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Cleanups.
[tinc]
/
src
/
protocol.c
diff --git
a/src/protocol.c
b/src/protocol.c
index
1460fbf
..
cdf5a31
100644
(file)
--- a/
src/protocol.c
+++ b/
src/protocol.c
@@
-1,6
+1,6
@@
/*
protocol.c -- handle the meta-protocol
/*
protocol.c -- handle the meta-protocol
- Copyright (C) 1999 Ivo Timmermans <zarq@iname.com>
+ Copyright (C) 1999
,2000
Ivo Timmermans <zarq@iname.com>
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
@@
-19,10
+19,14
@@
#include "config.h"
#include "config.h"
+#include <sys/types.h>
+
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <sys/socket.h>
+#include <unistd.h>
+#include <stdio.h>
#include <utils.h>
#include <xalloc.h>
#include <utils.h>
#include <xalloc.h>
@@
-33,261
+37,236
@@
#include "netutl.h"
#include "protocol.h"
#include "netutl.h"
#include "protocol.h"
+char buffer[MAXBUFSIZE+1];
+int buflen;
+
+/* Outgoing request routines */
+
int send_ack(conn_list_t *cl)
{
int send_ack(conn_list_t *cl)
{
- unsigned char tmp = ACK;
-
+cp
if(debug_lvl > 2)
syslog(LOG_DEBUG, "Send ACK to %s", cl->hostname);
if(debug_lvl > 2)
syslog(LOG_DEBUG, "Send ACK to %s", cl->hostname);
- syslog(LOG_NOTICE, "Connection with %s activated.", cl->hostname);
- if((send(cl->meta_socket, &tmp, sizeof(tmp), 0)) < 0)
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d\n", ACK);
+
+ if((write(cl->meta_socket, buffer, buflen)) < 0)
{
syslog(LOG_ERR, "send failed: %d:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %d:%d: %m", __FILE__, __LINE__);
return -1;
}
+ syslog(LOG_NOTICE, "Connection with %s activated.", cl->hostname);
+cp
return 0;
}
int send_termreq(conn_list_t *cl)
{
return 0;
}
int send_termreq(conn_list_t *cl)
{
- termreq_t tmp;
-
- tmp.type = TERMREQ;
- tmp.vpn_ip = myself->vpn_ip;
-
+cp
if(debug_lvl > 2)
if(debug_lvl > 2)
- syslog(LOG_DEBUG, "Send TERMREQ
(" IP_ADDR_S ") to " IP_ADDR_S, IP_ADDR_V(tmp.vpn_ip)
,
+ syslog(LOG_DEBUG, "Send TERMREQ
to " IP_ADDR_S
,
IP_ADDR_V(cl->vpn_ip));
IP_ADDR_V(cl->vpn_ip));
- if((send(cl->meta_socket, &tmp, sizeof(tmp), 0)) < 0)
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx\n", TERMREQ, myself->vpn_ip);
+
+ if((write(cl->meta_socket, buffer, buflen)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
int send_timeout(conn_list_t *cl)
{
return 0;
}
int send_timeout(conn_list_t *cl)
{
- termreq_t tmp;
-
- tmp.type = PINGTIMEOUT;
- tmp.vpn_ip = myself->vpn_ip;
-
+cp
if(debug_lvl > 2)
if(debug_lvl > 2)
- syslog(LOG_DEBUG, "Send TIMEOUT
(" IP_ADDR_S ") to " IP_ADDR_S, IP_ADDR_V(tmp.vpn_ip)
,
+ syslog(LOG_DEBUG, "Send TIMEOUT
to " IP_ADDR_S
,
IP_ADDR_V(cl->vpn_ip));
IP_ADDR_V(cl->vpn_ip));
- if((send(cl->meta_socket, &tmp, sizeof(tmp), 0)) < 0)
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx\n", PINGTIMEOUT, myself->vpn_ip);
+
+ if((write(cl->meta_socket, buffer, buflen)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
int send_del_host(conn_list_t *cl, conn_list_t *new_host)
{
return 0;
}
int send_del_host(conn_list_t *cl, conn_list_t *new_host)
{
- del_host_t tmp;
-
- tmp.type = DEL_HOST;
- tmp.vpn_ip = new_host->vpn_ip;
-
+cp
if(debug_lvl > 2)
if(debug_lvl > 2)
- syslog(LOG_DEBUG, "Sending delete host %lx to " IP_ADDR_S,
- tmp.vpn_ip, IP_ADDR_V(cl->vpn_ip));
+ syslog(LOG_DEBUG, "Sending delete host " IP_ADDR_S " to " IP_ADDR_S,
+ IP_ADDR_V(new_host->vpn_ip), IP_ADDR_V(cl->vpn_ip));
+
