148 lines
4.0 KiB
C
148 lines
4.0 KiB
C
/* Icecast
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*
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* This program is distributed under the GNU General Public License, version 2.
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* A copy of this license is included with this source.
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*
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* Copyright 2014-2018, Philipp "ph3-der-loewe" Schafft <lion@lion.leolix.org>,
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*/
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/**
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* Client authentication functions
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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/* for strcmp() and strdup() */
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#include <string.h>
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#include "auth.h"
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#include "cfgfile.h"
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#include "client.h"
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#include "util.h"
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#include "logging.h"
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#define CATMODULE "auth_static"
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typedef struct auth_static {
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char *username;
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char *password;
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auth_alter_t action;
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char *arg;
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} auth_static_t;
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static auth_result static_auth(auth_client *auth_user)
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{
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client_t *client = auth_user->client;
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auth_t *auth = client->auth;
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auth_static_t *auth_info = auth->state;
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if (auth_info->username) {
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if (!client->username)
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return AUTH_NOMATCH;
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if (strcmp(auth_info->username, client->username) != 0)
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return AUTH_NOMATCH;
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}
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if (!client->password)
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return AUTH_NOMATCH;
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if (strcmp(auth_info->password, client->password) != 0)
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return AUTH_FAILED;
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if (auth_info->action != AUTH_ALTER_NOOP) {
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if (auth_alter_client(auth, auth_user, auth_info->action, auth_info->arg) != 0) {
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ICECAST_LOG_ERROR("Can not alter client.");
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}
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}
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return AUTH_OK;
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}
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static void clear_auth (auth_t *auth)
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{
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auth_static_t *auth_info = auth->state;
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if (!auth_info)
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return;
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free(auth_info->username);
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free(auth_info->password);
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free(auth_info->arg);
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free(auth_info);
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auth->state = NULL;
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}
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static auth_result static_userlist(auth_t *auth, xmlNodePtr srcnode)
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{
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auth_static_t *auth_info = auth->state;
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xmlNodePtr newnode;
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newnode = xmlNewChild(srcnode, NULL, XMLSTR("user"), NULL);
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xmlNewTextChild(newnode, NULL, XMLSTR("username"), XMLSTR(auth_info->username));
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return AUTH_OK;
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}
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int auth_get_static_auth (auth_t *authenticator, config_options_t *options)
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{
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auth_static_t *auth_info;
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int need_user;
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if (strcmp(authenticator->type, AUTH_TYPE_STATIC) == 0) {
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need_user = 1;
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} else if (strcmp(authenticator->type, AUTH_TYPE_LEGACY_PASSWORD) == 0) {
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need_user = 0;
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} else {
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ICECAST_LOG_ERROR("Unknown type.");
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return -1;
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}
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auth_info = calloc(1, sizeof(auth_static_t));
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if (!auth_info)
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return -1;
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authenticator->authenticate_client = static_auth;
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authenticator->listuser = static_userlist;
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authenticator->free = clear_auth;
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authenticator->state = auth_info;
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authenticator->immediate = 1;
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while (options) {
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if (strcmp(options->name, "username") == 0) {
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if (auth_info->username)
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free(auth_info->username);
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auth_info->username = strdup(options->value);
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} else if (strcmp(options->name, "password") == 0) {
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if (auth_info->password)
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free(auth_info->password);
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auth_info->password = strdup(options->value);
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} else if (strcmp(options->name, "action") == 0) {
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auth_info->action = auth_str2alter(options->value);
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if (auth_info->action == AUTH_ALTER_NOOP) {
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ICECAST_LOG_ERROR("Invalid action given.");
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clear_auth(authenticator);
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return -1;
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}
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} else if (strcmp(options->name, "argument") == 0) {
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util_replace_string(&(auth_info->arg), options->value);
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} else {
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ICECAST_LOG_ERROR("Unknown option: %s", options->name);
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}
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options = options->next;
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}
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if (need_user && !auth_info->username) {
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ICECAST_LOG_ERROR("Username required, but not given.");
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clear_auth(authenticator);
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return -1;
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} else if (!auth_info->password) {
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ICECAST_LOG_ERROR("Password required, but not given.");
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clear_auth(authenticator);
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return -1;
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}
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return 0;
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}
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