9 files changed, 488 insertions, 42 deletions

diff --git a/src/lib/libcrypto/x509v3/ext_dat.h b/src/lib/libcrypto/x509v3/ext_dat.h
index 5442480595..d8328ac468 100644
--- a/src/lib/libcrypto/x509v3/ext_dat.h
+++ b/src/lib/libcrypto/x509v3/ext_dat.h
@@ -3,7 +3,7 @@
  * project 1999.
  */
 /* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2004 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
@@ -60,10 +60,11 @@
 extern X509V3_EXT_METHOD v3_bcons, v3_nscert, v3_key_usage, v3_ext_ku;
 extern X509V3_EXT_METHOD v3_pkey_usage_period, v3_sxnet, v3_info, v3_sinfo;
 extern X509V3_EXT_METHOD v3_ns_ia5_list[], v3_alt[], v3_skey_id, v3_akey_id;
-extern X509V3_EXT_METHOD v3_crl_num, v3_crl_reason, v3_crl_invdate, v3_cpols, v3_crld;
+extern X509V3_EXT_METHOD v3_crl_num, v3_crl_reason, v3_crl_invdate;
+extern X509V3_EXT_METHOD v3_delta_crl, v3_cpols, v3_crld;
 extern X509V3_EXT_METHOD v3_ocsp_nonce, v3_ocsp_accresp, v3_ocsp_acutoff;
 extern X509V3_EXT_METHOD v3_ocsp_crlid, v3_ocsp_nocheck, v3_ocsp_serviceloc;
-extern X509V3_EXT_METHOD v3_crl_hold;
+extern X509V3_EXT_METHOD v3_crl_hold, v3_pci;
 
 /* This table will be searched using OBJ_bsearch so it *must* kept in
  * order of the ext_nid values.
@@ -89,6 +90,7 @@ static X509V3_EXT_METHOD *standard_exts[] = {
 &v3_akey_id,
 &v3_crld,
 &v3_ext_ku,
+&v3_delta_crl,
 &v3_crl_reason,
 #ifndef OPENSSL_NO_OCSP
 &v3_crl_invdate,
@@ -105,8 +107,9 @@ static X509V3_EXT_METHOD *standard_exts[] = {
 #endif
 &v3_sinfo,
 #ifndef OPENSSL_NO_OCSP
-&v3_crl_hold
+&v3_crl_hold,
 #endif
+&v3_pci,
 };
 
 /* Number of standard extensions */
diff --git a/src/lib/libcrypto/x509v3/v3_bitst.c b/src/lib/libcrypto/x509v3/v3_bitst.c
index 16cf125562..274965306d 100644
--- a/src/lib/libcrypto/x509v3/v3_bitst.c
+++ b/src/lib/libcrypto/x509v3/v3_bitst.c
@@ -124,7 +124,12 @@ static ASN1_BIT_STRING *v2i_ASN1_BIT_STRING(X509V3_EXT_METHOD *method,
                 for(bnam = method->usr_data; bnam->lname; bnam++) {
                         if(!strcmp(bnam->sname, val->name) ||
                                 !strcmp(bnam->lname, val->name) ) {
-                                ASN1_BIT_STRING_set_bit(bs, bnam->bitnum, 1);
+                                if(!ASN1_BIT_STRING_set_bit(bs, bnam->bitnum, 1)) {
+                                        X509V3err(X509V3_F_V2I_ASN1_BIT_STRING,
+                                                ERR_R_MALLOC_FAILURE);
+                                        M_ASN1_BIT_STRING_free(bs);
+                                        return NULL;
+                                }
                                 break;
                         }
                 }
diff --git a/src/lib/libcrypto/x509v3/v3_ia5.c b/src/lib/libcrypto/x509v3/v3_ia5.c
index f9414456de..9683afa47c 100644
--- a/src/lib/libcrypto/x509v3/v3_ia5.c
+++ b/src/lib/libcrypto/x509v3/v3_ia5.c
@@ -82,7 +82,10 @@ static char *i2s_ASN1_IA5STRING(X509V3_EXT_METHOD *method,
 {
         char *tmp;
         if(!ia5 || !ia5->length) return NULL;
-        if (!(tmp = OPENSSL_malloc(ia5->length + 1))) return NULL;
+        if(!(tmp = OPENSSL_malloc(ia5->length + 1))) {
+                X509V3err(X509V3_F_I2S_ASN1_IA5STRING,ERR_R_MALLOC_FAILURE);
+                return NULL;
+        }
         memcpy(tmp, ia5->data, ia5->length);
         tmp[ia5->length] = 0;
         return tmp;
diff --git a/src/lib/libcrypto/x509v3/v3_int.c b/src/lib/libcrypto/x509v3/v3_int.c
index f34cbfb731..7a43b4717b 100644
--- a/src/lib/libcrypto/x509v3/v3_int.c
+++ b/src/lib/libcrypto/x509v3/v3_int.c
@@ -3,7 +3,7 @@
  * project 1999.
  */
 /* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2004 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
@@ -61,9 +61,16 @@
 #include <openssl/x509v3.h>
 
