--- /dev/null
+/*
+ * Copyright 1998, David E. Storey, All rights reserved.
+ * This software is not subject to any license of The Murphy Group, Inc.
+ * or George Mason University.
+ *
+ * Redistribution and use in source and binary forms are permitted only
+ * as authorized by the OpenLDAP Public License. A copy of this
+ * license is available at http://www.OpenLDAP.org/license.html or
+ * in file LICENSE in the top-level directory of the distribution.
+ *
+ * ldappasswd.c - program to modify passwords in an LDAP tree
+ *
+ * Author: David E. Storey <dave@tamos.net>
+ */
+
+#include "portable.h"
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+
+#include <ac/string.h>
+#include <ac/unistd.h>
+
+#include <lber.h>
+#include <ldap.h>
+#include <lutil.h>
+#include <lutil_md5.h>
+#include <lutil_sha1.h>
+
+#include "ldapconfig.h"
+
+/* local macros */
+#define CEILING(x) ((double)x > (int)x ? (int)x + 1 : (int)x)
+#define STRDUP(x) (x ? strcpy(malloc(strlen(x) + 1), x) : NULL)
+
+#define LDAP_PASSWD_ATTRIB "userPassword"
+#define LDAP_PASSWD_CONF DEFAULT_SYSCONFDIR"/passwd.conf"
+
+#define HS_NONE 0
+#define HS_PLAIN 1
+#define HS_CONV 2
+
+typedef enum
+{
+ HASHTYPE_NONE,
+ HASHTYPE_CRYPT,
+ HASHTYPE_MD5,
+ HASHTYPE_SMD5,
+ HASHTYPE_SHA1,
+ HASHTYPE_SSHA1
+}
+HashTypes;
+
+typedef struct salt_t
+{
+ unsigned char *salt;
+ unsigned int len;
+}
+Salt;
+
+typedef struct hash_t
+{
+ char *name;
+ unsigned int namesz;
+ char *(*func) (const char *, Salt *);
+ unsigned char takes_salt;
+ HashTypes type;
+ HashTypes type_salted;
+ unsigned int default_salt_len;
+}
+Hash;
+
+static int noupdates = 0;
+static int verbose = 0;
+static int want_entryhash = 0;
+static int auto_gen_pw = 0;
+
+/*** functions ***/
+
+/*
+ * pw_encode() essentially base64 encodes a password and it's salt
+ */
+
+char *
+pw_encode (unsigned char *passwd, Salt * salt, unsigned int len)
+{
+ int salted = salt && salt->salt && salt->len;
+ int b64_len = 0;
+ char *base64digest = NULL;
+ unsigned char *npasswd = passwd;
+
+ if (salted)
+ {
+ npasswd = (unsigned char *)malloc (len + salt->len);
+ memcpy (npasswd, passwd, len);
+ memcpy (&npasswd[len], salt->salt, salt->len);
+ len += salt->len;
+ }
+
+ b64_len = CEILING (len / 3) * 4 + 1;
+ base64digest = (char *)malloc (b64_len);
+ if (lutil_b64_ntop (npasswd, len, base64digest, b64_len) < 0)
+ {
+ free (base64digest);
+ base64digest = NULL;
+ }
+
+ if (salted)
+ free (npasswd);
+
+ return (base64digest);
+}
+
+/*
+ * if you'd like to write a better salt generator, please, be my guest.
