summaryrefslogtreecommitdiffstats
path: root/libtdenetwork/libgpgme-copy/gpgme/w32-io.c
diff options
context:
space:
mode:
Diffstat (limited to 'libtdenetwork/libgpgme-copy/gpgme/w32-io.c')
-rw-r--r--libtdenetwork/libgpgme-copy/gpgme/w32-io.c1152
1 files changed, 1152 insertions, 0 deletions
diff --git a/libtdenetwork/libgpgme-copy/gpgme/w32-io.c b/libtdenetwork/libgpgme-copy/gpgme/w32-io.c
new file mode 100644
index 000000000..677c14e30
--- /dev/null
+++ b/libtdenetwork/libgpgme-copy/gpgme/w32-io.c
@@ -0,0 +1,1152 @@
+/* w32-io.c - W32 API I/O functions.
+ Copyright (C) 2000 Werner Koch (dd9jn)
+ Copyright (C) 2001, 2002, 2003, 2004 g10 Code GmbH
+
+ This file is part of GPGME.
+
+ GPGME is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of
+ the License, or (at your option) any later version.
+
+ GPGME is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <windows.h>
+#include <io.h>
+
+#include "util.h"
+#include "sema.h"
+#include "priv-io.h"
+#include "debug.h"
+
+/* We assume that a HANDLE can be represented by an int which should
+ be true for all i386 systems (HANDLE is defined as void *) and
+ these are the only systems for which Windows is available. Further
+ we assume that -1 denotes an invalid handle. */
+
+#define fd_to_handle(a) ((HANDLE)(a))
+#define handle_to_fd(a) ((int)(a))
+#define pid_to_handle(a) ((HANDLE)(a))
+#define handle_to_pid(a) ((int)(a))
+
+#define READBUF_SIZE 4096
+#define WRITEBUF_SIZE 4096
+#define PIPEBUF_SIZE 4096
+#define MAX_READERS 20
+#define MAX_WRITERS 20
+
+static struct {
+ int inuse;
+ int fd;
+ void (*handler)(int,void*);
+ void *value;
+} notify_table[256];
+DEFINE_STATIC_LOCK (notify_table_lock);
+
+
+struct reader_context_s {
+ HANDLE file_hd;
+ HANDLE thread_hd;
+ DECLARE_LOCK (mutex);
+
+ int stop_me;
+ int eof;
+ int eof_shortcut;
+ int error;
+ int error_code;
+
+ HANDLE have_data_ev; /* manually reset */
+ HANDLE have_space_ev; /* auto reset */
+ HANDLE stopped;
+ size_t readpos, writepos;
+ char buffer[READBUF_SIZE];
+};
+
+
+static struct {
+ volatile int used;
+ int fd;
+ struct reader_context_s *context;
+} reader_table[MAX_READERS];
+static int reader_table_size= MAX_READERS;
+DEFINE_STATIC_LOCK (reader_table_lock);
+
+
+struct writer_context_s {
+ HANDLE file_hd;
+ HANDLE thread_hd;
+ DECLARE_LOCK (mutex);
+
+ int stop_me;
+ int error;
+ int error_code;
+
+ HANDLE have_data; /* manually reset */
+ HANDLE is_empty;
+ HANDLE stopped;
+ size_t nbytes;
+ char buffer[WRITEBUF_SIZE];
+};
+
+
+static struct {
+ volatile int used;
+ int fd;
+ struct writer_context_s *context;
+} writer_table[MAX_WRITERS];
+static int writer_table_size= MAX_WRITERS;
+DEFINE_STATIC_LOCK (writer_table_lock);
+
+
+
+static int
+get_desired_thread_priority (void)
+{
+ int value;
+
+ if (!_gpgme_get_conf_int ("IOThreadPriority", &value))
+ {
+ value = THREAD_PRIORITY_HIGHEST;
+ DEBUG1 ("** Using standard IOThreadPriority of %d\n", value);
+ }
+ else
+ DEBUG1 ("** Configured IOThreadPriority is %d\n", value);
+
+ return value;
+}
+
+
+static HANDLE
+set_synchronize (HANDLE h)
+{
+ HANDLE tmp;
+
+ /* For NT we have to set the sync flag. It seems that the only
+ * way to do it is by duplicating the handle. Tsss.. */
+ if (!DuplicateHandle( GetCurrentProcess(), h,
+ GetCurrentProcess(), &tmp,
+ EVENT_MODIFY_STATE|SYNCHRONIZE, FALSE, 0 ) ) {
+ DEBUG1 ("** Set SYNCRONIZE failed: ec=%d\n", (int)GetLastError());
+ }
+ else {
+ CloseHandle (h);
+ h = tmp;
+ }
+ return h;
+}
+
+
+
+static DWORD CALLBACK
+reader (void *arg)
+{
+ struct reader_context_s *c = arg;
+ int nbytes;
+ DWORD nread;
+
+ DEBUG2 ("reader thread %p for file %p started", c->thread_hd, c->file_hd );
+ for (;;) {
+ LOCK (c->mutex);
+ /* leave a 1 byte gap so that we can see whether it is empty or full*/
+ if ((c->writepos + 1) % READBUF_SIZE == c->readpos) {
+ /* wait for space */
+ if (!ResetEvent (c->have_space_ev) )
+ DEBUG1 ("ResetEvent failed: ec=%d", (int)GetLastError ());
