/*
meta.c -- handle the meta communication
- Copyright (C) 2000-2005 Guus Sliepen <guus@tinc-vpn.org>,
- 2000-2005 Ivo Timmermans <ivo@tinc-vpn.org>
+ Copyright (C) 2000-2009 Guus Sliepen <guus@tinc-vpn.org>,
+ 2000-2005 Ivo Timmermans
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
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.
-
- $Id$
+ 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.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "system.h"
#include "utils.h"
#include "xalloc.h"
-bool send_meta(connection_t *c, const char *buffer, int length)
-{
+bool send_meta(connection_t *c, const char *buffer, int length) {
int outlen;
int result;
- cp();
+ if(!c) {
+ logger(LOG_ERR, _("send_meta() called with NULL pointer!"));
+ abort();
+ }
ifdebug(META) logger(LOG_DEBUG, _("Sending %d bytes of metadata to %s (%s)"), length,
c->name, c->hostname);
/* Add our data to buffer */
if(c->status.encryptout) {
- result = EVP_EncryptUpdate(c->outctx, c->outbuf + c->outbufstart + c->outbuflen,
- &outlen, buffer, length);
+ result = EVP_EncryptUpdate(c->outctx, (unsigned char *)c->outbuf + c->outbufstart + c->outbuflen,
+ &outlen, (unsigned char *)buffer, length);
if(!result || outlen < length) {
logger(LOG_ERR, _("Error while encrypting metadata to %s (%s): %s"),
c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL));
return true;
}
-bool flush_meta(connection_t *c)
-{
+bool flush_meta(connection_t *c) {
int result;
ifdebug(META) logger(LOG_DEBUG, _("Flushing %d bytes to %s (%s)"),
c->name, c->hostname);
} else if(errno == EINTR) {
continue;
+#ifdef EWOULDBLOCK
} else if(errno == EWOULDBLOCK) {
ifdebug(CONNECTIONS) logger(LOG_DEBUG, _("Flushing %d bytes to %s (%s) would block"),
c->outbuflen, c->name, c->hostname);
return true;
+#endif
} else {
logger(LOG_ERR, _("Flushing meta data to %s (%s) failed: %s"), c->name,
c->hostname, strerror(errno));
return true;
}
-void broadcast_meta(connection_t *from, const char *buffer, int length)
-{
+void broadcast_meta(connection_t *from, const char *buffer, int length) {
avl_node_t *node;
connection_t *c;
- cp();
-
for(node = connection_tree->head; node; node = node->next) {
c = node->data;
}
}
-bool receive_meta(connection_t *c)
-{
+bool receive_meta(connection_t *c) {
int oldlen, i, result;
int lenin, lenout, reqlen;
bool decrypted = false;
char inbuf[MAXBUFSIZE];
- cp();
-
/* Strategy:
- Read as much as possible from the TCP socket in one go.
- Decrypt it.
/* Decrypt */
if(c->status.decryptin && !decrypted) {
- result = EVP_DecryptUpdate(c->inctx, inbuf, &lenout, c->buffer + oldlen, lenin);
+ result = EVP_DecryptUpdate(c->inctx, (unsigned char *)inbuf, &lenout, (unsigned char *)c->buffer + oldlen, lenin);
if(!result || lenout != lenin) {
logger(LOG_ERR, _("Error while decrypting metadata from %s (%s): %s"),
c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL));