mysql-admutils/pwfile.c
Geir Hauge 21f0f57f99 Version 0.51
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2007-02-27 14:10:08 +00:00

109 lines
1.9 KiB
C

/*
* @($) $Id: pwfile.c,v 1.3 2007-02-27 14:10:08 geirha Exp $
*
* functions for parsing the config file.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <unistd.h>
#include <sys/resource.h>
#include "mysql-admutils.h"
#include "pwyacc.h"
/* the MySQL maximum */
#define MAXPWCHARS 16
/* defaults for configurable values */
const char* db_user = "root";
const char* db_server = "localhost";
const char* db_passwd = NULL;
const char* db_name = "mysql";
extern int yyparse(void);
extern FILE *yyin;
int config_line = 1;
static FILE *pwfile;
static char *filename = SYSCONFDIR "/mysql-admutils.conf";
int
read_config_file(void)
{
struct rlimit rlim;
int rc; /* return code */
/* to stop the user from obtaining the password from a core dump. */
if (getrlimit(RLIMIT_CORE, &rlim) == -1) {
perror("getrlimit");
exit(1);
}
rlim.rlim_max = 0;
if (setrlimit(RLIMIT_CORE, &rlim) == -1) {
perror("setrlimit");
exit(1);
}
pwfile = fopen(filename, "r");
if (!pwfile) {
fatal_error("cannot open configuration file %s", filename);
exit(1);
}
/* we don't need to be SUID anymore. */
if (seteuid(getuid()) != 0)
perror("seteuid");
yyin = pwfile;
rc = yyparse();
fclose(pwfile);
return rc;
}
int
yywrap(void)
{
return 1;
}
int
yyerror(const char *msg)
{
fprintf(stderr, "%s:%d: %s\n", filename, config_line, msg);
return 0;
}
int
config_set_string_var(int var, const char *value)
{
assert(value);
switch (var) {
case USER:
db_user = value;
break;
case HOST:
db_server = value;
break;
case PASSWORD:
if (strlen(value) > MAXPWCHARS) {
fprintf(stderr, "%s:%d: password is too long (%d chars > %d chars)\n",
filename, config_line, strlen(value), MAXPWCHARS);
fclose(pwfile);
exit(1);
}
db_passwd = value;
break;
default:
assert(!"We should never get here.");
}
return 0;
}