From ab1cf8d1cf447e85063b43b65fa05c8b4bfde2a9 Mon Sep 17 00:00:00 2001
From: Tim Potter <tpot@samba.org>
Date: Wed, 6 Nov 2002 05:14:15 +0000
Subject: Merge of get_dc_list() api change from HEAD. (This used to be commit
 6ba7847ce2756fde94e530fd0bf2a055f3e27373)

---
 source3/auth/auth_domain.c     | 19 +++++++++--
 source3/libads/ldap.c          | 19 +++++------
 source3/libsmb/namequery.c     | 59 +++++++++++++++++++++++++++--------
 source3/nsswitch/winbindd_cm.c | 71 ++++++++++--------------------------------
 source3/rpcclient/samsync.c    |  9 +++---
 source3/smbd/change_trust_pw.c | 14 +++------
 source3/utils/net.c            | 25 ++++-----------
 source3/utils/net_lookup.c     | 16 +++++-----
 8 files changed, 109 insertions(+), 123 deletions(-)

(limited to 'source3')

diff --git a/source3/auth/auth_domain.c b/source3/auth/auth_domain.c
index 129c486562..e18d809efb 100644
--- a/source3/auth/auth_domain.c
+++ b/source3/auth/auth_domain.c
@@ -288,8 +288,23 @@ static NTSTATUS find_connect_pdc(struct cli_state **cli,
 	if (time_now - last_change_time < 3600)
 		use_pdc_only = True;
 
-	if (!get_dc_list(use_pdc_only, domain, &ip_list, &count))
-		return NT_STATUS_NO_LOGON_SERVERS;
+	if (use_pdc_only) {
+		struct in_addr pdc_ip;
+
+		if (!get_pdc_ip(domain, &pdc_ip))
+			return NT_STATUS_NO_LOGON_SERVERS;
+
+		if ((ip_list = (struct in_addr *)
+		     malloc(sizeof(struct in_addr))) == NULL) 
+			return NT_STATUS_NO_MEMORY;
+
+		ip_list[0] = pdc_ip;
+		count = 1;
+
+	} else {
+		if (!get_dc_list(domain, &ip_list, &count))
+			return NT_STATUS_NO_LOGON_SERVERS;
+	}
 
 	/*
 	 * Firstly try and contact a PDC/BDC who has the same
diff --git a/source3/libads/ldap.c b/source3/libads/ldap.c
index 2359dbd7ed..a59b78bf13 100644
--- a/source3/libads/ldap.c
+++ b/source3/libads/ldap.c
@@ -180,7 +180,7 @@ static BOOL ads_try_dns(ADS_STRUCT *ads)
 /* try connecting to a ldap server via netbios */
 static BOOL ads_try_netbios(ADS_STRUCT *ads)
 {
-	struct in_addr *ip_list;
+	struct in_addr *ip_list, pdc_ip;
 	int count;
 	int i;
 	char *workgroup = ads->server.workgroup;
@@ -192,20 +192,15 @@ static BOOL ads_try_netbios(ADS_STRUCT *ads)
 	DEBUG(6,("ads_try_netbios: looking for workgroup '%s'\n", workgroup));
 
 	/* try the PDC first */
-	if (get_dc_list(True, workgroup, &ip_list, &count)) { 
-		for (i=0;i<count;i++) {
-			DEBUG(6,("ads_try_netbios: trying server '%s'\n", 
-				 inet_ntoa(ip_list[i])));
-			if (ads_try_connect(ads, inet_ntoa(ip_list[i]), LDAP_PORT)) {
-				free(ip_list);
-				return True;
-			}
-		}
-		free(ip_list);
+	if (get_pdc_ip(workgroup, &pdc_ip)) { 
+		DEBUG(6,("ads_try_netbios: trying server '%s'\n", 
+			 inet_ntoa(pdc_ip)));
+		if (ads_try_connect(ads, inet_ntoa(pdc_ip), LDAP_PORT))
+			return True;
 	}
 
 	/* now any DC, including backups */
-	if (get_dc_list(False, workgroup, &ip_list, &count)) { 
+	if (get_dc_list(workgroup, &ip_list, &count)) { 
 		for (i=0;i<count;i++) {
 			DEBUG(6,("ads_try_netbios: trying server '%s'\n", 
 				 inet_ntoa(ip_list[i])));
diff --git a/source3/libsmb/namequery.c b/source3/libsmb/namequery.c
index 40a353fa8b..8fdf145625 100644
--- a/source3/libsmb/namequery.c
+++ b/source3/libsmb/namequery.c
@@ -1206,54 +1206,87 @@ NT GETDC call, UNICODE, NT domain SID and uncle tom cobbley and all...
 #endif /* defined(I_HATE_WINDOWS_REPLY_CODE) */
 }
 
