builtin alias password API

(This used to be commit 58c0f0a77c396a6021596c84d4a30b1c9a4b1419)

2 files changed, 727 insertions, 0 deletions

diff --git a/source3/groupdb/builtindb.c b/source3/groupdb/builtindb.c
new file mode 100644
index 0000000000..a840c396f9
--- /dev/null
+++ b/source3/groupdb/builtindb.c
@@ -0,0 +1,459 @@
+/* 
+   Unix SMB/Netbios implementation.
+   Version 1.9.
+   Pasesword and authentication handling
+   Copyright (C) Jeremy Allison 1996-1998
+   Copyright (C) Luke Kenneth Caseson Leighton 1996-1998
+      
+   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
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mases Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "nterr.h"
+
+extern int DEBUGLEVEL;
+
+extern fstring global_sam_name;
+extern DOM_SID global_sam_sid;
+
+/*
+ * NOTE. All these functions are abstracted into a structure
+ * that points to the correct function for the selected database. JRA.
+ */
+
+static struct aliasdb_ops *bidb_ops = NULL;
+
+/***************************************************************
+ Initialise the builtin db operations.
+***************************************************************/
+
+BOOL initialise_builtin_db(void)
+{
+  if (bidb_ops)
+  {
+    return True;
+  }
+
+#ifdef WITH_NISPLUS
+  bidb_ops =  nisplus_initialise_builtin_db();
+#elif defined(WITH_LDAP)
+  bidb_ops = ldap_initialise_builtin_db();
+#elif defined(USE_SMBUNIX_DB)
+  bidb_ops = unix_initialise_builtin_db();
+#endif 
+
+  return (bidb_ops != NULL);
+}
+
+/*
+ * Functions that return/manipulate a LOCAL_GRP.
+ */
+
+/************************************************************************
+ Utility function to search builtin database by gid: the LOCAL_GRP
+ structure does not have a gid member, so we have to convert here
+ from gid to builtin rid.
+*************************************************************************/
+LOCAL_GRP *iterate_getbuiltingid(gid_t gid, LOCAL_GRP_MEMBER **mem, int *num_mem)
+{
+	DOM_NAME_MAP gmep;
+	uint32 rid;
+	if (!lookupsmbgrpgid(gid, &gmep))
+	{
+		DEBUG(0,("iterate_getbuiltingid: gid %d does not map to one of our Domain's Aliases\n", gid));
+		return NULL;
+	}
+
+	if (gmep.type != SID_NAME_ALIAS )
+	{
+		DEBUG(0,("iterate_getbuiltingid: gid %d does not map to one of our Domain's Aliases\n", gid));
+		return NULL;
+	}
+
+	sid_split_rid(&gmep.sid, &rid);
+	if (!sid_equal(&gmep.sid, &global_sam_sid))
+	{
+		DEBUG(0,("iterate_getbuiltingid: gid %d does not map into our Domain SID\n", gid));
+		return NULL;
+	}
+
+	return iterate_getbuiltinrid(rid, mem, num_mem);
+}
+
+/************************************************************************
+ Utility function to search builtin database by rid.  use this if your database
+ does not have search facilities.
+*************************************************************************/
+LOCAL_GRP *iterate_getbuiltinrid(uint32 rid, LOCAL_GRP_MEMBER **mem, int *num_mem)
+{
+	LOCAL_GRP *blt = NULL;
+	void *fp = NULL;
+
+	DEBUG(10, ("search by rid: 0x%x\n", rid));
+
+	/* Open the builtin database file - not for update. */
+	fp = startbuiltinent(False);
+
+	if (fp == NULL)
+	{
+		DEBUG(0, ("unable to open builtin database.\n"));
+		return NULL;
+	}
+
+	while ((blt = getbuiltinent(fp, mem, num_mem)) != NULL && blt->rid != rid)
+	{
+		DEBUG(10,("iterate: %s 0x%x", blt->name, blt->rid));
+	}
+
+	if (blt != NULL)
+	{
+		DEBUG(10, ("found builtin %s by rid: 0x%x\n", blt->name, rid));
+	}
+
+	endbuiltinent(fp);
+	return blt;
+}
+
+/************************************************************************
+ Utility function to search builtin database by name.  use this if your database
+ does not have search facilities.
