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Nodes should only be in the node_udp_tree if they are reachable.
[tinc]
/
src
/
protocol.c
diff --git
a/src/protocol.c
b/src/protocol.c
index
a648547
..
141290f
100644
(file)
--- a/
src/protocol.c
+++ b/
src/protocol.c
@@
-1,7
+1,7
@@
/*
protocol.c -- handle the meta-protocol, basic functions
/*
protocol.c -- handle the meta-protocol, basic functions
- Copyright (C) 1999-200
1 Ivo Timmermans <ivo@o2w.nl
>,
- 2000
,2001 Guus Sliepen <guus@sliepen.eu
.org>
+ Copyright (C) 1999-200
4 Ivo Timmermans <ivo@tinc-vpn.org
>,
+ 2000
-2004 Guus Sliepen <guus@tinc-vpn
.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
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
@@
-17,33
+17,24
@@
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id
: protocol.c,v 1.28.4.139 2003/07/06 23:16:28 guus Exp
$
+ $Id$
*/
*/
-#include "config.h"
-
-#include <sys/types.h>
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <errno.h>
-
-#include <utils.h>
-#include <xalloc.h>
+#include "system.h"
#include "conf.h"
#include "conf.h"
-#include "protocol.h"
-#include "meta.h"
#include "connection.h"
#include "logger.h"
#include "connection.h"
#include "logger.h"
+#include "meta.h"
+#include "protocol.h"
+#include "utils.h"
+#include "xalloc.h"
-#include "system.h"
+bool tunnelserver = false;
/* Jumptable for the request handlers */
/* Jumptable for the request handlers */
-static
int
(*request_handlers[])(connection_t *) = {
+static
bool
(*request_handlers[])(connection_t *) = {
id_h, metakey_h, challenge_h, chal_reply_h, ack_h,
status_h, error_h, termreq_h,
ping_h, pong_h,
id_h, metakey_h, challenge_h, chal_reply_h, ack_h,
status_h, error_h, termreq_h,
ping_h, pong_h,
@@
-64,21
+55,19
@@
static char (*request_name[]) = {
static avl_tree_t *past_request_tree;
static avl_tree_t *past_request_tree;
-
int check_id(
char *id)
+
bool check_id(const
char *id)
{
{
- int i;
+ for(; *id; id++)
+ if(!isalnum(*id) && *id != '_')
+ return false;
- for(i = 0; i < strlen(id); i++)
- if(!isalnum(id[i]) && id[i] != '_')
- return -1;
-
- return 0;
+ return true;
}
/* Generic request routines - takes care of logging and error
detection as well */
}
/* Generic request routines - takes care of logging and error
detection as well */
-
int
send_request(connection_t *c, const char *format, ...)
+
bool
send_request(connection_t *c, const char *format, ...)
{
va_list args;
char buffer[MAXBUFSIZE];
{
va_list args;
char buffer[MAXBUFSIZE];
@@
-95,53
+84,53
@@
int send_request(connection_t *c, const char *format, ...)