+ UNLOCK (c->mutex);
+ DEBUG1 ("reader thread %p: waiting for space ...", c->thread_hd );
+ WaitForSingleObject (c->have_space_ev, INFINITE);
+ DEBUG1 ("reader thread %p: got space", c->thread_hd );
+ LOCK (c->mutex);
+ }
+ if ( c->stop_me ) {
+ UNLOCK (c->mutex);
+ break;
+ }
+ nbytes = (c->readpos + READBUF_SIZE - c->writepos-1) % READBUF_SIZE;
+ if ( nbytes > READBUF_SIZE - c->writepos )
+ nbytes = READBUF_SIZE - c->writepos;
+ UNLOCK (c->mutex);
+
+ DEBUG2 ("reader thread %p: reading %d bytes", c->thread_hd, nbytes );
+ if ( !ReadFile ( c->file_hd,
+ c->buffer+c->writepos, nbytes, &nread, NULL) ) {
+ c->error_code = (int)GetLastError ();
+ if (c->error_code == ERROR_BROKEN_PIPE ) {
+ c->eof=1;
+ DEBUG1 ("reader thread %p: got eof (broken pipe)",
+ c->thread_hd );
+ }
+ else {
+ c->error = 1;
+ DEBUG2 ("reader thread %p: read error: ec=%d",
+ c->thread_hd, c->error_code );
+ }
+ break;
+ }
+ if ( !nread ) {
+ c->eof = 1;
+ DEBUG1 ("reader thread %p: got eof", c->thread_hd );
+ break;
+ }
+ DEBUG2 ("reader thread %p: got %d bytes", c->thread_hd, (int)nread );
+
+ LOCK (c->mutex);
+ if (c->stop_me) {
+ UNLOCK (c->mutex);
+ break;
+ }
+ c->writepos = (c->writepos + nread) % READBUF_SIZE;
+ if ( !SetEvent (c->have_data_ev) )
+ DEBUG1 ("SetEvent failed: ec=%d", (int)GetLastError ());
+ UNLOCK (c->mutex);
+ }
+ /* indicate that we have an error or eof */
+ if ( !SetEvent (c->have_data_ev) )
+ DEBUG1 ("SetEvent failed: ec=%d", (int)GetLastError ());
+ DEBUG1 ("reader thread %p ended", c->thread_hd );
+ SetEvent (c->stopped);
+
+ return 0;
+}
+
+
+static struct reader_context_s *
+create_reader (HANDLE fd)
+{
+ struct reader_context_s *c;
+ SECURITY_ATTRIBUTES sec_attr;
+ DWORD tid;
+
+ DEBUG1 ("creating new read thread for file handle %p", fd );
+ memset (&sec_attr, 0, sizeof sec_attr );
+ sec_attr.nLength = sizeof sec_attr;
+ sec_attr.bInheritHandle = FALSE;
+
+ c = calloc (1, sizeof *c );
+ if (!c)
+ return NULL;
+
+ c->file_hd = fd;
+ c->have_data_ev = CreateEvent (&sec_attr, TRUE, FALSE, NULL);
+ c->have_space_ev = CreateEvent (&sec_attr, FALSE, TRUE, NULL);
+ c->stopped = CreateEvent (&sec_attr, TRUE, FALSE, NULL);
+ if (!c->have_data_ev || !c->have_space_ev || !c->stopped ) {
+ DEBUG1 ("** CreateEvent failed: ec=%d\n", (int)GetLastError ());
+ if (c->have_data_ev)
+ CloseHandle (c->have_data_ev);
+ if (c->have_space_ev)
+ CloseHandle (c->have_space_ev);
+ if (c->stopped)
+ CloseHandle (c->stopped);
+ free (c);
+ return NULL;
+ }
+
+ c->have_data_ev = set_synchronize (c->have_data_ev);
+ INIT_LOCK (c->mutex);
+
+ c->thread_hd = CreateThread (&sec_attr, 0, reader, c, 0, &tid );
+ if (!c->thread_hd) {
+ DEBUG1 ("** failed to create reader thread: ec=%d\n",
+ (int)GetLastError ());
+ DESTROY_LOCK (c->mutex);
+ if (c->have_data_ev)
+ CloseHandle (c->have_data_ev);
+ if (c->have_space_ev)
+ CloseHandle (c->have_space_ev);
+ if (c->stopped)
+ CloseHandle (c->stopped);
+ free (c);
+ return NULL;
+ }
+ else {
+ /* We set the priority of the thread higher because we know that
+ it only runs for a short time. This greatly helps to increase
+ the performance of the I/O. */
+ SetThreadPriority (c->thread_hd, get_desired_thread_priority ());
+ }
+
+ return c;
+}
+
+static void
+destroy_reader (struct reader_context_s *c)
+{
+ LOCK (c->mutex);
+ c->stop_me = 1;
+ if (c->have_space_ev)
+ SetEvent (c->have_space_ev);
+ UNLOCK (c->mutex);
+
+ DEBUG1 ("waiting for thread %p termination ...", c->thread_hd );
+ WaitForSingleObject (c->stopped, INFINITE);
+ DEBUG1 ("thread %p has terminated", c->thread_hd );
+
+ if (c->stopped)
+ CloseHandle (c->stopped);
+ if (c->have_data_ev)
+ CloseHandle (c->have_data_ev);
+ if (c->have_space_ev)
+ CloseHandle (c->have_space_ev);
+ CloseHandle (c->thread_hd);
+ DESTROY_LOCK (c->mutex);
+ free (c);
+}
+
+
+/*
+ * Find a reader context or create a new one
+ * Note that the reader context will last until a io_close.
