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5a910c1d85
openwrt-xburst/package/l2tpd/patches/01-debian-2.patch
nico 6f35f0363b port l2tpd fixes from changeset:2696 to trunk. 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2697 3c298f89-4303-0410-b956-a3cf2f4a3e73
2005-12-16 12:00:19 +00:00

3395 lines
105 KiB
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--- l2tpd-0.70-pre20031121.orig/Makefile
+++ l2tpd-0.70-pre20031121/Makefile
@@ -28,7 +28,8 @@
# become runtime options) debugging flags
#
#DFLAGS= -g -O2 -DDEBUG_PPPD
-DFLAGS= -g -O2 -DDEBUG_PPPD -DDEBUG_CONTROL -DDEBUG_ENTROPY
+#DFLAGS= -g -O2 -Wall -DDEBUG_PPPD -DDEBUG_CONTROL -DDEBUG_ENTROPY
+DFLAGS= -ggdb -Wall -DDEBUG_PPPD -DDEBUG_CONTROL -DDEBUG_ENTROPY
#
# Uncomment the next line for Linux
#
@@ -58,7 +59,7 @@
FFLAGS= -DIP_ALLOCATION
-CFLAGS= $(DFLAGS) -Wall -DSANITY $(OSFLAGS) $(FFLAGS)
+CFLAGS= $(DFLAGS) -Wall -DSANITY $(OSFLAGS) $(FFLAGS)
HDRS=l2tp.h avp.h misc.h control.h call.h scheduler.h file.h aaa.h md5.h
OBJS=l2tpd.o pty.o misc.o control.o avp.o call.o network.o avpsend.o scheduler.o file.o aaa.o md5.o
LIBS= $(OSLIB) # -lefence # efence for malloc checking
--- l2tpd-0.70-pre20031121.orig/control.c
+++ l2tpd-0.70-pre20031121/control.c
@@ -227,7 +227,7 @@
add_bearer_caps_avp (buf, t->ourbc);
/* FIXME: Tie breaker */
add_firmware_avp (buf);
- add_hostname_avp (buf);
+ add_hostname_avp (buf, t);
add_vendor_avp (buf);
add_tunnelid_avp (buf, t->ourtid);
if (t->ourrws >= 0)
@@ -346,7 +346,6 @@
"%s: Peer did not specify assigned tunnel ID. Closing.\n",
__FUNCTION__);
set_error (c, VENDOR_ERROR, "Specify your assigned tunnel ID");
- c->needclose = -1;
return -EINVAL;
}
if (!(t->lns = get_lns (t)))
@@ -356,7 +355,6 @@
"%s: Denied connection to unauthorized peer %s\n",
__FUNCTION__, IPADDY (t->peer.sin_addr));
set_error (c, VENDOR_ERROR, "No Authorization");
- c->needclose = -1;
return -EINVAL;
}
t->ourrws = t->lns->tun_rws;
@@ -368,7 +366,6 @@
"%s: Peer did not specify framing capability. Closing.\n",
__FUNCTION__);
set_error (c, VENDOR_ERROR, "Specify framing capability");
- c->needclose = -1;
return -EINVAL;
}
/* FIXME: Do we need to be sure they specified a version number?
@@ -380,7 +377,6 @@
if (DEBUG) log(LOG_DEBUG,
"%s: Peer did not specify bearer capability. Closing.\n",__FUNCTION__);
set_error(c, VENDOR_ERROR, "Specify bearer capability");
- c->needclose = -1;
return -EINVAL;
} */
if ((!strlen (t->hostname)) && ((t->chal_us.state) || ((t->lns->challenge))))
@@ -390,7 +386,6 @@
"%s: Peer did not specify hostname. Closing.\n",
__FUNCTION__);
set_error (c, VENDOR_ERROR, "Specify your hostname");
- c->needclose = -1;
return -EINVAL;
}
y = tunnels.head;
@@ -427,7 +422,7 @@
add_frame_caps_avp (buf, t->ourfc);
add_bearer_caps_avp (buf, t->ourbc);
add_firmware_avp (buf);
- add_hostname_avp (buf);
+ add_hostname_avp (buf, t);
add_vendor_avp (buf);
add_tunnelid_avp (buf, t->ourtid);
if (t->ourrws >= 0)
@@ -481,7 +476,6 @@
"%s: Peer did not specify framing capability. Closing.\n",
__FUNCTION__);
set_error (c, VENDOR_ERROR, "Specify framing capability");
- c->needclose = -1;
return -EINVAL;
}
/* FIXME: Do we need to be sure they specified a version number?
@@ -493,7 +487,6 @@
if (DEBUG) log(LOG_DEBUG,
"%s: Peer did not specify bearer capability. Closing.\n",__FUNCTION__);
set_error(c, VENDOR_ERROR, "Specify bearer capability");
- c->needclose = -1;
return -EINVAL;
} */
if ((!strlen (t->hostname)) && ((t->chal_them.state) || ((t->chal_us.state))))
@@ -503,7 +496,6 @@
"%s: Peer did not specify hostname. Closing.\n",
__FUNCTION__);
set_error (c, VENDOR_ERROR, "Specify your hostname");
- c->needclose = -1;
return -EINVAL;
}
if (t->tid <= 0)
@@ -513,7 +505,6 @@
"%s: Peer did not specify assigned tunnel ID. Closing.\n",
__FUNCTION__);
set_error (c, VENDOR_ERROR, "Specify your assigned tunnel ID");
- c->needclose = -1;
return -EINVAL;
}
if (t->chal_them.state)
@@ -524,7 +515,6 @@
set_error (c, VENDOR_ERROR, "No secret key on our side");
log (LOG_WARN, "%s: No secret key for authenticating '%s'\n",
__FUNCTION__, t->hostname);
- c->needclose = -1;
return -EINVAL;
}
if (memcmp
@@ -534,7 +524,6 @@
"Invalid challenge authentication");
log (LOG_DEBUG, "%s: Invalid authentication for host '%s'\n",
__FUNCTION__, t->hostname);
- c->needclose = -1;
return -EINVAL;
}
}
@@ -546,7 +535,6 @@
log (LOG_WARN, "%s: No secret for authenticating to '%s'\n",
__FUNCTION__, t->hostname);
set_error (c, VENDOR_ERROR, "No secret key on our end");
- c->needclose = -1;
return -EINVAL;
};
}
@@ -606,7 +594,6 @@
"Invalid challenge authentication");
log (LOG_DEBUG, "%s: Invalid authentication for host '%s'\n",
__FUNCTION__, t->hostname);
- c->needclose = -1;
return -EINVAL;
}
}
@@ -1584,6 +1571,14 @@
wbuf[pos++] = e;
for (x = 0; x < buf->len; x++)
{
+ // we must at least still have 4 bytes left in the worst case scenario:
+ // 1 for a possible escape, 1 for the value and 1 to end the PPP stream.
+ if(pos >= (sizeof(wbuf) - 4)) {
+ if(DEBUG)
+ log(LOG_CRIT, "%s: rx packet is too big after PPP encoding (size %u, max is %u)\n",
+ __FUNCTION__, buf->len, MAX_RECV_SIZE);
+ return -EINVAL;
+ }
e = *((char *) buf->start + x);
if ((e < 0x20) || (e == PPP_ESCAPE) || (e == PPP_FLAG))
{
@@ -1592,7 +1587,6 @@
wbuf[pos++] = PPP_ESCAPE;
}
wbuf[pos++] = e;
-
}
wbuf[pos++] = PPP_FLAG;
x = write (c->fd, wbuf, pos);
--- l2tpd-0.70-pre20031121.orig/misc.h
+++ l2tpd-0.70-pre20031121/misc.h
@@ -80,4 +80,11 @@
extern void safe_copy (char *, char *, int);
extern void opt_destroy (struct ppp_opts *);
extern struct ppp_opts *add_opt (struct ppp_opts *, char *, ...);
+extern u_int16_t get16(u_int8_t *);
+extern u_int32_t get32(u_int8_t *);
+extern u_int64_t get64(u_int8_t *);
+extern void set16(u_int8_t *, u_int16_t);
+extern void set32(u_int8_t *, u_int32_t);
+extern void set64(u_int8_t *, u_int64_t);
+
#endif
--- l2tpd-0.70-pre20031121.orig/avp.h
+++ l2tpd-0.70-pre20031121/avp.h
@@ -19,22 +19,35 @@
struct avp_hdr
{
- _u16 length;
- _u16 vendorid;
- _u16 attr;
+ u_int16_t length;
+ u_int16_t vendorid;
+ u_int16_t attr;
};
+#define AVP_F_MANDATORY 0x1
+#define AVP_F_FIXLEN 0x2
+#define AVP_F_ASCII 0x4
+
struct avp
{
- int num; /* Number of AVP */
- int m; /* Set M? */
- int (*handler) (struct tunnel *, struct call *, void *, int);
- /* This should handle the AVP
- taking a tunnel, call, the data,
- and the length of the AVP as
- parameters. Should return 0
- upon success */
- char *description; /* A name, for debugging */
+ u_int32_t num; /* Number of AVP */
+ u_int32_t flags;
+ u_int32_t sz; /* expected avp payload size as
+ * (AVP_F_FIXLEN) ? (==) : (!>=)
+ * note: size checked is performed
+ * after unhiding */
+ u_int8_t allowed_states[8]; /* List of allowed message types for
+ * a particular avp. Fixed len for
+ * alignement issues. */
+
+ /* This should handle the AVP taking a tunnel, call,
+ * the data, and the length of the AVP as parameters.
