isync/config.c

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/* $Id$
*
* isync - IMAP4 to maildir mailbox synchronizer
* Copyright (C) 2000-1 Michael R. Elkins <me@mutt.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 <unistd.h>
#include <limits.h>
#include <errno.h>
#include <pwd.h>
#include <sys/types.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "isync.h"
config_t *boxes = 0;
/* set defaults from the global configuration section */
static void
config_defaults (config_t * conf)
{
memcpy (conf, &global, sizeof (config_t));
}
static char *
my_strndup (const char *s, size_t nchars)
{
char *r = malloc (sizeof (char) * (nchars + 1));
strncpy (r, s, nchars);
r[nchars] = 0;
return r;
}
char *
expand_strdup (const char *s)
{
char path[_POSIX_PATH_MAX];
struct passwd *pw;
const char *p;
if (*s == '~')
{
s++;
if (*s == '/')
{
/* current user */
pw = getpwuid (getuid ());
p = s + 1;
}
else
{
char *user;
p = strchr (s, '/');
if (p)
{
user = my_strndup (s, (int)(p - s));
p++;
}
else
user = strdup (s);
pw = getpwnam (user);
free (user);
}
if (!pw)
return 0;
snprintf (path, sizeof (path), "%s/%s", pw->pw_dir, p ? p : "");
s = path;
}
else if (*s != '/')
{
snprintf (path, sizeof (path), "%s/%s",
global.maildir ? global.maildir : "", s);
s = path;
}
return strdup (s);
}
void
load_config (const char *where)
{
char path[_POSIX_PATH_MAX];
char buf[1024];
struct passwd *pw;
config_t **cur = &boxes;
int line = 0;
FILE *fp;
char *p, *cmd, *val;
if (!where)
{
pw = getpwuid (getuid ());
snprintf (path, sizeof (path), "%s/.isyncrc", pw->pw_dir);
where = path;
}
patch from Daniel Resare <noa@metamatrix.se>: 1 giving a path to a nonexistant rc-file with the -c argument dumps core The patch adds a check to ensure that the given rc-file is accessible 2 the error messages given from failed openssl calls are bogus The handles the error from SSL_connect () correctly. The bug is understndable since the error handling in openssl is quite obfuscated. Good news is that the documentation manapges has been greatly updated in the latest version (0.9.6). See in particular err(3), ERR_get_error(3) and SSL_get_error(3). Please note that possible SSL_ERROR_SSL type errors from SSL_read() and SSL_write() is not handled. This should also be fixed. 3 connecting using the STARTTLS command with an imap server that is configured only to accept the TLSv1 protocol gives an error because isync sends an SSLv2 Hello message for backwards compability. (This is the case with the uw-imap 2000 that ships with redhat-7.0) I've read RFC2595 several times to see if it says something about compability SSL2/SSL3 hello messages but can't find anything. IMHO the correct thing to do is change the default to not use SSL2/3 compability hello when using the STARTTLS command but use it if the imaps port is used. The patch implements this change 4 repeated calls to SSL_CTX_set_options overwrites the old settings (the values needs to be ORed together) fixed in the patch patch from me@mutt.org: \Recent messages were put in the cur/ directory instead of new/ give error message when the LOGIN command fails
2001-02-14 20:46:41 +00:00
printf ("Reading %s\n", where);
fp = fopen (where, "r");
if (!fp)
{
if (errno != ENOENT)
perror ("fopen");
patch from Daniel Resare <noa@metamatrix.se>: 1 giving a path to a nonexistant rc-file with the -c argument dumps core The patch adds a check to ensure that the given rc-file is accessible 2 the error messages given from failed openssl calls are bogus The handles the error from SSL_connect () correctly. The bug is understndable since the error handling in openssl is quite obfuscated. Good news is that the documentation manapges has been greatly updated in the latest version (0.9.6). See in particular err(3), ERR_get_error(3) and SSL_get_error(3). Please note that possible SSL_ERROR_SSL type errors from SSL_read() and SSL_write() is not handled. This should also be fixed. 