crypto/asn1/asn_mstbl.c

   1 /* asn_mstbl.c */
   2 /*
   3  * Written by Stephen Henson (steve@openssl.org) for the OpenSSL project
   4  * 2012.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 2012 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  */
  55
  56 #include <stdio.h>
  57 #include <ctype.h>
  58 #include <openssl/crypto.h>
  59 #include "cryptlib.h"
  60 #include <openssl/conf.h>
  61 #include <openssl/x509v3.h>
  62
  63 /* Multi string module: add table enstries from a given section */
  64
  65 static int do_tcreate(char *value, char *name);
  66
  67 static int stbl_module_init(CONF_IMODULE *md, const CONF *cnf)
  68 {
  69     int i;
  70     const char *stbl_section;
  71     STACK_OF(CONF_VALUE) *sktmp;
  72     CONF_VALUE *mval;
  73     stbl_section = CONF_imodule_get_value(md);
  74     if (!(sktmp = NCONF_get_section(cnf, stbl_section))) {
  75         ASN1err(ASN1_F_STBL_MODULE_INIT, ASN1_R_ERROR_LOADING_SECTION);
  76         return 0;
  77     }
  78     for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
  79         mval = sk_CONF_VALUE_value(sktmp, i);
  80         if (!do_tcreate(mval->value, mval->name)) {
  81             ASN1err(ASN1_F_STBL_MODULE_INIT, ASN1_R_INVALID_VALUE);
  82             return 0;
  83         }
  84     }
  85     return 1;
  86 }
  87
  88 static void stbl_module_finish(CONF_IMODULE *md)
  89 {
  90     ASN1_STRING_TABLE_cleanup();
  91 }
  92
  93 void ASN1_add_stable_module(void)
  94 {
  95     CONF_module_add("stbl_section", stbl_module_init, stbl_module_finish);
  96 }
  97
  98 /*
  99  * Create an table entry based on a name value pair. format is oid_name =
 100  * n1:v1, n2:v2,... where name is "min", "max", "mask" or "flags".
 101  */
 102
 103 static int do_tcreate(char *value, char *name)
 104 {
 105     char *eptr;
 106     int nid, i, rv = 0;
 107     long tbl_min = -1, tbl_max = -1;
 108     unsigned long tbl_mask = 0, tbl_flags = 0;
 109     STACK_OF(CONF_VALUE) *lst = NULL;
 110     CONF_VALUE *cnf = NULL;
 111     nid = OBJ_sn2nid(name);
 112     if (nid == NID_undef)
 113         nid = OBJ_ln2nid(name);
 114     if (nid == NID_undef)
 115         goto err;
 116     lst = X509V3_parse_list(value);
 117     if (!lst)
 118         goto err;
 119     for (i = 0; i < sk_CONF_VALUE_num(lst); i++) {
 120         cnf = sk_CONF_VALUE_value(lst, i);
 121         if (strcmp(cnf->name, "min") == 0) {
 122             tbl_min = strtoul(cnf->value, &eptr, 0);
 123             if (*eptr)
 124                 goto err;
 125         } else if (strcmp(cnf->name, "max") == 0) {
 126             tbl_max = strtoul(cnf->value, &eptr, 0);
 127             if (*eptr)
 128                 goto err;
 129         } else if (strcmp(cnf->name, "mask") == 0) {
 130             if (!ASN1_str2mask(cnf->value, &tbl_mask) || !tbl_mask)
 131                 goto err;
 132         } else if (strcmp(cnf->name, "flags") == 0) {
 133             if (strcmp(cnf->value, "nomask") == 0)
 134                 tbl_flags = STABLE_NO_MASK;
 135             else if (strcmp(cnf->value, "none") == 0)
 136                 tbl_flags = STABLE_FLAGS_CLEAR;
 137             else
 138                 goto err;
 139         } else
 140             goto err;
 141     }
 142     rv = 1;
 143  err:
 144     if (rv == 0) {
 145         ASN1err(ASN1_F_DO_TCREATE, ASN1_R_INVALID_STRING_TABLE_VALUE);
 146         if (cnf)
 147             ERR_add_error_data(4, "field=", cnf->name,
 148                                ", value=", cnf->value);
 149         else
 150             ERR_add_error_data(4, "name=", name, ", value=", value);
 151     } else {
 152         rv = ASN1_STRING_TABLE_add(nid, tbl_min, tbl_max,
 153                                    tbl_mask, tbl_flags);
 154         if (!rv)
 155             ASN1err(ASN1_F_DO_TCREATE, ERR_R_MALLOC_FAILURE);
 156     }
 157     sk_CONF_VALUE_pop_free(lst, X509V3_conf_free);
 158     return rv;
 159 }