/* This is the default inquiry callback. We use it to handle the
Pinentry notifications. */
static gpgme_error_t
default_inq_cb (engine_g13_t g13, const char *keyword, const char *args)
{
gpg_error_t err;
if (!strcmp (keyword, "PINENTRY_LAUNCHED"))
{
_gpgme_allow_set_foreground_window ((pid_t)strtoul (args, NULL, 10));
}
if (g13->user.inq_cb)
{
gpgme_data_t data = NULL;
err = g13->user.inq_cb (g13->user.inq_cb_value,
keyword, args, &data);
if (!err && data)
{
/* FIXME: Returning data is not yet implemented. However we
need to allow the caller to cleanup his data object.
Thus we run the callback in finish mode immediately. */
err = g13->user.inq_cb (g13->user.inq_cb_value,
NULL, NULL, &data);
}
}
else
err = 0;
return err;
}
/* This is the default inquiry callback. We use it to handle the
Pinentry notifications. */
static gpgme_error_t
default_inq_cb (engine_gpgsm_t gpgsm, const char *line)
{
if (!strncmp (line, "PINENTRY_LAUNCHED", 17) && (line[17]==' '||!line[17]))
{
_gpgme_allow_set_foreground_window ((pid_t)strtoul (line+17, NULL, 10));
}
return 0;
}
int
_gpgme_io_spawn (const char *path, char * const argv[], unsigned int flags,
struct spawn_fd_item_s *fd_list,
void (*atfork) (void *opaque, int reserved),
void *atforkvalue, pid_t *r_pid)
{
SECURITY_ATTRIBUTES sec_attr;
PROCESS_INFORMATION pi =
{
NULL, /* returns process handle */
0, /* returns primary thread handle */
0, /* returns pid */
0 /* returns tid */
};
STARTUPINFO si;
int cr_flags = (CREATE_DEFAULT_ERROR_MODE
| GetPriorityClass (GetCurrentProcess ()));
int i;
char **args;
char *arg_string;
/* FIXME. */
int debug_me = 0;
int tmp_fd;
char *tmp_name;
TRACE_BEG1 (DEBUG_SYSIO, "_gpgme_io_spawn", path,
"path=%s", path);
i = 0;
while (argv[i])
{
TRACE_LOG2 ("argv[%2i] = %s", i, argv[i]);
i++;
}
/* We do not inherit any handles by default, and just insert those
handles we want the child to have afterwards. But some handle
values occur on the command line, and we need to move
stdin/out/err to the right location. So we use a wrapper program
which gets the information from a temporary file. */
if (_gpgme_mkstemp (&tmp_fd, &tmp_name) < 0)
{
TRACE_LOG1 ("_gpgme_mkstemp failed: %s", strerror (errno));
return TRACE_SYSRES (-1);
}
TRACE_LOG1 ("tmp_name = %s", tmp_name);
args = calloc (2 + i + 1, sizeof (*args));
args[0] = (char *) _gpgme_get_w32spawn_path ();
args[1] = tmp_name;
args[2] = path;
memcpy (&args[3], &argv[1], i * sizeof (*args));
memset (&sec_attr, 0, sizeof sec_attr);
sec_attr.nLength = sizeof sec_attr;
sec_attr.bInheritHandle = FALSE;
arg_string = build_commandline (args);
free (args);
if (!arg_string)
{
close (tmp_fd);
DeleteFile (tmp_name);
return TRACE_SYSRES (-1);
}
memset (&si, 0, sizeof si);
si.cb = sizeof (si);
si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
si.wShowWindow = debug_me ? SW_SHOW : SW_HIDE;
si.hStdInput = INVALID_HANDLE_VALUE;
si.hStdOutput = INVALID_HANDLE_VALUE;
si.hStdError = INVALID_HANDLE_VALUE;
cr_flags |= CREATE_SUSPENDED;
cr_flags |= DETACHED_PROCESS;
if (!CreateProcessA (_gpgme_get_w32spawn_path (),
arg_string,
&sec_attr, /* process security attributes */
&sec_attr, /* thread security attributes */
FALSE, /* inherit handles */
cr_flags, /* creation flags */
NULL, /* environment */
NULL, /* use current drive/directory */
&si, /* startup information */
