sl@0: /* v3_utl.c */
sl@0: /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
sl@0:  * project.
sl@0:  */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 1999-2003 The OpenSSL Project.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    licensing@OpenSSL.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  * ====================================================================
sl@0:  *
sl@0:  * This product includes cryptographic software written by Eric Young
sl@0:  * (eay@cryptsoft.com).  This product includes software written by Tim
sl@0:  * Hudson (tjh@cryptsoft.com).
sl@0:  *
sl@0:  */
sl@0:  /*
sl@0:  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
sl@0:  */
sl@0: 
sl@0: 
sl@0: /* X509 v3 extension utilities */
sl@0: 
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <ctype.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/conf.h>
sl@0: #include <openssl/x509v3.h>
sl@0: #include <openssl/bn.h>
sl@0: #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
sl@0: #include "libcrypto_wsd_macros.h"
sl@0: #include "libcrypto_wsd.h"
sl@0: #endif
sl@0: 
sl@0: static char *strip_spaces(char *name);
sl@0: static int sk_strcmp(const char * const *a, const char * const *b);
sl@0: static STACK *get_email(X509_NAME *name, GENERAL_NAMES *gens);
sl@0: static void str_free(void *str);
sl@0: static int append_ia5(STACK **sk, ASN1_IA5STRING *email);
sl@0: 
sl@0: static int ipv4_from_asc(unsigned char *v4, const char *in);
sl@0: static int ipv6_from_asc(unsigned char *v6, const char *in);
sl@0: static int ipv6_cb(const char *elem, int len, void *usr);
sl@0: static int ipv6_hex(unsigned char *out, const char *in, int inlen);
sl@0: 
sl@0: /* Add a CONF_VALUE name value pair to stack */
sl@0: 
sl@0: EXPORT_C int X509V3_add_value(const char *name, const char *value,
sl@0: 						STACK_OF(CONF_VALUE) **extlist)
sl@0: {
sl@0: 	CONF_VALUE *vtmp = NULL;
sl@0: 	char *tname = NULL, *tvalue = NULL;
sl@0: 	if(name && !(tname = BUF_strdup(name))) goto err;
sl@0: 	if(value && !(tvalue = BUF_strdup(value))) goto err;;
sl@0: 	if(!(vtmp = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) goto err;
sl@0: 	if(!*extlist && !(*extlist = sk_CONF_VALUE_new_null())) goto err;
sl@0: 	vtmp->section = NULL;
sl@0: 	vtmp->name = tname;
sl@0: 	vtmp->value = tvalue;
sl@0: 	if(!sk_CONF_VALUE_push(*extlist, vtmp)) goto err;
sl@0: 	return 1;
sl@0: 	err:
sl@0: 	X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE);
sl@0: 	if(vtmp) OPENSSL_free(vtmp);
sl@0: 	if(tname) OPENSSL_free(tname);
sl@0: 	if(tvalue) OPENSSL_free(tvalue);
sl@0: 	return 0;
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509V3_add_value_uchar(const char *name, const unsigned char *value,
sl@0: 			   STACK_OF(CONF_VALUE) **extlist)
sl@0:     {
sl@0:     return X509V3_add_value(name,(const char *)value,extlist);
sl@0:     }
sl@0: 
sl@0: /* Free function for STACK_OF(CONF_VALUE) */
sl@0: 
sl@0: EXPORT_C void X509V3_conf_free(CONF_VALUE *conf)
sl@0: {
sl@0: 	if(!conf) return;
sl@0: 	if(conf->name) OPENSSL_free(conf->name);
sl@0: 	if(conf->value) OPENSSL_free(conf->value);