+ * Should return 0 upon success */
+ int (*handle) (struct tunnel *, struct call *, void *, int);
+
+ /* This should handle avp specifics sanity checks */
+ int (*validate) (int, struct tunnel *, struct call *, void *, int);
+ char *description; /* A name, for debugging */
};
extern int handle_avps (struct buffer *buf, struct tunnel *t, struct call *c);
@@ -84,8 +97,56 @@
#define RESULT_CLEAR 1
#define RESULT_ERROR 2
#define RESULT_EXISTS 3
+
+/* avp id's */
+#define MESSAGE_TYPE_AVP 0
+#define RESULT_CODE_AVP 1
+#define PROTOCOL_VERSION_AVP 2
+#define FRAMING_CAP_AVP 3
+#define BEARER_CAP_AVP 4
+#define TIE_BREAKER_AVP 5
+#define FIRMWARE_REV_AVP 6
+#define HOSTNAME_AVP 7
+#define VENDOR_NAME_AVP 8
+#define ASSIGNED_TUN_ID_AVP 9
+#define RX_WIN_SIZE_AVP 10
+#define CHALLENGE_AVP 11
+#define CHALLENGE_RESP_AVP 12
+#define CAUSE_ERROR_AVP 13
+#define ASSIGNED_SES_ID_AVP 14
+#define SERIAL_NUMBER_AVP 15
+#define MIN_BPS_AVP 16
+#define MAX_BPS_AVP 17
+#define BEARER_TYPE_AVP 18
+#define FRAMING_TYPE_AVP 19
+#define PACKET_DELAY_AVP 20
+#define CALLED_NUMBER_AVP 21
+#define CALLING_NUMBER_AVP 22
+#define SUB_ADDRESS_AVP 23
+#define TX_CONNECT_SPEED_AVP 24
+#define PHYS_CHAN_ID_AVP 25
+#define INIT_RX_LCP_AVP 26
+#define LAST_TX_LCP_AVP 27
+#define LAST_RX_LCP_AVP 28
+#define PROXY_AUTH_TYPE_AVP 29
+#define PROXY_AUTH_NAME_AVP 30
+#define PROXY_AUTH_CHAL_AVP 31
+#define PROXY_AUTH_ID_AVP 32
+#define PROXY_AUTH_CHAL_RESP_AVP 33
+#define CALL_ERROR_AVP 34
+#define ACCM_AVP 35
+#define RANDOM_VECTOR_AVP 36
+#define PRIV_GROUP_ID_AVP 37
+#define RX_CONNECT_SPEED_AVP 38
+#define SEQ_REQUIRED_AVP 39
+#define AVP_MAX SEQ_REQUIRED_AVP
+
+extern int validate_msgtype_avp(int, struct tunnel *, struct call *, void *, int);
+extern int validate_gen_avp(int, struct tunnel *, struct call *, void *, int);
+
extern void encrypt_avp (struct buffer *, _u16, struct tunnel *);
extern int decrypt_avp (char *, struct tunnel *);
+
extern int message_type_avp (struct tunnel *, struct call *, void *, int);
extern int protocol_version_avp (struct tunnel *, struct call *, void *, int);
extern int framing_caps_avp (struct tunnel *, struct call *, void *, int);
@@ -97,12 +158,12 @@
extern int receive_window_size_avp (struct tunnel *, struct call *, void *,
int);
extern int result_code_avp (struct tunnel *, struct call *, void *, int);
-extern int assigned_call_avp (struct tunnel *, struct call *, void *, int);
+extern int assigned_session_avp (struct tunnel *, struct call *, void *, int);
extern int call_serno_avp (struct tunnel *, struct call *, void *, int);
extern int bearer_type_avp (struct tunnel *, struct call *, void *, int);
extern int call_physchan_avp (struct tunnel *, struct call *, void *, int);
-extern int dialed_number_avp (struct tunnel *, struct call *, void *, int);
-extern int dialing_number_avp (struct tunnel *, struct call *, void *, int);
+extern int called_number_avp (struct tunnel *, struct call *, void *, int);
+extern int calling_number_avp (struct tunnel *, struct call *, void *, int);
extern int sub_address_avp (struct tunnel *, struct call *, void *, int);
extern int frame_type_avp (struct tunnel *, struct call *, void *, int);
extern int rx_speed_avp (struct tunnel *, struct call *, void *, int);
@@ -118,7 +179,7 @@
extern int add_avp_rws (struct buffer *, _u16);
extern int add_tunnelid_avp (struct buffer *, _u16);
extern int add_vendor_avp (struct buffer *);
-extern int add_hostname_avp (struct buffer *);
+extern int add_hostname_avp (struct buffer *, struct tunnel*);
extern int add_firmware_avp (struct buffer *);
extern int add_bearer_caps_avp (struct buffer *buf, _u16 caps);
extern int add_frame_caps_avp (struct buffer *buf, _u16 caps);
--- l2tpd-0.70-pre20031121.orig/network.c
+++ l2tpd-0.70-pre20031121/network.c
@@ -214,6 +214,8 @@
t->self->needclose = -1;
}
}
+ free(buf->rstart);
+ free(buf);
}
else
{
@@ -371,7 +373,9 @@
if (debug_network)
{
log (LOG_DEBUG, "%s: recv packet from %s, size = %d," \
-"tunnel = %d, call = %d\n", __FUNCTION__, inet_ntoa (from.sin_addr), recvsize, tunnel, call);
+ "tunnel = %d, call = %d\n", __func__,
+ inet_ntoa (from.sin_addr), recvsize,
+ tunnel, call);
}
if (packet_dump)
{
--- l2tpd-0.70-pre20031121.orig/aaa.c
+++ l2tpd-0.70-pre20031121/aaa.c
@@ -209,9 +209,11 @@
__FUNCTION__, u, t, s);
#endif
strncpy (secret, s, size);
+ fclose(f);
return -1;
}
}
+ fclose(f);
return 0;
}
--- l2tpd-0.70-pre20031121.orig/l2tpd.c
+++ l2tpd-0.70-pre20031121/l2tpd.c
@@ -266,6 +266,9 @@
/* erase pid file */
unlink (gconfig.pidfile);
+ /* erase control pipe */
+ unlink(CONTROL_PIPE);
+
exit (1);
}
@@ -333,13 +336,17 @@
tcgetattr (c->fd, &ptyconf);
*(c->oldptyconf) = ptyconf;
ptyconf.c_cflag &= ~(ICANON | ECHO);
- ptyconf.c_lflag &= ~ECHO;
+ ptyconf.c_lflag &= ~ECHO;
tcsetattr (c->fd, TCSANOW, &ptyconf);
snprintf (tty, sizeof (tty), "/dev/tty%c%c", a, b);
fd2 = open (tty, O_RDWR);
- stropt[pos++] = strdup(tty);
- stropt[pos] = NULL;
+ if(!fd2)
+ log(LOG_WARN, "unable to open tty %s", tty);
+
+ /* XXX JEF: CHECK ME */
+ stropt[pos++] = strdup(tty);
+ stropt[pos] = NULL;
#ifdef USE_KERNEL
}
@@ -623,7 +630,13 @@
{
struct lac *lac;
lac = (struct lac *) data;
- if (!lac->active)
+
+ if (!lac)
+ {
+ log (LOG_WARN, "%s : called on NULL lac!\n", __FUNCTION__);
+ return;
+ }
+ if (!lac->active)
{
log (LOG_DEBUG, "%s: LAC %s not active", __FUNCTION__, lac->entname);
return;
@@ -635,11 +648,6 @@
log (LOG_LOG, "%s: maximum retries exceeded.\n", __FUNCTION__);
return;
}
- if (!lac)
- {
- log (LOG_WARN, "%s : called on NULL lac!\n", __FUNCTION__);
- return;
- }
if (!lac->t)
{
#ifdef DEGUG_MAGIC
@@ -774,12 +782,7 @@
void do_control ()
{
char buf[1024];
- char *host;
- char *tunstr;
- char *callstr;
-
- char *sub_str; /* jz: use by the strtok function */
- char *tmp_ptr; /* jz: use by the strtok function */
+ char *host, *tunstr, *callstr, *tmpstr;
struct lac *lac;
int call;
int tunl;
@@ -792,24 +795,39 @@
if (buf[cnt - 1] == '\n')
buf[--cnt] = 0;
#ifdef DEBUG_CONTROL
- log (LOG_DEBUG, "%s: Got message %s (%d bytes long)\n",
+ log (LOG_DEBUG, "%s: Got message \"%s\" (%d bytes long)\n",
__FUNCTION__, buf, cnt);
#endif
switch (buf[0])
{
case 't':
- host = strchr (buf, ' ') + 1;
+ host = strchr (buf, ' ');
+ if(!host)
+ goto out;
+ host++;
#ifdef DEBUG_CONTROL
log (LOG_DEBUG, "%s: Attempting to tunnel to %s\n",
__FUNCTION__, host);
#endif
l2tp_call (host, UDP_LISTEN_PORT, NULL, NULL);
break;
- case 'c':
-
- switch_io = 1; /* jz: Switch for Incoming - Outgoing Calls */
-
- tunstr = strchr (buf, ' ') + 1;
+ case 'c': /* option 'c' for incoming call */
+ case 'o': /* option 'o' for outgoing call */
+ tunstr = strchr (buf, ' ');
+ if(!tunstr)
+ goto out;
+ tunstr++;
+
+ if(buf[0] == 'c')
+ switch_io = 1; /* Switch for Incoming Calls */
+ else {
+ switch_io = 0; /* Switch for Outgoing Calls */
+ tmpstr = strchr(tunstr, ' ');
+ if(!tmpstr)
+ goto out;
+ strncpy(dial_no_tmp,tmpstr, sizeof(*dial_no_tmp));
+ }
+
lac = laclist;
while (lac)
{
@@ -842,52 +860,12 @@
#endif
lac_call (tunl, NULL, NULL);
break;
-
- case 'o': /* jz: option 'o' for doing a outgoing call */
-
- switch_io = 0; /* jz: Switch for incoming - outgoing Calls */
-
- sub_str = strchr (buf, ' ') + 1;
-
- tunstr = strtok (sub_str, " "); /* jz: using strtok function to get */
- tmp_ptr = strtok (NULL, " "); /* params out of the pipe */
- strcpy (dial_no_tmp, tmp_ptr);
-
- lac = laclist;
- while (lac)
- {
- if (!strcasecmp (lac->entname, tunstr))
- {
- lac->active = -1;
- lac->rtries = 0;
- if (!lac->c)
- magic_lac_dial (lac);
- else
- log (LOG_DEBUG,
- "%s: Session '%s' already active!\n",
- __FUNCTION__, lac->entname);
- break;
- }
- lac = lac->next;
- }
- if (lac)
- break;
- tunl = atoi (tunstr);
- if (!tunl)
- {
- log (LOG_DEBUG, "%s: No such tunnel '%s'\n", __FUNCTION__,
- tunstr);
- break;
- }
-#ifdef DEBUG_CONTROL
- log (LOG_DEBUG, "%s: Attempting to call on tunnel %d\n",
- __FUNCTION__, tunl);
-#endif
- lac_call (tunl, NULL, NULL);
- break;
-
case 'h':
- callstr = strchr (buf, ' ') + 1;
+ callstr = strchr (buf, ' ');
+ if(!callstr)
+ goto out;
+ callstr++;
+
call = atoi (callstr);
#ifdef DEBUG_CONTROL
log (LOG_DEBUG, "%s: Attempting to call %d\n", __FUNCTION__,
@@ -896,7 +874,11 @@
lac_hangup (call);
break;
case 'd':
- tunstr = strchr (buf, ' ') + 1;
+ tunstr = strchr (buf, ' ');
+ if(!tunstr)
+ goto out;
+ tunstr++;
+
lac = laclist;
while (lac)
{
@@ -937,6 +919,8 @@
}
}
}
+
+out:
/* Otherwise select goes nuts */
close (control_fd);
control_fd = open (CONTROL_PIPE, O_RDONLY | O_NONBLOCK, 0600);
@@ -1002,7 +986,6 @@
int pid=0;
int i,l;
char buf[STRLEN];
- int pidfilewritten=0;
if((pid = fork()) < 0) {
log(LOG_LOG, "%s: Unable to fork ()\n",__FUNCTION__);
@@ -1012,56 +995,52 @@
else if (pid)
exit(0);
- close(0);
- close(1);
- close(2);
+
+ close(0);
+ close(1);
+ close(2);
+ dup2(open("/dev/null", O_RDONLY), 0);
+ dup2(open("/dev/null", O_RDONLY), 1);
+ dup2(open("/dev/null", O_RDONLY), 2);
/* Read previous pid file. */
- if ((i = open(gconfig.pidfile,O_RDONLY)) > 0) {
- l=read(i,buf,sizeof(buf)-1);
- if (i < 0) {
- log(LOG_LOG, "%s: Unable to read pid file [%s]\n",
- __FUNCTION__, gconfig.pidfile);
- }
- buf[i] = '\0';
- pid = atoi(buf);
-
- /* If the previous server process is not still running,
- write a new pid file immediately. */
- if (pid && (pid == getpid () || kill (pid, 0) < 0)) {
- unlink (gconfig.pidfile);
- if ((i = open (gconfig.pidfile, O_WRONLY | O_CREAT, 0640)) >= 0)
- {
- snprintf (buf, sizeof(buf), "%d\n", (int)getpid());
- write (i, buf, strlen(buf));
- close (i);
- pidfilewritten = 1;
- }
+ if((i = open(gconfig.pidfile,O_RDONLY)) > 0) {
+ l=read(i,buf,sizeof(buf)-1);
+ if (l >= 0) {
+ buf[l] = '\0';
+ pid = atoi(buf);
}
- else
- {
+ close(i);
+
+ /* if pid is read and process exist exit */
+ if(pid && !kill(pid, 0)) {
log(LOG_LOG, "%s: There's already a l2tpd server running.\n",
__FUNCTION__);
close(server_socket);
exit(1);
}
+
+ /* remove stalled pid file */
+ unlink(gconfig.pidfile);
}
pid = setsid();
- if(! pidfilewritten) {
- unlink(gconfig.pidfile);
- if ((i = open (gconfig.pidfile, O_WRONLY | O_CREAT, 0640)) >= 0) {
- snprintf (buf, strlen(buf), "%d\n", (int)getpid());
- write (i, buf, strlen(buf));
- close (i);
- pidfilewritten = 1;
- }
- }
+ /* create new pid file */
+ if ((i = open (gconfig.pidfile, O_WRONLY | O_CREAT, 0644)) >= 0) {
+ snprintf (buf, sizeof(buf), "%d", (int)getpid());
+ write (i, buf, strlen(buf));
+ close (i);
+ }
+ else {
+ log(LOG_LOG, "%s: could not write pid file %s error %d",
+ __FUNCTION__, gconfig.pidfile, i);
+ close(server_socket);
+ exit(1);
+ }
}
-
void init (int argc,char *argv[])
{
struct lac *lac;
@@ -1103,10 +1082,6 @@
}
log (LOG_LOG, "l2tpd version " SERVER_VERSION " started on %s PID:%d\n",
hostname, getpid ());
- log (LOG_LOG,
- "Written by Mark Spencer, Copyright (C) 1998, Adtran, Inc.\n");
- log (LOG_LOG, "Forked by Scott Balmos and David Stipp, (C) 2001\n");
- log (LOG_LOG, "Inherited by Jeff McAdams, (C) 2002\n");
listenaddr.s_addr = gconfig.listenaddr;
log (LOG_LOG, "%s version %s on a %s, listening on IP address %s, port %d\n", uts.sysname,
uts.release, uts.machine, inet_ntoa(listenaddr), gconfig.port);
--- l2tpd-0.70-pre20031121.orig/misc.c
+++ l2tpd-0.70-pre20031121/misc.c
@@ -301,3 +301,42 @@
return -1;
}
}
+
+u_int16_t get16(u_int8_t *p) {
+ return p[0] << 8 | p[1];
+}
+
+u_int32_t get32(u_int8_t *p) {
+ return p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
+}
+
+u_int64_t get64(u_int8_t *p) {
+ return (u_int64_t)p[0] << 56 | (u_int64_t)p[1] << 48 |
+ (u_int64_t)p[2] << 40 | (u_int64_t)p[3] << 32 |
+ (u_int64_t)p[4] << 24 | (u_int64_t)p[5] << 16 |
+ (u_int64_t)p[6] << 8 | (u_int64_t)p[7];
+}
+
+void set16(u_int8_t *cp, u_int16_t x) {
+ *cp++ = x >> 8;
+ *cp = x & 0xff;
+}
+
+void set32(u_int8_t *cp, u_int32_t x) {
+ *cp++ = x >> 24;
+ *cp++ = (x >> 16) & 0xff;
+ *cp++ = (x >> 8) & 0xff;
+ *cp = x & 0xff;
+}
+
+void set64(u_int8_t *cp, u_int64_t x) {
+ *cp++ = x >> 56;
+ *cp++ = (x >> 48) & 0xff;
+ *cp++ = (x >> 40) & 0xff;
+ *cp++ = (x >> 32) & 0xff;
+ *cp++ = (x >> 24) & 0xff;
+ *cp++ = (x >> 16) & 0xff;
+ *cp++ = (x >> 8) & 0xff;
+ *cp = x & 0xff;
+}
+
--- l2tpd-0.70-pre20031121.orig/avp.c
+++ l2tpd-0.70-pre20031121/avp.c
@@ -4,9 +4,12 @@
* Layer Two Tunnelling Protocol Daemon
* Copyright (C) 1998 Adtran, Inc.
