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add ssh-agent -D to leave ssh-agent in foreground
 without enabling debug mode; bz#2381 ok dtucker@
This commit is contained in:
djm@openbsd.org 2015-04-24 05:26:44 +00:00 committed by Damien Miller
parent 8ac2ffd7aa
commit 2ea974630d
2 changed files with 24 additions and 11 deletions
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12
ssh-agent.1
View File

@ -1,4 +1,4 @@
.\" $OpenBSD: ssh-agent.1,v 1.57 2014/12/21 22:27:56 djm Exp $
.\" $OpenBSD: ssh-agent.1,v 1.58 2015/04/24 05:26:44 djm Exp $
.\"
.\" Author: Tatu Ylonen <ylo@cs.hut.fi>
.\" Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -34,7 +34,7 @@
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd $Mdocdate: December 21 2014 $
.Dd $Mdocdate: April 24 2015 $
.Dt SSH-AGENT 1
.Os
.Sh NAME
@ -43,6 +43,7 @@
.Sh SYNOPSIS
.Nm ssh-agent
.Op Fl c | s
.Op Fl D
.Op Fl d
.Op Fl a Ar bind_address
.Op Fl E Ar fingerprint_hash
@ -92,11 +93,16 @@ Generate C-shell commands on
This is the default if
.Ev SHELL
looks like it's a csh style of shell.
.It Fl D
Foreground mode.
When this option is specified
.Nm
will not fork.
.It Fl d
Debug mode.
When this option is specified
.Nm
will not fork.
will not fork and will write debug information to standard error.
.It Fl E Ar fingerprint_hash
Specifies the hash algorithm used when displaying key fingerprints.
Valid options are:

23
ssh-agent.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: ssh-agent.c,v 1.200 2015/04/24 01:36:01 deraadt Exp $ */
/* $OpenBSD: ssh-agent.c,v 1.201 2015/04/24 05:26:44 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -1146,7 +1146,7 @@ usage(void)
int
main(int ac, char **av)
{
int c_flag = 0, d_flag = 0, k_flag = 0, s_flag = 0;
int c_flag = 0, d_flag = 0, D_flag = 0, k_flag = 0, s_flag = 0;
int sock, fd, ch, result, saved_errno;
u_int nalloc;
char *shell, *format, *pidstr, *agentsocket = NULL;
@ -1181,7 +1181,7 @@ main(int ac, char **av)
__progname = ssh_get_progname(av[0]);
seed_rng();
while ((ch = getopt(ac, av, "cdksE:a:t:")) != -1) {
while ((ch = getopt(ac, av, "cDdksE:a:t:")) != -1) {
switch (ch) {
case 'E':
fingerprint_hash = ssh_digest_alg_by_name(optarg);
@ -1202,10 +1202,15 @@ main(int ac, char **av)
s_flag++;
break;
case 'd':
if (d_flag)
if (d_flag || D_flag)
usage();
d_flag++;
break;
case 'D':
if (d_flag || D_flag)
usage();
D_flag++;
break;
case 'a':
agentsocket = optarg;
break;
@ -1222,7 +1227,7 @@ main(int ac, char **av)
ac -= optind;
av += optind;
if (ac > 0 && (c_flag || k_flag || s_flag || d_flag))
if (ac > 0 && (c_flag || k_flag || s_flag || d_flag || D_flag))
usage();
if (ac == 0 && !c_flag && !s_flag) {
@ -1291,8 +1296,10 @@ main(int ac, char **av)
* Fork, and have the parent execute the command, if any, or present
* the socket data. The child continues as the authentication agent.
*/
if (d_flag) {
log_init(__progname, SYSLOG_LEVEL_DEBUG1, SYSLOG_FACILITY_AUTH, 1);
if (D_flag || d_flag) {
log_init(__progname,
d_flag ? SYSLOG_LEVEL_DEBUG3 : SYSLOG_LEVEL_INFO,
SYSLOG_FACILITY_AUTH, 1);
format = c_flag ? "setenv %s %s;\n" : "%s=%s; export %s;\n";
printf(format, SSH_AUTHSOCKET_ENV_NAME, socket_name,
SSH_AUTHSOCKET_ENV_NAME);
@ -1364,7 +1371,7 @@ skip:
parent_alive_interval = 10;
idtab_init();
signal(SIGPIPE, SIG_IGN);
signal(SIGINT, d_flag ? cleanup_handler : SIG_IGN);
signal(SIGINT, (d_flag | D_flag) ? cleanup_handler : SIG_IGN);
signal(SIGHUP, cleanup_handler);
signal(SIGTERM, cleanup_handler);
nalloc = 0;