Mercurial > hg > nginx-quic
annotate src/http/ngx_http_request_body.c @ 1510:2abedb6c0f29 stable-0.5
r1404 merge:
auto redirect lost arguments
author | Igor Sysoev <igor@sysoev.ru> |
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date | Sat, 22 Sep 2007 19:10:53 +0000 |
parents | 51c747ffbbf0 |
children | aa700583b57d |
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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11 |
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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_read_discarded_body_handler(ngx_http_request_t *r); | |
18 static ngx_int_t ngx_http_read_discarded_body(ngx_http_request_t *r); | |
19 | |
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20 |
479 | 21 /* |
22 * on completion ngx_http_read_client_request_body() adds to | |
23 * r->request_body->bufs one or two bufs: | |
24 * *) one memory buf that was preread in r->header_in; | |
25 * *) one memory or file buf that contains the rest of the body | |
26 */ | |
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27 |
501 | 28 ngx_int_t |
29 ngx_http_read_client_request_body(ngx_http_request_t *r, | |
30 ngx_http_client_body_handler_pt post_handler) | |
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31 { |
663 | 32 size_t preread; |
33 ssize_t size; | |
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34 ngx_buf_t *b; |
633 | 35 ngx_chain_t *cl, **next; |
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36 ngx_temp_file_t *tf; |
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 | |
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52 if (r->headers_in.content_length_n < 0) { |
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53 post_handler(r); |
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54 return NGX_OK; |
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55 } |
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56 |
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57 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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58 |
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59 if (r->headers_in.content_length_n == 0) { |
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60 |
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61 if (r->request_body_in_file_only) { |
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62 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)); |
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63 if (tf == NULL) { |
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64 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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65 } |
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66 |
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67 tf->file.fd = NGX_INVALID_FILE; |
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68 tf->file.log = r->connection->log; |
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69 tf->path = clcf->client_body_temp_path; |
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70 tf->pool = r->pool; |
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71 tf->warn = "a client request body is buffered to a temporary file"; |
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72 tf->log_level = r->request_body_file_log_level; |
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73 tf->persistent = r->request_body_in_persistent_file; |
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74 tf->clean = r->request_body_in_clean_file; |
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75 |
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76 if (r->request_body_file_group_access) { |
1046 | 77 tf->access = 0660; |
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78 } |
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79 |
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80 rb->temp_file = tf; |
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81 |
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82 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool, |
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83 tf->persistent, tf->clean, tf->access) |
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84 != NGX_OK) |
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85 { |
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86 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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87 } |
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88 } |
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89 |
479 | 90 post_handler(r); |
1303 | 91 |
479 | 92 return NGX_OK; |
93 } | |
94 | |
95 rb->post_handler = post_handler; | |
96 | |
97 /* | |
98 * set by ngx_pcalloc(): | |
99 * | |
100 * rb->bufs = NULL; | |
101 * rb->buf = NULL; | |
102 * rb->rest = 0; | |
103 */ | |
104 | |
633 | 105 preread = r->header_in->last - r->header_in->pos; |
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106 |
633 | 107 if (preread) { |
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108 |
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109 /* there is the pre-read part of the request body */ |
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110 |
633 | 111 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
112 "http client request body preread %uz", preread); | |
113 | |
501 | 114 b = ngx_calloc_buf(r->pool); |
115 if (b == NULL) { | |
479 | 116 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
117 } | |
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118 |
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119 b->temporary = 1; |
633 | 120 b->start = r->header_in->pos; |
121 b->pos = r->header_in->pos; | |
122 b->last = r->header_in->last; | |
123 b->end = r->header_in->end; | |
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124 |
501 | 125 rb->bufs = ngx_alloc_chain_link(r->pool); |
126 if (rb->bufs == NULL) { | |
479 | 127 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
128 } | |
129 | |
130 rb->bufs->buf = b; | |
131 rb->bufs->next = NULL; | |
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132 |
667 | 133 rb->buf = b; |
134 | |
665 | 135 if ((off_t) preread >= r->headers_in.content_length_n) { |
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136 |
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137 /* the whole request body was pre-read */ |
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138 |
663 | 139 r->header_in->pos += (size_t) r->headers_in.content_length_n; |
475 | 140 r->request_length += r->headers_in.content_length_n; |
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141 |
633 | 142 if (r->request_body_in_file_only) { |
143 if (ngx_http_write_request_body(r, rb->bufs) != NGX_OK) { | |
144 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
145 } | |
146 } | |
147 | |
479 | 148 post_handler(r); |
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149 |
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150 return NGX_OK; |
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151 } |
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152 |
633 | 153 /* |
154 * to not consider the body as pipelined request in | |
155 * ngx_http_set_keepalive() | |
156 */ | |
162
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157 r->header_in->pos = r->header_in->last; |
633 | 158 |
159 r->request_length += preread; | |
160 | |
161 rb->rest = r->headers_in.content_length_n - preread; | |
162 | |
665 | 163 if (rb->rest <= (off_t) (b->end - b->last)) { |
633 | 164 |
165 /* the whole request body may be placed in r->header_in */ | |
166 | |
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167 rb->to_write = rb->bufs; |
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168 |
633 | 169 r->read_event_handler = ngx_http_read_client_request_body_handler; |
170 | |
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171 return ngx_http_do_read_client_request_body(r); |
633 | 172 } |
173 | |
174 next = &rb->bufs->next; | |
175 | |
176 } else { | |
177 b = NULL; | |
178 rb->rest = r->headers_in.content_length_n; | |
179 next = &rb->bufs; | |
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180 } |
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181 |
633 | 182 size = clcf->client_body_buffer_size; |
183 size += size >> 2; | |
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184 |
663 | 185 if (rb->rest < size) { |
186 size = (ssize_t) rb->rest; | |
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187 |
633 | 188 if (r->request_body_in_single_buf) { |
189 size += preread; | |
190 } | |
191 | |
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192 } else { |
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193 size = clcf->client_body_buffer_size; |
633 | 194 |
195 /* disable copying buffer for r->request_body_in_single_buf */ | |
196 b = NULL; | |
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197 } |
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198 |
501 | 199 rb->buf = ngx_create_temp_buf(r->pool, size); |
200 if (rb->buf == NULL) { | |
479 | 201 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
202 } | |
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203 |
501 | 204 cl = ngx_alloc_chain_link(r->pool); |
205 if (cl == NULL) { | |
479 | 206 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
207 } | |
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208 |
479 | 209 cl->buf = rb->buf; |
210 cl->next = NULL; | |
211 | |
633 | 212 if (b && r->request_body_in_single_buf) { |
213 size = b->last - b->pos; | |
214 ngx_memcpy(rb->buf->pos, b->pos, size); | |
215 rb->buf->last += size; | |
216 | |
217 next = &rb->bufs; | |
218 } | |
219 | |
220 *next = cl; | |
221 | |
222 if (r->request_body_in_file_only || r->request_body_in_single_buf) { | |
223 rb->to_write = rb->bufs; | |
160
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224 |
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225 } else { |
633 | 226 rb->to_write = rb->bufs->next ? rb->bufs->next : rb->bufs; |
160
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227 } |
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228 |
509 | 229 r->read_event_handler = ngx_http_read_client_request_body_handler; |
82
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230 |
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231 return ngx_http_do_read_client_request_body(r); |
82
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232 } |
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233 |
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234 |
501 | 235 static void |
509 | 236 ngx_http_read_client_request_body_handler(ngx_http_request_t *r) |
82
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237 { |
509 | 238 ngx_int_t rc; |
293
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239 |
509 | 240 if (r->connection->read->timedout) { |
577 | 241 r->connection->timedout = 1; |
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242 ngx_http_finalize_request(r, NGX_HTTP_REQUEST_TIME_OUT); |
299
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243 return; |
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244 } |
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245 |
509 | 246 rc = ngx_http_do_read_client_request_body(r); |
293
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247 |
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248 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { |
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249 ngx_http_finalize_request(r, rc); |
293
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250 } |
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251 } |
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252 |
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253 |
501 | 254 static ngx_int_t |
509 | 255 ngx_http_do_read_client_request_body(ngx_http_request_t *r) |
293
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256 { |
290
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257 size_t size; |
