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Author SHA1 Message Date
Jef Roosens 675c9b78ff
chore: update version to 0.2.1
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2024-03-09 20:45:34 +01:00
Jef Roosens 8aad8b2d0f
chore: update changelog and lnm commit
ci/woodpecker/push/docker Pipeline was successful Details
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2024-03-09 20:30:50 +01:00
Jef Roosens ce0abcdc25
chore: updated readme and makefile
ci/woodpecker/push/build Pipeline was successful Details
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2024-03-09 13:29:10 +01:00
Jef Roosens 94da7584aa
refactor(lander): fully integrate new lnm framework router
ci/woodpecker/push/build Pipeline was successful Details
2024-03-03 09:46:20 +01:00
Jef Roosens 44ba4b053e
refactor(lander): partial migration to updated lnm framework 2024-03-02 23:31:34 +01:00
Jef Roosens 7b195c75b0
chore: remove lnm directory 2024-03-02 22:40:57 +01:00
Jef Roosens dc0a3a7349
feat(lander): remove content-disposition header
ci/woodpecker/push/build Pipeline was successful Details
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2024-03-02 12:02:20 +01:00
Jef Roosens e438bd045c
feat(ci): build for arm64
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2023-12-30 17:01:23 +01:00
Jef Roosens 8bdf52da0d
feat(lnm): move request data to separate buffer if read buffer changes
ci/woodpecker/push/build Pipeline was successful Details
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2023-12-22 20:06:06 +01:00
Jef Roosens d53a949946
feat(lnm): switch to epoll
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2023-12-12 22:22:55 +01:00
Jef Roosens 89cc41f28a
chore(lander): move a log line
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2023-12-12 12:15:21 +01:00
Jef Roosens 8e0477c34b
feat(lander): fully switch to lnm logger
ci/woodpecker/push/build Pipeline was successful Details
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2023-12-11 15:39:31 +01:00
Jef Roosens dde83584a7
feat(lnm): add some internal logging 2023-12-11 15:34:49 +01:00
Jef Roosens 3aa0ace863
feat(lnm): add logging framework 2023-12-11 15:00:34 +01:00
Jef Roosens e44b7d0e5f
fix(lander): remove small mem leak
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2023-12-09 12:48:32 +01:00
Jef Roosens 4ae1355cec
feat(lander): re-add Server header 2023-12-09 12:34:02 +01:00
Jef Roosens cda61f5433
feat(landerctl): add option to use custom config file
ci/woodpecker/push/build Pipeline was successful Details
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2023-12-09 10:37:10 +01:00
Jef Roosens a0954e8d07
fix(lnm): seemingly fix performance regression
ci/woodpecker/push/build Pipeline was successful Details
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2023-12-08 22:03:47 +01:00
Jef Roosens 58a8645c6c
feat(lnm): support HEAD requests
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2023-12-07 12:54:34 +01:00
Jef Roosens cc9dc6aec5
chore: properly compile picohttpparser in lnm; remove old http header
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files
2023-12-07 11:02:20 +01:00
Jef Roosens c59dd29648
chore(lander): removed old networking code
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2023-12-06 23:04:06 +01:00
Jef Roosens 1a7686003c
feat(lander): re-add authentication using LNM
ci/woodpecker/push/build Pipeline was successful Details
2023-12-06 18:16:52 +01:00
Jef Roosens 8dc8ef8e2d
chore(lander): updated changelog
ci/woodpecker/push/build Pipeline was successful Details
2023-12-06 17:43:56 +01:00
Jef Roosens 876e5a7de4
fix(lnm): some small bugs
ci/woodpecker/push/build Pipeline was successful Details
2023-12-05 20:21:28 +01:00
Jef Roosens 8ae59f1031
feat(lander): full initial migration to lnm
ci/woodpecker/push/build Pipeline was successful Details
2023-12-05 19:36:54 +01:00
Jef Roosens f3da5c78ef
feat(lander): implement redirect posting using lnm 2023-12-05 19:12:19 +01:00
Jef Roosens ad243ea9f5
feat(lnm): better routing detection
ci/woodpecker/push/build Pipeline was successful Details
2023-12-04 21:46:10 +01:00
Jef Roosens 8ec667af3b
feat(lander): initial lnm integration test
ci/woodpecker/push/build Pipeline was successful Details
2023-12-02 20:22:05 +01:00
Jef Roosens 799821d9fc
feat(lnm): implement event loop state switching 2023-12-02 16:45:37 +01:00
Jef Roosens 13ccfef94d
feat(lnm): implement content-length header parsing
ci/woodpecker/push/build Pipeline was successful Details
2023-12-02 16:28:52 +01:00
Jef Roosens 3c1e62330c
feat(lnm): implement context resetting 2023-12-02 13:24:22 +01:00
Jef Roosens e8bb089f5c
feat(lnm): add most of the writing code
ci/woodpecker/push/build Pipeline was successful Details
2023-12-01 22:00:49 +01:00
Jef Roosens 77b62825a6
feat(lnm): more request processing code
ci/woodpecker/push/build Pipeline was successful Details
2023-11-30 21:04:13 +01:00
Jef Roosens 8c21ccf58b
feat(lnm): part of routing code
ci/woodpecker/push/build Pipeline was successful Details
2023-11-28 20:54:40 +01:00
Jef Roosens d119f85260
feat(lnm): wrote part of context code
ci/woodpecker/push/build Pipeline was successful Details
2023-11-28 10:32:08 +01:00
Jef Roosens e04f6e170e
feat(lnm): start of processing code
ci/woodpecker/push/build Pipeline was successful Details
2023-11-27 19:54:53 +01:00
Jef Roosens 4c2b85d436
feat(lnm): add request parser
ci/woodpecker/push/build Pipeline was successful Details
2023-11-27 13:50:08 +01:00
Jef Roosens e59ee38ae2
feat(lnm): write server init code 2023-11-24 10:39:22 +01:00
Jef Roosens 3c74200bbd
chore(lnm): add picohttpparser
ci/woodpecker/push/build Pipeline was successful Details
2023-11-22 15:19:21 +01:00
Jef Roosens c7b3f68c2e
chore(lnm): copied over http constants
ci/woodpecker/push/build Pipeline was successful Details
2023-11-22 13:17:46 +01:00
Jef Roosens f79ba2818c
feat(lnm): wrote rest of event loop
ci/woodpecker/push/build Pipeline was successful Details
2023-11-22 12:59:28 +01:00
Jef Roosens 8a3be2b07c
feat(lnm): start of event loop
ci/woodpecker/push/build Pipeline was successful Details
2023-11-21 22:39:59 +01:00
Jef Roosens 20b6b593eb
refactor: started lnm library
ci/woodpecker/push/build Pipeline was successful Details
2023-11-21 09:36:58 +01:00
Jef Roosens 1587b923c1
refactor(http): pass Server & Content-Length as proper headers
ci/woodpecker/push/build Pipeline was successful Details
2023-11-20 22:41:49 +01:00
Jef Roosens 380605ea08
feat(http): allow arbitrary number of response headers
ci/woodpecker/push/build Pipeline was successful Details
2023-11-20 22:25:58 +01:00
35 changed files with 394 additions and 2865 deletions

