%=$(BUILD_DIR)/%.o)
+DEPS := $(SRCS:%=$(BUILD_DIR)/%.d) $(SRCS_TEST:%=$(BUILD_DIR)/%.d) $(SRCS_THIRDPARTY:%=$(BUILD_DIR)/%.d)
+
+BINS_TEST := $(OBJS_TEST:%.c.o=%)
+TARGETS_TEST := $(BINS_TEST:%=test-%)
+TARGETS_MEM_TEST := $(BINS_TEST:%=test-mem-%)
+
+_CFLAGS := $(addprefix -I,$(INC_DIRS)) $(CFLAGS) -Wall -Wextra
+
+.PHONY: all
+all: lib
+
+
+# =====COMPILATION=====
+# Utility used by the CI to lint
+.PHONY: objs
+objs: $(OBJS)
+
+.PHONY: lib
+lib: $(LIB)
+$(LIB): $(OBJS)
+	ar -rcs $@ $(OBJS)
+
+$(BUILD_DIR)/$(SRC_DIR)/%.c.o: $(SRC_DIR)/%.c
+	mkdir -p $(dir $@)
+	$(CC) -c $(_CFLAGS) $< -o $@
+
+$(BUILD_DIR)/$(THIRDPARTY_DIR)/%.c.o: $(THIRDPARTY_DIR)/%.c
+	mkdir -p $(dir $@)
+	$(CC) $(_CFLAGS) -c $< -o $@
+
+# =====TESTING=====
+.PHONY: test
+test: $(TARGETS_TEST)
+
+.PHONY: test-mem
+test-mem: $(TARGETS_MEM_TEST)
+
+.PHONY: $(TARGETS_TEST)
+$(TARGETS_TEST): test-%: %
+	./$^
+
+.PHONY: $(TARGETS_MEM_TEST)
+$(TARGETS_MEM_TEST): test-mem-%: %
+	valgrind --tool=memcheck --error-exitcode=1 --track-origins=yes --leak-check=full ./$^
+
+.PHONY: build-test
+build-test: $(BINS_TEST)
+
+$(BINS_TEST): %: %.c.o $(LIB)
+	$(CC) \
+		$^ -o $@
+
+# Along with the include directory, each test includes $(TEST_DIR) (which
+# contains the acutest.h header file), and the src directory of the module it's
+# testing. This allows tests to access internal methods, which aren't publicly
+# exposed.
+$(BUILD_DIR)/$(TEST_DIR)/%.c.o: $(TEST_DIR)/%.c
+	mkdir -p $(dir $@)
+	$(CC) $(_CFLAGS) -I$(TEST_DIR) \
+		-I$(dir $(@:$(BUILD_DIR)/$(TEST_DIR)/%=$(SRC_DIR)/%)) \
+		-c $< -o $@
+
+# =====EXAMPLES=====
+.PHONY: build-example
+build-example: $(BINS_EXAMPLE)
+
+$(BINS_EXAMPLE): %: %.c.o $(LIB)
+	$(CC) \
+		$^ -o $@
+
+# Example binaries link the resulting library
+$(BUILD_DIR)/$(EXAMPLE_DIR)/%.c.o: $(EXAMPLE_DIR)/%.c
+	mkdir -p $(dir $@)
+	$(CC) $(_CFLAGS) -I$(PUB_INC_DIR) -c $< -o $@
+
+# =====MAINTENANCE=====
+.PHONY: lint
+lint:
+	clang-format -n --Werror $(SRCS) $(SRCS_H) $(SRCS_H_INTERNAL)
+
+.PHONY: fmt
+fmt:
+	clang-format -i $(SRCS) $(SRCS_H) $(SRCS_H_INTERNAL)
+
+.PHONY: check
+check:
+	mkdir -p $(BUILD_DIR)/cppcheck
+	cppcheck \
+		$(addprefix -I,$(INC_DIRS)) \
+		--cppcheck-build-dir=$(BUILD_DIR)/cppcheck \
+		--error-exitcode=1 \
+		--enable=warning,style \
+		--inline-suppr \
+		--check-level=exhaustive \
+		--quiet \
+		-j$(shell nproc) \
+		$(SRCS)
+
+.PHONY: clean
+clean:
+	rm -rf $(BUILD_DIR)
+
+
+.PHONY: bear
+bear: clean
+	bear -- make
+	bear --append -- make build-test
+	bear --append -- make build-example
+
+
+# Make make aware of the .d files
+-include $(DEPS)

lnm/config.mk

@@ -0,0 +1,16 @@
+LIB_FILENAME = liblnm.a
+
+BUILD_DIR = build
+SRC_DIR = src
+TEST_DIR = test
+THIRDPARTY_DIR = thirdparty
+
+PUB_INC_DIR = include
+INC_DIRS = $(PUB_INC_DIR) src/_include $(THIRDPARTY_DIR)/include
+
+# -MMD: generate a .d file for every source file. This file can be imported by
+#  make and makes make aware that a header file has been changed, ensuring an
+#  object file is also recompiled if only a header is changed.
+# -MP: generate a dummy target for every header file (according to the  docs it
+#  prevents some errors when removing header files)
+CFLAGS ?= -MMD -MP -g

lnm/include/lnm/common.h

@@ -0,0 +1,89 @@
+#ifndef LNM_COMMON
+#define LNM_COMMON
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#define LNM_RES(x)                                                             \
+  {                                                                            \
+    lnm_err res = x;                                                           \
+    if (res != lnm_err_ok)                                                     \
+      return res;                                                              \
+  }
+
+#define LNM_RES2(x, e)                                                         \
+  {                                                                            \
+    lnm_err res = x;                                                           \
+    if (res != lnm_err_ok) {                                                   \
+      e;                                                                       \
+      return res;                                                              \
+    }                                                                          \
+  }
+
+#define LNM_MIN(x, y) ((x) < (y) ? (x) : (y))
+#define LNM_MAX(x, y) ((x) > (y) ? (x) : (y))
+
+typedef enum lnm_err {
+  lnm_err_ok = 0,
+  lnm_err_failed_alloc,
+  lnm_err_failed_network,
+  lnm_err_failed_poll,
+  lnm_err_not_setup,
+  lnm_err_bad_regex,
+  lnm_err_not_found,
+} lnm_err;
+
+typedef struct lnm_loop lnm_http_loop;
+
+typedef struct lnm_loop_conn lnm_http_conn;
+
+typedef struct lnm_http_step lnm_http_step;
+
+typedef struct lnm_http_route lnm_http_route;
+
+/**
+ * Returns whether the two strings are equal.
+ *
+ * @param s1 first string to compare
+ * @param s1_len length of `s1`
+ * @param s2 second string to compare
+ * @param s2_len length of `s2`
+ */
+bool lnm_strneq(const char *s1, size_t s1_len, const char *s2, size_t s2_len);
+
+/**
+ * Returns whether the two strings are equal, ignoring capitalisation.
+ *
+ * @param s1 first string to compare
+ * @param s1_len length of `s1`
+ * @param s2 second string to compare
+ * @param s2_len length of `s2`
+ */
+bool lnm_strnieq(const char *s1, size_t s1_len, const char *s2, size_t s2_len);
+
+/**
+ * Calculate integer exponentation.
+ *
+ * @param base
+ * @param power
+ */
+uint64_t lnm_ipow(uint64_t base, uint64_t power);
+
+/**
+ * Parse the given string into a number.
+ *
+ * @param s string to parse
+ * @param len length of s
+ * @return the parsed number, or 0 if the number is invalid
+ */
+uint64_t lnm_atoi(const char *s, size_t len);
+
+/**
+ * Calculate how many base 10 digits the given number consists of.
+ *
+ * @param num number to use
+ */
+uint64_t lnm_digits(uint64_t num);
+
+#endif

lnm/include/lnm/http/consts.h

@@ -0,0 +1,97 @@
+#ifndef LNM_HTTP_CONSTS
+#define LNM_HTTP_CONSTS
+
+#include <stdlib.h>
+
+extern const char *lnm_http_method_names[];
+extern const size_t lnm_http_method_names_len;
+
+typedef enum lnm_http_method {
+  lnm_http_method_get = 0,
+  lnm_http_method_post,
+  lnm_http_method_put,
+  lnm_http_method_patch,
+  lnm_http_method_delete
+} lnm_http_method;
+
+extern const char *lnm_http_status_names[][32];
+
+typedef enum lnm_http_status {
+  // 1xx
+  lnm_http_status_continue = 100,
+  lnm_http_status_switching_protocols = 101,
+  lnm_http_status_processing = 102,
+  lnm_http_status_early_hints = 103,
+  // 2xx
+  lnm_http_status_ok = 200,
+  lnm_http_status_created = 201,
+  lnm_http_status_accepted = 202,
+  lnm_http_status_non_authoritative_information = 203,
+  lnm_http_status_no_content = 204,
+  lnm_http_status_reset_content = 205,
+  lnm_http_status_partial_content = 206,
+  lnm_http_status_multi_status = 207,
+  lnm_http_status_already_reported = 208,
+  // 3xx
+  lnm_http_status_multiple_choices = 300,
+  lnm_http_status_moved_permanently = 301,
+  lnm_http_status_found = 302,
+  lnm_http_status_see_other = 303,
+  lnm_http_status_not_modified = 304,
+  lnm_http_status_temporary_redirect = 307,
+  lnm_http_status_permanent_redirect = 308,
+  // 4xx
+  lnm_http_status_bad_request = 400,
+  lnm_http_status_unauthorized = 401,
+  lnm_http_status_payment_required = 402,
+  lnm_http_status_forbidden = 403,
+  lnm_http_status_not_found = 404,
+  lnm_http_status_method_not_allowed = 405,
+  lnm_http_status_not_acceptable = 406,
+  lnm_http_status_proxy_authentication_required = 407,
+  lnm_http_status_request_timeout = 408,
+  lnm_http_status_conflict = 409,
+  lnm_http_status_gone = 410,
+  lnm_http_status_length_required = 411,
+  lnm_http_status_precondition_failed = 412,
+  lnm_http_status_content_too_large = 413,
+  lnm_http_status_uri_too_long = 414,
+  lnm_http_status_unsupported_media_type = 415,
+  lnm_http_status_range_not_satisfiable = 416,
+  lnm_http_status_expection_failed = 417,
+  lnm_http_status_im_a_teapot = 418,
+  lnm_http_status_misdirected_request = 421,
+  lnm_http_status_unprocessable_content = 422,
+  lnm_http_status_locked = 423,
+  lnm_http_status_failed_dependency = 424,
+  lnm_http_status_too_early = 425,
+  lnm_http_status_upgrade_required = 426,
+  lnm_http_status_precondition_required = 428,
+  lnm_http_status_too_many_requests = 429,
+  lnm_http_status_request_header_fields_too_large = 431,
+  // 5xx
+  lnm_http_status_internal_server_error = 500,
+  lnm_http_status_method_not_implemented = 501,
+  lnm_http_status_bad_gateway = 502,
+  lnm_http_status_service_unavailable = 503,
+  lnm_http_status_gateway_timeout = 504,
+  lnm_http_status_http_status_version_not_supported = 505,
+  lnm_http_status_variant_also_negotiates = 506,
+  lnm_http_status_insufficient_storage = 507,
+  lnm_http_status_loop_detected = 508,
+  lnm_http_status_not_extended = 510,
+  lnm_http_status_network_authentication_required = 511
+} lnm_http_status;
+
+extern const char *lnm_http_header_names[];
+
+typedef enum lnm_http_header {
+  lnm_http_header_connection = 0,
+  lnm_http_header_location,
+  lnm_http_header_content_type,
+  lnm_http_header_content_disposition,
+  lnm_http_header_server,
+  lnm_http_header_content_length
+} lnm_http_header;
+
+#endif

lnm/include/lnm/http/loop.h

@@ -0,0 +1,138 @@
+#ifndef LNM_HTTP_LOOP
+#define LNM_HTTP_LOOP
+
+#include <stdlib.h>
+
+#include "lnm/common.h"
+#include "lnm/http/req.h"
+#include "lnm/http/res.h"
+
+typedef enum lnm_http_step_err {
+  lnm_http_step_err_done = 0,
+  lnm_http_step_err_io_needed,
+  lnm_http_step_err_close,
+  lnm_http_step_err_res,
+} lnm_http_step_err;
+
+typedef lnm_http_step_err (*lnm_http_step_fn)(lnm_http_conn *conn);
+
+typedef lnm_err (*lnm_http_ctx_init_fn)(void **c_ctx, void *gctx);
+
+typedef void (*lnm_http_ctx_reset_fn)(void *c_ctx);
+
+typedef void (*lnm_http_ctx_free_fn)(void *c_ctx);
+
+/**
+ * Initialize a new `lnm_http_loop`.
+ *
+ * @param out where to store pointer to new `lnm_http_loop`
+ */
+lnm_err lnm_http_loop_init(lnm_http_loop **out, void *c_gctx,
+                           lnm_http_ctx_init_fn ctx_init,
+                           lnm_http_ctx_reset_fn ctx_reset,
+                           lnm_http_ctx_free_fn ctx_free);
+
+/**
+ * Initialize a new step.
+ *
+ * @param out where to store pointer to new `lnm_http_step`
+ * @param fn step function
+ */
+lnm_err lnm_http_step_init(lnm_http_step **out, lnm_http_step_fn fn);
+
+/**
+ * Append the given step fn to the step.
+ *
+ * @param out where to store pointer to new `lnm_http_step`
+ * @param step step to append new step to
+ * @param fn step function
+ */
+lnm_err lnm_http_step_append(lnm_http_step **out, lnm_http_step *step,
+                             lnm_http_step_fn fn);
+
+/**
+ * Initialize a new route of type literal.
+ *
+ * @param out where to store pointer to new `lnm_http_route`
+ * @param path literal path to match
+ * @param step step to process request with
+ */
+lnm_err lnm_http_route_init_literal(lnm_http_route **out,
+                                    lnm_http_method method, const char *path,
+                                    lnm_http_step *step);
+
+/**
+ * Initialize a new route of type regex.
+ *
+ * @param out where to store pointer to new `lnm_http_route`
+ * @param pattern regex pattern
+ * @param regex_group_count how many regex groups are contained in the pattern
+ * @param step step to process request with
+ */
+lnm_err lnm_http_route_init_regex(lnm_http_route **out, lnm_http_method method,
+                                  const char *pattern, int regex_group_count,
+                                  lnm_http_step *step);
+
+/**
+ * Add a new route to the HTTP route.
+ *
+ * @param hl HTTP loop to modify
+ * @param route route to add
+ */
+lnm_err lnm_http_loop_route_add(lnm_http_loop *hl, lnm_http_route *route);
+
+lnm_err lnm_http_loop_run(lnm_http_loop *hl, uint16_t port);
+
+void lnm_http_loop_set_api_key(lnm_http_loop *hl, const char *api_key);
+
+/**
+ * Represents what state an HTTP loop request is currently in.
+ */
+typedef enum lnm_http_loop_state {
+  // Parse the HTTP request
+  lnm_http_loop_state_parse_req = 0,
+  // Route the request
+  lnm_http_loop_state_route,
+  // Parse specific headers (e.g. Content-Length)
+  lnm_http_loop_state_parse_headers,
+  // Execute the various steps defined for the route
+  lnm_http_loop_state_steps,
+  // Add certain automatically added headers
+  lnm_http_loop_state_add_headers,
+  // Write the response status line
+  lnm_http_loop_state_write_status_line,
+  // Write the various response headers
+  lnm_http_loop_state_write_headers,
+  // Write the request body
+  lnm_http_loop_state_write_body,
+  // Clean up the request and reset the state for a next request
+  lnm_http_loop_state_finish,
+} lnm_http_loop_state;
+
+typedef struct lnm_http_loop_gctx {
+  struct {
+    lnm_http_route **arr;
+    size_t len;
+  } routes;
+  lnm_http_ctx_init_fn ctx_init;
+  lnm_http_ctx_reset_fn ctx_reset;
+  lnm_http_ctx_free_fn ctx_free;
+  const char *api_key;
+  void *c;
+} lnm_http_loop_gctx;
+
+typedef struct lnm_http_loop_ctx {
+  lnm_http_loop_state state;
+  lnm_http_req req;
+  lnm_http_res res;
+  lnm_http_route *route;
+  lnm_http_step *cur_step;
+  lnm_http_loop_gctx *g;
+  void *c;
+} lnm_http_loop_ctx;
+
+lnm_http_step_err lnm_http_loop_step_body_to_buf(lnm_http_conn *conn);
+
+lnm_http_step_err lnm_http_loop_step_auth(lnm_http_conn *conn);
+
+#endif

lnm/include/lnm/http/req.h

@@ -0,0 +1,90 @@
+#ifndef LNM_HTTP_REQ
+#define LNM_HTTP_REQ
+
+#include <regex.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "picohttpparser.h"
+
+#include "lnm/common.h"
+#include "lnm/http/consts.h"
+
+#define LNM_HTTP_MAX_REQ_HEADERS 32
+#define LNM_HTTP_MAX_REGEX_GROUPS 4
+
+/**
+ * Represents the parsed HTTP request
+ */
+typedef struct lnm_http_req {
+  size_t len;
+  int minor_version;
+  lnm_http_method method;
+  struct {
+    const char *s;
+    size_t len;
+    regmatch_t groups[LNM_HTTP_MAX_REGEX_GROUPS];
+  } path;
+  struct {
+    const char *s;
+    size_t len;
+  } query;
+  struct {
+    struct phr_header arr[LNM_HTTP_MAX_REQ_HEADERS];
+    size_t len;
+  } headers;
+  struct {
+    uint64_t expected_len;
+    uint64_t len;
+    char *buf;
+    bool owned;
+  } body;
+} lnm_http_req;
+
+typedef enum lnm_http_parse_err {
+  lnm_http_parse_err_ok = 0,
+  lnm_http_parse_err_incomplete,
+  lnm_http_parse_err_invalid,
+  lnm_http_parse_err_unknown_method,
+} lnm_http_parse_err;
+
+/**
+ * Try to parse the given buffer into an HTTP request.
+ *
+ * @param req request to store parsed data in
+ * @param buf buffer to parse; might be modified
+ * @param len length of buf
+ */
+lnm_http_parse_err lnm_http_req_parse(lnm_http_req *req, char *buf, size_t len);
+
+/**
+ * Reset the given request object, free'ing all its relevant parts and allowing
+ * it to be reused as a new object.
+ *
+ * @param req object to reset
+ */
+void lnm_http_req_reset(lnm_http_req *req);
+
+/**
+ * Retrieve a specific header from the request.
+ *
+ * @param out where to write pointer to header value
+ * @param out_len where to store length of out value
+ * @param req request to look for header in
+ * @param type type of header to look for
+ */
+lnm_err lnm_http_req_header_get(const char **out, size_t *out_len,
+                                lnm_http_req *req, lnm_http_header type);
+
+/**
+ * Retrieve a specific header from the request by specifying its name.
+ *
+ * @param out where to write pointer to header value
+ * @param out_len where to store length of out value
+ * @param req request to look for header in
+ * @param name name of the header; matches case-insensitive
+ */
+lnm_err lnm_http_req_header_get_s(const char **out, size_t *out_len,
+                                  lnm_http_req *req, const char *name);
+
+#endif

