129 lines
2.9 KiB
C
129 lines
2.9 KiB
C
/*
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* Copyright (C) 2007 Martin Willi
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* HSR Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "storage.h"
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#include <library.h>
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#include <crypto/hashers/hasher.h>
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typedef struct private_storage_t private_storage_t;
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/**
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* private data of storage
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*/
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struct private_storage_t {
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/**
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* public functions
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*/
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storage_t public;
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/**
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* database connection
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*/
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database_t *db;
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};
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METHOD(storage_t, login, int,
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private_storage_t *this, char *username, char *password)
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{
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hasher_t *hasher;
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chunk_t hash, data, hex_str;
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size_t username_len, password_len;
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int uid = 0;
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enumerator_t *enumerator;
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/* hash = SHA1( username | password ) */
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hasher = lib->crypto->create_hasher(lib->crypto, HASH_SHA1);
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if (hasher == NULL)
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{
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return 0;
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}
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hash = chunk_alloca(hasher->get_hash_size(hasher));
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username_len = strlen(username);
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password_len = strlen(password);
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data = chunk_alloca(username_len + password_len);
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memcpy(data.ptr, username, username_len);
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memcpy(data.ptr + username_len, password, password_len);
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if (!hasher->get_hash(hasher, data, hash.ptr))
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{
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hasher->destroy(hasher);
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return 0;
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}
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hasher->destroy(hasher);
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hex_str = chunk_to_hex(hash, NULL, FALSE);
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enumerator = this->db->query(this->db,
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"SELECT oid FROM users WHERE username = ? AND password = ?;",
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DB_TEXT, username, DB_TEXT, hex_str.ptr,
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DB_INT);
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if (enumerator)
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{
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enumerator->enumerate(enumerator, &uid);
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enumerator->destroy(enumerator);
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}
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free(hex_str.ptr);
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return uid;
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}
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METHOD(storage_t, create_gateway_enumerator, enumerator_t*,
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private_storage_t *this, int user)
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{
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enumerator_t *enumerator;
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enumerator = this->db->query(this->db,
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"SELECT gateways.oid AS gid, name, port, address FROM "
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"gateways, user_gateway AS ug ON gid = ug.gateway WHERE ug.user = ?;",
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DB_INT, user,
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DB_INT, DB_TEXT, DB_INT, DB_TEXT);
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if (!enumerator)
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{
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enumerator = enumerator_create_empty();
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}
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return enumerator;
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}
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METHOD(storage_t, destroy, void,
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private_storage_t *this)
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{
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this->db->destroy(this->db);
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free(this);
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}
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/*
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* see header file
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*/
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storage_t *storage_create(char *uri)
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{
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private_storage_t *this;
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INIT(this,
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.public = {
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.login = _login,
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.create_gateway_enumerator = _create_gateway_enumerator,
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.destroy = _destroy,
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},
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.db = lib->db->create(lib->db, uri),
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);
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if (this->db == NULL)
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{
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free(this);
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return NULL;
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}
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return &this->public;
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}
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