diff options
Diffstat (limited to 'usr/src/cmd/ssh/ssh-keygen/ssh-keygen.c')
| -rw-r--r-- | usr/src/cmd/ssh/ssh-keygen/ssh-keygen.c | 1208 |
1 files changed, 0 insertions, 1208 deletions
diff --git a/usr/src/cmd/ssh/ssh-keygen/ssh-keygen.c b/usr/src/cmd/ssh/ssh-keygen/ssh-keygen.c deleted file mode 100644 index ebad79b0f8..0000000000 --- a/usr/src/cmd/ssh/ssh-keygen/ssh-keygen.c +++ /dev/null @@ -1,1208 +0,0 @@ -/* - * Author: Tatu Ylonen <ylo@cs.hut.fi> - * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland - * All rights reserved - * Identity and host key generation and maintenance. - * - * 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". - */ - -/* $OpenBSD: ssh-keygen.c,v 1.160 2007/01/21 01:41:54 stevesk Exp $ */ - -#include "includes.h" -#include <openssl/evp.h> -#include <openssl/pem.h> - -#include "xmalloc.h" -#include "key.h" -#include "rsa.h" -#include "authfile.h" -#include "uuencode.h" -#include "buffer.h" -#include "bufaux.h" -#include "pathnames.h" -#include "log.h" -#include "readpass.h" -#include "misc.h" -#include <langinfo.h> -#include "match.h" -#include "hostfile.h" -#include "tildexpand.h" - -/* Number of bits in the RSA/DSA key. This value can be set on the command line. */ -#define DEFAULT_BITS_RSA 2048 -#define DEFAULT_BITS_DSA 1024 -u_int32_t bits = 0; - -/* - * Flag indicating that we just want to change the passphrase. This can be - * set on the command line. - */ -int change_passphrase = 0; - -/* - * Flag indicating that we just want to change the comment. This can be set - * on the command line. - */ -int change_comment = 0; - -int quiet = 0; - -/* Flag indicating that we want to hash a known_hosts file */ -int hash_hosts = 0; -/* Flag indicating that we want to lookup a host in known_hosts file */ -int find_host = 0; -/* Flag indicating that we want to delete a host from a known_hosts file */ -int delete_host = 0; - -/* Flag indicating that we just want to see the key fingerprint */ -int print_fingerprint = 0; -int print_bubblebabble = 0; - -/* The identity file name, given on the command line or entered by the user. */ -char identity_file[1024]; -int have_identity = 0; - -/* This is set to the passphrase if given on the command line. */ -char *identity_passphrase = NULL; - -/* This is set to the new passphrase if given on the command line. */ -char *identity_new_passphrase = NULL; - -/* This is set to the new comment if given on the command line. */ -char *identity_comment = NULL; - -/* Dump public key file in format used by real and the original SSH 2 */ -int convert_to_ssh2 = 0; -int convert_from_ssh2 = 0; -int print_public = 0; - -char *key_type_name = NULL; - -/* argv0 */ -#ifdef HAVE___PROGNAME -extern char *__progname; -#else -char *__progname; -#endif - -char hostname[MAXHOSTNAMELEN]; - -static void -ask_filename(struct passwd *pw, const char *prompt) -{ - char buf[1024]; - char *name = NULL; - - if (key_type_name == NULL) - name = _PATH_SSH_CLIENT_ID_RSA; - else { - switch (key_type_from_name(key_type_name)) { - case KEY_RSA1: - name = _PATH_SSH_CLIENT_IDENTITY; - break; - case KEY_DSA: - name = _PATH_SSH_CLIENT_ID_DSA; - break; - case KEY_RSA: - name = _PATH_SSH_CLIENT_ID_RSA; - break; - default: - fprintf(stderr, gettext("bad key type")); - exit(1); - break; - } - } - snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name); - fprintf(stderr, "%s (%s): ", gettext(prompt), identity_file); - if (fgets(buf, sizeof(buf), stdin) == NULL) - exit(1); - if (strchr(buf, '\n')) - *strchr(buf, '\n') = 0; - if (strcmp(buf, "") != 0) - strlcpy(identity_file, buf, sizeof(identity_file)); - have_identity = 1; -} - -static Key * -load_identity(char *filename) -{ - char *pass; - Key *prv; - - prv = key_load_private(filename, "", NULL); - if (prv == NULL) { - if (identity_passphrase) - pass = xstrdup(identity_passphrase); - else - pass = read_passphrase(gettext("Enter passphrase: "), - RP_ALLOW_STDIN); - prv = key_load_private(filename, pass, NULL); - memset(pass, 0, strlen(pass)); - xfree(pass); - } - return prv; -} - -#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----" -#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----" -#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----" -#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb - -static void -do_convert_to_ssh2(struct passwd *pw) -{ - Key *k; - u_int len; - u_char *blob; - struct stat st; - - if (!have_identity) - ask_filename(pw, gettext("Enter file in which the key is")); - if (stat(identity_file, &st) < 0) { - perror(identity_file); - exit(1); - } - if ((k = key_load_public(identity_file, NULL)) == NULL) { - if ((k = load_identity(identity_file)) == NULL) { - fprintf(stderr, gettext("load failed\n")); - exit(1); - } - } - if (key_to_blob(k, &blob, &len) <= 0) { - fprintf(stderr, gettext("key_to_blob failed\n")); - exit(1); - } - fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); - fprintf(stdout, gettext( - "Comment: \"%u-bit %s, converted from OpenSSH by %s@%s\"\n"), - key_size(k), key_type(k), - pw->pw_name, hostname); - dump_base64(stdout, blob, len); - fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END); - key_free(k); - xfree(blob); - exit(0); -} - -static void -buffer_get_bignum_bits(Buffer *b, BIGNUM *value) -{ - u_int bignum_bits = buffer_get_int(b); - u_int bytes = (bignum_bits + 7) / 8; - - if (buffer_len(b) < bytes) - fatal("buffer_get_bignum_bits: input buffer too small: " - "need %d have %d", bytes, buffer_len(b)); - if (BN_bin2bn(buffer_ptr(b), bytes, value) == NULL) - fatal("buffer_get_bignum_bits: BN_bin2bn failed"); - buffer_consume(b, bytes); -} - -static Key * -do_convert_private_ssh2_from_blob(u_char *blob, u_int blen) -{ - Buffer b; - Key *key = NULL; - char *type, *cipher; - u_char *sig, data[] = "abcde12345"; - int magic, rlen, ktype, i1, i2, i3, i4; - u_int slen; - u_long e; - - buffer_init(&b); - buffer_append(&b, blob, blen); - - magic = buffer_get_int(&b); - if (magic != SSH_COM_PRIVATE_KEY_MAGIC) { - error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC); - buffer_free(&b); - return NULL; - } - i1 = buffer_get_int(&b); - type = buffer_get_string(&b, NULL); - cipher = buffer_get_string(&b, NULL); - i2 = buffer_get_int(&b); - i3 = buffer_get_int(&b); - i4 = buffer_get_int(&b); - debug("ignore (%d %d %d %d)", i1, i2, i3, i4); - if (strcmp(cipher, "none") != 0) { - error("unsupported cipher %s", cipher); - xfree(cipher); - buffer_free(&b); - xfree(type); - return NULL; - } - xfree(cipher); - - if (strstr(type, "dsa")) { - ktype = KEY_DSA; - } else if (strstr(type, "rsa")) { - ktype = KEY_RSA; - } else { - buffer_free(&b); - xfree(type); - return NULL; - } - key = key_new_private(ktype); - xfree(type); - - switch (key->type) { - case KEY_DSA: - buffer_get_bignum_bits(&b, key->dsa->p); - buffer_get_bignum_bits(&b, key->dsa->g); - buffer_get_bignum_bits(&b, key->dsa->q); - buffer_get_bignum_bits(&b, key->dsa->pub_key); - buffer_get_bignum_bits(&b, key->dsa->priv_key); - break; - case KEY_RSA: - e = buffer_get_char(&b); - debug("e %lx", e); - if (e < 30) { - e <<= 8; - e += buffer_get_char(&b); - debug("e %lx", e); - e <<= 8; - e += buffer_get_char(&b); - debug("e %lx", e); - } - if (!BN_set_word(key->rsa->e, e)) { - buffer_free(&b); - key_free(key); - return NULL; - } - buffer_get_bignum_bits(&b, key->rsa->d); - buffer_get_bignum_bits(&b, key->rsa->n); - buffer_get_bignum_bits(&b, key->rsa->iqmp); - buffer_get_bignum_bits(&b, key->rsa->q); - buffer_get_bignum_bits(&b, key->rsa->p); - rsa_generate_additional_parameters(key->rsa); - break; - } - rlen = buffer_len(&b); - if (rlen != 0) - error("do_convert_private_ssh2_from_blob: " - "remaining bytes in key blob %d", rlen); - buffer_free(&b); - - /* try the key */ - key_sign(key, &sig, &slen, data, sizeof(data)); - key_verify(key, sig, slen, data, sizeof(data)); - xfree(sig); - return key; -} - -static int -get_line(FILE *fp, char *line, size_t len) -{ - int c; - size_t pos = 0; - - line[0] = '\0'; - while ((c = fgetc(fp)) != EOF) { - if (pos >= len - 1) { - fprintf(stderr, "input line too long.\n"); - exit(1); - } - switch (c) { - case '\r': - c = fgetc(fp); - if (c != EOF && c != '\n' && ungetc(c, fp) == EOF) { - fprintf(stderr, "unget: %s\n", strerror(errno)); - exit(1); - } - return pos; - case '\n': - return pos; - } - line[pos++] = c; - line[pos] = '\0'; - } - /* We reached EOF */ - return -1; -} - -static void -do_convert_from_ssh2(struct passwd *pw) -{ - Key *k; - int blen; - u_int len; - char line[1024]; - u_char blob[8096]; - char encoded[8096]; - struct stat st; - int escaped = 0, private = 0, ok; - FILE *fp; - - if (!have_identity) - ask_filename(pw, gettext("Enter file in which the key is")); - if (stat(identity_file, &st) < 0) { - perror(identity_file); - exit(1); - } - fp = fopen(identity_file, "r"); - if (fp == NULL) { - perror(identity_file); - exit(1); - } - encoded[0] = '\0'; - while ((blen = get_line(fp, line, sizeof(line))) != -1) { - if (line[blen - 1] == '\\') - escaped++; - if (strncmp(line, "----", 4) == 0 || - strstr(line, ": ") != NULL) { - if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL) - private = 1; - if (strstr(line, " END ") != NULL) { - break; - } - /* fprintf(stderr, "ignore: %s", line); */ - continue; - } - if (escaped) { - escaped--; - /* fprintf(stderr, "escaped: %s", line); */ - continue; - } - strlcat(encoded, line, sizeof(encoded)); - } - len = strlen(encoded); - if (((len % 4) == 3) && - (encoded[len-1] == '=') && - (encoded[len-2] == '=') && - (encoded[len-3] == '=')) - encoded[len-3] = '\0'; - blen = uudecode(encoded, blob, sizeof(blob)); - if (blen < 0) { - fprintf(stderr, gettext("uudecode failed.\n")); - exit(1); - } - k = private ? - do_convert_private_ssh2_from_blob(blob, blen) : - key_from_blob(blob, blen); - if (k == NULL) { - fprintf(stderr, gettext("decode blob failed.\n")); - exit(1); - } - ok = private ? - (k->type == KEY_DSA ? - PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) : - PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) : - key_write(k, stdout); - if (!ok) { - fprintf(stderr, gettext("key write failed")); - exit(1); - } - key_free(k); - if (!private) - fprintf(stdout, "\n"); - fclose(fp); - exit(0); -} - -static void -do_print_public(struct passwd *pw) -{ - Key *prv; - struct stat st; - - if (!have_identity) - ask_filename(pw, gettext("Enter file in which the key is")); - if (stat(identity_file, &st) < 0) { - perror(identity_file); - exit(1); - } - prv = load_identity(identity_file); - if (prv == NULL) { - fprintf(stderr, gettext("load failed\n")); - exit(1); - } - if (!key_write(prv, stdout)) - fprintf(stderr, gettext("key_write failed")); - key_free(prv); - fprintf(stdout, "\n"); - exit(0); -} - -static void -do_fingerprint(struct passwd *pw) -{ - FILE *f; - Key *public; - char *comment = NULL, *cp, *ep, line[16*1024], *fp; - int i, skip = 0, num = 1, invalid = 1; - enum fp_rep rep; - enum fp_type fptype; - struct stat st; - - fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5; - rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX; - - if (!have_identity) - ask_filename(pw, gettext("Enter file in which the key is")); - if (stat(identity_file, &st) < 0) { - perror(identity_file); - exit(1); - } - public = key_load_public(identity_file, &comment); - if (public != NULL) { - fp = key_fingerprint(public, fptype, rep); - printf("%u %s %s\n", key_size(public), fp, comment); - key_free(public); - xfree(comment); - xfree(fp); - exit(0); - } - if (comment) { - xfree(comment); - comment = NULL; - } - - f = fopen(identity_file, "r"); - if (f != NULL) { - while (fgets(line, sizeof(line), f)) { - i = strlen(line) - 1; - if (line[i] != '\n') { - error("line %d too long: %.40s...", num, line); - skip = 1; - continue; - } - num++; - if (skip) { - skip = 0; - continue; - } - line[i] = '\0'; - - /* Skip leading whitespace, empty and comment lines. */ - for (cp = line; *cp == ' ' || *cp == '\t'; cp++) - ; - if (!