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comparison src/http/modules/ngx_http_range_filter_module.c @ 4745:4752060ca462

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Entity tags: support in If-Range header.
author Maxim Dounin <mdounin@mdounin.ru>
date Sat, 07 Jul 2012 21:21:15 +0000
parents 5ea8c710c532
children 149634c98d67
comparison
equal deleted inserted replaced
4744:5b93a9ac60ed 4745:4752060ca462
144 144
145 145
146 static ngx_int_t 146 static ngx_int_t
147 ngx_http_range_header_filter(ngx_http_request_t *r) 147 ngx_http_range_header_filter(ngx_http_request_t *r)
148 { 148 {
149 time_t if_range; 149 time_t if_range_time;
150 ngx_str_t *if_range, *etag;
150 ngx_http_core_loc_conf_t *clcf; 151 ngx_http_core_loc_conf_t *clcf;
151 ngx_http_range_filter_ctx_t *ctx; 152 ngx_http_range_filter_ctx_t *ctx;
152 153
153 if (r->http_version < NGX_HTTP_VERSION_10 154 if (r->http_version < NGX_HTTP_VERSION_10
154 || r->headers_out.status != NGX_HTTP_OK 155 || r->headers_out.status != NGX_HTTP_OK
174 goto next_filter; 175 goto next_filter;
175 } 176 }
176 177
177 if (r->headers_in.if_range) { 178 if (r->headers_in.if_range) {
178 179
180 if_range = &r->headers_in.if_range->value;
181
182 if (if_range->len > 2 && if_range->data[if_range->len - 1] == '"') {
183
184 if (r->headers_out.etag == NULL) {
185 goto next_filter;
186 }
187
188 etag = &r->headers_out.etag->value;
189
190 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
191 "http ir:%V etag:%V", if_range, etag);
192
193 if (if_range->len != etag->len
194 || ngx_strncmp(if_range->data, etag->data, etag->len) != 0)
195 {
196 goto next_filter;
197 }
198
199 goto parse;
200 }
201
179 if (r->headers_out.last_modified_time == (time_t) -1) { 202 if (r->headers_out.last_modified_time == (time_t) -1) {
180 goto next_filter; 203 goto next_filter;
181 } 204 }
182 205
183 if_range = ngx_http_parse_time(r->headers_in.if_range->value.data, 206 if_range_time = ngx_http_parse_time(if_range->data, if_range->len);
184 r->headers_in.if_range->value.len);
185 207
186 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, 208 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
187 "http ir:%d lm:%d", 209 "http ir:%d lm:%d",
188 if_range, r->headers_out.last_modified_time); 210 if_range_time, r->headers_out.last_modified_time);
189 211
190 if (if_range != r->headers_out.last_modified_time) { 212 if (if_range_time != r->headers_out.last_modified_time) {
191 goto next_filter; 213 goto next_filter;
192 } 214 }
193 } 215 }
216
217 parse:
194 218
195 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_range_filter_ctx_t)); 219 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_range_filter_ctx_t));
196 if (ctx == NULL) { 220 if (ctx == NULL) {
197 return NGX_ERROR; 221 return NGX_ERROR;
198 } 222 }