f59f23c383
Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Rich Salz <rsalz@openssl.org> (Merged from https://github.com/openssl/openssl/pull/997)
287 lines
8.5 KiB
C
287 lines
8.5 KiB
C
/*
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* Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include "internal/cryptlib.h"
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#include <openssl/asn1.h>
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#include <openssl/objects.h>
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static STACK_OF(ASN1_STRING_TABLE) *stable = NULL;
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static void st_free(ASN1_STRING_TABLE *tbl);
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static int sk_table_cmp(const ASN1_STRING_TABLE *const *a,
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const ASN1_STRING_TABLE *const *b);
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/*
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* This is the global mask for the mbstring functions: this is use to mask
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* out certain types (such as BMPString and UTF8String) because certain
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* software (e.g. Netscape) has problems with them.
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*/
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static unsigned long global_mask = B_ASN1_UTF8STRING;
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void ASN1_STRING_set_default_mask(unsigned long mask)
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{
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global_mask = mask;
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}
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unsigned long ASN1_STRING_get_default_mask(void)
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{
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return global_mask;
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}
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/*-
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* This function sets the default to various "flavours" of configuration.
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* based on an ASCII string. Currently this is:
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* MASK:XXXX : a numerical mask value.
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* nobmp : Don't use BMPStrings (just Printable, T61).
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* pkix : PKIX recommendation in RFC2459.
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* utf8only : only use UTF8Strings (RFC2459 recommendation for 2004).
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* default: the default value, Printable, T61, BMP.
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*/
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int ASN1_STRING_set_default_mask_asc(const char *p)
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{
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unsigned long mask;
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char *end;
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if (strncmp(p, "MASK:", 5) == 0) {
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if (!p[5])
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return 0;
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mask = strtoul(p + 5, &end, 0);
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if (*end)
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return 0;
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} else if (strcmp(p, "nombstr") == 0)
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mask = ~((unsigned long)(B_ASN1_BMPSTRING | B_ASN1_UTF8STRING));
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else if (strcmp(p, "pkix") == 0)
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mask = ~((unsigned long)B_ASN1_T61STRING);
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else if (strcmp(p, "utf8only") == 0)
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mask = B_ASN1_UTF8STRING;
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else if (strcmp(p, "default") == 0)
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mask = 0xFFFFFFFFL;
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else
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return 0;
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ASN1_STRING_set_default_mask(mask);
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return 1;
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}
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/*
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* The following function generates an ASN1_STRING based on limits in a
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* table. Frequently the types and length of an ASN1_STRING are restricted by
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* a corresponding OID. For example certificates and certificate requests.
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*/
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ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out,
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const unsigned char *in, int inlen,
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int inform, int nid)
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{
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ASN1_STRING_TABLE *tbl;
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ASN1_STRING *str = NULL;
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unsigned long mask;
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int ret;
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if (!out)
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out = &str;
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tbl = ASN1_STRING_TABLE_get(nid);
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if (tbl) {
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mask = tbl->mask;
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if (!(tbl->flags & STABLE_NO_MASK))
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mask &= global_mask;
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ret = ASN1_mbstring_ncopy(out, in, inlen, inform, mask,
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tbl->minsize, tbl->maxsize);
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} else
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ret =
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ASN1_mbstring_copy(out, in, inlen, inform,
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DIRSTRING_TYPE & global_mask);
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if (ret <= 0)
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return NULL;
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return *out;
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}
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/*
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* Now the tables and helper functions for the string table:
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*/
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/* size limits: this stuff is taken straight from RFC3280 */
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#define ub_name 32768
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#define ub_common_name 64
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#define ub_locality_name 128
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#define ub_state_name 128
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#define ub_organization_name 64
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#define ub_organization_unit_name 64
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#define ub_title 64
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#define ub_email_address 128
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#define ub_serial_number 64
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/* From RFC4524 */
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#define ub_rfc822_mailbox 256
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/* This table must be kept in NID order */
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static const ASN1_STRING_TABLE tbl_standard[] = {
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{NID_commonName, 1, ub_common_name, DIRSTRING_TYPE, 0},
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{NID_countryName, 2, 2, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
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{NID_localityName, 1, ub_locality_name, DIRSTRING_TYPE, 0},
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{NID_stateOrProvinceName, 1, ub_state_name, DIRSTRING_TYPE, 0},
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{NID_organizationName, 1, ub_organization_name, DIRSTRING_TYPE, 0},
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{NID_organizationalUnitName, 1, ub_organization_unit_name, DIRSTRING_TYPE,
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0},
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{NID_pkcs9_emailAddress, 1, ub_email_address, B_ASN1_IA5STRING,
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STABLE_NO_MASK},
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{NID_pkcs9_unstructuredName, 1, -1, PKCS9STRING_TYPE, 0},
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{NID_pkcs9_challengePassword, 1, -1, PKCS9STRING_TYPE, 0},
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{NID_pkcs9_unstructuredAddress, 1, -1, DIRSTRING_TYPE, 0},
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{NID_givenName, 1, ub_name, DIRSTRING_TYPE, 0},
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{NID_surname, 1, ub_name, DIRSTRING_TYPE, 0},
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{NID_initials, 1, ub_name, DIRSTRING_TYPE, 0},