*cp || *cp == '\n' || *cp == '#') - continue; - i = strtol(cp, &ep, 10); - if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) { - int quoted = 0; - comment = cp; - for (; *cp && (quoted || (*cp != ' ' && - *cp != '\t')); cp++) { - if (*cp == '\\' && cp[1] == '"') - cp++; /* Skip both */ - else if (*cp == '"') - quoted = !quoted; - } - if (!*cp) - continue; - *cp++ = '\0'; - } - ep = cp; - public = key_new(KEY_RSA1); - if (key_read(public, &cp) != 1) { - cp = ep; - key_free(public); - public = key_new(KEY_UNSPEC); - if (key_read(public, &cp) != 1) { - key_free(public); - continue; - } - } - comment = *cp ? cp : comment; - fp = key_fingerprint(public, fptype, rep); - printf("%u %s %s\n", key_size(public), fp, - comment ? comment : gettext("no comment")); - xfree(fp); - key_free(public); - invalid = 0; - } - fclose(f); - } - if (invalid) { - printf(gettext("%s is not a public key file.\n"), - identity_file); - exit(1); - } - exit(0); -} - -static void -print_host(FILE *f, const char *name, Key *public, int hash) -{ - if (hash && (name = host_hash(name, NULL, 0)) == NULL) - fatal("hash_host failed"); - fprintf(f, "%s ", name); - if (!key_write(public, f)) - fatal("key_write failed"); - fprintf(f, "\n"); -} - -static void -do_known_hosts(struct passwd *pw, const char *name) -{ - FILE *in, *out = stdout; - Key *public; - char *cp, *cp2, *kp, *kp2; - char line[16*1024], tmp[MAXPATHLEN], old[MAXPATHLEN]; - int c, i, skip = 0, inplace = 0, num = 0, invalid = 0, has_unhashed = 0; - - if (!have_identity) { - cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid); - if (strlcpy(identity_file, cp, sizeof(identity_file)) >= - sizeof(identity_file)) - fatal("Specified known hosts path too long"); - xfree(cp); - have_identity = 1; - } - if ((in = fopen(identity_file, "r")) == NULL) - fatal("fopen: %s", strerror(errno)); - - /* - * Find hosts goes to stdout, hash and deletions happen in-place - * A corner case is ssh-keygen -HF foo, which should go to stdout - */ - if (!find_host && (hash_hosts || delete_host)) { - if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) || - strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) || - strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) || - strlcat(old, ".old", sizeof(old)) >= sizeof(old)) - fatal("known_hosts path too long"); - umask(077); - if ((c = mkstemp(tmp)) == -1) - fatal("mkstemp: %s", strerror(errno)); - if ((out = fdopen(c, "w")) == NULL) { - c = errno; - unlink(tmp); - fatal("fdopen: %s", strerror(c)); - } - inplace = 1; - } - - while (fgets(line, sizeof(line), in)) { - num++; - i = strlen(line) - 1; - if (line[i] != '\n') { - error("line %d too long: %.40s...", num, line); - skip = 1; - invalid = 1; - continue; - } - if (skip) { - skip = 0; - continue; - } - line[i] = '\0'; - - /* Skip leading whitespace, empty and comment lines. */ - for (cp = line; *cp == ' ' || *cp == '\t'; cp++) - ; - if (!