| 1 | #include <stdlib.h>
|
|---|
| 2 | #include <stdio.h>
|
|---|
| 3 | #include <process.h> /* for msvc _beginthreadex, _endthreadex */
|
|---|
| 4 | #include <windows.h>
|
|---|
| 5 |
|
|---|
| 6 | #include "sub_proc.h"
|
|---|
| 7 | #include "proc.h"
|
|---|
| 8 | #include "w32err.h"
|
|---|
| 9 | #include "config.h"
|
|---|
| 10 | #include "debug.h"
|
|---|
| 11 |
|
|---|
| 12 | static char *make_command_line(char *shell_name, char *exec_path, char **argv);
|
|---|
| 13 |
|
|---|
| 14 | typedef struct sub_process_t {
|
|---|
| 15 | int sv_stdin[2];
|
|---|
| 16 | int sv_stdout[2];
|
|---|
| 17 | int sv_stderr[2];
|
|---|
| 18 | int using_pipes;
|
|---|
| 19 | char *inp;
|
|---|
| 20 | DWORD incnt;
|
|---|
| 21 | char * volatile outp;
|
|---|
| 22 | volatile DWORD outcnt;
|
|---|
| 23 | char * volatile errp;
|
|---|
| 24 | volatile DWORD errcnt;
|
|---|
| 25 | int pid;
|
|---|
| 26 | int exit_code;
|
|---|
| 27 | int signal;
|
|---|
| 28 | long last_err;
|
|---|
| 29 | long lerrno;
|
|---|
| 30 | } sub_process;
|
|---|
| 31 |
|
|---|
| 32 | /* keep track of children so we can implement a waitpid-like routine */
|
|---|
| 33 | static sub_process *proc_array[256];
|
|---|
| 34 | static int proc_index = 0;
|
|---|
| 35 | static int fake_exits_pending = 0;
|
|---|
| 36 |
|
|---|
| 37 | /*
|
|---|
| 38 | * When a process has been waited for, adjust the wait state
|
|---|
| 39 | * array so that we don't wait for it again
|
|---|
| 40 | */
|
|---|
| 41 | static void
|
|---|
| 42 | process_adjust_wait_state(sub_process* pproc)
|
|---|
| 43 | {
|
|---|
| 44 | int i;
|
|---|
| 45 |
|
|---|
| 46 | if (!proc_index)
|
|---|
| 47 | return;
|
|---|
| 48 |
|
|---|
| 49 | for (i = 0; i < proc_index; i++)
|
|---|
| 50 | if (proc_array[i]->pid == pproc->pid)
|
|---|
| 51 | break;
|
|---|
| 52 |
|
|---|
| 53 | if (i < proc_index) {
|
|---|
| 54 | proc_index--;
|
|---|
| 55 | if (i != proc_index)
|
|---|
| 56 | memmove(&proc_array[i], &proc_array[i+1],
|
|---|
| 57 | (proc_index-i) * sizeof(sub_process*));
|
|---|
| 58 | proc_array[proc_index] = NULL;
|
|---|
| 59 | }
|
|---|
| 60 | }
|
|---|
| 61 |
|
|---|
| 62 | /*
|
|---|
| 63 | * Waits for any of the registered child processes to finish.
|
|---|
| 64 | */
|
|---|
| 65 | static sub_process *
|
|---|
| 66 | process_wait_for_any_private(void)
|
|---|
| 67 | {
|
|---|
| 68 | HANDLE handles[256];
|
|---|
| 69 | DWORD retval, which;
|
|---|
| 70 | int i;
|
|---|
| 71 |
|
|---|
| 72 | if (!proc_index)
|
|---|
| 73 | return NULL;
|
|---|
| 74 |
|
|---|
| 75 | /* build array of handles to wait for */
|
|---|
| 76 | for (i = 0; i < proc_index; i++) {
|
|---|
| 77 | handles[i] = (HANDLE) proc_array[i]->pid;
|
|---|
| 78 |
|
|---|
| 79 | if (fake_exits_pending && proc_array[i]->exit_code)
|
|---|
| 80 | break;
|
|---|
| 81 | }
|
|---|
| 82 |
|
|---|
| 83 | /* wait for someone to exit */
|
|---|
| 84 | if (!fake_exits_pending) {
|
|---|
| 85 | retval = WaitForMultipleObjects(proc_index, handles, FALSE, INFINITE);
|
|---|
| 86 | which = retval - WAIT_OBJECT_0;
|
|---|
| 87 | } else {
|
|---|
| 88 | fake_exits_pending--;
|
|---|
| 89 | retval = !WAIT_FAILED;
|
|---|
| 90 | which = i;
|
|---|
| 91 | }
|
|---|
| 92 |
|
|---|
| 93 | /* return pointer to process */
|
|---|
| 94 | if (retval != WAIT_FAILED) {
|
|---|
| 95 | sub_process* pproc = proc_array[which];
|
|---|
| 96 | process_adjust_wait_state(pproc);
|
|---|
| 97 | return pproc;
|
|---|
| 98 | } else
|
|---|
| 99 | return NULL;
|
|---|
| 100 | }
|
|---|
| 101 |
|
|---|
| 102 | /*
|
|---|
| 103 | * Terminate a process.
|
|---|
| 104 | */
|
|---|
| 105 | BOOL
|
|---|
| 106 | process_kill(HANDLE proc, int signal)
|
|---|
| 107 | {
|
|---|
| 108 | sub_process* pproc = (sub_process*) proc;
|
|---|
| 109 | pproc->signal = signal;
|
|---|
| 110 | return (TerminateProcess((HANDLE) pproc->pid, signal));
|
|---|
| 111 | }
|
|---|
| 112 |
|
|---|
| 113 | /*
|
|---|
| 114 | * Use this function to register processes you wish to wait for by
|
|---|
| 115 | * calling process_file_io(NULL) or process_wait_any(). This must be done
|
|---|
| 116 | * because it is possible for callers of this library to reuse the same
|
|---|
| 117 | * handle for multiple processes launches :-(
|
|---|
| 118 | */
|
|---|
| 119 | void
|
|---|
| 120 | process_register(HANDLE proc)
|
|---|
| 121 | {
|
|---|
| 122 | proc_array[proc_index++] = (sub_process *) proc;
|
|---|
| 123 | }
|
|---|
| 124 |
|
|---|
| 125 | /*
|
|---|
| 126 | * Public function which works kind of like waitpid(). Wait for any
|
|---|
| 127 | * of the children to die and return results. To call this function,
|
|---|
| 128 | * you must do 1 of things:
|
|---|
| 129 | *
|
|---|
| 130 | * x = process_easy(...);
|
|---|
| 131 | *
|
|---|
| 132 | * or
|
|---|
| 133 | *
|
|---|
| 134 | * x = process_init_fd();
|
|---|
| 135 | * process_register(x);
|
|---|
| 136 | *
|
|---|
| 137 | * or
|
|---|
| 138 | *
|
|---|
| 139 | * x = process_init();
|
|---|
| 140 | * process_register(x);
|
|---|
| 141 | *
|
|---|
| 142 | * You must NOT then call process_pipe_io() because this function is
|
|---|
| 143 | * not capable of handling automatic notification of any child
|
|---|
| 144 | * death.
