src/common/win_process.c

#ifndef lint
static char RCSid[]="$Id: win_process.c,v 3.8 2013/11/08 18:08:07 greg Exp $";
#endif
/*
 * Routines to communicate with separate process via dual pipes.
 * Windows version.
 *
 * External symbols declared in standard.h
 */

#include "copyright.h"

#include <stdio.h>
#define STRICT
#include <windows.h> /* typedefs */
#include <io.h>      /* _open_osfhandle */
#include <fcntl.h>   /* _O_XXX */

#include "rterror.h"
#include "rtio.h"
#include "rtprocess.h"


int
win_nice(int inc) /* simple nice(2) replacement for Windows */
{
        /* We don't have much granularity available: IDLE_PRIORITY_CLASS
           will run whenever no other higher priority process is running */
        if (inc > 0) {
                return (int)!SetPriorityClass(GetCurrentProcess(), IDLE_PRIORITY_CLASS);
        }
        return 0;
}


/*
    Safely terminate a process by creating a remote thread
    in the process that calls ExitProcess.
        As presented by Andrew Tucker in Windows Developer Magazine.
*/
#ifndef OBSOLETE_WINDOWS  /* won't work on Win 9X/ME/CE. */
BOOL SafeTerminateProcess(HANDLE hProcess, UINT uExitCode)
{
        DWORD dwTID, dwCode, dwErr = 0;
        HANDLE hProcessDup = INVALID_HANDLE_VALUE;
        HANDLE hRT = NULL;
        HINSTANCE hKernel = GetModuleHandle("Kernel32");
        BOOL bSuccess = FALSE;

        BOOL bDup = DuplicateHandle(GetCurrentProcess(), 
                        hProcess, 
                        GetCurrentProcess(), 
                        &hProcessDup, 
                        PROCESS_ALL_ACCESS, 
                        FALSE, 
                        0);
        /* Detect the special case where the process is already dead... */
        if ( GetExitCodeProcess((bDup) ? hProcessDup : hProcess, &dwCode) && 
                        (dwCode == STILL_ACTIVE) ) {
                FARPROC pfnExitProc;
                pfnExitProc = GetProcAddress(hKernel, "ExitProcess");
                hRT = CreateRemoteThread((bDup) ? hProcessDup : hProcess, 
                                NULL, 
                                0, 
                                (LPTHREAD_START_ROUTINE)pfnExitProc,
                                (PVOID)uExitCode, 0, &dwTID);
                if ( hRT == NULL ) dwErr = GetLastError();
        } else {
                dwErr = ERROR_PROCESS_ABORTED;
        }
        if ( hRT ) {
                /* Must wait process to terminate to guarantee that it has exited... */
                WaitForSingleObject((bDup) ? hProcessDup : hProcess, INFINITE);
                CloseHandle(hRT);
                bSuccess = TRUE;
        }
        if ( bDup ) CloseHandle(hProcessDup);
        if ( !bSuccess ) SetLastError(dwErr);
        return bSuccess;
}
#endif


static int
start_process(SUBPROC *proc, char *cmdstr)
{
        BOOL res;
        int Pflags = 0;
        SECURITY_ATTRIBUTES SAttrs;
        STARTUPINFO SInfo;
        PROCESS_INFORMATION PInfo;
        /* welcome to the world of resource handles */
        HANDLE hToChildRead = NULL;
        HANDLE hToChildWrite = NULL;
        HANDLE hFromChildRead = NULL;
        HANDLE hFromChildWrite = NULL;
        HANDLE hRead = NULL, hWrite = NULL;
        HANDLE hStdIn, hStdOut, hStdErr;
        HANDLE hCurProc;

        /* get process and standard stream handles */
        hCurProc = GetCurrentProcess();
        hStdIn = GetStdHandle(STD_INPUT_HANDLE);
        hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
        hStdErr = GetStdHandle(STD_ERROR_HANDLE);
        
        /* the remote pipe handles must be inheritable */
        SAttrs.bInheritHandle = 1;
        SAttrs.lpSecurityDescriptor = NULL;
        SAttrs.nLength = sizeof(SECURITY_ATTRIBUTES);