-
 /********************************************************
- Get the IP address list of the PDC/BDC's of a Domain.
+ Get the IP address list of the primary domain controller
+ for a domain.
 *********************************************************/
 
-BOOL get_dc_list(BOOL pdc_only, const char *group, struct in_addr **ip_list, int *count)
+BOOL get_pdc_ip(const char *domain, struct in_addr *ip)
 {
-	int name_type = pdc_only ? 0x1B : 0x1C;
+	struct in_addr *ip_list;
+	int count;
+
+	/* Look up #1B name */
+
+	if (!internal_resolve_name(domain, 0x1b, &ip_list, &count))
+		return False;
+
+	SMB_ASSERT(count == 1);
+
+	*ip = ip_list[0];
+	SAFE_FREE(ip_list);
+
+	return True;
+}
 
+/********************************************************
+ Get the IP address list of the domain controllers for
+ a domain.
+*********************************************************/
+
+BOOL get_dc_list(const char *domain, struct in_addr **ip_list, int *count)
+{
 	/*
 	 * If it's our domain then
 	 * use the 'password server' parameter.
 	 */
 
-	if (strequal(group, lp_workgroup())) {
+	if (strequal(domain, lp_workgroup())) {
 		char *p;
 		char *pserver = lp_passwordserver();
 		fstring name;
 		int num_adresses = 0;
 		struct in_addr *return_iplist = NULL;
 
-		if (! *pserver)
-			return internal_resolve_name(group, name_type, ip_list, count);
+		if (!*pserver)
+			return internal_resolve_name(
+				domain, 0x1C, ip_list, count);
 
 		p = pserver;
+
 		while (next_token(&p,name,LIST_SEP,sizeof(name))) {
 			if (strequal(name, "*"))
-				return internal_resolve_name(group, name_type, ip_list, count);
+				return internal_resolve_name(
+					domain, 0x1C, ip_list, count);
 			num_adresses++;
 		}
+
 		if (num_adresses == 0)
-			return internal_resolve_name(group, name_type, ip_list, count);
+			return internal_resolve_name(
+				domain, 0x1C, ip_list, count);
+
+		return_iplist = (struct in_addr *)malloc(
+			num_adresses * sizeof(struct in_addr));
 
-		return_iplist = (struct in_addr *)malloc(num_adresses * sizeof(struct in_addr));
-		if(return_iplist == NULL) {
+		if (return_iplist == NULL) {
 			DEBUG(3,("get_dc_list: malloc fail !\n"));
 			return False;
 		}
+
 		p = pserver;
 		*count = 0;
+
 		while (next_token(&p,name,LIST_SEP,sizeof(name))) {
 			struct in_addr name_ip;
 			if (resolve_name( name, &name_ip, 0x20) == False)
 				continue;
 			return_iplist[(*count)++] = name_ip;
 		}
+
 		*ip_list = return_iplist;
+
 		return (*count != 0);
-	} else
-		return internal_resolve_name(group, name_type, ip_list, count);
+	}
+	
+	return internal_resolve_name(domain, 0x1C, ip_list, count);
 }
diff --git a/source3/nsswitch/winbindd_cm.c b/source3/nsswitch/winbindd_cm.c
index bbf5b90495..b4d5a664b2 100644
--- a/source3/nsswitch/winbindd_cm.c
+++ b/source3/nsswitch/winbindd_cm.c
@@ -140,70 +140,32 @@ static BOOL cm_ads_find_dc(const char *domain, struct in_addr *dc_ip, fstring sr
 */
 static BOOL cm_rpc_find_dc(const char *domain, struct in_addr *dc_ip, fstring srv_name)
 {
-	struct in_addr *ip_list = NULL, exclude_ip;
+	struct in_addr *ip_list = NULL;
 	int count, i;
 
-	zero_ip(&exclude_ip);
-
-	/* Lookup domain controller name. Try the real PDC first to avoid
-	   SAM sync delays */
-
-	if (get_dc_list(True, domain, &ip_list, &count)) {
-		if (name_status_find(domain, 0x1c, 0x20, ip_list[0], srv_name)) {
-			*dc_ip = ip_list[0];
-			SAFE_FREE(ip_list);
-			return True;
+	if (!get_dc_list(domain, &ip_list, &count)) {
+		struct in_addr pdc_ip;
+		
+		if (!get_pdc_ip(domain, &pdc_ip)) {
+			DEBUG(3, ("Could not look up any DCs for domain %s\n", 
+				  domain));
+			return False;
 		}
-		/* Didn't get name, remember not to talk to this DC. */
-		exclude_ip = ip_list[0];
-		SAFE_FREE(ip_list);
-	}
 
