]> andersk Git - openssh.git/blobdiff - ssh-add.c
- jakob@cvs.openbsd.org 2001/07/31 12:53:34
[openssh.git] / ssh-add.c
index 8032cd24fae846a200a6df3417e201ebe767fef2..711dca5ead6baa589f0a9e86d8608fb6ac04395c 100644 (file)
--- a/ssh-add.c
+++ b/ssh-add.c
@@ -11,7 +11,7 @@
  * called by a name other than "ssh" or "Secure Shell".
  *
  * SSH2 implementation,
- * Copyright (c) 2000 Markus Friedl.  All rights reserved.
+ * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -35,7 +35,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: ssh-add.c,v 1.34 2001/04/14 04:31:01 deraadt Exp $");
+RCSID("$OpenBSD: ssh-add.c,v 1.43 2001/06/27 06:26:36 markus Exp $");
 
 #include <openssl/evp.h>
 
@@ -57,7 +57,7 @@ char *__progname;
 
 /* we keep a cache of one passphrases */
 static char *pass = NULL;
-void
+static void
 clear_pass(void)
 {
        if (pass) {
@@ -67,7 +67,7 @@ clear_pass(void)
        }
 }
 
-void
+static void
 delete_file(AuthenticationConnection *ac, const char *filename)
 {
        Key *public;
@@ -87,7 +87,7 @@ delete_file(AuthenticationConnection *ac, const char *filename)
 }
 
 /* Send a request to remove all identities. */
-void
+static void
 delete_all(AuthenticationConnection *ac)
 {
        int success = 1;
@@ -103,66 +103,18 @@ delete_all(AuthenticationConnection *ac)
                fprintf(stderr, "Failed to remove all identities.\n");
 }
 
-char *
-ssh_askpass(char *askpass, char *msg)
-{
-       pid_t pid;
-       size_t len;
-       char *nl, *pass;
-       int p[2], status;
-       char buf[1024];
-
-       if (fflush(stdout) != 0)
-               error("ssh_askpass: fflush: %s", strerror(errno));
-       if (askpass == NULL)
-               fatal("internal error: askpass undefined");
-       if (pipe(p) < 0)
-               fatal("ssh_askpass: pipe: %s", strerror(errno));
-       if ((pid = fork()) < 0)
-               fatal("ssh_askpass: fork: %s", strerror(errno));
-       if (pid == 0) {
-               close(p[0]);
-               if (dup2(p[1], STDOUT_FILENO) < 0)
-                       fatal("ssh_askpass: dup2: %s", strerror(errno));
-               execlp(askpass, askpass, msg, (char *) 0);
-               fatal("ssh_askpass: exec(%s): %s", askpass, strerror(errno));
-       }
-       close(p[1]);
-       len = read(p[0], buf, sizeof buf);
-       close(p[0]);
-       while (waitpid(pid, &status, 0) < 0)
-               if (errno != EINTR)
-                       break;
-       if (len <= 1)
-               return xstrdup("");
-       nl = strchr(buf, '\n');
-       if (nl)
-               *nl = '\0';
-       pass = xstrdup(buf);
-       memset(buf, 0, sizeof(buf));
-       return pass;
-}
-
-void
+static void
 add_file(AuthenticationConnection *ac, const char *filename)
 {
        struct stat st;
        Key *private;
-       char *comment = NULL, *askpass = NULL;
-       char buf[1024], msg[1024];
-       int interactive = isatty(STDIN_FILENO);
+       char *comment = NULL;
+       char msg[1024];
 
        if (stat(filename, &st) < 0) {
                perror(filename);
                exit(1);
        }
-       if (!interactive && getenv("DISPLAY")) {
-               if (getenv(SSH_ASKPASS_ENV))
-                       askpass = getenv(SSH_ASKPASS_ENV);
-               else
-                       askpass = _PATH_SSH_ASKPASS_DEFAULT;
-       }
-
        /* At first, try empty passphrase */
        private = key_load_private(filename, "", &comment);
        if (comment == NULL)
@@ -173,22 +125,12 @@ add_file(AuthenticationConnection *ac, const char *filename)
        if (private == NULL) {
                /* clear passphrase since it did not work */
                clear_pass();
-               printf("Need passphrase for %.200s\n", filename);
-               if (!interactive && askpass == NULL) {
-                       xfree(comment);
-                       return;
-               }
-               snprintf(msg, sizeof msg, "Enter passphrase for %.200s", comment);
+               snprintf(msg, sizeof msg, "Enter passphrase for %.200s: ",
+                  comment);
                for (;;) {
-                       if (interactive) {
-                               snprintf(buf, sizeof buf, "%s: ", msg);
-                               pass = read_passphrase(buf, 1);
-                       } else {
-                               pass = ssh_askpass(askpass, msg);
-                       }
+                       pass = read_passphrase(msg, RP_ALLOW_STDIN);
                        if (strcmp(pass, "") == 0) {
-                               xfree(pass);
-                               pass = NULL;
+                               clear_pass();
                                xfree(comment);
                                return;
                        }
@@ -196,7 +138,7 @@ add_file(AuthenticationConnection *ac, const char *filename)
                        if (private != NULL)
                                break;
                        clear_pass();
-                       strlcpy(msg, "Bad passphrase, try again", sizeof msg);
+                       strlcpy(msg, "Bad passphrase, try again", sizeof msg);
                }
        }
        if (ssh_add_identity(ac, private, comment))
@@ -207,7 +149,18 @@ add_file(AuthenticationConnection *ac, const char *filename)
        key_free(private);
 }
 
