Mercurial > hg > nginx
annotate src/http/ngx_http_request_body.c @ 1112:3dcc3041b5bc
fix format
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Thu, 15 Feb 2007 14:13:24 +0000 |
| parents | 4d203f76b757 |
| children | 4e6903652363 |
| rev | line source |
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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_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); |
| 91 return NGX_OK; | |
| 92 } | |
| 93 | |
| 94 rb->post_handler = post_handler; | |
| 95 | |
| 96 /* | |
| 97 * set by ngx_pcalloc(): | |
| 98 * | |
| 99 * rb->bufs = NULL; | |
| 100 * rb->buf = NULL; | |
| 101 * rb->rest = 0; | |
| 102 */ | |
| 103 | |
| 633 | 104 preread = r->header_in->last - r->header_in->pos; |
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105 |
| 633 | 106 if (preread) { |
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107 |
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108 /* there is the pre-read part of the request body */ |
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109 |
| 633 | 110 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| 111 "http client request body preread %uz", preread); | |
| 112 | |
| 501 | 113 b = ngx_calloc_buf(r->pool); |
| 114 if (b == NULL) { | |
| 479 | 115 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 116 } | |
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117 |
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118 b->temporary = 1; |
| 633 | 119 b->start = r->header_in->pos; |
| 120 b->pos = r->header_in->pos; | |
| 121 b->last = r->header_in->last; | |
| 122 b->end = r->header_in->end; | |
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123 |
| 501 | 124 rb->bufs = ngx_alloc_chain_link(r->pool); |
| 125 if (rb->bufs == NULL) { | |
| 479 | 126 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 127 } | |
| 128 | |
| 129 rb->bufs->buf = b; | |
| 130 rb->bufs->next = NULL; | |
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131 |
| 667 | 132 rb->buf = b; |
| 133 | |
| 665 | 134 if ((off_t) preread >= r->headers_in.content_length_n) { |
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135 |
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136 /* the whole request body was pre-read */ |
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137 |
| 663 | 138 r->header_in->pos += (size_t) r->headers_in.content_length_n; |
| 475 | 139 r->request_length += r->headers_in.content_length_n; |
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140 |
| 633 | 141 if (r->request_body_in_file_only) { |
| 142 if (ngx_http_write_request_body(r, rb->bufs) != NGX_OK) { | |
| 143 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 144 } | |
| 145 } | |
| 146 | |
| 479 | 147 post_handler(r); |
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148 |
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149 return NGX_OK; |
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150 } |
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151 |
| 633 | 152 /* |
| 153 * to not consider the body as pipelined request in | |
| 154 * ngx_http_set_keepalive() | |
| 155 */ | |
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156 r->header_in->pos = r->header_in->last; |
| 633 | 157 |
| 158 r->request_length += preread; | |
| 159 | |
| 160 rb->rest = r->headers_in.content_length_n - preread; | |
| 161 | |
| 665 | 162 if (rb->rest <= (off_t) (b->end - b->last)) { |
| 633 | 163 |
| 164 /* the whole request body may be placed in r->header_in */ | |
| 165 | |
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166 rb->to_write = rb->bufs; |
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167 |
| 633 | 168 r->read_event_handler = ngx_http_read_client_request_body_handler; |
| 169 | |
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170 return ngx_http_do_read_client_request_body(r); |
| 633 | 171 } |
| 172 | |
| 173 next = &rb->bufs->next; | |
| 174 | |
| 175 } else { | |
| 176 b = NULL; | |
| 177 rb->rest = r->headers_in.content_length_n; | |
| 178 next = &rb->bufs; | |
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179 } |
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180 |
| 633 | 181 size = clcf->client_body_buffer_size; |
| 182 size += size >> 2; | |
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183 |
| 663 | 184 if (rb->rest < size) { |
| 185 size = (ssize_t) rb->rest; | |
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186 |
| 633 | 187 if (r->request_body_in_single_buf) { |
| 188 size += preread; | |
| 189 } | |
| 190 | |
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191 } else { |
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192 size = clcf->client_body_buffer_size; |
| 633 | 193 |
| 194 /* disable copying buffer for r->request_body_in_single_buf */ | |
| 195 b = NULL; | |
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196 } |
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197 |
| 501 | 198 rb->buf = ngx_create_temp_buf(r->pool, size); |
| 199 if (rb->buf == NULL) { | |
| 479 | 200 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 201 } | |
|
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202 |
