Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_range_filter_module.c @ 2522:93d83e6c198c
fix message
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 23 Feb 2009 09:42:35 +0000 |
parents | 7155dbb2317e |
children | a6d6d762c554 |
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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5 |
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6 |
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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_http.h> |
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10 |
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11 |
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12 /* |
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13 * the single part format: |
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14 * |
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15 * "HTTP/1.0 206 Partial Content" CRLF |
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16 * ... header ... |
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17 * "Content-Type: image/jpeg" CRLF |
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18 * "Content-Length: SIZE" CRLF |
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19 * "Content-Range: bytes START-END/SIZE" CRLF |
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20 * CRLF |
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21 * ... data ... |
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22 * |
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23 * |
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24 * the mutlipart format: |
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25 * |
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26 * "HTTP/1.0 206 Partial Content" CRLF |
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27 * ... header ... |
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28 * "Content-Type: multipart/byteranges; boundary=0123456789" CRLF |
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29 * CRLF |
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30 * CRLF |
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31 * "--0123456789" CRLF |
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32 * "Content-Type: image/jpeg" CRLF |
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33 * "Content-Range: bytes START0-END0/SIZE" CRLF |
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34 * CRLF |
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35 * ... data ... |
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36 * CRLF |
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37 * "--0123456789" CRLF |
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38 * "Content-Type: image/jpeg" CRLF |
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39 * "Content-Range: bytes START1-END1/SIZE" CRLF |
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40 * CRLF |
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41 * ... data ... |
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42 * CRLF |
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43 * "--0123456789--" CRLF |
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44 */ |
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45 |
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46 |
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47 typedef struct { |
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48 off_t start; |
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49 off_t end; |
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50 ngx_str_t content_range; |
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51 } ngx_http_range_t; |
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52 |
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53 |
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54 typedef struct { |
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55 off_t offset; |
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56 ngx_str_t boundary_header; |
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57 ngx_array_t ranges; |
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58 } ngx_http_range_filter_ctx_t; |
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59 |
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60 |
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61 ngx_int_t ngx_http_range_parse(ngx_http_request_t *r, |
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62 ngx_http_range_filter_ctx_t *ctx); |
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63 static ngx_int_t ngx_http_range_singlepart_header(ngx_http_request_t *r, |
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64 ngx_http_range_filter_ctx_t *ctx); |
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65 static ngx_int_t ngx_http_range_multipart_header(ngx_http_request_t *r, |
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66 ngx_http_range_filter_ctx_t *ctx); |
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67 static ngx_int_t ngx_http_range_not_satisfiable(ngx_http_request_t *r); |
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68 static ngx_int_t ngx_http_range_test_overlapped(ngx_http_request_t *r, |
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69 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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70 static ngx_int_t ngx_http_range_singlepart_body(ngx_http_request_t *r, |
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71 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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72 static ngx_int_t ngx_http_range_multipart_body(ngx_http_request_t *r, |
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73 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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74 |
681 | 75 static ngx_int_t ngx_http_range_header_filter_init(ngx_conf_t *cf); |
76 static ngx_int_t ngx_http_range_body_filter_init(ngx_conf_t *cf); | |
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77 |
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78 |
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79 static ngx_http_module_t ngx_http_range_header_filter_module_ctx = { |
509 | 80 NULL, /* preconfiguration */ |
681 | 81 ngx_http_range_header_filter_init, /* postconfiguration */ |
177
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82 |
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83 NULL, /* create main configuration */ |
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84 NULL, /* init main configuration */ |
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85 |
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86 NULL, /* create server configuration */ |
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87 NULL, /* merge server configuration */ |
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88 |
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89 NULL, /* create location configuration */ |
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90 NULL, /* merge location configuration */ |
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91 }; |
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92 |
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93 |
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94 ngx_module_t ngx_http_range_header_filter_module = { |
509 | 95 NGX_MODULE_V1, |
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96 &ngx_http_range_header_filter_module_ctx, /* module context */ |
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97 NULL, /* module directives */ |
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98 NGX_HTTP_MODULE, /* module type */ |
