search for: nallocp

...: 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((*maxfdp)+1, *readset...

...-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; - else {...

...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) backtrace #0 0xff19d6...

...322 tvp = &tv; 323 } 324 325 /* Wait for something to happen, or the timeout to expire. */ 326 ret = select((*maxfdp)+1, *readsetp, *writesetp, NULL, tvp); 327 328 if (ret == -1) { 329 memset(*readsetp, 0, *nallocp); 330 memset(*writesetp, 0, *nallocp); (gdb) bt #0 wait_until_can_do_something (readsetp=0x7ffff8d8, writesetp=0x7ffff8d4, maxfdp=0x7ffff8d0, nallocp=0x7ffff8cc, max_time_milliseconds=0) at serverloop.c:326 #1 0x8bfc in server_loop2 (authctxt=0x42eaf8) at serverloop.c:...

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

...Open, 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 { /* channel_prep...

...ve > 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((*maxfdp)+1, *readset...

...----------------------------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, *readsetp, *...

during my seminar of advanced exploitation techniques (SEAT, [1]) i developed some methods to crack into system via DMA (e.g. via firewire). as part of this i developed a program that steals loaded ssh private keys from ssh-agents. i was astonished to find that the keys are not immediately removed from the agent when a timeout occurs, but only the next time the agent is queried via its socket. i

...Open, 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 { /* channel_pr...

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

...Open, 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 { /* channel_prep...

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.

...). */ - -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(readsetp, write...

Hello, In response to the timing analysis attacks presented by Dawn Song et. al. in her paper http://paris.cs.berkeley.edu/~dawnsong/ssh-timing.html we at Silicon Defense developed a patch for openssh to avoid such measures. Timing Analysis Evasion changes were developed by C. Jason Coit and Roel Jonkman of Silicon Defense. These changes cause SSH to send packets unless request not to,

https://bugzilla.mindrot.org/show_bug.cgi?id=2565 Bug ID: 2565 Summary: High baud rate gets sent, solaris closes pty Product: Portable OpenSSH Version: 7.1p2 Hardware: Sparc OS: Solaris Status: NEW Severity: minor Priority: P5 Component: sshd Assignee: unassigned-bugs at

Hi OpenSSH developers, I am using openSSH (now 2.9.9p2, but prob occurs in 2.9p2 also) to execute commands on a remote machine which outputs data to stdout then pipes it to another invocation of ssh which connects back to the first machine in the same way, where it starts a program to read and store the output from the command on the second machine. I am using the "command" option in

The 4.6p1 sshd is logging this error during remote commands or file transfers: error: channel 0: chan_read_failed for istate 3 Platform is Solaris 8, 4.6p1 + OpenSSL 0.9.8d. The commands and transfers work correctly, so the error message appears to be spurious. The error message does not appear when processing logins. Otherwise 4.6p1 is running without any apparent problems. This error

Hi, We have upgraded the openssh 4.6P1 on Solaris 8 servers. After upgrade we get the below error message whenever we execute the remote commands using ssh. Please let me know what the fix is for this. Apr 8 03:03:43 dvsrv10 sshd[25379]: [ID 800047 auth.info] Accepted publickey for osteam from 10.0.93.31 port 35856 ssh2 Apr 8 03:03:50 dvsrv10 sshd[25381]: [ID 800047 auth.error] error: