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/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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#define INCL_DOSERRORS
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#include "apr_arch_threadproc.h"
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#include "apr_arch_file_io.h"
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#include "apr_private.h"
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#include "apr_thread_proc.h"
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#include "apr_file_io.h"
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#include "apr_general.h"
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#include "apr_portable.h"
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#include "apr_strings.h"
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#include "apr_signal.h"
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APR_DECLARE(apr_status_t) apr_procattr_create(apr_procattr_t **new, apr_pool_t *pool)
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(*new) = (apr_procattr_t *)apr_palloc(pool,
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sizeof(apr_procattr_t));
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(*new)->parent_in = NULL;
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(*new)->child_in = NULL;
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(*new)->parent_out = NULL;
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(*new)->child_out = NULL;
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(*new)->parent_err = NULL;
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(*new)->child_err = NULL;
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(*new)->currdir = NULL;
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(*new)->cmdtype = APR_PROGRAM;
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(*new)->detached = FALSE;
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APR_DECLARE(apr_status_t) apr_procattr_io_set(apr_procattr_t *attr, apr_int32_t in,
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apr_int32_t out, apr_int32_t err)
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if ((stat = apr_file_pipe_create(&attr->child_in, &attr->parent_in,
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attr->pool)) != APR_SUCCESS) {
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case APR_PARENT_BLOCK:
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apr_file_pipe_timeout_set(attr->child_in, 0);
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apr_file_pipe_timeout_set(attr->parent_in, 0);
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apr_file_pipe_timeout_set(attr->child_in, 0);
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apr_file_pipe_timeout_set(attr->parent_in, 0);
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if ((stat = apr_file_pipe_create(&attr->parent_out, &attr->child_out,
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attr->pool)) != APR_SUCCESS) {
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case APR_PARENT_BLOCK:
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apr_file_pipe_timeout_set(attr->child_out, 0);
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apr_file_pipe_timeout_set(attr->parent_out, 0);
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apr_file_pipe_timeout_set(attr->child_out, 0);
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apr_file_pipe_timeout_set(attr->parent_out, 0);
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if ((stat = apr_file_pipe_create(&attr->parent_err, &attr->child_err,
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attr->pool)) != APR_SUCCESS) {
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case APR_PARENT_BLOCK:
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apr_file_pipe_timeout_set(attr->child_err, 0);
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case APR_CHILD_BLOCK:
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apr_file_pipe_timeout_set(attr->parent_err, 0);
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apr_file_pipe_timeout_set(attr->child_err, 0);
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apr_file_pipe_timeout_set(attr->parent_err, 0);
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APR_DECLARE(apr_status_t) apr_procattr_child_in_set(apr_procattr_t *attr, apr_file_t *child_in,
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apr_file_t *parent_in)
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if (attr->child_in == NULL && attr->parent_in == NULL)
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apr_file_pipe_create(&attr->child_in, &attr->parent_in, attr->pool);
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if (child_in != NULL)
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apr_file_dup(&attr->child_in, child_in, attr->pool);
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if (parent_in != NULL)
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apr_file_dup(&attr->parent_in, parent_in, attr->pool);
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APR_DECLARE(apr_status_t) apr_procattr_child_out_set(apr_procattr_t *attr, apr_file_t *child_out,
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apr_file_t *parent_out)
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if (attr->child_out == NULL && attr->parent_out == NULL)
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apr_file_pipe_create(&attr->child_out, &attr->parent_out, attr->pool);
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if (child_out != NULL)
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apr_file_dup(&attr->child_out, child_out, attr->pool);
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if (parent_out != NULL)
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apr_file_dup(&attr->parent_out, parent_out, attr->pool);
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APR_DECLARE(apr_status_t) apr_procattr_child_err_set(apr_procattr_t *attr, apr_file_t *child_err,
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apr_file_t *parent_err)
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if (attr->child_err == NULL && attr->parent_err == NULL)
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apr_file_pipe_create(&attr->child_err, &attr->parent_err, attr->pool);
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if (child_err != NULL)
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apr_file_dup(&attr->child_err, child_err, attr->pool);
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if (parent_err != NULL)
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apr_file_dup(&attr->parent_err, parent_err, attr->pool);
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APR_DECLARE(apr_status_t) apr_procattr_dir_set(apr_procattr_t *attr, const char *dir)
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attr->currdir = apr_pstrdup(attr->pool, dir);
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APR_DECLARE(apr_status_t) apr_procattr_cmdtype_set(apr_procattr_t *attr,
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APR_DECLARE(apr_status_t) apr_procattr_detach_set(apr_procattr_t *attr, apr_int32_t detach)
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attr->detached = detach;
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APR_DECLARE(apr_status_t) apr_proc_fork(apr_proc_t *proc, apr_pool_t *pool)
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if ((pid = fork()) < 0) {
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/* quotes in the string are doubled up.
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* Used to escape quotes in args passed to OS/2's cmd.exe
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static char *double_quotes(apr_pool_t *pool, const char *str)
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char *quote_doubled_str, *dest;
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num_quotes += str[len++] == '\"';
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quote_doubled_str = apr_palloc(pool, len + num_quotes + 1);
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dest = quote_doubled_str;
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*(dest++) = *(str++);
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return quote_doubled_str;
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APR_DECLARE(apr_status_t) apr_procattr_child_errfn_set(apr_procattr_t *attr,
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apr_child_errfn_t *errfn)
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/* won't ever be called on this platform, so don't save the function pointer */
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APR_DECLARE(apr_status_t) apr_procattr_error_check_set(apr_procattr_t *attr,
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/* won't ever be used on this platform, so don't save the flag */
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APR_DECLARE(apr_status_t) apr_procattr_addrspace_set(apr_procattr_t *attr,
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apr_int32_t addrspace)
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/* won't ever be used on this platform, so don't save the flag */
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APR_DECLARE(apr_status_t) apr_proc_create(apr_proc_t *proc, const char *progname,
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const char * const *args,
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const char * const *env,
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apr_procattr_t *attr, apr_pool_t *pool)
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int i, arg, numargs, cmdlen;
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const char **newargs;
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HFILE save_in, save_out, save_err, dup;
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int criticalsection = FALSE;
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char *extension, *newprogname, *extra_arg = NULL, *cmdline, *cmdline_pos;
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char interpreter[1024];
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char error_object[260];
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apr_file_t *progfile;
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char *env_block, *env_block_pos;
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RESULTCODES rescodes;
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/* Prevent other threads from running while these process-wide resources are modified */
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if (attr->child_in || attr->child_out || attr->child_err || attr->currdir) {
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criticalsection = TRUE;
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if (attr->child_in) {
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DosDupHandle(STDIN_FILENO, &save_in);
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DosDupHandle(attr->child_in->filedes, &dup);
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DosSetFHState(attr->parent_in->filedes, OPEN_FLAGS_NOINHERIT);
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if (attr->child_out) {
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DosDupHandle(STDOUT_FILENO, &save_out);
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DosDupHandle(attr->child_out->filedes, &dup);
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DosSetFHState(attr->parent_out->filedes, OPEN_FLAGS_NOINHERIT);
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if (attr->child_err) {
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DosDupHandle(STDERR_FILENO, &save_err);
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DosDupHandle(attr->child_err->filedes, &dup);
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DosSetFHState(attr->parent_err->filedes, OPEN_FLAGS_NOINHERIT);
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apr_signal(SIGCHLD, SIG_DFL); /*not sure if this is needed or not */
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if (attr->currdir != NULL) {
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_getcwd2(savedir, sizeof(savedir));
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if (_chdir2(attr->currdir) < 0) {
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extension = strrchr(progname, '.');
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if (extension == NULL || strchr(extension, '/') || strchr(extension, '\\'))
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/* ### how to handle APR_PROGRAM_ENV and APR_PROGRAM_PATH? */
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if (attr->cmdtype == APR_SHELLCMD ||
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attr->cmdtype == APR_SHELLCMD_ENV ||
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strcasecmp(extension, ".cmd") == 0) {
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strcpy(interpreter, "#!" SHELL_PATH);
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} else if (stricmp(extension, ".exe") != 0) {
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status = apr_file_open(&progfile, progname, APR_READ|APR_BUFFERED, 0, pool);
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if (status != APR_SUCCESS && APR_STATUS_IS_ENOENT(status)) {
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progname = apr_pstrcat(pool, progname, ".exe", NULL);
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if (status == APR_SUCCESS) {
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status = apr_file_gets(interpreter, sizeof(interpreter), progfile);
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if (status == APR_SUCCESS) {
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if (interpreter[0] == '#' && interpreter[1] == '!') {
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/* delete CR/LF & any other whitespace off the end */
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int end = strlen(interpreter) - 1;
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while (end >= 0 && apr_isspace(interpreter[end])) {
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interpreter[end] = '\0';
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if (interpreter[2] != '/' && interpreter[2] != '\\' && interpreter[3] != ':') {
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if (DosSearchPath(SEARCH_ENVIRONMENT, "PATH", interpreter+2, buffer, sizeof(buffer)) == 0) {
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strcpy(interpreter+2, buffer);
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strcat(interpreter, ".exe");
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if (DosSearchPath(SEARCH_ENVIRONMENT, "PATH", interpreter+2, buffer, sizeof(buffer)) == 0) {
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strcpy(interpreter+2, buffer);
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apr_file_close(progfile);
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while (args && args[i]) {
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newargs = (const char **)apr_palloc(pool, sizeof (char *) * (i + 4));
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newargs[numargs++] = interpreter + 2;
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newargs[numargs++] = "/c";
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newargs[numargs++] = newprogname = apr_pstrdup(pool, progname);
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while (args && args[arg]) {
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newargs[numargs++] = args[arg++];
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newargs[numargs] = NULL;
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for (i=0; newprogname[i]; i++)
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if (newprogname[i] == '/')
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newprogname[i] = '\\';
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for (i=0; i<numargs; i++)
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cmdlen += strlen(newargs[i]) + 3;
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cmdline = apr_palloc(pool, cmdlen + 2);
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cmdline_pos = cmdline;
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for (i=0; i<numargs; i++) {
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const char *a = newargs[i];
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if (strpbrk(a, "&|<>\" "))
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a = apr_pstrcat(pool, "\"", double_quotes(pool, a), "\"", NULL);
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*(cmdline_pos++) = ' ';
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strcpy(cmdline_pos, a);
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cmdline_pos += strlen(cmdline_pos);
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*(++cmdline_pos) = 0; /* Add required second terminator */
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cmdline_pos = strchr(cmdline, ' ');
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/* Create environment block from list of envariables */
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for (env_len=1, e=0; env[e]; e++)
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env_len += strlen(env[e]) + 1;
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env_block = apr_palloc(pool, env_len);
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env_block_pos = env_block;
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for (e=0; env[e]; e++) {
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strcpy(env_block_pos, env[e]);
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env_block_pos += strlen(env_block_pos) + 1;
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*env_block_pos = 0; /* environment block is terminated by a double null */
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status = DosExecPgm(error_object, sizeof(error_object),
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attr->detached ? EXEC_BACKGROUND : EXEC_ASYNCRESULT,
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cmdline, env_block, &rescodes, cmdline);
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proc->pid = rescodes.codeTerminate;
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if (attr->currdir != NULL) {
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if (attr->child_in) {
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apr_file_close(attr->child_in);
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DosDupHandle(save_in, &dup);
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if (attr->child_out) {
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apr_file_close(attr->child_out);
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DosDupHandle(save_out, &dup);
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if (attr->child_err) {
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apr_file_close(attr->child_err);
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DosDupHandle(save_err, &dup);
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proc->in = attr->parent_in;
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proc->err = attr->parent_err;
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proc->out = attr->parent_out;
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static void proces_result_codes(RESULTCODES codes,
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apr_exit_why_e *exitwhy)
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apr_exit_why_e why = APR_PROC_EXIT;
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switch (codes.codeTerminate) {
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case TC_EXIT: /* Normal exit */
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result = codes.codeResult;
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case TC_HARDERROR: /* Hard error halt */
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why = APR_PROC_SIGNAL;
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case TC_KILLPROCESS: /* Was killed by a DosKillProcess() */
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why = APR_PROC_SIGNAL;
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case TC_TRAP: /* TRAP in 16 bit code */
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case TC_EXCEPTION: /* Threw an exception (32 bit code) */
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why = APR_PROC_SIGNAL;
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switch (codes.codeResult | XCPT_FATAL_EXCEPTION) {
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case XCPT_ACCESS_VIOLATION:
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case XCPT_ILLEGAL_INSTRUCTION:
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case XCPT_FLOAT_DIVIDE_BY_ZERO:
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case XCPT_INTEGER_DIVIDE_BY_ZERO:
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result = codes.codeResult;
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APR_DECLARE(apr_status_t) apr_proc_wait_all_procs(apr_proc_t *proc,
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apr_exit_why_e *exitwhy,
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apr_wait_how_e waithow,
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rc = DosWaitChild(DCWA_PROCESSTREE, waithow == APR_WAIT ? DCWW_WAIT : DCWW_NOWAIT, &codes, &pid, 0);
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proces_result_codes(codes, exitcode, exitwhy);
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return APR_CHILD_DONE;
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} else if (rc == ERROR_CHILD_NOT_COMPLETE) {
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return APR_CHILD_NOTDONE;
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return APR_OS2_STATUS(rc);
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APR_DECLARE(apr_status_t) apr_proc_wait(apr_proc_t *proc,
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int *exitcode, apr_exit_why_e *exitwhy,
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apr_wait_how_e waithow)
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rc = DosWaitChild(DCWA_PROCESS, waithow == APR_WAIT ? DCWW_WAIT : DCWW_NOWAIT, &codes, &pid, proc->pid);
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proces_result_codes(codes, exitcode, exitwhy);
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return APR_CHILD_DONE;
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} else if (rc == ERROR_CHILD_NOT_COMPLETE) {
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return APR_CHILD_NOTDONE;
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return APR_OS2_STATUS(rc);
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APR_DECLARE(apr_status_t) apr_proc_detach(int daemonize)
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APR_DECLARE(apr_status_t) apr_procattr_user_set(apr_procattr_t *attr,
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const char *username,
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const char *password)
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APR_DECLARE(apr_status_t) apr_procattr_group_set(apr_procattr_t *attr,
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const char *groupname)