+*************************************************************************/
+LOCAL_GRP *iterate_getbuiltinntnam(const char *name, LOCAL_GRP_MEMBER **mem, int *num_mem)
+{
+	LOCAL_GRP *blt = NULL;
+	void *fp = NULL;
+
+	DEBUG(10, ("search by name: %s\n", name));
+
+	/* Open the builtin database file - not for update. */
+	fp = startbuiltinent(False);
+
+	if (fp == NULL)
+	{
+		DEBUG(0, ("unable to open builtin database.\n"));
+		return NULL;
+	}
+
+	while ((blt = getbuiltinent(fp, mem, num_mem)) != NULL && !strequal(blt->name, name))
+	{
+	}
+
+	if (blt != NULL)
+	{
+		DEBUG(10, ("found by name: %s\n", name));
+	}
+
+	endbuiltinent(fp);
+	return blt;
+}
+
+/*************************************************************************
+ Routine to return the next entry in the smbdomainbuiltin list.
+ *************************************************************************/
+BOOL add_domain_builtin(LOCAL_GRP **blts, int *num_blts, LOCAL_GRP *blt)
+{
+	if (blts == NULL || num_blts == NULL || blt == NULL)
+	{
+		return False;
+	}
+
+	(*blts) = Realloc((*blts), ((*num_blts)+1) * sizeof(LOCAL_GRP));
+	if ((*blts) == NULL)
+	{
+		return False;
+	}
+
+	DEBUG(10,("adding builtin %s(%s)\n", blt->name, blt->comment));
+
+	fstrcpy((*blts)[(*num_blts)].name   , blt->name);
+	fstrcpy((*blts)[(*num_blts)].comment, blt->comment);
+	(*blts)[(*num_blts)].rid = blt->rid;
+
+	(*num_blts)++;
+
+	return True;
+}
+
+/*************************************************************************
+ checks to see if a user is a member of a domain builtin
+ *************************************************************************/
+static BOOL user_is_member(const char *user_name, LOCAL_GRP_MEMBER *mem, int num_mem)
+{
+	int i;
+	pstring name;
+	slprintf(name, sizeof(name)-1, "%s\\%s", global_sam_name, user_name);
+
+	for (i = 0; i < num_mem; i++)
+	{
+		DEBUG(10,("searching against user %s...\n", mem[i].name));
+		if (strequal(mem[i].name, name))
+		{
+			DEBUG(10,("searching for user %s: found\n", name));
+			return True;
+		}
+	}
+	DEBUG(10,("searching for user %s: not found\n", name));
+	return False;
+}
+
+/*************************************************************************
+ gets an array of builtin aliases that a user is in.  use this if your database
+ does not have search facilities
+ *************************************************************************/
+BOOL iterate_getuserbuiltinntnam(const char *user_name, LOCAL_GRP **blts, int *num_blts)
+{
+	LOCAL_GRP *blt = NULL;
+	LOCAL_GRP_MEMBER *mem = NULL;
+	int num_mem = 0;
+	void *fp = NULL;
+
+	DEBUG(10, ("search for userbuiltin by name: %s\n", user_name));
+
+	if (user_name == NULL || blts == NULL || num_blts == NULL)
+	{
+		return False;
+	}
+
+	(*blts) = NULL;
+	(*num_blts) = 0;
+
+	/* Open the builtin database file - not for update. */
+	fp = startbuiltinent(False);
+
+	if (fp == NULL)
+	{
+		DEBUG(0, ("unable to open builtin database.\n"));
+		return False;
+	}
+
+	/* iterate through all builtin aliases.  search members for required user */
+	while ((blt = getbuiltinent(fp, &mem, &num_mem)) != NULL)
+	{
+		DEBUG(5,("builtin name %s members: %d\n", blt->name, num_mem));
+		if (num_mem != 0 && mem != NULL)
+		{
+			BOOL ret = True;
+			if (user_is_member(user_name, mem, num_mem))
+			{
+				ret = add_domain_builtin(blts, num_blts, blt);
+			}
+
+			free(mem);
+			mem = NULL;
+			num_mem = 0;
+
+			if (!ret)
+			{
+				(*num_blts) = 0;
+				break;
+			}
+		}
+	}
+
+	if ((*num_blts) != 0)
+	{
+		DEBUG(10, ("found %d user builtin aliases:\n", (*num_blts)));
+	}
+
+	endbuiltinent(fp);
+	return True;
+}
+
+/*************************************************************************
+ gets an array of builtin aliases that a user is in.  use this if your database
+ does not have search facilities
+ *************************************************************************/
+BOOL enumdombuiltins(LOCAL_GRP **blts, int *num_blts)
+{
+	LOCAL_GRP *blt = NULL;
+	void *fp = NULL;
+
+	DEBUG(10, ("enum user builtin aliases\n"));
+
+	if (blts == NULL || num_blts == NULL)
+	{
+		return False;
+	}
+
+	(*blts) = NULL;
+	(*num_blts) = 0;
+
+	/* Open the builtin database file - not for update. */
+	fp = startbuiltinent(False);
+
+	if (fp == NULL)
+	{
+		DEBUG(0, ("unable to open builtin database.\n"));
+		return False;
+	}
+
+	/* iterate through all builtin aliases. */
+	while ((blt = getbuiltinent(fp, NULL, NULL)) != NULL)
+	{
+		if (!add_domain_builtin(blts, num_blts, blt))
+		{
+			DEBUG(0,("unable to add builtin while enumerating\n"));
+			return False;
+		}
+	}
+
+	if ((*num_blts) != 0)
+	{
+		DEBUG(10, ("found %d user builtin aliases:\n", (*num_blts)));
+	}
+
+	endbuiltinent(fp);
+	return True;
+}
+
+/***************************************************************
+ Start to enumerate the builtin database list. Returns a void pointer
+ to ensure no modification outside this module.