 X509V3_EXT_METHOD v3_crl_num = { 
-NID_crl_number, 0, ASN1_ITEM_ref(ASN1_INTEGER),
-0,0,0,0,
-(X509V3_EXT_I2S)i2s_ASN1_INTEGER,
-0,
-0,0,0,0, NULL};
+        NID_crl_number, 0, ASN1_ITEM_ref(ASN1_INTEGER),
+        0,0,0,0,
+        (X509V3_EXT_I2S)i2s_ASN1_INTEGER,
+        0,
+        0,0,0,0, NULL};
+
+X509V3_EXT_METHOD v3_delta_crl = { 
+        NID_delta_crl, 0, ASN1_ITEM_ref(ASN1_INTEGER),
+        0,0,0,0,
+        (X509V3_EXT_I2S)i2s_ASN1_INTEGER,
+        0,
+        0,0,0,0, NULL};
 
diff --git a/src/lib/libcrypto/x509v3/v3_pci.c b/src/lib/libcrypto/x509v3/v3_pci.c
new file mode 100644
index 0000000000..b32d968619
--- /dev/null
+++ b/src/lib/libcrypto/x509v3/v3_pci.c
@@ -0,0 +1,313 @@
+/* v3_pci.c -*- mode:C; c-file-style: "eay" -*- */
+/* Contributed to the OpenSSL Project 2004
+ * by Richard Levitte (richard@levitte.org)
+ */
+/* Copyright (c) 2004 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/conf.h>
+#include <openssl/x509v3.h>
+
+static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *ext,
+        BIO *out, int indent);
+static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
+        X509V3_CTX *ctx, char *str);
+
+X509V3_EXT_METHOD v3_pci =
+        { NID_proxyCertInfo, 0, ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION),
+          0,0,0,0,
+          0,0,
+          NULL, NULL,
+          (X509V3_EXT_I2R)i2r_pci,
+          (X509V3_EXT_R2I)r2i_pci,
+          NULL,
+        };
+
+static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *pci,
+        BIO *out, int indent)
+        {
+        BIO_printf(out, "%*sPath Length Constraint: ", indent, "");
+        if (pci->pcPathLengthConstraint)
+          i2a_ASN1_INTEGER(out, pci->pcPathLengthConstraint);
+        else
+          BIO_printf(out, "infinite");
+        BIO_puts(out, "\n");
+        BIO_printf(out, "%*sPolicy Language: ", indent, "");
+        i2a_ASN1_OBJECT(out, pci->proxyPolicy->policyLanguage);
+        BIO_puts(out, "\n");
+        if (pci->proxyPolicy->policy && pci->proxyPolicy->policy->data)
+          BIO_printf(out, "%*sPolicy Text: %s\n", indent, "",
+                     pci->proxyPolicy->policy->data);
+        return 1;
+        }
+
+static int process_pci_value(CONF_VALUE *val,
+        ASN1_OBJECT **language, ASN1_INTEGER **pathlen,
+        ASN1_OCTET_STRING **policy)
+        {
+        int free_policy = 0;
+
+        if (strcmp(val->name, "language") == 0)
+                {
+                if (*language)
+                        {
+                        X509V3err(X509V3_F_R2I_PCI,X509V3_R_POLICY_LANGUAGE_ALREADTY_DEFINED);
+                        X509V3_conf_err(val);
+                        return 0;
+                        }
+                if (!(*language = OBJ_txt2obj(val->value, 0)))
+                        {
+                        X509V3err(X509V3_F_R2I_PCI,X509V3_R_INVALID_OBJECT_IDENTIFIER);
+                        X509V3_conf_err(val);
+                        return 0;
+                        }
+                }
+        else if (strcmp(val->name, "pathlen") == 0)
+                {
+                if (*pathlen)
+                        {
+                        X509V3err(X509V3_F_R2I_PCI,X509V3_R_POLICY_PATH_LENGTH_ALREADTY_DEFINED);
+                        X509V3_conf_err(val);
+                        return 0;
+                        }
+                if (!X509V3_get_value_int(val, pathlen))
+                        {
+                        X509V3err(X509V3_F_R2I_PCI,X509V3_R_POLICY_PATH_LENGTH);
+                        X509V3_conf_err(val);
+                        return 0;
+                        }
+                }
+        else if (strcmp(val->name, "policy") == 0)
+                {
+                unsigned char *tmp_data = NULL;
+                long val_len;
+                if (!*policy)
+                        {
+                        *policy = ASN1_OCTET_STRING_new();
+                        if (!*policy)
+                                {
+                                X509V3err(X509V3_F_R2I_PCI,ERR_R_MALLOC_FAILURE);
+                                X509V3_conf_err(val);
+                                return 0;
+                                }
+                        free_policy = 1;
+                        }
+                if (strncmp(val->value, "hex:", 4) == 0)
+                        {
+                        unsigned char *tmp_data2 =
+                                string_to_hex(val->value + 4, &val_len);
+
