net ads password and net ads chostpass commands from Remus Koos

(This used to be commit 412e79c448bf02e3097b5c14a36fe0172d8d2895)

7 files changed, 244 insertions, 27 deletions

diff --git a/source3/Makefile.in b/source3/Makefile.in
index a713d61f36..3fa516b48c 100644
--- a/source3/Makefile.in
+++ b/source3/Makefile.in
@@ -133,7 +133,7 @@ UBIQX_OBJ = ubiqx/ubi_BinTree.o ubiqx/ubi_Cache.o ubiqx/ubi_SplayTree.o \
 PARAM_OBJ = param/loadparm.o param/params.o dynconfig.o
 
 LIBADS_OBJ = libads/ldap.o libads/sasl.o libads/krb5_setpw.o libads/kerberos.o \
-	     libads/ads_struct.o passdb/secrets.o 
+	     libads/ads_struct.o passdb/secrets.o libads/util.o
 
 LIBSMB_OBJ = libsmb/clientgen.o libsmb/cliconnect.o libsmb/clifile.o \
 	     libsmb/clikrb5.o libsmb/clispnego.o libsmb/asn1.o \
diff --git a/source3/libads/kerberos.c b/source3/libads/kerberos.c
index 8378442885..aba22e023b 100644
--- a/source3/libads/kerberos.c
+++ b/source3/libads/kerberos.c
@@ -3,6 +3,8 @@
    Version 3.0
    kerberos utility library
    Copyright (C) Andrew Tridgell 2001
+   Copyright (C) Remus Koos 2001
+   
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -27,8 +29,7 @@
   simulate a kinit, putting the tgt in the default cache location
   remus@snapserver.com
 */
-int kerberos_kinit_password(const char *principal, const char *password, 
-			    time_t real_time)
+int kerberos_kinit_password(const char *principal, const char *password)
 {
 	krb5_context ctx;
 	krb5_error_code code = 0;
@@ -44,10 +45,6 @@ int kerberos_kinit_password(const char *principal, const char *password,
 	if ((code = krb5_init_context(&ctx)))
 		return code;
 	
-	if (real_time) {
-		krb5_set_real_time(ctx, real_time, 0);
-	}
-
 	if ((code = krb5_cc_default(ctx, &cc))) {
 		krb5_free_context(ctx);
 		return code;
@@ -58,7 +55,7 @@ int kerberos_kinit_password(const char *principal, const char *password,
 		return code;
 	}
 	
-	if ((code = krb5_get_init_creds_password(ctx, &my_creds, me, password, NULL, 
+	if ((code = krb5_get_init_creds_password(ctx, &my_creds, me, (char*)password, NULL, 
 						NULL, 0, NULL, NULL))) {
 		krb5_free_principal(ctx, me);
 		krb5_free_context(ctx);		
@@ -105,7 +102,7 @@ int ads_kinit_password(ADS_STRUCT *ads)
 		asprintf(&ads->user_name, "HOST/%s", global_myname);
 	}
 	asprintf(&s, "%s@%s", ads->user_name, ads->realm);
-	ret = kerberos_kinit_password(s, ads->password, 0);
+	ret = kerberos_kinit_password(s, ads->password);
 
 	if (ret) {
 		DEBUG(0,("kerberos_kinit_password %s failed: %s\n", 
diff --git a/source3/libads/krb5_setpw.c b/source3/libads/krb5_setpw.c
index b46a579263..e15c22091d 100644
--- a/source3/libads/krb5_setpw.c
+++ b/source3/libads/krb5_setpw.c
@@ -3,6 +3,7 @@
    Version 3.0
    krb5 set password implementation
    Copyright (C) Andrew Tridgell 2001
+   Copyright (C) Remus Koos 2001 (remuskoos@yahoo.com)
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -32,12 +33,36 @@
 /* This implements the Kerb password change protocol as specifed in
  * kerb-chg-password-02.txt
  */
-static DATA_BLOB encode_krb5_setpw(const char *hostname, 
-				   const char *realm, const char *password)
+static DATA_BLOB encode_krb5_setpw(const char *principal, const char *password)
 {
+        char* princ_part1 = NULL;
+	char* princ_part2 = NULL;
+	char* realm = NULL;
+	char* c;
+	char* princ;
+
 	ASN1_DATA req;
 	DATA_BLOB ret;
 
