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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.
*/
#include "../../APR/PerlIO/modperl_apr_perlio.h"
#ifndef MP_SOURCE_SCAN
#include "apr_optional.h"
static APR_OPTIONAL_FN_TYPE(modperl_apr_perlio_apr_file_to_glob) *apr_file_to_glob;
#endif
/* XXX: probably needs a lot more error checkings */
typedef struct {
apr_int32_t in_pipe;
apr_int32_t out_pipe;
apr_int32_t err_pipe;
apr_cmdtype_e cmd_type;
} exec_info;
#undef FAILED /* win32 defines a macro with this name */
#define FAILED(command) ((rc = command) != APR_SUCCESS)
#define SET_TIMEOUT(fp) \
apr_file_pipe_timeout_set(fp, \
(int)(apr_time_from_sec(r->server->timeout)))
static int modperl_spawn_proc_prog(pTHX_
request_rec *r,
const char *command,
const char ***argv,
apr_file_t **script_in,
apr_file_t **script_out,
apr_file_t **script_err)
{
exec_info e_info;
apr_pool_t *p;
const char * const *env;
apr_procattr_t *procattr;
apr_proc_t *procnew;
apr_status_t rc = APR_SUCCESS;
e_info.in_pipe = APR_CHILD_BLOCK;
e_info.out_pipe = APR_CHILD_BLOCK;
e_info.err_pipe = APR_CHILD_BLOCK;
e_info.cmd_type = APR_PROGRAM;
p = r->main ? r->main->pool : r->pool;
*script_out = *script_in = *script_err = NULL;
env = (const char * const *)ap_create_environment(p, r->subprocess_env);
if (FAILED(apr_procattr_create(&procattr, p)) ||
FAILED(apr_procattr_io_set(procattr, e_info.in_pipe,
e_info.out_pipe, e_info.err_pipe)) ||
FAILED(apr_procattr_dir_set(procattr,
ap_make_dirstr_parent(r->pool,
r->filename))) ||
FAILED(apr_procattr_cmdtype_set(procattr, e_info.cmd_type)))
{
/* Something bad happened, tell the world. */
ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r,
"couldn't set child process attributes: %s",
r->filename);
return rc;
}
procnew = apr_pcalloc(p, sizeof(*procnew));
if (FAILED(ap_os_create_privileged_process(r, procnew, command,
*argv, env, procattr, p)))
{
/* Bad things happened. Everyone should have cleaned up. */
ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r,
"couldn't create child process: %d: %s",
rc, r->filename);
return rc;
}
apr_pool_note_subprocess(p, procnew, APR_KILL_AFTER_TIMEOUT);
if (!(*script_in = procnew->in)) {
Perl_croak(aTHX_ "broken program-in stream");
return APR_EBADF;
}
SET_TIMEOUT(*script_in);
if (!(*script_out = procnew->out)) {
Perl_croak(aTHX_ "broken program-out stream");
return APR_EBADF;
}
SET_TIMEOUT(*script_out);
if (!(*script_err = procnew->err)) {
Perl_croak(aTHX_ "broken program-err stream");
return APR_EBADF;
}
SET_TIMEOUT(*script_err);
return rc;
}
#define PUSH_FILE_GLOB(fp, type) \
PUSHs(apr_file_to_glob(aTHX_ fp, r->pool, type))
#define PUSH_FILE_GLOB_READ(fp) \
PUSH_FILE_GLOB(fp, MODPERL_APR_PERLIO_HOOK_READ)
#define PUSH_FILE_GLOB_WRITE(fp) \
PUSH_FILE_GLOB(fp, MODPERL_APR_PERLIO_HOOK_WRITE)
#define CLOSE_SCRIPT_STD(stream) \
rc = apr_file_close(stream); \
if (rc != APR_SUCCESS) { \
XSRETURN_UNDEF; \
}
MP_STATIC XS(MPXS_modperl_spawn_proc_prog)
{
dXSARGS;
const char *usage = "Usage: spawn_proc_prog($r, $command, [\\@argv])";
if (items < 2) {
Perl_croak(aTHX_ "%s", usage);
}
SP -= items;
{
apr_file_t *script_in, *script_out, *script_err;
apr_status_t rc;
const char **argv;
int i=0;
AV *av_argv = (AV *)NULL;
I32 len=-1, av_items=0;
request_rec *r = modperl_xs_sv2request_rec(aTHX_ ST(0), NULL, cv);
const char *command = (const char *)SvPV_nolen(ST(1));
if (items == 3) {
if (SvROK(ST(2)) && SvTYPE(SvRV(ST(2))) == SVt_PVAV) {
av_argv = (AV*)SvRV(ST(2));
len = AvFILLp(av_argv);
av_items = len+1;
}
else {
Perl_croak(aTHX_ "%s", usage);
}
}
/* ap_os_create_privileged_process expects ARGV as char
* **argv, with terminating NULL and the program itself as a
* first item.
*/
argv = apr_palloc(r->pool, (av_items + 2) * sizeof(char *));
argv[0] = command;
if (av_argv) {
for (i = 0; i <= len; i++) {
argv[i+1] = (const char *)SvPV_nolen(AvARRAY(av_argv)[i]);
}
}
argv[i+1] = NULL;
#if 0
for (i=0; i<=len+2; i++) {
Perl_warn(aTHX_ "arg: %d %s\n",
i, argv[i] ? argv[i] : "NULL");
}
#endif
rc = modperl_spawn_proc_prog(aTHX_ r, command, &argv,
&script_in, &script_out,
&script_err);
if (rc == APR_SUCCESS) {
/* XXX: apr_file_to_glob should be set once in the BOOT: section */
apr_file_to_glob =
APR_RETRIEVE_OPTIONAL_FN(modperl_apr_perlio_apr_file_to_glob);
if (GIMME_V == G_VOID) {
CLOSE_SCRIPT_STD(script_in);
CLOSE_SCRIPT_STD(script_out);
CLOSE_SCRIPT_STD(script_err);
XSRETURN_EMPTY;
}
else if (GIMME_V == G_SCALAR) {
/* XXX: need to do lots of error checking before
* putting the object on the stack
*/
EXTEND(SP, 1);
PUSH_FILE_GLOB_READ(script_out);
CLOSE_SCRIPT_STD(script_in);
CLOSE_SCRIPT_STD(script_err);
}
else {
EXTEND(SP, 3);
PUSH_FILE_GLOB_WRITE(script_in);
PUSH_FILE_GLOB_READ(script_out);
PUSH_FILE_GLOB_READ(script_err);
}
}
else {
XSRETURN_UNDEF;
}
}
PUTBACK;
}
/*
* Local Variables:
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
*/
|