        /* make pipe, assign to stdout */
        /* we'll check for errors after CreateProcess()...*/
        res = CreatePipe(&hFromChildRead, &hFromChildWrite, &SAttrs, 0);
        res = SetStdHandle(STD_OUTPUT_HANDLE, hFromChildWrite);
        /* create non-inheritable dup of local end */
        res = DuplicateHandle(hCurProc, hFromChildRead, hCurProc, &hRead,
                        0, FALSE, DUPLICATE_SAME_ACCESS);
        CloseHandle(hFromChildRead); hFromChildRead = NULL;

        res = CreatePipe(&hToChildRead, &hToChildWrite, &SAttrs, 0);
        res = SetStdHandle(STD_INPUT_HANDLE, hToChildRead);
        res = DuplicateHandle(hCurProc, hToChildWrite, hCurProc, &hWrite,
                        0, FALSE, DUPLICATE_SAME_ACCESS);
        CloseHandle(hToChildWrite); hToChildWrite = NULL;

        CloseHandle(hCurProc); hCurProc = NULL;

        /* do some bookkeeping for Windows... */
        SInfo.cb = sizeof(STARTUPINFO);
        SInfo.lpReserved = NULL;
        SInfo.lpDesktop = NULL;
        SInfo.lpTitle = NULL;
        SInfo.cbReserved2 = 0;
        SInfo.lpReserved2 = NULL;
        /* don't open a console automatically, pass handles */
        SInfo.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
        SInfo.wShowWindow = SW_HIDE;
        SInfo.hStdInput = hToChildRead;
        SInfo.hStdOutput = hFromChildWrite;
        SInfo.hStdError = hStdErr; /* reuse original stderr */
        
        res = CreateProcess(NULL, /* command name */
                cmdstr, /* full command line */
                NULL,    /* default process attributes */
                NULL,    /* default security attributes */
                1,       /* inherit handles (pass doesn't work reliably) */
                Pflags,  /* process flags */
                NULL,    /* no new environment */
                NULL,    /* stay in current directory */
                &SInfo,
                &PInfo
                );
        /* reset stdin/stdout in any case */
        SetStdHandle(STD_OUTPUT_HANDLE, hStdOut);
        SetStdHandle(STD_INPUT_HANDLE, hStdIn);
        /* Oops... */
        if(res == 0) {
                char es[128];
                _snprintf(es, sizeof(es),
                                "Error creating process (%d)\n", GetLastError());
                eputs(es);
                goto error;
        }
        /* close stuff we don't need */
        CloseHandle(PInfo.hThread);
        CloseHandle(hFromChildWrite); hFromChildWrite = NULL;
        CloseHandle(hToChildRead); hToChildRead = NULL;
        /* get the file descriptors */
        proc->r = _open_osfhandle((long)hRead, _O_RDONLY|_O_BINARY);
        proc->w = _open_osfhandle((long)hWrite, _O_APPEND|_O_BINARY);
        proc->pid = PInfo.dwProcessId;
        proc->running = 1;
        CloseHandle(hCurProc);
        /* Windows doesn't tell us the actual buffer size */
        return PIPE_BUF;

error: /* cleanup */
        if(PInfo.hThread) CloseHandle(PInfo.hThread);
        if(hToChildRead) CloseHandle(hToChildRead);
        if(hToChildWrite) CloseHandle(hToChildWrite);
        if(hFromChildRead) CloseHandle(hFromChildRead);
        if(hFromChildWrite) CloseHandle(hFromChildWrite);
        if(hRead) CloseHandle(hRead);
        if(hWrite) CloseHandle(hWrite);
        if(hCurProc) CloseHandle(hCurProc);
        proc->running = 0;
        return -1;
        /* There... Are we happy now? */
}


static int         /* copied size or -1 on error */
wordncopy(         /* copy (quoted) src to dest. */

char * dest,
char * src,
int dlen,
int insert_space,  /* prepend a space  */
int force_dq       /* turn 'src' into "dest" (for Win command line) */
)
{
        int slen;
        int pos = 0;

