2002-08-16 01:20:26 +08:00
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2004-09-28 16:34:51 +08:00
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/*
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* Copyright (C) 2002-2004 Igor Sysoev
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*/
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2002-08-16 01:20:26 +08:00
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#include <ngx_config.h>
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2002-08-30 00:59:54 +08:00
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#include <ngx_core.h>
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2002-08-16 01:20:26 +08:00
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#include <ngx_http.h>
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2004-09-07 23:29:22 +08:00
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2004-09-21 13:38:28 +08:00
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ngx_int_t ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
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2002-08-16 01:20:26 +08:00
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{
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2004-04-14 13:57:36 +08:00
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u_char ch, *p, *m;
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2002-08-16 01:20:26 +08:00
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enum {
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2002-08-30 00:59:54 +08:00
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sw_start = 0,
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2004-04-14 13:57:36 +08:00
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sw_method,
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2002-08-30 00:59:54 +08:00
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sw_space_after_method,
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sw_spaces_before_uri,
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2004-04-14 13:57:36 +08:00
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sw_schema,
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sw_schema_slash,
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sw_schema_slash_slash,
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sw_host,
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sw_port,
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2002-08-30 00:59:54 +08:00
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sw_after_slash_in_uri,
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sw_check_uri,
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sw_uri,
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sw_http_09,
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2003-05-20 00:39:14 +08:00
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sw_http_H,
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sw_http_HT,
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sw_http_HTT,
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sw_http_HTTP,
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2002-08-30 00:59:54 +08:00
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sw_first_major_digit,
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sw_major_digit,
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sw_first_minor_digit,
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sw_minor_digit,
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sw_almost_done,
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sw_done
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2002-12-05 00:29:40 +08:00
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} state;
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state = r->state;
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2004-09-21 13:38:28 +08:00
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p = b->pos;
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2002-08-16 01:20:26 +08:00
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2004-09-21 13:38:28 +08:00
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while (p < b->last && state < sw_done) {
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2002-08-16 01:20:26 +08:00
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ch = *p++;
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2004-09-28 16:34:51 +08:00
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/* gcc 2.95.2 and msvc 6.0 compile this switch as an jump table */
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2002-08-16 01:20:26 +08:00
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switch (state) {
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/* HTTP methods: GET, HEAD, POST */
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2002-08-30 00:59:54 +08:00
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case sw_start:
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2003-03-05 14:37:42 +08:00
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r->request_start = p - 1;
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2004-04-22 02:54:33 +08:00
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if (ch == CR || ch == LF) {
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break;
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}
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2004-04-14 13:57:36 +08:00
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if (ch < 'A' || ch > 'Z') {
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2003-05-20 00:39:14 +08:00
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return NGX_HTTP_PARSE_INVALID_METHOD;
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}
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2002-08-16 01:20:26 +08:00
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2004-04-14 13:57:36 +08:00
