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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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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 static ngx_int_t ngx_http_static_handler(ngx_http_request_t *r);
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230
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13 static ngx_int_t ngx_http_static_init(ngx_conf_t *cf);
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50
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14
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15
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16 ngx_http_module_t ngx_http_static_module_ctx = {
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58
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17 NULL, /* preconfiguration */
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230
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18 ngx_http_static_init, /* postconfiguration */
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19
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20 NULL, /* create main configuration */
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21 NULL, /* init main configuration */
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126
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22
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23 NULL, /* create server configuration */
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24 NULL, /* merge server configuration */
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126
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25
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332
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26 NULL, /* create location configuration */
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27 NULL /* merge location configuration */
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126
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28 };
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29
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30
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31 ngx_module_t ngx_http_static_module = {
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58
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32 NGX_MODULE_V1,
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33 &ngx_http_static_module_ctx, /* module context */
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332
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34 NULL, /* module directives */
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35 NGX_HTTP_MODULE, /* module type */
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90
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36 NULL, /* init master */
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230
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37 NULL, /* init module */
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90
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38 NULL, /* init process */
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39 NULL, /* init thread */
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40 NULL, /* exit thread */
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41 NULL, /* exit process */
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42 NULL, /* exit master */
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43 NGX_MODULE_V1_PADDING
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50
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44 };
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45
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46
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58
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47 static ngx_int_t
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48 ngx_http_static_handler(ngx_http_request_t *r)
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50
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49 {
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106
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50 u_char *last, *location;
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248
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51 size_t root;
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332
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52 ngx_str_t path;
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106
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53 ngx_int_t rc;
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54 ngx_uint_t level;
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55 ngx_log_t *log;
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56 ngx_buf_t *b;
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57 ngx_chain_t out;
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332
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58 ngx_open_file_info_t of;
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106
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59 ngx_http_core_loc_conf_t *clcf;
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50
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60
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378
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61 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) {
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188
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62 return NGX_HTTP_NOT_ALLOWED;
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63 }
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64
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65 if (r->uri.data[r->uri.len - 1] == '/') {
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66 return NGX_DECLINED;
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67 }
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68
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69 /* TODO: Win32 */
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70 if (r->zero_in_uri) {
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71 return NGX_DECLINED;
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72 }
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73
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74 log = r->connection->log;
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75
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76 /*
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106
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77 * ngx_http_map_uri_to_path() allocates memory for terminating '\0'
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78 * so we do not need to reserve memory for '/' for possible redirect
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50
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79 */
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80
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248
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81 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
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106
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82 if (last == NULL) {
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83 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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50
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84 }
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85
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332
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86 path.len = last - path.data;
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87
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88 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
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106
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89 "http filename: \"%s\"", path.data);
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90
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332
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91 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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112
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92
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332
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93 of.test_dir = 0;
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358
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94 of.valid = clcf->open_file_cache_valid;
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95 of.min_uses = clcf->open_file_cache_min_uses;
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332
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96 of.errors = clcf->open_file_cache_errors;
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97 of.events = clcf->open_file_cache_events;
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98
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362
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99 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
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100 != NGX_OK)
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101 {
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332
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102 switch (of.err) {
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103
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332
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104 case 0:
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105 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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106
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107 case NGX_ENOENT:
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108 case NGX_ENOTDIR:
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109 case NGX_ENAMETOOLONG:
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110
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111 level = NGX_LOG_ERR;
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112 rc = NGX_HTTP_NOT_FOUND;
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332
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113 break;
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114
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332
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115 case NGX_EACCES:
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116
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117 level = NGX_LOG_ERR;
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118 rc = NGX_HTTP_FORBIDDEN;
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332
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119 break;
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120
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332
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121 default:
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122
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123 level = NGX_LOG_CRIT;
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124 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
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332
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125 break;
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126 }
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127
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76
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128 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
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332
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129 ngx_log_error(level, log, of.err,
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106
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130 ngx_open_file_n " \"%s\" failed", path.data);
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76
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131 }
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132
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133 return rc;
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134 }
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135
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356
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136 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd);
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50
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137
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332
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138 if (of.is_dir) {
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139
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140 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir");
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141
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142 r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
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143 if (r->headers_out.location == NULL) {
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144 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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145 }
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146
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152
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147 if (!clcf->alias && clcf->root_lengths == NULL) {
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106
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148 location = path.data + clcf->root.len;
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149
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150 } else {
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151 location = ngx_palloc(r->pool, r->uri.len + 1);
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152 if (location == NULL) {
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153 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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154 }
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155
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122
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156 last = ngx_copy(location, r->uri.data, r->uri.len);
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106
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157 }
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158
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159 *last = '/';
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160
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58
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161 /*
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162 * we do not need to set the r->headers_out.location->hash and
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163 * r->headers_out.location->key fields
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164 */
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165
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106
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166 r->headers_out.location->value.len = r->uri.len + 1;
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167 r->headers_out.location->value.data = location;
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50
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168
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169 return NGX_HTTP_MOVED_PERMANENTLY;
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170 }
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171
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172 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */
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173
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332
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174 if (!of.is_file) {
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175 ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
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176 "\"%s\" is not a regular file", path.data);
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177
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178 return NGX_HTTP_NOT_FOUND;
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179 }
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180
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181 #endif
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182
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378
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183 if (r->method & NGX_HTTP_POST) {
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184 return NGX_HTTP_NOT_ALLOWED;
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185 }
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186
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187 rc = ngx_http_discard_request_body(r);
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188
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189 if (rc != NGX_OK) {
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190 return rc;
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191 }
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192
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193 log->action = "sending response to client";
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194
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195 r->headers_out.status = NGX_HTTP_OK;
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332
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196 r->headers_out.content_length_n = of.size;
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197 r->headers_out.last_modified_time = of.mtime;
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198
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199 if (ngx_http_set_content_type(r) != NGX_OK) {
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200 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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201 }
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202
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332
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203 if (r != r->main && of.size == 0) {
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132
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204 return ngx_http_send_header(r);
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205 }
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206
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136
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207 r->allow_ranges = 1;
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208
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126
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209 /* we need to allocate all before the header would be sent */
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210
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211 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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212 if (b == NULL) {
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213 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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214 }
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215
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216 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
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217 if (b->file == NULL) {
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218 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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219 }
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220
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221 rc = ngx_http_send_header(r);
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222
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134
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223 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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224 return rc;
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225 }
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226
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227 b->file_pos = 0;
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332
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228 b->file_last = of.size;
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229
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126
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230 b->in_file = b->file_last ? 1: 0;
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146
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231 b->last_buf = (r == r->main) ? 1: 0;
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126
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232 b->last_in_chain = 1;
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233
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356
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234 b->file->fd = of.fd;
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235 b->file->name = path;
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236 b->file->log = log;
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237
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238 out.buf = b;
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239 out.next = NULL;
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240
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241 return ngx_http_output_filter(r, &out);
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242 }
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243
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244
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58
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245 static ngx_int_t
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230
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246 ngx_http_static_init(ngx_conf_t *cf)
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50
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247 {
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248 ngx_http_handler_pt *h;
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249 ngx_http_core_main_conf_t *cmcf;
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250
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230
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251 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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126
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252
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253 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
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254 if (h == NULL) {
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255 return NGX_ERROR;
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256 }
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257
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258 *h = ngx_http_static_handler;
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259
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260 return NGX_OK;
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261 }
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