WinCE: Add support for WinCE (sources)

4 files changed, 218 insertions, 1 deletions

diff --git a/msvc/config.h b/msvc/config.h
index 730d091..eb05d3d 100644
--- a/msvc/config.h
+++ b/msvc/config.h
@@ -23,14 +23,22 @@
 /* Message logging */
 #define ENABLE_LOGGING 1
 
-/* Windows backend */
+/* Windows/WinCE backend */
+#if defined(_WIN32_WCE)
+#define OS_WINCE 1
+#else
 #define OS_WINDOWS 1
+#endif
 
 /* type of second poll() argument */
 #define POLL_NFDS_TYPE unsigned int
 
+#if !defined(_WIN32_WCE)
+
 /* Define to 1 if you have the <signal.h> header file. */
 #define HAVE_SIGNAL_H 1
 
 /* Define to 1 if you have the <sys/types.h> header file. */
 #define HAVE_SYS_TYPES_H 1
+
+#endif
\ No newline at end of file
diff --git a/msvc/errno.h b/msvc/errno.h
new file mode 100644
index 0000000..a1d4f64
--- /dev/null
+++ b/msvc/errno.h
@@ -0,0 +1,100 @@
+/* 
+ * errno.h
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is a part of the mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER within the package.
+ *
+ * Error numbers and access to error reporting.
+ *
+ */
+
+#ifndef _ERRNO_H_
+#define	_ERRNO_H_
+
+#include <crtdefs.h>
+
+/*
+ * Error numbers.
+ * TODO: Can't be sure of some of these assignments, I guessed from the
+ * names given by strerror and the defines in the Cygnus errno.h. A lot
+ * of the names from the Cygnus errno.h are not represented, and a few
+ * of the descriptions returned by strerror do not obviously match
+ * their error naming.
+ */
+#define EPERM		1	/* Operation not permitted */
+#define	ENOFILE		2	/* No such file or directory */
+#define	ENOENT		2
+#define	ESRCH		3	/* No such process */
+#define	EINTR		4	/* Interrupted function call */
+#define	EIO		5	/* Input/output error */
+#define	ENXIO		6	/* No such device or address */
+#define	E2BIG		7	/* Arg list too long */
+#define	ENOEXEC		8	/* Exec format error */
+#define	EBADF		9	/* Bad file descriptor */
+#define	ECHILD		10	/* No child processes */
+#define	EAGAIN		11	/* Resource temporarily unavailable */
+#define	ENOMEM		12	/* Not enough space */
+#define	EACCES		13	/* Permission denied */
+#define	EFAULT		14	/* Bad address */
+/* 15 - Unknown Error */
+#define	EBUSY		16	/* strerror reports "Resource device" */
+#define	EEXIST		17	/* File exists */
+#define	EXDEV		18	/* Improper link (cross-device link?) */
+#define	ENODEV		19	/* No such device */
+#define	ENOTDIR		20	/* Not a directory */
+#define	EISDIR		21	/* Is a directory */
+#define	EINVAL		22	/* Invalid argument */
+#define	ENFILE		23	/* Too many open files in system */
+#define	EMFILE		24	/* Too many open files */
+#define	ENOTTY		25	/* Inappropriate I/O control operation */
+/* 26 - Unknown Error */
+#define	EFBIG		27	/* File too large */
+#define	ENOSPC		28	/* No space left on device */
+#define	ESPIPE		29	/* Invalid seek (seek on a pipe?) */
+#define	EROFS		30	/* Read-only file system */
+#define	EMLINK		31	/* Too many links */
+#define	EPIPE		32	/* Broken pipe */
+#define	EDOM		33	/* Domain error (math functions) */
+#define	ERANGE		34	/* Result too large (possibly too small) */
+/* 35 - Unknown Error */
+#define	EDEADLOCK	36	/* Resource deadlock avoided (non-Cyg) */
+#define	EDEADLK		36
+/* 37 - Unknown Error */
+#define	ENAMETOOLONG	38	/* Filename too long (91 in Cyg?) */
+#define	ENOLCK		39	/* No locks available (46 in Cyg?) */
+#define	ENOSYS		40	/* Function not implemented (88 in Cyg?) */
+#define	ENOTEMPTY	41	/* Directory not empty (90 in Cyg?) */
+#define	EILSEQ		42	/* Illegal byte sequence */
+
+/*
