From f5c4671bfbad96bf346bd7e9a21fc4317b4959df Mon Sep 17 00:00:00 2001 From: Indrajith K L Date: Sat, 3 Dec 2022 17:00:20 +0530 Subject: Adds most of the tools --- .../v/thirdparty/picohttpparser/picohttpparser.c | 28 + .../v/thirdparty/picohttpparser/picohttpparser.h | 112 ++++ .../v/thirdparty/picohttpparser/src/README.md | 116 ++++ .../thirdparty/picohttpparser/src/picohttpparser.c | 645 +++++++++++++++++++++ .../thirdparty/picohttpparser/src/picohttpparser.h | 87 +++ 5 files changed, 988 insertions(+) create mode 100644 v_windows/v/thirdparty/picohttpparser/picohttpparser.c create mode 100644 v_windows/v/thirdparty/picohttpparser/picohttpparser.h create mode 100644 v_windows/v/thirdparty/picohttpparser/src/README.md create mode 100644 v_windows/v/thirdparty/picohttpparser/src/picohttpparser.c create mode 100644 v_windows/v/thirdparty/picohttpparser/src/picohttpparser.h (limited to 'v_windows/v/thirdparty/picohttpparser') diff --git a/v_windows/v/thirdparty/picohttpparser/picohttpparser.c b/v_windows/v/thirdparty/picohttpparser/picohttpparser.c new file mode 100644 index 0000000..7a6abd0 --- /dev/null +++ b/v_windows/v/thirdparty/picohttpparser/picohttpparser.c @@ -0,0 +1,28 @@ +#include "src/picohttpparser.c" + +#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32)) +#define __WINDOWS__ +#endif + +// date +#include + +const char* get_date() { + time_t t; + struct tm tm; + static const char *days[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; + static const char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; + static char date[30] = "Thu, 01 Jan 1970 00:00:00 GMT"; + + time(&t); + #ifdef __WINDOWS__ + gmtime_s(&t, &tm); + #else + gmtime_r(&t, &tm); + #endif + strftime(date, 30, "---, %d --- %Y %H:%M:%S GMT", &tm); + memcpy(date, days[tm.tm_wday], 3); + memcpy(date + 8, months[tm.tm_mon], 3); + + return date; +} diff --git a/v_windows/v/thirdparty/picohttpparser/picohttpparser.h b/v_windows/v/thirdparty/picohttpparser/picohttpparser.h new file mode 100644 index 0000000..34faaf6 --- /dev/null +++ b/v_windows/v/thirdparty/picohttpparser/picohttpparser.h @@ -0,0 +1,112 @@ + +typedef struct phr_header phr_header_t; + +#include "src/picohttpparser.h" +#include + +#define ADVANCE_TOKEN2(buf, tok, toklen, max_len) \ + do {\ + for (int i = 0; i < max_len; i++) {\ + if (buf[i] == ' ') {\ + tok = buf;\ + toklen = i++;\ + while (buf[i] == ' ') i++;\ + buf += i;\ + break;\ + }\ + }\ + } while (0) + +static inline int phr_parse_request_path(const char *buf_start, size_t len, const char **method, size_t *method_len, const char **path, size_t *path_len) { + if (len < 14) return -2; + const char *buf = buf_start, *buf_end = buf_start + len; + + ADVANCE_TOKEN2(buf, *method, *method_len, 9); + len -= buf-buf_start; + ADVANCE_TOKEN2(buf, *path, *path_len, len); + if (*method_len == 0 || *path_len == 0) return -1; + + return buf-buf_start; +} + +static inline int phr_parse_request_path_pipeline(const char *buf_start, size_t len, const char **method, size_t *method_len, const char **path, size_t *path_len) { + if (len < 14) return -2; + const char *buf = buf_start, *buf_end = buf_start + len; + + ADVANCE_TOKEN2(buf, *method, *method_len, 9); + len -= buf-buf_start; + ADVANCE_TOKEN2(buf, *path, *path_len, len); + if (*method_len == 0 || *path_len == 0) return -1; + + while (buf < buf_end) { + ++buf; + if (*(uint32_t*)buf == 0x0a0d0a0d) { + buf += 4; + return (int)(buf - buf_start); + } + }; + + return -1; +} + +// date +const char* get_date(); + +// branchlut +const char gDigitsLut[200] = { + '0','0','0','1','0','2','0','3','0','4','0','5','0','6','0','7','0','8','0','9', + '1','0','1','1','1','2','1','3','1','4','1','5','1','6','1','7','1','8','1','9', + '2','0','2','1','2','2','2','3','2','4','2','5','2','6','2','7','2','8','2','9', + '3','0','3','1','3','2','3','3','3','4','3','5','3','6','3','7','3','8','3','9', + '4','0','4','1','4','2','4','3','4','4','4','5','4','6','4','7','4','8','4','9', + '5','0','5','1','5','2','5','3','5','4','5','5','5','6','5','7','5','8','5','9', + '6','0','6','1','6','2','6','3','6','4','6','5','6','6','6','7','6','8','6','9', + '7','0','7','1','7','2','7','3','7','4','7','5','7','6','7','7','7','8','7','9', + '8','0','8','1','8','2','8','3','8','4','8','5','8','6','8','7','8','8','8','9', + '9','0','9','1','9','2','9','3','9','4','9','5','9','6','9','7','9','8','9','9' +}; + +static