        slen = strlen(src);
        if (insert_space) {
                if (1 >= dlen) return -1;
                dest[pos++] = ' ';
        }
        if (strpbrk(src, " \f\n\r\t\v")) {
                if (force_dq && src[0] == '\'' && src[slen-1] == '\'') {
                        if (slen + pos + 1 > dlen) return -1;
                        dest[pos++] = '"';
                        strncpy(dest + pos, src + 1, slen -2);
                        pos += slen - 2;
                        dest[pos++] = '"';
                } else if (src[0] == '"' && src[slen-1] == '"') {
                        if (slen + pos + 1 > dlen) return -1;
                        strncpy(dest + pos, src, slen);
                        pos += slen;
                } else {
                        if (slen + pos + 3 > dlen) return -1;
                        dest[pos++] = '"';
                        strncpy(dest + pos, src, slen);
                        pos += slen;
                        dest[pos++] = '"';
                }
        } else {
                if (slen + pos + 1 > dlen) return -1;
                strncpy(dest + pos, src, slen);
                pos += slen;
        }
        dest[pos] = '\0';
        return pos;
}       


static char *
quoted_cmdline(  /* compose command line for StartProcess() as static string */

char *cmdpath,  /* full path to executable */
char *sl[]       /* list of arguments */
)
{
        static char *cmdstr;
        static int clen;
        char *newcs;
        int newlen, pos, res, i;

        newlen = strlen(cmdpath) + 3; /* allow two quotes plus the final \0 */
        for (i = 0; sl[i] != NULL; i++) {
                newlen += strlen(sl[i]) + 3; /* allow two quotes and a space */
        }
        if (cmdstr == NULL) {
                cmdstr = (char *) malloc(newlen);
                if (cmdstr == NULL) return NULL;
        } else if (newlen > clen) {
                newcs = (char *) realloc(cmdstr, newlen);
                if (newcs == NULL) return NULL;
                cmdstr = newcs;
        }
        clen = newlen;
        pos = wordncopy(cmdstr, cmdpath, clen, 0, 1);
        if (pos < 0) return NULL;
        for (i = 0; sl[i] != NULL; i++) {
                res = wordncopy(cmdstr + pos, sl[i], clen - pos, 1, 1);
                if (res < 0) return NULL;
                pos += res;
        }
        return cmdstr;
}


int
open_process(SUBPROC *proc, char *av[])
{
        char *cmdpath;
        char *cmdstr;

        if (av == NULL || av[0] == NULL) {
                fputs("Illegal call to open_process()!\n", stderr);
                return -1;
        }
        proc->running = 0;
        if (av == NULL) { return -1; }
        cmdpath = getpath(av[0], getenv("PATH"), X_OK);
        cmdstr = quoted_cmdline(cmdpath, av+1);
        if (cmdstr == NULL) { return 0; }
        return start_process(proc, cmdstr);
}


int win_kill(RT_PID pid, int sig) /* we ignore sig... */
{
        HANDLE hProc;

        hProc = OpenProcess(SYNCHRONIZE|PROCESS_TERMINATE, FALSE, pid);
        /*  it looks like we want to ignore errors here */
        if(hProc != NULL) {
#ifdef OBSOLETE_WINDOWS
#define KILL_TIMEOUT 10 * 1000 /* milliseconds */
                /* it might have some windows open... */
                EnumWindows((WNDENUMPROC)TerminateAppEnum, (LPARAM)pid);
                if(WaitForSingleObject(hProc, KILL_TIMEOUT)!=WAIT_OBJECT_0) {
                        /* No way to avoid dangling DLLs here. */
                        TerminateProcess(hProc, 0);
                }
#else
                SafeTerminateProcess(hProc, 0);
#endif
                /* WaitForSingleObject(hProc, 0); */
                /* not much use to wait on Windows */
                CloseHandle(hProc);
        }
        return 0; /* XXX we need to figure out more here... */
}


int
close_process(SUBPROC *proc) {
        int icres, ocres;
        DWORD pid;

        ocres = close(proc->w);
        icres = close(proc->r);
        pid = proc->pid;
        if(ocres != 0 || icres != 0) {
                /* something went wrong: enforce infanticide */
                /* other than that, it looks like we want to ignore errors here */
                if (proc->running) {
                        win_kill(pid, 0);
                }
        }
        proc->running = 0;
        return 0; /* XXX we need to figure out more here... */
}


