OpenSolaris Launch

1 files changed, 441 insertions, 0 deletions

diff --git a/usr/src/cmd/ssh/ssh-add/ssh-add.c b/usr/src/cmd/ssh/ssh-add/ssh-add.c
new file mode 100644
index 0000000000..d6b9d532ce
--- /dev/null
+++ b/usr/src/cmd/ssh/ssh-add/ssh-add.c
@@ -0,0 +1,441 @@
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * Author: Tatu Ylonen <ylo@cs.hut.fi>
+ * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+ *                    All rights reserved
+ * Adds an identity to the authentication server, or removes an identity.
+ *
+ * As far as I am concerned, the code I have written for this software
+ * can be used freely for any purpose.  Any derived versions of this
+ * software must be clearly marked as such, and if the derived work is
+ * incompatible with the protocol description in the RFC file, it must be
+ * called by a name other than "ssh" or "Secure Shell".
+ *
+ * SSH2 implementation,
+ * 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
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "includes.h"
+RCSID("$OpenBSD: ssh-add.c,v 1.63 2002/09/19 15:51:23 markus Exp $");
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <openssl/evp.h>
+
+#include "ssh.h"
+#include "rsa.h"
+#include "log.h"
+#include "xmalloc.h"
+#include "key.h"
+#include "authfd.h"
+#include "authfile.h"
+#include "pathnames.h"
+#include "readpass.h"
+#include "misc.h"
+
+#ifdef HAVE___PROGNAME
+extern char *__progname;
+#else
+char *__progname;
+#endif
+
+/* argv0 */
+extern char *__progname;
+
+/* Default files to add */
+static char *default_files[] = {
+	_PATH_SSH_CLIENT_ID_RSA,
+	_PATH_SSH_CLIENT_ID_DSA,
+	_PATH_SSH_CLIENT_IDENTITY,
+	NULL
+};
+
+/* Default lifetime (0 == forever) */
+static int lifetime = 0;
+
+/* we keep a cache of one passphrases */
+static char *pass = NULL;
+static void
+clear_pass(void)
+{
+	if (pass) {
+		memset(pass, 0, strlen(pass));
+		xfree(pass);
+		pass = NULL;
+	}
+}
+
+static int
+delete_file(AuthenticationConnection *ac, const char *filename)
+{
+	Key *public;
+	char *comment = NULL;
+	int ret = -1;
+
+	public = key_load_public(filename, &comment);
+	if (public == NULL) {
+		printf(gettext("Bad key file %s\n"), filename);
+		return -1;
+	}
+	if (ssh_remove_identity(ac, public)) {
+		fprintf(stderr, gettext("Identity removed: %s (%s)\n"),
+			filename, comment);
+		ret = 0;
+	} else
+		fprintf(stderr, gettext("Could not remove identity: %s\n"),
+			filename);
+
+	key_free(public);
+	xfree(comment);
+
+	return ret;
+}
+
+/* Send a request to remove all identities. */
+static int
+delete_all(AuthenticationConnection *ac)
+{
+	int ret = -1;
+
+	if (ssh_remove_all_identities(ac, 1))
+		ret = 0;
+	/* ignore error-code for ssh2 */
+	ssh_remove_all_identities(ac, 2);
+
+	if (ret == 0)
+		fprintf(stderr, gettext("All identities removed.\n"));
+	else
+		fprintf(stderr, gettext("Failed to remove all identities.\n"));
+
+	return ret;
+}
+
+static int
+add_file(AuthenticationConnection *ac, const char *filename)
+{
+	struct stat st;
+	Key *private;
+	char *comment = NULL;
+	char msg[1024];
+	int ret = -1;
+
+	if (stat(filename, &st) < 0) {
+		perror(filename);
+		return -1;
+	}
+	/* At first, try empty passphrase */
