Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_index_module.c @ 6182:07e416ece597
Updated OpenSSL used for win32 builds.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 15 Jun 2015 20:20:12 +0300 |
parents | 3d50d86f3572 |
children | 3fb9b5eb75c0 |
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 |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_http.h> |
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13 typedef struct { |
509 | 14 ngx_str_t name; |
15 ngx_array_t *lengths; | |
16 ngx_array_t *values; | |
17 } ngx_http_index_t; | |
18 | |
19 | |
20 typedef struct { | |
21 ngx_array_t *indices; /* array of ngx_http_index_t */ | |
469 | 22 size_t max_index_len; |
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23 } ngx_http_index_loc_conf_t; |
99
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24 |
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25 |
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26 #define NGX_HTTP_DEFAULT_INDEX "index.html" |
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29 static ngx_int_t ngx_http_index_test_dir(ngx_http_request_t *r, |
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30 ngx_http_core_loc_conf_t *clcf, u_char *path, u_char *last); |
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31 static ngx_int_t ngx_http_index_error(ngx_http_request_t *r, |
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32 ngx_http_core_loc_conf_t *clcf, u_char *file, ngx_err_t err); |
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33 |
681 | 34 static ngx_int_t ngx_http_index_init(ngx_conf_t *cf); |
201
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35 static void *ngx_http_index_create_loc_conf(ngx_conf_t *cf); |
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36 static char *ngx_http_index_merge_loc_conf(ngx_conf_t *cf, |
509 | 37 void *parent, void *child); |
41
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38 static char *ngx_http_index_set_index(ngx_conf_t *cf, ngx_command_t *cmd, |
509 | 39 void *conf); |
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40 |
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41 |
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42 static ngx_command_t ngx_http_index_commands[] = { |
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43 |
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44 { ngx_string("index"), |
509 | 45 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
199
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46 ngx_http_index_set_index, |
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47 NGX_HTTP_LOC_CONF_OFFSET, |
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48 0, |
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49 NULL }, |
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50 |
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51 ngx_null_command |
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52 }; |
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53 |
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54 |
667 | 55 static ngx_http_module_t ngx_http_index_module_ctx = { |
509 | 56 NULL, /* preconfiguration */ |
681 | 57 ngx_http_index_init, /* postconfiguration */ |
177
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58 |
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59 NULL, /* create main configuration */ |
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60 NULL, /* init main configuration */ |
69
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61 |
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62 NULL, /* create server configuration */ |
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63 NULL, /* merge server configuration */ |
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64 |
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65 ngx_http_index_create_loc_conf, /* create location configuration */ |
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66 ngx_http_index_merge_loc_conf /* merge location configuration */ |
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67 }; |
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68 |
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70 ngx_module_t ngx_http_index_module = { |
509 | 71 NGX_MODULE_V1, |
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72 &ngx_http_index_module_ctx, /* module context */ |
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73 ngx_http_index_commands, /* module directives */ |
96
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74 NGX_HTTP_MODULE, /* module type */ |
541 | 75 NULL, /* init master */ |
681 | 76 NULL, /* init module */ |
541 | 77 NULL, /* init process */ |
78 NULL, /* init thread */ | |
79 NULL, /* exit thread */ | |
80 NULL, /* exit process */ | |
81 NULL, /* exit master */ | |
82 NGX_MODULE_V1_PADDING | |
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83 }; |
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84 |
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85 |
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86 /* |
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87 * Try to open/test the first index file before the test of directory |
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88 * existence because valid requests should prevail over invalid ones. |
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89 * If open()/stat() of a file will fail then stat() of a directory |
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90 * should be faster because kernel may have already cached some data. |
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91 * Besides, Win32 may return ERROR_PATH_NOT_FOUND (NGX_ENOTDIR) at once. |
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92 * Unix has ENOTDIR error; however, it's less helpful than Win32's one: |
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93 * it only indicates that path points to a regular file, not a directory. |
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94 */ |
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95 |
509 | 96 static ngx_int_t |
97 ngx_http_index_handler(ngx_http_request_t *r) | |
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98 { |
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99 u_char *p, *name; |
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100 size_t len, root, reserve, allocated; |
509 | 101 ngx_int_t rc; |
1454 | 102 ngx_str_t path, uri; |
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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 |
1454 | 120 ilcf = ngx_http_get_module_loc_conf(r, ngx_http_index_module); |
121 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
122 | |
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123 allocated = 0; |
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124 root = 0; |
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125 dir_tested = 0; |
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126 name = NULL; |
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127 /* suppress MSVC warning */ |
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128 path.data = NULL; |
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129 |
509 | 130 index = ilcf->indices->elts; |
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131 for (i = 0; i < ilcf->indices->nelts; i++) { |
509 | 132 |
133 if (index[i].lengths == NULL) { | |
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134 |
509 | 135 if (index[i].name.data[0] == '/') { |
136 return ngx_http_internal_redirect(r, &index[i].name, &r->args); | |
137 } | |
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138 |
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139 reserve = ilcf->max_index_len; |
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140 len = index[i].name.len; |
144
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141 |
509 | 142 } else { |
143 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
201
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144 |
509 | 145 e.ip = index[i].lengths->elts; |
146 e.request = r; | |
573 | 147 e.flushed = 1; |
509 | 148 |
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149 /* 1 is for terminating '\0' as in static names */ |
563 | 150 len = 1; |
201
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151 |
509 | 152 while (*(uintptr_t *) e.ip) { |
153 lcode = *(ngx_http_script_len_code_pt *) e.ip; | |
154 len += lcode(&e); | |
155 } | |
44
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156 |
563 | 157 /* 16 bytes are preallocation */ |
158 | |
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159 reserve = len + 16; |
509 | 160 } |
201
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161 |
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162 if (reserve > allocated) { |
557 | 163 |
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164 name = ngx_http_map_uri_to_path(r, &path, &root, reserve); |
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165 if (name == NULL) { |
557 | 166 return NGX_ERROR; |
201
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167 } |
557 | 168 |
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169 allocated = path.data + path.len - name; |
287
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170 } |
201
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171 |
509 | 172 if (index[i].values == NULL) { |
557 | 173 |
174 /* index[i].name.len includes the terminating '\0' */ | |
175 | |
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176 ngx_memcpy(name, index[i].name.data, index[i].name.len); |
0
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177 |
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178 path.len = (name + index[i].name.len - 1) - path.data; |
1454 | 179 |
509 | 180 } else { |
181 e.ip = index[i].values->elts; | |
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182 e.pos = name; |
293
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183 |
509 | 184 while (*(uintptr_t *) e.ip) { |
185 code = *(ngx_http_script_code_pt *) e.ip; | |
186 code((ngx_http_script_engine_t *) &e); | |
396
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187 } |
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188 |
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189 if (*name == '/') { |
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190 uri.len = len - 1; |
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191 uri.data = name; |
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192 return ngx_http_internal_redirect(r, &uri, &r->args); |
396
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193 } |
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194 |
1454 | 195 path.len = e.pos - path.data; |
196 | |
2564 | 197 *e.pos = '\0'; |
293
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198 } |
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199 |
2405 | 200 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
201 "open index \"%V\"", &path); | |
0
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202 |
2068
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203 ngx_memzero(&of, sizeof(ngx_open_file_info_t)); |
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204 |
3178 | 205 of.read_ahead = clcf->read_ahead; |
2129 | 206 of.directio = clcf->directio; |
1767
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207 of.valid = clcf->open_file_cache_valid; |
1772 | 208 of.min_uses = clcf->open_file_cache_min_uses; |
2756
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209 of.test_only = 1; |
1454 | 210 of.errors = clcf->open_file_cache_errors; |
1457 | 211 of.events = clcf->open_file_cache_events; |
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212 |
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213 if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) { |
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214 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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215 } |
563 | 216 |
1799 | 217 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) |
218 != NGX_OK) | |
219 { | |
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220 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, of.err, |
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221 "%s \"%s\" failed", of.failed, path.data); |
46
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222 |
1454 | 223 if (of.err == 0) { |
224 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
225 } | |
47
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diff
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226 |
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227 #if (NGX_HAVE_OPENAT) |
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228 if (of.err == NGX_EMLINK |
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229 || of.err == NGX_ELOOP) |
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230 { |
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231 return NGX_HTTP_FORBIDDEN; |
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232 } |
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233 #endif |
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234 |
3160
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235 if (of.err == NGX_ENOTDIR |
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236 || of.err == NGX_ENAMETOOLONG |
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237 || of.err == NGX_EACCES) |
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238 { |
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239 return ngx_http_index_error(r, clcf, path.data, of.err); |
46
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240 } |
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241 |
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242 if (!dir_tested) { |
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243 rc = ngx_http_index_test_dir(r, clcf, path.data, name - 1); |
46
