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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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106
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52 ngx_fd_t fd;
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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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61
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194
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62 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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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 /* TODO: Win32 */
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71 if (r->zero_in_uri) {
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72 return NGX_DECLINED;
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73 }
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74
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326
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75 rc = ngx_http_discard_request_body(r);
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50
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76
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326
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77 if (rc != NGX_OK) {
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78 return rc;
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79 }
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80
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81 log = r->connection->log;
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82
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83 /*
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106
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84 * ngx_http_map_uri_to_path() allocates memory for terminating '\0'
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85 * so we do not need to reserve memory for '/' for possible redirect
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86 */
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87
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248
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88 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
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106
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89 if (last == NULL) {
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90 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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50
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91 }
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92
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332
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93 path.len = last - path.data;
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94
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95 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
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106
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96 "http filename: \"%s\"", path.data);
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97
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332
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98 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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112
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99
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332
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100 of.test_dir = 0;
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101 of.retest = clcf->open_file_cache_retest;
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102 of.errors = clcf->open_file_cache_errors;
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103 of.events = clcf->open_file_cache_events;
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104
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105 rc = ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool);
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50
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106
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332
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107 if (rc == NGX_ERROR) {
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108
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109 switch (of.err) {
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50
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110
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332
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111 case 0:
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112 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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113
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114 case NGX_ENOENT:
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115 case NGX_ENOTDIR:
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116 case NGX_ENAMETOOLONG:
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117
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118 level = NGX_LOG_ERR;
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119 rc = NGX_HTTP_NOT_FOUND;
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332
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120 break;
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121
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332
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122 case NGX_EACCES:
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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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106
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137 ngx_open_file_n " \"%s\" 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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332
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143 fd = of.fd;
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144
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145 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", 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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151 r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
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152 if (r->headers_out.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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152
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156 if (!clcf->alias && clcf->root_lengths == NULL) {
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106
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157 location = path.data + clcf->root.len;
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158
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159 } else {
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160 location = ngx_palloc(r->pool, r->uri.len + 1);
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161 if (location == NULL) {
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162 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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163 }
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164
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122
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165 last = ngx_copy(location, r->uri.data, r->uri.len);
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106
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166 }
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167
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168 *last = '/';
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169
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58
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170 /*
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171 * we do not need to set the r->headers_out.location->hash and
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172 * r->headers_out.location->key fields
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173 */
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50
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174
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175 r->headers_out.location->value.len = r->uri.len + 1;
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176 r->headers_out.location->value.data = location;
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177
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178 return NGX_HTTP_MOVED_PERMANENTLY;
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179 }
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180
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181 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */
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182
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332
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183 if (!of.is_file) {
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184 ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
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185 "\"%s\" is not a regular file", path.data);
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186
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187 return NGX_HTTP_NOT_FOUND;
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188 }
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189
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190 #endif
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191
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192 log->action = "sending response to client";
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193
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194 r->headers_out.status = NGX_HTTP_OK;
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332
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195 r->headers_out.content_length_n = of.size;
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196 r->headers_out.last_modified_time = of.mtime;
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197
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198 if (ngx_http_set_content_type(r) != NGX_OK) {
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199 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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200 }
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201
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332
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202 if (r != r->main && of.size == 0) {
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132
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203 return ngx_http_send_header(r);
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204 }
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205
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136
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206 r->allow_ranges = 1;
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207
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126
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208 /* we need to allocate all before the header would be sent */
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209
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210 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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211 if (b == NULL) {
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212 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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213 }
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214
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215 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
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216 if (b->file == NULL) {
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217 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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218 }
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219
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220 rc = ngx_http_send_header(r);
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221
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134
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222 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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223 return rc;
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224 }
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225
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226 b->file_pos = 0;
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332
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227 b->file_last = of.size;
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228
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126
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229 b->in_file = b->file_last ? 1: 0;
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146
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230 b->last_buf = (r == r->main) ? 1: 0;
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126
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231 b->last_in_chain = 1;
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232
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233 b->file->fd = fd;
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234 b->file->name = path;
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235 b->file->log = log;
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236
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237 out.buf = b;
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238 out.next = NULL;
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239
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240 return ngx_http_output_filter(r, &out);
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241 }
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242
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243
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58
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244 static ngx_int_t
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230
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245 ngx_http_static_init(ngx_conf_t *cf)
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50
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246 {
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247 ngx_http_handler_pt *h;
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248 ngx_http_core_main_conf_t *cmcf;
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249
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230
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250 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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126
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251
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252 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
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253 if (h == NULL) {
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254 return NGX_ERROR;
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255 }
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256
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257 *h = ngx_http_static_handler;
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258
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259 return NGX_OK;
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260 }
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