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freeswitch/libs/apr/threadproc/os2/proc.c

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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define INCL_DOS
#define INCL_DOSERRORS
#include "apr_arch_threadproc.h"
#include "apr_arch_file_io.h"
#include "apr_private.h"
#include "apr_thread_proc.h"
#include "apr_file_io.h"
#include "apr_general.h"
#include "apr_lib.h"
#include "apr_portable.h"
#include "apr_strings.h"
#include "apr_signal.h"
#include <signal.h>
#include <string.h>
#include <sys/wait.h>
#include <unistd.h>
#include <process.h>
#include <stdlib.h>
APR_DECLARE(apr_status_t) apr_procattr_create(apr_procattr_t **new, apr_pool_t *pool)
{
(*new) = (apr_procattr_t *)apr_palloc(pool,
sizeof(apr_procattr_t));
if ((*new) == NULL) {
return APR_ENOMEM;
}
(*new)->pool = pool;
(*new)->parent_in = NULL;
(*new)->child_in = NULL;
(*new)->parent_out = NULL;
(*new)->child_out = NULL;
(*new)->parent_err = NULL;
(*new)->child_err = NULL;
(*new)->currdir = NULL;
(*new)->cmdtype = APR_PROGRAM;
(*new)->detached = FALSE;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_io_set(apr_procattr_t *attr, apr_int32_t in,
apr_int32_t out, apr_int32_t err)
{
apr_status_t stat;
if (in) {
if ((stat = apr_file_pipe_create(&attr->child_in, &attr->parent_in,
attr->pool)) != APR_SUCCESS) {
return stat;
}
switch (in) {
case APR_FULL_BLOCK:
break;
case APR_PARENT_BLOCK:
apr_file_pipe_timeout_set(attr->child_in, 0);
break;
case APR_CHILD_BLOCK:
apr_file_pipe_timeout_set(attr->parent_in, 0);
break;
default:
apr_file_pipe_timeout_set(attr->child_in, 0);
apr_file_pipe_timeout_set(attr->parent_in, 0);
}
}
if (out) {
if ((stat = apr_file_pipe_create(&attr->parent_out, &attr->child_out,
attr->pool)) != APR_SUCCESS) {
return stat;
}
switch (out) {
case APR_FULL_BLOCK:
break;
case APR_PARENT_BLOCK:
apr_file_pipe_timeout_set(attr->child_out, 0);
break;
case APR_CHILD_BLOCK:
apr_file_pipe_timeout_set(attr->parent_out, 0);
break;
default:
apr_file_pipe_timeout_set(attr->child_out, 0);
apr_file_pipe_timeout_set(attr->parent_out, 0);
}
}
if (err) {
if ((stat = apr_file_pipe_create(&attr->parent_err, &attr->child_err,
attr->pool)) != APR_SUCCESS) {
return stat;
}
switch (err) {
case APR_FULL_BLOCK:
break;
case APR_PARENT_BLOCK:
apr_file_pipe_timeout_set(attr->child_err, 0);
break;
case APR_CHILD_BLOCK:
apr_file_pipe_timeout_set(attr->parent_err, 0);
break;
default:
apr_file_pipe_timeout_set(attr->child_err, 0);
apr_file_pipe_timeout_set(attr->parent_err, 0);
}
}
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_child_in_set(apr_procattr_t *attr, apr_file_t *child_in,
apr_file_t *parent_in)
{
if (attr->child_in == NULL && attr->parent_in == NULL)
apr_file_pipe_create(&attr->child_in, &attr->parent_in, attr->pool);
if (child_in != NULL)
apr_file_dup(&attr->child_in, child_in, attr->pool);
if (parent_in != NULL)
apr_file_dup(&attr->parent_in, parent_in, attr->pool);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_child_out_set(apr_procattr_t *attr, apr_file_t *child_out,
apr_file_t *parent_out)
{
if (attr->child_out == NULL && attr->parent_out == NULL)
apr_file_pipe_create(&attr->child_out, &attr->parent_out, attr->pool);
if (child_out != NULL)
apr_file_dup(&attr->child_out, child_out, attr->pool);