541 | 99 NULL, /* init master */ |
681 | 100 NULL, /* init module */ |
541 | 101 NULL, /* init process */ |
102 NULL, /* init thread */ | |
103 NULL, /* exit thread */ | |
104 NULL, /* exit process */ | |
105 NULL, /* exit master */ | |
106 NGX_MODULE_V1_PADDING | |
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107 }; |
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108 |
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109 |
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110 static ngx_http_module_t ngx_http_range_body_filter_module_ctx = { |
509 | 111 NULL, /* preconfiguration */ |
681 | 112 ngx_http_range_body_filter_init, /* postconfiguration */ |
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113 |
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114 NULL, /* create main configuration */ |
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115 NULL, /* init main configuration */ |
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116 |
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117 NULL, /* create server configuration */ |
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118 NULL, /* merge server configuration */ |
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119 |
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120 NULL, /* create location configuration */ |
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121 NULL, /* merge location configuration */ |
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122 }; |
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123 |
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124 |
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125 ngx_module_t ngx_http_range_body_filter_module = { |
509 | 126 NGX_MODULE_V1, |
334
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127 &ngx_http_range_body_filter_module_ctx, /* module context */ |
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128 NULL, /* module directives */ |
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129 NGX_HTTP_MODULE, /* module type */ |
541 | 130 NULL, /* init master */ |
681 | 131 NULL, /* init module */ |
541 | 132 NULL, /* init process */ |
133 NULL, /* init thread */ | |
134 NULL, /* exit thread */ | |
135 NULL, /* exit process */ | |
136 NULL, /* exit master */ | |
137 NGX_MODULE_V1_PADDING | |
99
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138 }; |
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139 |
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140 |
155
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153
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141 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
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142 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; |
99
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143 |
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144 |
493 | 145 static ngx_int_t |
146 ngx_http_range_header_filter(ngx_http_request_t *r) | |
99
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147 { |
1630 | 148 time_t if_range; |
461 | 149 ngx_int_t rc; |
99
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150 ngx_http_range_filter_ctx_t *ctx; |
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151 |
160
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155
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152 if (r->http_version < NGX_HTTP_VERSION_10 |
99
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153 || r->headers_out.status != NGX_HTTP_OK |
597 | 154 || r != r->main |
153
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155 || r->headers_out.content_length_n == -1 |
581 | 156 || !r->allow_ranges) |
117
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113
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157 { |
155
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158 return ngx_http_next_header_filter(r); |
117
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159 } |
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160 |
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161 if (r->headers_in.range == NULL |
99
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162 || r->headers_in.range->value.len < 7 |
1107
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163 || ngx_strncasecmp(r->headers_in.range->value.data, |
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164 (u_char *) "bytes=", 6) |
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165 != 0) |
99
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|
166 { |
1630 | 167 goto next_filter; |
168 } | |
169 | |
170 if (r->headers_in.if_range && r->headers_out.last_modified_time != -1) { | |
171 | |
172 if_range = ngx_http_parse_time(r->headers_in.if_range->value.data, | |
173 r->headers_in.if_range->value.len); | |
117
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|
174 |
1630 | 175 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
176 "http ir:%d lm:%d", | |
177 if_range, r->headers_out.last_modified_time); | |
117
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178 |
1630 | 179 if (if_range != r->headers_out.last_modified_time) { |
180 goto next_filter; | |
181 } | |
99
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182 } |
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183 |
963
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184 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_range_filter_ctx_t)); |
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185 if (ctx == NULL) { |
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186 return NGX_ERROR; |
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187 } |
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188 |
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189 if (ngx_array_init(&ctx->ranges, r->pool, 1, sizeof(ngx_http_range_t)) |
959 | 190 == NGX_ERROR) |
461 | 191 { |
192 return NGX_ERROR; | |
193 } | |
99
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194 |
2118
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195 rc = ngx_http_range_parse(r, ctx); |
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196 |
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197 if (rc == NGX_OK) { |
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198 |
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199 ngx_http_set_ctx(r, ctx, ngx_http_range_body_filter_module); |
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200 |
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201 r->headers_out.status = NGX_HTTP_PARTIAL_CONTENT; |
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202 |
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203 if (ctx->ranges.nelts == 1) { |
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204 return ngx_http_range_singlepart_header(r, ctx); |
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205 } |
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|
206 |
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207 return ngx_http_range_multipart_header(r, ctx); |
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208 } |
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209 |
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210 if (rc == NGX_HTTP_RANGE_NOT_SATISFIABLE) { |
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211 return ngx_http_range_not_satisfiable(r); |
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212 } |
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213 |
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214 /* rc == NGX_ERROR */ |
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215 |
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216 return rc; |