lnm/include/lnm/http/res.h

@@ -0,0 +1,119 @@
+#ifndef LNM_HTTP_RES
+#define LNM_HTTP_RES
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "lnm/common.h"
+#include "lnm/http/consts.h"
+
+typedef lnm_err (*data_fn)(uint64_t *written, char *buf, lnm_http_conn *conn,
+                           uint64_t offset, uint64_t len);
+
+/**
+ * Linked list elements used to store the response headers
+ */
+typedef struct lnm_http_res_header {
+  struct {
+    char *s;
+    size_t len;
+    bool owned;
+  } name;
+  struct {
+    char *s;
+    size_t len;
+    bool owned;
+  } value;
+  struct lnm_http_res_header *next;
+} lnm_http_res_header;
+
+typedef enum lnm_http_res_body_type {
+  lnm_http_res_body_type_file = 0,
+  lnm_http_res_body_type_buf,
+  lnm_http_res_body_type_fn,
+} lnm_http_res_body_type;
+
+typedef struct lnm_http_res {
+  lnm_http_status status;
+  struct {
+    lnm_http_res_header *head;
+    lnm_http_res_header *current;
+  } headers;
+  struct {
+    struct {
+      char *buf;
+      FILE *f;
+      data_fn fn;
+    } data;
+    uint64_t len;
+    bool owned;
+    lnm_http_res_body_type type;
+  } body;
+  // General-purpose; meaning depends on the current state
+  uint64_t written;
+} lnm_http_res;
+
+/**
+ * Add a new header of a known type to the response
+ *
+ * @param type type of header
+ * @param value null-terminated string containing the value of the header
+ * @param value_owned whether to take ownership of the value pointer; if false,
+ * free'ing the buffer is the caller's responsibility
+ */
+lnm_err lnm_http_res_add_header(lnm_http_res *res, lnm_http_header type,
+                                char *value, bool value_owned);
+
+/**
+ * Add a new header of a known type to the response with a given value length.
+ *
+ * @param type type of header
+ * @param value string of length `value_len` containing the value of the header
+ * @param value_len length of value
+ * @param value_owned whether to take ownership of the value pointer; if false,
+ * free'ing the buffer is the caller's responsibility
+ */
+lnm_err lnm_http_res_add_header_len(lnm_http_res *res, lnm_http_header type,
+                                    char *value, size_t value_len,
+                                    bool value_owned);
+
+/**
+ * Set the request body to the given file pointer.
+ *
+ * @param res response to modify
+ * @param f file pointer to use as data
+ * @param len expected length of the file
+ * @param owned whether to take ownership of the file pointer
+ */
+void lnm_http_res_body_set_file(lnm_http_res *res, FILE *f, size_t len,
+                                bool owned);
+
+/**
+ * Set the request body to the given buffer.
+ *
+ * @param res response to modify
+ * @param buf buffer to use as data
+ * @param len length of the buffer
+ * @param owned whether to take ownership of the file pointer
+ */
+void lnm_http_res_body_set_buf(lnm_http_res *res, char *buf, size_t len,
+                               bool owned);
+
+/**
+ * Set the request body to be read from the given data function.
+ *
+ * @param res response to modify
+ * @param fn data reader function
+ * @param len expected length of the response
+ */
+void lnm_http_res_body_set_fn(lnm_http_res *res, data_fn fn, size_t len);
+
+/**
+ * Reset the given response object, properly free'ing any allocated buffers,
+ * allowing it to be reused for later connections.
+ *
+ * @param res res to reset
+ */
+void lnm_http_res_reset(lnm_http_res *res);
+
+#endif

lnm/include/lnm/loop.h

@@ -0,0 +1,57 @@
+#ifndef LNM_LOOP
+#define LNM_LOOP
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "lnm/common.h"
+
+#define LNM_LOOP_BUF_SIZE 4096
+#define LNM_LOOP_INITIAL_CONNS 16
+
+typedef enum {
+  lnm_loop_state_req = 0,
+  lnm_loop_state_res,
+  lnm_loop_state_end,
+} lnm_loop_state;
+
+typedef struct lnm_loop_conn {
+  int fd;
+  lnm_loop_state state;
+  void *ctx;
+  struct {
+    char buf[LNM_LOOP_BUF_SIZE];
+    size_t size;
+    size_t read;
+  } r;
+  struct {
+    char buf[LNM_LOOP_BUF_SIZE];
+    size_t size;
+  } w;
+} lnm_loop_conn;
+
+typedef struct lnm_loop {
+  int listen_fd;
+  struct {
+    lnm_loop_conn **arr;
+    size_t len;
+    size_t open;
+  } conns;
+  void *gctx;
+  lnm_err (*ctx_init)(void **out, void *gctx);
+  void (*ctx_free)(void *ctx);
+  void (*data_read)(lnm_loop_conn *conn);
+  void (*data_write)(lnm_loop_conn *conn);
+} lnm_loop;
+
+lnm_err lnm_loop_init(lnm_loop **out, void *gctx,
+                      lnm_err (*ctx_init)(void **out, void *gctx),
+                      void (*ctx_free)(void *ctx),
+                      void (*data_read)(lnm_loop_conn *conn),
+                      void (*data_write)(lnm_loop_conn *conn));
+
+lnm_err lnm_loop_setup(lnm_loop *l, uint16_t port);
+
+lnm_err lnm_loop_run(lnm_loop *l);
+
+#endif

lnm/src/_include/lnm/http/loop_internal.h

@@ -0,0 +1,69 @@
+#ifndef LNM_HTTP_LOOP_INTERNAL
+#define LNM_HTTP_LOOP_INTERNAL
+
+#include <regex.h>
+
+#include "lnm/http/loop.h"
+
+typedef struct lnm_http_step {
+  lnm_http_step_fn fn;
+  struct lnm_http_step *next;
+} lnm_http_step;
+
+typedef enum lnm_http_route_type {
+  lnm_http_route_type_literal = 0,
+  lnm_http_route_type_regex,
+} lnm_http_route_type;
+
+typedef struct lnm_http_route {
+  union {
+    regex_t *regex;
+    const char *s;
+  } route;
+  lnm_http_method method;
+  lnm_http_route_type type;
+  int regex_group_count;
+  lnm_http_step *step;
+} lnm_http_route;
+
+/**
+ * Initialize a new empty route.
+ *
+ * @param out where to store pointer to new `lnm_http_route`
+ */
+lnm_err lnm_http_route_init(lnm_http_route **out);
+
+/**
+ * Initialize a first step.
+ *
+ * @param out where to store pointer to new `lnm_http_step`
+ * @param fn step function associated with the step
+ */
+lnm_err lnm_http_step_init(lnm_http_step **out, lnm_http_step_fn fn);
+
+/**
+ * Initialize a new global context object.
+ *
+ * @param out where to store pointer to new `lnm_http_loop_gctx`
+ */
+lnm_err lnm_http_loop_gctx_init(lnm_http_loop_gctx **out, void *c_gctx,
+                                lnm_http_ctx_init_fn ctx_init,
+                                lnm_http_ctx_reset_fn ctx_reset,
+                                lnm_http_ctx_free_fn ctx_free);
+
+/**
+ * Initialize a new context.
+ *
+ * @param out where to store pointer to new object
+ * @param gctx global context for the loop
+ */
+lnm_err lnm_http_loop_ctx_init(lnm_http_loop_ctx **out,
+                               lnm_http_loop_gctx *gctx);
+
+void lnm_http_loop_ctx_reset(lnm_http_loop_ctx *ctx);
+
+void lnm_http_loop_ctx_free(lnm_http_loop_ctx *ctx);
+
+void lnm_http_loop_process(lnm_http_conn *conn);
+
+#endif

lnm/src/_include/lnm/loop_internal.h

@@ -0,0 +1,14 @@
+#ifndef LNM_LOOP_INTERNAL
+#define LNM_LOOP_INTERNAL
+
+#include "lnm/loop.h"
+
+lnm_err lnm_loop_conn_init(lnm_loop_conn **out, lnm_loop *l);
+
+void lnm_loop_conn_free(lnm_loop *l, lnm_loop_conn *conn);
+
+lnm_err lnm_loop_accept(lnm_loop *l);
+
+void lnm_loop_conn_io(lnm_loop *l, lnm_loop_conn *conn);
+
+#endif

lnm/src/http/lnm_http_consts.c

@@ -1,15 +1,12 @@
-#include <stdlib.h>
+#include "lnm/http/consts.h"
 
-#include "http/types.h"
+const char *lnm_http_method_names[] = {"GET", "POST", "PUT", "PATCH", "DELETE"};
-
+const size_t lnm_http_method_names_len =
-// Very important that this is in the same order as http_request_method
+    sizeof(lnm_http_method_names) / sizeof(lnm_http_method_names[0]);
-const char *http_method_names[] = {"GET", "POST", "PUT", "PATCH", "DELETE"};
-const size_t http_method_names_len =
-    sizeof(http_method_names) / sizeof(http_method_names[0]);
 
 // clang-format off
 
-const char *http_status_names[][32] = {
+const char *lnm_http_status_names[][32] = {
   // 1xx
   {
     "Continue", // 100
@@ -93,39 +90,11 @@ const char *http_status_names[][32] = {
   },
 };
 
-const char *http_header_names[] = {
+const char *lnm_http_header_names[] = {
   "Connection",
   "Location",
   "Content-Type",
-  "Content-Disposition"
+  "Content-Disposition",
+  "Server",
+  "Content-Length"
 };
-
-const char *http_mime_type_names[][2] = {
-  { "aac", "audio/aac" },
-  { "bz", "application/x-bzip" },
-  { "bz2", "application/x-bzip2" },
-  { "css", "text/css" },
-  { "csv", "text/csv" },
-  { "gz", "application/gzip" },
-  { "gif", "image/gif" },
-  { "htm", "text/html" },
-  { "html", "text/html" },
-  { "jar", "application/java-archive" },
-  { "jpeg", "image/jpeg" },
-  { "jpg", "image/jpeg" },
-  { "js", "text/javascript" },
-  { "json", "application/json" },
-  { "mp3", "audio/mpeg" },
-  { "mp4", "video/mp4" },
-  { "png", "image/png" },
-  { "pdf", "application/pdf" },
-  { "rar", "application/vnd.rar" },
-  { "sh", "application/x-sh" },
-  { "svg", "image/svg+xml" },
-  { "tar", "application/x-tar" },
-  { "txt", "text/plain" },
-  { "wav", "audio/wav" },
-  { "7z", "application/x-7z-compressed" },
-};
-
-// clang-format on

lnm/src/http/lnm_http_loop.c

@@ -0,0 +1,133 @@
+#include <stdlib.h>
+
+#include "lnm/common.h"
+#include "lnm/http/loop.h"
+#include "lnm/http/loop_internal.h"
+#include "lnm/loop_internal.h"
+
+lnm_err lnm_http_loop_init(lnm_http_loop **out, void *c_gctx,
+                           lnm_http_ctx_init_fn ctx_init,
+                           lnm_http_ctx_reset_fn ctx_reset,
+                           lnm_http_ctx_free_fn ctx_free) {
+  lnm_http_loop *hl = calloc(1, sizeof(lnm_http_loop));
+
+  if (hl == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  LNM_RES2(lnm_http_loop_gctx_init((lnm_http_loop_gctx **)&hl->gctx, c_gctx,
+                                   ctx_init, ctx_reset, ctx_free),
+           free(hl));
+
+  hl->data_read = lnm_http_loop_process;
+  hl->data_write = lnm_http_loop_process;
+  hl->ctx_init = (lnm_err(*)(void **, void *))lnm_http_loop_ctx_init;
+  hl->ctx_free = (void (*)(void *))lnm_http_loop_ctx_free;
+  *out = hl;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_step_init(lnm_http_step **out, lnm_http_step_fn fn) {
+  lnm_http_step *step = calloc(1, sizeof(lnm_http_step));
+
+  if (step == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  step->fn = fn;
+  *out = step;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_step_append(lnm_http_step **out, lnm_http_step *step,
+                             lnm_http_step_fn fn) {
+  LNM_RES(lnm_http_step_init(out, fn));
+
+  if (step != NULL) {
+    step->next = *out;
+  }
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_route_init(lnm_http_route **out) {
+  lnm_http_route *route = calloc(1, sizeof(lnm_http_route));
+
+  if (route == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  *out = route;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_route_init_literal(lnm_http_route **out,
+                                    lnm_http_method method, const char *path,
+                                    lnm_http_step *step) {
+  LNM_RES(lnm_http_route_init(out));
+
+  (*out)->type = lnm_http_route_type_literal;
+  (*out)->method = method;
+  (*out)->route.s = path;
+  (*out)->step = step;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_route_init_regex(lnm_http_route **out, lnm_http_method method,
+                                  const char *pattern, int regex_group_count,
+                                  lnm_http_step *step) {
+  regex_t *regex = calloc(1, sizeof(regex_t));
+
+  if (regex == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  if (regcomp(regex, pattern, REG_EXTENDED) != 0) {
+    free(regex);
+    return lnm_err_bad_regex;
+  }
+
+  LNM_RES2(lnm_http_route_init(out), free(regex));
+
+  (*out)->method = method;
+  (*out)->type = lnm_http_route_type_regex;
+  (*out)->route.regex = regex;
+  (*out)->regex_group_count = regex_group_count;
+  (*out)->step = step;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_loop_route_add(lnm_http_loop *hl, lnm_http_route *route) {
+  lnm_http_loop_gctx *gctx = hl->gctx;
+
+  lnm_http_route **new_routes =
+      gctx->routes.len > 0
+          ? realloc(gctx->routes.arr,
+                    (gctx->routes.len + 1) * sizeof(lnm_http_route *))
+          : malloc(sizeof(lnm_http_route *));
+
+  if (new_routes == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  new_routes[gctx->routes.len] = route;
+  gctx->routes.arr = new_routes;
+  gctx->routes.len++;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_loop_run(lnm_http_loop *hl, uint16_t port) {
+  LNM_RES(lnm_loop_setup(hl, port));
+  return lnm_loop_run(hl);
+}
+
+void lnm_http_loop_set_api_key(lnm_http_loop *hl, const char *api_key) {
+  lnm_http_loop_gctx *gctx = hl->gctx;
+  gctx->api_key = api_key;
+}

lnm/src/http/lnm_http_loop_ctx.c

@@ -0,0 +1,55 @@
+#include "lnm/http/loop_internal.h"
+
+lnm_err lnm_http_loop_gctx_init(lnm_http_loop_gctx **out, void *c_gctx,
+                                lnm_http_ctx_init_fn ctx_init,
+                                lnm_http_ctx_reset_fn ctx_reset,
+                                lnm_http_ctx_free_fn ctx_free) {
+  lnm_http_loop_gctx *gctx = calloc(1, sizeof(lnm_http_loop_gctx));
+
+  if (gctx == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  gctx->c = c_gctx;
+  gctx->ctx_init = ctx_init;
+  gctx->ctx_reset = ctx_reset;
+  gctx->ctx_free = ctx_free;
+
+  *out = gctx;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_loop_ctx_init(lnm_http_loop_ctx **out,
+                               lnm_http_loop_gctx *gctx) {
+  lnm_http_loop_ctx *ctx = calloc(1, sizeof(lnm_http_loop_ctx));
+
+  if (ctx == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  LNM_RES2(gctx->ctx_init(&ctx->c, gctx), free(ctx));
+
+  ctx->g = gctx;
+  *out = ctx;
+
+  return lnm_err_ok;
+}
+
+void lnm_http_loop_ctx_reset(lnm_http_loop_ctx *ctx) {
+  ctx->g->ctx_reset(ctx->c);
+
+  lnm_http_req_reset(&ctx->req);
+  lnm_http_res_reset(&ctx->res);
+
+  ctx->route = NULL;
+  ctx->cur_step = NULL;
+}
+
+void lnm_http_loop_ctx_free(lnm_http_loop_ctx *ctx) {
+  lnm_http_loop_ctx_reset(ctx);
+
+  ctx->g->ctx_free(ctx->c);
+
+  free(ctx);
+}