+                        if (!tmp_data2) goto err;
+
+                        tmp_data = OPENSSL_realloc((*policy)->data,
+                                (*policy)->length + val_len + 1);
+                        if (tmp_data)
+                                {
+                                (*policy)->data = tmp_data;
+                                memcpy(&(*policy)->data[(*policy)->length],
+                                        tmp_data2, val_len);
+                                (*policy)->length += val_len;
+                                (*policy)->data[(*policy)->length] = '\0';
+                                }
+                        }
+                else if (strncmp(val->value, "file:", 5) == 0)
+                        {
+                        unsigned char buf[2048];
+                        int n;
+                        BIO *b = BIO_new_file(val->value + 5, "r");
+                        if (!b)
+                                {
+                                X509V3err(X509V3_F_R2I_PCI,ERR_R_BIO_LIB);
+                                X509V3_conf_err(val);
+                                goto err;
+                                }
+                        while((n = BIO_read(b, buf, sizeof(buf))) > 0
+                                || (n == 0 && BIO_should_retry(b)))
+                                {
+                                if (!n) continue;
+
+                                tmp_data = OPENSSL_realloc((*policy)->data,
+                                        (*policy)->length + n + 1);
+
+                                if (!tmp_data)
+                                        break;
+
+                                (*policy)->data = tmp_data;
+                                memcpy(&(*policy)->data[(*policy)->length],
+                                        buf, n);
+                                (*policy)->length += n;
+                                (*policy)->data[(*policy)->length] = '\0';
+                                }
+
+                        if (n < 0)
+                                {
+                                X509V3err(X509V3_F_R2I_PCI,ERR_R_BIO_LIB);
+                                X509V3_conf_err(val);
+                                goto err;
+                                }
+                        }
+                else if (strncmp(val->value, "text:", 5) == 0)
+                        {
+                        val_len = strlen(val->value + 5);
+                        tmp_data = OPENSSL_realloc((*policy)->data,
+                                (*policy)->length + val_len + 1);
+                        if (tmp_data)
+                                {
+                                (*policy)->data = tmp_data;
+                                memcpy(&(*policy)->data[(*policy)->length],
+                                        val->value + 5, val_len);
+                                (*policy)->length += val_len;
+                                (*policy)->data[(*policy)->length] = '\0';
+                                }
+                        }
+                else
+                        {
+                        X509V3err(X509V3_F_R2I_PCI,X509V3_R_INCORRECT_POLICY_SYNTAX_TAG);
+                        X509V3_conf_err(val);
+                        goto err;
+                        }
+                if (!tmp_data)
+                        {
+                        X509V3err(X509V3_F_R2I_PCI,ERR_R_MALLOC_FAILURE);
+                        X509V3_conf_err(val);
+                        goto err;
+                        }
+                }
+        return 1;
+err:
+        if (free_policy)
+                {
+                ASN1_OCTET_STRING_free(*policy);
+                *policy = NULL;
+                }
+        return 0;
+        }
+
+static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
+        X509V3_CTX *ctx, char *value)
+        {
+        PROXY_CERT_INFO_EXTENSION *pci = NULL;
+        STACK_OF(CONF_VALUE) *vals;
+        ASN1_OBJECT *language = NULL;
+        ASN1_INTEGER *pathlen = NULL;
+        ASN1_OCTET_STRING *policy = NULL;
+        int i, j;
+
+        vals = X509V3_parse_list(value);
+        for (i = 0; i < sk_CONF_VALUE_num(vals); i++)
+                {
+                CONF_VALUE *cnf = sk_CONF_VALUE_value(vals, i);
+                if (!cnf->name || (*cnf->name != '@' && !cnf->value))
+                        {
+                        X509V3err(X509V3_F_R2I_PCI,X509V3_R_INVALID_PROXY_POLICY_SETTING);
