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731 lines
22 KiB
731 lines
22 KiB
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Jacob Hoffman-Andrews,
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* <github@hoffman-andrews.com>
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "curl_setup.h"
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|
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#ifdef USE_RUSTLS
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|
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#include "curl_printf.h"
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|
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#include <errno.h>
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#include <rustls.h>
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|
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#include "inet_pton.h"
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#include "urldata.h"
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#include "sendf.h"
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#include "vtls.h"
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#include "vtls_int.h"
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#include "select.h"
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#include "strerror.h"
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#include "multiif.h"
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#include "connect.h" /* for the connect timeout */
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|
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struct rustls_ssl_backend_data
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{
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const struct rustls_client_config *config;
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struct rustls_connection *conn;
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bool data_pending;
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|
};
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|
|
|
/* For a given rustls_result error code, return the best-matching CURLcode. */
|
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static CURLcode map_error(rustls_result r)
|
|
{
|
|
if(rustls_result_is_cert_error(r)) {
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return CURLE_PEER_FAILED_VERIFICATION;
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|
}
|
|
switch(r) {
|
|
case RUSTLS_RESULT_OK:
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return CURLE_OK;
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|
case RUSTLS_RESULT_NULL_PARAMETER:
|
|
return CURLE_BAD_FUNCTION_ARGUMENT;
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default:
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|
return CURLE_READ_ERROR;
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}
|
|
}
|
|
|
|
static bool
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|
cr_data_pending(struct Curl_cfilter *cf, const struct Curl_easy *data)
|
|
{
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struct ssl_connect_data *ctx = cf->ctx;
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struct rustls_ssl_backend_data *backend;
|
|
|
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(void)data;
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DEBUGASSERT(ctx && ctx->backend);
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backend = (struct rustls_ssl_backend_data *)ctx->backend;
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return backend->data_pending;
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|
}
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|
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struct io_ctx {
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struct Curl_cfilter *cf;
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struct Curl_easy *data;
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};
|
|
|
|
static int
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read_cb(void *userdata, uint8_t *buf, uintptr_t len, uintptr_t *out_n)
|
|
{
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struct io_ctx *io_ctx = userdata;
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CURLcode result;
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int ret = 0;
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ssize_t nread = Curl_conn_cf_recv(io_ctx->cf->next, io_ctx->data,
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(char *)buf, len, &result);
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if(nread < 0) {
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nread = 0;
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if(CURLE_AGAIN == result)
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ret = EAGAIN;
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else
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ret = EINVAL;
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}
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*out_n = (int)nread;
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return ret;
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|
}
|
|
|
|
static int
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|
write_cb(void *userdata, const uint8_t *buf, uintptr_t len, uintptr_t *out_n)
|
|
{
|
|
struct io_ctx *io_ctx = userdata;
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|
CURLcode result;
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|
int ret = 0;
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ssize_t nwritten = Curl_conn_cf_send(io_ctx->cf->next, io_ctx->data,
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(const char *)buf, len, &result);
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|
if(nwritten < 0) {
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nwritten = 0;
|
|
if(CURLE_AGAIN == result)
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ret = EAGAIN;
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else
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ret = EINVAL;
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}
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*out_n = (int)nwritten;
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/*
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CURL_TRC_CFX(io_ctx->data, io_ctx->cf, "cf->next send(len=%zu) -> %zd, %d",
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len, nwritten, result));
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*/
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return ret;
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|
}
|
|
|
|
static ssize_t tls_recv_more(struct Curl_cfilter *cf,
|
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struct Curl_easy *data, CURLcode *err)
|
|
{
|
|
struct ssl_connect_data *const connssl = cf->ctx;
|
|
struct rustls_ssl_backend_data *const backend =
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(struct rustls_ssl_backend_data *)connssl->backend;
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struct io_ctx io_ctx;
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size_t tls_bytes_read = 0;
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rustls_io_result io_error;
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rustls_result rresult = 0;
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|
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io_ctx.cf = cf;
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io_ctx.data = data;
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io_error = rustls_connection_read_tls(backend->conn, read_cb, &io_ctx,
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&tls_bytes_read);
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if(io_error == EAGAIN || io_error == EWOULDBLOCK) {
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*err = CURLE_AGAIN;
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|
return -1;
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|
}
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|
else if(io_error) {
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char buffer[STRERROR_LEN];
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failf(data, "reading from socket: %s",
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Curl_strerror(io_error, buffer, sizeof(buffer)));
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*err = CURLE_READ_ERROR;
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return -1;
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}
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|
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rresult = rustls_connection_process_new_packets(backend->conn);
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|
if(rresult != RUSTLS_RESULT_OK) {
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char errorbuf[255];
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|
size_t errorlen;
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rustls_error(rresult, errorbuf, sizeof(errorbuf), &errorlen);
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failf(data, "rustls_connection_process_new_packets: %.*s",
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(int)errorlen, errorbuf);
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*err = map_error(rresult);
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return -1;
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}
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backend->data_pending = TRUE;
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*err = CURLE_OK;
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return (ssize_t)tls_bytes_read;
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}
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|
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/*
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* On each run:
|
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* - Read a chunk of bytes from the socket into rustls' TLS input buffer.
