authenticate.c
2.18 KB
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999, 2001 Free Software Foundation, Inc.
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; either version 2, or (at your option)
any later version.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "imap4d.h"
extern int auth_gssapi __P((struct imap4d_command *, char **username));
struct imap_auth {
char *name;
int (*handler) __P((struct imap4d_command *, char **));
} imap_auth_tab[] = {
#ifdef WITH_GSSAPI
{ "GSSAPI", auth_gssapi },
#endif
{ NULL, NULL }
};
int
imap4d_authenticate (struct imap4d_command *command, char *arg)
{
char *sp = NULL;
char *auth_type;
struct imap_auth *ap;
char *username = NULL;
if (! (command->states & state))
return util_finish (command, RESP_BAD, "Wrong state");
auth_type = util_getword (arg, &sp);
util_unquote (&auth_type);
if (!auth_type)
return util_finish (command, RESP_BAD, "Too few arguments");
for (ap = imap_auth_tab; ap->name; ap++)
if (strcmp (auth_type, ap->name) == 0)
{
if (ap->handler (command, &username))
return 1;
}
if (username)
{
struct passwd *pw = mu_getpwnam (username);
if (pw == NULL)
return util_finish (command, RESP_NO,
"User name or passwd rejected");
if (pw->pw_uid > 0 && !mu_virtual_domain)
setuid (pw->pw_uid);
homedir = mu_normalize_path (strdup (pw->pw_dir), "/");
/* FIXME: Check for errors. */
chdir (homedir);
namespace_init(pw->pw_dir);
syslog (LOG_INFO, "User '%s' logged in", username);
return 0;
}
return util_finish (command, RESP_NO,
"Authentication mechanism not supported");
}