X-Git-Url: https://git.openssl.org/gitweb/?a=blobdiff_plain;f=crypto%2Fx509v3%2Fv3_utl.c;h=2af05e555b7772188c451e87fca5612bf2a5c1a8;hb=155bd1137e3c87c64be1f09ddfa2120adcd25e67;hp=4c2c4a9483913aa01302b59f3c32add2f478b2b6;hpb=51ca375e7e640c6f1441d74abcda731ef7306d0c;p=openssl.git

diff --git a/crypto/x509v3/v3_utl.c b/crypto/x509v3/v3_utl.c
index 4c2c4a9483..2af05e555b 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
@@ -65,6 +65,15 @@
 #include <openssl/x509v3.h>
 
 static char *strip_spaces(char *name);
+static int sk_strcmp(const char * const *a, const char * const *b);
+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 */
 
@@ -75,8 +84,8 @@ int X509V3_add_value(const char *name, const char *value,
 	char *tname = NULL, *tvalue = NULL;
 	if(name && !(tname = BUF_strdup(name))) goto err;
 	if(value && !(tvalue = BUF_strdup(value))) goto err;;
-	if(!(vtmp = (CONF_VALUE *)Malloc(sizeof(CONF_VALUE)))) goto err;
-	if(!*extlist && !(*extlist = sk_CONF_VALUE_new(NULL))) goto err;
+	if(!(vtmp = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) goto err;
+	if(!*extlist && !(*extlist = sk_CONF_VALUE_new_null())) goto err;
 	vtmp->section = NULL;
 	vtmp->name = tname;
 	vtmp->value = tvalue;
@@ -84,9 +93,9 @@ int X509V3_add_value(const char *name, const char *value,
 	return 1;
 	err:
 	X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE);
-	if(vtmp) Free(vtmp);
-	if(tname) Free(tname);
-	if(tvalue) Free(tvalue);
+	if(vtmp) OPENSSL_free(vtmp);
+	if(tname) OPENSSL_free(tname);
+	if(tvalue) OPENSSL_free(tvalue);
 	return 0;
 }
 
@@ -101,10 +110,10 @@ int X509V3_add_value_uchar(const char *name, const unsigned char *value,
 void X509V3_conf_free(CONF_VALUE *conf)
 {
 	if(!conf) return;
-	if(conf->name) Free(conf->name);
-	if(conf->value) Free(conf->value);
-	if(conf->section) Free(conf->section);
-	Free(conf);
+	if(conf->name) OPENSSL_free(conf->name);
+	if(conf->value) OPENSSL_free(conf->value);
+	if(conf->section) OPENSSL_free(conf->section);
+	OPENSSL_free(conf);
 }
 
 int X509V3_add_value_bool(const char *name, int asn1_bool,
@@ -150,21 +159,41 @@ ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)
 {
 	BIGNUM *bn = NULL;
 	ASN1_INTEGER *aint;
-	bn = BN_new();
-	if(!value) {
+	int isneg, ishex;
+	int ret;
+	if (!value) {
 		X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE);
 		return 0;
 	}
-	if(!BN_dec2bn(&bn, value)) {
+	bn = BN_new();
+	if (value[0] == '-') {
+		value++;
+		isneg = 1;
+	} else isneg = 0;
+
+	if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) {
+		value += 2;
+		ishex = 1;
+	} else ishex = 0;
+
+	if (ishex) ret = BN_hex2bn(&bn, value);
+	else ret = BN_dec2bn(&bn, value);
+
+	if (!ret || value[ret]) {
+		BN_free(bn);
 		X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR);
 		return 0;
 	}
 
-	if(!(aint = BN_to_ASN1_INTEGER(bn, NULL))) {
+	if (isneg && BN_is_zero(bn)) isneg = 0;
+
+	aint = BN_to_ASN1_INTEGER(bn, NULL);
+	BN_free(bn);
+	if (!aint) {
 		X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
 		return 0;
 	}
-	BN_free(bn);
+	if (isneg) aint->type |= V_ASN1_NEG;
 	return aint;
 }
 
@@ -176,7 +205,7 @@ int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
 	if(!aint) return 1;
 	if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0;
 	ret = X509V3_add_value(name, strtmp, extlist);
-	Free(strtmp);
+	OPENSSL_free(strtmp);
 	return ret;
 }
 
@@ -217,7 +246,7 @@ int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint)
 