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state = sw_method;
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2003-05-20 00:39:14 +08:00
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break;
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2002-08-16 01:20:26 +08:00
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2004-04-14 13:57:36 +08:00
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case sw_method:
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if (ch == ' ') {
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r->method_end = p - 1;
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m = r->request_start;
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if (r->method_end - m == 3) {
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2004-09-09 23:40:48 +08:00
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if (m[0] == 'G' && m[1] == 'E' && m[2] == 'T') {
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2004-04-14 13:57:36 +08:00
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r->method = NGX_HTTP_GET;
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}
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} else if (r->method_end - m == 4) {
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2004-09-09 23:40:48 +08:00
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if (m[0] == 'P' && m[1] == 'O'
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&& m[2] == 'T' && m[3] == 'T')
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2004-04-14 13:57:36 +08:00
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{
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r->method = NGX_HTTP_POST;
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2004-09-09 23:40:48 +08:00
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} else if (m[0] == 'H' && m[1] == 'E'
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&& m[2] == 'A' && m[3] == 'D')
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2004-04-14 13:57:36 +08:00
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{
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r->method = NGX_HTTP_HEAD;
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}
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}
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state = sw_spaces_before_uri;
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2002-08-16 01:20:26 +08:00
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break;
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2003-05-20 00:39:14 +08:00
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}
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2002-08-16 01:20:26 +08:00
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2004-04-14 13:57:36 +08:00
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if (ch < 'A' || ch > 'Z') {
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2003-05-20 00:39:14 +08:00
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return NGX_HTTP_PARSE_INVALID_METHOD;
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}
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2004-04-14 13:57:36 +08:00
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2003-05-20 00:39:14 +08:00
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break;
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2002-08-16 01:20:26 +08:00
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2004-04-14 13:57:36 +08:00
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/* single space after method */
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case sw_space_after_method:
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2003-05-20 00:39:14 +08:00
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switch (ch) {
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2004-04-14 13:57:36 +08:00
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case ' ':
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state = sw_spaces_before_uri;
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2003-05-20 00:39:14 +08:00
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break;
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default:
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return NGX_HTTP_PARSE_INVALID_METHOD;
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}
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break;
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2002-08-16 01:20:26 +08:00
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2004-04-14 13:57:36 +08:00
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/* space* before URI */
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case sw_spaces_before_uri:
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2003-05-20 00:39:14 +08:00
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switch (ch) {
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2004-04-14 13:57:36 +08:00
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case '/':
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r->uri_start = p - 1;
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state = sw_after_slash_in_uri;
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break;
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case ' ':
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2002-08-16 01:20:26 +08:00
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break;
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2003-05-20 00:39:14 +08:00
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default:
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2004-04-14 13:57:36 +08:00
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if ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z')) {
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r->schema_start = p - 1;
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state = sw_schema;
