mirror of git://anongit.mindrot.org/openssh.git
upstream: let ssh_config(5)'s AddKeysToAgent keyword accept a time
limit for keys in addition to its current flag options. Time-limited keys will automatically be removed from ssh-agent after their expiry time has passed; ok markus@ OpenBSD-Commit-ID: 792e71cacbbc25faab5424cf80bee4a006119f94
This commit is contained in:
djm@openbsd.org
Damien Miller
parent
e9c2002891
commit
d0a195c89e
85
readconf.c
85
readconf.c
|
|
@ -1,4 +1,4 @@
|
|||
/* $OpenBSD: readconf.c,v 1.333 2020/07/17 07:09:24 dtucker Exp $ */
|
||||
/* $OpenBSD: readconf.c,v 1.334 2020/08/11 09:49:57 djm Exp $ */
|
||||
/*
|
||||
* Author: Tatu Ylonen <ylo@cs.hut.fi>
|
||||
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
|
||||
|
|
@ -877,6 +877,21 @@ static const struct multistate multistate_compression[] = {
|
|||
{ NULL, -1 }
|
||||
};
|
||||
|
||||
static int
|
||||
parse_multistate_value(const char *arg, const char *filename, int linenum,
|
||||
const struct multistate *multistate_ptr)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (!arg || *arg == '\0')
|
||||
fatal("%s line %d: missing argument.", filename, linenum);
|
||||
for (i = 0; multistate_ptr[i].key != NULL; i++) {
|
||||
if (strcasecmp(arg, multistate_ptr[i].key) == 0)
|
||||
return multistate_ptr[i].value;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Processes a single option line as used in the configuration files. This
|
||||
* only sets those values that have not already been set.
|
||||
|
|
@ -1000,19 +1015,11 @@ parse_time:
|
|||
multistate_ptr = multistate_flag;
|
||||
parse_multistate:
|
||||
arg = strdelim(&s);
|
||||
if (!arg || *arg == '\0')
|
||||
fatal("%s line %d: missing argument.",
|
||||
filename, linenum);
|
||||
value = -1;
|
||||
for (i = 0; multistate_ptr[i].key != NULL; i++) {
|
||||
if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
|
||||
value = multistate_ptr[i].value;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (value == -1)
|
||||
if ((value = parse_multistate_value(arg, filename, linenum,
|
||||
multistate_ptr)) == -1) {
|
||||
fatal("%s line %d: unsupported option \"%s\".",
|
||||
filename, linenum, arg);
|
||||
}
|
||||
if (*activep && *intptr == -1)
|
||||
*intptr = value;
|
||||
break;
|
||||
|
|
@ -1800,9 +1807,42 @@ parse_keytypes:
|
|||
goto parse_keytypes;
|
||||
|
||||
case oAddKeysToAgent:
|
||||
intptr = &options->add_keys_to_agent;
|
||||
multistate_ptr = multistate_yesnoaskconfirm;
|
||||
goto parse_multistate;
|
||||
arg = strdelim(&s);
|
||||
arg2 = strdelim(&s);
|
||||
value = parse_multistate_value(arg, filename, linenum,
|
||||
multistate_yesnoaskconfirm);
|
||||
value2 = 0; /* unlimited lifespan by default */
|
||||
if (value == 3 && arg2 != NULL) {
|
||||
/* allow "AddKeysToAgent confirm 5m" */
|
||||
if ((value2 = convtime(arg2)) == -1 || value2 > INT_MAX)
|
||||
fatal("%s line %d: invalid time value.",
|
||||
filename, linenum);
|
||||
} else if (value == -1 && arg2 == NULL) {
|
||||
if ((value2 = convtime(arg)) == -1 || value2 > INT_MAX)
|
||||
fatal("%s line %d: unsupported option",
|
||||
filename, linenum);
|
||||
value = 1; /* yes */
|
||||
} else if (value == -1 || arg2 != NULL) {
|
||||
fatal("%s line %d: unsupported option",
|
||||
filename, linenum);
|
||||
}
|
||||
if (*activep && options->add_keys_to_agent == -1) {
|
||||
options->add_keys_to_agent = value;
|
||||
options->add_keys_to_agent_lifespan = value2;
|
||||
}
|
||||
break;
|
||||
|
||||
arg = strdelim(&s);
|
||||
if (!arg || *arg == '\0')
|
||||
fatal("%s line %d: missing time value.",
|
||||
filename, linenum);
|
||||
if (strcmp(arg, "none") == 0)
|
||||
value = -1;
|
||||
else if ((value = convtime(arg)) == -1 || value > INT_MAX)
|
||||
fatal("%s line %d: invalid time value.",
|
||||
filename, linenum);
|
||||
if (*activep && *intptr == -1)
|
||||
*intptr = value;
|
||||
|
||||
case oIdentityAgent:
|
||||
charptr = &options->identity_agent;
|
||||
|
|
@ -2016,6 +2056,7 @@ initialize_options(Options * options)
|
|||
options->permit_local_command = -1;
|
||||
options->remote_command = NULL;
|
||||
options->add_keys_to_agent = -1;
|
||||
options->add_keys_to_agent_lifespan = -1;
|
||||
options->identity_agent = NULL;
|
||||
options->visual_host_key = -1;