+ * NOTE: ENAMETOOLONG and ENOTEMPTY conflict with definitions in the
+ *       sockets.h header provided with windows32api-0.1.2.
+ *       You should go and put an #if 0 ... #endif around the whole block
+ *       of errors (look at the comment above them).
+ */
+
+#ifndef	RC_INVOKED
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/*
+ * Definitions of errno. For _doserrno, sys_nerr and * sys_errlist, see
+ * stdlib.h.
+ */
+#if defined(_UWIN) || defined(_WIN32_WCE)
+#undef errno
+extern int errno;
+#else
+_CRTIMP int* __cdecl _errno(void);
+#define	errno		(*_errno())
+#endif
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* Not RC_INVOKED */
+
+#endif	/* Not _ERRNO_H_ */
\ No newline at end of file
diff --git a/msvc/missing.c b/msvc/missing.c
new file mode 100644
index 0000000..85d9d6f
--- /dev/null
+++ b/msvc/missing.c
@@ -0,0 +1,80 @@
+/*
+ * Source file for missing WinCE functionality
+ * Copyright © 2012 RealVNC Ltd.
+ *
+ * This library 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.
+ *
+ * This library 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 library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "missing.h"
+
+#include <config.h>
+#include <libusbi.h>
+
+#include <windows.h>
+
+// The registry path to store environment variables
+#define ENVIRONMENT_REG_PATH _T("Software\\libusb\\environment")
+
+/* Workaround getenv not being available on WinCE.
+ * Instead look in HKLM\Software\libusb\environment */
+char *getenv(const char *name)
+{
+	static char value[MAX_PATH];
+	TCHAR wValue[MAX_PATH];
+	WCHAR wName[MAX_PATH];
+	DWORD dwType, dwData;
+	HKEY hkey;
+	LONG rc;
+
+	if (!name)
+		return NULL;
+
+	if (MultiByteToWideChar(CP_UTF8, 0, name, -1, wName, MAX_PATH) <= 0) {
+		usbi_dbg("Failed to convert environment variable name to wide string");
+		return NULL;
+	}
+	wName[MAX_PATH - 1] = 0; // Be sure it's NUL terminated
+
+	rc = RegOpenKeyEx(HKEY_LOCAL_MACHINE, ENVIRONMENT_REG_PATH, 0, KEY_QUERY_VALUE, &hkey);
+	if (rc != ERROR_SUCCESS) {
+		usbi_dbg("Failed to open registry key for getenv with error %d", rc);
+		return NULL;
+	}
+
+	// Attempt to read the key
+	dwData = sizeof(wValue);
+	rc = RegQueryValueEx(hkey, wName, NULL, &dwType,
+		(LPBYTE)&wValue, &dwData);
+	RegCloseKey(hkey);
+	if (rc != ERROR_SUCCESS) {
+		usbi_dbg("Failed to read registry key value for getenv with error %d", rc);
+		return NULL;
+	}
+	if (dwType != REG_SZ) {
+		usbi_dbg("Registry value was of type %d instead of REG_SZ", dwType);
+		return NULL;
+	}
+
+	// Success in reading the key, convert from WCHAR to char
+	if (WideCharToMultiByte(CP_UTF8, 0,
+			wValue, dwData / sizeof(*wValue),
+			value, MAX_PATH,
+			NULL, NULL) <= 0) {
+		usbi_dbg("Failed to convert environment variable value to narrow string");
+		return NULL;
+	}
+	value[MAX_PATH - 1] = 0; // Be sure it's NUL terminated
+	return value;
+}
diff --git a/msvc/missing.h b/msvc/missing.h
new file mode 100644
index 0000000..7846976
--- /dev/null
+++ b/msvc/missing.h
@@ -0,0 +1,29 @@
+/*
+ * Header file for missing WinCE functionality
+ * Copyright © 2012 RealVNC Ltd.
+ *
+ * This library 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.
+ *
+ * This library 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 library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef MISSING_H
+#define MISSING_H
+
+/* Windows CE doesn't have any APIs to query environment variables.
+ *
+ * This contains a registry based implementation of getenv.
+ */
+char *getenv(const char *name);
+
+#endif