50
|
1
|
|
2 /*
|
|
3 * Copyright (C) Igor Sysoev
|
|
4 */
|
|
5
|
|
6
|
|
7 #include <ngx_config.h>
|
|
8 #include <ngx_core.h>
|
|
9 #include <ngx_http.h>
|
|
10
|
|
11
|
|
12 /*
|
|
13 * the single part format:
|
|
14 *
|
|
15 * "HTTP/1.0 206 Partial Content" CRLF
|
|
16 * ... header ...
|
|
17 * "Content-Type: image/jpeg" CRLF
|
|
18 * "Content-Length: SIZE" CRLF
|
|
19 * "Content-Range: bytes START-END/SIZE" CRLF
|
|
20 * CRLF
|
|
21 * ... data ...
|
|
22 *
|
|
23 *
|
|
24 * the mutlipart format:
|
|
25 *
|
|
26 * "HTTP/1.0 206 Partial Content" CRLF
|
|
27 * ... header ...
|
|
28 * "Content-Type: multipart/byteranges; boundary=0123456789" CRLF
|
|
29 * CRLF
|
|
30 * CRLF
|
|
31 * "--0123456789" CRLF
|
|
32 * "Content-Type: image/jpeg" CRLF
|
|
33 * "Content-Range: bytes START0-END0/SIZE" CRLF
|
|
34 * CRLF
|
|
35 * ... data ...
|
|
36 * CRLF
|
|
37 * "--0123456789" CRLF
|
|
38 * "Content-Type: image/jpeg" CRLF
|
|
39 * "Content-Range: bytes START1-END1/SIZE" CRLF
|
|
40 * CRLF
|
|
41 * ... data ...
|
|
42 * CRLF
|
|
43 * "--0123456789--" CRLF
|
|
44 */
|
|
45
|
|
46
|
|
47 typedef struct {
|
272
|
48 off_t start;
|
|
49 off_t end;
|
|
50 ngx_str_t content_range;
|
|
51 } ngx_http_range_t;
|
|
52
|
|
53
|
|
54 typedef struct {
|
|
55 off_t offset;
|
|
56 ngx_str_t boundary_header;
|
|
57 ngx_array_t ranges;
|
50
|
58 } ngx_http_range_filter_ctx_t;
|
|
59
|
|
60
|
230
|
61 static ngx_int_t ngx_http_range_header_filter_init(ngx_conf_t *cf);
|
|
62 static ngx_int_t ngx_http_range_body_filter_init(ngx_conf_t *cf);
|
50
|
63
|
|
64
|
|
65 static ngx_http_module_t ngx_http_range_header_filter_module_ctx = {
|
58
|
66 NULL, /* preconfiguration */
|
230
|
67 ngx_http_range_header_filter_init, /* postconfiguration */
|
50
|
68
|
|
69 NULL, /* create main configuration */
|
|
70 NULL, /* init main configuration */
|
|
71
|
|
72 NULL, /* create server configuration */
|
|
73 NULL, /* merge server configuration */
|
|
74
|
|
75 NULL, /* create location configuration */
|
|
76 NULL, /* merge location configuration */
|
|
77 };
|
|
78
|
|
79
|
|
80 ngx_module_t ngx_http_range_header_filter_module = {
|
58
|
81 NGX_MODULE_V1,
|
50
|
82 &ngx_http_range_header_filter_module_ctx, /* module context */
|
|
83 NULL, /* module directives */
|
|
84 NGX_HTTP_MODULE, /* module type */
|
90
|
85 NULL, /* init master */
|
230
|
86 NULL, /* init module */
|
90
|
87 NULL, /* init process */
|
|
88 NULL, /* init thread */
|
|
89 NULL, /* exit thread */
|
|
90 NULL, /* exit process */
|
|
91 NULL, /* exit master */
|
|
92 NGX_MODULE_V1_PADDING
|
50
|
93 };
|
|
94
|
|
95
|
|
96 static ngx_http_module_t ngx_http_range_body_filter_module_ctx = {
|
58
|
97 NULL, /* preconfiguration */
|
230
|
98 ngx_http_range_body_filter_init, /* postconfiguration */
|
50
|
99
|
|
100 NULL, /* create main configuration */
|
|
101 NULL, /* init main configuration */