+ */
+
+void
+make_salt (Salt * salt, unsigned int len)
+{
+ struct timeval tv;
+
+ if (!salt)
+ return;
+
+ /* seed random number generator */
+ gettimeofday (&tv, NULL);
+ srand (tv.tv_usec);
+
+ salt->len = len;
+ salt->salt = (unsigned char *)malloc (len);
+
+ for (len = 0; len < salt->len; len++)
+ salt->salt[len] = (tv.tv_usec ^ rand ()) & 0xff;
+}
+
+/*
+ * password generator
+ */
+
+char *
+gen_pass (unsigned int len)
+{
+ const unsigned char autogen[] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890.,";
+ int i;
+ Salt salt = {NULL, 0};
+
+ make_salt (&salt, len);
+ for (i = 0; i < len; i++)
+ salt.salt[i] = autogen[salt.salt[i] % (sizeof (autogen) - 1)];
+
+ return ((char *)salt.salt);
+}
+
+#ifdef SLAPD_CLEARTEXT
+char *
+hash_none (const char *pw_in, Salt * salt)
+{
+ return (STRDUP (pw_in));
+}
+#endif
+
+#ifdef SLAPD_CRYPT
+char *
+hash_crypt (const char *pw_in, Salt * salt)
+{
+ const unsigned char crypt64[] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890./";
+ char *crypted_pw = NULL;
+ Salt lsalt;
+
+ if (salt && salt->salt && strlen ((char *)salt->salt) >= 2)
+ {
+ /* sanity check */
+ if (!(isalnum(salt->salt[0]) || salt->salt[0] == '.' || salt->salt[0] == '/'))
+ salt->salt[0] = crypt64[salt->salt[0] % (sizeof (crypt64) - 1)];
+ if (!(isalnum(salt->salt[1]) || salt->salt[1] == '.' || salt->salt[1] == '/'))
+ salt->salt[1] = crypt64[salt->salt[1] % (sizeof (crypt64) - 1)];
+
+ crypted_pw = crypt (pw_in, (char *)salt->salt);
+ }
+ else
+ {
+ make_salt (&lsalt, 2);
+ lsalt.salt[0] = crypt64[lsalt.salt[0] % (sizeof (crypt64) - 1)];
+ lsalt.salt[1] = crypt64[lsalt.salt[1] % (sizeof (crypt64) - 1)];
+ crypted_pw = crypt (pw_in, (char *)lsalt.salt);
+ free (lsalt.salt);
+ }
+ return (STRDUP (crypted_pw));
+}
+#endif
+
+char *
+hash_md5 (const char *pw_in, Salt * salt)
+{
+ lutil_MD5_CTX MD5context;
+ unsigned char MD5digest[16];
+
+ lutil_MD5Init (&MD5context);
+ lutil_MD5Update (&MD5context, pw_in, strlen(pw_in));
+ if (salt && salt->salt && salt->len)
+ lutil_MD5Update (&MD5context, salt->salt, salt->len);
+ lutil_MD5Final (MD5digest, &MD5context);
+
+ return (pw_encode (MD5digest, salt, sizeof (MD5digest)));
+}
+
+char *
+hash_sha1 (const char *pw_in, Salt * salt)
+{
+ lutil_SHA1_CTX SHA1context;
+ unsigned char SHA1digest[20];
+
+ lutil_SHA1Init (&SHA1context);
+ lutil_SHA1Update (&SHA1context, pw_in, strlen(pw_in));
+ if (salt && salt->salt && salt->len)
+ lutil_SHA1Update (&SHA1context, salt->salt, salt->len);
+ lutil_SHA1Final (SHA1digest, &SHA1context);
+
+ return (pw_encode (SHA1digest, salt, sizeof (SHA1digest)));
+}
+
+static Hash hashes[] =
+{
+#ifdef SLAPD_CLEARTEXT
+ {"none", 4, hash_none, 0, HASHTYPE_NONE, HASHTYPE_NONE, 0},
+#endif
+#ifdef SLAPD_CRYPT
+ {"crypt", 5, hash_crypt, 1, HASHTYPE_CRYPT, HASHTYPE_CRYPT, 2},
+#endif
+ {"md5", 3, hash_md5, 0, HASHTYPE_MD5, HASHTYPE_SMD5, 0},
+ {"smd5", 4, hash_md5, 1, HASHTYPE_SMD5, HASHTYPE_SMD5, 4},
+ {"sha", 3, hash_sha1, 0, HASHTYPE_SHA1, HASHTYPE_SSHA1, 0},
+ {"ssha", 4, hash_sha1, 1, HASHTYPE_SSHA1, HASHTYPE_SSHA1, 4},
+ {NULL, 0, NULL, 0, HASHTYPE_NONE, HASHTYPE_NONE, 0}
+};
+
+int
+modify_dn (LDAP * ld, char *targetdn, char *pwattr, char *oldpw,
+ char *newpw, HashTypes htype, Salt * salt)
+{
+ int ret = 0;
+ int salted = salt->salt ? 1 : 0;
+ int want_salt = salt->len && !salted;
+ char *buf = NULL;
+ char *hashed_pw = NULL;
+ char *strvals[2];
+ LDAPMod mod, *mods[2];
+
+ if (!ld || !targetdn || !newpw)
+ return (1);
+
+ /* auto-generate password */
+ if (auto_gen_pw)
+ newpw = gen_pass (auto_gen_pw);
+
+ /* handle salt */
+ if (want_salt)
+ {
+ make_salt (salt, salt->len);
+ htype = hashes[htype].type_salted;
+ }
+ else if (hashes[htype].default_salt_len)
+ {
+ /* user chose a salted hash and needs a salt */
+ if (!salted)
+ {
+ want_salt++;
+ salt->len = hashes[htype].default_salt_len;
+ make_salt (salt, salt->len);
+ }
+ }
+
+ /* hash password */
+ hashed_pw = hashes[htype].func (newpw, salt->len ? salt : NULL);
+
+ /* return salt back to it's original state */
+ if (want_salt)
+ {
+ free (salt->salt);
+ salt->salt = NULL;
+ }
+
+ buf = (char *)malloc (hashes[htype].namesz + 3 + strlen (hashed_pw));
+ if (htype)
+ sprintf (buf, "{%s}%s", hashes[htype].name, hashed_pw);
+ else
+ sprintf (buf, "%s", hashed_pw);
+
+ if (verbose > 0)
+ {
+ printf ("%s", targetdn);
+ if (verbose > 1)
+ {
+ printf (":%s", buf);
+ if (verbose > 2)
+ printf (":%s", newpw);
+ }
+ printf ("\n");
+ }
+
+ strvals[0] = buf;
+ strvals[1] = NULL;
+ mod.mod_vals.modv_strvals = strvals;
+ mod.mod_type = pwattr;
+ mod.mod_op = LDAP_MOD_REPLACE;
+ mods[0] = &mod;
+ mods[1] =NULL;
+
+ if (!noupdates && (ret = ldap_modify_s (ld, targetdn, mods)) != LDAP_SUCCESS)
+ ldap_perror (ld, "ldap_modify_s");
+
+ free (hashed_pw);
+ free (buf);
+ return (ret);
+}
+
+void
+usage (char *s)
+{
+ fprintf (stderr, "Usage: %s [options] [filter]\n", s);
+ fprintf (stderr, " -a attrib\tpassword attribute (default: %s)\n", LDAP_PASSWD_ATTRIB);
+ fprintf (stderr, " -b basedn\tbasedn to perform searches\n");
+/* fprintf (stderr, " -C\t\tuse entry's current hash mechanism\n"); */
+ fprintf (stderr, " -D binddn\tbind dn\n");
+ fprintf (stderr, " -d level\tdebugging level\n");
+ fprintf (stderr, " -E\t\tprompt for new password\n");
+ fprintf (stderr, " -e passwd\tnew password\n");
+ fprintf (stderr, " -g passlen\tauto-generate passwords with length pwlen\n");
+ fprintf (stderr, " -H hash\thash type (default: crypt)\n");
+ fprintf (stderr, " -h host\tldap server (default: localhost)\n");
+#ifdef HAVE_KERBEROS
+ fprintf (stderr, " -K\t\tuse Kerberos step 1\n");
+ fprintf (stderr, " -k\t\tuse Kerberos\n");
+#endif
+ fprintf (stderr, " -l time\ttime limit\n");
+ fprintf (stderr, " -n\t\tmake no modifications\n");
+ fprintf (stderr, " -P version\tprotocol version (2 or 3)\n");
+ fprintf (stderr, " -p port\tldap port\n");
+ fprintf (stderr, " -s scope\tsearch scope: base, one, sub (default: sub)\n");
