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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /*
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL. You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All Rights
- * Reserved.
- */
-
- /*
- * os2misc.c
- *
- */
- #include "primpl.h"
-
- PR_IMPLEMENT(char *)
- _PR_MD_GET_ENV(const char *name)
- {
- return getenv(name);
- }
-
- PR_IMPLEMENT(PRIntn)
- _PR_MD_PUT_ENV(const char *name)
- {
- return putenv(name);
- }
-
-
- /*
- **************************************************************************
- **************************************************************************
- **
- ** Date and time routines
- **
- **************************************************************************
- **************************************************************************
- */
-
- #include <sys/timeb.h>
- /*
- *-----------------------------------------------------------------------
- *
- * PR_Now --
- *
- * Returns the current time in microseconds since the epoch.
- * The epoch is midnight January 1, 1970 GMT.
- * The implementation is machine dependent. This is the
- * implementation for OS/2.
- * Cf. time_t time(time_t *tp)
- *
- *-----------------------------------------------------------------------
- */
-
- PR_IMPLEMENT(PRTime)
- PR_Now(void)
- {
- PRInt64 s, ms, ms2us, s2us;
- struct timeb b;
-
- ftime(&b);
- LL_I2L(ms2us, PR_USEC_PER_MSEC);
- LL_I2L(s2us, PR_USEC_PER_SEC);
- LL_I2L(s, b.time);
- LL_I2L(ms, b.millitm);
- LL_MUL(ms, ms, ms2us);
- LL_MUL(s, s, s2us);
- LL_ADD(s, s, ms);
- return s;
- }
-
-
- /*
- ***********************************************************************
- ***********************************************************************
- *
- * Process creation routines
- *
- ***********************************************************************
- ***********************************************************************
- */
-
- /*
- * Assemble the command line by concatenating the argv array.
- * On success, this function returns 0 and the resulting command
- * line is returned in *cmdLine. On failure, it returns -1.
- */
- static int assembleCmdLine(char *const *argv, char **cmdLine)
- {
- char *const *arg;
- char *p, *q;
- int cmdLineSize;
- int numBackslashes;
- int i;
- int argNeedQuotes;
-
- /*
- * Find out how large the command line buffer should be.
- */
- cmdLineSize = 0;
- for (arg = argv; *arg; arg++) {
- /*
- * \ and " need to be escaped by a \. In the worst case,
- * every character is a \ or ", so the string of length
- * may double. If we quote an argument, that needs two ".
- * Finally, we need a space between arguments, a null between
- * the EXE name and the arguments, and 2 nulls at the end
- * of command line.
- */
- cmdLineSize += 2 * strlen(*arg) /* \ and " need to be escaped */
- + 2 /* we quote every argument */
- + 4; /* space in between, or final nulls */
- }
- p = *cmdLine = PR_MALLOC(cmdLineSize);
- if (p == NULL) {
- return -1;
- }
-
- for (arg = argv; *arg; arg++) {
- /* Add a space to separates the arguments */
- if (arg > argv + 1) {
- *p++ = ' ';
- }
- q = *arg;
- numBackslashes = 0;
- argNeedQuotes = 0;
-
- /* If the argument contains white space, it needs to be quoted. */
- if (strpbrk(*arg, " \f\n\r\t\v")) {
- argNeedQuotes = 1;
- }
-
- if (argNeedQuotes) {
- *p++ = '"';
- }
- while (*q) {
- if (*q == '\\') {
- numBackslashes++;
- q++;
- } else if (*q == '"') {
- if (numBackslashes) {
- /*
- * Double the backslashes since they are followed
- * by a quote
- */
- for (i = 0; i < 2 * numBackslashes; i++) {
- *p++ = '\\';
- }
- numBackslashes = 0;
- }
- /* To escape the quote */
- *p++ = '\\';
- *p++ = *q++;
- } else {
- if (numBackslashes) {
- /*
- * Backslashes are not followed by a quote, so
- * don't need to double the backslashes.
- */
- for (i = 0; i < numBackslashes; i++) {
- *p++ = '\\';
- }
- numBackslashes = 0;
- }
- *p++ = *q++;
- }
- }
-
- /* Now we are at the end of this argument */
- if (numBackslashes) {
- /*
- * Double the backslashes if we have a quote string
- * delimiter at the end.
