root/TSRM/tsrm_nw.c

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DEFINITIONS

This source file includes following definitions.
  1. popen
  2. pclose

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2015 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Venkat Raghavan S <rvenkat@novell.com>                      |
   |          Anantha Kesari H Y <hyanantha@novell.com>                   |
   +----------------------------------------------------------------------+
*/

/* $Id$ */

#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>

#include "TSRM.h"

#ifdef NETWARE

#ifdef USE_MKFIFO
#include <sys/stat.h>
#elif !defined(USE_PIPE_OPEN)   /* NXFifoOpen */
#include <nks/fsio.h>
#endif

#include <nks/vm.h>
#include <nks/memory.h>

#include <string.h>

#include "mktemp.h"

/* strtok() call in LibC is abending when used in a different address space
 * -- hence using PHP's version itself for now
 */
#include "tsrm_strtok_r.h"
#define tsrm_strtok_r(a,b,c) strtok((a),(b))

#define WHITESPACE  " \t"
#define MAX_ARGS    10


TSRM_API FILE* popen(const char *commandline, const char *type)
{
        char *command = NULL, *argv[MAX_ARGS] = {'\0'}, **env = NULL;
        char *tempName = "sys:/php/temp/phpXXXXXX.tmp";
        char *filePath = NULL;
        char *ptr = NULL;
        int ptrLen = 0, argc = 0, i = 0, envCount = 0, err = 0;
        FILE *stream = NULL;
#if defined(USE_PIPE_OPEN) || defined(USE_MKFIFO)
        int pipe_handle;
        int mode = O_RDONLY;
#else
        NXHandle_t pipe_handle;
        NXMode_t mode = NX_O_RDONLY;
#endif
        NXExecEnvSpec_t envSpec;
        NXNameSpec_t nameSpec;
        NXVmId_t newVM = 0;

        /* Check for validity of input parameters */
        if (!commandline || !type)
                return NULL;

        /* Get temporary file name */
        filePath = mktemp(tempName);
        if (!filePath)
                return NULL;

        /* Set pipe mode according to type -- for now allow only "r" or "w" */
        if (strcmp(type, "r") == 0)
#if defined(USE_PIPE_OPEN) || defined(USE_MKFIFO)
                mode = O_RDONLY;
#else
                mode = NX_O_RDONLY;
#endif
        else if (strcmp(type, "w") == 0)
#if defined(USE_PIPE_OPEN) || defined(USE_MKFIFO)
                mode = O_WRONLY;
#else
                mode = NX_O_WRONLY;
#endif
        else
                return NULL;

#ifdef USE_PIPE_OPEN
        pipe_handle = pipe_open(filePath, mode);
        if (pipe_handle == -1)
                return NULL;
#elif defined(USE_MKFIFO)
        pipe_handle = mkfifo(filePath, mode);
        if (pipe_handle == -1)
                return NULL;
#else
        /* - NetWare doesn't require first parameter
         * - Allowing LibC to choose the buffer size for now
         */
        err = NXFifoOpen(0, filePath, mode, 0, &pipe_handle);
        if (err)
                return NULL;
#endif

        /* Copy the environment variables in preparation for the spawn call */
        envCount = NXGetEnvCount() + 1;  /* add one for NULL */
        env = (char **) NXMemAlloc(sizeof(char *) * envCount, 0);
        if (!env)
                return NULL;

        err = NXCopyEnv(env, envCount);
        if (err) {
                NXMemFree (env);
                return NULL;
        }

        /* Separate commandline string into words */
        ptr = tsrm_strtok_r((char*)commandline, WHITESPACE, NULL);
        ptrLen = strlen(ptr);

        command = (char*)malloc(ptrLen + 1);
        if (!command) {
                NXMemFree (env);
                return NULL;
        }

        strcpy (command, ptr);

        ptr = tsrm_strtok_r(NULL, WHITESPACE, NULL);
        while (ptr && (argc < MAX_ARGS)) {
                ptrLen = strlen(ptr);

                argv[argc] = (char*)malloc(ptrLen + 1);
                if (!argv[argc]) {
                        NXMemFree (env);
                        if (command)
                                free (command);

                        for (i = 0; i < argc; i++) {
                                if (argv[i])
                                        free (argv[i]);
                        }

                        return NULL;
                }

                strcpy (argv[argc], ptr);
                argc++;
                ptr = tsrm_strtok_r(NULL, WHITESPACE, NULL);
        }

        /* Setup the execution environment and spawn new process */
        envSpec.esFlags = 0;    /* Not used */
        envSpec.esArgc = argc;
        envSpec.esArgv = (void **) argv;
        envSpec.esEnv = (void **) env;

/*      envSpec.esStdin.ssType = */
        envSpec.esStdout.ssType = NX_OBJ_FIFO;
        envSpec.esStderr.ssType = NX_OBJ_FILE;

        /* 'ssHandle' is not a struct/union/class member */
/*
        envSpec.esStdin.ssHandle =
        envSpec.esStdout.ssHandle =
        envSpec.esStderr.ssHandle = -1;
*/
        envSpec.esStdin.ssPathCtx = NULL;
        envSpec.esStdout.ssPathCtx = NULL;
        envSpec.esStderr.ssPathCtx = NULL;

#if defined(USE_PIPE_OPEN) || defined(USE_MKFIFO)
        if (mode == O_RDONLY) {
#else
        if (mode == NX_O_RDONLY) {
#endif
                envSpec.esStdin.ssPath = filePath;
                envSpec.esStdout.ssPath = stdout;
        } else { /* Write Only */
                envSpec.esStdin.ssPath = stdin;
                envSpec.esStdout.ssPath = filePath;
        }

        envSpec.esStderr.ssPath = stdout;

        nameSpec.ssType = NX_OBJ_FIFO;
/*      nameSpec.ssHandle = 0; */       /* 'ssHandle' is not a struct/union/class member */
        nameSpec.ssPathCtx = NULL;  /* Not used */
        nameSpec.ssPath = argv[0];
        err = NXVmSpawn(&nameSpec, &envSpec, 0, &newVM);
        if (!err)
                /* Get file pointer corresponding to the pipe (file) opened */
                stream = fdopen(pipe_handle, type);

        /* Clean-up */
        if (env)
                NXMemFree (env);

        if (pipe_handle)
#if defined(USE_PIPE_OPEN) || defined(USE_MKFIFO)
                close(pipe_handle);
#else
                NXClose(pipe_handle);
#endif

        if (command)
                free (command);

        for (i = 0; i < argc; i++) {
                if (argv[i])
                        free (argv[i]);
        }

        return stream;
}

TSRM_API int pclose(FILE* stream)
{
        int err = 0;
        NXHandle_t fd = 0;

        /* Get the process associated with this pipe (file) handle and terminate it */
        fd = fileno(stream);
        NXClose (fd);

        err = fclose(stream);

        return err;
}

#endif  /* NETWARE */

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