├── LICENSE ├── README.md ├── config └── ngx_form_auth.c /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Nginx module for POST authentication and authorization 2 | ====================================================== 3 | 4 | This module provides authentication and authorization with credentials submitted 5 | via POST request. Inspired by [mod_intercept_form_submit](http://www.adelton.com/apache/mod_intercept_form_submit/) module for Apache, 6 | you can use login form for authenticating users for your application. 7 | 8 | Tried with [freeIPA](http://www.freeipa.org/page/Main_Page) and basic Perl FCGI application. 9 | 10 | 11 | Installation 12 | ------------ 13 | 14 | 1. Download [the nginx source](http://www.nginx.org/en/download.html) and extract it 15 | 1. Clone this module repository into the directory 16 | 1. Make sure you have installed development libraries for PAM (eg `pam-devel`) 17 | 1. Follow the [nginx install documentation](http://nginx.org/en/docs/install.html) and add this module. If you have more modules for authentication, add this as the last one 18 | 19 | ./configure --add-module=ngx_form_auth 20 | 21 | 22 | Configuration 23 | ------------- 24 | 25 | * `form_auth` on | off: for enabling / disabling the module 26 | * `form_auth_pam_service`: the name of the PAM service that should be used, if omitted, the default value `nginx` is used 27 | * `form_auth_login`: the name of the login field in the request, if omitted, the default value `login` is used 28 | * `form_auth_password`: the name of the password field in the request, if omitted, the default value `password` is used 29 | * `form_auth_remote_user` on | off: for setting the $remote_user variable, if omitted, the default value `off` is used 30 | 31 | 32 | Note that setting the $remote_user variable is possible only using Basic 33 | authentication, therefore after the user is authorized we set the Authorization 34 | header to set the variable correctly. If your application uses the REMOTE_USER 35 | header, don't forget to pass the header to it. 36 | 37 | 38 | Example configuration 39 | --------------------- 40 | 41 | Example configuration for FCGI application binded to `/var/run/nginx.sock` 42 | socket, using default values for login and password fields. The application 43 | uses REMOTE_USER to check whether any user is successfully logged in. 44 | 45 | location ~ \.cgi { 46 | fastcgi_pass unix:/var/run/nginx.sock; 47 | include fastcgi_params; 48 | 49 | location ~ \.cgi/login { 50 | form_auth on; 51 | form_auth_pam_service "service"; 52 | form_auth_remote_user on; 53 | 54 | fastcgi_param REMOTE_USER $remote_user if_not_empty; 55 | fastcgi_pass unix:/var/run/nginx.sock; 56 | include fastcgi_params; 57 | } 58 | } 59 | 60 | 61 | Debugging information and troubleshooting 62 | ----------------------------------------- 63 | 64 | To enable debugging output, compile with the `--with-debug` option and set the 65 | `error_log` directive in you configuratin to `debug` level. 66 | 67 | If you have unexpected issues with authentication, make sure your PAM setup is 68 | correct (you have the configuration file for the used service in your 69 | `/etc/pam.d/` containing correct settings). Example setup for using SSSD for 70 | authentication and authorization is 71 | 72 | auth required pam_sss.so 73 | account required pam_sss.so 74 | 75 | -------------------------------------------------------------------------------- /config: -------------------------------------------------------------------------------- 1 | ngx_addon_name=ngx_http_form_auth_module 2 | HTTP_MODULES="$HTTP_MODULES ngx_http_form_auth_module" 3 | NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/ngx_form_auth.c" 4 | CORE_LIBS="$CORE_LIBS -lpam" 5 | -------------------------------------------------------------------------------- /ngx_form_auth.