|
|---|
| 145 | */
|
|---|
| 146 |
|
|---|
| 147 | HANDLE
|
|---|
| 148 | process_wait_for_any(void)
|
|---|
| 149 | {
|
|---|
| 150 | sub_process* pproc = process_wait_for_any_private();
|
|---|
| 151 |
|
|---|
| 152 | if (!pproc)
|
|---|
| 153 | return NULL;
|
|---|
| 154 | else {
|
|---|
| 155 | /*
|
|---|
| 156 | * Ouch! can't tell caller if this fails directly. Caller
|
|---|
| 157 | * will have to use process_last_err()
|
|---|
| 158 | */
|
|---|
| 159 | (void) process_file_io(pproc);
|
|---|
| 160 | return ((HANDLE) pproc);
|
|---|
| 161 | }
|
|---|
| 162 | }
|
|---|
| 163 |
|
|---|
| 164 | long
|
|---|
| 165 | process_errno(HANDLE proc)
|
|---|
| 166 | {
|
|---|
| 167 | return (((sub_process *)proc)->lerrno);
|
|---|
| 168 | }
|
|---|
| 169 |
|
|---|
| 170 | long
|
|---|
| 171 | process_signal(HANDLE proc)
|
|---|
| 172 | {
|
|---|
| 173 | return (((sub_process *)proc)->signal);
|
|---|
| 174 | }
|
|---|
| 175 |
|
|---|
| 176 | long
|
|---|
| 177 | process_last_err(HANDLE proc)
|
|---|
| 178 | {
|
|---|
| 179 | return (((sub_process *)proc)->last_err);
|
|---|
| 180 | }
|
|---|
| 181 |
|
|---|
| 182 | long
|
|---|
| 183 | process_exit_code(HANDLE proc)
|
|---|
| 184 | {
|
|---|
| 185 | return (((sub_process *)proc)->exit_code);
|
|---|
| 186 | }
|
|---|
| 187 |
|
|---|
| 188 | char *
|
|---|
| 189 | process_outbuf(HANDLE proc)
|
|---|
| 190 | {
|
|---|
| 191 | return (((sub_process *)proc)->outp);
|
|---|
| 192 | }
|
|---|
| 193 |
|
|---|
| 194 | char *
|
|---|
| 195 | process_errbuf(HANDLE proc)
|
|---|
| 196 | {
|
|---|
| 197 | return (((sub_process *)proc)->errp);
|
|---|
| 198 | }
|
|---|
| 199 |
|
|---|
| 200 | int
|
|---|
| 201 | process_outcnt(HANDLE proc)
|
|---|
| 202 | {
|
|---|
| 203 | return (((sub_process *)proc)->outcnt);
|
|---|
| 204 | }
|
|---|
| 205 |
|
|---|
| 206 | int
|
|---|
| 207 | process_errcnt(HANDLE proc)
|
|---|
| 208 | {
|
|---|
| 209 | return (((sub_process *)proc)->errcnt);
|
|---|
| 210 | }
|
|---|
| 211 |
|
|---|
| 212 | void
|
|---|
| 213 | process_pipes(HANDLE proc, int pipes[3])
|
|---|
| 214 | {
|
|---|
| 215 | pipes[0] = ((sub_process *)proc)->sv_stdin[0];
|
|---|
| 216 | pipes[1] = ((sub_process *)proc)->sv_stdout[0];
|
|---|
| 217 | pipes[2] = ((sub_process *)proc)->sv_stderr[0];
|
|---|
| 218 | return;
|
|---|
| 219 | }
|
|---|
| 220 |
|
|---|
| 221 |
|
|---|
| 222 | HANDLE
|
|---|
| 223 | process_init()
|
|---|
| 224 | {
|
|---|
| 225 | sub_process *pproc;
|
|---|
| 226 | /*
|
|---|
| 227 | * open file descriptors for attaching stdin/stdout/sterr
|
|---|
| 228 | */
|
|---|
| 229 | HANDLE stdin_pipes[2];
|
|---|
| 230 | HANDLE stdout_pipes[2];
|
|---|
| 231 | HANDLE stderr_pipes[2];
|
|---|
| 232 | SECURITY_ATTRIBUTES inherit;
|
|---|
| 233 | BYTE sd[SECURITY_DESCRIPTOR_MIN_LENGTH];
|
|---|
| 234 |
|
|---|
| 235 | pproc = malloc(sizeof(*pproc));
|
|---|
| 236 | memset(pproc, 0, sizeof(*pproc));
|
|---|
| 237 |
|
|---|
| 238 | /* We can't use NULL for lpSecurityDescriptor because that
|
|---|
| 239 | uses the default security descriptor of the calling process.
|
|---|
| 240 | Instead we use a security descriptor with no DACL. This
|
|---|
| 241 | allows nonrestricted access to the associated objects. */
|
|---|
| 242 |
|
|---|
| 243 | if (!InitializeSecurityDescriptor((PSECURITY_DESCRIPTOR)(&sd),
|
|---|
| 244 | SECURITY_DESCRIPTOR_REVISION)) {
|
|---|
| 245 | pproc->last_err = GetLastError();
|
|---|
| 246 | pproc->lerrno = E_SCALL;
|
|---|
| 247 | return((HANDLE)pproc);
|
|---|
| 248 | }
|
|---|
| 249 |
|
|---|
| 250 | inherit.nLength = sizeof(inherit);
|
|---|
| 251 | inherit.lpSecurityDescriptor = (PSECURITY_DESCRIPTOR)(&sd);
|
|---|
| 252 | inherit.bInheritHandle = TRUE;
|
|---|
| 253 |
|
|---|
| 254 | // By convention, parent gets pipe[0], and child gets pipe[1]
|
|---|
| 255 | // This means the READ side of stdin pipe goes into pipe[1]
|
|---|
| 256 | // and the WRITE side of the stdout and stderr pipes go into pipe[1]
|
|---|
| 257 | if (CreatePipe( &stdin_pipes[1], &stdin_pipes[0], &inherit, 0) == FALSE ||
|
|---|
| 258 | CreatePipe( &stdout_pipes[0], &stdout_pipes[1], &inherit, 0) == FALSE ||
|
|---|
| 259 | CreatePipe( &stderr_pipes[0], &stderr_pipes[1], &inherit, 0) == FALSE) {
|
|---|
| 260 |
|
|---|
| 261 | pproc->last_err = GetLastError();
|
|---|
| 262 | pproc->lerrno = E_SCALL;
|
|---|
| 263 | return((HANDLE)pproc);
|
|---|
| 264 | }
|
|---|
| 265 |
|
|---|
| 266 | //
|
|---|
| 267 | // Mark the parent sides of the pipes as non-inheritable
|
|---|
| 268 | //
|
|---|
| 269 | if (SetHandleInformation(stdin_pipes[0],
|
|---|
| 270 | HANDLE_FLAG_INHERIT, 0) == FALSE ||
|
|---|
| 271 | SetHandleInformation(stdout_pipes[0],
|
|---|
| 272 | HANDLE_FLAG_INHERIT, 0) == FALSE ||
|
|---|
| 273 | SetHandleInformation(stderr_pipes[0],
|
|---|
| 274 | HANDLE_FLAG_INHERIT, 0) == FALSE) {
|
|---|
| 275 |
|
|---|
| 276 | pproc->last_err = GetLastError();
|
|---|
| 277 | pproc->lerrno = E_SCALL;
|
|---|
| 278 | return((HANDLE)pproc);
|
|---|
| 279 | }
|
|---|
| 280 | pproc->sv_stdin[0] = (int) stdin_pipes[0];
|
|---|
| 281 | pproc->sv_stdin[1] = (int) stdin_pipes[1];
|
|---|
| 282 | pproc->sv_stdout[0] = (int) stdout_pipes[0];
|
|---|
| 283 | pproc->sv_stdout[1] = (int) stdout_pipes[1];
|
|---|
| 284 | pproc->sv_stderr[0] = (int) stderr_pipes[0];
|
|---|
| 285 | pproc->sv_stderr[1] = (int) stderr_pipes[1];
|
|---|
| 286 |
|
|---|
| 287 | pproc->using_pipes = 1;
|
|---|
| 288 |
|
|---|
| 289 | pproc->lerrno = 0;
|
|---|
| 290 |
|
|---|
| 291 | return((HANDLE)pproc);
|
|---|
| 292 | }
|
|---|
| 293 |
|
|---|
| 294 |
|
|---|
| 295 | HANDLE
|
|---|
| 296 | process_init_fd(HANDLE stdinh, HANDLE stdouth, HANDLE stderrh)
|
|---|
| 297 | {
|
|---|
| 298 | sub_process *pproc;
|
|---|
| 299 |
|
|---|
| 300 | pproc = malloc(sizeof(*pproc));
|
|---|
| 301 | memset(pproc, 0, sizeof(*pproc));
|
|---|
| 302 |
|
|---|
| 303 | /*
|
|---|
| 304 | * Just pass the provided file handles to the 'child side' of the
|
|---|
| 305 | * pipe, bypassing pipes altogether.