-	if (!get_dc_list(False, domain, &ip_list, &count)) {
-		DEBUG(3, ("Could not look up dc's for domain %s\n", domain));
-		return False;
-	}
+		ip_list = (struct in_addr *)malloc(sizeof(struct in_addr));
 
-	/* Remove the entry we've already failed with (should be the PDC). */
-	for (i = 0; i < count; i++) {
-		if (ip_equal( exclude_ip, ip_list[i]))
-			zero_ip(&ip_list[i]);
-	}
-
-	/* Pick a nice close server */
-	/* Look for DC on local net */
-	for (i = 0; i < count; i++) {
-		if (is_zero_ip(ip_list[i]))
-			continue;
+		if (!ip_list)
+			return False;
 
-		if (!is_local_net(ip_list[i]))
-			continue;
-		
-		if (name_status_find(domain, 0x1c, 0x20, ip_list[i], srv_name)) {
-			*dc_ip = ip_list[i];
-			SAFE_FREE(ip_list);
-			return True;
-		}
-		zero_ip(&ip_list[i]);
+		ip_list[0] = pdc_ip;
+		count = 1;
 	}
 
-	/*
-	 * Secondly try and contact a random PDC/BDC.
-	 */
-
-	i = (sys_random() % count);
-
-	if (!is_zero_ip(ip_list[i]) &&
-	    name_status_find(domain, 0x1c, 0x20,
-			     ip_list[i], srv_name)) {
-		*dc_ip = ip_list[i];
-		SAFE_FREE(ip_list);
-		return True;
+	/* Pick a nice close server */
+	if (count > 1) {
+		qsort(ip_list, count, sizeof(struct in_addr), QSORT_CAST ip_compare);
 	}
-	zero_ip(&ip_list[i]); /* Tried and failed. */
 
-	/* Finally return first DC that we can contact using a node
-	   status */
 	for (i = 0; i < count; i++) {
 		if (is_zero_ip(ip_list[i]))
 			continue;
@@ -215,6 +177,7 @@ static BOOL cm_rpc_find_dc(const char *domain, struct in_addr *dc_ip, fstring sr
 		}
 	}
 
+
 	SAFE_FREE(ip_list);
 
 	return False;
diff --git a/source3/rpcclient/samsync.c b/source3/rpcclient/samsync.c
index fb07123b77..cbc3601812 100644
--- a/source3/rpcclient/samsync.c
+++ b/source3/rpcclient/samsync.c
@@ -494,8 +494,7 @@ static struct cli_state *init_connection(struct cli_state **cli,
                                          char *password)
 {
         extern pstring global_myname;
-        struct in_addr *dest_ip;
-        int count;
+        struct in_addr pdc_ip;
         fstring dest_host;
 
 	/* Initialise myname */
@@ -511,13 +510,13 @@ static struct cli_state *init_connection(struct cli_state **cli,
 
         /* Look up name of PDC controller */
 
-        if (!get_dc_list(True, lp_workgroup(), &dest_ip, &count)) {
+        if (!get_pdc_ip(lp_workgroup(), &pdc_ip)) {
                 DEBUG(0, ("Cannot find domain controller for domain %s\n",
                           lp_workgroup()));
                 return NULL;
         }
 
-        if (!lookup_dc_name(global_myname, lp_workgroup(), dest_ip, 
+        if (!lookup_dc_name(global_myname, lp_workgroup(), pdc_ip, 
 			    dest_host)) {
                 DEBUG(0, ("Could not lookup up PDC name for domain %s\n",
                           lp_workgroup()));
@@ -525,7 +524,7 @@ static struct cli_state *init_connection(struct cli_state **cli,
         }
 
 	if (NT_STATUS_IS_OK(cli_full_connection(cli, global_myname, dest_host,
-						dest_ip, 0,
+						pdc_ip, 0,
 						"IPC$", "IPC",  
 						username, domain,
 						password, 0))) {
diff --git a/source3/smbd/change_trust_pw.c b/source3/smbd/change_trust_pw.c
index 5da735e875..7cb9084072 100644
--- a/source3/smbd/change_trust_pw.c
+++ b/source3/smbd/change_trust_pw.c
@@ -105,12 +105,11 @@ account password for domain %s.\n", domain));
        * We have been asked to dynamcially determine the IP addresses of the PDC.
        */
 
-      struct in_addr *ip_list = NULL;
-      int count = 0;
-      int i;
+      struct in_addr pdc_ip;
+      fstring dc_name;
 
       /* Use the PDC *only* for this. */
-      if(!get_dc_list(True, domain, &ip_list, &count))
+      if(!get_pdc_ip(domain, &pdc_ip))
         continue;
 
       /*
@@ -118,16 +117,11 @@ account password for domain %s.\n", domain));
        * address used as a string.
        */
 