lnm/src/http/lnm_http_loop_process.c

@@ -0,0 +1,341 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "lnm/http/consts.h"
+#include "lnm/http/loop.h"
+#include "lnm/http/loop_internal.h"
+#include "lnm/http/req.h"
+#include "lnm/loop.h"
+#include "lnm/loop_internal.h"
+
+/* static const lnm_http_loop_state lnm_http_loop_state_first_req =
+ * lnm_http_loop_state_parse_req; */
+static const lnm_http_loop_state lnm_http_loop_state_first_res =
+    lnm_http_loop_state_add_headers;
+
+void lnm_http_loop_process_parse_req(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+
+  lnm_http_parse_err res = lnm_http_req_parse(
+      &ctx->req, &conn->r.buf[conn->r.read], conn->r.size - conn->r.read);
+
+  switch (res) {
+  case lnm_http_parse_err_ok:
+    conn->r.read += ctx->req.len;
+    ctx->state = lnm_http_loop_state_route;
+    break;
+  case lnm_http_parse_err_incomplete:
+    // If the request is already the size of the read buffer, we close the
+    // request. Otherwise, we wait for anything read
+    if (conn->r.size - conn->r.read == LNM_LOOP_BUF_SIZE) {
+      conn->state = lnm_loop_state_end;
+    }
+    break;
+  case lnm_http_parse_err_invalid:
+    conn->state = lnm_loop_state_end;
+    break;
+  case lnm_http_parse_err_unknown_method:
+    ctx->res.status = lnm_http_status_method_not_implemented;
+    ctx->state = lnm_http_loop_state_first_res;
+    break;
+  }
+}
+
+void lnm_http_loop_process_route(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_gctx *gctx = ctx->g;
+
+  // 0: no match
+  // 1: matched route, but not method
+  // 2: fully matched route
+  int match_level = 0;
+  lnm_http_route *route;
+
+  for (size_t i = 0; i < gctx->routes.len && match_level < 3; i++) {
+    route = gctx->routes.arr[i];
+    bool matched_path = false;
+
+    switch (route->type) {
+    case lnm_http_route_type_literal:
+      matched_path =
+          strncmp(route->route.s, ctx->req.path.s, ctx->req.path.len) == 0;
+      break;
+    case lnm_http_route_type_regex:
+      matched_path =
+          regexec(route->route.regex, ctx->req.path.s,
+                  LNM_HTTP_MAX_REGEX_GROUPS, ctx->req.path.groups, 0) == 0;
+      break;
+    }
+
+    // Remember the previous match levels
+    int new_match_level = 2 * matched_path + (route->method == ctx->req.method);
+    match_level = match_level < new_match_level ? new_match_level : match_level;
+  }
+
+  switch (match_level) {
+  case 0:
+  case 1:
+    ctx->res.status = lnm_http_status_not_found;
+    ctx->state = lnm_http_loop_state_first_res;
+    break;
+  case 2:
+    ctx->res.status = lnm_http_status_method_not_allowed;
+    ctx->state = lnm_http_loop_state_first_res;
+    break;
+  case 3:
+    ctx->route = route;
+    ctx->cur_step = route->step;
+    ctx->state = lnm_http_loop_state_parse_headers;
+    break;
+  }
+}
+
+void lnm_http_loop_process_parse_headers(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+  lnm_http_req *req = &ctx->req;
+
+  const char *value;
+  size_t value_len;
+  if (lnm_http_req_header_get(&value, &value_len, req,
+                              lnm_http_header_content_length) == lnm_err_ok) {
+    req->body.expected_len = lnm_atoi(value, value_len);
+  }
+
+  ctx->state = lnm_http_loop_state_steps;
+}
+
+void lnm_http_loop_process_steps(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+  lnm_http_step *step = NULL;
+
+  // Loop until we either:
+  // - reach the end of the chain of steps, indicated by NULL
+  // - have a step that's waiting for I/O
+  while ((ctx->cur_step != NULL) && (step != ctx->cur_step)) {
+    step = ctx->cur_step;
+
+    switch (step->fn(conn)) {
+    case lnm_http_step_err_done:
+      ctx->cur_step = ctx->cur_step->next;
+      break;
+    case lnm_http_step_err_io_needed:
+      break;
+    case lnm_http_step_err_close:
+      conn->state = lnm_loop_state_end;
+      break;
+    case lnm_http_step_err_res:
+      ctx->state = lnm_http_loop_state_first_res;
+      break;
+    }
+  }
+
+  if (ctx->cur_step == NULL) {
+    ctx->state = lnm_http_loop_state_add_headers;
+  }
+}
+
+void lnm_http_loop_state_process_add_headers(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+  lnm_http_res *res = &ctx->res;
+
+  uint64_t digits = lnm_digits(res->body.len);
+  char *buf = malloc(digits + 1);
+
+  if (buf == NULL) {
+    conn->state = lnm_loop_state_end;
+
+    return;
+  }
+
+  sprintf(buf, "%lu", res->body.len);
+  lnm_http_res_add_header_len(res, lnm_http_header_content_length, buf, digits,
+                              true);
+
+  ctx->state = lnm_http_loop_state_write_status_line;
+}
+
+// This function is intentionally written inefficiently for now, as it will most
+// likely only have to run once for each response
+void lnm_http_loop_process_write_status_line(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+  lnm_http_res *res = &ctx->res;
+
+  if (res->status == 0) {
+    res->status = lnm_http_status_ok;
+  }
+
+  const char *response_type_name =
+      lnm_http_status_names[res->status / 100 - 1][res->status % 100];
+
+  // First we calculate the size of the start of the header
+  size_t buf_size =
+      snprintf(NULL, 0, "HTTP/1.1 %i %s\n", res->status, response_type_name);
+  char buf[buf_size + 1];
+  sprintf(buf, "HTTP/1.1 %i %s\n", res->status, response_type_name);
+
+  size_t to_write =
+      LNM_MIN(buf_size - res->written, LNM_LOOP_BUF_SIZE - conn->w.size);
+  memcpy(&conn->w.buf[conn->w.size], &buf[res->written], to_write);
+
+  conn->w.size += to_write;
+  res->written += to_write;
+
+  if (res->written == buf_size) {
+    res->written = 0;
+    ctx->state = lnm_http_loop_state_write_headers;
+  }
+}
+
+void lnm_http_loop_process_write_headers(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+  lnm_http_res *res = &ctx->res;
+
+  lnm_http_res_header *header;
+
+  // Loop as long as we can still write new data and have headers to write
+  while ((conn->w.size < LNM_LOOP_BUF_SIZE) &&
+         ((header = res->headers.current) != NULL)) {
+    size_t buf_len = header->name.len + 2 + header->value.len + 1;
+
+    // Here, we also constantly calculate the entire buffer as we assume each
+    // header will be written in one go
+    char buf[buf_len];
+    memcpy(buf, header->name.s, header->name.len);
+    memcpy(&buf[header->name.len + 2], header->value.s, header->value.len);
+    buf[header->name.len] = ':';
+    buf[header->name.len + 1] = ' ';
+    buf[buf_len - 1] = '\n';
+
+    size_t to_write =
+        LNM_MIN(buf_len - res->written, LNM_LOOP_BUF_SIZE - conn->w.size);
+    memcpy(&conn->w.buf[conn->w.size], &buf[res->written], to_write);
+
+    conn->w.size += to_write;
+    res->written += to_write;
+
+    if (res->written == buf_len) {
+      res->written = 0;
+      res->headers.current = res->headers.current->next;
+    }
+  }
+
+  // The headers should end with an additional newline. If there's no space left
+  // in the write buffer, we don't switch states so we can re-try this write
+  // later
+  if ((res->headers.current == NULL) && (conn->w.size < LNM_LOOP_BUF_SIZE)) {
+    conn->w.buf[conn->w.size] = '\n';
+    conn->w.size++;
+
+    ctx->state = ctx->res.body.len > 0 ? lnm_http_loop_state_write_body
+                                       : lnm_http_loop_state_finish;
+  }
+}
+
+void lnm_http_loop_process_write_body(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+  lnm_http_res *res = &ctx->res;
+
+  size_t to_write =
+      LNM_MIN(res->body.len - res->written, LNM_LOOP_BUF_SIZE - conn->w.size);
+  size_t written = 0;
+
+  switch (res->body.type) {
+  case lnm_http_res_body_type_buf:
+    memcpy(&conn->w.buf[conn->w.size], &res->body.data.buf[res->written],
+           to_write);
+    written = to_write;
+    break;
+  case lnm_http_res_body_type_file:
+    written = fread(&conn->w.buf[conn->w.size], 1, to_write, res->body.data.f);
+
+    if ((written == 0) && (ferror(res->body.data.f) != 0)) {
+      ctx->state = lnm_http_loop_state_finish;
+    }
+    break;
+  case lnm_http_res_body_type_fn:
+    if (res->body.data.fn(&written, &conn->w.buf[conn->w.size], conn,
+                          res->written, to_write) != lnm_err_ok) {
+      ctx->state = lnm_http_loop_state_finish;
+    }
+    break;
+  }
+
+  conn->w.size += written;
+  res->written += written;
+
+  if (res->written == res->body.len) {
+    ctx->state = lnm_http_loop_state_finish;
+  }
+}
+
+void lnm_http_loop_process_finish(lnm_http_conn *conn) {
+  // First we ensure the write buffer is fully flushed
+  if (conn->w.size > 0) {
+    return;
+  }
+
+  lnm_http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_ctx_reset(ctx);
+
+  ctx->state = lnm_http_loop_state_parse_req;
+}
+
+void (*process_fns[])(lnm_http_conn *conn) = {
+    lnm_http_loop_process_parse_req,
+    lnm_http_loop_process_route,
+    lnm_http_loop_process_parse_headers,
+    lnm_http_loop_process_steps,
+    lnm_http_loop_state_process_add_headers,
+    lnm_http_loop_process_write_status_line,
+    lnm_http_loop_process_write_headers,
+    lnm_http_loop_process_write_body,
+    lnm_http_loop_process_finish,
+};
+
+lnm_loop_state state_map[] = {
+    // parse_req
+    lnm_loop_state_req,
+    // route
+    lnm_loop_state_req,
+    // parse_headers
+    lnm_loop_state_req,
+    // steps
+    lnm_loop_state_req,
+    // add_headers
+    lnm_loop_state_req,
+    // write_status_line
+    lnm_loop_state_res,
+    // write_headers
+    lnm_loop_state_res,
+    // write_body
+    lnm_loop_state_res,
+    // finish
+    lnm_loop_state_res,
+};
+
+void lnm_http_loop_process(lnm_http_conn *conn) {
+  const lnm_http_loop_ctx *ctx = conn->ctx;
+
+  lnm_http_loop_state http_loop_state;
+  lnm_loop_state loop_state = conn->state;
+
+  // We stop processing if:
+  // - the event loop state has been explicitely changed inside the executed
+  // step, as we need to switch to the other I/O loop
+  // - the event loop state needs to be changed because the next step should be
+  // run in another event loop state
+  // - the process fn returned without changing the HTTP loop state, indicating
+  // it's waiting for I/O
+  do {
+    http_loop_state = ctx->state;
+
+    process_fns[http_loop_state](conn);
+  } while ((conn->state == loop_state) &&
+           (conn->state == state_map[http_loop_state]) &&
+           (http_loop_state != ctx->state));
+
+  // Check required to prevent overwriting manually set event loop state
+  conn->state =
+      conn->state == loop_state ? state_map[http_loop_state] : conn->state;
+}

lnm/src/http/lnm_http_loop_steps.c

@@ -0,0 +1,44 @@
+#include <string.h>
+
+#include "lnm/http/consts.h"
+#include "lnm/http/loop.h"
+#include "lnm/loop.h"
+
+lnm_http_step_err lnm_http_loop_step_body_to_buf(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+
+  if (ctx->req.body.buf == NULL) {
+    ctx->req.body.buf = malloc(ctx->req.body.expected_len * sizeof(char));
+    ctx->req.body.len = 0;
+  }
+
+  size_t to_read = LNM_MIN(conn->r.size - conn->r.read,
+                           ctx->req.body.expected_len - ctx->req.body.len);
+  memcpy(&ctx->req.body.buf[ctx->req.body.len], &conn->r.buf[conn->r.read],
+         to_read);
+  ctx->req.body.len += to_read;
+  conn->r.read += to_read;
+
+  return ctx->req.body.len == ctx->req.body.expected_len
+             ? lnm_http_step_err_done
+             : lnm_http_step_err_io_needed;
+}
+
+lnm_http_step_err lnm_http_loop_step_auth(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+
+  // If there's no API key, requests are always authorized
+  bool authorized = ctx->g->api_key == NULL;
+
+  const char *value;
+  size_t value_len;
+
+  if (!authorized && lnm_http_req_header_get_s(&value, &value_len, &ctx->req,
+                                               "X-Api-Key") == lnm_err_ok) {
+    authorized = (value_len == strlen(ctx->g->api_key)) &&
+                 (memcmp(value, ctx->g->api_key, value_len) == 0);
+  }
+
+  ctx->res.status = authorized ? ctx->res.status : lnm_http_status_unauthorized;
+  return authorized ? lnm_http_step_err_done : lnm_http_step_err_res;
+}

lnm/src/http/lnm_http_req.c

@@ -0,0 +1,96 @@
+#include <stdbool.h>
+#include <string.h>
+
+#include "lnm/common.h"
+#include "lnm/http/consts.h"
+#include "lnm/http/loop.h"
+#include "lnm/http/req.h"
+
+lnm_http_parse_err lnm_http_req_parse(lnm_http_req *req, char *buf,
+                                      size_t len) {
+  const char *method;
+  char *path;
+  size_t method_len, path_len;
+
+  req->headers.len = LNM_HTTP_MAX_REQ_HEADERS;
+
+  int req_len = phr_parse_request(
+      buf, len, &method, &method_len, (const char **)&path, &path_len,
+      &req->minor_version, req->headers.arr, &req->headers.len, req->len);
+
+  if (req_len == -1) {
+    req->len = len;
+
+    return lnm_http_parse_err_invalid;
+  } else if (req_len == -2) {
+    return lnm_http_parse_err_incomplete;
+  }
+
+  bool known_method = false;
+
+  for (size_t i = 0; i < lnm_http_method_names_len && !known_method; i++) {
+    if (strncmp(method, lnm_http_method_names[i], method_len) == 0) {
+      req->method = i;
+      known_method = true;
+    }
+  }
+
+  if (!known_method) {
+    return lnm_http_parse_err_unknown_method;
+  }
+
+  // Path will always end with a newline, which we can safely set to nul
+  path[path_len] = '\0';
+  char *question_mark = strchr(path, '?');
+
+  // Only store query if the path doesn't simply end with a question mark
+  if ((question_mark != NULL) && (path_len - (question_mark + 1 - path) > 0)) {
+    req->query.s = question_mark + 1;
+    req->query.len = path_len - (question_mark + 1 - path);
+
+    path_len = question_mark - path;
+
+    // All parsed strings should be null-terminated. This character is either a
+    // newline (if at the end of the path), or a question mark (if a query is
+    // present).
+    path[path_len] = '\0';
+  }
+
+  req->path.len = path_len;
+  req->path.s = path;
+  req->len = req_len;
+
+  return lnm_http_parse_err_ok;
+}
+
+void lnm_http_req_reset(lnm_http_req *req) {
+  if (req->body.owned) {
+    free(req->body.buf);
+  }
+
+  memset(req, 0, sizeof(lnm_http_req));
+}
+
+lnm_err lnm_http_req_header_get(const char **out, size_t *out_len,
+                                lnm_http_req *req, lnm_http_header type) {
+  return lnm_http_req_header_get_s(out, out_len, req,
+                                   lnm_http_header_names[type]);
+}
+
+lnm_err lnm_http_req_header_get_s(const char **out, size_t *out_len,
+                                  lnm_http_req *req, const char *name) {
+  size_t name_len = strlen(name);
+
+  for (size_t i = 0; i < req->headers.len; i++) {
+    const struct phr_header *header = &req->headers.arr[i];
+
+    if (lnm_strnieq(header->name, header->name_len, name, name_len)) {
+      *out = header->value;
+      *out_len = header->value_len;
+
+      return lnm_err_ok;
+    }
+  }
+
+  return lnm_err_not_found;
+}

lnm/src/http/lnm_http_res.c

@@ -0,0 +1,99 @@
+#include <string.h>
+
+#include "lnm/http/res.h"
+
+lnm_err lnm_http_res_add_header(lnm_http_res *res, lnm_http_header type,
+                                char *value, bool value_owned) {
+  return lnm_http_res_add_header_len(res, type, value, strlen(value),
+                                     value_owned);
+}
+
+lnm_err lnm_http_res_add_header_len(lnm_http_res *res, lnm_http_header type,
+                                    char *value, size_t value_len,
+                                    bool value_owned) {
+  lnm_http_res_header *header = calloc(1, sizeof(lnm_http_res_header));
+
+  if (header == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  lnm_http_res_header **next_ptr = &res->headers.head;
+
+  while ((*next_ptr) != NULL) {
+    next_ptr = &(*next_ptr)->next;
+  }
+
+  *next_ptr = header;
+
+  // Initialize the current pointer to the head of the linked list
+  if (res->headers.current == NULL) {
+    res->headers.current = header;
+  }
+
+  header->name.s = (char *)lnm_http_header_names[type];
+  header->name.len = strlen(lnm_http_header_names[type]);
+  header->name.owned = false;
+
+  header->value.s = value;
+  header->value.len = value_len;
+  header->value.owned = value_owned;
+
+  return lnm_err_ok;
+}
+
+void lnm_http_res_body_set_file(lnm_http_res *res, FILE *f, size_t len,
+                                bool owned) {
+  res->body.data.f = f;
+  res->body.len = len;
+  res->body.owned = owned;
+  res->body.type = lnm_http_res_body_type_file;
+}
+
+void lnm_http_res_body_set_buf(lnm_http_res *res, char *buf, size_t len,
+                               bool owned) {
+  res->body.data.buf = buf;
+  res->body.len = len;
+  res->body.owned = owned;
+  res->body.type = lnm_http_res_body_type_buf;
+}
+
+void lnm_http_res_body_set_fn(lnm_http_res *res, data_fn fn, size_t len) {
+  res->body.data.fn = fn;
+  res->body.len = len;
+  res->body.type = lnm_http_res_body_type_fn;
+}
+
+void lnm_http_res_reset(lnm_http_res *res) {
+  lnm_http_res_header *header = res->headers.head;
+
+  while (header != NULL) {
+    lnm_http_res_header *next = header->next;
+
+    if (header->name.owned) {
+      free(header->name.s);
+    }
+
+    if (header->value.owned) {
+      free(header->value.s);
+    }
+
+    free(header);
+
+    header = next;
+  }
+
+  if (res->body.owned) {
+    switch (res->body.type) {
+    case lnm_http_res_body_type_file:
+      fclose(res->body.data.f);
+      break;
+    case lnm_http_res_body_type_buf:
+      free(res->body.data.buf);
+      break;
+    case lnm_http_res_body_type_fn:
+      break;
+    }
+  }
+
+  memset(res, 0, sizeof(lnm_http_res));
+}