+                        X509V3_conf_err(cnf);
+                        goto err;
+                        }
+                if (*cnf->name == '@')
+                        {
+                        STACK_OF(CONF_VALUE) *sect;
+                        int success_p = 1;
+
+                        sect = X509V3_get_section(ctx, cnf->name + 1);
+                        if (!sect)
+                                {
+                                X509V3err(X509V3_F_R2I_PCI,X509V3_R_INVALID_SECTION);
+                                X509V3_conf_err(cnf);
+                                goto err;
+                                }
+                        for (j = 0; success_p && j < sk_CONF_VALUE_num(sect); j++)
+                                {
+                                success_p =
+                                        process_pci_value(sk_CONF_VALUE_value(sect, j),
+                                                &language, &pathlen, &policy);
+                                }
+                        X509V3_section_free(ctx, sect);
+                        if (!success_p)
+                                goto err;
+                        }
+                else
+                        {
+                        if (!process_pci_value(cnf,
+                                        &language, &pathlen, &policy))
+                                {
+                                X509V3_conf_err(cnf);
+                                goto err;
+                                }
+                        }
+                }
+
+        /* Language is mandatory */
+        if (!language)
+                {
+                X509V3err(X509V3_F_R2I_PCI,X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED);
+                goto err;
+                }
+        i = OBJ_obj2nid(language);
+        if ((i == NID_Independent || i == NID_id_ppl_inheritAll) && policy)
+                {
+                X509V3err(X509V3_F_R2I_PCI,X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY);
+                goto err;
+                }
+
+        pci = PROXY_CERT_INFO_EXTENSION_new();
+        if (!pci)
+                {
+                X509V3err(X509V3_F_R2I_PCI,ERR_R_MALLOC_FAILURE);
+                goto err;
+                }
+        pci->proxyPolicy = PROXY_POLICY_new();
+        if (!pci->proxyPolicy)
+                {
+                X509V3err(X509V3_F_R2I_PCI,ERR_R_MALLOC_FAILURE);
+                goto err;
+                }
+
+        pci->proxyPolicy->policyLanguage = language; language = NULL;
+        pci->proxyPolicy->policy = policy; policy = NULL;
+        pci->pcPathLengthConstraint = pathlen; pathlen = NULL;
+        goto end;
+err:
+        if (language) { ASN1_OBJECT_free(language); language = NULL; }
+        if (pathlen) { ASN1_INTEGER_free(pathlen); pathlen = NULL; }
+        if (policy) { ASN1_OCTET_STRING_free(policy); policy = NULL; }
+        if (pci && pci->proxyPolicy)
+                {
+                PROXY_POLICY_free(pci->proxyPolicy);
+                pci->proxyPolicy = NULL;
+                }
+        if (pci) { PROXY_CERT_INFO_EXTENSION_free(pci); pci = NULL; }
+end:
+        sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
+        return pci;
+        }
diff --git a/src/lib/libcrypto/x509v3/v3_pcia.c b/src/lib/libcrypto/x509v3/v3_pcia.c
new file mode 100644
index 0000000000..bb362e0e5a
--- /dev/null
+++ b/src/lib/libcrypto/x509v3/v3_pcia.c
@@ -0,0 +1,55 @@
+/* v3_pcia.c -*- mode:C; c-file-style: "eay" -*- */
+/* Contributed to the OpenSSL Project 2004
+ * by Richard Levitte (richard@levitte.org)
+ */
+/* Copyright (c) 2004 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/x509v3.h>
+
+ASN1_SEQUENCE(PROXY_POLICY) =
+        {
+        ASN1_SIMPLE(PROXY_POLICY,policyLanguage,ASN1_OBJECT),
+        ASN1_OPT(PROXY_POLICY,policy,ASN1_OCTET_STRING)
+} ASN1_SEQUENCE_END(PROXY_POLICY)
+
+IMPLEMENT_ASN1_FUNCTIONS(PROXY_POLICY)
+
+ASN1_SEQUENCE(PROXY_CERT_INFO_EXTENSION) =
+        {
+        ASN1_OPT(PROXY_CERT_INFO_EXTENSION,pcPathLengthConstraint,ASN1_INTEGER),
+        ASN1_SIMPLE(PROXY_CERT_INFO_EXTENSION,proxyPolicy,PROXY_POLICY)
+} ASN1_SEQUENCE_END(PROXY_CERT_INFO_EXTENSION)
+
+IMPLEMENT_ASN1_FUNCTIONS(PROXY_CERT_INFO_EXTENSION)
diff --git a/src/lib/libcrypto/x509v3/v3_purp.c b/src/lib/libcrypto/x509v3/v3_purp.c
index b3d1ae5d1c..bbdf6da493 100644
--- a/src/lib/libcrypto/x509v3/v3_purp.c
+++ b/src/lib/libcrypto/x509v3/v3_purp.c
@@ -63,7 +63,6 @@
 
