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Diffstat (limited to 'app/nginx/src/http/ngx_http_parse.c')
-rw-r--r--app/nginx/src/http/ngx_http_parse.c2379
1 files changed, 0 insertions, 2379 deletions
diff --git a/app/nginx/src/http/ngx_http_parse.c b/app/nginx/src/http/ngx_http_parse.c
deleted file mode 100644
index 9f99473..0000000
--- a/app/nginx/src/http/ngx_http_parse.c
+++ /dev/null
@@ -1,2379 +0,0 @@
-
-/*
- * Copyright (C) Igor Sysoev
- * Copyright (C) Nginx, Inc.
- */
-
-
-#include <ngx_config.h>
-#include <ngx_core.h>
-#include <ngx_http.h>
-
-
-static uint32_t usual[] = {
- 0xffffdbfe, /* 1111 1111 1111 1111 1101 1011 1111 1110 */
-
- /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
- 0x7fff37d6, /* 0111 1111 1111 1111 0011 0111 1101 0110 */
-
- /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
-#if (NGX_WIN32)
- 0xefffffff, /* 1110 1111 1111 1111 1111 1111 1111 1111 */
-#else
- 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
-#endif
-
- /* ~}| {zyx wvut srqp onml kjih gfed cba` */
- 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
-
- 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
- 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
- 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
- 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */
-};
-
-
-#if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
-
-#define ngx_str3_cmp(m, c0, c1, c2, c3) \
- *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
-
-#define ngx_str3Ocmp(m, c0, c1, c2, c3) \
- *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
-
-#define ngx_str4cmp(m, c0, c1, c2, c3) \
- *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
-
-#define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
- *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
- && m[4] == c4
-
-#define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
- *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
- && (((uint32_t *) m)[1] & 0xffff) == ((c5 << 8) | c4)
-
-#define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
- *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
- && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
-
-#define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
- *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
- && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
-
-#define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
- *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
- && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4) \
- && m[8] == c8
-
-#else /* !(NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) */
-
-#define ngx_str3_cmp(m, c0, c1, c2, c3) \
- m[0] == c0 && m[1] == c1 && m[2] == c2
-
-#define ngx_str3Ocmp(m, c0, c1, c2, c3) \
- m[0] == c0 && m[2] == c2 && m[3] == c3
-
-#define ngx_str4cmp(m, c0, c1, c2, c3) \
- m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3
-
-#define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
- m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 && m[4] == c4
-
-#define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
- m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
- && m[4] == c4 && m[5] == c5
-
-#define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
- m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
- && m[4] == c4 && m[5] == c5 && m[6] == c6
-
-#define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
- m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
- && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7
-
-#define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
- m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
- && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7 && m[8] == c8
-
-#endif
-
-
-/* gcc, icc, msvc and others compile these switches as an jump table */
-
-ngx_int_t
-ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
-{
- u_char c, ch, *p, *m;
- enum {
- sw_start = 0,
- sw_method,
- sw_spaces_before_uri,
- sw_schema,
- sw_schema_slash,
- sw_schema_slash_slash,
- sw_host_start,
- sw_host,
- sw_host_end,
- sw_host_ip_literal,
- sw_port,
- sw_host_http_09,
- sw_after_slash_in_uri,
- sw_check_uri,
- sw_check_uri_http_09,
- sw_uri,
- sw_http_09,
- sw_http_H,
- sw_http_HT,
- sw_http_HTT,
- sw_http_HTTP,
- sw_first_major_digit,
- sw_major_digit,
- sw_first_minor_digit,
- sw_minor_digit,
- sw_spaces_after_digit,
- sw_almost_done
- } state;
-
- state = r->state;
-
- for (p = b->pos; p < b->last; p++) {
- ch = *p;
-
- switch (state) {
-
- /* HTTP methods: GET, HEAD, POST */
- case sw_start:
- r->request_start = p;
-
- if (ch == CR || ch == LF) {
- break;
- }
-
- if ((ch < 'A' || ch > 'Z') && ch != '_' && ch != '-') {
- return NGX_HTTP_PARSE_INVALID_METHOD;
- }
-
- state = sw_method;
- break;
-
- case sw_method:
- if (ch == ' ') {
- r->method_end = p - 1;
- m = r->request_start;
-
- switch (p - m) {
-
- case 3:
- if (ngx_str3_cmp(m, 'G', 'E', 'T', ' ')) {
- r->method = NGX_HTTP_GET;
- break;
- }
-
- if (ngx_str3_cmp(m, 'P', 'U', 'T', ' ')) {
- r->method = NGX_HTTP_PUT;
- break;
- }
-
