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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 typedef struct {
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13 ngx_http_cache_hash_t *redirect_cache;
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14 } ngx_http_static_loc_conf_t;
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15
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16
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17 static ngx_int_t ngx_http_static_handler(ngx_http_request_t *r);
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18 static void *ngx_http_static_create_loc_conf(ngx_conf_t *cf);
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19 static char *ngx_http_static_merge_loc_conf(ngx_conf_t *cf,
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58
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20 void *parent, void *child);
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50
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21 static ngx_int_t ngx_http_static_init(ngx_cycle_t *cycle);
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22
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23
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24 static ngx_command_t ngx_http_static_commands[] = {
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25
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26 #if (NGX_HTTP_CACHE)
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27
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28 { ngx_string("redirect_cache"),
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29 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE3,
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30 ngx_http_set_cache_slot,
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31 NGX_HTTP_LOC_CONF_OFFSET,
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32 offsetof(ngx_http_static_loc_conf_t, redirect_cache),
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33 NULL },
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34
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35 #endif
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36
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37 ngx_null_command
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38 };
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39
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40
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41 ngx_http_module_t ngx_http_static_module_ctx = {
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58
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42 NULL, /* preconfiguration */
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43 NULL, /* postconfiguration */
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50
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44
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45 NULL, /* create main configuration */
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46 NULL, /* init main configuration */
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47
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48 NULL, /* create server configuration */
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49 NULL, /* merge server configuration */
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50
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51 ngx_http_static_create_loc_conf, /* create location configuration */
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52 ngx_http_static_merge_loc_conf /* merge location configuration */
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53 };
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54
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55
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56 ngx_module_t ngx_http_static_module = {
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58
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57 NGX_MODULE_V1,
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50
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58 &ngx_http_static_module_ctx, /* module context */
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59 ngx_http_static_commands, /* module directives */
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60 NGX_HTTP_MODULE, /* module type */
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90
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61 NULL, /* init master */
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62 ngx_http_static_init, /* init module */
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90
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63 NULL, /* init process */
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64 NULL, /* init thread */
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65 NULL, /* exit thread */
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66 NULL, /* exit process */
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67 NULL, /* exit master */
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68 NGX_MODULE_V1_PADDING
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50
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69 };
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70
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71
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58
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72 static ngx_int_t
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73 ngx_http_static_handler(ngx_http_request_t *r)
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50
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74 {
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75 u_char *last;
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76 ngx_fd_t fd;
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77 ngx_int_t rc;
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78 ngx_uint_t level;
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79 ngx_str_t name, location;
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80 ngx_err_t err;
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81 ngx_log_t *log;
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82 ngx_buf_t *b;
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83 ngx_chain_t out;
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84 ngx_file_info_t fi;
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58
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85 ngx_pool_cleanup_file_t *cln;
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86 ngx_http_core_loc_conf_t *clcf;
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87
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88 if (r->uri.data[r->uri.len - 1] == '/') {
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89 return NGX_DECLINED;
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90 }
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91
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92 /* TODO: Win32 */
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93 if (r->zero_in_uri) {
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94 return NGX_DECLINED;
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95 }
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96
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97 if (r->method != NGX_HTTP_GET && r->method != NGX_HTTP_HEAD) {
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98 return NGX_HTTP_NOT_ALLOWED;
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99 }
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100
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101 rc = ngx_http_discard_body(r);
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102
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103 if (rc != NGX_OK && rc != NGX_AGAIN) {
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104 return rc;
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105 }
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106
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107 log = r->connection->log;
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108
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109 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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110
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111 /*
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112 * make a file name, reserve 2 bytes for a trailing '/'
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113 * in a possible redirect and for the last '\0'
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114 */
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115
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58
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116 if (!clcf->alias) {
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117 name.data = ngx_palloc(r->pool, clcf->root.len + r->uri.len + 2);
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118 if (name.data == NULL) {
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119 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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120 }
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121
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122 location.data = ngx_cpymem(name.data, clcf->root.data, clcf->root.len);
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123 last = ngx_cpystrn(location.data, r->uri.data, r->uri.len + 1);
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124
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125 name.len = last - name.data;
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126 location.len = last - location.data + 1;
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127
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128 } else {
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129 name.data = ngx_palloc(r->pool, clcf->root.len + r->uri.len + 2
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130 - clcf->name.len);
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131 if (name.data == NULL) {
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132 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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133 }
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134
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135 last = ngx_cpymem(name.data, clcf->root.data, clcf->root.len);
