Import of OpenSSH 3.6.1p1

[gssapi-openssh.git] / openssh / ssh-add.c

diff --git a/openssh/ssh-add.c b/openssh/ssh-add.c
index d24d761a8db1980fb7c27eee06cb5d52567de2ec..9adec3094419fc9adeaec28ffa2ca68f35b8770f 100644 (file)
--- a/openssh/ssh-add.c
+++ b/openssh/ssh-add.c
@@ -35,7 +35,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: ssh-add.c,v 1.53 2002/03/21 22:44:05 rees Exp $");
+RCSID("$OpenBSD: ssh-add.c,v 1.66 2003/03/05 22:33:43 markus Exp $");
 
 #include <openssl/evp.h>
 
@@ -48,6 +48,7 @@ RCSID("$OpenBSD: ssh-add.c,v 1.53 2002/03/21 22:44:05 rees Exp $");
 #include "authfile.h"
 #include "pathnames.h"
 #include "readpass.h"
+#include "misc.h"
 
 #ifdef HAVE___PROGNAME
 extern char *__progname;
@@ -66,6 +67,11 @@ static char *default_files[] = {
        NULL
 };
 
+/* Default lifetime (0 == forever) */
+static int lifetime = 0;
+
+/* User has to confirm key use */
+static int confirm = 0;
 
 /* we keep a cache of one passphrases */
 static char *pass = NULL;
@@ -161,11 +167,23 @@ add_file(AuthenticationConnection *ac, const char *filename)
                        strlcpy(msg, "Bad passphrase, try again: ", sizeof msg);
                }
        }
-       if (ssh_add_identity(ac, private, comment)) {
+
+       if (ssh_add_identity_constrained(ac, private, comment, lifetime,
+           confirm)) {
                fprintf(stderr, "Identity added: %s (%s)\n", filename, comment);
                ret = 0;
-       } else
+               if (lifetime != 0)
+                       fprintf(stderr,
+                           "Lifetime set to %d seconds\n", lifetime);
+               if (confirm != 0)
+                       fprintf(stderr,
+                           "The user has to confirm each use of the key\n");
+       } else if (ssh_add_identity(ac, private, comment)) {
+               fprintf(stderr, "Identity added: %s (%s)\n", filename, comment);
+               ret = 0;
+       } else {
                fprintf(stderr, "Could not add identity: %s\n", filename);
+       }
 
        xfree(comment);
        key_free(private);
@@ -177,6 +195,7 @@ static int
 update_card(AuthenticationConnection *ac, int add, const char *id)
 {
        char *pin;
+       int ret = -1;
 
        pin = read_passphrase("Enter passphrase for smartcard: ", RP_ALLOW_STDIN);
        if (pin == NULL)
@@ -185,12 +204,14 @@ update_card(AuthenticationConnection *ac, int add, const char *id)
        if (ssh_update_card(ac, add, id, pin)) {
                fprintf(stderr, "Card %s: %s\n",
                    add ? "added" : "removed", id);
-               return 0;
+               ret = 0;
        } else {
                fprintf(stderr, "Could not %s card: %s\n",
                    add ? "add" : "remove", id);
-               return -1;
+               ret = -1;
        }
+       xfree(pin);
+       return ret;
 }
 
 static int
@@ -228,6 +249,34 @@ list_identities(AuthenticationConnection *ac, int do_fp)
        return 0;
 }
 
+static int
+lock_agent(AuthenticationConnection *ac, int lock)
+{
+       char prompt[100], *p1, *p2;
+       int passok = 1, ret = -1;
+
+       strlcpy(prompt, "Enter lock password: ", sizeof(prompt));
+       p1 = read_passphrase(prompt, RP_ALLOW_STDIN);
+       if (lock) {
+               strlcpy(prompt, "Again: ", sizeof prompt);
+               p2 = read_passphrase(prompt, RP_ALLOW_STDIN);
+               if (strcmp(p1, p2) != 0) {
+                       fprintf(stderr, "Passwords do not match.\n");
+                       passok = 0;
+               }
+               memset(p2, 0, strlen(p2));
+               xfree(p2);
+       }
+       if (passok && ssh_lock_agent(ac, lock, p1)) {
+               fprintf(stderr, "Agent %slocked.\n", lock ? "" : "un");
+               ret = 0;
+       } else
+               fprintf(stderr, "Failed to %slock agent.\n", lock ? "" : "un");
+       memset(p1, 0, strlen(p1));
+       xfree(p1);
+       return (ret);
+}
+
 static int
 do_file(AuthenticationConnection *ac, int deleting, char *file)
 {
@@ -250,6 +299,10 @@ usage(void)
        fprintf(stderr, "  -L          List public key parameters of all identities.\n");
        fprintf(stderr, "  -d          Delete identity.\n");
        fprintf(stderr, "  -D          Delete all identities.\n");
+       fprintf(stderr, "  -x          Lock agent.\n");
+       fprintf(stderr, "  -X          Unlock agent.\n");
+       fprintf(stderr, "  -t life     Set lifetime (in seconds) when adding identities.\n");
+       fprintf(stderr, "  -c          Require confirmation to sign using identities\n");
 #ifdef SMARTCARD
        fprintf(stderr, "  -s reader   Add key in smartcard reader.\n");
        fprintf(stderr, "  -e reader   Remove key in smartcard reader.\n");
@@ -277,7 +330,7 @@ main(int argc, char **argv)
                fprintf(stderr, "Could not open a connection to your authentication agent.\n");
                exit(2);
        }
-       while ((ch = getopt(argc, argv, "lLdDe:s:")) != -1) {
+       while ((ch = getopt(argc, argv, "lLcdDxXe:s:t:")) != -1) {
                switch (ch) {
                case 'l':
                case 'L':
@@ -285,6 +338,15 @@ main(int argc, char **argv)
                                ret = 1;
                        goto done;
                        break;
+               case 'x':
+               case 'X':
+                       if (lock_agent(ac, ch == 'x' ? 1 : 0) == -1)
+                               ret = 1;
+                       goto done;
+                       break;
+               case 'c':
+                       confirm = 1;
+                       break;
                case 'd':
                        deleting = 1;
                        break;
@@ -300,6 +362,13 @@ main(int argc, char **argv)
                        deleting = 1;
                        sc_reader_id = optarg;
                        break;
+               case 't':
+                       if ((lifetime = convtime(optarg)) == -1) {
+                               fprintf(stderr, "Invalid lifetime\n");
+                               ret = 1;
+                               goto done;
+                       }
+                       break;
                default:
                        usage();
                        ret = 1;