3 connecting using the STARTTLS command with an imap server that is configured only to accept the TLSv1 protocol gives an error because isync sends an SSLv2 Hello message for backwards compability. (This is the case with the uw-imap 2000 that ships with redhat-7.0) I've read RFC2595 several times to see if it says something about compability SSL2/SSL3 hello messages but can't find anything. IMHO the correct thing to do is change the default to not use SSL2/3 compability hello when using the STARTTLS command but use it if the imaps port is used. The patch implements this change 4 repeated calls to SSL_CTX_set_options overwrites the old settings (the values needs to be ORed together) fixed in the patch patch from me@mutt.org: \Recent messages were put in the cur/ directory instead of new/ give error message when the LOGIN command fails
2001-02-14 20:46:41 +00:00
return;
}
buf[sizeof buf - 1] = 0;
while ((fgets (buf, sizeof (buf) - 1, fp)))
{
p = buf;
cmd = next_arg (&p);
val = next_arg (&p);
line++;
if (!cmd || *cmd == '#')
continue;
if (!strcasecmp ("mailbox", cmd))
{
if (*cur)
cur = &(*cur)->next;
*cur = calloc (1, sizeof (config_t));
config_defaults (*cur);
/* not expanded at this point */
(*cur)->path = strdup (val);
}
else if (!strcasecmp ("maildir", cmd))
{
/* this only affects the global setting */
free (global.maildir);
global.maildir = expand_strdup (val);
}
else if (!strcasecmp ("host", cmd))
{
#if HAVE_LIBSSL
if (!strncasecmp ("imaps:", val, 6))
{
val += 6;
if (*cur)
{
(*cur)->use_imaps = 1;
(*cur)->port = 993;
patch from Daniel Resare <noa@metamatrix.se>: 1 giving a path to a nonexistant rc-file with the -c argument dumps core The patch adds a check to ensure that the given rc-file is accessible 2 the error messages given from failed openssl calls are bogus The handles the error from SSL_connect () correctly. The bug is understndable since the error handling in openssl is quite obfuscated. Good news is that the documentation manapges has been greatly updated in the latest version (0.9.6). See in particular err(3), ERR_get_error(3) and SSL_get_error(3). Please note that possible SSL_ERROR_SSL type errors from SSL_read() and SSL_write() is not handled. This should also be fixed. 3 connecting using the STARTTLS command with an imap server that is configured only to accept the TLSv1 protocol gives an error because isync sends an SSLv2 Hello message for backwards compability. (This is the case with the uw-imap 2000 that ships with redhat-7.0) I've read RFC2595 several times to see if it says something about compability SSL2/SSL3 hello messages but can't find anything. IMHO the correct thing to do is change the default to not use SSL2/3 compability hello when using the STARTTLS command but use it if the imaps port is used. The patch implements this change 4 repeated calls to SSL_CTX_set_options overwrites the old settings (the values needs to be ORed together) fixed in the patch patch from me@mutt.org: \Recent messages were put in the cur/ directory instead of new/ give error message when the LOGIN command fails
2001-02-14 20:46:41 +00:00
(*cur)->use_sslv2 = 1;
(*cur)->use_sslv3 = 1;
}
else
{
global.use_imaps = 1;
global.port = 993;
patch from Daniel Resare <noa@metamatrix.se>: 1 giving a path to a nonexistant rc-file with the -c argument dumps core The patch adds a check to ensure that the given rc-file is accessible 2 the error messages given from failed openssl calls are bogus The handles the error from SSL_connect () correctly. The bug is understndable since the error handling in openssl is quite obfuscated. Good news is that the documentation manapges has been greatly updated in the latest version (0.9.6). See in particular err(3), ERR_get_error(3) and SSL_get_error(3). Please note that possible SSL_ERROR_SSL type errors from SSL_read() and SSL_write() is not handled. This should also be fixed. 