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/* Copyright (C) 2003 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#if defined(__GNUC__) && defined(USE_PRAGMA_IMPLEMENTATION)
#pragma implementation
#endif
#include "user_map.h"
#include <mysql_com.h>
#include <m_string.h>
#include "log.h"
struct User
{
char user[USERNAME_LENGTH + 1];
uint8 user_length;
uint8 salt[SCRAMBLE_LENGTH];
int init(const char *line);
};
int User::init(const char *line)
{
const char *name_begin, *name_end, *password;
int line_ending_len= 1;
if (line[0] == '\'' || line[0] == '"')
{
name_begin= line + 1;
name_end= strchr(name_begin, line[0]);
if (name_end == 0 || name_end[1] != ':')
goto err;
password= name_end + 2;
}
else
{
name_begin= line;
name_end= strchr(name_begin, ':');
if (name_end == 0)
goto err;
password= name_end + 1;
}
user_length= name_end - name_begin;
if (user_length > USERNAME_LENGTH)
goto err;
/*
assume that newline characater is present
we support reading password files that end in \n or \r\n on
either platform.
*/
if (password[strlen(password)-2] == '\r')
line_ending_len= 2;
if (strlen(password) != (uint) (SCRAMBLED_PASSWORD_CHAR_LENGTH +
line_ending_len))
goto err;
memcpy(user, name_begin, user_length);
user[user_length]= 0;
get_salt_from_password(salt, password);
log_info("loaded user %s", user);
return 0;
err:
log_error("error parsing user and password at line %s", line);
return 1;
}
C_MODE_START
static byte* get_user_key(const byte* u, uint* len,
my_bool __attribute__((unused)) t)
{
const User *user= (const User *) u;
*len= user->user_length;
return (byte *) user->user;
}
static void delete_user(void *u)
{
User *user= (User *) u;
delete user;
}
C_MODE_END
int User_map::init()
{
enum { START_HASH_SIZE= 16 };
if (hash_init(&hash, default_charset_info, START_HASH_SIZE, 0, 0,
get_user_key, delete_user, 0))
return 1;
return 0;
}
User_map::~User_map()
{
hash_free(&hash);
}
/*
Load all users from the password file. Must be called once right after
construction.
In case of failure, puts error message to the log file and returns 1
*/
int User_map::load(const char *password_file_name)
{
FILE *file;
char line[USERNAME_LENGTH + SCRAMBLED_PASSWORD_CHAR_LENGTH +
2 + /* for possible quotes */
1 + /* for ':' */
2 + /* for newline */
1]; /* for trailing zero */
User *user;
int rc= 1;
if ((file= my_fopen(password_file_name, O_RDONLY | O_BINARY, MYF(0))) == 0)
{
/* Probably the password file wasn't specified. Try to leave without it */
log_info("[WARNING] can't open password file %s: errno=%d, %s", password_file_name,
errno, strerror(errno));
return 0;
}
while (fgets(line, sizeof(line), file))
{
/* skip comments and empty lines */
if (line[0] == '#' || line[0] == '\n' &&
(line[1] == '\0' || line[1] == '\r'))
continue;
if ((user= new User) == 0)
goto done;
if (user->init(line) || my_hash_insert(&hash, (byte *) user))
goto err_init_user;
}
if (feof(file))
rc= 0;
goto done;
err_init_user:
delete user;
done:
my_fclose(file, MYF(0));
return rc;
}
/*
Check if user exists and password is correct
RETURN VALUE
0 - user found and password OK
1 - password mismatch
2 - user not found
*/
int User_map::authenticate(const char *user_name, uint length,
const char *scrambled_password,
const char *scramble) const
{
const User *user= (const User *) hash_search((HASH *) &hash,
(byte *) user_name, length);
if (user)
return check_scramble(scrambled_password, scramble, user->salt);
return 2;
}
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