--- /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
+ *
+ * Created: 1998-11-26
+ * Author: David E. Storey <dave@tamos.net>
+ * Last Modified: 1998-12-05
+ *
+ * ToDo: passwd style change of password (termcap?)
+ * option for referral handling
+ * cracklib support?
+ * kerberos support? (is this really necessary?)
+ * update "shadow" fields?
+ * create/view/change password policies?
+ *
+ * Note: I am totally FOR comments and suggestions!
+ */
+
+#include "portable.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"
+
+#define LDAP_PASSWD_ATTRIB "userPassword"
+
+typedef enum {
+ HASHTYPE_NONE,
+ HASHTYPE_CRYPT,
+ HASHTYPE_MD5,
+ HASHTYPE_SHA1
+} HashTypes;
+
+struct hash_t {
+ char *name;
+ int namesz;
+ int (*func)(const char *, char *);
+ HashTypes type;
+};
+
+const char crypt64[] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789./";
+char *base = NULL;
+char *binddn = NULL;
+char *bindpw = NULL;
+char *ldaphost = "localhost";
+char *pwattr = LDAP_PASSWD_ATTRIB;
+char *targetdn = NULL;
+char *filtpattern = NULL;
+int ldapport = LDAP_PORT;
+int noupdates = 0;
+int verbose = 0;
+int hashtype = HASHTYPE_CRYPT;
+int scope = LDAP_SCOPE_SUBTREE;
+
+/*** functions ***/
+
+/*
+ * if you'd like to write a better salt generator, please, be my guest.
+ * I just needed *something*. It's actually halfway effective for small,
+ * two character salts and it can come up with sequentially different
+ * salts.
+ */
+
+void
+crypt_make_salt(char *salt)
+{
+ struct timeval tv;
+ int i;
+ char t_salt[5];
+
+ /* grab current time */
+ gettimeofday(&tv, (struct timezone *) 0);
+ i += tv.tv_usec + (int)&salt;
+ strncpy(t_salt, (char *)&i, sizeof(i));
+
+ for (i = 0; i < sizeof(i); i++)
+ salt[i] = crypt64[t_salt[i] % (sizeof(crypt64) - 1)];
+ salt[i] = '\0';
+}
+
+int
+hash_none(const char *pw_in, char *pw_out)
+{
+ strcpy(pw_out, pw_in);
+ return(1);
+}
+
+int
+hash_crypt(const char *pw_in, char *pw_out)
+{
+ char salt[5];
+ crypt_make_salt(salt);
+ strcpy(pw_out, crypt(pw_in, salt));
+ return(1);
+}
+
+int
+hash_md5(const char *pw_in, char *pw_out)
+{
+ lutil_MD5_CTX MD5context;
+ unsigned char MD5digest[16];
+ char base64digest[25]; /* ceiling(sizeof(input)/3) * 4 + 1 */
+
+ lutil_MD5Init(&MD5context);
+ lutil_MD5Update(&MD5context, (unsigned char *)pw_in, strlen(pw_in));
+ lutil_MD5Final(MD5digest, &MD5context);
+ if (lutil_b64_ntop(MD5digest, sizeof(MD5digest), base64digest, sizeof(base64digest)) < 0)
+ return (0);
+
+ strcpy(pw_out, base64digest);
+ return(1);
+}
+
+int
+hash_sha1(const char *pw_in, char *pw_out)
+{
+ lutil_SHA1_CTX SHA1context;
+ unsigned char SHA1digest[20];
+ char base64digest[29]; /* ceiling(sizeof(input)/3) * 4 + 1 */
+
+ lutil_SHA1Init(&SHA1context);
+ lutil_SHA1Update(&SHA1context, (unsigned char *)pw_in, strlen(pw_in));
+ lutil_SHA1Final(SHA1digest, &SHA1context);
+ if (lutil_b64_ntop(SHA1digest, sizeof(SHA1digest), base64digest, sizeof(base64digest)) < 0)
+ return(0);
+
+ strcpy(pw_out, base64digest);
+ return(1);
+}
+
+static struct hash_t hashes[] = {
+ {"none", 4, hash_none, HASHTYPE_NONE},
+ {"crypt", 5, hash_crypt, HASHTYPE_CRYPT},
+ {"md5", 3, hash_md5, HASHTYPE_MD5},
+ {"sha", 3, hash_sha1, HASHTYPE_SHA1},
+ {NULL, 0, NULL, HASHTYPE_NONE}
+};
+
+int
+modify_dn(LDAP *ld, char *targetdn, char *newpw)
+{
+ int ret = 0;
+ char hashed_pw[128] = {'\0'};
+ char buf[128] = {'\0'};
+ char *strvals[2] = {buf, NULL};
+ LDAPMod mod, *mods[2] = {&mod, NULL};
+
+ if (!ld || !targetdn || !newpw)
+ return(1);
+
+ /* hash password */
+ hashes[hashtype].func(newpw, hashed_pw);
+ if (hashtype)
+ sprintf(buf, "{%s}%s", hashes[hashtype].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");