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* - Tell rustls to process any new packets.
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* - Read out as many plaintext bytes from rustls as possible, until hitting
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* error, EOF, or EAGAIN/EWOULDBLOCK, or plainbuf/plainlen is filled up.
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*
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* It's okay to call this function with plainbuf == NULL and plainlen == 0.
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* In that case, it will copy bytes from the socket into rustls' TLS input
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* buffer, and process packets, but won't consume bytes from rustls' plaintext
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* output buffer.
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*/
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static ssize_t
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cr_recv(struct Curl_cfilter *cf, struct Curl_easy *data,
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char *plainbuf, size_t plainlen, CURLcode *err)
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{
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struct ssl_connect_data *const connssl = cf->ctx;
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struct rustls_ssl_backend_data *const backend =
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(struct rustls_ssl_backend_data *)connssl->backend;
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struct rustls_connection *rconn = NULL;
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size_t n = 0;
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size_t plain_bytes_copied = 0;
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rustls_result rresult = 0;
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ssize_t nread;
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bool eof = FALSE;
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DEBUGASSERT(backend);
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rconn = backend->conn;
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while(plain_bytes_copied < plainlen) {
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if(!backend->data_pending) {
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if(tls_recv_more(cf, data, err) < 0) {
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if(*err != CURLE_AGAIN) {
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nread = -1;
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goto out;
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}
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break;
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}
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}
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rresult = rustls_connection_read(rconn,
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(uint8_t *)plainbuf + plain_bytes_copied,
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plainlen - plain_bytes_copied,
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&n);
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if(rresult == RUSTLS_RESULT_PLAINTEXT_EMPTY) {
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backend->data_pending = FALSE;
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}
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else if(rresult == RUSTLS_RESULT_UNEXPECTED_EOF) {
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failf(data, "rustls: peer closed TCP connection "
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|
"without first closing TLS connection");
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*err = CURLE_READ_ERROR;
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nread = -1;
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goto out;
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}
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else if(rresult != RUSTLS_RESULT_OK) {
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/* n always equals 0 in this case, don't need to check it */
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char errorbuf[255];
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size_t errorlen;
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rustls_error(rresult, errorbuf, sizeof(errorbuf), &errorlen);
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failf(data, "rustls_connection_read: %.*s", (int)errorlen, errorbuf);
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*err = CURLE_READ_ERROR;
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nread = -1;
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goto out;
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}
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else if(n == 0) {
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/* n == 0 indicates clean EOF, but we may have read some other
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plaintext bytes before we reached this. Break out of the loop
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so we can figure out whether to return success or EOF. */
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eof = TRUE;
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break;
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}
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else {
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plain_bytes_copied += n;
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}
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}
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|
|
if(plain_bytes_copied) {
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*err = CURLE_OK;
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nread = (ssize_t)plain_bytes_copied;
|
|
}
|
|
else if(eof) {
|
|
*err = CURLE_OK;
|
|
nread = 0;
|
|
}
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|
else {
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|
*err = CURLE_AGAIN;
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|
nread = -1;
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|
}
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out:
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CURL_TRC_CF(data, cf, "cf_recv(len=%zu) -> %zd, %d",
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plainlen, nread, *err);
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return nread;
|
|
}
|
|
|
|
/*
|
|
* On each call:
|
|
* - Copy `plainlen` bytes into rustls' plaintext input buffer (if > 0).