- break;
-
- case 4:
- if (m[1] == 'O') {
-
- if (ngx_str3Ocmp(m, 'P', 'O', 'S', 'T')) {
- r->method = NGX_HTTP_POST;
- break;
- }
-
- if (ngx_str3Ocmp(m, 'C', 'O', 'P', 'Y')) {
- r->method = NGX_HTTP_COPY;
- break;
- }
-
- if (ngx_str3Ocmp(m, 'M', 'O', 'V', 'E')) {
- r->method = NGX_HTTP_MOVE;
- break;
- }
-
- if (ngx_str3Ocmp(m, 'L', 'O', 'C', 'K')) {
- r->method = NGX_HTTP_LOCK;
- break;
- }
-
- } else {
-
- if (ngx_str4cmp(m, 'H', 'E', 'A', 'D')) {
- r->method = NGX_HTTP_HEAD;
- break;
- }
- }
-
- break;
-
- case 5:
- if (ngx_str5cmp(m, 'M', 'K', 'C', 'O', 'L')) {
- r->method = NGX_HTTP_MKCOL;
- break;
- }
-
- if (ngx_str5cmp(m, 'P', 'A', 'T', 'C', 'H')) {
- r->method = NGX_HTTP_PATCH;
- break;
- }
-
- if (ngx_str5cmp(m, 'T', 'R', 'A', 'C', 'E')) {
- r->method = NGX_HTTP_TRACE;
- break;
- }
-
- break;
-
- case 6:
- if (ngx_str6cmp(m, 'D', 'E', 'L', 'E', 'T', 'E')) {
- r->method = NGX_HTTP_DELETE;
- break;
- }
-
- if (ngx_str6cmp(m, 'U', 'N', 'L', 'O', 'C', 'K')) {
- r->method = NGX_HTTP_UNLOCK;
- break;
- }
-
- break;
-
- case 7:
- if (ngx_str7_cmp(m, 'O', 'P', 'T', 'I', 'O', 'N', 'S', ' '))
- {
- r->method = NGX_HTTP_OPTIONS;
- }
-
- break;
-
- case 8:
- if (ngx_str8cmp(m, 'P', 'R', 'O', 'P', 'F', 'I', 'N', 'D'))
- {
- r->method = NGX_HTTP_PROPFIND;
- }
-
- break;
-
- case 9:
- if (ngx_str9cmp(m,
- 'P', 'R', 'O', 'P', 'P', 'A', 'T', 'C', 'H'))
- {
- r->method = NGX_HTTP_PROPPATCH;
- }
-
- break;
- }
-
- state = sw_spaces_before_uri;
- break;
- }
-
- if ((ch < 'A' || ch > 'Z') && ch != '_' && ch != '-') {
- return NGX_HTTP_PARSE_INVALID_METHOD;
- }
-
- break;
-
- /* space* before URI */
- case sw_spaces_before_uri:
-
- if (ch == '/') {
- r->uri_start = p;
- state = sw_after_slash_in_uri;
- break;
- }
-
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'z') {
- r->schema_start = p;
- state = sw_schema;
- break;
- }
-
- switch (ch) {
- case ' ':
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- case sw_schema:
-
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'z') {
- break;
- }
-
- switch (ch) {
- case ':':
- r->schema_end = p;
- state = sw_schema_slash;
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- case sw_schema_slash:
- switch (ch) {
- case '/':
- state = sw_schema_slash_slash;
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- case sw_schema_slash_slash:
- switch (ch) {
- case '/':
- state = sw_host_start;
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- case sw_host_start:
-
- r->host_start = p;
-
- if (ch == '[') {
- state = sw_host_ip_literal;
- break;
- }
-
- state = sw_host;
-
- /* fall through */
-
- case sw_host:
-
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'z') {
- break;
- }
-
- if ((ch >= '0' && ch <= '9') || ch == '.' || ch == '-') {
- break;
- }
-
- /* fall through */
-
- case sw_host_end:
-
- r->host_end = p;
-
- switch (ch) {
- case ':':
- state = sw_port;
- break;
- case '/':
- r->uri_start = p;
- state = sw_after_slash_in_uri;
- break;
- case ' ':
- /*
- * use single "/" from request line to preserve pointers,
- * if request line will be copied to large client buffer
- */
- r->uri_start = r->schema_end + 1;
- r->uri_end = r->schema_end + 2;
- state = sw_host_http_09;
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- case sw_host_ip_literal:
-
- if (ch >= '0' && ch <= '9') {
- break;
- }
-
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'z') {
- break;
- }
-
- switch (ch) {
- case ':':
- break;
- case ']':
- state = sw_host_end;
- break;
- case '-':
- case '.':
- case '_':
- case '~':
- /* unreserved */
- break;
- case '!':
- case '$':
- case '&':
- case '\'':
- case '(':
- case ')':
- case '*':
- case '+':
- case ',':
- case ';':
- case '=':
- /* sub-delims */
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- case sw_port:
- if (ch >= '0' && ch <= '9') {
- break;
- }
-
- switch (ch) {
- case '/':
- r->port_end = p;
- r->uri_start = p;
- state = sw_after_slash_in_uri;
- break;
- case ' ':
- r->port_end = p;
- /*
- * use single "/" from request line to preserve pointers,
- * if request line will be copied to large client buffer
- */
- r->uri_start = r->schema_end + 1;
- r->uri_end = r->schema_end + 2;
- state = sw_host_http_09;
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- /* space+ after "http://host[:port] " */
- case sw_host_http_09:
- switch (ch) {
- case ' ':
- break;
- case CR:
- r->http_minor = 9;
- state = sw_almost_done;
- break;
- case LF:
- r->http_minor = 9;
- goto done;
- case 'H':
- r->http_protocol.data = p;
- state = sw_http_H;
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
-
- /* check "/.", "//", "%", and "\" (Win32) in URI */
- case sw_after_slash_in_uri:
-
- if (usual[ch >> 5] & (1U << (ch & 0x1f))) {
- state = sw_check_uri;
- break;
- }
-
- switch (ch) {
- case ' ':
- r->uri_end = p;
- state = sw_check_uri_http_09;
- break;
- case CR:
- r->uri_end = p;
- r->http_minor = 9;
- state = sw_almost_done;
- break;
- case LF:
- r->uri_end = p;
- r->http_minor = 9;
- goto done;
- case '.':
- r->complex_uri = 1;
- state = sw_uri;
- break;
- case '%':
- r->quoted_uri = 1;
