Mercurial > hg > nginx
annotate src/http/ngx_http_request_body.c @ 667:63a820b0bc6c release-0.3.55
nginx-0.3.55-RELEASE import
*) Feature: the "stub" parameter in the "include" SSI command.
*) Feature: the "block" SSI command.
*) Feature: the unicode2nginx script was added to contrib.
*) Bugfix: if a "root" was specified by variable only, then the root
was relative to a server prefix.
*) Bugfix: if the request contained "//" or "/./" and escaped symbols
after them, then the proxied request was sent unescaped.
*) Bugfix: the $r->headers_in("Cookie") of the ngx_http_perl_module now
returns all "Cookie" header lines.
*) Bugfix: a segmentation fault occurred if
"client_body_in_file_only on" was used and nginx switched to a next
upstream.
*) Bugfix: on some condition while reconfiguration character codes
inside the "charset_map" may be treated invalid; the bug had
appeared in 0.3.50.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Fri, 28 Jul 2006 15:16:17 +0000 |
| parents | 5fd7a5e99047 |
| children | b80f94fa2197 |
| rev | line source |
|---|---|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_event.h> |
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10 #include <ngx_http.h> |
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12 |
| 509 | 13 static void ngx_http_read_client_request_body_handler(ngx_http_request_t *r); |
| 14 static ngx_int_t ngx_http_do_read_client_request_body(ngx_http_request_t *r); | |
| 633 | 15 static ngx_int_t ngx_http_write_request_body(ngx_http_request_t *r, |
| 16 ngx_chain_t *body); | |
| 17 static void ngx_http_finalize_request_body(ngx_http_request_t *r, ngx_int_t rc); | |
| 18 static void ngx_http_read_discarded_body_handler(ngx_http_request_t *r); | |
| 19 static ngx_int_t ngx_http_read_discarded_body(ngx_http_request_t *r); | |
| 20 | |
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21 |
| 479 | 22 /* |
| 23 * on completion ngx_http_read_client_request_body() adds to | |
| 24 * r->request_body->bufs one or two bufs: | |
| 25 * *) one memory buf that was preread in r->header_in; | |
| 26 * *) one memory or file buf that contains the rest of the body | |
| 27 */ | |
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28 |
| 501 | 29 ngx_int_t |
| 30 ngx_http_read_client_request_body(ngx_http_request_t *r, | |
| 31 ngx_http_client_body_handler_pt post_handler) | |
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32 { |
| 663 | 33 size_t preread; |
| 34 ssize_t size; | |
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35 ngx_buf_t *b; |
| 633 | 36 ngx_chain_t *cl, **next; |
| 479 | 37 ngx_http_request_body_t *rb; |
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38 ngx_http_core_loc_conf_t *clcf; |
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39 |
| 537 | 40 if (r->request_body || r->discard_body) { |
| 509 | 41 post_handler(r); |
| 42 return NGX_OK; | |
| 43 } | |
| 44 | |
| 501 | 45 rb = ngx_pcalloc(r->pool, sizeof(ngx_http_request_body_t)); |
| 46 if (rb == NULL) { | |
| 479 | 47 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 48 } | |
| 49 | |
| 50 r->request_body = rb; | |
| 51 | |
| 52 if (r->headers_in.content_length_n <= 0) { | |
| 53 post_handler(r); | |
| 54 return NGX_OK; | |
| 55 } | |
| 56 | |
| 57 rb->post_handler = post_handler; | |
| 58 | |
| 59 /* | |
| 60 * set by ngx_pcalloc(): | |
| 61 * | |
| 62 * rb->bufs = NULL; | |
| 63 * rb->buf = NULL; | |
| 64 * rb->rest = 0; | |
| 65 */ | |
| 66 | |
| 633 | 67 preread = r->header_in->last - r->header_in->pos; |
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68 |
| 633 | 69 if (preread) { |
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70 |
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71 /* there is the pre-read part of the request body */ |
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72 |
| 633 | 73 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| 74 "http client request body preread %uz", preread); | |
| 75 | |
| 501 | 76 b = ngx_calloc_buf(r->pool); |
| 77 if (b == NULL) { | |
| 479 | 78 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 79 } | |
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80 |
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81 b->temporary = 1; |
| 633 | 82 b->start = r->header_in->pos; |
| 83 b->pos = r->header_in->pos; | |
| 84 b->last = r->header_in->last; | |
| 85 b->end = r->header_in->end; | |
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86 |
| 501 | 87 rb->bufs = ngx_alloc_chain_link(r->pool); |