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136 last = ngx_cpystrn(last, r->uri.data + clcf->name.len,
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137 r->uri.len + 1 - clcf->name.len);
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138
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139 name.len = last - name.data;
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140
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141 location.data = ngx_palloc(r->pool, r->uri.len + 2);
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142 if (location.data == NULL) {
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143 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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144 }
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145
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146 last = ngx_cpystrn(location.data, r->uri.data, r->uri.len + 1);
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147
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148 location.len = last - location.data + 1;
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149 }
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150
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151 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
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152 "http filename: \"%s\"", name.data);
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153
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154 /* open file */
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155
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156 #if (NGX_WIN9X)
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157
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158 if (ngx_win32_version < NGX_WIN_NT) {
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159
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160 /*
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161 * there is no way to open a file or a directory in Win9X with
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162 * one syscall because Win9X has no FILE_FLAG_BACKUP_SEMANTICS flag
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163 * so we need to check its type before the opening
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164 */
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165
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166 if (ngx_file_info(name.data, &fi) == NGX_FILE_ERROR) {
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167 err = ngx_errno;
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168 ngx_log_error(NGX_LOG_ERR, log, err,
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169 ngx_file_info_n " \"%s\" failed", name.data);
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170
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171 if (err == NGX_ENOENT || err == NGX_ENOTDIR) {
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172 return NGX_HTTP_NOT_FOUND;
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173
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174 } else if (err == NGX_EACCES) {
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175 return NGX_HTTP_FORBIDDEN;
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176
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177 } else {
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178 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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179 }
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180 }
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181
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182 if (ngx_is_dir(&fi)) {
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183 r->headers_out.location = ngx_http_add_header(&r->headers_out,
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184 ngx_http_headers_out);
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185 if (r->headers_out.location == NULL) {
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186 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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187 }
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188
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189 *last++ = '/';
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190 *last = '\0';
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191 r->headers_out.location->value.len = last - location;
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192 r->headers_out.location->value.data = location;
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193
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194 return NGX_HTTP_MOVED_PERMANENTLY;
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195 }
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196 }
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197
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198 #endif
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199
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200
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201 fd = ngx_open_file(name.data, NGX_FILE_RDONLY, NGX_FILE_OPEN);
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202
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203 if (fd == NGX_INVALID_FILE) {
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204 err = ngx_errno;
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205
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92
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206 if (err == NGX_ENOENT
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207 || err == NGX_ENOTDIR
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208 || err == NGX_ENAMETOOLONG)
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209 {
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210 level = NGX_LOG_ERR;
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211 rc = NGX_HTTP_NOT_FOUND;
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212
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213 } else if (err == NGX_EACCES) {
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214 level = NGX_LOG_ERR;
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215 rc = NGX_HTTP_FORBIDDEN;
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216
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217 } else {
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218 level = NGX_LOG_CRIT;
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219 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
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220 }
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221
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76
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222 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
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223 ngx_log_error(level, log, err,
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224 ngx_open_file_n " \"%s\" failed", name.data);
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225 }
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226
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227 return rc;
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228 }
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229
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230 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", fd);
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231
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232 if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
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233 ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
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234 ngx_fd_info_n " \"%s\" failed", name.data);
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235
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236 if (ngx_close_file(fd) == NGX_FILE_ERROR) {
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237 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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238 ngx_close_file_n " \"%s\" failed", name.data);
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239 }
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240
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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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244 if (ngx_is_dir(&fi)) {
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245
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246 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir");
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247
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248 if (ngx_close_file(fd) == NGX_FILE_ERROR) {
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249 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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250 ngx_close_file_n " \"%s\" failed", name.data);
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251 }
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252
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253 *last++ = '/';
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254 *last = '\0';
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255
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256 r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
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257 if (r->headers_out.location == NULL) {
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258 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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259 }
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260
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58
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261 /*
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262 * we do not need to set the r->headers_out.location->hash and
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263 * r->headers_out.location->key fields
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264 */
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265
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266 r->headers_out.location->value = location;
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267
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268 return NGX_HTTP_MOVED_PERMANENTLY;
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269 }
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270