+ */
+static struct reader_context_s *
+find_reader (int fd, int start_it)
+{
+ int i;
+
+ for (i=0; i < reader_table_size ; i++ ) {
+ if ( reader_table[i].used && reader_table[i].fd == fd )
+ return reader_table[i].context;
+ }
+ if (!start_it)
+ return NULL;
+
+ LOCK (reader_table_lock);
+ for (i=0; i < reader_table_size; i++ ) {
+ if (!reader_table[i].used) {
+ reader_table[i].fd = fd;
+ reader_table[i].context = create_reader (fd_to_handle (fd));
+ reader_table[i].used = 1;
+ UNLOCK (reader_table_lock);
+ return reader_table[i].context;
+ }
+ }
+ UNLOCK (reader_table_lock);
+ return NULL;
+}
+
+
+static void
+kill_reader (int fd)
+{
+ int i;
+
+ LOCK (reader_table_lock);
+ for (i=0; i < reader_table_size; i++ ) {
+ if (reader_table[i].used && reader_table[i].fd == fd ) {
+ destroy_reader (reader_table[i].context);
+ reader_table[i].context = NULL;
+ reader_table[i].used = 0;
+ break;
+ }
+ }
+ UNLOCK (reader_table_lock);
+}
+
+
+
+int
+_gpgme_io_read ( int fd, void *buffer, size_t count )
+{
+ int nread;
+ struct reader_context_s *c = find_reader (fd,1);
+
+ DEBUG2 ("fd %d: about to read %d bytes\n", fd, (int)count );
+ if ( !c ) {
+ DEBUG0 ( "no reader thread\n");
+ return -1;
+ }
+ if (c->eof_shortcut) {
+ DEBUG1 ("fd %d: EOF (again)", fd );
+ return 0;
+ }
+
+ LOCK (c->mutex);
+ if (c->readpos == c->writepos && !c->error) { /*no data avail*/
+ UNLOCK (c->mutex);
+ DEBUG2 ("fd %d: waiting for data from thread %p", fd, c->thread_hd);
+ WaitForSingleObject (c->have_data_ev, INFINITE);
+ DEBUG2 ("fd %d: data from thread %p available", fd, c->thread_hd);
+ LOCK (c->mutex);
+ }
+
+ if (c->readpos == c->writepos || c->error) {
+ UNLOCK (c->mutex);
+ c->eof_shortcut = 1;
+ if (c->eof) {
+ DEBUG1 ("fd %d: EOF", fd );
+ return 0;
+ }
+ if (!c->error) {
+ DEBUG1 ("fd %d: EOF but eof flag not set", fd );
+ return 0;
+ }
+ DEBUG1 ("fd %d: read error", fd );
+ return -1;
+ }
+
+ nread = c->readpos < c->writepos? c->writepos - c->readpos
+ : READBUF_SIZE - c->readpos;
+ if (nread > count)
+ nread = count;
+ memcpy (buffer, c->buffer+c->readpos, nread);
+ c->readpos = (c->readpos + nread) % READBUF_SIZE;
+ if (c->readpos == c->writepos && !c->eof) {
+ if ( !ResetEvent (c->have_data_ev) )
+ DEBUG1 ("ResetEvent failed: ec=%d", (int)GetLastError ());
+ }
+ if (!SetEvent (c->have_space_ev))
+ DEBUG1 ("SetEvent failed: ec=%d", (int)GetLastError ());
+ UNLOCK (c->mutex);
+
+ DEBUG2 ("fd %d: got %d bytes\n", fd, nread );
+ if (nread > 0)
+ _gpgme_debug (2, "fd %d: got `%.*s'\n", fd, nread, buffer);
+
+ return nread;
+}
+/*
+ * The writer does use a simple buffering strategy so that we are
+ * informed about write errors as soon as possible (i.e. with the the
+ * next call to the write function
+ */
+static DWORD CALLBACK
+writer (void *arg)
+{
+ struct writer_context_s *c = arg;
+ DWORD nwritten;
+
+ DEBUG2 ("writer thread %p for file %p started", c->thread_hd, c->file_hd );
+ for (;;) {
+ LOCK (c->mutex);
+ if ( c->stop_me ) {
+ UNLOCK (c->mutex);
+ break;
+ }
+ if ( !c->nbytes ) {
+ if (!SetEvent (c->is_empty))
+ DEBUG1 ("SetEvent failed: ec=%d", (int)GetLastError ());
+ if (!ResetEvent (c->have_data) )
+ DEBUG1 ("ResetEvent failed: ec=%d", (int)GetLastError ());
+ UNLOCK (c->mutex);
