crypto/openssl-0.9.7e/crypto/ocsp/ocsp_ht.c

   1 /* ocsp_ht.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project 2000.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #include <openssl/asn1.h>
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <ctype.h>
  63 #include <string.h>
  64 #include <openssl/ocsp.h>
  65 #include <openssl/err.h>
  66 #include <openssl/buffer.h>
  67 #ifdef OPENSSL_SYS_SUNOS
  68 #define strtoul (unsigned long)strtol
  69 #endif /* OPENSSL_SYS_SUNOS */
  70
  71 /* Quick and dirty HTTP OCSP request handler.
  72  * Could make this a bit cleverer by adding
  73  * support for non blocking BIOs and a few
  74  * other refinements.
  75  */
  76
  77 OCSP_RESPONSE *OCSP_sendreq_bio(BIO *b, char *path, OCSP_REQUEST *req)
  78 {
  79         BIO *mem = NULL;
  80         char tmpbuf[1024];
  81         OCSP_RESPONSE *resp = NULL;
  82         char *p, *q, *r;
  83         int len, retcode;
  84         static char req_txt[] =
  85 "POST %s HTTP/1.0\r\n\
  86 Content-Type: application/ocsp-request\r\n\
  87 Content-Length: %d\r\n\r\n";
  88
  89         len = i2d_OCSP_REQUEST(req, NULL);
  90         if(BIO_printf(b, req_txt, path, len) < 0) {
  91                 OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_WRITE_ERROR);
  92                 goto err;
  93         }
  94         if(i2d_OCSP_REQUEST_bio(b, req) <= 0) {
  95                 OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_WRITE_ERROR);
  96                 goto err;
  97         }
  98         if(!(mem = BIO_new(BIO_s_mem()))) goto err;
  99         /* Copy response to a memory BIO: socket bios can't do gets! */
 100         while ((len = BIO_read(b, tmpbuf, sizeof tmpbuf))) {
 101                 if(len < 0) {
 102                         OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_READ_ERROR);
 103                         goto err;
 104                 }
 105                 BIO_write(mem, tmpbuf, len);
 106         }
 107         if(BIO_gets(mem, tmpbuf, 512) <= 0) {
 108                 OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
 109                 goto err;
 110         }
 111         /* Parse the HTTP response. This will look like this:
 112          * "HTTP/1.0 200 OK". We need to obtain the numeric code and
 113          * (optional) informational message.
 114          */
 115
 116         /* Skip to first white space (passed protocol info) */
 117         for(p = tmpbuf; *p && !isspace((unsigned char)*p); p++) continue;
 118         if(!*p) {
 119                 OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
 120                 goto err;
 121         }
 122         /* Skip past white space to start of response code */
 123         while(*p && isspace((unsigned char)*p)) p++;
 124         if(!*p) {
 125                 OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
 126                 goto err;
 127         }
 128         /* Find end of response code: first whitespace after start of code */
 129         for(q = p; *q && !isspace((unsigned char)*q); q++) continue;
 130         if(!*q) {
 131                 OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
 132                 goto err;
 133         }
 134         /* Set end of response code and start of message */
 135         *q++ = 0;
 136         /* Attempt to parse numeric code */
 137         retcode = strtoul(p, &r, 10);
 138         if(*r) goto err;
 139         /* Skip over any leading white space in message */
 140         while(*q && isspace((unsigned char)*q))  q++;
 141         if(*q) {
 142         /* Finally zap any trailing white space in message (include CRLF) */
 143         /* We know q has a non white space character so this is OK */
 144                 for(r = q + strlen(q) - 1; isspace((unsigned char)*r); r--) *r = 0;
 145         }
 146         if(retcode != 200) {
 147                 OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_SERVER_RESPONSE_ERROR);
 148                 if(!*q) {
 149                         ERR_add_error_data(2, "Code=", p);
 150                 }
 151                 else {
 152                         ERR_add_error_data(4, "Code=", p, ",Reason=", q);
 153                 }
 154                 goto err;
 155         }
 156         /* Find blank line marking beginning of content */
 157         while(BIO_gets(mem, tmpbuf, 512) > 0)
 158         {
 159                 for(p = tmpbuf; *p && isspace((unsigned char)*p); p++) continue;
 160                 if(!*p) break;
 161         }
 162         if(*p) {
 163                 OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,OCSP_R_NO_CONTENT);
 164                 goto err;
 165         }
 166         if(!(resp = d2i_OCSP_RESPONSE_bio(mem, NULL))) {
 167                 OCSPerr(OCSP_F_OCSP_SENDREQ_BIO,ERR_R_NESTED_ASN1_ERROR);
 168                 goto err;
 169         }
 170         err:
 171         BIO_free(mem);
 172         return resp;
 173 }