Mercurial > hg > nginx-quic
annotate src/http/ngx_http_request_body.c @ 1266:d614e361d2f8
release-0.6.1 tag
author | Igor Sysoev <igor@sysoev.ru> |
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date | Sun, 17 Jun 2007 19:13:34 +0000 |
parents | 3dcc3041b5bc |
children | 4e6903652363 |
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_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 */ | |
162
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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; |
160
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226 } |
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227 |
509 | 228 r->read_event_handler = ngx_http_read_client_request_body_handler; |
82
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229 |
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230 return ngx_http_do_read_client_request_body(r); |
82
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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) |
82
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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); |
293
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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); |
293
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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; |
343
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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; |
82
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262 |
509 | 263 c = r->connection; |
479 | 264 rb = r->request_body; |
82
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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; |
292
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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); |
82
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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 } |
292
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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); |
292
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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 |
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) { |
293
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347 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
162
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diff
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348 } |
160
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349 |
501 | 350 b = ngx_calloc_buf(r->pool); |
351 if (b == NULL) { | |
293
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352 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
82
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353 } |
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354 |
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; | |
160
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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 } |