+
+	princ = strdup(principal);
+
+	if ((c = strchr(princ, '/')) == NULL) {
+	    c = princ; 
+	} else {
+	    *c = '\0';
+	    c++;
+	    princ_part1 = princ;
+	}
+
+	princ_part2 = c;
+
+	if ((c = strchr(c, '@')) != NULL) {
+	    *c = '\0';
+	    c++;
+	    realm = c;
+	}
+
 	memset(&req, 0, sizeof(req));
 	
 	asn1_push_tag(&req, ASN1_SEQUENCE(0));
@@ -54,8 +79,11 @@ static DATA_BLOB encode_krb5_setpw(const char *hostname,
 
 	asn1_push_tag(&req, ASN1_CONTEXT(1));
 	asn1_push_tag(&req, ASN1_SEQUENCE(0));
-	asn1_write_GeneralString(&req, "HOST");
-	asn1_write_GeneralString(&req, hostname);
+
+	if (princ_part1) 
+	    asn1_write_GeneralString(&req, princ_part1);
+	
+	asn1_write_GeneralString(&req, princ_part2);
 	asn1_pop_tag(&req);
 	asn1_pop_tag(&req);
 	asn1_pop_tag(&req);
@@ -69,14 +97,15 @@ static DATA_BLOB encode_krb5_setpw(const char *hostname,
 	ret = data_blob(req.data, req.length);
 	asn1_free(&req);
 
+	free(princ);
+
 	return ret;
 }	
 
 static krb5_error_code build_setpw_request(krb5_context context,
 					   krb5_auth_context auth_context,
 					   krb5_data *ap_req,
-					   const char *hostname,
-					   const char *realm,
+					   const char *princ,
 					   const char *passwd,
 					   krb5_data *packet)
 {
@@ -95,13 +124,16 @@ static krb5_error_code build_setpw_request(krb5_context context,
 		return ret;
 	}
 
-	setpw = encode_krb5_setpw(hostname, realm, passwd);
+	setpw = encode_krb5_setpw(princ, passwd);
 
 	encoded_setpw.data = setpw.data;
 	encoded_setpw.length = setpw.length;
 
 	ret = krb5_mk_priv(context, auth_context,
 			   &encoded_setpw, &cipherpw, &replay);
+	
+	data_blob_free(&setpw); 	/*from 'encode_krb5_setpw(...)' */
+	
 	if (ret) {
 		DEBUG(1,("krb5_mk_priv failed (%s)\n", error_message(ret)));
 		return ret;
@@ -118,6 +150,8 @@ static krb5_error_code build_setpw_request(krb5_context context,
 	packet->length = PTR_DIFF(p,packet->data);
 	RSSVAL(packet->data, 0, packet->length);
 	
+	free(cipherpw.data);    /* from 'krb5_mk_priv(...)' */
+
 	return 0;
 }
 
@@ -196,6 +230,7 @@ static krb5_error_code parse_setpw_reply(krb5_context context,
 	}
 
 	if (clearresult.length < 2) {
+	        free(clearresult.data);
 		ret = KRB5KRB_AP_ERR_MODIFIED;
 		return KRB5KRB_AP_ERR_MODIFIED;
 	}
@@ -204,21 +239,23 @@ static krb5_error_code parse_setpw_reply(krb5_context context,
 	
 	res_code = RSVAL(p, 0);
 	
+	free(clearresult.data);
+
 	if ((res_code < KRB5_KPASSWD_SUCCESS) || 
-	    (res_code > KRB5_KPASSWD_ACCESSDENIED)) {
+	    (res_code >= KRB5_KPASSWD_ACCESSDENIED)) {
 		return KRB5KRB_AP_ERR_MODIFIED;
 	}
 	
 	return 0;
 }
 
-ADS_STATUS krb5_set_password(const char *kdc_host, const char *hostname,
-			     const char *realm,  const char *newpw)
+ADS_STATUS krb5_set_password(const char *kdc_host, const char *princ, const char *newpw)
 {
 	krb5_context context;
 	krb5_auth_context auth_context = NULL;
 	krb5_principal principal;
 	char *princ_name;
+	char *realm;
 	krb5_creds creds, *credsp;
 	krb5_ccache ccache;
 	krb5_data ap_req, chpw_req, chpw_rep;
@@ -234,33 +271,40 @@ ADS_STATUS krb5_set_password(const char *kdc_host, const char *hostname,
 	
 	ret = krb5_cc_default(context, &ccache);
 	if (ret) {
+	        krb5_free_context(context);
 		DEBUG(1,("Failed to get default creds (%s)\n", error_message(ret)));
 		return ADS_ERROR_KRB5(ret);
 	}
 
 	ZERO_STRUCT(creds);
 	