#ifdef TEST_MODULE
int
main( int argc, char **argv )
{
        SUBPROC proc;
        FILE *inf, *outf;
        int res;
        char ret[1024];
        char *command[]= {"word", "gappy word", "\"quoted words\"", "'squoted words'", NULL};

    res = open_process(&proc, command)
        if (res == 0) {
                printf("open_process() failed with return value 0\n");
                return -1;
        }
        printf("process opened with return value: %d, pid: %d,  r: %d,  w: %d\n",
                        res, proc.pid, proc.r, proc.w);
        inf = fdopen(proc.r, "rb");
        outf = fdopen(proc.w, "wb");
        fprintf(outf,"0 0 0 0 1 0\n");
        fflush(outf);
        fgets(ret, sizeof(ret), inf);
        printf("%s\n",ret);
        close_process(&proc);
}
#endif

Revision:	3.9
Committed:	Wed Feb 12 00:15:40 2014 UTC (11 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad5R0, rad4R2, rad4R2P1, rad4R2P2
Changes since 3.8:	+3 -3 lines
Log Message:	Added binary flag to i/o descriptors (needed in this case?)
#	User	Rev	Content
1	schorsch	3.1	#ifndef lint
2	greg	3.9	static char RCSid[]="$Id: win_process.c,v 3.8 2013/11/08 18:08:07 greg Exp $";
3	schorsch	3.1	#endif
4			/*
5			* Routines to communicate with separate process via dual pipes.
6			* Windows version.
7			*
8			* External symbols declared in standard.h
9			*/
10
11			#include "copyright.h"
12
13			#include <stdio.h>
14			#define STRICT
15			#include <windows.h> /* typedefs */
16			#include <io.h> /* _open_osfhandle */
17			#include <fcntl.h> /* _O_XXX */
18
19	schorsch	3.3	#include "rterror.h"
20			#include "rtio.h"
21	schorsch	3.1	#include "rtprocess.h"
22
23
24	schorsch	3.4	int
25			win_nice(int inc) /* simple nice(2) replacement for Windows */
26			{
27			/* We don't have much granularity available: IDLE_PRIORITY_CLASS
28			will run whenever no other higher priority process is running */
29			if (inc > 0) {
30			return (int)!SetPriorityClass(GetCurrentProcess(), IDLE_PRIORITY_CLASS);
31			}
32			return 0;
33			}
34	schorsch	3.1
35
36			/*
37			Safely terminate a process by creating a remote thread
38			in the process that calls ExitProcess.
39			As presented by Andrew Tucker in Windows Developer Magazine.
40			*/
41			#ifndef OBSOLETE_WINDOWS /* won't work on Win 9X/ME/CE. */
42			BOOL SafeTerminateProcess(HANDLE hProcess, UINT uExitCode)
43			{
44			DWORD dwTID, dwCode, dwErr = 0;
45			HANDLE hProcessDup = INVALID_HANDLE_VALUE;
46			HANDLE hRT = NULL;
47			HINSTANCE hKernel = GetModuleHandle("Kernel32");
48			BOOL bSuccess = FALSE;
49
50			BOOL bDup = DuplicateHandle(GetCurrentProcess(),
51			hProcess,
52			GetCurrentProcess(),
53			&hProcessDup,
54			PROCESS_ALL_ACCESS,
55			FALSE,
56			0);
57			/* Detect the special case where the process is already dead... */
58			if ( GetExitCodeProcess((bDup) ? hProcessDup : hProcess, &dwCode) &&
59			(dwCode == STILL_ACTIVE) ) {
60			FARPROC pfnExitProc;
61			pfnExitProc = GetProcAddress(hKernel, "ExitProcess");
62			hRT = CreateRemoteThread((bDup) ? hProcessDup : hProcess,
63			NULL,
64			0,
65			(LPTHREAD_START_ROUTINE)pfnExitProc,
66			(PVOID)uExitCode, 0, &dwTID);
67			if ( hRT == NULL ) dwErr = GetLastError();
