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/* vmautoconvert.c - Automatically convert passwords for vmailmgr.
* 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 <bglibs/sysdeps.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <bglibs/cdb.h>
#include <bglibs/iobuf.h>
#include <bglibs/path.h>
#include <bglibs/str.h>
#include <vmailmgr/vpwentry.h>
#include <bglibs/uint32.h>
#include "module.h"
#include "qmail.h"
#include "cvm-vmailmgr.h"
static int read_start(ibuf* in, uint32* end)
{
unsigned char buf[2048];
if (!ibuf_read(in, (char*)buf, sizeof buf))
return 0;
*end = uint32_get_lsb(buf);
return 1;
}
static int read_cdb_pair(ibuf* in, str* key, str* data)
{
unsigned char buf[8];
uint32 keylen;
uint32 datalen;
if (!ibuf_read(in, (char*)buf, sizeof buf))
return 0;
keylen = uint32_get_lsb(buf);
datalen = uint32_get_lsb(buf+4);
if (!str_ready(key, keylen)
|| !str_ready(data, datalen)
|| !ibuf_read(in, key->s, keylen)
|| !ibuf_read(in, data->s, datalen))
return 0;
key->s[key->len = keylen] = 0;
data->s[data->len = datalen] = 0;
return 1;
}
static str tmppwfile;
static str key;
static str data;
static int convert_data(void)
{
struct vpwentry vpw;
int status = 1;
memset(&vpw, 0, sizeof vpw);
if (!vpwentry_import(&vpw, &virtuser, &data))
return 0;
status = str_copyb(&vpw.pass, "$0$", 3)
&& str_cat(&vpw.pass, &cvm_module_credentials[CVM_CRED_PASSWORD])
&& vpwentry_export(&vpw, &data);
vpwentry_free(&vpw);
return status;
}
int vmailmgr_autoconvert(void)
{
int writefd = -1;
ibuf reader;
struct cdb_make writer;
int error = 0;
int readall = 0;
int writerr = 0;
if ((writefd = path_mktemp(pwfile, &tmppwfile)) != -1) {
if (cdb_make_start(&writer, writefd) != 0)
error = CVME_IO | CVME_FATAL;
else {
if (ibuf_open(&reader, pwfile, 0)) {
uint32 end;
struct stat st;
if (fstat(reader.io.fd, &st) == 0
&& fchmod(writefd, st.st_mode) == 0
&& fchown(writefd, st.st_uid, st.st_gid) == 0
&& read_start(&reader, &end)) {
while (ibuf_tell(&reader) < end) {
if (!read_cdb_pair(&reader, &key, &data))
break;
if (str_diff(&key, &virtuser) == 0)
if (!convert_data()) {
writerr = 1;
break;
}
if (cdb_make_add(&writer, key.s, key.len, data.s, data.len) != 0) {
writerr = 1;
break;
}
}
readall = ibuf_tell(&reader) == end;
}
ibuf_close(&reader);
}
if (cdb_make_finish(&writer) != 0)
error |= CVME_FATAL;
else
if (readall && !writerr)
rename(tmppwfile.s, pwfile);
}
close(writefd);
unlink(tmppwfile.s);
}
return error;
}
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