| 88 if (rb->bufs == NULL) { | |
| 479 | 89 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 90 } | |
| 91 | |
| 92 rb->bufs->buf = b; | |
| 93 rb->bufs->next = NULL; | |
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94 |
| 667 | 95 rb->buf = b; |
| 96 | |
| 665 | 97 if ((off_t) preread >= r->headers_in.content_length_n) { |
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98 |
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99 /* the whole request body was pre-read */ |
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100 |
| 663 | 101 r->header_in->pos += (size_t) r->headers_in.content_length_n; |
| 475 | 102 r->request_length += r->headers_in.content_length_n; |
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103 |
| 633 | 104 if (r->request_body_in_file_only) { |
| 105 if (ngx_http_write_request_body(r, rb->bufs) != NGX_OK) { | |
| 106 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 107 } | |
| 108 } | |
| 109 | |
| 479 | 110 post_handler(r); |
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111 |
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112 return NGX_OK; |
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113 } |
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114 |
| 633 | 115 /* |
| 116 * to not consider the body as pipelined request in | |
| 117 * ngx_http_set_keepalive() | |
| 118 */ | |
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119 r->header_in->pos = r->header_in->last; |
| 633 | 120 |
| 121 r->request_length += preread; | |
| 122 | |
| 123 rb->rest = r->headers_in.content_length_n - preread; | |
| 124 | |
| 665 | 125 if (rb->rest <= (off_t) (b->end - b->last)) { |
| 633 | 126 |
| 127 /* the whole request body may be placed in r->header_in */ | |
| 128 | |
| 129 r->read_event_handler = ngx_http_read_client_request_body_handler; | |
| 130 | |
| 131 return ngx_http_do_read_client_request_body(r); | |
| 132 } | |
| 133 | |
| 134 next = &rb->bufs->next; | |
| 135 | |
| 136 } else { | |
| 137 b = NULL; | |
| 138 rb->rest = r->headers_in.content_length_n; | |
| 139 next = &rb->bufs; | |
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140 } |
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141 |
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142 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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143 |
| 633 | 144 size = clcf->client_body_buffer_size; |
| 145 size += size >> 2; | |
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146 |
| 663 | 147 if (rb->rest < size) { |
| 148 size = (ssize_t) rb->rest; | |
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149 |
| 633 | 150 if (r->request_body_in_single_buf) { |
| 151 size += preread; | |
| 152 } | |
| 153 | |
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154 } else { |
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155 size = clcf->client_body_buffer_size; |
| 633 | 156 |
| 157 /* disable copying buffer for r->request_body_in_single_buf */ | |
| 158 b = NULL; | |
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159 } |
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160 |
| 501 | 161 rb->buf = ngx_create_temp_buf(r->pool, size); |
| 162 if (rb->buf == NULL) { | |
| 479 | 163 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 164 } | |
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165 |
| 501 | 166 cl = ngx_alloc_chain_link(r->pool); |
| 167 if (cl == NULL) { | |
| 479 | 168 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 169 } | |
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170 |
| 479 | 171 cl->buf = rb->buf; |
| 172 cl->next = NULL; | |
| 173 | |
| 633 | 174 if (b && r->request_body_in_single_buf) { |
| 175 size = b->last - b->pos; | |
| 176 ngx_memcpy(rb->buf->pos, b->pos, size); | |
| 177 rb->buf->last += size; | |
| 178 | |
| 179 next = &rb->bufs; | |
| 180 } | |
| 181 | |
| 182 *next = cl; | |
| 183 | |
| 184 if (r->request_body_in_file_only || r->request_body_in_single_buf) { | |
| 185 rb->to_write = rb->bufs; | |
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186 |
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187 } else { |
| 633 | 188 rb->to_write = rb->bufs->next ? rb->bufs->next : rb->bufs; |
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189 } |
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190 |
| 509 | 191 r->read_event_handler = ngx_http_read_client_request_body_handler; |
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192 |