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx\n", DEL_HOST, new_host->vpn_ip);
- if((
send(cl->meta_socket, (unsigned char*)&tmp, sizeof(del_host_t), 0
)) < 0)
+ if((
write(cl->meta_socket, buffer, buflen
)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
int send_ping(conn_list_t *cl)
{
return 0;
}
int send_ping(conn_list_t *cl)
{
- unsigned char tmp = PING;
-
+cp
if(debug_lvl > 3)
syslog(LOG_DEBUG, "pinging " IP_ADDR_S, IP_ADDR_V(cl->vpn_ip));
if(debug_lvl > 3)
syslog(LOG_DEBUG, "pinging " IP_ADDR_S, IP_ADDR_V(cl->vpn_ip));
- if((send(cl->meta_socket, &tmp, sizeof(tmp), 0)) < 0)
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d\n", PING);
+
+ if((write(cl->meta_socket, buffer, buflen)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
int send_pong(conn_list_t *cl)
{
return 0;
}
int send_pong(conn_list_t *cl)
{
- unsigned char tmp = PONG;
+cp
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d\n", PONG);
- if((
send(cl->meta_socket, &tmp, sizeof(tmp), 0
)) < 0)
+ if((
write(cl->meta_socket, buffer, buflen
)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
int send_add_host(conn_list_t *cl, conn_list_t *new_host)
{
return 0;
}
int send_add_host(conn_list_t *cl, conn_list_t *new_host)
{
- add_host_t tmp;
-
- tmp.type = ADD_HOST;
- tmp.real_ip = new_host->real_ip;
- tmp.vpn_ip = new_host->vpn_ip;
- tmp.vpn_mask = new_host->vpn_mask;
- tmp.portnr = new_host->port;
-
+cp
if(debug_lvl > 2)
if(debug_lvl > 2)
- syslog(LOG_DEBUG, "Sending add host (%lx/%lx %lx:%hd) to " IP_ADDR_S,
- tmp.vpn_ip, tmp.vpn_mask, tmp.real_ip, tmp.portnr,
+ syslog(LOG_DEBUG, "Sending add host to " IP_ADDR_S,
IP_ADDR_V(cl->vpn_ip));
IP_ADDR_V(cl->vpn_ip));
- if((send(cl->meta_socket, (unsigned char*)&tmp, sizeof(add_host_t), 0)) < 0)
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx %lx/%lx:%x\n", ADD_HOST, new_host->real_ip, new_host->vpn_ip, new_host->vpn_mask, new_host->port);
+
+ if((write(cl->meta_socket, buffer, buflen)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
int send_key_changed(conn_list_t *cl, conn_list_t *src)
{
return 0;
}
int send_key_changed(conn_list_t *cl, conn_list_t *src)
{
- key_changed_t tmp;
-
- tmp.type = KEY_CHANGED;
- tmp.from = src->vpn_ip;
-
+cp
if(debug_lvl > 2)
if(debug_lvl > 2)
- syslog(LOG_DEBUG, "Sending KEY_CHANGED
(%lx)
to " IP_ADDR_S,
-
tmp.from,
IP_ADDR_V(cl->vpn_ip));
+ syslog(LOG_DEBUG, "Sending KEY_CHANGED to " IP_ADDR_S,
+ IP_ADDR_V(cl->vpn_ip));
- if((send(cl->meta_socket, (unsigned char*)&tmp, sizeof(key_changed_t), 0)) < 0)
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx\n", KEY_CHANGED, src->vpn_ip);
+
+ if((write(cl->meta_socket, buffer, buflen)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
return 0;
}
-void send_key_changed
2
(void)
+void send_key_changed
_all
(void)
{
conn_list_t *p;
{
conn_list_t *p;
-
+cp
for(p = conn_list; p != NULL; p = p->next)
if(p->status.meta && p->protocol_version > PROT_3)
send_key_changed(p, myself);
for(p = conn_list; p != NULL; p = p->next)
if(p->status.meta && p->protocol_version > PROT_3)
send_key_changed(p, myself);
+cp
}
int send_basic_info(conn_list_t *cl)
{
}
int send_basic_info(conn_list_t *cl)
{
- basic_info_t tmp;
-
- tmp.type = BASIC_INFO;
- tmp.protocol = PROT_CURRENT;
-
- tmp.portnr = myself->port;
- tmp.vpn_ip = myself->vpn_ip;
- tmp.vpn_mask = myself->vpn_mask;
-
+cp
if(debug_lvl > 2)
if(debug_lvl > 2)
- syslog(LOG_DEBUG, "Send BASIC_INFO(%d,%hd," IP_ADDR_S "," IP_ADDR_S ") to " IP_ADDR_S,