+ }
+
+ mod.mod_vals.modv_strvals = strvals;
+ mod.mod_type = pwattr;
+ mod.mod_op = LDAP_MOD_REPLACE;
+
+ if (!noupdates && (ret = ldap_modify_s(ld, targetdn, mods)) != LDAP_SUCCESS)
+ ldap_perror(ld, "ldap_modify_s");
+ return(ret);
+}
+
+void
+usage(char *s)
+{
+ fprintf(stderr, "usage: %s [options] [filter]\n", s);
+ fprintf(stderr, " -a attrib password attribute (default: userPassword)\n");
+ fprintf(stderr, " -b basedn basedn to perform searches\n");
+ fprintf(stderr, " -c hash hash type: none, crypt, md5, sha (default: crypt)\n");
+ fprintf(stderr, " -D binddn bind dn\n");
+ fprintf(stderr, " -d level debugging level\n");
+ fprintf(stderr, " -h host ldap server (default: localhost)\n");
+ fprintf(stderr, " -l time time limit\n");
+ fprintf(stderr, " -n make no modifications\n");
+ fprintf(stderr, " -p port ldap port\n");
+ fprintf(stderr, " -s scope search scope: base, one, sub (default: sub)\n");
+ fprintf(stderr, " -t targetdn dn to change password\n");
+ fprintf(stderr, " -W newpass new password\n");
+ fprintf(stderr, " -w passwd bind password (for simple authentication)\n");
+ fprintf(stderr, " -v verbose\n");
+ fprintf(stderr, " -z size size limit\n");
+ exit(1);
+}
+
+int
+main(int argc, char *argv[])
+{
+ char *newpw = NULL;
+ int i, j;
+ int sizelimit = LDAP_NO_LIMIT;
+ int timelimit = LDAP_NO_LIMIT;
+ LDAP *ld;
+
+ while ((i = getopt(argc, argv, "D:W:a:b:c:d:h:l:np:s:t:vw:z:")) != EOF)
+ {
+ switch(i)
+ {
+ case 'D': /* bind distinguished name */
+ binddn = strdup(optarg);
+ break;
+
+ case 'W': /* new password */
+ if (optarg)
+ newpw = strdup(optarg);
+ break;
+
+ case 'a': /* password attribute */
+ if (optarg)
+ pwattr = strdup(optarg);
+ break;
+
+ case 'b': /* base search dn */
+ if (optarg)
+ base = strdup(optarg);
+ break;
+
+ case 'c': /* 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 'd': /* debugging option */
+#ifdef LDAP_DEBUG
+ ldap_debug = lber_debug = atoi(optarg); /* */
+#else
+ fprintf(stderr, "compile with -DLDAP_DEBUG for debugging\n");
+#endif
+ break;
+
+ case 'h': /* ldap host */
+ if (optarg)
+ ldaphost = strdup(optarg);
+ break;
+
+ case 'l': /* time limit */
+ if (optarg)
+ timelimit = strtol(optarg, NULL, 10);
+ break;
+
+ case 'n': /* don't update entry(s) */
+ noupdates++;
+ break;
+
+ case 'p': /* ldap port */
+ if (optarg)
+ 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': /* password type */
+ if (optarg)
+ targetdn = strdup(optarg);
+ else
+ targetdn = binddn;
+ break;
+
+ case 'v': /* verbose */
+ verbose++;
+ break;
+
+ case 'w': /* bind password */
+ bindpw = strdup(optarg);
+ break;
+
+ case 'z': /* time limit */
+ if (optarg)
+ sizelimit = strtol(optarg, NULL, 10);
+ break;
+
+ default:
+ usage(argv[0]);
+ }
+ }
+
+ if (!(argc - optind < 1))
+ filtpattern = strdup(argv[optind]);
+
+ if (!filtpattern && !targetdn)
+ {
+ fprintf(stderr, "No filter or targetdn(-t)\n");
+ usage(argv[0]);
+ }
+
+ if (!newpw)
+ {
+ fprintf(stderr, "Need a password (-W)\n");
+ usage(argv[0]);
+ }
+
+ /* connect to server */
+ if ((ld = ldap_open(ldaphost, ldapport)) == NULL)
+ {
+ perror(ldaphost);
+ return(1);
+ }
+
+ /* set options */
+ ldap_set_option(ld, LDAP_OPT_TIMELIMIT, (void *)&timelimit);
+ ldap_set_option(ld, LDAP_OPT_SIZELIMIT, (void *)&sizelimit);
+
+ /* authenticate to server */
+ if (ldap_bind_s(ld, binddn, bindpw, LDAP_AUTH_SIMPLE) != LDAP_SUCCESS)
+ {
+ ldap_perror(ld, "ldap_bind");
+ return(1);
+ }
+
+ if (filtpattern)
+ {
+ char filter[BUFSIZ];
+ LDAPMessage *result = NULL, *e = NULL;
+ char *attrs[] = {"dn", NULL};
+
+ /* search */
+ sprintf(filter, "%s", filtpattern);