+ fprintf (stderr, " -t targetdn\tdn to change password\n");
+ fprintf (stderr, " -v\t\tverbose (more v's, more verbose)\n");
+ fprintf (stderr, " -W\t\tprompt for bind password\n");
+ fprintf (stderr, " -w passwd\tbind password (for simple authentication)\n");
+ fprintf (stderr, " -Y saltlen\tsalt length to use\n");
+/* fprintf (stderr, " -y salt\tsalt to use\n"); */
+ fprintf (stderr, " -z size\tsize limit\n");
+ exit (1);
+}
+
+int
+main (int argc, char *argv[])
+{
+ char *base = NULL;
+ char *binddn = NULL;
+ char *bindpw = NULL;
+ char *filtpattern = NULL;
+ char *ldaphost = NULL;
+ char *targetdn = NULL;
+ char *pwattr = LDAP_PASSWD_ATTRIB;
+ char *newpw = NULL;
+ int authmethod = LDAP_AUTH_SIMPLE;
+ int hashtype = HASHTYPE_CRYPT;
+ int i, j;
+ int ldapport = 0;
+ int debug = 0;
+ int scope = LDAP_SCOPE_SUBTREE;
+ int sizelimit = -1;
+ int timelimit = -1;
+ int version = -1;
+ int want_bindpw = 0;
+ int want_newpw = 0;
+ LDAP *ld;
+ Salt salt;
+
+ salt.salt = NULL;
+ salt.len = 0;
+
+ if (argc == 1)
+ usage (argv[0]);
+
+ while ((i = getopt (argc, argv, "a:b:C:D:d:Ee:g:H:h:Kkl:nP:p:s:t:vWw:Y:y:z:")) != EOF)
+ {
+ switch (i)
+ {
+ case 'a': /* password attribute */
+ pwattr = STRDUP (optarg);
+ break;
+
+ case 'b': /* base search dn */
+ base = STRDUP (optarg);
+ break;
+
+ case 'C':
+ want_entryhash++;
+ break;
+
+ case 'D': /* bind distinguished name */
+ binddn = STRDUP (optarg);
+ break;
+
+ case 'd': /* debugging option */
+ debug |= atoi (optarg);
+ break;
+
+ case 'E': /* prompt for new password */
+ want_newpw++;
+ break;
+
+ case 'e': /* new password */
+ newpw = STRDUP (optarg);
+ break;
+
+ case 'g':
+ auto_gen_pw = strtol (optarg, NULL, 10);
+ break;
+
+ case 'H': /* hashes */
+ for (j = 0; hashes[j].name; j++)
+ {
+ if (!strncasecmp (optarg, hashes[j].name, hashes[j].namesz))
+ {
+ hashtype = hashes[j].type;
+ break;
+ }
+ }
+
+ if (!hashes[j].name)
+ {
+ fprintf (stderr, "hash type: %s is unknown\n", optarg);
+ usage (argv[0]);
+ }
+ break;
+
+ case 'h': /* ldap host */
+ ldaphost = STRDUP (optarg);
+ break;
+
+ case 'K': /* use kerberos bind, 1st part only */
+#ifdef HAVE_KERBEROS
+ authmethod = LDAP_AUTH_KRBV41;
+#else
+ fprintf (stderr, "%s was not compiled with Kerberos support\n", argv[0]);
+#endif
+ break;
+
+ case 'k': /* use kerberos bind */
+#ifdef HAVE_KERBEROS
+ authmethod = LDAP_AUTH_KRBV4;
+#else
+ fprintf (stderr, "%s was not compiled with Kerberos support\n", argv[0]);
+#endif
+ break;
+
+ case 'l': /* time limit */
+ timelimit = strtol (optarg, NULL, 10);
+ break;
+
+ case 'n': /* don't update entry(s) */
+ noupdates++;
+ break;
+
+ case 'P':
+ switch(optarg[0])
+ {
+ case '2':
+ version = LDAP_VERSION2;
+ break;
+ case '3':
+ version = LDAP_VERSION3;
+ break;
+ }
+ break;
+
+ case 'p': /* ldap port */
+ ldapport = strtol (optarg, NULL, 10);
+ break;
+
+ case 's': /* scope */
+ if (strncasecmp (optarg, "base", 4) == 0)
+ scope = LDAP_SCOPE_BASE;
+ else if (strncasecmp (optarg, "one", 3) == 0)