if (parent_out != NULL)
apr_file_dup(&attr->parent_out, parent_out, attr->pool);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_child_err_set(apr_procattr_t *attr, apr_file_t *child_err,
apr_file_t *parent_err)
{
if (attr->child_err == NULL && attr->parent_err == NULL)
apr_file_pipe_create(&attr->child_err, &attr->parent_err, attr->pool);
if (child_err != NULL)
apr_file_dup(&attr->child_err, child_err, attr->pool);
if (parent_err != NULL)
apr_file_dup(&attr->parent_err, parent_err, attr->pool);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_dir_set(apr_procattr_t *attr, const char *dir)
{
attr->currdir = apr_pstrdup(attr->pool, dir);
if (attr->currdir) {
return APR_SUCCESS;
}
return APR_ENOMEM;
}
APR_DECLARE(apr_status_t) apr_procattr_cmdtype_set(apr_procattr_t *attr,
apr_cmdtype_e cmd)
{
attr->cmdtype = cmd;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_detach_set(apr_procattr_t *attr, apr_int32_t detach)
{
attr->detached = detach;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_proc_fork(apr_proc_t *proc, apr_pool_t *pool)
{
int pid;
if ((pid = fork()) < 0) {
return errno;
}
else if (pid == 0) {
proc->pid = pid;
proc->in = NULL;
proc->out = NULL;
proc->err = NULL;
return APR_INCHILD;
}
proc->pid = pid;
proc->in = NULL;
proc->out = NULL;
proc->err = NULL;
return APR_INPARENT;
}
/* quotes in the string are doubled up.
* Used to escape quotes in args passed to OS/2's cmd.exe
*/
static char *double_quotes(apr_pool_t *pool, const char *str)
{
int num_quotes = 0;
int len = 0;
char *quote_doubled_str, *dest;
while (str[len]) {
num_quotes += str[len++] == '\"';
}
quote_doubled_str = apr_palloc(pool, len + num_quotes + 1);
dest = quote_doubled_str;
while (*str) {
if (*str == '\"')
*(dest++) = '\"';
*(dest++) = *(str++);
}
*dest = 0;
return quote_doubled_str;
}
APR_DECLARE(apr_status_t) apr_procattr_child_errfn_set(apr_procattr_t *attr,
apr_child_errfn_t *errfn)
{
/* won't ever be called on this platform, so don't save the function pointer */
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_error_check_set(apr_procattr_t *attr,
apr_int32_t chk)
{
/* won't ever be used on this platform, so don't save the flag */
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_addrspace_set(apr_procattr_t *attr,
apr_int32_t addrspace)
{
/* won't ever be used on this platform, so don't save the flag */
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_proc_create(apr_proc_t *proc, const char *progname,
const char * const *args,
const char * const *env,
apr_procattr_t *attr, apr_pool_t *pool)
{
int i, arg, numargs, cmdlen;
apr_status_t status;
const char **newargs;
char savedir[300];
HFILE save_in, save_out, save_err, dup;
int criticalsection = FALSE;
char *extension, *newprogname, *extra_arg = NULL, *cmdline, *cmdline_pos;
char interpreter[1024];
char error_object[260];
apr_file_t *progfile;
int env_len, e;
char *env_block, *env_block_pos;
RESULTCODES rescodes;
/* Prevent other threads from running while these process-wide resources are modified */
if (attr->child_in || attr->child_out || attr->child_err || attr->currdir) {
criticalsection = TRUE;
DosEnterCritSec();
}
if (attr->child_in) {
save_in = -1;
DosDupHandle(STDIN_FILENO, &save_in);
dup = STDIN_FILENO;
DosDupHandle(attr->child_in->filedes, &dup);
