Split smbldap in a core file and a utility file

Add module support for configuration loading

Add a first implementation of config_ldap module to put samba configuration
on ldap

It worked on my test machine, please try it out and send bugfixes :-)

have fun,
Simo.

INSTRUCTIONS:


Just add something like  this to your smb.conf file:
        config backend = config_ldap:ldap://localhost
        config_ldap:basedn = dc=samba,dc=org

the config tree must follow this scheme:
   ou=foo, dc=samba, dc=org <- global section
   |- sambaOptionName=log level, ou=foo, ...  <- options
   |- ...
   |- sambaShareName=testlc, ou=foo, ...  == [testlc]
      |- sambaOptionName=path, sambaShareName=testlc, ou=foo, ... <- option


here is a sample ldif:
# foo, samba, org
dn: ou=foo, dc=samba, dc=org
objectClass: organizationalUnit
objectClass: sambaConfig
ou: foo
description: Test Foo

# log level, foo, samba, org
dn: sambaOptionName=log level, ou=foo, dc=samba, dc=org
objectClass: sambaConfigOption
sambaOptionName: log level
sambaIntegerOption: 10
description: log level 10 is suitable for good debugging

# testlc, foo, samba, org
dn: sambaShareName=testlc, ou=foo, dc=samba, dc=org
objectClass: sambaShare
sambaShareName: testlc
description: share to test ldap config module actually works

# path, testlc, foo, samba, org
dn: sambaOptionName=path, sambaShareName=testlc, ou=foo, dc=samba, dc=org
objectClass: sambaConfigOption
sambaOptionName: path
sambaStringOption: /tmp
description: Path for share testlc

# read only, testlc, foo, samba, org
dn: sambaOptionName=read only, sambaShareName=testlc, ou=foo, dc=samba,
dc=org
objectClass: sambaConfigOption
sambaOptionName: read only
sambaBoolOption: TRUE
description: Share testlc is read only

# guest ok, testlc, foo, samba, org
dn: sambaOptionName=guest ok, sambaShareName=testlc, ou=foo, dc=samba,
dc=org
objectClass: sambaConfigOption
sambaOptionName: guest ok
sambaBoolOption: TRUE
description: Guest users are allowed to connect to testlc share
(This used to be commit 207968eafc2c2a185e50e2132702d7bab2142aba)