+	private = key_load_private(filename, "", &comment);
+	if (comment == NULL)
+		comment = xstrdup(filename);
+	/* try last */
+	if (private == NULL && pass != NULL)
+		private = key_load_private(filename, pass, NULL);
+	if (private == NULL) {
+		/* clear passphrase since it did not work */
+		clear_pass();
+		snprintf(msg, sizeof msg,
+			 gettext("Enter passphrase for %.200s: "), comment);
+		for (;;) {
+			pass = read_passphrase(msg, RP_ALLOW_STDIN);
+			if (strcmp(pass, "") == 0) {
+				clear_pass();
+				xfree(comment);
+				return -1;
+			}
+			private = key_load_private(filename, pass, &comment);
+			if (private != NULL)
+				break;
+			clear_pass();
+			strlcpy(msg, gettext("Bad passphrase, try again: "),
+				sizeof msg);
+		}
+	}
+
+	if (ssh_add_identity_constrained(ac, private, comment, lifetime)) {
+		fprintf(stderr, gettext("Identity added: %s (%s)\n"),
+			filename, comment);
+		ret = 0;
+		if (lifetime != 0)
+                        fprintf(stderr,
+			    gettext("Lifetime set to %d seconds\n"), lifetime);
+	} else if (ssh_add_identity(ac, private, comment)) {
+		fprintf(stderr, gettext("Identity added: %s (%s)\n"),
+			filename, comment);
+		ret = 0;
+	} else {
+		fprintf(stderr, gettext("Could not add identity: %s\n"),
+			filename);
+	}
+
+	xfree(comment);
+	key_free(private);
+
+	return ret;
+}
+
+#ifdef SMARTCARD
+static int
+update_card(AuthenticationConnection *ac, int add, const char *id)
+{
+	char *pin;
+
+	pin = read_passphrase("Enter passphrase for smartcard: ", RP_ALLOW_STDIN);
+	if (pin == NULL)
+		return -1;
+
+	if (ssh_update_card(ac, add, id, pin)) {
+		fprintf(stderr, "Card %s: %s\n",
+		    add ? "added" : "removed", id);
+		return 0;
+	} else {
+		fprintf(stderr, "Could not %s card: %s\n",
+		    add ? "add" : "remove", id);
+		return -1;
+	}
+}
+#endif /* SMARTCARD */
+
+static int
+list_identities(AuthenticationConnection *ac, int do_fp)
+{
+	Key *key;
+	char *comment, *fp;
+	int had_identities = 0;
+	int version;
+
+	for (version = 1; version <= 2; version++) {
+		for (key = ssh_get_first_identity(ac, &comment, version);
+		    key != NULL;
+		    key = ssh_get_next_identity(ac, &comment, version)) {
+			had_identities = 1;
+			if (do_fp) {
+				fp = key_fingerprint(key, SSH_FP_MD5,
+				    SSH_FP_HEX);
+				printf("%d %s %s (%s)\n",
+				    key_size(key), fp, comment, key_type(key));
+				xfree(fp);
+			} else {
+				if (!key_write(key, stdout))
+					fprintf(stderr,
+						gettext("key_write failed"));
+				fprintf(stdout, " %s\n", comment);
+			}
+			key_free(key);
+			xfree(comment);
+		}
+	}
+	if (!had_identities) {
+		printf(gettext("The agent has no identities.\n"));
+		return -1;
+	}
+	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, gettext("Passwords do not match.\n"));
+			passok = 0;
+		}
+		memset(p2, 0, strlen(p2));
+		xfree(p2);
+	}
+	if (passok && ssh_lock_agent(ac, lock, p1)) {
+		if (lock)
+			fprintf(stderr, gettext("Agent locked.\n"));
+		else
+			fprintf(stderr, gettext("Agent unlocked.\n"));
+		ret = 0;
+	} else {
+		if (lock)
+			fprintf(stderr, gettext("Failed to lock agent.\n"));
+		else
+			fprintf(stderr, gettext("Failed to unlock agent.\n"));
+	}
+	memset(p1, 0, strlen(p1));
+	xfree(p1);
+	return (ret);
+}
+