+ DEBUG1 ("writer thread %p: idle ...", c->thread_hd );
+ WaitForSingleObject (c->have_data, INFINITE);
+ DEBUG1 ("writer thread %p: got data to send", c->thread_hd );
+ LOCK (c->mutex);
+ }
+ if ( c->stop_me ) {
+ UNLOCK (c->mutex);
+ break;
+ }
+ UNLOCK (c->mutex);
+
+ DEBUG2 ("writer thread %p: writing %d bytes",
+ c->thread_hd, c->nbytes );
+ if ( c->nbytes && !WriteFile ( c->file_hd, c->buffer, c->nbytes,
+ &nwritten, NULL)) {
+ c->error_code = (int)GetLastError ();
+ c->error = 1;
+ DEBUG2 ("writer thread %p: write error: ec=%d",
+ c->thread_hd, c->error_code );
+ break;
+ }
+ DEBUG2 ("writer thread %p: wrote %d bytes",
+ c->thread_hd, (int)nwritten );
+
+ LOCK (c->mutex);
+ c->nbytes -= nwritten;
+ UNLOCK (c->mutex);
+ }
+ /* indicate that we have an error */
+ if ( !SetEvent (c->is_empty) )
+ DEBUG1 ("SetEvent failed: ec=%d", (int)GetLastError ());
+ DEBUG1 ("writer thread %p ended", c->thread_hd );
+ SetEvent (c->stopped);
+
+ return 0;
+}
+
+
+static struct writer_context_s *
+create_writer (HANDLE fd)
+{
+ struct writer_context_s *c;
+ SECURITY_ATTRIBUTES sec_attr;
+ DWORD tid;
+
+ DEBUG1 ("creating new write thread for file handle %p", fd );
+ memset (&sec_attr, 0, sizeof sec_attr );
+ sec_attr.nLength = sizeof sec_attr;
+ sec_attr.bInheritHandle = FALSE;
+
+ c = calloc (1, sizeof *c );
+ if (!c)
+ return NULL;
+
+ c->file_hd = fd;
+ c->have_data = CreateEvent (&sec_attr, TRUE, FALSE, NULL);
+ c->is_empty = CreateEvent (&sec_attr, TRUE, TRUE, NULL);
+ c->stopped = CreateEvent (&sec_attr, TRUE, FALSE, NULL);
+ if (!c->have_data || !c->is_empty || !c->stopped ) {
+ DEBUG1 ("** CreateEvent failed: ec=%d\n", (int)GetLastError ());
+ if (c->have_data)
+ CloseHandle (c->have_data);
+ if (c->is_empty)
+ CloseHandle (c->is_empty);
+ if (c->stopped)
+ CloseHandle (c->stopped);
+ free (c);
+ return NULL;
+ }
+
+ c->is_empty = set_synchronize (c->is_empty);
+ INIT_LOCK (c->mutex);
+
+ c->thread_hd = CreateThread (&sec_attr, 0, writer, c, 0, &tid );
+ if (!c->thread_hd) {
+ DEBUG1 ("** failed to create writer thread: ec=%d\n",
+ (int)GetLastError ());
+ DESTROY_LOCK (c->mutex);
+ if (c->have_data)
+ CloseHandle (c->have_data);
+ if (c->is_empty)
+ CloseHandle (c->is_empty);
+ if (c->stopped)
+ CloseHandle (c->stopped);
+ free (c);
+ return NULL;
+ }
+ else {
+ /* We set the priority of the thread higher because we know that
+ it only runs for a short time. This greatly helps to increase
+ the performance of the I/O. */
+ SetThreadPriority (c->thread_hd, get_desired_thread_priority ());
+ }
+
+ return c;
+}
+
+static void
+destroy_writer (struct writer_context_s *c)
+{
+ LOCK (c->mutex);
+ c->stop_me = 1;
+ if (c->have_data)
+ SetEvent (c->have_data);
+ UNLOCK (c->mutex);
+
+ DEBUG1 ("waiting for thread %p termination ...", c->thread_hd );
+ WaitForSingleObject (c->stopped, INFINITE);
+ DEBUG1 ("thread %p has terminated", c->thread_hd );
+
+ if (c->stopped)
+ CloseHandle (c->stopped);
+ if (c->have_data)
+ CloseHandle (c->have_data);
+ if (c->is_empty)
+ CloseHandle (c->is_empty);
+ CloseHandle (c->thread_hd);
+ DESTROY_LOCK (c->mutex);
+ free (c);
+}
+
+
+/*
+ * Find a writer context or create a new one
+ * Note that the writer context will last until a io_close.