DosSetFHState(attr->parent_in->filedes, OPEN_FLAGS_NOINHERIT);
}
if (attr->child_out) {
save_out = -1;
DosDupHandle(STDOUT_FILENO, &save_out);
dup = STDOUT_FILENO;
DosDupHandle(attr->child_out->filedes, &dup);
DosSetFHState(attr->parent_out->filedes, OPEN_FLAGS_NOINHERIT);
}
if (attr->child_err) {
save_err = -1;
DosDupHandle(STDERR_FILENO, &save_err);
dup = STDERR_FILENO;
DosDupHandle(attr->child_err->filedes, &dup);
DosSetFHState(attr->parent_err->filedes, OPEN_FLAGS_NOINHERIT);
}
apr_signal(SIGCHLD, SIG_DFL); /*not sure if this is needed or not */
if (attr->currdir != NULL) {
_getcwd2(savedir, sizeof(savedir));
if (_chdir2(attr->currdir) < 0) {
if (criticalsection)
DosExitCritSec();
return errno;
}
}
interpreter[0] = 0;
extension = strrchr(progname, '.');
if (extension == NULL || strchr(extension, '/') || strchr(extension, '\\'))
extension = "";
/* ### how to handle APR_PROGRAM_ENV and APR_PROGRAM_PATH? */
if (attr->cmdtype == APR_SHELLCMD ||
attr->cmdtype == APR_SHELLCMD_ENV ||
strcasecmp(extension, ".cmd") == 0) {
strcpy(interpreter, "#!" SHELL_PATH);
extra_arg = "/C";
} else if (stricmp(extension, ".exe") != 0) {
status = apr_file_open(&progfile, progname, APR_READ|APR_BUFFERED, 0, pool);
if (status != APR_SUCCESS && APR_STATUS_IS_ENOENT(status)) {
progname = apr_pstrcat(pool, progname, ".exe", NULL);
}
if (status == APR_SUCCESS) {
status = apr_file_gets(interpreter, sizeof(interpreter), progfile);
if (status == APR_SUCCESS) {
if (interpreter[0] == '#' && interpreter[1] == '!') {
/* delete CR/LF & any other whitespace off the end */
int end = strlen(interpreter) - 1;
while (end >= 0 && apr_isspace(interpreter[end])) {
interpreter[end] = '\0';
end--;
}
if (interpreter[2] != '/' && interpreter[2] != '\\' && interpreter[3] != ':') {
char buffer[300];
if (DosSearchPath(SEARCH_ENVIRONMENT, "PATH", interpreter+2, buffer, sizeof(buffer)) == 0) {
strcpy(interpreter+2, buffer);
} else {
strcat(interpreter, ".exe");
if (DosSearchPath(SEARCH_ENVIRONMENT, "PATH", interpreter+2, buffer, sizeof(buffer)) == 0) {
strcpy(interpreter+2, buffer);
}
}
}
} else {
interpreter[0] = 0;
}
}
apr_file_close(progfile);
}
}
i = 0;
while (args && args[i]) {
i++;
}
newargs = (const char **)apr_palloc(pool, sizeof (char *) * (i + 4));
numargs = 0;
if (interpreter[0])
newargs[numargs++] = interpreter + 2;
if (extra_arg)
newargs[numargs++] = "/c";
newargs[numargs++] = newprogname = apr_pstrdup(pool, progname);
arg = 1;
while (args && args[arg]) {
newargs[numargs++] = args[arg++];
}
newargs[numargs] = NULL;
for (i=0; newprogname[i]; i++)
if (newprogname[i] == '/')
newprogname[i] = '\\';
cmdlen = 0;
for (i=0; i<numargs; i++)
cmdlen += strlen(newargs[i]) + 3;
cmdline = apr_palloc(pool, cmdlen + 2);
cmdline_pos = cmdline;
for (i=0; i<numargs; i++) {
const char *a = newargs[i];
if (strpbrk(a, "&|<>\" "))
a = apr_pstrcat(pool, "\"", double_quotes(pool, a), "\"", NULL);
if (i)
*(cmdline_pos++) = ' ';
strcpy(cmdline_pos, a);
cmdline_pos += strlen(cmdline_pos);
}
*(++cmdline_pos) = 0; /* Add required second terminator */
cmdline_pos = strchr(cmdline, ' ');
if (cmdline_pos) {
*cmdline_pos = 0;
cmdline_pos++;
}
/* Create environment block from list of envariables */
if (env) {
for (env_len=1, e=0; env[e]; e++)
env_len += strlen(env[e]) + 1;
env_block = apr_palloc(pool, env_len);
