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/*
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_null(name));
if (temp != NULL) {
return tcopy_passwd(mem_ctx, temp);
}
temp = sys_getpwnam(name);
if (temp == NULL) {
return NULL;
}
cached = tcopy_passwd(talloc_autofree_context(), 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_null(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);
}
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