2001-01-04 01:46:36 +00:00
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/* ocsp_ht.c */
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/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
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* project 2000.
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*/
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/* ====================================================================
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* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <openssl/asn1.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <openssl/ocsp.h>
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#include <openssl/err.h>
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#include <openssl/buffer.h>
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2002-11-13 16:11:14 +00:00
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#ifdef OPENSSL_SYS_SUNOS
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#define strtoul (unsigned long)strtol
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#endif /* OPENSSL_SYS_SUNOS */
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2001-01-04 01:46:36 +00:00
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/* Quick and dirty HTTP OCSP request handler.
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* Could make this a bit cleverer by adding
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* support for non blocking BIOs and a few
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* other refinements.
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*/
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OCSP_RESPONSE *OCSP_sendreq_bio(BIO *b, char *path, OCSP_REQUEST *req)
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{
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BIO *mem = NULL;
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char tmpbuf[1024];
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OCSP_RESPONSE *resp = NULL;
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char *p, *q, *r;
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int len, retcode;
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static char req_txt[] =
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"POST %s HTTP/1.0\r\n\
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2001-01-11 23:24:28 +00:00
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Content-Type: application/ocsp-request\r\n\
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Content-Length: %d\r\n\r\n";
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2001-01-04 01:46:36 +00:00
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len = i2d_OCSP_REQUEST(req, NULL);
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if(BIO_printf(b, req_txt, path, len) < 0) {
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OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_WRITE_ERROR);
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goto err;
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}
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if(i2d_OCSP_REQUEST_bio(b, req) <= 0) {
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OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_WRITE_ERROR);
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goto err;
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}
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if(!(mem = BIO_new(BIO_s_mem()))) goto err;
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/* Copy response to a memory BIO: socket bios can't do gets! */
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2002-11-13 15:43:43 +00:00
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while ((len = BIO_read(b, tmpbuf, sizeof tmpbuf))) {
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2001-01-04 01:46:36 +00:00
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if(len < 0) {
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OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_READ_ERROR);
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goto err;
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}
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BIO_write(mem, tmpbuf, len);
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}
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if(BIO_gets(mem, tmpbuf, 512) <= 0) {
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OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
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goto err;
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}
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/* Parse the HTTP response. This will look like this:
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* "HTTP/1.0 200 OK". We need to obtain the numeric code and
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* informational message.
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*/
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/* Skip to first white space (passed protocol info) */
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2001-01-12 14:45:12 +00:00
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for(p = tmpbuf; *p && !isspace((unsigned char)*p); p++) continue;
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2001-01-04 01:46:36 +00:00
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if(!*p) {
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OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
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goto err;
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}
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/* Skip past white space to start of response code */
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2001-01-12 14:45:12 +00:00
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while(*p && isspace((unsigned char)*p)) p++;
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2001-01-04 01:46:36 +00:00
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if(!*p) {
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OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
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goto err;
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}
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/* Find end of response code: first whitespace after start of code */
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2001-01-12 14:45:12 +00:00
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for(q = p; *q && !isspace((unsigned char)*q); q++) continue;
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2001-01-04 01:46:36 +00:00
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if(!*q) {
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OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
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goto err;
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}
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/* Set end of response code and start of message */
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*q++ = 0;
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/* Attempt to parse numeric code */
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retcode = strtoul(p, &r, 10);
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if(*r) goto err;
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/* Skip over any leading white space in message */
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2001-01-12 14:45:12 +00:00
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while(*q && isspace((unsigned char)*q)) q++;
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2001-01-04 01:46:36 +00:00
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if(!*q) goto err;
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/* Finally zap any trailing white space in message (include CRLF) */
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/* We know q has a non white space character so this is OK */
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2001-01-12 14:45:12 +00:00
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for(r = q + strlen(q) - 1; isspace((unsigned char)*r); r--) *r = 0;
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2001-01-04 01:46:36 +00:00
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if(retcode != 200) {
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OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_RESPONSE_ERROR);
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ERR_add_error_data(4, "Code=", p, ",Reason=", q);
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goto err;
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}
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/* Find blank line marking beginning of content */
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while(BIO_gets(mem, tmpbuf, 512) > 0)
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{
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2001-01-12 14:45:12 +00:00
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for(p = tmpbuf; *p && isspace((unsigned char)*p); p++) continue;
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2001-01-04 01:46:36 +00:00
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if(!*p) break;
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}
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if(*p) {
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OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_NO_CONTENT);
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goto err;
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}
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if(!(resp = d2i_OCSP_RESPONSE_bio(mem, NULL))) {
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OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,ERR_R_NESTED_ASN1_ERROR);
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goto err;
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}
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err:
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BIO_free(mem);
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return resp;
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}
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