- tmp.protocol, tmp.portnr, IP_ADDR_V(tmp.vpn_ip), IP_ADDR_V(tmp.vpn_mask),
+ syslog(LOG_DEBUG, "Send BASIC_INFO to " IP_ADDR_S,
IP_ADDR_V(cl->real_ip));
IP_ADDR_V(cl->real_ip));
- if((send(cl->meta_socket, &tmp, sizeof(tmp), 0)) < 0)
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d %d %lx/%lx:%x\n", BASIC_INFO, PROT_CURRENT, myself->vpn_ip, myself->vpn_mask, myself->port);
+
+ if((write(cl->meta_socket, buffer, buflen)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
int send_passphrase(conn_list_t *cl)
{
passphrase_t tmp;
return 0;
}
int send_passphrase(conn_list_t *cl)
{
passphrase_t tmp;
-
- tmp.type = PASSPHRASE;
+cp
encrypt_passphrase(&tmp);
if(debug_lvl > 2)
encrypt_passphrase(&tmp);
if(debug_lvl > 2)
- syslog(LOG_DEBUG, "Send PASSPHRASE(%hd,...) to " IP_ADDR_S, tmp.len,
- IP_ADDR_V(cl->vpn_ip));
+ syslog(LOG_DEBUG, "Send PASSPHRASE %s to " IP_ADDR_S,
+ tmp.phrase, IP_ADDR_V(cl->vpn_ip));
+
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d %s\n", PASSPHRASE, tmp.phrase);
- if((
send(cl->meta_socket, &tmp, tmp.len+3, 0
)) < 0)
+ if((
write(cl->meta_socket, buffer, buflen
)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
int send_public_key(conn_list_t *cl)
{
return 0;
}
int send_public_key(conn_list_t *cl)
{
- public_key_t *tmp;
-
- tmp = (public_key_t*)xmalloc(strlen(my_public_key_base36)+sizeof(public_key_t));
- tmp->type = PUBLIC_KEY;
- tmp->len = strlen(my_public_key_base36);
- strcpy(&tmp->key, my_public_key_base36);
-
+cp
if(debug_lvl > 2)
if(debug_lvl > 2)
- syslog(LOG_DEBUG, "Send PUBLIC_KEY
(%hd,%s) to " IP_ADDR_S, tmp->len, &tmp->key
,
- IP_ADDR_V(cl->vpn_ip));
+ syslog(LOG_DEBUG, "Send PUBLIC_KEY
%s to " IP_ADDR_S
,
+
my_public_key_base36,
IP_ADDR_V(cl->vpn_ip));
- if((send(cl->meta_socket, tmp, tmp->len+sizeof(public_key_t), 0)) < 0)
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d %s\n", PUBLIC_KEY, my_public_key_base36);
+
+ if((write(cl->meta_socket, buffer, buflen)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
int send_calculate(conn_list_t *cl, char *k)
{
return 0;
}
int send_calculate(conn_list_t *cl, char *k)
{
- calculate_t *tmp;
-
- tmp = xmalloc(strlen(k)+sizeof(calculate_t));
- tmp->type = CALCULATE;
- tmp->len = strlen(k);
- strcpy(&tmp->key, k);
+cp
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d %s\n", CALCULATE, k);
- if(
send(cl->meta_socket, tmp, tmp->len+4, 0
) < 0)
+ if(
(write(cl->meta_socket, buffer, buflen)
) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
int send_key_request(ip_t to)
{
return 0;
}
int send_key_request(ip_t to)
{
- key_req_t *tmp;
conn_list_t *fw;
conn_list_t *fw;
-
- tmp = xmalloc(sizeof(key_req_t));
- tmp->type = REQ_KEY;
- tmp->to = to;
- tmp->from = myself->vpn_ip;
- tmp->len = 0;
-
+cp
fw = lookup_conn(to);
if(!fw)
{
fw = lookup_conn(to);
if(!fw)
{
@@
-299,39
+278,45
@@
int send_key_request(ip_t to)
if(debug_lvl > 2)
syslog(LOG_DEBUG, "Sending out request for public key to " IP_ADDR_S,
IP_ADDR_V(fw->nexthop->vpn_ip));
if(debug_lvl > 2)
syslog(LOG_DEBUG, "Sending out request for public key to " IP_ADDR_S,
IP_ADDR_V(fw->nexthop->vpn_ip));
- if(send(fw->nexthop->meta_socket, tmp, sizeof(key_req_t), 0) < 0)
+
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx %lx\n", REQ_KEY, to, myself->vpn_ip);
+
+ if((write(fw->nexthop->meta_socket, buffer, buflen)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
fw->status.waitingforkey = 1;
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
fw->status.waitingforkey = 1;
-
+cp
return 0;
}
int send_key_answer(conn_list_t *cl, ip_t to)
{
return 0;
}
int send_key_answer(conn_list_t *cl, ip_t to)
{
- key_req_t *tmp;
conn_list_t *fw;
conn_list_t *fw;
-
- tmp = xmalloc(sizeof(key_req_t)+strlen(my_public_key_base36));
- tmp->type = ANS_KEY;
- tmp->to = to;
- tmp->from = myself->vpn_ip;
- tmp->expiry = my_key_expiry;
- tmp->len = strlen(my_public_key_base36);
- strcpy(&tmp->key, my_public_key_base36);
+cp
fw = lookup_conn(to);
fw = lookup_conn(to);
- if(debug_lvl > 2)
+
+ if(!fw)
+ {
+ syslog(LOG_ERR, "Attempting to send key answer to " IP_ADDR_S ", which does not exist?",
+ IP_ADDR_V(to));
+ return -1;
+ }
+
+ if(debug_lvl > 2)
syslog(LOG_DEBUG, "Sending public key to " IP_ADDR_S,
IP_ADDR_V(fw->nexthop->vpn_ip));
syslog(LOG_DEBUG, "Sending public key to " IP_ADDR_S,
IP_ADDR_V(fw->nexthop->vpn_ip));
- if(send(fw->nexthop->meta_socket, tmp, sizeof(key_req_t)+tmp->len, 0) < 0)
+
+ buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx %lx %d %s\n", ANS_KEY, to, myself->vpn_ip, my_key_expiry, my_public_key_base36);
+
+ if((write(fw->nexthop->meta_socket, buffer, buflen)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
return 0;
}
@@
-344,11
+329,11
@@
int notify_others(conn_list_t *new, conn_list_t *source,
int (*function)(conn_list_t*, conn_list_t*))
{
conn_list_t *p;
int (*function)(conn_list_t*, conn_list_t*))
{
conn_list_t *p;
-
+cp
for(p = conn_list; p != NULL; p = p->next)
for(p = conn_list; p != NULL; p = p->next)
- if(p != new && p != source && p->status.meta
&& p->protocol_version > PROT_3
)
+ if(p != new && p != source && p->status.meta)
function(p, new);
function(p, new);
-
+cp
return 0;
}
return 0;
}
@@
-359,11
+344,11
@@
int notify_others(conn_list_t *new, conn_list_t *source,
int notify_one(conn_list_t *new)
{
conn_list_t *p;
int notify_one(conn_list_t *new)
{
conn_list_t *p;
-
+cp
for(p = conn_list; p != NULL; p = p->next)
if(p != new && p->protocol_version > PROT_3)
send_add_host(new, p);
for(p = conn_list; p != NULL; p = p->next)
if(p != new && p->protocol_version > PROT_3)
send_add_host(new, p);
-
+cp
return 0;
}
return 0;
}
@@
-371,18
+356,18
@@
int notify_one(conn_list_t *new)
The incoming request handlers
*/
The incoming request handlers
*/
-int basic_info_h(conn_list_t *cl
, unsigned char *d, int len
)
+int basic_info_h(conn_list_t *cl)
{
{
- basic_info_t *tmp = (basic_info_t*)d;
-
- cl->protocol_version = tmp->protocol;
-
cl->port = tmp->portnr
;
-
cl->vpn_ip = tmp->vpn_ip
;
- cl->vpn_mask = tmp->vpn_mask;
+cp
+ if(sscanf(cl->buffer, "%*d %d %lx/%lx:%hx", &cl->protocol_version, &cl->vpn_ip, &cl->vpn_mask, &cl->port) != 4)
+ {
+
syslog(LOG_ERR, "got bad BASIC_INFO request: %s", cl->buffer)
;
+
return -1
;
+ }
- if(cl->protocol_version
<
PROT_CURRENT)
+ if(cl->protocol_version
!=
PROT_CURRENT)
{
{
- syslog(LOG_ERR, "Peer uses
protocol version %d which is too ol
d.",
+ syslog(LOG_ERR, "Peer uses
incompatible protocol version %
d.",
cl->protocol_version);
return -1;
}
cl->protocol_version);
return -1;
}
@@
-408,38
+393,44
@@
int basic_info_h(conn_list_t *cl, unsigned char *d, int len)
}
cl->status.active = 0;
}
cl->status.active = 0;
-
+cp
return 0;
}
return 0;
}
-int passphrase_h(conn_list_t *cl
, unsigned char *d, int len
)
+int passphrase_h(conn_list_t *cl)
{
{
- passphrase_t *tmp = (passphrase_t*)d;
-