sl@0: 	if(conf->section) OPENSSL_free(conf->section);
sl@0: 	OPENSSL_free(conf);
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509V3_add_value_bool(const char *name, int asn1_bool,
sl@0: 						STACK_OF(CONF_VALUE) **extlist)
sl@0: {
sl@0: 	if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
sl@0: 	return X509V3_add_value(name, "FALSE", extlist);
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509V3_add_value_bool_nf(char *name, int asn1_bool,
sl@0: 						STACK_OF(CONF_VALUE) **extlist)
sl@0: {
sl@0: 	if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
sl@0: 	return 1;
sl@0: }
sl@0: 
sl@0: 
sl@0: EXPORT_C char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a)
sl@0: {
sl@0: 	BIGNUM *bntmp = NULL;
sl@0: 	char *strtmp = NULL;
sl@0: 	if(!a) return NULL;
sl@0: 	if(!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) ||
sl@0: 	    !(strtmp = BN_bn2dec(bntmp)) )
sl@0: 		X509V3err(X509V3_F_I2S_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE);
sl@0: 	BN_free(bntmp);
sl@0: 	return strtmp;
sl@0: }
sl@0: 
sl@0: EXPORT_C char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a)
sl@0: {
sl@0: 	BIGNUM *bntmp = NULL;
sl@0: 	char *strtmp = NULL;
sl@0: 	if(!a) return NULL;
sl@0: 	if(!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) ||
sl@0: 	    !(strtmp = BN_bn2dec(bntmp)) )
sl@0: 		X509V3err(X509V3_F_I2S_ASN1_INTEGER,ERR_R_MALLOC_FAILURE);
sl@0: 	BN_free(bntmp);
sl@0: 	return strtmp;
sl@0: }
sl@0: 
sl@0: EXPORT_C ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)
sl@0: {
sl@0: 	BIGNUM *bn = NULL;
sl@0: 	ASN1_INTEGER *aint;
sl@0: 	int isneg, ishex;
sl@0: 	int ret;
sl@0: 	if (!value) {
sl@0: 		X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE);
sl@0: 		return 0;
sl@0: 	}
sl@0: 	bn = BN_new();
sl@0: 	if (value[0] == '-') {
sl@0: 		value++;
sl@0: 		isneg = 1;
sl@0: 	} else isneg = 0;
sl@0: 
sl@0: 	if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) {
sl@0: 		value += 2;
sl@0: 		ishex = 1;
sl@0: 	} else ishex = 0;
sl@0: 
sl@0: 	if (ishex) ret = BN_hex2bn(&bn, value);
sl@0: 	else ret = BN_dec2bn(&bn, value);
sl@0: 
sl@0: 	if (!ret || value[ret]) {
sl@0: 		BN_free(bn);
sl@0: 		X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR);
sl@0: 		return 0;
sl@0: 	}
sl@0: 
sl@0: 	if (isneg && BN_is_zero(bn)) isneg = 0;
sl@0: 
sl@0: 	aint = BN_to_ASN1_INTEGER(bn, NULL);
sl@0: 	BN_free(bn);
sl@0: 	if (!aint) {
sl@0: 		X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
sl@0: 		return 0;
sl@0: 	}
sl@0: 	if (isneg) aint->type |= V_ASN1_NEG;
sl@0: 	return aint;
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
sl@0: 	     STACK_OF(CONF_VALUE) **extlist)
sl@0: {
sl@0: 	char *strtmp;
sl@0: 	int ret;
sl@0: 	if(!aint) return 1;
sl@0: 	if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0;
sl@0: 	ret = X509V3_add_value(name, strtmp, extlist);
sl@0: 	OPENSSL_free(strtmp);
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool)
sl@0: {
sl@0: 	char *btmp;
sl@0: 	if(!(btmp = value->value)) goto err;
sl@0: 	if(!strcmp(btmp, "TRUE") || !strcmp(btmp, "true")