env_block_pos = env_block;
for (e=0; env[e]; e++) {
strcpy(env_block_pos, env[e]);
env_block_pos += strlen(env_block_pos) + 1;
}
*env_block_pos = 0; /* environment block is terminated by a double null */
} else
env_block = NULL;
status = DosExecPgm(error_object, sizeof(error_object),
attr->detached ? EXEC_BACKGROUND : EXEC_ASYNCRESULT,
cmdline, env_block, &rescodes, cmdline);
proc->pid = rescodes.codeTerminate;
if (attr->currdir != NULL) {
chdir(savedir);
}
if (attr->child_in) {
apr_file_close(attr->child_in);
dup = STDIN_FILENO;
DosDupHandle(save_in, &dup);
DosClose(save_in);
}
if (attr->child_out) {
apr_file_close(attr->child_out);
dup = STDOUT_FILENO;
DosDupHandle(save_out, &dup);
DosClose(save_out);
}
if (attr->child_err) {
apr_file_close(attr->child_err);
dup = STDERR_FILENO;
DosDupHandle(save_err, &dup);
DosClose(save_err);
}
if (criticalsection)
DosExitCritSec();
proc->in = attr->parent_in;
proc->err = attr->parent_err;
proc->out = attr->parent_out;
return status;
}
static void proces_result_codes(RESULTCODES codes,
int *exitcode,
apr_exit_why_e *exitwhy)
{
int result = 0;
apr_exit_why_e why = APR_PROC_EXIT;
switch (codes.codeTerminate) {
case TC_EXIT: /* Normal exit */
why = APR_PROC_EXIT;
result = codes.codeResult;
break;
case TC_HARDERROR: /* Hard error halt */
why = APR_PROC_SIGNAL;
result = SIGSYS;
break;
case TC_KILLPROCESS: /* Was killed by a DosKillProcess() */
why = APR_PROC_SIGNAL;
result = SIGKILL;
break;
case TC_TRAP: /* TRAP in 16 bit code */
case TC_EXCEPTION: /* Threw an exception (32 bit code) */
why = APR_PROC_SIGNAL;
switch (codes.codeResult | XCPT_FATAL_EXCEPTION) {
case XCPT_ACCESS_VIOLATION:
result = SIGSEGV;
break;
case XCPT_ILLEGAL_INSTRUCTION:
result = SIGILL;
break;
case XCPT_FLOAT_DIVIDE_BY_ZERO:
case XCPT_INTEGER_DIVIDE_BY_ZERO:
result = SIGFPE;
break;
default:
result = codes.codeResult;
break;
}
}
if (exitcode) {
*exitcode = result;
}
if (exitwhy) {
*exitwhy = why;
}
}
APR_DECLARE(apr_status_t) apr_proc_wait_all_procs(apr_proc_t *proc,
int *exitcode,
apr_exit_why_e *exitwhy,
apr_wait_how_e waithow,
apr_pool_t *p)
{
RESULTCODES codes;
ULONG rc;
PID pid;
rc = DosWaitChild(DCWA_PROCESSTREE, waithow == APR_WAIT ? DCWW_WAIT : DCWW_NOWAIT, &codes, &pid, 0);
if (rc == 0) {
proc->pid = pid;
proces_result_codes(codes, exitcode, exitwhy);
return APR_CHILD_DONE;
} else if (rc == ERROR_CHILD_NOT_COMPLETE) {
return APR_CHILD_NOTDONE;
}
return APR_OS2_STATUS(rc);
}
APR_DECLARE(apr_status_t) apr_proc_wait(apr_proc_t *proc,
int *exitcode, apr_exit_why_e *exitwhy,
apr_wait_how_e waithow)
{
RESULTCODES codes;
ULONG rc;
PID pid;
rc = DosWaitChild(DCWA_PROCESS, waithow == APR_WAIT ? DCWW_WAIT : DCWW_NOWAIT, &codes, &pid, proc->pid);
if (rc == 0) {
proces_result_codes(codes, exitcode, exitwhy);
return APR_CHILD_DONE;
} else if (rc == ERROR_CHILD_NOT_COMPLETE) {
return APR_CHILD_NOTDONE;
}
return APR_OS2_STATUS(rc);
}
APR_DECLARE(apr_status_t) apr_proc_detach(int daemonize)
{
return APR_ENOTIMPL;
}
APR_DECLARE(apr_status_t) apr_procattr_user_set(apr_procattr_t *attr,
const char *username,
const char *password)
{
return APR_ENOTIMPL;
}
APR_DECLARE(apr_status_t) apr_procattr_group_set(apr_procattr_t *attr,
const char *groupname)
{
return APR_ENOTIMPL;
}
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