+ */
+static struct writer_context_s *
+find_writer (int fd, int start_it)
+{
+ int i;
+
+ for (i=0; i < writer_table_size ; i++ ) {
+ if ( writer_table[i].used && writer_table[i].fd == fd )
+ return writer_table[i].context;
+ }
+ if (!start_it)
+ return NULL;
+
+ LOCK (writer_table_lock);
+ for (i=0; i < writer_table_size; i++ ) {
+ if (!writer_table[i].used) {
+ writer_table[i].fd = fd;
+ writer_table[i].context = create_writer (fd_to_handle (fd));
+ writer_table[i].used = 1;
+ UNLOCK (writer_table_lock);
+ return writer_table[i].context;
+ }
+ }
+ UNLOCK (writer_table_lock);
+ return NULL;
+}
+
+
+static void
+kill_writer (int fd)
+{
+ int i;
+
+ LOCK (writer_table_lock);
+ for (i=0; i < writer_table_size; i++ ) {
+ if (writer_table[i].used && writer_table[i].fd == fd ) {
+ destroy_writer (writer_table[i].context);
+ writer_table[i].context = NULL;
+ writer_table[i].used = 0;
+ break;
+ }
+ }
+ UNLOCK (writer_table_lock);
+}
+
+
+
+
+int
+_gpgme_io_write ( int fd, const void *buffer, size_t count )
+{
+ struct writer_context_s *c = find_writer (fd,1);
+
+ DEBUG2 ("fd %d: about to write %d bytes\n", fd, (int)count );
+ _gpgme_debug (2, "fd %d: write `%.*s'\n", fd, (int) count, buffer);
+ if ( !c ) {
+ DEBUG0 ( "no writer thread\n");
+ return -1;
+ }
+
+ LOCK (c->mutex);
+ if ( c->nbytes ) { /* bytes are pending for send */
+ /* Reset the is_empty event. Better safe than sorry. */
+ if (!ResetEvent (c->is_empty))
+ DEBUG1 ("ResetEvent failed: ec=%d", (int)GetLastError ());
+ UNLOCK (c->mutex);
+ DEBUG2 ("fd %d: waiting for empty buffer in thread %p",
+ fd, c->thread_hd);
+ WaitForSingleObject (c->is_empty, INFINITE);
+ DEBUG2 ("fd %d: thread %p buffer is empty", fd, c->thread_hd);
+ LOCK (c->mutex);
+ }
+
+ if ( c->error) {
+ UNLOCK (c->mutex);
+ DEBUG1 ("fd %d: write error", fd );
+ return -1;
+ }
+
+ /* If no error occured, the number of bytes in the buffer must be
+ zero. */
+ assert (!c->nbytes);
+
+ if (count > WRITEBUF_SIZE)
+ count = WRITEBUF_SIZE;
+ memcpy (c->buffer, buffer, count);
+ c->nbytes = count;
+
+ /* We have to reset the is_empty event early, because it is also
+ used by the select() implementation to probe the channel. */
+ if (!ResetEvent (c->is_empty))
+ DEBUG1 ("ResetEvent failed: ec=%d", (int)GetLastError ());
+ if (!SetEvent (c->have_data))
+ DEBUG1 ("SetEvent failed: ec=%d", (int)GetLastError ());
+ UNLOCK (c->mutex);
+
+ DEBUG2 ("fd %d: copied %d bytes\n",
+ fd, (int)count );
+ return (int)count;
+}
+
+
+int
+_gpgme_io_pipe ( int filedes[2], int inherit_idx )
+{
+ HANDLE r, w;
+ SECURITY_ATTRIBUTES sec_attr;
+
+ memset (&sec_attr, 0, sizeof sec_attr );
+ sec_attr.nLength = sizeof sec_attr;
+ sec_attr.bInheritHandle = FALSE;
+
+ if (!CreatePipe ( &r, &w, &sec_attr, PIPEBUF_SIZE))
+ return -1;
+ /* Make one end inheritable. */
+ if ( inherit_idx == 0 ) {
+ HANDLE h;
+ if (!DuplicateHandle( GetCurrentProcess(), r,
+ GetCurrentProcess(), &h, 0,
+ TRUE, DUPLICATE_SAME_ACCESS ) ) {
+ DEBUG1 ("DuplicateHandle failed: ec=%d\n", (int)GetLastError());
+ CloseHandle (r);
+ CloseHandle (w);
+ return -1;
+ }
+ CloseHandle (r);
+ r = h;
+ }
+ else if ( inherit_idx == 1 ) {
+ HANDLE h;
+ if (!DuplicateHandle( GetCurrentProcess(), w,
+ GetCurrentProcess(), &h, 0,
+ TRUE, DUPLICATE_SAME_ACCESS ) ) {
+ DEBUG1 ("DuplicateHandle failed: ec=%d\n", (int)GetLastError());