va_end(args);
if(len < 0 || len > MAXBUFSIZE - 1) {
va_end(args);
if(len < 0 || len > MAXBUFSIZE - 1) {
- logger(
DEBUG_ALWAYS,
LOG_ERR, _("Output buffer overflow while sending request to %s (%s)"),
+ logger(LOG_ERR, _("Output buffer overflow while sending request to %s (%s)"),
c->name, c->hostname);
c->name, c->hostname);
- return
-1
;
+ return
false
;
}
}
- if
(debug_level >= DEBUG_
PROTOCOL) {
+ if
debug(
PROTOCOL) {
sscanf(buffer, "%d", &request);
sscanf(buffer, "%d", &request);
- if
(debug_level >= DEBUG_
META)
- logger(
DEBUG_ALWAYS,
LOG_DEBUG, _("Sending %s to %s (%s): %s"),
+ if
debug(
META)
+ logger(LOG_DEBUG, _("Sending %s to %s (%s): %s"),
request_name[request], c->name, c->hostname, buffer);
else
request_name[request], c->name, c->hostname, buffer);
else
- logger(
DEBUG_ALWAYS,
LOG_DEBUG, _("Sending %s to %s (%s)"), request_name[request],
+ logger(LOG_DEBUG, _("Sending %s to %s (%s)"), request_name[request],
c->name, c->hostname);
}
buffer[len++] = '\n';
c->name, c->hostname);
}
buffer[len++] = '\n';
- if(c == broadcast)
- return broadcast_meta(NULL, buffer, len);
- else
+ if(c == broadcast) {
+ broadcast_meta(NULL, buffer, len);
+ return true;
+ } else
return send_meta(c, buffer, len);
}
return send_meta(c, buffer, len);
}
-
int
forward_request(connection_t *from)
+
void
forward_request(connection_t *from)
{
int request;
{
int request;
- cp();
cp();
cp();
- if
(debug_level >= DEBUG_
PROTOCOL) {
+ if
debug(
PROTOCOL) {
sscanf(from->buffer, "%d", &request);
sscanf(from->buffer, "%d", &request);
- if
(debug_level >= DEBUG_
META)
- logger(
DEBUG_ALWAYS,
LOG_DEBUG, _("Forwarding %s from %s (%s): %s"),
+ if
debug(
META)
+ logger(LOG_DEBUG, _("Forwarding %s from %s (%s): %s"),
request_name[request], from->name, from->hostname,
from->buffer);
else
request_name[request], from->name, from->hostname,
from->buffer);
else
- logger(
DEBUG_ALWAYS,
LOG_DEBUG, _("Forwarding %s from %s (%s)"),
+ logger(LOG_DEBUG, _("Forwarding %s from %s (%s)"),
request_name[request], from->name, from->hostname);
}
from->buffer[from->reqlen - 1] = '\n';
request_name[request], from->name, from->hostname);
}
from->buffer[from->reqlen - 1] = '\n';
-
return
broadcast_meta(from, from->buffer, from->reqlen);
+ broadcast_meta(from, from->buffer, from->reqlen);
}
}
-
int
receive_request(connection_t *c)
+
bool
receive_request(connection_t *c)
{
int request;
{
int request;
@@
-149,49
+138,49
@@
int receive_request(connection_t *c)
if(sscanf(c->buffer, "%d", &request) == 1) {
if((request < 0) || (request >= LAST) || !request_handlers[request]) {
if(sscanf(c->buffer, "%d", &request) == 1) {
if((request < 0) || (request >= LAST) || !request_handlers[request]) {
- if
(debug_level >= DEBUG_
META)
- logger(
DEBUG_ALWAYS,
LOG_DEBUG, _("Unknown request from %s (%s): %s"),
+ if
debug(
META)
+ logger(LOG_DEBUG, _("Unknown request from %s (%s): %s"),
c->name, c->hostname, c->buffer);
else
c->name, c->hostname, c->buffer);
else
- logger(
DEBUG_ALWAYS,
LOG_ERR, _("Unknown request from %s (%s)"),
+ logger(LOG_ERR, _("Unknown request from %s (%s)"),
c->name, c->hostname);
c->name, c->hostname);
- return
-1
;
+ return
false
;
} else {
} else {
- if
(debug_level >= DEBUG_
PROTOCOL) {
- if
(debug_level >= DEBUG_
META)
- logger(
DEBUG_ALWAYS,
LOG_DEBUG, _("Got %s from %s (%s): %s"),
+ if
debug(
PROTOCOL) {
+ if
debug(