* Copyright (C) 2002 Jeff McAdams
+ * Copyright (C) 2003 Jean-Francois Dive
*
* Mark Spencer
*
+ * 12/2003 parsing sanitization, Jean-Francois Dive
+ *
* This software is distributed under the terms
* of the GPL, which you should have received
* along with this source.
@@ -20,50 +23,53 @@
#include <netinet/in.h>
#include "l2tp.h"
-#define AVP_MAX 39
+/* TODO:
+ * - Tie breaker.
+ * - Clean Proxy Authentication solution.
+ */
+/*****************************************************************************/
struct avp avps[] = {
-
- {0, 1, &message_type_avp, "Message Type"},
- {1, 1, &result_code_avp, "Result Code"},
- {2, 1, &protocol_version_avp, "Protocol Version"},
- {3, 1, &framing_caps_avp, "Framing Capabilities"},
- {4, 1, &bearer_caps_avp, "Bearer Capabilities"},
- {5, 0, NULL, "Tie Breaker"},
- {6, 0, &firmware_rev_avp, "Firmware Revision"},
- {7, 0, &hostname_avp, "Host Name"},
- {8, 1, &vendor_avp, "Vendor Name"},
- {9, 1, &assigned_tunnel_avp, "Assigned Tunnel ID"},
- {10, 1, &receive_window_size_avp, "Receive Window Size"},
- {11, 1, &challenge_avp, "Challenge"},
- {12, 0, NULL, "Q.931 Cause Code"},
- {13, 1, &chalresp_avp, "Challenge Response"},
- {14, 1, &assigned_call_avp, "Assigned Call ID"},
- {15, 1, &call_serno_avp, "Call Serial Number"},
- {16, 1, NULL, "Minimum BPS"},
- {17, 1, NULL, "Maximum BPS"},
- {18, 1, &bearer_type_avp, "Bearer Type"},
- {19, 1, &frame_type_avp, "Framing Type"},
- {20, 1, &packet_delay_avp, "Packet Processing Delay"},
- {21, 1, &dialed_number_avp, "Dialed Number"},
- {22, 1, &dialing_number_avp, "Dialing Number"},
- {23, 1, &sub_address_avp, "Sub-Address"},
- {24, 1, &tx_speed_avp, "Transmit Connect Speed"},
- {25, 1, &call_physchan_avp, "Physical channel ID"},
- {26, 0, NULL, "Initial Received LCP Confreq"},
- {27, 0, NULL, "Last Sent LCP Confreq"},
- {28, 0, NULL, "Last Received LCP Confreq"},
- {29, 1, &ignore_avp, "Proxy Authen Type"},
- {30, 0, &ignore_avp, "Proxy Authen Name"},
- {31, 0, &ignore_avp, "Proxy Authen Challenge"},
- {32, 0, &ignore_avp, "Proxy Authen ID"},
- {33, 1, &ignore_avp, "Proxy Authen Response"},
- {34, 1, NULL, "Call Errors"},
- {35, 1, &ignore_avp, "ACCM"},
- {36, 1, &rand_vector_avp, "Random Vector"},
- {37, 1, NULL, "Private Group ID"},
- {38, 0, &rx_speed_avp, "Receive Connect Speed"},
- {39, 1, &seq_reqd_avp, "Sequencing Required"}
+ {0, AVP_F_MANDATORY|AVP_F_FIXLEN, 2, {0}, &message_type_avp, &validate_msgtype_avp, "Message Type"},
+ {1, AVP_F_MANDATORY, MAXSTRLEN, {CDN, StopCCN}, &result_code_avp, &validate_gen_avp, "Result Code"},
+ {2, AVP_F_MANDATORY|AVP_F_FIXLEN, 2, {SCCRP, SCCRQ}, &protocol_version_avp, &validate_gen_avp, "Protocol Version"},
+ {3, AVP_F_MANDATORY|AVP_F_FIXLEN, 4, {SCCRP, SCCRQ}, &framing_caps_avp, &validate_gen_avp, "Framing Capabilities"},
+ {4, AVP_F_MANDATORY|AVP_F_FIXLEN, 4, {SCCRP, SCCRQ}, &bearer_caps_avp, &validate_gen_avp, "Bearer Capabilities"},
+ {5, 0, 0, {0}, NULL, NULL, "Tie Breaker"},
+ {6, AVP_F_FIXLEN, 2, {SCCRP, SCCRQ}, &firmware_rev_avp, &validate_gen_avp, "Firmware Revision"},
+ {7, AVP_F_ASCII, MAXSTRLEN, {SCCRP, SCCRQ}, &hostname_avp, &validate_gen_avp, "Host Name"},
+ {8, AVP_F_MANDATORY|AVP_F_ASCII, MAXSTRLEN, {SCCRP, SCCRQ}, &vendor_avp, &validate_gen_avp, "Vendor Name"},
+ {9, AVP_F_MANDATORY|AVP_F_FIXLEN, 2, {SCCRP, SCCRQ, StopCCN}, &assigned_tunnel_avp, &validate_gen_avp, "Assigned Tunnel ID"},
+ {10, AVP_F_MANDATORY|AVP_F_FIXLEN, 2,{SCCRP, SCCRQ, OCRP, OCCN, StopCCN}, &receive_window_size_avp, &validate_gen_avp, "Receive Window Size"},
+ {11, AVP_F_MANDATORY, 128, {SCCRP, SCCRQ}, &challenge_avp, &validate_gen_avp, "Challenge"},
+ {12, 0, 0, {0}, NULL, NULL, "Q.931 Cause Code"},
+ {13, AVP_F_MANDATORY, MD_SIG_SIZE, {SCCRP, SCCCN}, &chalresp_avp, &validate_gen_avp, "Challenge Response"},
+ {14, AVP_F_MANDATORY|AVP_F_FIXLEN, 2, {CDN, ICRP, ICRQ, OCRP, OCRQ}, &assigned_session_avp, &validate_gen_avp, "Assigned Session ID"},
+ {15, AVP_F_MANDATORY|AVP_F_FIXLEN, 4, {ICRQ, OCRQ}, &call_serno_avp, &validate_gen_avp, "Call Serial Number"},
+ {16, AVP_F_MANDATORY|AVP_F_FIXLEN, 4, {0}, NULL, NULL, "Minimum BPS"},
+ {17, AVP_F_MANDATORY|AVP_F_FIXLEN, 4, {0}, NULL, NULL, "Maximum BPS"},
+ {18, AVP_F_MANDATORY|AVP_F_FIXLEN, 4, {ICRQ, OCRQ}, &bearer_type_avp, &validate_gen_avp, "Bearer Type"},
+ {19, AVP_F_MANDATORY|AVP_F_FIXLEN, 4, {ICCN, OCRQ, OCCN}, &frame_type_avp, &validate_gen_avp, "Framing Type"},
+ {20, AVP_F_MANDATORY|AVP_F_FIXLEN, 2, {ICRP, OCRQ, ICCN, OCRP, OCCN}, &packet_delay_avp, &validate_gen_avp, "Packet Processing Delay"},
+ {21, AVP_F_MANDATORY|AVP_F_ASCII, MAXSTRLEN, {ICRQ, OCRQ}, &called_number_avp, &validate_gen_avp, "Called Number"},
+ {22, AVP_F_MANDATORY|AVP_F_ASCII, MAXSTRLEN, {ICRQ}, &calling_number_avp, &validate_gen_avp, "Calling Number"},
+ {23, AVP_F_MANDATORY|AVP_F_ASCII, MAXSTRLEN, {OCRP, ICRQ}, &sub_address_avp, &validate_gen_avp, "Sub-Address"},
+ {24, AVP_F_MANDATORY|AVP_F_FIXLEN, 4, {ICCN, OCCN, OCRP}, &tx_speed_avp, &validate_gen_avp, "Transmit Connect Speed"},
+ {25, AVP_F_MANDATORY|AVP_F_FIXLEN, 4, {ICRQ, OCRQ, OCRP, OCCN}, &call_physchan_avp, &validate_gen_avp, "Physical channel ID"},
+ {26, 0, 0, {0}, NULL, NULL, "Initial Received LCP Confreq"},
+ {27, 0, 0, {0}, NULL, NULL, "Last Sent LCP Confreq"},
+ {28, 0, 0, {0}, NULL, NULL, "Last Received LCP Confreq"},
+ {29, AVP_F_MANDATORY, 0, {0}, &ignore_avp, NULL, "Proxy Authen Type"},
+ {30, 0, 0, {0}, &ignore_avp, NULL, "Proxy Authen Name"},
+ {31, 0, 0, {0}, &ignore_avp, NULL, "Proxy Authen Challenge"},
+ {32, 0, 0, {0}, &ignore_avp, NULL, "Proxy Authen ID"},
+ {33, AVP_F_MANDATORY, 0, {0}, &ignore_avp, NULL, "Proxy Authen Response"},
+ {34, AVP_F_MANDATORY|AVP_F_FIXLEN, 26, {0}, NULL, NULL, "Call Errors"},
+ {35, AVP_F_MANDATORY|AVP_F_FIXLEN, 10, {0}, &ignore_avp, NULL, "ACCM"},
+ {36, AVP_F_MANDATORY, 1024, {0}, &rand_vector_avp, &validate_gen_avp, "Random Vector"},
+ {37, AVP_F_MANDATORY, 0, {0}, NULL, NULL, "Private Group ID"},
+ {38, AVP_F_FIXLEN, 4, {ICCN, OCCN, OCRP}, &rx_speed_avp, &validate_gen_avp, "Receive Connect Speed"},
+ {39, AVP_F_MANDATORY, 0, {ICCN, OCCN, OCRP}, &seq_reqd_avp, &validate_gen_avp, "Sequencing Required"}
};
char *msgtypes[] = {
@@ -111,6 +117,7 @@
"Call was connected but no appropriate framing was detect"
};
+/*****************************************************************************/
void wrong_length (struct call *c, char *field, int expected, int found,
int min)
{
@@ -126,12 +133,9 @@
c->needclose = -1;
}
-/*
- * t, c, data, and datalen may be assumed to be defined for all avp's
- */
-
-int message_type_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+/*****************************************************************************/
+int validate_msgtype_avp(int attr, struct tunnel *t, struct call *c,
+ void *data, int datalen)
{
/*
* This will be with every control message. It is critical that this
@@ -139,28 +143,9 @@
* (assuming sanity check)
*/
- _u16 *raw = data;
- c->msgtype = ntohs (raw[3]);
- if (datalen != 8)
- {
- if (DEBUG)
- log (LOG_DEBUG, "%s: wrong size (%d != 8)\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Message Type", 8, datalen, 0);
- return -EINVAL;
- }
- if ((c->msgtype > MAX_MSG) || (!msgtypes[c->msgtype]))
- {
- if (DEBUG)
- log (LOG_DEBUG, "%s: unknown message type %d\n", __FUNCTION__,
- c->msgtype);
- return -EINVAL;
- }
- if (debug_avp)
- if (DEBUG)
- log (LOG_DEBUG, "%s: message type %d (%s)\n", __FUNCTION__,
- c->msgtype, msgtypes[c->msgtype]);
-#ifdef SANITY
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ c->msgtype = get16(p);
+
if (t->sanity)
{
/*
@@ -172,11 +157,11 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate tunnel inside a call!\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
- switch (c->msgtype)
+ switch (get16(p))
{
case SCCRQ:
if ((t->state != 0) && (t->state != SCCRQ))
@@ -189,7 +174,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate SCCRQ with state != 0\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
break;
@@ -199,7 +184,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate SCCRP with state != SCCRQ!\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
break;
@@ -209,7 +194,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate SCCCN with state != SCCRP!\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
break;
@@ -219,7 +204,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate ICRQ when state != SCCCN\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
if (c != t->self)