|
|---|
| 306 | */
|
|---|
| 307 | pproc->sv_stdin[1] = (int) stdinh;
|
|---|
| 308 | pproc->sv_stdout[1] = (int) stdouth;
|
|---|
| 309 | pproc->sv_stderr[1] = (int) stderrh;
|
|---|
| 310 |
|
|---|
| 311 | pproc->last_err = pproc->lerrno = 0;
|
|---|
| 312 |
|
|---|
| 313 | return((HANDLE)pproc);
|
|---|
| 314 | }
|
|---|
| 315 |
|
|---|
| 316 |
|
|---|
| 317 | static HANDLE
|
|---|
| 318 | find_file(char *exec_path, LPOFSTRUCT file_info)
|
|---|
| 319 | {
|
|---|
| 320 | HANDLE exec_handle;
|
|---|
| 321 | char *fname;
|
|---|
| 322 | char *ext;
|
|---|
| 323 |
|
|---|
| 324 | fname = malloc(strlen(exec_path) + 5);
|
|---|
| 325 | strcpy(fname, exec_path);
|
|---|
| 326 | ext = fname + strlen(fname);
|
|---|
| 327 |
|
|---|
| 328 | strcpy(ext, ".exe");
|
|---|
| 329 | if ((exec_handle = (HANDLE)OpenFile(fname, file_info,
|
|---|
| 330 | OF_READ | OF_SHARE_COMPAT)) != (HANDLE)HFILE_ERROR) {
|
|---|
| 331 | free(fname);
|
|---|
| 332 | return(exec_handle);
|
|---|
| 333 | }
|
|---|
| 334 |
|
|---|
| 335 | strcpy(ext, ".cmd");
|
|---|
| 336 | if ((exec_handle = (HANDLE)OpenFile(fname, file_info,
|
|---|
| 337 | OF_READ | OF_SHARE_COMPAT)) != (HANDLE)HFILE_ERROR) {
|
|---|
| 338 | free(fname);
|
|---|
| 339 | return(exec_handle);
|
|---|
| 340 | }
|
|---|
| 341 |
|
|---|
| 342 | strcpy(ext, ".bat");
|
|---|
| 343 | if ((exec_handle = (HANDLE)OpenFile(fname, file_info,
|
|---|
| 344 | OF_READ | OF_SHARE_COMPAT)) != (HANDLE)HFILE_ERROR) {
|
|---|
| 345 | free(fname);
|
|---|
| 346 | return(exec_handle);
|
|---|
| 347 | }
|
|---|
| 348 |
|
|---|
| 349 | /* should .com come before this case? */
|
|---|
| 350 | if ((exec_handle = (HANDLE)OpenFile(exec_path, file_info,
|
|---|
| 351 | OF_READ | OF_SHARE_COMPAT)) != (HANDLE)HFILE_ERROR) {
|
|---|
| 352 | free(fname);
|
|---|
| 353 | return(exec_handle);
|
|---|
| 354 | }
|
|---|
| 355 |
|
|---|
| 356 | strcpy(ext, ".com");
|
|---|
| 357 | if ((exec_handle = (HANDLE)OpenFile(fname, file_info,
|
|---|
| 358 | OF_READ | OF_SHARE_COMPAT)) != (HANDLE)HFILE_ERROR) {
|
|---|
| 359 | free(fname);
|
|---|
| 360 | return(exec_handle);
|
|---|
| 361 | }
|
|---|
| 362 |
|
|---|
| 363 | free(fname);
|
|---|
| 364 | return(exec_handle);
|
|---|
| 365 | }
|
|---|
| 366 |
|
|---|
| 367 |
|
|---|
| 368 | /*
|
|---|
| 369 | * Description: Create the child process to be helped
|
|---|
| 370 | *
|
|---|
| 371 | * Returns:
|
|---|
| 372 | *
|
|---|
| 373 | * Notes/Dependencies:
|
|---|
| 374 | */
|
|---|
| 375 | long
|
|---|
| 376 | process_begin(
|
|---|
| 377 | HANDLE proc,
|
|---|
| 378 | char **argv,
|
|---|
| 379 | char **envp,
|
|---|
| 380 | char *exec_path,
|
|---|
| 381 | char *as_user)
|
|---|
| 382 | {
|
|---|
| 383 | sub_process *pproc = (sub_process *)proc;
|
|---|
| 384 | char *shell_name = 0;
|
|---|
| 385 | int file_not_found=0;
|
|---|
| 386 | HANDLE exec_handle;
|
|---|
| 387 | char buf[256];
|
|---|
| 388 | DWORD bytes_returned;
|
|---|
| 389 | DWORD flags;
|
|---|
| 390 | char *command_line;
|
|---|
| 391 | STARTUPINFO startInfo;
|
|---|
| 392 | PROCESS_INFORMATION procInfo;
|
|---|
| 393 | char *envblk=NULL;
|
|---|
| 394 | OFSTRUCT file_info;
|
|---|
| 395 |
|
|---|
| 396 |
|
|---|
| 397 | /*
|
|---|
| 398 | * Shell script detection... if the exec_path starts with #! then
|
|---|
| 399 | * we want to exec shell-script-name exec-path, not just exec-path
|
|---|
| 400 | * NT doesn't recognize #!/bin/sh or #!/etc/Tivoli/bin/perl. We do not
|
|---|
| 401 | * hard-code the path to the shell or perl or whatever: Instead, we
|
|---|
| 402 | * assume it's in the path somewhere (generally, the NT tools
|
|---|
| 403 | * bin directory)
|
|---|
| 404 | * We use OpenFile here because it is capable of searching the Path.
|
|---|
| 405 | */
|
|---|
| 406 |
|
|---|
| 407 | exec_handle = find_file(exec_path, &file_info);
|
|---|
| 408 |
|
|---|
| 409 | /*
|
|---|
| 410 | * If we couldn't open the file, just assume that Windows32 will be able
|
|---|
| 411 | * to find and execute it.
|
|---|
| 412 | */
|
|---|
| 413 | if (exec_handle == (HANDLE)HFILE_ERROR) {
|
|---|
| 414 | file_not_found++;
|
|---|
| 415 | }
|
|---|
| 416 | else {
|
|---|
| 417 | /* Attempt to read the first line of the file */
|
|---|
| 418 | if (ReadFile( exec_handle,
|
|---|
| 419 | buf, sizeof(buf) - 1, /* leave room for trailing NULL */
|
|---|
| 420 | &bytes_returned, 0) == FALSE || bytes_returned < 2) {
|
|---|
| 421 |
|
|---|
| 422 | pproc->last_err = GetLastError();
|
|---|
| 423 | pproc->lerrno = E_IO;
|
|---|
| 424 | CloseHandle(exec_handle);
|
|---|
| 425 | return(-1);
|
|---|
| 426 | }
|
|---|
| 427 | if (buf[0] == '#' && buf[1] == '!') {
|
|---|
| 428 | /*
|
|---|
| 429 | * This is a shell script... Change the command line from
|
|---|
| 430 | * exec_path args to shell_name exec_path args
|
|---|
| 431 | */
|
|---|
| 432 | char *p;
|
|---|
| 433 |
|
|---|
| 434 | /* Make sure buf is NULL terminated */
|
|---|
| 435 | buf[bytes_returned] = 0;
|
|---|
| 436 | /*
|
|---|
| 437 | * Depending on the file system type, etc. the first line
|
|---|
| 438 | * of the shell script may end with newline or newline-carriage-return
|
|---|
| 439 | * Whatever it ends with, cut it off.