|
|
102
|
|
103 NULL, /* create server configuration */
|
|
104 NULL, /* merge server configuration */
|
|
105
|
|
106 NULL, /* create location configuration */
|
|
107 NULL, /* merge location configuration */
|
|
108 };
|
|
109
|
|
110
|
|
111 ngx_module_t ngx_http_range_body_filter_module = {
|
58
|
112 NGX_MODULE_V1,
|
50
|
113 &ngx_http_range_body_filter_module_ctx, /* module context */
|
|
114 NULL, /* module directives */
|
|
115 NGX_HTTP_MODULE, /* module type */
|
90
|
116 NULL, /* init master */
|
230
|
117 NULL, /* init module */
|
90
|
118 NULL, /* init process */
|
|
119 NULL, /* init thread */
|
|
120 NULL, /* exit thread */
|
|
121 NULL, /* exit process */
|
|
122 NULL, /* exit master */
|
|
123 NGX_MODULE_V1_PADDING
|
50
|
124 };
|
|
125
|
|
126
|
|
127 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
|
|
128 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
|
|
129
|
|
130
|
|
131 static ngx_int_t
|
|
132 ngx_http_range_header_filter(ngx_http_request_t *r)
|
|
133 {
|
|
134 u_char *p;
|
|
135 size_t len;
|
|
136 off_t start, end;
|
346
|
137 time_t if_range;
|
50
|
138 ngx_int_t rc;
|
|
139 ngx_uint_t suffix, i;
|
|
140 ngx_atomic_uint_t boundary;
|
|
141 ngx_table_elt_t *content_range;
|
|
142 ngx_http_range_t *range;
|
|
143 ngx_http_range_filter_ctx_t *ctx;
|
|
144
|
|
145 if (r->http_version < NGX_HTTP_VERSION_10
|
|
146 || r->headers_out.status != NGX_HTTP_OK
|
146
|
147 || r != r->main
|
50
|
148 || r->headers_out.content_length_n == -1
|
130
|
149 || !r->allow_ranges)
|
50
|
150 {
|
|
151 return ngx_http_next_header_filter(r);
|
|
152 }
|
|
153
|
|
154 if (r->headers_in.range == NULL
|
|
155 || r->headers_in.range->value.len < 7
|
286
|
156 || ngx_strncasecmp(r->headers_in.range->value.data,
|
|
157 (u_char *) "bytes=", 6)
|
|
158 != 0)
|
50
|
159 {
|
346
|
160 goto next_filter;
|
|
161 }
|
|
162
|
|
163 if (r->headers_in.if_range && r->headers_out.last_modified_time != -1) {
|
|
164
|
|
165 if_range = ngx_http_parse_time(r->headers_in.if_range->value.data,
|
|
166 r->headers_in.if_range->value.len);
|
50
|
167
|
346
|
168 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
169 "http ir:%d lm:%d",
|
|
170 if_range, r->headers_out.last_modified_time);
|
50
|
171
|
346
|
172 if (if_range != r->headers_out.last_modified_time) {
|
|
173 goto next_filter;
|
|
174 }
|
50
|
175 }
|
|
176
|
272
|
177 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_range_filter_ctx_t));
|
|
178 if (ctx == NULL) {
|
|
179 return NGX_ERROR;
|
|
180 }
|
|
181
|
|
182 if (ngx_array_init(&ctx->ranges, r->pool, 1, sizeof(ngx_http_range_t))
|
|
183 == NGX_ERROR)
|
50
|
184 {
|
|
185 return NGX_ERROR;
|
|
186 }
|
|
187
|
|
188 rc = 0;
|
|
189 range = NULL;
|
|
190 p = r->headers_in.range->value.data + 6;
|
|
191
|
|
192 for ( ;; ) {
|
|
193 start = 0;
|
|
194 end = 0;
|
|
195 suffix = 0;
|
|
196
|
|
