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python: Fix wrong use of write.

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* lang/python/helpers.c (pyPassphraseCb): Use gpgme_io_writen.
(_gpg_interact_cb): Ditto.
* lang/python/helpers.h (write) [W32]: Remove bad write macro.
--
GnuPG-bug-id: T6501

Using write(2) without checking for EINTR is a not a good idea.
Futher gpgme_io_writen is the correct way to send data from a
callback.  This also fixed the wrong use of a simple macro for
Windows.
This commit is contained in:
Werner Koch 2023-05-23 15:52:25 +02:00
parent e622e36f1f
commit 36a68bc530
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
2 changed files with 5 additions and 10 deletions
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10
lang/python/helpers.c
View File

@ -404,7 +404,7 @@ static gpgme_error_t pyPassphraseCb(void *hook,
err_status = _gpg_exception2code();
} else {
if (!retval) {
if (write(fd, "\n", 1) < 0) {
if (gpgme_io_writen (fd, "\n", 1) < 0) {
err_status = gpgme_error_from_syserror ();
_gpg_raise_exception (err_status);
}
@ -439,11 +439,11 @@ static gpgme_error_t pyPassphraseCb(void *hook,
goto leave;
}
if (write(fd, buf, len) < 0) {
if (gpgme_io_writen (fd, buf, len) < 0) {
err_status = gpgme_error_from_syserror ();
_gpg_raise_exception (err_status);
}
if (! err_status && write(fd, "\n", 1) < 0) {
if (! err_status && gpgme_io_writen (fd, "\n", 1) < 0) {
err_status = gpgme_error_from_syserror ();
_gpg_raise_exception (err_status);
}
@ -761,11 +761,11 @@ _gpg_interact_cb(void *opaque, const char *keyword,
goto leave;
}
if (write(fd, buffer, size) < 0) {
if (gpgme_io_writen (fd, buffer, size) < 0) {
err_status = gpgme_error_from_syserror ();
_gpg_raise_exception (err_status);
}
if (! err_status && write(fd, "\n", 1) < 0) {
if (! err_status && gpgme_io_writen (fd, "\n", 1) < 0) {
err_status = gpgme_error_from_syserror ();
_gpg_raise_exception (err_status);
}

5
lang/python/helpers.h
View File

@ -25,11 +25,6 @@
#include <gpgme.h>
#include "Python.h"
#ifdef _WIN32
#include <windows.h>
#define write(fd, str, sz) {DWORD written; WriteFile((HANDLE) fd, str, sz, &written, 0);}
#endif
/* Flag specifying whether this is an in-tree build. */
extern int gpg_in_tree_build;