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919 lines
24 KiB
919 lines
24 KiB
/* v3_utl.c */ |
|
/* |
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* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
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* project. |
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*/ |
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/* ==================================================================== |
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* Copyright (c) 1999-2003 The OpenSSL Project. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. All advertising materials mentioning features or use of this |
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* software must display the following acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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* |
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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* endorse or promote products derived from this software without |
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* prior written permission. For written permission, please contact |
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* licensing@OpenSSL.org. |
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* |
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* 5. Products derived from this software may not be called "OpenSSL" |
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* nor may "OpenSSL" appear in their names without prior written |
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* permission of the OpenSSL Project. |
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* |
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* 6. Redistributions of any form whatsoever must retain the following |
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* acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This product includes cryptographic software written by Eric Young |
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* (eay@cryptsoft.com). This product includes software written by Tim |
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* Hudson (tjh@cryptsoft.com). |
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* |
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*/ |
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/* X509 v3 extension utilities */ |
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|
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#include <stdio.h> |
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#include <ctype.h> |
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#include "cryptlib.h" |
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#include <openssl/conf.h> |
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#include <openssl/x509v3.h> |
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#include <openssl/bn.h> |
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|
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static char *strip_spaces(char *name); |
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static int sk_strcmp(const char *const *a, const char *const *b); |
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static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name, |
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GENERAL_NAMES *gens); |
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static void str_free(OPENSSL_STRING str); |
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static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email); |
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|
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static int ipv4_from_asc(unsigned char *v4, const char *in); |
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static int ipv6_from_asc(unsigned char *v6, const char *in); |
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static int ipv6_cb(const char *elem, int len, void *usr); |
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static int ipv6_hex(unsigned char *out, const char *in, int inlen); |
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|
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/* Add a CONF_VALUE name value pair to stack */ |
|
|
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int X509V3_add_value(const char *name, const char *value, |
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STACK_OF(CONF_VALUE) **extlist) |
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{ |
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CONF_VALUE *vtmp = NULL; |
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char *tname = NULL, *tvalue = NULL; |
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if (name && !(tname = BUF_strdup(name))) |
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goto err; |
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if (value && !(tvalue = BUF_strdup(value))) |
