summaryrefslogtreecommitdiffstats
path: root/crypto/LPdir_vms.c
blob: e35363fd6614443db7984517be54554739a4381a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
/*
 * Copyright 2004-2016 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

/*
 * This file is dual-licensed and is also available under the following
 * terms:
 *
 * Copyright (c) 2004, Richard Levitte <richard@levitte.org>
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS 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 COPYRIGHT
 * OWNER OR 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.
 */

#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <descrip.h>
#include <namdef.h>
#include <rmsdef.h>
#include <libfildef.h>
#include <lib$routines.h>
#include <strdef.h>
#include <str$routines.h>
#include <stsdef.h>
#ifndef LPDIR_H
# include "LPdir.h"
#endif
#include "vms_rms.h"

/* Some compiler options hide EVMSERR. */
#ifndef EVMSERR
# define EVMSERR        65535   /* error for non-translatable VMS errors */
#endif

struct LP_dir_context_st {
    unsigned long VMS_context;
    char filespec[NAMX_MAXRSS + 1];
    char result[NAMX_MAXRSS + 1];
    struct dsc$descriptor_d filespec_dsc;
    struct dsc$descriptor_d result_dsc;
};

const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory)
{
    int status;
    char *p, *r;
    size_t l;
    unsigned long flags = 0;

/* Arrange 32-bit pointer to (copied) string storage, if needed. */
#if __INITIAL_POINTER_SIZE == 64
# pragma pointer_size save
# pragma pointer_size 32
    char *ctx_filespec_32p;
# pragma pointer_size restore
    char ctx_filespec_32[NAMX_MAXRSS + 1];
#endif                          /* __INITIAL_POINTER_SIZE == 64 */

#ifdef NAML$C_MAXRSS
    flags |= LIB$M_FIL_LONG_NAMES;
#endif

    if (ctx == NULL || directory == NULL) {
        errno = EINVAL;
        return 0;
    }

    errno = 0;
    if (*ctx == NULL) {
        size_t filespeclen = strlen(directory);
        char *filespec = NULL;

        if (filespeclen == 0) {
            errno = ENOENT;
            return 0;
        }

        /* MUST be a VMS directory specification!  Let's estimate if it is. */
        if (directory[filespeclen - 1] != ']'
            && directory[filespeclen - 1] != '>'
            && directory[filespeclen - 1] != ':') {
            errno = EINVAL;
            return 0;
        }

        filespeclen += 4;       /* "*.*;" */

        if (filespeclen > NAMX_MAXRSS) {
            errno = ENAMETOOLONG;
            return 0;
        }

        *ctx = malloc(sizeof(**ctx));
        if (*ctx == NULL) {
            errno = ENOMEM;
            return 0;
        }
        memset(*ctx, 0, sizeof(**ctx));

        strcpy((*ctx)->filespec, directory);
        strcat((*ctx)->filespec, "*.*;");

/* Arrange 32-bit pointer to (copied) string storage, if needed. */
#if __INITIAL_POINTER_SIZE == 64
# define CTX_FILESPEC ctx_filespec_32p
        /* Copy the file name to storage with a 32-bit pointer. */
        ctx_filespec_32p = ctx_filespec_32;
        strcpy(ctx_filespec_32p, (*ctx)->filespec);
#else                           /* __INITIAL_POINTER_SIZE == 64 */
# define CTX_FILESPEC (*ctx)->filespec
#endif                          /* __INITIAL_POINTER_SIZE == 64 [else] */

        (*ctx)->filespec_dsc.dsc$w_length = filespeclen;
        (*ctx)->filespec_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
        (*ctx)->filespec_dsc.dsc$b_class = DSC$K_CLASS_S;
        (*ctx)->filespec_dsc.dsc$a_pointer = CTX_FILESPEC;
    }

    (*ctx)->result_dsc.dsc$w_length = 0;
    (*ctx)->result_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
    (*ctx)->result_dsc.dsc$b_class = DSC$K_CLASS_D;
    (*ctx)->result_dsc.dsc$a_pointer = 0;

    status = lib$find_file(&(*ctx)->filespec_dsc, &(*ctx)->result_dsc,
                           &(*ctx)->VMS_context, 0, 0, 0, &flags);

    if (status == RMS$_NMF) {
        errno = 0;
        vaxc$errno = status;
        return NULL;
    }

    if (!$VMS_STATUS_SUCCESS(status)) {
        errno = EVMSERR;
        vaxc$errno = status;
        return NULL;
    }

    /*
     * Quick, cheap and dirty way to discard any device and directory, since
     * we only want file names
     */
    l = (*ctx)->result_dsc.dsc$w_length;
    p = (*ctx)->result_dsc.dsc$a_pointer;
    r = p;
    for (; *p; p++) {
        if (*p == '^' && p[1] != '\0') { /* Take care of ODS-5 escapes */
            p++;
        } else if (*p == ':' || *p == '>' || *p == ']') {
            l -= p + 1 - r;
            r = p + 1;
        } else if (*p == ';') {
            l = p - r;
            break;
        }
    }

    strncpy((*ctx)->result, r, l);
    (*ctx)->result[l] = '\0';
    str$free1_dx(&(*ctx)->result_dsc);

    return (*ctx)->result;
}

int LP_find_file_end(LP_DIR_CTX **ctx)
{
    if (ctx != NULL && *ctx != NULL) {
        int status = lib$find_file_end(&(*ctx)->VMS_context);

        free(*ctx);

        if (!$VMS_STATUS_SUCCESS(status)) {
            errno = EVMSERR;
            vaxc$errno = status;
            return 0;
        }
        return 1;
    }
    errno = EINVAL;
    return 0;
}