1 /*
2 * Copyright 2004-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 /*
11 * This file is dual-licensed and is also available under the following
12 * terms:
13 *
14 * Copyright (c) 2004, Richard Levitte <richard@levitte.org>
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
19 * are met:
20 * 1. Redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #include <stddef.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <errno.h>
43 #include <descrip.h>
44 #include <namdef.h>
45 #include <rmsdef.h>
46 #include <libfildef.h>
47 #include <lib$routines.h>
48 #include <strdef.h>
49 #include <str$routines.h>
50 #include <stsdef.h>
51 #ifndef LPDIR_H
52 # include "LPdir.h"
53 #endif
54 #include "vms_rms.h"
55
56 /* Some compiler options hide EVMSERR. */
57 #ifndef EVMSERR
58 # define EVMSERR 65535 /* error for non-translatable VMS errors */
59 #endif
60
61 struct LP_dir_context_st {
62 unsigned long VMS_context;
63 char filespec[NAMX_MAXRSS + 1];
64 char result[NAMX_MAXRSS + 1];
65 struct dsc$descriptor_d filespec_dsc;
66 struct dsc$descriptor_d result_dsc;
67 };
68
LP_find_file(LP_DIR_CTX ** ctx,const char * directory)69 const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory)
70 {
71 int status;
72 char *p, *r;
73 size_t l;
74 unsigned long flags = 0;
75
76 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
77 #if __INITIAL_POINTER_SIZE == 64
78 # pragma pointer_size save
79 # pragma pointer_size 32
80 char *ctx_filespec_32p;
81 # pragma pointer_size restore
82 char ctx_filespec_32[NAMX_MAXRSS + 1];
83 #endif /* __INITIAL_POINTER_SIZE == 64 */
84
85 #ifdef NAML$C_MAXRSS
86 flags |= LIB$M_FIL_LONG_NAMES;
87 #endif
88
89 if (ctx == NULL || directory == NULL) {
90 errno = EINVAL;
91 return 0;
92 }
93
94 errno = 0;
95 if (*ctx == NULL) {
96 size_t filespeclen = strlen(directory);
97 char *filespec = NULL;
98
99 if (filespeclen == 0) {
100 errno = ENOENT;
101 return 0;
102 }
103
104 /* MUST be a VMS directory specification! Let's estimate if it is. */
105 if (directory[filespeclen - 1] != ']'
106 && directory[filespeclen - 1] != '>'
107 && directory[filespeclen - 1] != ':') {
108 errno = EINVAL;
109 return 0;
110 }
111
112 filespeclen += 4; /* "*.*;" */
113
114 if (filespeclen > NAMX_MAXRSS) {
115 errno = ENAMETOOLONG;
116 return 0;
117 }
118
119 *ctx = malloc(sizeof(**ctx));
120 if (*ctx == NULL) {
121 errno = ENOMEM;
122 return 0;
123 }
124 memset(*ctx, 0, sizeof(**ctx));
125
126 strcpy((*ctx)->filespec, directory);
127 strcat((*ctx)->filespec, "*.*;");
128
129 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
130 #if __INITIAL_POINTER_SIZE == 64
131 # define CTX_FILESPEC ctx_filespec_32p
132 /* Copy the file name to storage with a 32-bit pointer. */
133 ctx_filespec_32p = ctx_filespec_32;
134 strcpy(ctx_filespec_32p, (*ctx)->filespec);
135 #else /* __INITIAL_POINTER_SIZE == 64 */
136 # define CTX_FILESPEC (*ctx)->filespec
137 #endif /* __INITIAL_POINTER_SIZE == 64 [else] */
138
139 (*ctx)->filespec_dsc.dsc$w_length = filespeclen;
140 (*ctx)->filespec_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
141 (*ctx)->filespec_dsc.dsc$b_class = DSC$K_CLASS_S;
142 (*ctx)->filespec_dsc.dsc$a_pointer = CTX_FILESPEC;
143 }
144
145 (*ctx)->result_dsc.dsc$w_length = 0;
146 (*ctx)->result_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
147 (*ctx)->result_dsc.dsc$b_class = DSC$K_CLASS_D;
148 (*ctx)->result_dsc.dsc$a_pointer = 0;
149
150 status = lib$find_file(&(*ctx)->filespec_dsc, &(*ctx)->result_dsc,
151 &(*ctx)->VMS_context, 0, 0, 0, &flags);
152
153 if (status == RMS$_NMF) {
154 errno = 0;
155 vaxc$errno = status;
156 return NULL;
157 }
158
159 if (!$VMS_STATUS_SUCCESS(status)) {
160 errno = EVMSERR;
161 vaxc$errno = status;
162 return NULL;
163 }
164
165 /*
166 * Quick, cheap and dirty way to discard any device and directory, since
167 * we only want file names
168 */
169 l = (*ctx)->result_dsc.dsc$w_length;
170 p = (*ctx)->result_dsc.dsc$a_pointer;
171 r = p;
172 for (; *p; p++) {
173 if (*p == '^' && p[1] != '\0') { /* Take care of ODS-5 escapes */
174 p++;
175 } else if (*p == ':' || *p == '>' || *p == ']') {
176 l -= p + 1 - r;
177 r = p + 1;
178 } else if (*p == ';') {
179 l = p - r;
180 break;
181 }
182 }
183
184 strncpy((*ctx)->result, r, l);
185 (*ctx)->result[l] = '\0';
186 str$free1_dx(&(*ctx)->result_dsc);
187
188 return (*ctx)->result;
189 }
190
LP_find_file_end(LP_DIR_CTX ** ctx)191 int LP_find_file_end(LP_DIR_CTX **ctx)
192 {
193 if (ctx != NULL && *ctx != NULL) {
194 int status = lib$find_file_end(&(*ctx)->VMS_context);
195
196 free(*ctx);
197
198 if (!$VMS_STATUS_SUCCESS(status)) {
199 errno = EVMSERR;
200 vaxc$errno = status;
201 return 0;
202 }
203 return 1;
204 }
205 errno = EINVAL;
206 return 0;
207 }
208