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Unix SMB/CIFS implementation.
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Samba utility functions
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Copyright (C) Simo Sorce 2001
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Copyright (C) Jeremy Allison 2001
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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/****************************************************************
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Returns a single linked list of group entries.
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Use grent_free() to free it after use.
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****************************************************************/
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struct sys_grent * getgrent_list(void)
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struct sys_grent *glist;
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struct sys_grent *gent;
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gent = SMB_MALLOC_P(struct sys_grent);
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DEBUG (0, ("Out of memory in getgrent_list!\n"));
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memset(gent, '\0', sizeof(struct sys_grent));
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if ((gent->gr_name = SMB_STRDUP(grp->gr_name)) == NULL)
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if ((gent->gr_passwd = SMB_STRDUP(grp->gr_passwd)) == NULL)
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gent->gr_gid = grp->gr_gid;
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/* number of strings in gr_mem */
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for (num = 0; grp->gr_mem[num]; num++)
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/* alloc space for gr_mem string pointers */
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if ((gent->gr_mem = SMB_MALLOC_ARRAY(char *, num+1)) == NULL)
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memset(gent->gr_mem, '\0', (num+1) * sizeof(char *));
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for (i=0; i < num; i++) {
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if ((gent->gr_mem[i] = SMB_STRDUP(grp->gr_mem[i])) == NULL)
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gent->gr_mem[num] = NULL;
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gent->next = SMB_MALLOC_P(struct sys_grent);
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if (gent->next == NULL)
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memset(gent, '\0', sizeof(struct sys_grent));
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DEBUG(0, ("Out of memory in getgrent_list!\n"));
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/****************************************************************
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Free the single linked list of group entries made by
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****************************************************************/
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void grent_free (struct sys_grent *glist)
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struct sys_grent *prev;
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SAFE_FREE(glist->gr_name);
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SAFE_FREE(glist->gr_passwd);
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for (i = 0; glist->gr_mem[i]; i++)
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SAFE_FREE(glist->gr_mem[i]);
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SAFE_FREE(glist->gr_mem);
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/****************************************************************
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Returns a single linked list of passwd entries.
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Use pwent_free() to free it after use.
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****************************************************************/
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struct sys_pwent * getpwent_list(void)
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struct sys_pwent *plist;
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struct sys_pwent *pent;
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pent = SMB_MALLOC_P(struct sys_pwent);
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DEBUG (0, ("Out of memory in getpwent_list!\n"));
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while (pwd != NULL) {
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memset(pent, '\0', sizeof(struct sys_pwent));
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if ((pent->pw_name = SMB_STRDUP(pwd->pw_name)) == NULL)
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if (pwd->pw_passwd) {
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if ((pent->pw_passwd = SMB_STRDUP(pwd->pw_passwd)) == NULL)
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pent->pw_uid = pwd->pw_uid;
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pent->pw_gid = pwd->pw_gid;
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if ((pent->pw_gecos = SMB_STRDUP(pwd->pw_gecos)) == NULL)
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if ((pent->pw_dir = SMB_STRDUP(pwd->pw_dir)) == NULL)
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if ((pent->pw_shell = SMB_STRDUP(pwd->pw_shell)) == NULL)
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pent->next = SMB_MALLOC_P(struct sys_pwent);
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if (pent->next == NULL)
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DEBUG(0, ("Out of memory in getpwent_list!\n"));
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/****************************************************************
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Free the single linked list of passwd entries made by
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****************************************************************/
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void pwent_free (struct sys_pwent *plist)
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struct sys_pwent *prev;
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SAFE_FREE(plist->pw_name);
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SAFE_FREE(plist->pw_passwd);
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SAFE_FREE(plist->pw_gecos);
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SAFE_FREE(plist->pw_dir);
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SAFE_FREE(plist->pw_shell);
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/****************************************************************
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Add the individual group users onto the list.
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****************************************************************/
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static struct sys_userlist *add_members_to_userlist(struct sys_userlist *list_head, const struct group *grp)
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/* Count the number of users. */
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for (num_users = 0; grp->gr_mem[num_users]; num_users++)
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for (i = 0; i < num_users; i++) {
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struct sys_userlist *entry = SMB_MALLOC_P(struct sys_userlist);
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free_userlist(list_head);
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entry->unix_name = (char *)SMB_STRDUP(grp->gr_mem[i]);
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if (entry->unix_name == NULL) {
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free_userlist(list_head);
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DLIST_ADD(list_head, entry);
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/*****************************************************************
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Splits passed user or group name to domain and user/group name parts
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Returns True if name was splitted and False otherwise.
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*****************************************************************/
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static BOOL split_domain_and_name(const char *name, char *domain,
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char *p = strchr(name,*lp_winbind_separator());
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/* Parse a string of the form DOMAIN/user into a domain and a user */
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DEBUG(10,("split_domain_and_name: checking whether name |%s| local or "
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fstrcpy(username, p+1);
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fstrcpy(domain, name);
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domain[PTR_DIFF(p, name)] = 0;
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} else if (lp_winbind_use_default_domain()) {
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fstrcpy(username, name);
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fstrcpy(domain, lp_workgroup());
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DEBUG(10,("split_domain_and_name: all is fine, domain is |%s| and "
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"name is |%s|\n", domain, username));
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/****************************************************************
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Get the list of UNIX users in a group.
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We have to enumerate the /etc/group file as some UNIX getgrnam()
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calls won't do that for us (notably Tru64 UNIX).
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****************************************************************/
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struct sys_userlist *get_users_in_group(const char *gname)
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struct sys_userlist *list_head = NULL;
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enum SID_NAME_USE name_type;
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/* No point using winbind if we can't split it in the
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if (split_domain_and_name(gname, domain, groupname)) {
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* If we're doing this via winbindd, don't do the
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* entire group list enumeration as we know this is
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* pointless (and slow).
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if (winbind_lookup_name(domain, groupname, &sid, &name_type)
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&& name_type == SID_NAME_DOM_GRP) {
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if ((gptr = (struct group *)getgrnam(gname)) == NULL)
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return add_members_to_userlist(list_head, gptr);
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#if !defined(BROKEN_GETGRNAM)
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if ((gptr = (struct group *)getgrnam(gname)) == NULL)
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return add_members_to_userlist(list_head, gptr);
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/* BROKEN_GETGRNAM - True64 */
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while((gptr = getgrent()) != NULL) {
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if (strequal(gname, gptr->gr_name)) {
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list_head = add_members_to_userlist(list_head, gptr);
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if (list_head == NULL)
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/****************************************************************
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Free list allocated above.
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****************************************************************/
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void free_userlist(struct sys_userlist *list_head)
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struct sys_userlist *old_head = list_head;
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DLIST_REMOVE(list_head, list_head);
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SAFE_FREE(old_head->unix_name);