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break;
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}
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return NGX_HTTP_PARSE_INVALID_REQUEST;
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2003-05-20 00:39:14 +08:00
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}
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break;
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2002-08-16 01:20:26 +08:00
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2004-04-14 13:57:36 +08:00
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case sw_schema:
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2003-05-20 00:39:14 +08:00
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switch (ch) {
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2004-04-14 13:57:36 +08:00
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case ':':
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r->schema_end = p - 1;
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state = sw_schema_slash;
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2003-05-20 00:39:14 +08:00
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break;
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default:
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2004-04-14 13:57:36 +08:00
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if ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z')) {
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break;
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}
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return NGX_HTTP_PARSE_INVALID_REQUEST;
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2003-05-20 00:39:14 +08:00
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}
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break;
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2002-08-16 01:20:26 +08:00
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2004-04-14 13:57:36 +08:00
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case sw_schema_slash:
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2003-05-20 00:39:14 +08:00
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switch (ch) {
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2004-04-14 13:57:36 +08:00
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case '/':
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state = sw_schema_slash_slash;
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2003-05-20 00:39:14 +08:00
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break;
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default:
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2004-04-14 13:57:36 +08:00
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return NGX_HTTP_PARSE_INVALID_REQUEST;
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2003-05-20 00:39:14 +08:00
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}
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break;
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2002-08-16 01:20:26 +08:00
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2004-04-14 13:57:36 +08:00
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case sw_schema_slash_slash:
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2003-05-20 00:39:14 +08:00
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switch (ch) {
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2004-04-14 13:57:36 +08:00
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case '/':
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r->host_start = p - 1;
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state = sw_host;
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2002-08-16 01:20:26 +08:00
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break;
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default:
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2004-04-14 13:57:36 +08:00
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return NGX_HTTP_PARSE_INVALID_REQUEST;
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2002-08-16 01:20:26 +08:00
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}
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break;
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2004-04-14 13:57:36 +08:00
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case sw_host:
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2002-08-16 01:20:26 +08:00
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switch (ch) {
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2004-04-14 13:57:36 +08:00
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case ':':
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r->host_end = p - 1;
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state = sw_port;
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break;
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case '/':
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r->host_end = p - 1;
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r->uri_start = p - 1;
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state = sw_after_slash_in_uri;
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2002-08-16 01:20:26 +08:00
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break;
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default:
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2004-04-14 13:57:36 +08:00
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if ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z')
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|| (ch >= '0' && ch <= '9') || ch == '.' || ch == '-')
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{
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break;
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}
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return NGX_HTTP_PARSE_INVALID_REQUEST;