|
|---|
| 440 | */
|
|---|
| 441 | p= strchr(buf, '\n');
|
|---|
| 442 | if (p)
|
|---|
| 443 | *p = 0;
|
|---|
| 444 | p = strchr(buf, '\r');
|
|---|
| 445 | if (p)
|
|---|
| 446 | *p = 0;
|
|---|
| 447 |
|
|---|
| 448 | /*
|
|---|
| 449 | * Find base name of shell
|
|---|
| 450 | */
|
|---|
| 451 | shell_name = strrchr( buf, '/');
|
|---|
| 452 | if (shell_name) {
|
|---|
| 453 | shell_name++;
|
|---|
| 454 | } else {
|
|---|
| 455 | shell_name = &buf[2];/* skipping "#!" */
|
|---|
| 456 | }
|
|---|
| 457 |
|
|---|
| 458 | }
|
|---|
| 459 | CloseHandle(exec_handle);
|
|---|
| 460 | }
|
|---|
| 461 |
|
|---|
| 462 | flags = 0;
|
|---|
| 463 |
|
|---|
| 464 | if (file_not_found)
|
|---|
| 465 | command_line = make_command_line( shell_name, exec_path, argv);
|
|---|
| 466 | else
|
|---|
| 467 | command_line = make_command_line( shell_name, file_info.szPathName,
|
|---|
| 468 | argv);
|
|---|
| 469 |
|
|---|
| 470 | if ( command_line == NULL ) {
|
|---|
| 471 | pproc->last_err = 0;
|
|---|
| 472 | pproc->lerrno = E_NO_MEM;
|
|---|
| 473 | return(-1);
|
|---|
| 474 | }
|
|---|
| 475 |
|
|---|
| 476 | if (envp) {
|
|---|
| 477 | if (arr2envblk(envp, &envblk) ==FALSE) {
|
|---|
| 478 | pproc->last_err = 0;
|
|---|
| 479 | pproc->lerrno = E_NO_MEM;
|
|---|
| 480 | free( command_line );
|
|---|
| 481 | return(-1);
|
|---|
| 482 | }
|
|---|
| 483 | }
|
|---|
| 484 |
|
|---|
| 485 | if ((shell_name) || (file_not_found)) {
|
|---|
| 486 | exec_path = 0; /* Search for the program in %Path% */
|
|---|
| 487 | } else {
|
|---|
| 488 | exec_path = file_info.szPathName;
|
|---|
| 489 | }
|
|---|
| 490 |
|
|---|
| 491 | /*
|
|---|
| 492 | * Set up inherited stdin, stdout, stderr for child
|
|---|
| 493 | */
|
|---|
| 494 | GetStartupInfo(&startInfo);
|
|---|
| 495 | startInfo.dwFlags = STARTF_USESTDHANDLES;
|
|---|
| 496 | startInfo.lpReserved = 0;
|
|---|
| 497 | startInfo.cbReserved2 = 0;
|
|---|
| 498 | startInfo.lpReserved2 = 0;
|
|---|
| 499 | startInfo.lpTitle = shell_name ? shell_name : exec_path;
|
|---|
| 500 | startInfo.hStdInput = (HANDLE)pproc->sv_stdin[1];
|
|---|
| 501 | startInfo.hStdOutput = (HANDLE)pproc->sv_stdout[1];
|
|---|
| 502 | startInfo.hStdError = (HANDLE)pproc->sv_stderr[1];
|
|---|
| 503 |
|
|---|
| 504 | if (as_user) {
|
|---|
| 505 | if (envblk) free(envblk);
|
|---|
| 506 | return -1;
|
|---|
| 507 | } else {
|
|---|
| 508 | DB (DB_JOBS, ("CreateProcess(%s,%s,...)\n",
|
|---|
| 509 | exec_path ? exec_path : "NULL",
|
|---|
| 510 | command_line ? command_line : "NULL"));
|
|---|
| 511 | if (CreateProcess(
|
|---|
| 512 | exec_path,
|
|---|
| 513 | command_line,
|
|---|
| 514 | NULL,
|
|---|
| 515 | 0, /* default security attributes for thread */
|
|---|
| 516 | TRUE, /* inherit handles (e.g. helper pipes, oserv socket) */
|
|---|
| 517 | flags,
|
|---|
| 518 | envblk,
|
|---|
| 519 | 0, /* default starting directory */
|
|---|
| 520 | &startInfo,
|
|---|
| 521 | &procInfo) == FALSE) {
|
|---|
| 522 |
|
|---|
| 523 | pproc->last_err = GetLastError();
|
|---|
| 524 | pproc->lerrno = E_FORK;
|
|---|
| 525 | fprintf(stderr, "process_begin: CreateProcess(%s, %s, ...) failed.\n", exec_path, command_line);
|
|---|
| 526 | if (envblk) free(envblk);
|
|---|
| 527 | free( command_line );
|
|---|
| 528 | return(-1);
|
|---|
| 529 | }
|
|---|
| 530 | }
|
|---|
| 531 |
|
|---|
| 532 | pproc->pid = (int)procInfo.hProcess;
|
|---|
| 533 | /* Close the thread handle -- we'll just watch the process */
|
|---|
| 534 | CloseHandle(procInfo.hThread);
|
|---|
| 535 |
|
|---|
| 536 | /* Close the halves of the pipes we don't need */
|
|---|
| 537 | if (pproc->sv_stdin) {
|
|---|
| 538 | CloseHandle((HANDLE)pproc->sv_stdin[1]);
|
|---|
| 539 | (HANDLE)pproc->sv_stdin[1] = 0;
|
|---|
| 540 | }
|
|---|
| 541 | if (pproc->sv_stdout) {
|
|---|
| 542 | CloseHandle((HANDLE)pproc->sv_stdout[1]);
|
|---|
| 543 | (HANDLE)pproc->sv_stdout[1] = 0;
|
|---|
| 544 | }
|
|---|
| 545 | if (pproc->sv_stderr) {
|
|---|
| 546 | CloseHandle((HANDLE)pproc->sv_stderr[1]);
|
|---|
| 547 | (HANDLE)pproc->sv_stderr[1] = 0;
|
|---|
| 548 | }
|
|---|
| 549 |
|
|---|
| 550 | free( command_line );
|
|---|
| 551 | if (envblk) free(envblk);
|
|---|
| 552 | pproc->lerrno=0;
|
|---|
| 553 | return 0;
|
|---|
| 554 | }
|
|---|
| 555 |
|
|---|
| 556 |
|
|---|
| 557 |
|
|---|
| 558 | static DWORD
|
|---|
| 559 | proc_stdin_thread(sub_process *pproc)
|
|---|
| 560 | {
|
|---|
| 561 | DWORD in_done;
|
|---|
| 562 | for (;;) {
|
|---|
| 563 | if (WriteFile( (HANDLE) pproc->sv_stdin[0], pproc->inp, pproc->incnt,
|
|---|
| 564 | &in_done, NULL) == FALSE)
|
|---|
| 565 | _endthreadex(0);
|
|---|
| 566 | // This if should never be true for anonymous pipes, but gives
|
|---|
| 567 | // us a chance to change I/O mechanisms later
|
|---|
| 568 | if (in_done < pproc->incnt) {
|
|---|
| 569 | pproc->incnt -= in_done;
|
|---|
| 570 | pproc->inp += in_done;
|
|---|
| 571 | } else {
|
|---|
| 572 | _endthreadex(0);
|
|---|
| 573 | }
|
|---|
| 574 | }
|
|---|
| 575 | return 0; // for compiler warnings only.. not reached
|
|---|
| 576 | }
|
|---|
| 577 |
|
|---|
| 578 | static DWORD
|
|---|
| 579 | proc_stdout_thread(sub_process *pproc)
|
|---|
| 580 | {
|
|---|
| 581 | DWORD bufsize = 1024;
|
|---|
| 582 | char c;
|
|---|
| 583 | DWORD nread;
|
|---|
| 584 | pproc->outp = malloc(bufsize);
|
|---|
| 585 | if (pproc->outp == NULL)
|
|---|
| 586 | _endthreadex(0);
|
|---|
| 587 | pproc->outcnt = 0;
|
|---|
| 588 |
|
|---|
| 589 | for (;;) {
|
|---|
| 590 | if (ReadFile( (HANDLE)pproc->sv_stdout[0], &c, 1, &nread, NULL)
|
|---|
| 591 | == FALSE) {
|
|---|
| 592 | /* map_windows32_error_to_string(GetLastError());*/
