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/*
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Unix SMB / CIFS implementation .
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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
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the Free Software Foundation ; either version 3 of the License , or
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( 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
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along with this program . If not , see < http : //www.gnu.org/licenses/>.
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*/
# include "includes.h"
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struct passwd * tcopy_passwd ( TALLOC_CTX * mem_ctx , const struct passwd * from )
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{
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struct passwd * ret = TALLOC_P ( mem_ctx , struct passwd ) ;
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if ( ! ret ) {
return NULL ;
}
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ret - > pw_name = talloc_strdup ( ret , from - > pw_name ) ;
ret - > pw_passwd = talloc_strdup ( ret , from - > pw_passwd ) ;
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ret - > pw_uid = from - > pw_uid ;
ret - > pw_gid = from - > pw_gid ;
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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 ) ;
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return ret ;
}
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void flush_pwnam_cache ( void )
{
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memcache_flush ( NULL , GETPWNAM_CACHE ) ;
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}
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struct passwd * getpwnam_alloc ( TALLOC_CTX * mem_ctx , const char * name )
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{
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struct passwd * pw , * for_cache ;
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pw = ( struct passwd * ) memcache_lookup_talloc (
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NULL , GETPWNAM_CACHE , data_blob_string_const_null ( name ) ) ;
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if ( pw ! = NULL ) {
return tcopy_passwd ( mem_ctx , pw ) ;
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}
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pw = sys_getpwnam ( name ) ;
if ( pw = = NULL ) {
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return NULL ;
}
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for_cache = tcopy_passwd ( talloc_autofree_context ( ) , pw ) ;
if ( for_cache = = NULL ) {
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return NULL ;
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}
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memcache_add_talloc ( NULL , GETPWNAM_CACHE ,
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data_blob_string_const_null ( name ) , & for_cache ) ;
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return tcopy_passwd ( mem_ctx , pw ) ;
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}
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struct passwd * getpwuid_alloc ( TALLOC_CTX * mem_ctx , uid_t uid )
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{
struct passwd * temp ;
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temp = sys_getpwuid ( uid ) ;
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if ( ! temp ) {
#if 0
if ( errno = = ENOMEM ) {
/* what now? */
}
# endif
return NULL ;
}
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return tcopy_passwd ( mem_ctx , temp ) ;
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}