|
|
* - Fully drain rustls' plaintext output buffer into the socket until
|
|
* we get either an error or EAGAIN/EWOULDBLOCK.
|
|
*
|
|
* It's okay to call this function with plainbuf == NULL and plainlen == 0.
|
|
* In that case, it won't read anything into rustls' plaintext input buffer.
|
|
* It will only drain rustls' plaintext output buffer into the socket.
|
|
*/
|
|
static ssize_t
|
|
cr_send(struct Curl_cfilter *cf, struct Curl_easy *data,
|
|
const void *plainbuf, size_t plainlen, CURLcode *err)
|
|
{
|
|
struct ssl_connect_data *const connssl = cf->ctx;
|
|
struct rustls_ssl_backend_data *const backend =
|
|
(struct rustls_ssl_backend_data *)connssl->backend;
|
|
struct rustls_connection *rconn = NULL;
|
|
struct io_ctx io_ctx;
|
|
size_t plainwritten = 0;
|
|
size_t tlswritten = 0;
|
|
size_t tlswritten_total = 0;
|
|
rustls_result rresult;
|
|
rustls_io_result io_error;
|
|
char errorbuf[256];
|
|
size_t errorlen;
|
|
|
|
DEBUGASSERT(backend);
|
|
rconn = backend->conn;
|
|
|
|
CURL_TRC_CF(data, cf, "cf_send: %ld plain bytes", plainlen);
|
|
|
|
io_ctx.cf = cf;
|
|
io_ctx.data = data;
|
|
|
|
if(plainlen > 0) {
|
|
rresult = rustls_connection_write(rconn, plainbuf, plainlen,
|
|
&plainwritten);
|
|
if(rresult != RUSTLS_RESULT_OK) {
|
|
rustls_error(rresult, errorbuf, sizeof(errorbuf), &errorlen);
|
|
failf(data, "rustls_connection_write: %.*s", (int)errorlen, errorbuf);
|
|
*err = CURLE_WRITE_ERROR;
|
|
return -1;
|
|
}
|
|
else if(plainwritten == 0) {
|
|
failf(data, "rustls_connection_write: EOF");
|
|
*err = CURLE_WRITE_ERROR;
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
while(rustls_connection_wants_write(rconn)) {
|
|
io_error = rustls_connection_write_tls(rconn, write_cb, &io_ctx,
|
|
&tlswritten);
|
|
if(io_error == EAGAIN || io_error == EWOULDBLOCK) {
|
|
CURL_TRC_CF(data, cf, "cf_send: EAGAIN after %zu bytes",
|
|
tlswritten_total);
|
|
*err = CURLE_AGAIN;
|
|
return -1;
|
|
}
|
|
else if(io_error) {
|
|
char buffer[STRERROR_LEN];
|
|
failf(data, "writing to socket: %s",
|
|
Curl_strerror(io_error, buffer, sizeof(buffer)));
|
|
*err = CURLE_WRITE_ERROR;
|
|
return -1;
|
|
}
|
|
if(tlswritten == 0) {
|
|
failf(data, "EOF in swrite");
|
|
*err = CURLE_WRITE_ERROR;
|
|
return -1;
|
|
}
|
|
CURL_TRC_CF(data, cf, "cf_send: wrote %zu TLS bytes", tlswritten);
|
|
tlswritten_total += tlswritten;
|
|
}
|
|
|
|
return plainwritten;
|
|
}
|
|
|
|
/* A server certificate verify callback for rustls that always returns
|
|
RUSTLS_RESULT_OK, or in other words disable certificate verification. */
|
|
static enum rustls_result
|
|
cr_verify_none(void *userdata UNUSED_PARAM,
|
|
const rustls_verify_server_cert_params *params UNUSED_PARAM)
|
|
{
|
|
return RUSTLS_RESULT_OK;
|
|
}
|
|
|
|
static bool
|
|
cr_hostname_is_ip(const char *hostname)
|
|
{
|
|
struct in_addr in;
|
|
#ifdef ENABLE_IPV6
|
|
struct in6_addr in6;
|
|
if(Curl_inet_pton(AF_INET6, hostname, &in6) > 0) {
|
|
return true;
|
|
}
|
|
#endif /* ENABLE_IPV6 */
|
|
if(Curl_inet_pton(AF_INET, hostname, &in) > 0) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static CURLcode
|
|
cr_init_backend(struct Curl_cfilter *cf, struct Curl_easy *data,
|
|
struct rustls_ssl_backend_data *const backend)
|
|
{
|
|
struct ssl_connect_data *connssl = cf->ctx;
|
|