- cl->pp = xmalloc(tmp->len+3);
- memcpy(cl->pp, tmp, tmp->len+3);
-
+cp
+ cl->pp=xmalloc(sizeof(*(cl->pp)));
+ if(sscanf(cl->buffer, "%*d %as", &(cl->pp->phrase)) != 1)
+ {
+ syslog(LOG_ERR, "got bad PASSPHRASE request: %s", cl->buffer);
+ return -1;
+ }
+ cl->pp->len = strlen(cl->pp->phrase);
+
if(debug_lvl > 2)
if(debug_lvl > 2)
- syslog(LOG_DEBUG, "got PASSPHRASE
(%hd,...)", cl->pp->len
);
+ syslog(LOG_DEBUG, "got PASSPHRASE
"
);
if(cl->status.outgoing)
send_passphrase(cl);
else
send_public_key(cl);
if(cl->status.outgoing)
send_passphrase(cl);
else
send_public_key(cl);
-
+cp
return 0;
}
return 0;
}
-int public_key_h(conn_list_t *cl
, unsigned char *d, int len
)
+int public_key_h(conn_list_t *cl)
{
char *g_n;
{
char *g_n;
- public_key_t *tmp = (public_key_t*)d;
+cp
+ if(sscanf(cl->buffer, "%*d %as", &g_n) != 1)
+ {
+ syslog(LOG_ERR, "got bad PUBLIC_KEY request: %s", cl->buffer);
+ return -1;
+ }
if(debug_lvl > 2)
if(debug_lvl > 2)
- syslog(LOG_DEBUG, "got PUBLIC_KEY(%hd,%s)", tmp->len, &tmp->key);
-
- g_n = xmalloc(tmp->len+1);
- strcpy(g_n, &tmp->key);
+ syslog(LOG_DEBUG, "got PUBLIC_KEY %s", g_n);
if(verify_passphrase(cl, g_n))
{
if(verify_passphrase(cl, g_n))
{
@@
-459,70
+450,63
@@
int public_key_h(conn_list_t *cl, unsigned char *d, int len)
cl->status.active = 1;
notify_others(cl, NULL, send_add_host);
notify_one(cl);
cl->status.active = 1;
notify_others(cl, NULL, send_add_host);
notify_one(cl);
-
+cp
return 0;
}
return 0;
}
-int ack_h(conn_list_t *cl
, unsigned char *d, int len
)
+int ack_h(conn_list_t *cl)
{
{
+cp
if(debug_lvl > 2)
syslog(LOG_DEBUG, "got ACK");
cl->status.active = 1;
syslog(LOG_NOTICE, "Connection with %s activated.", cl->hostname);
if(debug_lvl > 2)
syslog(LOG_DEBUG, "got ACK");
cl->status.active = 1;
syslog(LOG_NOTICE, "Connection with %s activated.", cl->hostname);
-
- /*
- Now I'm going to cheat. The meta protocol is actually
- a stream of requests, that may come in in the same TCP
- packet. This is the only place that it will happen,
- though.
- I may change it in the future, if it appears that this
- is not retainable.
- */
- if(len > 1) /* An ADD_HOST follows */
- {
- if(request_handlers[d[1]] == NULL)
- syslog(LOG_ERR, "Unknown request %d.", d[1]);
- if(request_handlers[d[1]](cl, d, len - 1) < 0)
- return -1;
- }
-
+cp
return 0;
}
return 0;
}
-int termreq_h(conn_list_t *cl
, unsigned char *d, int len
)
+int termreq_h(conn_list_t *cl)
{
{
+cp
syslog(LOG_NOTICE, IP_ADDR_S " wants to quit", IP_ADDR_V(cl->vpn_ip));
cl->status.termreq = 1;
terminate_connection(cl);
notify_others(cl, NULL, send_del_host);
syslog(LOG_NOTICE, IP_ADDR_S " wants to quit", IP_ADDR_V(cl->vpn_ip));
cl->status.termreq = 1;
terminate_connection(cl);
notify_others(cl, NULL, send_del_host);
-
+cp
return 0;
}
return 0;
}
-int timeout_h(conn_list_t *cl
, unsigned char *d, int len
)
+int timeout_h(conn_list_t *cl)
{
{
+cp
syslog(LOG_NOTICE, IP_ADDR_S " says it's gotten a timeout from us", IP_ADDR_V(cl->vpn_ip));
cl->status.termreq = 1;
terminate_connection(cl);
syslog(LOG_NOTICE, IP_ADDR_S " says it's gotten a timeout from us", IP_ADDR_V(cl->vpn_ip));
cl->status.termreq = 1;
terminate_connection(cl);
-
+cp
return 0;
}
return 0;
}
-int del_host_h(conn_list_t *cl
, unsigned char *d, int len
)
+int del_host_h(conn_list_t *cl)
{
{
-
del_host_t *tmp = (del_host_t*)d
;
+
ip_t vpn_ip
;
conn_list_t *fw;
conn_list_t *fw;
+cp
+ if(sscanf(cl->buffer, "%*d %lx", &vpn_ip) != 1)
