1 files changed, 575 insertions, 0 deletions

diff --git a/source4/modules/xml.c b/source4/modules/xml.c
new file mode 100644
index 0000000000..ead3e3a874
--- /dev/null
+++ b/source4/modules/xml.c
@@ -0,0 +1,575 @@
+
+/*
+ * XML password backend for samba
+ * Copyright (C) Jelmer Vernooij 2002
+ * Some parts based on the libxml gjobread example by Daniel Veillard
+ * 
+ * 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.
+ */
+
+/* FIXME: 
+ * - Support stdin input by using '-'
+ * - Be faster. Don't rewrite the whole file when adding a user, but store it in the memory and save it when exiting. Requires changes to samba source.
+ * - Gives the ability to read/write to standard input/output
+ * - Do locking!
+ * - Better names!
+ */
+
+
+#define XML_URL "http://www.samba.org/ns"
+
+#include "includes.h"
+
+#include <libxml/xmlmemory.h>
+#include <libxml/parser.h>
+
+static int xmlsam_debug_level = DBGC_ALL;
+
+#undef DBGC_CLASS
+#define DBGC_CLASS xmlsam_debug_level
+
+static char * iota(int a) {
+	static char tmp[10];
+
+	snprintf(tmp, 9, "%d", a);
+	return tmp;
+}
+
+BOOL parsePass(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur, SAM_ACCOUNT * u)
+{
+	pstring temp;
+
+	cur = cur->xmlChildrenNode;
+	while (cur != NULL) {
+		if (strcmp(cur->name, "crypt"))
+			DEBUG(0, ("Unknown element %s\n", cur->name));
+		else {
+			if (!strcmp(xmlGetProp(cur, "type"), "nt")
+				&&
+				pdb_gethexpwd(xmlNodeListGetString
+							  (doc, cur->xmlChildrenNode, 1), temp))
+				pdb_set_nt_passwd(u, temp, PDB_SET);
+			else if (!strcmp(xmlGetProp(cur, "type"), "lanman")
+					 &&
+					 pdb_gethexpwd(xmlNodeListGetString
+								   (doc, cur->xmlChildrenNode, 1), temp))
+				pdb_set_lanman_passwd(u, temp, PDB_SET);
+			else
+				DEBUG(0,
+					  ("Unknown crypt type: %s\n",
+					   xmlGetProp(cur, "type")));
+		}
+		cur = cur->next;
+	}
+	return True;
+}
+
+BOOL parseUser(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur, SAM_ACCOUNT * u)
+{
+	char *tmp;
+	DOM_SID sid;
+
+	tmp = xmlGetProp(cur, "sid");
+	if (tmp){
+		string_to_sid(&sid, tmp);
+		pdb_set_user_sid(u, &sid, PDB_SET);
+	}
+	tmp = xmlGetProp(cur, "uid");
+	if (tmp)
+		pdb_set_uid(u, atol(tmp), PDB_SET);
+	pdb_set_username(u, xmlGetProp(cur, "name"), PDB_SET);
+	/* We don't care what the top level element name is */
+	cur = cur->xmlChildrenNode;
+	while (cur != NULL) {
+		if ((!strcmp(cur->name, "group")) && (cur->ns == ns)) {
+			tmp = xmlGetProp(cur, "gid");
+			if (tmp)
+				pdb_set_gid(u, atol(tmp), PDB_SET);
+			tmp = xmlGetProp(cur, "sid");
+			if (tmp){
+				string_to_sid(&sid, tmp);
+				pdb_set_group_sid(u, &sid, PDB_SET);
+			}
+		}
+
+		else if ((!strcmp(cur->name, "domain")) && (cur->ns == ns))
+			pdb_set_domain(u,
+						   xmlNodeListGetString(doc, cur->xmlChildrenNode,
+												1), PDB_SET);
+
+		else if (!strcmp(cur->name, "fullname") && cur->ns == ns)
+			pdb_set_fullname(u,
+							 xmlNodeListGetString(doc,
+												  cur->xmlChildrenNode,
+												  1), PDB_SET);
+
+		else if (!strcmp(cur->name, "nt_username") && cur->ns == ns)
+			pdb_set_nt_username(u,
+								xmlNodeListGetString(doc,
+													 cur->xmlChildrenNode,
+													 1), PDB_SET);
+
+		else if (!strcmp(cur->name, "logon_script") && cur->ns == ns)
+			pdb_set_logon_script(u,
+								 xmlNodeListGetString(doc,
+													  cur->xmlChildrenNode,
+													  1), PDB_SET);