- state = sw_uri;
- break;
- case '/':
- r->complex_uri = 1;
- state = sw_uri;
- break;
-#if (NGX_WIN32)
- case '\\':
- r->complex_uri = 1;
- state = sw_uri;
- break;
-#endif
- case '?':
- r->args_start = p + 1;
- state = sw_uri;
- break;
- case '#':
- r->complex_uri = 1;
- state = sw_uri;
- break;
- case '+':
- r->plus_in_uri = 1;
- break;
- case '\0':
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- default:
- state = sw_check_uri;
- break;
- }
- break;
-
- /* check "/", "%" and "\" (Win32) in URI */
- case sw_check_uri:
-
- if (usual[ch >> 5] & (1U << (ch & 0x1f))) {
- break;
- }
-
- switch (ch) {
- case '/':
-#if (NGX_WIN32)
- if (r->uri_ext == p) {
- r->complex_uri = 1;
- state = sw_uri;
- break;
- }
-#endif
- r->uri_ext = NULL;
- state = sw_after_slash_in_uri;
- break;
- case '.':
- r->uri_ext = p + 1;
- break;
- case ' ':
- r->uri_end = p;
- state = sw_check_uri_http_09;
- break;
- case CR:
- r->uri_end = p;
- r->http_minor = 9;
- state = sw_almost_done;
- break;
- case LF:
- r->uri_end = p;
- r->http_minor = 9;
- goto done;
-#if (NGX_WIN32)
- case '\\':
- r->complex_uri = 1;
- state = sw_after_slash_in_uri;
- break;
-#endif
- case '%':
- r->quoted_uri = 1;
- state = sw_uri;
- break;
- case '?':
- r->args_start = p + 1;
- state = sw_uri;
- break;
- case '#':
- r->complex_uri = 1;
- state = sw_uri;
- break;
- case '+':
- r->plus_in_uri = 1;
- break;
- case '\0':
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- /* space+ after URI */
- case sw_check_uri_http_09:
- switch (ch) {
- case ' ':
- break;
- case CR:
- r->http_minor = 9;
- state = sw_almost_done;
- break;
- case LF:
- r->http_minor = 9;
- goto done;
- case 'H':
- r->http_protocol.data = p;
- state = sw_http_H;
- break;
- default:
- r->space_in_uri = 1;
- state = sw_check_uri;
- p--;
- break;
- }
- break;
-
-
- /* URI */
- case sw_uri:
-
- if (usual[ch >> 5] & (1U << (ch & 0x1f))) {
- break;
- }
-
- switch (ch) {
- case ' ':
- r->uri_end = p;
- state = sw_http_09;
- break;
- case CR:
- r->uri_end = p;
- r->http_minor = 9;
- state = sw_almost_done;
- break;
- case LF:
- r->uri_end = p;
- r->http_minor = 9;
- goto done;
- case '#':
- r->complex_uri = 1;
- break;
- case '\0':
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- /* space+ after URI */
- case sw_http_09:
- switch (ch) {
- case ' ':
- break;
- case CR:
- r->http_minor = 9;
- state = sw_almost_done;
- break;
- case LF:
- r->http_minor = 9;
- goto done;
- case 'H':
- r->http_protocol.data = p;
- state = sw_http_H;
- break;
- default:
- r->space_in_uri = 1;
- state = sw_uri;
- p--;
- break;
- }
- break;
-
- case sw_http_H:
- switch (ch) {
- case 'T':
- state = sw_http_HT;
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- case sw_http_HT:
- switch (ch) {
- case 'T':
- state = sw_http_HTT;
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- case sw_http_HTT:
- switch (ch) {
- case 'P':
- state = sw_http_HTTP;
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- case sw_http_HTTP:
- switch (ch) {
- case '/':
- state = sw_first_major_digit;
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- /* first digit of major HTTP version */
- case sw_first_major_digit:
- if (ch < '1' || ch > '9') {
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
-
- r->http_major = ch - '0';
- state = sw_major_digit;
- break;
-
- /* major HTTP version or dot */
- case sw_major_digit:
- if (ch == '.') {
- state = sw_first_minor_digit;
- break;
- }
-
- if (ch < '0' || ch > '9') {
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
-
- if (r->http_major > 99) {
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
-
- r->http_major = r->http_major * 10 + ch - '0';
- break;
-
- /* first digit of minor HTTP version */
- case sw_first_minor_digit:
- if (ch < '0' || ch > '9') {
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
-
- r->http_minor = ch - '0';
- state = sw_minor_digit;
- break;
-
- /* minor HTTP version or end of request line */
- case sw_minor_digit:
- if (ch == CR) {
- state = sw_almost_done;
- break;
- }
-
- if (ch == LF) {
- goto done;
- }
-
- if (ch == ' ') {
- state = sw_spaces_after_digit;
- break;
- }
-
- if (ch < '0' || ch > '9') {
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
-
- if (r->http_minor > 99) {
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
-
- r->http_minor = r->http_minor * 10 + ch - '0';
- break;
-
- case sw_spaces_after_digit:
- switch (ch) {
- case ' ':
- break;
- case CR:
- state = sw_almost_done;
- break;
- case LF:
- goto done;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- break;
-
- /* end of request line */
- case sw_almost_done:
- r->request_end = p - 1;
- switch (ch) {
- case LF:
- goto done;
- default:
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- }
- }
-
- b->pos = p;
- r->state = state;
-
- return NGX_AGAIN;
-
-done:
-
- b->pos = p + 1;
-
- if (r->request_end == NULL) {
- r->request_end = p;
- }
-
- r->http_version = r->http_major * 1000 + r->http_minor;
- r->state = sw_start;
-
- if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
- return NGX_HTTP_PARSE_INVALID_09_METHOD;