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217 |
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218 next_filter: |
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219 |
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220 r->headers_out.accept_ranges = ngx_list_push(&r->headers_out.headers); |
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221 if (r->headers_out.accept_ranges == NULL) { |
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222 return NGX_ERROR; |
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223 } |
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|
224 |
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225 r->headers_out.accept_ranges->hash = 1; |
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226 r->headers_out.accept_ranges->key.len = sizeof("Accept-Ranges") - 1; |
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227 r->headers_out.accept_ranges->key.data = (u_char *) "Accept-Ranges"; |
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228 r->headers_out.accept_ranges->value.len = sizeof("bytes") - 1; |
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229 r->headers_out.accept_ranges->value.data = (u_char *) "bytes"; |
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230 |
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231 return ngx_http_next_header_filter(r); |
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232 } |
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233 |
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234 |
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235 ngx_int_t |
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236 ngx_http_range_parse(ngx_http_request_t *r, ngx_http_range_filter_ctx_t *ctx) |
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237 { |
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238 u_char *p; |
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239 off_t start, end; |
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240 ngx_uint_t suffix; |
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241 ngx_http_range_t *range; |
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242 |
99
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|
243 p = r->headers_in.range->value.data + 6; |
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|
244 |
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|
245 for ( ;; ) { |
231
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195
diff
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|
246 start = 0; |
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195
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247 end = 0; |
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|
248 suffix = 0; |
99
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|
249 |
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|
250 while (*p == ' ') { p++; } |
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|
251 |
231
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252 if (*p != '-') { |
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253 if (*p < '0' || *p > '9') { |
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254 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
231
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parents:
195
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255 } |
99
a059e1aa65d4
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parents:
diff
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|
256 |
231
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195
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257 while (*p >= '0' && *p <= '9') { |
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258 start = start * 10 + *p++ - '0'; |
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259 } |
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260 |
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261 while (*p == ' ') { p++; } |
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262 |
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263 if (*p++ != '-') { |
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264 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
231
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265 } |
99
a059e1aa65d4
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parents:
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266 |
231
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267 if (start >= r->headers_out.content_length_n) { |
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268 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
231
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269 } |
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270 |
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271 while (*p == ' ') { p++; } |
99
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272 |
231
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273 if (*p == ',' || *p == '\0') { |
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274 range = ngx_array_push(&ctx->ranges); |
501 | 275 if (range == NULL) { |
461 | 276 return NGX_ERROR; |
277 } | |
278 | |
231
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279 range->start = start; |
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280 range->end = r->headers_out.content_length_n; |
99
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281 |
231
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282 if (*p++ != ',') { |
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283 return NGX_OK; |
231
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284 } |
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285 |
99
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286 continue; |
a059e1aa65d4
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287 } |
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288 |
231
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289 } else { |
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290 suffix = 1; |
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291 p++; |
99
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292 } |
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293 |
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294 if (*p < '0' || *p > '9') { |
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295 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
99
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|
296 } |
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parents:
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|
297 |
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298 while (*p >= '0' && *p <= '9') { |
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299 end = end * 10 + *p++ - '0'; |
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300 } |
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parents:
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|
301 |
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parents:
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302 while (*p == ' ') { p++; } |
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parents:
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|
303 |
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304 if (*p != ',' && *p != '\0') { |
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305 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
99
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parents:
diff
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|
306 } |
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parents:
diff
changeset
|
307 |
231
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195