+static int
+do_file(AuthenticationConnection *ac, int deleting, char *file)
+{
+	if (deleting) {
+		if (delete_file(ac, file) == -1)
+			return -1;
+	} else {
+		if (add_file(ac, file) == -1)
+			return -1;
+	}
+	return 0;
+}
+
+static void
+usage(void)
+{
+	fprintf(stderr,
+		gettext( "Usage: %s [options]\n"
+		"Options:\n"
+		"  -l          List fingerprints of all identities.\n"
+		"  -L          List public key parameters of all identities.\n"
+		"  -d          Delete identity.\n"
+		"  -D          Delete all identities.\n"
+		"  -x          Lock agent.\n"
+		"  -X          Unlock agent.\n"
+		"  -t life     Set lifetime (seconds) when adding identities.\n"
+#ifdef SMARTCARD
+		"  -s reader   Add key in smartcard reader.\n"
+		"  -e reader   Remove key in smartcard reader.\n"
+#endif /* SMARTCARD */
+		), __progname);
+}
+
+int
+main(int argc, char **argv)
+{
+	extern char *optarg;
+	extern int optind;
+	AuthenticationConnection *ac = NULL;
+#ifdef SMARTCARD
+	char *sc_reader_id = NULL;
+#endif /* SMARTCARD */
+	int i, ch, deleting = 0, ret = 0;
+
+	__progname = get_progname(argv[0]);
+
+	(void) g11n_setlocale(LC_ALL, "");
+
+	init_rng();
+	seed_rng();
+
+	SSLeay_add_all_algorithms();
+
+	/* At first, get a connection to the authentication agent. */
+	ac = ssh_get_authentication_connection();
+	if (ac == NULL) {
+		fprintf(stderr, gettext("Could not open a connection "
+			    "to your authentication agent.\n"));
+		exit(2);
+	}
+	while ((ch = getopt(argc, argv, "lLdDxXe:s:t:")) != -1) {
+		switch (ch) {
+		case 'l':
+		case 'L':
+			if (list_identities(ac, ch == 'l' ? 1 : 0) == -1)
+				ret = 1;
+			goto done;
+			break;
+		case 'x':
+		case 'X':
+			if (lock_agent(ac, ch == 'x' ? 1 : 0) == -1)
+				ret = 1;
+			goto done;
+			break;
+		case 'd':
+			deleting = 1;
+			break;
+		case 'D':
+			if (delete_all(ac) == -1)
+				ret = 1;
+			goto done;
+			break;
+#ifdef SMARTCARD
+		case 's':
+			sc_reader_id = optarg;
+			break;
+		case 'e':
+			deleting = 1;
+			sc_reader_id = optarg;
+			break;
+#endif /* SMARTCARD */
+		case 't':
+			if ((lifetime = convtime(optarg)) == -1) {
+				fprintf(stderr, gettext("Invalid lifetime\n"));
+				ret = 1;
+				goto done;
+			}
+			break;
+		default:
+			usage();
+			ret = 1;
+			goto done;
+		}
+	}
+	argc -= optind;
+	argv += optind;
+#ifdef SMARTCARD
+	if (sc_reader_id != NULL) {
+		if (update_card(ac, !deleting, sc_reader_id) == -1)
+			ret = 1;
+		goto done;
+	}
+#endif /* SMARTCARD */
+	if (argc == 0) {
+		char buf[MAXPATHLEN];
+		struct passwd *pw;
+		struct stat st;
+		int count = 0;
+
+		if ((pw = getpwuid(getuid())) == NULL) {
+			fprintf(stderr, gettext("No user found with uid %u\n"),
+			    (u_int)getuid());
+			ret = 1;
+			goto done;
+		}
+
+		for(i = 0; default_files[i]; i++) {
+			snprintf(buf, sizeof(buf), "%s/%s", pw->pw_dir,
+			    default_files[i]);
+			if (stat(buf, &st) < 0)
+				continue;
+			if (do_file(ac, deleting, buf) == -1)
+				ret = 1;
+			else
+				count++;
+		}
+		if (count == 0)
+			ret = 1;
+	} else {
+		for(i = 0; i < argc; i++) {
+			if (do_file(ac, deleting, argv[i]) == -1)
+				ret = 1;
+		}
+	}
+	clear_pass();
+
+done:
+	ssh_close_authentication_connection(ac);
+	return ret;
+}