sl@0: 		 || !strcmp(btmp, "Y") || !strcmp(btmp, "y")
sl@0: 		|| !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) {
sl@0: 		*asn1_bool = 0xff;
sl@0: 		return 1;
sl@0: 	} else if(!strcmp(btmp, "FALSE") || !strcmp(btmp, "false")
sl@0: 		 || !strcmp(btmp, "N") || !strcmp(btmp, "n")
sl@0: 		|| !strcmp(btmp, "NO") || !strcmp(btmp, "no")) {
sl@0: 		*asn1_bool = 0;
sl@0: 		return 1;
sl@0: 	}
sl@0: 	err:
sl@0: 	X509V3err(X509V3_F_X509V3_GET_VALUE_BOOL,X509V3_R_INVALID_BOOLEAN_STRING);
sl@0: 	X509V3_conf_err(value);
sl@0: 	return 0;
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint)
sl@0: {
sl@0: 	ASN1_INTEGER *itmp;
sl@0: 	if(!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) {
sl@0: 		X509V3_conf_err(value);
sl@0: 		return 0;
sl@0: 	}
sl@0: 	*aint = itmp;
sl@0: 	return 1;
sl@0: }
sl@0: 
sl@0: #define HDR_NAME	1
sl@0: #define HDR_VALUE	2
sl@0: 
sl@0: /*#define DEBUG*/
sl@0: 
sl@0: EXPORT_C STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line)
sl@0: {
sl@0: 	char *p, *q, c;
sl@0: 	char *ntmp, *vtmp;
sl@0: 	STACK_OF(CONF_VALUE) *values = NULL;
sl@0: 	char *linebuf;
sl@0: 	int state;
sl@0: 	/* We are going to modify the line so copy it first */
sl@0: 	linebuf = BUF_strdup(line);
sl@0: 	state = HDR_NAME;
sl@0: 	ntmp = NULL;
sl@0: 	/* Go through all characters */
sl@0: 	for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) {
sl@0: 
sl@0: 		switch(state) {
sl@0: 			case HDR_NAME:
sl@0: 			if(c == ':') {
sl@0: 				state = HDR_VALUE;
sl@0: 				*p = 0;
sl@0: 				ntmp = strip_spaces(q);
sl@0: 				if(!ntmp) {
sl@0: 					X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
sl@0: 					goto err;
sl@0: 				}
sl@0: 				q = p + 1;
sl@0: 			} else if(c == ',') {
sl@0: 				*p = 0;
sl@0: 				ntmp = strip_spaces(q);
sl@0: 				q = p + 1;
sl@0: #if 0
sl@0: 				printf("%s\n", ntmp);
sl@0: #endif
sl@0: 				if(!ntmp) {
sl@0: 					X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
sl@0: 					goto err;
sl@0: 				}
sl@0: 				X509V3_add_value(ntmp, NULL, &values);
sl@0: 			}
sl@0: 			break ;
sl@0: 
sl@0: 			case HDR_VALUE:
sl@0: 			if(c == ',') {
sl@0: 				state = HDR_NAME;
sl@0: 				*p = 0;
sl@0: 				vtmp = strip_spaces(q);
sl@0: #if 0
sl@0: 				printf("%s\n", ntmp);
sl@0: #endif
sl@0: 				if(!vtmp) {
sl@0: 					X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
sl@0: 					goto err;
sl@0: 				}
sl@0: 				X509V3_add_value(ntmp, vtmp, &values);
sl@0: 				ntmp = NULL;
sl@0: 				q = p + 1;
sl@0: 			}
sl@0: 
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 	if(state == HDR_VALUE) {
sl@0: 		vtmp = strip_spaces(q);
sl@0: #if 0
sl@0: 		printf("%s=%s\n", ntmp, vtmp);
sl@0: #endif
sl@0: 		if(!vtmp) {
sl@0: 			X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
sl@0: 			goto err;
sl@0: 		}
sl@0: 		X509V3_add_value(ntmp, vtmp, &values);
sl@0: 	} else {
sl@0: 		ntmp = strip_spaces(q);
sl@0: #if 0
sl@0: 		printf("%s\n", ntmp);
sl@0: #endif
sl@0: 		if(!ntmp) {
sl@0: 			X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
sl@0: 			goto err;
sl@0: 		}
sl@0: 		X509V3_add_value(ntmp, NULL, &values);
sl@0: 	}
sl@0: OPENSSL_free(linebuf);