|
|---|
| 593 | _endthreadex(0);
|
|---|
| 594 | }
|
|---|
| 595 | if (nread == 0)
|
|---|
| 596 | _endthreadex(0);
|
|---|
| 597 | if (pproc->outcnt + nread > bufsize) {
|
|---|
| 598 | bufsize += nread + 512;
|
|---|
| 599 | pproc->outp = realloc(pproc->outp, bufsize);
|
|---|
| 600 | if (pproc->outp == NULL) {
|
|---|
| 601 | pproc->outcnt = 0;
|
|---|
| 602 | _endthreadex(0);
|
|---|
| 603 | }
|
|---|
| 604 | }
|
|---|
| 605 | pproc->outp[pproc->outcnt++] = c;
|
|---|
| 606 | }
|
|---|
| 607 | return 0;
|
|---|
| 608 | }
|
|---|
| 609 |
|
|---|
| 610 | static DWORD
|
|---|
| 611 | proc_stderr_thread(sub_process *pproc)
|
|---|
| 612 | {
|
|---|
| 613 | DWORD bufsize = 1024;
|
|---|
| 614 | char c;
|
|---|
| 615 | DWORD nread;
|
|---|
| 616 | pproc->errp = malloc(bufsize);
|
|---|
| 617 | if (pproc->errp == NULL)
|
|---|
| 618 | _endthreadex(0);
|
|---|
| 619 | pproc->errcnt = 0;
|
|---|
| 620 |
|
|---|
| 621 | for (;;) {
|
|---|
| 622 | if (ReadFile( (HANDLE)pproc->sv_stderr[0], &c, 1, &nread, NULL) == FALSE) {
|
|---|
| 623 | map_windows32_error_to_string(GetLastError());
|
|---|
| 624 | _endthreadex(0);
|
|---|
| 625 | }
|
|---|
| 626 | if (nread == 0)
|
|---|
| 627 | _endthreadex(0);
|
|---|
| 628 | if (pproc->errcnt + nread > bufsize) {
|
|---|
| 629 | bufsize += nread + 512;
|
|---|
| 630 | pproc->errp = realloc(pproc->errp, bufsize);
|
|---|
| 631 | if (pproc->errp == NULL) {
|
|---|
| 632 | pproc->errcnt = 0;
|
|---|
| 633 | _endthreadex(0);
|
|---|
| 634 | }
|
|---|
| 635 | }
|
|---|
| 636 | pproc->errp[pproc->errcnt++] = c;
|
|---|
| 637 | }
|
|---|
| 638 | return 0;
|
|---|
| 639 | }
|
|---|
| 640 |
|
|---|
| 641 |
|
|---|
| 642 | /*
|
|---|
| 643 | * Purpose: collects output from child process and returns results
|
|---|
| 644 | *
|
|---|
| 645 | * Description:
|
|---|
| 646 | *
|
|---|
| 647 | * Returns:
|
|---|
| 648 | *
|
|---|
| 649 | * Notes/Dependencies:
|
|---|
| 650 | */
|
|---|
| 651 | long
|
|---|
| 652 | process_pipe_io(
|
|---|
| 653 | HANDLE proc,
|
|---|
| 654 | char *stdin_data,
|
|---|
| 655 | int stdin_data_len)
|
|---|
| 656 | {
|
|---|
| 657 | sub_process *pproc = (sub_process *)proc;
|
|---|
| 658 | bool_t stdin_eof = FALSE, stdout_eof = FALSE, stderr_eof = FALSE;
|
|---|
| 659 | HANDLE childhand = (HANDLE) pproc->pid;
|
|---|
| 660 | HANDLE tStdin, tStdout, tStderr;
|
|---|
| 661 | DWORD dwStdin, dwStdout, dwStderr;
|
|---|
| 662 | HANDLE wait_list[4];
|
|---|
| 663 | DWORD wait_count;
|
|---|
| 664 | DWORD wait_return;
|
|---|
| 665 | HANDLE ready_hand;
|
|---|
| 666 | bool_t child_dead = FALSE;
|
|---|
| 667 | BOOL GetExitCodeResult;
|
|---|
| 668 |
|
|---|
| 669 | /*
|
|---|
| 670 | * Create stdin thread, if needed
|
|---|
| 671 | */
|
|---|
| 672 | pproc->inp = stdin_data;
|
|---|
| 673 | pproc->incnt = stdin_data_len;
|
|---|
| 674 | if (!pproc->inp) {
|
|---|
| 675 | stdin_eof = TRUE;
|
|---|
| 676 | CloseHandle((HANDLE)pproc->sv_stdin[0]);
|
|---|
| 677 | (HANDLE)pproc->sv_stdin[0] = 0;
|
|---|
| 678 | } else {
|
|---|
| 679 | tStdin = (HANDLE) _beginthreadex( 0, 1024,
|
|---|
| 680 | (unsigned (__stdcall *) (void *))proc_stdin_thread, pproc, 0,
|
|---|
| 681 | (unsigned int *) &dwStdin);
|
|---|
| 682 | if (tStdin == 0) {
|
|---|
| 683 | pproc->last_err = GetLastError();
|
|---|
| 684 | pproc->lerrno = E_SCALL;
|
|---|
| 685 | goto done;
|
|---|
| 686 | }
|
|---|
| 687 | }
|
|---|
| 688 |
|
|---|
| 689 | /*
|
|---|
| 690 | * Assume child will produce stdout and stderr
|
|---|
| 691 | */
|
|---|
| 692 | tStdout = (HANDLE) _beginthreadex( 0, 1024,
|
|---|
| 693 | (unsigned (__stdcall *) (void *))proc_stdout_thread, pproc, 0,
|
|---|
| 694 | (unsigned int *) &dwStdout);
|
|---|
| 695 | tStderr = (HANDLE) _beginthreadex( 0, 1024,
|
|---|
| 696 | (unsigned (__stdcall *) (void *))proc_stderr_thread, pproc, 0,
|
|---|
| 697 | (unsigned int *) &dwStderr);
|
|---|
| 698 |
|
|---|
| 699 | if (tStdout == 0 || tStderr == 0) {
|
|---|
| 700 |
|
|---|
| 701 | pproc->last_err = GetLastError();
|
|---|
| 702 | pproc->lerrno = E_SCALL;
|
|---|
| 703 | goto done;
|
|---|
| 704 | }
|
|---|
| 705 |
|
|---|
| 706 |
|
|---|
| 707 | /*
|
|---|
| 708 | * Wait for all I/O to finish and for the child process to exit
|
|---|
| 709 | */
|
|---|
| 710 |
|
|---|
| 711 | while (!stdin_eof || !stdout_eof || !stderr_eof || !child_dead) {
|
|---|
| 712 | wait_count = 0;
|
|---|
| 713 | if (!stdin_eof) {
|
|---|
| 714 | wait_list[wait_count++] = tStdin;
|
|---|
| 715 | }
|
|---|
| 716 | if (!stdout_eof) {
|
|---|
| 717 | wait_list[wait_count++] = tStdout;
|
|---|
| 718 | }
|
|---|
| 719 | if (!stderr_eof) {
|
|---|
| 720 | wait_list[wait_count++] = tStderr;
|
|---|
| 721 | }
|
|---|
| 722 | if (!child_dead) {
|
|---|
| 723 | wait_list[wait_count++] = childhand;
|
|---|
| 724 | }
|
|---|
| 725 |
|
|---|
| 726 | wait_return = WaitForMultipleObjects(wait_count, wait_list,
|
|---|
| 727 | FALSE, /* don't wait for all: one ready will do */
|
|---|
| 728 | child_dead? 1000 :INFINITE); /* after the child dies, subthreads have
|
|---|
| 729 | one second to collect all remaining output */
|
|---|
| 730 |
|
|---|
| 731 | if (wait_return == WAIT_FAILED) {
|
|---|
| 732 | /* map_windows32_error_to_string(GetLastError());*/
|
|---|
| 733 | pproc->last_err = GetLastError();
|
|---|
| 734 | pproc->lerrno = E_SCALL;
|
|---|
| 735 | goto done;
|
|---|
| 736 | }
|
|---|
| 737 |
|
|---|
| 738 | ready_hand = wait_list[wait_return - WAIT_OBJECT_0];
|
|---|
| 739 |
|
|---|
| 740 | if (ready_hand == tStdin) {
|
|---|
| 741 | CloseHandle((HANDLE)pproc->sv_stdin[0]);
|
|---|
| 742 | (HANDLE)pproc->sv_stdin[0] = 0;
|
|---|
