int auth_login(const char *service,
const char *userid,
const char *passwd,
int (*callback_func)(struct authinfo *, void *),
void *callback_arg)
{
char *p;
int rc;
if (badstr(userid) || badstr(passwd))
{
errno=EINVAL;
return -1;
}
courier_authdebug_login_init();
courier_authdebug_login( 1, "username=%s", userid );
courier_authdebug_login( 2, "password=%s", passwd );
p = strdupdefdomain(userid, "\n", passwd, "\n");
if (!p)
return (-1);
rc=auth_generic(service, AUTHTYPE_LOGIN, p,
callback_func,
callback_arg);
free(p);
return rc;
}
int login_changepwd(const char *u, const char *oldpwd, const char *newpwd,
int *rc)
{
char *uid=strdup(u);
char *driver;
int i;
if (!uid)
enomem();
verifyuid(uid);
if ((driver=strrchr(uid, '.')) == 0)
{
free(uid);
enomem();
}
*driver++=0;
for (i=0; authstaticmodulelist[i]; i++)
{
if (strcmp(authstaticmodulelist[i]->auth_name, driver) == 0)
{
*rc=badstr(uid) || badstr(oldpwd) || badstr(newpwd)
? 1:(*authstaticmodulelist[i]->auth_changepwd)
("webmail", uid, oldpwd, newpwd);
free(uid);
return (0);
}
}
return (-1);
}
static void verifyuid(char *uid)
{
if (badstr(uid))
{
free(uid);
enomem();
}
}
const char *login(const char *uid, const char *pass, int *can_changepwd)
{
const char *driver;
const char *p=do_login(uid, pass, &driver, can_changepwd);
static char *login_id_buf=0;
if (p)
{
if (badstr(uid) || badstr(pass))
return (NULL);
if (login_id_buf) free(login_id_buf);
if ((login_id_buf=malloc(strlen(p)+strlen(driver)+2)) == 0)
enomem();
p=strcat(strcat(strcpy(login_id_buf, p), "."), driver);
}
return (p);
}
unsigned int
x86_nop (unsigned char *dest, unsigned int dest_len,
unsigned char *bad, int bad_len)
{
int walk;
int bcount; /* bad counter */
char * xs;
char * xferstr[] = {
"0011.0111", /* aaa */
"0011.1111", /* aas */
"1001.1000", /* cbw */
"1001.1001", /* cdq */
"1111.1000", /* clc */
"1111.1100", /* cld */
"1111.0101", /* cmc */
"0010.0111", /* daa */
"0010.1111", /* das */
"0100.1r", /* dec <reg> */
"0100.0r", /* inc <reg> */
"1001.1111", /* lahf */
"1001.0000", /* nop */
"1111.1001", /* stc */
"1111.1101", /* std */
"1001.0r", /* xchg al, <reg> */
NULL,
};
unsigned char tgt;
for (walk = 0 ; dest_len > 0 ; dest_len -= 1 , walk += 1) {
/* avoid endless loops on excessive badlisting */
for (bcount = 0 ; bcount < 16384 ; ++bcount) {
xs = xferstr[random_get (0, 15)];
tgt = x86_nop_xfer (xs);
dest[walk] = tgt;
if (badstr (&dest[walk], 1, bad, bad_len) == 0)
break;
}
/* should not happen */
if (bcount >= 16384) {
fprintf (stderr, "too much blacklisting, giving up...\n");
exit (EXIT_FAILURE);
}
}
return (walk);
}
