0
|
1
|
|
2 /*
|
|
3 * Copyright (C) Igor Sysoev
|
|
4 */
|
|
5
|
|
6
|
|
7 #include <ngx_config.h>
|
|
8 #include <ngx_core.h>
|
|
9 #include <ngx_event.h>
|
|
10 #include <ngx_http.h>
|
|
11
|
|
12
|
58
|
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);
|
0
|
15
|
28
|
16 /*
|
|
17 * on completion ngx_http_read_client_request_body() adds to
|
|
18 * r->request_body->bufs one or two bufs:
|
|
19 * *) one memory buf that was preread in r->header_in;
|
|
20 * *) one memory or file buf that contains the rest of the body
|
|
21 */
|
0
|
22
|
50
|
23 ngx_int_t
|
|
24 ngx_http_read_client_request_body(ngx_http_request_t *r,
|
|
25 ngx_http_client_body_handler_pt post_handler)
|
28
|
26
|
0
|
27 {
|
|
28 ssize_t size;
|
|
29 ngx_buf_t *b;
|
|
30 ngx_chain_t *cl;
|
28
|
31 ngx_http_request_body_t *rb;
|
0
|
32 ngx_http_core_loc_conf_t *clcf;
|
|
33
|
86
|
34 if (r->request_body || r->discard_body) {
|
58
|
35 post_handler(r);
|
|
36 return NGX_OK;
|
|
37 }
|
|
38
|
50
|
39 rb = ngx_pcalloc(r->pool, sizeof(ngx_http_request_body_t));
|
|
40 if (rb == NULL) {
|
28
|
41 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
42 }
|
|
43
|
|
44 r->request_body = rb;
|
|
45
|
|
46 if (r->headers_in.content_length_n <= 0) {
|
|
47 post_handler(r);
|
|
48 return NGX_OK;
|
|
49 }
|
|
50
|
|
51 rb->post_handler = post_handler;
|
|
52
|
|
53 /*
|
|
54 * set by ngx_pcalloc():
|
|
55 *
|
|
56 * rb->bufs = NULL;
|
|
57 * rb->buf = NULL;
|
|
58 * rb->rest = 0;
|
|
59 */
|
|
60
|
0
|
61 size = r->header_in->last - r->header_in->pos;
|
|
62
|
|
63 if (size) {
|
|
64
|
|
65 /* there is the pre-read part of the request body */
|
|
66
|
50
|
67 b = ngx_calloc_buf(r->pool);
|
|
68 if (b == NULL) {
|
28
|
69 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
70 }
|
0
|
71
|
|
72 b->temporary = 1;
|
|
73 b->start = b->pos = r->header_in->pos;
|
|
74 b->end = b->last = r->header_in->last;
|
|
75
|
50
|
76 rb->bufs = ngx_alloc_chain_link(r->pool);
|
|
77 if (rb->bufs == NULL) {
|
28
|
78 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
79 }
|
|
80
|
|
81 rb->bufs->buf = b;
|
|
82 rb->bufs->next = NULL;
|
0
|
83
|
|
84 if (size >= r->headers_in.content_length_n) {
|
|
85
|
|
86 /* the whole request body was pre-read */
|
|
87
|
|
88 r->header_in->pos += r->headers_in.content_length_n;
|
24
|
89 r->request_length += r->headers_in.content_length_n;
|
0
|
90
|
28
|
91 post_handler(r);
|
0
|
92
|
|
93 return NGX_OK;
|
|
94 }
|
|
95
|
|
96 r->header_in->pos = r->header_in->last;
|
24
|
97 r->request_length += size;
|
0
|
98 }
|
|
99
|
|
100
|
|
101 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
102
|
28
|
103 rb->rest = r->headers_in.content_length_n - size;
|
0
|
104
|
28
|
105 if (rb->rest < clcf->client_body_buffer_size
|
0
|
106 + (clcf->client_body_buffer_size >> 2))
|
|
107 {
|
28
|
108 size = rb->rest;
|
0
|
109
|
|
110 } else {
|
|
111 size = clcf->client_body_buffer_size;
|
|
112 }
|
|
113
|
50
|
114 rb->buf = ngx_create_temp_buf(r->pool, size);
|
|
115 if (rb->buf == NULL) {
|
28
|
116 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
117 }
|
0
|
118
|
50
|
119 cl = ngx_alloc_chain_link(r->pool);
|
|
120 if (cl == NULL) {
|
28
|
121 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
122 }
|
0
|
123
|
28
|
124 cl->buf = rb->buf;
|
|
125 cl->next = NULL;
|
|
126
|
|
127 if (rb->bufs) {
|
|
128 rb->bufs->next = cl;
|
0
|
129
|
|
130 } else {
|
28
|
131 rb->bufs = cl;
|
0
|
132 }
|
|
133
|
58
|
134 r->read_event_handler = ngx_http_read_client_request_body_handler;
|
0
|
135
|
58
|
136 return ngx_http_do_read_client_request_body(r);
|
0
|
137 }
|
|
138
|
|
139
|
50
|
140 static void
|
58
|
141 ngx_http_read_client_request_body_handler(ngx_http_request_t *r)
|
0
|
142 {
|
58
|
143 ngx_int_t rc;
|
0
|
144
|
58
|
145 if (r->connection->read->timedout) {
|
126
|
146 r->connection->timedout = 1;
|
0
|
147 ngx_http_finalize_request(r, NGX_HTTP_REQUEST_TIME_OUT);
|
|
148 return;
|
|
149 }
|
|
150
|
58
|
151 rc = ngx_http_do_read_client_request_body(r);
|
0
|
152
|
|
