Mercurial > hg > nginx
annotate src/http/modules/ngx_http_index_module.c @ 2049:2a92804f4109
*) back out r2040
*) refactor ngx_palloc()
*) introduce ngx_pnalloc()
*) additional pool blocks have smaller header
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 17 Jun 2008 15:00:30 +0000 |
| parents | 0b5b94805d26 |
| children | 67a29af877ed |
| rev | line source |
|---|---|
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441
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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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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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12 typedef struct { |
| 509 | 13 ngx_str_t name; |
| 14 ngx_array_t *lengths; | |
| 15 ngx_array_t *values; | |
| 16 } ngx_http_index_t; | |
| 17 | |
| 18 | |
| 19 typedef struct { | |
| 20 ngx_array_t *indices; /* array of ngx_http_index_t */ | |
| 469 | 21 size_t max_index_len; |
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22 } ngx_http_index_loc_conf_t; |
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23 |
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25 #define NGX_HTTP_DEFAULT_INDEX "index.html" |
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27 |
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28 static ngx_int_t ngx_http_index_test_dir(ngx_http_request_t *r, |
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29 ngx_http_core_loc_conf_t *clcf, u_char *path, u_char *last); |
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30 static ngx_int_t ngx_http_index_error(ngx_http_request_t *r, u_char *file, |
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31 ngx_err_t err); |
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32 |
| 681 | 33 static ngx_int_t ngx_http_index_init(ngx_conf_t *cf); |
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34 static void *ngx_http_index_create_loc_conf(ngx_conf_t *cf); |
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35 static char *ngx_http_index_merge_loc_conf(ngx_conf_t *cf, |
| 509 | 36 void *parent, void *child); |
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37 static char *ngx_http_index_set_index(ngx_conf_t *cf, ngx_command_t *cmd, |
| 509 | 38 void *conf); |
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39 |
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40 |
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41 static ngx_command_t ngx_http_index_commands[] = { |
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42 |
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43 { ngx_string("index"), |
| 509 | 44 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
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45 ngx_http_index_set_index, |
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46 NGX_HTTP_LOC_CONF_OFFSET, |
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47 0, |
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48 NULL }, |
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49 |
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50 ngx_null_command |
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51 }; |
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52 |
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53 |
| 667 | 54 static ngx_http_module_t ngx_http_index_module_ctx = { |
| 509 | 55 NULL, /* preconfiguration */ |
| 681 | 56 ngx_http_index_init, /* postconfiguration */ |
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57 |
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58 NULL, /* create main configuration */ |
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59 NULL, /* init main configuration */ |
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69
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60 |
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61 NULL, /* create server configuration */ |
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62 NULL, /* merge server configuration */ |
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63 |
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64 ngx_http_index_create_loc_conf, /* create location configration */ |
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65 ngx_http_index_merge_loc_conf /* merge location configration */ |
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66 }; |
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67 |
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68 |
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69 ngx_module_t ngx_http_index_module = { |
| 509 | 70 NGX_MODULE_V1, |
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71 &ngx_http_index_module_ctx, /* module context */ |
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72 ngx_http_index_commands, /* module directives */ |
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73 NGX_HTTP_MODULE, /* module type */ |
| 541 | 74 NULL, /* init master */ |
| 681 | 75 NULL, /* init module */ |
| 541 | 76 NULL, /* init process */ |
| 77 NULL, /* init thread */ | |
| 78 NULL, /* exit thread */ | |
| 79 NULL, /* exit process */ | |