+
+		else if (!strcmp(cur->name, "profile_path") && cur->ns == ns)
+			pdb_set_profile_path(u,
+								 xmlNodeListGetString(doc,
+													  cur->xmlChildrenNode,
+													  1), PDB_SET);
+
+		else if (!strcmp(cur->name, "logon_time") && cur->ns == ns)
+			pdb_set_logon_time(u,
+							   atol(xmlNodeListGetString
+									(doc, cur->xmlChildrenNode, 1)), PDB_SET);
+
+		else if (!strcmp(cur->name, "logoff_time") && cur->ns == ns)
+			pdb_set_logoff_time(u,
+								atol(xmlNodeListGetString
+									 (doc, cur->xmlChildrenNode, 1)),
+								PDB_SET);
+
+		else if (!strcmp(cur->name, "kickoff_time") && cur->ns == ns)
+			pdb_set_kickoff_time(u,
+								 atol(xmlNodeListGetString
+									  (doc, cur->xmlChildrenNode, 1)),
+								 PDB_SET);
+
+		else if (!strcmp(cur->name, "logon_divs") && cur->ns == ns)
+			pdb_set_logon_divs(u,
+							   atol(xmlNodeListGetString
+									(doc, cur->xmlChildrenNode, 1)), PDB_SET);
+
+		else if (!strcmp(cur->name, "hours_len") && cur->ns == ns)
+			pdb_set_hours_len(u,
+							  atol(xmlNodeListGetString
+								   (doc, cur->xmlChildrenNode, 1)), PDB_SET);
+
+		else if (!strcmp(cur->name, "unknown_3") && cur->ns == ns)
+			pdb_set_unknown_3(u,
+							  atol(xmlNodeListGetString
+								   (doc, cur->xmlChildrenNode, 1)), PDB_SET);
+
+		else if (!strcmp(cur->name, "unknown_5") && cur->ns == ns)
+			pdb_set_unknown_5(u,
+							  atol(xmlNodeListGetString
+								   (doc, cur->xmlChildrenNode, 1)), PDB_SET);
+
+		else if (!strcmp(cur->name, "unknown_6") && cur->ns == ns)
+			pdb_set_unknown_6(u,
+							  atol(xmlNodeListGetString
+								   (doc, cur->xmlChildrenNode, 1)), PDB_SET);
+
+		else if (!strcmp(cur->name, "homedir") && cur->ns == ns)
+			pdb_set_homedir(u,
+							xmlNodeListGetString(doc, cur->xmlChildrenNode,
+												 1), PDB_SET);
+
+		else if (!strcmp(cur->name, "unknown_str") && cur->ns == ns)
+			pdb_set_unknown_str(u,
+								xmlNodeListGetString(doc,
+													 cur->xmlChildrenNode,
+													 1), PDB_SET);
+
+		else if (!strcmp(cur->name, "dir_drive") && cur->ns == ns)
+			pdb_set_dir_drive(u,
+							  xmlNodeListGetString(doc,
+												   cur->xmlChildrenNode,
+												   1), PDB_SET);
+
+		else if (!strcmp(cur->name, "munged_dial") && cur->ns == ns)
+			pdb_set_munged_dial(u,
+								xmlNodeListGetString(doc,
+													 cur->xmlChildrenNode,
+													 1), PDB_SET);
+
+		else if (!strcmp(cur->name, "acct_desc") && cur->ns == ns)
+			pdb_set_acct_desc(u,
+							  xmlNodeListGetString(doc,
+												   cur->xmlChildrenNode,
+												   1), PDB_SET);
+
+		else if (!strcmp(cur->name, "acct_ctrl") && cur->ns == ns)
+			pdb_set_acct_ctrl(u,
+							  atol(xmlNodeListGetString
+								   (doc, cur->xmlChildrenNode, 1)), PDB_SET);
+
+		else if (!strcmp(cur->name, "workstations") && cur->ns == ns)
+			pdb_set_workstations(u,
+								 xmlNodeListGetString(doc,
+													  cur->xmlChildrenNode,
+													  1), PDB_SET);
+
+		else if ((!strcmp(cur->name, "password")) && (cur->ns == ns)) {
+			tmp = xmlGetProp(cur, "last_set");
+			if (tmp)
+				pdb_set_pass_last_set_time(u, atol(tmp), PDB_SET);
+			tmp = xmlGetProp(cur, "must_change");
+			if (tmp)
+				pdb_set_pass_must_change_time(u, atol(tmp), PDB_SET);
+			tmp = xmlGetProp(cur, "can_change");
+			if (tmp)
+				pdb_set_pass_can_change_time(u, atol(tmp), PDB_SET);