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2002-08-16 01:20:26 +08:00
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}
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break;
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2004-04-14 13:57:36 +08:00
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case sw_port:
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2002-08-16 01:20:26 +08:00
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switch (ch) {
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case '/':
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2004-04-14 13:57:36 +08:00
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r->port_end = p - 1;
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2002-08-16 01:20:26 +08:00
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r->uri_start = p - 1;
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2002-08-30 00:59:54 +08:00
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state = sw_after_slash_in_uri;
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2002-08-16 01:20:26 +08:00
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break;
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default:
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2004-04-14 13:57:36 +08:00
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if (ch < '0' && ch > '9') {
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return NGX_HTTP_PARSE_INVALID_REQUEST;
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}
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2002-08-16 01:20:26 +08:00
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break;
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}
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break;
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2003-06-02 23:24:30 +08:00
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/* check "/.", "//", and "%" in URI */
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2002-08-30 00:59:54 +08:00
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case sw_after_slash_in_uri:
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2002-08-16 01:20:26 +08:00
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switch (ch) {
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case CR:
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r->uri_end = p - 1;
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r->http_minor = 9;
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2002-08-30 00:59:54 +08:00
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state = sw_almost_done;
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2002-08-16 01:20:26 +08:00
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break;
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case LF:
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r->uri_end = p - 1;
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r->http_minor = 9;
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2002-08-30 00:59:54 +08:00
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state = sw_done;
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2002-08-16 01:20:26 +08:00
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break;
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case ' ':
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r->uri_end = p - 1;
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2002-08-30 00:59:54 +08:00
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state = sw_http_09;
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2002-08-16 01:20:26 +08:00
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break;
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case '.':
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2003-06-02 23:24:30 +08:00
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case '%':
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2002-08-16 01:20:26 +08:00
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r->complex_uri = 1;
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2002-08-30 00:59:54 +08:00
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state = sw_uri;
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2002-08-16 01:20:26 +08:00
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break;
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case '/':
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r->complex_uri = 1;
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break;
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case '?':
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r->args_start = p;
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2002-08-30 00:59:54 +08:00
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state = sw_uri;
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2002-08-16 01:20:26 +08:00
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break;
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default:
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2002-08-30 00:59:54 +08:00
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state = sw_check_uri;
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2002-08-16 01:20:26 +08:00
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break;
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}
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break;
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2003-06-02 23:24:30 +08:00
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/* check "/" and "%" in URI */
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2002-08-30 00:59:54 +08:00
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case sw_check_uri:
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2002-08-16 01:20:26 +08:00
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switch (ch) {