 static void x509v3_cache_extensions(X509 *x);
 
-static int ca_check(const X509 *x);
 static int check_ssl_ca(const X509 *x);
 static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x, int ca);
 static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x, int ca);
@@ -286,7 +285,8 @@ int X509_supported_extension(X509_EXTENSION *ex)
                 NID_key_usage,          /* 83 */
                 NID_subject_alt_name,   /* 85 */
                 NID_basic_constraints,  /* 87 */
-                NID_ext_key_usage       /* 126 */
+                NID_ext_key_usage,      /* 126 */
+                NID_proxyCertInfo       /* 661 */
         };
 
         int ex_nid;
@@ -307,6 +307,7 @@ int X509_supported_extension(X509_EXTENSION *ex)
 static void x509v3_cache_extensions(X509 *x)
 {
         BASIC_CONSTRAINTS *bs;
+        PROXY_CERT_INFO_EXTENSION *pci;
         ASN1_BIT_STRING *usage;
         ASN1_BIT_STRING *ns;
         EXTENDED_KEY_USAGE *extusage;
@@ -335,6 +336,16 @@ static void x509v3_cache_extensions(X509 *x)
                 BASIC_CONSTRAINTS_free(bs);
                 x->ex_flags |= EXFLAG_BCONS;
         }
+        /* Handle proxy certificates */
+        if((pci=X509_get_ext_d2i(x, NID_proxyCertInfo, NULL, NULL))) {
+                if (x->ex_flags & EXFLAG_CA
+                    || X509_get_ext_by_NID(x, NID_subject_alt_name, 0) >= 0
+                    || X509_get_ext_by_NID(x, NID_issuer_alt_name, 0) >= 0) {
+                        x->ex_flags |= EXFLAG_INVALID;
+                }
+                PROXY_CERT_INFO_EXTENSION_free(pci);
+                x->ex_flags |= EXFLAG_PROXY;
+        }
         /* Handle key usage */
         if((usage=X509_get_ext_d2i(x, NID_key_usage, NULL, NULL))) {
                 if(usage->length > 0) {
@@ -426,7 +437,7 @@ static void x509v3_cache_extensions(X509 *x)
 #define ns_reject(x, usage) \
         (((x)->ex_flags & EXFLAG_NSCERT) && !((x)->ex_nscert & (usage)))
 
-static int ca_check(const X509 *x)
+static int check_ca(const X509 *x)
 {
         /* keyUsage if present should allow cert signing */
         if(ku_reject(x, KU_KEY_CERT_SIGN)) return 0;
@@ -435,25 +446,37 @@ static int ca_check(const X509 *x)
                 /* If basicConstraints says not a CA then say so */
                 else return 0;
         } else {
+                /* we support V1 roots for...  uh, I don't really know why. */
                 if((x->ex_flags & V1_ROOT) == V1_ROOT) return 3;
                 /* If key usage present it must have certSign so tolerate it */
                 else if (x->ex_flags & EXFLAG_KUSAGE) return 4;
-                else return 2;
+                /* Older certificates could have Netscape-specific CA types */
+                else if (x->ex_flags & EXFLAG_NSCERT
+                         && x->ex_nscert & NS_ANY_CA) return 5;
+                /* can this still be regarded a CA certificate?  I doubt it */
+                return 0;
         }
 }
 
+int X509_check_ca(X509 *x)
+{
+        if(!(x->ex_flags & EXFLAG_SET)) {
+                CRYPTO_w_lock(CRYPTO_LOCK_X509);
+                x509v3_cache_extensions(x);
+                CRYPTO_w_unlock(CRYPTO_LOCK_X509);
+        }
+
+        return check_ca(x);
+}
+
 /* Check SSL CA: common checks for SSL client and server */
 static int check_ssl_ca(const X509 *x)
 {
         int ca_ret;
-        ca_ret = ca_check(x);
+        ca_ret = check_ca(x);
         if(!ca_ret) return 0;
         /* check nsCertType if present */
-        if(x->ex_flags & EXFLAG_NSCERT) {
-                if(x->ex_nscert & NS_SSL_CA) return ca_ret;
-                return 0;
-        }
-        if(ca_ret != 2) return ca_ret;
+        if(ca_ret != 5 || x->ex_nscert & NS_SSL_CA) return ca_ret;
         else return 0;
 }
 