struct ssl_primary_config *conn_config = Curl_ssl_cf_get_primary_config(cf);
|
|
struct rustls_connection *rconn = NULL;
|
|
struct rustls_client_config_builder *config_builder = NULL;
|
|
struct rustls_root_cert_store *roots = NULL;
|
|
const struct curl_blob *ca_info_blob = conn_config->ca_info_blob;
|
|
const char * const ssl_cafile =
|
|
/* CURLOPT_CAINFO_BLOB overrides CURLOPT_CAINFO */
|
|
(ca_info_blob ? NULL : conn_config->CAfile);
|
|
const bool verifypeer = conn_config->verifypeer;
|
|
const char *hostname = connssl->peer.hostname;
|
|
char errorbuf[256];
|
|
size_t errorlen;
|
|
int result;
|
|
|
|
DEBUGASSERT(backend);
|
|
rconn = backend->conn;
|
|
|
|
config_builder = rustls_client_config_builder_new();
|
|
if(connssl->alpn) {
|
|
struct alpn_proto_buf proto;
|
|
rustls_slice_bytes alpn[ALPN_ENTRIES_MAX];
|
|
size_t i;
|
|
|
|
for(i = 0; i < connssl->alpn->count; ++i) {
|
|
alpn[i].data = (const uint8_t *)connssl->alpn->entries[i];
|
|
alpn[i].len = strlen(connssl->alpn->entries[i]);
|
|
}
|
|
rustls_client_config_builder_set_alpn_protocols(config_builder, alpn,
|
|
connssl->alpn->count);
|
|
Curl_alpn_to_proto_str(&proto, connssl->alpn);
|
|
infof(data, VTLS_INFOF_ALPN_OFFER_1STR, proto.data);
|
|
}
|
|
if(!verifypeer) {
|
|
rustls_client_config_builder_dangerous_set_certificate_verifier(
|
|
config_builder, cr_verify_none);
|
|
/* rustls doesn't support IP addresses (as of 0.19.0), and will reject
|
|
* connections created with an IP address, even when certificate
|
|
* verification is turned off. Set a placeholder hostname and disable
|
|
* SNI. */
|
|
if(cr_hostname_is_ip(hostname)) {
|
|
rustls_client_config_builder_set_enable_sni(config_builder, false);
|
|
hostname = "example.invalid";
|
|
}
|
|
}
|
|
else if(ca_info_blob) {
|
|
roots = rustls_root_cert_store_new();
|
|
|
|
/* Enable strict parsing only if verification isn't disabled. */
|
|
result = rustls_root_cert_store_add_pem(roots, ca_info_blob->data,
|
|
ca_info_blob->len, verifypeer);
|
|
if(result != RUSTLS_RESULT_OK) {
|
|
failf(data, "rustls: failed to parse trusted certificates from blob");
|
|
rustls_root_cert_store_free(roots);
|
|
rustls_client_config_free(
|
|
rustls_client_config_builder_build(config_builder));
|
|
return CURLE_SSL_CACERT_BADFILE;
|
|
}
|
|
|
|
result = rustls_client_config_builder_use_roots(config_builder, roots);
|
|
rustls_root_cert_store_free(roots);
|
|
if(result != RUSTLS_RESULT_OK) {
|
|
failf(data, "rustls: failed to load trusted certificates");
|
|
rustls_client_config_free(
|
|
rustls_client_config_builder_build(config_builder));
|
|
return CURLE_SSL_CACERT_BADFILE;
|
|
}
|
|
}
|
|
else if(ssl_cafile) {
|
|
result = rustls_client_config_builder_load_roots_from_file(
|
|
config_builder, ssl_cafile);
|
|
if(result != RUSTLS_RESULT_OK) {
|
|
failf(data, "rustls: failed to load trusted certificates");
|
|
rustls_client_config_free(
|
|
rustls_client_config_builder_build(config_builder));
|
|
return CURLE_SSL_CACERT_BADFILE;
|
|
}
|
|
}
|
|
|
|
backend->config = rustls_client_config_builder_build(config_builder);
|
|
DEBUGASSERT(rconn == NULL);
|
|
{
|
|
/* rustls claims to manage ip address hostnames as well here. So,
|
|
* if we have an SNI, we use it, otherwise we pass the hostname */
|
|
char *server = connssl->peer.sni?