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271 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */
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272
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273 if (!ngx_is_file(&fi)) {
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274 ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
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275 "\"%s\" is not a regular file", name.data);
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276
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277 if (ngx_close_file(fd) == NGX_FILE_ERROR) {
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278 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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279 ngx_close_file_n " \"%s\" failed", name.data);
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280 }
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281
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282 return NGX_HTTP_NOT_FOUND;
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283 }
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284
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285 #endif
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286
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287 log->action = "sending response to client";
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288
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289 cln = ngx_palloc(r->pool, sizeof(ngx_pool_cleanup_file_t));
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290 if (cln == NULL) {
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291 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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292 }
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293
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294 cln->fd = fd;
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295 cln->name = name.data;
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296 cln->log = r->pool->log;
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297
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298 if (ngx_pool_cleanup_add(r->pool, ngx_pool_cleanup_file, cln) == NULL) {
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299 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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300 }
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301
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302 r->headers_out.status = NGX_HTTP_OK;
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303 r->headers_out.content_length_n = ngx_file_size(&fi);
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304 r->headers_out.last_modified_time = ngx_file_mtime(&fi);
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305
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306 if (r->headers_out.content_length_n == 0) {
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307 r->header_only = 1;
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308 }
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309
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310 if (ngx_http_set_content_type(r) != NGX_OK) {
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311 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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312 }
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313
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314 #if (NGX_SUPPRESS_WARN)
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315 b = NULL;
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316 #endif
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317
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318 if (!r->header_only) {
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319 /* we need to allocate all before the header would be sent */
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320
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321 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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322 if (b == NULL) {
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323 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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324 }
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325
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326 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
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327 if (b->file == NULL) {
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328 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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329 }
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330
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331 r->filter_allow_ranges = 1;
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332 }
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333
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334 rc = ngx_http_send_header(r);
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335
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336 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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337 return rc;
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338 }
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339
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340 b->in_file = 1;
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341
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102
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342 if (r->main == r) {
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343 b->last_buf = 1;
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344 }
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345
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346 b->last_in_chain = 1;
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347
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348 b->file_pos = 0;
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349 b->file_last = ngx_file_size(&fi);
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350
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351 b->file->fd = fd;
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352 b->file->name = name;
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353 b->file->log = log;
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354
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355 out.buf = b;
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356 out.next = NULL;
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357
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358 return ngx_http_output_filter(r, &out);
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359 }
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360
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361
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58
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362 static void *
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363 ngx_http_static_create_loc_conf(ngx_conf_t *cf)
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50
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364 {
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365 ngx_http_static_loc_conf_t *conf;
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366
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367 conf = ngx_palloc(cf->pool, sizeof(ngx_http_static_loc_conf_t));
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368 if (conf == NULL) {
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369 return NGX_CONF_ERROR;
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370 }
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371
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372 conf->redirect_cache = NULL;
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373
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374 return conf;
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375 }
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376
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377
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58
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378 static char *
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379 ngx_http_static_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
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50
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380 {
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381 ngx_http_static_loc_conf_t *prev = parent;
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382 ngx_http_static_loc_conf_t *conf = child;
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383
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384 if (conf->redirect_cache == NULL) {
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385 conf->redirect_cache = prev->redirect_cache;
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386 }
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387
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388 return NGX_CONF_OK;
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389 }
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390
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391
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58
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392 static ngx_int_t
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393 ngx_http_static_init(ngx_cycle_t *cycle)
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50
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394 {
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395 ngx_http_handler_pt *h;
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396 ngx_http_core_main_conf_t *cmcf;
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397
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398 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
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399
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400 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
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401 if (h == NULL) {
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|
|
402 return NGX_ERROR;
|
|
|
403 }
|
|
|
404
|
|
|
405 *h = ngx_http_static_handler;
|
|
|
406
|
|
|
407 return NGX_OK;
|
|
|
408 }
|