+ {
+ syslog(LOG_ERR, "got bad DEL_HOST request: %s", cl->buffer);
+ return -1;
+ }
if(debug_lvl > 2)
syslog(LOG_DEBUG, "got DEL_HOST for " IP_ADDR_S,
if(debug_lvl > 2)
syslog(LOG_DEBUG, "got DEL_HOST for " IP_ADDR_S,
- IP_ADDR_V(
tmp->
vpn_ip));
+ IP_ADDR_V(vpn_ip));
- if(!(fw = lookup_conn(
tmp->
vpn_ip)))
+ if(!(fw = lookup_conn(vpn_ip)))
{
syslog(LOG_ERR, "Somebody wanted to delete " IP_ADDR_S " which does not exist?",
{
syslog(LOG_ERR, "Somebody wanted to delete " IP_ADDR_S " which does not exist?",
- IP_ADDR_V(
tmp->
vpn_ip));
+ IP_ADDR_V(vpn_ip));
return 0;
}
return 0;
}
@@
-530,179
+514,244
@@
int del_host_h(conn_list_t *cl, unsigned char *d, int len)
fw->status.termreq = 1;
terminate_connection(fw);
fw->status.termreq = 1;
terminate_connection(fw);
-
+cp
return 0;
}
return 0;
}
-int ping_h(conn_list_t *cl
, unsigned char *d, int len
)
+int ping_h(conn_list_t *cl)
{
{
+cp
if(debug_lvl > 3)
syslog(LOG_DEBUG, "responding to ping from " IP_ADDR_S, IP_ADDR_V(cl->vpn_ip));
cl->status.pinged = 0;
cl->status.got_pong = 1;
send_pong(cl);
if(debug_lvl > 3)
syslog(LOG_DEBUG, "responding to ping from " IP_ADDR_S, IP_ADDR_V(cl->vpn_ip));
cl->status.pinged = 0;
cl->status.got_pong = 1;
send_pong(cl);
-
+cp
return 0;
}
return 0;
}
-int pong_h(conn_list_t *cl
, unsigned char *d, int len
)
+int pong_h(conn_list_t *cl)
{
{
+cp
if(debug_lvl > 3)
syslog(LOG_DEBUG, "ok, got pong from " IP_ADDR_S, IP_ADDR_V(cl->vpn_ip));
cl->status.got_pong = 1;
if(debug_lvl > 3)
syslog(LOG_DEBUG, "ok, got pong from " IP_ADDR_S, IP_ADDR_V(cl->vpn_ip));
cl->status.got_pong = 1;
-
+cp
return 0;
}
return 0;
}
-int add_host_h(conn_list_t *cl
, unsigned char *d, int len
)
+int add_host_h(conn_list_t *cl)
{
{
- add_host_t *tmp = (add_host_t*)d;
+ ip_t real_ip;
+ ip_t vpn_ip;
+ ip_t vpn_mask;
+ unsigned short port;
conn_list_t *ncn, *fw;
conn_list_t *ncn, *fw;
+cp
+ if(sscanf(cl->buffer, "%*d %lx %lx/%lx:%hx", &real_ip, &vpn_ip, &vpn_mask, &port) != 4)
+ {
+ syslog(LOG_ERR, "got bad ADD_HOST request: %s", cl->buffer);
+ return -1;
+ }
if(debug_lvl > 2)
syslog(LOG_DEBUG, "Add host request from " IP_ADDR_S, IP_ADDR_V(cl->vpn_ip));
if(debug_lvl > 3)
syslog(LOG_DEBUG, "got ADD_HOST(" IP_ADDR_S "," IP_ADDR_S ",%hd)",
if(debug_lvl > 2)
syslog(LOG_DEBUG, "Add host request from " IP_ADDR_S, IP_ADDR_V(cl->vpn_ip));
if(debug_lvl > 3)
syslog(LOG_DEBUG, "got ADD_HOST(" IP_ADDR_S "," IP_ADDR_S ",%hd)",
- IP_ADDR_V(
tmp->vpn_ip), IP_ADDR_V(tmp->vpn_mask), tmp->portnr
);
+ IP_ADDR_V(
vpn_ip), IP_ADDR_V(vpn_mask), port
);
/*
Suggestion of Hans Bayle
*/
/*
Suggestion of Hans Bayle
*/
- if((fw = lookup_conn(
tmp->
vpn_ip)))
+ if((fw = lookup_conn(vpn_ip)))
{
notify_others(fw, cl, send_add_host);
return 0;
}
ncn = new_conn_list();
{
notify_others(fw, cl, send_add_host);
return 0;
}
ncn = new_conn_list();
- ncn->real_ip =
tmp->
real_ip;
- ncn->vpn_ip =
tmp->
vpn_ip;
- ncn->vpn_mask =
tmp->
vpn_mask;
- ncn->port =
tmp->portnr
;
- ncn->hostname = hostlookup(
tmp->
real_ip);
+ ncn->real_ip = real_ip;
+ ncn->vpn_ip = vpn_ip;
+ ncn->vpn_mask = vpn_mask;
+ ncn->port =
port
;
+ ncn->hostname = hostlookup(real_ip);
ncn->nexthop = cl;
ncn->next = conn_list;
conn_list = ncn;
ncn->status.active = 1;
notify_others(ncn, cl, send_add_host);
ncn->nexthop = cl;
ncn->next = conn_list;
conn_list = ncn;
ncn->status.active = 1;
notify_others(ncn, cl, send_add_host);
-
- /*
- again, i'm cheating here. see the comment in ack_h.