68			} else {
69			dwErr = ERROR_PROCESS_ABORTED;
70			}
71			if ( hRT ) {
72			/* Must wait process to terminate to guarantee that it has exited... */
73			WaitForSingleObject((bDup) ? hProcessDup : hProcess, INFINITE);
74			CloseHandle(hRT);
75			bSuccess = TRUE;
76			}
77			if ( bDup ) CloseHandle(hProcessDup);
78			if ( !bSuccess ) SetLastError(dwErr);
79			return bSuccess;
80			}
81			#endif
82
83
84			static int
85			start_process(SUBPROC proc, char cmdstr)
86			{
87			BOOL res;
88			int Pflags = 0;
89			SECURITY_ATTRIBUTES SAttrs;
90			STARTUPINFO SInfo;
91			PROCESS_INFORMATION PInfo;
92			/* welcome to the world of resource handles */
93			HANDLE hToChildRead = NULL;
94			HANDLE hToChildWrite = NULL;
95			HANDLE hFromChildRead = NULL;
96			HANDLE hFromChildWrite = NULL;
97			HANDLE hRead = NULL, hWrite = NULL;
98			HANDLE hStdIn, hStdOut, hStdErr;
99			HANDLE hCurProc;
100
101			/* get process and standard stream handles */
102			hCurProc = GetCurrentProcess();
103			hStdIn = GetStdHandle(STD_INPUT_HANDLE);
104			hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
105			hStdErr = GetStdHandle(STD_ERROR_HANDLE);
106
107			/* the remote pipe handles must be inheritable */
108			SAttrs.bInheritHandle = 1;
109			SAttrs.lpSecurityDescriptor = NULL;
110			SAttrs.nLength = sizeof(SECURITY_ATTRIBUTES);
111
112			/* make pipe, assign to stdout */
113			/* we'll check for errors after CreateProcess()...*/
114			res = CreatePipe(&hFromChildRead, &hFromChildWrite, &SAttrs, 0);
115			res = SetStdHandle(STD_OUTPUT_HANDLE, hFromChildWrite);
116			/* create non-inheritable dup of local end */
117			res = DuplicateHandle(hCurProc, hFromChildRead, hCurProc, &hRead,
118			0, FALSE, DUPLICATE_SAME_ACCESS);
119			CloseHandle(hFromChildRead); hFromChildRead = NULL;
120
121			res = CreatePipe(&hToChildRead, &hToChildWrite, &SAttrs, 0);
122			res = SetStdHandle(STD_INPUT_HANDLE, hToChildRead);
123			res = DuplicateHandle(hCurProc, hToChildWrite, hCurProc, &hWrite,
124			0, FALSE, DUPLICATE_SAME_ACCESS);
125			CloseHandle(hToChildWrite); hToChildWrite = NULL;
126
127			CloseHandle(hCurProc); hCurProc = NULL;
128
129			/* do some bookkeeping for Windows... */
130			SInfo.cb = sizeof(STARTUPINFO);
131			SInfo.lpReserved = NULL;
132			SInfo.lpDesktop = NULL;
133			SInfo.lpTitle = NULL;
134			SInfo.cbReserved2 = 0;
135			SInfo.lpReserved2 = NULL;
136			/* don't open a console automatically, pass handles */
137			SInfo.dwFlags = STARTF_USESHOWWINDOW \| STARTF_USESTDHANDLES;
138			SInfo.wShowWindow = SW_HIDE;
139			SInfo.hStdInput = hToChildRead;
140			SInfo.hStdOutput = hFromChildWrite;
141			SInfo.hStdError = hStdErr; /* reuse original stderr */
142
143			res = CreateProcess(NULL, /* command name */
144			cmdstr, /* full command line */
145			NULL, /* default process attributes */
146			NULL, /* default security attributes */
147			1, /* inherit handles (pass doesn't work reliably) */
148			Pflags, /* process flags */
149			NULL, /* no new environment */
150			NULL, /* stay in current directory */
151			&SInfo,
152			&PInfo
153			);
154			/* reset stdin/stdout in any case */
155			SetStdHandle(STD_OUTPUT_HANDLE, hStdOut);