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@ -2,14 +2,15 @@
!src/
!include/
!Makefile
!config.mk
!lsm/src/
!lsm/include/
!lsm/Makefile
!lsm/config.mk
!thirdparty/include
!thirdparty/src
!Makefile
!config.mk
!lnm/src/
!lnm/include/
!lnm/Makefile
!lnm/config.mk

3
.gitmodules vendored 100644
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@ -0,0 +1,3 @@
[submodule "lnm"]
path = lnm
url = https://git.rustybever.be/Chewing_Bever/lnm

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@ -1,6 +1,7 @@
matrix:
PLATFORM:
- 'linux/amd64'
- 'linux/arm64'
platform: ${PLATFORM}
@ -34,13 +35,13 @@ pipeline:
commands:
- apk add --no-cache minio-client
- mcli alias set rb 'https://s3.rustybever.be' "$MINIO_ACCESS_KEY" "$MINIO_SECRET_KEY"
- mcli cp build/lander landerctl/build/landerctl "rb/lander/commits/$CI_COMMIT_SHA/"
- mcli cp build/lander "rb/lander/commits/$CI_COMMIT_SHA/lander-$(echo '${PLATFORM}' | sed 's:/:-:g')"
- mcli cp landerctl/build/landerctl "rb/lander/commits/$CI_COMMIT_SHA/landerctl-$(echo '${PLATFORM}' | sed 's:/:-:g')"
secrets:
- minio_access_key
- minio_secret_key
when:
branch:
exclude: [ release/* ]
branch: dev
event: push
publish-rel:

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@ -7,6 +7,31 @@ 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)
## [0.2.1](https://git.rustybever.be/Chewing_Bever/lander/src/tag/0.2.1)
### Added
* LNM - Lander Network Module
* Rewrite of the event loop & HTTP loop
* Fully independent library, maintained in its own repository
* Numerous improvements
* Streaming of headers
* Allow custom & an arbitrary number of response headers
* Better API for adding routes
* State machine HTTP loop
* Automatically support HEAD requests for all GET requests
* Event loop uses `epoll` instead of `poll`
* Configurable multithreading using `epoll`
* Trie-based router (no more RegEx)
* Landerctl
* `-c` flag to use custom config file (useful for testing)
## Removed
* Content-Disposition header for files
* Secure routes with a specified key (e.g. `/sl/:key`), as these were identical
to `/s/:key` routes
## [0.2.0](https://git.rustybever.be/Chewing_Bever/lander/src/tag/0.2.0)
### Added

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@ -10,14 +10,13 @@ BIN := $(BUILD_DIR)/$(BIN_FILENAME)
SRCS != find '$(SRC_DIR)' -iname '*.c'
SRCS_TEST != find '$(TEST_DIR)' -iname '*.c'
SRCS_THIRDPARTY != find '$(THIRDPARTY_DIR)/src' -iname '*.c'
SRCS_H != find include -iname '*.h'
SRCS_H_INTERNAL != find $(SRC_DIR) -iname '*.h'
OBJS := $(SRCS:%=$(BUILD_DIR)/%.o) $(SRCS_THIRDPARTY:%=$(BUILD_DIR)/%.o)
OBJS := $(SRCS:%=$(BUILD_DIR)/%.o)
OBJS_TEST := $(SRCS_TEST:%=$(BUILD_DIR)/%.o)
DEPS := $(SRCS:%=$(BUILD_DIR)/%.d) $(SRCS_THIRDPARTY:%=$(BUILD_DIR)/%.d) $(SRCS_TEST:%=$(BUILD_DIR)/%.d)
DEPS := $(SRCS:%=$(BUILD_DIR)/%.d) $(SRCS_TEST:%=$(BUILD_DIR)/%.d)
BINS_TEST := $(OBJS_TEST:%.c.o=%)
TARGETS_TEST := $(BINS_TEST:%=test-%)
@ -39,17 +38,17 @@ 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
mkdir -p $(dir $@)
$(CC) $(_CFLAGS) -c $< -o $@
$(BUILD_DIR)/$(THIRDPARTY_DIR)/%.c.o: $(THIRDPARTY_DIR)/%.c
mkdir -p $(dir $@)
$(CC) $(_CFLAGS) -c $< -o $@
.PHONY: bin-docker
bin-docker:
docker build -t lander .
@ -68,7 +67,7 @@ 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)
@ -135,6 +134,7 @@ check:
clean:
rm -rf $(BUILD_DIR)
$(MAKE) -C lsm clean
$(MAKE) -C lnm clean
$(MAKE) -C landerctl clean
.PHONY: bear

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@ -1,4 +1,4 @@
VERSION := 0.2.0
VERSION := 0.2.1
BIN_FILENAME = lander
@ -7,9 +7,9 @@ SRC_DIR = src
TEST_DIR = test
THIRDPARTY_DIR = thirdparty
INC_DIRS = include $(THIRDPARTY_DIR)/include lsm/include
LIBS = m lsm
LIB_DIRS = ./lsm/build
INC_DIRS = include $(THIRDPARTY_DIR)/include lsm/include lnm/include
LIBS = lsm lnm
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