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308 if (suffix) { |
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309 start = r->headers_out.content_length_n - end; |
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310 end = r->headers_out.content_length_n - 1; |
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195
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|
311 } |
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195
diff
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|
312 |
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313 if (start > end) { |
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314 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
99
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
315 } |
a059e1aa65d4
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parents:
diff
changeset
|
316 |
963
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diff
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|
317 range = ngx_array_push(&ctx->ranges); |
501 | 318 if (range == NULL) { |
461 | 319 return NGX_ERROR; |
320 } | |
321 | |
99
a059e1aa65d4
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parents:
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|
322 range->start = start; |
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parents:
diff
changeset
|
323 |
231
92db0aa1e83f
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parents:
195
diff
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|
324 if (end >= r->headers_out.content_length_n) { |
92db0aa1e83f
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195
diff
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|
325 /* |
92db0aa1e83f
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diff
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|
326 * Download Accelerator sends the last byte position |
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327 * that equals to the file length |
92db0aa1e83f
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195
diff
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|
328 */ |
92db0aa1e83f
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195
diff
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|
329 range->end = r->headers_out.content_length_n; |
92db0aa1e83f
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parents:
195
diff
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|
330 |
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195
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|
331 } else { |
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parents:
195
diff
changeset
|
332 range->end = end + 1; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
333 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
334 |
231
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nginx-0.0.1-2004-01-16-21:29:15 import
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parents:
195
diff
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|
335 if (*p++ != ',') { |
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|
336 return NGX_OK; |
231
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nginx-0.0.1-2004-01-16-21:29:15 import
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parents:
195
diff
changeset
|
337 } |
99
a059e1aa65d4
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parents:
diff
changeset
|
338 } |
2118
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|
339 } |
c1f589732d8c
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parents:
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diff
changeset
|
340 |
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diff
changeset
|
341 |
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changeset
|
342 static ngx_int_t |
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343 ngx_http_range_singlepart_header(ngx_http_request_t *r, |
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|
344 ngx_http_range_filter_ctx_t *ctx) |
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|
345 { |
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|
346 ngx_table_elt_t *content_range; |
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|
347 ngx_http_range_t *range; |
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|
348 |
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|
349 content_range = ngx_list_push(&r->headers_out.headers); |
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|
350 if (content_range == NULL) { |
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|
351 return NGX_ERROR; |
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|
352 } |
99
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parents:
diff
changeset
|
353 |
2118
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|
354 r->headers_out.content_range = content_range; |
461 | 355 |
2118
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|
356 content_range->hash = 1; |
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changeset
|
357 content_range->key.len = sizeof("Content-Range") - 1; |
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|
358 content_range->key.data = (u_char *) "Content-Range"; |
99
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parents:
diff
changeset
|
359 |
2118
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changeset
|
360 content_range->value.data = ngx_pnalloc(r->pool, |
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diff
changeset
|
361 sizeof("bytes -/") - 1 + 3 * NGX_OFF_T_LEN); |
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parents:
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diff
changeset
|
362 if (content_range->value.data == NULL) { |
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split ngx_http_range_filter_module
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parents:
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diff
changeset
|
363 return NGX_ERROR; |
461 | 364 } |
365 | |
2118
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|
366 /* "Content-Range: bytes SSSS-EEEE/TTTT" header */ |
461 | 367 |
2118
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changeset
|
368 range = ctx->ranges.elts; |
461 | 369 |
2118
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changeset
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370 content_range->value.len = ngx_sprintf(content_range->value.data, |
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371 "bytes %O-%O/%O", |
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372 range->start, range->end - 1, |
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373 r->headers_out.content_length_n) |
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374 - content_range->value.data; |
461 | 375 |
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376 r->headers_out.content_length_n = range->end - range->start; |
461 | 377 |
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378 if (r->headers_out.content_length) { |
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379 r->headers_out.content_length->hash = 0; |
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380 r->headers_out.content_length = NULL; |
461 | 381 } |
382 | |
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383 return ngx_http_next_header_filter(r); |
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384 } |
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385 |
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386 |
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387 static ngx_int_t |
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388 ngx_http_range_multipart_header(ngx_http_request_t *r, |
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389 ngx_http_range_filter_ctx_t *ctx) |
