mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-11-13 23:15:09 +01:00
666 lines
26 KiB
C
666 lines
26 KiB
C
/*
|
|
* 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
|