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{NID_serialNumber, 1, ub_serial_number, B_ASN1_PRINTABLESTRING,
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STABLE_NO_MASK},
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{NID_friendlyName, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK},
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{NID_name, 1, ub_name, DIRSTRING_TYPE, 0},
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{NID_dnQualifier, -1, -1, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
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{NID_domainComponent, 1, -1, B_ASN1_IA5STRING, STABLE_NO_MASK},
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{NID_ms_csp_name, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK},
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{NID_rfc822Mailbox, 1, ub_rfc822_mailbox, B_ASN1_IA5STRING,
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STABLE_NO_MASK},
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{NID_INN, 1, 12, B_ASN1_NUMERICSTRING, STABLE_NO_MASK},
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{NID_OGRN, 1, 13, B_ASN1_NUMERICSTRING, STABLE_NO_MASK},
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{NID_SNILS, 1, 11, B_ASN1_NUMERICSTRING, STABLE_NO_MASK}
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};
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static int sk_table_cmp(const ASN1_STRING_TABLE *const *a,
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const ASN1_STRING_TABLE *const *b)
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{
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return (*a)->nid - (*b)->nid;
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}
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DECLARE_OBJ_BSEARCH_CMP_FN(ASN1_STRING_TABLE, ASN1_STRING_TABLE, table);
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static int table_cmp(const ASN1_STRING_TABLE *a, const ASN1_STRING_TABLE *b)
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{
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return a->nid - b->nid;
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}
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IMPLEMENT_OBJ_BSEARCH_CMP_FN(ASN1_STRING_TABLE, ASN1_STRING_TABLE, table);
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ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid)
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{
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int idx;
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ASN1_STRING_TABLE fnd;
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fnd.nid = nid;
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if (stable) {
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idx = sk_ASN1_STRING_TABLE_find(stable, &fnd);
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if (idx >= 0)
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return sk_ASN1_STRING_TABLE_value(stable, idx);
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}
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return OBJ_bsearch_table(&fnd, tbl_standard, OSSL_NELEM(tbl_standard));
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}
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/*
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* Return a string table pointer which can be modified: either directly from
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* table or a copy of an internal value added to the table.
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*/
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static ASN1_STRING_TABLE *stable_get(int nid)
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{
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ASN1_STRING_TABLE *tmp, *rv;
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/* Always need a string table so allocate one if NULL */
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if (stable == NULL) {
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stable = sk_ASN1_STRING_TABLE_new(sk_table_cmp);
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if (stable == NULL)
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return NULL;
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}
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tmp = ASN1_STRING_TABLE_get(nid);
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if (tmp && tmp->flags & STABLE_FLAGS_MALLOC)
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return tmp;
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rv = OPENSSL_zalloc(sizeof(*rv));
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if (rv == NULL)
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return NULL;
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if (!sk_ASN1_STRING_TABLE_push(stable, rv)) {
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OPENSSL_free(rv);
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return NULL;
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}
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if (tmp) {
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rv->nid = tmp->nid;
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rv->minsize = tmp->minsize;
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rv->maxsize = tmp->maxsize;
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rv->mask = tmp->mask;
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rv->flags = tmp->flags | STABLE_FLAGS_MALLOC;
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} else {
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rv->minsize = -1;
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rv->maxsize = -1;
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rv->flags = STABLE_FLAGS_MALLOC;
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}
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return rv;
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}
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int ASN1_STRING_TABLE_add(int nid,
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long minsize, long maxsize, unsigned long mask,
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unsigned long flags)
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{
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ASN1_STRING_TABLE *tmp;
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tmp = stable_get(nid);
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if (!tmp) {
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ASN1err(ASN1_F_ASN1_STRING_TABLE_ADD, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if (minsize >= 0)
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tmp->minsize = minsize;
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if (maxsize >= 0)
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tmp->maxsize = maxsize;
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if (mask)
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tmp->mask = mask;
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if (flags)
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tmp->flags = STABLE_FLAGS_MALLOC | flags;
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return 1;
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}
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void ASN1_STRING_TABLE_cleanup(void)
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{
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STACK_OF(ASN1_STRING_TABLE) *tmp;
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tmp = stable;
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if (!tmp)
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return;
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stable = NULL;
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sk_ASN1_STRING_TABLE_pop_free(tmp, st_free);
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}
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static void st_free(ASN1_STRING_TABLE *tbl)
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{
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if (tbl->flags & STABLE_FLAGS_MALLOC)
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OPENSSL_free(tbl);
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}
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#ifdef STRING_TABLE_TEST
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main()
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{
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ASN1_STRING_TABLE *tmp;
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int i, last_nid = -1;
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for (tmp = tbl_standard, i = 0; i < OSSL_NELEM(tbl_standard); i++, tmp++) {
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if (tmp->nid < last_nid) {
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last_nid = 0;
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break;
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}
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last_nid = tmp->nid;
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}
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if (last_nid != 0) {
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printf("Table order OK\n");
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exit(0);
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}
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for (tmp = tbl_standard, i = 0; i < OSSL_NELEM(tbl_standard); i++, tmp++)
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printf("Index %d, NID %d, Name=%s\n", i, tmp->nid,
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OBJ_nid2ln(tmp->nid));
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}
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#endif
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