+			parsePass(doc, ns, cur, u);
+		}
+
+		else
+			DEBUG(0, ("Unknown element %s\n", cur->name));
+		cur = cur->next;
+	}
+
+	return True;
+}
+
+typedef struct pdb_xml {
+	char *location;
+	char written;
+	xmlDocPtr doc;
+	xmlNodePtr users;
+	xmlNodePtr pwent;
+	xmlNsPtr ns;
+} pdb_xml;
+
+xmlNodePtr parseSambaXMLFile(struct pdb_xml *data)
+{
+	xmlNodePtr cur;
+
+	data->doc = xmlParseFile(data->location);
+	if (data->doc == NULL)
+		return NULL;
+
+	cur = xmlDocGetRootElement(data->doc);
+	if (!cur) {
+		DEBUG(0, ("empty document\n"));
+		xmlFreeDoc(data->doc);
+		return NULL;
+	}
+	data->ns = xmlSearchNsByHref(data->doc, cur, XML_URL);
+	if (!data->ns) {
+		DEBUG(0,
+			  ("document of the wrong type, samba user namespace not found\n"));
+		xmlFreeDoc(data->doc);
+		return NULL;
+	}
+	if (strcmp(cur->name, "samba")) {
+		DEBUG(0, ("document of the wrong type, root node != samba"));
+		xmlFreeDoc(data->doc);
+		return NULL;
+	}
+
+	cur = cur->xmlChildrenNode;
+	while (cur && xmlIsBlankNode(cur)) {
+		cur = cur->next;
+	}
+	if (!cur)
+		return NULL;
+	if ((strcmp(cur->name, "users")) || (cur->ns != data->ns)) {
+		DEBUG(0, ("document of the wrong type, was '%s', users expected",
+				  cur->name));
+		DEBUG(0, ("xmlDocDump follows\n"));
+		xmlDocDump(stderr, data->doc);
+		DEBUG(0, ("xmlDocDump finished\n"));
+		xmlFreeDoc(data->doc);
+		return NULL;
+	}
+	data->users = cur;
+	cur = cur->xmlChildrenNode;
+	return cur;
+}
+
+static NTSTATUS xmlsam_setsampwent(struct pdb_methods *methods, BOOL update)
+{
+	pdb_xml *data;
+
+	if (!methods) {
+		DEBUG(0, ("Invalid methods\n"));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	data = (pdb_xml *) methods->private_data;
+	if (!data) {
+		DEBUG(0, ("Invalid pdb_xml_data\n"));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	data->pwent = parseSambaXMLFile(data);
+	if (!data->pwent)
+		return NT_STATUS_UNSUCCESSFUL;
+	
+	return NT_STATUS_OK;
+}
+
+/***************************************************************
+  End enumeration of the passwd list.
+ ****************************************************************/
+
+static void xmlsam_endsampwent(struct pdb_methods *methods)
+{
+	pdb_xml *data;
+
+	if (!methods) {
+		DEBUG(0, ("Invalid methods\n"));
+		return;
+	}
+
+	data = (pdb_xml *) methods->private_data;
+
+	if (!data) {
+		DEBUG(0, ("Invalid pdb_xml_data\n"));
+		return;
+	}
+
+	xmlFreeDoc(data->doc);
+	data->doc = NULL;
+	data->pwent = NULL;
+}
+
+/*****************************************************************
+  Get one SAM_ACCOUNT from the list (next in line)
+ *****************************************************************/
+
+static NTSTATUS xmlsam_getsampwent(struct pdb_methods *methods, SAM_ACCOUNT * user)
+{
+	pdb_xml *data;
+
+	if (!methods) {
+		DEBUG(0, ("Invalid methods\n"));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	data = (pdb_xml *) methods->private_data;
+
+	if (!data) {
+		DEBUG(0, ("Invalid pdb_xml_data\n"));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	while (data->pwent) {
+		if ((!strcmp(data->pwent->name, "user")) &&
+			(data->pwent->ns == data->ns)) {
+
+			parseUser(data->doc, data->ns, data->pwent, user);
+			data->pwent = data->pwent->next;
+			return NT_STATUS_OK;
+		}
+		data->pwent = data->pwent->next;
+	}
+	return NT_STATUS_UNSUCCESSFUL;
+}
+
+/***************************************************************************