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390 { |
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391 size_t len; |
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392 ngx_uint_t i; |
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393 ngx_http_range_t *range; |
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394 ngx_atomic_uint_t boundary; |
461 | 395 |
493 | 396 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN |
397 + sizeof(CRLF "Content-Type: ") - 1 | |
509 | 398 + r->headers_out.content_type.len |
461 | 399 + sizeof(CRLF "Content-Range: bytes ") - 1; |
400 | |
401 if (r->headers_out.charset.len) { | |
402 len += sizeof("; charset=") - 1 + r->headers_out.charset.len; | |
403 } | |
404 | |
2049 | 405 ctx->boundary_header.data = ngx_pnalloc(r->pool, len); |
501 | 406 if (ctx->boundary_header.data == NULL) { |
461 | 407 return NGX_ERROR; |
408 } | |
409 | |
493 | 410 boundary = ngx_next_temp_number(0); |
461 | 411 |
412 /* | |
413 * The boundary header of the range: | |
414 * CRLF | |
415 * "--0123456789" CRLF | |
416 * "Content-Type: image/jpeg" CRLF | |
417 * "Content-Range: bytes " | |
418 */ | |
419 | |
420 if (r->headers_out.charset.len) { | |
421 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data, | |
493 | 422 CRLF "--%0muA" CRLF |
461 | 423 "Content-Type: %V; charset=%V" CRLF |
424 "Content-Range: bytes ", | |
425 boundary, | |
509 | 426 &r->headers_out.content_type, |
461 | 427 &r->headers_out.charset) |
428 - ctx->boundary_header.data; | |
429 | |
430 r->headers_out.charset.len = 0; | |
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431 |
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432 } else if (r->headers_out.content_type.len) { |
461 | 433 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data, |
493 | 434 CRLF "--%0muA" CRLF |
461 | 435 "Content-Type: %V" CRLF |
436 "Content-Range: bytes ", | |
437 boundary, | |
509 | 438 &r->headers_out.content_type) |
461 | 439 - ctx->boundary_header.data; |
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440 |
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441 } else { |
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442 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data, |
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443 CRLF "--%0muA" CRLF |
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444 "Content-Range: bytes ", |
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445 boundary) |
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446 - ctx->boundary_header.data; |
461 | 447 } |
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448 |
509 | 449 r->headers_out.content_type.data = |
2049 | 450 ngx_pnalloc(r->pool, |
451 sizeof("Content-Type: multipart/byteranges; boundary=") - 1 | |
452 + NGX_ATOMIC_T_LEN); | |
165
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453 |
509 | 454 if (r->headers_out.content_type.data == NULL) { |
461 | 455 return NGX_ERROR; |
456 } | |
99
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457 |
461 | 458 /* "Content-Type: multipart/byteranges; boundary=0123456789" */ |
99
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459 |
509 | 460 r->headers_out.content_type.len = |
461 ngx_sprintf(r->headers_out.content_type.data, | |
493 | 462 "multipart/byteranges; boundary=%0muA", |
461 | 463 boundary) |
509 | 464 - r->headers_out.content_type.data; |
160
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465 |
493 | 466 |
461 | 467 /* the size of the last boundary CRLF "--0123456789--" CRLF */ |
493 | 468 |
469 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN + sizeof("--" CRLF) - 1; | |
99
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470 |
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471 range = ctx->ranges.elts; |
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472 for (i = 0; i < ctx->ranges.nelts; i++) { |
455 | 473 |
461 | 474 /* the size of the range: "SSSS-EEEE/TTTT" CRLF CRLF */ |
455 | 475 |
461 | 476 range[i].content_range.data = |
2049 | 477 ngx_pnalloc(r->pool, 3 * NGX_OFF_T_LEN + 2 + 4); |
99
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478 |
461 | 479 if (range[i].content_range.data == NULL) { |
480 return NGX_ERROR; | |
481 } | |
99
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482 |
461 | 483 range[i].content_range.len = ngx_sprintf(range[i].content_range.data, |
484 "%O-%O/%O" CRLF CRLF, | |
485 range[i].start, range[i].end - 1, | |
486 r->headers_out.content_length_n) | |
487 - range[i].content_range.data; | |
160
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488 |
461 | 489 len += ctx->boundary_header.len + range[i].content_range.len |
490 + (size_t) (range[i].end - range[i].start); | |
491 } | |
99
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492 |
461 | 493 r->headers_out.content_length_n = len; |
960 | 494 |
495 if (r->headers_out.content_length) { | |
496 r->headers_out.content_length->hash = 0; | |
497 r->headers_out.content_length = NULL; | |
498 } | |
99
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499 |
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500 return ngx_http_next_header_filter(r); |
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501 } |
1630 | 502 |
503 | |
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504 static ngx_int_t |
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505 ngx_http_range_not_satisfiable(ngx_http_request_t *r) |
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506 { |
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507 ngx_table_elt_t *content_range; |
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508 |
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509 r->headers_out.status = NGX_HTTP_RANGE_NOT_SATISFIABLE; |
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510 |
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511 content_range = ngx_list_push(&r->headers_out.headers); |
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512 if (content_range == NULL) { |
1630 | 513 return NGX_ERROR; |
514 } | |
515 | |
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516 r->headers_out.content_range = content_range; |
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517 |
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518 content_range->hash = 1; |
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519 content_range->key.len = sizeof("Content-Range") - 1; |
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520 content_range->key.data = (u_char *) "Content-Range"; |
1630 | 521 |
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522 content_range->value.data = ngx_pnalloc(r->pool, |
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523 sizeof("bytes */") - 1 + NGX_OFF_T_LEN); |
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524 if (content_range->value.data == NULL) { |
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525 return NGX_ERROR; |
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526 } |
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527 |
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528 content_range->value.len = ngx_sprintf(content_range->value.data, |
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529 "bytes */%O", |
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530 r->headers_out.content_length_n) |
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531 - content_range->value.data; |
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532 |
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533 ngx_http_clear_content_length(r); |
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534 |
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535 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