| 743 | CloseHandle(tStdin);
|
|---|
| 744 | tStdin = 0;
|
|---|
| 745 | stdin_eof = TRUE;
|
|---|
| 746 |
|
|---|
| 747 | } else if (ready_hand == tStdout) {
|
|---|
| 748 |
|
|---|
| 749 | CloseHandle((HANDLE)pproc->sv_stdout[0]);
|
|---|
| 750 | (HANDLE)pproc->sv_stdout[0] = 0;
|
|---|
| 751 | CloseHandle(tStdout);
|
|---|
| 752 | tStdout = 0;
|
|---|
| 753 | stdout_eof = TRUE;
|
|---|
| 754 |
|
|---|
| 755 | } else if (ready_hand == tStderr) {
|
|---|
| 756 |
|
|---|
| 757 | CloseHandle((HANDLE)pproc->sv_stderr[0]);
|
|---|
| 758 | (HANDLE)pproc->sv_stderr[0] = 0;
|
|---|
| 759 | CloseHandle(tStderr);
|
|---|
| 760 | tStderr = 0;
|
|---|
| 761 | stderr_eof = TRUE;
|
|---|
| 762 |
|
|---|
| 763 | } else if (ready_hand == childhand) {
|
|---|
| 764 |
|
|---|
| 765 | GetExitCodeResult = GetExitCodeProcess(childhand, (DWORD*)&pproc->exit_code);
|
|---|
| 766 | if (GetExitCodeResult == FALSE) {
|
|---|
| 767 | pproc->last_err = GetLastError();
|
|---|
| 768 | pproc->lerrno = E_SCALL;
|
|---|
| 769 | goto done;
|
|---|
| 770 | }
|
|---|
| 771 | child_dead = TRUE;
|
|---|
| 772 |
|
|---|
| 773 | } else {
|
|---|
| 774 |
|
|---|
| 775 | /* ?? Got back a handle we didn't query ?? */
|
|---|
| 776 | pproc->last_err = 0;
|
|---|
| 777 | pproc->lerrno = E_FAIL;
|
|---|
| 778 | goto done;
|
|---|
| 779 | }
|
|---|
| 780 | }
|
|---|
| 781 |
|
|---|
| 782 | done:
|
|---|
| 783 | if (tStdin != 0)
|
|---|
| 784 | CloseHandle(tStdin);
|
|---|
| 785 | if (tStdout != 0)
|
|---|
| 786 | CloseHandle(tStdout);
|
|---|
| 787 | if (tStderr != 0)
|
|---|
| 788 | CloseHandle(tStderr);
|
|---|
| 789 |
|
|---|
| 790 | if (pproc->lerrno)
|
|---|
| 791 | return(-1);
|
|---|
| 792 | else
|
|---|
| 793 | return(0);
|
|---|
| 794 |
|
|---|
| 795 | }
|
|---|
| 796 |
|
|---|
| 797 | /*
|
|---|
| 798 | * Purpose: collects output from child process and returns results
|
|---|
| 799 | *
|
|---|
| 800 | * Description:
|
|---|
| 801 | *
|
|---|
| 802 | * Returns:
|
|---|
| 803 | *
|
|---|
| 804 | * Notes/Dependencies:
|
|---|
| 805 | */
|
|---|
| 806 | long
|
|---|
| 807 | process_file_io(
|
|---|
| 808 | HANDLE proc)
|
|---|
| 809 | {
|
|---|
| 810 | sub_process *pproc;
|
|---|
| 811 | HANDLE childhand;
|
|---|
| 812 | DWORD wait_return;
|
|---|
| 813 | BOOL GetExitCodeResult;
|
|---|
| 814 |
|
|---|
| 815 | if (proc == NULL)
|
|---|
| 816 | pproc = process_wait_for_any_private();
|
|---|
| 817 | else
|
|---|
| 818 | pproc = (sub_process *)proc;
|
|---|
| 819 |
|
|---|
| 820 | /* some sort of internal error */
|
|---|
| 821 | if (!pproc)
|
|---|
| 822 | return -1;
|
|---|
| 823 |
|
|---|
| 824 | childhand = (HANDLE) pproc->pid;
|
|---|
| 825 |
|
|---|
| 826 | /*
|
|---|
| 827 | * This function is poorly named, and could also be used just to wait
|
|---|
| 828 | * for child death if you're doing your own pipe I/O. If that is
|
|---|
| 829 | * the case, close the pipe handles here.
|
|---|
| 830 | */
|
|---|
| 831 | if (pproc->sv_stdin[0]) {
|
|---|
| 832 | CloseHandle((HANDLE)pproc->sv_stdin[0]);
|
|---|
| 833 | pproc->sv_stdin[0] = 0;
|
|---|
| 834 | }
|
|---|
| 835 | if (pproc->sv_stdout[0]) {
|
|---|
| 836 | CloseHandle((HANDLE)pproc->sv_stdout[0]);
|
|---|
| 837 | pproc->sv_stdout[0] = 0;
|
|---|
| 838 | }
|
|---|
| 839 | if (pproc->sv_stderr[0]) {
|
|---|
| 840 | CloseHandle((HANDLE)pproc->sv_stderr[0]);
|
|---|
| 841 | pproc->sv_stderr[0] = 0;
|
|---|
| 842 | }
|
|---|
| 843 |
|
|---|
| 844 | /*
|
|---|
| 845 | * Wait for the child process to exit
|
|---|
| 846 | */
|
|---|
| 847 |
|
|---|
| 848 | wait_return = WaitForSingleObject(childhand, INFINITE);
|
|---|
| 849 |
|
|---|
| 850 | if (wait_return != WAIT_OBJECT_0) {
|
|---|
| 851 | /* map_windows32_error_to_string(GetLastError());*/
|
|---|
| 852 | pproc->last_err = GetLastError();
|
|---|
| 853 | pproc->lerrno = E_SCALL;
|
|---|
| 854 | goto done2;
|
|---|
| 855 | }
|
|---|
| 856 |
|
|---|
| 857 | GetExitCodeResult = GetExitCodeProcess(childhand, (DWORD*)&pproc->exit_code);
|
|---|
| 858 | if (GetExitCodeResult == FALSE) {
|
|---|
| 859 | pproc->last_err = GetLastError();
|
|---|
| 860 | pproc->lerrno = E_SCALL;
|
|---|
| 861 | }
|
|---|
| 862 |
|
|---|
| 863 | done2:
|
|---|
| 864 | if (pproc->lerrno)
|
|---|
| 865 | return(-1);
|
|---|
| 866 | else
|
|---|
| 867 | return(0);
|
|---|
| 868 |
|
|---|
| 869 | }
|
|---|
| 870 |
|
|---|
| 871 | /*
|
|---|
| 872 | * Description: Clean up any leftover handles, etc. It is up to the
|
|---|
| 873 | * caller to manage and free the input, ouput, and stderr buffers.
|
|---|
| 874 | */
|
|---|
| 875 | void
|
|---|
| 876 | process_cleanup(
|
|---|
| 877 | HANDLE proc)
|
|---|
| 878 | {
|
|---|
| 879 | sub_process *pproc = (sub_process *)proc;
|
|---|
| 880 | int i;
|
|---|
| 881 |
|
|---|
| 882 | if (pproc->using_pipes) {
|
|---|
| 883 | for (i= 0; i <= 1; i++) {
|
|---|
| 884 | if ((HANDLE)pproc->sv_stdin[i])
|
|---|
| 885 | CloseHandle((HANDLE)pproc->sv_stdin[i]);
|
|---|
| 886 | if ((HANDLE)pproc->sv_stdout[i])
|
|---|
| 887 | CloseHandle((HANDLE)pproc->sv_stdout[i]);
|
|---|
| 888 | if ((HANDLE)pproc->sv_stderr[i])
|
|---|
| 889 | CloseHandle((HANDLE)pproc->sv_stderr[i]);
|
|---|
| 890 | }
|
|---|
| 891 | }
|
|---|
| 892 | if ((HANDLE)pproc->pid)
|
|---|
| 893 | CloseHandle((HANDLE)pproc->pid);
|
|---|
| 894 |
|
|---|
| 895 | free(pproc);
|
|---|
| 896 | }
|
|---|
| 897 |
|
|---|
| 898 |
|
|---|
| 899 | /*
|
|---|
| 900 | * Description:
|
|---|
| 901 | * Create a command line buffer to pass to CreateProcess
|
|---|
| 902 | *
|
|---|
| 903 | * Returns: the buffer or NULL for failure
|
|---|
| 904 | * Shell case: sh_name a:/full/path/to/script argv[1] argv[2] ...