sl@0: return values;
sl@0: 
sl@0: err:
sl@0: OPENSSL_free(linebuf);
sl@0: sk_CONF_VALUE_pop_free(values, X509V3_conf_free);
sl@0: return NULL;
sl@0: 
sl@0: }
sl@0: 
sl@0: /* Delete leading and trailing spaces from a string */
sl@0: static char *strip_spaces(char *name)
sl@0: {
sl@0: 	char *p, *q;
sl@0: 	/* Skip over leading spaces */
sl@0: 	p = name;
sl@0: 	while(*p && isspace((unsigned char)*p)) p++;
sl@0: 	if(!*p) return NULL;
sl@0: 	q = p + strlen(p) - 1;
sl@0: 	while((q != p) && isspace((unsigned char)*q)) q--;
sl@0: 	if(p != q) q[1] = 0;
sl@0: 	if(!*p) return NULL;
sl@0: 	return p;
sl@0: }
sl@0: 
sl@0: /* hex string utilities */
sl@0: 
sl@0: /* Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its
sl@0:  * hex representation
sl@0:  * @@@ (Contents of buffer are always kept in ASCII, also on EBCDIC machines)
sl@0:  */
sl@0:  
sl@0: 
sl@0: EXPORT_C char *hex_to_string(unsigned char *buffer, long len)
sl@0: {
sl@0: 	char *tmp, *q;
sl@0: 	unsigned char *p;
sl@0: 	int i;
sl@0: #ifndef EMULATOR	
sl@0: 	static char hexdig[] = "0123456789ABCDEF";
sl@0: #else
sl@0:     static const char hexdig[] = "0123456789ABCDEF";
sl@0: #endif	
sl@0: 	if(!buffer || !len) return NULL;
sl@0: 	if(!(tmp = OPENSSL_malloc(len * 3 + 1))) {
sl@0: 		X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 	q = tmp;
sl@0: 	for(i = 0, p = buffer; i < len; i++,p++) {
sl@0: 		*q++ = hexdig[(*p >> 4) & 0xf];
sl@0: 		*q++ = hexdig[*p & 0xf];
sl@0: 		*q++ = ':';
sl@0: 	}
sl@0: 	q[-1] = 0;
sl@0: #ifdef CHARSET_EBCDIC
sl@0: 	ebcdic2ascii(tmp, tmp, q - tmp - 1);
sl@0: #endif
sl@0: 
sl@0: 	return tmp;
sl@0: }
sl@0: 
sl@0: /* Give a string of hex digits convert to
sl@0:  * a buffer
sl@0:  */
sl@0: 
sl@0: EXPORT_C unsigned char *string_to_hex(char *str, long *len)
sl@0: {
sl@0: 	unsigned char *hexbuf, *q;
sl@0: 	unsigned char ch, cl, *p;
sl@0: 	if(!str) {
sl@0: 		X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 	if(!(hexbuf = OPENSSL_malloc(strlen(str) >> 1))) goto err;
sl@0: 	for(p = (unsigned char *)str, q = hexbuf; *p;) {
sl@0: 		ch = *p++;
sl@0: #ifdef CHARSET_EBCDIC
sl@0: 		ch = os_toebcdic[ch];
sl@0: #endif
sl@0: 		if(ch == ':') continue;
sl@0: 		cl = *p++;
sl@0: #ifdef CHARSET_EBCDIC
sl@0: 		cl = os_toebcdic[cl];
sl@0: #endif
sl@0: 		if(!cl) {
sl@0: 			X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ODD_NUMBER_OF_DIGITS);
sl@0: 			OPENSSL_free(hexbuf);
sl@0: 			return NULL;
sl@0: 		}
sl@0: 		if(isupper(ch)) ch = tolower(ch);
sl@0: 		if(isupper(cl)) cl = tolower(cl);
sl@0: 
sl@0: 		if((ch >= '0') && (ch <= '9')) ch -= '0';
sl@0: 		else if ((ch >= 'a') && (ch <= 'f')) ch -= 'a' - 10;
sl@0: 		else goto badhex;
sl@0: 
sl@0: 		if((cl >= '0') && (cl <= '9')) cl -= '0';
sl@0: 		else if ((cl >= 'a') && (cl <= 'f')) cl -= 'a' - 10;
sl@0: 		else goto badhex;
sl@0: 
sl@0: 		*q++ = (ch << 4) | cl;
sl@0: 	}
sl@0: 
sl@0: 	if(len) *len = q - hexbuf;
sl@0: 
sl@0: 	return hexbuf;
sl@0: 
sl@0: 	err:
sl@0: 	if(hexbuf) OPENSSL_free(hexbuf);
sl@0: 	X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE);
sl@0: 	return NULL;
sl@0: 
sl@0: 	badhex:
sl@0: 	OPENSSL_free(hexbuf);