+ CloseHandle (r);
+ CloseHandle (w);
+ return -1;
+ }
+ CloseHandle (w);
+ w = h;
+ }
+
+ filedes[0] = handle_to_fd (r);
+ filedes[1] = handle_to_fd (w);
+ DEBUG5 ("CreatePipe %p %p %d %d inherit=%d\n", r, w,
+ filedes[0], filedes[1], inherit_idx );
+ return 0;
+}
+
+int
+_gpgme_io_close ( int fd )
+{
+ int i;
+ void (*handler)(int, void*) = NULL;
+ void *value = NULL;
+
+ if ( fd == -1 )
+ return -1;
+
+ DEBUG1 ("** closing handle for fd %d\n", fd);
+ kill_reader (fd);
+ kill_writer (fd);
+ LOCK (notify_table_lock);
+ for ( i=0; i < DIM (notify_table); i++ ) {
+ if (notify_table[i].inuse && notify_table[i].fd == fd) {
+ handler = notify_table[i].handler;
+ value = notify_table[i].value;
+ notify_table[i].handler = NULL;
+ notify_table[i].value = NULL;
+ notify_table[i].inuse = 0;
+ break;
+ }
+ }
+ UNLOCK (notify_table_lock);
+ if (handler)
+ handler (fd, value);
+
+ if ( !CloseHandle (fd_to_handle (fd)) ) {
+ DEBUG2 ("CloseHandle for fd %d failed: ec=%d\n",
+ fd, (int)GetLastError ());
+ return -1;
+ }
+
+ return 0;
+}
+
+int
+_gpgme_io_set_close_notify (int fd, void (*handler)(int, void*), void *value)
+{
+ int i;
+
+ assert (fd != -1);
+
+ LOCK (notify_table_lock);
+ for (i=0; i < DIM (notify_table); i++ ) {
+ if ( notify_table[i].inuse && notify_table[i].fd == fd )
+ break;
+ }
+ if ( i == DIM (notify_table) ) {
+ for (i=0; i < DIM (notify_table); i++ ) {
+ if ( !notify_table[i].inuse )
+ break;
+ }
+ }
+ if ( i == DIM (notify_table) ) {
+ UNLOCK (notify_table_lock);
+ return -1;
+ }
+ notify_table[i].fd = fd;
+ notify_table[i].handler = handler;
+ notify_table[i].value = value;
+ notify_table[i].inuse = 1;
+ UNLOCK (notify_table_lock);
+ DEBUG2 ("set notification for fd %d (idx=%d)", fd, i );
+ return 0;
+}
+
+
+int
+_gpgme_io_set_nonblocking ( int fd )
+{
+ return 0;
+}
+
+
+static char *
+build_commandline (char **argv)
+{
+ int i;
+ int j;
+ int n = 0;
+ char *buf;
+ char *p;
+
+ /* We have to quote some things because under Windows the program
+ parses the commandline and does some unquoting. We enclose the
+ whole argument in double-quotes, and escape literal double-quotes
+ as well as backslashes with a backslash. We end up with a
+ trailing space at the end of the line, but that is harmless. */
+ for (i = 0; argv[i]; i++)
+ {
+ p = argv[i];
+ /* The leading double-quote. */
+ n++;
+ while (*p)
+ {
+ /* An extra one for each literal that must be escaped. */
+ if (*p == '\\' || *p == '"')
+ n++;
+ n++;
+ p++;
+ }
+ /* The trailing double-quote and the delimiter. */
+ n += 2;
+ }
+ /* And a trailing zero. */
+ n++;
+
+ buf = p = malloc (n);
+ if (!buf)
+ return NULL;
+ for (i = 0; argv[i]; i++)
+ {
+ char *argvp = argv[i];
+
+ *(p++) = '"';
+ while (*argvp)
+ {
+ if (*argvp == '\\' || *argvp == '"')
+ *(p++) = '\\';
+ *(p++) = *(argvp++);
+ }
+ *(p++) = '"';
+ *(p++) = ' ';
+ }
+ *(p++) = 0;
+
+ return buf;
+}
+
+
+int
+_gpgme_io_spawn ( const char *path, char **argv,
+ struct spawn_fd_item_s *fd_child_list,
+ struct spawn_fd_item_s *fd_parent_list )
+{
+ SECURITY_ATTRIBUTES sec_attr;
+ PROCESS_INFORMATION pi = {
+ NULL, /* returns process handle */
+ 0, /* returns primary thread handle */
+ 0, /* returns pid */
+ 0 /* returns tid */
+ };
+ STARTUPINFO si;
+ char *envblock = NULL;
+ int cr_flags = CREATE_DEFAULT_ERROR_MODE
