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/*********************************************************
* Copyright (C) 2002 VMware, Inc. All rights reserved.
*
* This program 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 version 2.1 and no 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 Lesser GNU General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*********************************************************/
/*
* rpcTool.c --
*
* Simple program to drive the guest RPC library.
*/
#ifndef _WIN32
#include "sigPosixRegs.h"
#include <errno.h>
#include <stdint.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "vmware.h"
#include "rpcout.h"
#include "str.h"
#include "backdoor_def.h"
#define NOT_VMWARE_ERROR "Failed sending message to VMware.\n"
int RpcToolCommand(int argc, char *argv[]);
#ifndef _WIN32
static Bool SetSignalHandler(int sig,
void (*handler)(int, siginfo_t *, void *),
Bool reset);
#endif
void
PrintUsage(void)
{
fprintf(stderr, "rpctool syntax:\n\n");
fprintf(stderr, " rpctool <text>\n\n");
}
#ifdef _WIN32
static Bool
ExceptionIsBackdoor(PEXCEPTION_POINTERS excInfo)
{
#ifdef _WIN64
uint32 magic = excInfo->ContextRecord->Rax & 0xffffffff;
uint16 port = excInfo->ContextRecord->Rdx & 0xffff;
#else
uint32 magic = excInfo->ContextRecord->Eax & 0xffffffff;
uint16 port = excInfo->ContextRecord->Edx & 0xffff;
#endif
return (magic == BDOOR_MAGIC &&
(port == BDOOR_PORT || port == BDOORHB_PORT));
}
#else
static void
SignalHandler(int sig,
siginfo_t *sip,
void *data)
{
ucontext_t *ucp = (ucontext_t *) data;
uint16 port = SC_EDX(ucp) & 0xffff;
uint32 magic = SC_EAX(ucp) & 0xffffffff;
if (magic == BDOOR_MAGIC &&
(port == BDOORHB_PORT || port == BDOOR_PORT)) {
fprintf(stderr, NOT_VMWARE_ERROR);
exit(1);
} else {
SetSignalHandler(sig, NULL, TRUE);
raise(sig);
}
}
static Bool
SetSignalHandler(int sig,
void (*handler)(int, siginfo_t *, void *),
Bool reset)
{
static struct sigaction old;
if (reset) {
struct sigaction tmp = old;
memset(&old, 0, sizeof old);
return sigaction(sig, &tmp, NULL) ? FALSE : TRUE;
} else {
struct sigaction new;
/* Setup the handler and flags to get exception information. */
new.sa_sigaction = handler;
new.sa_flags = SA_SIGINFO;
/* Block all signals when handling this. */
if (sigfillset(&new.sa_mask) == -1) {
fprintf(stderr, "Unable to initialize a signal set: %s.\n\n",
strerror(errno));
return FALSE;
}
if (sigaction(sig, &new, &old) == -1) {
fprintf(stderr, "Unable to initialize a signal handler: %s.\n\n",
strerror(errno));
return FALSE;
}
}
return TRUE;
}
#endif
int
main(int argc, char *argv[])
{
int ret = 1;
if (argc <= 1) {
PrintUsage();
return 1;
}
argc--;
argv++;
#ifdef _WIN32
__try {
ret = RpcToolCommand(argc, argv);
} __except(ExceptionIsBackdoor(GetExceptionInformation()) ?
EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH) {
fprintf(stderr, NOT_VMWARE_ERROR);
return 1;
}
#else
#ifdef __FreeBSD__
# define ERROR_SIGNAL SIGBUS
#else
# define ERROR_SIGNAL SIGSEGV
#endif
if (SetSignalHandler(ERROR_SIGNAL, SignalHandler, FALSE)) {
ret = RpcToolCommand(argc, argv);
}
SetSignalHandler(ERROR_SIGNAL, NULL, TRUE);
#endif
return ret;
}
int
RpcToolCommand(int argc, char *argv[])
{
char *result = NULL;
Bool status = FALSE;
status = RpcOut_sendOne(&result, NULL, "%s", argv[0]);
if (!status) {
fprintf(stderr, "%s\n", result ? result : "NULL");
} else {
printf("%s\n", result);
}
free(result);
return (status == TRUE ? 0 : 1);
}
void
Panic(const char *fmt, ...)
{
va_list args;
static char buf[1024];
va_start(args, fmt);
Str_Vsnprintf(buf, sizeof buf, fmt, args);
va_end(args);
fputs(buf, stderr);
abort();
}
void
Debug(char *fmt, ...)
{
#if defined(VMX86_DEBUG) || defined(VMX86_DEVEL)
va_list args;
char *buf;
va_start(args, fmt);
buf = Str_Vasprintf(NULL, fmt, args);
va_end(args);
fprintf(stderr, "rpctool: %s\n", buf);
fflush(stderr);
#else
/* No output in non-debug/non-developer builds */
#endif
}
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