| 80 NULL, /* exit master */ | |
| 81 NGX_MODULE_V1_PADDING | |
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82 }; |
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83 |
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84 |
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85 /* |
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86 * Try to open the first index file before the test of the directory existence |
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87 * because the valid requests should be many more than invalid ones. |
| 501 | 88 * If open() would fail, then stat() should be more quickly because some data |
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89 * is already cached in the kernel. |
| 501 | 90 * Besides, Win32 has ERROR_PATH_NOT_FOUND (NGX_ENOTDIR). |
| 91 * Unix has ENOTDIR error, although it less helpfull - it points only | |
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92 * that path contains the usual file in place of the directory. |
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93 */ |
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94 |
| 509 | 95 static ngx_int_t |
| 96 ngx_http_index_handler(ngx_http_request_t *r) | |
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97 { |
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98 u_char *p, *name; |
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99 size_t len, nlen, root, allocated; |
| 509 | 100 ngx_int_t rc; |
| 1454 | 101 ngx_str_t path, uri; |
| 509 | 102 ngx_log_t *log; |
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103 ngx_uint_t i, dir_tested; |
| 509 | 104 ngx_http_index_t *index; |
| 1454 | 105 ngx_open_file_info_t of; |
| 509 | 106 ngx_http_script_code_pt code; |
| 107 ngx_http_script_engine_t e; | |
| 108 ngx_http_core_loc_conf_t *clcf; | |
| 109 ngx_http_index_loc_conf_t *ilcf; | |
| 110 ngx_http_script_len_code_pt lcode; | |
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111 |
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112 if (r->uri.data[r->uri.len - 1] != '/') { |
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113 return NGX_DECLINED; |
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114 } |
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115 |
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116 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) { |
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117 return NGX_DECLINED; |
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118 } |
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119 |
| 489 | 120 /* TODO: Win32 */ |
| 121 if (r->zero_in_uri) { | |
| 122 return NGX_DECLINED; | |
| 123 } | |
| 124 | |
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125 log = r->connection->log; |
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126 |
| 1454 | 127 ilcf = ngx_http_get_module_loc_conf(r, ngx_http_index_module); |
| 128 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
| 129 | |
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130 allocated = 0; |
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131 root = 0; |
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132 dir_tested = 0; |
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133 name = NULL; |
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134 path.data = NULL; |
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135 |
| 509 | 136 index = ilcf->indices->elts; |
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137 for (i = 0; i < ilcf->indices->nelts; i++) { |
| 509 | 138 |
| 139 if (index[i].lengths == NULL) { | |
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140 |
| 509 | 141 if (index[i].name.data[0] == '/') { |
| 142 return ngx_http_internal_redirect(r, &index[i].name, &r->args); | |
| 143 } | |
|
201
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144 |
| 509 | 145 len = ilcf->max_index_len; |
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146 nlen = index[i].name.len; |
|
144
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147 |
| 509 | 148 } else { |
| 149 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
|
201
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150 |
| 509 | 151 e.ip = index[i].lengths->elts; |
| 152 e.request = r; | |
| 573 | 153 e.flushed = 1; |
| 509 | 154 |
| 563 | 155 /* 1 byte for terminating '\0' */ |
| 557 | 156 |
| 563 | 157 len = 1; |
|
201
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158 |
| 509 | 159 while (*(uintptr_t *) e.ip) { |
| 160 lcode = *(ngx_http_script_len_code_pt *) e.ip; | |
| 161 len += lcode(&e); | |
| 162 } | |
|
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163 |
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164 nlen = len; |
| 563 | 165 |
| 166 /* 16 bytes are preallocation */ | |
| 167 | |
| 168 len += 16; | |
| 509 | 169 } |
|
201
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170 |
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171 if (len > (size_t) (path.data + allocated - name)) { |
| 557 | 172 |
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173 name = ngx_http_map_uri_to_path(r, &path, &root, len); |