- */
- if(len > sizeof(add_host_t)) /* Another ADD_HOST follows */
- {
- if(request_handlers[d[sizeof(add_host_t)]] == NULL)
- syslog(LOG_ERR, "Unknown request %d.", d[sizeof(add_host_t)]);
- if(request_handlers[d[sizeof(add_host_t)]](cl, d, len - sizeof(add_host_t)) < 0)
- return -1;
- }
-
+cp
return 0;
}
return 0;
}
-int req_key_h(conn_list_t *cl
, unsigned char *d, int len
)
+int req_key_h(conn_list_t *cl)
{
{
- key_req_t *tmp = (key_req_t*)d;
+ ip_t to;
+ ip_t from;
conn_list_t *fw;
conn_list_t *fw;
+cp
+ if(sscanf(cl->buffer, "%*d %lx %lx", &to, &from) != 2)
+ {
+ syslog(LOG_ERR, "got bad request: %s", cl->buffer);
+ return -1;
+ }
if(debug_lvl > 2)
syslog(LOG_DEBUG, "got REQ_KEY from " IP_ADDR_S " for " IP_ADDR_S,
if(debug_lvl > 2)
syslog(LOG_DEBUG, "got REQ_KEY from " IP_ADDR_S " for " IP_ADDR_S,
- IP_ADDR_V(
tmp->from), IP_ADDR_V(tmp->
to));
+ IP_ADDR_V(
from), IP_ADDR_V(
to));
- if((t
mp->t
o & myself->vpn_mask) == (myself->vpn_ip & myself->vpn_mask))
+ if((to & myself->vpn_mask) == (myself->vpn_ip & myself->vpn_mask))
{ /* hey! they want something from ME! :) */
{ /* hey! they want something from ME! :) */
- send_key_answer(cl,
tmp->
from);
+ send_key_answer(cl, from);
return 0;
}
return 0;
}
- fw = lookup_conn(tmp->to);
+ fw = lookup_conn(to);
+
+ if(!fw)
+ {
+ syslog(LOG_ERR, "Attempting to forward key request to " IP_ADDR_S ", which does not exist?",
+ IP_ADDR_V(to));
+ return -1;
+ }
+
if(debug_lvl > 3)
syslog(LOG_DEBUG, "Forwarding request for public key to " IP_ADDR_S,
IP_ADDR_V(fw->nexthop->vpn_ip));
if(debug_lvl > 3)
syslog(LOG_DEBUG, "Forwarding request for public key to " IP_ADDR_S,
IP_ADDR_V(fw->nexthop->vpn_ip));
- if(send(fw->nexthop->meta_socket, tmp, sizeof(key_req_t), 0) < 0)
+
+ cl->buffer[cl->reqlen-1] = '\n';
+
+ if(write(fw->nexthop->meta_socket, cl->buffer, cl->reqlen) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
return 0;
}
-void set_keys(conn_list_t *cl,
key_req_t *k
)
+void set_keys(conn_list_t *cl,
int expiry, char *key
)
{
char *ek;
{
char *ek;
-
+cp
if(!cl->public_key)
{
if(!cl->public_key)
{
- cl->public_key = xmalloc(sizeof(
enc_key_t
));
+ cl->public_key = xmalloc(sizeof(
*cl->key
));
cl->public_key->key = NULL;
}
cl->public_key->key = NULL;
}
+
if(cl->public_key->key)
free(cl->public_key->key);
if(cl->public_key->key)
free(cl->public_key->key);
- cl->public_key->length =
k->len
;
- cl->public_key->expiry =
k->
expiry;
- cl->public_key->key = xmalloc(
k->len
+ 1);
- strcpy(cl->public_key->key,
&(k->key)
);
+ cl->public_key->length =
strlen(key)
;
+ cl->public_key->expiry = expiry;
+ cl->public_key->key = xmalloc(
cl->public_key->length
+ 1);
+ strcpy(cl->public_key->key,
key
);
- ek = make_shared_key(&(k->key));
+ ek = make_shared_key(key);
+
if(!cl->key)
{
if(!cl->key)
{
- cl->key = xmalloc(sizeof(
enc_key_t
));
+ cl->key = xmalloc(sizeof(
*cl->key
));
cl->key->key = NULL;
}
cl->key->key = NULL;
}
+
if(cl->key->key)
free(cl->key->key);
if(cl->key->key)
free(cl->key->key);
+
cl->key->length = strlen(ek);
cl->key->length = strlen(ek);
- cl->key->expiry =
k->
expiry;
- cl->key->key = xmalloc(
strlen(ek)
+ 1);
+ cl->key->expiry = expiry;
+ cl->key->key = xmalloc(
cl->key->length
+ 1);
strcpy(cl->key->key, ek);
strcpy(cl->key->key, ek);
+cp
}
}
-int ans_key_h(conn_list_t *cl
, unsigned char *d, int len
)
+int ans_key_h(conn_list_t *cl)
{
{
- key_req_t *tmp = (key_req_t*)d;
+ ip_t to;
+ ip_t from;
+ int expiry;
+ char *key;
