/* v3_utl.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 1999.
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * 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
#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);
+static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name, GENERAL_NAMES *gens);
+static void str_free(OPENSSL_STRING str);
+static int append_ia5(STACK_OF(OPENSSL_STRING) **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 */
CONF_VALUE *vtmp = NULL;
char *tname = NULL, *tvalue = NULL;
if(name && !(tname = BUF_strdup(name))) goto err;
- if(value && !(tvalue = BUF_strdup(value))) goto err;;
+ if(value && !(tvalue = BUF_strdup(value))) goto err;
if(!(vtmp = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) goto err;
- if(!*extlist && !(*extlist = sk_CONF_VALUE_new(NULL))) goto err;
+ if(!*extlist && !(*extlist = sk_CONF_VALUE_new_null())) goto err;
vtmp->section = NULL;
vtmp->name = tname;
vtmp->value = tvalue;
{
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;
}
/*#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;
*p = 0;
ntmp = strip_spaces(q);
q = p + 1;
-#ifdef DEBUG
+#if 0
printf("%s\n", ntmp);
#endif
if(!ntmp) {
state = HDR_NAME;
*p = 0;
vtmp = strip_spaces(q);
-#ifdef DEBUG
+#if 0
printf("%s\n", ntmp);
#endif
if(!vtmp) {
if(state == HDR_VALUE) {
vtmp = strip_spaces(q);
-#ifdef DEBUG
+#if 0
printf("%s=%s\n", ntmp, vtmp);
#endif
if(!vtmp) {
X509V3_add_value(ntmp, vtmp, &values);
} else {
ntmp = strip_spaces(q);
-#ifdef DEBUG
+#if 0
printf("%s\n", ntmp);
#endif
if(!ntmp) {
/* 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)
+char *hex_to_string(const unsigned char *buffer, long len)
{
char *tmp, *q;
- unsigned char *p;
+ const unsigned char *p;
int i;
- static char hexdig[] = "0123456789ABCDEF";
+ 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);
*q++ = ':';
}
q[-1] = 0;
+#ifdef CHARSET_EBCDIC
+ ebcdic2ascii(tmp, tmp, q - tmp - 1);
+#endif
+
return tmp;
}
* a buffer
*/
-unsigned char *string_to_hex(char *str, long *len)
+unsigned char *string_to_hex(const char *str, long *len)
{
unsigned char *hexbuf, *q;
unsigned char ch, cl, *p;
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);
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;
+ }