156			SetStdHandle(STD_INPUT_HANDLE, hStdIn);
157			/* Oops... */
158			if(res == 0) {
159			char es[128];
160			_snprintf(es, sizeof(es),
161			"Error creating process (%d)\n", GetLastError());
162			eputs(es);
163			goto error;
164			}
165			/* close stuff we don't need */
166			CloseHandle(PInfo.hThread);
167			CloseHandle(hFromChildWrite); hFromChildWrite = NULL;
168			CloseHandle(hToChildRead); hToChildRead = NULL;
169			/* get the file descriptors */
170	greg	3.9	proc->r = _open_osfhandle((long)hRead, _O_RDONLY\|_O_BINARY);
171			proc->w = _open_osfhandle((long)hWrite, _O_APPEND\|_O_BINARY);
172	schorsch	3.1	proc->pid = PInfo.dwProcessId;
173			proc->running = 1;
174			CloseHandle(hCurProc);
175			/* Windows doesn't tell us the actual buffer size */
176			return PIPE_BUF;
177
178			error: /* cleanup */
179			if(PInfo.hThread) CloseHandle(PInfo.hThread);
180			if(hToChildRead) CloseHandle(hToChildRead);
181			if(hToChildWrite) CloseHandle(hToChildWrite);
182			if(hFromChildRead) CloseHandle(hFromChildRead);
183			if(hFromChildWrite) CloseHandle(hFromChildWrite);
184			if(hRead) CloseHandle(hRead);
185			if(hWrite) CloseHandle(hWrite);
186			if(hCurProc) CloseHandle(hCurProc);
187			proc->running = 0;
188	greg	3.7	return -1;
189	schorsch	3.1	/* There... Are we happy now? */
190			}
191
192
193			static int /* copied size or -1 on error */
194			wordncopy( /* copy (quoted) src to dest. */
195
196			char * dest,
197			char * src,
198			int dlen,
199			int insert_space, /* prepend a space */
200			int force_dq /* turn 'src' into "dest" (for Win command line) */
201			)
202			{
203			int slen;
204			int pos = 0;
205
206			slen = strlen(src);
207			if (insert_space) {
208			if (1 >= dlen) return -1;
209			dest[pos++] = ' ';
210			}
211			if (strpbrk(src, " \f\n\r\t\v")) {
212			if (force_dq && src[0] == '\'' && src[slen-1] == '\'') {
213			if (slen + pos + 1 > dlen) return -1;
214			dest[pos++] = '"';
215			strncpy(dest + pos, src + 1, slen -2);
216			pos += slen - 2;
217			dest[pos++] = '"';
218			} else if (src[0] == '"' && src[slen-1] == '"') {
219			if (slen + pos + 1 > dlen) return -1;
220			strncpy(dest + pos, src, slen);
221			pos += slen;
222			} else {
223			if (slen + pos + 3 > dlen) return -1;
224			dest[pos++] = '"';
225			strncpy(dest + pos, src, slen);
226			pos += slen;
227			dest[pos++] = '"';
228			}
229			} else {
230			if (slen + pos + 1 > dlen) return -1;
231			strncpy(dest + pos, src, slen);
232			pos += slen;
233			}
234			dest[pos] = '\0';
235			return pos;
236			}
237
238
239
240			static char *
241			quoted_cmdline( /* compose command line for StartProcess() as static string */
242
243			char cmdpath, / full path to executable */
244			char sl[] / list of arguments */
245			)
246			{
247			static char *cmdstr;
248			static int clen;
249			char *newcs;
250			int newlen, pos, res, i;
251
252			newlen = strlen(cmdpath) + 3; /* allow two quotes plus the final \0 */
253			for (i = 0; sl[i] != NULL; i++) {
254			newlen += strlen(sl[i]) + 3; /* allow two quotes and a space */
255			}
256			if (cmdstr == NULL) {
257			cmdstr = (char *) malloc(newlen);
258			if (cmdstr == NULL) return NULL;
