From 79836fa23ae275466fd7414967bd17e0f629c888 Mon Sep 17 00:00:00 2001 From: Roland Knall Date: Thu, 23 Jun 2016 10:43:30 +0200 Subject: wsutil: Move Win32 helper routines from capchild MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Tested-by: Petri Dish Buildbot Reviewed-by: João Valverde Reviewed-by: Roland Knall --- wsutil/win32-utils.c | 175 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 175 insertions(+) create mode 100644 wsutil/win32-utils.c (limited to 'wsutil/win32-utils.c') diff --git a/wsutil/win32-utils.c b/wsutil/win32-utils.c new file mode 100644 index 0000000000..fdc2be3b2d --- /dev/null +++ b/wsutil/win32-utils.c @@ -0,0 +1,175 @@ +/* win32-utils.c + * Win32 utility routines + * + * Wireshark - Network traffic analyzer + * By Gerald Combs + * Copyright 2006 Gerald Combs + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU 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. + */ + +#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: + */ -- cgit v1.2.1