/* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "apr_strings.h" #include "apr_md5.h" /* for apr_password_validate */ #include "ap_config.h" #include "ap_provider.h" #include "httpd.h" #include "http_config.h" #include "http_core.h" #include "http_log.h" #include "http_protocol.h" #include "http_request.h" #include "mod_auth.h" typedef struct { char *pwfile; } authn_file_config_rec; static void *create_authn_file_dir_config(apr_pool_t *p, char *d) { authn_file_config_rec *conf = apr_palloc(p, sizeof(*conf)); conf->pwfile = NULL; /* just to illustrate the default really */ return conf; } static const char *set_authn_file_slot(cmd_parms *cmd, void *offset, const char *f, const char *t) { if (t && strcmp(t, "standard")) { return apr_pstrcat(cmd->pool, "Invalid auth file type: ", t, NULL); } return ap_set_file_slot(cmd, offset, f); } static const command_rec authn_file_cmds[] = { AP_INIT_TAKE12("AuthUserFile", set_authn_file_slot, (void *)APR_OFFSETOF(authn_file_config_rec, pwfile), OR_AUTHCFG, "text file containing user IDs and passwords"), {NULL} }; module AP_MODULE_DECLARE_DATA authn_file_module; static authn_status check_password(request_rec *r, const char *user, const char *password) { authn_file_config_rec *conf = ap_get_module_config(r->per_dir_config, &authn_file_module); ap_configfile_t *f; char l[MAX_STRING_LEN]; apr_status_t status; char *file_password = NULL; status = ap_pcfg_openfile(&f, r->pool, conf->pwfile); if (status != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, "Could not open password file: %s", conf->pwfile); return AUTH_GENERAL_ERROR; } while (!(ap_cfg_getline(l, MAX_STRING_LEN, f))) { const char *rpw, *w; /* Skip # or blank lines. */ if ((l[0] == '#') || (!l[0])) { continue; } rpw = l; w = ap_getword(r->pool, &rpw, ':'); if (!strcmp(user, w)) { file_password = ap_getword(r->pool, &rpw, ':'); break; } } ap_cfg_closefile(f); if (!file_password) { return AUTH_USER_NOT_FOUND; } status = apr_password_validate(password, file_password); if (status != APR_SUCCESS) { return AUTH_DENIED; } return AUTH_GRANTED; } static authn_status get_realm_hash(request_rec *r, const char *user, const char *realm, char **rethash) { authn_file_config_rec *conf = ap_get_module_config(r->per_dir_config, &authn_file_module); ap_configfile_t *f; char l[MAX_STRING_LEN]; apr_status_t status; char *file_hash = NULL; status = ap_pcfg_openfile(&f, r->pool, conf->pwfile); if (status != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, "Could not open password file: %s", conf->pwfile); return AUTH_GENERAL_ERROR; } while (!(ap_cfg_getline(l, MAX_STRING_LEN, f))) { const char *rpw, *w, *x; /* Skip # or blank lines. */ if ((l[0] == '#') || (!l[0])) { continue; } rpw = l; w = ap_getword(r->pool, &rpw, ':'); x = ap_getword(r->pool, &rpw, ':'); if (x && w && !strcmp(user, w) && !strcmp(realm, x)) { /* Remember that this is a md5 hash of user:realm:password. */ file_hash = ap_getword(r->pool, &rpw, ':'); break; } } ap_cfg_closefile(f); if (!file_hash) { return AUTH_USER_NOT_FOUND; } *rethash = file_hash; return AUTH_USER_FOUND; } static const authn_provider authn_file_provider = { &check_password, &get_realm_hash, }; static void register_hooks(apr_pool_t *p) { ap_register_provider(p, AUTHN_PROVIDER_GROUP, "file", "0", &authn_file_provider); } module AP_MODULE_DECLARE_DATA authn_file_module = { STANDARD20_MODULE_STUFF, create_authn_file_dir_config, /* dir config creater */ NULL, /* dir merger --- default is to override */ NULL, /* server config */ NULL, /* merge server config */ authn_file_cmds, /* command apr_table_t */ register_hooks /* register hooks */ };
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