|
|
connssl->peer.sni : connssl->peer.hostname;
|
|
result = rustls_client_connection_new(backend->config, server, &rconn);
|
|
}
|
|
if(result != RUSTLS_RESULT_OK) {
|
|
rustls_error(result, errorbuf, sizeof(errorbuf), &errorlen);
|
|
failf(data, "rustls_client_connection_new: %.*s", (int)errorlen, errorbuf);
|
|
return CURLE_COULDNT_CONNECT;
|
|
}
|
|
rustls_connection_set_userdata(rconn, backend);
|
|
backend->conn = rconn;
|
|
return CURLE_OK;
|
|
}
|
|
|
|
static void
|
|
cr_set_negotiated_alpn(struct Curl_cfilter *cf, struct Curl_easy *data,
|
|
const struct rustls_connection *rconn)
|
|
{
|
|
const uint8_t *protocol = NULL;
|
|
size_t len = 0;
|
|
|
|
rustls_connection_get_alpn_protocol(rconn, &protocol, &len);
|
|
Curl_alpn_set_negotiated(cf, data, protocol, len);
|
|
}
|
|
|
|
/* Given an established network connection, do a TLS handshake.
|
|
*
|
|
* If `blocking` is true, this function will block until the handshake is
|
|
* complete. Otherwise it will return as soon as I/O would block.
|
|
*
|
|
* For the non-blocking I/O case, this function will set `*done` to true
|
|
* once the handshake is complete. This function never reads the value of
|
|
* `*done*`.
|
|
*/
|
|
static CURLcode
|
|
cr_connect_common(struct Curl_cfilter *cf,
|
|
struct Curl_easy *data,
|
|
bool blocking,
|
|
bool *done)
|
|
{
|
|
struct ssl_connect_data *const connssl = cf->ctx;
|
|
curl_socket_t sockfd = Curl_conn_cf_get_socket(cf, data);
|
|
struct rustls_ssl_backend_data *const backend =
|
|
(struct rustls_ssl_backend_data *)connssl->backend;
|
|
struct rustls_connection *rconn = NULL;
|
|
CURLcode tmperr = CURLE_OK;
|
|
int result;
|
|
int what;
|
|
bool wants_read;
|
|
bool wants_write;
|
|
curl_socket_t writefd;
|
|
curl_socket_t readfd;
|
|
timediff_t timeout_ms;
|
|
timediff_t socket_check_timeout;
|
|
|
|
DEBUGASSERT(backend);
|
|
|
|
if(ssl_connection_none == connssl->state) {
|
|
result = cr_init_backend(cf, data,
|
|
(struct rustls_ssl_backend_data *)connssl->backend);
|
|
if(result != CURLE_OK) {
|
|
return result;
|
|
}
|
|
connssl->state = ssl_connection_negotiating;
|
|
}
|
|
|
|
rconn = backend->conn;
|
|
|
|
/* Read/write data until the handshake is done or the socket would block. */
|
|
for(;;) {
|
|
/*
|
|
* Connection has been established according to rustls. Set send/recv
|
|
* handlers, and update the state machine.