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174 if (name == NULL) { |
| 557 | 175 return NGX_ERROR; |
|
201
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176 } |
| 557 | 177 |
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178 allocated = path.len; |
|
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179 } |
|
201
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180 |
| 509 | 181 if (index[i].values == NULL) { |
| 557 | 182 |
| 183 /* index[i].name.len includes the terminating '\0' */ | |
| 184 | |
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185 ngx_memcpy(name, index[i].name.data, index[i].name.len); |
|
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186 |
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187 path.len = (name + index[i].name.len - 1) - path.data; |
| 1454 | 188 |
| 509 | 189 } else { |
| 190 e.ip = index[i].values->elts; | |
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191 e.pos = name; |
|
293
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|
192 |
| 509 | 193 while (*(uintptr_t *) e.ip) { |
| 194 code = *(ngx_http_script_code_pt *) e.ip; | |
| 195 code((ngx_http_script_engine_t *) &e); | |
|
396
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196 } |
|
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197 |
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198 if (*name == '/') { |
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199 uri.len = nlen - 1; |
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200 uri.data = name; |
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201 return ngx_http_internal_redirect(r, &uri, &r->args); |
|
396
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202 } |
|
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203 |
| 1454 | 204 path.len = e.pos - path.data; |
| 205 | |
| 509 | 206 *e.pos++ = '\0'; |
|
293
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207 } |
|
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208 |
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209 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "open index \"%V\"", &path); |
|
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210 |
| 1454 | 211 of.test_dir = 0; |
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212 of.valid = clcf->open_file_cache_valid; |
| 1772 | 213 of.min_uses = clcf->open_file_cache_min_uses; |
| 1454 | 214 of.errors = clcf->open_file_cache_errors; |
| 1457 | 215 of.events = clcf->open_file_cache_events; |
| 563 | 216 |
| 1799 | 217 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) |
| 218 != NGX_OK) | |
| 219 { | |
| 1454 | 220 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, of.err, |
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221 ngx_open_file_n " \"%s\" failed", path.data); |
|
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222 |
| 1454 | 223 if (of.err == 0) { |
| 224 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 225 } | |
|
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226 |
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227 if (of.err == NGX_ENOTDIR || of.err == NGX_EACCES) { |
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228 return ngx_http_index_error(r, path.data, of.err); |
|
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229 } |
|
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230 |
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231 if (!dir_tested) { |
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232 rc = ngx_http_index_test_dir(r, clcf, path.data, name - 1); |
|
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233 |
|
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234 if (rc != NGX_OK) { |
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235 return rc; |
|
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236 } |
|
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237 |
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238 dir_tested = 1; |
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239 } |
|
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240 |
| 1454 | 241 if (of.err == NGX_ENOENT) { |
|
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242 continue; |
|
41
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243 } |
|
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244 |
| 1454 | 245 ngx_log_error(NGX_LOG_ERR, log, of.err, |
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246 ngx_open_file_n " \"%s\" failed", path.data); |
|
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247 |
|
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248 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
|
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249 } |
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250 |
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251 uri.len = r->uri.len + nlen - 1; |
| 557 | 252 |
| 253 if (!clcf->alias) { | |
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254 uri.data = path.data + root; |
| 557 | 255 |
| 256 } else { | |
| 2049 | 257 uri.data = ngx_pnalloc(r->pool, uri.len); |
| 557 | 258 if (uri.data == NULL) { |
