1 files changed, 238 insertions, 0 deletions
diff --git a/crypto/openssh/ssh-add.c b/crypto/openssh/ssh-add.c
new file mode 100644
index 0000000..61f7c66
--- /dev/null
+++ b/crypto/openssh/ssh-add.c
@@ -0,0 +1,238 @@
+/*
+ * 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 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("$FreeBSD$");
+RCSID("$OpenBSD: ssh-add.c,v 1.36 2001/04/18 21:57:42 markus Exp $");
+
+#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"
+
+/* we keep a cache of one passphrases */
+static char *pass = NULL;
+void
+clear_pass(void)
+{
+	if (pass) {
+		memset(pass, 0, strlen(pass));
+		xfree(pass);
+		pass = NULL;
+	}
+}
+
+void
+delete_file(AuthenticationConnection *ac, const char *filename)
+{
+	Key *public;
+	char *comment = NULL;
+
+	public = key_load_public(filename, &comment);
+	if (public == NULL) {
+		printf("Bad key file %s\n", filename);
+		return;
+	}
+	if (ssh_remove_identity(ac, public))
+		fprintf(stderr, "Identity removed: %s (%s)\n", filename, comment);
+	else
+		fprintf(stderr, "Could not remove identity: %s\n", filename);
+	key_free(public);
+	xfree(comment);
+}
+
+/* Send a request to remove all identities. */
+void
+delete_all(AuthenticationConnection *ac)
+{
+	int success = 1;
+
+	if (!ssh_remove_all_identities(ac, 1))
+		success = 0;
+	/* ignore error-code for ssh2 */
+	ssh_remove_all_identities(ac, 2);
+
+	if (success)
+		fprintf(stderr, "All identities removed.\n");
+	else
+		fprintf(stderr, "Failed to remove all identities.\n");
+}
+
+void
+add_file(AuthenticationConnection *ac, const char *filename)
+{
+	struct stat st;
+	Key *private;
+	char *comment = NULL;
+	char msg[1024];
+
+	if (stat(filename, &st) < 0) {
+		perror(filename);
+		exit(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();
+		printf("Need passphrase for %.200s\n", filename);
+		snprintf(msg, sizeof msg, "Enter passphrase for %.200s ",
+		   comment);
+		for (;;) {
+			pass = read_passphrase(msg, 1);
+			if (strcmp(pass, "") == 0) {
+				clear_pass();
+				xfree(comment);
+				return;
+			}
+			private = key_load_private(filename, pass, &comment);
+			if (private != NULL)
+				break;
+			clear_pass();
+			strlcpy(msg, "Bad passphrase, try again ", sizeof msg);
+		}
+	}
+	if (ssh_add_identity(ac, private, comment))
+		fprintf(stderr, "Identity added: %s (%s)\n", filename, comment);
+	else
+		fprintf(stderr, "Could not add identity: %s\n", filename);
+	xfree(comment);
+	key_free(private);
+}
+
+void
+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, "key_write failed");
+				fprintf(stdout, " %s\n", comment);
+			}
+			key_free(key);
+			xfree(comment);
+		}
+	}
+	if (!had_identities)
+		printf("The agent has no identities.\n");
+}
+
+int
+main(int argc, char **argv)
+{
+	AuthenticationConnection *ac = NULL;
+	struct passwd *pw;
+	char buf[1024];
+	int no_files = 1;
+	int i;
+	int deleting = 0;
+
+	SSLeay_add_all_algorithms();
+
+	/* At first, get a connection to the authentication agent. */
+	ac = ssh_get_authentication_connection();
+	if (ac == NULL) {
+		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) {
+			deleting = 1;
+			continue;
+		}
+		if (strcmp(argv[i], "-D") == 0) {
+			delete_all(ac);
+			no_files = 0;
+			continue;
+		}
+		no_files = 0;
+		if (deleting)
+			delete_file(ac, argv[i]);
+		else
+			add_file(ac, argv[i]);
+	}
+	if (no_files) {
+		pw = getpwuid(getuid());
+		if (!pw) {
+			fprintf(stderr, "No user found with uid %u\n",
+			    (u_int)getuid());
+			ssh_close_authentication_connection(ac);
+			exit(1);
+		}
+		snprintf(buf, sizeof buf, "%s/%s", pw->pw_dir, _PATH_SSH_CLIENT_IDENTITY);
+		if (deleting)
+			delete_file(ac, buf);
+		else
+			add_file(ac, buf);
+	}
+	clear_pass();
+	ssh_close_authentication_connection(ac);
+	exit(0);
+}