Attachment #2593 for bug #2325

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{
	u_int maxbits, nid;

	if (type == KEY_UNSPEC)
		fatal("unknown key type %s", key_type_name);
		exit(1);
	}
	if (*bitsp == 0) {
		if (type == KEY_DSA)
			*bitsp = DEFAULT_BITS_DSA;

	}
	maxbits = (type == KEY_DSA) ?
	    OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS;
	if (*bitsp > maxbits)
		fatal("key bits exceeds maximum %d", maxbits);
		exit(1);
	}
#ifdef WITH_OPENSSL
	if (type == KEY_DSA && *bitsp != 1024)
		fatal("DSA keys must be 1024 bits");

			name = _PATH_SSH_CLIENT_ID_ED25519;
			break;
		default:
			fatal("bad key type");
			exit(1);
			break;
		}
	}
	snprintf(identity_file, sizeof(identity_file),
	    "%s/%s", pw->pw_dir, name);
	printf("%s (%s): ", prompt, identity_file);
	fflush(stdout);
	if (fgets(buf, sizeof(buf), stdin) == NULL)
		exit(1);
	buf[strcspn(buf, "\n")] = '\0';

	char comment[61];
	int r;

	if (k->type == KEY_RSA1)
		fatal("version 1 keys are not supported");
	if ((r = sshkey_to_blob(k, &blob, &len)) != 0)
		fatal("key_to_blob failed: %s", ssh_err(r));
	if ((r = sshkey_to_blob(k, &blob, &len)) != 0) {
		fprintf(stderr, "key_to_blob failed: %s\n", ssh_err(r));
		exit(1);
	}
	/* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
	snprintf(comment, sizeof(comment),
	    "%u-bit %s, converted by %s@%s from OpenSSH",


	line[0] = '\0';
	while ((c = fgetc(fp)) != EOF) {
		if (pos >= len - 1)
			fatal("input line too long.");
			exit(1);
		}
		switch (c) {
		case '\r':
			c = fgetc(fp);
			if (c != EOF && c != '\n' && ungetc(c, fp) == EOF)
				fatal("unget: %s", strerror(errno));
				exit(1);
			}
			return pos;
		case '\n':
			return pos;

	    (encoded[len-3] == '='))
		encoded[len-3] = '\0';
	blen = uudecode(encoded, blob, sizeof(blob));
	if (blen < 0)
		fatal("uudecode failed.");
		exit(1);
	}
	if (*private)
		*k = do_convert_private_ssh2_from_blob(blob, blen);
	else if ((r = sshkey_from_blob(blob, blen, k)) != 0)
		fatal("decode blob failed: %s", ssh_err(r));
		exit(1);
	}
	fclose(fp);
}


		}
	}

	if (!ok)
		fatal("key write failed");
		exit(1);
	}
	sshkey_free(k);
	exit(0);
}


	if (!have_identity)
		ask_filename(pw, "Enter file in which the key is");
	if (stat(identity_file, &st) < 0)
		fatal("%s: %s", identity_file, strerror(errno));
		exit(1);
	}
	prv = load_identity(identity_file);
	if ((r = sshkey_write(prv, stdout)) != 0)
		error("key_write failed: %s", ssh_err(r));
	sshkey_free(prv);
	fprintf(stdout, "\n");
	exit(0);

	rep =    print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
	if (!have_identity)
		ask_filename(pw, "Enter file in which the key is");
	if (stat(identity_file, &st) < 0)
		fatal("%s: %s", identity_file, strerror(errno));
		exit(1);
	}
	if ((r = sshkey_load_public(identity_file, &public, &comment)) != 0)
		debug2("Error loading public key \"%s\": %s",
		    identity_file, ssh_err(r));

	}
	fclose(f);

	if (invalid)
		fatal("%s is not a public key file.", identity_file);
		exit(1);
	}
	exit(0);
}


		if (stat(key_types[i].path, &st) == 0)
			continue;
		if (errno != ENOENT) {
			error("Could not stat %s: %s", key_types[i].path,
			    strerror(errno));
			first = 0;
			continue;

		bits = 0;
		type_bits_valid(type, NULL, &bits);
		if ((r = sshkey_generate(type, bits, &private)) != 0) {
			error("key_generate failed: %s", ssh_err(r));
			    ssh_err(r));
			first = 0;
			continue;
		}

		    hostname);
		if ((r = sshkey_save_private(private, identity_file, "",
		    comment, use_new_format, new_format_cipher, rounds)) != 0) {
			error("Saving key \"%s\" failed: %s",
			    identity_file, ssh_err(r));
			sshkey_free(private);
			sshkey_free(public);
			first = 0;

		strlcat(identity_file, ".pub", sizeof(identity_file));
		fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
		if (fd == -1) {
			error("Could not save your public key in %s",
			    identity_file);
			sshkey_free(public);
			first = 0;