+****************************************************************/
+
+void *startbuiltinent(BOOL update)
+{
+  return bidb_ops->startaliasent(update);
+}
+
+/***************************************************************
+ End enumeration of the builtin database list.
+****************************************************************/
+
+void endbuiltinent(void *vp)
+{
+  bidb_ops->endaliasent(vp);
+}
+
+/*************************************************************************
+ Routine to return the next entry in the builtin database list.
+ *************************************************************************/
+
+LOCAL_GRP *getbuiltinent(void *vp, LOCAL_GRP_MEMBER **mem, int *num_mem)
+{
+	return bidb_ops->getaliasent(vp, mem, num_mem);
+}
+
+/************************************************************************
+ Routine to add an entry to the builtin database file.
+*************************************************************************/
+
+BOOL add_builtin_entry(LOCAL_GRP *newblt)
+{
+ 	return bidb_ops->add_alias_entry(newblt);
+}
+
+/************************************************************************
+ Routine to search the builtin database file for an entry matching the builtinname.
+ and then replace the entry.
+************************************************************************/
+
+BOOL mod_builtin_entry(LOCAL_GRP* blt)
+{
+ 	return bidb_ops->mod_alias_entry(blt);
+}
+
+/************************************************************************
+ Routine to search builtin database by name.
+*************************************************************************/
+
+LOCAL_GRP *getbuiltinntnam(const char *name, LOCAL_GRP_MEMBER **mem, int *num_mem)
+{
+	return bidb_ops->getaliasntnam(name, mem, num_mem);
+}
+
+/************************************************************************
+ Routine to search builtin database by builtin rid.
+*************************************************************************/
+
+LOCAL_GRP *getbuiltinrid(uint32 builtin_rid, LOCAL_GRP_MEMBER **mem, int *num_mem)
+{
+	return bidb_ops->getaliasrid(builtin_rid, mem, num_mem);
+}
+
+/************************************************************************
+ Routine to search builtin database by gid.
+*************************************************************************/
+
+LOCAL_GRP *getbuiltingid(gid_t gid, LOCAL_GRP_MEMBER **mem, int *num_mem)
+{
+	return bidb_ops->getaliasgid(gid, mem, num_mem);
+}
+
+/*************************************************************************
+ gets an array of builtin aliases that a user is in.
+ *************************************************************************/
+BOOL getuserbuiltinntnam(const char *user_name, LOCAL_GRP **blt, int *num_blts)
+{
+	return bidb_ops->getuseraliasntnam(user_name, blt, num_blts);
+}
+
+/*************************************************************
+ initialises a LOCAL_GRP.
+ **************************************************************/
+void bidb_init_blt(LOCAL_GRP *blt)
+{
+	if (blt == NULL) return;
+	ZERO_STRUCTP(blt);
+}
+
+/*************************************************************
+ turns an builtin entry into a string.