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@ -1,137 +0,0 @@
#ifndef LANDER_EVENT_LOOP
#define LANDER_EVENT_LOOP
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
// Size of the read and write buffers for each connection, in bytes
#define EVENT_LOOP_BUFFER_SIZE 2048
/**
* State of a connection
*/
typedef enum {
event_loop_conn_state_req = 0,
event_loop_conn_state_res = 1,
event_loop_conn_state_end = 2,
} event_loop_conn_state;
/**
* Represents an active connection managed by the event loop
*/
typedef struct event_loop_conn {
int fd;
event_loop_conn_state state;
// Read buffer
size_t rbuf_size;
size_t rbuf_read;
uint8_t rbuf[EVENT_LOOP_BUFFER_SIZE];
// Write buffer
size_t wbuf_size;
size_t wbuf_sent;
uint8_t wbuf[EVENT_LOOP_BUFFER_SIZE];
// If true, the server will close the connection after the final write buffer
// has been written
bool close_after_write;
// Context for a request
void *ctx;
} event_loop_conn;
/*
* Main struct object representing the event loop
*/
typedef struct event_loop {
event_loop_conn **connections;
size_t connection_count;
// Global context passed to every connection
void *gctx;
/**
* Function to initialize a connection context.
*
* @param gctx global context of the event loop
* @return pointer to the allocated object.
*/
void *(*ctx_init)(void *gctx);
/**
* Function to free a connection context object.
*
* @param ctx context to free
*/
void (*ctx_free)(void *ctx);
/**
* Function to process incoming data while in the req state.
*
* @param conn connection to process
* @return whether the function can be called again immediately in the same
* event loop cycle. This allows quicly processing multiple requests without
* waiting for I/O.
*/
bool (*handle_data)(event_loop_conn *conn);
/**
* Function to process outgoing data while in the res state.
*
* @param conn connection to proces
*/
void (*write_data)(event_loop_conn *conn);
} event_loop;
/*
* Initialize a new connection struct
*
* @param el the event loop
* @return pointer to the newly allocated connection struct
*/
event_loop_conn *event_loop_conn_init(event_loop *el);
/*
* Free a connection struct
*
* @param el the event loop
* @param conn connection struct to free
*/
void event_loop_conn_free(event_loop *el, event_loop_conn *conn);
/*
* Handle I/O for a connection, be it reading input or writing output.
*
* @param el the event loop
* @param conn the connection to process
*/
void event_loop_conn_io(event_loop *el, event_loop_conn *conn);
/*
* Initialize a new event loop struct
*
* @return pointer to the newly allocated event loop struct
*/
event_loop *event_loop_init();
/*
* Place a new connection into the event loop's internal array.
*
* @param el the event loop
* @param conn connection to insert
* @return 0 on success, -1 if the internal realloc failed.
*/
int event_loop_put(event_loop *el, event_loop_conn *conn);
/**
* Accept a new connection for the given file descriptor.
*
* @param el the event loop
* @param fd file descriptor for the connection
* @return 0 if successful, negative value otherwise
*/
int event_loop_accept(event_loop *el, int fd);
/*
* Run the event loop. This function never returns.
*
* @param el the event loop
* @param port on what port to listen
*/
void event_loop_run(event_loop *el, int port);
#endif

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@ -1,42 +0,0 @@
#ifndef LANDER_HTTP_REQ
#define LANDER_HTTP_REQ
#include <regex.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include "http/types.h"
#include "picohttpparser.h"
#define HTTP_MAX_ALLOWED_HEADERS 32
#define HTTP_MAX_REGEX_GROUPS 4
/**
* Struct representing the specific type of request
*/
typedef struct http_request {
size_t len;
int minor_version;
http_method method;
const char *path;
size_t path_len;
const char *query;
size_t query_len;
http_body body;
regmatch_t regex_groups[HTTP_MAX_REGEX_GROUPS];
struct phr_header headers[HTTP_MAX_ALLOWED_HEADERS];
size_t num_headers;
} http_request;
/**
* Result of the HTTP parse function
*/
typedef enum http_parse_error {
http_parse_error_ok = 0,
http_parse_error_incomplete = 1,
http_parse_error_invalid = 2,
http_parse_error_unknown_method = 3
} http_parse_error;
#endif

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@ -1,69 +0,0 @@
#ifndef LANDER_HTTP_RES
#define LANDER_HTTP_RES
#include <stdbool.h>
#include <stdio.h>
#include "http/types.h"
/**
* Struct describing a header for the response.
*/
typedef struct http_response_header {
http_header type;
const char *value;
bool owned;
} http_response_header;
/**
* Struct representing an HTTP response.
*/
typedef struct http_response {
http_status status;
const char *head;
size_t head_len;
size_t head_written;
http_body body;
http_response_header headers[4];
size_t header_count;
} http_response;
/**
* Set the request body to the given buffer.
*
* @param res response to modify
* @param body pointer to the buf containing the body
* @param body_len length of the body
* @owned whether the body should be freed after processing the request
*/
void http_res_set_body_buf(http_response *res, const char *body,
size_t body_len, bool owned);
/**
* Set the request body to the given filename.
*
* @param res response to modify
* @param filename path to the file to return
*/
void http_res_set_body_file(http_response *res, const char *filename);
/**
* Add a header to the response.
*
* @param res response to modify
* @param type type of the header
* @param value value of the header
* @param owned whether the value should be freed after processing the request
*/
void http_res_add_header(http_response *res, http_header type,
const char *value, bool owned);
/**
* Add a Content-Type header corresponding to the mime type.
*
* @param res response to modiy
* @param mime_type mime type of the response
*/
void http_res_set_mime_type(http_response *res, http_mime_type mime_type);
#endif