| 501 | 203 cl = ngx_alloc_chain_link(r->pool); |
| 204 if (cl == NULL) { | |
| 479 | 205 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 206 } | |
|
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207 |
| 479 | 208 cl->buf = rb->buf; |
| 209 cl->next = NULL; | |
| 210 | |
| 633 | 211 if (b && r->request_body_in_single_buf) { |
| 212 size = b->last - b->pos; | |
| 213 ngx_memcpy(rb->buf->pos, b->pos, size); | |
| 214 rb->buf->last += size; | |
| 215 | |
| 216 next = &rb->bufs; | |
| 217 } | |
| 218 | |
| 219 *next = cl; | |
| 220 | |
| 221 if (r->request_body_in_file_only || r->request_body_in_single_buf) { | |
| 222 rb->to_write = rb->bufs; | |
|
160
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223 |
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224 } else { |
| 633 | 225 rb->to_write = rb->bufs->next ? rb->bufs->next : rb->bufs; |
|
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226 } |
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227 |
| 509 | 228 r->read_event_handler = ngx_http_read_client_request_body_handler; |
|
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229 |
|
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230 return ngx_http_do_read_client_request_body(r); |
|
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231 } |
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232 |
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233 |
| 501 | 234 static void |
| 509 | 235 ngx_http_read_client_request_body_handler(ngx_http_request_t *r) |
|
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236 { |
| 509 | 237 ngx_int_t rc; |
|
293
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238 |
| 509 | 239 if (r->connection->read->timedout) { |
| 577 | 240 r->connection->timedout = 1; |
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241 ngx_http_finalize_request(r, NGX_HTTP_REQUEST_TIME_OUT); |
|
299
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242 return; |
|
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243 } |
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244 |
| 509 | 245 rc = ngx_http_do_read_client_request_body(r); |
|
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246 |
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247 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { |
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248 ngx_http_finalize_request(r, rc); |
|
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249 } |
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250 } |
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251 |
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252 |
| 501 | 253 static ngx_int_t |
| 509 | 254 ngx_http_do_read_client_request_body(ngx_http_request_t *r) |
|
293
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255 { |
|
290
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256 size_t size; |
|
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257 ssize_t n; |
|
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258 ngx_buf_t *b; |
| 509 | 259 ngx_connection_t *c; |
| 479 | 260 ngx_http_request_body_t *rb; |
|
162
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261 ngx_http_core_loc_conf_t *clcf; |
|
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262 |
| 509 | 263 c = r->connection; |
| 479 | 264 rb = r->request_body; |
|
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265 |
|
292
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266 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
|
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267 "http read client request body"); |
|
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268 |
|
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269 for ( ;; ) { |
|
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270 for ( ;; ) { |
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271 if (rb->buf->last == rb->buf->end) { |
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272 |
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273 if (ngx_http_write_request_body(r, rb->to_write) != NGX_OK) { |
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274 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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275 } |
| 479 | 276 |
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277 rb->to_write = rb->bufs->next ? rb->bufs->next : rb->bufs; |
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278 rb->buf->last = rb->buf->start; |
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279 } |
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280 |
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281 size = rb->buf->end - rb->buf->last; |
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282 |
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283 if ((off_t) size > rb->rest) { |
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284 size = (size_t) rb->rest; |
|
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285 } |
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286 |
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287 n = c->recv(c, rb->buf->last, size); |