| 259 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 260 } | |
| 261 | |
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262 p = ngx_copy(uri.data, r->uri.data, r->uri.len); |
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263 ngx_memcpy(p, name, nlen - 1); |
|
199
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|
264 } |
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265 |
| 557 | 266 return ngx_http_internal_redirect(r, &uri, &r->args); |
|
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267 } |
|
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268 |
|
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269 return NGX_DECLINED; |
|
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270 } |
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271 |
|
24
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|
272 |
| 509 | 273 static ngx_int_t |
| 1454 | 274 ngx_http_index_test_dir(ngx_http_request_t *r, ngx_http_core_loc_conf_t *clcf, |
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275 u_char *path, u_char *last) |
| 509 | 276 { |
| 1454 | 277 u_char c; |
|
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278 ngx_str_t dir; |
| 1454 | 279 ngx_open_file_info_t of; |
| 509 | 280 |
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281 c = *last; |
| 1627 | 282 if (c != '/' || path == last) { |
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283 /* "alias" without trailing slash */ |
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284 c = *(++last); |
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285 } |
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286 *last = '\0'; |
|
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287 |
|
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288 dir.len = last - path; |
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289 dir.data = path; |
|
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290 |
| 1454 | 291 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
|
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292 "http index check dir: \"%V\"", &dir); |
|
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293 |
| 1454 | 294 of.test_dir = 1; |
|
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295 of.valid = clcf->open_file_cache_valid; |
| 1772 | 296 of.min_uses = 0; |
| 1454 | 297 of.errors = clcf->open_file_cache_errors; |
|
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|
298 |
|
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299 if (ngx_open_cached_file(clcf->open_file_cache, &dir, &of, r->pool) |
| 1454 | 300 != NGX_OK) |
| 301 { | |
| 302 if (of.err) { | |
| 303 | |
| 304 if (of.err == NGX_ENOENT) { | |
|
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305 *last = c; |
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306 return ngx_http_index_error(r, dir.data, NGX_ENOENT); |
| 1454 | 307 } |
| 308 | |
| 309 ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err, | |
|
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310 ngx_open_file_n " \"%s\" failed", dir.data); |
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311 } |
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312 |
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313 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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314 } |
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315 |
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316 *last = c; |
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317 |
| 1454 | 318 if (of.is_dir) { |
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319 return NGX_OK; |
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320 } |
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321 |
| 509 | 322 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
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323 "\"%s\" is not a directory", dir.data); |
| 509 | 324 |
| 325 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
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326 } |
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327 |
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328 |
| 509 | 329 static ngx_int_t |
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330 ngx_http_index_error(ngx_http_request_t *r, u_char *file, ngx_err_t err) |
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331 { |
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332 if (err == NGX_EACCES) { |
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333 ngx_log_error(NGX_LOG_ERR, r->connection->log, err, |
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334 "\"%s\" is forbidden", file); |
| 577 | 335 |
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336 return NGX_HTTP_FORBIDDEN; |
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337 } |
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338 |
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339 ngx_log_error(NGX_LOG_ERR, r->connection->log, err, |
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340 "\"%s\" is not found", file); |
| 509 | 341 |
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342 return NGX_HTTP_NOT_FOUND; |
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343 } |
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344 |
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345 |
| 509 | 346 static void * |
| 347 ngx_http_index_create_loc_conf(ngx_conf_t *cf) | |
| 348 { | |
| 349 ngx_http_index_loc_conf_t *conf; | |
| 350 | |
| 351 conf = ngx_palloc(cf->pool, sizeof(ngx_http_index_loc_conf_t)); | |
| 352 if (conf == NULL) { | |
| 353 return NGX_CONF_ERROR; | |
| 354 } | |
| 355 | |
| 356 conf->indices = NULL; | |
| 681 | 357 conf->max_index_len = 0; |
| 509 | 358 |
| 359 return conf; | |
| 360 } | |
| 361 | |
| 362 | |
| 363 static char * | |
| 364 ngx_http_index_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 365 { | |
| 366 ngx_http_index_loc_conf_t *prev = parent; | |
| 367 ngx_http_index_loc_conf_t *conf = child; | |
| 368 | |
| 369 ngx_http_index_t *index; | |
| 370 | |
| 371 if (conf->indices == NULL) { | |
| 372 conf->indices = prev->indices; | |
| 373 conf->max_index_len = prev->max_index_len; | |
| 374 } | |
| 375 | |
| 376 if (conf->indices == NULL) { | |
| 377 conf->indices = ngx_array_create(cf->pool, 1, sizeof(ngx_http_index_t)); | |
| 378 if (conf->indices == NULL) { | |
| 379 return NGX_CONF_ERROR; | |
| 380 } | |
| 381 | |
| 382 index = ngx_array_push(conf->indices); | |
| 383 if (index == NULL) { | |
| 384 return NGX_CONF_ERROR; | |
| 385 } | |
| 386 | |
| 387 index->name.len = sizeof(NGX_HTTP_DEFAULT_INDEX); | |
| 388 index->name.data = (u_char *) NGX_HTTP_DEFAULT_INDEX; | |
| 389 index->lengths = NULL; | |
| 390 index->values = NULL; | |
| 391 | |
| 392 conf->max_index_len = sizeof(NGX_HTTP_DEFAULT_INDEX); | |
| 393 | |
| 394 return NGX_CONF_OK; | |
| 395 } | |
| 396 | |
| 397 return NGX_CONF_OK; | |
| 398 } | |
| 399 | |
| 400 | |
| 681 | 401 static ngx_int_t |
| 402 ngx_http_index_init(ngx_conf_t *cf) | |
| 403 { | |
| 404 ngx_http_handler_pt *h; | |
| 405 ngx_http_core_main_conf_t *cmcf; | |
| 406 | |
| 407 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); | |
| 408 | |
| 409 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers); | |
| 410 if (h == NULL) { | |
| 411 return NGX_ERROR; | |
| 412 } | |
| 413 | |
| 414 *h = ngx_http_index_handler; | |
| 415 | |
| 416 return NGX_OK; | |
| 417 } | |
| 418 | |
| 419 | |
| 509 | 420 /* TODO: warn about duplicate indices */ |
| 421 | |
| 422 static char * | |
| 423 ngx_http_index_set_index(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 424 { | |
| 425 ngx_http_index_loc_conf_t *ilcf = conf; | |
| 426 | |
| 681 | 427 ngx_str_t *value; |
| 509 | 428 ngx_uint_t i, n; |
| 429 ngx_http_index_t *index; | |
| 430 ngx_http_script_compile_t sc; | |
| 431 | |
| 432 if (ilcf->indices == NULL) { | |
| 433 ilcf->indices = ngx_array_create(cf->pool, 2, sizeof(ngx_http_index_t)); | |
| 434 if (ilcf->indices == NULL) { | |
| 435 return NGX_CONF_ERROR; | |
| 436 } | |
| 437 } | |
| 438 | |
| 439 value = cf->args->elts; | |
| 440 | |
| 441 for (i = 1; i < cf->args->nelts; i++) { | |
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442 |
| 509 | 443 if (value[i].data[0] == '/' && i != cf->args->nelts - 1) { |
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444 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
| 509 | 445 "only the last index in \"index\" directive " |
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446 "should be absolute"); |
| 509 | 447 } |
| 448 | |
| 449 if (value[i].len == 0) { | |
| 450 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 451 "index \"%V\" in \"index\" directive is invalid", | |
| 452 &value[1]); | |
| 453 return NGX_CONF_ERROR; | |
| 454 } | |
| 455 | |
| 456 index = ngx_array_push(ilcf->indices); | |
| 457 if (index == NULL) { | |
| 458 return NGX_CONF_ERROR; | |
| 459 } | |
| 460 | |
| 461 index->name.len = value[i].len; | |
| 462 index->name.data = value[i].data; | |
| 463 index->lengths = NULL; | |
| 464 index->values = NULL; | |
| 465 | |
| 466 n = ngx_http_script_variables_count(&value[i]); | |
| 467 | |
| 468 if (n == 0) { | |
| 681 | 469 if (ilcf->max_index_len < index->name.len) { |
| 509 | 470 ilcf->max_index_len = index->name.len; |
| 471 } | |
| 472 | |
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473 if (index->name.data[0] == '/') { |
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474 continue; |
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475 } |
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476 |
| 573 | 477 /* include the terminating '\0' to the length to use ngx_copy() */ |
| 557 | 478 index->name.len++; |
| 479 | |
| 509 | 480 continue; |
| 481 } | |
| 482 | |
| 483 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 484 | |
| 485 sc.cf = cf; | |
| 486 sc.source = &value[i]; | |
| 487 sc.lengths = &index->lengths; | |
| 488 sc.values = &index->values; | |
| 489 sc.variables = n; | |
| 490 sc.complete_lengths = 1; | |
| 491 sc.complete_values = 1; | |
| 492 | |
| 493 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 494 return NGX_CONF_ERROR; | |
| 495 } | |
| 496 } | |
| 497 | |
| 498 return NGX_CONF_OK; | |
| 499 } |