inline int u64toa(char* buf, uint64_t value) { + const char* b = buf; + if (value < 100000000) { + uint32_t v = (uint32_t)(value); + if (v < 10000) { + const uint32_t d1 = (v / 100) << 1; + const uint32_t d2 = (v % 100) << 1; + + if (v >= 1000) + *buf++ = gDigitsLut[d1]; + if (v >= 100) + *buf++ = gDigitsLut[d1 + 1]; + if (v >= 10) + *buf++ = gDigitsLut[d2]; + *buf++ = gDigitsLut[d2 + 1]; + } + else { + // value = bbbbcccc + const uint32_t b = v / 10000; + const uint32_t c = v % 10000; + + const uint32_t d1 = (b / 100) << 1; + const uint32_t d2 = (b % 100) << 1; + + const uint32_t d3 = (c / 100) << 1; + const uint32_t d4 = (c % 100) << 1; + + if (value >= 10000000) + *buf++ = gDigitsLut[d1]; + if (value >= 1000000) + *buf++ = gDigitsLut[d1 + 1]; + if (value >= 100000) + *buf++ = gDigitsLut[d2]; + *buf++ = gDigitsLut[d2 + 1]; + + *buf++ = gDigitsLut[d3]; + *buf++ = gDigitsLut[d3 + 1]; + *buf++ = gDigitsLut[d4]; + *buf++ = gDigitsLut[d4 + 1]; + } + } + // *buf = '\0'; + return buf - b; +} diff --git a/v_windows/v/thirdparty/picohttpparser/src/README.md b/v_windows/v/thirdparty/picohttpparser/src/README.md new file mode 100644 index 0000000..cb32f58 --- /dev/null +++ b/v_windows/v/thirdparty/picohttpparser/src/README.md @@ -0,0 +1,116 @@ +PicoHTTPParser +============= + +Copyright (c) 2009-2014 [Kazuho Oku](https://github.com/kazuho), [Tokuhiro Matsuno](https://github.com/tokuhirom), [Daisuke Murase](https://github.com/typester), [Shigeo Mitsunari](https://github.com/herumi) + +PicoHTTPParser is a tiny, primitive, fast HTTP request/response parser. + +Unlike most parsers, it is stateless and does not allocate memory by itself. +All it does is accept pointer to buffer and the output structure, and setups the pointers in the latter to point at the necessary portions of the buffer. + +The code is widely deployed within Perl applications through popular modules that use it, including [Plack](https://metacpan.org/pod/Plack), [Starman](https://metacpan.org/pod/Starman), [Starlet](https://metacpan.org/pod/Starlet), [Furl](https://metacpan.org/pod/Furl). It is also the HTTP/1 parser of [H2O](https://github.com/h2o/h2o). + +Check out [test.c] to find out how to use the parser. + +The software is dual-licensed under the Perl License or the MIT License. + +Usage +----- + +The library exposes four functions: `phr_parse_request`, `phr_parse_response`, `phr_parse_headers`, `phr_decode_chunked`. + +### phr_parse_request + +The example below reads an HTTP request from socket `sock` using `read(2)`, parses it using `phr_parse_request`, and prints the details. + +```c +char buf[4096], *method, *path; +int pret, minor_version; +struct phr_header headers[100]; +size_t buflen = 0, prevbuflen = 0, method_len, path_len, num_headers; +ssize_t rret; + +while (1) { + /* read the request */ + while ((rret = read(sock, buf + buflen, sizeof(buf) - buflen)) == -1 && errno == EINTR) + ; + if (rret <= 0) + return IOError; + prevbuflen = buflen; + buflen += rret; + /* parse the request */ + num_headers = sizeof(headers) / sizeof(headers[0]); + pret = phr_parse_request(buf, buflen, &method, &method_len, &path, &path_len, + &minor_version, headers, &num_headers, prevbuflen); + if (pret > 0) + break; /* successfully parsed the request */ + else if (pret == -1) + return ParseError; + /* request is incomplete, continue the loop */ + assert(pret == -2); + if (buflen == sizeof(buf)) + return RequestIsTooLongError; +} + +printf("request is %d bytes long\n", pret); +printf("method is %.*s\n", (int)method_len, method); +printf("path is %.*s\n", (int)path_len, path); +printf("HTTP version is 1.%d\n", minor_version); +printf("headers:\n"); +for (i = 0; i != num_headers; ++i) { + printf("%.*s: %.