+ **************************************************************/
+BOOL make_builtin_line(char *p, int max_len,
+				LOCAL_GRP *blt,
+				LOCAL_GRP_MEMBER **mem, int *num_mem)
+{
+	int i;
+	int len;
+	len = slprintf(p, max_len-1, "%s:%s:%d:", blt->name, blt->comment, blt->rid);
+
+	if (len == -1)
+	{
+		DEBUG(0,("make_builtin_line: cannot create entry\n"));
+		return False;
+	}
+
+	p += len;
+	max_len -= len;
+
+	if (mem == NULL || num_mem == NULL)
+	{
+		return True;
+	}
+
+	for (i = 0; i < (*num_mem); i++)
+	{
+		len = strlen((*mem)[i].name);
+		p = safe_strcpy(p, (*mem)[i].name, max_len); 
+
+		if (p == NULL)
+		{
+			DEBUG(0, ("make_builtin_line: out of space for builtin aliases!\n"));
+			return False;
+		}
+
+		max_len -= len;
+
+		if (i != (*num_mem)-1)
+		{
+			*p = ',';
+			p++;
+			max_len--;
+		}
+	}
+
+	return True;
+}
diff --git a/source3/groupdb/builtinunix.c b/source3/groupdb/builtinunix.c
new file mode 100644
index 0000000000..dc70ffb3dc
--- /dev/null
+++ b/source3/groupdb/builtinunix.c
@@ -0,0 +1,268 @@
+/*
+ * Unix SMB/Netbios implementation. Version 1.9. SMB parameters and setup
+ * Copyright (C) Andrew Tridgell 1992-1998 Modified by Jeremy Allison 1995.
+ * 
+ * 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 the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ * 
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 675
+ * Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "includes.h"
+
+#ifdef USE_SMBUNIX_DB
+
+extern int DEBUGLEVEL;
+
+
+extern DOM_SID global_sid_S_1_5_20;
+extern DOM_SID global_sam_sid;
+extern fstring global_sam_name;
+
+/***************************************************************
+ Start to enumerate the bltpasswd list. Returns a void pointer
+ to ensure no modification outside this module.
+****************************************************************/
+
+static void *startbltunixpwent(BOOL update)
+{
+	setgrent();
+	return (void*)(-1);
+}
+
+/***************************************************************
+ End enumeration of the bltpasswd list.
+****************************************************************/
+
+static void endbltunixpwent(void *vp)
+{
+	endgrent();
+}
+
+/*************************************************************************
+ Return the current position in the bltpasswd list as an SMB_BIG_UINT.
+ This must be treated as an opaque token.
+*************************************************************************/
+static SMB_BIG_UINT getbltunixpwpos(void *vp)
+{
+	return (SMB_BIG_UINT)0;
+}
+
+/*************************************************************************
+ Set the current position in the bltpasswd list from an SMB_BIG_UINT.
+ This must be treated as an opaque token.
+*************************************************************************/
+static BOOL setbltunixpwpos(void *vp, SMB_BIG_UINT tok)
+{
+	return False;
+}
+
+/*************************************************************************
+ Routine to return the next entry in the smbdomainbuiltin list.
+ *************************************************************************/
+BOOL get_unixbuiltin_members(struct group *grp,
+				int *num_mem, LOCAL_GRP_MEMBER **members)
+{
+	int i;
+	char *unix_name;
+
+	if (num_mem == NULL || members == NULL)
+	{
+		return False;
+	}
+
+	(*num_mem) = 0;
+	(*members) = NULL;
+
+	for (i = 0; (unix_name = grp->gr_mem[i]) != NULL; i++)
+	{
+		fstring name;
+		DOM_NAME_MAP gmep;
+		LOCAL_GRP_MEMBER *mem;
+
+		fstrcpy(name, unix_name);
+
+		if (!lookupsmbgrpnam(name, &gmep) &&
+		    !lookupsmbpwnam (name, &gmep))
+		{
+			continue;
+		}
+
+		if (!sid_front_equal(&global_sam_sid, &gmep.sid))
+		{
+			DEBUG(0,("builtin database: could not resolve name %s (wrong Domain SID)\n",
+			          name));
+			continue;
+		}
+
+		(*num_mem)++;
+		(*members) = Realloc((*members), (*num_mem) * sizeof(LOCAL_GRP_MEMBER));
+		if ((*members) == NULL)
+		{
+			DEBUG(0,("get_unixbuiltin_members: could not realloc LOCAL_GRP_MEMBERs\n"));
+			return False;
+		}
+
+		mem = &(*members)[(*num_mem)-1];
+		slprintf(mem->name, sizeof(mem->name)-1, "%s\\%s",
+		         gmep.nt_domain, gmep.nt_name);
+		sid_copy(&mem->sid, &gmep.sid);
+		mem->sid_use = gmep.type;
+
+		DEBUG(10,("get_unixbuiltin_members: adding to builtin alias %s\n",
+		           mem->name));
+	}
+	return True;
+}
+
+/*************************************************************************
+ Routine to return the next entry in the domain builtin list.
+
+ when we are a PDC or BDC, then unix groups that are explicitly NOT mapped
+ to builtin aliases are treated as DOMAIN groups (see groupunix.c).