lnm/src/lnm_utils.c

@@ -0,0 +1,57 @@
+#include <stdint.h>
+#include <string.h>
+
+#include "lnm/common.h"
+
+bool lnm_strneq(const char *s1, size_t s1_len, const char *s2, size_t s2_len) {
+  return (s1_len == s2_len) && (memcmp(s1, s2, s1_len) == 0);
+}
+
+bool lnm_strnieq(const char *s1, size_t s1_len, const char *s2, size_t s2_len) {
+  bool equal = s1_len == s2_len;
+
+  for (size_t i = 0; i < s1_len && equal; i++) {
+    equal = s1[i] == s2[i] ||
+            (('a' <= s1[i]) && (s1[i] <= 'z') && (s1[i] - 32 == s2[i]));
+  }
+
+  return equal;
+}
+
+uint64_t lnm_ipow(uint64_t base, uint64_t power) {
+  uint64_t res = 1;
+
+  while (power > 0) {
+    res *= base;
+    power--;
+  }
+
+  return res;
+}
+
+uint64_t lnm_atoi(const char *s, size_t len) {
+  uint64_t res = 0;
+
+  for (size_t i = 0; i < len; i++) {
+    if (s[i] < '0' || '9' < s[i]) {
+      return 0;
+    }
+
+    uint64_t val = s[i] - '0';
+    res += val * lnm_ipow(10, (len - 1) - i);
+  }
+
+  return res;
+}
+
+uint64_t lnm_digits(uint64_t num) {
+  int digits = 1;
+
+  while (num > 9) {
+    digits++;
+
+    num /= 10;
+  }
+
+  return digits;
+}

lnm/src/loop/lnm_loop.c

@@ -0,0 +1,196 @@
+#include <fcntl.h>
+#include <netinet/in.h>
+#include <poll.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "lnm/common.h"
+#include "lnm/loop_internal.h"
+
+lnm_err lnm_loop_init(lnm_loop **out, void *gctx,
+                      lnm_err (*ctx_init)(void **out, void *gctx),
+                      void (*ctx_free)(void *ctx),
+                      void (*data_read)(lnm_loop_conn *conn),
+                      void (*data_write)(lnm_loop_conn *conn)) {
+  lnm_loop *l = calloc(1, sizeof(lnm_loop));
+
+  if (l == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  l->gctx = gctx;
+  l->ctx_init = ctx_init;
+  l->ctx_free = ctx_free;
+  l->data_read = data_read;
+  l->data_write = data_write;
+
+  *out = l;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_loop_accept(lnm_loop *l) {
+  int conn_fd = accept(l->listen_fd, NULL, NULL);
+
+  if (conn_fd < 0) {
+    return lnm_err_failed_network;
+  }
+
+  // Set socket to non-blocking
+  int flags = fcntl(conn_fd, F_GETFL);
+  flags |= O_NONBLOCK;
+  fcntl(conn_fd, F_SETFL, flags);
+
+  // Append connection to list of connections
+  if ((size_t)conn_fd >= l->conns.len) {
+    // We always calloc as a realloc might introduce unitialized values in the
+    // array
+    lnm_loop_conn **new = calloc(sizeof(lnm_loop_conn *), conn_fd + 1);
+
+    if (new == NULL) {
+      close(conn_fd);
+
+      return lnm_err_failed_alloc;
+    }
+
+    if (l->conns.len > 0) {
+      memcpy(new, l->conns.arr, l->conns.len * sizeof(lnm_loop_conn *));
+      free(l->conns.arr);
+    }
+
+    l->conns.arr = new;
+    l->conns.len = conn_fd + 1;
+  }
+
+  lnm_loop_conn *conn;
+  LNM_RES2(lnm_loop_conn_init(&conn, l), close(conn_fd));
+
+  l->conns.arr[conn_fd] = conn;
+  conn->fd = conn_fd;
+  conn->state = lnm_loop_state_req;
+
+  l->conns.open++;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_loop_setup(lnm_loop *l, uint16_t port) {
+  int listen_fd = socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, 0);
+
+  if (listen_fd < 0) {
+    return lnm_err_failed_network;
+  }
+
+  int val = 1;
+  int res = setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(int));
+
+  if (res < 0) {
+    return lnm_err_failed_network;
+  }
+
+  struct sockaddr_in addr = {.sin_family = AF_INET,
+                             .sin_port = ntohs(port),
+                             .sin_addr.s_addr = ntohl(0)};
+
+  res = bind(listen_fd, (const struct sockaddr *)&addr, sizeof(addr));
+
+  if (res < 0) {
+    return lnm_err_failed_network;
+  }
+
+  res = listen(listen_fd, SOMAXCONN);
+
+  if (res < 0) {
+    return lnm_err_failed_network;
+  }
+
+  l->listen_fd = listen_fd;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_loop_run(lnm_loop *l) {
+  if (l->listen_fd == 0) {
+    return lnm_err_not_setup;
+  }
+
+  struct pollfd *poll_args =
+      malloc((LNM_LOOP_INITIAL_CONNS + 1) * sizeof(struct pollfd));
+  size_t poll_args_cap = LNM_LOOP_INITIAL_CONNS + 1;
+
+  if (poll_args == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  // First argument is listening socket
+  poll_args[0].fd = l->listen_fd;
+  poll_args[0].events = POLLIN;
+
+  while (1) {
+    size_t poll_args_len = 1;
+
+    // Add all open connections to the poll command
+    for (size_t i = 0; i < l->conns.len && poll_args_len < l->conns.open + 1;
+         i++) {
+      const lnm_loop_conn *conn = l->conns.arr[i];
+
+      if (conn == NULL) {
+        continue;
+      }
+
+      poll_args[poll_args_len].fd = conn->fd;
+      poll_args[poll_args_len].events =
+          ((conn->state == lnm_loop_state_req) ? POLLIN : POLLOUT) | POLLERR;
+
+      poll_args_len++;
+    }
+
+    int polled = poll(poll_args, poll_args_len, -1);
+
+    if (polled < 0) {
+      return lnm_err_failed_poll;
+    }
+
+    if (poll_args[0].revents) {
+      lnm_loop_accept(l);
+      polled--;
+    }
+
+    for (size_t i = 1; i < poll_args_len && polled > 0; i++) {
+      if (poll_args[i].revents) {
+        lnm_loop_conn *conn = l->conns.arr[poll_args[i].fd];
+
+        lnm_loop_conn_io(l, conn);
+
+        if (conn->state == lnm_loop_state_end) {
+          l->conns.arr[conn->fd] = NULL;
+          close(conn->fd);
+
+          l->conns.open--;
+          lnm_loop_conn_free(l, conn);
+        }
+
+        polled--;
+      }
+    }
+
+    if (poll_args_cap < l->conns.open + 1) {
+      struct pollfd *buf = malloc((l->conns.open + 1) * sizeof(struct pollfd));
+
+      if (buf == NULL) {
+        return lnm_err_failed_alloc;
+      }
+
+      buf[0].fd = l->listen_fd;
+      buf[0].events = POLLIN;
+
+      free(poll_args);
+      poll_args = buf;
+
+      poll_args_cap = l->conns.open + 1;
+    }
+  }
+
+  return lnm_err_ok;
+}

lnm/src/loop/lnm_loop_conn.c

@@ -0,0 +1,22 @@
+#include "lnm/loop_internal.h"
+
+lnm_err lnm_loop_conn_init(lnm_loop_conn **out, lnm_loop *l) {
+  lnm_loop_conn *conn = calloc(1, sizeof(lnm_loop_conn));
+
+  if (conn == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  void *ctx;
+  LNM_RES2(l->ctx_init(&ctx, l->gctx), free(conn));
+
+  conn->ctx = ctx;
+  *out = conn;
+
+  return lnm_err_ok;
+}
+
+void lnm_loop_conn_free(lnm_loop *l, lnm_loop_conn *conn) {
+  l->ctx_free(conn->ctx);
+  free(conn);
+}

lnm/src/loop/lnm_loop_io.c

@@ -0,0 +1,77 @@
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "lnm/loop.h"
+#include "lnm/loop_internal.h"
+
+void lnm_loop_conn_io_req(lnm_loop *l, lnm_loop_conn *conn) {
+  do {
+    // Move remaining data to front of buffer
+    memmove(conn->r.buf, &conn->r.buf[conn->r.read],
+            conn->r.size - conn->r.read);
+    conn->r.size -= conn->r.read;
+    conn->r.read = 0;
+
+    ssize_t res;
+    size_t cap = LNM_LOOP_BUF_SIZE - conn->r.size;
+
+    do {
+      res = read(conn->fd, &conn->r.buf[conn->r.size], cap);
+    } while (res < 0 && errno == EINTR);
+
+    // Read can't be performed without blocking; we come back later
+    if (res < 0 && errno == EAGAIN) {
+      return;
+    }
+
+    if (res <= 0) {
+      conn->state = lnm_loop_state_end;
+
+      return;
+    }
+
+    conn->r.size += res;
+    l->data_read(conn);
+  } while (conn->state == lnm_loop_state_req);
+}
+
+void lnm_loop_conn_io_res(lnm_loop *l, lnm_loop_conn *conn) {
+  do {
+    ssize_t res;
+
+    do {
+      res = write(conn->fd, conn->w.buf, conn->w.size);
+    } while (res < 0 && errno == EINTR);
+
+    // Write can't be performed without blocking; we come back later
+    if (res < 0 && errno == EAGAIN) {
+      return;
+    }
+
+    if (res <= 0) {
+      conn->state = lnm_loop_state_end;
+
+      return;
+    }
+
+    // Move remaining data to front of buffer. Doing this here gives the data
+    // writer function more space to work with
+    memmove(conn->w.buf, &conn->w.buf[res], conn->w.size - res);
+    conn->w.size -= res;
+
+    l->data_write(conn);
+  } while (conn->state == lnm_loop_state_res);
+}
+
+void lnm_loop_conn_io(lnm_loop *l, lnm_loop_conn *conn) {
+  switch (conn->state) {
+  case lnm_loop_state_req:
+    lnm_loop_conn_io_req(l, conn);
+    break;
+  case lnm_loop_state_res:
+    lnm_loop_conn_io_res(l, conn);
+    break;
+  default:;
+  }
+}

lnm/thirdparty/include/picohttpparser.h

@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2009-2014 Kazuho Oku, Tokuhiro Matsuno, Daisuke Murase,
+ *                         Shigeo Mitsunari
+ *
+ * The software is licensed under either the MIT License (below) or the Perl
+ * license.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef picohttpparser_h
+#define picohttpparser_h
+
+#include <sys/types.h>
+
+#ifdef _MSC_VER
+#define ssize_t intptr_t
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* contains name and value of a header (name == NULL if is a continuing line
+ * of a multiline header */
+struct phr_header {
+    const char *name;
+    size_t name_len;
+    const char *value;
+    size_t value_len;
+};
+
+/* returns number of bytes consumed if successful, -2 if request is partial,
+ * -1 if failed */
+int phr_parse_request(const char *buf, size_t len, const char **method, size_t *method_len, const char **path, size_t *path_len,
+                      int *minor_version, struct phr_header *headers, size_t *num_headers, size_t last_len);
+
+/* ditto */
+int phr_parse_response(const char *_buf, size_t len, int *minor_version, int *status, const char **msg, size_t *msg_len,
+                       struct phr_header *headers, size_t *num_headers, size_t last_len);
+
+/* ditto */
+int phr_parse_headers(const char *buf, size_t len, struct phr_header *headers, size_t *num_headers, size_t last_len);
+
+/* should be zero-filled before start */
+struct phr_chunked_decoder {
+    size_t bytes_left_in_chunk; /* number of bytes left in current chunk */
+    char consume_trailer;       /* if trailing headers should be consumed */
+    char _hex_count;
+    char _state;
+};
+
+/* the function rewrites the buffer given as (buf, bufsz) removing the chunked-
+ * encoding headers.  When the function returns without an error, bufsz is
+ * updated to the length of the decoded data available.  Applications should
+ * repeatedly call the function while it returns -2 (incomplete) every time
+ * supplying newly arrived data.  If the end of the chunked-encoded data is
+ * found, the function returns a non-negative number indicating the number of
+ * octets left undecoded, that starts from the offset returned by `*bufsz`.
+ * Returns -1 on error.
+ */
+ssize_t phr_decode_chunked(struct phr_chunked_decoder *decoder, char *buf, size_t *bufsz);
+
+/* returns if the chunked decoder is in middle of chunked data */
+int phr_decode_chunked_is_in_data(struct phr_chunked_decoder *decoder);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

