From: Bradley Nicholes Date: Mon, 23 May 2005 17:43:10 +0000 (+0000) Subject: authn_provider_alias adds the configuration block tag X-Git-Tag: 2.1.5~85 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=79a282df9ccc36feee6b9ffc8f8e70639799b100;p=apache authn_provider_alias adds the configuration block tag Authentication directives contained within this block can be referenced as a new authProvider using the AuthBasicProvider or AuthDigestProvider directives. These directives will be merged in to the per_dir configuration just before the base provider is called. git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@177985 13f79535-47bb-0310-9956-ffa450edef68 --- diff --git a/modules/aaa/mod_authn_alias.c b/modules/aaa/mod_authn_alias.c new file mode 100644 index 0000000000..83d067774f --- /dev/null +++ b/modules/aaa/mod_authn_alias.c @@ -0,0 +1,209 @@ +/* Copyright 2002-2005 The Apache Software Foundation or its licensors, as + * applicable. + * + * Licensed 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" +#define APR_WANT_STRFUNC /* for strcasecmp */ +#include "apr_want.h" + +#define CORE_PRIVATE +#include "ap_config.h" +#include "httpd.h" +#include "http_config.h" +#include "http_core.h" +#include "http_request.h" +#include "ap_provider.h" + +#include "mod_auth.h" + +typedef struct provider_alias_rec { + char *provider_name; + char *provider_alias; + ap_conf_vector_t *sec_auth; + const authn_provider *provider; +} provider_alias_rec; + +typedef struct authn_alias_srv_conf { + apr_hash_t *alias_rec; +} authn_alias_srv_conf; + +module AP_MODULE_DECLARE_DATA authn_alias_module; + +static authn_status authn_alias_check_password(request_rec *r, const char *user, + const char *password) +{ + /* Look up the provider alias in the alias list */ + /* Get the the dir_config and call ap_Merge_per_dir_configs() */ + /* Call the real provider->check_password() function */ + /* return the result of the above function call */ + + const char *provider_name = apr_table_get(r->notes, AUTHN_PROVIDER_NAME_NOTE); + authn_status ret = AUTH_USER_NOT_FOUND; + authn_alias_srv_conf *authcfg = + (authn_alias_srv_conf *)ap_get_module_config(r->server->module_config, + &authn_alias_module); + + if (provider_name) { + provider_alias_rec *prvdraliasrec = apr_hash_get(authcfg->alias_rec, + provider_name, APR_HASH_KEY_STRING); + ap_conf_vector_t *orig_dir_config = r->per_dir_config; + + /* If we found the alias provider in the list, then merge the directory + configurations and call the real provider */ + if (prvdraliasrec) { + r->per_dir_config = ap_merge_per_dir_configs(r->pool, orig_dir_config, + prvdraliasrec->sec_auth); + ret = prvdraliasrec->provider->check_password(r,user,password); + r->per_dir_config = orig_dir_config; + } + } + + return ret; +} + +static authn_status authn_alias_get_realm_hash(request_rec *r, const char *user, + const char *realm, char **rethash) +{ + /* Look up the provider alias in the alias list */ + /* Get the the dir_config and call ap_Merge_per_dir_configs() */ + /* Call the real provider->get_realm_hash() function */ + /* return the result of the above function call */ + + const char *provider_name = apr_table_get(r->notes, AUTHN_PROVIDER_NAME_NOTE); + authn_status ret = AUTH_USER_NOT_FOUND; + authn_alias_srv_conf *authcfg = + (authn_alias_srv_conf *)ap_get_module_config(r->server->module_config, + &authn_alias_module); + + if (provider_name) { + provider_alias_rec *prvdraliasrec = apr_hash_get(authcfg->alias_rec, + provider_name, APR_HASH_KEY_STRING); + ap_conf_vector_t *orig_dir_config = r->per_dir_config; + + /* If we found the alias provider in the list, then merge the directory + configurations and call the real provider */ + if (prvdraliasrec) { + r->per_dir_config = ap_merge_per_dir_configs(r->pool, orig_dir_config, + prvdraliasrec->sec_auth); + ret = prvdraliasrec->provider->get_realm_hash(r,user,realm,rethash); + r->per_dir_config = orig_dir_config; + } + } + + return ret; +} + +static void *create_authn_alias_svr_config(apr_pool_t *p, server_rec *s) +{ + + authn_alias_srv_conf *authcfg; + + authcfg = (authn_alias_srv_conf *) apr_pcalloc(p, sizeof(authn_alias_srv_conf)); + authcfg->alias_rec = apr_hash_make(p); + + return (void *) authcfg; +} + +static const authn_provider authn_alias_provider = +{ + &authn_alias_check_password, + &authn_alias_get_realm_hash, +}; + +static const char *authaliassection(cmd_parms *cmd, void *mconfig, const char *arg) +{ + int old_overrides = cmd->override; + const char *endp = ap_strrchr_c(arg, '>'); + const char *args; + char *provider_alias; + char *provider_name; + const char *errmsg; + ap_conf_vector_t *new_auth_config = ap_create_per_dir_config(cmd->pool); + authn_alias_srv_conf *authcfg = + (authn_alias_srv_conf *)ap_get_module_config(cmd->server->module_config, + &authn_alias_module); + + const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY); + if (err != NULL) { + return err; + } + + if (endp == NULL) { + return apr_pstrcat(cmd->pool, cmd->cmd->name, + "> directive missing closing '>'", NULL); + } + + args = apr_pstrndup(cmd->pool, arg, endp - arg); + + if (!args[0]) { + return apr_pstrcat(cmd->pool, cmd->cmd->name, + "> directive requires additional arguments", NULL); + } + + /* Pull the real provider name and the alias name from the block header */ + provider_name = ap_getword_conf(cmd->pool, &args); + provider_alias = ap_getword_conf(cmd->pool, &args); + + if (!provider_name[0] || !provider_alias[0]) { + return apr_pstrcat(cmd->pool, cmd->cmd->name, + "> directive requires additional arguments", NULL); + } + + /* walk the subsection configuration to get the per_dir config that we will + merge just before the real provider is called. */ + cmd->override = OR_ALL|ACCESS_CONF; + errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_auth_config); + + if (!errmsg) { + provider_alias_rec *prvdraliasrec = apr_pcalloc(cmd->pool, sizeof(provider_alias_rec)); + const authn_provider *provider = ap_lookup_provider(AUTHN_PROVIDER_GROUP, provider_name,"0"); + + /* Save off the new directory config along with the original provider name + and function pointer data */ + prvdraliasrec->sec_auth = new_auth_config; + prvdraliasrec->provider_name = provider_name; + prvdraliasrec->provider_alias = provider_alias; + prvdraliasrec->provider = provider; + apr_hash_set(authcfg->alias_rec, provider_alias, APR_HASH_KEY_STRING, prvdraliasrec); + + /* Register the fake provider so that we get called first */ + ap_register_provider(cmd->pool, AUTHN_PROVIDER_GROUP, provider_alias, "0", + &authn_alias_provider); + } + + cmd->override = old_overrides; + + return errmsg; +} + +static const command_rec authn_alias_cmds[] = +{ + AP_INIT_RAW_ARGS("