2 * Copyright 1999-2017 The OpenSSL Project Authors. All Rights Reserved.
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
12 #include "internal/cryptlib.h"
13 #include <openssl/asn1.h>
14 #include <openssl/objects.h>
16 static STACK_OF(ASN1_STRING_TABLE) *stable = NULL;
17 static void st_free(ASN1_STRING_TABLE *tbl);
18 static int sk_table_cmp(const ASN1_STRING_TABLE *const *a,
19 const ASN1_STRING_TABLE *const *b);
22 * This is the global mask for the mbstring functions: this is use to mask
23 * out certain types (such as BMPString and UTF8String) because certain
24 * software (e.g. Netscape) has problems with them.
27 static unsigned long global_mask = B_ASN1_UTF8STRING;
29 void ASN1_STRING_set_default_mask(unsigned long mask)
34 unsigned long ASN1_STRING_get_default_mask(void)
40 * This function sets the default to various "flavours" of configuration.
41 * based on an ASCII string. Currently this is:
42 * MASK:XXXX : a numerical mask value.
43 * nobmp : Don't use BMPStrings (just Printable, T61).
44 * pkix : PKIX recommendation in RFC2459.
45 * utf8only : only use UTF8Strings (RFC2459 recommendation for 2004).
46 * default: the default value, Printable, T61, BMP.
49 int ASN1_STRING_set_default_mask_asc(const char *p)
54 if (strncmp(p, "MASK:", 5) == 0) {
57 mask = strtoul(p + 5, &end, 0);
60 } else if (strcmp(p, "nombstr") == 0)
61 mask = ~((unsigned long)(B_ASN1_BMPSTRING | B_ASN1_UTF8STRING));
62 else if (strcmp(p, "pkix") == 0)
63 mask = ~((unsigned long)B_ASN1_T61STRING);
64 else if (strcmp(p, "utf8only") == 0)
65 mask = B_ASN1_UTF8STRING;
66 else if (strcmp(p, "default") == 0)
70 ASN1_STRING_set_default_mask(mask);
75 * The following function generates an ASN1_STRING based on limits in a
76 * table. Frequently the types and length of an ASN1_STRING are restricted by
77 * a corresponding OID. For example certificates and certificate requests.
80 ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out,
81 const unsigned char *in, int inlen,
84 ASN1_STRING_TABLE *tbl;
85 ASN1_STRING *str = NULL;
91 tbl = ASN1_STRING_TABLE_get(nid);
94 if (!(tbl->flags & STABLE_NO_MASK))
96 ret = ASN1_mbstring_ncopy(out, in, inlen, inform, mask,
97 tbl->minsize, tbl->maxsize);
99 ret = ASN1_mbstring_copy(out, in, inlen, inform,
100 DIRSTRING_TYPE & global_mask);
108 * Now the tables and helper functions for the string table:
111 #include "tbl_standard.h"
113 static int sk_table_cmp(const ASN1_STRING_TABLE *const *a,
114 const ASN1_STRING_TABLE *const *b)
116 return (*a)->nid - (*b)->nid;
119 DECLARE_OBJ_BSEARCH_CMP_FN(ASN1_STRING_TABLE, ASN1_STRING_TABLE, table);
121 static int table_cmp(const ASN1_STRING_TABLE *a, const ASN1_STRING_TABLE *b)
123 return a->nid - b->nid;
126 IMPLEMENT_OBJ_BSEARCH_CMP_FN(ASN1_STRING_TABLE, ASN1_STRING_TABLE, table);
128 ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid)
131 ASN1_STRING_TABLE fnd;
135 idx = sk_ASN1_STRING_TABLE_find(stable, &fnd);
137 return sk_ASN1_STRING_TABLE_value(stable, idx);
139 return OBJ_bsearch_table(&fnd, tbl_standard, OSSL_NELEM(tbl_standard));
143 * Return a string table pointer which can be modified: either directly from
144 * table or a copy of an internal value added to the table.
147 static ASN1_STRING_TABLE *stable_get(int nid)
149 ASN1_STRING_TABLE *tmp, *rv;
151 /* Always need a string table so allocate one if NULL */
152 if (stable == NULL) {
153 stable = sk_ASN1_STRING_TABLE_new(sk_table_cmp);
157 tmp = ASN1_STRING_TABLE_get(nid);
158 if (tmp != NULL && tmp->flags & STABLE_FLAGS_MALLOC)
160 rv = OPENSSL_zalloc(sizeof(*rv));
163 if (!sk_ASN1_STRING_TABLE_push(stable, rv)) {
169 rv->minsize = tmp->minsize;
170 rv->maxsize = tmp->maxsize;
171 rv->mask = tmp->mask;
172 rv->flags = tmp->flags | STABLE_FLAGS_MALLOC;
177 rv->flags = STABLE_FLAGS_MALLOC;
182 int ASN1_STRING_TABLE_add(int nid,
183 long minsize, long maxsize, unsigned long mask,
186 ASN1_STRING_TABLE *tmp;
188 tmp = stable_get(nid);
190 ASN1err(ASN1_F_ASN1_STRING_TABLE_ADD, ERR_R_MALLOC_FAILURE);
194 tmp->minsize = minsize;
196 tmp->maxsize = maxsize;
200 tmp->flags = STABLE_FLAGS_MALLOC | flags;
204 void ASN1_STRING_TABLE_cleanup(void)
206 STACK_OF(ASN1_STRING_TABLE) *tmp;
212 sk_ASN1_STRING_TABLE_pop_free(tmp, st_free);
215 static void st_free(ASN1_STRING_TABLE *tbl)
217 if (tbl->flags & STABLE_FLAGS_MALLOC)