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case CR:
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r->uri_end = p - 1;
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r->http_minor = 9;
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2002-08-30 00:59:54 +08:00
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state = sw_almost_done;
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2002-08-16 01:20:26 +08:00
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break;
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case LF:
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r->uri_end = p - 1;
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r->http_minor = 9;
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2002-08-30 00:59:54 +08:00
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state = sw_done;
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2002-08-16 01:20:26 +08:00
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break;
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case ' ':
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r->uri_end = p - 1;
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2002-08-30 00:59:54 +08:00
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state = sw_http_09;
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2002-08-16 01:20:26 +08:00
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break;
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case '.':
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r->uri_ext = p;
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break;
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case '/':
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r->uri_ext = NULL;
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2002-08-30 00:59:54 +08:00
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state = sw_after_slash_in_uri;
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2002-08-16 01:20:26 +08:00
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break;
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2003-06-02 23:24:30 +08:00
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case '%':
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r->complex_uri = 1;
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state = sw_uri;
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break;
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2002-08-16 01:20:26 +08:00
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case '?':
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r->args_start = p;
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2002-08-30 00:59:54 +08:00
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state = sw_uri;
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2002-08-16 01:20:26 +08:00
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break;
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}
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break;
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/* URI */
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2002-08-30 00:59:54 +08:00
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case sw_uri:
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2002-08-16 01:20:26 +08:00
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switch (ch) {
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case CR:
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r->uri_end = p - 1;
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r->http_minor = 9;
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2002-08-30 00:59:54 +08:00
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state = sw_almost_done;
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2002-08-16 01:20:26 +08:00
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break;
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case LF:
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r->uri_end = p - 1;
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r->http_minor = 9;
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2002-08-30 00:59:54 +08:00
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state = sw_done;
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2002-08-16 01:20:26 +08:00
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break;
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case ' ':
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r->uri_end = p - 1;
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2002-08-30 00:59:54 +08:00
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state = sw_http_09;
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2002-08-16 01:20:26 +08:00
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break;
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}
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break;
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|
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/* space+ after URI */
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2002-08-30 00:59:54 +08:00
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case sw_http_09:
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2002-08-16 01:20:26 +08:00
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switch (ch) {
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case ' ':
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break;
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case CR:
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r->http_minor = 9;
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2002-08-30 00:59:54 +08:00
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state = sw_almost_done;
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2002-08-16 01:20:26 +08:00
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break;
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case LF:
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r->http_minor = 9;
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2002-08-30 00:59:54 +08:00
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state = sw_done;
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2002-08-16 01:20:26 +08:00
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break;
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case 'H':
|
2003-05-20 00:39:14 +08:00
|
|
|
state = sw_http_H;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case sw_http_H:
|
|
|
|
switch (ch) {
|
|
|
|
case 'T':
|
|
|
|
state = sw_http_HT;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
default:
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
2002-08-16 01:20:26 +08:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2003-05-20 00:39:14 +08:00
|
|
|
case sw_http_HT:
|
|
|
|
switch (ch) {
|
|
|
|
case 'T':
|
|
|
|
state = sw_http_HTT;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
2002-08-16 01:20:26 +08:00
|
|
|
}
|
2003-05-20 00:39:14 +08:00
|
|
|
break;
|
2002-08-16 01:20:26 +08:00
|
|
|
|
2003-05-20 00:39:14 +08:00
|
|
|
case sw_http_HTT:
|
|
|
|
switch (ch) {
|
|
|
|
case 'P':
|
|
|
|
state = sw_http_HTTP;
|
|
|
|
break;
|
|
|
|
default:
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
2003-05-20 00:39:14 +08:00
|
|
|
break;
|
2002-08-16 01:20:26 +08:00
|
|
|
|
2003-05-20 00:39:14 +08:00
|
|
|
case sw_http_HTTP:
|
|
|
|
switch (ch) {
|
|
|
|
case '/':
|
|
|
|
state = sw_first_major_digit;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
|
}
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
|
|
|
|
/* first digit of major HTTP version */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_first_major_digit:
|
2003-01-09 13:36:00 +08:00
|
|
|
if (ch < '1' || ch > '9') {
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
2002-08-16 01:20:26 +08:00
|
|
|
|
|
|
|
r->http_major = ch - '0';
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_major_digit;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
|
|
|
|
/* major HTTP version or dot */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_major_digit:
|
2002-08-16 01:20:26 +08:00
|
|
|
if (ch == '.') {
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_first_minor_digit;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2003-01-09 13:36:00 +08:00
|
|
|
if (ch < '0' || ch > '9') {
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
2002-08-16 01:20:26 +08:00
|
|
|
|
|
|
|
r->http_major = r->http_major * 10 + ch - '0';
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* first digit of minor HTTP version */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_first_minor_digit:
|
2003-01-09 13:36:00 +08:00
|
|
|
if (ch < '0' || ch > '9') {
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
2002-08-16 01:20:26 +08:00
|
|
|
|
|
|
|
r->http_minor = ch - '0';
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_minor_digit;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
|
|
|
|
/* minor HTTP version or end of request line */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_minor_digit:
|
2002-08-16 01:20:26 +08:00
|
|
|
if (ch == CR) {
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_almost_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ch == LF) {
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2003-01-09 13:36:00 +08:00
|
|
|
if (ch < '0' || ch > '9') {
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
2002-08-16 01:20:26 +08:00
|
|
|
|
|
|
|
r->http_minor = r->http_minor * 10 + ch - '0';
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* end of request line */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_almost_done:
|
2002-10-05 01:58:04 +08:00
|
|
|
r->request_end = p - 2;
|
2002-08-16 01:20:26 +08:00
|
|
|
switch (ch) {
|
|
|
|
case LF:
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
default:
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
2002-08-16 01:20:26 +08:00
|
|
|
}
|
|
|
|
break;
|
2003-11-21 14:30:49 +08:00
|
|
|
|
|
|
|
/* suppress warning */
|
|
|
|
case sw_done:
|
|
|
|
break;
|
2002-08-16 01:20:26 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2004-09-21 13:38:28 +08:00
|
|
|
b->pos = p;
|
2002-08-16 01:20:26 +08:00
|
|
|
|
2002-08-30 00:59:54 +08:00
|
|
|
if (state == sw_done) {
|
2003-01-09 13:36:00 +08:00
|
|
|
if (r->request_end == NULL) {
|
2002-10-05 01:58:04 +08:00
|
|
|
r->request_end = p - 1;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
|
|
|
|
2002-08-16 01:20:26 +08:00
|
|
|
r->http_version = r->http_major * 1000 + r->http_minor;
|
2002-08-30 00:59:54 +08:00
|
|
|
r->state = sw_start;
|
2003-01-09 13:36:00 +08:00
|
|
|
|
2003-05-15 23:42:53 +08:00
|
|
|
if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
|
|
return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
|
|
|
|
2003-05-15 23:42:53 +08:00
|
|
|
return NGX_OK;
|
|
|
|
|
2002-08-16 01:20:26 +08:00
|
|
|
} else {
|
|
|
|
r->state = state;
|
2002-08-30 00:59:54 +08:00
|
|
|
return NGX_AGAIN;
|
2002-08-16 01:20:26 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2003-11-29 01:41:47 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_int_t ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b)
|
2002-08-16 01:20:26 +08:00
|
|
|
{
|
2004-03-16 15:10:12 +08:00
|
|
|
u_char c, ch, *p;
|
2003-11-29 01:41:47 +08:00
|
|
|
enum {
|
2002-08-30 00:59:54 +08:00
|
|
|
sw_start = 0,
|
|
|
|
sw_name,
|
|
|
|
sw_space_before_value,
|
|
|
|
sw_value,
|
|
|
|
sw_space_after_value,
|
|
|
|
sw_almost_done,
|
|
|
|
sw_header_almost_done,
|
2003-04-08 23:40:10 +08:00
|
|
|
sw_ignore_line,
|
2002-08-30 00:59:54 +08:00
|
|
|
sw_done,
|
|
|
|
sw_header_done
|
2002-12-05 00:29:40 +08:00
|
|
|
} state;
|
|
|
|
|
|
|
|
state = r->state;
|
2004-05-28 23:49:23 +08:00
|
|
|
p = b->pos;
|
2002-08-16 01:20:26 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
while (p < b->last && state < sw_done) {
|
2002-08-16 01:20:26 +08:00
