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g10: Avoid memory leaks

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* g10/call-agent.c (card_keyinfo_cb): free keyinfo.  Restructure to
avoid backward gotos.
* g10/keyedit.c (menu_set_keyserver_url): properly enclose the block
* g10/keygen.c (gen_card_key): free pk and pkt

--

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
GnuPG-bug-id: 5393

Additional changes:
- Restructure to avoid backward gotos.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Jakub Jelen 2021-04-12 20:05:48 +02:00 • committed by Werner Koch
parent 25aa353bf8
commit fa0771f609
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
3 changed files with 30 additions and 18 deletions
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28
g10/call-agent.c
View file

@ -1709,6 +1709,7 @@ card_keyinfo_cb (void *opaque, const char *line)
struct card_keyinfo_parm_s *parm = opaque;
const char *keyword = line;
int keywordlen;
keypair_info_t keyinfo = NULL;
for (keywordlen=0; *line && !spacep (line); line++, keywordlen++)
;
@ -1719,7 +1720,6 @@ card_keyinfo_cb (void *opaque, const char *line)
{
const char *s;
int n;
keypair_info_t keyinfo;
keypair_info_t *l_p = &parm->list;
while ((*l_p))
@ -1727,23 +1727,13 @@ card_keyinfo_cb (void *opaque, const char *line)
keyinfo = xtrycalloc (1, sizeof *keyinfo);
if (!keyinfo)
{
alloc_error:
if (!parm->error)
parm->error = gpg_error_from_syserror ();
return 0;
}
goto alloc_error;
for (n=0,s=line; hexdigitp (s); s++, n++)
;
if (n != 40)
{
parm_error:
if (!parm->error)
parm->error = gpg_error (GPG_ERR_ASS_PARAMETER);
return 0;
}
goto parm_error;
memcpy (keyinfo->keygrip, line, 40);
keyinfo->keygrip[40] = 0;
@ -1797,6 +1787,18 @@ card_keyinfo_cb (void *opaque, const char *line)
}
return err;
alloc_error:
xfree (keyinfo);
if (!parm->error)
parm->error = gpg_error_from_syserror ();
return 0;
parm_error:
xfree (keyinfo);
if (!parm->error)
parm->error = gpg_error (GPG_ERR_ASS_PARAMETER);
return 0;
}