|
|
*/
|
|
if(!rustls_connection_is_handshaking(rconn)) {
|
|
infof(data, "Done handshaking");
|
|
/* Done with the handshake. Set up callbacks to send/receive data. */
|
|
connssl->state = ssl_connection_complete;
|
|
|
|
cr_set_negotiated_alpn(cf, data, rconn);
|
|
|
|
*done = TRUE;
|
|
return CURLE_OK;
|
|
}
|
|
|
|
wants_read = rustls_connection_wants_read(rconn);
|
|
wants_write = rustls_connection_wants_write(rconn);
|
|
DEBUGASSERT(wants_read || wants_write);
|
|
writefd = wants_write?sockfd:CURL_SOCKET_BAD;
|
|
readfd = wants_read?sockfd:CURL_SOCKET_BAD;
|
|
|
|
/* check allowed time left */
|
|
timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
|
|
|
if(timeout_ms < 0) {
|
|
/* no need to continue if time already is up */
|
|
failf(data, "rustls: operation timed out before socket check");
|
|
return CURLE_OPERATION_TIMEDOUT;
|
|
}
|
|
|
|
socket_check_timeout = blocking?timeout_ms:0;
|
|
|
|
what = Curl_socket_check(
|
|
readfd, CURL_SOCKET_BAD, writefd, socket_check_timeout);
|
|
if(what < 0) {
|
|
/* fatal error */
|
|
failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
|
|
return CURLE_SSL_CONNECT_ERROR;
|
|
}
|
|
if(blocking && 0 == what) {
|
|
failf(data, "rustls connection timeout after %"
|
|
CURL_FORMAT_TIMEDIFF_T " ms", socket_check_timeout);
|
|
return CURLE_OPERATION_TIMEDOUT;
|
|
}
|
|
if(0 == what) {
|
|
infof(data, "Curl_socket_check: %s would block",
|
|
wants_read&&wants_write ? "writing and reading" :
|
|
wants_write ? "writing" : "reading");
|
|
*done = FALSE;
|
|
return CURLE_OK;
|
|
}
|
|
/* socket is readable or writable */
|
|
|
|
if(wants_write) {
|
|
infof(data, "rustls_connection wants us to write_tls.");
|
|
cr_send(cf, data, NULL, 0, &tmperr);
|
|
if(tmperr == CURLE_AGAIN) {
|
|
infof(data, "writing would block");
|
|
/* fall through */
|
|
}
|
|
else if(tmperr != CURLE_OK) {
|
|
return tmperr;
|
|
}
|
|
}
|
|
|
|
if(wants_read) {
|
|
infof(data, "rustls_connection wants us to read_tls.");
|
|
|
|
if(tls_recv_more(cf, data, &tmperr) < 0) {
|
|
if(tmperr == CURLE_AGAIN) {
|
|
infof(data, "reading would block");
|
|
/* fall through */
|
|
}
|
|
else if(tmperr == CURLE_READ_ERROR) {
|
|
return CURLE_SSL_CONNECT_ERROR;
|
|
}
|
|
else {
|
|
return tmperr;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* We should never fall through the loop. We should return either because
|
|
the handshake is done or because we can't read/write without blocking. */
|
|
DEBUGASSERT(false);
|
|
}
|
|
|
|
static CURLcode
|
|
cr_connect_nonblocking(struct Curl_cfilter *cf,
|
|
struct Curl_easy *data, bool *done)
|
|
{
|
|
return cr_connect_common(cf, data, false, done);
|
|
}
|
|
|
|
static CURLcode
|
|
cr_connect_blocking(struct Curl_cfilter *cf UNUSED_PARAM,
|
|
struct Curl_easy *data UNUSED_PARAM)
|
|
{
|
|
bool done; /* unused */
|
|
return cr_connect_common(cf, data, true, &done);
|
|
}
|
|
|
|
static void cr_adjust_pollset(struct Curl_cfilter *cf,
|
|
struct Curl_easy *data,
|
|
struct easy_pollset *ps)
|
|
{
|
|
if(!cf->connected) {
|
|