lnm/thirdparty/src/picohttpparser.c

@@ -0,0 +1,665 @@
+/*
+ * Copyright (c) 2009-2014 Kazuho Oku, Tokuhiro Matsuno, Daisuke Murase,
+ *                         Shigeo Mitsunari
+ *
+ * The software is licensed under either the MIT License (below) or the Perl
+ * license.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <assert.h>
+#include <stddef.h>
+#include <string.h>
+#ifdef __SSE4_2__
+#ifdef _MSC_VER
+#include <nmmintrin.h>
+#else
+#include <x86intrin.h>
+#endif
+#endif
+#include "picohttpparser.h"
+
+#if __GNUC__ >= 3
+#define likely(x) __builtin_expect(!!(x), 1)
+#define unlikely(x) __builtin_expect(!!(x), 0)
+#else
+#define likely(x) (x)
+#define unlikely(x) (x)
+#endif
+
+#ifdef _MSC_VER
+#define ALIGNED(n) _declspec(align(n))
+#else
+#define ALIGNED(n) __attribute__((aligned(n)))
+#endif
+
+#define IS_PRINTABLE_ASCII(c) ((unsigned char)(c)-040u < 0137u)
+
+#define CHECK_EOF()                                                                                                                \
+    if (buf == buf_end) {                                                                                                          \
+        *ret = -2;                                                                                                                 \
+        return NULL;                                                                                                               \
+    }
+
+#define EXPECT_CHAR_NO_CHECK(ch)                                                                                                   \
+    if (*buf++ != ch) {                                                                                                            \
+        *ret = -1;                                                                                                                 \
+        return NULL;                                                                                                               \
+    }
+
+#define EXPECT_CHAR(ch)                                                                                                            \
+    CHECK_EOF();                                                                                                                   \
+    EXPECT_CHAR_NO_CHECK(ch);
+
+#define ADVANCE_TOKEN(tok, toklen)                                                                                                 \
+    do {                                                                                                                           \
+        const char *tok_start = buf;                                                                                               \
+        static const char ALIGNED(16) ranges2[16] = "\000\040\177\177";                                                            \
+        int found2;                                                                                                                \
+        buf = findchar_fast(buf, buf_end, ranges2, 4, &found2);                                                                    \
+        if (!found2) {                                                                                                             \
+            CHECK_EOF();                                                                                                           \
+        }                                                                                                                          \
+        while (1) {                                                                                                                \
+            if (*buf == ' ') {                                                                                                     \
+                break;                                                                                                             \
+            } else if (unlikely(!IS_PRINTABLE_ASCII(*buf))) {                                                                      \
+                if ((unsigned char)*buf < '\040' || *buf == '\177') {                                                              \
+                    *ret = -1;                                                                                                     \
+                    return NULL;                                                                                                   \
+                }                                                                                                                  \
+            }                                                                                                                      \
+            ++buf;                                                                                                                 \
+            CHECK_EOF();                                                                                                           \
+        }                                                                                                                          \
+        tok = tok_start;                                                                                                           \
+        toklen = buf - tok_start;                                                                                                  \
+    } while (0)
+
+static const char *token_char_map = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+                                    "\0\1\0\1\1\1\1\1\0\0\1\1\0\1\1\0\1\1\1\1\1\1\1\1\1\1\0\0\0\0\0\0"
+                                    "\0\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\0\0\0\1\1"
+                                    "\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\0\1\0\1\0"
+                                    "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+                                    "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+                                    "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+                                    "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+
+static const char *findchar_fast(const char *buf, const char *buf_end, const char *ranges, size_t ranges_size, int *found)
+{
+    *found = 0;
+#if __SSE4_2__
+    if (likely(buf_end - buf >= 16)) {
+        __m128i ranges16 = _mm_loadu_si128((const __m128i *)ranges);
+
+        size_t left = (buf_end - buf) & ~15;
+        do {
+            __m128i b16 = _mm_loadu_si128((const __m128i *)buf);
+            int r = _mm_cmpestri(ranges16, ranges_size, b16, 16, _SIDD_LEAST_SIGNIFICANT | _SIDD_CMP_RANGES | _SIDD_UBYTE_OPS);
+            if (unlikely(r != 16)) {
+                buf += r;
+                *found = 1;
+                break;
+            }
+            buf += 16;
+            left -= 16;
+        } while (likely(left != 0));
+    }
+#else
+    /* suppress unused parameter warning */
+    (void)buf_end;
+    (void)ranges;
+    (void)ranges_size;
+#endif
+    return buf;
+}
+
+static const char *get_token_to_eol(const char *buf, const char *buf_end, const char **token, size_t *token_len, int *ret)
+{
+    const char *token_start = buf;
+
+#ifdef __SSE4_2__
+    static const char ALIGNED(16) ranges1[16] = "\0\010"    /* allow HT */
+                                                "\012\037"  /* allow SP and up to but not including DEL */
+                                                "\177\177"; /* allow chars w. MSB set */
+    int found;
+    buf = findchar_fast(buf, buf_end, ranges1, 6, &found);
+    if (found)
+        goto FOUND_CTL;
+#else
+    /* find non-printable char within the next 8 bytes, this is the hottest code; manually inlined */
+    while (likely(buf_end - buf >= 8)) {
+#define DOIT()                                                                                                                     \
+    do {                                                                                                                           \
+        if (unlikely(!IS_PRINTABLE_ASCII(*buf)))                                                                                   \
+            goto NonPrintable;                                                                                                     \
+        ++buf;                                                                                                                     \
+    } while (0)
+        DOIT();
+        DOIT();
+        DOIT();
+        DOIT();
+        DOIT();
+        DOIT();
+        DOIT();
+        DOIT();
+#undef DOIT
+        continue;
+    NonPrintable:
+        if ((likely((unsigned char)*buf < '\040') && likely(*buf != '\011')) || unlikely(*buf == '\177')) {
+            goto FOUND_CTL;
+        }
+        ++buf;
+    }
+#endif
+    for (;; ++buf) {
+        CHECK_EOF();
+        if (unlikely(!IS_PRINTABLE_ASCII(*buf))) {
+            if ((likely((unsigned char)*buf < '\040') && likely(*buf != '\011')) || unlikely(*buf == '\177')) {
+                goto FOUND_CTL;
+            }
+        }
+    }
+FOUND_CTL:
+    if (likely(*buf == '\015')) {
+        ++buf;
+        EXPECT_CHAR('\012');
+        *token_len = buf - 2 - token_start;
+    } else if (*buf == '\012') {
+        *token_len = buf - token_start;
+        ++buf;
+    } else {
+        *ret = -1;
+        return NULL;
+    }
+    *token = token_start;
+
+    return buf;
+}
+
+static const char *is_complete(const char *buf, const char *buf_end, size_t last_len, int *ret)
+{
+    int ret_cnt = 0;
+    buf = last_len < 3 ? buf : buf + last_len - 3;
+
+    while (1) {
+        CHECK_EOF();
+        if (*buf == '\015') {
+            ++buf;
+            CHECK_EOF();
+            EXPECT_CHAR('\012');
+            ++ret_cnt;
+        } else if (*buf == '\012') {
+            ++buf;
+            ++ret_cnt;
+        } else {
+            ++buf;
+            ret_cnt = 0;
+        }
+        if (ret_cnt == 2) {
+            return buf;
+        }
+    }
+
+    *ret = -2;
+    return NULL;
+}
+
+#define PARSE_INT(valp_, mul_)                                                                                                     \
+    if (*buf < '0' || '9' < *buf) {                                                                                                \
+        buf++;                                                                                                                     \
+        *ret = -1;                                                                                                                 \
+        return NULL;                                                                                                               \
+    }                                                                                                                              \
+    *(valp_) = (mul_) * (*buf++ - '0');
+
+#define PARSE_INT_3(valp_)                                                                                                         \
+    do {                                                                                                                           \
+        int res_ = 0;                                                                                                              \
+        PARSE_INT(&res_, 100)                                                                                                      \
+        *valp_ = res_;                                                                                                             \
+        PARSE_INT(&res_, 10)                                                                                                       \
+        *valp_ += res_;                                                                                                            \
+        PARSE_INT(&res_, 1)                                                                                                        \
+        *valp_ += res_;                                                                                                            \
+    } while (0)
+
+/* returned pointer is always within [buf, buf_end), or null */
+static const char *parse_token(const char *buf, const char *buf_end, const char **token, size_t *token_len, char next_char,
+                               int *ret)
+{
+    /* We use pcmpestri to detect non-token characters. This instruction can take no more than eight character ranges (8*2*8=128
+     * bits that is the size of a SSE register). Due to this restriction, characters `|` and `~` are handled in the slow loop. */
+    static const char ALIGNED(16) ranges[] = "\x00 "  /* control chars and up to SP */
+                                             "\"\""   /* 0x22 */
+                                             "()"     /* 0x28,0x29 */
+                                             ",,"     /* 0x2c */
+                                             "//"     /* 0x2f */
+                                             ":@"     /* 0x3a-0x40 */
+                                             "[]"     /* 0x5b-0x5d */
+                                             "{\xff"; /* 0x7b-0xff */
+    const char *buf_start = buf;
+    int found;
+    buf = findchar_fast(buf, buf_end, ranges, sizeof(ranges) - 1, &found);
+    if (!found) {
+        CHECK_EOF();
+    }
+    while (1) {
+        if (*buf == next_char) {
+            break;
+        } else if (!token_char_map[(unsigned char)*buf]) {
+            *ret = -1;
+            return NULL;
+        }
+        ++buf;
+        CHECK_EOF();
+    }
+    *token = buf_start;
+    *token_len = buf - buf_start;
+    return buf;
+}
+
+/* returned pointer is always within [buf, buf_end), or null */
+static const char *parse_http_version(const char *buf, const char *buf_end, int *minor_version, int *ret)
+{
+    /* we want at least [HTTP/1.<two chars>] to try to parse */
+    if (buf_end - buf < 9) {
+        *ret = -2;
+        return NULL;
+    }
+    EXPECT_CHAR_NO_CHECK('H');
+    EXPECT_CHAR_NO_CHECK('T');
+    EXPECT_CHAR_NO_CHECK('T');
+    EXPECT_CHAR_NO_CHECK('P');
+    EXPECT_CHAR_NO_CHECK('/');
+    EXPECT_CHAR_NO_CHECK('1');
+    EXPECT_CHAR_NO_CHECK('.');
+    PARSE_INT(minor_version, 1);
+    return buf;
+}
+
+static const char *parse_headers(const char *buf, const char *buf_end, struct phr_header *headers, size_t *num_headers,
+                                 size_t max_headers, int *ret)
+{
+    for (;; ++*num_headers) {
+        CHECK_EOF();
+        if (*buf == '\015') {
+            ++buf;
+            EXPECT_CHAR('\012');
+            break;
+        } else if (*buf == '\012') {
+            ++buf;
+            break;
+        }
+        if (*num_headers == max_headers) {
+            *ret = -1;
+            return NULL;
+        }
+        if (!(*num_headers != 0 && (*buf == ' ' || *buf == '\t'))) {
+            /* parsing name, but do not discard SP before colon, see
+             * http://www.mozilla.org/security/announce/2006/mfsa2006-33.html */
+            if ((buf = parse_token(buf, buf_end, &headers[*num_headers].name, &headers[*num_headers].name_len, ':', ret)) == NULL) {
+                return NULL;
+            }
+            if (headers[*num_headers].name_len == 0) {
+                *ret = -1;
+                return NULL;
+            }
+            ++buf;
+            for (;; ++buf) {
+                CHECK_EOF();
+                if (!(*buf == ' ' || *buf == '\t')) {
+                    break;
+                }
+            }
+        } else {
+            headers[*num_headers].name = NULL;
+            headers[*num_headers].name_len = 0;
+        }
+        const char *value;
+        size_t value_len;
+        if ((buf = get_token_to_eol(buf, buf_end, &value, &value_len, ret)) == NULL) {
+            return NULL;
+        }
+        /* remove trailing SPs and HTABs */
+        const char *value_end = value + value_len;
+        for (; value_end != value; --value_end) {
+            const char c = *(value_end - 1);
+            if (!(c == ' ' || c == '\t')) {
+                break;
+            }
+        }
+        headers[*num_headers].value = value;
+        headers[*num_headers].value_len = value_end - value;
+    }
+    return buf;
+}
+
+static const char *parse_request(const char *buf, const char *buf_end, const char **method, size_t *method_len, const char **path,
+                                 size_t *path_len, int *minor_version, struct phr_header *headers, size_t *num_headers,
+                                 size_t max_headers, int *ret)
+{
+    /* skip first empty line (some clients add CRLF after POST content) */
+    CHECK_EOF();
+    if (*buf == '\015') {
+        ++buf;
+        EXPECT_CHAR('\012');
+    } else if (*buf == '\012') {
+        ++buf;
+    }
+
+    /* parse request line */
+    if ((buf = parse_token(buf, buf_end, method, method_len, ' ', ret)) == NULL) {
+        return NULL;
+    }
+    do {
+        ++buf;
+        CHECK_EOF();
+    } while (*buf == ' ');
+    ADVANCE_TOKEN(*path, *path_len);
+    do {
+        ++buf;
+        CHECK_EOF();
+    } while (*buf == ' ');
+    if (*method_len == 0 || *path_len == 0) {
+        *ret = -1;
+        return NULL;
+    }
+    if ((buf = parse_http_version(buf, buf_end, minor_version, ret)) == NULL) {
+        return NULL;
+    }
+    if (*buf == '\015') {
+        ++buf;
+        EXPECT_CHAR('\012');
+    } else if (*buf == '\012') {
+        ++buf;
+    } else {
+        *ret = -1;
+        return NULL;
+    }
+
+    return parse_headers(buf, buf_end, headers, num_headers, max_headers, ret);
+}
+
+int phr_parse_request(const char *buf_start, size_t len, const char **method, size_t *method_len, const char **path,
+                      size_t *path_len, int *minor_version, struct phr_header *headers, size_t *num_headers, size_t last_len)
+{
+    const char *buf = buf_start, *buf_end = buf_start + len;
+    size_t max_headers = *num_headers;
+    int r;
+
+    *method = NULL;
+    *method_len = 0;
+    *path = NULL;
+    *path_len = 0;
+    *minor_version = -1;
+    *num_headers = 0;
+
+    /* if last_len != 0, check if the request is complete (a fast countermeasure
+       againt slowloris */
+    if (last_len != 0 && is_complete(buf, buf_end, last_len, &r) == NULL) {
+        return r;
+    }
+
+    if ((buf = parse_request(buf, buf_end, method, method_len, path, path_len, minor_version, headers, num_headers, max_headers,
+                             &r)) == NULL) {
+        return r;
+    }
+
+    return (int)(buf - buf_start);
+}
+
+static const char *parse_response(const char *buf, const char *buf_end, int *minor_version, int *status, const char **msg,
+                                  size_t *msg_len, struct phr_header *headers, size_t *num_headers, size_t max_headers, int *ret)
+{
+    /* parse "HTTP/1.x" */
+    if ((buf = parse_http_version(buf, buf_end, minor_version, ret)) == NULL) {
+        return NULL;
+    }
+    /* skip space */
+    if (*buf != ' ') {
+        *ret = -1;
+        return NULL;
+    }
+    do {
+        ++buf;
+        CHECK_EOF();
+    } while (*buf == ' ');
+    /* parse status code, we want at least [:digit:][:digit:][:digit:]<other char> to try to parse */
+    if (buf_end - buf < 4) {
+        *ret = -2;
+        return NULL;
+    }
+    PARSE_INT_3(status);
+
+    /* get message including preceding space */
+    if ((buf = get_token_to_eol(buf, buf_end, msg, msg_len, ret)) == NULL) {
+        return NULL;
+    }
+    if (*msg_len == 0) {
+        /* ok */
+    } else if (**msg == ' ') {
+        /* Remove preceding space. Successful return from `get_token_to_eol` guarantees that we would hit something other than SP
+         * before running past the end of the given buffer. */
+        do {
+            ++*msg;
+            --*msg_len;
+        } while (**msg == ' ');
+    } else {
+        /* garbage found after status code */
+        *ret = -1;
+        return NULL;
+    }
+
+    return parse_headers(buf, buf_end, headers, num_headers, max_headers, ret);
+}
+
+int phr_parse_response(const char *buf_start, size_t len, int *minor_version, int *status, const char **msg, size_t *msg_len,
+                       struct phr_header *headers, size_t *num_headers, size_t last_len)
+{
+    const char *buf = buf_start, *buf_end = buf + len;
+    size_t max_headers = *num_headers;
+    int r;
+
+    *minor_version = -1;
+    *status = 0;
+    *msg = NULL;
+    *msg_len = 0;
+    *num_headers = 0;
+
+    /* if last_len != 0, check if the response is complete (a fast countermeasure
+       against slowloris */
+    if (last_len != 0 && is_complete(buf, buf_end, last_len, &r) == NULL) {
+        return r;
+    }
+
+    if ((buf = parse_response(buf, buf_end, minor_version, status, msg, msg_len, headers, num_headers, max_headers, &r)) == NULL) {
+        return r;
+    }
+
+    return (int)(buf - buf_start);
+}
+
+int phr_parse_headers(const char *buf_start, size_t len, struct phr_header *headers, size_t *num_headers, size_t last_len)
+{
+    const char *buf = buf_start, *buf_end = buf + len;
+    size_t max_headers = *num_headers;
+    int r;
+
+    *num_headers = 0;
+
+    /* if last_len != 0, check if the response is complete (a fast countermeasure
+       against slowloris */
+    if (last_len != 0 && is_complete(buf, buf_end, last_len, &r) == NULL) {
+        return r;
+    }
+
+    if ((buf = parse_headers(buf, buf_end, headers, num_headers, max_headers, &r)) == NULL) {
+        return r;
+    }
+
+    return (int)(buf - buf_start);
+}
+
+enum {
+    CHUNKED_IN_CHUNK_SIZE,
+    CHUNKED_IN_CHUNK_EXT,
+    CHUNKED_IN_CHUNK_DATA,
+    CHUNKED_IN_CHUNK_CRLF,
+    CHUNKED_IN_TRAILERS_LINE_HEAD,
+    CHUNKED_IN_TRAILERS_LINE_MIDDLE
+};
+
+static int decode_hex(int ch)
+{
+    if ('0' <= ch && ch <= '9') {
+        return ch - '0';
+    } else if ('A' <= ch && ch <= 'F') {
+        return ch - 'A' + 0xa;
+    } else if ('a' <= ch && ch <= 'f') {
+        return ch - 'a' + 0xa;
+    } else {
+        return -1;
+    }
+}
+
+ssize_t phr_decode_chunked(struct phr_chunked_decoder *decoder, char *buf, size_t *_bufsz)
+{
+    size_t dst = 0, src = 0, bufsz = *_bufsz;
+    ssize_t ret = -2; /* incomplete */
+
+    while (1) {
+        switch (decoder->_state) {
+        case CHUNKED_IN_CHUNK_SIZE:
+            for (;; ++src) {
+                int v;
+                if (src == bufsz)
+                    goto Exit;
+                if ((v = decode_hex(buf[src])) == -1) {
+                    if (decoder->_hex_count == 0) {
+                        ret = -1;
+                        goto Exit;
+                    }
+                    break;
+                }
+                if (decoder->_hex_count == sizeof(size_t) * 2) {
+                    ret = -1;
+                    goto Exit;
+                }
+                decoder->bytes_left_in_chunk = decoder->bytes_left_in_chunk * 16 + v;
+                ++decoder->_hex_count;
+            }
+            decoder->_hex_count = 0;
+            decoder->_state = CHUNKED_IN_CHUNK_EXT;
+        /* fallthru */
+        case CHUNKED_IN_CHUNK_EXT:
+            /* RFC 7230 A.2 "Line folding in chunk extensions is disallowed" */
+            for (;; ++src) {
+                if (src == bufsz)
+                    goto Exit;
+                if (buf[src] == '\012')
+                    break;
+            }
+            ++src;
+            if (decoder->bytes_left_in_chunk == 0) {
+                if (decoder->consume_trailer) {
+                    decoder->_state = CHUNKED_IN_TRAILERS_LINE_HEAD;
+                    break;
+                } else {
+                    goto Complete;
+                }
+            }
+            decoder->_state = CHUNKED_IN_CHUNK_DATA;
+        /* fallthru */
+        case CHUNKED_IN_CHUNK_DATA: {
+            size_t avail = bufsz - src;
+            if (avail < decoder->bytes_left_in_chunk) {
+                if (dst != src)
+                    memmove(buf + dst, buf + src, avail);
+                src += avail;
+                dst += avail;
+                decoder->bytes_left_in_chunk -= avail;
+                goto Exit;
+            }
+            if (dst != src)
+                memmove(buf + dst, buf + src, decoder->bytes_left_in_chunk);
+            src += decoder->bytes_left_in_chunk;
+            dst += decoder->bytes_left_in_chunk;
+            decoder->bytes_left_in_chunk = 0;
+            decoder->_state = CHUNKED_IN_CHUNK_CRLF;
+        }
+        /* fallthru */
+        case CHUNKED_IN_CHUNK_CRLF:
+            for (;; ++src) {
+                if (src == bufsz)
+                    goto Exit;
+                if (buf[src] != '\015')
+                    break;
+            }
+            if (buf[src] != '\012') {
+                ret = -1;
+                goto Exit;
+            }
+            ++src;
+            decoder->_state = CHUNKED_IN_CHUNK_SIZE;
+            break;
+        case CHUNKED_IN_TRAILERS_LINE_HEAD:
+            for (;; ++src) {
+                if (src == bufsz)
+                    goto Exit;
+                if (buf[src] != '\015')
+                    break;
+            }
+            if (buf[src++] == '\012')
+                goto Complete;
+            decoder->_state = CHUNKED_IN_TRAILERS_LINE_MIDDLE;
+        /* fallthru */
+        case CHUNKED_IN_TRAILERS_LINE_MIDDLE:
+            for (;; ++src) {
+                if (src == bufsz)
+                    goto Exit;
+                if (buf[src] == '\012')
+                    break;
+            }
+            ++src;
+            decoder->_state = CHUNKED_IN_TRAILERS_LINE_HEAD;
+            break;
+        default:
+            assert(!"decoder is corrupt");
+        }
+    }
+
+Complete:
+    ret = bufsz - src;
+Exit:
+    if (dst != src)
+        memmove(buf + dst, buf + src, bufsz - src);
+    *_bufsz = dst;
+    return ret;
+}
+
+int phr_decode_chunked_is_in_data(struct phr_chunked_decoder *decoder)
+{
+    return decoder->_state == CHUNKED_IN_CHUNK_DATA;
+}
+
+#undef CHECK_EOF
+#undef EXPECT_CHAR
+#undef ADVANCE_TOKEN