*s\n", (int)headers[i].name_len, headers[i].name, + (int)headers[i].value_len, headers[i].value); +} +``` + +### phr_parse_response, phr_parse_headers + +`phr_parse_response` and `phr_parse_headers` provide similar interfaces as `phr_parse_request`. `phr_parse_response` parses an HTTP response, and `phr_parse_headers` parses the headers only. + +### phr_decode_chunked + +The example below decodes incoming data in chunked-encoding. The data is decoded in-place. + +```c +struct phr_chunked_decoder decoder = {}; /* zero-clear */ +char *buf = malloc(4096); +size_t size = 0, capacity = 4096, rsize; +ssize_t rret, pret; + +/* set consume_trailer to 1 to discard the trailing header, or the application + * should call phr_parse_headers to parse the trailing header */ +decoder.consume_trailer = 1; + +do { + /* expand the buffer if necessary */ + if (size == capacity) { + capacity *= 2; + buf = realloc(buf, capacity); + assert(buf != NULL); + } + /* read */ + while ((rret = read(sock, buf + size, capacity - size)) == -1 && errno == EINTR) + ; + if (rret <= 0) + return IOError; + /* decode */ + rsize = rret; + pret = phr_decode_chunked(&decoder, buf + size, &rsize); + if (pret == -1) + return ParseError; + size += rsize; +} while (pret == -2); + +/* successfully decoded the chunked data */ +assert(pret >= 0); +printf("decoded data is at %p (%zu bytes)\n", buf, size); +``` + +Benchmark +--------- + +![benchmark results](http://i.gyazo.com/a85c18d3162dfb46b485bb41e0ad443a.png) + +The benchmark code is from [fukamachi/fast-http@6b91103](https://github.com/fukamachi/fast-http/tree/6b9110347c7a3407310c08979aefd65078518478). + +The internals of picohttpparser has been described to some extent in [my blog entry]( http://blog.kazuhooku.com/2014/11/the-internals-h2o-or-how-to-write-fast.html). diff --git a/v_windows/v/thirdparty/picohttpparser/src/picohttpparser.c b/v_windows/v/thirdparty/picohttpparser/src/picohttpparser.c new file mode 100644 index 0000000..74ccc3e --- /dev/null +++ b/v_windows/v/thirdparty/picohttpparser/src/picohttpparser.c @@ -0,0 +1,645 @@ +/* + * 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 +#include +#include +#ifdef __SSE4_2__ +#ifdef _MSC_VER +#include +#else +#include +#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_http_version(const char *buf, const char *buf_end, int *minor_version, int *ret) +{ + /* we want at least [HTTP/1.] 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 */ + headers[*num_headers].name = buf; + static const char ALIGNED(16) ranges1[] = "\x00 " /* control chars and up to SP */ + "\"\"" /* 0x22 */ + "()" /* 0x28,0x29 */ + ",," /* 0x2c */ + "//" /* 0x2f */ + ":@" /* 0x3a-0x40 */ + "[]" /* 0x5b-0x5d */ + "{\377"; /* 0x7b-0xff */ + int found; + buf = findchar_fast(buf, buf_end, ranges1, sizeof(ranges1) - 1, &found); + if (!found) { + CHECK_EOF(); + } + while (1) { + if (*buf == ':') { + break; + } else if (!token_char_map[(unsigned char)*buf]) { + *ret = -1; + return NULL; + } + ++buf; + CHECK_EOF(); + } + if ((headers[*num_headers].name_len = buf - headers[*num_headers].name) == 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 */ + ADVANCE_TOKEN(*method, *method_len); + do { + ++buf; + } while (*buf == ' '); + ADVANCE_TOKEN(*path, *path_len); + do { + ++buf; + } 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; + } while (*buf == ' '); + /* parse status code, we want at least [:digit:][:digit:][:digit:] to try to parse */ + if (buf_end - buf < 4) { + *ret = -2; + return NULL; + } + PARSE_INT_3(status); + + /* get message includig 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 */ + 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 diff --git a/v_windows/v/thirdparty/picohttpparser/src/picohttpparser.h b/v_windows/v/thirdparty/picohttpparser/src/picohttpparser.h new file mode 100644 index 0000000..8121b12 --- /dev/null +++ b/v_windows/v/thirdparty/picohttpparser/src/picohttpparser.h @@ -0,0 +1,87 @@ +/* + * Copyright (c) 2009-2014 Kazuho Oku, Tokuhiro Matsuno, Daisuke Murase, + * Shigeo Mitsunari + * + * The software is licensed under either the MIT License (below) or the Perl + * license. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#ifndef picohttpparser_h +#define picohttpparser_h + +#include + +#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 */ +typedef struct phr_header { + const char *name; + size_t name_len; + const char *value; + size_t value_len; +}phr_header; + +/* 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 at the tail of the supplied buffer. 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 -- cgit v1.2.3