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authorBram Moolenaar <Bram@vim.org>2016-06-26 20:37:46 +0200
committerBram Moolenaar <Bram@vim.org>2016-06-26 20:37:46 +0200
commit97ff9b9cffd97219d888874b9b3811d55e99c78f (patch)
treecfd1f0b30064c64e80e3520a9ffa7854b19f36e4 /src/iscygpty.c
parent52df117df724a7ad20affdf15214d2df2e507dcc (diff)
downloadvim-git-97ff9b9cffd97219d888874b9b3811d55e99c78f.tar.gz
patch 7.4.1963v7.4.1963
Problem: Running Win32 Vim in mintty does not work. Solution: Detect mintty and give a helpful error message. (Ken Takata)
Diffstat (limited to 'src/iscygpty.c')
-rw-r--r--src/iscygpty.c181
1 files changed, 181 insertions, 0 deletions
diff --git a/src/iscygpty.c b/src/iscygpty.c
new file mode 100644
index 000000000..4a6dc3d42
--- /dev/null
+++ b/src/iscygpty.c
@@ -0,0 +1,181 @@
+/*
+ * iscygpty.c -- part of ptycheck
+ * https://github.com/k-takata/ptycheck
+ *
+ * Copyright (c) 2015-2016 K.Takata
+ *
+ * You can redistribute it and/or modify it under the terms of either
+ * the MIT license (as described below) or the Vim license.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <ctype.h>
+#include <io.h>
+#include <wchar.h>
+#include <windows.h>
+
+#ifdef USE_FILEEXTD
+/* VC 7.1 or earlier doesn't support SAL. */
+# if !defined(_MSC_VER) || (_MSC_VER < 1400)
+# define __out
+# define __in
+# define __in_opt
+# endif
+/* Win32 FileID API Library:
+ * http://www.microsoft.com/en-us/download/details.aspx?id=22599
+ * Needed for WinXP. */
+# include <fileextd.h>
+#else /* USE_FILEEXTD */
+/* VC 8 or earlier. */
+# if defined(_MSC_VER) && (_MSC_VER < 1500)
+# ifdef ENABLE_STUB_IMPL
+# define STUB_IMPL
+# else
+# error "Win32 FileID API Library is required for VC2005 or earlier."
+# endif
+# endif
+#endif /* USE_FILEEXTD */
+
+
+#include "iscygpty.h"
+
+//#define USE_DYNFILEID
+#ifdef USE_DYNFILEID
+typedef BOOL (WINAPI *pfnGetFileInformationByHandleEx)(
+ HANDLE hFile,
+ FILE_INFO_BY_HANDLE_CLASS FileInformationClass,
+ LPVOID lpFileInformation,
+ DWORD dwBufferSize
+);
+static pfnGetFileInformationByHandleEx pGetFileInformationByHandleEx = NULL;
+
+# ifndef USE_FILEEXTD
+static BOOL WINAPI stub_GetFileInformationByHandleEx(
+ HANDLE hFile,
+ FILE_INFO_BY_HANDLE_CLASS FileInformationClass,
+ LPVOID lpFileInformation,
+ DWORD dwBufferSize
+ )
+{
+ return FALSE;
+}
+# endif
+
+static void setup_fileid_api(void)
+{
+ if (pGetFileInformationByHandleEx != NULL) {
+ return;
+ }
+ pGetFileInformationByHandleEx = (pfnGetFileInformationByHandleEx)
+ GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")),
+ "GetFileInformationByHandleEx");
+ if (pGetFileInformationByHandleEx == NULL) {
+# ifdef USE_FILEEXTD
+ pGetFileInformationByHandleEx = GetFileInformationByHandleEx;
+# else
+ pGetFileInformationByHandleEx = stub_GetFileInformationByHandleEx;
+# endif
+ }
+}
+#else
+# define pGetFileInformationByHandleEx GetFileInformationByHandleEx
+# define setup_fileid_api()
+#endif
+
+
+#define is_wprefix(s, prefix) \
+ (wcsncmp((s), (prefix), sizeof(prefix) / sizeof(WCHAR) - 1) == 0)
+
+/* Check if the fd is a cygwin/msys's pty. */
+int is_cygpty(int fd)
+{
+#ifdef STUB_IMPL
+ return 0;
+#else
+ HANDLE h;
+ int size = sizeof(FILE_NAME_INFO) + sizeof(WCHAR) * MAX_PATH;
+ FILE_NAME_INFO *nameinfo;
+ WCHAR *p = NULL;
+
+ setup_fileid_api();
+
+ h = (HANDLE) _get_osfhandle(fd);
+ if (h == INVALID_HANDLE_VALUE) {
+ return 0;
+ }
+ /* Cygwin/msys's pty is a pipe. */
+ if (GetFileType(h) != FILE_TYPE_PIPE) {
+ return 0;
+ }
+ nameinfo = malloc(size);
+ if (nameinfo == NULL) {
+ return 0;
+ }
+ /* Check the name of the pipe:
+ * '\{cygwin,msys}-XXXXXXXXXXXXXXXX-ptyN-{from,to}-master' */
+ if (pGetFileInformationByHandleEx(h, FileNameInfo, nameinfo, size)) {
+ nameinfo->FileName[nameinfo->FileNameLength / sizeof(WCHAR)] = L'\0';
+ p = nameinfo->FileName;
+ if (is_wprefix(p, L"\\cygwin-")) { /* Cygwin */
+ p += 8;
+ } else if (is_wprefix(p, L"\\msys-")) { /* MSYS and MSYS2 */
+ p += 6;
+ } else {
+ p = NULL;
+ }
+ if (p != NULL) {
+ while (*p && isxdigit(*p)) /* Skip 16-digit hexadecimal. */
+ ++p;
+ if (is_wprefix(p, L"-pty")) {
+ p += 4;
+ } else {
+ p = NULL;
+ }
+ }
+ if (p != NULL) {
+ while (*p && isdigit(*p)) /* Skip pty number. */
+ ++p;
+ if (is_wprefix(p, L"-from-master")) {
+ //p += 12;
+ } else if (is_wprefix(p, L"-to-master")) {
+ //p += 10;
+ } else {
+ p = NULL;
+ }
+ }
+ }
+ free(nameinfo);
+ return (p != NULL);
+#endif /* STUB_IMPL */
+}
+
+/* Check if at least one cygwin/msys pty is used. */
+int is_cygpty_used(void)
+{
+ int fd, ret = 0;
+
+ for (fd = 0; fd < 3; fd++) {
+ ret |= is_cygpty(fd);
+ }
+ return ret;
+}
+
+/* vim: set ts=4 sw=4: */