/* $OpenBSD: x509_obj.c,v 1.25 2025/01/27 04:24:46 tb Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include <stdint.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <openssl/asn1.h> #include <openssl/objects.h> #include <openssl/x509.h> #include "bytestring.h" #include "x509_local.h" static int X509_NAME_ENTRY_add_object_cbb(CBB *cbb, const ASN1_OBJECT *aobj) { const char *str; char buf[80]; int nid; /* Prefer SN over LN, and fall back to textual representation of OID. */ if ((nid = OBJ_obj2nid(aobj)) != NID_undef) { if ((str = OBJ_nid2sn(nid)) != NULL) return CBB_add_bytes(cbb, str, strlen(str)); if ((str = OBJ_nid2ln(nid)) != NULL) return CBB_add_bytes(cbb, str, strlen(str)); } if (OBJ_obj2txt(buf, sizeof(buf), aobj, 1) == 0) return 0; return CBB_add_bytes(cbb, buf, strlen(buf)); } static int X509_NAME_ENTRY_add_u8_cbb(CBB *cbb, uint8_t u8) { static const char hex[] = "0123456789ABCDEF"; if (' ' <= u8 && u8 <= '~') return CBB_add_u8(cbb, u8); if (!CBB_add_u8(cbb, '\\')) return 0; if (!CBB_add_u8(cbb, 'x')) return 0; if (!CBB_add_u8(cbb, hex[u8 >> 4])) return 0; if (!CBB_add_u8(cbb, hex[u8 & 0xf])) return 0; return 1; } static int X509_NAME_ENTRY_add_value_cbb(CBB *cbb, const ASN1_STRING *astr) { CBS cbs; uint8_t u8; size_t i; int mask[4] = { 1, 1, 1, 1 }; if (astr->type == V_ASN1_GENERALSTRING && astr->length % 4 == 0) { int gs_mask[4] = { 0, 0, 0, 0 }; i = 0; CBS_init(&cbs, astr->data, astr->length); while (CBS_len(&cbs) > 0) { if (!CBS_get_u8(&cbs, &u8)) return 0; gs_mask[i++ & 0x3] |= u8; } if (gs_mask[0] == 0 && gs_mask[1] == 0 && gs_mask[2] == 0) mask[0] = mask[1] = mask[2] = 0; } i = 0; CBS_init(&cbs, astr->data, astr->length); while (CBS_len(&cbs) > 0) { if (!CBS_get_u8(&cbs, &u8)) return 0; if (mask[i++ & 0x3] == 0) continue; if (!X509_NAME_ENTRY_add_u8_cbb(cbb, u8)) return 0; } return 1; } int X509_NAME_ENTRY_add_cbb(CBB *cbb, const X509_NAME_ENTRY *ne) { if (!X509_NAME_ENTRY_add_object_cbb(cbb, ne->object)) return 0; if (!CBB_add_u8(cbb, '=')) return 0; if (!X509_NAME_ENTRY_add_value_cbb(cbb, ne->value)) return 0; return 1; } char * X509_NAME_oneline(const X509_NAME *a, char *buf, int len) { CBB cbb; const X509_NAME_ENTRY *ne; uint8_t *line = NULL; size_t line_len = 0; int i; if (!CBB_init(&cbb, 0)) goto err; for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) { ne = sk_X509_NAME_ENTRY_value(a->entries, i); if (!CBB_add_u8(&cbb, '/')) goto err; if (!X509_NAME_ENTRY_add_cbb(&cbb, ne)) goto err; } if (!CBB_add_u8(&cbb, '\0')) goto err; if (!CBB_finish(&cbb, &line, &line_len)) goto err; if (buf == NULL) return line; strlcpy(buf, line, len); free(line); return buf; err: CBB_cleanup(&cbb); return NULL; } LCRYPTO_ALIAS(X509_NAME_oneline);
