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Import Upstream version 1.0.10

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This commit is contained in:
Guus Sliepen 2019-08-26 13:44:38 +02:00
parent 5d002cc66a
commit fa871d431d
152 changed files with 15479 additions and 25408 deletions
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56
src/meta.c
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@ -1,7 +1,8 @@
/*
meta.c -- handle the meta communication
Copyright (C) 2000-2006 Guus Sliepen <guus@tinc-vpn.org>,
Copyright (C) 2000-2009 Guus Sliepen <guus@tinc-vpn.org>,
2000-2005 Ivo Timmermans
2006 Scott Lamb <slamb@slamb.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
@ -13,11 +14,9 @@
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: meta.c 1471 2006-11-14 12:28:04Z guus $
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"
@ -34,14 +33,16 @@
#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,
ifdebug(META) logger(LOG_DEBUG, "Sending %d bytes of metadata to %s (%s)", length,
c->name, c->hostname);
if(!c->outbuflen)
@ -63,11 +64,11 @@ bool send_meta(connection_t *c, const char *buffer, int 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"),
logger(LOG_ERR, "Error while encrypting metadata to %s (%s): %s",
c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL));
return false;
} else if(outlen > length) {
logger(LOG_EMERG, _("Encrypted data too long! Heap corrupted!"));
logger(LOG_EMERG, "Encrypted data too long! Heap corrupted!");
abort();
}
c->outbuflen += outlen;
@ -79,29 +80,28 @@ bool send_meta(connection_t *c, const char *buffer, int length)
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)"),
ifdebug(META) logger(LOG_DEBUG, "Flushing %d bytes to %s (%s)",
c->outbuflen, c->name, c->hostname);
while(c->outbuflen) {
result = send(c->socket, c->outbuf + c->outbufstart, c->outbuflen, 0);
if(result <= 0) {
if(!errno || errno == EPIPE) {
ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Connection closed by %s (%s)"),
ifdebug(CONNECTIONS) logger(LOG_NOTICE, "Connection closed by %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"),
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,
logger(LOG_ERR, "Flushing meta data to %s (%s) failed: %s", c->name,
c->hostname, strerror(errno));
}
@ -116,13 +116,10 @@ bool flush_meta(connection_t *c)
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;
@ -131,15 +128,12 @@ void broadcast_meta(connection_t *from, const char *buffer, int length)
}
}
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.
@ -153,12 +147,12 @@ bool receive_meta(connection_t *c)
if(lenin <= 0) {
if(!lenin || !errno) {
ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Connection closed by %s (%s)"),
ifdebug(CONNECTIONS) logger(LOG_NOTICE, "Connection closed by %s (%s)",
c->name, c->hostname);
} else if(errno == EINTR)
return true;
else
logger(LOG_ERR, _("Metadata socket read error for %s (%s): %s"),
logger(LOG_ERR, "Metadata socket read error for %s (%s): %s",
c->name, c->hostname, strerror(errno));
return false;
@ -173,7 +167,7 @@ bool receive_meta(connection_t *c)
if(c->status.decryptin && !decrypted) {
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"),
logger(LOG_ERR, "Error while decrypting metadata from %s (%s): %s",
c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL));
return false;
}
@ -226,12 +220,10 @@ bool receive_meta(connection_t *c)
}
if(c->buflen >= MAXBUFSIZE) {
logger(LOG_ERR, _("Metadata read buffer overflow for %s (%s)"),
logger(LOG_ERR, "Metadata read buffer overflow for %s (%s)",
c->name, c->hostname);
return false;
}
c->last_ping_time = now;
return true;
}