 /*#define DEBUG*/
 
-STACK_OF(CONF_VALUE) *X509V3_parse_list(char *line)
+STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line)
 {
 	char *p, *q, c;
 	char *ntmp, *vtmp;
@@ -246,7 +275,7 @@ STACK_OF(CONF_VALUE) *X509V3_parse_list(char *line)
 				*p = 0;
 				ntmp = strip_spaces(q);
 				q = p + 1;
-#ifdef DEBUG
+#if 0
 				printf("%s\n", ntmp);
 #endif
 				if(!ntmp) {
@@ -262,7 +291,7 @@ STACK_OF(CONF_VALUE) *X509V3_parse_list(char *line)
 				state = HDR_NAME;
 				*p = 0;
 				vtmp = strip_spaces(q);
-#ifdef DEBUG
+#if 0
 				printf("%s\n", ntmp);
 #endif
 				if(!vtmp) {
@@ -279,7 +308,7 @@ STACK_OF(CONF_VALUE) *X509V3_parse_list(char *line)
 
 	if(state == HDR_VALUE) {
 		vtmp = strip_spaces(q);
-#ifdef DEBUG
+#if 0
 		printf("%s=%s\n", ntmp, vtmp);
 #endif
 		if(!vtmp) {
@@ -289,7 +318,7 @@ STACK_OF(CONF_VALUE) *X509V3_parse_list(char *line)
 		X509V3_add_value(ntmp, vtmp, &values);
 	} else {
 		ntmp = strip_spaces(q);
-#ifdef DEBUG
+#if 0
 		printf("%s\n", ntmp);
 #endif
 		if(!ntmp) {
@@ -298,11 +327,11 @@ STACK_OF(CONF_VALUE) *X509V3_parse_list(char *line)
 		}
 		X509V3_add_value(ntmp, NULL, &values);
 	}
-Free(linebuf);
+OPENSSL_free(linebuf);
 return values;
 
 err:
-Free(linebuf);
+OPENSSL_free(linebuf);
 sk_CONF_VALUE_pop_free(values, X509V3_conf_free);
 return NULL;
 
@@ -325,8 +354,9 @@ static char *strip_spaces(char *name)
 
 /* hex string utilities */
 
-/* Given a buffer of length 'len' return a Malloc'ed string with its
+/* 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(unsigned char *buffer, long len)
@@ -336,7 +366,7 @@ char *hex_to_string(unsigned char *buffer, long len)
 	int i;
 	static char hexdig[] = "0123456789ABCDEF";
 	if(!buffer || !len) return NULL;
-	if(!(tmp = Malloc(len * 3 + 1))) {
+	if(!(tmp = OPENSSL_malloc(len * 3 + 1))) {
 		X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE);
 		return NULL;
 	}
@@ -347,6 +377,10 @@ char *hex_to_string(unsigned char *buffer, long len)
 		*q++ = ':';
 	}
 	q[-1] = 0;
+#ifdef CHARSET_EBCDIC
+	ebcdic2ascii(tmp, tmp, q - tmp - 1);
+#endif
+
 	return tmp;
 }
 
@@ -362,14 +396,20 @@ unsigned char *string_to_hex(char *str, long *len)
 		X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT);
 		return NULL;
 	}
-	if(!(hexbuf = Malloc(strlen(str) >> 1))) goto err;
+	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);
-			Free(hexbuf);
+			OPENSSL_free(hexbuf);
 			return NULL;
 		}
 		if(isupper(ch)) ch = tolower(ch);
@@ -391,12 +431,12 @@ unsigned char *string_to_hex(char *str, long *len)
 	return hexbuf;
 
 	err:
-	if(hexbuf) Free(hexbuf);
+	if(hexbuf) OPENSSL_free(hexbuf);
 	X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE);
 	return NULL;
 
 	badhex:
-	Free(hexbuf);
+	OPENSSL_free(hexbuf);
 	X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT);
 	return NULL;
 
@@ -416,3 +456,322 @@ int name_cmp(const char *name, const char *cmp)
 	if(!c || (c=='.')) return 0;
 	return 1;
 }
+
+static int sk_strcmp(const char * const *a, const char * const *b)
+{
+	return strcmp(*a, *b);
+}
+
+STACK *X509_get1_email(X509 *x)
+{
+	GENERAL_NAMES *gens;
+	STACK *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 *X509_REQ_get1_email(X509_REQ *x)
+{
+	GENERAL_NAMES *gens;
+	STACK_OF(X509_EXTENSION) *exts;
+	STACK *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 *get_email(X509_NAME *name, GENERAL_NAMES *gens)
+{
+	STACK *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(void *str)
+{
+	OPENSSL_free(str);
+}
+
+static int append_ia5(STACK **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_new(sk_strcmp);
+	if(!*sk) return 0;
+	/* Don't add duplicates */
+	if(sk_find(*sk, (char *)email->data) != -1) return 1;
+	emtmp = BUF_strdup((char *)email->data);
+	if(!emtmp || !sk_push(*sk, emtmp)) {
+		X509_email_free(*sk);
+		*sk = NULL;
+		return 0;
+	}
+	return 1;
+}
+
+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 */
+
+	if (strchr(ipasc, ':'))
+		{
+		if (!ipv6_from_asc(ipout, ipasc))
+			return NULL;
+		iplen = 16;
+		}
+	else
+		{
+		if (!ipv4_from_asc(ipout, ipasc))
+			return NULL;
+		iplen = 4;
+		}
+
+	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;
+	}
+
+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;
+	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;
+				}
+		if (!X509_NAME_add_entry_by_txt(nm,type, chtype,
+				(unsigned char *) v->value,-1,-1,0))
+					return 0;
+
+		}
+	return 1;
+	}