- }
-
- return NGX_OK;
-}
-
-
-ngx_int_t
-ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b,
- ngx_uint_t allow_underscores)
-{
- u_char c, ch, *p;
- ngx_uint_t hash, i;
- enum {
- sw_start = 0,
- sw_name,
- sw_space_before_value,
- sw_value,
- sw_space_after_value,
- sw_ignore_line,
- sw_almost_done,
- sw_header_almost_done
- } state;
-
- /* the last '\0' is not needed because string is zero terminated */
-
- static u_char lowcase[] =
- "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
- "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0"
- "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
- "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
- "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
- "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
- "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
- "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
-
- state = r->state;
- hash = r->header_hash;
- i = r->lowcase_index;
-
- for (p = b->pos; p < b->last; p++) {
- ch = *p;
-
- switch (state) {
-
- /* first char */
- case sw_start:
- r->header_name_start = p;
- r->invalid_header = 0;
-
- switch (ch) {
- case CR:
- r->header_end = p;
- state = sw_header_almost_done;
- break;
- case LF:
- r->header_end = p;
- goto header_done;
- default:
- state = sw_name;
-
- c = lowcase[ch];
-
- if (c) {
- hash = ngx_hash(0, c);
- r->lowcase_header[0] = c;
- i = 1;
- break;
- }
-
- if (ch == '_') {
- if (allow_underscores) {
- hash = ngx_hash(0, ch);
- r->lowcase_header[0] = ch;
- i = 1;
-
- } else {
- r->invalid_header = 1;
- }
-
- break;
- }
-
- if (ch == '\0') {
- return NGX_HTTP_PARSE_INVALID_HEADER;
- }
-
- r->invalid_header = 1;
-
- break;
-
- }
- break;
-
- /* header name */
- case sw_name:
- c = lowcase[ch];
-
- if (c) {
- hash = ngx_hash(hash, c);
- r->lowcase_header[i++] = c;
- i &= (NGX_HTTP_LC_HEADER_LEN - 1);
- break;
- }
-
- if (ch == '_') {
- if (allow_underscores) {
- hash = ngx_hash(hash, ch);
- r->lowcase_header[i++] = ch;
- i &= (NGX_HTTP_LC_HEADER_LEN - 1);
-
- } else {
- r->invalid_header = 1;
- }
-
- break;
- }
-
- if (ch == ':') {
- r->header_name_end = p;
- state = sw_space_before_value;
- break;
- }
-
- if (ch == CR) {
- r->header_name_end = p;
- r->header_start = p;
- r->header_end = p;
- state = sw_almost_done;
- break;
- }
-
- if (ch == LF) {
- r->header_name_end = p;
- r->header_start = p;
- r->header_end = p;
- goto done;
- }
-
- /* IIS may send the duplicate "HTTP/1.1 ..." lines */
- if (ch == '/'
- && r->upstream
- && p - r->header_name_start == 4
- && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
- {
- state = sw_ignore_line;
- break;
- }
-
- if (ch == '\0') {
- return NGX_HTTP_PARSE_INVALID_HEADER;
- }
-
- r->invalid_header = 1;
-
- break;
-
- /* space* before header value */
- case sw_space_before_value:
- switch (ch) {
- case ' ':
- break;
- case CR:
- r->header_start = p;
- r->header_end = p;
- state = sw_almost_done;
- break;
- case LF:
- r->header_start = p;
- r->header_end = p;
- goto done;
- case '\0':
- return NGX_HTTP_PARSE_INVALID_HEADER;
- default:
- r->header_start = p;
- state = sw_value;
- break;
- }
- break;
-
- /* header value */
- case sw_value:
- switch (ch) {
- case ' ':
- r->header_end = p;
- state = sw_space_after_value;
- break;
- case CR:
- r->header_end = p;
- state = sw_almost_done;
- break;
- case LF:
- r->header_end = p;
- goto done;
- case '\0':
- return NGX_HTTP_PARSE_INVALID_HEADER;
- }
- break;
-
- /* space* before end of header line */
- case sw_space_after_value:
- switch (ch) {
- case ' ':
- break;
- case CR:
- state = sw_almost_done;
- break;
- case LF:
- goto done;
- case '\0':
- return NGX_HTTP_PARSE_INVALID_HEADER;
- default:
- state = sw_value;
- break;
- }
- break;
-
- /* ignore header line */
- case sw_ignore_line:
- switch (ch) {
- case LF:
- state = sw_start;
- break;
- default:
- break;
- }
- break;
-
- /* end of header line */
- case sw_almost_done:
- switch (ch) {
- case LF:
- goto done;
- case CR:
- break;
- default:
- return NGX_HTTP_PARSE_INVALID_HEADER;
- }
- break;
-
- /* end of header */
- case sw_header_almost_done:
- switch (ch) {
- case LF:
- goto header_done;
- default:
- return NGX_HTTP_PARSE_INVALID_HEADER;
- }
- }
- }
-
- b->pos = p;
- r->state = state;
- r->header_hash = hash;
- r->lowcase_index = i;
-
- return NGX_AGAIN;
-
-done:
-
- b->pos = p + 1;
- r->state = sw_start;
- r->header_hash = hash;
- r->lowcase_index = i;
-
- return NGX_OK;
-
-header_done:
-
- b->pos = p + 1;
- r->state = sw_start;
-
- return NGX_HTTP_PARSE_HEADER_DONE;
-}
-
-
-ngx_int_t
-ngx_http_parse_uri(ngx_http_request_t *r)
-{
- u_char *p, ch;
- enum {
- sw_start = 0,
- sw_after_slash_in_uri,
- sw_check_uri,
- sw_uri
- } state;
-
- state = sw_start;
-
- for (p = r->uri_start; p != r->uri_end; p++) {
-
- ch = *p;
-
- switch (state) {
-
- case sw_start:
-
- if (ch != '/') {
- return NGX_ERROR;
- }
-
- state = sw_after_slash_in_uri;
- break;
-
- /* check "/.", "//", "%", and "\" (Win32) in URI */
- case sw_after_slash_in_uri:
-
- if (usual[ch >> 5] & (1U << (ch & 0x1f))) {
- state = sw_check_uri;