- */
- if (argNeedQuotes) {
- numBackslashes *= 2;
- }
- for (i = 0; i < numBackslashes; i++) {
- *p++ = '\\';
- }
- }
- if (argNeedQuotes) {
- *p++ = '"';
- }
- if(arg == argv)
- *p++ = '\0';
- }
-
- /* Add 2 nulls at the end */
- *p++ = '\0';
- *p = '\0';
- return 0;
- }
-
- /*
- * Assemble the environment block by concatenating the envp array
- * (preserving the terminating null byte in each array element)
- * and adding a null byte at the end.
- *
- * Returns 0 on success. The resulting environment block is returned
- * in *envBlock. Note that if envp is NULL, a NULL pointer is returned
- * in *envBlock. Returns -1 on failure.
- */
- static int assembleEnvBlock(char **envp, char **envBlock)
- {
- char *p;
- char *q;
- char **env;
- char *curEnv;
- char *cwdStart, *cwdEnd;
- int envBlockSize;
-
- PPIB ppib = NULL;
- PTIB ptib = NULL;
-
- if (envp == NULL) {
- *envBlock = NULL;
- return 0;
- }
-
- if(DosGetInfoBlocks(&ptib, &ppib) != NO_ERROR)
- return -1;
-
- curEnv = ppib->pib_pchenv;
-
- cwdStart = curEnv;
- while (*cwdStart) {
- if (cwdStart[0] == '=' && cwdStart[1] != '\0'
- && cwdStart[2] == ':' && cwdStart[3] == '=') {
- break;
- }
- cwdStart += strlen(cwdStart) + 1;
- }
- cwdEnd = cwdStart;
- if (*cwdEnd) {
- cwdEnd += strlen(cwdEnd) + 1;
- while (*cwdEnd) {
- if (cwdEnd[0] != '=' || cwdEnd[1] == '\0'
- || cwdEnd[2] != ':' || cwdEnd[3] != '=') {
- break;
- }
- cwdEnd += strlen(cwdEnd) + 1;
- }
- }
- envBlockSize = cwdEnd - cwdStart;
-
- for (env = envp; *env; env++) {
- envBlockSize += strlen(*env) + 1;
- }
- envBlockSize++;
-
- p = *envBlock = PR_MALLOC(envBlockSize);
- if (p == NULL) {
- return -1;
- }
-
- q = cwdStart;
- while (q < cwdEnd) {
- *p++ = *q++;
- }
-
- for (env = envp; *env; env++) {
- q = *env;
- while (*q) {
- *p++ = *q++;
- }
- *p++ = '\0';
- }
- *p = '\0';
- return 0;
- }
-
- /*
- * For qsort. We sort (case-insensitive) the environment strings
- * before generating the environment block.
- */
- static int compare(const void *arg1, const void *arg2)
- {
- return stricmp(* (char**)arg1, * (char**)arg2);
- }
- PRProcess * _PR_CreateOS2Process(
- const char *path,
- char *const *argv,
- char *const *envp,
- const PRProcessAttr *attr)
- {
- char szFailed[CCHMAXPATH];
- RESULTCODES procInfo;
- APIRET retVal;
- char *cmdLine = NULL;
- char *envBlock = NULL;
- char **newEnvp;
- PRProcess *proc = NULL;
- HFILE hStdIn = 0,
- hStdOut = 0,
- hStdErr = 0;
-
-
- proc = PR_NEW(PRProcess);
- if (!proc) {
- PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
- goto errorExit;
- }
-
- if (assembleCmdLine(argv, &cmdLine) == -1) {
- PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
- goto errorExit;
- }
-
- if (envp == NULL) {
- newEnvp = NULL;
- } else {
- int i;
- int numEnv = 0;
- while (envp[numEnv]) {
- numEnv++;
- }
- newEnvp = (char **) PR_MALLOC((numEnv+1) * sizeof(char *));
- for (i = 0; i <= numEnv; i++) {
- newEnvp[i] = envp[i];
- }
- qsort((void *) newEnvp, (size_t) numEnv, sizeof(char *), compare);
- }
- if (assembleEnvBlock(newEnvp, &envBlock) == -1) {
- PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
- goto errorExit;
- }
-
- if (attr) {
- PRBool redirected = PR_FALSE;
-
- /* On OS/2, there is really no way to pass file handles for stdin, stdout,
- * and stderr to a new process. Instead, we can make it a child process
- * and make the given file handles a copy of our stdin, stdout, and stderr.
- * The child process then inherits ours, and we set ours back. Twisted
- * and gross I know. If you know a better way, please use it.
