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core, w32: Add hack to translate diag logger-fd

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* src/assuan-support.c (my_spawn): Add hack to
mark the logger fd for w32spawn translation.

--
The w32 spawn code needs to modify argv with
an updated fd that matches the real id
in the spawned process.

It uses spawn_fd_item_s.arg_loc for that.
We hack it here so that the arg_loc is set
for gpgsm's logger-fd without changing
the assuan API.

GnuPG-Bug-Id: T4426
This commit is contained in:
Andre Heinecke 2019-03-25 14:56:37 +01:00
parent 47369569e2
commit 129def87b2
No known key found for this signature in database
GPG Key ID: 2978E9D40CBABA5C
1 changed files with 53 additions and 5 deletions
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50
src/assuan-support.c
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@ -158,7 +158,7 @@ my_spawn (assuan_context_t ctx, pid_t *r_pid, const char *name,
void (*atfork) (void *opaque, int reserved),
void *atforkvalue, unsigned int flags)
{
int err;
int err = 0;
struct spawn_fd_item_s *fd_items;
int i;
@ -209,9 +209,57 @@ my_spawn (assuan_context_t ctx, pid_t *r_pid, const char *name,
fd_items[i].fd = -1;
fd_items[i].dup_to = -1;
#ifdef HAVE_W32_SYSTEM
/* Fix up a potential logger fd so that on windows the fd
* translation can work through gpgme-w32spawn.
*
* We do this here as a hack because we would
* otherwise have to change assuan_api and the current
* plan in 2019 is to change away from this to gpgrt
* based IPC. */
if (argv)
{
int loc = 0;
while (argv[loc])
{
if (!strcmp ("--logger-fd", argv[loc]))
{
long logger_fd = -1;
char *tail;
int k = 0;
loc++;
if (!argv[loc])
{
err = GPG_ERR_INV_ARG;
break;
}
logger_fd = strtoul (argv[loc], &tail, 10);
if (tail == argv[loc] || logger_fd <= 0)
{
err = GPG_ERR_INV_ARG;
break;
}
while (fd_items[k++].fd != -1)
{
if (fd_items[k].fd == logger_fd)
{
fd_items[k].arg_loc = loc;
break;
}
}
break;
}
loc++;
}
}
#endif
if (!err)
{
err = _gpgme_io_spawn (name, (char*const*)argv,
(IOSPAWN_FLAG_NOCLOSE | IOSPAWN_FLAG_DETACHED),
fd_items, atfork, atforkvalue, r_pid);
}
if (!err)
{
i = 0;