forked from osmocom/wireshark
79836fa23a
Move error handling and argument quoting routines from capchild to wsutil, as those methods will be used by extcap_spawn as well. Change-Id: I2c4515fefd5aecad317fcdaefa721734288f792c Reviewed-on: https://code.wireshark.org/review/16123 Petri-Dish: Roland Knall <rknall@gmail.com> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: João Valverde <j@v6e.pt> Reviewed-by: Roland Knall <rknall@gmail.com>
176 lines
5.4 KiB
C
176 lines
5.4 KiB
C
/* win32-utils.c
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* Win32 utility routines
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 2006 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "win32-utils.h"
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/* Quote the argument element if necessary, so that it will get
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* reconstructed correctly in the C runtime startup code. Note that
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* the unquoting algorithm in the C runtime is really weird, and
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* rather different than what Unix shells do. See stdargv.c in the C
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* runtime sources (in the Platform SDK, in src/crt).
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*
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* Stolen from GLib's protect_argv(), an internal routine that quotes
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* string in an argument list so that they arguments will be handled
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* correctly in the command-line string passed to CreateProcess()
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* if that string is constructed by gluing those strings together.
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*/
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gchar *
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protect_arg (const gchar *argv)
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{
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gchar *new_arg;
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const gchar *p = argv;
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gchar *q;
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gint len = 0;
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gboolean need_dblquotes = FALSE;
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while (*p) {
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if (*p == ' ' || *p == '\t')
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need_dblquotes = TRUE;
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else if (*p == '"')
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len++;
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else if (*p == '\\') {
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const gchar *pp = p;
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while (*pp && *pp == '\\')
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pp++;
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if (*pp == '"')
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len++;
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}
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len++;
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p++;
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}
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q = new_arg = g_malloc (len + need_dblquotes*2 + 1);
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p = argv;
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if (need_dblquotes)
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*q++ = '"';
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while (*p) {
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if (*p == '"')
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*q++ = '\\';
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else if (*p == '\\') {
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const gchar *pp = p;
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while (*pp && *pp == '\\')
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pp++;
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if (*pp == '"')
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*q++ = '\\';
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}
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*q++ = *p;
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p++;
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}
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if (need_dblquotes)
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*q++ = '"';
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*q++ = '\0';
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return new_arg;
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}
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/*
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* Generate a string for a Win32 error.
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*/
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#define ERRBUF_SIZE 1024
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const char *
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win32strerror(DWORD error)
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{
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static char errbuf[ERRBUF_SIZE+1];
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size_t errlen;
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char *p;
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FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
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NULL, error, 0, errbuf, ERRBUF_SIZE, NULL);
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/*
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* "FormatMessage()" "helpfully" sticks CR/LF at the end of the
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* message. Get rid of it.
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*/
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errlen = strlen(errbuf);
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if (errlen >= 2) {
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errbuf[errlen - 1] = '\0';
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errbuf[errlen - 2] = '\0';
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}
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p = strchr(errbuf, '\0');
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g_snprintf(p, (gulong)(sizeof errbuf - (p-errbuf)), " (%lu)", error);
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return errbuf;
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}
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/*
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* Generate a string for a Win32 exception code.
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*/
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const char *
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win32strexception(DWORD exception)
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{
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static char errbuf[ERRBUF_SIZE+1];
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static const struct exception_msg {
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int code;
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char *msg;
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} exceptions[] = {
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{ EXCEPTION_ACCESS_VIOLATION, "Access violation" },
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{ EXCEPTION_ARRAY_BOUNDS_EXCEEDED, "Array bounds exceeded" },
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{ EXCEPTION_BREAKPOINT, "Breakpoint" },
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{ EXCEPTION_DATATYPE_MISALIGNMENT, "Data type misalignment" },
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{ EXCEPTION_FLT_DENORMAL_OPERAND, "Denormal floating-point operand" },
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{ EXCEPTION_FLT_DIVIDE_BY_ZERO, "Floating-point divide by zero" },
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{ EXCEPTION_FLT_INEXACT_RESULT, "Floating-point inexact result" },
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{ EXCEPTION_FLT_INVALID_OPERATION, "Invalid floating-point operation" },
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{ EXCEPTION_FLT_OVERFLOW, "Floating-point overflow" },
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{ EXCEPTION_FLT_STACK_CHECK, "Floating-point stack check" },
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{ EXCEPTION_FLT_UNDERFLOW, "Floating-point underflow" },
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{ EXCEPTION_GUARD_PAGE, "Guard page violation" },
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{ EXCEPTION_ILLEGAL_INSTRUCTION, "Illegal instruction" },
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{ EXCEPTION_IN_PAGE_ERROR, "Page-in error" },
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{ EXCEPTION_INT_DIVIDE_BY_ZERO, "Integer divide by zero" },
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{ EXCEPTION_INT_OVERFLOW, "Integer overflow" },
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{ EXCEPTION_INVALID_DISPOSITION, "Invalid disposition" },
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{ EXCEPTION_INVALID_HANDLE, "Invalid handle" },
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{ EXCEPTION_NONCONTINUABLE_EXCEPTION, "Non-continuable exception" },
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{ EXCEPTION_PRIV_INSTRUCTION, "Privileged instruction" },
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{ EXCEPTION_SINGLE_STEP, "Single-step complete" },
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{ EXCEPTION_STACK_OVERFLOW, "Stack overflow" },
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{ 0, NULL }
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};
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#define N_EXCEPTIONS (sizeof exceptions / sizeof exceptions[0])
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int i;
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for (i = 0; i < N_EXCEPTIONS; i++) {
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if (exceptions[i].code == exception)
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return exceptions[i].msg;
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}
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g_snprintf(errbuf, (gulong)sizeof errbuf, "Exception 0x%08x", exception);
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return errbuf;
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local Variables:
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* c-basic-offset: 2
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=2 tabstop=8 expandtab:
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* :indentSize=2:tabSize=8:noTabs=true:
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*/
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