src/event_loop/event_loop.c

@@ -1,192 +0,0 @@
-#include <errno.h>
-#include <fcntl.h>
-#include <netinet/in.h>
-#include <poll.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <unistd.h>
-
-#include "event_loop.h"
-#include "log.h"
-
-static void event_loop_fd_set_nb(int fd) {
-  int flags = fcntl(fd, F_GETFL);
-
-  flags |= O_NONBLOCK;
-
-  fcntl(fd, F_SETFL, flags);
-}
-
-event_loop *event_loop_init() {
-  event_loop *el = calloc(sizeof(event_loop), 1);
-
-  // No idea if this is a good starter value
-  el->connections = calloc(sizeof(event_loop_conn *), 16);
-  el->connection_count = 16;
-
-  return el;
-}
-
-int event_loop_put(event_loop *el, event_loop_conn *conn) {
-  if ((size_t)conn->fd >= el->connection_count) {
-    event_loop_conn **resized =
-        realloc(el->connections, sizeof(event_loop_conn *) * (conn->fd + 1));
-
-    if (resized == NULL) {
-      return -1;
-    }
-
-    el->connections = resized;
-    el->connection_count = conn->fd + 1;
-  }
-
-  el->connections[conn->fd] = conn;
-
-  return 0;
-}
-
-int event_loop_accept(event_loop *el, int fd) {
-  struct sockaddr_in client_addr;
-  socklen_t socklen = sizeof(client_addr);
-  int connfd = accept(fd, (struct sockaddr *)&client_addr, &socklen);
-
-  if (connfd < 0) {
-    return -1;
-  }
-
-  // set the new connection fd to nonblocking mode
-  event_loop_fd_set_nb(connfd);
-
-  // creating the struct Conn
-  event_loop_conn *conn = event_loop_conn_init(el);
-
-  // Close the connectoin if we fail to allocate a connection struct
-  if (conn == NULL) {
-    close(connfd);
-
-    return -3;
-  }
-
-  conn->fd = connfd;
-  conn->state = event_loop_conn_state_req;
-
-  int res = event_loop_put(el, conn);
-
-  if (res != 0) {
-    close(connfd);
-
-    return -4;
-  }
-
-  debug("Connection established on fd %i", connfd);
-
-  return 0;
-}
-
-void event_loop_run(event_loop *el, int port) {
-  int fd = socket(AF_INET, SOCK_STREAM, 0);
-
-  if (fd < 0) {
-    critical(1, "Failed to open listening socket, errno: %i", errno);
-  }
-
-  int val = 1;
-  setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
-
-  // bind
-  struct sockaddr_in addr = {.sin_family = AF_INET,
-                             .sin_port = ntohs(port),
-                             .sin_addr.s_addr = ntohl(0)};
-
-  int res = bind(fd, (const struct sockaddr *)&addr, sizeof(addr));
-
-  if (res) {
-    critical(1, "Failed to bind listening socket, errno: %i", errno);
-  }
-
-  debug("Listening socket bound to fd %i", fd);
-
-  res = listen(fd, SOMAXCONN);
-
-  if (res) {
-    critical(1, "Failed to start listening on listening socket, errno: %i",
-             errno);
-  }
-
-  // The listening socket is always poll'ed in non-blocking mode as well
-  event_loop_fd_set_nb(fd);
-
-  // TODO don't hardcode the number 32
-  struct pollfd *poll_args = calloc(sizeof(struct pollfd), 32);
-
-  // for convenience, the listening fd is put in the first position
-  struct pollfd pfd = {fd, POLLIN, 0};
-  poll_args[0] = pfd;
-
-  event_loop_conn *conn;
-  int events;
-
-  info("Starting event loop on port %i", port);
-
-  while (1) {
-    size_t poll_args_count = 1;
-
-    // connection fds
-    for (size_t i = 0; i < el->connection_count; i++) {
-      conn = el->connections[i];
-
-      if (conn == NULL) {
-        continue;
-      }
-
-      events = (conn->state == event_loop_conn_state_req) ? POLLIN : POLLOUT;
-      events |= POLLERR;
-
-      pfd.fd = conn->fd;
-      pfd.events = events;
-
-      poll_args[poll_args_count] = pfd;
-      poll_args_count++;
-
-      // We do at most 32 connections at a time for now
-      if (poll_args_count == 32)
-        break;
-    }
-
-    // poll for active fds
-    // the timeout argument doesn't matter here
-    int rv = poll(poll_args, (nfds_t)poll_args_count, -1);
-
-    if (rv < 0) {
-      critical(1, "Poll failed, errno: %i", errno);
-    }
-
-    // process active connections
-    for (size_t i = 1; i < poll_args_count; i++) {
-      if (poll_args[i].revents) {
-        conn = el->connections[poll_args[i].fd];
-
-        event_loop_conn_io(el, conn);
-
-        if (conn->state == event_loop_conn_state_end) {
-          // client closed normally, or something bad happened.
-          // destroy this connection
-          el->connections[conn->fd] = NULL;
-
-          close(conn->fd);
-          debug("Connection closed on fd %i", conn->fd);
-          event_loop_conn_free(el, conn);
-        }
-      }
-    }
-
-    // try to accept a new connection if the listening fd is active
-    if (poll_args[0].revents) {
-      event_loop_accept(el, fd);
-    }
-  }
-}

src/event_loop/event_loop_conn.c

@@ -1,13 +0,0 @@
-#include "event_loop.h"
-
-event_loop_conn *event_loop_conn_init(event_loop *el) {
-  event_loop_conn *conn = calloc(sizeof(event_loop_conn), 1);
-  conn->ctx = el->ctx_init(el->gctx);
-
-  return conn;
-}
-
-void event_loop_conn_free(event_loop *el, event_loop_conn *conn) {
-  el->ctx_free(conn->ctx);
-  free(conn);
-}

src/event_loop/event_loop_io.c

@@ -1,98 +0,0 @@
-#include <errno.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "event_loop.h"
-
-void event_loop_conn_io_res(event_loop *el, event_loop_conn *conn) {
-  do {
-    ssize_t res = 0;
-    size_t remain = conn->wbuf_size - conn->wbuf_sent;
-
-    do {
-      res = write(conn->fd, &conn->wbuf[conn->wbuf_sent], remain);
-    } while (res < 0 && errno == EINTR);
-
-    // EAGAIN doesn't mean there was an error, but rather that there's no more
-    // data right now, but there might be more later, aka "try again later"
-    if (res < 0 && errno == EAGAIN) {
-      return;
-    }
-
-    // If it's not EGAIN, there was an error writing so we simply end the
-    // request
-    if (res < 0) {
-      conn->state = event_loop_conn_state_end;
-      return;
-    }
-
-    conn->wbuf_sent += (size_t)res;
-
-    // After writing the entire buffer, we run the write_data command to receive
-    // new data, or exit the loop
-    if (conn->wbuf_sent == conn->wbuf_size) {
-      conn->wbuf_sent = 0;
-      conn->wbuf_size = 0;
-
-      el->write_data(conn);
-    }
-  } while (conn->state == event_loop_conn_state_res);
-}
-
-/**
- * Read new data into the read buffer. This command performs at most one
- * successful read syscall.
- *
- * Returns whether the function should be retried immediately or not.
- */
-void event_loop_conn_io_req(event_loop *el, event_loop_conn *conn) {
-  do {
-    // Move remaining data to start of buffer
-    memmove(conn->rbuf, &conn->rbuf[conn->rbuf_read],
-            conn->rbuf_size - conn->rbuf_read);
-    conn->rbuf_size -= conn->rbuf_read;
-    conn->rbuf_read = 0;
-
-    ssize_t res;
-    size_t cap = EVENT_LOOP_BUFFER_SIZE - conn->rbuf_size;
-
-    // Try to read at most cap bytes from the file descriptor
-    do {
-      res = read(conn->fd, &conn->rbuf[conn->rbuf_size], cap);
-    } while (res < 0 && errno == EINTR);
-
-    // EGAIN means we try again later
-    if (res < 0 && errno == EAGAIN) {
-      return;
-    }
-
-    // Any other negative error message means the read errored out. If res is 0,
-    // we've reached the end of the input which (usually) means the remote peer
-    // has closed the connection. Either way, we close the connection.
-    if (res <= 0) {
-      conn->state = event_loop_conn_state_end;
-
-      return;
-    }
-
-    conn->rbuf_size += (size_t)res;
-
-    // This loop allows processing multiple requests from a single read buffer
-    while (el->handle_data(conn))
-      ;
-  }
-  // We can keep reading as long as we're in request mode
-  while (conn->state == event_loop_conn_state_req);
-}
-
-void event_loop_conn_io(event_loop *el, event_loop_conn *conn) {
-  switch (conn->state) {
-  case event_loop_conn_state_req:
-    event_loop_conn_io_req(el, conn);
-    break;
-  case event_loop_conn_state_res:
-    event_loop_conn_io_res(el, conn);
-    break;
-  case event_loop_conn_state_end:;
-  }
-}

src/http/res.c

@@ -1,37 +0,0 @@
-#include <sys/stat.h>
-
-#include "http/res.h"
-
-void http_res_set_body_buf(http_response *res, const char *body,
-                           size_t body_len, bool owned) {
-  res->body.type = http_body_buf;
-  res->body.buf = (char *)body;
-  res->body.expected_len = body_len;
-  res->body.buf_owned = owned;
-}
-
-void http_res_set_body_file(http_response *res, const char *filename) {
-  struct stat st;
-  stat(filename, &st);
-
-  // TODO error handling
-  FILE *f = fopen(filename, "r");
-
-  res->body.type = http_body_file;
-  res->body.file = f;
-  res->body.expected_len = st.st_size;
-}
-
-void http_res_add_header(http_response *res, http_header type,
-                         const char *value, bool owned) {
-  res->headers[res->header_count].type = type;
-  res->headers[res->header_count].value = value;
-  res->headers[res->header_count].owned = owned;
-
-  res->header_count++;
-}
-
-void http_res_set_mime_type(http_response *res, http_mime_type mime_type) {
-  http_res_add_header(res, http_header_content_type,
-                      http_mime_type_names[mime_type][1], false);
-}

src/http/types.c

@@ -1,33 +0,0 @@
-#include <stdlib.h>
-
-#include "http/types.h"
-
-http_body *http_body_init() { return calloc(sizeof(http_body), 1); }
-
-void http_body_reset(http_body *body) {
-  if (body->type == http_body_file) {
-    fclose(body->file);
-  }
-
-  if (body->buf_owned) {
-    free(body->buf);
-  }
-
-  if (body->fname_owned) {
-    free(body->fname);
-  }
-
-  body->type = 0;
-  body->buf = NULL;
-  body->buf_owned = false;
-  body->file = NULL;
-  body->fname = NULL;
-  body->fname_owned = false;
-  body->expected_len = 0;
-  body->len = 0;
-}
-
-void http_body_free(http_body *body) {
-  http_body_reset(body);
-  free(body);
-}

src/http_loop/http_loop.c

@@ -1,101 +0,0 @@
-#include <regex.h>
-
-#include "http/types.h"
-#include "http_loop.h"
-#include "log.h"
-
-const http_step http_default_res_steps[HTTP_LOOP_MAX_STEPS] = {
-    http_loop_step_write_header, http_loop_step_write_body, NULL};
-
-bool http_loop_handle_request(event_loop_conn *conn) {
-  // Prevents the request handler function from looping indefinitely without
-  // ever consuming new data
-  if (conn->rbuf_size - conn->rbuf_read == 0) {
-    return false;
-  }
-
-  http_loop_ctx *ctx = conn->ctx;
-
-  // If route is defined, we're currently processing a request
-  if (ctx->route == NULL) {
-    http_parse_error res = http_loop_parse_request(conn);
-
-    if (res == http_parse_error_invalid ||
-        (res == http_parse_error_incomplete &&
-         conn->rbuf_size == EVENT_LOOP_BUFFER_SIZE)) {
-      conn->state = event_loop_conn_state_end;
-
-      return false;
-    }
-
-    conn->rbuf_read += ctx->req.len;
-
-    // It's fun to respond with extremely specific error messages
-    // https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/501
-    if (res == http_parse_error_unknown_method) {
-      ctx->res.status = http_method_not_implemented;
-      conn->state = event_loop_conn_state_res;
-    } else {
-      http_loop_route_request(conn);
-    }
-  }
-
-  if (conn->state == event_loop_conn_state_req) {
-    http_loop_process_request(conn);
-  }
-
-  // TODO in highly concurrent situations, it might actually be better to always
-  // return false here, as this allows cycling better through all connections
-  return conn->state == event_loop_conn_state_req;
-}
-
-event_loop *http_loop_init(http_route *routes, size_t route_count,
-                           void *custom_gctx, void *(*custom_ctx_init)(),
-                           void(custom_ctx_reset)(), void(custom_ctx_free)()) {
-  event_loop *el = event_loop_init();
-
-  el->ctx_init = (void *(*)(void *))http_loop_ctx_init;
-  el->ctx_free = (void (*)(void *))http_loop_ctx_free;
-  el->handle_data = http_loop_handle_request;
-  el->write_data = http_loop_handle_response;
-
-  http_loop_gctx *gctx = http_loop_gctx_init();
-  gctx->c = custom_gctx;
-  gctx->routes = routes;
-  gctx->route_count = route_count;
-  gctx->custom_ctx_init = custom_ctx_init;
-  gctx->custom_ctx_reset = custom_ctx_reset;
-  gctx->custom_ctx_free = custom_ctx_free;
-  el->gctx = gctx;
-
-  return el;
-}
-
-void http_loop_set_api_key(http_loop *hl, const char *api_key) {
-  http_loop_gctx *gctx = hl->gctx;
-  gctx->api_key = api_key;
-}
-
-void http_loop_run(event_loop *el, int port) {
-  debug("Compiling RegEx routes");
-
-  http_loop_gctx *gctx = el->gctx;
-
-  for (size_t i = 0; i < gctx->route_count; i++) {
-    http_route *route = &gctx->routes[i];
-
-    if (route->type == http_route_regex) {
-      regex_t *r = calloc(sizeof(regex_t), 1);
-
-      if (regcomp(r, route->path, REG_EXTENDED) != 0) {
-        critical(1, "RegEx expression '%s' failed to compile", route->path);
-      }
-
-      route->regex = r;
-    }
-  }
-
-  debug("RegEx routes compiled successfully");
-
-  event_loop_run(el, port);
-}

src/http_loop/http_loop_ctx.c

@@ -1,52 +0,0 @@
-#include <stdio.h>
-
-#include "http/types.h"
-#include "http_loop.h"
-
-http_loop_gctx *http_loop_gctx_init() {
-  http_loop_gctx *gctx = calloc(sizeof(http_loop_gctx), 1);
-
-  return gctx;
-}
-
-http_loop_ctx *http_loop_ctx_init(http_loop_gctx *g) {
-  http_loop_ctx *ctx = calloc(sizeof(http_loop_ctx), 1);
-  ctx->g = g;
-  ctx->c = g->custom_ctx_init();
-
-  return ctx;
-}
-
-void http_loop_ctx_free(http_loop_ctx *ctx) {
-  http_loop_ctx_reset(ctx);
-  ctx->g->custom_ctx_free(ctx->c);
-
-  free(ctx);
-}
-
-void http_loop_ctx_reset(http_loop_ctx *ctx) {
-  ctx->route = NULL;
-  ctx->current_step = 0;
-
-  if (ctx->res.head != NULL) {
-    free((void *)ctx->res.head);
-    ctx->res.head = NULL;
-  }
-
-  http_body_reset(&ctx->req.body);
-  http_body_reset(&ctx->res.body);
-
-  for (size_t i = 0; i < ctx->res.header_count; i++) {
-    if (ctx->res.headers[i].owned) {
-      free((void *)ctx->res.headers[i].value);
-    }
-  }
-
-  ctx->res.header_count = 0;
-
-  ctx->res.status = 0;
-  ctx->res.head_len = 0;
-  ctx->res.head_written = 0;
-
-  ctx->g->custom_ctx_reset(ctx->c);
-}

src/http_loop/http_loop_req.c

@@ -1,149 +0,0 @@
-#include <string.h>
-
-#include "http_loop.h"
-#include "log.h"
-
-http_parse_error http_loop_parse_request(event_loop_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
-
-  // First we try to parse the incoming HTTP request
-  size_t num_headers = HTTP_MAX_ALLOWED_HEADERS;
-  http_request *req = &ctx->req;
-
-  const char *method;
-  size_t method_len;
-  char *path;
-  size_t path_len;
-
-  int res =
-      phr_parse_request((const char *)&conn->rbuf[conn->rbuf_read],
-                        conn->rbuf_size - conn->rbuf_read, &method, &method_len,
-                        (const char **)&path, &path_len, &req->minor_version,
-                        req->headers, &num_headers, 0);
-
-  if (res == -1) {
-    return http_parse_error_invalid;
-  } else if (res == -2) {
-    return http_parse_error_incomplete;
-  }
-
-  req->num_headers = num_headers;
-  req->len = res;
-
-  // Try to parse the method type
-  bool match = false;
-  size_t i = 0;
-
-  for (i = 0; i < http_method_names_len; i++) {
-    if (strncmp(method, http_method_names[i], method_len) == 0) {
-      req->method = i;
-      match = true;
-    }
-  }
-
-  if (!match) {
-    return http_parse_error_unknown_method;
-  }
-
-  // Split path into path & query
-  i = 0;
-  bool no_query = true;
-
-  while (no_query && i < path_len) {
-    if (path[i] == '?') {
-      // Ensure we don't store an invalid pointer if the request simply ends
-      // with '?'
-      if (i + 1 < req->path_len) {
-        req->query = &path[i + 1];
-        req->query_len = path_len - (i + 1);
-      }
-
-      path_len = i;
-
-      no_query = false;
-    }
-
-    i++;
-  }
-
-  // The path needs to be NULL-terminated in order for regex routes to be
-  // matched properly. We know we can overwrite this char because it's either
-  // '?' if there's a query, or '\n' because we know the buf contains a valid
-  // HTTP rqeuest
-  path[path_len] = '\0';
-
-  req->path = path;
-  req->path_len = path_len;
-
-  // Ensure we clear the old request's query
-  if (no_query) {
-    req->query = NULL;
-    req->query_len = 0;
-  }
-
-  return http_parse_error_ok;
-}
-
-void http_loop_route_request(event_loop_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
-  http_loop_gctx *gctx = ctx->g;
-
-  info("%s %.*s", http_method_names[ctx->req.method], ctx->req.path_len,
-       ctx->req.path);
-
-  http_route *route;
-  bool path_matched = false;
-
-  for (size_t i = 0; i < gctx->route_count; i++) {
-    route = &gctx->routes[i];
-
-    switch (route->type) {
-    case http_route_literal:
-      if (strncmp(route->path, ctx->req.path, ctx->req.path_len) == 0) {
-        path_matched = true;
-
-        if (ctx->req.method == route->method) {
-          ctx->route = route;
-          return;
-        }
-      }
-      break;
-    case http_route_regex:
-      if (regexec(route->regex, ctx->req.path, HTTP_MAX_REGEX_GROUPS,
-                  ctx->req.regex_groups, 0) == 0) {
-        path_matched = true;
-
-        if (ctx->req.method == route->method) {
-          ctx->route = route;
-          return;
-        }
-      }
-      break;
-    }
-  }
-
-  // Fallthrough case
-  ctx->res.status = path_matched ? http_method_not_allowed : http_not_found;
-  conn->state = event_loop_conn_state_res;
-}
-
-void http_loop_process_request(event_loop_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
-
-  // We keep processing step functions as long as they don't need to wait for
-  // I/O
-  while ((conn->state == event_loop_conn_state_req) &&
-         (ctx->route->steps[ctx->current_step] != NULL) &&
-         ctx->route->steps[ctx->current_step](conn)) {
-    ctx->current_step++;
-  }
-
-  // Request processing can stop early by switching the connection state
-  // Either way, we reset the step counter as it will be used by the response
-  // steps
-  if ((conn->state != event_loop_conn_state_req) ||
-      (ctx->route->steps[ctx->current_step] == NULL)) {
-    ctx->current_step = 0;
-    conn->state = event_loop_conn_state_res;
-  }
-}