@@ -227,7 +212,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate ICRQ on a call!\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
break;
@@ -237,7 +222,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate ICRP on tunnel!=SCCCN\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
if (c->state != ICRQ)
@@ -245,7 +230,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate ICRP when state != ICRQ\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
break;
@@ -255,7 +240,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate ICCN when state != ICRP\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
break;
@@ -265,7 +250,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate SLI when state != ICCN\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
break;
@@ -275,7 +260,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate OCRP on tunnel!=SCCCN\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
if (c->state != OCRQ)
@@ -283,7 +268,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate OCRP when state != OCRQ\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
break;
@@ -294,7 +279,7 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: attempting to negotiate OCCN when state != OCRQ\n",
- __FUNCTION__);
+ __func__);
return -EINVAL;
}
break;
@@ -303,72 +288,33 @@
case Hello:
break;
default:
- log (LOG_WARN, "%s: i don't know how to handle %s messages\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return -EINVAL;
- }
- }
-#endif
- if (c->msgtype == ICRQ)
- {
- struct call *tmp;
- if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG, "%s: new incoming call\n", __FUNCTION__);
- }
- tmp = new_call (t);
- if (!tmp)
- {
- log (LOG_WARN, "%s: unable to create new call\n", __FUNCTION__);
+ log (LOG_WARN, "%s: unknown messages type %d\n",
+ __func__, get16(p));
return -EINVAL;
}
- tmp->next = t->call_head;
- t->call_head = tmp;
- t->count++;
- /*
- * Is this still safe to assume that the head will always
- * be the most recent call being negotiated?
- * Probably... FIXME anyway...
- */
-
}
- return 0;
+ return 0;
}
-int rand_vector_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
-{
- int size;
- _u16 *raw = (_u16 *) data;
- size = (raw[0] & 0x0FFF) - 6;
- if (t->sanity)
- {
- if (size < 0)
- {
- if (DEBUG)
- log (LOG_DEBUG, "%s: Random vector too small (%d < 0)\n",
- __FUNCTION__, size);
- wrong_length (c, "Random Vector", 6, datalen, 1);
- return -EINVAL;
- }
- if (size > MAX_VECTOR_SIZE)
- {
- if (DEBUG)
- log (LOG_DEBUG, "%s: Random vector too large (%d > %d)\n",
- __FUNCTION__, datalen, MAX_VECTOR_SIZE);
- wrong_length (c, "Random Vector", 6, datalen, 1);
- return -EINVAL;
- }
- }
- if (debug_avp)
- log (LOG_DEBUG, "%s: Random Vector of %d octets\n", __FUNCTION__,
- size);
- t->chal_us.vector = (unsigned char *) &raw[3];
- t->chal_us.vector_len = size;
- return 0;
+/*****************************************************************************/
+int validate_gen_avp(int attr, struct tunnel *t, struct call *c,
+ void *data, int datalen) {
+ (void)data; (void)datalen;
+ int i = 0, found = 0;
+
+ if(t->sanity) {
+ for(i = 0; i < 8; i++) {
+ if(c->msgtype == avps[attr].allowed_states[i])
+ found++;
+ }
+ if(!found)
+ return -EINVAL;
+ }
+ return 0;
}
+/* t, c, data, and datalen may be assumed to be defined for all avp's */
+/*****************************************************************************/
int ignore_avp (struct tunnel *t, struct call *c, void *data, int datalen)
{
/*
@@ -383,94 +329,88 @@
*
*/
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG, "%s : Ignoring AVP\n", __FUNCTION__);
- }
+ log (LOG_DEBUG, "%s : Ignoring AVP\n", __func__);
return 0;
}
-int seq_reqd_avp (struct tunnel *t, struct call *c, void *data, int datalen)
+/*****************************************************************************/
+int message_type_avp (struct tunnel *t, struct call *c, void *data,
+ int avplen)
{
-#ifdef SANITY
- if (t->sanity)
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+
+ if(!c->msgtype)
+ c->msgtype = get16(p);
+
+ if ((c->msgtype > MAX_MSG) || (!msgtypes[c->msgtype]))
{
- if (datalen != 6)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is incorrect size. %d != 6\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Sequencing Required", 6, datalen, 1);
- return -EINVAL;
- }
- switch (c->msgtype)
+ log (LOG_DEBUG, "%s: unknown message type %d\n", __func__,
+ c->msgtype);
+ return -EINVAL;
+ }
+ if (debug_avp)
+ log (LOG_DEBUG, "%s: message type %d (%s)\n", __func__,
+ c->msgtype, msgtypes[c->msgtype]);
+ if (c->msgtype == ICRQ)
+ {
+ struct call *tmp;
+ if (debug_avp)
+ log (LOG_DEBUG, "%s: new incoming call\n", __func__);
+ tmp = new_call (t);
+ if (!tmp)
{
- case ICCN:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: sequencing required not appropriate for %s!\n",
- __FUNCTION__, msgtypes[c->msgtype]);
+ log (LOG_WARN, "%s: unable to create new call\n", __func__);
return -EINVAL;
}
+ tmp->next = t->call_head;
+ t->call_head = tmp;
+ t->count++;
+ /*
+ * Is this still safe to assume that the head will always
+ * be the most recent call being negotiated?
+ * Probably... FIXME anyway...
+ */
}
-#endif
+ return 0;
+}
+
+/*****************************************************************************/
+int rand_vector_avp (struct tunnel *t, struct call *c, void *data,
+ int avplen)
+{
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ int datalen = avplen - sizeof(struct avp_hdr);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG, "%s: peer requires sequencing.\n", __FUNCTION__);
- }
+ log (LOG_DEBUG, "%s: random vector len %d\n", __func__, datalen);
+ t->chal_us.vector = (unsigned char *)p;
+ t->chal_us.vector_len = datalen;
+ return 0;
+}
+
+/*****************************************************************************/
+int seq_reqd_avp (struct tunnel *t, struct call *c, void *data, int datalen)
+{
+ if (debug_avp)
+ log (LOG_DEBUG, "%s: peer requires sequencing.\n", __func__);
c->seq_reqd = -1;
return 0;
}
+/*****************************************************************************/
int result_code_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+ int avplen)
{
- /*
- * Find out what version of l2tp the other side is using.
- * I'm not sure what we're supposed to do with this but whatever..
- */
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ int datalen = avplen - sizeof(struct avp_hdr);
+ u_int16_t result = get16(p);
+ u_int16_t error = get16(p + 2);
- int error;
- int result;
- _u16 *raw = data;
-#ifdef SANITY
- if (t->sanity)
- {
- if (datalen < 10)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is incorrect size. %d < 10\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Result Code", 10, datalen, 1);
- return -EINVAL;
- }
- switch (c->msgtype)
- {
- case CDN:
- case StopCCN:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: result code not appropriate for %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- }
-#endif
- result = ntohs (raw[3]);
- error = ntohs (raw[4]);
if ((c->msgtype == StopCCN) && ((result > 7) || (result < 1)))
{
if (DEBUG)
log (LOG_DEBUG,
- "%s: result code out of range (%d %d %d). Ignoring.\n",
- __FUNCTION__, result, error, datalen);
+ "%s: (StopCCN) result code out of range ! (1 < %d < 7)\n",
+ __func__, result);
return 0;
}
@@ -478,1112 +418,348 @@
{
if (DEBUG)
log (LOG_DEBUG,
- "%s: result code out of range (%d %d %d). Ignoring.\n",
- __FUNCTION__, result, error, datalen);
+ "%s: (CDN) result code out of range !(1 < %d < 11)\n",
+ __func__, result);
return 0;
}
c->error = error;
c->result = result;
- safe_copy (c->errormsg, (char *) &raw[5], datalen - 10);
+ memcpy(c->errormsg, (char*)p + 4, datalen - 4);
+ c->errormsg[datalen - 4] = '\0';
+
if (debug_avp)
{
- if (DEBUG && (c->msgtype == StopCCN))
+ if(c->msgtype == StopCCN)
{
log (LOG_DEBUG,
"%s: peer closing for reason %d (%s), error = %d (%s)\n",
- __FUNCTION__, result, stopccn_result_codes[result], error,
+ __func__, result, stopccn_result_codes[result], error,
c->errormsg);
}
else
{
log (LOG_DEBUG,
"%s: peer closing for reason %d (%s), error = %d (%s)\n",
- __FUNCTION__, result, cdn_result_codes[result], error,
+ __func__, result, cdn_result_codes[result], error,
c->errormsg);
}
}
return 0;
}
+/*****************************************************************************/
int protocol_version_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+ int avplen)
{
- /*
- * Find out what version of l2tp the other side is using.