- */
- if (attr->stdinFd) {
- hStdIn = (HFILE) attr->stdinFd->secret->md.osfd;
- DosDupHandle(0, &hStdIn);
- }
- if (attr->stdoutFd) {
- hStdOut = (HFILE) attr->stdoutFd->secret->md.osfd;
- DosDupHandle(1, &hStdOut);
- }
- if (attr->stderrFd) {
- hStdErr = (HFILE) attr->stderrFd->secret->md.osfd;
- DosDupHandle(2, &hStdErr);
- }
- }
-
- retVal = DosExecPgm(szFailed,
- CCHMAXPATH,
- EXEC_ASYNCRESULT,
- cmdLine,
- envBlock,
- &procInfo,
- argv[0]);
-
- /* Restore our old values. Hope this works */
- if(hStdIn){
- hStdIn = 0;
- DosDupHandle(0, &hStdIn);
- }
- if(hStdOut){
- hStdOut = 1;
- DosDupHandle(1, &hStdOut);
- }
- if(hStdErr){
- hStdErr = 1;
- DosDupHandle(0, &hStdErr);
- }
-
- if (retVal != NO_ERROR) {
- /* XXX what error code? */
- PR_SetError(PR_UNKNOWN_ERROR, retVal);
- goto errorExit;
- }
-
- proc->md.pid = procInfo.codeTerminate;
-
- PR_DELETE(cmdLine);
- if (envBlock) {
- PR_DELETE(envBlock);
- }
- return proc;
-
- errorExit:
- if (cmdLine) {
- PR_DELETE(cmdLine);
- }
- if (envBlock) {
- PR_DELETE(envBlock);
- }
- if (proc) {
- PR_DELETE(proc);
- }
- return NULL;
-
- } /* _PR_CreateWindowsProcess */
-
- PRStatus _PR_DetachOS2Process(PRProcess *process)
- {
- /* This is basically what they did on Windows (CloseHandle)
- * but I don't think it will do much on OS/2. A process is
- * either created as a child or not. You can't 'detach' it
- * later on.
- */
- DosClose(process->md.pid);
- PR_DELETE(process);
- return PR_SUCCESS;
- }
-
- /*
- * XXX: This will currently only work on a child process.
- */
- PRStatus _PR_WaitOS2Process(PRProcess *process,
- PRInt32 *exitCode)
- {
- ULONG ulRetVal;
- RESULTCODES results;
- PID pidEnded = 0;
-
- ulRetVal = DosWaitChild(DCWA_PROCESS, DCWW_WAIT,
- &results,
- &pidEnded, process->md.pid);
-
- if (ulRetVal != NO_ERROR) {
- printf("\nDosWaitChild rc = %i\n", ulRetVal);
- PR_SetError(PR_UNKNOWN_ERROR, ulRetVal);
- return PR_FAILURE;
- }
- PR_DELETE(process);
- return PR_SUCCESS;
- }
-
- PRStatus _PR_KillOS2Process(PRProcess *process)
- {
- ULONG ulRetVal;
- if ((ulRetVal = DosKillProcess(DKP_PROCESS, process->md.pid)) == NO_ERROR) {
- return PR_SUCCESS;
- }
- PR_SetError(PR_UNKNOWN_ERROR, ulRetVal);
- return PR_FAILURE;
- }
-
- PR_IMPLEMENT(PRStatus) _MD_OS2GetHostName(char *name, PRUint32 namelen)
- {
- PRIntn rv;
- PRInt32 syserror;
-
- rv = gethostname(name, (PRInt32) namelen);
- if (0 == rv) {
- return PR_SUCCESS;
- }
- _PR_MD_MAP_GETHOSTNAME_ERROR(sock_errno());
- return PR_FAILURE;
- }
-
- PR_IMPLEMENT(void)
- _PR_MD_WAKEUP_CPUS( void )
- {
- return;
- }
-
-
- /*
- **********************************************************************
- *
- * Memory-mapped files are not supported on OS/2 (or Win16).
- *
- **********************************************************************
- */
-
- PRStatus _MD_CreateFileMap(PRFileMap *fmap, PRInt64 size)
- {
- PR_ASSERT(!"Not implemented");
- PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
- return PR_FAILURE;
- }
-
- void * _MD_MemMap(
- PRFileMap *fmap,
- PRInt64 offset,
- PRUint32 len)
- {
- PR_ASSERT(!"Not implemented");
- PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
- return NULL;
- }
-
- PRStatus _MD_MemUnmap(void *addr, PRUint32 len)
- {
- PR_ASSERT(!"Not implemented");
- PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
- return PR_FAILURE;
- }
-
- PRStatus _MD_CloseFileMap(PRFileMap *fmap)
- {
- PR_ASSERT(!"Not implemented");
- PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
- return PR_FAILURE;
- }
-
-