		}
		f = fdopen(fd, "w");
		if (f == NULL) {
			error("fdopen %s failed", identity_file);
			close(fd);
			sshkey_free(public);
			first = 0;
			continue;
		}
		if ((r = sshkey_write(public, f)) != 0) {
			error("write key failed: %s", ssh_err(r));
			fclose(f);
			sshkey_free(public);
			first = 0;

		    has_wild || l->marker != MRK_NONE) {
			fprintf(ctx->out, "%s\n", l->line);
			if (has_wild && !find_host) {
				logit("%s:%ld: ignoring host name "
				    "with wildcard: %.64s", l->path,
				    l->linenum, l->hosts);
			}
			return 0;

	case HKF_STATUS_INVALID:
		/* Retain invalid lines, but mark file as invalid. */
		ctx->invalid = 1;
		logit("%s:%ld: invalid line", l->path, l->linenum);
		/* FALLTHROUGH */
	default:
		fprintf(ctx->out, "%s\n", l->line);

		/* Retain non-matching hosts when deleting */
		if (l->status == HKF_STATUS_INVALID) {
			ctx->invalid = 1;
			logit("%s:%ld: invalid line", l->path, l->linenum);
			    l->path, l->linenum);
		}
		fprintf(ctx->out, "%s\n", l->line);
	}

		fclose(ctx.out);

	if (ctx.invalid) {
		error("%s is not a valid known_hosts file.", identity_file);
		    identity_file);
		if (inplace) {
			error("Not replacing existing known_hosts "
			    "file because of errors");
			unlink(tmp);
		}
		exit(1);
	} else if (delete_host && !ctx.found_key) {
		logit("Host %s not found in %s", name, identity_file);
		    name, identity_file);
		unlink(tmp);
	} else if (inplace) {
		/* Backup existing file */

			exit(1);
		}

		printf("%s updated.\n", identity_file);
		printf("Original contents retained as %s\n", old);
		if (ctx.has_unhashed) {
			logit("WARNING: %s contains unhashed entries", old);
			logit("Delete this file to ensure privacy "
			    "of hostnames");
			    "of hostnames\n");
		}
	}



	if (!have_identity)
		ask_filename(pw, "Enter file in which the key is");
	if (stat(identity_file, &st) < 0)
		fatal("%s: %s", identity_file, strerror(errno));
		exit(1);
	}
	/* Try to load the file with empty passphrase. */
	r = sshkey_load_private(identity_file, "", &private, &comment);
	if (r == SSH_ERR_KEY_WRONG_PASSPHRASE) {

			goto badkey;
	} else if (r != 0) {
 badkey:
		fatal("Failed to load key %s: %s", identity_file, ssh_err(r));
		    identity_file, ssh_err(r));
		exit(1);
	}
	if (comment)
		printf("Key has comment '%s'\n", comment);

	/* Save the file using the new passphrase. */
	if ((r = sshkey_save_private(private, identity_file, passphrase1,
	    comment, use_new_format, new_format_cipher, rounds)) != 0) {
		error("Saving key \"%s\" failed: %s.",
		    identity_file, ssh_err(r));
		explicit_bzero(passphrase1, strlen(passphrase1));
		free(passphrase1);

	if (stat(fname, &st) < 0) {
		if (errno == ENOENT)
			return 0;
		fatal("%s: %s", fname, strerror(errno));
		exit(1);
	}
	if ((r = sshkey_load_public(fname, &public, &comment)) != 0)
		fatal("Failed to read v2 public key from \"%s\": %s.",
		    fname, ssh_err(r));
		exit(1);
	}
	export_dns_rr(hname, public, stdout, print_generic);
	sshkey_free(public);
	free(comment);


	if (!have_identity)
		ask_filename(pw, "Enter file in which the key is");
	if (stat(identity_file, &st) < 0)
		fatal("%s: %s", identity_file, strerror(errno));
		exit(1);
	}
	if ((r = sshkey_load_private(identity_file, "",
	    &private, &comment)) == 0)
		passphrase = xstrdup("");
	else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
		fatal("Cannot load private key \"%s\": %s.",
		    identity_file, ssh_err(r));
	else {
	} else {
		if (identity_passphrase)
			passphrase = xstrdup(identity_passphrase);
		else if (identity_new_passphrase)