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@ -1,173 +0,0 @@
#ifndef LANDER_HTTP_TYPES
#define LANDER_HTTP_TYPES
#include <stdbool.h>
#include <stdio.h>
#include <sys/types.h>
// Array mapping the http_request_method enum to strings
extern const char *http_method_names[];
extern const size_t http_method_names_len;
typedef enum http_method {
http_get = 0,
http_post = 1,
http_put = 2,
http_patch = 3,
http_delete = 4
} http_method;
// Array mapping the http_response_type enum to strings
extern const char *http_status_names[][32];
typedef enum http_status {
// 1xx
http_continue = 100,
http_switching_protocols = 101,
http_processing = 102,
http_early_hints = 103,
// 2xx
http_ok = 200,
http_created = 201,
http_accepted = 202,
http_non_authoritative_information = 203,
http_no_content = 204,
http_reset_content = 205,
http_partial_content = 206,
http_multi_status = 207,
http_already_reported = 208,
// 3xx
http_multiple_choices = 300,
http_moved_permanently = 301,
http_found = 302,
http_see_other = 303,
http_not_modified = 304,
http_temporary_redirect = 307,
http_permanent_redirect = 308,
// 4xx
http_bad_request = 400,
http_unauthorized = 401,
http_payment_required = 402,
http_forbidden = 403,
http_not_found = 404,
http_method_not_allowed = 405,
http_not_acceptable = 406,
http_proxy_authentication_required = 407,
http_request_timeout = 408,
http_conflict = 409,
http_gone = 410,
http_length_required = 411,
http_precondition_failed = 412,
http_content_too_large = 413,
http_uri_too_long = 414,
http_unsupported_media_type = 415,
http_range_not_satisfiable = 416,
http_expection_failed = 417,
http_im_a_teapot = 418,
http_misdirected_request = 421,
http_unprocessable_content = 422,
http_locked = 423,
http_failed_dependency = 424,
http_too_early = 425,
http_upgrade_required = 426,
http_precondition_required = 428,
http_too_many_requests = 429,
http_request_header_fields_too_large = 431,
// 5xx
http_internal_server_error = 500,
http_method_not_implemented = 501,
http_bad_gateway = 502,
http_service_unavailable = 503,
http_gateway_timeout = 504,
http_http_version_not_supported = 505,
http_variant_also_negotiates = 506,
http_insufficient_storage = 507,
http_loop_detected = 508,
http_not_extended = 510,
http_network_authentication_required = 511
} http_status;
// Array mapping the http_mime_type enum to strings
extern const char *http_mime_type_names[][2];
typedef enum http_mime_type {
http_mime_aac = 0,
http_mime_bz,
http_mime_bz2,
http_mime_css,
http_mime_csv,
http_mime_gz,
http_mime_gif,
http_mime_htm,
http_mime_html,
http_mime_jar,
http_mime_jpeg,
http_mime_jpg,
http_mime_js,
http_mime_json,
http_mime_mp3,
http_mime_mp4,
http_mime_png,
http_mime_pdf,
http_mime_rar,
http_mime_sh,
http_mime_svg,
http_mime_tar,
http_mime_txt,
http_mime_wav,
http_mime_7z
} http_mime_type;
// Array mapping the http_header enum to strings
extern const char *http_header_names[];
typedef enum http_header {
http_header_connection = 0,
http_header_location,
http_header_content_type,
http_header_content_disposition
} http_header;
typedef enum http_body_type {
http_body_buf = 0,
http_body_file = 1
} http_body_type;
typedef struct http_body {
http_body_type type;
char *buf;
bool buf_owned;
FILE *file;
char *fname;
bool fname_owned;
// In the context of a request, expected_len is the content of the request's
// Content-Length header, and len is how many bytes have already been
// received.
// In the context of a response, expected_len is the actual length of the
// body, and len is how many have been written.
size_t expected_len;
size_t len;
} http_body;
/**
* Initialize a new body struct.
*
* @return pointer to the newly allocated object.
*/
http_body *http_body_init();
/**
* Reset a body, allowing it to be reused as if newly allocated.
*
* @param body body to reset
*/
void http_body_reset(http_body *body);
/**
* Free a body. Internally, this calls http_body_reset.
*
* @param body body to free
*/
void http_body_free(http_body *body);
#endif

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@ -1,241 +0,0 @@
#ifndef LANDER_HTTP_LOOP
#define LANDER_HTTP_LOOP
#include <regex.h>
#include "event_loop.h"
#include "http/req.h"
#include "http/res.h"
#include "http/types.h"
// Max amount of steps a route can use
#define HTTP_LOOP_MAX_STEPS 17
#define MIN(x, y) (((x) < (y)) ? (x) : (y))
#define MAX(x, y) (((x) > (y)) ? (x) : (y))
/**
* Type of a route
*/
typedef enum http_route_type {
http_route_literal = 0,
http_route_regex = 1,
} http_route_type;
/**
* Function describing a step in a route's processing.
*
* @param conn connection to process
* @return whether processing can proceed to the next step without performing
* I/O first. For a request step, `false` means more data needs to be read
* before the step can finish its processing. For response steps, `false` means
* there's new data in the write buffer that needs to be written.
*/
typedef bool (*http_step)(event_loop_conn *conn);
extern const http_step http_default_res_steps[HTTP_LOOP_MAX_STEPS];
/**
* Struct describing a route a request can take.
*/
typedef struct http_route {
http_route_type type;
http_method method;
char *path;
// Compiled regex for a regex route. This value gets set at runtime when
// starting the http loop
regex_t *regex;
const http_step steps[HTTP_LOOP_MAX_STEPS];
const http_step steps_res[HTTP_LOOP_MAX_STEPS];
} http_route;
/**
* Global context passed to every connection using the same pointer
*/
typedef struct http_loop_gctx {
http_route *routes;
size_t route_count;
void *(*custom_ctx_init)();
void (*custom_ctx_reset)(void *);
void (*custom_ctx_free)(void *);
const char *api_key;
// Custom global context
void *c;
} http_loop_gctx;
/**
* Initialize a new global context
*
* @return pointer to the newly allocated object.
*/
http_loop_gctx *http_loop_gctx_init();
/**
* Invidivual context initialized for every connection
*/
typedef struct http_loop_ctx {
http_request req;
http_response res;
http_route *route;
size_t current_step;
http_loop_gctx *g;
void *c;
} http_loop_ctx;
/**
* Initialize a context struct
*
* @param g global context
* @return pointer to the newly allocated context
*/
http_loop_ctx *http_loop_ctx_init(http_loop_gctx *g);
/**
* Resets an already allocated context so that it can be reused for a new
* request.
*
* @param ctx context to reset
*/
void http_loop_ctx_reset(http_loop_ctx *ctx);
/**
* Free a context struct. Internally this first calls http_loop_ctx_reset.
*
* @param ctx context to free
*/
void http_loop_ctx_free(http_loop_ctx *ctx);
/**
* Represents an HTTP loop
*/
typedef struct event_loop http_loop;
/**
* Process incoming data as an HTTP request. This is the "handle_data" function
* for the event loop.
*
* @param conn connection to process
* @return whether another request can be processed immediately.
*/
bool http_loop_handle_request(event_loop_conn *conn);
/**
* Try to parse the incoming data as an HTTP request.
*
* @param conn connection to process
* @return result of the parse
*/
http_parse_error http_loop_parse_request(event_loop_conn *conn);
/**
* Try to match the parsed request with one of the defined routes, aka route the
* request.
*
* @param conn connection to process
*/
void http_loop_route_request(event_loop_conn *conn);
/**
* Advance the processing of the routed request's processing by cycling through
* the request's various steps.
*
* @param conn connection to process
*/
void http_loop_process_request(event_loop_conn *conn);
/**
* Handles the response processing. This is the `write_data` function for the
* event loop.
*
* @param conn connection to process
*/
void http_loop_handle_response(event_loop_conn *conn);
/**
* Request step that consumes the request body and stores it in a buffer.
*
* @param conn connection to process
* @return true if the body has been fully received, false otherwise
*/
bool http_loop_step_body_to_buf(event_loop_conn *conn);
/**
* Request step that consumes the request body and stores it in a file.
*
* @param conn connection to process
* @return true if the body has been fully received, false otherwise
*/
bool http_loop_step_body_to_file(event_loop_conn *conn);
/**
* Try to parse the Content-Length header.
*
* @param conn connection to process
*/
bool http_loop_step_parse_content_length(event_loop_conn *conn);
/**
* Authenticate the request using the X-Api-Key header.
*
* @param conn connection to check
* @return always true
*/
bool http_loop_step_auth(event_loop_conn *conn);
/**
* A step that simply sets the connection's state to res.
*
* @param conn connection to process
* @return always true
*/
bool http_loop_step_switch_res(event_loop_conn *conn);
/**
* Write the HTTP header back to the connection. If `res->head` is not set, a
* header will be generated for you.
*
* @param conn connection to process
*/
bool http_loop_step_write_header(event_loop_conn *conn);
/**
* Write the HTTP body back to the connection.
*
* @param conn connection to process
*/
bool http_loop_step_write_body(event_loop_conn *conn);
/**
* Initialize a new http loop.
*
* @param routes array of routes that should be served
* @param route_count how many elements are in `routes`
* @param custom_gctx the application's custom global context; can be NULL
* @param custom_ctx_init function to initialize a new custom context
* @param custom_ctx_reset function to reset a custom context
* @param custom_ctx_free function to free a custom context; will always be run
* after a reset
* @return pointer to the newly allocated object
*/
http_loop *http_loop_init(http_route *routes, size_t route_count,
void *custom_gctx, void *(*custom_ctx_init)(),
void(custom_ctx_reset)(void *),
void(custom_ctx_free)(void *));
/**
* Set the API key the authentication steps should use.
*
* @param hl HTTP loop to set key in
* @param api_key API key to use
*/
void http_loop_set_api_key(http_loop *hl, const char *api_key);
/**
* Run the HTTP loop. This function never returns.
*
* @param el the event loop
* @param port on what port to listen
*/
void http_loop_run(http_loop *hl, int port);
#endif