+  Adds an existing SAM_ACCOUNT
+ ****************************************************************************/
+
+static NTSTATUS xmlsam_add_sam_account(struct pdb_methods *methods, SAM_ACCOUNT * u)
+{
+	pstring temp;
+	fstring sid_str;
+	xmlNodePtr cur, user, pass, root;
+	pdb_xml *data;
+
+	DEBUG(10, ("xmlsam_add_sam_account called!\n"));
+
+	if (!methods) {
+		DEBUG(0, ("Invalid methods\n"));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	data = (pdb_xml *) methods->private_data;
+	if (!data) {
+		DEBUG(0, ("Invalid pdb_xml_data\n"));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* Create a new document if we can't open the current one */
+	if (!parseSambaXMLFile(data)) {
+		DEBUG(0, ("Can't load current XML file, creating a new one\n"));
+		data->doc = xmlNewDoc(XML_DEFAULT_VERSION);
+		root = xmlNewDocNode(data->doc, NULL, "samba", NULL);
+		cur = xmlDocSetRootElement(data->doc, root);
+		data->ns = xmlNewNs(root, XML_URL, "samba");
+		data->users = xmlNewChild(root, data->ns, "users", NULL);
+	}
+
+	user = xmlNewChild(data->users, data->ns, "user", NULL);
+	xmlNewProp(user, "sid",
+			   sid_to_string(sid_str, pdb_get_user_sid(u)));
+	if (pdb_get_init_flags(u, PDB_UID) != PDB_DEFAULT)
+		xmlNewProp(user, "uid", iota(pdb_get_uid(u)));
+
+	if (pdb_get_username(u) && strcmp(pdb_get_username(u), ""))
+		xmlNewProp(user, "name", pdb_get_username(u));
+
+	cur = xmlNewChild(user, data->ns, "group", NULL);
+	
+	xmlNewProp(cur, "sid",
+			   sid_to_string(sid_str, pdb_get_group_sid(u)));
+	if (pdb_get_init_flags(u, PDB_GID) != PDB_DEFAULT)
+		xmlNewProp(cur, "gid", iota(pdb_get_gid(u)));
+
+	if (pdb_get_init_flags(u, PDB_LOGONTIME) != PDB_DEFAULT)
+		xmlNewChild(user, data->ns, "login_time",
+					iota(pdb_get_logon_time(u)));
+
+	if (pdb_get_init_flags(u, PDB_LOGOFFTIME) != PDB_DEFAULT)
+		xmlNewChild(user, data->ns, "logoff_time",
+					iota(pdb_get_logoff_time(u)));
+
+	if (pdb_get_init_flags(u, PDB_KICKOFFTIME) != PDB_DEFAULT)
+		xmlNewChild(user, data->ns, "kickoff_time",
+					iota(pdb_get_kickoff_time(u)));
+
+	if (pdb_get_domain(u) && strcmp(pdb_get_domain(u), ""))
+		xmlNewChild(user, data->ns, "domain", pdb_get_domain(u));
+
+	if (pdb_get_nt_username(u) && strcmp(pdb_get_nt_username(u), ""))
+		xmlNewChild(user, data->ns, "nt_username", pdb_get_nt_username(u));
+
+	if (pdb_get_fullname(u) && strcmp(pdb_get_fullname(u), ""))
+		xmlNewChild(user, data->ns, "fullname", pdb_get_fullname(u));
+
+	if (pdb_get_homedir(u) && strcmp(pdb_get_homedir(u), ""))
+		xmlNewChild(user, data->ns, "homedir", pdb_get_homedir(u));
+
+	if (pdb_get_dir_drive(u) && strcmp(pdb_get_dir_drive(u), ""))
+		xmlNewChild(user, data->ns, "dir_drive", pdb_get_dir_drive(u));
+
+	if (pdb_get_logon_script(u) && strcmp(pdb_get_logon_script(u), ""))
+		xmlNewChild(user, data->ns, "logon_script",
+					pdb_get_logon_script(u));
+
+	if (pdb_get_profile_path(u) && strcmp(pdb_get_profile_path(u), ""))
+		xmlNewChild(user, data->ns, "profile_path",
+					pdb_get_profile_path(u));
+
+	if (pdb_get_acct_desc(u) && strcmp(pdb_get_acct_desc(u), ""))
+		xmlNewChild(user, data->ns, "acct_desc", pdb_get_acct_desc(u));
+
+	if (pdb_get_workstations(u) && strcmp(pdb_get_workstations(u), ""))
+		xmlNewChild(user, data->ns, "workstations",
+					pdb_get_workstations(u));
+
+	if (pdb_get_unknown_str(u) && strcmp(pdb_get_unknown_str(u), ""))
+		xmlNewChild(user, data->ns, "unknown_str", pdb_get_unknown_str(u));
