Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-/* this module is retired, it is moved to lib/domain_namemap.c */
+#ifdef USING_GROUPNAME_MAP
+
+#include "includes.h"
+extern int DEBUGLEVEL;
+extern DOM_SID global_sam_sid;
+
+
+/**************************************************************************
+ Groupname map functionality. The code loads a groupname map file and
+ (currently) loads it into a linked list. This is slow and memory
+ hungry, but can be changed into a more efficient storage format
+ if the demands on it become excessive.
+***************************************************************************/
+
+typedef struct groupname_map {
+ ubi_slNode next;
+
+ char *windows_name;
+ DOM_SID windows_sid;
+ char *unix_name;
+ gid_t unix_gid;
+} groupname_map_entry;
+
+static ubi_slList groupname_map_list;
+
+/**************************************************************************
+ Delete all the entries in the groupname map list.
+***************************************************************************/
+
+static void delete_groupname_map_list(void)
+{
+ groupname_map_entry *gmep;
+
+ while((gmep = (groupname_map_entry *)ubi_slRemHead( &groupname_map_list )) != NULL) {
+ if(gmep->windows_name)
+ free(gmep->windows_name);
+ if(gmep->unix_name)
+ free(gmep->unix_name);
+ free((char *)gmep);
+ }
+}
+
+/**************************************************************************
+ Load a groupname map file. Sets last accessed timestamp.
+***************************************************************************/
+
+void load_groupname_map(void)
+{
+ static time_t groupmap_file_last_modified = (time_t)0;
+ static BOOL initialized = False;
+ char *groupname_map_file = lp_groupname_map();
+ SMB_STRUCT_STAT st;
+ FILE *fp;
+ char *s;
+ pstring buf;
+ groupname_map_entry *new_ep;
+
+ if(!initialized) {
+ ubi_slInitList( &groupname_map_list );
+ initialized = True;
+ }
+
+ if (!*groupname_map_file)
+ return;
+
+ if(sys_stat(groupname_map_file, &st) != 0) {
+ DEBUG(0, ("load_groupname_map: Unable to stat file %s. Error was %s\n",
+ groupname_map_file, strerror(errno) ));
+ return;
+ }
+
+ /*
+ * Check if file has changed.
+ */
+ if( st.st_mtime <= groupmap_file_last_modified)
+ return;
+
+ groupmap_file_last_modified = st.st_mtime;
+
+ /*
+ * Load the file.
+ */
+
+ fp = sys_fopen(groupname_map_file,"r");
+ if (!fp) {
+ DEBUG(0,("load_groupname_map: can't open groupname map %s. Error was %s\n",
+ groupname_map_file, strerror(errno)));
+ return;
+ }
+
+ /*
+ * Throw away any previous list.
+ */
+ delete_groupname_map_list();
+
+ DEBUG(4,("load_groupname_map: Scanning groupname map %s\n",groupname_map_file));
+
+ while((s=fgets_slash(buf,sizeof(buf),fp))!=NULL) {
+ pstring unixname;
+ pstring windows_name;
+ struct group *gptr;
+ DOM_SID tmp_sid;
+
+ DEBUG(10,("load_groupname_map: Read line |%s|\n", s));
+
+ if (!*s || strchr("#;",*s))
+ continue;
+
+ if(!next_token(&s,unixname, "\t\n\r=", sizeof(unixname)))
+ continue;
+
+ if(!next_token(&s,windows_name, "\t\n\r=", sizeof(windows_name)))
+ continue;
+
+ trim_string(unixname, " ", " ");
+ trim_string(windows_name, " ", " ");
+
+ if (!*windows_name)
+ continue;
+
+ if(!*unixname)
+ continue;
+
+ DEBUG(5,("load_groupname_map: unixname = %s, windowsname = %s.\n",
+ unixname, windows_name));
+
+ /*
+ * Attempt to get the unix gid_t for this name.
+ */
+
+ if((gptr = (struct group *)getgrnam(unixname)) == NULL) {
+ DEBUG(0,("load_groupname_map: getgrnam for group %s failed.\
+Error was %s.\n", unixname, strerror(errno) ));
+ continue;
+ }
+
+ /*
+ * Now map to an NT SID.
+ */
+
+ if(!lookup_wellknown_sid_from_name(windows_name, &tmp_sid)) {
+ /*
+ * It's not a well known name, convert the UNIX gid_t
+ * to a rid within this domain SID.
+ */
+ tmp_sid = global_sam_sid;
+ tmp_sid.sub_auths[tmp_sid.num_auths++] =
+ pdb_gid_to_group_rid((gid_t)gptr->gr_gid);
+ }
+
+ /*
+ * Create the list entry and add it onto the list.
+ */
+
+ if((new_ep = (groupname_map_entry *)malloc( sizeof(groupname_map_entry) ))== NULL) {
+ DEBUG(0,("load_groupname_map: malloc fail for groupname_map_entry.\n"));
+ fclose(fp);
+ return;
+ }
+
+ new_ep->unix_gid = gptr->gr_gid;
+ new_ep->windows_sid = tmp_sid;
+ new_ep->windows_name = strdup( windows_name );
+ new_ep->unix_name = strdup( unixname );
+
+ if(new_ep->windows_name == NULL || new_ep->unix_name == NULL) {
+ DEBUG(0,("load_groupname_map: malloc fail for names in groupname_map_entry.\n"));
+ fclose(fp);
+ if(new_ep->windows_name != NULL)
+ free(new_ep->windows_name);
+ if(new_ep->unix_name != NULL)
+ free(new_ep->unix_name);
+ free((char *)new_ep);
+ return;
+ }
+ memset((char *)&new_ep->next, '\0', sizeof(new_ep->next) );
+
+ ubi_slAddHead( &groupname_map_list, (ubi_slNode *)new_ep);
+ }
+
+ DEBUG(10,("load_groupname_map: Added %ld entries to groupname map.\n",
+ ubi_slCount(&groupname_map_list)));
+
+ fclose(fp);
+}
+
+/***********************************************************
+ Lookup a SID entry by gid_t.
+************************************************************/
+
+void map_gid_to_sid( gid_t gid, DOM_SID *psid)
+{
+ groupname_map_entry *gmep;
+
+ /*
+ * Initialize and load if not already loaded.
+ */
+ load_groupname_map();
+
+ for( gmep = (groupname_map_entry *)ubi_slFirst( &groupname_map_list);
+ gmep; gmep = (groupname_map_entry *)ubi_slNext( gmep )) {
+
+ if( gmep->unix_gid == gid) {
+ *psid = gmep->windows_sid;
+ DEBUG(7,("map_gid_to_sid: Mapping unix group %s to windows group %s.\n",
+ gmep->unix_name, gmep->windows_name ));
+ return;
+ }
+ }
+
+ /*
+ * If there's no map, convert the UNIX gid_t
+ * to a rid within this domain SID.
+ */
+ *psid = global_sam_sid;
+ psid->sub_auths[psid->num_auths++] = pdb_gid_to_group_rid(gid);
+
+ return;
+}
+#else /* USING_GROUPNAME_MAP */
+ void load_groupname_map(void) {;}
+#endif /* USING_GROUPNAME_MAP */
git.samba.org / kai / samba-autobuild / .git / blobdiff