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@ -1,10 +1,10 @@
#ifndef LANDER
#define LANDER
#include "http_loop.h"
#include "lnm/common.h"
#include "lnm/http/loop.h"
#include "lsm/store.h"
extern http_route lander_routes[6];
extern const char lander_key_charset[];
typedef struct lander_gctx {
@ -31,44 +31,44 @@ 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_redirect_secure(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_redirect(event_loop_conn *conn);
lnm_http_step_err lander_post_paste_secure(lnm_http_conn *conn);
bool lander_stream_body_to_entry(event_loop_conn *conn);
lnm_http_step_err lander_stream_body_to_entry(lnm_http_conn *conn);
bool lander_stream_body_to_client(event_loop_conn *conn);
lnm_http_step_err lander_post_redirect_body_to_attr(lnm_http_conn *conn);
bool lander_post_redirect_body_to_attr(event_loop_conn *conn);
lnm_http_step_err lander_remove_entry(lnm_http_conn *conn);
bool lander_remove_entry(event_loop_conn *conn);
lnm_http_step_err lander_post_file(lnm_http_conn *conn);
bool lander_post_file(event_loop_conn *conn);
lnm_http_step_err lander_post_file_secure(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,
http_header header_type);
void lander_attr_to_header(lnm_http_loop_ctx *ctx, lander_attr_type attr_type,
lnm_http_header header_type);
#endif

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@ -0,0 +1,3 @@
api_key = test
server_url = http://localhost:18080
ca_certs_bundle = /etc/ssl/certs/ca-certificates.crt

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@ -10,25 +10,56 @@
#include "landerctl.h"
const char *cfg_file_name = ".landerrc";
const char *usage = "%s [-SPFsv] arg [key]\n";
const char *usage = "%s [-SPFsv] [-c CONFIG_FILE] arg [key]\n";
int main(int argc, char **argv) {
landerctl_ctx ctx = {0};
char *err_msg = NULL;
landerctl_cfg_err parse_res;
const char *home_dir = getenv("HOME");
const char *cfg_path;
if (home_dir == NULL) {
parse_res = landerctl_cfg_parse(&ctx.cfg, cfg_file_name);
cfg_path = cfg_file_name;
} else {
char cfg_path[strlen(home_dir) + strlen(cfg_file_name) + 2];
sprintf(cfg_path, "%s/%s", home_dir, cfg_file_name);
parse_res = landerctl_cfg_parse(&ctx.cfg, cfg_path);
// This is a blatant memleak if a custom config file is set, but it really
// doesn't matter for a short-lived CLI tool
char *buf = malloc(strlen(home_dir) + strlen(cfg_file_name) + 2);
sprintf(buf, "%s/%s", home_dir, cfg_file_name);
cfg_path = buf;
}
opterr = 0;
int c;
while ((c = getopt(argc, argv, "SPFsvc:")) != -1) {
switch (c) {
case 'S':
ctx.mode = landerctl_mode_short;
break;
case 'P':
ctx.mode = landerctl_mode_paste;
break;
case 'F':
ctx.mode = landerctl_mode_file;
break;
case 's':
ctx.secure = true;
break;
case 'v':
ctx.verbose = true;
break;
case 'c':
cfg_path = optarg;
break;
case '?':
printf(usage, argv[0]);
exit(2);
}
}
char *err_msg = NULL;
landerctl_cfg_err parse_res = landerctl_cfg_parse(&ctx.cfg, cfg_path);
switch (parse_res) {
case landerctl_cfg_err_ok:
break;
@ -48,33 +79,6 @@ int main(int argc, char **argv) {
exit(1);
}
opterr = 0;
int c;
while ((c = getopt(argc, argv, "SPFsv")) != -1) {
switch (c) {
case 'S':
ctx.mode = landerctl_mode_short;
break;
case 'P':
ctx.mode = landerctl_mode_paste;
break;
case 'F':
ctx.mode = landerctl_mode_file;
break;
case 's':
ctx.secure = true;
break;
case 'v':
ctx.verbose = true;
break;
case '?':
printf(usage, argv[0]);
exit(2);
}
}
if (ctx.mode == landerctl_mode_none) {
printf("No mode specified.\n\n");
printf(usage, argv[0]);

1
lnm 160000

@ -0,0 +1 @@
Subproject commit 195eb9eb4832f80ee8ab2372192196018362b252

View File

@ -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);
}
}
}

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@ -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);
}

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@ -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:;
}
}

