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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd .
Copyright 2015 Lennart Poettering
systemd is free software ; you can redistribute it and / or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation ; either version 2.1 of the License , or
( at your option ) any later version .
systemd 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
Lesser General Public License for more details .
You should have received a copy of the GNU Lesser General Public License
along with systemd ; If not , see < http : //www.gnu.org/licenses/>.
* * */
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# include "btrfs-util.h"
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# include "import-util.h"
# include "path-util.h"
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# include "string-table.h"
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# include "string-util.h"
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# include "util.h"
int import_url_last_component ( const char * url , char * * ret ) {
const char * e , * p ;
char * s ;
e = strchrnul ( url , ' ? ' ) ;
while ( e > url & & e [ - 1 ] = = ' / ' )
e - - ;
p = e ;
while ( p > url & & p [ - 1 ] ! = ' / ' )
p - - ;
if ( e < = p )
return - EINVAL ;
s = strndup ( p , e - p ) ;
if ( ! s )
return - ENOMEM ;
* ret = s ;
return 0 ;
}
int import_url_change_last_component ( const char * url , const char * suffix , char * * ret ) {
const char * e ;
char * s ;
assert ( url ) ;
assert ( ret ) ;
e = strchrnul ( url , ' ? ' ) ;
while ( e > url & & e [ - 1 ] = = ' / ' )
e - - ;
while ( e > url & & e [ - 1 ] ! = ' / ' )
e - - ;
if ( e < = url )
return - EINVAL ;
s = new ( char , ( e - url ) + strlen ( suffix ) + 1 ) ;
if ( ! s )
return - ENOMEM ;
strcpy ( mempcpy ( s , url , e - url ) , suffix ) ;
* ret = s ;
return 0 ;
}
static const char * const import_verify_table [ _IMPORT_VERIFY_MAX ] = {
[ IMPORT_VERIFY_NO ] = " no " ,
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[ IMPORT_VERIFY_CHECKSUM ] = " checksum " ,
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[ IMPORT_VERIFY_SIGNATURE ] = " signature " ,
} ;
DEFINE_STRING_TABLE_LOOKUP ( import_verify , ImportVerify ) ;
int tar_strip_suffixes ( const char * name , char * * ret ) {
const char * e ;
char * s ;
e = endswith ( name , " .tar " ) ;
if ( ! e )
e = endswith ( name , " .tar.xz " ) ;
if ( ! e )
e = endswith ( name , " .tar.gz " ) ;
if ( ! e )
e = endswith ( name , " .tar.bz2 " ) ;
if ( ! e )
e = endswith ( name , " .tgz " ) ;
if ( ! e )
e = strchr ( name , 0 ) ;
if ( e < = name )
return - EINVAL ;
s = strndup ( name , e - name ) ;
if ( ! s )
return - ENOMEM ;
* ret = s ;
return 0 ;
}
int raw_strip_suffixes ( const char * p , char * * ret ) {
static const char suffixes [ ] =
" .xz \0 "
" .gz \0 "
" .bz2 \0 "
" .raw \0 "
" .qcow2 \0 "
" .img \0 "
" .bin \0 " ;
_cleanup_free_ char * q = NULL ;
q = strdup ( p ) ;
if ( ! q )
return - ENOMEM ;
for ( ; ; ) {
const char * sfx ;
bool changed = false ;
NULSTR_FOREACH ( sfx , suffixes ) {
char * e ;
e = endswith ( q , sfx ) ;
if ( e ) {
* e = 0 ;
changed = true ;
}
}
if ( ! changed )
break ;
}
* ret = q ;
q = NULL ;
return 0 ;
}
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bool dkr_digest_is_valid ( const char * digest ) {
/* 7 chars for prefix, 64 chars for the digest itself */
if ( strlen ( digest ) ! = 71 )
return false ;
return startswith ( digest , " sha256: " ) & & in_charset ( digest + 7 , " 0123456789abcdef " ) ;
}
bool dkr_ref_is_valid ( const char * ref ) {
const char * colon ;
if ( isempty ( ref ) )
return false ;
colon = strchr ( ref , ' : ' ) ;
if ( ! colon )
return filename_is_valid ( ref ) ;
return dkr_digest_is_valid ( ref ) ;
}
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bool dkr_name_is_valid ( const char * name ) {
const char * slash , * p ;
if ( isempty ( name ) )
return false ;
slash = strchr ( name , ' / ' ) ;
if ( ! slash )
return false ;
if ( ! filename_is_valid ( slash + 1 ) )
return false ;
p = strndupa ( name , slash - name ) ;
if ( ! filename_is_valid ( p ) )
return false ;
return true ;
}
bool dkr_id_is_valid ( const char * id ) {
if ( ! filename_is_valid ( id ) )
return false ;
if ( ! in_charset ( id , " 0123456789abcdef " ) )
return false ;
return true ;
}
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int import_assign_pool_quota_and_warn ( const char * path ) {
int r ;
r = btrfs_subvol_auto_qgroup ( " /var/lib/machines " , 0 , true ) ;
if ( r = = - ENOTTY ) {
log_debug_errno ( r , " Failed to set up default quota hierarchy for /var/lib/machines, as directory is not on btrfs or not a subvolume. Ignoring. " ) ;
return 0 ;
}
if ( r < 0 )
return log_error_errno ( r , " Failed to set up default quota hierarchy for /var/lib/machines: %m " ) ;
if ( r > 0 )
log_info ( " Set up default quota hierarchy for /var/lib/machines. " ) ;
r = btrfs_subvol_auto_qgroup ( path , 0 , true ) ;
if ( r = = - ENOTTY ) {
log_debug_errno ( r , " Failed to set up quota hierarchy for %s, as directory is not on btrfs or not a subvolume. Ignoring. " , path ) ;
return 0 ;
}
if ( r < 0 )
return log_error_errno ( r , " Failed to set up default quota hierarchy for %s: %m " , path ) ;
if ( r > 0 )
log_info ( " Set up default quota hierarchy for %s. " , path ) ;
return 0 ;
}