*cp || *cp == '\n' || *cp == '#') { - if (inplace) - fprintf(out, "%s\n", cp); - continue; - } - /* Find the end of the host name portion. */ - for (kp = cp; *kp && *kp != ' ' && *kp != '\t'; kp++) - ; - if (*kp == '\0' || *(kp + 1) == '\0') { - error("line %d missing key: %.40s...", - num, line); - invalid = 1; - continue; - } - *kp++ = '\0'; - kp2 = kp; - - public = key_new(KEY_RSA1); - if (key_read(public, &kp) != 1) { - kp = kp2; - key_free(public); - public = key_new(KEY_UNSPEC); - if (key_read(public, &kp) != 1) { - error("line %d invalid key: %.40s...", - num, line); - key_free(public); - invalid = 1; - continue; - } - } - - if (*cp == HASH_DELIM) { - if (find_host || delete_host) { - cp2 = host_hash(name, cp, strlen(cp)); - if (cp2 == NULL) { - error("line %d: invalid hashed " - "name: %.64s...", num, line); - invalid = 1; - continue; - } - c = (strcmp(cp2, cp) == 0); - if (find_host && c) { - printf(gettext("# Host %s found: " - "line %d type %s\n"), name, - num, key_type(public)); - print_host(out, cp, public, 0); - } - if (delete_host && !c) - print_host(out, cp, public, 0); - } else if (hash_hosts) - print_host(out, cp, public, 0); - } else { - if (find_host || delete_host) { - c = (match_hostname(name, cp, - strlen(cp)) == 1); - if (find_host && c) { - printf(gettext("# Host %s found: " - "line %d type %s\n"), name, - num, key_type(public)); - print_host(out, name, public, hash_hosts); - } - if (delete_host && !c) - print_host(out, cp, public, 0); - } else if (hash_hosts) { - for (cp2 = strsep(&cp, ","); - cp2 != NULL && *cp2 != '\0'; - cp2 = strsep(&cp, ",")) { - if (strcspn(cp2, "*?!") != strlen(cp2)) - fprintf(stderr, gettext("Warning: " - "ignoring host name with " - "metacharacters: %.64s\n"), - cp2); - else - print_host(out, cp2, public, 1); - } - has_unhashed = 1; - } - } - key_free(public); - } - fclose(in); - - if (invalid) { - fprintf(stderr, gettext("%s is not a valid known_host file.\n"), - identity_file); - if (inplace) { - fprintf(stderr, gettext("Not replacing existing known_hosts " - "file because of errors\n")); - fclose(out); - unlink(tmp); - } - exit(1); - } - - if (inplace) { - fclose(out); - - /* Backup existing file */ - if (unlink(old) == -1 && errno != ENOENT) - fatal("unlink %.100s: %s", old, strerror(errno)); - if (link(identity_file, old) == -1) - fatal("link %.100s to %.100s: %s", identity_file, old, - strerror(errno)); - /* Move new one into place */ - if (rename(tmp, identity_file) == -1) { - error("rename\"%s\" to \"%s\": %s", tmp, identity_file, - strerror(errno)); - unlink(tmp); - unlink(old); - exit(1); - } - - fprintf(stderr, gettext("%s updated.\n"), identity_file); - fprintf(stderr, gettext("Original contents retained as %s\n"), old); - if (has_unhashed) { - fprintf(stderr, gettext("WARNING: %s contains unhashed " - "entries\n"), old); - fprintf(stderr, gettext("Delete this file to ensure privacy " - "of hostnames\n")); - } - } - - exit(0); -} - -/* - * Perform changing a passphrase. The argument is the passwd structure - * for the current user. - */ -static void -do_change_passphrase(struct passwd *pw) -{ - char *comment; - char *old_passphrase, *passphrase1, *passphrase2; - struct stat st; - Key *private; - - if (!have_identity) - ask_filename(pw, gettext("Enter file in which the key is")); - if (stat(identity_file, &st) < 0) { - perror(identity_file); - exit(1); - } - /* Try to load the file with empty passphrase. */ - private = key_load_private(identity_file, "", &comment); - if (private == NULL) { - if (identity_passphrase) - old_passphrase = xstrdup(identity_passphrase); - else - old_passphrase = - read_passphrase(gettext("Enter old passphrase: "), - RP_ALLOW_STDIN); - private = key_load_private(identity_file, old_passphrase, - &comment); - memset(old_passphrase, 0, strlen(old_passphrase)); - xfree(old_passphrase); - if (private == NULL) { - printf(gettext("Bad passphrase.