-      for(i = 0; i < count; i++) {
-        fstring dc_name;
-        if(!lookup_dc_name(global_myname, domain, &ip_list[i], dc_name))
+        if(!lookup_dc_name(global_myname, domain, &pdc_ip, dc_name))
           continue;
         if(NT_STATUS_IS_OK(res = modify_trust_password( domain, dc_name,
                                          old_trust_passwd_hash)))
           break;
-      }
-
-      SAFE_FREE(ip_list);
 
     } else {
 	    res = modify_trust_password( domain, remote_machine,
diff --git a/source3/utils/net.c b/source3/utils/net.c
index d38ca58622..27713d863f 100644
--- a/source3/utils/net.c
+++ b/source3/utils/net.c
@@ -180,20 +180,15 @@ BOOL net_find_server(unsigned flags, struct in_addr *server_ip, char **server_na
 			return False;
 		}
 	} else if (flags & NET_FLAGS_PDC) {
-		struct in_addr *ip_list;
-		int addr_count;
-		if (get_dc_list(True /* PDC only*/, opt_target_workgroup, &ip_list, &addr_count)) {
+		struct in_addr pdc_ip;
+
+		if (get_pdc_ip(opt_target_workgroup, &pdc_ip)) {
 			fstring dc_name;
-			if (addr_count < 1) {
-				return False;
-			}
-			
-			*server_ip = *ip_list;
 			
-			if (is_zero_ip(*server_ip))
+			if (is_zero_ip(pdc_ip))
 				return False;
 			
-			if (!lookup_dc_name(global_myname, opt_target_workgroup, server_ip, dc_name))
+			if (!lookup_dc_name(global_myname, opt_target_workgroup, &pdc_ip, dc_name))
 				return False;
 				
 			*server_name = strdup(dc_name);
@@ -236,17 +231,9 @@ BOOL net_find_server(unsigned flags, struct in_addr *server_ip, char **server_na
 
 BOOL net_find_dc(struct in_addr *server_ip, fstring server_name, const char *domain_name)
 {
-	struct in_addr *ip_list;
-	int addr_count;
-
-	if (get_dc_list(True /* PDC only*/, domain_name, &ip_list, &addr_count)) {
+	if (get_pdc_ip(domain_name, server_ip)) {
 		fstring dc_name;
-		if (addr_count < 1) {
-			return False;
-		}
 			
-		*server_ip = *ip_list;
-		
 		if (is_zero_ip(*server_ip))
 			return False;
 		
diff --git a/source3/utils/net_lookup.c b/source3/utils/net_lookup.c
index f76b186251..32921de620 100644
--- a/source3/utils/net_lookup.c
+++ b/source3/utils/net_lookup.c
@@ -79,8 +79,8 @@ static int net_lookup_ldap(int argc, const char **argv)
 #ifdef HAVE_LDAP
 	char *srvlist;
 	const char *domain;
-	int rc, count;
-	struct in_addr *addr;
+	int rc;
+	struct in_addr addr;
 	struct hostent *hostent;
 
 	if (argc > 0)
@@ -96,10 +96,10 @@ static int net_lookup_ldap(int argc, const char **argv)
 	}
 
      	DEBUG(9, ("Looking up DC for domain %s\n", domain));
-	if (!get_dc_list(True, domain, &addr, &count))
+	if (!get_pdc_ip(domain, &addr))
 		return -1;
 
-	hostent = gethostbyaddr((char *) &addr->s_addr, sizeof(addr->s_addr),
+	hostent = gethostbyaddr((char *) &addr.s_addr, sizeof(addr.s_addr),
 				AF_INET);
 	if (!hostent)
 		return -1;
@@ -124,7 +124,7 @@ static int net_lookup_ldap(int argc, const char **argv)
 
 static int net_lookup_dc(int argc, const char **argv)
 {
-	struct in_addr *ip_list;
+	struct in_addr *ip_list, addr;
 	char *pdc_str = NULL;
 	const char *domain=opt_target_workgroup;
 	int count, i;
@@ -133,13 +133,13 @@ static int net_lookup_dc(int argc, const char **argv)
 		domain=argv[0];
 
 	/* first get PDC */
-	if (!get_dc_list(True, domain, &ip_list, &count))
+	if (!get_pdc_ip(domain, &addr))
 		return -1;
 
-	asprintf(&pdc_str, "%s", inet_ntoa(*ip_list));
+	asprintf(&pdc_str, "%s", inet_ntoa(addr));
 	d_printf("%s\n", pdc_str);
 
-	if (!get_dc_list(False, domain, &ip_list, &count)) {
+	if (!get_dc_list(domain, &ip_list, &count)) {
 		SAFE_FREE(pdc_str);
 		return 0;
 	}
-- 
cgit