- * I'm not sure what we're supposed to do with this but whatever..
- */
+ u_int8_t *p = data + sizeof(struct avp_hdr);
- int ver;
- _u16 *raw = data;
-#ifdef SANITY
- if (t->sanity)
- {
- if (datalen != 8)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is incorrect size. %d != 8\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Protocol Version", 8, datalen, 1);
- return -EINVAL;
- }
- switch (c->msgtype)
- {
- case SCCRP:
- case SCCRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: protocol version not appropriate for %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- }
-#endif
- ver = ntohs (raw[3]);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: peer is using version %d, revision %d.\n", __FUNCTION__,
- (ver >> 8), ver & 0xFF);
- }
+ log (LOG_DEBUG, "%s: peer is using version %d, revision %d.\n",
+ __func__,*p, *(p+1));
return 0;
}
+/*****************************************************************************/
int framing_caps_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+ int avplen)
{
- /*
- * Retrieve the framing capabilities
- * from the peer
- */
-
- int caps;
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ u_int16_t caps = get16(p + 2);
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case SCCRP:
- case SCCRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: framing capabilities not appropriate for %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 10)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is incorrect size. %d != 10\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Framming Capabilities", 10, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
- caps = ntohs (raw[4]);
if (debug_avp)
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: supported peer frames:%s%s\n", __FUNCTION__,
- caps & ASYNC_FRAMING ? " async" : "",
- caps & SYNC_FRAMING ? " sync" : "");
+ log (LOG_DEBUG, "%s: supported peer frames:%s %s\n", __func__,
+ caps & ASYNC_FRAMING ? "async" : "",
+ caps & SYNC_FRAMING ? "sync" : "");
+
t->fc = caps & (ASYNC_FRAMING | SYNC_FRAMING);
return 0;
}
+/*****************************************************************************/
int bearer_caps_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+ int avplen)
{
- /*
- * What kind of bearer channels does our peer support?
- */
- int caps;
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ u_int16_t caps = get16(p + 2);
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case SCCRP:
- case SCCRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: bearer capabilities not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 10)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is incorrect size. %d != 10\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Bearer Capabilities", 10, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
- caps = ntohs (raw[4]);
if (debug_avp)
- {
- if (DEBUG)
- {
- log (LOG_DEBUG,
- "%s: supported peer bearers:%s%s\n",
- __FUNCTION__,
- caps & ANALOG_BEARER ? " analog" : "",
- caps & DIGITAL_BEARER ? " digital" : "");
- }
+ log (LOG_DEBUG, "%s: supported peer bearers:%s %s\n",
+ __func__,
+ caps & ANALOG_BEARER ? "analog" : "",
+ caps & DIGITAL_BEARER ? "digital" : "");
- }
t->bc = caps & (ANALOG_BEARER | DIGITAL_BEARER);
return 0;
}
-
-/* FIXME: I need to handle tie breakers eventually */
-
+/*****************************************************************************/
int firmware_rev_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+ int avplen)
{
- /*
- * Report and record remote firmware version
- */
- int ver;
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case SCCRP:
- case SCCRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: firmware revision not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 8)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is incorrect size. %d != 8\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Firmware Revision", 8, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
- ver = ntohs (raw[3]);
+ t->firmware = get16(p);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: peer reports firmware version %d (0x%.4x)\n",
- __FUNCTION__, ver, ver);
- }
- t->firmware = ver;
+ log (LOG_DEBUG, "%s: peer reports firmware version %d (0x%.4X)\n",
+ __func__, t->firmware, t->firmware);
return 0;
}
+/*****************************************************************************/
int bearer_type_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+ int avplen)
{
- /*
- * What kind of bearer channel is the call on?
- */
- int b;
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case ICRQ:
- case OCRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: bearer type not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 10)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is incorrect size. %d != 10\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Bearer Type", 10, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
- b = ntohs (raw[4]);
+ t->call_head->bearer = get16(p + 2);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: peer bears:%s\n", __FUNCTION__,
- b & ANALOG_BEARER ? " analog" : "digital");
- }
- t->call_head->bearer = b;
+ log (LOG_DEBUG, "%s: peer bears: %s\n", __func__,
+ (t->call_head->bearer & ANALOG_BEARER) ? "analog" : "digital");
return 0;
}
-int frame_type_avp (struct tunnel *t, struct call *c, void *data, int datalen)
+/*****************************************************************************/
+int frame_type_avp (struct tunnel *t, struct call *c, void *data, int avplen)
{
- /*
- * What kind of frame channel is the call on?
- */
- int b;
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case ICCN:
- case OCRQ:
- case OCCN:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: frame type not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 10)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is incorrect size. %d != 10\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Frame Type", 10, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
- b = ntohs (raw[4]);
+ c->frame = get16(p + 2);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: peer uses:%s frames\n", __FUNCTION__,
- b & ASYNC_FRAMING ? " async" : "sync");
- }
- c->frame = b;
+ log (LOG_DEBUG, "%s: peer uses:%s frames\n", __func__,
+ (c->frame & ASYNC_FRAMING) ? "async" : "sync");
return 0;
}
-int hostname_avp (struct tunnel *t, struct call *c, void *data, int datalen)
+/*****************************************************************************/
+int hostname_avp (struct tunnel *t, struct call *c, void *data, int avplen)
{
- /*
- * What is the peer's name?
- */
- int size;
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ int datalen = avplen - sizeof(struct avp_hdr);
+
+ memcpy(t->hostname, p, datalen);
+ t->hostname[datalen] = '\0';
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case SCCRP:
- case SCCRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: hostname not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen < 6)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is too small. %d < 6\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Hostname", 6, datalen, 1);
- return -EINVAL;
- }
- }
-#endif
- size = raw[0] & 0x0FFF;
- if (size > MAXSTRLEN - 1)
- {
- if (DEBUG)
- log (LOG_DEBUG, "%s: truncating reported hostname (size is %d)\n",
- __FUNCTION__, size);
- size = MAXSTRLEN - 1;
- }
- safe_copy (t->hostname, (char *) &raw[3], size - 6);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: peer reports hostname '%s'\n", __FUNCTION__,
- t->hostname);
- }
+ log (LOG_DEBUG, "%s: peer reports hostname '%s'\n", __func__,
+ t->hostname);
+
return 0;
}
-int dialing_number_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+/*****************************************************************************/
+int calling_number_avp (struct tunnel *t, struct call *c, void *data,
+ int avplen)
{
- /*
- * What is the peer's name?
- */
- int size;
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ int datalen = avplen - sizeof(struct avp_hdr);
+
+ memcpy(t->call_head->dialing, p, datalen);
+ t->call_head->dialing[datalen] = '\0';
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case ICRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: dialing number not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen < 6)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is too small. %d < 6\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Dialing Number", 6, datalen, 1);
- return -EINVAL;
- }
- }
-#endif
- size = raw[0] & 0x0FFF;
- if (size > MAXSTRLEN - 1)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: truncating reported dialing number (size is %d)\n",
- __FUNCTION__, size);
- size = MAXSTRLEN - 1;
- }
- safe_copy (t->call_head->dialing, (char *) &raw[3], size);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: peer reports dialing number '%s'\n", __FUNCTION__,
- t->call_head->dialing);
- }
+ log (LOG_DEBUG, "%s: peer reports dialing number '%s'\n", __func__,
+ t->call_head->dialing);
+
return 0;
}
-int dialed_number_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+/*****************************************************************************/
+int called_number_avp (struct tunnel *t, struct call *c, void *data,
+ int avplen)
{
- /*
- * What is the peer's name?
- */
- int size;
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ int datalen = avplen - sizeof(struct avp_hdr);
+
+ memcpy(t->call_head->dialed, p, datalen);
+ t->call_head->dialed[datalen] = '\0';
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case OCRQ:
- case ICRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: dialed number not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen < 6)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is too small. %d < 6\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Dialed Number", 6, datalen, 1);
- return -EINVAL;
- }
- }
-#endif
- size = raw[0] & 0x0FFF;
- if (size > MAXSTRLEN - 1)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: truncating reported dialed number (size is %d)\n",
- __FUNCTION__, size);
- size = MAXSTRLEN - 1;
- }
- safe_copy (t->call_head->dialed, (char *) &raw[3], size);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: peer reports dialed number '%s'\n", __FUNCTION__,
- t->call_head->dialed);
- }
+ log (LOG_DEBUG, "%s: peer reports dialed number '%s'\n", __func__,
+ t->call_head->dialed);
+
return 0;
}
+/*****************************************************************************/
int sub_address_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+ int avplen)
{
- /*
- * What is the peer's name?
- */
- int size;
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ int datalen = avplen - sizeof(struct avp_hdr);
+
+ memcpy(t->call_head->subaddy, p, datalen);
+ t->call_head->subaddy[datalen] = '\0';
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case OCRP:
- case ICRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: sub_address not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen < 6)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is too small. %d < 6\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Sub-address", 6, datalen, 1);
- return -EINVAL;
- }
- }
-#endif
- size = raw[0] & 0x0FFF;
- if (size > MAXSTRLEN - 1)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: truncating reported sub address (size is %d)\n",
- __FUNCTION__, size);
- size = MAXSTRLEN - 1;
- }
- safe_copy (t->call_head->subaddy, (char *) &raw[3], size);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: peer reports subaddress '%s'\n", __FUNCTION__,
- t->call_head->subaddy);
- }
+ log (LOG_DEBUG, "%s: peer reports subaddress '%s'\n", __func__,
+ t->call_head->subaddy);
return 0;
}
-int vendor_avp (struct tunnel *t, struct call *c, void *data, int datalen)
+/*****************************************************************************/
+int vendor_avp (struct tunnel *t, struct call *c, void *data, int avplen)
{
- /*
- * What vendor makes the other end?