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goto err; |
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if (!(vtmp = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) |
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goto err; |
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if (!*extlist && !(*extlist = sk_CONF_VALUE_new_null())) |
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goto err; |
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vtmp->section = NULL; |
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vtmp->name = tname; |
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vtmp->value = tvalue; |
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if (!sk_CONF_VALUE_push(*extlist, vtmp)) |
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goto err; |
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return 1; |
|
err: |
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X509V3err(X509V3_F_X509V3_ADD_VALUE, ERR_R_MALLOC_FAILURE); |
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if (vtmp) |
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OPENSSL_free(vtmp); |
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if (tname) |
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OPENSSL_free(tname); |
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if (tvalue) |
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OPENSSL_free(tvalue); |
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return 0; |
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} |
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|
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int X509V3_add_value_uchar(const char *name, const unsigned char *value, |
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STACK_OF(CONF_VALUE) **extlist) |
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{ |
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return X509V3_add_value(name, (const char *)value, extlist); |
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} |
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|
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/* Free function for STACK_OF(CONF_VALUE) */ |
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|
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void X509V3_conf_free(CONF_VALUE *conf) |
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{ |
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if (!conf) |
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return; |
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if (conf->name) |
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OPENSSL_free(conf->name); |
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if (conf->value) |
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OPENSSL_free(conf->value); |
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if (conf->section) |
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OPENSSL_free(conf->section); |
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OPENSSL_free(conf); |
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} |
|
|
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int X509V3_add_value_bool(const char *name, int asn1_bool, |
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STACK_OF(CONF_VALUE) **extlist) |
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{ |
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if (asn1_bool) |
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return X509V3_add_value(name, "TRUE", extlist); |
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return X509V3_add_value(name, "FALSE", extlist); |
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} |
|
|
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int X509V3_add_value_bool_nf(char *name, int asn1_bool, |
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STACK_OF(CONF_VALUE) **extlist) |
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{ |
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if (asn1_bool) |
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return X509V3_add_value(name, "TRUE", extlist); |
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return 1; |
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} |
|
|
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char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a) |
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{ |
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BIGNUM *bntmp = NULL; |
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char *strtmp = NULL; |
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if (!a) |
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return NULL; |
|
if (!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) || |
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!(strtmp = BN_bn2dec(bntmp))) |