197 while (*p == ' ') { p++; }
|
|
198
|
|
199 if (*p != '-') {
|
|
200 if (*p < '0' || *p > '9') {
|
|
201 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
|
|
202 break;
|
|
203 }
|
|
204
|
|
205 while (*p >= '0' && *p <= '9') {
|
|
206 start = start * 10 + *p++ - '0';
|
|
207 }
|
|
208
|
|
209 while (*p == ' ') { p++; }
|
|
210
|
|
211 if (*p++ != '-') {
|
|
212 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
|
|
213 break;
|
|
214 }
|
|
215
|
|
216 if (start >= r->headers_out.content_length_n) {
|
|
217 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
|
|
218 break;
|
|
219 }
|
|
220
|
|
221 while (*p == ' ') { p++; }
|
|
222
|
|
223 if (*p == ',' || *p == '\0') {
|
272
|
224 range = ngx_array_push(&ctx->ranges);
|
50
|
225 if (range == NULL) {
|
|
226 return NGX_ERROR;
|
|
227 }
|
|
228
|
|
229 range->start = start;
|
|
230 range->end = r->headers_out.content_length_n;
|
|
231
|
|
232 if (*p++ != ',') {
|
|
233 break;
|
|
234 }
|
|
235
|
|
236 continue;
|
|
237 }
|
|
238
|
|
239 } else {
|
|
240 suffix = 1;
|
|
241 p++;
|
|
242 }
|
|
243
|
|
244 if (*p < '0' || *p > '9') {
|
|
245 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
|
|
246 break;
|
|
247 }
|
|
248
|
|
249 while (*p >= '0' && *p <= '9') {
|
|
250 end = end * 10 + *p++ - '0';
|
|
251 }
|
|
252
|
|
253 while (*p == ' ') { p++; }
|
|
254
|
|
255 if (*p != ',' && *p != '\0') {
|
|
256 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
|
|
257 break;
|
|
258 }
|
|
259
|
|
260 if (suffix) {
|
|
261 start = r->headers_out.content_length_n - end;
|
|
262 end = r->headers_out.content_length_n - 1;
|
|
263 }
|
|
264
|
|
265 if (start > end) {
|
|
266 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
|
|
267 break;
|
|
268 }
|
|
269
|
272
|
270 range = ngx_array_push(&ctx->ranges);
|
50
|
271 if (range == NULL) {
|
|
272 return NGX_ERROR;
|
|
273 }
|
|
274
|
|
275 range->start = start;
|
|
276
|
|
277 if (end >= r->headers_out.content_length_n) {
|
|
278 /*
|
|
279 * Download Accelerator sends the last byte position
|
|
280 * that equals to the file length
|
|
281 */
|
|
282 range->end = r->headers_out.content_length_n;
|
|
283
|
|
284 } else {
|
|
285 range->end = end + 1;
|
|
286 }
|
|
287
|
|
288 if (*p++ != ',') {
|
|
289 break;
|
|
290 }
|
|
291 }
|
|
292
|
|
293 if (rc) {
|
|
294
|
|
295 /* rc == NGX_HTTP_RANGE_NOT_SATISFIABLE */
|
|
296
|
|
297 r->headers_out.status = rc;
|
|
298
|
|
299 content_range = ngx_list_push(&r->headers_out.headers);
|
|
300 if (content_range == NULL) {
|
|
301 return NGX_ERROR;
|
|
302 }
|
|
303
|
|
304 r->headers_out.content_range = content_range;
|
|
305
|
58
|
306 content_range->hash = 1;
|
50
|
307 content_range->key.len = sizeof("Content-Range") - 1;
|
|
308 content_range->key.data = (u_char *) "Content-Range";
|
|
309
|
382
|
310 content_range->value.data = ngx_pnalloc(r->pool,
|
50
|