+ | GetPriorityClass (GetCurrentProcess ());
+ int i;
+ char *arg_string;
+ int duped_stdin = 0;
+ int duped_stderr = 0;
+ HANDLE hnul = INVALID_HANDLE_VALUE;
+ /* FIXME. */
+ int debug_me = 0;
+
+ memset (&sec_attr, 0, sizeof sec_attr );
+ sec_attr.nLength = sizeof sec_attr;
+ sec_attr.bInheritHandle = FALSE;
+
+ arg_string = build_commandline ( argv );
+ if (!arg_string )
+ return -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 = GetStdHandle (STD_INPUT_HANDLE);
+ si.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE);
+ si.hStdError = GetStdHandle (STD_ERROR_HANDLE);
+
+ for (i=0; fd_child_list[i].fd != -1; i++ ) {
+ if (fd_child_list[i].dup_to == 0 ) {
+ si.hStdInput = fd_to_handle (fd_child_list[i].fd);
+ DEBUG1 ("using %d for stdin", fd_child_list[i].fd );
+ duped_stdin=1;
+ }
+ else if (fd_child_list[i].dup_to == 1 ) {
+ si.hStdOutput = fd_to_handle (fd_child_list[i].fd);
+ DEBUG1 ("using %d for stdout", fd_child_list[i].fd );
+ }
+ else if (fd_child_list[i].dup_to == 2 ) {
+ si.hStdError = fd_to_handle (fd_child_list[i].fd);
+ DEBUG1 ("using %d for stderr", fd_child_list[i].fd );
+ duped_stderr = 1;
+ }
+ }
+
+ if( !duped_stdin || !duped_stderr ) {
+ SECURITY_ATTRIBUTES sa;
+
+ memset (&sa, 0, sizeof sa );
+ sa.nLength = sizeof sa;
+ sa.bInheritHandle = TRUE;
+ hnul = CreateFile ( "nul",
+ GENERIC_READ|GENERIC_WRITE,
+ FILE_SHARE_READ|FILE_SHARE_WRITE,
+ &sa,
+ OPEN_EXISTING,
+ FILE_ATTRIBUTE_NORMAL,
+ NULL );
+ if ( hnul == INVALID_HANDLE_VALUE ) {
+ DEBUG1 ("can't open `nul': ec=%d\n", (int)GetLastError ());
+ free (arg_string);
+ return -1;
+ }
+ /* Make sure that the process has a connected stdin */
+ if ( !duped_stdin ) {
+ si.hStdInput = hnul;
+ DEBUG1 ("using %d for dummy stdin", (int)hnul );
+ }
+ /* We normally don't want all the normal output */
+ if ( !duped_stderr ) {
+ si.hStdError = hnul;
+ DEBUG1 ("using %d for dummy stderr", (int)hnul );
+ }
+ }
+
+ DEBUG2 ("CreateProcess, path=`%s' args=`%s'", path, arg_string);
+ cr_flags |= CREATE_SUSPENDED;
+ if ( !CreateProcessA (path,
+ arg_string,
+ &sec_attr, /* process security attributes */
+ &sec_attr, /* thread security attributes */
+ TRUE, /* inherit handles */
+ cr_flags, /* creation flags */
+ envblock, /* environment */
+ NULL, /* use current drive/directory */
+ &si, /* startup information */
+ &pi /* returns process information */
+ ) ) {
+ DEBUG1 ("CreateProcess failed: ec=%d\n", (int) GetLastError ());
+ free (arg_string);
+ return -1;
+ }
+
+ /* Close the /dev/nul handle if used. */
+ if (hnul != INVALID_HANDLE_VALUE ) {
+ if ( !CloseHandle ( hnul ) )
+ DEBUG1 ("CloseHandle(hnul) failed: ec=%d\n", (int)GetLastError());
+ }
+
+ /* Close the other ends of the pipes. */
+ for (i = 0; fd_parent_list[i].fd != -1; i++)
+ _gpgme_io_close (fd_parent_list[i].fd);
+
+ DEBUG4 ("CreateProcess ready\n"
+ "- hProcess=%p hThread=%p\n"
+ "- dwProcessID=%d dwThreadId=%d\n",
+ pi.hProcess, pi.hThread,
+ (int) pi.dwProcessId, (int) pi.dwThreadId);
+
+ if ( ResumeThread ( pi.hThread ) < 0 ) {
+ DEBUG1 ("ResumeThread failed: ec=%d\n", (int)GetLastError ());
+ }
+
+ if ( !CloseHandle (pi.hThread) ) {
+ DEBUG1 ("CloseHandle of thread failed: ec=%d\n",
+ (int)GetLastError ());
+ }
+
+ return handle_to_pid (pi.hProcess);
+}
+
+
+/*
+ * Select on the list of fds.
