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Fix possible NULL argument to printf

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This commit is contained in:
Werner Koch 2008-08-19 19:36:04 +00:00
parent 64a47d54c4
commit 6ae5af5d7a
2 changed files with 27 additions and 13 deletions
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6
util/ChangeLog
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@ -1,3 +1,9 @@
2008-08-19 Werner Koch <wk@g10code.com>
* iobuf.c: Avoid passing a NULL (iobuf_t)->desc to the log
function. Should in general never be NULL, but well. Reported by
M. Heneka.
2008-03-06 David Shaw <dshaw@jabberwocky.com>
* argparse.c (default_strusage): Update copyright date.

34
util/iobuf.c
View File

@ -1,6 +1,6 @@
/* iobuf.c - file handling
* Copyright (C) 1998, 1999, 2000, 2001, 2003,
* 2004 Free Software Foundation, Inc.
* 2004, 2008 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
@ -883,7 +883,7 @@ print_chain( IOBUF a )
(byte*)&desc, &dummy_len );
log_debug("iobuf chain: %d.%d `%s' filter_eof=%d start=%d len=%d\n",
a->no, a->subno, desc, a->filter_eof,
a->no, a->subno, desc?desc:"?", a->filter_eof,
(int)a->d.start, (int)a->d.len );
}
}
@ -938,7 +938,8 @@ iobuf_close ( IOBUF a )
log_error("iobuf_flush failed on close: %s\n", g10_errstr(rc));
if( DBG_IOBUF )
log_debug("iobuf-%d.%d: close `%s'\n", a->no, a->subno, a->desc );
log_debug("iobuf-%d.%d: close `%s'\n", a->no, a->subno,
a->desc?a->desc:"?");
if( a->filter && (rc = a->filter(a->filter_ov, IOBUFCTRL_FREE,
a->chain, NULL, &dummy_len)) )
log_error("IOBUFCTRL_FREE failed on close: %s\n", g10_errstr(rc) );
@ -1199,7 +1200,8 @@ iobuf_create( const char *fname )
file_filter( fcx, IOBUFCTRL_DESC, NULL, (byte*)&a->desc, &len );
file_filter( fcx, IOBUFCTRL_INIT, NULL, NULL, &len );
if( DBG_IOBUF )
log_debug("iobuf-%d.%d: create `%s'\n", a->no, a->subno, a->desc );
log_debug("iobuf-%d.%d: create `%s'\n", a->no, a->subno,
a->desc?a->desc:"?" );
return a;
}
@ -1232,7 +1234,8 @@ iobuf_append( const char *fname )
file_filter( fcx, IOBUFCTRL_DESC, NULL, (byte*)&a->desc, &len );
file_filter( fcx, IOBUFCTRL_INIT, NULL, NULL, &len );
if( DBG_IOBUF )
log_debug("iobuf-%d.%d: append `%s'\n", a->no, a->subno, a->desc );
log_debug("iobuf-%d.%d: append `%s'\n", a->no, a->subno,
a->desc?a->desc:"?" );
return a;
}
@ -1260,7 +1263,8 @@ iobuf_openrw( const char *fname )
file_filter( fcx, IOBUFCTRL_DESC, NULL, (byte*)&a->desc, &len );
file_filter( fcx, IOBUFCTRL_INIT, NULL, NULL, &len );
if( DBG_IOBUF )
log_debug("iobuf-%d.%d: openrw `%s'\n", a->no, a->subno, a->desc );
log_debug("iobuf-%d.%d: openrw `%s'\n", a->no, a->subno,
a->desc?a->desc:"?");
return a;
}
@ -1272,7 +1276,8 @@ iobuf_ioctl ( IOBUF a, int cmd, int intval, void *ptrval )
if ( cmd == 1 ) { /* keep system filepointer/descriptor open */
if( DBG_IOBUF )
log_debug("iobuf-%d.%d: ioctl `%s' keep=%d\n",
a? a->no:-1, a?a->subno:-1, a?a->desc:"?", intval );
a? a->no:-1, a?a->subno:-1,
a&&a->desc?a->desc:"?", intval );
for( ; a; a = a->chain )
if( !a->chain && a->filter == file_filter ) {
file_filter_ctx_t *b = a->filter_ov;
@ -1301,7 +1306,8 @@ iobuf_ioctl ( IOBUF a, int cmd, int intval, void *ptrval )
else if ( cmd == 3 ) { /* disallow/allow caching */
if( DBG_IOBUF )
log_debug("iobuf-%d.%d: ioctl `%s' no_cache=%d\n",
a? a->no:-1, a?a->subno:-1, a?a->desc:"?", intval );
a? a->no:-1, a?a->subno:-1,
a&&a->desc?a->desc:"?", intval );
for( ; a; a = a->chain )
if( !a->chain && a->filter == file_filter ) {
file_filter_ctx_t *b = a->filter_ov;
@ -1393,7 +1399,8 @@ iobuf_push_filter2( IOBUF a,
f( ov, IOBUFCTRL_DESC, NULL, (byte*)&a->desc, &dummy_len );
if( DBG_IOBUF ) {
log_debug("iobuf-%d.%d: push `%s'\n", a->no, a->subno, a->desc );
log_debug("iobuf-%d.%d: push `%s'\n", a->no, a->subno,
a->desc?a->desc:"?" );
print_chain( a );
}
@ -1419,7 +1426,8 @@ pop_filter( IOBUF a, int (*f)(void *opaque, int control,
BUG();
if( DBG_IOBUF )
log_debug("iobuf-%d.%d: pop `%s'\n", a->no, a->subno, a->desc );
log_debug("iobuf-%d.%d: pop `%s'\n", a->no, a->subno,
a->desc?a->desc:"?" );
if( !a->filter ) { /* this is simple */
b = a->chain;
assert(b);
@ -1497,7 +1505,7 @@ underflow(IOBUF a)
IOBUF b = a->chain;
if( DBG_IOBUF )
log_debug("iobuf-%d.%d: pop `%s' in underflow\n",
a->no, a->subno, a->desc );
a->no, a->subno, a->desc?a->desc:"?" );
xfree(a->d.buf);
xfree(a->real_fname);
memcpy(a, b, sizeof *a);
@ -1562,8 +1570,8 @@ underflow(IOBUF a)
if( !len && a->chain ) {
IOBUF b = a->chain;
if( DBG_IOBUF )
log_debug("iobuf-%d.%d: pop `%s' in underflow (!len)\n",
a->no, a->subno, a->desc );
log_debug("iobuf-%d.%d: pop in underflow (!len)\n",
a->no, a->subno);
xfree(a->d.buf);
xfree(a->real_fname);
memcpy(a,b, sizeof *a);