311 sizeof("bytes */") - 1 + NGX_OFF_T_LEN);
|
|
312 if (content_range->value.data == NULL) {
|
|
313 return NGX_ERROR;
|
|
314 }
|
|
315
|
|
316 content_range->value.len = ngx_sprintf(content_range->value.data,
|
|
317 "bytes */%O",
|
|
318 r->headers_out.content_length_n)
|
|
319 - content_range->value.data;
|
|
320
|
126
|
321 ngx_http_clear_content_length(r);
|
50
|
322
|
|
323 return rc;
|
|
324 }
|
|
325
|
272
|
326 ngx_http_set_ctx(r, ctx, ngx_http_range_body_filter_module);
|
|
327
|
50
|
328 r->headers_out.status = NGX_HTTP_PARTIAL_CONTENT;
|
|
329
|
272
|
330 if (ctx->ranges.nelts == 1) {
|
50
|
331
|
|
332 content_range = ngx_list_push(&r->headers_out.headers);
|
|
333 if (content_range == NULL) {
|
|
334 return NGX_ERROR;
|
|
335 }
|
|
336
|
|
337 r->headers_out.content_range = content_range;
|
|
338
|
58
|
339 content_range->hash = 1;
|
50
|
340 content_range->key.len = sizeof("Content-Range") - 1;
|
|
341 content_range->key.data = (u_char *) "Content-Range";
|
|
342
|
|
343 content_range->value.data =
|
382
|
344 ngx_pnalloc(r->pool, sizeof("bytes -/") - 1 + 3 * NGX_OFF_T_LEN);
|
50
|
345 if (content_range->value.data == NULL) {
|
|
346 return NGX_ERROR;
|
|
347 }
|
|
348
|
|
349 /* "Content-Range: bytes SSSS-EEEE/TTTT" header */
|
|
350
|
|
351 content_range->value.len = ngx_sprintf(content_range->value.data,
|
|
352 "bytes %O-%O/%O",
|
|
353 range->start, range->end - 1,
|
|
354 r->headers_out.content_length_n)
|
|
355 - content_range->value.data;
|
|
356
|
|
357 r->headers_out.content_length_n = range->end - range->start;
|
|
358
|
272
|
359 if (r->headers_out.content_length) {
|
|
360 r->headers_out.content_length->hash = 0;
|
|
361 r->headers_out.content_length = NULL;
|
|
362 }
|
|
363
|
50
|
364 return ngx_http_next_header_filter(r);
|
|
365 }
|
|
366
|
|
367
|
|
368 /* TODO: what if no content_type ?? */
|
|
369
|
|
370 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN
|
|
371 + sizeof(CRLF "Content-Type: ") - 1
|
58
|
372 + r->headers_out.content_type.len
|
50
|
373 + sizeof(CRLF "Content-Range: bytes ") - 1;
|
|
374
|
|
375 if (r->headers_out.charset.len) {
|
|
376 len += sizeof("; charset=") - 1 + r->headers_out.charset.len;
|
|
377 }
|
|
378
|
382
|
379 ctx->boundary_header.data = ngx_pnalloc(r->pool, len);
|
50
|
380 if (ctx->boundary_header.data == NULL) {
|
|
381 return NGX_ERROR;
|
|
382 }
|
|
383
|
|
384 boundary = ngx_next_temp_number(0);
|
|
385
|
|
386 /*
|
|
387 * The boundary header of the range:
|
|
388 * CRLF
|
|
389 * "--0123456789" CRLF
|
|
390 * "Content-Type: image/jpeg" CRLF
|
|
391 * "Content-Range: bytes "
|
|
392 */
|
|
393
|
|
394 if (r->headers_out.charset.len) {
|
|
395 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data,
|
|
396 CRLF "--%0muA" CRLF
|
|
397 "Content-Type: %V; charset=%V" CRLF
|
|
398 "Content-Range: bytes ",
|
|
399 boundary,
|
58
|
400 &r->headers_out.content_type,