+
+ when we are a member of a domain (not a PDC or BDC) then unix groups
+ that are explicitly NOT mapped to builtin aliases are treated
+ as LOCAL groups.
+
+ the reasoning behind this is to make it as simple as possible (not an easy
+ task) for people to set up a domain-aware samba server, in each role that
+ the server can take.
+
+ *************************************************************************/
+static LOCAL_GRP *getbltunixpwent(void *vp, LOCAL_GRP_MEMBER **mem, int *num_mem)
+{
+	/* Static buffers we will return. */
+	static LOCAL_GRP gp_buf;
+	struct group *unix_grp;
+
+	if (lp_server_role() == ROLE_DOMAIN_NONE)
+	{
+		/*
+		 * no domain role, no domain builtin aliases (or domain groups,
+		 * but that's dealt with by groupdb...).
+		 */
+
+		return NULL;
+	}
+
+	bidb_init_blt(&gp_buf);
+
+	/* cycle through unix groups */
+	while ((unix_grp = getgrent()) != NULL)
+	{
+		DOM_NAME_MAP gmep;
+		fstring sid_str;
+		DEBUG(10,("getbltunixpwent: enum unix group entry %s\n",
+		           unix_grp->gr_name));
+			
+		if (!lookupsmbgrpgid(unix_grp->gr_gid, &gmep))
+		{
+			continue;
+		}
+
+		sid_to_string(sid_str, &gmep.sid);
+		DEBUG(10,("group %s found, sid %s type %d\n",
+			gmep.nt_name, sid_str, gmep.type));
+
+		if (gmep.type != SID_NAME_ALIAS)
+		{
+			continue;
+		}
+
+		sid_split_rid(&gmep.sid, &gp_buf.rid);
+		if (!sid_equal(&global_sid_S_1_5_20, &gmep.sid))
+		{
+			continue;
+		}
+
+		fstrcpy(gp_buf.name, gmep.nt_name);
+		break;
+	}
+
+	if (unix_grp == NULL)
+	{
+		return NULL;
+	}
+
+	/* get the user's domain builtin aliases.  there are a maximum of 32 */
+
+	if (mem != NULL && num_mem != NULL)
+	{
+		(*mem) = NULL;
+		(*num_mem) = 0;
+
+		get_unixbuiltin_members(unix_grp, num_mem, mem);
+	}
+
+	{
+		pstring linebuf;
+		make_builtin_line(linebuf, sizeof(linebuf), &gp_buf, mem, num_mem);
+		DEBUG(10,("line: '%s'\n", linebuf));
+	}
+
+	return &gp_buf;
+}
+
+/************************************************************************
+ Routine to add an entry to the bltpasswd file.
+*************************************************************************/
+
+static BOOL add_bltunixgrp_entry(LOCAL_GRP *newblt)
+{
+	DEBUG(0, ("add_bltunixgrp_entry: NOT IMPLEMENTED\n"));
+	return False;
+}
+
+/************************************************************************
+ Routine to search the bltpasswd file for an entry matching the builtinname.
+ and then modify its builtin entry. We can't use the startbltpwent()/
+ getbltpwent()/endbltpwent() interfaces here as we depend on looking
+ in the actual file to decide how much room we have to write data.
+ override = False, normal
+ override = True, override XXXXXXXX'd out builtin or NO PASS
+************************************************************************/
+
+static BOOL mod_bltunixgrp_entry(LOCAL_GRP* blt)
+{
+	DEBUG(0, ("mod_bltunixgrp_entry: NOT IMPLEMENTED\n"));
+	return False;
+}
+
+
+static struct aliasdb_ops unix_ops =
+{
+	startbltunixpwent,
+	endbltunixpwent,
+	getbltunixpwpos,
+	setbltunixpwpos,
+
+	iterate_getbuiltinntnam,          /* In builtindb.c */
+	iterate_getbuiltingid,          /* In builtindb.c */
+	iterate_getbuiltinrid,          /* In builtindb.c */
+	getbltunixpwent,
+
+	add_bltunixgrp_entry,
+	mod_bltunixgrp_entry,
+
+	iterate_getuserbuiltinntnam      /* in builtindb.c */
+};
+
+struct aliasdb_ops *unix_initialise_builtin_db(void)
+{    
+	return &unix_ops;
+}
+
+#else
+ /* Do *NOT* make this function static. It breaks the compile on gcc. JRA */
+ void unix_bltpass_dummy_function(void) { } /* stop some compilers complaining */
+#endif /* USE_SMBPASS_DB */