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comparison src/http/ngx_http_request_body.c @ 0:f0b350454894 NGINX_0_1_0

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nginx 0.1.0 *) The first public version.
author Igor Sysoev <http://sysoev.ru>
date Mon, 04 Oct 2004 00:00:00 +0400
parents
children 46833bd150cb
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-1:000000000000 0:f0b350454894
1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6
7 #include <ngx_config.h>
8 #include <ngx_core.h>
9 #include <ngx_event.h>
10 #include <ngx_http.h>
11
12
13 static void ngx_http_read_client_request_body_handler(ngx_event_t *rev);
14 static ngx_int_t ngx_http_do_read_client_request_body(ngx_http_request_t *r);
15
16
17 ngx_int_t ngx_http_read_client_request_body(ngx_http_request_t *r)
18 {
19 ssize_t size;
20 ngx_buf_t *b;
21 ngx_chain_t *cl;
22 ngx_http_core_loc_conf_t *clcf;
23
24 size = r->header_in->last - r->header_in->pos;
25
26 if (size) {
27
28 /* there is the pre-read part of the request body */
29
30 ngx_test_null(b, ngx_calloc_buf(r->pool),
31 NGX_HTTP_INTERNAL_SERVER_ERROR);
32
33 b->temporary = 1;
34 b->start = b->pos = r->header_in->pos;
35 b->end = b->last = r->header_in->last;
36
37 ngx_alloc_link_and_set_buf(r->request_body->bufs, b, r->pool,
38 NGX_HTTP_INTERNAL_SERVER_ERROR);
39
40 if (size >= r->headers_in.content_length_n) {
41
42 /* the whole request body was pre-read */
43
44 r->header_in->pos += r->headers_in.content_length_n;
45
46 r->request_body->handler(r->request_body->data);
47
48 return NGX_OK;
49 }
50
51 r->header_in->pos = r->header_in->last;
52 }
53
54
55 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
56
57 r->request_body->rest = r->headers_in.content_length_n - size;
58
59 if (r->request_body->rest
60 < clcf->client_body_buffer_size
61 + (clcf->client_body_buffer_size >> 2))
62 {
63 size = r->request_body->rest;
64
65 } else {
66 size = clcf->client_body_buffer_size;
67 }
68
69 ngx_test_null(r->request_body->buf, ngx_create_temp_buf(r->pool, size),
70 NGX_HTTP_INTERNAL_SERVER_ERROR);
71
72 ngx_alloc_link_and_set_buf(cl, r->request_body->buf, r->pool,
73 NGX_HTTP_INTERNAL_SERVER_ERROR);
74
75 if (r->request_body->bufs) {
76 r->request_body->bufs->next = cl;
77
78 } else {
79 r->request_body->bufs = cl;
80 }
81
82 r->connection->read->event_handler =
83 ngx_http_read_client_request_body_handler;
84
85 return ngx_http_do_read_client_request_body(r);
86 }
87
88
89 static void ngx_http_read_client_request_body_handler(ngx_event_t *rev)
90 {
91 ngx_int_t rc;
92 ngx_connection_t *c;
93 ngx_http_request_t *r;
94
95 c = rev->data;
96 r = c->data;
97
98 if (rev->timedout) {
99 ngx_http_finalize_request(r, NGX_HTTP_REQUEST_TIME_OUT);
100 return;
101 }
102
103 rc = ngx_http_do_read_client_request_body(r);
104
105 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
106 ngx_http_finalize_request(r, rc);
107 }
108 }
109
110
111 static ngx_int_t ngx_http_do_read_client_request_body(ngx_http_request_t *r)
112 {
113 size_t size;
114 ssize_t n;
115 ngx_buf_t *b;
116 ngx_connection_t *c;
117 ngx_http_core_loc_conf_t *clcf;
118
119 c = r->connection;
120
121 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
122 "http read client request body");
123
124 for ( ;; ) {
125 if (r->request_body->buf->last == r->request_body->buf->end) {
126 n = ngx_write_chain_to_temp_file(r->request_body->temp_file,
127 r->request_body->bufs->next ? r->request_body->bufs->next:
128 r->request_body->bufs);
129
130 /* TODO: n == 0 or not complete and level event */
131
132 if (n == NGX_ERROR) {
133 return NGX_HTTP_INTERNAL_SERVER_ERROR;
134 }
135
136 r->request_body->temp_file->offset += n;
137
138 r->request_body->buf->pos = r->request_body->buf->start;
139 r->request_body->buf->last = r->request_body->buf->start;
140 }
141
142 size = r->request_body->buf->end - r->request_body->buf->last;
143
144 if (size > r->request_body->rest) {
145 size = r->request_body->rest;
146 }
147
148 n = c->recv(c, r->request_body->buf->last, size);
149
150 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
151 "http client request body recv " SIZE_T_FMT, n);
152
153 if (n == NGX_AGAIN) {
154 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
155 ngx_add_timer(c->read, clcf->client_body_timeout);
156
157 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
158 return NGX_HTTP_INTERNAL_SERVER_ERROR;
159 }
160
161 return NGX_AGAIN;
162 }
163
164 if (n == 0) {
165 ngx_log_error(NGX_LOG_INFO, c->log, 0,
166 "client closed prematurely connection");
167 }
168
169 if (n == 0 || n == NGX_ERROR) {
170 r->closed = 1;
171 return NGX_HTTP_BAD_REQUEST;
172 }
173
174 r->request_body->buf->last += n;
175 r->request_body->rest -= n;
176
177 if (r->request_body->rest == 0) {
178 break;
179 }
180
181 if (r->request_body->buf->last < r->request_body->buf->end) {
182 break;
183 }
184 }
185
186 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
187 "http client request body rest " SIZE_T_FMT,
188 r->request_body->rest);
189
190 if (r->request_body->rest) {
191 return NGX_AGAIN;
192 }
193
194 if (r->request_body->temp_file->file.fd != NGX_INVALID_FILE) {
195
196 /* save the last part */
197 n = ngx_write_chain_to_temp_file(r->request_body->temp_file,
198 r->request_body->bufs->next ? r->request_body->bufs->next:
199 r->request_body->bufs);
200
201 /* TODO: n == 0 or not complete and level event */
202
203 if (n == NGX_ERROR) {
204 return NGX_HTTP_INTERNAL_SERVER_ERROR;
205 }
206
207 if (!(b = ngx_calloc_buf(r->pool))) {
208 return NGX_HTTP_INTERNAL_SERVER_ERROR;
209 }
210
211 b->in_file = 1;
212 b->file_pos = 0;
213 b->file_last = r->request_body->temp_file->file.offset;
214 b->file = &r->request_body->temp_file->file;
215
216 if (r->request_body->bufs->next) {
217 r->request_body->bufs->next->buf = b;
218
219 } else {
220 r->request_body->bufs->buf = b;
221 }
222 }
223
224 r->request_body->handler(r->request_body->data);
225
226 return NGX_OK;
227 }