&pi)) /* returns process information */
{
TRACE_LOG1 ("CreateProcess failed: ec=%d", (int) GetLastError ());
free (arg_string);
close (tmp_fd);
DeleteFile (tmp_name);
/* FIXME: Should translate the error code. */
errno = EIO;
return TRACE_SYSRES (-1);
}
free (arg_string);
if (flags & IOSPAWN_FLAG_ALLOW_SET_FG)
_gpgme_allow_set_foreground_window ((pid_t)pi.dwProcessId);
/* Insert the inherited handles. */
for (i = 0; fd_list[i].fd != -1; i++)
{
HANDLE hd;
/* Make it inheritable for the wrapper process. */
if (!DuplicateHandle (GetCurrentProcess(),
_get_osfhandle (giochannel_table[fd_list[i].fd].fd),
pi.hProcess, &hd, 0, TRUE, DUPLICATE_SAME_ACCESS))
{
TRACE_LOG1 ("DuplicateHandle failed: ec=%d", (int) GetLastError ());
TerminateProcess (pi.hProcess, 0);
/* Just in case TerminateProcess didn't work, let the
process fail on its own. */
ResumeThread (pi.hThread);
CloseHandle (pi.hThread);
CloseHandle (pi.hProcess);
close (tmp_fd);
DeleteFile (tmp_name);
/* FIXME: Should translate the error code. */
errno = EIO;
return TRACE_SYSRES (-1);
}
/* Return the child name of this handle. */
fd_list[i].peer_name = (int) hd;
}
/* Write the handle translation information to the temporary
file. */
{
/* Hold roughly MAX_TRANS quadruplets of 64 bit numbers in hex
notation: "0xFEDCBA9876543210" with an extra white space after
every quadruplet. 10*(19*4 + 1) - 1 = 769. This plans ahead
for a time when a HANDLE is 64 bit. */
#define BUFFER_MAX 800
char line[BUFFER_MAX + 1];
int res;
int written;
size_t len;
if ((flags & IOSPAWN_FLAG_ALLOW_SET_FG))
strcpy (line, "~1 \n");
else
strcpy (line, "\n");
for (i = 0; fd_list[i].fd != -1; i++)
{
/* Strip the newline. */
len = strlen (line) - 1;
/* Format is: Local name, stdin/stdout/stderr, peer name, argv idx. */
snprintf (&line[len], BUFFER_MAX - len, "0x%x %d 0x%x %d \n",
fd_list[i].fd, fd_list[i].dup_to,
fd_list[i].peer_name, fd_list[i].arg_loc);
/* Rather safe than sorry. */
line[BUFFER_MAX - 1] = '\n';
line[BUFFER_MAX] = '\0';
}
len = strlen (line);
written = 0;
do
{
res = write (tmp_fd, &line[written], len - written);
if (res > 0)
written += res;
}
while (res > 0 || (res < 0 && errno == EAGAIN));
}
close (tmp_fd);
/* The temporary file is deleted by the gpgme-w32spawn process
(hopefully). */
TRACE_LOG4 ("CreateProcess ready: hProcess=%p, hThread=%p, "
"dwProcessID=%d, dwThreadId=%d",
pi.hProcess, pi.hThread,
(int) pi.dwProcessId, (int) pi.dwThreadId);
if (r_pid)
*r_pid = (pid_t)pi.dwProcessId;
if (ResumeThread (pi.hThread) < 0)
TRACE_LOG1 ("ResumeThread failed: ec=%d", (int) GetLastError ());
if (!CloseHandle (pi.hThread))
TRACE_LOG1 ("CloseHandle of thread failed: ec=%d",
(int) GetLastError ());
TRACE_LOG1 ("process=%p", pi.hProcess);
/* We don't need to wait for the process. */
if (!CloseHandle (pi.hProcess))
TRACE_LOG1 ("CloseHandle of process failed: ec=%d",
(int) GetLastError ());
if (! (flags & IOSPAWN_FLAG_NOCLOSE))
{
for (i = 0; fd_list[i].fd != -1; i++)
_gpgme_io_close (fd_list[i].fd);
}
for (i = 0; fd_list[i].fd != -1; i++)
if (fd_list[i].dup_to == -1)
TRACE_LOG3 ("fd[%i] = 0x%x -> 0x%x", i, fd_list[i].fd,
fd_list[i].peer_name);
else
TRACE_LOG4 ("fd[%i] = 0x%x -> 0x%x (std%s)", i, fd_list[i].fd,
fd_list[i].peer_name, (fd_list[i].dup_to == 0) ? "in" :
((fd_list[i].dup_to == 1) ? "out" : "err"));
return TRACE_SYSRES (0);
}