|
|---|
| 905 | * Otherwise: argv[0] argv[1] argv[2] ...
|
|---|
| 906 | *
|
|---|
| 907 | * Notes/Dependencies:
|
|---|
| 908 | * CreateProcess does not take an argv, so this command creates a
|
|---|
| 909 | * command line for the executable.
|
|---|
| 910 | */
|
|---|
| 911 |
|
|---|
| 912 | static char *
|
|---|
| 913 | make_command_line( char *shell_name, char *full_exec_path, char **argv)
|
|---|
| 914 | {
|
|---|
| 915 | int argc = 0;
|
|---|
| 916 | char** argvi;
|
|---|
| 917 | int* enclose_in_quotes = NULL;
|
|---|
| 918 | int* enclose_in_quotes_i;
|
|---|
| 919 | unsigned int bytes_required = 0;
|
|---|
| 920 | char* command_line;
|
|---|
| 921 | char* command_line_i;
|
|---|
| 922 | int cygwin_mode = 0; /* HAVE_CYGWIN_SHELL */
|
|---|
| 923 | int have_sh = 0; /* HAVE_CYGWIN_SHELL */
|
|---|
| 924 |
|
|---|
| 925 | #ifdef HAVE_CYGWIN_SHELL
|
|---|
| 926 | have_sh = (shell_name != NULL || strstr(full_exec_path, "sh.exe"));
|
|---|
| 927 | cygwin_mode = 1;
|
|---|
| 928 | #endif
|
|---|
| 929 |
|
|---|
| 930 | if (shell_name && full_exec_path) {
|
|---|
| 931 | bytes_required
|
|---|
| 932 | = strlen(shell_name) + 1 + strlen(full_exec_path);
|
|---|
| 933 | /*
|
|---|
| 934 | * Skip argv[0] if any, when shell_name is given.
|
|---|
| 935 | */
|
|---|
| 936 | if (*argv) argv++;
|
|---|
| 937 | /*
|
|---|
| 938 | * Add one for the intervening space.
|
|---|
| 939 | */
|
|---|
| 940 | if (*argv) bytes_required++;
|
|---|
| 941 | }
|
|---|
| 942 |
|
|---|
| 943 | argvi = argv;
|
|---|
| 944 | while (*(argvi++)) argc++;
|
|---|
| 945 |
|
|---|
| 946 | if (argc) {
|
|---|
| 947 | enclose_in_quotes = (int*) calloc(1, argc * sizeof(int));
|
|---|
| 948 |
|
|---|
| 949 | if (!enclose_in_quotes) {
|
|---|
| 950 | return NULL;
|
|---|
| 951 | }
|
|---|
| 952 | }
|
|---|
| 953 |
|
|---|
| 954 | /* We have to make one pass through each argv[i] to see if we need
|
|---|
| 955 | * to enclose it in ", so we might as well figure out how much
|
|---|
| 956 | * memory we'll need on the same pass.
|
|---|
| 957 | */
|
|---|
| 958 |
|
|---|
| 959 | argvi = argv;
|
|---|
| 960 | enclose_in_quotes_i = enclose_in_quotes;
|
|---|
| 961 | while(*argvi) {
|
|---|
| 962 | char* p = *argvi;
|
|---|
| 963 | unsigned int backslash_count = 0;
|
|---|
| 964 |
|
|---|
| 965 | /*
|
|---|
| 966 | * We have to enclose empty arguments in ".
|
|---|
| 967 | */
|
|---|
| 968 | if (!(*p)) *enclose_in_quotes_i = 1;
|
|---|
| 969 |
|
|---|
| 970 | while(*p) {
|
|---|
| 971 | switch (*p) {
|
|---|
| 972 | case '\"':
|
|---|
| 973 | /*
|
|---|
| 974 | * We have to insert a backslash for each "
|
|---|
| 975 | * and each \ that precedes the ".
|
|---|
| 976 | */
|
|---|
| 977 | bytes_required += (backslash_count + 1);
|
|---|
| 978 | backslash_count = 0;
|
|---|
| 979 | break;
|
|---|
| 980 |
|
|---|
| 981 | #if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
|
|---|
| 982 | case '\\':
|
|---|
| 983 | backslash_count++;
|
|---|
| 984 | break;
|
|---|
| 985 | #endif
|
|---|
| 986 | /*
|
|---|
| 987 | * At one time we set *enclose_in_quotes_i for '*' or '?' to suppress
|
|---|
| 988 | * wildcard expansion in programs linked with MSVC's SETARGV.OBJ so
|
|---|
| 989 | * that argv in always equals argv out. This was removed. Say you have
|
|---|
| 990 | * such a program named glob.exe. You enter
|
|---|
| 991 | * glob '*'
|
|---|
| 992 | * at the sh command prompt. Obviously the intent is to make glob do the
|
|---|
| 993 | * wildcarding instead of sh. If we set *enclose_in_quotes_i for '*' or '?',
|
|---|
| 994 | * then the command line that glob would see would be
|
|---|
| 995 | * glob "*"
|
|---|
| 996 | * and the _setargv in SETARGV.OBJ would _not_ expand the *.
|
|---|
| 997 | */
|
|---|
| 998 | case ' ':
|
|---|
| 999 | case '\t':
|
|---|
| 1000 | *enclose_in_quotes_i = 1;
|
|---|
| 1001 | /* fall through */
|
|---|
| 1002 |
|
|---|
| 1003 | default:
|
|---|
| 1004 | backslash_count = 0;
|
|---|
| 1005 | break;
|
|---|
| 1006 | }
|
|---|
| 1007 |
|
|---|
| 1008 | /*
|
|---|
| 1009 | * Add one for each character in argv[i].
|
|---|
| 1010 | */
|
|---|
| 1011 | bytes_required++;
|
|---|
| 1012 |
|
|---|
| 1013 | p++;
|
|---|
| 1014 | }
|
|---|
| 1015 |
|
|---|
| 1016 | if (*enclose_in_quotes_i) {
|
|---|
| 1017 | /*
|
|---|
| 1018 | * Add one for each enclosing ",
|
|---|
| 1019 | * and one for each \ that precedes the
|
|---|
| 1020 | * closing ".
|
|---|
| 1021 | */
|
|---|
| 1022 | bytes_required += (backslash_count + 2);
|
|---|
| 1023 | }
|
|---|
| 1024 |
|
|---|
| 1025 | /*
|
|---|
| 1026 | * Add one for the intervening space.
|
|---|
| 1027 | */
|
|---|
| 1028 | if (*(++argvi)) bytes_required++;
|
|---|
| 1029 | enclose_in_quotes_i++;
|
|---|
| 1030 | }
|
|---|
| 1031 |
|
|---|
| 1032 | /*
|
|---|
| 1033 | * Add one for the terminating NULL.
|
|---|
| 1034 | */
|
|---|
| 1035 | bytes_required++;
|
|---|
| 1036 |
|
|---|
| 1037 | command_line = (char*) malloc(bytes_required);
|
|---|
| 1038 |
|
|---|
| 1039 | if (!command_line) {
|
|---|
| 1040 | if (enclose_in_quotes) free(enclose_in_quotes);
|
|---|
| 1041 | return NULL;
|
|---|
| 1042 | }
|
|---|
| 1043 |
|
|---|
| 1044 | command_line_i = command_line;
|
|---|
| 1045 |
|
|---|
| 1046 | if (shell_name && full_exec_path) {
|
|---|
| 1047 | while(*shell_name) {
|
|---|
| 1048 | *(command_line_i++) = *(shell_name++);
|
|---|
| 1049 | }
|
|---|
| 1050 |
|
|---|
| 1051 | *(command_line_i++) = ' ';
|
|---|
| 1052 |
|
|---|
| 1053 | while(*full_exec_path) {
|
|---|
| 1054 | *(command_line_i++) = *(full_exec_path++);
|
|---|
| 1055 | }
|
|---|
| 1056 |
|
|---|
| 1057 | if (*argv) {
|
|---|
| 1058 | *(command_line_i++) = ' ';
|
|---|
| 1059 | }
|
|---|
| 1060 | }
|
|---|
| 1061 |
|
|---|
| 1062 | argvi = argv;
|
|---|
| 1063 | enclose_in_quotes_i = enclose_in_quotes;
|
|---|
| 1064 |
|
|---|
| 1065 | while(*argvi) {
|
|---|
| 1066 | char* p = *argvi;
|
|---|
| 1067 | unsigned int backslash_count = 0;
|
|---|
| 1068 |
|
|---|
| 1069 | if (*enclose_in_quotes_i) {
|
|---|
| 1070 | *(command_line_i++) = '\"';
|
|---|
| 1071 | }
|
|---|
| 1072 |
|
|---|
| 1073 | while(*p) {
|
|---|
| 1074 | if (*p == '\"') {
|
|---|
| 1075 | if (cygwin_mode && have_sh) { /* HAVE_CYGWIN_SHELL */
|
|---|
| 1076 | /* instead of a \", cygwin likes "" */
|
|---|
| 1077 | *(command_line_i++) = '\"';
|
|---|
| 1078 | } else {
|
|---|
| 1079 |
|
|---|
| 1080 | /*
|
|---|
| 1081 | * We have to insert a backslash for the "
|
|---|
| 1082 | * and each \ that precedes the ".