conn_list_t *fw, *gk;
conn_list_t *fw, *gk;
+cp
+ if(sscanf(cl->buffer, "%*d %lx %lx %d %as", &to, &from, &expiry, &key) != 4)
+ {
+ syslog(LOG_ERR, "got bad ANS_KEY request: %s", cl->buffer);
+ return -1;
+ }
if(debug_lvl > 3)
syslog(LOG_DEBUG, "got ANS_KEY from " IP_ADDR_S " for " IP_ADDR_S,
if(debug_lvl > 3)
syslog(LOG_DEBUG, "got ANS_KEY from " IP_ADDR_S " for " IP_ADDR_S,
- IP_ADDR_V(
tmp->from), IP_ADDR_V(tmp->
to));
+ IP_ADDR_V(
from), IP_ADDR_V(
to));
- if(t
mp->t
o == myself->vpn_ip)
+ if(to == myself->vpn_ip)
{ /* hey! that key's for ME! :) */
if(debug_lvl > 2)
syslog(LOG_DEBUG, "Yeah! key arrived. Now do something with it.");
{ /* hey! that key's for ME! :) */
if(debug_lvl > 2)
syslog(LOG_DEBUG, "Yeah! key arrived. Now do something with it.");
- gk = lookup_conn(tmp->from);
- set_keys(gk, tmp);
+ gk = lookup_conn(from);
+
+ if(!gk)
+ {
+ syslog(LOG_ERR, "Receiving key from " IP_ADDR_S ", which does not exist?",
+ IP_ADDR_V(from));
+ return -1;
+ }
+
+ set_keys(gk, expiry, key);
gk->status.validkey = 1;
gk->status.waitingforkey = 0;
flush_queues(gk);
return 0;
}
gk->status.validkey = 1;
gk->status.waitingforkey = 0;
flush_queues(gk);
return 0;
}
- fw = lookup_conn(tmp->to);
+ fw = lookup_conn(to);
+
+ if(!fw)
+ {
+ syslog(LOG_ERR, "Attempting to forward key to " IP_ADDR_S ", which does not exist?",
+ IP_ADDR_V(to));
+ return -1;
+ }
+
if(debug_lvl > 2)
syslog(LOG_DEBUG, "Forwarding public key to " IP_ADDR_S,
IP_ADDR_V(fw->nexthop->vpn_ip));
if(debug_lvl > 2)
syslog(LOG_DEBUG, "Forwarding public key to " IP_ADDR_S,
IP_ADDR_V(fw->nexthop->vpn_ip));
- if(send(fw->nexthop->meta_socket, tmp, sizeof(key_req_t)+tmp->len, 0) < 0)
+
+ cl->buffer[cl->reqlen-1] = '\n';
+
+ if((write(fw->nexthop->meta_socket, cl->buffer, cl->reqlen)) < 0)
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
{
syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
-
+cp
return 0;
}
return 0;
}
-int key_changed_h(conn_list_t *cl
, unsigned char *d, int len
)
+int key_changed_h(conn_list_t *cl)
{
{
-
key_changed_t *tmp = (key_changed_t*)d
;
+
ip_t from
;
conn_list_t *ik;
conn_list_t *ik;
+cp
+ if(sscanf(cl->buffer, "%*d %lx", &from) != 1)
+ {
+ syslog(LOG_ERR, "got bad ANS_KEY request: %s", cl->buffer);
+ return -1;
+ }
if(debug_lvl > 2)
syslog(LOG_DEBUG, "got KEY_CHANGED from " IP_ADDR_S,
if(debug_lvl > 2)
syslog(LOG_DEBUG, "got KEY_CHANGED from " IP_ADDR_S,
- IP_ADDR_V(tmp->from));
+ IP_ADDR_V(from));
+
+ ik = lookup_conn(from);
+
+ if(!ik)
+ {
+ syslog(LOG_ERR, "Got changed key from " IP_ADDR_S ", which does not exist?",
+ IP_ADDR_V(from));
+ return -1;
+ }
- ik = lookup_conn(tmp->from);
ik->status.validkey = 0;
ik->status.waitingforkey = 0;
ik->status.validkey = 0;
ik->status.waitingforkey = 0;
@@
-710,11
+759,11
@@
int key_changed_h(conn_list_t *cl, unsigned char *d, int len)
syslog(LOG_DEBUG, "Forwarding key invalidation request");
notify_others(cl, ik, send_key_changed);
syslog(LOG_DEBUG, "Forwarding key invalidation request");
notify_others(cl, ik, send_key_changed);
-
+cp
return 0;
}
return 0;
}
-int (*request_handlers[256])(conn_list_t*
, unsigned char*, int
) = {
+int (*request_handlers[256])(conn_list_t*) = {
0, ack_h, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, ack_h, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@
-736,4
+785,3
@@
int (*request_handlers[256])(conn_list_t*, unsigned char*, int) = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
-