+	realm = strchr(princ, '@');
+	realm++;
+
 	asprintf(&princ_name, "kadmin/changepw@%s", realm);
 	ret = krb5_parse_name(context, princ_name, &creds.server);
 	if (ret) {
+                krb5_free_context(context);
 		DEBUG(1,("Failed to parse kadmin/changepw (%s)\n", error_message(ret)));
 		return ADS_ERROR_KRB5(ret);
 	}
 	free(princ_name);
 
-	asprintf(&princ_name, "HOST/%s@%s", hostname, realm);
-	ret = krb5_parse_name(context, princ_name, &principal);
+	/* parse the principal we got as a function argument */
+	ret = krb5_parse_name(context, princ, &principal);
 	if (ret) {
+                krb5_free_context(context);
 		DEBUG(1,("Failed to parse %s (%s)\n", princ_name, error_message(ret)));
 		return ADS_ERROR_KRB5(ret);
 	}
-	free(princ_name);
 
 	krb5_princ_set_realm(context, creds.server,
 			     krb5_princ_realm(context, principal));
 	
 	ret = krb5_cc_get_principal(context, ccache, &creds.client);
 	if (ret) {
+	        krb5_free_principal(context, principal);
+                krb5_free_context(context);
 		DEBUG(1,("Failed to get principal from ccache (%s)\n", 
 			 error_message(ret)));
 		return ADS_ERROR_KRB5(ret);
@@ -268,13 +312,21 @@ ADS_STATUS krb5_set_password(const char *kdc_host, const char *hostname,
 	
 	ret = krb5_get_credentials(context, 0, ccache, &creds, &credsp);
 	if (ret) {
+	        krb5_free_principal(context, creds.client);
+	        krb5_free_principal(context, principal);
+	        krb5_free_context(context);
 		DEBUG(1,("krb5_get_credentials failed (%s)\n", error_message(ret)));
 		return ADS_ERROR_KRB5(ret);
 	}
 	
+	//we might have to call krb5_free_creds(...) from now on ...
 	ret = krb5_mk_req_extended(context, &auth_context, AP_OPTS_USE_SUBKEY,
 				   NULL, credsp, &ap_req);
 	if (ret) {
+	        krb5_free_creds(context, credsp);
+	        krb5_free_principal(context, creds.client);
+	        krb5_free_principal(context, principal);
+	        krb5_free_context(context);
 		DEBUG(1,("krb5_mk_req_extended failed (%s)\n", error_message(ret)));
 		return ADS_ERROR_KRB5(ret);
 	}
@@ -282,6 +334,11 @@ ADS_STATUS krb5_set_password(const char *kdc_host, const char *hostname,
 	sock = open_udp_socket(kdc_host, DEFAULT_KPASSWD_PORT);
 	if (sock == -1) {
 		int rc = errno;
+	        free(ap_req.data);
+	        krb5_free_creds(context, credsp);
+		krb5_free_principal(context, creds.client);
+		krb5_free_principal(context, principal);
+		krb5_free_context(context);
 		DEBUG(1,("failed to open kpasswd socket to %s (%s)\n", 
 			 kdc_host, strerror(errno)));
 		return ADS_ERROR_SYSTEM(rc);
@@ -301,18 +358,37 @@ ADS_STATUS krb5_set_password(const char *kdc_host, const char *hostname,
 
 	ret = krb5_auth_con_setaddrs(context, auth_context, &local_kaddr, NULL);
 	if (ret) {
+	        close(sock);
+	        free(ap_req.data);
+	        krb5_free_creds(context, credsp);
+	        krb5_free_principal(context, creds.client);
+	        krb5_free_principal(context, principal);
+	        krb5_free_context(context);
 		DEBUG(1,("krb5_auth_con_setaddrs failed (%s)\n", error_message(ret)));
 		return ADS_ERROR_KRB5(ret);
 	}
 
 	ret = build_setpw_request(context, auth_context, &ap_req,
-				  hostname, realm, newpw, &chpw_req);
+				  princ, newpw, &chpw_req);
 	if (ret) {
+	        close(sock);
+	        free(ap_req.data);
+	        krb5_free_creds(context, credsp);
+	        krb5_free_principal(context, creds.client);
+	        krb5_free_principal(context, principal);
+	        krb5_free_context(context);
 		DEBUG(1,("build_setpw_request failed (%s)\n", error_message(ret)));
 		return ADS_ERROR_KRB5(ret);
 	}
 
 	if (write(sock, chpw_req.data, chpw_req.length) != chpw_req.length) {
+	        close(sock);
+		free(chpw_req.data);
+	        free(ap_req.data);
+	        krb5_free_creds(context, credsp);
+		krb5_free_principal(context, creds.client);
+		krb5_free_principal(context, principal);
+		krb5_free_context(context);
 		DEBUG(1,("send of chpw failed (%s)\n", strerror(errno)));
 		return ADS_ERROR(LDAP_ENCODING_ERROR);
 	}
@@ -324,6 +400,14 @@ ADS_STATUS krb5_set_password(const char *kdc_host, const char *hostname,
 
 	ret = read(sock, chpw_rep.data, chpw_rep.length);
 	if (ret < 0) {
+	        close(sock);
+		free(chpw_rep.data);
+		free(ap_req.data);
+	        krb5_free_creds(context, credsp);
+		krb5_free_principal(context, creds.client);
+		krb5_free_principal(context, principal);
+		krb5_free_context(context);
+		DEBUG(1,("recv of chpw reply failed (%s)\n", strerror(errno)));
 		return ADS_ERROR_SYSTEM(errno);
 	}
 
@@ -332,6 +416,12 @@ ADS_STATUS krb5_set_password(const char *kdc_host, const char *hostname,
 
 	ret = krb5_auth_con_setaddrs(context, auth_context, NULL,&remote_kaddr);
 	if (ret) {
+	        free(chpw_rep.data);
+	        free(ap_req.data);
+	        krb5_free_creds(context, credsp);
+		krb5_free_principal(context, creds.client);
+		krb5_free_principal(context, principal);
+		krb5_free_context(context);
 		DEBUG(1,("krb5_auth_con_setaddrs on reply failed (%s)\n", 
 			 error_message(ret)));
 		return ADS_ERROR_KRB5(ret);
@@ -341,12 +431,39 @@ ADS_STATUS krb5_set_password(const char *kdc_host, const char *hostname,
 	free(chpw_rep.data);
 
 	if (ret) {
+	        free(ap_req.data);
+	        krb5_free_creds(context, credsp);
+		krb5_free_principal(context, creds.client);
+		krb5_free_principal(context, principal);
+		krb5_free_context(context);
 		DEBUG(1,("parse_setpw_reply failed (%s)\n", 
 			 error_message(ret)));
 		return ADS_ERROR_KRB5(ret);
 	}
 
+	free(ap_req.data);
+	krb5_free_creds(context, credsp);
+	krb5_free_principal(context, creds.client);
+	krb5_free_principal(context, principal);
+	krb5_free_context(context);
+
 	return ADS_SUCCESS;
 }
 
+
+ADS_STATUS kerberos_set_password(const char *kpasswd_server, 
+				 const char *auth_principal, const char *auth_password,
+				 const char *target_principal, const char *new_password)
+{
+    int ret;
+
+    if ((ret = kerberos_kinit_password(auth_principal, auth_password))) {
+	DEBUG(1,("Failed kinit for principal %s (%s)\n", auth_principal, error_message(ret)));
+	return ADS_ERROR_KRB5(ret);
+    }
+
+    return krb5_set_password(kpasswd_server, target_principal, new_password);
+}
+
+
 #endif
diff --git a/source3/libads/ldap.c b/source3/libads/ldap.c
index 3452614315..d2b9f74c4d 100644
--- a/source3/libads/ldap.c
+++ b/source3/libads/ldap.c
@@ -3,6 +3,8 @@
    Version 3.0
    ads (active directory) utility library
    Copyright (C) Andrew Tridgell 2001
+   Copyright (C) Remus Koos 2001
+   
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -442,9 +444,17 @@ ADS_STATUS ads_set_machine_password(ADS_STRUCT *ads,
 {
 	ADS_STATUS status;
 	char *host = strdup(hostname);
+	char *principal; 
+
 	strlower(host);
-	status = krb5_set_password(ads->kdc_server, host, ads->realm, password);
+
+	asprintf(&principal, "%s@%s", host, ads->realm);
+	
+	status = krb5_set_password(ads->kdc_server, principal, password);
+	
 	free(host);
+	free(principal);
+
 	return status;
 }
 