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244 |
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245 if (rc != NGX_OK) { |
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246 return rc; |
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247 } |
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248 |
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249 dir_tested = 1; |
46
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250 } |
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251 |
1454 | 252 if (of.err == NGX_ENOENT) { |
10
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253 continue; |
41
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diff
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254 } |
0
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255 |
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256 ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err, |
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257 "%s \"%s\" failed", of.failed, path.data); |
10
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258 |
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259 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
0
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260 } |
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261 |
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262 uri.len = r->uri.len + len - 1; |
557 | 263 |
264 if (!clcf->alias) { | |
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265 uri.data = path.data + root; |
557 | 266 |
267 } else { | |
2049 | 268 uri.data = ngx_pnalloc(r->pool, uri.len); |
557 | 269 if (uri.data == NULL) { |
270 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
271 } | |
272 | |
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273 p = ngx_copy(uri.data, r->uri.data, r->uri.len); |
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274 ngx_memcpy(p, name, len - 1); |
199
a65b630b3a66
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diff
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|
275 } |
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276 |
557 | 277 return ngx_http_internal_redirect(r, &uri, &r->args); |
0
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278 } |
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279 |
10
4f3879d9b6f6
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280 return NGX_DECLINED; |
0
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281 } |
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|
282 |
24
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diff
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|
283 |
509 | 284 static ngx_int_t |
1454 | 285 ngx_http_index_test_dir(ngx_http_request_t *r, ngx_http_core_loc_conf_t *clcf, |
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286 u_char *path, u_char *last) |
509 | 287 { |
1454 | 288 u_char c; |
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289 ngx_str_t dir; |
1454 | 290 ngx_open_file_info_t of; |
509 | 291 |
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292 c = *last; |
1627 | 293 if (c != '/' || path == last) { |
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|
294 /* "alias" without trailing slash */ |
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295 c = *(++last); |
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296 } |
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|
297 *last = '\0'; |
46
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|
298 |
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|
299 dir.len = last - path; |
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300 dir.data = path; |
46
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301 |
1454 | 302 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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303 "http index check dir: \"%V\"", &dir); |
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304 |
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305 ngx_memzero(&of, sizeof(ngx_open_file_info_t)); |
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306 |
1454 | 307 of.test_dir = 1; |
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308 of.test_only = 1; |
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309 of.valid = clcf->open_file_cache_valid; |
1454 | 310 of.errors = clcf->open_file_cache_errors; |
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311 |
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312 if (ngx_http_set_disable_symlinks(r, clcf, &dir, &of) != NGX_OK) { |
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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 if (ngx_open_cached_file(clcf->open_file_cache, &dir, &of, r->pool) |
1454 | 317 != NGX_OK) |
318 { | |
319 if (of.err) { | |
320 | |
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321 #if (NGX_HAVE_OPENAT) |
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322 if (of.err == NGX_EMLINK |
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323 || of.err == NGX_ELOOP) |
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324 { |
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325 return NGX_HTTP_FORBIDDEN; |
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326 } |
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327 #endif |
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328 |
1454 | 329 if (of.err == NGX_ENOENT) { |
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330 *last = c; |
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331 return ngx_http_index_error(r, clcf, dir.data, NGX_ENOENT); |
1454 | 332 } |
333 | |
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334 if (of.err == NGX_EACCES) { |
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335 |
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336 *last = c; |
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337 |
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338 /* |
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339 * ngx_http_index_test_dir() is called after the first index |
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340 * file testing has returned an error distinct from NGX_EACCES. |
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341 * This means that directory searching is allowed. |
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342 */ |
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343 |
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344 return NGX_OK; |
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345 } |
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346 |
1454 | 347 ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err, |
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348 "%s \"%s\" failed", of.failed, dir.data); |
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349 } |
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350 |
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351 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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352 } |