curl_socket_t sock = Curl_conn_cf_get_socket(cf->next, data);
|
|
struct ssl_connect_data *const connssl = cf->ctx;
|
|
struct rustls_ssl_backend_data *const backend =
|
|
(struct rustls_ssl_backend_data *)connssl->backend;
|
|
struct rustls_connection *rconn = NULL;
|
|
|
|
(void)data;
|
|
DEBUGASSERT(backend);
|
|
rconn = backend->conn;
|
|
|
|
if(rustls_connection_wants_write(rconn)) {
|
|
Curl_pollset_add_out(data, ps, sock);
|
|
}
|
|
if(rustls_connection_wants_read(rconn)) {
|
|
Curl_pollset_add_in(data, ps, sock);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void *
|
|
cr_get_internals(struct ssl_connect_data *connssl,
|
|
CURLINFO info UNUSED_PARAM)
|
|
{
|
|
struct rustls_ssl_backend_data *backend =
|
|
(struct rustls_ssl_backend_data *)connssl->backend;
|
|
DEBUGASSERT(backend);
|
|
return &backend->conn;
|
|
}
|
|
|
|
static void
|
|
cr_close(struct Curl_cfilter *cf, struct Curl_easy *data)
|
|
{
|
|
struct ssl_connect_data *connssl = cf->ctx;
|
|
struct rustls_ssl_backend_data *backend =
|
|
(struct rustls_ssl_backend_data *)connssl->backend;
|
|
CURLcode tmperr = CURLE_OK;
|
|
ssize_t n = 0;
|
|
|
|
DEBUGASSERT(backend);
|
|
|
|
if(backend->conn) {
|
|
rustls_connection_send_close_notify(backend->conn);
|
|
n = cr_send(cf, data, NULL, 0, &tmperr);
|
|
if(n < 0) {
|
|
failf(data, "rustls: error sending close_notify: %d", tmperr);
|
|
}
|
|
|
|
rustls_connection_free(backend->conn);
|
|
backend->conn = NULL;
|
|
}
|
|
if(backend->config) {
|
|
rustls_client_config_free(backend->config);
|
|
backend->config = NULL;
|
|
}
|
|
}
|
|
|
|
static size_t cr_version(char *buffer, size_t size)
|
|
{
|
|
struct rustls_str ver = rustls_version();
|
|
return msnprintf(buffer, size, "%.*s", (int)ver.len, ver.data);
|
|
}
|
|
|
|
const struct Curl_ssl Curl_ssl_rustls = {
|
|
{ CURLSSLBACKEND_RUSTLS, "rustls" },
|
|
SSLSUPP_CAINFO_BLOB | /* supports */
|
|
SSLSUPP_TLS13_CIPHERSUITES |
|
|
SSLSUPP_HTTPS_PROXY,
|
|
sizeof(struct rustls_ssl_backend_data),
|
|
|
|
Curl_none_init, /* init */
|
|
Curl_none_cleanup, /* cleanup */
|
|
cr_version, /* version */
|
|
Curl_none_check_cxn, /* check_cxn */
|
|
Curl_none_shutdown, /* shutdown */
|
|
cr_data_pending, /* data_pending */
|
|
Curl_none_random, /* random */
|
|
Curl_none_cert_status_request, /* cert_status_request */
|
|
cr_connect_blocking, /* connect */
|
|
cr_connect_nonblocking, /* connect_nonblocking */
|
|
cr_adjust_pollset, /* adjust_pollset */
|
|
cr_get_internals, /* get_internals */
|
|
cr_close, /* close_one */
|
|
Curl_none_close_all, /* close_all */
|
|
Curl_none_session_free, /* session_free */
|
|
Curl_none_set_engine, /* set_engine */
|
|
Curl_none_set_engine_default, /* set_engine_default */
|
|
Curl_none_engines_list, /* engines_list */
|
|
Curl_none_false_start, /* false_start */
|
|
NULL, /* sha256sum */
|
|
NULL, /* associate_connection */
|
|
NULL, /* disassociate_connection */
|
|
NULL, /* free_multi_ssl_backend_data */
|
|
cr_recv, /* recv decrypted data */
|
|
cr_send, /* send data to encrypt */
|
|
};
|
|
|
|
#endif /* USE_RUSTLS */
|