+
+	if (pdb_get_munged_dial(u) && strcmp(pdb_get_munged_dial(u), ""))
+		xmlNewChild(user, data->ns, "munged_dial", pdb_get_munged_dial(u));
+
+
+	/* Password stuff */
+	pass = xmlNewChild(user, data->ns, "password", NULL);
+	if (pdb_get_pass_last_set_time(u))
+		xmlNewProp(pass, "last_set", iota(pdb_get_pass_last_set_time(u)));
+	if (pdb_get_init_flags(u, PDB_CANCHANGETIME) != PDB_DEFAULT)
+		xmlNewProp(pass, "can_change",
+				   iota(pdb_get_pass_can_change_time(u)));
+
+	if (pdb_get_init_flags(u, PDB_MUSTCHANGETIME) != PDB_DEFAULT)
+		xmlNewProp(pass, "must_change",
+				   iota(pdb_get_pass_must_change_time(u)));
+
+
+	if (pdb_get_lanman_passwd(u)) {
+		pdb_sethexpwd(temp, pdb_get_lanman_passwd(u),
+					  pdb_get_acct_ctrl(u));
+		cur = xmlNewChild(pass, data->ns, "crypt", temp);
+		xmlNewProp(cur, "type", "lanman");
+	}
+
+	if (pdb_get_nt_passwd(u)) {
+		pdb_sethexpwd(temp, pdb_get_nt_passwd(u), pdb_get_acct_ctrl(u));
+		cur = xmlNewChild(pass, data->ns, "crypt", temp);
+		xmlNewProp(cur, "type", "nt");
+	}
+
+	xmlNewChild(user, data->ns, "acct_ctrl", iota(pdb_get_acct_ctrl(u)));
+	xmlNewChild(user, data->ns, "unknown_3", iota(pdb_get_unknown_3(u)));
+
+	if (pdb_get_logon_divs(u))
+		xmlNewChild(user, data->ns, "logon_divs",
+					iota(pdb_get_logon_divs(u)));
+
+	if (pdb_get_hours_len(u))
+		xmlNewChild(user, data->ns, "hours_len",
+					iota(pdb_get_hours_len(u)));
+
+	xmlNewChild(user, data->ns, "unknown_5", iota(pdb_get_unknown_5(u)));
+	xmlNewChild(user, data->ns, "unknown_6", iota(pdb_get_unknown_6(u)));
+	xmlSaveFile(data->location, data->doc);
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS xmlsam_init(PDB_CONTEXT * pdb_context, PDB_METHODS ** pdb_method,
+		 const char *location)
+{
+	NTSTATUS nt_status;
+	pdb_xml *data;
+
+	xmlsam_debug_level = debug_add_class("xmlsam");
+	if (xmlsam_debug_level == -1) {
+		xmlsam_debug_level = DBGC_ALL;
+		DEBUG(0, ("xmlsam: Couldn't register custom debugging class!\n"));
+	}
+
+	if (!pdb_context) {
+		DEBUG(0, ("invalid pdb_methods specified\n"));
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
+	if (!NT_STATUS_IS_OK
+		(nt_status = make_pdb_methods(pdb_context->mem_ctx, pdb_method))) {
+		return nt_status;
+	}
+
+	(*pdb_method)->name = "xmlsam";
+
+	(*pdb_method)->setsampwent = xmlsam_setsampwent;
+	(*pdb_method)->endsampwent = xmlsam_endsampwent;
+	(*pdb_method)->getsampwent = xmlsam_getsampwent;
+	(*pdb_method)->add_sam_account = xmlsam_add_sam_account;
+	(*pdb_method)->getsampwnam = NULL;
+	(*pdb_method)->getsampwsid = NULL;
+	(*pdb_method)->update_sam_account = NULL;
+	(*pdb_method)->delete_sam_account = NULL;
+	(*pdb_method)->getgrsid = NULL;
+	(*pdb_method)->getgrgid = NULL;
+	(*pdb_method)->getgrnam = NULL;
+	(*pdb_method)->add_group_mapping_entry = NULL;
+	(*pdb_method)->update_group_mapping_entry = NULL;
+	(*pdb_method)->delete_group_mapping_entry = NULL;
+	(*pdb_method)->enum_group_mapping = NULL;
+
+	data = talloc(pdb_context->mem_ctx, sizeof(pdb_xml));
+	data->location =
+		(location ? talloc_strdup(pdb_context->mem_ctx, location) : "-");
+	data->pwent = NULL;
+	data->written = 0;
+	(*pdb_method)->private_data = data;
+
+	LIBXML_TEST_VERSION xmlKeepBlanksDefault(0);
+
+	return NT_STATUS_OK;
+}
+
+int init_module(void);
+
+int init_module() 
+{
+	if(smb_register_passdb("xml", xmlsam_init, PASSDB_INTERFACE_VERSION))
+		return 0;
+
+	return 1;
+}