153 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
|
|
154 ngx_http_finalize_request(r, rc);
|
|
155 }
|
|
156 }
|
|
157
|
|
158
|
50
|
159 static ngx_int_t
|
58
|
160 ngx_http_do_read_client_request_body(ngx_http_request_t *r)
|
0
|
161 {
|
|
162 size_t size;
|
|
163 ssize_t n;
|
|
164 ngx_buf_t *b;
|
28
|
165 ngx_temp_file_t *tf;
|
58
|
166 ngx_connection_t *c;
|
28
|
167 ngx_http_request_body_t *rb;
|
0
|
168 ngx_http_core_loc_conf_t *clcf;
|
|
169
|
58
|
170 c = r->connection;
|
28
|
171 rb = r->request_body;
|
0
|
172
|
|
173 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
174 "http read client request body");
|
|
175
|
|
176 for ( ;; ) {
|
28
|
177 if (rb->buf->last == rb->buf->end) {
|
|
178
|
|
179 if (rb->temp_file == NULL) {
|
50
|
180 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
181 if (tf == NULL) {
|
28
|
182 return NGX_ERROR;
|
|
183 }
|
|
184
|
|
185 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
186
|
|
187 tf->file.fd = NGX_INVALID_FILE;
|
|
188 tf->file.log = r->connection->log;
|
|
189 tf->path = clcf->client_body_temp_path;
|
|
190 tf->pool = r->pool;
|
|
191 tf->warn = "a client request body is buffered "
|
|
192 "to a temporary file";
|
|
193
|
|
194 rb->temp_file = tf;
|
|
195
|
|
196 }
|
|
197
|
|
198 n = ngx_write_chain_to_temp_file(rb->temp_file,
|
|
199 rb->bufs->next ? rb->bufs->next:
|
|
200 rb->bufs);
|
0
|
201
|
|
202 /* TODO: n == 0 or not complete and level event */
|
|
203
|
|
204 if (n == NGX_ERROR) {
|
|
205 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
206 }
|
|
207
|
28
|
208 rb->temp_file->offset += n;
|
|
209 rb->buf->last = rb->buf->start;
|
0
|
210 }
|
|
211
|
28
|
212 size = rb->buf->end - rb->buf->last;
|
0
|
213
|
28
|
214 if (size > rb->rest) {
|
|
215 size = rb->rest;
|
0
|
216 }
|
|
217
|
28
|
218 n = c->recv(c, rb->buf->last, size);
|
0
|
219
|
|
220 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
10
|
221 "http client request body recv %z", n);
|
0
|
222
|
|
223 if (n == NGX_AGAIN) {
|
122
|
224 break;
|
0
|
225 }
|
|
226
|
|
227 if (n == 0) {
|
|
228 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
229 "client closed prematurely connection");
|
|
230 }
|
|
231
|
|
232 if (n == 0 || n == NGX_ERROR) {
|
76
|
233 c->closed = 1;
|
0
|
234 return NGX_HTTP_BAD_REQUEST;
|
|
235 }
|
|
236
|
28
|
237 rb->buf->last += n;
|
|
238 rb->rest -= n;
|
24
|
239 r->request_length += n;
|
0
|
240
|
28
|
241 if (rb->rest == 0) {
|
0
|
242 break;
|
|
243 }
|
|
244
|
28
|
245 if (rb->buf->last < rb->buf->end) {
|
0
|
246 break;
|
|
247 }
|
|
248 }
|
|
249
|
|
250 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
28
|
251 "http client request body rest %uz", rb->rest);
|
0
|
252
|
28
|
253 if (rb->rest) {
|
122
|
254 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
255 ngx_add_timer(c->read, clcf->client_body_timeout);
|
|
256
|
|
257 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
258 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
259 }
|
|
260
|
0
|
261 return NGX_AGAIN;
|
|
262 }
|
|
263
|
122
|
264 if (c->read->timer_set) {
|
|
265 ngx_del_timer(c->read);
|
|
266 }
|
|
267
|
28
|
268 if (rb->temp_file) {
|
0
|
269
|
|
270 /* save the last part */
|
28
|
271
|
|
272 n = ngx_write_chain_to_temp_file(rb->temp_file,
|
|
273 rb->bufs->next ? rb->bufs->next:
|
|
274 rb->bufs);
|
0
|
275
|
|
276 /* TODO: n == 0 or not complete and level event */
|
|
277
|
|
278 if (n == NGX_ERROR) {
|
|
279 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
280 }
|
|
281
|
50
|
282 b = ngx_calloc_buf(r->pool);
|
|
283 if (b == NULL) {
|
0
|
284 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
285 }
|
|
286
|
|
287 b->in_file = 1;
|
|
288 b->file_pos = 0;
|
28
|
289 b->file_last = rb->temp_file->file.offset;
|
|
290 b->file = &rb->temp_file->file;
|
0
|
291
|
28
|
292 if (rb->bufs->next) {
|
|
293 rb->bufs->next->buf = b;
|
0
|
294
|
|
295 } else {
|
28
|
296 rb->bufs->buf = b;
|
0
|
297 }
|
|
298 }
|
|
299
|
28
|
300 rb->post_handler(r);
|
0
|
301
|
|
302 return NGX_OK;
|
|
303 }
|