| 509 | 193 return ngx_http_do_read_client_request_body(r); |
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194 } |
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195 |
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196 |
| 501 | 197 static void |
| 509 | 198 ngx_http_read_client_request_body_handler(ngx_http_request_t *r) |
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199 { |
| 509 | 200 ngx_int_t rc; |
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201 |
| 509 | 202 if (r->connection->read->timedout) { |
| 577 | 203 r->connection->timedout = 1; |
| 633 | 204 ngx_http_finalize_request_body(r, NGX_HTTP_REQUEST_TIME_OUT); |
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205 return; |
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206 } |
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207 |
| 509 | 208 rc = ngx_http_do_read_client_request_body(r); |
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209 |
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210 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { |
| 633 | 211 ngx_http_finalize_request_body(r, rc); |
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212 } |
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213 } |
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214 |
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215 |
| 501 | 216 static ngx_int_t |
| 509 | 217 ngx_http_do_read_client_request_body(ngx_http_request_t *r) |
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218 { |
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219 size_t size; |
|
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220 ssize_t n; |
|
343
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221 ngx_buf_t *b; |
| 509 | 222 ngx_connection_t *c; |
| 479 | 223 ngx_http_request_body_t *rb; |
|
162
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224 ngx_http_core_loc_conf_t *clcf; |
|
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225 |
| 509 | 226 c = r->connection; |
| 479 | 227 rb = r->request_body; |
|
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228 |
|
292
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229 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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230 "http read client request body"); |
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231 |
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232 for ( ;; ) { |
| 479 | 233 if (rb->buf->last == rb->buf->end) { |
| 234 | |
| 633 | 235 if (ngx_http_write_request_body(r, rb->to_write) != NGX_OK) { |
|
293
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236 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
|
292
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237 } |
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238 |
| 633 | 239 rb->to_write = rb->bufs->next ? rb->bufs->next : rb->bufs; |
| 479 | 240 rb->buf->last = rb->buf->start; |
|
292
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241 } |
|
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242 |
| 479 | 243 size = rb->buf->end - rb->buf->last; |
|
292
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244 |
| 665 | 245 if ((off_t) size > rb->rest) { |
| 663 | 246 size = (size_t) rb->rest; |
|
292
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247 } |
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248 |
| 479 | 249 n = c->recv(c, rb->buf->last, size); |
|
292
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250 |
|
293
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251 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 461 | 252 "http client request body recv %z", n); |
|
293
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253 |
|
292
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254 if (n == NGX_AGAIN) { |
| 573 | 255 break; |
|
162
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256 } |
|
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257 |
|
292
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258 if (n == 0) { |
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259 ngx_log_error(NGX_LOG_INFO, c->log, 0, |
|
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260 "client closed prematurely connection"); |
|
82
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261 } |
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262 |
|
292
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263 if (n == 0 || n == NGX_ERROR) { |
| 583 | 264 c->error = 1; |