- */
- int size;
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ int datalen = avplen - sizeof(struct avp_hdr);
+
+ memcpy(t->vendor, p, datalen);
+ t->vendor[datalen] = '\0';
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case SCCRP:
- case SCCRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: vendor not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen < 6)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is too small. %d < 6\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Vendor", 6, datalen, 1);
- return -EINVAL;
- }
- }
-#endif
- size = raw[0] & 0x0FFF;
- if (size > MAXSTRLEN - 1)
- {
- if (DEBUG)
- log (LOG_DEBUG, "%s: truncating reported vendor (size is %d)\n",
- __FUNCTION__, size);
- size = MAXSTRLEN - 1;
- }
- safe_copy (t->vendor, (char *) &raw[3], size);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: peer reports vendor '%s'\n", __FUNCTION__, t->vendor);
- }
+ log (LOG_DEBUG, "%s: peer reports vendor '%s'\n", __func__, t->vendor);
return 0;
}
-int challenge_avp (struct tunnel *t, struct call *c, void *data, int datalen)
+/*****************************************************************************/
+int challenge_avp (struct tunnel *t, struct call *c, void *data, int avplen)
{
- /*
- * We are sent a challenge
- */
- _u16 *raw = data;
- int size;
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case SCCRP:
- case SCCRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: challenge not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen < 6)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is too small. %d < 6\n", __FUNCTION__,
- datalen);
- wrong_length (c, "challenge", 6, datalen, 1);
- return -EINVAL;
- }
- }
-#endif
- /* size = raw[0] & 0x0FFF; */
- /* length field of AVP's is only 10 bits long, not 12 */
- size = raw[0] & 0x03FF;
- size -= sizeof (struct avp_hdr);
- /* if (size != MD_SIG_SIZE)
- {
- log (LOG_DEBUG, "%s: Challenge is not the right length (%d != %d)\n",
- __FUNCTION__, size, MD_SIG_SIZE);
- return -EINVAL;
- } */
- t->chal_us.challenge = malloc(size+1);
- if (t->chal_us.challenge == NULL)
- {
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ int datalen = avplen - sizeof(struct avp_hdr);
+
+ t->chal_us.challenge = calloc(datalen, 1);
+ if (!t->chal_us.challenge)
return -ENOMEM;
- }
- memset(t->chal_us.challenge, 0, size+1);
- bcopy (&raw[3], (t->chal_us.challenge), size);
+ memcpy(t->chal_us.challenge, p, datalen);
t->chal_us.state = STATE_CHALLENGED;
+
if (debug_avp)
- {
- log (LOG_DEBUG, "%s: challenge avp found\n", __FUNCTION__);
- }
+ log (LOG_DEBUG, "%s: challenge avp found\n", __func__);
+
return 0;
}
-int chalresp_avp (struct tunnel *t, struct call *c, void *data, int datalen)
+/*****************************************************************************/
+int chalresp_avp (struct tunnel *t, struct call *c, void *data, int avplen)
{
- /*
- * We are sent a challenge
- */
- _u16 *raw = data;
- int size;
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case SCCRP:
- case SCCCN:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: challenge response not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen < 6)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is too small. %d < 6\n", __FUNCTION__,
- datalen);
- wrong_length (c, "challenge", 6, datalen, 1);
- return -EINVAL;
- }
- }
-#endif
- size = raw[0] & 0x0FFF;
- size -= sizeof (struct avp_hdr);
- if (size != MD_SIG_SIZE)
- {
- log (LOG_DEBUG, "%s: Challenge is not the right length (%d != %d)\n",
- __FUNCTION__, size, MD_SIG_SIZE);
- return -EINVAL;
- }
+ u_int8_t *p = data + sizeof(struct avp_hdr);
- bcopy (&raw[3], t->chal_them.reply, MD_SIG_SIZE);
- if (debug_avp)
- {
- log (LOG_DEBUG, "%s: Challenge reply found\n", __FUNCTION__);
- }
+ memcpy(t->chal_them.reply, p, MD_SIG_SIZE);
+ if(debug_avp)
+ log(LOG_DEBUG, "%s: Challenge reply found\n", __func__);
return 0;
}
+/*****************************************************************************/
int assigned_tunnel_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+ int avplen)
{
- /*
- * What is their TID that we must use from now on?
- */
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ u_int16_t id = get16(p);
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case SCCRP:
- case SCCRQ:
- case StopCCN:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: tunnel ID not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 8)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is wrong size. %d != 8\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Assigned Tunnel ID", 8, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
if (c->msgtype == StopCCN)
- {
- t->qtid = ntohs (raw[3]);
- }
+ t->qtid = id;
else
- {
- t->tid = ntohs (raw[3]);
- }
+ t->tid = id;
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: using peer's tunnel %d\n", __FUNCTION__,
- ntohs (raw[3]));
- }
+ log (LOG_DEBUG, "%s: using peer's tunnel %d\n", __func__, id);
return 0;
}
-int assigned_call_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+/*****************************************************************************/
+int assigned_session_avp (struct tunnel *t, struct call *c, void *data,
+ int avplen)
{
- /*
- * What is their CID that we must use from now on?
- */
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
+ u_int16_t id = get16(p);
+
+ switch(c->msgtype) {
+ case CDN:
+ case ICRP:
+ case OCRP:
+ c->cid = id;
+ break;
+ case ICRQ:
+ t->call_head->cid = id;
+ break;
+ };
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case CDN:
- case ICRP:
- case ICRQ:
- case OCRP: /* jz: deleting the debug message */
- break;
- case OCRQ:
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: call ID not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 8)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is wrong size. %d != 8\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Assigned Call ID", 8, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
- if (c->msgtype == CDN)
- {
- c->qcid = ntohs (raw[3]);
- }
- else if (c->msgtype == ICRQ)
- {
- t->call_head->cid = ntohs (raw[3]);
- }
- else if (c->msgtype == ICRP)
- {
- c->cid = ntohs (raw[3]);
- }
- else if (c->msgtype == OCRP)
- { /* jz: copy callid to c->cid */
- c->cid = ntohs (raw[3]);
- }
- else
- {
- log (LOG_DEBUG, "%s: Dunno what to do when it's state %s!\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- }
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: using peer's call %d\n", __FUNCTION__, ntohs (raw[3]));
- }
+ log (LOG_DEBUG, "%s: assigned session id: %d\n", __func__, id);
return 0;
}
+/*****************************************************************************/
int packet_delay_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+ int avplen)
{
- /*
- * What is their CID that we must use from now on?
- */
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case ICRP:
- case OCRQ:
- case ICCN:
- case OCRP:
- case OCCN:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: packet delay not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 8)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is wrong size. %d != 8\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Assigned Call ID", 8, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
- c->ppd = ntohs (raw[3]);
+ c->ppd = get16(p);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: peer's delay is %d 1/10's of a second\n", __FUNCTION__,
- ntohs (raw[3]));
- }
+ log (LOG_DEBUG, "%s: peer's delay is %d 1/10's of a second\n", __func__,
+ c->ppd);
return 0;
}
-int call_serno_avp (struct tunnel *t, struct call *c, void *data, int datalen)
+/*****************************************************************************/
+int call_serno_avp (struct tunnel *t, struct call *c, void *data, int avplen)
{
/*
* What is the serial number of the call?
*/
- _u16 *raw = data;
-
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case ICRQ:
- case OCRQ:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: call ID not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 10)
- {
-#ifdef STRICT
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is wrong size. %d != 10\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Serial Number", 10, datalen, 0);
- return -EINVAL;
-#else
- log (LOG_DEBUG,
- "%s: peer is using old style serial number. Will be invalid.\n",
- __FUNCTION__);
-#endif
+ u_int8_t *p = data + sizeof(struct avp_hdr);
- }
- }
-#endif
- t->call_head->serno = (((unsigned int) ntohs (raw[3])) << 16) |
- ((unsigned int) ntohs (raw[4]));
+ t->call_head->serno = get32(p);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: serial number is %d\n", __FUNCTION__,
- t->call_head->serno);
- }
+ log (LOG_DEBUG, "%s: serial number is %d\n", __func__,
+ t->call_head->serno);
return 0;
}
-int rx_speed_avp (struct tunnel *t, struct call *c, void *data, int datalen)
+/*****************************************************************************/
+int rx_speed_avp (struct tunnel *t, struct call *c, void *data, int avplen)
{
- /*
- * What is the received baud rate of the call?
- */
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case ICCN:
- case OCCN:
- case OCRP:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: rx connect speed not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 10)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is wrong size. %d != 10\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Connect Speed (RX)", 10, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
- c->rxspeed = (((unsigned int) ntohs (raw[3])) << 16) |
- ((unsigned int) ntohs (raw[4]));
- if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: receive baud rate is %d\n", __FUNCTION__, c->rxspeed);
- }
+ c->rxspeed = get32(p);
+ if(debug_avp)
+ log(LOG_DEBUG, "%s: receive baud rate is %d\n", __func__, c->rxspeed);
return 0;
}
-int tx_speed_avp (struct tunnel *t, struct call *c, void *data, int datalen)
+/*****************************************************************************/
+int tx_speed_avp (struct tunnel *t, struct call *c, void *data, int avplen)
{
- /*
- * What is the tranmsit baud rate of the call?
- */
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case ICCN:
- case OCCN:
- case OCRP:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: tx connect speed not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 10)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is wrong size. %d != 10\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Connect Speed (tx)", 10, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
- c->txspeed = (((unsigned int) ntohs (raw[3])) << 16) |
- ((unsigned int) ntohs (raw[4]));
+ c->txspeed = get32(p);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: transmit baud rate is %d\n", __FUNCTION__, c->txspeed);
- }
+ log (LOG_DEBUG, "%s: transmit baud rate is %d\n",
+ __func__, c->txspeed);
return 0;
}
+
+/*****************************************************************************/
int call_physchan_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+ int avplen)
{
- /*
- * What is the physical channel?
- */
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case ICRQ:
- case OCRQ:
- case OCRP:
- case OCCN:
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: physical channel not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 10)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is wrong size. %d != 10\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Physical Channel", 10, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
- t->call_head->physchan = (((unsigned int) ntohs (raw[3])) << 16) |
- ((unsigned int) ntohs (raw[4]));
+ t->call_head->physchan = get32(p);
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: physical channel is %d\n", __FUNCTION__,
- t->call_head->physchan);
- }
+ log(LOG_DEBUG, "%s: physical channel is %d\n", __func__,
+ t->call_head->physchan);
return 0;
}
+/*****************************************************************************/
int receive_window_size_avp (struct tunnel *t, struct call *c, void *data,
- int datalen)
+ int avplen)
{
- /*
- * What is their RWS?
- */
- _u16 *raw = data;
+ u_int8_t *p = data + sizeof(struct avp_hdr);
-#ifdef SANITY
- if (t->sanity)
- {
- switch (c->msgtype)
- {
- case SCCRP:
- case SCCRQ:
- case OCRP: /* jz */
- case OCCN: /* jz */
- case StopCCN:
-/* case ICRP:
- case ICCN: */
- break;
- default:
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: RWS not appropriate for message %s. Ignoring.\n",
- __FUNCTION__, msgtypes[c->msgtype]);
- return 0;
- }
- if (datalen != 8)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: avp is wrong size. %d != 8\n", __FUNCTION__,
- datalen);
- wrong_length (c, "Receive Window Size", 8, datalen, 0);
- return -EINVAL;
- }
- }
-#endif
- t->rws = ntohs (raw[3]);
+ t->rws = get16(p);
/* if (c->rws >= 0)
c->fbit = FBIT; */
if (debug_avp)
- {
- if (DEBUG)
- log (LOG_DEBUG,
- "%s: peer wants RWS of %d. Will use flow control.\n",
- __FUNCTION__, t->rws);
- }
+ log (LOG_DEBUG, "%s: peer wants RWS of %d. Will use flow control.\n",
+ __func__, t->rws);
return 0;
}
+/*****************************************************************************/
int handle_avps (struct buffer *buf, struct tunnel *t, struct call *c)
{
/*
@@ -1594,82 +770,100 @@
struct avp_hdr *avp;
int len = buf->len - sizeof (struct control_hdr);
+ u_int16_t rlen = 0;
+ u_int16_t attr = 0;
int firstavp = -1;
- int hidlen;
+ int hidlen = 0;
char *data = buf->start + sizeof (struct control_hdr);
avp = (struct avp_hdr *) data;
+
if (debug_avp)
log (LOG_DEBUG, "%s: handling avp's for tunnel %d, call %d\n",
- __FUNCTION__, t->ourtid, c->ourcid);
+ __func__, t->ourtid, c->ourcid);
+
+ if(len < 6) {
+ log (LOG_WARN, "%s: packet too small\n", __func__);
+ set_error(c, ERROR_LENGTH, "Invalid message length");
+ return -EINVAL;
+ }
+
while (len > 0)
{
- /* Go ahead and byte-swap the header */
- swaps (avp, sizeof (struct avp_hdr));
- if (avp->attr > AVP_MAX)
+ rlen = get16((u_int8_t*)&avp->length);
+ attr = get16((u_int8_t*)&avp->attr);
+
+ /* AVP header checks */
+ if (attr > AVP_MAX)
{
- if (AMBIT (avp->length))
+ if (AMBIT(rlen))
{
log (LOG_WARN,
- "%s: dont know how to handle mandatory attribute %d. Closing %s.\n"
- __FUNCTION__, avp->attr,
- (c != t->self) ? "call" : "tunnel");
- set_error (c, VENDOR_ERROR,
- "mandatory attribute %d cannot be handled",
- avp->attr);
- c->needclose = -1;
+ "%s: unhandeled mandatory attribute %d. Closing %s.\n",
+ __func__, attr, (c != t->self) ? "call" : "tunnel");
+ set_error (c, VENDOR_ERROR,
+ "mandatory attribute %d cannot be handled", attr);
return -EINVAL;
}
else
{
if (DEBUG)
log (LOG_WARN,
- "%s: dont know how to handle atribute %d.\n",
- __FUNCTION__, avp->attr);
+ "%s: handeled attribute %d.\n",
+ __func__, attr);
goto next;
}
}
- if (ALENGTH (avp->length) > len)
+ if (ALENGTH (rlen) > len)
{
log (LOG_WARN,
- "%s: AVP received with length > remaining packet length!\n",
- __FUNCTION__);
+ "%s: AVP reported length > remaining packet length\n",
+ __func__);
set_error (c, ERROR_LENGTH, "Invalid AVP length");
- c->needclose = -1;
return -EINVAL;
}
- if (avp->attr && firstavp)
+ if (ALENGTH (rlen) < sizeof (struct avp_hdr))
{
- log (LOG_WARN, "%s: First AVP was not message type.\n",
- __FUNCTION__);
- set_error (c, VENDOR_ERROR, "First AVP must be message type");
- c->needclose = -1;
+ log (LOG_WARN, "%s: AVP reported length too small (%d).\n",
+ __func__, ALENGTH (rlen));
+ set_error (c, ERROR_LENGTH, "AVP too small");
return -EINVAL;
}
- if (ALENGTH (avp->length) < sizeof (struct avp_hdr))
+ if (avps[attr].sz) {
+ if((avps[attr].flags & AVP_F_FIXLEN) ?