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | #include 6 | 7 | #define NGX_PAM_SERVICE_NAME "nginx" 8 | #define NGX_LOGIN_FIELD "login" 9 | #define NGX_PASSWORD_FIELD "password" 10 | 11 | #define PAM_STEP_AUTH 1 12 | #define PAM_STEP_ACCOUNT 2 13 | #define PAM_STEP_ALL 3 14 | 15 | typedef struct { 16 | unsigned done:1; 17 | unsigned wait_for_more_body:1; 18 | } ngx_http_form_auth_ctx_t; 19 | 20 | typedef struct { 21 | ngx_flag_t enabled; 22 | ngx_str_t pam_service; 23 | ngx_str_t login_field; 24 | ngx_str_t password_field; 25 | ngx_flag_t set_remote_user; 26 | } ngx_http_form_auth_loc_conf_t; 27 | 28 | static void * ngx_http_form_auth_create_loc_conf(ngx_conf_t *cf) 29 | { 30 | ngx_http_form_auth_loc_conf_t *conf; 31 | conf = ngx_palloc(cf->pool, sizeof(ngx_http_form_auth_loc_conf_t)); 32 | if(conf == NULL) { 33 | return NGX_CONF_ERROR; 34 | } 35 | 36 | conf->enabled = NGX_CONF_UNSET; 37 | conf->set_remote_user = NGX_CONF_UNSET; 38 | return conf; 39 | } 40 | 41 | static char * ngx_http_form_auth_merge_loc_conf(ngx_conf_t *cf, 42 | void *parent, void *child) 43 | { 44 | ngx_http_form_auth_loc_conf_t *prev = parent; 45 | ngx_http_form_auth_loc_conf_t *conf = child; 46 | 47 | ngx_conf_merge_off_value(conf->enabled, prev->enabled, 0); 48 | ngx_conf_merge_off_value(conf->set_remote_user, prev->set_remote_user, 0); 49 | ngx_conf_merge_str_value(conf->pam_service, 50 | prev->pam_service, NGX_PAM_SERVICE_NAME); 51 | ngx_conf_merge_str_value(conf->login_field, prev->login_field, 52 | NGX_LOGIN_FIELD); 53 | ngx_conf_merge_str_value(conf->password_field, prev->password_field, 54 | NGX_PASSWORD_FIELD); 55 | 56 | return NGX_CONF_OK; 57 | } 58 | 59 | static ngx_command_t ngx_http_form_auth_commands[] = { 60 | { ngx_string("form_auth"), 61 | NGX_HTTP_LOC_CONF | NGX_CONF_TAKE1, 62 | ngx_conf_set_flag_slot, 63 | NGX_HTTP_LOC_CONF_OFFSET, 64 | offsetof(ngx_http_form_auth_loc_conf_t, enabled), 65 | NULL }, 66 | { ngx_string("form_auth_pam_service"), 67 | NGX_HTTP_LOC_CONF | NGX_CONF_TAKE1, 68 | ngx_conf_set_str_slot, 69 | NGX_HTTP_LOC_CONF_OFFSET, 70 | offsetof(ngx_http_form_auth_loc_conf_t, pam_service), 71 | NULL }, 72 | { ngx_string("form_auth_login"), 73 | NGX_HTTP_LOC_CONF | NGX_CONF_TAKE1, 74 | ngx_conf_set_str_slot, 75 | NGX_HTTP_LOC_CONF_OFFSET, 76 | offsetof(ngx_http_form_auth_loc_conf_t, login_field), 77 | NULL }, 78 | { ngx_string("form_auth_password"), 79 | NGX_HTTP_LOC_CONF | NGX_CONF_TAKE1, 80 | ngx_conf_set_str_slot, 81 | NGX_HTTP_LOC_CONF_OFFSET, 82 | offsetof(ngx_http_form_auth_loc_conf_t, password_field), 83 | NULL }, 84 | { ngx_string("form_auth_remote_user"), 85 | NGX_HTTP_LOC_CONF | NGX_CONF_TAKE1, 86 | ngx_conf_set_flag_slot, 87 | NGX_HTTP_LOC_CONF_OFFSET, 88 | offsetof(ngx_http_form_auth_loc_conf_t, set_remote_user), 89 | NULL }, 90 | 91 | ngx_null_command 92 | }; 93 | 94 | static ngx_int_t ngx_http_form_auth_init(ngx_conf_t *cf); 95 | 96 | static ngx_http_module_t ngx_http_form_auth_module_ctx = { 97 | NULL, /* preconfiguration */ 98 | ngx_http_form_auth_init, /* postconfiguration */ 99 | NULL, /* create main configuration */ 100 | NULL, /* init main configuration */ 101 | NULL, /* create server configuration */ 102 | NULL, /* merge server configuration */ 103 | ngx_http_form_auth_create_loc_conf, /* create location configuration */ 104 | ngx_http_form_auth_merge_loc_conf /* merge location configuration */ 105 | }; 106 | 107 | ngx_module_t ngx_http_form_auth_module = { 108 | NGX_MODULE_V1, 109 | &ngx_http_form_auth_module_ctx, /* module context */ 110 | ngx_http_form_auth_commands, /* module directives */ 111 | NGX_HTTP_MODULE, /* module type */ 112 | NULL, /* init master */ 113 | NULL, /* init module */ 114 | NULL, /* init process */ 115 | NULL, /* init thread */ 116 | NULL, /* exit thread */ 117 | NULL, /* exit precess */ 118 | NULL, /* exit master */ 119 | NGX_MODULE_V1_PADDING 120 | }; 121 | 122 | static void post_handler(ngx_http_request_t *r) 123 | { 124 | ngx_http_form_auth_ctx_t *ctx = 125 | ngx_http_get_module_ctx(r, ngx_http_form_auth_module); 126 | ctx->done = 1; 127 | r->main->count--; 128 | 129 | if(ctx->wait_for_more_body) { 130 | ctx->wait_for_more_body = 0; 131 | ngx_http_core_run_phases(r); 132 | } 133 | } 134 | 135 | void set_str_from_buffer(ngx_http_request_t *r, ngx_str_t *str_to_set, 136 | ngx_str_t *field, u_char *buffer, u_char *last) 137 | { 138 | u_char *pos; 139 | for(pos = buffer; pos < last; pos++) { 140 | pos = ngx_strlcasestrn(pos, last - 1, field->data, field->len - 1); 141 | if(pos == NULL) { 142 | return; 143 | } 144 | 145 | if((pos == buffer || *(pos - 1) == '&') && *(pos + field->len) == '=') { 146 | u_char *value = pos + field->len + 1; 147 | pos = ngx_strlchr(value, last, '&'); 148 | if(pos == NULL) { 149 | pos = last; 150 | } 151 | str_to_set->len = pos - value; 152 | str_to_set->data = value; 153 | return; 154 | } 155 | } 156 | } 157 | 158 | ngx_int_t get_credentials(ngx_http_request_t *r, ngx_str_t *user_login_name, 159 | ngx_str_t *user_password, ngx_str_t *login_field, ngx_str_t *password_field) 160 | { 161 | u_char *last, *buffer; 162 | 163 | if(!r->request_body || !r->request_body->bufs) { 164 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, 165 | "ngx_form_auth: Empty buffers, no credentials provided"); 166 | return NGX_DECLINED; 167 | } 168 | 169 | if(r->request_body->bufs->next) { 170 | size_t len = 0; 171 | ngx_chain_t *chain; 172 | for(chain = r->request_body->bufs; chain; chain = chain->next) { 173 | if(!chain->buf->in_file) { 174 | len += chain->buf->last - chain->buf->pos; 175 | } 176 | } 177 | if(!len) { 178 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, 179 | "ngx_form_auth: Empty buffers, no credentials provided"); 180 | return NGX_DECLINED; 181 | } 182 | 183 | buffer = ngx_palloc(r->pool, len); 184 | if(buffer == NULL) { 185 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, 186 | "ngx_form_auth: ngx_palloc failed."); 187 | return NGX_ERROR; 188 | } 189 | last = buffer + len; 190 | 191 | for(chain = r->request_body->bufs; chain; chain = chain->next) { 192 | buffer = ngx_copy(buffer, chain->buf->pos, 193 | chain->buf->last - chain->buf->pos); 194 | } 195 | } else { 196 | if(!ngx_buf_size(r->request_body->bufs->buf)) { 197 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, 198 | "ngx_form_auth: Empty buffer, no credentials provided"); 199 | return NGX_DECLINED; 200 | } 201 | buffer = r->request_body->bufs->buf->pos; 202 | last = r->request_body->bufs->buf->last; 203 | } 204 | 205 | set_str_from_buffer(r, user_login_name, login_field, buffer, last); 206 | set_str_from_buffer(r, user_password, password_field, buffer, last); 207 | 208 | user_login_name->data[user_login_name->len] = '\0'; 209 | user_password->data[user_password->len] = '\0'; 210 | 211 | if(!user_login_name->len || !user_password->len) { 212 | return NGX_DECLINED; 213 | } 214 | 215 | return NGX_OK; 216 | } 217 | 218 | static int pam_conversation(int num, const struct pam_message **message, 219 | struct pam_response **response, void *data) 220 | { 221 | if(!message || !response || !data) { 222 | return PAM_CONV_ERR; 223 | } 224 | 225 | struct pam_response *tmp_response = 226 | malloc(num * sizeof(struct pam_response)); 227 | if(!tmp_response) { 228 | return PAM_CONV_ERR; 229 | } 230 | 231 | int i; 232 | for(i = 0; i < num; i++) { 233 | tmp_response[i].resp = 0; 234 | tmp_response[i].resp_retcode = 0; 235 | if(message[i]->msg_style == PAM_PROMPT_ECHO_OFF) { 236 | if(i == 0) { 237 | tmp_response[i].resp = strdup(data); 238 | } else { 239 | tmp_response[i].resp = NULL; 240 | } 241 | } else { 242 | free(tmp_response); 243 | return PAM_CONV_ERR; 244 | } 245 | } 246 | *response = tmp_response; 247 | return PAM_SUCCESS; 248 | } 249 | 250 | static ngx_int_t authenticate_and_authorize(ngx_http_request_t *r, 251 | ngx_int_t steps, ngx_http_form_auth_loc_conf_t *loc_conf, 252 | const char *user, const char *password) 253 | { 254 | pam_handle_t *handle = NULL; 255 | struct pam_conv conversation = 256 | { &pam_conversation, (void *)password }; 257 | int rc = pam_start((const char *)loc_conf->pam_service.data, 258 | user, &conversation, &handle); 259 | 260 | if(rc == PAM_SUCCESS) { 261 | if(steps & PAM_STEP_AUTH) { 262 | rc = pam_authenticate(handle, PAM_DISALLOW_NULL_AUTHTOK); 263 | if(rc != PAM_SUCCESS) { 264 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, 265 | "ngx_form_auth: Authentication failed for user %s", user); 266 | return NGX_HTTP_UNAUTHORIZED; 267 | } 268 | r->access_code = NGX_OK; 269 | } 270 | 271 | if((rc == PAM_SUCCESS) && (steps & PAM_STEP_ACCOUNT)) { 272 | rc = pam_acct_mgmt(handle, PAM_DISALLOW_NULL_AUTHTOK); 273 | if(rc != PAM_SUCCESS) { 274 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, 275 | "ngx_form_auth: Authorization failed for user %s", user); 276 | return NGX_HTTP_FORBIDDEN; 277 | } 278 | } 279 | 280 | pam_end(handle, rc); 281 | if(rc == PAM_SUCCESS) { 282 | return NGX_OK; 283 | } 284 | return NGX_HTTP_FORBIDDEN; 285 | } else { 286 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, 287 | "ngx_form_auth: Unable to start PAM service: %s", 288 | pam_strerror(handle, rc)); 289 | pam_end(handle, rc); 290 | return NGX_ERROR; 291 | } 292 | } 293 | 294 | // remote_user should only be set with Basic auth 295 | void set_remote_user(ngx_http_request_t *r) 296 | { 297 | const char *basic_pass = "ngx_form_auth_password"; 298 | ngx_str_t user_pass, base64_user_pass, header; 299 | 300 | user_pass.len = r->headers_in.user.len + ngx_strlen(basic_pass) + 2; 301 | user_pass.data = ngx_pnalloc(r->pool, user_pass.len); 302 | if(user_pass.data == NULL) { 303 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, 304 | "ngx_form_auth: Unable to set remote_user variable; not encoded."); 305 | return; 306 | } 307 | ngx_snprintf(user_pass.data, user_pass.len, "%s:%s", 308 | r->headers_in.user.data, basic_pass); 309 | 310 | base64_user_pass.len = ngx_base64_encoded_length(user_pass.len); 311 | base64_user_pass.data = ngx_pnalloc(r->pool, base64_user_pass.len); 312 | if(base64_user_pass.data == NULL) { 313 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, 314 | "ngx_form_auth: Unable to set remote_user variable; encoded."); 315 | return; 316 | } 317 | ngx_encode_base64(&base64_user_pass, &user_pass); 318 | 319 | header.len = sizeof("Basic ") + base64_user_pass.len - 1; 320 | header.data = ngx_pnalloc(r->pool, header.len); 321 | if(header.data == NULL) { 322 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, 323 | "ngx_form_auth: Unable to set remote_user variable; header unset."); 324 | return; 325 | } 326 | ngx_snprintf(header.data, header.len, "Basic %V", &base64_user_pass); 327 | 328 | if(r->headers_in.authorization == NULL) { 329 | r->headers_in.authorization = 330 | ngx_pnalloc(r->pool, sizeof(ngx_table_elt_t)); 331 | if(r->headers_in.authorization == NULL) { 332 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, 333 | "ngx_form_auth: Not enough memory."); 334 | return; 335 | } 336 | 337 | r->headers_in.authorization->hash = 1; 338 | r->headers_in.authorization->key.len = sizeof("Basic") - 1; 339 | r->headers_in.authorization->key.data = (u_char *)"Basic"; 340 | } 341 | r->headers_in.authorization->value.len = header.len; 342 | r->headers_in.authorization->value.data = header.data; 343 | } 344 | 345 | static ngx_int_t ngx_http_form_auth_handler(ngx_http_request_t *r) 346 | { 347 | ngx_http_form_auth_ctx_t *ctx = 348 | ngx_http_get_module_ctx(r, ngx_http_form_auth_module); 349 | if(ctx) { 350 | if(ctx->done) { 351 | return NGX_DECLINED; 352 | } 353 | return NGX_DONE; 354 | } 355 | 356 | ngx_http_form_auth_loc_conf_t *loc_conf = 357 | ngx_http_get_module_loc_conf(r, ngx_http_form_auth_module); 358 | if(!loc_conf->enabled) { 359 | return NGX_DECLINED; 360 | } 361 | 362 | if(r->method != NGX_HTTP_POST) { 363 | return NGX_DECLINED; 364 | } 365 | 366 | ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, 367 | "ngx_form_auth: PAM service name set to %s", 368 | loc_conf->pam_service.data); 369 | ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, 370 | "ngx_form_auth: Login field set to %s", 371 | loc_conf->login_field.data); 372 | ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, 373 | "ngx_form_auth: Passowrd field set to %s", 374 | loc_conf->password_field.data); 375 | if(!loc_conf->set_remote_user) { 376 | ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, 377 | "ngx_form_auth: Remote user variable setting is disabled"); 378 | } else { 379 | ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, 380 | "ngx_form_auth: Remote user variable setting is enabled"); 381 | } 382 | 383 | int steps = 0; 384 | ngx_int_t rc = 0; 385 | 386 | if(r->headers_in.user.len) { 387 | ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, 388 | "ngx_form_auth: User %s already logged in", 389 | r->headers_in.user.data); 390 | steps = PAM_STEP_ACCOUNT; 391 | } 392 | 393 | if(!steps) { 394 | ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_form_auth_ctx_t)); 395 | if(ctx == NULL) { 396 | return NGX_ERROR; 397 | } 398 | ngx_http_set_ctx(r, ctx, ngx_http_form_auth_module); 399 | 400 | rc = ngx_http_read_client_request_body(r, post_handler); 401 | if(rc == NGX_AGAIN) { 402 | ctx->wait_for_more_body = 1; 403 | return NGX_DONE; 404 | } 405 | 406 | ngx_str_t user_login_name; 407 | ngx_str_t user_password; 408 | ngx_str_set(&user_login_name, ""); 409 | ngx_str_set(&user_password, ""); 410 | 411 | rc = get_credentials(r, &user_login_name, &user_password, 412 | &loc_conf->login_field, &loc_conf->password_field); 413 | if(rc != NGX_OK) { 414 | return NGX_HTTP_UNAUTHORIZED; 415 | } 416 | 417 | ngx_str_set(&r->headers_in.user, user_login_name.data); 418 | ngx_str_set(&r->headers_in.passwd, user_password.data); 419 | 420 | steps = PAM_STEP_ALL; 421 | } 422 | 423 | rc = authenticate_and_authorize(r, steps, loc_conf, 424 | (const char *)r->headers_in.user.data, 425 | (const char *)r->headers_in.passwd.data); 426 | 427 | if(rc != NGX_OK) { 428 | ngx_str_set(&r->headers_in.user, ""); 429 | ngx_str_set(&r->headers_in.passwd, ""); 430 | } else { 431 | if(loc_conf->set_remote_user) { 432 | set_remote_user(r); 433 | } 434 | } 435 | 436 | return rc; 437 | } 438 | 439 | static ngx_int_t ngx_http_form_auth_init(ngx_conf_t *conf) 440 | { 441 | ngx_http_handler_pt *handler; 442 | ngx_http_core_main_conf_t *main_conf; 443 | 444 | main_conf = ngx_http_conf_get_module_main_conf(conf, ngx_http_core_module); 445 | handler = 446 | ngx_array_push(&main_conf->phases[NGX_HTTP_ACCESS_PHASE].handlers); 447 | if(handler == NULL) { 448 | return NGX_ERROR; 449 | } 450 | *handler = ngx_http_form_auth_handler; 451 | return NGX_OK; 452 | } 453 | --------------------------------------------------------------------------------