1/*
2 * Copyright 2012-2017 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#include <stdio.h>
11#include <openssl/crypto.h>
12#include "internal/cryptlib.h"
13#include <openssl/conf.h>
14#include <openssl/x509v3.h>
15
16/* Multi string module: add table entries from a given section */
17
18static int do_tcreate(const char *value, const char *name);
19
20static int stbl_module_init(CONF_IMODULE *md, const CONF *cnf)
21{
22 int i;
23 const char *stbl_section;
24 STACK_OF(CONF_VALUE) *sktmp;
25 CONF_VALUE *mval;
26
27 stbl_section = CONF_imodule_get_value(md);
28 if ((sktmp = NCONF_get_section(cnf, stbl_section)) == NULL) {
29 ASN1err(ASN1_F_STBL_MODULE_INIT, ASN1_R_ERROR_LOADING_SECTION);
30 return 0;
31 }
32 for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
33 mval = sk_CONF_VALUE_value(sktmp, i);
34 if (!do_tcreate(mval->value, mval->name)) {
35 ASN1err(ASN1_F_STBL_MODULE_INIT, ASN1_R_INVALID_VALUE);
36 return 0;
37 }
38 }
39 return 1;
40}
41
42static void stbl_module_finish(CONF_IMODULE *md)
43{
44 ASN1_STRING_TABLE_cleanup();
45}
46
47void ASN1_add_stable_module(void)
48{
49 CONF_module_add("stbl_section", stbl_module_init, stbl_module_finish);
50}
51
52/*
53 * Create an table entry based on a name value pair. format is oid_name =
54 * n1:v1, n2:v2,... where name is "min", "max", "mask" or "flags".
55 */
56
57static int do_tcreate(const char *value, const char *name)
58{
59 char *eptr;
60 int nid, i, rv = 0;
61 long tbl_min = -1, tbl_max = -1;
62 unsigned long tbl_mask = 0, tbl_flags = 0;
63 STACK_OF(CONF_VALUE) *lst = NULL;
64 CONF_VALUE *cnf = NULL;
65 nid = OBJ_sn2nid(name);
66 if (nid == NID_undef)
67 nid = OBJ_ln2nid(name);
68 if (nid == NID_undef)
69 goto err;
70 lst = X509V3_parse_list(value);
71 if (!lst)
72 goto err;
73 for (i = 0; i < sk_CONF_VALUE_num(lst); i++) {
74 cnf = sk_CONF_VALUE_value(lst, i);
75 if (strcmp(cnf->name, "min") == 0) {
76 tbl_min = strtoul(cnf->value, &eptr, 0);
77 if (*eptr)
78 goto err;
79 } else if (strcmp(cnf->name, "max") == 0) {
80 tbl_max = strtoul(cnf->value, &eptr, 0);
81 if (*eptr)
82 goto err;
83 } else if (strcmp(cnf->name, "mask") == 0) {
84 if (!ASN1_str2mask(cnf->value, &tbl_mask) || !tbl_mask)
85 goto err;
86 } else if (strcmp(cnf->name, "flags") == 0) {
87 if (strcmp(cnf->value, "nomask") == 0)
88 tbl_flags = STABLE_NO_MASK;
89 else if (strcmp(cnf->value, "none") == 0)
90 tbl_flags = STABLE_FLAGS_CLEAR;
91 else
92 goto err;
93 } else
94 goto err;
95 }
96 rv = 1;
97 err:
98 if (rv == 0) {
99 ASN1err(ASN1_F_DO_TCREATE, ASN1_R_INVALID_STRING_TABLE_VALUE);
100 if (cnf)
101 ERR_add_error_data(4, "field=", cnf->name,
102 ", value=", cnf->value);
103 else
104 ERR_add_error_data(4, "name=", name, ", value=", value);
105 } else {
106 rv = ASN1_STRING_TABLE_add(nid, tbl_min, tbl_max,
107 tbl_mask, tbl_flags);
108 if (!rv)
109 ASN1err(ASN1_F_DO_TCREATE, ERR_R_MALLOC_FAILURE);
110 }
111 sk_CONF_VALUE_pop_free(lst, X509V3_conf_free);
112 return rv;
113}
114