META)
+ logger(LOG_DEBUG, _("Got %s from %s (%s): %s"),
request_name[request], c->name, c->hostname,
c->buffer);
else
request_name[request], c->name, c->hostname,
c->buffer);
else
- logger(
DEBUG_ALWAYS,
LOG_DEBUG, _("Got %s from %s (%s)"),
+ logger(LOG_DEBUG, _("Got %s from %s (%s)"),
request_name[request], c->name, c->hostname);
}
}
if((c->allow_request != ALL) && (c->allow_request != request)) {
request_name[request], c->name, c->hostname);
}
}
if((c->allow_request != ALL) && (c->allow_request != request)) {
- logger(
DEBUG_ALWAYS,
LOG_ERR, _("Unauthorized request from %s (%s)"), c->name,
+ logger(LOG_ERR, _("Unauthorized request from %s (%s)"), c->name,
c->hostname);
c->hostname);
- return
-1
;
+ return
false
;
}
}
- if(
request_handlers[request] (c))
+ if(
!request_handlers[request](c)) {
/* Something went wrong. Probably scriptkiddies. Terminate. */
/* Something went wrong. Probably scriptkiddies. Terminate. */
- {
- logger(
DEBUG_ALWAYS,
LOG_ERR, _("Error while processing %s from %s (%s)"),
+
+ logger(LOG_ERR, _("Error while processing %s from %s (%s)"),
request_name[request], c->name, c->hostname);
request_name[request], c->name, c->hostname);
- return
-1
;
+ return
false
;
}
} else {
}
} else {
- logger(
DEBUG_ALWAYS,
LOG_ERR, _("Bogus data received from %s (%s)"),
+ logger(LOG_ERR, _("Bogus data received from %s (%s)"),
c->name, c->hostname);
c->name, c->hostname);
- return
-1
;
+ return
false
;
}
}
- return
0
;
+ return
true
;
}
}
-static int past_request_compare(
past_request_t *a,
past_request_t *b)
+static int past_request_compare(
const past_request_t *a, const
past_request_t *b)
{
return strcmp(a->request, b->request);
}
{
return strcmp(a->request, b->request);
}
@@
-220,23
+209,23
@@
void exit_requests(void)
avl_delete_tree(past_request_tree);
}
avl_delete_tree(past_request_tree);
}
-
int
seen_request(char *request)
+
bool
seen_request(char *request)
{
{
- past_request_t
p, *new
;
+ past_request_t
*new, p = {0}
;
cp();
p.request = request;
if(avl_search(past_request_tree, &p)) {
cp();
p.request = request;
if(avl_search(past_request_tree, &p)) {
-
logger(DEBUG_SCARY_THINGS,
LOG_DEBUG, _("Already seen request"));
- return
1
;
+
ifdebug(SCARY_THINGS) logger(
LOG_DEBUG, _("Already seen request"));
+ return
true
;
} else {
} else {
- new =
(past_request_t *)
xmalloc(sizeof(*new));
+ new = xmalloc(sizeof(*new));
new->request = xstrdup(request);
new->firstseen = now;
avl_insert(past_request_tree, new);
new->request = xstrdup(request);
new->firstseen = now;
avl_insert(past_request_tree, new);
- return
0
;
+ return
false
;
}
}
}
}
@@
-250,7
+239,7
@@
void age_past_requests(void)
for(node = past_request_tree->head; node; node = next) {
next = node->next;
for(node = past_request_tree->head; node; node = next) {
next = node->next;
- p =
(past_request_t *)
node->data;
+ p = node->data;
if(p->firstseen + pingtimeout < now)
avl_delete_node(past_request_tree, node), deleted++;
if(p->firstseen + pingtimeout < now)
avl_delete_node(past_request_tree, node), deleted++;
@@
-259,6
+248,6
@@
void age_past_requests(void)
}
if(left || deleted)
}
if(left || deleted)
-
logger(DEBUG_SCARY_THINGS, LOG_DEBUG, _("Aging past requests: deleted %d, left %d\n
"),
+
ifdebug(SCARY_THINGS) logger(LOG_DEBUG, _("Aging past requests: deleted %d, left %d
"),
deleted, left);
}
deleted, left);
}