mysql-admutils/common.c
Knut Petter Svendsen ff52786682 With alter table patches and the undocumented feature for administering
mysql users and databases with same name as unix groups for the user.
2002-02-27 08:49:48 +00:00

198 lines
3.5 KiB
C

/*
* @(#) $Header: /tmp/cvs/mysql-admutils/common.c,v 1.2 2002-02-27 08:49:48 knutpett Exp $
*
* functions used by mysql-dbadm.c and mysql-useradm.c
*
*/
#include <config.h>
#include <stdio.h>
#include <stdarg.h>
#include <mysql.h>
#include <assert.h>
#include <pwd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#include <grp.h>
#include "mysql-admutils.h"
char *program_name;
static char *rcsheader = "@(#) " PACKAGE " " VERSION " ljosa@initio.no $Header: /tmp/cvs/mysql-admutils/common.c,v 1.2 2002-02-27 08:49:48 knutpett Exp $";
int
version()
{
printf("%s %s\n", program_name, rcsheader);
exit(0);
}
int
wrong_use(char *format, ...)
{
va_list ap;
if (format)
{
fprintf(stderr, "%s: ", program_name);
va_start(ap, format);
vfprintf(stderr, format, ap);
va_end(ap);
putchar('\n');
}
fprintf(stderr, "Try `%s --help' for more information.\n", program_name);
return 1;
}
/* always returns 1. */
int
dberror(MYSQL *pmysql, char *format, ...)
{
char *errmsg;
va_list ap;
fprintf(stderr, "%s: ", program_name);
va_start(ap, format);
vfprintf(stderr, format, ap);
va_end(ap);
fprintf(stderr, "\n");
if (pmysql)
{
errmsg = mysql_error(pmysql);
if ((errmsg) && (strcmp(errmsg, "") != 0))
fprintf(stderr, "mysql: %s\n", errmsg);
mysql_close(pmysql);
}
return 1;
}
/* always returns 1. */
int
fatal_error(char *format, ...)
{
va_list ap;
fprintf(stderr, "%s: ", program_name);
va_start(ap, format);
vfprintf(stderr, format, ap);
va_end(ap);
fprintf(stderr, "\n");
return 1;
}
/* decides if the UNIX user is entitled to the MySQL database or MySQL user. */
int
owner(char *name)
{
struct passwd *p;
p = getpwuid(getuid());
if (!p)
{
dberror(NULL, "Failed to look up your UNIX username.");
exit(1);
}
if (strcmp(name, p->pw_name) == 0)
return 1; /* OK */
if ((strncmp(name, p->pw_name, strlen(p->pw_name)) == 0) &&
(*(name + strlen(p->pw_name)) == '_'))
return 1; /* OK */
return 0; /* not owner if we get as far as this */
}
/**
* Decides if the user is member of a group. The Unix group can't contain any
* '_'. i.e 'fidi_s' won't be accepted.
*/
int
member(char *gr) {
char *username;
char *group;
struct group *g;
struct passwd *p;
char *foo;
/* size_t i = 0; */
/* Get username */
p = getpwuid(getuid());
if (!p) {
fprintf(stderr, "Failed to look up your UNIX username.");
exit(1);
}
username = p->pw_name;
/* Copy string, but cut at '_' */
group = strdup(gr);
if (group == NULL) {
fprintf(stderr, "Couldn't allocate memory. Terminating.");
exit(1);
}
foo = strchr(group, '_');
if (foo) {
#if DEBUG
printf("gr = %s, group = %s, foo = %s\n", gr, group, foo);
#endif
*foo = '\0';
}
/* Get group */
g = getgrnam(group);
if (g == NULL) {
fprintf(stderr, "No such group: %s\n", group);
exit(1);
}
/* Check if user is member of group */
while(*g->gr_mem != NULL) {
char * member = *g->gr_mem;
#if DEBUG
printf("Medlem: %s\n", *g->gr_mem);
#endif
if (strcmp(member,username) == 0) {
#if DEBUG
printf("You have access to '%s'\n", gr);
#endif
return 1; /* OK */
} else
*g->gr_mem++;
}
#if DEBUG
printf("You have no access to '%s'\n", gr);
#endif
return 0;
}
int
reload(MYSQL *pmysql)
{
return mysql_reload(pmysql);
}