patches for easier mirroring, to eliminate a special copy, to make www.freebsd.org/security a full copy of security.freebsd.org and be eventually be the same. For now files are just sitting there. The symlinks are missing. Discussed on: www (repository location) Discussed with: simon (so)
93 lines
2.5 KiB
Diff
93 lines
2.5 KiB
Diff
Index: contrib/telnet/telnet/telnet.c
|
|
===================================================================
|
|
RCS file: /home/ncvs/src/contrib/telnet/telnet/telnet.c,v
|
|
retrieving revision 1.15
|
|
diff -u -r1.15 telnet.c
|
|
--- contrib/telnet/telnet/telnet.c 28 Feb 2005 12:46:53 -0000 1.15
|
|
+++ contrib/telnet/telnet/telnet.c 23 Mar 2005 19:10:31 -0000
|
|
@@ -1326,6 +1326,7 @@
|
|
}
|
|
|
|
unsigned char slc_reply[128];
|
|
+unsigned char const * const slc_reply_eom = &slc_reply[sizeof(slc_reply)];
|
|
unsigned char *slc_replyp;
|
|
|
|
void
|
|
@@ -1341,6 +1342,14 @@
|
|
void
|
|
slc_add_reply(unsigned char func, unsigned char flags, cc_t value)
|
|
{
|
|
+ /* A sequence of up to 6 bytes my be written for this member of the SLC
|
|
+ * suboption list by this function. The end of negotiation command,
|
|
+ * which is written by slc_end_reply(), will require 2 additional
|
|
+ * bytes. Do not proceed unless there is sufficient space for these
|
|
+ * items.
|
|
+ */
|
|
+ if (&slc_replyp[6+2] > slc_reply_eom)
|
|
+ return;
|
|
if ((*slc_replyp++ = func) == IAC)
|
|
*slc_replyp++ = IAC;
|
|
if ((*slc_replyp++ = flags) == IAC)
|
|
@@ -1354,6 +1363,9 @@
|
|
{
|
|
int len;
|
|
|
|
+ /* The end of negotiation command requires 2 bytes. */
|
|
+ if (&slc_replyp[2] > slc_reply_eom)
|
|
+ return;
|
|
*slc_replyp++ = IAC;
|
|
*slc_replyp++ = SE;
|
|
len = slc_replyp - slc_reply;
|
|
@@ -1471,8 +1483,8 @@
|
|
}
|
|
}
|
|
|
|
-#define OPT_REPLY_SIZE 256
|
|
-unsigned char *opt_reply;
|
|
+#define OPT_REPLY_SIZE (2 * SUBBUFSIZE)
|
|
+unsigned char *opt_reply = NULL;
|
|
unsigned char *opt_replyp;
|
|
unsigned char *opt_replyend;
|
|
|
|
@@ -1525,9 +1537,9 @@
|
|
return;
|
|
}
|
|
vp = env_getvalue(ep);
|
|
- if (opt_replyp + (vp ? strlen((char *)vp) : 0) +
|
|
- strlen((char *)ep) + 6 > opt_replyend)
|
|
- {
|
|
+ if (opt_replyp + (vp ? 2 * strlen((char *)vp) : 0) +
|
|
+ 2 * strlen((char *)ep) + 6 > opt_replyend)
|
|
+ {
|
|
int len;
|
|
opt_replyend += OPT_REPLY_SIZE;
|
|
len = opt_replyend - opt_reply;
|
|
@@ -1551,6 +1563,8 @@
|
|
*opt_replyp++ = ENV_USERVAR;
|
|
for (;;) {
|
|
while ((c = *ep++)) {
|
|
+ if (opt_replyp + (2 + 2) > opt_replyend)
|
|
+ return;
|
|
switch(c&0xff) {
|
|
case IAC:
|
|
*opt_replyp++ = IAC;
|
|
@@ -1565,6 +1579,8 @@
|
|
*opt_replyp++ = c;
|
|
}
|
|
if ((ep = vp)) {
|
|
+ if (opt_replyp + (1 + 2 + 2) > opt_replyend)
|
|
+ return;
|
|
#ifdef OLD_ENVIRON
|
|
if (telopt_environ == TELOPT_OLD_ENVIRON)
|
|
*opt_replyp++ = old_env_value;
|
|
@@ -1595,7 +1611,9 @@
|
|
{
|
|
int len;
|
|
|
|
- len = opt_replyp - opt_reply + 2;
|
|
+ if (opt_replyp + 2 > opt_replyend)
|
|
+ return;
|
|
+ len = opt_replyp + 2 - opt_reply;
|
|
if (emptyok || len > 6) {
|
|
*opt_replyp++ = IAC;
|
|
*opt_replyp++ = SE;
|