|
50
|
401 &r->headers_out.charset)
|
|
402 - ctx->boundary_header.data;
|
|
403
|
|
404 r->headers_out.charset.len = 0;
|
|
405
|
|
406 } else {
|
|
407 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data,
|
|
408 CRLF "--%0muA" CRLF
|
|
409 "Content-Type: %V" CRLF
|
|
410 "Content-Range: bytes ",
|
|
411 boundary,
|
58
|
412 &r->headers_out.content_type)
|
50
|
413 - ctx->boundary_header.data;
|
|
414 }
|
|
415
|
58
|
416 r->headers_out.content_type.data =
|
382
|
417 ngx_pnalloc(r->pool,
|
|
418 sizeof("Content-Type: multipart/byteranges; boundary=") - 1
|
|
419 + NGX_ATOMIC_T_LEN);
|
50
|
420
|
58
|
421 if (r->headers_out.content_type.data == NULL) {
|
50
|
422 return NGX_ERROR;
|
|
423 }
|
|
424
|
|
425 /* "Content-Type: multipart/byteranges; boundary=0123456789" */
|
|
426
|
58
|
427 r->headers_out.content_type.len =
|
|
428 ngx_sprintf(r->headers_out.content_type.data,
|
50
|
429 "multipart/byteranges; boundary=%0muA",
|
|
430 boundary)
|
58
|
431 - r->headers_out.content_type.data;
|
50
|
432
|
|
433
|
|
434 /* the size of the last boundary CRLF "--0123456789--" CRLF */
|
|
435
|
|
436 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN + sizeof("--" CRLF) - 1;
|
|
437
|
272
|
438 range = ctx->ranges.elts;
|
|
439 for (i = 0; i < ctx->ranges.nelts; i++) {
|
50
|
440
|
|
441 /* the size of the range: "SSSS-EEEE/TTTT" CRLF CRLF */
|
|
442
|
|
443 range[i].content_range.data =
|
382
|
444 ngx_pnalloc(r->pool, 3 * NGX_OFF_T_LEN + 2 + 4);
|
50
|
445
|
|
446 if (range[i].content_range.data == NULL) {
|
|
447 return NGX_ERROR;
|
|
448 }
|
|
449
|
|
450 range[i].content_range.len = ngx_sprintf(range[i].content_range.data,
|
|
451 "%O-%O/%O" CRLF CRLF,
|
|
452 range[i].start, range[i].end - 1,
|
|
453 r->headers_out.content_length_n)
|
|
454 - range[i].content_range.data;
|
|
455
|
|
456 len += ctx->boundary_header.len + range[i].content_range.len
|
|
457 + (size_t) (range[i].end - range[i].start);
|
|
458 }
|
|
459
|
|
460 r->headers_out.content_length_n = len;
|
272
|
461
|
|
462 if (r->headers_out.content_length) {
|
|
463 r->headers_out.content_length->hash = 0;
|
|
464 r->headers_out.content_length = NULL;
|
|
465 }
|
50
|
466
|
|
467 return ngx_http_next_header_filter(r);
|
346
|
468
|
|
469 next_filter:
|
|
470
|
|
471 r->headers_out.accept_ranges = ngx_list_push(&r->headers_out.headers);
|
|
472 if (r->headers_out.accept_ranges == NULL) {
|
|
473 return NGX_ERROR;
|
|
474 }
|
|
475
|
|
476 r->headers_out.accept_ranges->hash = 1;
|
|
477 r->headers_out.accept_ranges->key.len = sizeof("Accept-Ranges") - 1;
|
|
478 r->headers_out.accept_ranges->key.data = (u_char *) "Accept-Ranges";
|
|
479 r->headers_out.accept_ranges->value.len = sizeof("bytes") - 1;
|
|
480 r->headers_out.accept_ranges->value.data = (u_char *) "bytes";
|
|
481
|
|
482 return ngx_http_next_header_filter(r);
|
50
|
483 }
|
|
484
|
|