\n")); - exit(1); - } - } - printf(gettext("Key has comment '%s'\n"), comment); - - /* Ask the new passphrase (twice). */ - if (identity_new_passphrase) { - passphrase1 = xstrdup(identity_new_passphrase); - passphrase2 = NULL; - } else { - passphrase1 = - read_passphrase(gettext("Enter new passphrase (empty" - " for no passphrase): "), RP_ALLOW_STDIN); - passphrase2 = read_passphrase(gettext("Enter same " - "passphrase again: "), RP_ALLOW_STDIN); - - /* Verify that they are the same. */ - if (strcmp(passphrase1, passphrase2) != 0) { - memset(passphrase1, 0, strlen(passphrase1)); - memset(passphrase2, 0, strlen(passphrase2)); - xfree(passphrase1); - xfree(passphrase2); - printf(gettext("Pass phrases do not match. Try " - "again.\n")); - exit(1); - } - /* Destroy the other copy. */ - memset(passphrase2, 0, strlen(passphrase2)); - xfree(passphrase2); - } - - /* Save the file using the new passphrase. */ - if (!key_save_private(private, identity_file, passphrase1, comment)) { - printf(gettext("Saving the key failed: %s.\n"), identity_file); - memset(passphrase1, 0, strlen(passphrase1)); - xfree(passphrase1); - key_free(private); - xfree(comment); - exit(1); - } - /* Destroy the passphrase and the copy of the key in memory. */ - memset(passphrase1, 0, strlen(passphrase1)); - xfree(passphrase1); - key_free(private); /* Destroys contents */ - xfree(comment); - - printf(gettext("Your identification has been saved with the new " - "passphrase.\n")); - exit(0); -} - -/* - * Change the comment of a private key file. - */ -static void -do_change_comment(struct passwd *pw) -{ - char new_comment[1024], *comment, *passphrase; - Key *private; - Key *public; - struct stat st; - FILE *f; - int fd; - - if (!have_identity) - ask_filename(pw, gettext("Enter file in which the key is")); - if (stat(identity_file, &st) < 0) { - perror(identity_file); - exit(1); - } - private = key_load_private(identity_file, "", &comment); - if (private == NULL) { - if (identity_passphrase) - passphrase = xstrdup(identity_passphrase); - else if (identity_new_passphrase) - passphrase = xstrdup(identity_new_passphrase); - else - passphrase = - read_passphrase(gettext("Enter passphrase: "), - RP_ALLOW_STDIN); - /* Try to load using the passphrase. */ - private = key_load_private(identity_file, passphrase, &comment); - if (private == NULL) { - memset(passphrase, 0, strlen(passphrase)); - xfree(passphrase); - printf(gettext("Bad passphrase.\n")); - exit(1); - } - } else { - passphrase = xstrdup(""); - } - if (private->type != KEY_RSA1) { - fprintf(stderr, gettext("Comments are only supported for " - "RSA1 keys.\n")); - key_free(private); - exit(1); - } - printf(gettext("Key now has comment '%s'\n"), comment); - - if (identity_comment) { - strlcpy(new_comment, identity_comment, sizeof(new_comment)); - } else { - printf(gettext("Enter new comment: ")); - fflush(stdout); - if (!fgets(new_comment, sizeof(new_comment), stdin)) { - memset(passphrase, 0, strlen(passphrase)); - key_free(private); - exit(1); - } - if (strchr(new_comment, '\n')) - *strchr(new_comment, '\n') = 0; - } - - /* Save the file using the new passphrase. */ - if (!key_save_private(private, identity_file, passphrase, new_comment)) { - printf(gettext("Saving the key failed: %s.\n"), identity_file); - memset(passphrase, 0, strlen(passphrase)); - xfree(passphrase); - key_free(private); - xfree(comment); - exit(1); - } - memset(passphrase, 0, strlen(passphrase)); - xfree(passphrase); - public = key_from_private(private); - key_free(private); - - strlcat(identity_file, ".pub", sizeof(identity_file)); - fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); - if (fd == -1) { - printf(gettext("Could not save your public key in %s\n"), - identity_file); - exit(1); - } - f = fdopen(fd, "w"); - if (f == NULL) { - printf(gettext("fdopen %s failed"), identity_file); - exit(1); - } - if (!key_write(public, f)) - fprintf(stderr, gettext("write key failed")); - key_free(public); - fprintf(f, " %s\n", new_comment); - fclose(f); - - xfree(comment); - - printf(gettext("The comment in your key file has been changed.