@@ -498,14 +521,10 @@ static int purpose_smime(const X509 *x, int ca)
         if(xku_reject(x,XKU_SMIME)) return 0;
         if(ca) {
                 int ca_ret;
-                ca_ret = ca_check(x);
+                ca_ret = check_ca(x);
                 if(!ca_ret) return 0;
                 /* check nsCertType if present */
-                if(x->ex_flags & EXFLAG_NSCERT) {
-                        if(x->ex_nscert & NS_SMIME_CA) return ca_ret;
-                        return 0;
-                }
-                if(ca_ret != 2) return ca_ret;
+                if(ca_ret != 5 || x->ex_nscert & NS_SMIME_CA) return ca_ret;
                 else return 0;
         }
         if(x->ex_flags & EXFLAG_NSCERT) {
@@ -539,7 +558,7 @@ static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x, int ca)
 {
         if(ca) {
                 int ca_ret;
-                if((ca_ret = ca_check(x)) != 2) return ca_ret;
+                if((ca_ret = check_ca(x)) != 2) return ca_ret;
                 else return 0;
         }
         if(ku_reject(x, KU_CRL_SIGN)) return 0;
@@ -552,17 +571,9 @@ static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x, int ca)
 
 static int ocsp_helper(const X509_PURPOSE *xp, const X509 *x, int ca)
 {
-        /* Must be a valid CA */
-        if(ca) {
-                int ca_ret;
-                ca_ret = ca_check(x);
-                if(ca_ret != 2) return ca_ret;
-                if(x->ex_flags & EXFLAG_NSCERT) {
-                        if(x->ex_nscert & NS_ANY_CA) return ca_ret;
-                        return 0;
-                }
-                return 0;
-        }
+        /* Must be a valid CA.  Should we really support the "I don't know"
+           value (2)? */
+        if(ca) return check_ca(x);
         /* leaf certificate is checked in OCSP_verify() */
         return 1;
 }
@@ -624,7 +635,13 @@ int X509_check_issued(X509 *issuer, X509 *subject)
                                 return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
                 }
         }
-        if(ku_reject(issuer, KU_KEY_CERT_SIGN)) return X509_V_ERR_KEYUSAGE_NO_CERTSIGN;
+        if(subject->ex_flags & EXFLAG_PROXY)
+                {
+                if(ku_reject(issuer, KU_DIGITAL_SIGNATURE))
+                        return X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE;
+                }
+        else if(ku_reject(issuer, KU_KEY_CERT_SIGN))
+                return X509_V_ERR_KEYUSAGE_NO_CERTSIGN;
         return X509_V_OK;
 }
 
