1/* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements.  See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License.  You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "apr_arch_threadproc.h"
18#include "apr_arch_file_io.h"
19#include "apr_strings.h"
20#include "apr_portable.h"
21
22#include <proc.h>
23
24/* Heavy on no'ops, here's what we want to pass if there is APR_NO_FILE
25 * requested for a specific child handle;
26 */
27static apr_file_t no_file = { NULL, -1, };
28
29static apr_status_t apr_netware_proc_cleanup(void *theproc)
30{
31    apr_proc_t *proc = theproc;
32    int exit_int;
33    int waitpid_options = WUNTRACED | WNOHANG;
34
35    if (proc->pid > 0) {
36        waitpid(proc->pid, &exit_int, waitpid_options);
37    }
38
39/*	NXVmDestroy(proc->pid); */
40    return APR_SUCCESS;
41}
42
43APR_DECLARE(apr_status_t) apr_procattr_create(apr_procattr_t **new,apr_pool_t *pool)
44{
45    (*new) = (apr_procattr_t *)apr_pcalloc(pool, sizeof(apr_procattr_t));
46
47    if ((*new) == NULL) {
48        return APR_ENOMEM;
49    }
50    (*new)->pool = pool;
51    (*new)->cmdtype = APR_PROGRAM;
52    /* Default to a current path since NetWare doesn't handle it very well */
53    apr_filepath_get(&((*new)->currdir), APR_FILEPATH_NATIVE, pool);
54    (*new)->detached = 1;
55    return APR_SUCCESS;
56
57}
58
59APR_DECLARE(apr_status_t) apr_procattr_io_set(apr_procattr_t *attr,
60                                              apr_int32_t in,
61                                              apr_int32_t out,
62                                              apr_int32_t err)
63{
64    apr_status_t rv;
65
66    if ((in != APR_NO_PIPE) && (in != APR_NO_FILE)) {
67        /* APR_CHILD_BLOCK maps to APR_WRITE_BLOCK, while
68         * APR_PARENT_BLOCK maps to APR_READ_BLOCK, so transpose
69         * the CHILD/PARENT blocking flags for the stdin pipe.
70         * stdout/stderr map to the correct mode by default.
71         */
72        if (in == APR_CHILD_BLOCK)
73            in = APR_READ_BLOCK;
74        else if (in == APR_PARENT_BLOCK)
75            in = APR_WRITE_BLOCK;
76
77        if ((rv = apr_file_pipe_create_ex(&attr->child_in, &attr->parent_in,
78                                          in, attr->pool)) == APR_SUCCESS)
79            rv = apr_file_inherit_unset(attr->parent_in);
80        if (rv != APR_SUCCESS)
81            return rv;
82    }
83    else if (in == APR_NO_FILE)
84        attr->child_in = &no_file;
85
86    if ((out != APR_NO_PIPE) && (out != APR_NO_FILE)) {
87        if ((rv = apr_file_pipe_create_ex(&attr->parent_out, &attr->child_out,
88                                          out, attr->pool)) == APR_SUCCESS)
89            rv = apr_file_inherit_unset(attr->parent_out);
90        if (rv != APR_SUCCESS)
91            return rv;
92    }
93    else if (out == APR_NO_FILE)
94        attr->child_out = &no_file;
95
96    if ((err != APR_NO_PIPE) && (err != APR_NO_FILE)) {
97        if ((rv = apr_file_pipe_create_ex(&attr->parent_err, &attr->child_err,
98                                          err, attr->pool)) == APR_SUCCESS)
99            rv = apr_file_inherit_unset(attr->parent_err);
100        if (rv != APR_SUCCESS)
101            return rv;
102    }
103    else if (err == APR_NO_FILE)
104        attr->child_err = &no_file;
105
106    return APR_SUCCESS;
107}
108
109
110APR_DECLARE(apr_status_t) apr_procattr_child_in_set(apr_procattr_t *attr, apr_file_t *child_in,
111                                   apr_file_t *parent_in)
112{
113    apr_status_t rv = APR_SUCCESS;
114
115    if (attr->child_in == NULL && attr->parent_in == NULL
116            && child_in == NULL && parent_in == NULL)
117        if ((rv = apr_file_pipe_create(&attr->child_in, &attr->parent_in,
118                                       attr->pool)) == APR_SUCCESS)
119            rv = apr_file_inherit_unset(attr->parent_in);
120
121    if (child_in != NULL && rv == APR_SUCCESS) {
122        if (attr->child_in && (attr->child_in->filedes != -1))
123            rv = apr_file_dup2(attr->child_in, child_in, attr->pool);
124        else {
125            attr->child_in = NULL;
126            if ((rv = apr_file_dup(&attr->child_in, child_in, attr->pool))
127                    == APR_SUCCESS)
128                rv = apr_file_inherit_set(attr->child_in);
129        }
130    }
131
132    if (parent_in != NULL && rv == APR_SUCCESS) {
133        rv = apr_file_dup(&attr->parent_in, parent_in, attr->pool);
134    }
135
136    return rv;
137}
138
139
140APR_DECLARE(apr_status_t) apr_procattr_child_out_set(apr_procattr_t *attr, apr_file_t *child_out,
141                                                     apr_file_t *parent_out)
142{
143    apr_status_t rv = APR_SUCCESS;
144
145    if (attr->child_out == NULL && attr->parent_out == NULL
146           && child_out == NULL && parent_out == NULL)
147        if ((rv = apr_file_pipe_create(&attr->parent_out, &attr->child_out,
148                                       attr->pool)) == APR_SUCCESS)
149            rv = apr_file_inherit_unset(attr->parent_out);
150
151    if (child_out != NULL && rv == APR_SUCCESS) {
152        if (attr->child_out && (attr->child_out->filedes != -1))
153            rv = apr_file_dup2(attr->child_out, child_out, attr->pool);
154        else {
155            attr->child_out = NULL;
156            if ((rv = apr_file_dup(&attr->child_out, child_out, attr->pool))
157                    == APR_SUCCESS)
158                rv = apr_file_inherit_set(attr->child_out);
159        }
160    }
161
162    if (parent_out != NULL && rv == APR_SUCCESS) {
163        rv = apr_file_dup(&attr->parent_out, parent_out, attr->pool);
164    }
165
166    return rv;
167}
168
169
170APR_DECLARE(apr_status_t) apr_procattr_child_err_set(apr_procattr_t *attr, apr_file_t *child_err,
171                                                     apr_file_t *parent_err)
172{
173    apr_status_t rv = APR_SUCCESS;
174
175    if (attr->child_err == NULL && attr->parent_err == NULL
176           && child_err == NULL && parent_err == NULL)
177        if ((rv = apr_file_pipe_create(&attr->parent_err, &attr->child_err,
178                                       attr->pool)) == APR_SUCCESS)
179            rv = apr_file_inherit_unset(attr->parent_err);
180
181    if (child_err != NULL && rv == APR_SUCCESS) {
182        if (attr->child_err && (attr->child_err->filedes != -1))
183            rv = apr_file_dup2(attr->child_err, child_err, attr->pool);
184        else {
185            attr->child_err = NULL;
186            if ((rv = apr_file_dup(&attr->child_err, child_err, attr->pool))
187                    == APR_SUCCESS)
188                rv = apr_file_inherit_set(attr->child_err);
189        }
190    }
191
192    if (parent_err != NULL && rv == APR_SUCCESS) {
193        rv = apr_file_dup(&attr->parent_err, parent_err, attr->pool);
194    }
195
196    return rv;
197}
198
199
200APR_DECLARE(apr_status_t) apr_procattr_dir_set(apr_procattr_t *attr,
201                               const char *dir)
202{
203    return apr_filepath_merge(&attr->currdir, NULL, dir,
204                              APR_FILEPATH_NATIVE, attr->pool);
205}
206
207APR_DECLARE(apr_status_t) apr_procattr_cmdtype_set(apr_procattr_t *attr,
208                                     apr_cmdtype_e cmd)
209{
210    /* won't ever be called on this platform, so don't save the function pointer */
211    return APR_SUCCESS;
212}
213
214APR_DECLARE(apr_status_t) apr_procattr_detach_set(apr_procattr_t *attr, apr_int32_t detach)
215{
216    attr->detached = detach;
217    return APR_SUCCESS;
218}
219
220#if APR_HAS_FORK
221APR_DECLARE(apr_status_t) apr_proc_fork(apr_proc_t *proc, apr_pool_t *pool)
222{
223    int pid;
224
225    if ((pid = fork()) < 0) {
226        return errno;
227    }
228    else if (pid == 0) {
229        proc->pid = pid;
230        proc->in = NULL;
231        proc->out = NULL;
232        proc->err = NULL;
233        return APR_INCHILD;
234    }
235    proc->pid = pid;
236    proc->in = NULL;
237    proc->out = NULL;
238    proc->err = NULL;
239    return APR_INPARENT;
240}
241#endif
242
243static apr_status_t limit_proc(apr_procattr_t *attr)
244{
245#if APR_HAVE_STRUCT_RLIMIT && APR_HAVE_SETRLIMIT
246#ifdef RLIMIT_CPU
247    if (attr->limit_cpu != NULL) {
248        if ((setrlimit(RLIMIT_CPU, attr->limit_cpu)) != 0) {
249            return errno;
250        }
251    }
252#endif
253#ifdef RLIMIT_NPROC
254    if (attr->limit_nproc != NULL) {
255        if ((setrlimit(RLIMIT_NPROC, attr->limit_nproc)) != 0) {
256            return errno;
257        }
258    }
259#endif
260#if defined(RLIMIT_AS)
261    if (attr->limit_mem != NULL) {
262        if ((setrlimit(RLIMIT_AS, attr->limit_mem)) != 0) {
263            return errno;
264        }
265    }
266#elif defined(RLIMIT_DATA)
267    if (attr->limit_mem != NULL) {
268        if ((setrlimit(RLIMIT_DATA, attr->limit_mem)) != 0) {
269            return errno;
270        }
271    }
272#elif defined(RLIMIT_VMEM)
273    if (attr->limit_mem != NULL) {
274        if ((setrlimit(RLIMIT_VMEM, attr->limit_mem)) != 0) {
275            return errno;
276        }
277    }
278#endif
279#else
280    /*
281     * Maybe make a note in error_log that setrlimit isn't supported??
282     */
283
284#endif
285    return APR_SUCCESS;
286}
287
288APR_DECLARE(apr_status_t) apr_procattr_child_errfn_set(apr_procattr_t *attr,
289                                                       apr_child_errfn_t *errfn)
290{
291    /* won't ever be called on this platform, so don't save the function pointer */
292    return APR_SUCCESS;
293}
294
295APR_DECLARE(apr_status_t) apr_procattr_error_check_set(apr_procattr_t *attr,
296                                                       apr_int32_t chk)
297{
298    /* won't ever be used on this platform, so don't save the flag */
299    return APR_SUCCESS;
300}
301
302APR_DECLARE(apr_status_t) apr_procattr_addrspace_set(apr_procattr_t *attr,
303                                                       apr_int32_t addrspace)
304{
305    attr->addrspace = addrspace;
306    return APR_SUCCESS;
307}
308
309APR_DECLARE(apr_status_t) apr_proc_create(apr_proc_t *newproc,
310									const char *progname,
311									const char * const *args,
312									const char * const *env,
313                              		apr_procattr_t *attr,
314                              		apr_pool_t *pool)
315{
316    wiring_t wire;
317    int      addr_space;
318
319    wire.infd  = attr->child_in
320               ? (attr->child_in->filedes != -1 ? attr->child_in->filedes
321                                                : FD_UNUSED)
322               : fileno(stdin);
323    wire.outfd  = attr->child_out
324                ? (attr->child_out->filedes != -1 ? attr->child_out->filedes
325                                                  : FD_UNUSED)
326                : fileno(stdout);
327    wire.errfd  = attr->child_err
328                ? (attr->child_err->filedes != -1 ? attr->child_err->filedes
329                                                  : FD_UNUSED)
330                : fileno(stderr);
331
332    newproc->in = attr->parent_in;
333    newproc->out = attr->parent_out;
334    newproc->err = attr->parent_err;
335
336    /* attr->detached and PROC_DETACHED do not mean the same thing.  attr->detached means
337     * start the NLM in a separate address space.  PROC_DETACHED means don't wait for the
338     * NLM to unload by calling wait() or waitpid(), just clean up */
339    addr_space = PROC_LOAD_SILENT | (attr->addrspace ? 0 : PROC_CURRENT_SPACE);
340    addr_space |= (attr->detached ? PROC_DETACHED : 0);
341
342    if (attr->currdir) {
343        char *fullpath = NULL;
344        apr_status_t rv;
345
346        if ((rv = apr_filepath_merge(&fullpath, attr->currdir, progname,
347                                     APR_FILEPATH_NATIVE, pool)) != APR_SUCCESS) {
348            return rv;
349        }
350        progname = fullpath;
351    }
352
353    if ((newproc->pid = procve(progname, addr_space, (const char**)env, &wire,
354        NULL, NULL, 0, NULL, (const char **)args)) == -1) {
355        return errno;
356    }
357
358    if (attr->child_in && (attr->child_in->filedes != -1)) {
359        apr_pool_cleanup_kill(apr_file_pool_get(attr->child_in),
360                              attr->child_in, apr_unix_file_cleanup);
361        apr_file_close(attr->child_in);
362    }
363    if (attr->child_out && (attr->child_out->filedes != -1)) {
364        apr_pool_cleanup_kill(apr_file_pool_get(attr->child_out),
365                              attr->child_out, apr_unix_file_cleanup);
366        apr_file_close(attr->child_out);
367    }
368    if (attr->child_err && (attr->child_err->filedes != -1)) {
369        apr_pool_cleanup_kill(apr_file_pool_get(attr->child_err),
370                              attr->child_err, apr_unix_file_cleanup);
371        apr_file_close(attr->child_err);
372    }
373
374    apr_pool_cleanup_register(pool, (void *)newproc, apr_netware_proc_cleanup,
375        apr_pool_cleanup_null);
376
377    return APR_SUCCESS;
378}
379
380APR_DECLARE(apr_status_t) apr_proc_wait_all_procs(apr_proc_t *proc,
381                                                  int *exitcode,
