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// Copyright (C) 2005 Jon Bright <jon@siliconcircus.com>
//
// This program is made available under the GNU GPL version 2.0 or
// greater. See the accompanying file COPYING for details.
//
// This program is distributed WITHOUT ANY WARRANTY; without even the
// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
// PURPOSE.
#include "base.hh"
#include <iostream>
#include <sstream>
#include <windows.h>
#include <cstring>
#include "sanity.hh"
#include "platform.hh"
static std::string munge_inner_argument(const char* arg)
{
std::string result;
// I don't think Windows allows us to escape a backslash properly.
result += '"';
for (char const * c = arg; *c; ++c)
{
if (*c == '"' /* || *c == '\\' */)
result += '\\';
result += *c;
}
result += '"';
return result;
}
static std::string munge_argument(const char* arg)
{
std::string result;
// handle DOS-style '/file:c:\path to\file.txt' by splitting at the colon
// and handling the last part as a standard argument, then reassembling
// for the cmdline.
if (arg[0] == '/') {
const char* dos_cmd = std::strchr(arg, ':');
if (dos_cmd != 0) {
result += std::string(arg, dos_cmd - arg + 1);
result += munge_inner_argument(dos_cmd + 1);
} else
result += arg;
return result;
}
if (*arg == 0)
return "\"\"";
else
return munge_inner_argument(arg);
}
std::string munge_argv_into_cmdline(const char* const argv[])
{
std::string cmdline;
for (int i = 0; argv[i]; ++i) {
cmdline += munge_argument(argv[i]);
cmdline += " ";
}
return cmdline;
}
int existsonpath(const char *exe)
{
if (SearchPath(NULL, exe, ".exe", 0, NULL, NULL)==0)
return -1;
return 0;
}
bool is_executable(const char *path)
{
return false; /* Basically meaningless on win32 */
}
int set_executable(const char *path)
{
return 0; /* Basically meaningless on win32 */
}
int clear_executable(const char *path)
{
return 0; /* Basically meaningless on win32 */
}
pid_t process_spawn(const char * const argv[])
{
char *realexe,*filepart;
int realexelen;
std::string cmd,tmp1,tmp2;
std::string::iterator it;
STARTUPINFO si;
PROCESS_INFORMATION pi;
realexelen = strlen(argv[0])+1+MAX_PATH;
realexe = (char*)malloc(realexelen);
if (realexe==NULL) return 0;
L(FL("searching for exe: %s\n") % argv[0]);
if (SearchPath(NULL, argv[0], ".exe", realexelen, realexe, &filepart)==0)
{
os_err_t errnum = GetLastError();
L(FL("SearchPath failed, err=%s (%d)\n") % os_strerror(errnum) % errnum);
free(realexe);
return -1;
}
cmd = munge_argv_into_cmdline(argv);
L(FL("spawning command: '%s' '%s'\n") % realexe % cmd);
memset(&si, 0, sizeof(si));
si.cb = sizeof(STARTUPINFO);
/* We don't need to set any of the STARTUPINFO members */
std::cout.flush();
if (CreateProcess(realexe, (char*)cmd.c_str(), NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi)==0)
{
os_err_t errnum = GetLastError();
L(FL("CreateProcess failed, err=%s (%d)\n") % os_strerror(errnum) % errnum);
free(realexe);
return -1;
}
free(realexe);
CloseHandle(pi.hThread);
return (pid_t)pi.hProcess;
}
struct redir
{
struct bad_redir {};
HANDLE saved;
int what;
redir(int which, char const * file);
~redir();
};
redir::redir(int which, char const * filename)
: what(which)
{
if (!filename || *filename == '\0')
{
what = -1;
return;
}
HANDLE file;
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = 0;
sa.bInheritHandle = true;
file = CreateFile(filename,
(which==0?GENERIC_READ:GENERIC_WRITE),
FILE_SHARE_READ,
&sa,
(which==0?OPEN_EXISTING:CREATE_ALWAYS),
FILE_ATTRIBUTE_NORMAL,
NULL);
switch(which)
{
case 0:
saved = GetStdHandle(STD_INPUT_HANDLE);
SetStdHandle(STD_INPUT_HANDLE, file);
break;
case 1:
saved = GetStdHandle(STD_OUTPUT_HANDLE);
SetStdHandle(STD_OUTPUT_HANDLE, file);
break;
case 2:
saved = GetStdHandle(STD_ERROR_HANDLE);
SetStdHandle(STD_ERROR_HANDLE, file);
break;
}
}
redir::~redir()
{
switch(what)
{
case 0:
CloseHandle(GetStdHandle(STD_INPUT_HANDLE));
SetStdHandle(STD_INPUT_HANDLE, saved);
break;
case 1:
CloseHandle(GetStdHandle(STD_OUTPUT_HANDLE));
SetStdHandle(STD_OUTPUT_HANDLE, saved);
break;
case 2:
CloseHandle(GetStdHandle(STD_ERROR_HANDLE));
SetStdHandle(STD_ERROR_HANDLE, saved);
break;
}
}
pid_t process_spawn_redirected(char const * in,
char const * out,
char const * err,
char const * const argv[])
{
try
{
redir i(0, in);
redir o(1, out);
redir e(2, err);
return process_spawn(argv);
}
catch (redir::bad_redir)
{
return -1;
}
}
pid_t process_spawn_pipe(char const * const argv[], FILE** in, FILE** out)
{
// XXX: not implemented on Win32 yet
return -1;
}
int process_wait(pid_t pid, int *res, int timeout)
{
HANDLE hProcess = (HANDLE)pid;
DWORD time = INFINITE;
if (timeout != -1)
time = timeout * 1000;
DWORD r = WaitForSingleObject(hProcess, time);
if (r == WAIT_TIMEOUT)
return -1;
if (r == WAIT_FAILED)
{
CloseHandle(hProcess); /* May well not work, but won't harm */
return -1;
}
if (GetExitCodeProcess(hProcess, (DWORD*)res)==0)
*res = -1;
CloseHandle(hProcess); /* Let the process die */
return 0;
}
int process_kill(pid_t pid, int signal)
{
HANDLE hProcess = (HANDLE)pid;
if (TerminateProcess(hProcess, 1)==0)
return -1;
return 0;
}
int process_sleep(unsigned int seconds)
{
Sleep(seconds*1000);
return 0;
}
pid_t get_process_id()
{
return GetCurrentProcessId();
}
// Local Variables:
// mode: C++
// fill-column: 76
// c-file-style: "gnu"
// indent-tabs-mode: nil
// End:
// vim: et:sw=2:sts=2:ts=2:cino=>2s,{s,\:s,+s,t0,g0,^-2,e-2,n-2,p2s,(0,=s:
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