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X509V3err(X509V3_F_I2S_ASN1_ENUMERATED, ERR_R_MALLOC_FAILURE); |
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BN_free(bntmp); |
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return strtmp; |
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} |
|
|
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char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a) |
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{ |
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BIGNUM *bntmp = NULL; |
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char *strtmp = NULL; |
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if (!a) |
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return NULL; |
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if (!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) || |
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!(strtmp = BN_bn2dec(bntmp))) |
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X509V3err(X509V3_F_I2S_ASN1_INTEGER, ERR_R_MALLOC_FAILURE); |
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BN_free(bntmp); |
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return strtmp; |
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} |
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|
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ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value) |
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{ |
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BIGNUM *bn = NULL; |
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ASN1_INTEGER *aint; |
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int isneg, ishex; |
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int ret; |
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if (!value) { |
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X509V3err(X509V3_F_S2I_ASN1_INTEGER, X509V3_R_INVALID_NULL_VALUE); |
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return 0; |
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} |
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bn = BN_new(); |
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if (value[0] == '-') { |
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value++; |
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isneg = 1; |
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} else |
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isneg = 0; |
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|
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if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) { |
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value += 2; |
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ishex = 1; |
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} else |
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ishex = 0; |
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|
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if (ishex) |
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ret = BN_hex2bn(&bn, value); |
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else |
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ret = BN_dec2bn(&bn, value); |
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|
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if (!ret || value[ret]) { |
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BN_free(bn); |
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X509V3err(X509V3_F_S2I_ASN1_INTEGER, X509V3_R_BN_DEC2BN_ERROR); |
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return 0; |
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} |
|
|
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if (isneg && BN_is_zero(bn)) |
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isneg = 0; |
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|
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aint = BN_to_ASN1_INTEGER(bn, NULL); |
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BN_free(bn); |
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if (!aint) { |
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X509V3err(X509V3_F_S2I_ASN1_INTEGER, |
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X509V3_R_BN_TO_ASN1_INTEGER_ERROR); |
|
return 0; |
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} |
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if (isneg) |
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aint->type |= V_ASN1_NEG; |
|
return aint; |
|
} |
|
|
|
int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint, |
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STACK_OF(CONF_VALUE) **extlist) |
|
{ |
|
char *strtmp; |
|
int ret; |
|
if (!aint) |
|
return 1; |
|
if (!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) |
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return 0; |