diff --git a/source3/nsswitch/.cvsignore b/source3/nsswitch/.cvsignore
index 5f2a5c4cf7..090b859b37 100644
--- a/source3/nsswitch/.cvsignore
+++ b/source3/nsswitch/.cvsignore
@@ -1,2 +1,3 @@
 *.po
 *.po32
+diffs
diff --git a/source3/tdb/.cvsignore b/source3/tdb/.cvsignore
index b0e66acabc..0bc8c1aedf 100644
--- a/source3/tdb/.cvsignore
+++ b/source3/tdb/.cvsignore
@@ -1,8 +1,9 @@
-tdbtool
+*.po
+*.po32
+tdbdump
 tdbtest
+tdbtool
 tdbtorture
 test.db
 test.gdbm
 test.tdb
-*.po
-*.po32
diff --git a/source3/utils/net_ads.c b/source3/utils/net_ads.c
index 3bfc9d935c..0853cd3bbf 100644
--- a/source3/utils/net_ads.c
+++ b/source3/utils/net_ads.c
@@ -3,6 +3,7 @@
    Version 3.0
    net ads commands
    Copyright (C) 2001 Andrew Tridgell (tridge@samba.org)
+   Copyright (C) 2001 Remus Koos (remuskoos@yahoo.com)
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -38,6 +39,11 @@ int net_ads_usage(int argc, const char **argv)
 "\n\tshows some info on the server\n"\
 "\nnet ads status"\
 "\n\tdump the machine account details to stdout\n"
+"\nnet ads password <username@realm> -Uadmin_username@realm%%admin_pass"\
+"\n\tchange a user's password using an admin account"
+"\n\t(note: use realm in UPPERCASE)\n"
+"\nnet ads chostpass"
+"\n\tchange the trust account password of this machine in the AD tree\n"
 		);
 	return -1;
 }
@@ -257,6 +263,89 @@ static int net_ads_join(int argc, const char **argv)
 	return 0;
 }
 
+
+static int net_ads_password(int argc, const char **argv)
+{
+    ADS_STRUCT *ads;
+    extern char *opt_user_name;
+    extern char *opt_password;
+    char *auth_principal = opt_user_name;
+    char *auth_password = opt_password;
+    char *realm = NULL;
+    char *new_password = NULL;
+    char *c;
+    char *prompt;
+    ADS_STATUS ret;
+
+    
+    if ((argc != 1) || (opt_user_name == NULL) || 
+	(opt_password == NULL) || (strchr(opt_user_name, '@') == NULL) ||
+	(strchr(argv[0], '@') == NULL)) {
+	return net_ads_usage(argc, argv);
+    }
+    
+    c = strchr(auth_principal, '@');
+    realm = ++c;
+
+    /* use the realm so we can eventually change passwords for users 
+    in realms other than default */
+    if (!(ads = ads_init(realm, NULL, NULL, NULL))) return -1;
+
+    asprintf(&prompt, "Enter new password for %s:", argv[0]);
+
+    new_password = getpass(prompt);
+
+    ret = kerberos_set_password(ads->kdc_server, auth_principal, 
+				auth_password, argv[0], new_password);
+    if (!ADS_ERR_OK(ret)) {
+	d_printf("Password change failed :-( ...\n");
+	ads_destroy(&ads);
+	free(prompt);
+	return -1;
+    }
+
+    d_printf("Password change for %s completed.\n", argv[0]);
+    ads_destroy(&ads);
+    free(prompt);
+
+    return 0;
+}
+
+
+static int net_ads_change_localhost_pass(int argc, const char **argv)
+{    
+    ADS_STRUCT *ads;
+    extern pstring global_myname;
+    char *host_principal;
+    char *hostname;
+    ADS_STATUS ret;
+
+
+    if (!(ads = ads_init(NULL, NULL, NULL, NULL))) return -1;
+
+    hostname = strdup(global_myname);
+    strlower(hostname);
+    asprintf(&host_principal, "%s@%s", hostname, ads->realm);
+    SAFE_FREE(hostname);
+    d_printf("Changing password for principal: HOST/%s\n", host_principal);
+    
+    ret = ads_change_trust_account_password(ads, host_principal);
+
+    if (!ADS_ERR_OK(ret)) {
+	d_printf("Password change failed :-( ...\n");
+	ads_destroy(&ads);
+	SAFE_FREE(host_principal);
+	return -1;
+    }
+    
+    d_printf("Password change for principal HOST/%s succeeded.\n", host_principal);
+    ads_destroy(&ads);
+    SAFE_FREE(host_principal);
+
+    return 0;
+}
+
+
 int net_ads(int argc, const char **argv)
 {
 	struct functable func[] = {
@@ -266,6 +355,8 @@ int net_ads(int argc, const char **argv)
 		{"STATUS", net_ads_status},
 		{"USER", net_ads_user},
 		{"GROUP", net_ads_group},
+		{"PASSWORD", net_ads_password},
+		{"CHOSTPASS", net_ads_change_localhost_pass},
 		{NULL, NULL}
 	};