sl@0: 	X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT);
sl@0: 	return NULL;
sl@0: 
sl@0: }
sl@0: 
sl@0: /* V2I name comparison function: returns zero if 'name' matches
sl@0:  * cmp or cmp.*
sl@0:  */
sl@0: 
sl@0: EXPORT_C int name_cmp(const char *name, const char *cmp)
sl@0: {
sl@0: 	int len, ret;
sl@0: 	char c;
sl@0: 	len = strlen(cmp);
sl@0: 	if((ret = strncmp(name, cmp, len))) return ret;
sl@0: 	c = name[len];
sl@0: 	if(!c || (c=='.')) return 0;
sl@0: 	return 1;
sl@0: }
sl@0: 
sl@0: static int sk_strcmp(const char * const *a, const char * const *b)
sl@0: {
sl@0: 	return strcmp(*a, *b);
sl@0: }
sl@0: 
sl@0: EXPORT_C STACK *X509_get1_email(X509 *x)
sl@0: {
sl@0: 	GENERAL_NAMES *gens;
sl@0: 	STACK *ret;
sl@0: 	gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
sl@0: 	ret = get_email(X509_get_subject_name(x), gens);
sl@0: 	sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: EXPORT_C STACK *X509_REQ_get1_email(X509_REQ *x)
sl@0: {
sl@0: 	GENERAL_NAMES *gens;
sl@0: 	STACK_OF(X509_EXTENSION) *exts;
sl@0: 	STACK *ret;
sl@0: 	exts = X509_REQ_get_extensions(x);
sl@0: 	gens = X509V3_get_d2i(exts, NID_subject_alt_name, NULL, NULL);
sl@0: 	ret = get_email(X509_REQ_get_subject_name(x), gens);
sl@0: 	sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
sl@0: 	sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: 
sl@0: static STACK *get_email(X509_NAME *name, GENERAL_NAMES *gens)
sl@0: {
sl@0: 	STACK *ret = NULL;
sl@0: 	X509_NAME_ENTRY *ne;
sl@0: 	ASN1_IA5STRING *email;
sl@0: 	GENERAL_NAME *gen;
sl@0: 	int i;
sl@0: 	/* Now add any email address(es) to STACK */
sl@0: 	i = -1;
sl@0: 	/* First supplied X509_NAME */
sl@0: 	while((i = X509_NAME_get_index_by_NID(name,
sl@0: 					 NID_pkcs9_emailAddress, i)) >= 0) {
sl@0: 		ne = X509_NAME_get_entry(name, i);
sl@0: 		email = X509_NAME_ENTRY_get_data(ne);
sl@0: 		if(!append_ia5(&ret, email)) return NULL;
sl@0: 	}
sl@0: 	for(i = 0; i < sk_GENERAL_NAME_num(gens); i++)
sl@0: 	{
sl@0: 		gen = sk_GENERAL_NAME_value(gens, i);
sl@0: 		if(gen->type != GEN_EMAIL) continue;
sl@0: 		if(!append_ia5(&ret, gen->d.ia5)) return NULL;
sl@0: 	}
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: static void str_free(void *str)
sl@0: {
sl@0: 	OPENSSL_free(str);
sl@0: }
sl@0: 
sl@0: static int append_ia5(STACK **sk, ASN1_IA5STRING *email)
sl@0: {
sl@0: 	char *emtmp;
sl@0: 	/* First some sanity checks */
sl@0: 	if(email->type != V_ASN1_IA5STRING) return 1;
sl@0: 	if(!email->data || !email->length) return 1;
sl@0: 	if(!*sk) *sk = sk_new(sk_strcmp);
sl@0: 	if(!*sk) return 0;
sl@0: 	/* Don't add duplicates */
sl@0: 	if(sk_find(*sk, (char *)email->data) != -1) return 1;
sl@0: 	emtmp = BUF_strdup((char *)email->data);
sl@0: 	if(!emtmp || !sk_push(*sk, emtmp)) {
sl@0: 		X509_email_free(*sk);
sl@0: 		*sk = NULL;
sl@0: 		return 0;
sl@0: 	}
sl@0: 	return 1;
sl@0: }
sl@0: 
sl@0: EXPORT_C void X509_email_free(STACK *sk)
sl@0: {
sl@0: 	sk_pop_free(sk, str_free);
sl@0: }
sl@0: 
sl@0: /* Convert IP addresses both IPv4 and IPv6 into an 
sl@0:  * OCTET STRING compatible with RFC3280.
