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gpg: fix --enarmor with zero length source file 

* common/iobuf.c (filter_flush): Remove "src_len == 0" check.
* g10/compress-bz2.c (do_compress): Exit early if flush not
forced and input length is zero.
* g10/compress.c (do_compress): Likewise.
--

Remove "(src_len == 0)" check in filter_flush which was
introduced to fix compress failure caused by zero length
flush from iobuf_close. However this check broke enarmoring
file with length of zero. Patch instead fixes zero length
flush problem in compress filters.

GnuPG-bug-id: T5828
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
This commit is contained in:
Jussi Kivilinna 2022-03-07 20:54:34 +02:00
parent b96eb6f08d
commit 49c6e58394
3 changed files with 6 additions and 8 deletions
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8
common/iobuf.c
View File

@ -2090,14 +2090,6 @@ filter_flush (iobuf_t a)
external_used = 0;
}
if (src_len == 0)
{
if (DBG_IOBUF)
log_debug ("filter_flush, nothing to flush%s\n",
external_used ? " (external buffer)" : "");
return 0;
}
len = src_len;
rc = a->filter (a->filter_ov, IOBUFCTRL_FLUSH, a->chain, src_buf, &len);
if (!rc && len != src_len)

3
g10/compress-bz2.c
View File

@ -66,6 +66,9 @@ do_compress(compress_filter_context_t *zfx, bz_stream *bzs, int flush, IOBUF a)
int zrc;
unsigned n;
if (flush == BZ_RUN && bzs->avail_in == 0)
return 0;
do
{
bzs->next_out = zfx->outbuf;

3
g10/compress.c
View File

@ -100,6 +100,9 @@ do_compress( compress_filter_context_t *zfx, z_stream *zs, int flush, IOBUF a )
int zrc;
unsigned n;
if (flush == Z_NO_FLUSH && zs->avail_in == 0)
return 0;
do {
zs->next_out = BYTEF_CAST (zfx->outbuf);
zs->avail_out = zfx->outbufsize;