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536 } |
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537 |
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538 |
493 | 539 static ngx_int_t |
540 ngx_http_range_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
99
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541 { |
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542 ngx_http_range_filter_ctx_t *ctx; |
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543 |
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544 if (in == NULL) { |
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545 return ngx_http_next_body_filter(r, in); |
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546 } |
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547 |
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548 ctx = ngx_http_get_module_ctx(r, ngx_http_range_body_filter_module); |
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549 |
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550 if (ctx == NULL) { |
155
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551 return ngx_http_next_body_filter(r, in); |
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552 } |
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553 |
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554 if (ctx->ranges.nelts == 1) { |
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555 return ngx_http_range_singlepart_body(r, ctx, in); |
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556 } |
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557 |
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558 /* |
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|
559 * multipart ranges are supported only if whole body is in a single buffer |
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|
560 */ |
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|
561 |
962
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|
562 if (ngx_buf_special(in->buf)) { |
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563 return ngx_http_next_body_filter(r, in); |
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|
564 } |
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diff
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|
565 |
2118
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diff
changeset
|
566 if (ngx_http_range_test_overlapped(r, ctx, in) != NGX_OK) { |
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|
567 return NGX_ERROR; |
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|
568 } |
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diff
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|
569 |
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|
570 return ngx_http_range_multipart_body(r, ctx, in); |
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|
571 } |
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changeset
|
572 |
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changeset
|
573 |
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changeset
|
574 static ngx_int_t |
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|
575 ngx_http_range_test_overlapped(ngx_http_request_t *r, |
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576 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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|
577 { |
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|
578 off_t start, last; |
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|
579 ngx_buf_t *buf; |
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diff
changeset
|
580 ngx_uint_t i; |
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diff
changeset
|
581 ngx_http_range_t *range; |
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|
582 |
962
69754fb59ba1
support ranges for single memory buffer
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diff
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|
583 if (ctx->offset) { |
69754fb59ba1
support ranges for single memory buffer
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diff
changeset
|
584 goto overlapped; |
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support ranges for single memory buffer
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diff
changeset
|
585 } |
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support ranges for single memory buffer
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changeset
|
586 |
2118
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|
587 buf = in->buf; |
960 | 588 |
589 if (!buf->last_buf) { | |
962
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diff
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|
590 |
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diff
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|
591 if (buf->in_file) { |
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|
592 start = buf->file_pos + ctx->offset; |
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|
593 last = buf->file_last + ctx->offset; |
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|
594 |
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support ranges for single memory buffer
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diff
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|
595 } else { |
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diff
changeset
|
596 start = buf->pos - buf->start + ctx->offset; |
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|
597 last = buf->last - buf->start + ctx->offset; |
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|
598 } |
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support ranges for single memory buffer
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diff
changeset
|
599 |
2118
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diff
changeset
|
600 range = ctx->ranges.elts; |
963
78e70dae89f0
move ranges array to ngx_http_range_filter_ctx_t
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parents:
962
diff
changeset
|
601 for (i = 0; i < ctx->ranges.nelts; i++) { |
962
69754fb59ba1
support ranges for single memory buffer
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parents:
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diff
changeset
|
602 if (start > range[i].start || last < range[i].end) { |
960 | 603 goto overlapped; |
604 } | |
605 } | |
606 } | |
607 | |
962
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961
diff
changeset
|
608 ctx->offset = ngx_buf_size(buf); |
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changeset
|
609 |
2118
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diff
changeset
|
610 return NGX_OK; |
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changeset
|
611 |
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diff
changeset
|
612 overlapped: |
960 | 613 |
2118
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changeset
|
614 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
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changeset
|
615 "range in overlapped buffers"); |
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|
616 |
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diff
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|
617 return NGX_ERROR; |
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|
618 } |
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|
619 |
962
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diff
changeset
|
620 |
2118
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changeset
|
621 static ngx_int_t |
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changeset
|
622 ngx_http_range_singlepart_body(ngx_http_request_t *r, |
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changeset