sl@0:  */
sl@0: 
sl@0: EXPORT_C ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc)
sl@0: 	{
sl@0: 	unsigned char ipout[16];
sl@0: 	ASN1_OCTET_STRING *ret;
sl@0: 	int iplen;
sl@0: 
sl@0: 	/* If string contains a ':' assume IPv6 */
sl@0: 
sl@0: 	iplen = a2i_ipadd(ipout, ipasc);
sl@0: 
sl@0: 	if (!iplen)
sl@0: 		return NULL;
sl@0: 
sl@0: 	ret = ASN1_OCTET_STRING_new();
sl@0: 	if (!ret)
sl@0: 		return NULL;
sl@0: 	if (!ASN1_OCTET_STRING_set(ret, ipout, iplen))
sl@0: 		{
sl@0: 		ASN1_OCTET_STRING_free(ret);
sl@0: 		return NULL;
sl@0: 		}
sl@0: 	return ret;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc)
sl@0: 	{
sl@0: 	ASN1_OCTET_STRING *ret = NULL;
sl@0: 	unsigned char ipout[32];
sl@0: 	char *iptmp = NULL, *p;
sl@0: 	int iplen1, iplen2;
sl@0: 	p = strchr(ipasc,'/');
sl@0: 	if (!p)
sl@0: 		return NULL;
sl@0: 	iptmp = BUF_strdup(ipasc);
sl@0: 	if (!iptmp)
sl@0: 		return NULL;
sl@0: 	p = iptmp + (p - ipasc);
sl@0: 	*p++ = 0;
sl@0: 
sl@0: 	iplen1 = a2i_ipadd(ipout, iptmp);
sl@0: 
sl@0: 	if (!iplen1)
sl@0: 		goto err;
sl@0: 
sl@0: 	iplen2 = a2i_ipadd(ipout + iplen1, p);
sl@0: 
sl@0: 	OPENSSL_free(iptmp);
sl@0: 	iptmp = NULL;
sl@0: 
sl@0: 	if (!iplen2 || (iplen1 != iplen2))
sl@0: 		goto err;
sl@0: 
sl@0: 	ret = ASN1_OCTET_STRING_new();
sl@0: 	if (!ret)
sl@0: 		goto err;
sl@0: 	if (!ASN1_OCTET_STRING_set(ret, ipout, iplen1 + iplen2))
sl@0: 		goto err;
sl@0: 
sl@0: 	return ret;
sl@0: 
sl@0: 	err:
sl@0: 	if (iptmp)
sl@0: 		OPENSSL_free(iptmp);
sl@0: 	if (ret)
sl@0: 		ASN1_OCTET_STRING_free(ret);
sl@0: 	return NULL;
sl@0: 	}
sl@0: 	
sl@0: 
sl@0: EXPORT_C int a2i_ipadd(unsigned char *ipout, const char *ipasc)
sl@0: 	{
sl@0: 	/* If string contains a ':' assume IPv6 */
sl@0: 
sl@0: 	if (strchr(ipasc, ':'))
sl@0: 		{
sl@0: 		if (!ipv6_from_asc(ipout, ipasc))
sl@0: 			return 0;
sl@0: 		return 16;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		if (!ipv4_from_asc(ipout, ipasc))
sl@0: 			return 0;
sl@0: 		return 4;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: static int ipv4_from_asc(unsigned char *v4, const char *in)
sl@0: 	{
sl@0: 	int a0, a1, a2, a3;
sl@0: 	if (sscanf(in, "%d.%d.%d.%d", &a0, &a1, &a2, &a3) != 4)
sl@0: 		return 0;
sl@0: 	if ((a0 < 0) || (a0 > 255) || (a1 < 0) || (a1 > 255)
sl@0: 		|| (a2 < 0) || (a2 > 255) || (a3 < 0) || (a3 > 255))
sl@0: 		return 0;
sl@0: 	v4[0] = a0;
sl@0: 	v4[1] = a1;
sl@0: 	v4[2] = a2;
sl@0: 	v4[3] = a3;
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: typedef struct {
sl@0: 		/* Temporary store for IPV6 output */
sl@0: 		unsigned char tmp[16];
sl@0: 		/* Total number of bytes in tmp */
sl@0: 		int total;