src/http_loop/http_loop_res.c

@@ -1,127 +0,0 @@
-#include "http_loop.h"
-#include "log.h"
-
-// cppcheck-suppress syntaxError
-static const char *http_response_format = "HTTP/1.1 %i %s\n"
-                                          "Server: lander/" LANDER_VERSION "\n"
-                                          "Content-Length: %lu\n";
-
-/*
- * This function precalculates the size of the total buffer required using
- * snprintf. When this function is called with a buf size of 0, it never tries
- * to write any data, but it does return the amount of bytes that would be
- * written.
- */
-void http_loop_init_header(http_response *res) {
-  if (res->status == 0) {
-    res->status = http_ok;
-  }
-
-  const char *response_type_name =
-      http_status_names[res->status / 100 - 1][res->status % 100];
-
-  // First we calculate the size of the start of the header
-  int buf_size = snprintf(NULL, 0, http_response_format, res->status,
-                          response_type_name, res->body.expected_len);
-
-  // We add each header's required size
-  for (size_t i = 0; i < res->header_count; i++) {
-    buf_size +=
-        snprintf(NULL, 0, "%s: %s\n", http_header_names[res->headers[i].type],
-                 res->headers[i].value);
-  }
-
-  // The + 1 is required to store the final null byte, but we will replace it
-  // with the required final newline
-  char *buf = malloc(buf_size + 1);
-  buf_size = sprintf(buf, http_response_format, res->status, response_type_name,
-                     res->body.expected_len);
-
-  for (size_t i = 0; i < res->header_count; i++) {
-    buf_size +=
-        sprintf(&buf[buf_size], "%s: %s\n",
-                http_header_names[res->headers[i].type], res->headers[i].value);
-  }
-
-  buf[buf_size] = '\n';
-
-  res->head = buf;
-  res->head_len = buf_size + 1;
-}
-
-bool http_loop_step_write_header(event_loop_conn *conn) {
-  http_response *res = &((http_loop_ctx *)conn->ctx)->res;
-
-  // Create head response
-  if (res->head == NULL) {
-    http_loop_init_header(res);
-  }
-
-  // Step has finished its work
-  if (res->head_written == res->head_len) {
-    return true;
-  }
-
-  size_t bytes_to_write = MIN(res->head_len - res->head_written,
-                              EVENT_LOOP_BUFFER_SIZE - conn->wbuf_size);
-  memcpy(&conn->wbuf[conn->wbuf_size], &res->head[res->head_written],
-         bytes_to_write);
-
-  conn->wbuf_size += bytes_to_write;
-  res->head_written += bytes_to_write;
-
-  return false;
-}
-
-bool http_loop_step_write_body(event_loop_conn *conn) {
-  http_response *res = &((http_loop_ctx *)conn->ctx)->res;
-
-  if (res->body.expected_len == res->body.len) {
-    return true;
-  }
-
-  size_t bytes_to_write = MIN(res->body.expected_len - res->body.len,
-                              EVENT_LOOP_BUFFER_SIZE - conn->wbuf_size);
-
-  size_t bytes_written;
-
-  switch (res->body.type) {
-  case http_body_buf:
-    memcpy(&conn->wbuf[conn->wbuf_size], &(res->body.buf)[res->body.len],
-           bytes_to_write);
-    conn->wbuf_size += bytes_to_write;
-    res->body.len += bytes_to_write;
-    break;
-  case http_body_file:
-    bytes_written = fread(&conn->wbuf[conn->wbuf_size], sizeof(uint8_t),
-                          bytes_to_write, res->body.file);
-    conn->wbuf_size += bytes_written;
-    res->body.len += bytes_written;
-    break;
-  }
-
-  return false;
-}
-
-void http_loop_handle_response(event_loop_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
-
-  // Non-routed requests also need to be processed
-  const http_step *steps =
-      ctx->route != NULL ? ctx->route->steps_res : http_default_res_steps;
-
-  while ((conn->state == event_loop_conn_state_res) &&
-         (steps[ctx->current_step] != NULL) && steps[ctx->current_step](conn)) {
-    ctx->current_step++;
-  }
-
-  // Response processing can stop early be switching the connection state
-  // After response processing has finished its work, we reset the context to
-  // prepare for a new request
-  if ((conn->state != event_loop_conn_state_res) ||
-      (steps[ctx->current_step] == NULL)) {
-    http_loop_ctx_reset(ctx);
-
-    conn->state = event_loop_conn_state_req;
-  }
-}

src/http_loop/http_loop_steps.c

@@ -1,179 +0,0 @@
-#include <math.h>
-#include <string.h>
-
-#include "http_loop.h"
-#include "lander.h"
-
-// Just a naive pow implementation; might improve later
-static uint64_t ipow(uint64_t base, uint64_t power) {
-  uint64_t res = 1;
-
-  while (power > 0) {
-    res *= base;
-    power--;
-  }
-
-  return res;
-}
-
-/*
- * Converts a string to a number, returning true if the string contained a valid
- * positive number.
- */
-static bool string_to_num(size_t *res, const char *s, size_t len) {
-  *res = 0;
-
-  for (size_t i = 0; i < len; i++) {
-    int val = s[i] - '0';
-
-    if (val < 0 || val > 9) {
-      return false;
-    }
-
-    *res += (uint64_t)val * ipow(10, (len - 1) - i);
-  }
-
-  return true;
-}
-
-bool http_loop_step_parse_content_length(event_loop_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
-
-  for (size_t i = 0; i < ctx->req.num_headers; i++) {
-    const struct phr_header *header = &ctx->req.headers[i];
-
-    if (strncmp(header->name, "Content-Length", header->name_len) == 0) {
-      // If the content length header is present but contains an invalid
-      // number, we return a bad request error
-      if (!string_to_num(&ctx->req.body.expected_len, header->value,
-                         header->value_len)) {
-        ctx->res.status = http_bad_request;
-        conn->state = event_loop_conn_state_res;
-
-        return true;
-      }
-      // The content length was actually 0, so we can instantly return here
-      else if (ctx->req.body.expected_len == 0) {
-        return true;
-      }
-    }
-  }
-
-  // A zero here means there's no content length header
-  if (ctx->req.body.expected_len == 0) {
-    ctx->res.status = http_length_required;
-    conn->state = event_loop_conn_state_res;
-  }
-
-  return true;
-}
-
-/*
- * Try to find and parse the Content-Length header. This function returns true
- * if it was successful. If false is returned, the underlying step should
- * immediately exit.
- */
-bool try_parse_content_length(event_loop_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
-
-  for (size_t i = 0; i < ctx->req.num_headers; i++) {
-    const struct phr_header *header = &ctx->req.headers[i];
-
-    if (strncmp(header->name, "Content-Length", header->name_len) == 0) {
-      // If the content length header is present but contains an invalid
-      // number, we return a bad request error
-      if (!string_to_num(&ctx->req.body.expected_len, header->value,
-                         header->value_len)) {
-        ctx->res.status = http_bad_request;
-        conn->state = event_loop_conn_state_res;
-
-        return false;
-      }
-      // The content length was actually 0, so we can instantly return here
-      else if (ctx->req.body.expected_len == 0) {
-        return false;
-      }
-    }
-  }
-
-  // A zero here means there's no content length header
-  if (ctx->req.body.expected_len == 0) {
-    ctx->res.status = http_length_required;
-    conn->state = event_loop_conn_state_res;
-
-    return false;
-  }
-
-  return true;
-}
-
-bool http_loop_step_body_to_buf(event_loop_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
-
-  if (ctx->req.body.expected_len == 0) {
-    if (!try_parse_content_length(conn)) {
-      return true;
-    }
-
-    ctx->req.body.type = http_body_buf;
-    ctx->req.body.buf = malloc(ctx->req.body.expected_len * sizeof(char));
-    ctx->req.body.len = 0;
-  }
-
-  size_t bytes_to_copy = MIN(conn->rbuf_size - conn->rbuf_read,
-                             ctx->req.body.expected_len - ctx->req.body.len);
-  memcpy(&ctx->req.body.buf[ctx->req.body.len], &conn->rbuf[conn->rbuf_read],
-         bytes_to_copy);
-  ctx->req.body.len += bytes_to_copy;
-  conn->rbuf_read += bytes_to_copy;
-
-  return ctx->req.body.len == ctx->req.body.expected_len;
-}
-
-bool http_loop_step_body_to_file(event_loop_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
-
-  if (ctx->req.body.expected_len == 0) {
-    if (!try_parse_content_length(conn)) {
-      return true;
-    }
-
-    ctx->req.body.type = http_body_file;
-    ctx->req.body.file = fopen(ctx->req.body.fname, "wb");
-    ctx->req.body.len = 0;
-  }
-
-  size_t bytes_to_write = MIN(conn->rbuf_size - conn->rbuf_read,
-                              ctx->req.body.expected_len - ctx->req.body.len);
-  size_t bytes_written = fwrite(&conn->rbuf[conn->rbuf_read], sizeof(uint8_t),
-                                bytes_to_write, ctx->req.body.file);
-  ctx->req.body.len += bytes_written;
-  conn->rbuf_read += bytes_written;
-
-  return ctx->req.body.len == ctx->req.body.expected_len;
-}
-
-bool http_loop_step_auth(event_loop_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
-
-  for (size_t i = 0; i < ctx->req.num_headers; i++) {
-    const struct phr_header *header = &ctx->req.headers[i];
-
-    if ((strncmp("X-Api-Key", header->name, header->name_len) == 0) &&
-        (strncmp(header->value, ctx->g->api_key, header->value_len) == 0) &&
-        (strlen(ctx->g->api_key) == header->value_len)) {
-      return true;
-    }
-  }
-
-  ctx->res.status = http_unauthorized;
-  conn->state = event_loop_conn_state_res;
-
-  return true;
-}
-
-bool http_loop_step_switch_res(event_loop_conn *conn) {
-  conn->state = event_loop_conn_state_res;
-
-  return true;
-}

src/lander/lander.c

@@ -1,66 +1,29 @@
 #include <stdio.h>
 #include <string.h>
 
+#include "lnm/common.h"
+#include "lsm/store.h"
+
 #include "http/types.h"
 #include "http_loop.h"
 #include "lander.h"
-#include "lsm/store.h"
 
 const char lander_key_charset[] =
     "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
 
-http_route lander_routes[] = {
-    {.type = http_route_literal,
-     .method = http_get,
-     .path = "/",
-     .steps = {lander_get_index, NULL},
-     .steps_res = {http_loop_step_write_header, http_loop_step_write_body,
-                   NULL}},
-    {
-        .type = http_route_regex,
-        .method = http_get,
-        .path = "^/([^/]+)$",
-        .steps = {lander_get_entry, NULL},
-        .steps_res = {http_loop_step_write_header, lander_stream_body_to_client,
-                      NULL},
-    },
-    {
-        .type = http_route_regex,
-        .method = http_delete,
-        .path = "^/([^/]+)$",
-        .steps = {http_loop_step_auth, lander_remove_entry, NULL},
-        .steps_res = {http_loop_step_write_header, http_loop_step_write_body,
-                      NULL},
-    },
-    {
-        .type = http_route_regex,
-        .method = http_post,
-        .path = "^/s(l?)/([^/]*)$",
-        .steps = {http_loop_step_auth, lander_post_redirect,
-                  http_loop_step_body_to_buf, lander_post_redirect_body_to_attr,
-                  NULL},
-        .steps_res = {http_loop_step_write_header, http_loop_step_write_body,
-                      NULL},
-    },
-    {.type = http_route_regex,
-     .method = http_post,
-     .path = "^/p(l?)/([^/]*)$",
-     .steps = {http_loop_step_auth, http_loop_step_parse_content_length,
-               lander_post_paste, lander_stream_body_to_entry, NULL},
-     .steps_res = {http_loop_step_write_header, http_loop_step_write_body,
-                   NULL}},
-    {.type = http_route_regex,
-     .method = http_post,
-     .path = "^/f(l?)/([^/]*)$",
-     .steps = {http_loop_step_auth, http_loop_step_parse_content_length,
-               lander_post_file, lander_stream_body_to_entry, NULL},
-     .steps_res = {http_loop_step_write_header, http_loop_step_write_body,
-                   NULL}},
-};
-
 void *lander_gctx_init() { return calloc(1, sizeof(lander_gctx)); }
 
-void *lander_ctx_init() { return calloc(1, sizeof(lander_ctx)); }
+lnm_err lander_ctx_init(void **c_ctx, void *gctx) {
+  lander_ctx *ctx = calloc(1, sizeof(lander_ctx));
+
+  if (ctx == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  *c_ctx = ctx;
+
+  return lnm_err_ok;
+}
 
 void lander_ctx_reset(lander_ctx *ctx) {
   if (ctx->entry != NULL) {
@@ -72,36 +35,30 @@ void lander_ctx_reset(lander_ctx *ctx) {
 
 void lander_ctx_free(lander_ctx *ctx) { free(ctx); }
 
-void lander_header_to_attr(http_loop_ctx *ctx, const char *header_name,
+void lander_header_to_attr(lnm_http_loop_ctx *ctx, const char *header_name,
                            lander_attr_type attr_type) {
   lander_ctx *c_ctx = ctx->c;
 
-  for (size_t i = 0; i < ctx->req.num_headers; i++) {
+  const char *header_value;
-    const struct phr_header *header = &ctx->req.headers[i];
+  size_t header_value_len;
 
-    if (strncmp(header->name, header_name, header->name_len) == 0) {
+  if (lnm_http_req_header_get_s(&header_value, &header_value_len, &ctx->req,
-      if (header->value_len > 0) {
+                                header_name) == lnm_err_ok) {
     lsm_str *value;
-        lsm_str_init_copy_n(&value, (char *)header->value, header->value_len);
+    lsm_str_init_copy_n(&value, (char *)header_value, header_value_len);
 
     lsm_entry_attr_insert(c_ctx->entry, attr_type, value);
   }
-
-      return;
-    }
-  }
 }
 
-void lander_attr_to_header(http_loop_ctx *ctx, lander_attr_type attr_type,
+void lander_attr_to_header(lnm_http_loop_ctx *ctx, lander_attr_type attr_type,
-                           http_header header_type) {
+                           lnm_http_header header_type) {
   lander_ctx *c_ctx = ctx->c;
   lsm_str *value;
 
   if (lsm_entry_attr_get(&value, c_ctx->entry, attr_type) == lsm_error_ok) {
-    char *buf = malloc(lsm_str_len(value) + 1);
+    lnm_http_res_add_header_len(&ctx->res, header_type,
-    memcpy(buf, lsm_str_ptr(value), lsm_str_len(value));
+                                (char *)lsm_str_ptr(value), lsm_str_len(value),
-    buf[lsm_str_len(value)] = '\0';
+                                false);
-
-    http_res_add_header(&ctx->res, header_type, buf, true);
   }
 }

src/lander/lander_delete.c

@@ -1,29 +1,30 @@
+#include "lnm/loop.h"
+
 #include "lander.h"
 
-bool lander_remove_entry(event_loop_conn *conn) {
+lnm_http_step_err lander_remove_entry(lnm_http_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_ctx *ctx = conn->ctx;
   lander_ctx *c_ctx = ctx->c;
-  http_loop_gctx *gctx = ctx->g;
+  lnm_http_loop_gctx *gctx = ctx->g;
   lander_gctx *c_gctx = gctx->c;
 
-  const char *key_s = &ctx->req.path[ctx->req.regex_groups[1].rm_so];
+  const char *key_s = &ctx->req.path.s[ctx->req.path.groups[1].rm_so];
-  int key_len = ctx->req.regex_groups[1].rm_eo - ctx->req.regex_groups[1].rm_so;
+  int key_len = ctx->req.path.groups[1].rm_eo - ctx->req.path.groups[1].rm_so;
 
   lsm_str *key;
   lsm_str_init_copy_n(&key, (char *)key_s, key_len);
 
   switch (lsm_store_open_write(&c_ctx->entry, c_gctx->store, key)) {
   case lsm_error_ok:
+    lsm_entry_remove(c_ctx->entry);
     break;
   case lsm_error_not_found:
-    ctx->res.status = http_not_found;
+    ctx->res.status = lnm_http_status_not_found;
-    return true;
+    break;
   default:
-    ctx->res.status = http_internal_server_error;
+    ctx->res.status = lnm_http_status_internal_server_error;
-    return true;
+    break;
   }
 
-  lsm_entry_remove(c_ctx->entry);
+  return lnm_http_step_err_done;
-
-  return true;
 }

src/lander/lander_get.c

@@ -1,5 +1,9 @@
 #include <stdio.h>
 
+#include "lnm/http/consts.h"
+#include "lnm/http/loop.h"
+#include "lnm/loop.h"
+
 #include "event_loop.h"
 #include "http/res.h"
 #include "http/types.h"
@@ -17,18 +21,19 @@ static const char index_page[] =
     "  </body>\n"
     "</html>\n";
 