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353 |
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354 *last = c; |
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355 |
1454 | 356 if (of.is_dir) { |
46
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357 return NGX_OK; |
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358 } |
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359 |
509 | 360 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
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361 "\"%s\" is not a directory", dir.data); |
509 | 362 |
363 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
144
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364 } |
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365 |
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366 |
509 | 367 static ngx_int_t |
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368 ngx_http_index_error(ngx_http_request_t *r, ngx_http_core_loc_conf_t *clcf, |
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369 u_char *file, ngx_err_t err) |
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370 { |
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371 if (err == NGX_EACCES) { |
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372 ngx_log_error(NGX_LOG_ERR, r->connection->log, err, |
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373 "\"%s\" is forbidden", file); |
577 | 374 |
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375 return NGX_HTTP_FORBIDDEN; |
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376 } |
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377 |
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378 if (clcf->log_not_found) { |
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379 ngx_log_error(NGX_LOG_ERR, r->connection->log, err, |
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380 "\"%s\" is not found", file); |
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381 } |
509 | 382 |
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383 return NGX_HTTP_NOT_FOUND; |
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384 } |
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385 |
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386 |
509 | 387 static void * |
388 ngx_http_index_create_loc_conf(ngx_conf_t *cf) | |
389 { | |
390 ngx_http_index_loc_conf_t *conf; | |
391 | |
392 conf = ngx_palloc(cf->pool, sizeof(ngx_http_index_loc_conf_t)); | |
393 if (conf == NULL) { | |
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394 return NULL; |
509 | 395 } |
396 | |
397 conf->indices = NULL; | |
681 | 398 conf->max_index_len = 0; |
509 | 399 |
400 return conf; | |
401 } | |
402 | |
403 | |
404 static char * | |
405 ngx_http_index_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
406 { | |
407 ngx_http_index_loc_conf_t *prev = parent; | |
408 ngx_http_index_loc_conf_t *conf = child; | |
409 | |
410 ngx_http_index_t *index; | |
411 | |
412 if (conf->indices == NULL) { | |
413 conf->indices = prev->indices; | |
414 conf->max_index_len = prev->max_index_len; | |
415 } | |
416 | |
417 if (conf->indices == NULL) { | |
418 conf->indices = ngx_array_create(cf->pool, 1, sizeof(ngx_http_index_t)); | |
419 if (conf->indices == NULL) { | |
420 return NGX_CONF_ERROR; | |
421 } | |
422 | |
423 index = ngx_array_push(conf->indices); | |
424 if (index == NULL) { | |
425 return NGX_CONF_ERROR; | |
426 } | |
427 | |
428 index->name.len = sizeof(NGX_HTTP_DEFAULT_INDEX); | |
429 index->name.data = (u_char *) NGX_HTTP_DEFAULT_INDEX; | |
430 index->lengths = NULL; | |
431 index->values = NULL; | |
432 | |
433 conf->max_index_len = sizeof(NGX_HTTP_DEFAULT_INDEX); | |
434 | |
435 return NGX_CONF_OK; | |
436 } | |
437 | |
438 return NGX_CONF_OK; | |
439 } | |
440 | |
441 | |
681 | 442 static ngx_int_t |
443 ngx_http_index_init(ngx_conf_t *cf) | |
444 { | |
445 ngx_http_handler_pt *h; | |
446 ngx_http_core_main_conf_t *cmcf; | |
447 | |
448 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); | |
449 | |
450 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers); | |
451 if (h == NULL) { | |
452 return NGX_ERROR; | |
453 } | |
454 | |
455 *h = ngx_http_index_handler; | |
456 | |
457 return NGX_OK; | |
458 } | |
459 | |
460 | |
509 | 461 /* TODO: warn about duplicate indices */ |
462 | |
463 static char * | |
464 ngx_http_index_set_index(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
465 { | |
466 ngx_http_index_loc_conf_t *ilcf = conf; | |
467 | |
681 | 468 ngx_str_t *value; |
509 | 469 ngx_uint_t i, n; |
470 ngx_http_index_t *index; | |
471 ngx_http_script_compile_t sc; | |
472 | |
473 if (ilcf->indices == NULL) { | |
474 ilcf->indices = ngx_array_create(cf->pool, 2, sizeof(ngx_http_index_t)); | |
475 if (ilcf->indices == NULL) { | |
476 return NGX_CONF_ERROR; | |
477 } | |
478 } | |
479 | |
480 value = cf->args->elts; | |
481 | |
482 for (i = 1; i < cf->args->nelts; i++) { | |
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483 |
509 | 484 if (value[i].data[0] == '/' && i != cf->args->nelts - 1) { |
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485 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
509 | 486 "only the last index in \"index\" directive " |
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487 "should be absolute"); |
509 | 488 } |
489 | |
490 if (value[i].len == 0) { | |
491 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
492 "index \"%V\" in \"index\" directive is invalid", | |
493 &value[1]); | |
494 return NGX_CONF_ERROR; | |
495 } | |
496 | |
497 index = ngx_array_push(ilcf->indices); | |
498 if (index == NULL) { | |
499 return NGX_CONF_ERROR; | |
500 } | |
501 | |
502 index->name.len = value[i].len; | |
503 index->name.data = value[i].data; | |
504 index->lengths = NULL; | |
505 index->values = NULL; | |
506 | |
507 n = ngx_http_script_variables_count(&value[i]); | |
508 | |
509 if (n == 0) { | |
681 | 510 if (ilcf->max_index_len < index->name.len) { |
509 | 511 ilcf->max_index_len = index->name.len; |
512 } | |
513 | |
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514 if (index->name.data[0] == '/') { |
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515 continue; |
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516 } |
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517 |
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518 /* include the terminating '\0' to the length to use ngx_memcpy() */ |
557 | 519 index->name.len++; |
520 | |
509 | 521 continue; |
522 } | |
523 | |
524 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
525 | |
526 sc.cf = cf; | |
527 sc.source = &value[i]; | |
528 sc.lengths = &index->lengths; | |
529 sc.values = &index->values; | |
530 sc.variables = n; | |
531 sc.complete_lengths = 1; | |
532 sc.complete_values = 1; | |
533 | |
534 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
535 return NGX_CONF_ERROR; | |
536 } | |
537 } | |
538 | |
539 return NGX_CONF_OK; | |
540 } |