sl@0: 		/* The position of a zero (corresponding to '::') */
sl@0: 		int zero_pos;
sl@0: 		/* Number of zeroes */
sl@0: 		int zero_cnt;
sl@0: 	} IPV6_STAT;
sl@0: 
sl@0: 
sl@0: static int ipv6_from_asc(unsigned char *v6, const char *in)
sl@0: 	{
sl@0: 	IPV6_STAT v6stat;
sl@0: 	v6stat.total = 0;
sl@0: 	v6stat.zero_pos = -1;
sl@0: 	v6stat.zero_cnt = 0;
sl@0: 	/* Treat the IPv6 representation as a list of values
sl@0: 	 * separated by ':'. The presence of a '::' will parse
sl@0:  	 * as one, two or three zero length elements.
sl@0: 	 */
sl@0: 	if (!CONF_parse_list(in, ':', 0, ipv6_cb, &v6stat))
sl@0: 		return 0;
sl@0: 
sl@0: 	/* Now for some sanity checks */
sl@0: 
sl@0: 	if (v6stat.zero_pos == -1)
sl@0: 		{
sl@0: 		/* If no '::' must have exactly 16 bytes */
sl@0: 		if (v6stat.total != 16)
sl@0: 			return 0;
sl@0: 		}
sl@0: 	else 
sl@0: 		{
sl@0: 		/* If '::' must have less than 16 bytes */
sl@0: 		if (v6stat.total == 16)
sl@0: 			return 0;
sl@0: 		/* More than three zeroes is an error */
sl@0: 		if (v6stat.zero_cnt > 3)
sl@0: 			return 0;
sl@0: 		/* Can only have three zeroes if nothing else present */
sl@0: 		else if (v6stat.zero_cnt == 3)
sl@0: 			{
sl@0: 			if (v6stat.total > 0)
sl@0: 				return 0;
sl@0: 			}
sl@0: 		/* Can only have two zeroes if at start or end */
sl@0: 		else if (v6stat.zero_cnt == 2)
sl@0: 			{
sl@0: 			if ((v6stat.zero_pos != 0)
sl@0: 				&& (v6stat.zero_pos != v6stat.total))
sl@0: 				return 0;
sl@0: 			}
sl@0: 		else 
sl@0: 		/* Can only have one zero if *not* start or end */
sl@0: 			{
sl@0: 			if ((v6stat.zero_pos == 0)
sl@0: 				|| (v6stat.zero_pos == v6stat.total))
sl@0: 				return 0;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	/* Format result */
sl@0: 
sl@0: 	/* Copy initial part */
sl@0: 	if (v6stat.zero_pos > 0)
sl@0: 		memcpy(v6, v6stat.tmp, v6stat.zero_pos);
sl@0: 	/* Zero middle */
sl@0: 	if (v6stat.total != 16)
sl@0: 		memset(v6 + v6stat.zero_pos, 0, 16 - v6stat.total);
sl@0: 	/* Copy final part */
sl@0: 	if (v6stat.total != v6stat.zero_pos)
sl@0: 		memcpy(v6 + v6stat.zero_pos + 16 - v6stat.total,
sl@0: 			v6stat.tmp + v6stat.zero_pos,
sl@0: 			v6stat.total - v6stat.zero_pos);
sl@0: 
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: static int ipv6_cb(const char *elem, int len, void *usr)
sl@0: 	{
sl@0: 	IPV6_STAT *s = usr;
sl@0: 	/* Error if 16 bytes written */
sl@0: 	if (s->total == 16)
sl@0: 		return 0;
sl@0: 	if (len == 0)
sl@0: 		{
sl@0: 		/* Zero length element, corresponds to '::' */
sl@0: 		if (s->zero_pos == -1)
sl@0: 			s->zero_pos = s->total;
sl@0: 		/* If we've already got a :: its an error */
