crypto/LPdir_vms.c

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