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@ -1,131 +0,0 @@
#include <stdlib.h>
#include "http/types.h"
// Very important that this is in the same order as http_request_method
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] = {
// 1xx
{
"Continue", // 100
"Switching Protocols", // 101,
"Processing", // 102
"Early Hints", // 103
},
// 2xx
{
"OK", // 200
"Created", // 201
"Accepted", // 202
"Non-Authoritative Information", // 203
"No Content", // 204
"Reset Content", // 205
"Partial Content", // 206
"Multi-Status", // 207
"Already Reported", // 208
},
// 3xx
{
"Multiple Choices", // 300
"Moved Permanently", // 301
"Found", // 302
"See Other", // 303
"Not Modified", // 304
NULL, // 305
NULL, // 306
"Temporary Redirect", // 307
"Permanent Redirect", // 308
},
// 4xx
{
"Bad Request", // 400
"Unauthorized", // 401
"Payment Required", // 402
"Forbidden", // 403
"Not Found", // 404
"Method Not Allowed", // 405
"Not Acceptable", // 406
"Proxy Authentication Required", // 407
"Request Timeout", // 408
"Conflict", // 409
"Gone", // 410
"Length Required", // 411
"Precondition Failed", // 412
"Content Too Large", // 413
"URI Too Long", // 414
"Unsupported Media Type", // 415
"Range Not Satisfiable", // 416
"Expectation Failed", // 417
"I'm a teapot", // 418
NULL, // 419
NULL, // 420
"Misdirected Request", // 421
"Unprocessable Content", // 422
"Locked", // 423
"Failed Dependency", // 424
"Too Early", // 425
"Upgrade Required", // 426
NULL, // 427
"Precondition Required", // 428
"Too Many Requests", // 429
NULL, // 430
"Request Header Fields Too Large", // 431
},
// 5xx
{
"Internal Server Error", // 500
"Not Implemented", // 501
"Bad Gateway", // 502
"Service Unavailable", // 503
"Gateway Timeout", // 504
"HTTP Version Not Supported", // 505
"Variant Also Negotiates", // 506
"Insufficient Storage", // 507
"Loop Detected", // 508
NULL, // 509
"Not Extended", // 510
"Network Authentication Required" // 511
},
};
const char *http_header_names[] = {
"Connection",
"Location",
"Content-Type",
"Content-Disposition"
};
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

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@ -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);
}

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@ -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);
}

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@ -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);
}

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@ -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);
}

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@ -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;
}
}

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@ -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;
}
}

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@ -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;
}

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@ -1,66 +1,27 @@
#include <stdio.h>
#include <string.h>
#include "http/types.h"
#include "http_loop.h"
#include "lander.h"
#include "lnm/common.h"
#include "lsm/store.h"
#include "lander.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 +33,30 @@ 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 struct phr_header *header = &ctx->req.headers[i];
const char *header_value;
size_t header_value_len;
if (strncmp(header->name, header_name, header->name_len) == 0) {
if (header->value_len > 0) {
if (lnm_http_req_header_get_s(&header_value, &header_value_len, &ctx->req,
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,
http_header header_type) {
void lander_attr_to_header(lnm_http_loop_ctx *ctx, lander_attr_type attr_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);
memcpy(buf, lsm_str_ptr(value), lsm_str_len(value));
buf[lsm_str_len(value)] = '\0';
http_res_add_header(&ctx->res, header_type, buf, true);
lnm_http_res_add_header_len(&ctx->res, header_type,
(char *)lsm_str_ptr(value), lsm_str_len(value),
false);
}
}

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@ -1,29 +1,31 @@
#include "lnm/http/req.h"
#include "lnm/loop.h"
#include "lander.h"
bool lander_remove_entry(event_loop_conn *conn) {
http_loop_ctx *ctx = conn->ctx;
lnm_http_step_err lander_remove_entry(lnm_http_conn *conn) {
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];
int key_len = ctx->req.regex_groups[1].rm_eo - ctx->req.regex_groups[1].rm_so;
const char *key_s;
size_t key_len = lnm_http_req_route_segment(&key_s, &ctx->req, "key");
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;
return true;
ctx->res.status = lnm_http_status_not_found;
break;
default:
ctx->res.status = http_internal_server_error;
return true;
ctx->res.status = lnm_http_status_internal_server_error;
break;
}
lsm_entry_remove(c_ctx->entry);
return true;
return lnm_http_step_err_done;
}

View File

@ -1,12 +1,15 @@
#include <stdio.h>
#include <string.h>
#include "event_loop.h"
#include "http/res.h"
#include "http/types.h"
#include "lander.h"
#include "log.h"
#include "lnm/http/consts.h"
#include "lnm/http/loop.h"
#include "lnm/http/req.h"
#include "lnm/log.h"
#include "lnm/loop.h"
#include "lsm/store.h"
#include "lander.h"
static const char index_page[] =
"<!DOCTYPE html>\n"
"<html>\n"
@ -17,18 +20,19 @@ static const char index_page[] =
" </body>\n"
"</html>\n";
bool lander_get_index(event_loop_conn *conn) {
http_loop_ctx *ctx = conn->ctx;
lnm_http_step_err lander_get_index(lnm_http_conn *conn) {
lnm_http_loop_ctx *ctx = conn->ctx;
http_res_set_body_buf(&ctx->res, index_page, sizeof(index_page) - 1, false);
http_res_set_mime_type(&ctx->res, http_mime_html);
lnm_http_res_body_set_buf(&ctx->res, (char *)index_page,
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 true;
return lnm_http_step_err_done;
}
void lander_get_redirect(event_loop_conn *conn) {
http_loop_ctx *ctx = conn->ctx;
lnm_http_step_err lander_get_redirect(lnm_http_conn *conn) {
lnm_http_loop_ctx *ctx = conn->ctx;
lander_ctx *c_ctx = ctx->c;
// For redirects, the URL is stored as an in-memory attribute
@ -37,124 +41,107 @@ void lander_get_redirect(event_loop_conn *conn) {
// This shouldn't be able to happen
if (lsm_entry_attr_get(&url_attr_val, c_ctx->entry, lander_attr_type_url) !=
lsm_error_ok) {
error("Entry of type redirect detected without URL attribute");
lnm_lerror("lander", "%s",
"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);
memcpy(buf, lsm_str_ptr(url_attr_val), lsm_str_len(url_attr_val));
lnm_http_res_add_header_len(&ctx->res, lnm_http_header_location,
(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;
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;
return lnm_http_step_err_done;
}
void lander_get_paste(event_loop_conn *conn) {
http_loop_ctx *ctx = conn->ctx;
lnm_err lander_entry_data_streamer(uint64_t *written, char *buf,
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);
http_res_set_mime_type(&ctx->res, http_mime_txt);
lsm_entry_data_read(written, buf, c_ctx->entry, len);
return lnm_err_ok;
}
void lander_get_file(event_loop_conn *conn) {
http_loop_ctx *ctx = conn->ctx;
lnm_http_step_err lander_get_paste(lnm_http_conn *conn) {
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;
if (lsm_entry_attr_get(&value, c_ctx->entry, lander_attr_type_file_name) ==
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));
} else {
buf = malloc(11);
strcpy(buf, "attachment");
}
http_res_add_header(&ctx->res, http_header_content_disposition, buf, true);
return lnm_http_step_err_done;
}
bool lander_get_entry(event_loop_conn *conn) {
http_loop_ctx *ctx = conn->ctx;
lnm_http_step_err lander_get_entry(lnm_http_conn *conn) {
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];
int key_len = ctx->req.regex_groups[1].rm_eo - ctx->req.regex_groups[1].rm_so;
const char *key_s;
size_t key_len = lnm_http_req_route_segment(&key_s, &ctx->req, "key");
lsm_str *key;
lsm_str_init_copy_n(&key, (char *)key_s, key_len);
lsm_error lsm_res = lsm_store_open_read(&c_ctx->entry, c_gctx->store, key);
lsm_str_free(key);
switch (lsm_store_open_read(&c_ctx->entry, c_gctx->store, key)) {
switch (lsm_res) {
case lsm_error_ok:
break;
case lsm_error_not_found:
ctx->res.status = http_not_found;
conn->state = event_loop_conn_state_res;
return true;
ctx->res.status = lnm_http_status_not_found;
return lnm_http_step_err_res;
default:
ctx->res.status = http_internal_server_error;
conn->state = event_loop_conn_state_res;
return true;
ctx->res.status = lnm_http_status_internal_server_error;
return lnm_http_step_err_res;
}
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;
default:
ctx->res.status = lnm_http_status_internal_server_error;
res = lnm_http_step_err_res;
}
return true;
}
bool lander_stream_body_to_client(event_loop_conn *conn) {
http_loop_ctx *ctx = conn->ctx;
lander_ctx *c_ctx = ctx->c;
if ((c_ctx->entry == NULL) ||
(ctx->res.body.expected_len == ctx->res.body.len)) {
return true;
}
uint64_t to_write = MIN(EVENT_LOOP_BUFFER_SIZE - conn->wbuf_size,
ctx->res.body.expected_len - ctx->res.body.len);
uint64_t read = 0;
lsm_entry_data_read(&read, (char *)&conn->wbuf[conn->wbuf_size], c_ctx->entry,
to_write);
ctx->res.body.len += read;
conn->wbuf_size += read;
return false;
return res;
}

