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#define INCL_DOSERRORS
18#include "apr_arch_file_io.h"
19#include "apr_file_io.h"
20#include "apr_general.h"
21#include "apr_lib.h"
22#include "apr_strings.h"
23#include "apr_portable.h"
24#include <string.h>
25#include <process.h>
26
27APR_DECLARE(apr_status_t) apr_file_pipe_create(apr_file_t **in, apr_file_t **out, apr_pool_t *pool)
28{
29    ULONG filedes[2];
30    ULONG rc, action;
31    static int id = 0;
32    char pipename[50];
33
34    sprintf(pipename, "/pipe/%d.%d", getpid(), id++);
35    rc = DosCreateNPipe(pipename, filedes, NP_ACCESS_INBOUND, NP_NOWAIT|1, 4096, 4096, 0);
36
37    if (rc)
38        return APR_FROM_OS_ERROR(rc);
39
40    rc = DosConnectNPipe(filedes[0]);
41
42    if (rc && rc != ERROR_PIPE_NOT_CONNECTED) {
43        DosClose(filedes[0]);
44        return APR_FROM_OS_ERROR(rc);
45    }
46
47    rc = DosOpen (pipename, filedes+1, &action, 0, FILE_NORMAL,
48                  OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW,
49                  OPEN_ACCESS_WRITEONLY | OPEN_SHARE_DENYREADWRITE,
50                  NULL);
51
52    if (rc) {
53        DosClose(filedes[0]);
54        return APR_FROM_OS_ERROR(rc);
55    }
56
57    (*in) = (apr_file_t *)apr_palloc(pool, sizeof(apr_file_t));
58    rc = DosCreateEventSem(NULL, &(*in)->pipeSem, DC_SEM_SHARED, FALSE);
59
60    if (rc) {
61        DosClose(filedes[0]);
62        DosClose(filedes[1]);
63        return APR_FROM_OS_ERROR(rc);
64    }
65
66    rc = DosSetNPipeSem(filedes[0], (HSEM)(*in)->pipeSem, 1);
67
68    if (!rc) {
69        rc = DosSetNPHState(filedes[0], NP_WAIT);
70    }
71
72    if (rc) {
73        DosClose(filedes[0]);
74        DosClose(filedes[1]);
75        DosCloseEventSem((*in)->pipeSem);
76        return APR_FROM_OS_ERROR(rc);
77    }
78
79    (*in)->pool = pool;
80    (*in)->filedes = filedes[0];
81    (*in)->fname = apr_pstrdup(pool, pipename);
82    (*in)->isopen = TRUE;
83    (*in)->buffered = FALSE;
84    (*in)->flags = 0;
85    (*in)->pipe = 1;
86    (*in)->timeout = -1;
87    (*in)->blocking = BLK_ON;
88    apr_pool_cleanup_register(pool, *in, apr_file_cleanup, apr_pool_cleanup_null);
89
90    (*out) = (apr_file_t *)apr_palloc(pool, sizeof(apr_file_t));
91    (*out)->pool = pool;
92    (*out)->filedes = filedes[1];
93    (*out)->fname = apr_pstrdup(pool, pipename);
94    (*out)->isopen = TRUE;
95    (*out)->buffered = FALSE;
96    (*out)->flags = 0;
97    (*out)->pipe = 1;
98    (*out)->timeout = -1;
99    (*out)->blocking = BLK_ON;
100    apr_pool_cleanup_register(pool, *out, apr_file_cleanup, apr_pool_cleanup_null);
101
102    return APR_SUCCESS;
103}
104
105
106
107APR_DECLARE(apr_status_t) apr_file_pipe_create_ex(apr_file_t **in,
108                                                  apr_file_t **out,
109                                                  apr_int32_t blocking,
110                                                  apr_pool_t *pool)
111{
112    apr_status_t status;
113
114    if ((status = apr_file_pipe_create(in, out, pool)) != APR_SUCCESS)
115        return status;
116
117    switch (blocking) {
118        case APR_FULL_BLOCK:
119            break;
120        case APR_READ_BLOCK:
121            apr_file_pipe_timeout_set(*out, 0);
122            break;
123        case APR_WRITE_BLOCK:
124            apr_file_pipe_timeout_set(*in, 0);
125            break;
126        default:
127            apr_file_pipe_timeout_set(*out, 0);
128            apr_file_pipe_timeout_set(*in, 0);
129    }
130
131    return APR_SUCCESS;
132}
133
134
135
136APR_DECLARE(apr_status_t) apr_file_namedpipe_create(const char *filename, apr_fileperms_t perm, apr_pool_t *pool)
137{
138    /* Not yet implemented, interface not suitable */
139    return APR_ENOTIMPL;
140}
141
142
143
144APR_DECLARE(apr_status_t) apr_file_pipe_timeout_set(apr_file_t *thepipe, apr_interval_time_t timeout)
145{
146    if (thepipe->pipe == 1) {
147        thepipe->timeout = timeout;
148
149        if (thepipe->timeout >= 0) {
150            if (thepipe->blocking != BLK_OFF) {
151                thepipe->blocking = BLK_OFF;
152                return APR_FROM_OS_ERROR(DosSetNPHState(thepipe->filedes, NP_NOWAIT));
153            }
154        }
155        else if (thepipe->timeout == -1) {
156            if (thepipe->blocking != BLK_ON) {
157                thepipe->blocking = BLK_ON;
158                return APR_FROM_OS_ERROR(DosSetNPHState(thepipe->filedes, NP_WAIT));
159            }
160        }
161    }
162    return APR_EINVAL;
163}
164
165
166
167APR_DECLARE(apr_status_t) apr_file_pipe_timeout_get(apr_file_t *thepipe, apr_interval_time_t *timeout)
168{
169    if (thepipe->pipe == 1) {
170        *timeout = thepipe->timeout;
171        return APR_SUCCESS;
172    }
173    return APR_EINVAL;
174}
175
176
177
178APR_DECLARE(apr_status_t) apr_os_pipe_put_ex(apr_file_t **file,
179                                             apr_os_file_t *thefile,
180                                             int register_cleanup,
181                                             apr_pool_t *pool)
182{
183    (*file) = apr_pcalloc(pool, sizeof(apr_file_t));
184    (*file)->pool = pool;
185    (*file)->isopen = TRUE;
186    (*file)->pipe = 1;
187    (*file)->blocking = BLK_UNKNOWN; /* app needs to make a timeout call */
188    (*file)->timeout = -1;
189    (*file)->filedes = *thefile;
190
191    if (register_cleanup) {
192        apr_pool_cleanup_register(pool, *file, apr_file_cleanup,
193                                  apr_pool_cleanup_null);
194    }
195
196    return APR_SUCCESS;
197}
198
199
200
201APR_DECLARE(apr_status_t) apr_os_pipe_put(apr_file_t **file,
202                                          apr_os_file_t *thefile,
203                                          apr_pool_t *pool)
204{
205    return apr_os_pipe_put_ex(file, thefile, 0, pool);
206}
207