-bool lander_get_index(event_loop_conn *conn) {
+lnm_http_step_err lander_get_index(lnm_http_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_ctx *ctx = conn->ctx;
 
-  http_res_set_body_buf(&ctx->res, index_page, sizeof(index_page) - 1, false);
+  lnm_http_res_body_set_buf(&ctx->res, (char *)index_page,
-  http_res_set_mime_type(&ctx->res, http_mime_html);
+                            sizeof(index_page) - 1, false);
+  lnm_http_res_add_header(&ctx->res, lnm_http_header_content_type, "text/html",
+                          false);
 
-  conn->state = event_loop_conn_state_res;
+  return lnm_http_step_err_done;
-  return true;
 }
 
-void lander_get_redirect(event_loop_conn *conn) {
+lnm_http_step_err lander_get_redirect(lnm_http_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_ctx *ctx = conn->ctx;
   lander_ctx *c_ctx = ctx->c;
 
   // For redirects, the URL is stored as an in-memory attribute
@@ -39,43 +44,55 @@ void lander_get_redirect(event_loop_conn *conn) {
       lsm_error_ok) {
     error("Entry of type redirect detected without URL attribute");
 
-    ctx->res.status = http_internal_server_error;
+    ctx->res.status = lnm_http_status_internal_server_error;
     lsm_entry_close(c_ctx->entry);
     c_ctx->entry = NULL;
 
-    return;
+    return lnm_http_step_err_res;
   }
 
-  char *buf = malloc(lsm_str_len(url_attr_val) + 1);
+  lnm_http_res_add_header_len(&ctx->res, lnm_http_header_location,
-  memcpy(buf, lsm_str_ptr(url_attr_val), lsm_str_len(url_attr_val));
+                              (char *)lsm_str_ptr(url_attr_val),
+                              lsm_str_len(url_attr_val), false);
 
-  buf[lsm_str_len(url_attr_val)] = '\0';
+  ctx->res.status = lnm_http_status_moved_permanently;
 
-  ctx->res.status = http_moved_permanently;
+  return lnm_http_step_err_done;
-  http_res_add_header(&ctx->res, http_header_location, buf, true);
-
-  // We no longer need the entry at this point, so we can unlock it early
-  // This will also signal to the response code not to read any data from
-  // the entry
-  lsm_entry_close(c_ctx->entry);
-  c_ctx->entry = NULL;
 }
 
-void lander_get_paste(event_loop_conn *conn) {
+lnm_err lander_entry_data_streamer(uint64_t *written, char *buf,
-  http_loop_ctx *ctx = conn->ctx;
+                                   lnm_http_conn *conn, uint64_t offset,
+                                   uint64_t len) {
+  // TODO respect offset variable
+
+  lnm_http_loop_ctx *ctx = conn->ctx;
   lander_ctx *c_ctx = ctx->c;
 
-  ctx->res.body.expected_len = lsm_entry_data_len(c_ctx->entry);
+  lsm_entry_data_read(written, buf, c_ctx->entry, len);
-  http_res_set_mime_type(&ctx->res, http_mime_txt);
+
+  return lnm_err_ok;
 }
 
-void lander_get_file(event_loop_conn *conn) {
+lnm_http_step_err lander_get_paste(lnm_http_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_ctx *ctx = conn->ctx;
   lander_ctx *c_ctx = ctx->c;
 
-  ctx->res.body.expected_len = lsm_entry_data_len(c_ctx->entry);
+  lnm_http_res_body_set_fn(&ctx->res, lander_entry_data_streamer,
+                           lsm_entry_data_len(c_ctx->entry));
+  lnm_http_res_add_header(&ctx->res, lnm_http_header_content_type, "text/plain",
+                          false);
+
+  return lnm_http_step_err_done;
+}
+
+lnm_http_step_err lander_get_file(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+  lander_ctx *c_ctx = ctx->c;
+
+  lnm_http_res_body_set_fn(&ctx->res, lander_entry_data_streamer,
+                           lsm_entry_data_len(c_ctx->entry));
   lander_attr_to_header(ctx, lander_attr_type_content_type,
-                        http_header_content_type);
+                        lnm_http_header_content_type);
 
   lsm_str *value;
   char *buf;
@@ -84,23 +101,26 @@ void lander_get_file(event_loop_conn *conn) {
       lsm_error_ok) {
     buf = malloc(24 + lsm_str_len(value));
     int len = lsm_str_len(value);
-    sprintf(buf, "attachment; filename=\"%*s\"", len, lsm_str_ptr(value));
+    sprintf(buf, "attachment; filename=\"%.*s\"", len, lsm_str_ptr(value));
   } else {
     buf = malloc(11);
     strcpy(buf, "attachment");
   }
 
-  http_res_add_header(&ctx->res, http_header_content_disposition, buf, true);
+  lnm_http_res_add_header(&ctx->res, lnm_http_header_content_disposition, buf,
+                          true);
+
+  return lnm_http_step_err_done;
 }
 
-bool lander_get_entry(event_loop_conn *conn) {
+lnm_http_step_err lander_get_entry(lnm_http_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_ctx *ctx = conn->ctx;
   lander_ctx *c_ctx = ctx->c;
-  http_loop_gctx *gctx = ctx->g;
+  lnm_http_loop_gctx *gctx = ctx->g;
   lander_gctx *c_gctx = gctx->c;
 
-  const char *key_s = &ctx->req.path[ctx->req.regex_groups[1].rm_so];
+  const char *key_s = &ctx->req.path.s[ctx->req.path.groups[1].rm_so];
-  int key_len = ctx->req.regex_groups[1].rm_eo - ctx->req.regex_groups[1].rm_so;
+  int key_len = ctx->req.path.groups[1].rm_eo - ctx->req.path.groups[1].rm_so;
 
   lsm_str *key;
   lsm_str_init_copy_n(&key, (char *)key_s, key_len);
@@ -109,32 +129,32 @@ bool lander_get_entry(event_loop_conn *conn) {
   case lsm_error_ok:
     break;
   case lsm_error_not_found:
-    ctx->res.status = http_not_found;
+    ctx->res.status = lnm_http_status_not_found;
-    conn->state = event_loop_conn_state_res;
+    return lnm_http_step_err_res;
-    return true;
   default:
-    ctx->res.status = http_internal_server_error;
+    ctx->res.status = lnm_http_status_internal_server_error;
-    conn->state = event_loop_conn_state_res;
+    return lnm_http_step_err_res;
-    return true;
   }
 
   lander_entry_type t;
   lsm_entry_attr_get_uint8_t((uint8_t *)&t, c_ctx->entry,
                              lander_attr_type_entry_type);
 
+  lnm_http_step_err res;
+
   switch (t) {
   case lander_entry_type_redirect:
-    lander_get_redirect(conn);
+    res = lander_get_redirect(conn);
     break;
   case lander_entry_type_paste:
-    lander_get_paste(conn);
+    res = lander_get_paste(conn);
     break;
   case lander_entry_type_file:
-    lander_get_file(conn);
+    res = lander_get_file(conn);
     break;
   }
 
-  return true;
+  return res;
 }
 
 bool lander_stream_body_to_client(event_loop_conn *conn) {

src/lander/lander_post.c

@@ -1,6 +1,7 @@
 #include "http/res.h"
 #include "http/types.h"
 #include "lander.h"
+#include "lnm/loop.h"
 #include "log.h"
 #include "lsm/store.h"
 
@@ -19,26 +20,26 @@ static void randomize_key(char *key, int len) {
  *
  * @return true on success, false otherwise
  */
-bool lander_insert_entry(http_loop_ctx *ctx) {
+bool lander_insert_entry(lnm_http_loop_ctx *ctx) {
-  http_loop_gctx *gctx = ctx->g;
+  lnm_http_loop_gctx *gctx = ctx->g;
   lander_gctx *c_gctx = gctx->c;
   lander_ctx *c_ctx = ctx->c;
 
   lsm_str *key;
   int key_len;
 
-  if (ctx->req.regex_groups[2].rm_eo == ctx->req.regex_groups[2].rm_so) {
+  if (ctx->req.path.groups[2].rm_eo == ctx->req.path.groups[2].rm_so) {
     // Generate a random key to insert
     bool secure =
-        (ctx->req.regex_groups[1].rm_eo - ctx->req.regex_groups[1].rm_so) == 1;
+        (ctx->req.path.groups[1].rm_eo - ctx->req.path.groups[1].rm_so) == 1;
     key_len = secure ? 16 : 4;
     char *key_s = malloc((key_len + 1) * sizeof(char));
 
     randomize_key(key_s, key_len);
     lsm_str_init(&key, key_s);
   } else {
-    const char *key_s = &ctx->req.path[ctx->req.regex_groups[2].rm_so];
+    const char *key_s = &ctx->req.path.s[ctx->req.path.groups[2].rm_so];
-    key_len = ctx->req.regex_groups[2].rm_eo - ctx->req.regex_groups[2].rm_so;
+    key_len = ctx->req.path.groups[2].rm_eo - ctx->req.path.groups[2].rm_so;
 
     lsm_str_init_copy_n(&key, key_s, key_len);
   }
@@ -46,12 +47,12 @@ bool lander_insert_entry(http_loop_ctx *ctx) {
   // TODO free key on error
   switch (lsm_store_insert(&c_ctx->entry, c_gctx->store, key)) {
   case lsm_error_already_present:
-    ctx->res.status = http_conflict;
+    ctx->res.status = lnm_http_status_conflict;
     return false;
   case lsm_error_ok:
     break;
   default:
-    ctx->res.status = http_internal_server_error;
+    ctx->res.status = lnm_http_status_internal_server_error;
     return false;
   }
 
@@ -61,61 +62,58 @@ bool lander_insert_entry(http_loop_ctx *ctx) {
   buf[0] = '/';
   buf[key_len + 1] = '\0';
 
-  http_res_add_header(&ctx->res, http_header_location, buf, true);
+  lnm_http_res_add_header(&ctx->res, lnm_http_header_location, buf, true);
-  ctx->res.status = http_created;
+  ctx->res.status = lnm_http_status_created;
 
   return true;
 }
 
-bool lander_post_redirect(event_loop_conn *conn) {
+lnm_http_step_err lander_post_redirect(lnm_http_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_ctx *ctx = conn->ctx;
   lander_ctx *c_ctx = ctx->c;
 
   if (!lander_insert_entry(ctx)) {
-    conn->state = event_loop_conn_state_res;
+    return lnm_http_step_err_res;
-    return true;
   }
 
   lsm_entry_attr_insert_uint8_t(c_ctx->entry, lander_attr_type_entry_type,
                                 lander_entry_type_redirect);
 
-  return true;
+  return lnm_http_step_err_done;
 }
 
-bool lander_post_redirect_body_to_attr(event_loop_conn *conn) {
+lnm_http_step_err lander_post_redirect_body_to_attr(lnm_http_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_ctx *ctx = conn->ctx;
   lander_ctx *c_ctx = ctx->c;
 
   lsm_str *attr_value;
   lsm_str_init_copy_n(&attr_value, ctx->req.body.buf, ctx->req.body.len);
   lsm_entry_attr_insert(c_ctx->entry, lander_attr_type_url, attr_value);
 
-  return true;
+  return lnm_http_step_err_done;
 }
 
-bool lander_post_paste(event_loop_conn *conn) {
+lnm_http_step_err lander_post_paste(lnm_http_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_ctx *ctx = conn->ctx;
   lander_ctx *c_ctx = ctx->c;
 
   if (!lander_insert_entry(ctx)) {
-    conn->state = event_loop_conn_state_res;
+    return lnm_http_step_err_res;
-    return true;
   }
 
   lsm_entry_attr_insert_uint8_t(c_ctx->entry, lander_attr_type_entry_type,
                                 lander_entry_type_paste);
   lander_header_to_attr(ctx, "X-Lander-Filename", lander_attr_type_file_name);
 
-  return true;
+  return lnm_http_step_err_done;
 }
 
-bool lander_post_file(event_loop_conn *conn) {
+lnm_http_step_err lander_post_file(lnm_http_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_ctx *ctx = conn->ctx;
   lander_ctx *c_ctx = ctx->c;
 
   if (!lander_insert_entry(ctx)) {
-    conn->state = event_loop_conn_state_res;
+    return lnm_http_step_err_res;
-    return true;
   }
 
   lsm_entry_attr_insert_uint8_t(c_ctx->entry, lander_attr_type_entry_type,
@@ -124,5 +122,5 @@ bool lander_post_file(event_loop_conn *conn) {
                         lander_attr_type_content_type);
   lander_header_to_attr(ctx, "X-Lander-Filename", lander_attr_type_file_name);
 
-  return true;
+  return lnm_http_step_err_done;
 }

src/lander/lander_steps.c

@@ -1,22 +1,26 @@
 #include <string.h>
 
 #include "lander.h"
+#include "lnm/http/loop.h"
+#include "lnm/loop.h"
 
-bool lander_stream_body_to_entry(event_loop_conn *conn) {
+lnm_http_step_err lander_stream_body_to_entry(lnm_http_conn *conn) {
-  http_loop_ctx *ctx = conn->ctx;
+  lnm_http_loop_ctx *ctx = conn->ctx;
   lander_ctx *c_ctx = ctx->c;
 
   uint64_t to_append =
-      MIN(conn->rbuf_size - conn->rbuf_read,
+      MIN(conn->r.size - conn->r.read,
           ctx->req.body.expected_len - lsm_entry_data_len(c_ctx->entry));
 
   lsm_str *data;
-  lsm_str_init_copy_n(&data, (char *)&conn->rbuf[conn->rbuf_read], to_append);
+  lsm_str_init_copy_n(&data, (char *)&conn->r.buf[conn->r.read], to_append);
   lsm_entry_data_append(c_ctx->entry, data);
 
-  conn->rbuf_read += to_append;
+  conn->r.read += to_append;
 
   lsm_str_free(data);
 
-  return lsm_entry_data_len(c_ctx->entry) == ctx->req.body.expected_len;
+  return lsm_entry_data_len(c_ctx->entry) == ctx->req.body.expected_len
+             ? lnm_http_step_err_done
+             : lnm_http_step_err_io_needed;
 }

src/main.c

@@ -2,9 +2,59 @@
 #include <stdlib.h>
 #include <time.h>
 
+#include "lnm/http/loop.h"
+
 #include "lander.h"
 #include "log.h"
 
+lnm_http_loop *loop_init(lander_gctx *gctx, const char *api_key) {
+  lnm_http_loop *hl;
+  lnm_http_step *step = NULL;
+  lnm_http_route *route;
+  lnm_http_loop_init(&hl, gctx, lander_ctx_init,
+                     (lnm_http_ctx_reset_fn)lander_ctx_reset,
+                     (lnm_http_ctx_free_fn)lander_ctx_free);
+  lnm_http_loop_set_api_key(hl, api_key);
+
+  lnm_http_step_init(&step, lander_get_index);
+  lnm_http_route_init_literal(&route, lnm_http_method_get, "/", step);
+  lnm_http_loop_route_add(hl, route);
+
+  lnm_http_step_init(&step, lander_get_entry);
+  lnm_http_route_init_regex(&route, lnm_http_method_get, "^/([^/]+)$", 1, step);
+  lnm_http_loop_route_add(hl, route);
+
+  lnm_http_step_init(&step, lnm_http_loop_step_auth);
+  lnm_http_route_init_regex(&route, lnm_http_method_post, "^/s(l?)/([^/]*)$", 2,
+                            step);
+  lnm_http_step_append(&step, step, lander_post_redirect);
+  lnm_http_step_append(&step, step, lnm_http_loop_step_body_to_buf);
+  lnm_http_step_append(&step, step, lander_post_redirect_body_to_attr);
+  lnm_http_loop_route_add(hl, route);
+
+  lnm_http_step_init(&step, lnm_http_loop_step_auth);
+  lnm_http_route_init_regex(&route, lnm_http_method_post, "^/p(l?)/([^/]*)$", 2,
+                            step);
+  lnm_http_step_append(&step, step, lander_post_paste);
+  lnm_http_step_append(&step, step, lander_stream_body_to_entry);
+  lnm_http_loop_route_add(hl, route);
+
+  lnm_http_step_init(&step, lnm_http_loop_step_auth);
+  lnm_http_route_init_regex(&route, lnm_http_method_post, "^/f(l?)/([^/]*)$", 2,
+                            step);
+  lnm_http_step_append(&step, step, lander_post_file);
+  lnm_http_step_append(&step, step, lander_stream_body_to_entry);
+  lnm_http_loop_route_add(hl, route);
+
+  lnm_http_step_init(&step, lnm_http_loop_step_auth);
+  lnm_http_route_init_regex(&route, lnm_http_method_delete, "^/([^/]+)$", 1,
+                            step);
+  lnm_http_step_append(&step, step, lander_remove_entry);
+  lnm_http_loop_route_add(hl, route);
+
+  return hl;
+}
+
 #define ENV(var, env_var)                                                      \
   const char *var = getenv(env_var);                                           \
   if (var == NULL) {                                                           \
@@ -44,12 +94,15 @@ int main() {
   }
 
   info("Store loaded containing %lu entries", lsm_store_size(c_gctx->store));
+  lnm_http_loop *hl = loop_init(c_gctx, api_key);
+  lnm_http_loop_run(hl, port);
 
-  http_loop *hl = http_loop_init(
+  /* http_loop *hl = http_loop_init( */
-      lander_routes, sizeof(lander_routes) / sizeof(lander_routes[0]), c_gctx,
+  /*     lander_routes, sizeof(lander_routes) / sizeof(lander_routes[0]),
-      lander_ctx_init, (void (*)(void *))lander_ctx_reset,
+   * c_gctx, */
-      (void (*)(void *))lander_ctx_free);
+  /*     lander_ctx_init, (void (*)(void *))lander_ctx_reset, */
-  http_loop_set_api_key(hl, api_key);
+  /*     (void (*)(void *))lander_ctx_free); */
+  /* http_loop_set_api_key(hl, api_key); */
 
-  http_loop_run(hl, port);
+  /* http_loop_run(hl, port); */
 }