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/* cvm-vmailmgr.c - Direct file access vmailmgr CVM
* Copyright (C) 2010 Bruce Guenter <bruce@untroubled.org>
*
* 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 of the License, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <sys/types.h>
#include <errno.h>
#include <grp.h>
#include <pwd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <cdb/cdb.h>
#include <cdb/str.h>
#include <dict/dict.h>
#include <dict/load.h>
#include <iobuf/iobuf.h>
#include <path/path.h>
#include <str/str.h>
#include <vmailmgr/vpwentry.h>
#include "module.h"
#include "qmail.h"
#include "cvm-vmailmgr.h"
const char program[] = "cvm-vmailmgr";
extern char* crypt(const char* key, const char* salt);
extern char* md5_crypt(const char* key, const char* salt);
static const char* null_crypt(const char* pass)
{
static str buffer;
if (!str_copys(&buffer, "$0$")) return 0;
if (!str_cats(&buffer, pass)) return 0;
return buffer.s;
}
str default_user = {0,0,0};
str domain = {0,0,0};
str virtuser = {0,0,0};
str vpwdata = {0,0,0};
const char* pwfile = 0;
static int lock_disabled;
static int do_autoconvert;
static vpwentry vpw;
#define DEBUG(A,B,C) debug(__FUNCTION__, __LINE__, A, B, C)
static int show_debug = 0;
void debug(const char* func, int line,
const char* a, const char* b, const char* c)
{
if (!show_debug) return;
obuf_puts(&errbuf, func);
obuf_putc(&errbuf, '(');
obuf_puti(&errbuf, line);
obuf_puts(&errbuf, "): ");
if (a) obuf_puts(&errbuf, a);
if (b) obuf_puts(&errbuf, b);
if (c) obuf_puts(&errbuf, c);
obuf_putsflush(&errbuf, "\n");
}
int cvm_module_init(void)
{
const char* tmp;
memset(&vpw, 0, sizeof vpw);
if ((pwfile = getenv("VMAILMGR_PWFILE")) == 0) pwfile = "passwd.cdb";
if ((tmp = getenv("VMAILMGR_DEFAULT")) == 0) tmp = "+";
lock_disabled = getenv("VMAILMGR_LOCK_DISABLED") != 0;
do_autoconvert = getenv("VMAILMGR_AUTOCONVERT") != 0;
if (!str_copys(&default_user, tmp)) return CVME_GENERAL;
if (getenv("DEBUG") != 0) show_debug = 1;
return lookup_init();
}
static str directory;
/* Account name is either "baseuser-virtuser" or "virtuser@domain" */
int cvm_module_lookup(void)
{
int err;
if ((err = lookup_virtuser()) != 0) return err;
if (!vpwentry_import(&vpw, &virtuser, &vpwdata)) {
DEBUG("Could not import virtual password data", 0, 0);
return CVME_IO;
}
return 0;
}
int cvm_module_authenticate(void)
{
const char* stored;
const char* enc;
const char* pass;
CVM_CRED_REQUIRED(PASSWORD);
if (lock_disabled && !vpw.is_mailbox_enabled) {
DEBUG("Mailbox is disabled", 0, 0);
cvm_module_fact_uint(CVM_FACT_OUTOFSCOPE, 0);
return CVME_PERMFAIL;
}
if (vpw.pass.len < 3) {
DEBUG("Encoded password is too short", 0, 0);
cvm_module_fact_uint(CVM_FACT_OUTOFSCOPE, 0);
return CVME_PERMFAIL;
}
stored = vpw.pass.s;
pass = cvm_module_credentials[CVM_CRED_PASSWORD].s;
if (stored[0] == '$' && stored[2] == '$') {
switch (stored[1]) {
case '0':
enc = null_crypt(pass);
break;
case '1':
enc = md5_crypt(pass, stored);
break;
default:
enc = crypt(pass, stored);
}
}
else
enc = crypt(pass, stored);
if (strcmp(enc, stored) == 0) {
if (do_autoconvert
&& (stored[0] != '$' || stored[1] != '0' || stored[2] != '$'))
return vmailmgr_autoconvert();
return 0;
}
DEBUG("authentication denied", 0, 0);
cvm_module_fact_uint(CVM_FACT_OUTOFSCOPE, 0);
return CVME_PERMFAIL;
}
int cvm_module_results(void)
{
if (!str_copy(&directory, &vmuser.homedir)) return CVME_IO;
if (!path_merge(&directory, vpw.directory.s)) return CVME_IO;
cvm_fact_username = vpw.name.s;
cvm_fact_userid = vmuser.uid;
cvm_fact_groupid = vmuser.gid;
cvm_fact_realname = 0;
cvm_fact_directory = directory.s;
cvm_fact_shell = 0;
cvm_fact_sys_username = vmuser.user.s;
cvm_fact_sys_directory = vmuser.homedir.s;
cvm_fact_domain = domain.s;
cvm_fact_mailbox = directory.s;
return 0;
}
void cvm_module_stop(void)
{
}
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