3 connecting using the STARTTLS command with an imap server that is configured only to accept the TLSv1 protocol gives an error because isync sends an SSLv2 Hello message for backwards compability. (This is the case with the uw-imap 2000 that ships with redhat-7.0) I've read RFC2595 several times to see if it says something about compability SSL2/SSL3 hello messages but can't find anything. IMHO the correct thing to do is change the default to not use SSL2/3 compability hello when using the STARTTLS command but use it if the imaps port is used. The patch implements this change 4 repeated calls to SSL_CTX_set_options overwrites the old settings (the values needs to be ORed together) fixed in the patch patch from me@mutt.org: \Recent messages were put in the cur/ directory instead of new/ give error message when the LOGIN command fails
2001-02-14 20:46:41 +00:00
global.use_sslv2 = 1;
global.use_sslv3 = 1;
}
}
#endif
if (*cur)
(*cur)->host = strdup (val);
else
global.host = strdup (val);
}
else if (!strcasecmp ("user", cmd))
{
if (*cur)
(*cur)->user = strdup (val);
else
global.user = strdup (val);
}
else if (!strcasecmp ("pass", cmd))
{
if (*cur)
(*cur)->pass = strdup (val);
else
global.pass = strdup (val);
}
else if (!strcasecmp ("port", cmd))
{
if (*cur)
(*cur)->port = atoi (val);
else
global.port = atoi (val);
}
else if (!strcasecmp ("box", cmd))
{
if (*cur)
(*cur)->box = strdup (val);
else
global.box = strdup (val);
}
else if (!strcasecmp ("alias", cmd))
{
if (*cur)
(*cur)->alias = strdup (val);
}
else if (!strcasecmp ("maxsize", cmd))
{
if (*cur)
(*cur)->max_size = atol (val);
else
global.max_size = atol (val);
}
else if (!strcasecmp ("MaxMessages", cmd))
{
if (*cur)
(*cur)->max_messages = atol (val);
else
global.max_messages = atol (val);
}
else if (!strcasecmp ("UseNamespace", cmd))
{
if (*cur)
(*cur)->use_namespace = (strcasecmp (val, "yes") == 0);
else
global.use_namespace = (strcasecmp (val, "yes") == 0);
}
else if (!strcasecmp ("CopyDeletedTo", cmd))
{
if (*cur)
(*cur)->copy_deleted_to = strdup (val);
else
global.copy_deleted_to = strdup (val);
}
else if (!strcasecmp ("Expunge", cmd))
{
if (*cur)
(*cur)->expunge = (strcasecmp (val, "yes") == 0);
else
global.expunge = (strcasecmp (val, "yes") == 0);
}
else if (!strcasecmp ("Delete", cmd))
{
if (*cur)
(*cur)->delete = (strcasecmp (val, "yes") == 0);
else
global.delete = (strcasecmp (val, "yes") == 0);
}
#if HAVE_LIBSSL
else if (!strcasecmp ("CertificateFile", cmd))
{
if (*cur)
(*cur)->cert_file = expand_strdup (val);
else
global.cert_file = expand_strdup (val);
}
else if (!strcasecmp ("RequireSSL", cmd))
{
if (*cur)
(*cur)->require_ssl = (strcasecmp (val, "yes") == 0);
else
global.require_ssl = (strcasecmp (val, "yes") == 0);
}
else if (!strcasecmp ("UseSSLv2", cmd))
{
if (*cur)
(*cur)->use_sslv2 = (strcasecmp (val, "yes") == 0);
else
global.use_sslv2 = (strcasecmp (val, "yes") == 0);
}
else if (!strcasecmp ("UseSSLv3", cmd))
{
if (*cur)
(*cur)->use_sslv3 = (strcasecmp (val, "yes") == 0);
else
global.use_sslv3 = (strcasecmp (val, "yes") == 0);
}
else if (!strcasecmp ("UseTLSv1", cmd))
{
if (*cur)
(*cur)->use_tlsv1 = (strcasecmp (val, "yes") == 0);
else
global.use_tlsv1 = (strcasecmp (val, "yes") == 0);
}
else if (!strcasecmp ("RequireCRAM", cmd))
{
if (*cur)
(*cur)->require_cram = (strcasecmp (val, "yes") == 0);
else
global.require_cram = (strcasecmp (val, "yes") == 0);
}
#endif
else if (buf[0])
printf ("%s:%d:unknown keyword:%s\n", path, line, cmd);
}
fclose (fp);
}
config_t *
find_box (const char *s)
{
config_t *p = boxes;
for (; p; p = p->next)
{
if (!strcmp (s, p->path) || (p->alias && !strcmp (s, p->alias)))
return p;
else
{
/* check to see if the full pathname was specified on the
* command line.
*/
char *t = expand_strdup (p->path);
if (!strcmp (s, t))
{
free (t);
return p;
}
free (t);
}
}
return 0;
}
void
free_config (void)
{
free (global.user);
free (global.maildir);
free (global.host);
free (global.pass);
}