485
|
|
486 static ngx_int_t
|
|
487 ngx_http_range_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
|
|
488 {
|
272
|
489 off_t start, last;
|
|
490 ngx_buf_t *b, *buf;
|
50
|
491 ngx_uint_t i;
|
|
492 ngx_chain_t *out, *hcl, *rcl, *dcl, **ll;
|
|
493 ngx_http_range_t *range;
|
|
494 ngx_http_range_filter_ctx_t *ctx;
|
|
495
|
272
|
496 if (in == NULL) {
|
|
497 return ngx_http_next_body_filter(r, in);
|
|
498 }
|
|
499
|
|
500 ctx = ngx_http_get_module_ctx(r, ngx_http_range_body_filter_module);
|
|
501
|
|
502 if (ctx == NULL) {
|
|
503 return ngx_http_next_body_filter(r, in);
|
|
504 }
|
|
505
|
|
506 buf = in->buf;
|
|
507
|
|
508 if (ngx_buf_special(in->buf)) {
|
50
|
509 return ngx_http_next_body_filter(r, in);
|
|
510 }
|
|
511
|
272
|
512 if (ctx->offset) {
|
|
513 goto overlapped;
|
|
514 }
|
|
515
|
|
516 range = ctx->ranges.elts;
|
|
517
|
|
518 if (!buf->last_buf) {
|
|
519
|
|
520 if (buf->in_file) {
|
|
521 start = buf->file_pos + ctx->offset;
|
|
522 last = buf->file_last + ctx->offset;
|
|
523
|
|
524 } else {
|
|
525 start = buf->pos - buf->start + ctx->offset;
|
|
526 last = buf->last - buf->start + ctx->offset;
|
|
527 }
|
|
528
|
|
529 for (i = 0; i < ctx->ranges.nelts; i++) {
|
|
530 if (start > range[i].start || last < range[i].end) {
|
|
531 goto overlapped;
|
|
532 }
|
|
533 }
|
|
534 }
|
|
535
|
50
|
536 /*
|
272
|
537 * the optimized version for the responses
|
|
538 * that are passed in the single buffer
|
50
|
539 */
|
|
540
|
272
|
541 ctx->offset = ngx_buf_size(buf);
|
|
542
|
|
543 if (ctx->ranges.nelts == 1) {
|
50
|
544
|
272
|
545 if (buf->in_file) {
|
|
546 buf->file_pos = range->start;
|
|
547 buf->file_last = range->end;
|
|
548 }
|
50
|
549
|
272
|
550 if (ngx_buf_in_memory(buf)) {
|
|
551 buf->pos = buf->start + (size_t) range->start;
|
|
552 buf->last = buf->start + (size_t) range->end;
|
50
|
553 }
|
|
554
|
272
|
555 return ngx_http_next_body_filter(r, in);
|
|
556 }
|
50
|
557
|
272
|
558 ll = &out;
|
|
559
|
|
560 for (i = 0; i < ctx->ranges.nelts; i++) {
|
50
|
561
|
272
|
562 /*
|
|
563 * The boundary header of the range:
|
|
564 * CRLF
|
|
565 * "--0123456789" CRLF
|
|
566 * "Content-Type: image/jpeg" CRLF
|
|
567 * "Content-Range: bytes "
|
|
568 */
|
50
|
569
|
272
|
570 b = ngx_calloc_buf(r->pool);
|
|
571 if (b == NULL) {
|
|
572 return NGX_ERROR;
|
|
573 }
|
50
|
574
|
272
|
575 b->memory = 1;
|
|
576 b->pos = ctx->boundary_header.data;
|
|
577 b->last = ctx->boundary_header.data + ctx->boundary_header.len;
|
50
|
578
|
272
|
579 hcl = ngx_alloc_chain_link(r->pool);
|
|
580 if (hcl == NULL) {
|
|
581 return NGX_ERROR;
|
|
582 }
|
50
|
583
|
272
|
584 hcl->buf = b;
|
50
|
585
|
|
586
|
272
|
587 /* "SSSS-EEEE/TTTT" CRLF CRLF */
|
50
|
588
|
|
589 b = ngx_calloc_buf(r->pool);
|
|
590 if (b == NULL) {
|
|
591 return NGX_ERROR;
|
|
592 }
|
|
593
|
|
594 b->temporary = 1;