+ (ALENGTH(rlen) - sizeof(struct avp_hdr)) != avps[attr].sz :
+ (ALENGTH(rlen) - sizeof(struct avp_hdr)) > avps[attr].sz) {
+ log (LOG_DEBUG, "%s: %s avp size mismatch (%d %s %d)\n",
+ __func__,
+ avps[attr].description,
+ (avps[attr].flags & AVP_F_FIXLEN) ? "!=" : "<",
+ ALENGTH(rlen), avps[attr].sz);
+ set_error (c, ERROR_LENGTH, "AVP size check failed");
+ return -EINVAL;
+ }
+ }
+ if (attr && firstavp)
{
- log (LOG_WARN, "%s: AVP with too small of size (%d).\n",
- __FUNCTION__, ALENGTH (avp->length));
- set_error (c, ERROR_LENGTH, "AVP too small");
- c->needclose = -1;
+ log (LOG_WARN, "%s: First AVP was not message type.\n",
+ __func__);
+ set_error (c, VENDOR_ERROR, "First AVP must be message type");
return -EINVAL;
}
- if (AZBITS (avp->length))
+ if (AZBITS (rlen))
{
- log (LOG_WARN, "%s: %sAVP has reserved bits set.\n", __FUNCTION__,
- AMBIT (avp->length) ? "Mandatory " : "");
- if (AMBIT (avp->length))
+ log (LOG_WARN, "%s: %sAVP has reserved bits set.\n", __func__,
+ AMBIT (rlen) ? "Mandatory " : "");
+ if (AMBIT (rlen))
{
set_error (c, ERROR_RESERVED, "reserved bits set in AVP");
- c->needclose = -1;
return -EINVAL;
}
goto next;
}
- if (AHBIT (avp->length))
+
+ /* decryption */
+ if (AHBIT (rlen))
{
-#ifdef DEBUG_HIDDEN
- log (LOG_DEBUG, "%s: Hidden bit set on AVP.\n", __FUNCTION__);
-#endif
+ log (LOG_DEBUG, "%s: Hidden bit set on AVP.\n", __func__);
/* We want to rewrite the AVP as an unhidden AVP
and then pass it along as normal. Remeber how
long the AVP was in the first place though! */
@@ -1678,12 +872,11 @@
{
if (debug_avp)
log (LOG_WARN, "%s: Unable to handle hidden %sAVP\n:",
- __FUNCTION__,
- (AMBIT (avp->length) ? "mandatory " : ""));
- if (AMBIT (avp->length))
+ __func__,
+ (AMBIT (rlen) ? "mandatory " : ""));
+ if (AMBIT (rlen))
{
set_error (c, VENDOR_ERROR, "Invalid Hidden AVP");
- c->needclose = -1;
return -EINVAL;
}
goto next;
@@ -1696,17 +889,43 @@
}
else
hidlen = 0;
- if (avps[avp->attr].handler)
+
+ /* validate */
+ if (avps[attr].validate)
+ {
+ if(avps[attr].validate(attr, t, c, avp, ALENGTH (rlen))) {
+ if (AMBIT (rlen))
+ {
+ log (LOG_WARN,
+ "%s: verification of AVP %d (%s) failed.\n",
+ __func__, attr,
+ avps[attr].description);
+ set_error (c, VENDOR_ERROR, "processing failed on mandatory AVP");
+ return -EINVAL;
+ }
+ else
+ {
+ if (DEBUG)
+ log (LOG_DEBUG,
+ "%s: Bad exit status handling attribute %d (%s).\n",
+ __func__, attr,
+ avps[attr].description);
+ }
+ }
+ }
+
+ /* handling */
+ if (avps[attr].handle)
{
- if (avps[avp->attr].handler (t, c, avp, ALENGTH (avp->length)))
+ if (avps[attr].handle(t, c, avp, ALENGTH (rlen)))
{
- if (AMBIT (avp->length))
+ if (AMBIT (rlen))
{
log (LOG_WARN,
- "%s: Bad exit status handling attribute %d (%s) on mandatory packet.\n",
- __FUNCTION__, avp->attr,
- avps[avp->attr].description);
- c->needclose = -1;
+ "%s: Bad exit status handling mandatory attribute %d (%s).\n",
+ __func__, attr,
+ avps[attr].description);
+ set_error (c, VENDOR_ERROR, "processing failed on mandatory AVP");
return -EINVAL;
}
else
@@ -1714,29 +933,31 @@
if (DEBUG)
log (LOG_DEBUG,
"%s: Bad exit status handling attribute %d (%s).\n",
- __FUNCTION__, avp->attr,
- avps[avp->attr].description);
+ __func__, attr,
+ avps[attr].description);
}
}
}
else
{
- if (AMBIT (avp->length))
+ if (AMBIT (rlen))
{
log (LOG_WARN,
"%s: No handler for mandatory attribute %d (%s). Closing %s.\n",
- __FUNCTION__, avp->attr, avps[avp->attr].description,
+ __func__, attr,
+ avps[attr].description,
(c != t->self) ? "call" : "tunnel");
set_error (c, VENDOR_ERROR, "No handler for attr %d (%s)\n",
- avp->attr, avps[avp->attr].description);
+ attr,
+ avps[attr].description);
return -EINVAL;
}
else
{
if (DEBUG)
log (LOG_WARN, "%s: no handler for atribute %d (%s).\n",
- __FUNCTION__, avp->attr,
- avps[avp->attr].description);
+ __func__, attr,
+ avps[attr].description);
}
}
next:
@@ -1748,16 +969,17 @@
}
else
{
- len -= ALENGTH (avp->length);
- data += ALENGTH (avp->length); /* Next AVP, please */
+ len -= ALENGTH (rlen);
+ data += ALENGTH (rlen); /* Next AVP, please */
}
avp = (struct avp_hdr *) data;
firstavp = 0;
}
if (len != 0)
{
- log (LOG_WARN, "%s: negative overall packet length\n", __FUNCTION__);
+ log (LOG_WARN, "%s: negative overall packet length\n", __func__);
return -EINVAL;
}
+
return 0;
}
--- l2tpd-0.70-pre20031121.orig/avpsend.c
+++ l2tpd-0.70-pre20031121/avpsend.c
@@ -1,11 +1,5 @@
/*
- * $Id$
- *
- * Layer Two Tunnelling Protocol Daemon
- * Copyright (C) 1998 Adtran, Inc.
- * Copyright (C) 2002 Jeff McAdams
- *
- * Mark Spencer
+ * Copyright (C) 2004 Jean-Francois Dive
*
* This software is distributed under the terms
* of the GPL, which you should have received
@@ -14,337 +8,288 @@
* Attribute Value Pair creating routines
*/
+/* TODO: Handle Tie break */
+/* TODO: Get real hostname / config */
+/* TODO: There should be an overflow check on
+ * the buffer size. (safe for now as
+ * packet size = 4k
+ */
+
#include <stdlib.h>
#include <string.h>
-#include <netinet/in.h>
+#include <unistd.h>
#include "l2tp.h"
-/*
- * These routines should add avp's to a buffer
- * to be sent
- */
+extern struct avp avps[];
+/* We could add here padding support which would allow
+ * to keep alignemnt straight <jdive> */
+static int add_avp(struct buffer *buf, u_int32_t avpid, unsigned char *v,
+ u_int32_t sz, u_int8_t setpayload) {
+ u_int8_t *p = buf->start + buf->len;
+
+ if(avpid > AVP_MAX || !avps[avpid].flags) {
+ log(LOG_DEBUG, "%s: invalid avp id %d\n", __func__, avpid);
+ return 1;
+ }
+
+ set16(p, (sz + 6) | (avps[avpid].flags & AVP_F_MANDATORY ? MBIT : 0));
+ set16(p + 2, VENDOR_ID);
+ set16(p + 4, avpid);
+ if(setpayload)
+ memcpy(p + 6, v, sz);
-/* FIXME: If SANITY is on, we should check for buffer overruns */
+ buf->len += (sz + 6);
+ return 0;
+}
-/* FIXME: Can't this be condensed alot? */
+/*****************************************************************************/
+int add_message_type_avp(struct buffer *buf, _u16 type) {
+ u_int8_t t[2];
+ set16(t, type);
+ if(add_avp(buf, MESSAGE_TYPE_AVP, t, 2, 1))
+ return 1;
+ return 0;
+}
-int add_message_type_avp (struct buffer *buf, _u16 type)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0x8 | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = 0;
- raw[3] = htons (type);
- buf->len += 8;
+/*****************************************************************************/
+int add_protocol_avp(struct buffer *buf) {
+ u_int8_t t[2];
+ set16(t, OUR_L2TP_VERSION);
+ if(add_avp(buf, PROTOCOL_VERSION_AVP, t, 2, 1))
+ return 1;
return 0;
}
-int add_protocol_avp (struct buffer *buf)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0x8 | MBIT); /* Length and M bit */
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x2); /* Value of our AVP */
- raw[3] = htons (OUR_L2TP_VERSION);
- buf->len += 8;
+/*****************************************************************************/
+int add_frame_caps_avp(struct buffer *buf, _u16 caps) {
+ u_int8_t t[4];
+ t[0] = 0;
+ t[1] = 0;
+ set16(&t[2], caps);
+ if(add_avp(buf, FRAMING_CAP_AVP, t, 4, 1))
+ return 1;
return 0;
}
-int add_frame_caps_avp (struct buffer *buf, _u16 caps)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0xA | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x3);
- raw[3] = 0;
- raw[4] = htons (caps);
- buf->len += 10;
+/*****************************************************************************/
+int add_bearer_caps_avp(struct buffer *buf, _u16 caps) {
+ u_int8_t t[4];
+ t[0] = 0;
+ t[1] = 0;
+ set16(&t[2], caps);
+ if(add_avp(buf, BEARER_CAP_AVP, t, 4, 1))
+ return 1;
return 0;
}
-int add_bearer_caps_avp (struct buffer *buf, _u16 caps)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0xA | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x4);
- raw[3] = 0;
- raw[4] = htons (caps);
- buf->len += 10;
+/*****************************************************************************/
+int add_firmware_avp(struct buffer *buf) {
+ u_int8_t t[2];
+ set16(t, OUR_L2TP_VERSION);
+ if(add_avp(buf, FIRMWARE_REV_AVP, t, 2, 1))
+ return 1;
return 0;
}
-/* FIXME: I need to send tie breaker AVP's */
-
-int add_firmware_avp (struct buffer *buf)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0x8);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x6);
- raw[3] = htons (FIRMWARE_REV);
- buf->len += 8;
+/*****************************************************************************/
+int add_hostname_avp(struct buffer *buf, struct tunnel *t) {
+ char n[STRLEN];
+ int sz = 0;
+ if(t->lac && t->lac->hostname[0]) {
+ strncpy(n,t->lac->hostname, sizeof(n));
+ sz = strnlen(t->lac->hostname, sizeof(t->lac->hostname));
+ }
+ else if(t->lns && t->lns->hostname[0]) {
+ strncpy(n,t->lns->hostname, sizeof(n));
+ sz = strnlen(t->lns->hostname, sizeof(t->lns->hostname));
+ }
+ else {
+ if(gethostname(n, STRLEN)) {
+ strcpy(n,"eriwan");
+ sz = 6;
+ }
+ else
+ sz = strnlen(n, sizeof(n));
+ }
+ if(add_avp(buf, HOSTNAME_AVP, n, sz, 1))
+ return 1;
return 0;
}
-/*
-int add_hostname_avp(struct buffer *buf) {
- _u16 *raw = (_u16 *)(buf->start + buf->len);
- raw[0] = htons((0x6 + strlen(hostname)) | MBIT);
- raw[1] = htons(VENDOR_ID);
- raw[2] = htons(0x7);
- strcpy((char *)(&raw[3]), hostname);
- buf->len += 6 + strlen(hostname);
- return 0;
+/*****************************************************************************/
+int add_vendor_avp(struct buffer *buf) {
+ if(add_avp(buf, VENDOR_NAME_AVP, VENDOR_NAME, strlen(VENDOR_NAME), 1))
+ return 1;
+ return 0;
}
-*/
-int add_hostname_avp (struct buffer *buf)
-{
- char names[6] = "eriwan";