		    &private, &comment)) != 0) {
			explicit_bzero(passphrase, strlen(passphrase));
			free(passphrase);
			fatal("Cannot load private key \"%s\": %s.",
			    identity_file, ssh_err(r));
			exit(1);
		}
	}
	/* XXX what about new-format keys? */
	if (private->type != KEY_RSA1) {
		error("Comments are only supported for RSA1 keys.");
		explicit_bzero(passphrase, strlen(passphrase));
		sshkey_free(private);
		exit(1);

	/* Save the file using the new passphrase. */
	if ((r = sshkey_save_private(private, identity_file, passphrase,
	    new_comment, use_new_format, new_format_cipher, rounds)) != 0) {
		error("Saving key \"%s\" failed: %s",
		    identity_file, ssh_err(r));
		explicit_bzero(passphrase, strlen(passphrase));
		free(passphrase);


	strlcat(identity_file, ".pub", sizeof(identity_file));
	fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
	if (fd == -1)
		fatal("Could not save your public key in %s", identity_file);
		exit(1);
	}
	f = fdopen(fd, "w");
	if (f == NULL)
		fatal("fdopen %s failed: %s", identity_file, strerror(errno));
		exit(1);
	}
	if ((r = sshkey_write(public, f)) != 0)
		fatal("write key failed: %s", ssh_err(r));
	sshkey_free(public);
	fprintf(f, " %s\n", new_comment);
	fclose(f);

				break;
			/* FALLTHROUGH */
		default:
			fatal("unknown key type %s", key_type_name);
			exit(1);
		}
	}



	/* we need this for the home * directory.  */
	pw = getpwuid(getuid());
	if (!pw)
		fatal("No user exists for uid %lu", (u_long)getuid());
	if (gethostname(hostname, sizeof(hostname)) < 0)
		fatal("gethostname: %s", strerror(errno));
	if (gethostname(hostname, sizeof(hostname)) < 0) {
		perror("gethostname");
		exit(1);
	}

	/* Remaining characters: UYdw */
	while ((opt = getopt(argc, argv, "ABHLQXceghiklopquvxy"


	if (ca_key_path != NULL) {
		if (argc < 1 && !gen_krl) {
			error("Too few arguments.");
			usage();
		}
	} else if (argc > 0 && !gen_krl && !check_krl) {
		error("Too many arguments.");
		usage();
	}
	if (change_passphrase && change_comment) {
		error("Can only have one of -p and -c.");
		usage();
	}
	if (print_fingerprint && (delete_host || hash_hosts)) {
		error("Cannot use -l with -H or -R.");
		usage();
	}
#ifdef WITH_OPENSSL

		if (have_identity) {
			n = do_print_resource_record(pw,
			    identity_file, rr_hostname);
			if (n == 0)
				fatal("%s: %s", identity_file, strerror(errno));
				exit(1);
			}
			exit(0);
		} else {


	if (!quiet)
		printf("Generating public/private %s key pair.\n",
		    key_type_name);
	if ((r = sshkey_generate(type, bits, &private)) != 0)
		fatal("key_generate failed");
	if ((r = sshkey_from_private(private, &public)) != 0)
		fatal("key_from_private failed: %s\n", ssh_err(r));
	if ((r = sshkey_from_private(private, &public)) != 0) {
		fprintf(stderr, "key_from_private failed: %s\n", ssh_err(r));
		exit(1);
	}

	if (!have_identity)
		ask_filename(pw, "Enter file in which to save the key");

	/* Save the key with the given passphrase and comment. */
	if ((r = sshkey_save_private(private, identity_file, passphrase1,
	    comment, use_new_format, new_format_cipher, rounds)) != 0) {
		error("Saving key \"%s\" failed: %s",
		    identity_file, ssh_err(r));
		explicit_bzero(passphrase1, strlen(passphrase1));
		free(passphrase1);

		printf("Your identification has been saved in %s.\n", identity_file);

	strlcat(identity_file, ".pub", sizeof(identity_file));
	if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
		fatal("Unable to save public key to %s: %s",
		    identity_file, strerror(errno));
	if ((f = fdopen(fd, "w")) == NULL)
		fatal("fdopen %s failed: %s", identity_file, strerror(errno));
	f = fdopen(fd, "w");
	if (f == NULL) {
		printf("fdopen %s failed\n", identity_file);
		exit(1);
	}
	if ((r = sshkey_write(public, f)) != 0)
		error("write key failed: %s", ssh_err(r));
	fprintf(f, " %s\n", comment);
	fclose(f);


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