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ret = X509V3_add_value(name, strtmp, extlist); |
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OPENSSL_free(strtmp); |
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return ret; |
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} |
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|
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int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool) |
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{ |
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char *btmp; |
|
if (!(btmp = value->value)) |
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goto err; |
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if (!strcmp(btmp, "TRUE") || !strcmp(btmp, "true") |
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|| !strcmp(btmp, "Y") || !strcmp(btmp, "y") |
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|| !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) { |
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*asn1_bool = 0xff; |
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return 1; |
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} else if (!strcmp(btmp, "FALSE") || !strcmp(btmp, "false") |
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|| !strcmp(btmp, "N") || !strcmp(btmp, "n") |
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|| !strcmp(btmp, "NO") || !strcmp(btmp, "no")) { |
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*asn1_bool = 0; |
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return 1; |
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} |
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err: |
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X509V3err(X509V3_F_X509V3_GET_VALUE_BOOL, |
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X509V3_R_INVALID_BOOLEAN_STRING); |
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X509V3_conf_err(value); |
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return 0; |
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} |
|
|
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int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint) |
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{ |
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ASN1_INTEGER *itmp; |
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if (!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) { |
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X509V3_conf_err(value); |
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return 0; |
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} |
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*aint = itmp; |
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return 1; |
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} |
|
|
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#define HDR_NAME 1 |
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#define HDR_VALUE 2 |
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|
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/* |
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* #define DEBUG |
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*/ |
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|
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STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line) |
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{ |
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char *p, *q, c; |
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char *ntmp, *vtmp; |
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STACK_OF(CONF_VALUE) *values = NULL; |
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char *linebuf; |
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int state; |
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/* We are going to modify the line so copy it first */ |
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linebuf = BUF_strdup(line); |
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if (linebuf == NULL) { |
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X509V3err(X509V3_F_X509V3_PARSE_LIST, ERR_R_MALLOC_FAILURE); |
|
goto err; |
|
} |
|
state = HDR_NAME; |
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ntmp = NULL; |
|
/* Go through all characters */ |
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for (p = linebuf, q = linebuf; (c = *p) && (c != '\r') && (c != '\n'); |
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p++) { |
|
|
|
switch (state) { |
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case HDR_NAME: |
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if (c == ':') { |
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state = HDR_VALUE; |
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*p = 0; |
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ntmp = strip_spaces(q); |