1 files changed, 203 insertions, 0 deletions

diff --git a/source3/lib/smbldap_util.c b/source3/lib/smbldap_util.c
new file mode 100644
index 0000000000..f6097599bc
--- /dev/null
+++ b/source3/lib/smbldap_util.c
@@ -0,0 +1,203 @@
+/* 
+   Unix SMB/CIFS mplementation.
+   LDAP protocol helper functions for SAMBA
+   Copyright (C) Jean François Micouleau	1998
+   Copyright (C) Gerald Carter			2001-2003
+   Copyright (C) Shahms King			2001
+   Copyright (C) Andrew Bartlett		2002-2003
+   Copyright (C) Stefan (metze) Metzmacher	2002-2003
+    
+   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"
+#include "smbldap.h"
+
+/**********************************************************************
+ Add the sambaDomain to LDAP, so we don't have to search for this stuff
+ again.  This is a once-add operation for now.
+
+ TODO:  Add other attributes, and allow modification.
+*********************************************************************/
+static NTSTATUS add_new_domain_info(struct smbldap_state *ldap_state, 
+                                    const char *domain_name) 
+{
+	fstring sid_string;
+	fstring algorithmic_rid_base_string;
+	pstring filter, dn;
+	LDAPMod **mods = NULL;
+	int rc;
+	int ldap_op;
+	LDAPMessage *result = NULL;
+	int num_result;
+	char **attr_list;
+	uid_t u_low, u_high;
+	gid_t g_low, g_high;
+	uint32 rid_low, rid_high;
+
+	slprintf (filter, sizeof (filter) - 1, "(&(%s=%s)(objectclass=%s))", 
+		  get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN), 
+		  domain_name, LDAP_OBJ_DOMINFO);
+
+	attr_list = get_attr_list( dominfo_attr_list );
+	rc = smbldap_search_suffix(ldap_state, filter, attr_list, &result);
+	free_attr_list( attr_list );
+
+	if (rc != LDAP_SUCCESS) {
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
+	num_result = ldap_count_entries(ldap_state->ldap_struct, result);
+	
+	if (num_result > 1) {
+		DEBUG (0, ("More than domain with that name exists: bailing out!\n"));
+		ldap_msgfree(result);
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+	
+	/* Check if we need to add an entry */
+	DEBUG(3,("Adding new domain\n"));
+	ldap_op = LDAP_MOD_ADD;
+
+	pstr_sprintf(dn, "%s=%s,%s", get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
+		domain_name, lp_ldap_suffix());
+
+	/* Free original search */
+	ldap_msgfree(result);
+
+	/* make the changes - the entry *must* not already have samba attributes */
+	smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN), 
+		domain_name);
+
+	/* If we don't have an entry, then ask secrets.tdb for what it thinks.  
+	   It may choose to make it up */
+
+	sid_to_string(sid_string, get_global_sam_sid());
+	smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOM_SID), sid_string);
+
+	slprintf(algorithmic_rid_base_string, sizeof(algorithmic_rid_base_string) - 1, "%i", algorithmic_rid_base());
+	smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_ALGORITHMIC_RID_BASE), 
+			algorithmic_rid_base_string);
+	smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectclass", LDAP_OBJ_DOMINFO);
+	
+	/* add the sambaNext[User|Group]Rid attributes if the idmap ranges are set.
+	   TODO: fix all the places where the line between idmap and normal operations
+	   needed by smbd gets fuzzy   --jerry 2003-08-11                              */
+	
+	if ( lp_idmap_uid(&u_low, &u_high) && lp_idmap_gid(&g_low, &g_high)
+		&& get_free_rid_range(&rid_low, &rid_high) ) 
+	{
+		fstring rid_str;
+		
+		fstr_sprintf( rid_str, "%i", rid_high|USER_RID_TYPE );
+		DEBUG(10,("setting next available user rid [%s]\n", rid_str));
+		smbldap_set_mod(&mods, LDAP_MOD_ADD, 
+			get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_USERRID), 
+			rid_str);
+			
+		fstr_sprintf( rid_str, "%i", rid_high|GROUP_RID_TYPE );
+		DEBUG(10,("setting next available group rid [%s]\n", rid_str));
+		smbldap_set_mod(&mods, LDAP_MOD_ADD, 
+			get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_GROUPRID), 
+			rid_str);
+		
+        }
+
+
+	switch(ldap_op)
+	{
+	case LDAP_MOD_ADD: 
+		rc = smbldap_add(ldap_state, dn, mods);
+		break;
+	case LDAP_MOD_REPLACE: 
+		rc = smbldap_modify(ldap_state, dn, mods);
+		break;
+	default: 	
+		DEBUG(0,("Wrong LDAP operation type: %d!\n", ldap_op));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	
+	if (rc!=LDAP_SUCCESS) {
+		char *ld_error = NULL;
+		ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING, &ld_error);
+		DEBUG(1,("failed to %s domain dn= %s with: %s\n\t%s\n",
+		       ldap_op == LDAP_MOD_ADD ? "add" : "modify",
+		       dn, ldap_err2string(rc),
+		       ld_error?ld_error:"unknown"));
+		SAFE_FREE(ld_error);
+
+		ldap_mods_free(mods, True);
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
+	DEBUG(2,("added: domain = %s in the LDAP database\n", domain_name));
+	ldap_mods_free(mods, True);
+	return NT_STATUS_OK;
+}
+
+/**********************************************************************
+Search for the domain info entry
+*********************************************************************/
+NTSTATUS smbldap_search_domain_info(struct smbldap_state *ldap_state,
+                                    LDAPMessage ** result, const char *domain_name,
+                                    BOOL try_add)
+{
+	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+	pstring filter;
+	int rc;
+	char **attr_list;
+	int count;
+
+	pstr_sprintf(filter, "(&(objectClass=%s)(%s=%s))",
+		LDAP_OBJ_DOMINFO,
+		get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN), 
+		domain_name);
+
+	DEBUG(2, ("Searching for:[%s]\n", filter));
+
+
+	attr_list = get_attr_list( dominfo_attr_list );
+	rc = smbldap_search_suffix(ldap_state, filter, attr_list , result);
+	free_attr_list( attr_list );
+
+	if (rc != LDAP_SUCCESS) {
+		DEBUG(2,("Problem during LDAPsearch: %s\n", ldap_err2string (rc)));
+		DEBUG(2,("Query was: %s, %s\n", lp_ldap_suffix(), filter));
+	} else if (ldap_count_entries(ldap_state->ldap_struct, *result) < 1) {
+		DEBUG(3, ("Got no domain info entries for domain\n"));
+		ldap_msgfree(*result);
+		*result = NULL;
+		if (try_add && NT_STATUS_IS_OK(ret = add_new_domain_info(ldap_state, domain_name))) {
+			return smbldap_search_domain_info(ldap_state, result, domain_name, False);
+		} 
+		else {
+			DEBUG(0, ("Adding domain info for %s failed with %s\n", 
+				domain_name, nt_errstr(ret)));
+			return ret;
+		}
+	} else if ((count = ldap_count_entries(ldap_state->ldap_struct, *result)) > 1) {
+		DEBUG(0, ("Got too many (%d) domain info entries for domain %s\n",
+			  count, domain_name));
+		ldap_msgfree(*result);
+		*result = NULL;
+		return ret;
+	} else {
+		return NT_STATUS_OK;
+	}
+	
+	return ret;
+}
+