X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fx509v3%2Fv3_utl.c;h=7c1d26fc398bb57e15c66e17be5d77c8a48c92d2;hp=3e3d7ac916f3b9217230307e3cc013809c04e05c;hb=96ea4ae91c7fda9fd28a013182b0e8dc67b7ac7d;hpb=535d79da635c2015a88a0184321296bdcb201848

diff --git a/crypto/x509v3/v3_utl.c b/crypto/x509v3/v3_utl.c
index 3e3d7ac916..7c1d26fc39 100644
--- a/crypto/x509v3/v3_utl.c
+++ b/crypto/x509v3/v3_utl.c
@@ -1,9 +1,9 @@
 /* v3_utl.c */
 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 1999.
+ * project.
  */
 /* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2003 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -63,6 +63,7 @@
 #include "cryptlib.h"
 #include <openssl/conf.h>
 #include <openssl/x509v3.h>
+#include <openssl/bn.h>
 
 static char *strip_spaces(char *name);
 static int sk_strcmp(const char * const *a, const char * const *b);
@@ -70,6 +71,11 @@ static STACK *get_email(X509_NAME *name, GENERAL_NAMES *gens);
 static void str_free(void *str);
 static int append_ia5(STACK **sk, ASN1_IA5STRING *email);
 
+static int ipv4_from_asc(unsigned char *v4, const char *in);
+static int ipv6_from_asc(unsigned char *v6, const char *in);
+static int ipv6_cb(const char *elem, int len, void *usr);
+static int ipv6_hex(unsigned char *out, const char *in, int inlen);
+
 /* Add a CONF_VALUE name value pair to stack */
 
 int X509V3_add_value(const char *name, const char *value,
@@ -156,11 +162,11 @@ ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)
 	ASN1_INTEGER *aint;
 	int isneg, ishex;
 	int ret;
-	bn = BN_new();
 	if (!value) {
 		X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE);
 		return 0;
 	}
+	bn = BN_new();
 	if (value[0] == '-') {
 		value++;
 		isneg = 1;
@@ -174,7 +180,8 @@ ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)
 	if (ishex) ret = BN_hex2bn(&bn, value);
 	else ret = BN_dec2bn(&bn, value);
 
-	if (!ret) {
+	if (!ret || value[ret]) {
+		BN_free(bn);
 		X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR);
 		return 0;
 	}
@@ -269,7 +276,7 @@ STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line)
 				*p = 0;
 				ntmp = strip_spaces(q);
 				q = p + 1;
-#ifdef DEBUG
+#if 0
 				printf("%s\n", ntmp);
 #endif
 				if(!ntmp) {
@@ -285,7 +292,7 @@ STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line)
 				state = HDR_NAME;
 				*p = 0;
 				vtmp = strip_spaces(q);
-#ifdef DEBUG
+#if 0
 				printf("%s\n", ntmp);
 #endif
 				if(!vtmp) {
@@ -302,7 +309,7 @@ STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line)
 
 	if(state == HDR_VALUE) {
 		vtmp = strip_spaces(q);
-#ifdef DEBUG
+#if 0
 		printf("%s=%s\n", ntmp, vtmp);
 #endif
 		if(!vtmp) {
@@ -312,7 +319,7 @@ STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line)
 		X509V3_add_value(ntmp, vtmp, &values);
 	} else {
 		ntmp = strip_spaces(q);
-#ifdef DEBUG
+#if 0
 		printf("%s\n", ntmp);
 #endif
 		if(!ntmp) {
@@ -491,7 +498,7 @@ static STACK *get_email(X509_NAME *name, GENERAL_NAMES *gens)
 	i = -1;
 	/* First supplied X509_NAME */
 	while((i = X509_NAME_get_index_by_NID(name,
-					 NID_pkcs9_emailAddress, i)) > 0) {
+					 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;
@@ -533,3 +540,305 @@ void X509_email_free(STACK *sk)
 {
 	sk_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 */
+
+	/* Copy initial part */
+	if (v6stat.zero_pos > 0)
+		memcpy(v6, v6stat.tmp, v6stat.zero_pos);
+	/* Zero middle */
+	if (v6stat.total != 16)
+		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);
+
+	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;
+	}