- break;
- }
-
- switch (ch) {
- case ' ':
- r->space_in_uri = 1;
- state = sw_check_uri;
- break;
- case '.':
- r->complex_uri = 1;
- state = sw_uri;
- break;
- case '%':
- r->quoted_uri = 1;
- state = sw_uri;
- break;
- case '/':
- r->complex_uri = 1;
- state = sw_uri;
- break;
-#if (NGX_WIN32)
- case '\\':
- r->complex_uri = 1;
- state = sw_uri;
- break;
-#endif
- case '?':
- r->args_start = p + 1;
- state = sw_uri;
- break;
- case '#':
- r->complex_uri = 1;
- state = sw_uri;
- break;
- case '+':
- r->plus_in_uri = 1;
- break;
- default:
- state = sw_check_uri;
- break;
- }
- break;
-
- /* check "/", "%" and "\" (Win32) in URI */
- case sw_check_uri:
-
- if (usual[ch >> 5] & (1U << (ch & 0x1f))) {
- break;
- }
-
- switch (ch) {
- case '/':
-#if (NGX_WIN32)
- if (r->uri_ext == p) {
- r->complex_uri = 1;
- state = sw_uri;
- break;
- }
-#endif
- r->uri_ext = NULL;
- state = sw_after_slash_in_uri;
- break;
- case '.':
- r->uri_ext = p + 1;
- break;
- case ' ':
- r->space_in_uri = 1;
- break;
-#if (NGX_WIN32)
- case '\\':
- r->complex_uri = 1;
- state = sw_after_slash_in_uri;
- break;
-#endif
- case '%':
- r->quoted_uri = 1;
- state = sw_uri;
- break;
- case '?':
- r->args_start = p + 1;
- state = sw_uri;
- break;
- case '#':
- r->complex_uri = 1;
- state = sw_uri;
- break;
- case '+':
- r->plus_in_uri = 1;
- break;
- }
- break;
-
- /* URI */
- case sw_uri:
-
- if (usual[ch >> 5] & (1U << (ch & 0x1f))) {
- break;
- }
-
- switch (ch) {
- case ' ':
- r->space_in_uri = 1;
- break;
- case '#':
- r->complex_uri = 1;
- break;
- }
- break;
- }
- }
-
- return NGX_OK;
-}
-
-
-ngx_int_t
-ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
-{
- u_char c, ch, decoded, *p, *u;
- enum {
- sw_usual = 0,
- sw_slash,
- sw_dot,
- sw_dot_dot,
- sw_quoted,
- sw_quoted_second
- } state, quoted_state;
-
-#if (NGX_SUPPRESS_WARN)
- decoded = '\0';
- quoted_state = sw_usual;
-#endif
-
- state = sw_usual;
- p = r->uri_start;
- u = r->uri.data;
- r->uri_ext = NULL;
- r->args_start = NULL;
-
- ch = *p++;
-
- while (p <= r->uri_end) {
-
- /*
- * we use "ch = *p++" inside the cycle, but this operation is safe,
- * because after the URI there is always at least one character:
- * the line feed
- */
-
- ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "s:%d in:'%Xd:%c'", state, ch, ch);
-
- switch (state) {
-
- case sw_usual:
-
- if (usual[ch >> 5] & (1U << (ch & 0x1f))) {
- *u++ = ch;
- ch = *p++;
- break;
- }
-
- switch (ch) {
-#if (NGX_WIN32)
- case '\\':
- if (u - 2 >= r->uri.data
- && *(u - 1) == '.' && *(u - 2) != '.')
- {
- u--;
- }
-
- r->uri_ext = NULL;
-
- if (p == r->uri_start + r->uri.len) {
-
- /*
- * we omit the last "\" to cause redirect because
- * the browsers do not treat "\" as "/" in relative URL path
- */
-
- break;
- }
-
- state = sw_slash;
- *u++ = '/';
- break;
-#endif
- case '/':
-#if (NGX_WIN32)
- if (u - 2 >= r->uri.data
- && *(u - 1) == '.' && *(u - 2) != '.')
- {
- u--;
- }
-#endif
- r->uri_ext = NULL;
- state = sw_slash;
- *u++ = ch;
- break;
- case '%':
- quoted_state = state;
- state = sw_quoted;
- break;
- case '?':
- r->args_start = p;
- goto args;
- case '#':
- goto done;
- case '.':
- r->uri_ext = u + 1;
- *u++ = ch;
- break;
- case '+':
- r->plus_in_uri = 1;
- /* fall through */
- default:
- *u++ = ch;
- break;
- }
-
- ch = *p++;
- break;
-
- case sw_slash:
-
- if (usual[ch >> 5] & (1U << (ch & 0x1f))) {
- state = sw_usual;
- *u++ = ch;
- ch = *p++;
- break;
- }
-
- switch (ch) {
-#if (NGX_WIN32)
- case '\\':
- break;
-#endif
- case '/':
- if (!merge_slashes) {
- *u++ = ch;
- }
- break;
- case '.':
- state = sw_dot;
- *u++ = ch;
- break;
- case '%':
- quoted_state = state;
- state = sw_quoted;
- break;
- case '?':
- r->args_start = p;
- goto args;
- case '#':
- goto done;
- case '+':
- r->plus_in_uri = 1;
- default:
- state = sw_usual;
- *u++ = ch;
- break;
- }
-
- ch = *p++;
- break;
-
- case sw_dot:
-
- if (usual[ch >> 5] & (1U << (ch & 0x1f))) {
- state = sw_usual;
- *u++ = ch;
- ch = *p++;
- break;
- }
-
- switch (ch) {
-#if (NGX_WIN32)
- case '\\':
-#endif
- case '/':
- state = sw_slash;
- u--;
- break;
- case '.':
- state = sw_dot_dot;
- *u++ = ch;
- break;
- case '%':
- quoted_state = state;
- state = sw_quoted;
- break;
- case '?':
- r->args_start = p;
- goto args;
- case '#':
- goto done;
- case '+':
- r->plus_in_uri = 1;
- default:
- state = sw_usual;
- *u++ = ch;
- break;
- }
-
- ch = *p++;
- break;
-
- case sw_dot_dot:
-
- if (usual[ch >> 5] & (1U << (ch & 0x1f))) {
- state = sw_usual;
- *u++ = ch;
- ch = *p++;
- break;
- }
-
- switch (ch) {
-#if (NGX_WIN32)
- case '\\':
-#endif
- case '/':
- state = sw_slash;
- u -= 5;
- for ( ;; ) {
- if (u < r->uri.data) {
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- if (*u == '/') {
- u++;
- break;
- }
- u--;
- }
- break;
- case '%':
- quoted_state = state;
- state = sw_quoted;
- break;
- case '?':
- r->args_start = p;
- goto args;
- case '#':
- goto done;
- case '+':
- r->plus_in_uri = 1;
- default:
- state = sw_usual;
- *u++ = ch;
- break;
- }
-
- ch = *p++;
- break;
-
- case sw_quoted:
- r->quoted_uri = 1;
-
- if (ch >= '0' && ch <= '9') {
- decoded = (u_char) (ch - '0');
- state = sw_quoted_second;
- ch = *p++;
- break;
- }
-
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'f') {
- decoded = (u_char) (c - 'a' + 10);
- state = sw_quoted_second;
- ch = *p++;
- break;
- }
-
- return NGX_HTTP_PARSE_INVALID_REQUEST;
-
- case sw_quoted_second:
- if (ch >= '0' && ch <= '9') {
- ch = (u_char) ((decoded << 4) + ch - '0');
-
- if (ch == '%' || ch == '#') {
- state = sw_usual;
- *u++ = ch;
- ch = *p++;
- break;
-
- } else if (ch == '\0') {
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
-
- state = quoted_state;
- break;
- }
-
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'f') {
- ch = (u_char) ((decoded << 4) + c - 'a' + 10);
-
- if (ch == '?') {
- state = sw_usual;
- *u++ = ch;
- ch = *p++;
- break;
-
- } else if (ch == '+') {
- r->plus_in_uri = 1;
- }
-
- state = quoted_state;
- break;
- }
-
- return NGX_HTTP_PARSE_INVALID_REQUEST;
- }
- }
-
-done:
-
- r->uri.len = u - r->uri.data;
-
- if (r->uri_ext) {
- r->exten.len = u - r->uri_ext;
- r->exten.data = r->uri_ext;
- }
-
- r->uri_ext = NULL;
-
- return NGX_OK;
-
-args:
-
- while (p < r->uri_end) {
- if (*p++ != '#') {
- continue;
- }
-
- r->args.len = p - 1 - r->args_start;
- r->args.data = r->args_start;
- r->args_start = NULL;
-
- break;
- }
-
- r->uri.len = u - r->uri.data;
-
- if (r->uri_ext) {
- r->exten.len = u - r->uri_ext;
- r->exten.data = r->uri_ext;
- }
-
- r->uri_ext = NULL;
-
- return NGX_OK;
-}
-
-
-ngx_int_t
-ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
- ngx_http_status_t *status)
-{
- u_char ch;
- u_char *p;
- enum {
- sw_start = 0,
- sw_H,
- sw_HT,
- sw_HTT,
- sw_HTTP,
- sw_first_major_digit,
- sw_major_digit,
- sw_first_minor_digit,
- sw_minor_digit,
- sw_status,
- sw_space_after_status,
- sw_status_text,
- sw_almost_done
- } state;
-
- state = r->state;
-
- for (p = b->pos; p < b->last; p++) {
- ch = *p;
-
- switch (state) {
-
- /* "HTTP/" */
- case sw_start:
- switch (ch) {
- case 'H':
- state = sw_H;
- break;
- default:
- return NGX_ERROR;
- }
- break;
-
- case sw_H:
- switch (ch) {
- case 'T':
- state = sw_HT;
- break;
- default:
- return NGX_ERROR;
- }
- break;
-
- case sw_HT:
- switch (ch) {
- case 'T':
- state = sw_HTT;
- break;
- default:
- return NGX_ERROR;
- }
- break;
-
- case sw_HTT:
- switch (ch) {
- case 'P':
- state = sw_HTTP;
- break;
- default:
- return NGX_ERROR;
- }
- break;
-
- case sw_HTTP:
- switch (ch) {
- case '/':
- state = sw_first_major_digit;
- break;
- default:
- return NGX_ERROR;
- }
- break;
-
- /* the first digit of major HTTP version */
- case sw_first_major_digit:
- if (ch < '1' || ch > '9') {
- return NGX_ERROR;
- }
-
- r->http_major = ch - '0';
- state = sw_major_digit;
- break;
-
- /* the major HTTP version or dot */
- case sw_major_digit:
- if (ch == '.') {
- state = sw_first_minor_digit;
- break;
- }
-
- if (ch < '0' || ch > '9') {
- return NGX_ERROR;
- }
-
- if (r->http_major > 99) {
- return NGX_ERROR;
- }
-
- r->http_major = r->http_major * 10 + ch - '0';
- break;
-
- /* the first digit of minor HTTP version */
- case sw_first_minor_digit:
- if (ch < '0' || ch > '9') {
- return NGX_ERROR;
- }
-
- r->http_minor = ch - '0';
- state = sw_minor_digit;
- break;
-
- /* the minor HTTP version or the end of the request line */
- case sw_minor_digit:
- if (ch == ' ') {
- state = sw_status;
- break;
- }
-
- if (ch < '0' || ch > '9') {
- return NGX_ERROR;
- }
-
- if (r->http_minor > 99) {
- return NGX_ERROR;
- }
-
- r->http_minor = r->http_minor * 10 + ch - '0';
- break;
-
- /* HTTP status code */
- case sw_status:
- if (ch == ' ') {
- break;
- }
-
- if (ch < '0' || ch > '9') {
- return NGX_ERROR;
- }
-
- status->code = status->code * 10 + ch - '0';
-
- if (++status->count == 3) {
- state = sw_space_after_status;
- status->start = p - 2;
- }
-
- break;
-
- /* space or end of line */
- case sw_space_after_status:
- switch (ch) {
- case ' ':
- state = sw_status_text;
- break;
- case '.': /* IIS may send 403.1, 403.2, etc */
- state = sw_status_text;
- break;
- case CR:
- state = sw_almost_done;
- break;
- case LF:
- goto done;
- default:
- return NGX_ERROR;
- }
- break;
-
- /* any text until end of line */
- case sw_status_text:
- switch (ch) {
- case CR:
- state = sw_almost_done;
-
- break;
- case LF:
- goto done;
- }
- break;
-
- /* end of status line */
- case sw_almost_done:
- status->end = p - 1;
- switch (ch) {
- case LF:
- goto done;
- default:
- return NGX_ERROR;
- }
- }
- }
-
- b->pos = p;
- r->state = state;
-
- return NGX_AGAIN;
-
-done:
-
- b->pos = p + 1;
-
- if (status->end == NULL) {
- status->end = p;
- }
-
- status->http_version = r->http_major * 1000 + r->http_minor;
- r->state = sw_start;
-
- return NGX_OK;
-}
-
-
-ngx_int_t
-ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
- ngx_str_t *args, ngx_uint_t *flags)
-{
- u_char ch, *p, *src, *dst;
- size_t len;
- ngx_uint_t quoted;
-
- len = uri->len;
- p = uri->data;
- quoted = 0;
-
- if (len == 0 || p[0] == '?') {
- goto unsafe;
- }
-
- if (p[0] == '.' && len > 1 && p[1] == '.'