|
623 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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|
624 { |
2121
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changeset
|
625 off_t start, last; |
2118
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changeset
|
626 ngx_buf_t *buf; |
2121
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2119
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changeset
|
627 ngx_chain_t *out, *cl, **ll; |
2118
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diff
changeset
|
628 ngx_http_range_t *range; |
960 | 629 |
2121
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changeset
|
630 out = NULL; |
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|
631 ll = &out; |
2118
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changeset
|
632 range = ctx->ranges.elts; |
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changeset
|
633 |
2121
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support several buf's for single-part range
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diff
changeset
|
634 for (cl = in; cl; cl = cl->next) { |
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diff
changeset
|
635 |
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diff
changeset
|
636 buf = cl->buf; |
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support several buf's for single-part range
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diff
changeset
|
637 |
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support several buf's for single-part range
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diff
changeset
|
638 start = ctx->offset; |
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diff
changeset
|
639 last = ctx->offset + ngx_buf_size(buf); |
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diff
changeset
|
640 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
641 ctx->offset = last; |
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support several buf's for single-part range
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diff
changeset
|
642 |
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support several buf's for single-part range
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diff
changeset
|
643 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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support several buf's for single-part range
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diff
changeset
|
644 "http range body buf: %O-%O", start, last); |
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support several buf's for single-part range
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diff
changeset
|
645 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
646 if (ngx_buf_special(buf)) { |
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support several buf's for single-part range
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diff
changeset
|
647 *ll = cl; |
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support several buf's for single-part range
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diff
changeset
|
648 ll = &cl->next; |
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support several buf's for single-part range
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diff
changeset
|
649 continue; |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
650 } |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
651 |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
652 if (range->end <= start || range->start >= last) { |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
653 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
654 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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diff
changeset
|
655 "http range body skip"); |
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support several buf's for single-part range
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diff
changeset
|
656 |
2269 | 657 if (buf->in_file) { |
658 buf->file_pos = buf->file_last; | |
659 } | |
660 | |
2121
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support several buf's for single-part range
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diff
changeset
|
661 buf->pos = buf->last; |
2269 | 662 buf->sync = 1; |
663 | |
2121
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|
664 continue; |
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support several buf's for single-part range
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diff
changeset
|
665 } |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
666 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
667 if (range->start > start) { |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
668 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
669 if (buf->in_file) { |
b39c0040b3e4
support several buf's for single-part range
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changeset
|
670 buf->file_pos += range->start - start; |
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support several buf's for single-part range
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diff
changeset
|
671 } |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
672 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
673 if (ngx_buf_in_memory(buf)) { |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
674 buf->pos += (size_t) (range->start - start); |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
675 } |
b39c0040b3e4
support several buf's for single-part range
Igor Sysoev <igor@sysoev.ru>
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2119
diff
changeset
|
676 } |
b39c0040b3e4
support several buf's for single-part range
Igor Sysoev <igor@sysoev.ru>
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2119
diff
changeset
|
677 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
678 if (range->end <= last) { |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
679 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
680 if (buf->in_file) { |
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support several buf's for single-part range
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changeset
|
681 buf->file_last -= last - range->end; |
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diff
changeset
|
682 } |
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support several buf's for single-part range
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2119
diff
changeset
|
683 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
684 if (ngx_buf_in_memory(buf)) { |
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support several buf's for single-part range
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diff
changeset
|
685 buf->last -= (size_t) (last - range->end); |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
686 } |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
687 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
688 buf->last_buf = 1; |
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support several buf's for single-part range
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diff
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|
689 *ll = cl; |
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support several buf's for single-part range
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2119
diff
changeset
|
690 cl->next = NULL; |
b39c0040b3e4
support several buf's for single-part range
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parents:
2119
diff
changeset
|
691 |
b39c0040b3e4
support several buf's for single-part range
Igor Sysoev <igor@sysoev.ru>
parents:
2119
diff
