crypto/cmp/cmp_http.c

   1 /*
   2  * Copyright 2007-2020 The OpenSSL Project Authors. All Rights Reserved.
   3  * Copyright Nokia 2007-2019
   4  * Copyright Siemens AG 2015-2019
   5  *
   6  * Licensed under the Apache License 2.0 (the "License").  You may not use
   7  * this file except in compliance with the License.  You can obtain a copy
   8  * in the file LICENSE in the source distribution or at
   9  * https://www.openssl.org/source/license.html
  10  */
  11
  12 #include <string.h>
  13 #include <stdio.h>
  14
  15 #include <openssl/asn1t.h>
  16 #include <openssl/http.h>
  17 #include "internal/sockets.h"
  18
  19 #include "openssl/cmp.h"
  20 #include "cmp_local.h"
  21
  22 /* explicit #includes not strictly needed since implied by the above: */
  23 #include <ctype.h>
  24 #include <fcntl.h>
  25 #include <stdlib.h>
  26 #include <openssl/bio.h>
  27 #include <openssl/buffer.h>
  28 #include <openssl/cmp.h>
  29 #include <openssl/err.h>
  30
  31 DEFINE_STACK_OF(CONF_VALUE)
  32
  33 /*
  34  * Send the PKIMessage req and on success return the response, else NULL.
  35  * Any previous error queue entries will likely be removed by ERR_clear_error().
  36  */
  37 OSSL_CMP_MSG *OSSL_CMP_MSG_http_perform(OSSL_CMP_CTX *ctx,
  38                                         const OSSL_CMP_MSG *req)
  39 {
  40     char server_port[32] = { '\0' };
  41     STACK_OF(CONF_VALUE) *headers = NULL;
  42     const char *const content_type_pkix = "application/pkixcmp";
  43     int tls_used;
  44     OSSL_CMP_MSG *res;
  45
  46     if (ctx == NULL || req == NULL) {
  47         CMPerr(0, CMP_R_NULL_ARGUMENT);
  48         return NULL;
  49     }
  50
  51     if (!X509V3_add_value("Pragma", "no-cache", &headers))
  52         return NULL;
  53
  54     if (ctx->serverPort != 0)
  55         BIO_snprintf(server_port, sizeof(server_port), "%d", ctx->serverPort);
  56
  57     tls_used = OSSL_CMP_CTX_get_http_cb_arg(ctx) != NULL;
  58     ossl_cmp_log2(DEBUG, ctx, "connecting to CMP server %s%s",
  59                   ctx->server, tls_used ? " using TLS" : "");
  60     res = (OSSL_CMP_MSG *)
  61         OSSL_HTTP_post_asn1(ctx->server, server_port, ctx->serverPath,
  62                             tls_used, ctx->proxy, ctx->no_proxy, NULL, NULL,
  63                             ctx->http_cb, OSSL_CMP_CTX_get_http_cb_arg(ctx),
  64                             headers, content_type_pkix, (const ASN1_VALUE *)req,
  65                             ASN1_ITEM_rptr(OSSL_CMP_MSG),
  66                             0, 0, ctx->msg_timeout, content_type_pkix,
  67                             ASN1_ITEM_rptr(OSSL_CMP_MSG));
  68     ossl_cmp_debug(ctx, "disconnected from CMP server");
  69     sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
  70     return res;
  71 }