View File

@ -1,9 +1,11 @@
#include "http/res.h"
#include "http/types.h"
#include "lander.h"
#include "log.h"
#include <string.h>
#include "lnm/http/req.h"
#include "lnm/loop.h"
#include "lsm/store.h"
#include "lander.h"
static void randomize_key(char *key, int len) {
size_t charset_len = strlen(lander_key_charset);
@ -19,39 +21,36 @@ static void randomize_key(char *key, int len) {
*
* @return true on success, false otherwise
*/
bool lander_insert_entry(http_loop_ctx *ctx) {
http_loop_gctx *gctx = ctx->g;
bool lander_insert_entry(lnm_http_loop_ctx *ctx, bool secure) {
lnm_http_loop_gctx *gctx = ctx->g;
lander_gctx *c_gctx = gctx->c;
lander_ctx *c_ctx = ctx->c;
const char *key_s;
size_t key_len = lnm_http_req_route_segment(&key_s, &ctx->req, "key");
lsm_str *key;
int key_len;
if (ctx->req.regex_groups[2].rm_eo == ctx->req.regex_groups[2].rm_so) {
if (key_len == 0) {
// Generate a random key to insert
bool secure =
(ctx->req.regex_groups[1].rm_eo - ctx->req.regex_groups[1].rm_so) == 1;
key_len = secure ? 16 : 4;
char *key_s = malloc((key_len + 1) * sizeof(char));
key_s = malloc((key_len + 1) * sizeof(char));
randomize_key(key_s, key_len);
lsm_str_init(&key, key_s);
randomize_key((char *)key_s, key_len);
lsm_str_init(&key, (char *)key_s);
} else {
const char *key_s = &ctx->req.path[ctx->req.regex_groups[2].rm_so];
key_len = ctx->req.regex_groups[2].rm_eo - ctx->req.regex_groups[2].rm_so;
lsm_str_init_copy_n(&key, key_s, key_len);
}
// 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 +60,75 @@ 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);
ctx->res.status = http_created;
lnm_http_res_add_header(&ctx->res, lnm_http_header_location, buf, true);
ctx->res.status = lnm_http_status_created;
return true;
}
bool lander_post_redirect(event_loop_conn *conn) {
http_loop_ctx *ctx = conn->ctx;
static lnm_http_step_err __lander_post_redirect(lnm_http_conn *conn,
bool secure) {
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 true;
if (!lander_insert_entry(ctx, secure)) {
return lnm_http_step_err_res;
}
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) {
http_loop_ctx *ctx = conn->ctx;
lnm_http_step_err lander_post_redirect(lnm_http_conn *conn) {
return __lander_post_redirect(conn, false);
}
lnm_http_step_err lander_post_redirect_secure(lnm_http_conn *conn) {
return __lander_post_redirect(conn, true);
}
lnm_http_step_err lander_post_redirect_body_to_attr(lnm_http_conn *conn) {
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) {
http_loop_ctx *ctx = conn->ctx;
static lnm_http_step_err __lander_post_paste(lnm_http_conn *conn, bool secure) {
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 true;
if (!lander_insert_entry(ctx, secure)) {
return lnm_http_step_err_res;
}
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) {
http_loop_ctx *ctx = conn->ctx;
lnm_http_step_err lander_post_paste(lnm_http_conn *conn) {
return __lander_post_paste(conn, false);
}
lnm_http_step_err lander_post_paste_secure(lnm_http_conn *conn) {
return __lander_post_paste(conn, true);
}
static lnm_http_step_err __lander_post_file(lnm_http_conn *conn, bool secure) {
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 true;
if (!lander_insert_entry(ctx, secure)) {
return lnm_http_step_err_res;
}
lsm_entry_attr_insert_uint8_t(c_ctx->entry, lander_attr_type_entry_type,
@ -124,5 +137,13 @@ 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;
}
lnm_http_step_err lander_post_file(lnm_http_conn *conn) {
return __lander_post_file(conn, false);
}
lnm_http_step_err lander_post_file_secure(lnm_http_conn *conn) {
return __lander_post_file(conn, true);
}

View File

@ -1,22 +1,27 @@
#include <string.h>
#include "lnm/http/loop.h"
#include "lnm/loop.h"
#include "lander.h"
bool lander_stream_body_to_entry(event_loop_conn *conn) {
http_loop_ctx *ctx = conn->ctx;
lnm_http_step_err lander_stream_body_to_entry(lnm_http_conn *conn) {
lnm_http_loop_ctx *ctx = conn->ctx;
lander_ctx *c_ctx = ctx->c;
uint64_t to_append =
MIN(conn->rbuf_size - conn->rbuf_read,
LNM_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;
}