- && (len == 2 || ngx_path_separator(p[2])))
- {
- goto unsafe;
- }
-
- for ( /* void */ ; len; len--) {
-
- ch = *p++;
-
- if (ch == '%') {
- quoted = 1;
- continue;
- }
-
- if (usual[ch >> 5] & (1U << (ch & 0x1f))) {
- continue;
- }
-
- if (ch == '?') {
- args->len = len - 1;
- args->data = p;
- uri->len -= len;
-
- break;
- }
-
- if (ch == '\0') {
- goto unsafe;
- }
-
- if (ngx_path_separator(ch) && len > 2) {
-
- /* detect "/../" and "/.." */
-
- if (p[0] == '.' && p[1] == '.'
- && (len == 3 || ngx_path_separator(p[2])))
- {
- goto unsafe;
- }
- }
- }
-
- if (quoted) {
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "escaped URI: \"%V\"", uri);
-
- src = uri->data;
-
- dst = ngx_pnalloc(r->pool, uri->len);
- if (dst == NULL) {
- return NGX_ERROR;
- }
-
- uri->data = dst;
-
- ngx_unescape_uri(&dst, &src, uri->len, 0);
-
- uri->len = dst - uri->data;
-
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "unescaped URI: \"%V\"", uri);
-
- len = uri->len;
- p = uri->data;
-
- if (p[0] == '.' && len > 1 && p[1] == '.'
- && (len == 2 || ngx_path_separator(p[2])))
- {
- goto unsafe;
- }
-
- for ( /* void */ ; len; len--) {
-
- ch = *p++;
-
- if (ch == '\0') {
- goto unsafe;
- }
-
- if (ngx_path_separator(ch) && len > 2) {
-
- /* detect "/../" and "/.." */
-
- if (p[0] == '.' && p[1] == '.'
- && (len == 3 || ngx_path_separator(p[2])))
- {
- goto unsafe;
- }
- }
- }
- }
-
- return NGX_OK;
-
-unsafe:
-
- if (*flags & NGX_HTTP_LOG_UNSAFE) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "unsafe URI \"%V\" was detected", uri);
- }
-
- return NGX_ERROR;
-}
-
-
-ngx_int_t
-ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
- ngx_str_t *value)
-{
- ngx_uint_t i;
- u_char *start, *last, *end, ch;
- ngx_table_elt_t **h;
-
- h = headers->elts;
-
- for (i = 0; i < headers->nelts; i++) {
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
- "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
-
- if (name->len > h[i]->value.len) {
- continue;
- }
-
- start = h[i]->value.data;
- end = h[i]->value.data + h[i]->value.len;
-
- while (start < end) {
-
- if (ngx_strncasecmp(start, name->data, name->len) != 0) {
- goto skip;
- }
-
- for (start += name->len; start < end && *start == ' '; start++) {
- /* void */
- }
-
- if (value == NULL) {
- if (start == end || *start == ',') {
- return i;
- }
-
- goto skip;
- }
-
- if (start == end || *start++ != '=') {
- /* the invalid header value */
- goto skip;
- }
-
- while (start < end && *start == ' ') { start++; }
-
- for (last = start; last < end && *last != ';'; last++) {
- /* void */
- }
-
- value->len = last - start;
- value->data = start;
-
- return i;
-
- skip:
-
- while (start < end) {
- ch = *start++;
- if (ch == ';' || ch == ',') {
- break;
- }
- }
-
- while (start < end && *start == ' ') { start++; }
- }
- }
-
- return NGX_DECLINED;
-}
-
-
-ngx_int_t
-ngx_http_parse_set_cookie_lines(ngx_array_t *headers, ngx_str_t *name,
- ngx_str_t *value)
-{
- ngx_uint_t i;
- u_char *start, *last, *end;
- ngx_table_elt_t **h;
-
- h = headers->elts;
-
- for (i = 0; i < headers->nelts; i++) {
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
- "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
-
- if (name->len >= h[i]->value.len) {
- continue;
- }
-
- start = h[i]->value.data;
- end = h[i]->value.data + h[i]->value.len;
-
- if (ngx_strncasecmp(start, name->data, name->len) != 0) {
- continue;
- }
-
- for (start += name->len; start < end && *start == ' '; start++) {
- /* void */
- }
-
- if (start == end || *start++ != '=') {
- /* the invalid header value */
- continue;
- }
-
- while (start < end && *start == ' ') { start++; }
-
- for (last = start; last < end && *last != ';'; last++) {
- /* void */
- }
-
- value->len = last - start;
- value->data = start;
-
- return i;
- }
-
- return NGX_DECLINED;
-}
-
-
-ngx_int_t
-ngx_http_arg(ngx_http_request_t *r, u_char *name, size_t len, ngx_str_t *value)
-{
- u_char *p, *last;
-
- if (r->args.len == 0) {
- return NGX_DECLINED;
- }
-
- p = r->args.data;
- last = p + r->args.len;
-
- for ( /* void */ ; p < last; p++) {
-
- /* we need '=' after name, so drop one char from last */
-
- p = ngx_strlcasestrn(p, last - 1, name, len - 1);
-
- if (p == NULL) {
- return NGX_DECLINED;
- }
-
- if ((p == r->args.data || *(p - 1) == '&') && *(p + len) == '=') {
-
- value->data = p + len + 1;
-
- p = ngx_strlchr(p, last, '&');
-
- if (p == NULL) {
- p = r->args.data + r->args.len;
- }
-
- value->len = p - value->data;
-
- return NGX_OK;
- }
- }
-
- return NGX_DECLINED;
-}
-
-
-void
-ngx_http_split_args(ngx_http_request_t *r, ngx_str_t *uri, ngx_str_t *args)