+ scope = LDAP_SCOPE_ONELEVEL;
+ else if (strncasecmp (optarg, "sub", 3) == 0)
+ scope = LDAP_SCOPE_SUBTREE;
+ else
+ {
+ fprintf (stderr, "scope should be base, one, or sub\n");
+ usage (argv[0]);
+ }
+ break;
+
+ case 't': /* target dn */
+ targetdn = STRDUP (optarg);
+ break;
+
+ case 'v': /* verbose */
+ verbose++;
+ break;
+
+ case 'W': /* promt for bind password */
+ want_bindpw++;
+ break;
+
+ case 'w': /* bind password */
+ bindpw = STRDUP (optarg);
+ break;
+
+ case 'Y': /* salt length */
+ salt.len = strtol (optarg, NULL, 10);
+ break;
+
+ case 'y': /* user specified salt */
+ salt.len = strlen (optarg);
+ salt.salt = (unsigned char *)STRDUP (optarg);
+ break;
+
+ case 'z': /* time limit */
+ sizelimit = strtol (optarg, NULL, 10);
+ break;
+
+ default:
+ usage (argv[0]);
+ }
+ }
+
+ /* grab filter */
+ if (!(argc - optind < 1))
+ filtpattern = STRDUP (argv[optind]);
+
+ /* check for target(s) */
+ if (!filtpattern && !targetdn)
+ targetdn = binddn;
+
+ /* handle bind password */
+ if (want_bindpw)
+ bindpw = strdup (getpass ("Enter LDAP password: "));
+
+ /* handle new password */
+ if (!newpw)
+ {
+ char *cknewpw;
+ newpw = strdup (getpass ("New password: "));
+ cknewpw = getpass ("Re-enter new password: ");
+
+ if (strncmp (newpw, cknewpw, strlen (newpw)))
+ {
+ fprintf (stderr, "passwords do not match\n");
+ exit (1);
+ }
+ }
+
+ if ( debug ) {
+ lber_debug = ldap_debug = debug;
+ }
+
+ /* connect to server */
+ if ((ld = ldap_open (ldaphost, ldapport)) == NULL)
+ {
+ perror (ldaphost);
+ exit (1);
+ }
+
+ /* set options */
+ if( timelimit != -1 ) {
+ ld->ld_timelimit = timelimit;
+ }
+ if( sizelimit != -1 ) {
+ ld->ld_sizelimit = sizelimit;
+ }
+
+ /* this seems prudent */
+ ld->ld_deref = LDAP_DEREF_NEVER;
+
+ /* authenticate to server */
+ if (ldap_bind_s (ld, binddn, bindpw, authmethod) != LDAP_SUCCESS)
+ {
+ ldap_perror (ld, "ldap_bind");
+ exit (1);
+ }
+
+ if (targetdn)
+ {
+ if (want_entryhash)
+ {
+ /* insert code here =) */
+ }
+ else
+ modify_dn (ld, targetdn, pwattr, NULL, newpw, hashtype, &salt);
+ }
+
+ if (filtpattern)
+ {
+ char filter[BUFSIZ];
+ LDAPMessage *result = NULL, *e = NULL;
+ char *attrs[3] = {"dn", NULL, NULL};
+ attrs[1] = pwattr;
+
+ /* search */
+ sprintf (filter, "%s", filtpattern);
+ i = ldap_search_s (ld, base, scope, filter, attrs, 0, &result);
+ if (i != LDAP_SUCCESS &&
+ i != LDAP_TIMELIMIT_EXCEEDED &&
+ i != LDAP_SIZELIMIT_EXCEEDED)
+ {
+ ldap_perror (ld, "ldap_search_s");
+ exit (1);
+ }
+
+ for (e = ldap_first_entry (ld, result); e; e = ldap_next_entry (ld, e))
+ {
+ char *dn = ldap_get_dn (ld, e);
+ if (dn)
+ {
+ struct berval **pw_vals = ldap_get_values_len (ld, e, pwattr);
+ modify_dn (ld, dn, pwattr, pw_vals ? pw_vals[0]->bv_val : NULL, newpw, hashtype, &salt);
+ if (pw_vals)
+ ldap_value_free_len (pw_vals);
+ free (dn);
+ }
+ }
+ }
+
+ /* disconnect from server */
+ ldap_unbind (ld);
+ exit(0);
+
+ /* unreached */
+ return (0);
+}
projects / openldap / commitdiff