| 1 | /*
|
|---|
| 2 | * Copyright 2007-2022 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/err.h>
|
|---|
| 29 |
|
|---|
| 30 | static int keep_alive(int keep_alive, int body_type)
|
|---|
| 31 | {
|
|---|
| 32 | if (keep_alive != 0
|
|---|
| 33 | /*
|
|---|
| 34 | * Ask for persistent connection only if may need more round trips.
|
|---|
| 35 | * Do so even with disableConfirm because polling might be needed.
|
|---|
| 36 | */
|
|---|
| 37 | && body_type != OSSL_CMP_PKIBODY_IR
|
|---|
| 38 | && body_type != OSSL_CMP_PKIBODY_CR
|
|---|
| 39 | && body_type != OSSL_CMP_PKIBODY_P10CR
|
|---|
| 40 | && body_type != OSSL_CMP_PKIBODY_KUR
|
|---|
| 41 | && body_type != OSSL_CMP_PKIBODY_POLLREQ)
|
|---|
| 42 | keep_alive = 0;
|
|---|
| 43 | return keep_alive;
|
|---|
| 44 | }
|
|---|
| 45 |
|
|---|
| 46 | /*
|
|---|
| 47 | * Send the PKIMessage req and on success return the response, else NULL.
|
|---|
| 48 | * Any previous error queue entries will likely be removed by ERR_clear_error().
|
|---|
| 49 | */
|
|---|
| 50 | OSSL_CMP_MSG *OSSL_CMP_MSG_http_perform(OSSL_CMP_CTX *ctx,
|
|---|
| 51 | const OSSL_CMP_MSG *req)
|
|---|
| 52 | {
|
|---|
| 53 | char server_port[32] = { '\0' };
|
|---|
| 54 | STACK_OF(CONF_VALUE) *headers = NULL;
|
|---|
| 55 | const char content_type_pkix[] = "application/pkixcmp";
|
|---|
| 56 | int tls_used;
|
|---|
| 57 | const ASN1_ITEM *it = ASN1_ITEM_rptr(OSSL_CMP_MSG);
|
|---|
| 58 | BIO *req_mem, *rsp;
|
|---|
| 59 | OSSL_CMP_MSG *res = NULL;
|
|---|
| 60 |
|
|---|
| 61 | if (ctx == NULL || req == NULL) {
|
|---|
| 62 | ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
|
|---|
| 63 | return NULL;
|
|---|
| 64 | }
|
|---|
| 65 |
|
|---|
| 66 | if (!X509V3_add_value("Pragma", "no-cache", &headers))
|
|---|
| 67 | return NULL;
|
|---|
| 68 | if ((req_mem = ASN1_item_i2d_mem_bio(it, (const ASN1_VALUE *)req)) == NULL)
|
|---|
| 69 | goto err;
|
|---|
| 70 |
|
|---|
| 71 | if (ctx->serverPort != 0)
|
|---|
| 72 | BIO_snprintf(server_port, sizeof(server_port), "%d", ctx->serverPort);
|
|---|
| 73 | tls_used = OSSL_CMP_CTX_get_http_cb_arg(ctx) != NULL;
|
|---|
| 74 | if (ctx->http_ctx == NULL)
|
|---|
| 75 | ossl_cmp_log3(DEBUG, ctx, "connecting to CMP server %s:%s%s",
|
|---|
| 76 | ctx->server, server_port, tls_used ? " using TLS" : "");
|
|---|
| 77 |
|
|---|
| 78 | rsp = OSSL_HTTP_transfer(&ctx->http_ctx, ctx->server, server_port,
|
|---|
| 79 | ctx->serverPath, tls_used,
|
|---|
| 80 | ctx->proxy, ctx->no_proxy,
|
|---|
| 81 | NULL /* bio */, NULL /* rbio */,
|
|---|
| 82 | ctx->http_cb, OSSL_CMP_CTX_get_http_cb_arg(ctx),
|
|---|
| 83 | 0 /* buf_size */, headers,
|
|---|
| 84 | content_type_pkix, req_mem,
|
|---|
| 85 | content_type_pkix, 1 /* expect_asn1 */,
|
|---|
| 86 | OSSL_HTTP_DEFAULT_MAX_RESP_LEN,
|
|---|
| 87 | ctx->msg_timeout,
|
|---|
| 88 | keep_alive(ctx->keep_alive, req->body->type));
|
|---|
| 89 | BIO_free(req_mem);
|
|---|
| 90 | res = (OSSL_CMP_MSG *)ASN1_item_d2i_bio(it, rsp, NULL);
|
|---|
| 91 | BIO_free(rsp);
|
|---|
| 92 |
|
|---|
| 93 | if (ctx->http_ctx == NULL)
|
|---|
| 94 | ossl_cmp_debug(ctx, "disconnected from CMP server");
|
|---|
| 95 | /*
|
|---|
| 96 | * Note that on normal successful end of the transaction the connection
|
|---|
| 97 | * is not closed at this level, but this will be done by the CMP client
|
|---|
| 98 | * application via OSSL_CMP_CTX_free() or OSSL_CMP_CTX_reinit().
|
|---|
| 99 | */
|
|---|
| 100 | if (res != NULL)
|
|---|
| 101 | ossl_cmp_debug(ctx, "finished reading response from CMP server");
|
|---|
| 102 | err:
|
|---|
| 103 | sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
|
|---|
| 104 | return res;
|
|---|
| 105 | }
|
|---|