\n")); - exit(0); -} - -static void -usage(void) -{ - fprintf(stderr, gettext( - "Usage: %s [options]\n" - "Options:\n" - " -b bits Number of bits in the key to create.\n" - " -B Show bubblebabble digest of key file.\n" - " -c Change comment in private and public key files.\n" - " -C comment Provide new comment.\n" - " -e Convert OpenSSH to IETF SECSH key file.\n" - " -f filename Filename of the key file.\n" - " -F hostname Find hostname in known hosts file.\n" - " -H Hash names in known_hosts file.\n" - " -i Convert IETF SECSH to OpenSSH key file.\n" - " -l Show fingerprint of key file.\n" - " -N phrase Provide new passphrase.\n" - " -p Change passphrase of private key file.\n" - " -P phrase Provide old passphrase.\n" - " -q Quiet.\n" - " -R hostname Remove host from known_hosts file.\n" - " -t type Specify type of key to create.\n" - " -y Read private key file and print public key.\n" - ), __progname); - - exit(1); -} - -/* - * Main program for key management. - */ -int -main(int argc, char **argv) -{ - char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2; - char *rr_hostname = NULL; - Key *private, *public; - struct passwd *pw; - struct stat st; - int opt, type, fd; - FILE *f; - - extern int optind; - extern char *optarg; - - /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ - sanitise_stdfd(); - - __progname = get_progname(argv[0]); - - g11n_setlocale(LC_ALL, ""); - - SSLeay_add_all_algorithms(); - init_rng(); - seed_rng(); - - /* we need this for the home * directory. */ - pw = getpwuid(getuid()); - if (!pw) { - printf(gettext("You don't exist, go away!\n")); - exit(1); - } - if (gethostname(hostname, sizeof(hostname)) < 0) { - perror("gethostname"); - exit(1); - } - -#define GETOPT_ARGS "BcdeHilpqxXyb:C:f:F:N:P:R:t:" - - while ((opt = getopt(argc, argv, GETOPT_ARGS)) != -1) { - switch (opt) { - case 'b': - bits = atoi(optarg); - if (bits < 512 || bits > 32768) { - printf(gettext("Bits has bad value.\n")); - exit(1); - } - break; - case 'F': - find_host = 1; - rr_hostname = optarg; - break; - case 'H': - hash_hosts = 1; - break; - case 'R': - delete_host = 1; - rr_hostname = optarg; - break; - case 'l': - print_fingerprint = 1; - break; - case 'B': - print_bubblebabble = 1; - break; - case 'p': - change_passphrase = 1; - break; - case 'c': - change_comment = 1; - break; - case 'f': - strlcpy(identity_file, optarg, sizeof(identity_file)); - have_identity = 1; - break; - case 'P': - identity_passphrase = optarg; - break; - case 'N': - identity_new_passphrase = optarg; - break; - case 'C': - identity_comment = optarg; - break; - case 'q': - quiet = 1; - break; - case 'e': - case 'x': - /* export key */ - convert_to_ssh2 = 1; - break; - case 'i': - case 'X': - /* import key */ - convert_from_ssh2 = 1; - break; - case 'y': - print_public = 1; - break; - case 'd': - key_type_name = "dsa"; - break; - case 't': - key_type_name = optarg; - break; - case '?': - default: - usage(); - } - } - if (optind < argc) { - printf(gettext("Too many arguments.\n")); - usage(); - } - if (change_passphrase && change_comment) { - printf(gettext("Can only have one of -p and -c.\n")); - usage(); - } - if (delete_host || hash_hosts || find_host) - do_known_hosts(pw, rr_hostname); - if (print_fingerprint || print_bubblebabble) - do_fingerprint(pw); - if (change_passphrase) - do_change_passphrase(pw); - if (change_comment) - do_change_comment(pw); - if (convert_to_ssh2) - do_convert_to_ssh2(pw); - if (convert_from_ssh2) - do_convert_from_ssh2(pw); - if (print_public) - do_print_public(pw); - - arc4random_stir(); - - if (key_type_name == NULL) { - printf(gettext("You must specify a key type (-t).