Displaying 20 results from an estimated 25 matches for "maxfdp".
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maxfd
2001 Aug 02
0
patch: properly zeroing fd_set in clientloop
...nels.h~ Wed Jun 13 15:18:05 2001
+++ channels.h Thu Jul 12 08:31:58 2001
@@ -168,6 +168,13 @@
void channel_free(int channel);
/*
+ * Zero out a select file-descriptor set. Analogous to the FD_ZERO
+ * macro, but works with different-sized sets.
+ */
+void
+channel_zero_set(fd_set *setp, int maxfdp);
+
+/*
* Allocate/update select bitmasks and add any bits relevant to channels in
* select bitmasks.
*/
--- channels.c~ Wed Jun 13 15:18:05 2001
+++ channels.c Thu Jul 12 08:32:53 2001
@@ -1160,6 +1160,14 @@
}
void
+channel_zero_set(fd_set *setp, int maxfdp)
+{
+ u_int sz = howmany(maxf...
2003 Sep 15
1
SCO 3.2v4.2 and OpenSSH -current --> connection hangs and does no t close
...2
debug2: channel 0: ibuf empty
debug2: channel 0: send eof
debug2: channel 0: input drain -> closed
-------------------
I have tried my hand at gdb, and this is the output and backtrace
before the session hangs.
(gdb)
wait_until_can_do_something (readsetp=0x7ffff8e4, writesetp=0x7ffff8e0,
maxfdp=0x7ffff8dc, nallocp=0x7ffff8d8, max_time_milliseconds=0)
at serverloop.c:313
313 if (child_terminated &&
packet_not_very_much_data_to_write())
(gdb)
317 if (max_time_milliseconds == 0)
(gdb)
318 tvp = NULL;
(gdb)
326 ret = select((...
2001 Oct 11
0
[patch] option to prevent connection timeout
...etherlands
------------------------------oOO--(_)--OOo------------------
--- openssh-2.9.9p2/clientloop.c.orig Tue Sep 18 07:51:14 2001
+++ openssh-2.9.9p2/clientloop.c Thu Oct 11 22:03:09 2001
@@ -320,6 +320,9 @@
client_wait_until_can_do_something(fd_set **readsetp, fd_set **writesetp,
int *maxfdp, int *nallocp, int rekeying)
{
+ struct timeval tv;
+ int n;
+
/* Add any selections by the channel mechanism. */
channel_prepare_select(readsetp, writesetp, maxfdp, nallocp, rekeying);
@@ -364,7 +367,24 @@
* SSH_MSG_IGNORE packet when the timeout expires.
*/
- if (select((*maxfdp)+1...
2001 Mar 14
1
[PATCH] Added Null packet keepalive option
...0;
if (options->compression_level == -1)
options->compression_level = 6;
if (options->port == -1)
--- clientloop.c 2001/03/06 03:34:40 1.36
+++ clientloop.c 2001/03/14 19:11:21
@@ -365,6 +365,10 @@
client_wait_until_can_do_something(fd_set **readsetp, fd_set **writesetp,
int *maxfdp)
{
+ struct timeval tv = {0};
+ tv.tv_sec = options.noop_msg_frequency;
+ /* Send a noop message at this frequency as a keepalive. */
+
/* Add any selections by the channel mechanism. */
channel_prepare_select(readsetp, writesetp, maxfdp);
@@ -403,7 +407,8 @@
* SSH_MSG_IGNORE packet when...
2003 Sep 17
3
[Bug 651] SCO 3.2v4.2 and OpenSSH 3.7.1p1 --> connection hangs and does not close (ssh2 only)
...0: read 0 from efd 12
debug2: channel 0: closing read-efd 12
debug2: channel 0: ibuf empty
debug2: channel 0: send eof
debug2: channel 0: input drain -> closed
--->hangs<---
--------------------------------------------
below is a backtrace from gdb:
(gdb) s
326 ret = select((*maxfdp)+1, *readsetp, *writesetp, NULL, tvp);
(gdb) l
321 tv.tv_usec = 1000 * (max_time_milliseconds % 1000);
322 tvp = &tv;
323 }
324
325 /* Wait for something to happen, or the timeout to expire. */
326 ret = select((*maxfdp...
2003 Sep 15
0
SCO 3.2v4.2 and OpenSSH -current --> connection hangs and does n o t close
...now, but it may have
> disagreeable results.
>
> - Ben
>
Commented out the
#define signal (a,b) mysignal(a,b)
in bsd-misc.h,
recompiled ( make clean && make )
still the same problem exists:
(gdb)
wait_until_can_do_something (readsetp=0x7ffff8e4, writesetp=0x7ffff8e0,
maxfdp=0x7ffff8dc, nallocp=0x7ffff8d8, max_time_milliseconds=0)
at serverloop.c:313
313 if (child_terminated &&
packet_not_very_much_data_to_write())
(gdb)
317 if (max_time_milliseconds == 0)
(gdb)
318 tvp = NULL;
(gdb)
326 ret = select((...