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if (!ntmp) { |
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X509V3err(X509V3_F_X509V3_PARSE_LIST, |
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X509V3_R_INVALID_NULL_NAME); |
|
goto err; |
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} |
|
q = p + 1; |
|
} else if (c == ',') { |
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*p = 0; |
|
ntmp = strip_spaces(q); |
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q = p + 1; |
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#if 0 |
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printf("%s\n", ntmp); |
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#endif |
|
if (!ntmp) { |
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X509V3err(X509V3_F_X509V3_PARSE_LIST, |
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X509V3_R_INVALID_NULL_NAME); |
|
goto err; |
|
} |
|
X509V3_add_value(ntmp, NULL, &values); |
|
} |
|
break; |
|
|
|
case HDR_VALUE: |
|
if (c == ',') { |
|
state = HDR_NAME; |
|
*p = 0; |
|
vtmp = strip_spaces(q); |
|
#if 0 |
|
printf("%s\n", ntmp); |
|
#endif |
|
if (!vtmp) { |
|
X509V3err(X509V3_F_X509V3_PARSE_LIST, |
|
X509V3_R_INVALID_NULL_VALUE); |
|
goto err; |
|
} |
|
X509V3_add_value(ntmp, vtmp, &values); |
|
ntmp = NULL; |
|
q = p + 1; |
|
} |
|
|
|
} |
|
} |
|
|
|
if (state == HDR_VALUE) { |
|
vtmp = strip_spaces(q); |
|
#if 0 |
|
printf("%s=%s\n", ntmp, vtmp); |
|
#endif |
|
if (!vtmp) { |
|
X509V3err(X509V3_F_X509V3_PARSE_LIST, |
|
X509V3_R_INVALID_NULL_VALUE); |
|
goto err; |
|
} |
|
X509V3_add_value(ntmp, vtmp, &values); |
|
} else { |
|
ntmp = strip_spaces(q); |
|
#if 0 |
|
printf("%s\n", ntmp); |
|
#endif |
|
if (!ntmp) { |
|
X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME); |
|
goto err; |
|
} |
|
X509V3_add_value(ntmp, NULL, &values); |
|
} |
|
OPENSSL_free(linebuf); |
|
return values; |
|
|
|
err: |
|
OPENSSL_free(linebuf); |
|
sk_CONF_VALUE_pop_free(values, X509V3_conf_free); |
|
return NULL; |
|
|
|
} |
|
|
|
/* Delete leading and trailing spaces from a string */ |
|
static char *strip_spaces(char *name) |
|
{ |
|
char *p, *q; |
|
/* Skip over leading spaces */ |
|
p = name; |
|
while (*p && isspace((unsigned char)*p)) |
|
p++; |
|
if (!*p) |
|
return NULL; |
|
q = p + strlen(p) - 1; |
|
while ((q != p) && isspace((unsigned char)*q)) |
|
q--; |
|
if (p != q) |
|
q[1] = 0; |
|
if (!*p) |
|
return NULL; |
|
return p; |
|
} |
|
|
|
/* hex string utilities */ |
|
|
|
/* |
|
* Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its |
|
* hex representation @@@ (Contents of buffer are always kept in ASCII, also |
|
* on EBCDIC machines) |
|
*/ |
|
|
|
char *hex_to_string(const unsigned char *buffer, long len) |
|
{ |
|
char *tmp, *q; |
|
const unsigned char *p; |
|
int i; |
|
const static char hexdig[] = "0123456789ABCDEF"; |
|
if (!buffer || !len) |
|
return NULL; |
|
if (!(tmp = OPENSSL_malloc(len * 3 + 1))) { |
|
X509V3err(X509V3_F_HEX_TO_STRING, ERR_R_MALLOC_FAILURE); |
|
return NULL; |
|
} |
|
q = tmp; |
|
for (i = 0, p = buffer; i < len; i++, p++) { |
|
*q++ = hexdig[(*p >> 4) & 0xf]; |
|
*q++ = hexdig[*p & 0xf]; |
|
*q++ = ':'; |
|
} |
|
q[-1] = 0; |
|
#ifdef CHARSET_EBCDIC |
|
ebcdic2ascii(tmp, tmp, q - tmp - 1); |
|
#endif |
|
|
|
return tmp; |
|
} |
|
|
|
/* |
|
* Give a string of hex digits convert to a buffer |
|
*/ |
|
|
|
unsigned char *string_to_hex(const char *str, long *len) |
|
{ |
|
unsigned char *hexbuf, *q; |
|
unsigned char ch, cl, *p; |
|
if (!str) { |
|
X509V3err(X509V3_F_STRING_TO_HEX, X509V3_R_INVALID_NULL_ARGUMENT); |
|
return NULL; |
|
} |
|
if (!(hexbuf = OPENSSL_malloc(strlen(str) >> 1))) |
|
goto err; |
|
for (p = (unsigned char *)str, q = hexbuf; *p;) { |
|
ch = *p++; |
|
#ifdef CHARSET_EBCDIC |
|
ch = os_toebcdic[ch]; |
|
#endif |
|
if (ch == ':') |
|
continue; |
|
cl = *p++; |
|
#ifdef CHARSET_EBCDIC |
|
cl = os_toebcdic[cl]; |
|
#endif |
|
if (!cl) { |
|
X509V3err(X509V3_F_STRING_TO_HEX, X509V3_R_ODD_NUMBER_OF_DIGITS); |
|
OPENSSL_free(hexbuf); |
|
return NULL; |
|
} |
|
if (isupper(ch)) |
|
ch = tolower(ch); |
|
if (isupper(cl)) |
|
cl = tolower(cl); |
|
|
|
if ((ch >= '0') && (ch <= '9')) |
|
ch -= '0'; |
|
else if ((ch >= 'a') && (ch <= 'f')) |
|
ch -= 'a' - 10; |
|
else |
|
goto badhex; |
|
|
|
if ((cl >= '0') && (cl <= '9')) |
|
cl -= '0'; |
|
else if ((cl >= 'a') && (cl <= 'f')) |
|
cl -= 'a' - 10; |
|
else |
|
goto badhex; |
|
|
|
*q++ = (ch << 4) | cl; |
|
} |
|
|
|
if (len) |
|
*len = q - hexbuf; |
|
|
|
return hexbuf; |
|
|
|
err: |
|
if (hexbuf) |
|
OPENSSL_free(hexbuf); |
|
X509V3err(X509V3_F_STRING_TO_HEX, ERR_R_MALLOC_FAILURE); |
|
return NULL; |
|
|
|
badhex: |
|
OPENSSL_free(hexbuf); |
|
X509V3err(X509V3_F_STRING_TO_HEX, X509V3_R_ILLEGAL_HEX_DIGIT); |
|
return NULL; |
|
|
|
} |
|
|
|
/* |
|
* V2I name comparison function: returns zero if 'name' matches cmp or cmp.* |
|
*/ |
|
|
|
int name_cmp(const char *name, const char *cmp) |
|
{ |
|
int len, ret; |
|
char c; |
|