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0xC | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x7);
- strcpy ((char *) (&raw[3]), names);
- buf->len += 12;
- return 0;
-}
-
-int add_vendor_avp (struct buffer *buf)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0x6 + strlen (VENDOR_NAME));
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x8);
- strcpy ((char *) (&raw[3]), VENDOR_NAME);
- buf->len += 6 + strlen (VENDOR_NAME);
- return 0;
-}
-
-int add_tunnelid_avp (struct buffer *buf, _u16 tid)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0x8 | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x9);
- raw[3] = htons (tid);
- buf->len += 8;
- return 0;
-}
-
-int add_avp_rws (struct buffer *buf, _u16 rws)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0x8 | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0xA);
- raw[3] = htons (rws);
- buf->len += 8;
- return 0;
-}
-
-int add_challenge_avp (struct buffer *buf, char *c, int len)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons ((0x6 + len) | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0xB);
- bcopy (c, (char *) (&raw[3]), len);
- buf->len += 6 + len;
- return 0;
-}
-
-int add_chalresp_avp (struct buffer *buf, char *c, int len)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons ((0x6 + len) | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0xD);
- bcopy (c, (char *) (&raw[3]), len);
- buf->len += 6 + len;
- return 0;
-}
-
-int add_randvect_avp (struct buffer *buf, char *c, int len)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons ((0x6 + len) | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x24);
- bcopy (c, (char *) (&raw[3]), len);
- buf->len += 6 + len;
- return 0;
-}
-
-int add_result_code_avp (struct buffer *buf, _u16 result, _u16 error,
- char *msg, int len)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons ((0xA + len) | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x1);
- raw[3] = htons (result);
- raw[4] = htons (error);
- bcopy (msg, (char *) &raw[5], len);
- buf->len += (10 + len);
+/*****************************************************************************/
+int add_tunnelid_avp(struct buffer *buf, _u16 tid) {
+ u_int8_t t[2];
+ set16(t, tid);
+ if(add_avp(buf, ASSIGNED_TUN_ID_AVP, t, 2, 1))
+ return 1;
return 0;
}
+/*****************************************************************************/
+int add_avp_rws(struct buffer *buf, _u16 rws) {
+ u_int8_t t[2];
+ set16(t, rws);
+ if(add_avp(buf, RX_WIN_SIZE_AVP, t, 2, 1))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_challenge_avp(struct buffer *buf, char *c, int len) {
+ if(add_avp(buf, CHALLENGE_AVP, c, len, 1))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_chalresp_avp(struct buffer *buf, char *c, int len) {
+ if(add_avp(buf, CHALLENGE_RESP_AVP, c, len, 1))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_randvect_avp(struct buffer *buf, char *c, int len) {
+ if(add_avp(buf, RANDOM_VECTOR_AVP, c, len, 1))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_result_code_avp(struct buffer *buf, _u16 result, _u16 error,
+ char *msg, int len) {
+ u_int8_t t[4];
+ set16(t, result);
+ set16(&t[2], error);
+ memcpy((u_int8_t*)(buf->start + buf->len + 10), msg, len);
+ memcpy((u_int8_t*)(buf->start + buf->len + 6), t, 4);
+ if(add_avp(buf, RESULT_CODE_AVP, 0, 4 + len, 0))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
#ifdef TEST_HIDDEN
-int add_callid_avp (struct buffer *buf, _u16 callid, struct tunnel *t)
-{
-#else
-int add_callid_avp (struct buffer *buf, _u16 callid)
-{
-#endif
- _u16 *raw = (_u16 *) (buf->start + buf->len);
-#ifdef TEST_HIDDEN
+int add_callid_avp(struct buffer *buf, _u16 callid, struct tunnel *t) {
+ u_int8_t t[2];
if (t->hbit)
raw++;
-#endif
- raw[0] = htons (0x8 | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0xE);
- raw[3] = htons (callid);
- buf->len += 8;
-#ifdef TEST_HIDDEN
+ set16(t, callid);
+ if(add_avp(buf, ASSIGNED_SES_ID_AVP, t, 2, 1))
+ return 1;
if (t->hbit)
encrypt_avp (buf, 8, t);
+ return 0;
+}
+#else
+int add_callid_avp(struct buffer *buf, _u16 callid) {
+ u_int8_t t[2];
+ set16(t, callid);
+ if(add_avp(buf, ASSIGNED_SES_ID_AVP, t, 2, 1))
+ return 1;
+ return 0;
+}
#endif
+
+/*****************************************************************************/
+int add_serno_avp(struct buffer *buf, unsigned int serno) {
+ u_int8_t t[4];
+ set32(t, serno);
+ if(add_avp(buf, SERIAL_NUMBER_AVP, t, 4, 1))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_bearer_avp(struct buffer *buf, int bearer) {
+ u_int8_t t[4];
+ set32(t, bearer);
+ if(add_avp(buf, BEARER_TYPE_AVP, t, 4, 1))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_frame_avp(struct buffer *buf, int frame) {
+ u_int8_t t[4];
+ set32(t, frame);
+ if(add_avp(buf, FRAMING_TYPE_AVP, t, 4, 1))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_txspeed_avp(struct buffer *buf, int speed) {
+ u_int8_t t[4];
+ set32(t, speed);
+ if(add_avp(buf, TX_CONNECT_SPEED_AVP, t, 4, 1))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_rxspeed_avp(struct buffer *buf, int speed) {
+ u_int8_t t[4];
+ set32(t, speed);
+ if(add_avp(buf, RX_CONNECT_SPEED_AVP, t, 4, 1))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_physchan_avp(struct buffer *buf, unsigned int physchan) {
+ u_int8_t t[4];
+ set32(t, physchan);
+ if(add_avp(buf, PHYS_CHAN_ID_AVP, t, 4, 1))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_ppd_avp(struct buffer *buf, _u16 ppd) {
+ u_int8_t t[2];
+ set16(t, ppd);
+ if(add_avp(buf, PACKET_DELAY_AVP, t, 2, 1))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_seqreqd_avp(struct buffer *buf) {
+ if(add_avp(buf, SEQ_REQUIRED_AVP, 0, 0, 0))
+ return 1;
+ return 0;
+}
+
+/*****************************************************************************/
+int add_minbps_avp(struct buffer *buf, int speed) {
+ u_int8_t t[4];
+ set32(t, speed);
+ if(add_avp(buf, MIN_BPS_AVP, t, 4, 1))
+ return 1;
return 0;
}
-int add_serno_avp (struct buffer *buf, unsigned int serno)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0xA | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0xF);
- raw[3] = htons ((serno >> 16) & 0xFFFF);
- raw[4] = htons (serno & 0xFFFF);
- buf->len += 10;
- return 0;
-}
-
-int add_bearer_avp (struct buffer *buf, int bearer)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0xA | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x12);
- raw[3] = htons ((bearer >> 16) & 0xFFFF);
- raw[4] = htons (bearer & 0xFFFF);
- buf->len += 10;
- return 0;
-}
-
-int add_frame_avp (struct buffer *buf, int frame)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0xA | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x13);
- raw[3] = htons ((frame >> 16) & 0xFFFF);
- raw[4] = htons (frame & 0xFFFF);
- buf->len += 10;
- return 0;
-}
-
-int add_txspeed_avp (struct buffer *buf, int speed)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0xA | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x18);
- raw[3] = htons ((speed >> 16) & 0xFFFF);
- raw[4] = htons (speed & 0xFFFF);
- buf->len += 10;
- return 0;
-}
-
-int add_rxspeed_avp (struct buffer *buf, int speed)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0xA | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x26);
- raw[3] = htons ((speed >> 16) & 0xFFFF);
- raw[4] = htons (speed & 0xFFFF);
- buf->len += 10;
- return 0;
-}
-
-int add_physchan_avp (struct buffer *buf, unsigned int physchan)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0x8 | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x19);
- raw[3] = htons ((physchan >> 16) & 0xFFFF);
- raw[4] = htons (physchan & 0xFFFF);
- buf->len += 10;
- return 0;
-}
-
-int add_ppd_avp (struct buffer *buf, _u16 ppd)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0x8 | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x14);
- raw[3] = htons (ppd);
- buf->len += 8;
- return 0;
-}
-
-int add_seqreqd_avp (struct buffer *buf)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0x6 | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x27);
- buf->len += 6;
- return 0;
-}
-
-/* jz: options dor the outgoing call */
-
-/* jz: Minimum BPS - 16 */
-int add_minbps_avp (struct buffer *buf, int speed)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0xA | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x10);
- raw[3] = htons ((speed >> 16) & 0xFFFF);
- raw[4] = htons (speed & 0xFFFF);
- buf->len += 10;
- return 0;
-}
-
-/* jz: Maximum BPS - 17 */
-int add_maxbps_avp (struct buffer *buf, int speed)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons (0xA | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x11);
- raw[3] = htons ((speed >> 16) & 0xFFFF);
- raw[4] = htons (speed & 0xFFFF);
- buf->len += 10;
- return 0;
-}
-
-/* jz: Dialed Number 21 */
-int add_number_avp (struct buffer *buf, char *no)
-{
- _u16 *raw = (_u16 *) (buf->start + buf->len);
- raw[0] = htons ((0x6 + strlen (no)) | MBIT);
- raw[1] = htons (VENDOR_ID);
- raw[2] = htons (0x15);
- strncpy ((char *) (&(raw[3])), no, strlen (no));
- buf->len += 6 + strlen (no);
+/*****************************************************************************/
+int add_maxbps_avp(struct buffer *buf, int speed) {
+ u_int8_t t[4];
+ set32(t, speed);
+ if(add_avp(buf, MAX_BPS_AVP, t, 4, 1))
+ return 1;
return 0;
}
+
+/*****************************************************************************/
+int add_number_avp(struct buffer *buf, char *no) {
+ if(add_avp(buf, CALLED_NUMBER_AVP, no, strlen(no), 1))
+ return 1;
+ return 0;
+}
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