|
293
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265 return NGX_HTTP_BAD_REQUEST; |
|
292
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266 } |
|
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267 |
| 479 | 268 rb->buf->last += n; |
| 269 rb->rest -= n; | |
| 475 | 270 r->request_length += n; |
|
292
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271 |
| 479 | 272 if (rb->rest == 0) { |
|
294
5cfd65b8b0a7
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273 break; |
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274 } |
|
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275 |
| 479 | 276 if (rb->buf->last < rb->buf->end) { |
|
292
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277 break; |
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|
278 } |
|
160
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nginx-0.0.1-2003-10-27-11:53:49 import
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|
279 } |
|
82
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280 |
|
293
ec3c049681fd
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281 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 479 | 282 "http client request body rest %uz", rb->rest); |
|
293
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283 |
| 479 | 284 if (rb->rest) { |
| 573 | 285 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| 286 ngx_add_timer(c->read, clcf->client_body_timeout); | |
| 287 | |
| 288 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) { | |
| 289 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 290 } | |
| 291 | |
|
293
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292 return NGX_AGAIN; |
|
82
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293 } |
|
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294 |
| 573 | 295 if (c->read->timer_set) { |
| 296 ngx_del_timer(c->read); | |
| 297 } | |
| 298 | |
| 633 | 299 if (rb->temp_file || r->request_body_in_file_only) { |
|
82
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300 |
|
160
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301 /* save the last part */ |
| 479 | 302 |
| 633 | 303 if (ngx_http_write_request_body(r, rb->to_write) != NGX_OK) { |
|
293
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304 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
|
162
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|
305 } |
|
160
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306 |
| 501 | 307 b = ngx_calloc_buf(r->pool); |
| 308 if (b == NULL) { | |
|
293
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309 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
|
82
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310 } |
|
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311 |
|
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312 b->in_file = 1; |
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313 b->file_pos = 0; |
| 479 | 314 b->file_last = rb->temp_file->file.offset; |
| 315 b->file = &rb->temp_file->file; | |
|
160
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316 |
| 479 | 317 if (rb->bufs->next) { |
| 318 rb->bufs->next->buf = b; | |
|
160
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|
319 |
|
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|
320 } else { |
| 479 | 321 rb->bufs->buf = b; |
|
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|
322 } |
|
82
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323 } |
|
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|
324 |
| 633 | 325 if (r->request_body_in_file_only && rb->bufs->next) { |
| 326 rb->bufs = rb->bufs->next; | |
| 327 } | |
| 328 | |
| 479 | 329 rb->post_handler(r); |
|
293
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330 |
|
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331 return NGX_OK; |
|
82
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|
332 } |
| 633 | 333 |
| 334 | |
| 335 static ngx_int_t | |
| 336 ngx_http_write_request_body(ngx_http_request_t *r, ngx_chain_t *body) | |
| 337 { | |
| 338 ssize_t n; | |
| 339 ngx_temp_file_t *tf; | |
| 340 ngx_http_request_body_t *rb; | |
| 341 ngx_http_core_loc_conf_t *clcf; | |
| 342 | |
| 343 rb = r->request_body; | |
| 344 | |
| 345 if (rb->temp_file == NULL) { | |
| 346 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)); | |
| 347 if (tf == NULL) { | |
| 348 return NGX_ERROR; | |
| 349 } | |
| 350 | |
| 351 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
| 352 | |
| 353 tf->file.fd = NGX_INVALID_FILE; | |