+ * Returns: -1 = error
+ * 0 = timeout or nothing to select
+ * >0 = number of signaled fds
+ */
+int
+_gpgme_io_select ( struct io_select_fd_s *fds, size_t nfds, int nonblock )
+{
+ HANDLE waitbuf[MAXIMUM_WAIT_OBJECTS];
+ int waitidx[MAXIMUM_WAIT_OBJECTS];
+ int code, nwait;
+ int i, any;
+ int count;
+ void *dbg_help;
+
+ restart:
+ DEBUG_BEGIN (dbg_help, 3, "select on [ ");
+ any = 0;
+ nwait = 0;
+ count = 0;
+ for ( i=0; i < nfds; i++ ) {
+ if ( fds[i].fd == -1 )
+ continue;
+ fds[i].signaled = 0;
+ if ( fds[i].for_read || fds[i].for_write ) {
+ if ( fds[i].frozen ) {
+ DEBUG_ADD1 (dbg_help, "f%d ", fds[i].fd );
+ }
+ else if ( fds[i].for_read ) {
+ struct reader_context_s *c = find_reader (fds[i].fd,1);
+
+ if (!c) {
+ DEBUG1 ("oops: no reader thread for fd %d", fds[i].fd);
+ }
+ else {
+ if ( nwait >= DIM (waitbuf) ) {
+ DEBUG_END (dbg_help, "oops ]");
+ DEBUG0 ("Too many objects for WFMO!" );
+ return -1;
+ }
+ waitidx[nwait] = i;
+ waitbuf[nwait++] = c->have_data_ev;
+ }
+ DEBUG_ADD1 (dbg_help, "r%d ", fds[i].fd );
+ any = 1;
+ }
+ else if ( fds[i].for_write ) {
+ struct writer_context_s *c = find_writer (fds[i].fd,1);
+
+ if (!c) {
+ DEBUG1 ("oops: no writer thread for fd %d", fds[i].fd);
+ }
+ else {
+ if ( nwait >= DIM (waitbuf) ) {
+ DEBUG_END (dbg_help, "oops ]");
+ DEBUG0 ("Too many objects for WFMO!" );
+ return -1;
+ }
+ waitidx[nwait] = i;
+ waitbuf[nwait++] = c->is_empty;
+ }
+ DEBUG_ADD1 (dbg_help, "w%d ", fds[i].fd );
+ any = 1;
+ }
+ }
+ }
+ DEBUG_END (dbg_help, "]");
+ if (!any)
+ return 0;
+
+ code = WaitForMultipleObjects ( nwait, waitbuf, 0, nonblock ? 0 : 1000);
+ if ( code >= WAIT_OBJECT_0 && code < WAIT_OBJECT_0 + nwait ) {
+ /* This WFMO is a really silly function: It does return either
+ * the index of the signaled object or if 2 objects have been
+ * signalled at the same time, the index of the object with the
+ * lowest object is returned - so and how do we find out
+ * how many objects have been signaled???.
+ * The only solution I can imagine is to test each object starting
+ * with the returned index individually - how dull.
+ */
+ any = 0;
+ for (i=code - WAIT_OBJECT_0; i < nwait; i++ ) {
+ if (WaitForSingleObject (waitbuf[i], 0) == WAIT_OBJECT_0) {
+ assert (waitidx[i] >=0 && waitidx[i] < nfds);
+ fds[waitidx[i]].signaled = 1;
+ any = 1;
+ count++;
+ }
+ }
+ if (!any) {
+ DEBUG0 ("Oops: No signaled objects found after WFMO");
+ count = -1;
+ }
+ }
+ else if ( code == WAIT_TIMEOUT ) {
+ DEBUG0 ("WFMO timed out\n" );
+ }
+ else if (code == WAIT_FAILED ) {
+ int le = (int)GetLastError ();
+ if ( le == ERROR_INVALID_HANDLE ) {
+ int k, j = handle_to_fd (waitbuf[i]);
+
+ DEBUG1 ("WFMO invalid handle %d removed\n", j);
+ for (k=0 ; k < nfds; k++ ) {
+ if ( fds[k].fd == j ) {
+ fds[k].for_read = fds[k].for_write = 0;
+ goto restart;
+ }
+ }
+ DEBUG0 (" oops, or not???\n");
+ }
+ DEBUG1 ("WFMO failed: %d\n", le );
+ count = -1;
+ }
+ else {
+ DEBUG1 ("WFMO returned %d\n", code );
+ count = -1;
+ }
+
+ if ( count ) {
+ DEBUG_BEGIN (dbg_help, 3, " signaled [ ");
+ for ( i=0; i < nfds; i++ ) {
+ if ( fds[i].fd == -1 )
+ continue;
+ if ( (fds[i].for_read || fds[i].for_write) && fds[i].signaled ) {
+ DEBUG_ADD2 (dbg_help, "%c%d ",
+ fds[i].for_read? 'r':'w',fds[i].fd );
+ }
+ }
+ DEBUG_END (dbg_help, "]");
+ }
+
+ return count;
+}
+
+void
+_gpgme_io_subsystem_init (void)
+{
+
+}
+
+
+/* Write the printable version of FD to the buffer BUF of length
+ BUFLEN. The printable version is the representation on the command
+ line that the child process expects. */
+int
+_gpgme_io_fd2str (char *buf, int buflen, int fd)
+{
+ return snprintf (buf, buflen, "%d", fd);
+}
+
+
+/* The following interface is only useful for GPGME Glib. */
+
+/* Look up the giochannel for file descriptor FD. */
+void *
+gpgme_get_giochannel (int fd)
+{
+ return NULL;
+}
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-04-19 17:36:29 +0000