--- /dev/null
+/* 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 H�gskolan
+ * (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);
+
+const 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_PROCESS_PCI_VALUE,X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED);
+ X509V3_conf_err(val);
+ return 0;
+ }
+ if (!(*language = OBJ_txt2obj(val->value, 0)))
+ {
+ X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_INVALID_OBJECT_IDENTIFIER);
+ X509V3_conf_err(val);
+ return 0;
+ }
+ }
+ else if (strcmp(val->name, "pathlen") == 0)
+ {
+ if (*pathlen)
+ {
+ X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED);
+ X509V3_conf_err(val);
+ return 0;
+ }
+ if (!X509V3_get_value_int(val, pathlen))
+ {
+ X509V3err(X509V3_F_PROCESS_PCI_VALUE,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_PROCESS_PCI_VALUE,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)
+ {
+ X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_ILLEGAL_HEX_DIGIT);
+ X509V3_conf_err(val);
+ 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
+ {
+ OPENSSL_free(tmp_data2);
+ /* realloc failure implies the original data space is b0rked too! */
+ (*policy)->data = NULL;
+ (*policy)->length = 0;
+ X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_MALLOC_FAILURE);
+ X509V3_conf_err(val);
+ goto err;
+ }
+ OPENSSL_free(tmp_data2);
+ }
+ 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_PROCESS_PCI_VALUE,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';
+ }
+ BIO_free_all(b);
+
+ if (n < 0)
+ {
+ X509V3err(X509V3_F_PROCESS_PCI_VALUE,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
+ {
+ /* realloc failure implies the original data space is b0rked too! */
+ (*policy)->data = NULL;
+ (*policy)->length = 0;
+ X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_MALLOC_FAILURE);
+ X509V3_conf_err(val);
+ goto err;
+ }
+ }
+ else
+ {
+ X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_INCORRECT_POLICY_SYNTAX_TAG);
+ X509V3_conf_err(val);
+ goto err;
+ }
+ if (!tmp_data)
+ {
+ X509V3err(X509V3_F_PROCESS_PCI_VALUE,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->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) { PROXY_CERT_INFO_EXTENSION_free(pci); pci = NULL; }
+end:
+ sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
+ return pci;
+ }
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