|
|---|
| 1083 | */
|
|---|
| 1084 | backslash_count++;
|
|---|
| 1085 |
|
|---|
| 1086 | while(backslash_count) {
|
|---|
| 1087 | *(command_line_i++) = '\\';
|
|---|
| 1088 | backslash_count--;
|
|---|
| 1089 | };
|
|---|
| 1090 | }
|
|---|
| 1091 | #if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
|
|---|
| 1092 | } else if (*p == '\\') {
|
|---|
| 1093 | backslash_count++;
|
|---|
| 1094 | } else {
|
|---|
| 1095 | backslash_count = 0;
|
|---|
| 1096 | #endif
|
|---|
| 1097 | }
|
|---|
| 1098 |
|
|---|
| 1099 | /*
|
|---|
| 1100 | * Copy the character.
|
|---|
| 1101 | */
|
|---|
| 1102 | *(command_line_i++) = *(p++);
|
|---|
| 1103 | }
|
|---|
| 1104 |
|
|---|
| 1105 | if (*enclose_in_quotes_i) {
|
|---|
| 1106 | #if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
|
|---|
| 1107 | /*
|
|---|
| 1108 | * Add one \ for each \ that precedes the
|
|---|
| 1109 | * closing ".
|
|---|
| 1110 | */
|
|---|
| 1111 | while(backslash_count--) {
|
|---|
| 1112 | *(command_line_i++) = '\\';
|
|---|
| 1113 | };
|
|---|
| 1114 | #endif
|
|---|
| 1115 | *(command_line_i++) = '\"';
|
|---|
| 1116 | }
|
|---|
| 1117 |
|
|---|
| 1118 | /*
|
|---|
| 1119 | * Append an intervening space.
|
|---|
| 1120 | */
|
|---|
| 1121 | if (*(++argvi)) {
|
|---|
| 1122 | *(command_line_i++) = ' ';
|
|---|
| 1123 | }
|
|---|
| 1124 |
|
|---|
| 1125 | enclose_in_quotes_i++;
|
|---|
| 1126 | }
|
|---|
| 1127 |
|
|---|
| 1128 | /*
|
|---|
| 1129 | * Append the terminating NULL.
|
|---|
| 1130 | */
|
|---|
| 1131 | *command_line_i = '\0';
|
|---|
| 1132 |
|
|---|
| 1133 | if (enclose_in_quotes) free(enclose_in_quotes);
|
|---|
| 1134 | return command_line;
|
|---|
| 1135 | }
|
|---|
| 1136 |
|
|---|
| 1137 | /*
|
|---|
| 1138 | * Description: Given an argv and optional envp, launch the process
|
|---|
| 1139 | * using the default stdin, stdout, and stderr handles.
|
|---|
| 1140 | * Also, register process so that process_wait_for_any_private()
|
|---|
| 1141 | * can be used via process_file_io(NULL) or
|
|---|
| 1142 | * process_wait_for_any().
|
|---|
| 1143 | *
|
|---|
| 1144 | * Returns:
|
|---|
| 1145 | *
|
|---|
| 1146 | * Notes/Dependencies:
|
|---|
| 1147 | */
|
|---|
| 1148 | HANDLE
|
|---|
| 1149 | process_easy(
|
|---|
| 1150 | char **argv,
|
|---|
| 1151 | char **envp)
|
|---|
| 1152 | {
|
|---|
| 1153 | HANDLE hIn;
|
|---|
| 1154 | HANDLE hOut;
|
|---|
| 1155 | HANDLE hErr;
|
|---|
| 1156 | HANDLE hProcess;
|
|---|
| 1157 |
|
|---|
| 1158 | if (DuplicateHandle(GetCurrentProcess(),
|
|---|
| 1159 | GetStdHandle(STD_INPUT_HANDLE),
|
|---|
| 1160 | GetCurrentProcess(),
|
|---|
| 1161 | &hIn,
|
|---|
| 1162 | 0,
|
|---|
| 1163 | TRUE,
|
|---|
| 1164 | DUPLICATE_SAME_ACCESS) == FALSE) {
|
|---|
| 1165 | fprintf(stderr,
|
|---|
| 1166 | "process_easy: DuplicateHandle(In) failed (e=%d)\n",
|
|---|
| 1167 | GetLastError());
|
|---|
| 1168 | return INVALID_HANDLE_VALUE;
|
|---|
| 1169 | }
|
|---|
| 1170 | if (DuplicateHandle(GetCurrentProcess(),
|
|---|
| 1171 | GetStdHandle(STD_OUTPUT_HANDLE),
|
|---|
| 1172 | GetCurrentProcess(),
|
|---|
| 1173 | &hOut,
|
|---|
| 1174 | 0,
|
|---|
| 1175 | TRUE,
|
|---|
| 1176 | DUPLICATE_SAME_ACCESS) == FALSE) {
|
|---|
| 1177 | fprintf(stderr,
|
|---|
| 1178 | "process_easy: DuplicateHandle(Out) failed (e=%d)\n",
|
|---|
| 1179 | GetLastError());
|
|---|
| 1180 | return INVALID_HANDLE_VALUE;
|
|---|
| 1181 | }
|
|---|
| 1182 | if (DuplicateHandle(GetCurrentProcess(),
|
|---|
| 1183 | GetStdHandle(STD_ERROR_HANDLE),
|
|---|
| 1184 | GetCurrentProcess(),
|
|---|
| 1185 | &hErr,
|
|---|
| 1186 | 0,
|
|---|
| 1187 | TRUE,
|
|---|
| 1188 | DUPLICATE_SAME_ACCESS) == FALSE) {
|
|---|
| 1189 | fprintf(stderr,
|
|---|
| 1190 | "process_easy: DuplicateHandle(Err) failed (e=%d)\n",
|
|---|
| 1191 | GetLastError());
|
|---|
| 1192 | return INVALID_HANDLE_VALUE;
|
|---|
| 1193 | }
|
|---|
| 1194 |
|
|---|
| 1195 | hProcess = process_init_fd(hIn, hOut, hErr);
|
|---|
| 1196 |
|
|---|
| 1197 | if (process_begin(hProcess, argv, envp, argv[0], NULL)) {
|
|---|
| 1198 | fake_exits_pending++;
|
|---|
| 1199 | /* process_begin() failed: make a note of that. */
|
|---|
| 1200 | if (!((sub_process*) hProcess)->last_err)
|
|---|
| 1201 | ((sub_process*) hProcess)->last_err = -1;
|
|---|
| 1202 | ((sub_process*) hProcess)->exit_code = process_last_err(hProcess);
|
|---|
| 1203 |
|
|---|
| 1204 | /* close up unused handles */
|
|---|
| 1205 | CloseHandle(hIn);
|
|---|
| 1206 | CloseHandle(hOut);
|
|---|
| 1207 | CloseHandle(hErr);
|
|---|
| 1208 | }
|
|---|
| 1209 |
|
|---|
| 1210 | process_register(hProcess);
|
|---|
| 1211 |
|
|---|
| 1212 | return hProcess;
|
|---|
| 1213 | }
|
|---|