2001 May 18
0
PATCH: implement delay (sleep) after last tunnelled connection exits
...ssionStatus {SessionOpen, SessionClose, SessionWait};
+static int session_status = SessionOpen; /* In SSH2: login session closed. */
void client_init_dispatch(void);
int session_ident = -1;
@@ -324,6 +324,10 @@
client_wait_until_can_do_something(fd_set **readsetp, fd_set **writesetp,
int *maxfdp, int rekeying)
{
+ struct timeval timer;
+ struct timeval *timerp;
+ int rc;
+
/* Add any selections by the channel mechanism. */
channel_prepare_select(readsetp, writesetp, maxfdp, rekeying);
@@ -346,7 +350,15 @@
if (buffer_len(&stderr_buffer) > 0)
FD_SET(fileno(stderr), *wri...
2002 Jan 27
0
[PATCH] Add an exit delay to Openssh-3.0.2p1 for use in tunneling
...atus {SessionOpen, SessionClose, SessionWait};
+static int session_status = SessionOpen; /* In SSH2: login session closed. */
static void client_init_dispatch(void);
int session_ident = -1;
@@ -320,6 +322,10 @@
client_wait_until_can_do_something(fd_set **readsetp, fd_set **writesetp,
int *maxfdp, int *nallocp, int rekeying)
{
+ struct timeval timer;
+ struct timeval *timerp;
+ int rc;
+
/* Add any selections by the channel mechanism. */
channel_prepare_select(readsetp, writesetp, maxfdp, nallocp, rekeying);
@@ -343,7 +349,7 @@
FD_SET(fileno(stderr), *writesetp);
} else {
/...
2005 Mar 03
3
ssh hang problem under solaris 8
...e backtrace output can help to
analyse the problem....
is it a solaris problem ?
Greetings
Frank
sshd:
#0 0xff19d618 in _poll () from /usr/lib/libc.so.1
#1 0xff14d53c in select () from /usr/lib/libc.so.1
#2 0x000339a0 in wait_until_can_do_something (readsetp=0xffbee5dc,
writesetp=0xffbee5d8, maxfdp=0xffbee5d4,
nallocp=0xffbee5d0, max_time_milliseconds=0) at serverloop.c:325
#3 0x00034d6c in server_loop2 (authctxt=0x123ac8) at serverloop.c:776
#4 0x0003ae0c in do_authenticated (authctxt=0x123ac8) at session.c:2265
#5 0x0002ea78 in main (ac=1161216, av=0x11f288) at sshd.c:1719
ssh:
(gdb...
2001 Sep 26
1
[PATCH] random SSH_MSG_IGNORE packets
...diff -ur openssh-2.9p2/clientloop.c openssh-2.9p2.servalive/clientloop.c
--- openssh-2.9p2/clientloop.c Fri Apr 20 14:50:51 2001
+++ openssh-2.9p2.servalive/clientloop.c Wed Sep 26 12:58:38 2001
@@ -324,6 +324,9 @@
client_wait_until_can_do_something(fd_set **readsetp, fd_set **writesetp,
int *maxfdp, int rekeying)
{
+ struct timeval tv, *tvp = &tv;
+ int ret;
+
/* Add any selections by the channel mechanism. */
channel_prepare_select(readsetp, writesetp, maxfdp, rekeying);
@@ -356,13 +359,29 @@
/*
* Wait for something to happen. This will suspend the process until
* some s...
2001 Nov 09
4
keystroke timing attack
I'm reading this fine article on O'Reilly:
http://linux.oreillynet.com/lpt/a//linux/2001/11/08/ssh_keystroke.html
<quote>
The paper concludes that the keystroke timing data observable from
today's SSH implementations reveals a dangerously significant amount of
information about user terminal sessions--enough to locate typed
passwords in the session data stream and reduce the
2001 Sep 28
1
[PATCH] fix for Linux hang on exit bug in 2.9.9p2
...atus {SessionOpen, SessionClose, SessionWait};
+static int session_status = SessionOpen; /* In SSH2: login session closed. */
static void client_init_dispatch(void);
int session_ident = -1;
@@ -320,6 +322,10 @@
client_wait_until_can_do_something(fd_set **readsetp, fd_set **writesetp,
int *maxfdp, int *nallocp, int rekeying)
{
+ struct timeval timer;
+ struct timeval *timerp;
+ int rc;
+
/* Add any selections by the channel mechanism. */
channel_prepare_select(readsetp, writesetp, maxfdp, nallocp, rekeying);
@@ -343,11 +349,12 @@
FD_SET(fileno(stderr), *writesetp);
} else {...
