mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-22 16:07:30 +00:00
329 lines
8.8 KiB
C
329 lines
8.8 KiB
C
/* 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);
|
|
|
|
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;
|
|
}
|