|
||||
options->ip_qos_interactive = -1;
|
||||
|
|
@ -2123,8 +2164,10 @@ fill_default_options(Options * options)
|
|||
if (options->number_of_password_prompts == -1)
|
||||
options->number_of_password_prompts = 3;
|
||||
/* options->hostkeyalgorithms, default set in myproposals.h */
|
||||
if (options->add_keys_to_agent == -1)
|
||||
if (options->add_keys_to_agent == -1) {
|
||||
options->add_keys_to_agent = 0;
|
||||
options->add_keys_to_agent_lifespan = 0;
|
||||
}
|
||||
if (options->num_identity_files == 0) {
|
||||
add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
|
||||
add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
|
||||
|
|
@ -2728,7 +2771,6 @@ dump_client_config(Options *o, const char *host)
|
|||
dump_cfg_int(oPort, o->port);
|
||||
|
||||
/* Flag options */
|
||||
dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
|
||||
dump_cfg_fmtint(oAddressFamily, o->address_family);
|
||||
dump_cfg_fmtint(oBatchMode, o->batch_mode);
|
||||
dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
|
||||
|
|
@ -2816,6 +2858,15 @@ dump_client_config(Options *o, const char *host)
|
|||
|
||||
/* Special cases */
|
||||
|
||||
/* AddKeysToAgent */
|
||||
if (o->add_keys_to_agent_lifespan <= 0)
|
||||
dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
|
||||
else {
|
||||
printf("addkeystoagent%s %d\n",
|
||||
o->add_keys_to_agent == 3 ? " confirm" : "",
|
||||
o->add_keys_to_agent_lifespan);
|
||||
}
|
||||
|
||||
/* oForwardAgent */
|
||||
if (o->forward_agent_sock_path == NULL)
|
||||
dump_cfg_fmtint(oForwardAgent, o->forward_agent);
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $OpenBSD: readconf.h,v 1.133 2020/04/03 02:27:12 dtucker Exp $ */
|
||||
/* $OpenBSD: readconf.h,v 1.134 2020/08/11 09:49:57 djm Exp $ */
|
||||
|
||||
/*
|
||||
* Author: Tatu Ylonen <ylo@cs.hut.fi>
|
||||
|
|
@ -97,6 +97,7 @@ typedef struct {
|
|||
struct sshkey *certificates[SSH_MAX_CERTIFICATE_FILES];
|
||||
|
||||
int add_keys_to_agent;
|
||||
int add_keys_to_agent_lifespan;
|
||||
char *identity_agent; /* Optional path to ssh-agent socket */
|
||||
|
||||
/* Local TCP/IP forward requests. */
|
||||
|
|
|
|||
23
ssh_config.5
23
ssh_config.5
|
|
@ -33,8 +33,8 @@
|
|||
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
.\"
|
||||
.\" $OpenBSD: ssh_config.5,v 1.331 2020/07/17 05:59:05 jmc Exp $
|
||||
.Dd $Mdocdate: July 17 2020 $
|
||||
.\" $OpenBSD: ssh_config.5,v 1.332 2020/08/11 09:49:57 djm Exp $
|
||||
.Dd $Mdocdate: August 11 2020 $
|
||||
.Dt SSH_CONFIG 5
|
||||
.Os
|
||||
.Sh NAME
|
||||
|
|
@ -245,13 +245,22 @@ option was specified to
|
|||
If this option is set to
|
||||
.Cm no ,
|
||||
no keys are added to the agent.
|
||||
Alternately, this option may be specified as a time interval
|
||||
using the format described in the
|
||||
.Sx TIME FORMATS
|
||||
section of
|
||||
.Xr sshd_config 5
|
||||
to specify the key's lifetime in
|
||||
.Xr ssh-agent 1 ,
|
||||
after which it will automatically be removed.
|
||||
The argument must be
|
||||
.Cm yes ,
|
||||
.Cm confirm ,
|
||||
.Cm ask ,
|
||||
or
|
||||
.Cm no
|
||||
(the default).
|
||||
(the default),
|
||||
.Cm yes ,
|
||||
.Cm confirm
|
||||
(optionally followed by a time interval),
|
||||
.Cm ask
|
||||
or a time interval.
|
||||
.It Cm AddressFamily
|
||||
Specifies which address family to use when connecting.
|
||||
Valid arguments are
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $OpenBSD: sshconnect.c,v 1.330 2020/07/17 03:43:42 dtucker Exp $ */
|
||||
/* $OpenBSD: sshconnect.c,v 1.331 2020/08/11 09:49:57 djm Exp $ */
|
||||
/*
|
||||
* Author: Tatu Ylonen <ylo@cs.hut.fi>
|
||||
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
|
||||
|
|
@ -1433,7 +1433,8 @@ maybe_add_key_to_agent(const char *authfile, struct sshkey *private,
|
|||
if (sshkey_is_sk(private))
|
||||
skprovider = options.sk_provider;
|
||||
if ((r = ssh_add_identity_constrained(auth_sock, private,
|
||||
comment == NULL ? authfile : comment, 0,
|
||||
comment == NULL ? authfile : comment,
|
||||
options.add_keys_to_agent_lifespan,
|
||||
(options.add_keys_to_agent == 3), 0, skprovider)) == 0)
|
||||
debug("identity added to agent: %s", authfile);
|
||||
else
|
||||
|
|
|
|||
Loading…
Reference in New Issue