| 354 tf->file.log = r->connection->log; | |
| 355 tf->path = clcf->client_body_temp_path; | |
| 356 tf->pool = r->pool; | |
| 357 tf->warn = "a client request body is buffered to a temporary file"; | |
| 637 | 358 tf->log_level = r->request_body_file_log_level; |
| 633 | 359 tf->persistent = r->request_body_in_persistent_file; |
| 360 | |
| 361 if (r->request_body_file_group_access) { | |
| 362 tf->mode = 0660; | |
| 363 } | |
| 364 | |
| 365 rb->temp_file = tf; | |
| 366 } | |
| 367 | |
| 368 n = ngx_write_chain_to_temp_file(rb->temp_file, body); | |
| 369 | |
| 370 /* TODO: n == 0 or not complete and level event */ | |
| 371 | |
| 372 if (n == NGX_ERROR) { | |
| 373 return NGX_ERROR; | |
| 374 } | |
| 375 | |
| 376 rb->temp_file->offset += n; | |
| 377 | |
| 378 return NGX_OK; | |
| 379 } | |
| 380 | |
| 381 | |
| 382 static void | |
| 383 ngx_http_finalize_request_body(ngx_http_request_t *r, ngx_int_t rc) | |
| 384 { | |
| 385 if (r->request_body->temp_file | |
| 386 && r->request_body_in_persistent_file | |
| 387 && r->request_body_delete_incomplete_file) | |
| 388 { | |
| 389 if (ngx_delete_file(r->request_body->temp_file->file.name.data) | |
| 390 == NGX_FILE_ERROR) | |
| 391 { | |
| 392 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno, | |
| 393 ngx_delete_file_n " \"%s\" failed", | |
| 394 r->request_body->temp_file->file.name.data); | |
| 395 } | |
| 396 } | |
| 397 | |
| 398 ngx_http_finalize_request(r, rc); | |
| 399 } | |
| 400 | |
| 401 | |
| 402 ngx_int_t | |
| 403 ngx_http_discard_body(ngx_http_request_t *r) | |
| 404 { | |
| 405 ssize_t size; | |
| 406 ngx_event_t *rev; | |
| 407 | |
| 408 if (r != r->main) { | |
| 409 return NGX_OK; | |
| 410 } | |
| 411 | |
| 412 rev = r->connection->read; | |
| 413 | |
| 414 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http set discard body"); | |
| 415 | |
| 416 if (rev->timer_set) { | |
| 417 ngx_del_timer(rev); | |
| 418 } | |
| 419 | |
| 420 if (r->headers_in.content_length_n <= 0) { | |
| 421 return NGX_OK; | |
| 422 } | |
| 423 | |
| 424 r->discard_body = 1; | |
| 425 | |
| 426 size = r->header_in->last - r->header_in->pos; | |
| 427 | |
| 428 if (size) { | |
| 429 if (r->headers_in.content_length_n > size) { | |
| 430 r->headers_in.content_length_n -= size; | |
| 431 | |
| 432 } else { | |
| 663 | 433 r->header_in->pos += (size_t) r->headers_in.content_length_n; |
| 633 | 434 r->headers_in.content_length_n = 0; |
| 435 return NGX_OK; | |
| 436 } | |
| 437 } | |
| 438 | |
| 439 r->read_event_handler = ngx_http_read_discarded_body_handler; | |
| 440 | |
| 441 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { | |
| 442 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 443 } | |
| 444 | |
| 445 return ngx_http_read_discarded_body(r); | |
| 446 } | |
| 447 | |
| 448 | |
| 449 static void | |
| 450 ngx_http_read_discarded_body_handler(ngx_http_request_t *r) | |
| 451 { | |
| 452 ngx_int_t rc; | |
| 453 | |
| 454 rc = ngx_http_read_discarded_body(r); | |
| 455 | |
| 456 if (rc == NGX_AGAIN) { | |
| 457 if (ngx_handle_read_event(r->connection->read, 0) == NGX_ERROR) { | |
| 458 ngx_http_finalize_request(r, rc); | |
| 459 return; | |
| 460 } | |
| 461 } | |
| 462 | |
| 463 if (rc != NGX_OK) { | |
| 464 ngx_http_finalize_request(r, rc); | |
| 465 } | |
| 466 } | |
| 467 | |
| 468 | |
| 469 static ngx_int_t | |
| 470 ngx_http_read_discarded_body(ngx_http_request_t *r) | |
| 471 { | |
| 663 | 472 size_t size; |
| 473 ssize_t n; | |
| 633 | 474 u_char buffer[NGX_HTTP_DISCARD_BUFFER_SIZE]; |
| 475 | |
| 476 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 477 "http read discarded body"); | |
| 478 | |
| 479 if (r->headers_in.content_length_n == 0) { | |
| 480 return NGX_OK; | |
| 481 } | |
| 482 | |
| 663 | 483 size = (r->headers_in.content_length_n > NGX_HTTP_DISCARD_BUFFER_SIZE) ? |
| 484 NGX_HTTP_DISCARD_BUFFER_SIZE: | |
| 485 (size_t) r->headers_in.content_length_n; | |
| 633 | 486 |
| 487 n = r->connection->recv(r->connection, buffer, size); | |
| 488 | |
| 489 if (n == NGX_ERROR) { | |
| 490 | |
| 491 r->connection->error = 1; | |
| 492 | |
| 493 /* | |
| 494 * if a client request body is discarded then we already set | |
| 495 * some HTTP response code for client and we can ignore the error | |
| 496 */ | |
| 497 | |
| 498 return NGX_OK; | |
| 499 } | |
| 500 | |
| 501 if (n == NGX_AGAIN) { | |
| 502 return NGX_AGAIN; | |
| 503 } | |
| 504 | |
| 505 r->headers_in.content_length_n -= n; | |
| 506 | |
| 507 return NGX_OK; | |
| 508 } |