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comparison src/http/modules/ngx_http_gzip_filter.c @ 315:39b6f2df45c0

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nginx-0.0.3-2004-04-14-21:44:28 import
author Igor Sysoev <igor@sysoev.ru>
date Wed, 14 Apr 2004 17:44:28 +0000
parents d71c87d11b16
children 7a8ebba985a9
comparison
equal deleted inserted replaced
314:d71c87d11b16 315:39b6f2df45c0
94 }; 94 };
95 95
96 96
97 static ngx_conf_enum_t ngx_http_gzip_proxied[] = { 97 static ngx_conf_enum_t ngx_http_gzip_proxied[] = {
98 { ngx_string("off"), NGX_HTTP_GZIP_PROXIED_OFF }, 98 { ngx_string("off"), NGX_HTTP_GZIP_PROXIED_OFF },
99 #if 0
100 { ngx_string("nocachable"), NGX_HTTP_GZIP_PROXIED_NOCACHABLE }, 99 { ngx_string("nocachable"), NGX_HTTP_GZIP_PROXIED_NOCACHABLE },
101 { ngx_string("poor_cachable"), NGX_HTTP_GZIP_PROXIED_POOR_CACHABLE }, 100 { ngx_string("poor_cachable"), NGX_HTTP_GZIP_PROXIED_POOR_CACHABLE },
102 #endif
103 { ngx_string("on"), NGX_HTTP_GZIP_PROXIED_ON }, 101 { ngx_string("on"), NGX_HTTP_GZIP_PROXIED_ON },
104 { ngx_null_string, 0 } 102 { ngx_null_string, 0 }
105 }; 103 };
106 104
107 105
221 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; 219 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
222 220
223 221
224 static int ngx_http_gzip_header_filter(ngx_http_request_t *r) 222 static int ngx_http_gzip_header_filter(ngx_http_request_t *r)
225 { 223 {
224 time_t date, expires;
226 ngx_http_gzip_ctx_t *ctx; 225 ngx_http_gzip_ctx_t *ctx;
227 ngx_http_gzip_conf_t *conf; 226 ngx_http_gzip_conf_t *conf;
228 227
229 conf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_filter_module); 228 conf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_filter_module);
230 229
248 { 247 {
249 return ngx_http_next_header_filter(r); 248 return ngx_http_next_header_filter(r);
250 } 249 }
251 250
252 251
253 /* TODO: proxied */ 252 if (r->headers_in.via && conf->proxied != NGX_HTTP_GZIP_PROXIED_ON) {
254 if (r->headers_in.via && conf->proxied == NGX_HTTP_GZIP_PROXIED_OFF) { 253
255 return ngx_http_next_header_filter(r); 254 if (conf->proxied == NGX_HTTP_GZIP_PROXIED_OFF) {
255 return ngx_http_next_header_filter(r);
256 }
257
258 if (r->headers_out.expires) {
259 expires = ngx_http_parse_time(r->headers_out.expires->value.data,
260 r->headers_out.expires->value.len);
261 if (expires == NGX_ERROR) {
262 return ngx_http_next_header_filter(r);
263 }
264
265 if (r->headers_out.date) {
266 date = ngx_http_parse_time(r->headers_out.date->value.data,
267 r->headers_out.date->value.len);
268 if (date == NGX_ERROR) {
269 return ngx_http_next_header_filter(r);
270 }
271
272 } else {
273 date = ngx_cached_time;
274 }
275
276 if (expires >= date) {
277 return ngx_http_next_header_filter(r);
278 }
279
280 } else if (r->headers_out.cache_control) {
281
282 if (conf->proxied == NGX_HTTP_GZIP_PROXIED_NOCACHABLE) {
283 if (ngx_strstr(r->headers_out.cache_control->value.data,
284 "no-cache") == NULL)
285 {
286 return ngx_http_next_header_filter(r);
287 }
288
289 } else { /* NGX_HTTP_GZIP_PROXIED_POOR_CACHABLE */
290
291 /* STUB: should be one cycle for all values */
292
293 if (ngx_strstr(r->headers_out.cache_control->value.data,
294 "no-cache") == NULL
295 && ngx_strstr(r->headers_out.cache_control->value.data,
296 "private") == NULL
297 && ngx_strstr(r->headers_out.cache_control->value.data,
298 "no-store") == NULL)
299 {
300 return ngx_http_next_header_filter(r);
301 }
302 }
303
304 } else if (conf->proxied == NGX_HTTP_GZIP_PROXIED_NOCACHABLE) {
305 return ngx_http_next_header_filter(r);
306
307 } else { /* NGX_HTTP_GZIP_PROXIED_POOR_CACHABLE */
308
309 if (r->headers_out.last_modified || r->headers_out.etag) {
310 return ngx_http_next_header_filter(r);
311 }
312 }
256 } 313 }
257 314
258 315
259 /* 316 /*
260 * if the URL (without the "http://" prefix) is longer than 253 bytes 317 * if the URL (without the "http://" prefix) is longer than 253 bytes
531 588
532 #if (HAVE_LITTLE_ENDIAN) 589 #if (HAVE_LITTLE_ENDIAN)
533 trailer->crc32 = ctx->crc32; 590 trailer->crc32 = ctx->crc32;
534 trailer->zlen = ctx->zin; 591 trailer->zlen = ctx->zin;
535 #else 592 #else
536 /* STUB */ 593 /* STUB */ Oops !
537 #endif 594 #endif
538 595
539 ctx->zstream.avail_in = 0; 596 ctx->zstream.avail_in = 0;
540 ctx->zstream.avail_out = 0; 597 ctx->zstream.avail_out = 0;
541 598