+ i = ldap_search_s(ld, base, scope, filter, attrs, 1, &result);
+ if (i != LDAP_SUCCESS && i != LDAP_TIMELIMIT_EXCEEDED && i != LDAP_SIZELIMIT_EXCEEDED)
+ {
+ ldap_perror(ld, "ldap_search_s");
+ return(1);
+ }
+
+ for (e = ldap_first_entry(ld, result); e; e = ldap_next_entry(ld, e))
+ {
+ char *dn = ldap_get_dn(ld, e);
+ if (dn)
+ {
+ modify_dn(ld, dn, newpw);
+ free(dn);
+ }
+ }
+ }
+
+ if (targetdn)
+ modify_dn(ld, targetdn, newpw);
+
+ /* disconnect from server */
+ ldap_unbind(ld);
+ return(0);
+}
--- /dev/null
+.TH LDAPPASSWD 1 "5 December 1998" "LDAPPasswd"
+.SH NAME
+ldappasswd \- change the password of an LDAP entry
+.SH SYNOPSIS
+.B ldappasswd
+[\c
+.BI \-a \ passwdattribute\fR]
+[\c
+.BI \-b \ searchbase\fR]
+[\c
+.BI \-c \ none\fR\||\|\fIcrypt\fR\||\|\fImd5\fR\||\|\fIsha\fR]
+[\c
+.BI \-D \ binddn\fR]
+[\c
+.BI \-d \ debuglevel\fR]
+[\c
+.BI \-h \ ldaphost\fR]
+[\c
+.BI \-l \ searchtime\fR]
+[\c
+.B \-n\fR]
+[\c
+.BI \-p \ ldapport\fR]
+[\c
+.BI \-s \ base\fR\||\|\fIone\fR\||\|\fIsub\fR]
+[\c
+.BR \-t \ [\fItargetdn\fR]\ ]
+[\c
+.B \-v\fR]
+[\c
+.BI \-W \ newpasswd\fR]
+[\c
+.BI \-w \ passwd\fR]
+[\c
+.BI \-z \ searchsize\fR]
+[\fIfilter\fR]
+.SH DESCRIPTION
+.B ldappasswd
+is a tool to modify the password of one or more LDAP entries.
+Multiple entries can be specified using a search filter.
+It is neither designed nor intended to be a replacement for
+.BR passwd (1)
+and should not be installed as such.
+.LP
+.B ldappasswd
+works by specifying a single target dn or by using a search filter.
+Matching entries will be modified with the new password.
+The new password will be hashed using
+.I crypt
+or any other supported hashing algorithm.
+For hashing algorithms other than
+.I crypt
+or
+.IR none ,
+the stored password will be base64 encoded.
+Salts are only generated for crypt and are based on the least
+significant bits of the current time and other psuedo randomness.
+.SH OPTIONS
+.TP
+.BI \-a \ passwdattribute
+Specify the LDAP attribute to change. The default is "userPassword".
+.TP
+.BI \-b \ searchbase
+Use \fIsearchbase\fP as the starting point for the search instead of
+the default.
+.TP
+.B \-c \fInone\fR\||\|\fIcrypt\fR\||\|\fImd5\fR\||\|\fIsha\fR
+Specify the hashing algorithm used to store the password. The default is
+.IR crypt .
+.TP
+.BI \-D \ binddn
+Use \fIbinddn\fP to bind to the X.500 directory. \fIbinddn\fP should be
+a string-represented DN as defined in RFC 1779.
+.TP
+.BI \-d \ debuglevel
+Set the LDAP debugging level to \fIdebuglevel\fP.
+.B ldappasswd
+must be compiled with LDAP_DEBUG defined for this option to have any effect.
+.TP
+.BI \-h \ ldaphost
+Specify an alternate host on which the ldap server is running.
+.TP
+.BI \-l \ searchtime
+Specify a maximum query time in seconds.
+.TP
+.B \-n
+Make no modifications. (Can be useful when used in conjunction with
+.BR \-v \ or
+.BR \-d )
+.TP
+.BI \-p \ ldapport
+Specify an alternate port on which the ldap server is running.
+.TP
+.BI \-s \ base\fR\||\|\fIone\fR\||\|\fIsub\fR
+Specify the scope of the search. The default is
+.IR base .
+.TP
+.B \-t \fR[\fItargetdn\fR]
+Specify the target dn to modify. If an argument is not given, the target dn will be the binddn.
+.TP
+.B \-v
+The more v's the more verbose.
+.TP
+.BI \-W \ newpasswd
+Specify the new password.
+.TP
+.BI \-w \ passwd
+Use \fIpasswd\fP as the password for simple authentication.
+.TP
+.BI \-z \ searchsize
+Specify a maximum query size.
+.SH AUTHOR
+David E. Storey <dave@tamos.net>
+.SH "SEE ALSO"
+.BR ldapadd (1),
+.BR ldapdelete (1),
+.BR ldapmodrdn (1),
+.BR ldapsearch (1)
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