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50
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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660
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4 * Copyright (C) Nginx, Inc.
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50
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5 */
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6
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7
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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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11
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12
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13 static ngx_int_t ngx_http_static_handler(ngx_http_request_t *r);
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230
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14 static ngx_int_t ngx_http_static_init(ngx_conf_t *cf);
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50
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15
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16
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17 ngx_http_module_t ngx_http_static_module_ctx = {
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58
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18 NULL, /* preconfiguration */
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230
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19 ngx_http_static_init, /* postconfiguration */
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50
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20
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21 NULL, /* create main configuration */
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22 NULL, /* init main configuration */
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126
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23
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24 NULL, /* create server configuration */
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25 NULL, /* merge server configuration */
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126
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26
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332
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27 NULL, /* create location configuration */
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28 NULL /* merge location configuration */
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126
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29 };
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30
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31
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32 ngx_module_t ngx_http_static_module = {
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58
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33 NGX_MODULE_V1,
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34 &ngx_http_static_module_ctx, /* module context */
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332
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35 NULL, /* module directives */
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36 NGX_HTTP_MODULE, /* module type */
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90
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37 NULL, /* init master */
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230
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38 NULL, /* init module */
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90
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39 NULL, /* init process */
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40 NULL, /* init thread */
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41 NULL, /* exit thread */
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42 NULL, /* exit process */
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43 NULL, /* exit master */
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44 NGX_MODULE_V1_PADDING
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50
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45 };
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46
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47
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58
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48 static ngx_int_t
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49 ngx_http_static_handler(ngx_http_request_t *r)
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50
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50 {
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106
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51 u_char *last, *location;
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380
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52 size_t root, len;
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332
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53 ngx_str_t path;
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106
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54 ngx_int_t rc;
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55 ngx_uint_t level;
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56 ngx_log_t *log;
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57 ngx_buf_t *b;
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58 ngx_chain_t out;
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332
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59 ngx_open_file_info_t of;
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106
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60 ngx_http_core_loc_conf_t *clcf;
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50
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61
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398
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62 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) {
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188
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63 return NGX_HTTP_NOT_ALLOWED;
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64 }
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65
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66 if (r->uri.data[r->uri.len - 1] == '/') {
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67 return NGX_DECLINED;
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68 }
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69
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70 log = r->connection->log;
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71
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72 /*
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106
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73 * ngx_http_map_uri_to_path() allocates memory for terminating '\0'
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74 * so we do not need to reserve memory for '/' for possible redirect
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75 */
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76
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248
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77 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
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106
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78 if (last == NULL) {
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79 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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50
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80 }
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81
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332
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82 path.len = last - path.data;
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83
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84 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
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106
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85 "http filename: \"%s\"", path.data);
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86
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332
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87 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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112
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88
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384
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89 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
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90
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532
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91 of.read_ahead = clcf->read_ahead;
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390
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92 of.directio = clcf->directio;
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358
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93 of.valid = clcf->open_file_cache_valid;
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94 of.min_uses = clcf->open_file_cache_min_uses;
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332
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95 of.errors = clcf->open_file_cache_errors;
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96 of.events = clcf->open_file_cache_events;
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664
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97
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98 if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
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99 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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100 }
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332
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101
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362
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102 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
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103 != NGX_OK)
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104 {
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332
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105 switch (of.err) {
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50
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106
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332
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107 case 0:
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108 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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109
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110 case NGX_ENOENT:
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111 case NGX_ENOTDIR:
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112 case NGX_ENAMETOOLONG:
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113
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114 level = NGX_LOG_ERR;
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115 rc = NGX_HTTP_NOT_FOUND;
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332
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116 break;
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117
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332
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118 case NGX_EACCES:
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662
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119 #if (NGX_HAVE_OPENAT)
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120 case NGX_EMLINK:
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121 case NGX_ELOOP:
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122 #endif
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332
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123
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124 level = NGX_LOG_ERR;
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125 rc = NGX_HTTP_FORBIDDEN;
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332
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126 break;
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127
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332
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128 default:
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129
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130 level = NGX_LOG_CRIT;
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131 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
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332
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132 break;
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133 }
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134
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135 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
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332
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136 ngx_log_error(level, log, of.err,
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482
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137 "%s \"%s\" failed", of.failed, path.data);
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76
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138 }
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139
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140 return rc;
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141 }
