/* Unix SMB/CIFS implementation. Safe versions of getpw* calls Copyright (C) Andrew Bartlett 2002 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 3 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, see <http://www.gnu.org/licenses/>. */ #include "includes.h" struct passwd *tcopy_passwd(TALLOC_CTX *mem_ctx, const struct passwd *from) { struct passwd *ret = TALLOC_P(mem_ctx, struct passwd); if (!ret) { return NULL; } ret->pw_name = talloc_strdup(ret, from->pw_name); ret->pw_passwd = talloc_strdup(ret, from->pw_passwd); ret->pw_uid = from->pw_uid; ret->pw_gid = from->pw_gid; ret->pw_gecos = talloc_strdup(ret, from->pw_gecos); ret->pw_dir = talloc_strdup(ret, from->pw_dir); ret->pw_shell = talloc_strdup(ret, from->pw_shell); return ret; } void flush_pwnam_cache(void) { memcache_flush(NULL, GETPWNAM_CACHE); } struct passwd *getpwnam_alloc(TALLOC_CTX *mem_ctx, const char *name) { struct passwd *temp, *cached; temp = (struct passwd *)memcache_lookup_talloc( NULL, GETPWNAM_CACHE, data_blob_string_const(name)); if (temp != NULL) { return tcopy_passwd(mem_ctx, temp); } temp = sys_getpwnam(name); if (temp == NULL) { return NULL; } cached = tcopy_passwd(NULL, temp); if (cached == NULL) { /* * Just don't add this into the cache, ignore the failure */ return temp; } memcache_add_talloc(NULL, GETPWNAM_CACHE, data_blob_string_const(name), cached); return tcopy_passwd(mem_ctx, temp); } struct passwd *getpwuid_alloc(TALLOC_CTX *mem_ctx, uid_t uid) { struct passwd *temp; temp = sys_getpwuid(uid); if (!temp) { #if 0 if (errno == ENOMEM) { /* what now? */ } #endif return NULL; } return tcopy_passwd(mem_ctx, temp); }