|
272
|
595 b->pos = range[i].content_range.data;
|
|
596 b->last = range[i].content_range.data + range[i].content_range.len;
|
|
597
|
|
598 rcl = ngx_alloc_chain_link(r->pool);
|
|
599 if (rcl == NULL) {
|
|
600 return NGX_ERROR;
|
|
601 }
|
|
602
|
|
603 rcl->buf = b;
|
|
604
|
|
605
|
|
606 /* the range data */
|
|
607
|
|
608 b = ngx_calloc_buf(r->pool);
|
|
609 if (b == NULL) {
|
|
610 return NGX_ERROR;
|
|
611 }
|
50
|
612
|
272
|
613 b->in_file = buf->in_file;
|
|
614 b->temporary = buf->temporary;
|
|
615 b->memory = buf->memory;
|
|
616 b->mmap = buf->mmap;
|
|
617 b->file = buf->file;
|
|
618
|
|
619 if (buf->in_file) {
|
282
|
620 b->file_pos = range[i].start;
|
|
621 b->file_last = range[i].end;
|
272
|
622 }
|
|
623
|
|
624 if (ngx_buf_in_memory(buf)) {
|
282
|
625 b->pos = buf->start + (size_t) range[i].start;
|
|
626 b->last = buf->start + (size_t) range[i].end;
|
272
|
627 }
|
|
628
|
|
629 dcl = ngx_alloc_chain_link(r->pool);
|
|
630 if (dcl == NULL) {
|
50
|
631 return NGX_ERROR;
|
|
632 }
|
|
633
|
272
|
634 dcl->buf = b;
|
50
|
635
|
|
636 *ll = hcl;
|
272
|
637 hcl->next = rcl;
|
|
638 rcl->next = dcl;
|
|
639 ll = &dcl->next;
|
|
640 }
|
50
|
641
|
272
|
642 /* the last boundary CRLF "--0123456789--" CRLF */
|
|
643
|
|
644 b = ngx_calloc_buf(r->pool);
|
|
645 if (b == NULL) {
|
|
646 return NGX_ERROR;
|
|
647 }
|
|
648
|
|
649 b->temporary = 1;
|
|
650 b->last_buf = 1;
|
|
651
|
382
|
652 b->pos = ngx_pnalloc(r->pool, sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN
|
|
653 + sizeof("--" CRLF) - 1);
|
272
|
654 if (b->pos == NULL) {
|
|
655 return NGX_ERROR;
|
50
|
656 }
|
|
657
|
300
|
658 b->last = ngx_cpymem(b->pos, ctx->boundary_header.data,
|
|
659 sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN);
|
272
|
660 *b->last++ = '-'; *b->last++ = '-';
|
|
661 *b->last++ = CR; *b->last++ = LF;
|
|
662
|
|
663 hcl = ngx_alloc_chain_link(r->pool);
|
|
664 if (hcl == NULL) {
|
|
665 return NGX_ERROR;
|
|
666 }
|
50
|
667
|
272
|
668 hcl->buf = b;
|
|
669 hcl->next = NULL;
|
|
670
|
|
671 *ll = hcl;
|
|
672
|
|
673 return ngx_http_next_body_filter(r, out);
|
|
674
|
|
675 overlapped:
|
|
676
|
|
677 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
678 "range in overlapped buffers");
|
|
679
|
|
680 return NGX_ERROR;
|
50
|
681 }
|
|
682
|
|
683
|
|
684 static ngx_int_t
|
230
|
685 ngx_http_range_header_filter_init(ngx_conf_t *cf)
|
50
|
686 {
|
|
687 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
688 ngx_http_top_header_filter = ngx_http_range_header_filter;
|
|
689
|
|
690 return NGX_OK;
|
|
691 }
|
|
692
|
|
693
|
|
694 static ngx_int_t
|
230
|
695 ngx_http_range_body_filter_init(ngx_conf_t *cf)
|
50
|
696 {
|
|
697 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
698 ngx_http_top_body_filter = ngx_http_range_body_filter;
|
|
699
|
|
700 return NGX_OK;
|
|
701 }
|