len = strlen(cmp); |
|
if ((ret = strncmp(name, cmp, len))) |
|
return ret; |
|
c = name[len]; |
|
if (!c || (c == '.')) |
|
return 0; |
|
return 1; |
|
} |
|
|
|
static int sk_strcmp(const char *const *a, const char *const *b) |
|
{ |
|
return strcmp(*a, *b); |
|
} |
|
|
|
STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x) |
|
{ |
|
GENERAL_NAMES *gens; |
|
STACK_OF(OPENSSL_STRING) *ret; |
|
|
|
gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL); |
|
ret = get_email(X509_get_subject_name(x), gens); |
|
sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); |
|
return ret; |
|
} |
|
|
|
STACK_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x) |
|
{ |
|
AUTHORITY_INFO_ACCESS *info; |
|
STACK_OF(OPENSSL_STRING) *ret = NULL; |
|
int i; |
|
|
|
info = X509_get_ext_d2i(x, NID_info_access, NULL, NULL); |
|
if (!info) |
|
return NULL; |
|
for (i = 0; i < sk_ACCESS_DESCRIPTION_num(info); i++) { |
|
ACCESS_DESCRIPTION *ad = sk_ACCESS_DESCRIPTION_value(info, i); |
|
if (OBJ_obj2nid(ad->method) == NID_ad_OCSP) { |
|
if (ad->location->type == GEN_URI) { |
|
if (!append_ia5 |
|
(&ret, ad->location->d.uniformResourceIdentifier)) |
|
break; |
|
} |
|
} |
|
} |
|
AUTHORITY_INFO_ACCESS_free(info); |
|
return ret; |
|
} |
|
|
|
STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x) |
|
{ |
|
GENERAL_NAMES *gens; |
|
STACK_OF(X509_EXTENSION) *exts; |
|
STACK_OF(OPENSSL_STRING) *ret; |
|
|
|
exts = X509_REQ_get_extensions(x); |
|
gens = X509V3_get_d2i(exts, NID_subject_alt_name, NULL, NULL); |
|
ret = get_email(X509_REQ_get_subject_name(x), gens); |
|
sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); |
|
sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free); |
|
return ret; |
|
} |
|
|
|
static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name, |
|
GENERAL_NAMES *gens) |
|
{ |
|
STACK_OF(OPENSSL_STRING) *ret = NULL; |
|
X509_NAME_ENTRY *ne; |
|
ASN1_IA5STRING *email; |
|
GENERAL_NAME *gen; |
|
int i; |
|
/* Now add any email address(es) to STACK */ |
|
i = -1; |
|
/* First supplied X509_NAME */ |
|
while ((i = X509_NAME_get_index_by_NID(name, |
|
NID_pkcs9_emailAddress, i)) >= 0) { |
|
ne = X509_NAME_get_entry(name, i); |
|
email = X509_NAME_ENTRY_get_data(ne); |
|
if (!append_ia5(&ret, email)) |
|
return NULL; |
|
} |
|
for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) { |
|
gen = sk_GENERAL_NAME_value(gens, i); |
|
if (gen->type != GEN_EMAIL) |
|
continue; |
|
if (!append_ia5(&ret, gen->d.ia5)) |
|
return NULL; |
|
} |
|
return ret; |
|
} |
|
|
|
static void str_free(OPENSSL_STRING str) |
|
{ |
|
OPENSSL_free(str); |
|
} |
|
|
|
static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email) |
|
{ |
|
char *emtmp; |
|
/* First some sanity checks */ |
|
if (email->type != V_ASN1_IA5STRING) |
|
return 1; |
|
if (!email->data || !email->length) |
|
return 1; |
|
if (!*sk) |
|
*sk = sk_OPENSSL_STRING_new(sk_strcmp); |
|
if (!*sk) |
|
return 0; |
|
/* Don't add duplicates */ |
|
if (sk_OPENSSL_STRING_find(*sk, (char *)email->data) != -1) |
|
return 1; |
|
emtmp = BUF_strdup((char *)email->data); |
|
if (!emtmp || !sk_OPENSSL_STRING_push(*sk, emtmp)) { |
|
X509_email_free(*sk); |
|
*sk = NULL; |
|
return 0; |
|
} |
|
return 1; |
|
} |
|
|
|
void X509_email_free(STACK_OF(OPENSSL_STRING) *sk) |
|
{ |
|
sk_OPENSSL_STRING_pop_free(sk, str_free); |
|
} |
|
|
|
/* |
|
* Convert IP addresses both IPv4 and IPv6 into an OCTET STRING compatible |
|
* with RFC3280. |
|
*/ |
|
|
|
ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc) |
|
{ |
|
unsigned char ipout[16]; |
|
ASN1_OCTET_STRING *ret; |
|
int iplen; |
|
|
|
/* If string contains a ':' assume IPv6 */ |
|
|
|
iplen = a2i_ipadd(ipout, ipasc); |
|
|
|
if (!iplen) |
|
return NULL; |
|
|
|
ret = ASN1_OCTET_STRING_new(); |
|
if (!ret) |
|
return NULL; |
|
if (!ASN1_OCTET_STRING_set(ret, ipout, iplen)) { |
|
ASN1_OCTET_STRING_free(ret); |
|
return NULL; |
|
} |
|
return ret; |
|
} |
|
|
|
ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc) |
|
{ |
|
ASN1_OCTET_STRING *ret = NULL; |
|
unsigned char ipout[32]; |
|
char *iptmp = NULL, *p; |
|
int iplen1, iplen2; |
|
p = strchr(ipasc, '/'); |
|
if (!p) |
|
return NULL; |
|
iptmp = BUF_strdup(ipasc); |
|
if (!iptmp) |
|
return NULL; |
|
p = iptmp + (p - ipasc); |
|
*p++ = 0; |
|
|
|
iplen1 = a2i_ipadd(ipout, iptmp); |
|
|
|
if (!iplen1) |
|
goto err; |
|
|
|
iplen2 = a2i_ipadd(ipout + iplen1, p); |
|
|
|
OPENSSL_free(iptmp); |
|
iptmp = NULL; |
|
|
|
if (!iplen2 || (iplen1 != iplen2)) |
|
goto err; |
|
|
|
ret = ASN1_OCTET_STRING_new(); |
|
if (!ret) |
|
goto err; |
|
if (!ASN1_OCTET_STRING_set(ret, ipout, iplen1 + iplen2)) |
|
goto err; |
|
|
|
return ret; |
|
|
|
err: |
|
if (iptmp) |
|
OPENSSL_free(iptmp); |
|
if (ret) |
|
ASN1_OCTET_STRING_free(ret); |
|
return NULL; |
|
} |
|
|
|
int a2i_ipadd(unsigned char *ipout, const char *ipasc) |
|
{ |
|
/* If string contains a ':' assume IPv6 */ |
|
|
|
if (strchr(ipasc, ':')) { |
|
if (!ipv6_from_asc(ipout, ipasc)) |