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288 |
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289 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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290 "http client request body recv %z", n); |
|
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291 |
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292 if (n == NGX_AGAIN) { |
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293 break; |
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294 } |
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295 |
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296 if (n == 0) { |
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297 ngx_log_error(NGX_LOG_INFO, c->log, 0, |
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298 "client closed prematurely connection"); |
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299 } |
|
292
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300 |
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301 if (n == 0 || n == NGX_ERROR) { |
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302 c->error = 1; |
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303 return NGX_HTTP_BAD_REQUEST; |
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304 } |
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305 |
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306 rb->buf->last += n; |
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307 rb->rest -= n; |
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308 r->request_length += n; |
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309 |
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310 if (rb->rest == 0) { |
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311 break; |
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312 } |
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313 |
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314 if (rb->buf->last < rb->buf->end) { |
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315 break; |
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316 } |
|
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317 } |
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318 |
|
293
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319 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 1112 | 320 "http client request body rest %O", rb->rest); |
|
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321 |
| 479 | 322 if (rb->rest == 0) { |
|
294
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|
323 break; |
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324 } |
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325 |
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326 if (!c->read->ready) { |
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327 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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328 ngx_add_timer(c->read, clcf->client_body_timeout); |
|
293
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329 |
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330 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) { |
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331 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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332 } |
| 573 | 333 |
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334 return NGX_AGAIN; |
| 573 | 335 } |
|
82
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336 } |
|
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|
337 |
| 573 | 338 if (c->read->timer_set) { |
| 339 ngx_del_timer(c->read); | |
| 340 } | |
| 341 | |
| 633 | 342 if (rb->temp_file || r->request_body_in_file_only) { |
|
82
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|
343 |
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160
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344 /* save the last part */ |
| 479 | 345 |
| 633 | 346 if (ngx_http_write_request_body(r, rb->to_write) != NGX_OK) { |
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347 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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348 } |
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349 |
| 501 | 350 b = ngx_calloc_buf(r->pool); |
| 351 if (b == NULL) { | |
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352 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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353 } |
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354 |
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343
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355 b->in_file = 1; |
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356 b->file_pos = 0; |
| 479 | 357 b->file_last = rb->temp_file->file.offset; |
| 358 b->file = &rb->temp_file->file; | |
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359 |
| 479 | 360 if (rb->bufs->next) { |
| 361 rb->bufs->next->buf = b; | |
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362 |
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363 } else { |