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258 ssize_t n; |
343
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259 ngx_buf_t *b; |
509 | 260 ngx_connection_t *c; |
479 | 261 ngx_http_request_body_t *rb; |
162
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262 ngx_http_core_loc_conf_t *clcf; |
82
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263 |
509 | 264 c = r->connection; |
479 | 265 rb = r->request_body; |
82
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266 |
292
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267 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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268 "http read client request body"); |
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269 |
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270 for ( ;; ) { |
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271 for ( ;; ) { |
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272 if (rb->buf->last == rb->buf->end) { |
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273 |
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274 if (ngx_http_write_request_body(r, rb->to_write) != NGX_OK) { |
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275 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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276 } |
479 | 277 |
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278 rb->to_write = rb->bufs->next ? rb->bufs->next : rb->bufs; |
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279 rb->buf->last = rb->buf->start; |
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280 } |
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281 |
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282 size = rb->buf->end - rb->buf->last; |
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283 |
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284 if ((off_t) size > rb->rest) { |
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285 size = (size_t) rb->rest; |
292
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286 } |
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287 |
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288 n = c->recv(c, rb->buf->last, size); |
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289 |
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290 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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291 "http client request body recv %z", n); |
82
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292 |
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293 if (n == NGX_AGAIN) { |
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294 break; |
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295 } |
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296 |
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297 if (n == 0) { |
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298 ngx_log_error(NGX_LOG_INFO, c->log, 0, |
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299 "client closed prematurely connection"); |
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300 } |
292
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301 |
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302 if (n == 0 || n == NGX_ERROR) { |
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303 c->error = 1; |
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304 return NGX_HTTP_BAD_REQUEST; |
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305 } |
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306 |
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307 rb->buf->last += n; |
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308 rb->rest -= n; |
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309 r->request_length += n; |
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310 |
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311 if (rb->rest == 0) { |
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312 break; |
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313 } |
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314 |
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315 if (rb->buf->last < rb->buf->end) { |
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316 break; |
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317 } |
292
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318 } |
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319 |
293
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320 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
1112 | 321 "http client request body rest %O", rb->rest); |
292
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322 |
479 | 323 if (rb->rest == 0) { |
294
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324 break; |
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325 } |
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326 |
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327 if (!c->read->ready) { |
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328 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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329 ngx_add_timer(c->read, clcf->client_body_timeout); |
293
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330 |
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331 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) { |
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332 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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333 } |
573 | 334 |
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335 return NGX_AGAIN; |
573 | 336 } |
82
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337 } |
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338 |
573 | 339 if (c->read->timer_set) { |
340 ngx_del_timer(c->read); | |
341 } | |
342 | |
633 | 343 if (rb->temp_file || r->request_body_in_file_only) { |
82
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344 |
160