View File

@ -1,31 +0,0 @@
#include <time.h>
#include "log.h"
const char *log_level_names[] = {"DEBUG", "INFO ", "WARN ", "ERROR",
"CRITICAL"};
log_level _log_level = log_level_debug;
void _lander_log(log_level level, FILE *f, const char *fmt, ...) {
if (level < _log_level) {
return;
}
// Log to stdout by default
f = (f == NULL) ? stdout : f;
char date_str[32];
time_t now = time(NULL);
strftime(date_str, sizeof(date_str) - 1, "%Y-%m-%d %H:%M:%S",
localtime(&now));
fprintf(f, "[%s][%s] ", date_str, log_level_names[level]);
va_list ap;
va_start(ap, fmt);
vfprintf(f, fmt, ap);
va_end(ap);
fprintf(f, "\n");
}

View File

@ -2,13 +2,93 @@
#include <stdlib.h>
#include <time.h>
#include "lnm/http/loop.h"
#include "lnm/log.h"
#include "lander.h"
#include "log.h"
const char *lander_server = "lander/" LANDER_VERSION;
lnm_http_loop *loop_init(lander_gctx *gctx, const char *api_key) {
lnm_http_loop *hl;
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_loop_set_server(hl, lander_server);
lnm_http_router *router;
lnm_http_router_init(&router);
lnm_http_route *route;
lnm_http_router_add(&route, router, lnm_http_method_get, "/");
lnm_http_route_step_append(route, lander_get_index, false);
lnm_http_router_add(&route, router, lnm_http_method_get, "/:key");
lnm_http_route_step_append(route, lander_get_entry, false);
lnm_http_router_add(&route, router, lnm_http_method_delete, "/:key");
lnm_http_route_step_append(route, lnm_http_loop_step_auth, false);
lnm_http_route_step_append(route, lander_remove_entry, false);
lnm_http_router_add(&route, router, lnm_http_method_post, "/s/");
lnm_http_route_step_append(route, lnm_http_loop_step_auth, false);
lnm_http_route_step_append(route, lander_post_redirect, false);
lnm_http_route_step_append(route, lnm_http_loop_step_body_to_buf, false);
lnm_http_route_step_append(route, lander_post_redirect_body_to_attr, false);
lnm_http_router_add(&route, router, lnm_http_method_post, "/sl/");
lnm_http_route_step_append(route, lnm_http_loop_step_auth, false);
lnm_http_route_step_append(route, lander_post_redirect_secure, false);
lnm_http_route_step_append(route, lnm_http_loop_step_body_to_buf, false);
lnm_http_route_step_append(route, lander_post_redirect_body_to_attr, false);
lnm_http_router_add(&route, router, lnm_http_method_post, "/s/:key");
lnm_http_route_step_append(route, lnm_http_loop_step_auth, false);
lnm_http_route_step_append(route, lander_post_redirect, false);
lnm_http_route_step_append(route, lnm_http_loop_step_body_to_buf, false);
lnm_http_route_step_append(route, lander_post_redirect_body_to_attr, false);
lnm_http_router_add(&route, router, lnm_http_method_post, "/p/");
lnm_http_route_step_append(route, lnm_http_loop_step_auth, false);
lnm_http_route_step_append(route, lander_post_paste, false);
lnm_http_route_step_append(route, lander_stream_body_to_entry, false);
lnm_http_router_add(&route, router, lnm_http_method_post, "/pl/");
lnm_http_route_step_append(route, lnm_http_loop_step_auth, false);
lnm_http_route_step_append(route, lander_post_paste_secure, false);
lnm_http_route_step_append(route, lander_stream_body_to_entry, false);
lnm_http_router_add(&route, router, lnm_http_method_post, "/p/:key");
lnm_http_route_step_append(route, lnm_http_loop_step_auth, false);
lnm_http_route_step_append(route, lander_post_paste, false);
lnm_http_route_step_append(route, lander_stream_body_to_entry, false);
lnm_http_router_add(&route, router, lnm_http_method_post, "/f/");
lnm_http_route_step_append(route, lnm_http_loop_step_auth, false);
lnm_http_route_step_append(route, lander_post_file, false);
lnm_http_route_step_append(route, lander_stream_body_to_entry, false);
lnm_http_router_add(&route, router, lnm_http_method_post, "/fl/");
lnm_http_route_step_append(route, lnm_http_loop_step_auth, false);
lnm_http_route_step_append(route, lander_post_file_secure, false);
lnm_http_route_step_append(route, lander_stream_body_to_entry, false);
lnm_http_router_add(&route, router, lnm_http_method_post, "/f/:key");
lnm_http_route_step_append(route, lnm_http_loop_step_auth, false);
lnm_http_route_step_append(route, lander_post_file, false);
lnm_http_route_step_append(route, lander_stream_body_to_entry, false);
lnm_http_loop_router_set(hl, router);
return hl;
}
#define ENV(var, env_var) \
const char *var = getenv(env_var); \
if (var == NULL) { \
critical(1, "Missing environment variable %s", env_var); \
lnm_lcritical("main", "Missing environment variable %s", env_var); \
exit(1); \
}
#define ENV_OPT(var, env_var, default) \
@ -18,9 +98,11 @@
}
int main() {
setvbuf(stdout, NULL, _IONBF, 0);
srand(time(NULL));
lnm_log_init_global();
lnm_log_register_stdout(lnm_log_level_info);
ENV(api_key, "LANDER_API_KEY");
ENV_OPT(port_str, "LANDER_PORT", "18080");
ENV_OPT(data_dir_s, "LANDER_DATA_DIR", ".");
@ -28,7 +110,8 @@ int main() {
int port = atoi(port_str);
if (port <= 0 || port >= 1 << 16) {
critical(1, "Invalid TCP port %s", port_str);
lnm_lcritical("main", "Invalid TCP port %s", port_str);
exit(1);
}
lander_gctx *c_gctx = lander_gctx_init();
@ -37,19 +120,14 @@ int main() {
lsm_str *data_dir;
lsm_str_init_copy(&data_dir, (char *)data_dir_s);
info("Initializing store from path '%s'", data_dir_s);
lnm_linfo("main", "Initializing store from path '%s'", data_dir_s);
if (lsm_store_load(&c_gctx->store, data_dir) != lsm_error_ok) {
critical(2, "Failed to load existing store.");
lnm_lcritical("main", "%s", "Failed to load existing store.");
}
info("Store loaded containing %lu entries", lsm_store_size(c_gctx->store));
http_loop *hl = http_loop_init(
lander_routes, sizeof(lander_routes) / sizeof(lander_routes[0]), c_gctx,
lander_ctx_init, (void (*)(void *))lander_ctx_reset,
(void (*)(void *))lander_ctx_free);
http_loop_set_api_key(hl, api_key);
http_loop_run(hl, port);
lnm_linfo("main", "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, 1, 0);
}

View File

@ -1,87 +0,0 @@
/*
* 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

View File

@ -1,665 +0,0 @@
/*
* 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