|
|
|
ch = *p++;
|
|
|
|
|
|
|
|
switch (state) {
|
|
|
|
|
|
|
|
/* first char */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_start:
|
2002-08-16 01:20:26 +08:00
|
|
|
switch (ch) {
|
|
|
|
case CR:
|
|
|
|
r->header_end = p - 1;
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_header_almost_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
case LF:
|
|
|
|
r->header_end = p - 1;
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_header_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
default:
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_name;
|
2002-08-16 01:20:26 +08:00
|
|
|
r->header_name_start = p - 1;
|
|
|
|
|
2004-03-16 21:35:20 +08:00
|
|
|
c = (u_char) (ch | 0x20);
|
2003-01-09 13:36:00 +08:00
|
|
|
if (c >= 'a' && c <= 'z') {
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
2002-08-16 01:20:26 +08:00
|
|
|
|
2004-01-26 16:52:49 +08:00
|
|
|
if (ch == '-' || ch == '_' || ch == '~' || ch == '.') {
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
2002-08-16 01:20:26 +08:00
|
|
|
|
2003-01-09 13:36:00 +08:00
|
|
|
if (ch >= '0' && ch <= '9') {
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
2002-08-16 01:20:26 +08:00
|
|
|
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_INVALID_HEADER;
|
2002-08-16 01:20:26 +08:00
|
|
|
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* header name */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_name:
|
2004-03-16 15:10:12 +08:00
|
|
|
c = (u_char) (ch | 0x20);
|
2003-01-09 13:36:00 +08:00
|
|
|
if (c >= 'a' && c <= 'z') {
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
2002-08-16 01:20:26 +08:00
|
|
|
|
|
|
|
if (ch == ':') {
|
|
|
|
r->header_name_end = p - 1;
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_space_before_value;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2004-01-26 16:52:49 +08:00
|
|
|
if (ch == '-' || ch == '_' || ch == '~' || ch == '.') {
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
2002-08-16 01:20:26 +08:00
|
|
|
|
2003-01-09 13:36:00 +08:00
|
|
|
if (ch >= '0' && ch <= '9') {
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
2003-01-09 13:36:00 +08:00
|
|
|
}
|
2002-08-16 01:20:26 +08:00
|
|
|
|
2003-04-09 23:42:08 +08:00
|
|
|
/* IIS can send duplicate "HTTP/1.1 ..." lines */
|
|
|
|
if (ch == '/'
|
|
|
|
&& r->proxy
|
|
|
|
&& p - r->header_start == 5
|
|
|
|
&& ngx_strncmp(r->header_start, "HTTP", 4) == 0)
|
|
|
|
{
|
|
|
|
state = sw_ignore_line;
|
|
|
|
break;
|
2003-04-08 23:40:10 +08:00
|
|
|
}
|
|
|
|
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_INVALID_HEADER;
|
2002-08-16 01:20:26 +08:00
|
|
|
|
|
|
|
/* space* before header value */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_space_before_value:
|
2002-08-16 01:20:26 +08:00
|
|
|
switch (ch) {
|
|
|
|
case ' ':
|
|
|
|
break;
|
|
|
|
case CR:
|
|
|
|
r->header_start = r->header_end = p - 1;
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_almost_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
case LF:
|
|
|
|
r->header_start = r->header_end = p - 1;
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
r->header_start = p - 1;
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_value;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* header value */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_value:
|
2002-08-16 01:20:26 +08:00
|
|
|
switch (ch) {
|
|
|
|
case ' ':
|
|
|
|
r->header_end = p - 1;
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_space_after_value;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
case CR:
|
|
|
|
r->header_end = p - 1;
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_almost_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
case LF:
|
|
|
|
r->header_end = p - 1;
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* space* before end of header line */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_space_after_value:
|
2002-08-16 01:20:26 +08:00
|
|
|
switch (ch) {
|
|
|
|
case ' ':
|
|
|
|
break;
|
|
|
|
case CR:
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_almost_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
case LF:
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
default:
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_value;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2003-04-08 23:40:10 +08:00
|
|
|
/* ignore header line */
|
|
|
|
case sw_ignore_line:
|
|
|
|
switch (ch) {
|
|
|
|
case LF:
|
|
|
|
state = sw_start;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2002-08-16 01:20:26 +08:00
|
|
|
/* end of header line */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_almost_done:
|
2002-08-16 01:20:26 +08:00
|
|
|
switch (ch) {
|
|
|
|
case LF:
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
default:
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_INVALID_HEADER;
|
2002-08-16 01:20:26 +08:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* end of header */
|
2002-08-30 00:59:54 +08:00
|
|
|
case sw_header_almost_done:
|
2002-08-16 01:20:26 +08:00
|
|
|
switch (ch) {
|
|
|
|
case LF:
|
2002-08-30 00:59:54 +08:00
|
|
|
state = sw_header_done;
|
2002-08-16 01:20:26 +08:00
|
|
|
break;
|
|
|
|
default:
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_INVALID_HEADER;
|
2002-08-16 01:20:26 +08:00
|
|
|
}
|
|
|
|
break;
|
2003-11-21 14:30:49 +08:00
|
|
|
|
|
|
|
/* suppress warning */
|
|
|
|
case sw_done:
|
|
|
|
case sw_header_done:
|
|
|
|
break;
|
2002-08-16 01:20:26 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
b->pos = p;
|
2002-08-16 01:20:26 +08:00
|
|
|
|
2002-08-30 00:59:54 +08:00
|
|
|
if (state == sw_done) {
|
|
|
|
r->state = sw_start;
|
|
|
|
return NGX_OK;
|
2003-01-09 13:36:00 +08:00
|
|
|
|
2002-08-30 00:59:54 +08:00
|
|
|
} else if (state == sw_header_done) {
|
|
|
|
r->state = sw_start;
|
2002-09-13 22:47:42 +08:00
|
|
|
return NGX_HTTP_PARSE_HEADER_DONE;
|
2003-01-09 13:36:00 +08:00
|
|
|
|
2002-08-16 01:20:26 +08:00