2001 Nov 14
6
[PATCH]: Patch to fix hang on exit bug under Linux and add optional exit delay
...atus {SessionOpen, SessionClose, SessionWait};
+static int session_status = SessionOpen; /* In SSH2: login session closed. */
static void client_init_dispatch(void);
int session_ident = -1;
@@ -320,6 +322,10 @@
client_wait_until_can_do_something(fd_set **readsetp, fd_set **writesetp,
int *maxfdp, int *nallocp, int rekeying)
{
+ struct timeval timer;
+ struct timeval *timerp;
+ int rc;
+
/* Add any selections by the channel mechanism. */
channel_prepare_select(readsetp, writesetp, maxfdp, nallocp, rekeying);
@@ -343,7 +349,7 @@
FD_SET(fileno(stderr), *writesetp);
} else {
/...
2006 Apr 22
2
bug & patch in ServerAliveInterval (openssh 4.3-p2)
...c openssh-4.3p2-alive-fixed/clientloop.c
--- openssh-4.3p2/clientloop.c 2005-12-31 07:22:32.000000000 +0200
+++ openssh-4.3p2-alive-fixed/clientloop.c 2006-04-22 19:32:17.000000000 +0300
@@ -456,7 +456,7 @@
client_wait_until_can_do_something(fd_set **readsetp, fd_set **writesetp,
int *maxfdp, u_int *nallocp, int rekeying)
{
- struct timeval tv, *tvp;
+ static struct timeval tv, *tvp;
int ret;
/* Add any selections by the channel mechanism. */
@@ -508,12 +508,16 @@
if (options.server_alive_interval == 0 || !compat20)
tvp = NULL...
2003 Apr 04
5
Anti-idle in OpenSSH client?
Heya,
Most of the windows ssh clients (putty, securecrt) have anti-idle
features. They offer either a null packet or protocol no-op or user
defined string to be sent over every x seconds.
Is this possible or planned with the OpenSSH client? Our draconian
firewall admins have started timing out ssh sessions. Yes I'm aware I
could hack up a port forwarding dumb traffic process, but was
2006 Sep 07
12
Multiple (multiplexed) simultaneous ssh connections - Cygwin bug?
Hello,
?
I need to make many (>50) ssh connections from linux to cygwin at the same time. Using Windows 2000 Server (OpenSSH_4.3p2, OpenSSL 0.9.8b and updated cygwin) and Linux RHEL4 (OpenSSH_3.9p1, OpenSSL 0.9.7a).
?
It's been difficult to optimize many simultaneous connections. Here were some issues:
1.?????? On Windows XP/Professional, Microsoft intentionally cripples the TCP/IP stack.
2005 Sep 04
2
ControlPersist and multiple X11 forwarding.
Three patches attached.
One implements a 'ControlPersist' option, which when used with
'ControlMaster auto' or 'ControlMaster 'yes' make makes the master
background itself and stick around after its own primary session is
completed.
The second causes control clients to pass X11 display, auth proto and
auth data over the control socket so that appropriate X11
2001 Aug 20
1
Idletimeout patch, third attempt
...at indicate that they
diff -ru openssh-2.9p2.orig/serverloop.c openssh-2.9p2/serverloop.c
--- openssh-2.9p2.orig/serverloop.c Sat Apr 14 02:28:03 2001
+++ openssh-2.9p2/serverloop.c Mon Aug 20 23:33:30 2001
@@ -190,7 +190,6 @@
wait_until_can_do_something(fd_set **readsetp, fd_set **writesetp, int *maxfdp,
u_int max_time_milliseconds)
{
- struct timeval tv, *tvp;
int ret;
int client_alive_scheduled = 0;
@@ -259,25 +258,15 @@
if (max_time_milliseconds == 0 || client_alive_scheduled)
max_time_milliseconds = 100;
- if (max_time_milliseconds == 0)
- tvp = NULL;
- else {
- tv.tv_se...
2001 Sep 05
2
sshd hangs on logout -- is this a bug?
In the changelog, there is an entry:
20001129
- (djm) Back out all the serverloop.c hacks. sshd will now hang again
if there are background children with open fds.
Does this mean that this is regarded as expected (and correct) behavior, that
should not change in the future, or does it mean that this behavior is a
known problem that someone will eventually fix?
--Adam
--
Adam McKenna
2001 Oct 16
1
Defeating Timing Attacks Patch for OpenSSH 2.9.9p2 and 2.9p2
...e descriptors).
*/
-
-static void
+/*
+ * SD Mod: We changed the return value of
client_wait_until_can_do_something
+ * from void to int. It now returns 1 if the steno_timer has expired
and 0 if not.
+ */
+int
client_wait_until_can_do_something(fd_set **readsetp, fd_set
**writesetp,
int *maxfdp, int *nallocp, int rekeying)
{
+ /* SD Mod: added variable steno_timer */
+ static struct timeval steno_timer = {0, 50000};
+
+ int return_val = 0;
+ long int prev_timer_val = 0;
+
/* Add any selections by the channel mechanism. */
channel_prepare_select(r...