| 479 | 364 rb->bufs->buf = b; |
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365 } |
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366 } |
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367 |
| 633 | 368 if (r->request_body_in_file_only && rb->bufs->next) { |
| 369 rb->bufs = rb->bufs->next; | |
| 370 } | |
| 371 | |
| 479 | 372 rb->post_handler(r); |
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373 |
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374 return NGX_OK; |
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375 } |
| 633 | 376 |
| 377 | |
| 378 static ngx_int_t | |
| 379 ngx_http_write_request_body(ngx_http_request_t *r, ngx_chain_t *body) | |
| 380 { | |
| 381 ssize_t n; | |
| 382 ngx_temp_file_t *tf; | |
| 383 ngx_http_request_body_t *rb; | |
| 384 ngx_http_core_loc_conf_t *clcf; | |
| 385 | |
| 386 rb = r->request_body; | |
| 387 | |
| 388 if (rb->temp_file == NULL) { | |
| 389 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)); | |
| 390 if (tf == NULL) { | |
| 391 return NGX_ERROR; | |
| 392 } | |
| 393 | |
| 394 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
| 395 | |
| 396 tf->file.fd = NGX_INVALID_FILE; | |
| 397 tf->file.log = r->connection->log; | |
| 398 tf->path = clcf->client_body_temp_path; | |
| 399 tf->pool = r->pool; | |
| 400 tf->warn = "a client request body is buffered to a temporary file"; | |
| 637 | 401 tf->log_level = r->request_body_file_log_level; |
| 633 | 402 tf->persistent = r->request_body_in_persistent_file; |
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403 tf->clean = r->request_body_in_clean_file; |
| 633 | 404 |
| 405 if (r->request_body_file_group_access) { | |
| 1046 | 406 tf->access = 0660; |
| 633 | 407 } |
| 408 | |
| 409 rb->temp_file = tf; | |
| 410 } | |
| 411 | |
| 412 n = ngx_write_chain_to_temp_file(rb->temp_file, body); | |
| 413 | |
| 414 /* TODO: n == 0 or not complete and level event */ | |
| 415 | |
| 416 if (n == NGX_ERROR) { | |
| 417 return NGX_ERROR; | |
| 418 } | |
| 419 | |
| 420 rb->temp_file->offset += n; | |
| 421 | |
| 422 return NGX_OK; | |
| 423 } | |
| 424 | |
| 425 | |
| 426 ngx_int_t | |
| 427 ngx_http_discard_body(ngx_http_request_t *r) | |
| 428 { | |
| 429 ssize_t size; | |
| 430 ngx_event_t *rev; | |
| 431 | |
| 673 | 432 if (r != r->main || r->discard_body) { |
| 633 | 433 return NGX_OK; |
| 434 } | |
| 435 | |
| 436 rev = r->connection->read; | |
| 437 | |
| 438 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http set discard body"); | |
| 439 | |
| 440 if (rev->timer_set) { | |
| 441 ngx_del_timer(rev); | |
| 442 } | |
| 443 | |
| 681 | 444 r->discard_body = 1; |
| 445 | |
| 633 | 446 if (r->headers_in.content_length_n <= 0) { |
| 447 return NGX_OK; | |
| 448 } | |
| 449 | |
| 450 size = r->header_in->last - r->header_in->pos; | |
| 451 | |
| 452 if (size) { | |
| 453 if (r->headers_in.content_length_n > size) { | |
| 454 r->headers_in.content_length_n -= size; | |
| 455 | |
| 456 } else { | |
| 663 | 457 r->header_in->pos += (size_t) r->headers_in.content_length_n; |
| 633 | 458 r->headers_in.content_length_n = 0; |
| 459 return NGX_OK; | |
| 460 } | |
| 461 } | |
| 462 | |
| 463 r->read_event_handler = ngx_http_read_discarded_body_handler; | |
| 464 | |
| 465 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { | |
| 466 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 467 } | |
| 468 | |
| 469 return ngx_http_read_discarded_body(r); | |
| 470 } | |
| 471 | |
| 472 | |
| 473 static void | |
| 474 ngx_http_read_discarded_body_handler(ngx_http_request_t *r) | |
| 475 { | |
| 476 ngx_int_t rc; | |
| 477 | |
| 478 rc = ngx_http_read_discarded_body(r); | |
| 479 | |
| 480 if (rc == NGX_AGAIN) { | |
| 481 if (ngx_handle_read_event(r->connection->read, 0) == NGX_ERROR) { | |
| 482 ngx_http_finalize_request(r, rc); | |
| 483 return; | |
| 484 } | |
| 485 } | |
| 486 | |
| 487 if (rc != NGX_OK) { | |
| 488 ngx_http_finalize_request(r, rc); | |
| 489 } | |
| 490 } | |
| 491 | |
| 492 | |
| 493 static ngx_int_t | |
| 494 ngx_http_read_discarded_body(ngx_http_request_t *r) | |
| 495 { | |
| 663 | 496 size_t size; |
| 497 ssize_t n; | |
| 633 | 498 u_char buffer[NGX_HTTP_DISCARD_BUFFER_SIZE]; |
| 499 | |
| 500 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 501 "http read discarded body"); | |
| 502 | |
| 503 if (r->headers_in.content_length_n == 0) { | |
| 504 return NGX_OK; | |
| 505 } | |
| 506 | |
| 663 | 507 size = (r->headers_in.content_length_n > NGX_HTTP_DISCARD_BUFFER_SIZE) ? |
| 508 NGX_HTTP_DISCARD_BUFFER_SIZE: | |
| 509 (size_t) r->headers_in.content_length_n; | |
| 633 | 510 |
| 511 n = r->connection->recv(r->connection, buffer, size); | |
| 512 | |
| 513 if (n == NGX_ERROR) { | |
| 514 | |
| 515 r->connection->error = 1; | |
| 516 | |
| 517 /* | |
| 518 * if a client request body is discarded then we already set | |
| 519 * some HTTP response code for client and we can ignore the error | |
| 520 */ | |
| 521 | |
| 522 return NGX_OK; | |
| 523 } | |
| 524 | |
| 525 if (n == NGX_AGAIN) { | |
| 526 return NGX_AGAIN; | |
| 527 } | |
| 528 | |
| 529 r->headers_in.content_length_n -= n; | |
| 530 | |
| 531 return NGX_OK; | |
| 532 } |