|
|
|
} else {
|
|
|
|
r->state = state;
|
2002-08-30 00:59:54 +08:00
|
|
|
return NGX_AGAIN;
|
2002-08-16 01:20:26 +08:00
|
|
|
}
|
|
|
|
}
|
2003-11-29 01:41:47 +08:00
|
|
|
|
|
|
|
|
2003-12-15 04:10:27 +08:00
|
|
|
ngx_int_t ngx_http_parse_complex_uri(ngx_http_request_t *r)
|
2003-11-29 01:41:47 +08:00
|
|
|
{
|
2004-03-16 15:10:12 +08:00
|
|
|
u_char c, ch, decoded, *p, *u;
|
2003-11-29 01:41:47 +08:00
|
|
|
enum {
|
|
|
|
sw_usual = 0,
|
|
|
|
sw_slash,
|
|
|
|
sw_dot,
|
|
|
|
sw_dot_dot,
|
|
|
|
#if (WIN32)
|
|
|
|
sw_dot_dot_dot,
|
|
|
|
#endif
|
|
|
|
sw_quoted,
|
|
|
|
sw_quoted_second
|
|
|
|
} state, quoted_state;
|
|
|
|
|
|
|
|
decoded = '\0';
|
|
|
|
quoted_state = sw_usual;
|
|
|
|
|
|
|
|
state = sw_usual;
|
|
|
|
p = r->uri_start;
|
|
|
|
u = r->uri.data;
|
2003-12-01 04:03:18 +08:00
|
|
|
r->uri_ext = NULL;
|
2003-11-29 01:41:47 +08:00
|
|
|
|
|
|
|
ch = *p++;
|
|
|
|
|
|
|
|
while (p < r->uri_start + r->uri.len + 1) {
|
|
|
|
|
2004-02-12 01:08:49 +08:00
|
|
|
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
|
"s:%d in:'%x:%c', out:'%c'", state, ch, ch, *u);
|
2003-11-29 01:41:47 +08:00
|
|
|
|
|
|
|
switch (state) {
|
|
|
|
case sw_usual:
|
|
|
|
switch(ch) {
|
|
|
|
case '/':
|
2003-12-01 04:03:18 +08:00
|
|
|
r->uri_ext = NULL;
|
2003-11-29 01:41:47 +08:00
|
|
|
state = sw_slash;
|
|
|
|
*u++ = ch;
|
|
|
|
break;
|
|
|
|
case '%':
|
|
|
|
quoted_state = state;
|
|
|
|
state = sw_quoted;
|
|
|
|
break;
|
2003-12-01 04:03:18 +08:00
|
|
|
case '.':
|
|
|
|
r->uri_ext = u + 1;
|
2003-11-29 01:41:47 +08:00
|
|
|
default:
|
|
|
|
*u++ = ch;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
ch = *p++;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case sw_slash:
|
|
|
|
switch(ch) {
|
|
|
|
case '/':
|
|
|
|
break;
|
|
|
|
case '.':
|
|
|
|
state = sw_dot;
|
|
|
|
*u++ = ch;
|
|
|
|
break;
|
|
|
|
case '%':
|
|
|
|
quoted_state = state;
|
|
|
|
state = sw_quoted;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
state = sw_usual;
|
|
|
|
*u++ = ch;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
ch = *p++;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case sw_dot:
|
|
|
|
switch(ch) {
|
|
|
|
case '/':
|
|
|
|
state = sw_slash;
|
|
|
|
u--;
|
|
|
|
break;
|
|
|
|
case '.':
|
|
|
|
state = sw_dot_dot;
|
|
|
|
*u++ = ch;
|
|
|
|
break;
|
|
|
|
case '%':
|
|
|
|
quoted_state = state;
|
|
|
|
state = sw_quoted;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
state = sw_usual;
|
|
|
|
*u++ = ch;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
ch = *p++;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case sw_dot_dot:
|
|
|
|
switch(ch) {
|
|
|
|
case '/':
|
|
|
|
state = sw_slash;
|
|
|
|
u -= 4;
|
|
|
|
if (u < r->uri.data) {
|
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
|
}
|
|
|
|
while (*(u - 1) != '/') {
|
|
|
|
u--;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case '%':
|
|
|
|
quoted_state = state;
|
|
|
|
state = sw_quoted;
|
|
|
|
break;
|
|
|
|
#if (WIN32)
|
|
|
|
case '.':
|
|
|
|
state = sw_dot_dot_dot;
|
|
|
|
*u++ = ch;
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
default:
|
|
|
|
state = sw_usual;
|
|
|
|
*u++ = ch;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
ch = *p++;
|
|
|
|
break;
|
|
|
|
|
|
|
|
#if (WIN32)
|
|
|
|
case sw_dot_dot_dot:
|
|
|
|
switch(ch) {
|
|
|
|
case '/':
|
|
|
|
state = sw_slash;
|
|
|
|
u -= 5;
|
|
|
|
if (u < r->uri.data) {
|
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
|
}
|
|
|
|
while (*u != '/') {
|
|
|
|
u--;
|
|
|
|
}
|
|
|
|
if (u < r->uri.data) {
|
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
|
}
|
|
|
|
while (*(u - 1) != '/') {
|
|
|
|
u--;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case '%':
|
|
|
|
quoted_state = state;
|
|
|
|
state = sw_quoted;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
state = sw_usual;
|
|
|
|
*u++ = ch;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
ch = *p++;
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
case sw_quoted:
|
|
|
|
if (ch >= '0' && ch <= '9') {
|
2004-03-16 21:35:20 +08:00
|
|
|
decoded = (u_char) (ch - '0');
|
2003-11-29 01:41:47 +08:00
|
|
|
state = sw_quoted_second;
|
|
|
|
ch = *p++;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2004-03-16 21:35:20 +08:00
|
|
|
c = (u_char) (ch | 0x20);
|
2003-11-29 01:41:47 +08:00
|
|
|
if (c >= 'a' && c <= 'f') {
|
2004-03-16 21:35:20 +08:00
|
|
|
decoded = (u_char) (c - 'a' + 10);
|
2003-11-29 01:41:47 +08:00
|
|
|
state = sw_quoted_second;
|
|
|
|
ch = *p++;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
|
|
|
|
|
case sw_quoted_second:
|
|
|
|
if (ch >= '0' && ch <= '9') {
|
2004-03-16 21:35:20 +08:00
|
|
|
ch = (u_char) ((decoded << 4) + ch - '0');
|
2003-12-03 00:57:05 +08:00
|
|
|
if (ch == '%') {
|
|
|
|
state = sw_usual;
|
|
|
|
*u++ = ch;
|
|
|
|
ch = *p++;
|
|
|
|
break;
|
|
|
|
}
|
2003-11-29 01:41:47 +08:00
|
|
|
state = quoted_state;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2004-03-16 21:35:20 +08:00
|
|
|
c = (u_char) (ch | 0x20);
|
2003-11-29 01:41:47 +08:00
|
|
|
if (c >= 'a' && c <= 'f') {
|
2004-03-16 21:35:20 +08:00
|
|
|
ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
2003-12-03 00:57:05 +08:00
|
|
|
if (ch == '%') {
|
|
|
|
state = sw_usual;
|
|
|
|
*u++ = ch;
|
|
|
|
ch = *p++;
|
|
|
|
break;
|
|
|
|
}
|
2003-11-29 01:41:47 +08:00
|
|
|
state = quoted_state;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
r->uri.len = u - r->uri.data;
|
|
|
|
r->uri.data[r->uri.len] = '\0';
|
|
|
|
|
2003-12-01 04:03:18 +08:00
|
|
|
if (r->uri_ext) {
|
|
|
|
r->exten.len = u - r->uri_ext;
|
|
|
|
|
|
|
|
if (!(r->exten.data = ngx_palloc(r->pool, r->exten.len + 1))) {
|
|
|
|
return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
|
|
|
|
ngx_cpystrn(r->exten.data, r->uri_ext, r->exten.len + 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
r->uri_ext = NULL;
|
|
|
|
|
2003-11-29 01:41:47 +08:00
|
|
|
return NGX_OK;
|
|
|
|
}
|