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/* ====================================================================
* Copyright (c) 1999 The Apache Group. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* 4. The names "Apache Server" and "Apache Group" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE GROUP OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Group.
* For more information on the Apache Group and the Apache HTTP server
* project, please see <http://www.apache.org/>.
*
*/
#include <signal.h>
#include <string.h>
#include <sys/wait.h>
#include "threadproc.h"
#include "apr_thread_proc.h"
#include "apr_file_io.h"
#include "apr_general.h"
ap_status_t ap_createprocattr_init(ap_context_t *cont, struct procattr_t **new)
{
(*new) = (struct procattr_t *)ap_palloc(cont,
sizeof(struct procattr_t));
if ((*new) == NULL) {
return APR_ENOMEM;
}
(*new)->cntxt = cont;
(*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;
return APR_SUCCESS;
}
ap_status_t ap_setprocattr_io(struct procattr_t *attr, ap_int32_t in,
ap_int32_t out, ap_int32_t err)
{
ap_status_t stat;
if (in) {
if ((stat = ap_create_pipe(attr->cntxt, &attr->child_in,
&attr->parent_in)) != APR_SUCCESS) {
return stat;
}
}
if (out) {
if ((stat = ap_create_pipe(attr->cntxt, &attr->parent_out,
&attr->child_out)) != APR_SUCCESS) {
return stat;
}
}
if (err) {
if ((stat = ap_create_pipe(attr->cntxt, &attr->parent_err,
&attr->child_err)) != APR_SUCCESS) {
return stat;
}
}
return APR_SUCCESS;
}
ap_status_t ap_setprocattr_dir(struct procattr_t *attr,
char *dir)
{
attr->currdir = (char *)ap_pstrdup(attr->cntxt, dir);
if (attr->currdir) {
return APR_SUCCESS;
}
return APR_ENOMEM;
}
ap_status_t ap_setprocattr_cmdtype(struct procattr_t *attr,
ap_cmdtype_e cmd)
{
attr->cmdtype = cmd;
return APR_SUCCESS;
}
ap_status_t ap_fork(ap_context_t *cont, struct proc_t **proc)
{
int pid;
(*proc) = (struct proc_t *)ap_palloc(cont, sizeof(struct proc_t));
if ((pid = fork()) < 0) {
return errno;
}
else if (pid == 0) {
(*proc)->pid = pid;
(*proc)->attr = NULL;
return APR_INCHILD;
}
(*proc)->pid = pid;
(*proc)->attr = NULL;
return APR_INPARENT;
}
ap_status_t ap_create_process(ap_context_t *cont, char *progname,
char *const args[], char **env,
struct procattr_t *attr, struct proc_t **new)
{
int i;
char **newargs;
(*new) = (struct proc_t *)ap_palloc(cont, sizeof(struct proc_t));
if ((*new) == NULL){
return APR_ENOMEM;
}
(*new)->cntxt = cont;
if (((*new)->pid = fork()) < 0) {
return errno;
}
else if ((*new)->pid == 0) {
/* child process */
if (attr->child_in) {
ap_close(attr->parent_in);
dup2(attr->child_in->filedes, STDIN_FILENO);
ap_close(attr->child_in);
}
if (attr->child_out) {
ap_close(attr->parent_out);
dup2(attr->child_out->filedes, STDOUT_FILENO);
ap_close(attr->child_out);
}
if (attr->child_err) {
ap_close(attr->parent_err);
dup2(attr->child_err->filedes, STDERR_FILENO);
ap_close(attr->child_err);
}
signal(SIGCHLD, SIG_DFL); /*not sure if this is needed or not */
if (attr->currdir != NULL) {
if (chdir(attr->currdir) == -1) {
exit(-1); /* We have big problems, the child should exit. */
}
}
if (attr->cmdtype == APR_SHELLCMD) {
i = 0;
while (args[i]) {
i++;
}
newargs = (char **)ap_palloc(cont, sizeof (char *) * (i + 3));
newargs[0] = strdup(SHELL_PATH);
newargs[1] = strdup("-c");
i = 0;
while (args[i]) {
newargs[i + 2] = strdup(args[i]);
i++;
}
newargs[i + 3] = NULL;
execve(SHELL_PATH, newargs, env);
}
else {
execve(progname, args, env);
}
exit(-1); /* if we get here, there is a problem, so exit with an */
/* error code. */
}
/* Parent process */
if (attr->child_in) {
ap_close(attr->child_in);
}
if (attr->child_out) {
ap_close(attr->child_out);
}
if (attr->child_err) {
ap_close(attr->child_err);
}
(*new)->attr = attr;
return APR_SUCCESS;
}
ap_status_t ap_get_childin(struct proc_t *proc, ap_file_t **new)
{
(*new) = proc->attr->parent_in;
return APR_SUCCESS;
}
ap_status_t ap_get_childout(struct proc_t *proc, ap_file_t **new)
{
(*new) = proc->attr->parent_out;
return APR_SUCCESS;
}
ap_status_t ap_get_childerr(struct proc_t *proc, ap_file_t **new)
{
(*new) = proc->attr->parent_err;
return APR_SUCCESS;
}
ap_status_t ap_wait_proc(struct proc_t *proc,
ap_wait_how_e wait)
{
pid_t stat;
if (!proc)
return APR_ENOPROC;
if (wait == APR_WAIT) {
if ((stat = waitpid(proc->pid, NULL, WUNTRACED)) > 0) {
return APR_CHILD_DONE;
}
else if (stat == 0) {
return APR_CHILD_NOTDONE;
}
return errno;
}
if ((stat = waitpid(proc->pid, NULL, WUNTRACED | WNOHANG)) > 0) {
return APR_CHILD_DONE;
}
else if (stat == 0) {
return APR_CHILD_NOTDONE;
}
return errno;
}
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