382                                                  apr_exit_why_e *exitwhy,
383                                                  apr_wait_how_e waithow,
384                                                  apr_pool_t *p)
385{
386    proc->pid = -1;
387    return apr_proc_wait(proc, exitcode, exitwhy, waithow);
388}
389
390APR_DECLARE(apr_status_t) apr_proc_wait(apr_proc_t *proc,
391                                        int *exitcode, apr_exit_why_e *exitwhy,
392                                        apr_wait_how_e waithow)
393{
394    pid_t pstatus;
395    int waitpid_options = WUNTRACED;
396    int exit_int;
397    int ignore;
398    apr_exit_why_e ignorewhy;
399
400    if (exitcode == NULL) {
401        exitcode = &ignore;
402    }
403
404    if (exitwhy == NULL) {
405        exitwhy = &ignorewhy;
406    }
407
408    if (waithow != APR_WAIT) {
409        waitpid_options |= WNOHANG;
410    }
411
412    /* If the pid is 0 then the process was started detached. There
413       is no need to wait since there is nothing to wait for on a
414       detached process.  Starting a process as non-detached and
415       then calling wait or waitpid could cause the thread to hang.
416       The reason for this is because NetWare does not have a way
417       to kill or even signal a process to be killed.  Starting
418       all processes as detached avoids the possibility of a
419       thread hanging. */
420    if (proc->pid == 0) {
421        *exitwhy = APR_PROC_EXIT;
422        *exitcode = 0;
423        return APR_CHILD_DONE;
424    }
425
426    if ((pstatus = waitpid(proc->pid, &exit_int, waitpid_options)) > 0) {
427        proc->pid = pstatus;
428
429        if (WIFEXITED(exit_int)) {
430            *exitwhy = APR_PROC_EXIT;
431            *exitcode = WEXITSTATUS(exit_int);
432        }
433        else if (WIFSIGNALED(exit_int)) {
434            *exitwhy = APR_PROC_SIGNAL;
435            *exitcode = WIFTERMSIG(exit_int);
436        }
437        else {
438            /* unexpected condition */
439            return APR_EGENERAL;
440        }
441
442        return APR_CHILD_DONE;
443    }
444    else if (pstatus == 0) {
445        return APR_CHILD_NOTDONE;
446    }
447
448    return errno;
449}
450
451#if APR_HAVE_STRUCT_RLIMIT
452APR_DECLARE(apr_status_t) apr_procattr_limit_set(apr_procattr_t *attr,
453                                                 apr_int32_t what,
454                                                 struct rlimit *limit)
455{
456    switch(what) {
457        case APR_LIMIT_CPU:
458#ifdef RLIMIT_CPU
459            attr->limit_cpu = limit;
460            break;
461#else
462            return APR_ENOTIMPL;
463#endif
464
465        case APR_LIMIT_MEM:
466#if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
467            attr->limit_mem = limit;
468            break;
469#else
470            return APR_ENOTIMPL;
471#endif
472
473        case APR_LIMIT_NPROC:
474#ifdef RLIMIT_NPROC
475            attr->limit_nproc = limit;
476            break;
477#else
478            return APR_ENOTIMPL;
479#endif
480
481        case APR_LIMIT_NOFILE:
482#ifdef RLIMIT_NOFILE
483            attr->limit_nofile = limit;
484            break;
485#else
486            return APR_ENOTIMPL;
487#endif
488
489    }
490    return APR_SUCCESS;
491}
492#endif /* APR_HAVE_STRUCT_RLIMIT */
493
494APR_DECLARE(apr_status_t) apr_procattr_user_set(apr_procattr_t *attr,
495                                                const char *username,
496                                                const char *password)
497{
498    /* Always return SUCCESS because NetWare threads don't run as a user */
499    return APR_SUCCESS;
500}
501
502APR_DECLARE(apr_status_t) apr_procattr_group_set(apr_procattr_t *attr,
503                                                 const char *groupname)
504{
505    /* Always return SUCCESS because NetWare threads don't run within a group */
506    return APR_SUCCESS;
507}
508