-void
+static void
+update_card(AuthenticationConnection *ac, int add, int id)
+{
+       if (ssh_update_card(ac, add, id))
+               fprintf(stderr, "Card %s: %d\n",
+                    add ? "added" : "removed", id);
+       else
+               fprintf(stderr, "Could not %s card: %d\n",
+                    add ? "add" : "remove", id);
+}
+
+static void
 list_identities(AuthenticationConnection *ac, int do_fp)
 {
        Key *key;
@@ -239,18 +192,30 @@ list_identities(AuthenticationConnection *ac, int do_fp)
                printf("The agent has no identities.\n");
 }
 
+static void
+usage(void)
+{
+       printf("Usage: ssh-add [options]\n");
+       printf("    -l, -L        : list identities\n");
+       printf("    -d            : delete identity\n");
+       printf("    -D            : delete all identities\n");
+       printf("    -s reader_num : add key in the smartcard in reader_num.\n");
+       printf("    -e reader_num : remove key in the smartcard in reader_num.\n");
+}
+
 int
 main(int argc, char **argv)
 {
+       extern char *optarg;
+       extern int optind;
        AuthenticationConnection *ac = NULL;
        struct passwd *pw;
        char buf[1024];
-       int no_files = 1;
-       int i;
-       int deleting = 0;
+       int i, ch, deleting = 0, sc_reader_num = -1;
 
        __progname = get_progname(argv[0]);
        init_rng();
+       seed_rng();
 
        SSLeay_add_all_algorithms();
 
@@ -260,30 +225,40 @@ main(int argc, char **argv)
                fprintf(stderr, "Could not open a connection to your authentication agent.\n");
                exit(1);
        }
-       for (i = 1; i < argc; i++) {
-               if ((strcmp(argv[i], "-l") == 0) ||
-                   (strcmp(argv[i], "-L") == 0)) {
-                       list_identities(ac, argv[i][1] == 'l' ? 1 : 0);
-                       /* Don't default-add/delete if -l. */
-                       no_files = 0;
-                       continue;
-               }
-               if (strcmp(argv[i], "-d") == 0) {
+        while ((ch = getopt(argc, argv, "lLdDe:s:")) != -1) {
+               switch (ch) {
+               case 'l':
+               case 'L':
+                       list_identities(ac, ch == 'l' ? 1 : 0);
+                       goto done;
+                       break;
+               case 'd':
                        deleting = 1;
-                       continue;
-               }
-               if (strcmp(argv[i], "-D") == 0) {
+                       break;
+               case 'D':
                        delete_all(ac);
-                       no_files = 0;
-                       continue;
+                       goto done;
+                       break;
+               case 's':
+                       sc_reader_num = atoi(optarg);
+                       break;
+               case 'e':
+                       deleting = 1; 
+                       sc_reader_num = atoi(optarg);
+                       break;
+               default:
+                       usage();
+                       exit(1);
+                       break;
                }
-               no_files = 0;
-               if (deleting)
-                       delete_file(ac, argv[i]);
-               else
-                       add_file(ac, argv[i]);
        }
-       if (no_files) {
+       argc -= optind;
+       argv += optind;
+       if (sc_reader_num != -1) {
+               update_card(ac, !deleting, sc_reader_num);
+               goto done;
+       }
+       if (argc == 0) {
                pw = getpwuid(getuid());
                if (!pw) {
                        fprintf(stderr, "No user found with uid %u\n",
@@ -296,8 +271,17 @@ main(int argc, char **argv)
                        delete_file(ac, buf);
                else
                        add_file(ac, buf);
+       } else {
+               for (i = 0; i < argc; i++) {
+                       if (deleting)
+                               delete_file(ac, argv[i]);
+                       else
+                               add_file(ac, argv[i]);
+               }
        }
        clear_pass();
+
+done:
        ssh_close_authentication_connection(ac);
        exit(0);
 }
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