sl@0: 		else if (s->zero_pos != s->total)
sl@0: 			return 0;
sl@0: 		s->zero_cnt++;
sl@0: 		}
sl@0: 	else 
sl@0: 		{
sl@0: 		/* If more than 4 characters could be final a.b.c.d form */
sl@0: 		if (len > 4)
sl@0: 			{
sl@0: 			/* Need at least 4 bytes left */
sl@0: 			if (s->total > 12)
sl@0: 				return 0;
sl@0: 			/* Must be end of string */
sl@0: 			if (elem[len])
sl@0: 				return 0;
sl@0: 			if (!ipv4_from_asc(s->tmp + s->total, elem))
sl@0: 				return 0;
sl@0: 			s->total += 4;
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			if (!ipv6_hex(s->tmp + s->total, elem, len))
sl@0: 				return 0;
sl@0: 			s->total += 2;
sl@0: 			}
sl@0: 		}
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: /* Convert a string of up to 4 hex digits into the corresponding
sl@0:  * IPv6 form.
sl@0:  */
sl@0: 
sl@0: static int ipv6_hex(unsigned char *out, const char *in, int inlen)
sl@0: 	{
sl@0: 	unsigned char c;
sl@0: 	unsigned int num = 0;
sl@0: 	if (inlen > 4)
sl@0: 		return 0;
sl@0: 	while(inlen--)
sl@0: 		{
sl@0: 		c = *in++;
sl@0: 		num <<= 4;
sl@0: 		if ((c >= '0') && (c <= '9'))
sl@0: 			num |= c - '0';
sl@0: 		else if ((c >= 'A') && (c <= 'F'))
sl@0: 			num |= c - 'A' + 10;
sl@0: 		else if ((c >= 'a') && (c <= 'f'))
sl@0: 			num |=  c - 'a' + 10;
sl@0: 		else
sl@0: 			return 0;
sl@0: 		}
sl@0: 	out[0] = num >> 8;
sl@0: 	out[1] = num & 0xff;
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: EXPORT_C int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE)*dn_sk,
sl@0: 						unsigned long chtype)
sl@0: 	{
sl@0: 	CONF_VALUE *v;
sl@0: 	int i, mval;
sl@0: 	char *p, *type;
sl@0: 	if (!nm)
sl@0: 		return 0;
sl@0: 
sl@0: 	for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++)
sl@0: 		{
sl@0: 		v=sk_CONF_VALUE_value(dn_sk,i);
sl@0: 		type=v->name;
sl@0: 		/* Skip past any leading X. X: X, etc to allow for
sl@0: 		 * multiple instances 
sl@0: 		 */
sl@0: 		for(p = type; *p ; p++) 
sl@0: #ifndef CHARSET_EBCDIC
sl@0: 			if ((*p == ':') || (*p == ',') || (*p == '.'))
sl@0: #else
sl@0: 			if ((*p == os_toascii[':']) || (*p == os_toascii[',']) || (*p == os_toascii['.']))
sl@0: #endif
sl@0: 				{
sl@0: 				p++;
sl@0: 				if(*p) type = p;
sl@0: 				break;
sl@0: 				}
sl@0: #ifndef CHARSET_EBCDIC
sl@0: 		if (*type == '+')
sl@0: #else
sl@0: 		if (*type == os_toascii['+'])
sl@0: #endif
sl@0: 			{
sl@0: 			mval = -1;
sl@0: 			type++;
sl@0: 			}
sl@0: 		else
sl@0: 			mval = 0;
sl@0: 		if (!X509_NAME_add_entry_by_txt(nm,type, chtype,
sl@0: 				(unsigned char *) v->value,-1,-1,mval))
sl@0: 					return 0;
sl@0: 
sl@0: 		}
sl@0: 	return 1;
sl@0: 	}