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345 /* save the last part */ |
479 | 346 |
633 | 347 if (ngx_http_write_request_body(r, rb->to_write) != NGX_OK) { |
293
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348 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
162
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349 } |
160
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350 |
501 | 351 b = ngx_calloc_buf(r->pool); |
352 if (b == NULL) { | |
293
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353 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
82
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354 } |
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355 |
343
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356 b->in_file = 1; |
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357 b->file_pos = 0; |
479 | 358 b->file_last = rb->temp_file->file.offset; |
359 b->file = &rb->temp_file->file; | |
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360 |
479 | 361 if (rb->bufs->next) { |
362 rb->bufs->next->buf = b; | |
160
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363 |
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364 } else { |
479 | 365 rb->bufs->buf = b; |
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366 } |
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367 } |
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368 |
633 | 369 if (r->request_body_in_file_only && rb->bufs->next) { |
370 rb->bufs = rb->bufs->next; | |
371 } | |
372 | |
479 | 373 rb->post_handler(r); |
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374 |
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375 return NGX_OK; |
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376 } |
633 | 377 |
378 | |
379 static ngx_int_t | |
380 ngx_http_write_request_body(ngx_http_request_t *r, ngx_chain_t *body) | |
381 { | |
382 ssize_t n; | |
383 ngx_temp_file_t *tf; | |
384 ngx_http_request_body_t *rb; | |
385 ngx_http_core_loc_conf_t *clcf; | |
386 | |
387 rb = r->request_body; | |
388 | |
389 if (rb->temp_file == NULL) { | |
390 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)); | |
391 if (tf == NULL) { | |
392 return NGX_ERROR; | |
393 } | |
394 | |
395 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
396 | |
397 tf->file.fd = NGX_INVALID_FILE; | |
398 tf->file.log = r->connection->log; | |
399 tf->path = clcf->client_body_temp_path; | |
400 tf->pool = r->pool; | |
401 tf->warn = "a client request body is buffered to a temporary file"; | |
637 | 402 tf->log_level = r->request_body_file_log_level; |
633 | 403 tf->persistent = r->request_body_in_persistent_file; |
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404 tf->clean = r->request_body_in_clean_file; |
633 | 405 |
406 if (r->request_body_file_group_access) { | |
1046 | 407 tf->access = 0660; |
633 | 408 } |
409 | |
410 rb->temp_file = tf; | |
411 } | |
412 | |
413 n = ngx_write_chain_to_temp_file(rb->temp_file, body); | |
414 | |
415 /* TODO: n == 0 or not complete and level event */ | |
416 | |
417 if (n == NGX_ERROR) { | |
418 return NGX_ERROR; | |
419 } | |
420 | |
421 rb->temp_file->offset += n; | |
422 | |
423 return NGX_OK; | |
424 } | |
425 | |
426 | |
427 ngx_int_t | |
428 ngx_http_discard_body(ngx_http_request_t *r) | |
429 { | |
430 ssize_t size; | |
431 ngx_event_t *rev; | |
432 | |
673 | 433 if (r != r->main || r->discard_body) { |
633 | 434 return NGX_OK; |
435 } | |
436 | |
437 rev = r->connection->read; | |
438 | |
439 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http set discard body"); | |
440 | |
441 if (rev->timer_set) { | |
442 ngx_del_timer(rev); | |
443 } | |
444 | |
681 | 445 r->discard_body = 1; |
446 | |
633 | 447 if (r->headers_in.content_length_n <= 0) { |
448 return NGX_OK; | |
449 } | |
450 | |
451 size = r->header_in->last - r->header_in->pos; | |
452 | |
453 if (size) { | |
454 if (r->headers_in.content_length_n > size) { | |
455 r->headers_in.content_length_n -= size; | |
456 | |
457 } else { | |
663 | 458 r->header_in->pos += (size_t) r->headers_in.content_length_n; |
633 | 459 r->headers_in.content_length_n = 0; |
460 return NGX_OK; | |
461 } | |
462 } | |
463 | |
464 r->read_event_handler = ngx_http_read_discarded_body_handler; | |
465 | |
466 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { | |
467 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
468 } | |
469 | |
470 return ngx_http_read_discarded_body(r); | |
471 } | |
472 | |
473 | |
474 static void | |
475 ngx_http_read_discarded_body_handler(ngx_http_request_t *r) | |
476 { | |
477 ngx_int_t rc; | |
478 | |
479 rc = ngx_http_read_discarded_body(r); | |
480 | |
481 if (rc == NGX_AGAIN) { | |
482 if (ngx_handle_read_event(r->connection->read, 0) == NGX_ERROR) { | |
483 ngx_http_finalize_request(r, rc); | |
484 return; | |
485 } | |
486 } | |
487 | |
488 if (rc != NGX_OK) { | |
489 ngx_http_finalize_request(r, rc); | |
490 } | |
491 } | |
492 | |
493 | |
494 static ngx_int_t | |
495 ngx_http_read_discarded_body(ngx_http_request_t *r) | |
496 { | |
663 | 497 size_t size; |
498 ssize_t n; | |
633 | 499 u_char buffer[NGX_HTTP_DISCARD_BUFFER_SIZE]; |
500 | |
501 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
502 "http read discarded body"); | |
503 | |
504 if (r->headers_in.content_length_n == 0) { | |
505 return NGX_OK; | |
506 } | |
507 | |
663 | 508 size = (r->headers_in.content_length_n > NGX_HTTP_DISCARD_BUFFER_SIZE) ? |
509 NGX_HTTP_DISCARD_BUFFER_SIZE: | |
510 (size_t) r->headers_in.content_length_n; | |
633 | 511 |
512 n = r->connection->recv(r->connection, buffer, size); | |
513 | |
514 if (n == NGX_ERROR) { | |
515 | |
516 r->connection->error = 1; | |
517 | |
518 /* | |
519 * if a client request body is discarded then we already set | |
520 * some HTTP response code for client and we can ignore the error | |
521 */ | |
522 | |
523 return NGX_OK; | |
524 } | |
525 | |
526 if (n == NGX_AGAIN) { | |
527 return NGX_AGAIN; | |
528 } | |
529 | |
530 r->headers_in.content_length_n -= n; | |
531 | |
532 return NGX_OK; | |
533 } |