-{
- u_char *p, *last;
-
- last = uri->data + uri->len;
-
- p = ngx_strlchr(uri->data, last, '?');
-
- if (p) {
- uri->len = p - uri->data;
- p++;
- args->len = last - p;
- args->data = p;
-
- } else {
- args->len = 0;
- }
-}
-
-
-ngx_int_t
-ngx_http_parse_chunked(ngx_http_request_t *r, ngx_buf_t *b,
- ngx_http_chunked_t *ctx)
-{
- u_char *pos, ch, c;
- ngx_int_t rc;
- enum {
- sw_chunk_start = 0,
- sw_chunk_size,
- sw_chunk_extension,
- sw_chunk_extension_almost_done,
- sw_chunk_data,
- sw_after_data,
- sw_after_data_almost_done,
- sw_last_chunk_extension,
- sw_last_chunk_extension_almost_done,
- sw_trailer,
- sw_trailer_almost_done,
- sw_trailer_header,
- sw_trailer_header_almost_done
- } state;
-
- state = ctx->state;
-
- if (state == sw_chunk_data && ctx->size == 0) {
- state = sw_after_data;
- }
-
- rc = NGX_AGAIN;
-
- for (pos = b->pos; pos < b->last; pos++) {
-
- ch = *pos;
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http chunked byte: %02Xd s:%d", ch, state);
-
- switch (state) {
-
- case sw_chunk_start:
- if (ch >= '0' && ch <= '9') {
- state = sw_chunk_size;
- ctx->size = ch - '0';
- break;
- }
-
- c = (u_char) (ch | 0x20);
-
- if (c >= 'a' && c <= 'f') {
- state = sw_chunk_size;
- ctx->size = c - 'a' + 10;
- break;
- }
-
- goto invalid;
-
- case sw_chunk_size:
- if (ctx->size > NGX_MAX_OFF_T_VALUE / 16) {
- goto invalid;
- }
-
- if (ch >= '0' && ch <= '9') {
- ctx->size = ctx->size * 16 + (ch - '0');
- break;
- }
-
- c = (u_char) (ch | 0x20);
-
- if (c >= 'a' && c <= 'f') {
- ctx->size = ctx->size * 16 + (c - 'a' + 10);
- break;
- }
-
- if (ctx->size == 0) {
-
- switch (ch) {
- case CR:
- state = sw_last_chunk_extension_almost_done;
- break;
- case LF:
- state = sw_trailer;
- break;
- case ';':
- case ' ':
- case '\t':
- state = sw_last_chunk_extension;
- break;
- default:
- goto invalid;
- }
-
- break;
- }
-
- switch (ch) {
- case CR:
- state = sw_chunk_extension_almost_done;
- break;
- case LF:
- state = sw_chunk_data;
- break;
- case ';':
- case ' ':
- case '\t':
- state = sw_chunk_extension;
- break;
- default:
- goto invalid;
- }
-
- break;
-
- case sw_chunk_extension:
- switch (ch) {
- case CR:
- state = sw_chunk_extension_almost_done;
- break;
- case LF:
- state = sw_chunk_data;
- }
- break;
-
- case sw_chunk_extension_almost_done:
- if (ch == LF) {
- state = sw_chunk_data;
- break;
- }
- goto invalid;
-
- case sw_chunk_data:
- rc = NGX_OK;
- goto data;
-
- case sw_after_data:
- switch (ch) {
- case CR:
- state = sw_after_data_almost_done;
- break;
- case LF:
- state = sw_chunk_start;
- }
- break;
-
- case sw_after_data_almost_done:
- if (ch == LF) {
- state = sw_chunk_start;
- break;
- }
- goto invalid;
-
- case sw_last_chunk_extension:
- switch (ch) {
- case CR:
- state = sw_last_chunk_extension_almost_done;
- break;
- case LF:
- state = sw_trailer;
- }
- break;
-
- case sw_last_chunk_extension_almost_done:
- if (ch == LF) {
- state = sw_trailer;
- break;
- }
- goto invalid;
-
- case sw_trailer:
- switch (ch) {
- case CR:
- state = sw_trailer_almost_done;
- break;
- case LF:
- goto done;
- default:
- state = sw_trailer_header;
- }
- break;
-
- case sw_trailer_almost_done:
- if (ch == LF) {
- goto done;
- }
- goto invalid;
-
- case sw_trailer_header:
- switch (ch) {
- case CR:
- state = sw_trailer_header_almost_done;
- break;
- case LF:
- state = sw_trailer;
- }
- break;
-
- case sw_trailer_header_almost_done:
- if (ch == LF) {
- state = sw_trailer;
- break;
- }
- goto invalid;
-
- }
- }
-
-data:
-
- ctx->state = state;
- b->pos = pos;
-
- if (ctx->size > NGX_MAX_OFF_T_VALUE - 5) {
- goto invalid;
- }
-
- switch (state) {
-
- case sw_chunk_start:
- ctx->length = 3 /* "0" LF LF */;
- break;
- case sw_chunk_size:
- ctx->length = 1 /* LF */
- + (ctx->size ? ctx->size + 4 /* LF "0" LF LF */
- : 1 /* LF */);
- break;
- case sw_chunk_extension:
- case sw_chunk_extension_almost_done:
- ctx->length = 1 /* LF */ + ctx->size + 4 /* LF "0" LF LF */;
- break;
- case sw_chunk_data:
- ctx->length = ctx->size + 4 /* LF "0" LF LF */;
- break;
- case sw_after_data:
- case sw_after_data_almost_done:
- ctx->length = 4 /* LF "0" LF LF */;
- break;
- case sw_last_chunk_extension:
- case sw_last_chunk_extension_almost_done:
- ctx->length = 2 /* LF LF */;
- break;
- case sw_trailer:
- case sw_trailer_almost_done:
- ctx->length = 1 /* LF */;
- break;
- case sw_trailer_header:
- case sw_trailer_header_almost_done:
- ctx->length = 2 /* LF LF */;
- break;
-
- }
-
- return rc;
-
-done:
-
- ctx->state = 0;
- b->pos = pos + 1;
-
- return NGX_DONE;
-
-invalid:
-
- return NGX_ERROR;
-}