diff --git a/src/lib/libcrypto/x509v3/v3err.c b/src/lib/libcrypto/x509v3/v3err.c
index 6458e95bb9..2df0c3ef01 100644
--- a/src/lib/libcrypto/x509v3/v3err.c
+++ b/src/lib/libcrypto/x509v3/v3err.c
@@ -1,6 +1,6 @@
 /* crypto/x509v3/v3err.c */
 /* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2005 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
@@ -72,12 +72,14 @@ static ERR_STRING_DATA X509V3_str_functs[]=
 {ERR_PACK(0,X509V3_F_DO_EXT_I2D,0),     "DO_EXT_I2D"},
 {ERR_PACK(0,X509V3_F_HEX_TO_STRING,0),  "hex_to_string"},
 {ERR_PACK(0,X509V3_F_I2S_ASN1_ENUMERATED,0),    "i2s_ASN1_ENUMERATED"},
+{ERR_PACK(0,X509V3_F_I2S_ASN1_IA5STRING,0),     "I2S_ASN1_IA5STRING"},
 {ERR_PACK(0,X509V3_F_I2S_ASN1_INTEGER,0),       "i2s_ASN1_INTEGER"},
 {ERR_PACK(0,X509V3_F_I2V_AUTHORITY_INFO_ACCESS,0),      "I2V_AUTHORITY_INFO_ACCESS"},
 {ERR_PACK(0,X509V3_F_NOTICE_SECTION,0), "NOTICE_SECTION"},
 {ERR_PACK(0,X509V3_F_NREF_NOS,0),       "NREF_NOS"},
 {ERR_PACK(0,X509V3_F_POLICY_SECTION,0), "POLICY_SECTION"},
 {ERR_PACK(0,X509V3_F_R2I_CERTPOL,0),    "R2I_CERTPOL"},
+{ERR_PACK(0,X509V3_F_R2I_PCI,0),        "R2I_PCI"},
 {ERR_PACK(0,X509V3_F_S2I_ASN1_IA5STRING,0),     "S2I_ASN1_IA5STRING"},
 {ERR_PACK(0,X509V3_F_S2I_ASN1_INTEGER,0),       "s2i_ASN1_INTEGER"},
 {ERR_PACK(0,X509V3_F_S2I_ASN1_OCTET_STRING,0),  "s2i_ASN1_OCTET_STRING"},
@@ -128,6 +130,7 @@ static ERR_STRING_DATA X509V3_str_reasons[]=
 {X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED,"extension setting not supported"},
 {X509V3_R_EXTENSION_VALUE_ERROR          ,"extension value error"},
 {X509V3_R_ILLEGAL_HEX_DIGIT              ,"illegal hex digit"},
+{X509V3_R_INCORRECT_POLICY_SYNTAX_TAG    ,"incorrect policy syntax tag"},
 {X509V3_R_INVALID_BOOLEAN_STRING         ,"invalid boolean string"},
 {X509V3_R_INVALID_EXTENSION_STRING       ,"invalid extension string"},
 {X509V3_R_INVALID_NAME                   ,"invalid name"},
@@ -139,6 +142,8 @@ static ERR_STRING_DATA X509V3_str_reasons[]=
 {X509V3_R_INVALID_OBJECT_IDENTIFIER      ,"invalid object identifier"},
 {X509V3_R_INVALID_OPTION                 ,"invalid option"},
 {X509V3_R_INVALID_POLICY_IDENTIFIER      ,"invalid policy identifier"},
+{X509V3_R_INVALID_PROXY_POLICY_IDENTIFIER,"invalid proxy policy identifier"},
+{X509V3_R_INVALID_PROXY_POLICY_SETTING   ,"invalid proxy policy setting"},
 {X509V3_R_INVALID_PURPOSE                ,"invalid purpose"},
 {X509V3_R_INVALID_SECTION                ,"invalid section"},
 {X509V3_R_INVALID_SYNTAX                 ,"invalid syntax"},
@@ -149,9 +154,16 @@ static ERR_STRING_DATA X509V3_str_reasons[]=
 {X509V3_R_NO_ISSUER_CERTIFICATE          ,"no issuer certificate"},
 {X509V3_R_NO_ISSUER_DETAILS              ,"no issuer details"},
 {X509V3_R_NO_POLICY_IDENTIFIER           ,"no policy identifier"},
+{X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED,"no proxy cert policy language defined"},
 {X509V3_R_NO_PUBLIC_KEY                  ,"no public key"},
 {X509V3_R_NO_SUBJECT_DETAILS             ,"no subject details"},
 {X509V3_R_ODD_NUMBER_OF_DIGITS           ,"odd number of digits"},
+{X509V3_R_POLICY_LANGUAGE_ALREADTY_DEFINED,"policy language alreadty defined"},
+{X509V3_R_POLICY_PATH_LENGTH             ,"policy path length"},
+{X509V3_R_POLICY_PATH_LENGTH_ALREADTY_DEFINED,"policy path length alreadty defined"},
+{X509V3_R_POLICY_SYNTAX_NOT              ,"policy syntax not"},
+{X509V3_R_POLICY_SYNTAX_NOT_CURRENTLY_SUPPORTED,"policy syntax not currently supported"},
+{X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY,"policy when proxy language requires no policy"},
 {X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS   ,"unable to get issuer details"},
 {X509V3_R_UNABLE_TO_GET_ISSUER_KEYID     ,"unable to get issuer keyid"},
 {X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT    ,"unknown bit string argument"},
diff --git a/src/lib/libcrypto/x509v3/x509v3.h b/src/lib/libcrypto/x509v3/x509v3.h
index fb07a19016..e6d91251c2 100644
--- a/src/lib/libcrypto/x509v3/x509v3.h
+++ b/src/lib/libcrypto/x509v3/x509v3.h
@@ -287,6 +287,23 @@ typedef STACK_OF(POLICYINFO) CERTIFICATEPOLICIES;
 DECLARE_STACK_OF(POLICYINFO)
 DECLARE_ASN1_SET_OF(POLICYINFO)
 
+/* Proxy certificate structures, see RFC 3820 */
+typedef struct PROXY_POLICY_st
+        {
+        ASN1_OBJECT *policyLanguage;
+        ASN1_OCTET_STRING *policy;
+        } PROXY_POLICY;
+
+typedef struct PROXY_CERT_INFO_EXTENSION_st
+        {
+        ASN1_INTEGER *pcPathLengthConstraint;
+        PROXY_POLICY *proxyPolicy;
+        } PROXY_CERT_INFO_EXTENSION;
+
+DECLARE_ASN1_FUNCTIONS(PROXY_POLICY)
+DECLARE_ASN1_FUNCTIONS(PROXY_CERT_INFO_EXTENSION)
+
+
 #define X509V3_conf_err(val) ERR_add_error_data(6, "section:", val->section, \
 ",name:", val->name, ",value:", val->value);
 
