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/* win32-utils.c
* Win32 utility routines
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 2006 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include "win32-utils.h"
/* Quote the argument element if necessary, so that it will get
* reconstructed correctly in the C runtime startup code. Note that
* the unquoting algorithm in the C runtime is really weird, and
* rather different than what Unix shells do. See stdargv.c in the C
* runtime sources (in the Platform SDK, in src/crt).
*
* Stolen from GLib's protect_argv(), an internal routine that quotes
* string in an argument list so that they arguments will be handled
* correctly in the command-line string passed to CreateProcess()
* if that string is constructed by gluing those strings together.
*/
gchar *
protect_arg (const gchar *argv)
{
gchar *new_arg;
const gchar *p = argv;
gchar *q;
gint len = 0;
gboolean need_dblquotes = FALSE;
while (*p) {
if (*p == ' ' || *p == '\t')
need_dblquotes = TRUE;
else if (*p == '"')
len++;
else if (*p == '\\') {
const gchar *pp = p;
while (*pp && *pp == '\\')
pp++;
if (*pp == '"')
len++;
}
len++;
p++;
}
q = new_arg = g_malloc (len + need_dblquotes*2 + 1);
p = argv;
if (need_dblquotes)
*q++ = '"';
while (*p) {
if (*p == '"')
*q++ = '\\';
else if (*p == '\\') {
const gchar *pp = p;
while (*pp && *pp == '\\')
pp++;
if (*pp == '"')
*q++ = '\\';
}
*q++ = *p;
p++;
}
if (need_dblquotes)
*q++ = '"';
*q++ = '\0';
return new_arg;
}
/*
* Generate a string for a Win32 error.
*/
#define ERRBUF_SIZE 1024
const char *
win32strerror(DWORD error)
{
static char errbuf[ERRBUF_SIZE+1];
size_t errlen;
char *p;
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, error, 0, errbuf, ERRBUF_SIZE, NULL);
/*
* "FormatMessage()" "helpfully" sticks CR/LF at the end of the
* message. Get rid of it.
*/
errlen = strlen(errbuf);
if (errlen >= 2) {
errbuf[errlen - 1] = '\0';
errbuf[errlen - 2] = '\0';
}
p = strchr(errbuf, '\0');
g_snprintf(p, (gulong)(sizeof errbuf - (p-errbuf)), " (%lu)", error);
return errbuf;
}
/*
* Generate a string for a Win32 exception code.
*/
const char *
win32strexception(DWORD exception)
{
static char errbuf[ERRBUF_SIZE+1];
static const struct exception_msg {
int code;
char *msg;
} exceptions[] = {
{ EXCEPTION_ACCESS_VIOLATION, "Access violation" },
{ EXCEPTION_ARRAY_BOUNDS_EXCEEDED, "Array bounds exceeded" },
{ EXCEPTION_BREAKPOINT, "Breakpoint" },
{ EXCEPTION_DATATYPE_MISALIGNMENT, "Data type misalignment" },
{ EXCEPTION_FLT_DENORMAL_OPERAND, "Denormal floating-point operand" },
{ EXCEPTION_FLT_DIVIDE_BY_ZERO, "Floating-point divide by zero" },
{ EXCEPTION_FLT_INEXACT_RESULT, "Floating-point inexact result" },
{ EXCEPTION_FLT_INVALID_OPERATION, "Invalid floating-point operation" },
{ EXCEPTION_FLT_OVERFLOW, "Floating-point overflow" },
{ EXCEPTION_FLT_STACK_CHECK, "Floating-point stack check" },
{ EXCEPTION_FLT_UNDERFLOW, "Floating-point underflow" },
{ EXCEPTION_GUARD_PAGE, "Guard page violation" },
{ EXCEPTION_ILLEGAL_INSTRUCTION, "Illegal instruction" },
{ EXCEPTION_IN_PAGE_ERROR, "Page-in error" },
{ EXCEPTION_INT_DIVIDE_BY_ZERO, "Integer divide by zero" },
{ EXCEPTION_INT_OVERFLOW, "Integer overflow" },
{ EXCEPTION_INVALID_DISPOSITION, "Invalid disposition" },
{ EXCEPTION_INVALID_HANDLE, "Invalid handle" },
{ EXCEPTION_NONCONTINUABLE_EXCEPTION, "Non-continuable exception" },
{ EXCEPTION_PRIV_INSTRUCTION, "Privileged instruction" },
{ EXCEPTION_SINGLE_STEP, "Single-step complete" },
{ EXCEPTION_STACK_OVERFLOW, "Stack overflow" },
{ 0, NULL }
};
#define N_EXCEPTIONS (sizeof exceptions / sizeof exceptions[0])
int i;
for (i = 0; i < N_EXCEPTIONS; i++) {
if (exceptions[i].code == exception)
return exceptions[i].msg;
}
g_snprintf(errbuf, (gulong)sizeof errbuf, "Exception 0x%08x", exception);
return errbuf;
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/
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