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142
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438
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143 r->root_tested = !r->error_page;
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388
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144
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356
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145 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd);
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146
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332
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147 if (of.is_dir) {
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148
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149 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir");
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150
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644
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151 ngx_http_clear_location(r);
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152
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153 r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
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154 if (r->headers_out.location == NULL) {
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155 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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156 }
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157
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380
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158 len = r->uri.len + 1;
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159
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160 if (!clcf->alias && clcf->root_lengths == NULL && r->args.len == 0) {
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106
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161 location = path.data + clcf->root.len;
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162
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380
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163 *last = '/';
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164
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106
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165 } else {
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380
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166 if (r->args.len) {
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167 len += r->args.len + 1;
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168 }
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169
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382
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170 location = ngx_pnalloc(r->pool, len);
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106
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171 if (location == NULL) {
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172 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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173 }
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174
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122
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175 last = ngx_copy(location, r->uri.data, r->uri.len);
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380
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176
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177 *last = '/';
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106
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178
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380
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179 if (r->args.len) {
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180 *++last = '?';
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181 ngx_memcpy(++last, r->args.data, r->args.len);
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182 }
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183 }
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106
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184
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58
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185 /*
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186 * we do not need to set the r->headers_out.location->hash and
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187 * r->headers_out.location->key fields
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188 */
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189
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380
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190 r->headers_out.location->value.len = len;
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191 r->headers_out.location->value.data = location;
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192
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193 return NGX_HTTP_MOVED_PERMANENTLY;
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194 }
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195
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196 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */
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197
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332
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198 if (!of.is_file) {
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568
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199 ngx_log_error(NGX_LOG_CRIT, log, 0,
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200 "\"%s\" is not a regular file", path.data);
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201
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202 return NGX_HTTP_NOT_FOUND;
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203 }
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204
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205 #endif
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206
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398
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207 if (r->method & NGX_HTTP_POST) {
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208 return NGX_HTTP_NOT_ALLOWED;
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209 }
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210
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211 rc = ngx_http_discard_request_body(r);
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212
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213 if (rc != NGX_OK) {
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214 return rc;
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215 }
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216
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217 log->action = "sending response to client";
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218
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219 r->headers_out.status = NGX_HTTP_OK;
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332
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220 r->headers_out.content_length_n = of.size;
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221 r->headers_out.last_modified_time = of.mtime;
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222
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680
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223 if (ngx_http_set_etag(r) != NGX_OK) {
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224 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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225 }
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226
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227 if (ngx_http_set_content_type(r) != NGX_OK) {
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228 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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229 }
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230
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430
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231 if (r != r->main && of.size == 0) {
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132
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232 return ngx_http_send_header(r);
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233 }
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234
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136
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235 r->allow_ranges = 1;
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236
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126
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237 /* we need to allocate all before the header would be sent */
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238
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126
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239 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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240 if (b == NULL) {
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241 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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242 }
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243
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126
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244 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
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245 if (b->file == NULL) {
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246 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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247 }
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248
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249 rc = ngx_http_send_header(r);
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250
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134
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251 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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252 return rc;
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253 }
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254
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255 b->file_pos = 0;
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332
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256 b->file_last = of.size;
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257
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126
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258 b->in_file = b->file_last ? 1: 0;
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146
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259 b->last_buf = (r == r->main) ? 1: 0;
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126
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260 b->last_in_chain = 1;
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261
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356
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262 b->file->fd = of.fd;
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106
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263 b->file->name = path;
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264 b->file->log = log;
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406
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265 b->file->directio = of.is_directio;
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266
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267 out.buf = b;
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268 out.next = NULL;
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269
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270 return ngx_http_output_filter(r, &out);
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271 }
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272
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273
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58
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274 static ngx_int_t
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230
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275 ngx_http_static_init(ngx_conf_t *cf)
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50
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276 {
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277 ngx_http_handler_pt *h;
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278 ngx_http_core_main_conf_t *cmcf;
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279
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230
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280 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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126
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281
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282 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
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283 if (h == NULL) {
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284 return NGX_ERROR;
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285 }
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286
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287 *h = ngx_http_static_handler;
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288
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289 return NGX_OK;
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290 }
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