|
return 0; |
|
return 16; |
|
} else { |
|
if (!ipv4_from_asc(ipout, ipasc)) |
|
return 0; |
|
return 4; |
|
} |
|
} |
|
|
|
static int ipv4_from_asc(unsigned char *v4, const char *in) |
|
{ |
|
int a0, a1, a2, a3; |
|
if (sscanf(in, "%d.%d.%d.%d", &a0, &a1, &a2, &a3) != 4) |
|
return 0; |
|
if ((a0 < 0) || (a0 > 255) || (a1 < 0) || (a1 > 255) |
|
|| (a2 < 0) || (a2 > 255) || (a3 < 0) || (a3 > 255)) |
|
return 0; |
|
v4[0] = a0; |
|
v4[1] = a1; |
|
v4[2] = a2; |
|
v4[3] = a3; |
|
return 1; |
|
} |
|
|
|
typedef struct { |
|
/* Temporary store for IPV6 output */ |
|
unsigned char tmp[16]; |
|
/* Total number of bytes in tmp */ |
|
int total; |
|
/* The position of a zero (corresponding to '::') */ |
|
int zero_pos; |
|
/* Number of zeroes */ |
|
int zero_cnt; |
|
} IPV6_STAT; |
|
|
|
static int ipv6_from_asc(unsigned char *v6, const char *in) |
|
{ |
|
IPV6_STAT v6stat; |
|
v6stat.total = 0; |
|
v6stat.zero_pos = -1; |
|
v6stat.zero_cnt = 0; |
|
/* |
|
* Treat the IPv6 representation as a list of values separated by ':'. |
|
* The presence of a '::' will parse as one, two or three zero length |
|
* elements. |
|
*/ |
|
if (!CONF_parse_list(in, ':', 0, ipv6_cb, &v6stat)) |
|
return 0; |
|
|
|
/* Now for some sanity checks */ |
|
|
|
if (v6stat.zero_pos == -1) { |
|
/* If no '::' must have exactly 16 bytes */ |
|
if (v6stat.total != 16) |
|
return 0; |
|
} else { |
|
/* If '::' must have less than 16 bytes */ |
|
if (v6stat.total == 16) |
|
return 0; |
|
/* More than three zeroes is an error */ |
|
if (v6stat.zero_cnt > 3) |
|
return 0; |
|
/* Can only have three zeroes if nothing else present */ |
|
else if (v6stat.zero_cnt == 3) { |
|
if (v6stat.total > 0) |
|
return 0; |
|
} |
|
/* Can only have two zeroes if at start or end */ |
|
else if (v6stat.zero_cnt == 2) { |
|
if ((v6stat.zero_pos != 0) |
|
&& (v6stat.zero_pos != v6stat.total)) |
|
return 0; |
|
} else |
|
/* Can only have one zero if *not* start or end */ |
|
{ |
|
if ((v6stat.zero_pos == 0) |
|
|| (v6stat.zero_pos == v6stat.total)) |
|
return 0; |
|
} |
|
} |
|
|
|
/* Format result */ |
|
|
|
if (v6stat.zero_pos >= 0) { |
|
/* Copy initial part */ |
|
memcpy(v6, v6stat.tmp, v6stat.zero_pos); |
|
/* Zero middle */ |
|
memset(v6 + v6stat.zero_pos, 0, 16 - v6stat.total); |
|
/* Copy final part */ |
|
if (v6stat.total != v6stat.zero_pos) |
|
memcpy(v6 + v6stat.zero_pos + 16 - v6stat.total, |
|
v6stat.tmp + v6stat.zero_pos, |
|
v6stat.total - v6stat.zero_pos); |
|
} else |
|
memcpy(v6, v6stat.tmp, 16); |
|
|
|
return 1; |
|
} |
|
|
|
static int ipv6_cb(const char *elem, int len, void *usr) |
|
{ |
|
IPV6_STAT *s = usr; |
|
/* Error if 16 bytes written */ |
|
if (s->total == 16) |
|
return 0; |
|
if (len == 0) { |
|
/* Zero length element, corresponds to '::' */ |
|
if (s->zero_pos == -1) |
|
s->zero_pos = s->total; |
|
/* If we've already got a :: its an error */ |
|
else if (s->zero_pos != s->total) |
|
return 0; |
|
s->zero_cnt++; |
|
} else { |
|
/* If more than 4 characters could be final a.b.c.d form */ |
|
if (len > 4) { |
|
/* Need at least 4 bytes left */ |
|
if (s->total > 12) |
|
return 0; |
|
/* Must be end of string */ |
|
if (elem[len]) |
|
return 0; |
|
if (!ipv4_from_asc(s->tmp + s->total, elem)) |
|
return 0; |
|
s->total += 4; |
|
} else { |
|
if (!ipv6_hex(s->tmp + s->total, elem, len)) |
|
return 0; |
|
s->total += 2; |
|
} |
|
} |
|
return 1; |
|
} |
|
|
|
/* |
|
* Convert a string of up to 4 hex digits into the corresponding IPv6 form. |
|
*/ |
|
|
|
static int ipv6_hex(unsigned char *out, const char *in, int inlen) |
|
{ |
|
unsigned char c; |
|
unsigned int num = 0; |
|
if (inlen > 4) |
|
return 0; |
|
while (inlen--) { |
|
c = *in++; |
|
num <<= 4; |
|
if ((c >= '0') && (c <= '9')) |
|
num |= c - '0'; |
|
else if ((c >= 'A') && (c <= 'F')) |
|
num |= c - 'A' + 10; |
|
else if ((c >= 'a') && (c <= 'f')) |
|
num |= c - 'a' + 10; |
|
else |
|
return 0; |
|
} |
|
out[0] = num >> 8; |
|
out[1] = num & 0xff; |
|
return 1; |
|
} |
|
|
|
int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE) *dn_sk, |
|
unsigned long chtype) |
|
{ |
|
CONF_VALUE *v; |
|
int i, mval; |
|
char *p, *type; |
|
if (!nm) |
|
return 0; |
|
|
|
for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) { |
|
v = sk_CONF_VALUE_value(dn_sk, i); |
|
type = v->name; |
|
/* |
|
* Skip past any leading X. X: X, etc to allow for multiple instances |
|
*/ |
|
for (p = type; *p; p++) |
|
#ifndef CHARSET_EBCDIC |
|
if ((*p == ':') || (*p == ',') || (*p == '.')) |
|
#else |
|
if ((*p == os_toascii[':']) || (*p == os_toascii[',']) |
|
|| (*p == os_toascii['.'])) |
|
#endif |
|
{ |
|
p++; |
|
if (*p) |
|
type = p; |
|
break; |
|
} |
|
#ifndef CHARSET_EBCDIC |
|
if (*type == '+') |
|
#else |
|
if (*type == os_toascii['+']) |
|
#endif |
|
{ |
|
mval = -1; |
|
type++; |
|
} else |
|
mval = 0; |
|
if (!X509_NAME_add_entry_by_txt(nm, type, chtype, |
|
(unsigned char *)v->value, -1, -1, |
|
mval)) |
|
return 0; |
|
|
|
} |
|
return 1; |
|
}
|
|
|