@@ -325,6 +342,7 @@ DECLARE_ASN1_SET_OF(POLICYINFO)
 #define EXFLAG_INVALID          0x80
 #define EXFLAG_SET              0x100
 #define EXFLAG_CRITICAL         0x200
+#define EXFLAG_PROXY            0x400
 
 #define KU_DIGITAL_SIGNATURE    0x0080
 #define KU_NON_REPUDIATION      0x0040
@@ -527,6 +545,7 @@ int X509V3_EXT_print_fp(FILE *out, X509_EXTENSION *ext, int flag, int indent);
 
 int X509V3_extensions_print(BIO *out, char *title, STACK_OF(X509_EXTENSION) *exts, unsigned long flag, int indent);
 
+int X509_check_ca(X509 *x);
 int X509_check_purpose(X509 *x, int id, int ca);
 int X509_supported_extension(X509_EXTENSION *ex);
 int X509_PURPOSE_set(int *p, int purpose);
@@ -564,12 +583,14 @@ void ERR_load_X509V3_strings(void);
 #define X509V3_F_DO_EXT_I2D                              135
 #define X509V3_F_HEX_TO_STRING                           111
 #define X509V3_F_I2S_ASN1_ENUMERATED                     121
+#define X509V3_F_I2S_ASN1_IA5STRING                      142
 #define X509V3_F_I2S_ASN1_INTEGER                        120
 #define X509V3_F_I2V_AUTHORITY_INFO_ACCESS               138
 #define X509V3_F_NOTICE_SECTION                          132
 #define X509V3_F_NREF_NOS                                133
 #define X509V3_F_POLICY_SECTION                          131
 #define X509V3_F_R2I_CERTPOL                             130
+#define X509V3_F_R2I_PCI                                 142
 #define X509V3_F_S2I_ASN1_IA5STRING                      100
 #define X509V3_F_S2I_ASN1_INTEGER                        108
 #define X509V3_F_S2I_ASN1_OCTET_STRING                   112
@@ -617,6 +638,7 @@ void ERR_load_X509V3_strings(void);
 #define X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED         103
 #define X509V3_R_EXTENSION_VALUE_ERROR                   116
 #define X509V3_R_ILLEGAL_HEX_DIGIT                       113
+#define X509V3_R_INCORRECT_POLICY_SYNTAX_TAG             153
 #define X509V3_R_INVALID_BOOLEAN_STRING                  104
 #define X509V3_R_INVALID_EXTENSION_STRING                105
 #define X509V3_R_INVALID_NAME                            106
@@ -628,6 +650,8 @@ void ERR_load_X509V3_strings(void);
 #define X509V3_R_INVALID_OBJECT_IDENTIFIER               110
 #define X509V3_R_INVALID_OPTION                          138
 #define X509V3_R_INVALID_POLICY_IDENTIFIER               134
+#define X509V3_R_INVALID_PROXY_POLICY_IDENTIFIER         147
+#define X509V3_R_INVALID_PROXY_POLICY_SETTING            151
 #define X509V3_R_INVALID_PURPOSE                         146
 #define X509V3_R_INVALID_SECTION                         135
 #define X509V3_R_INVALID_SYNTAX                          143
@@ -638,9 +662,16 @@ void ERR_load_X509V3_strings(void);
 #define X509V3_R_NO_ISSUER_CERTIFICATE                   121
 #define X509V3_R_NO_ISSUER_DETAILS                       127
 #define X509V3_R_NO_POLICY_IDENTIFIER                    139
+#define X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED   148
 #define X509V3_R_NO_PUBLIC_KEY                           114
 #define X509V3_R_NO_SUBJECT_DETAILS                      125
 #define X509V3_R_ODD_NUMBER_OF_DIGITS                    112
+#define X509V3_R_POLICY_LANGUAGE_ALREADTY_DEFINED        149
+#define X509V3_R_POLICY_PATH_LENGTH                      152
+#define X509V3_R_POLICY_PATH_LENGTH_ALREADTY_DEFINED     150
+#define X509V3_R_POLICY_SYNTAX_NOT                       154
+#define X509V3_R_POLICY_SYNTAX_NOT_CURRENTLY_SUPPORTED   155
+#define X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY 156
 #define X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS            122
 #define X509V3_R_UNABLE_TO_GET_ISSUER_KEYID              123
 #define X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT             111