259			} else if (newlen > clen) {
260			newcs = (char *) realloc(cmdstr, newlen);
261			if (newcs == NULL) return NULL;
262			cmdstr = newcs;
263			}
264			clen = newlen;
265			pos = wordncopy(cmdstr, cmdpath, clen, 0, 1);
266			if (pos < 0) return NULL;
267			for (i = 0; sl[i] != NULL; i++) {
268			res = wordncopy(cmdstr + pos, sl[i], clen - pos, 1, 1);
269			if (res < 0) return NULL;
270			pos += res;
271			}
272			return cmdstr;
273			}
274
275
276			int
277			open_process(SUBPROC proc, char av[])
278			{
279			char *cmdpath;
280			char *cmdstr;
281
282	greg	3.8	if (av == NULL \|\| av[0] == NULL) {
283			fputs("Illegal call to open_process()!\n", stderr);
284			return -1;
285			}
286	schorsch	3.1	proc->running = 0;
287	greg	3.7	if (av == NULL) { return -1; }
288	schorsch	3.1	cmdpath = getpath(av[0], getenv("PATH"), X_OK);
289	schorsch	3.6	cmdstr = quoted_cmdline(cmdpath, av+1);
290	schorsch	3.1	if (cmdstr == NULL) { return 0; }
291			return start_process(proc, cmdstr);
292			}
293
294
295	schorsch	3.5	int win_kill(RT_PID pid, int sig) /* we ignore sig... */
296			{
297			HANDLE hProc;
298
299			hProc = OpenProcess(SYNCHRONIZE\|PROCESS_TERMINATE, FALSE, pid);
300			/* it looks like we want to ignore errors here */
301			if(hProc != NULL) {
302			#ifdef OBSOLETE_WINDOWS
303			#define KILL_TIMEOUT 10 * 1000 /* milliseconds */
304			/* it might have some windows open... */
305			EnumWindows((WNDENUMPROC)TerminateAppEnum, (LPARAM)pid);
306			if(WaitForSingleObject(hProc, KILL_TIMEOUT)!=WAIT_OBJECT_0) {
307			/* No way to avoid dangling DLLs here. */
308			TerminateProcess(hProc, 0);
309			}
310			#else
311			SafeTerminateProcess(hProc, 0);
312			#endif
313			/* WaitForSingleObject(hProc, 0); */
314			/* not much use to wait on Windows */
315			CloseHandle(hProc);
316			}
317			return 0; /* XXX we need to figure out more here... */
318			}
319
320
321	schorsch	3.1	int
322			close_process(SUBPROC *proc) {
323			int icres, ocres;
324			DWORD pid;
325
326			ocres = close(proc->w);
327			icres = close(proc->r);
328			pid = proc->pid;
329			if(ocres != 0 \|\| icres != 0) {
330			/* something went wrong: enforce infanticide */
331			/* other than that, it looks like we want to ignore errors here */
332			if (proc->running) {
333	schorsch	3.6	win_kill(pid, 0);
334	schorsch	3.1	}
335			}
336			proc->running = 0;
337			return 0; /* XXX we need to figure out more here... */
338			}
339
340
341			#ifdef TEST_MODULE
342			int
343			main( int argc, char **argv )
344			{
345			SUBPROC proc;
346			FILE inf, outf;
347			int res;
348			char ret[1024];
349			char *command[]= {"word", "gappy word", "\"quoted words\"", "'squoted words'", NULL};
350
351			res = open_process(&proc, command)
352			if (res == 0) {
353			printf("open_process() failed with return value 0\n");
354			return -1;
355			}
356			printf("process opened with return value: %d, pid: %d, r: %d, w: %d\n",
357			res, proc.pid, proc.r, proc.w);
358			inf = fdopen(proc.r, "rb");
359			outf = fdopen(proc.w, "wb");
360			fprintf(outf,"0 0 0 0 1 0\n");
361			fflush(outf);
362			fgets(ret, sizeof(ret), inf);
363			printf("%s\n",ret);
364			close_process(&proc);
365			}
366			#endif
367