\n")); - usage(); - } - type = key_type_from_name(key_type_name); - if (type == KEY_UNSPEC) { - fprintf(stderr, gettext("unknown key type %s\n"), - key_type_name); - exit(1); - } - if (bits == 0) - bits = (type == KEY_DSA) ? DEFAULT_BITS_DSA : DEFAULT_BITS_RSA; - - if (!quiet) - printf(gettext("Generating public/private %s key pair.\n"), - key_type_name); - private = key_generate(type, bits); - if (private == NULL) { - fprintf(stderr, gettext("key_generate failed")); - exit(1); - } - public = key_from_private(private); - - if (!have_identity) - ask_filename(pw, gettext("Enter file in which to save the key")); - - /* Create ~/.ssh directory if it doesn't already exist. */ - snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR); - if (strstr(identity_file, dotsshdir) != NULL && - stat(dotsshdir, &st) < 0) { - if (mkdir(dotsshdir, 0700) < 0) - error("Could not create directory '%s'.", dotsshdir); - else if (!quiet) - printf(gettext("Created directory '%s'.\n"), dotsshdir); - } - /* If the file already exists, ask the user to confirm. */ - if (stat(identity_file, &st) >= 0) { - char yesno[128]; - printf(gettext("%s already exists.\n"), identity_file); - printf(gettext("Overwrite (%s/%s)? "), - nl_langinfo(YESSTR), nl_langinfo(NOSTR)); - fflush(stdout); - if (fgets(yesno, sizeof(yesno), stdin) == NULL) - exit(1); - if (strcasecmp(chop(yesno), nl_langinfo(YESSTR)) != 0) - exit(1); - } - /* Ask for a passphrase (twice). */ - if (identity_passphrase) - passphrase1 = xstrdup(identity_passphrase); - else if (identity_new_passphrase) - passphrase1 = xstrdup(identity_new_passphrase); - else { -passphrase_again: - passphrase1 = - read_passphrase(gettext("Enter passphrase (empty " - "for no passphrase): "), RP_ALLOW_STDIN); - passphrase2 = read_passphrase(gettext("Enter same " - "passphrase again: "), RP_ALLOW_STDIN); - if (strcmp(passphrase1, passphrase2) != 0) { - /* - * The passphrases do not match. Clear them and - * retry. - */ - memset(passphrase1, 0, strlen(passphrase1)); - memset(passphrase2, 0, strlen(passphrase2)); - xfree(passphrase1); - xfree(passphrase2); - printf(gettext("Passphrases do not match. Try " - "again.\n")); - goto passphrase_again; - } - /* Clear the other copy of the passphrase. */ - memset(passphrase2, 0, strlen(passphrase2)); - xfree(passphrase2); - } - - if (identity_comment) { - strlcpy(comment, identity_comment, sizeof(comment)); - } else { - /* Create default commend field for the passphrase. */ - snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname); - } - - /* Save the key with the given passphrase and comment. */ - if (!key_save_private(private, identity_file, passphrase1, comment)) { - printf(gettext("Saving the key failed: %s.\n"), identity_file); - memset(passphrase1, 0, strlen(passphrase1)); - xfree(passphrase1); - exit(1); - } - /* Clear the passphrase. */ - memset(passphrase1, 0, strlen(passphrase1)); - xfree(passphrase1); - - /* Clear the private key and the random number generator. */ - key_free(private); - arc4random_stir(); - - if (!quiet) - printf(gettext("Your identification has been saved in %s.\n"), - identity_file); - - strlcat(identity_file, ".pub", sizeof(identity_file)); - fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); - if (fd == -1) { - printf(gettext("Could not save your public key in %s\n"), - identity_file); - exit(1); - } - f = fdopen(fd, "w"); - if (f == NULL) { - printf(gettext("fdopen %s failed"), identity_file); - exit(1); - } - if (!key_write(public, f)) - fprintf(stderr, gettext("write key failed")); - fprintf(f, " %s\n", comment); - fclose(f); - - if (!quiet) { - char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX); - printf(gettext("Your public key has been saved in %s.\n"), - identity_file); - printf(gettext("The key fingerprint is:\n")); - printf("%s %s\n", fp, comment); - xfree(fp); - } - - key_free(public); - return(0); - /* NOTREACHED */ -} |