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|
692 break; |
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693 } |
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694 |
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695 *ll = cl; |
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696 ll = &cl->next; |
960 | 697 } |
698 | |
2121
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699 if (out == NULL) { |
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700 return NGX_OK; |
2118
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701 } |
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702 |
2121
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703 return ngx_http_next_body_filter(r, out); |
2118
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704 } |
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705 |
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706 |
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707 static ngx_int_t |
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708 ngx_http_range_multipart_body(ngx_http_request_t *r, |
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709 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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710 { |
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711 ngx_buf_t *b, *buf; |
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712 ngx_uint_t i; |
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713 ngx_chain_t *out, *hcl, *rcl, *dcl, **ll; |
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714 ngx_http_range_t *range; |
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715 |
960 | 716 ll = &out; |
2118
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717 buf = in->buf; |
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718 range = ctx->ranges.elts; |
160
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719 |
963
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720 for (i = 0; i < ctx->ranges.nelts; i++) { |
99
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721 |
960 | 722 /* |
723 * The boundary header of the range: | |
724 * CRLF | |
725 * "--0123456789" CRLF | |
726 * "Content-Type: image/jpeg" CRLF | |
727 * "Content-Range: bytes " | |
728 */ | |
729 | |
730 b = ngx_calloc_buf(r->pool); | |
731 if (b == NULL) { | |
732 return NGX_ERROR; | |
99
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733 } |
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734 |
960 | 735 b->memory = 1; |
736 b->pos = ctx->boundary_header.data; | |
737 b->last = ctx->boundary_header.data + ctx->boundary_header.len; | |
160
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738 |
960 | 739 hcl = ngx_alloc_chain_link(r->pool); |
740 if (hcl == NULL) { | |
741 return NGX_ERROR; | |
742 } | |
461 | 743 |
960 | 744 hcl->buf = b; |
99
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745 |
461 | 746 |
960 | 747 /* "SSSS-EEEE/TTTT" CRLF CRLF */ |
160
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748 |
501 | 749 b = ngx_calloc_buf(r->pool); |
750 if (b == NULL) { | |
461 | 751 return NGX_ERROR; |
752 } | |
753 | |
343
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754 b->temporary = 1; |
960 | 755 b->pos = range[i].content_range.data; |
756 b->last = range[i].content_range.data + range[i].content_range.len; | |
757 | |
758 rcl = ngx_alloc_chain_link(r->pool); | |
759 if (rcl == NULL) { | |
760 return NGX_ERROR; | |
761 } | |
762 | |
763 rcl->buf = b; | |
764 | |
765 | |
766 /* the range data */ | |
461 | 767 |
960 | 768 b = ngx_calloc_buf(r->pool); |
769 if (b == NULL) { | |
770 return NGX_ERROR; | |
771 } | |
772 | |
962
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773 b->in_file = buf->in_file; |
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774 b->temporary = buf->temporary; |
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775 b->memory = buf->memory; |
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776 b->mmap = buf->mmap; |
960 | 777 b->file = buf->file; |
778 | |
962
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779 if (buf->in_file) { |
1093 | 780 b->file_pos = range[i].start; |
781 b->file_last = range[i].end; | |
962
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782 } |
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|
783 |
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|
784 if (ngx_buf_in_memory(buf)) { |
1093 | 785 b->pos = buf->start + (size_t) range[i].start; |
786 b->last = buf->start + (size_t) range[i].end; | |
962
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|
787 } |
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788 |
960 | 789 dcl = ngx_alloc_chain_link(r->pool); |
790 if (dcl == NULL) { | |
461 | 791 return NGX_ERROR; |
792 } | |
793 | |
960 | 794 dcl->buf = b; |
461 | 795 |
155
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796 *ll = hcl; |
960 | 797 hcl->next = rcl; |
798 rcl->next = dcl; | |
799 ll = &dcl->next; | |
800 } | |
99
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|
801 |
960 | 802 /* the last boundary CRLF "--0123456789--" CRLF */ |
803 | |
804 b = ngx_calloc_buf(r->pool); | |
805 if (b == NULL) { | |
806 return NGX_ERROR; | |
807 } | |
808 | |
809 b->temporary = 1; | |
810 b->last_buf = 1; | |
811 | |
2049 | 812 b->pos = ngx_pnalloc(r->pool, sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN |
813 + sizeof("--" CRLF) - 1); | |
960 | 814 if (b->pos == NULL) { |
815 return NGX_ERROR; | |
99
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816 } |
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|
817 |
1195
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|
818 b->last = ngx_cpymem(b->pos, ctx->boundary_header.data, |
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|
819 sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN); |
960 | 820 *b->last++ = '-'; *b->last++ = '-'; |
821 *b->last++ = CR; *b->last++ = LF; | |
822 | |
823 hcl = ngx_alloc_chain_link(r->pool); | |
824 if (hcl == NULL) { | |
825 return NGX_ERROR; | |
826 } | |
827 | |
828 hcl->buf = b; | |
829 hcl->next = NULL; | |
99
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|
830 |
960 | 831 *ll = hcl; |
832 | |
833 return ngx_http_next_body_filter(r, out); | |
99
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|
834 } |
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|
835 |
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|
836 |
493 | 837 static ngx_int_t |
681 | 838 ngx_http_range_header_filter_init(ngx_conf_t *cf) |
99
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|
839 { |
155
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|
840 ngx_http_next_header_filter = ngx_http_top_header_filter; |
99
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|
841 ngx_http_top_header_filter = ngx_http_range_header_filter; |
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|
842 |
334
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|
843 return NGX_OK; |
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|
844 } |
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|
845 |
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|
846 |
493 | 847 static ngx_int_t |
681 | 848 ngx_http_range_body_filter_init(ngx_conf_t *cf) |
334
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|
849 { |
155
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|
850 ngx_http_next_body_filter = ngx_http_top_body_filter; |
99
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|
851 ngx_http_top_body_filter = ngx_http_range_body_filter; |
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|
852 |
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|
853 return NGX_OK; |
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diff
changeset
|
854 } |