v3_pci.c
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上传日期:2020-08-09
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- /* 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鰃skolan
- * (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: %sn", 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_ALREADTY_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_ALREADTY_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) 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] = ' ';
- }
- }
- 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] = ' ';
- }
- 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] = ' ';
- }
- }
- 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 = 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;
- }