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openssl/util/quicserver.c

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/*
* Copyright 2023 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/*
* This is a temporary test server for QUIC. It will eventually be replaced
* by s_server and removed once we have full QUIC server support.
*/
#include <stdio.h>
#include <openssl/bio.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include "internal/e_os.h"
#include "internal/sockets.h"
#include "internal/quic_tserver.h"
#include "internal/quic_stream_map.h"
#include "internal/time.h"
static BIO *bio_err = NULL;
static void wait_for_activity(QUIC_TSERVER *qtserv)
{
fd_set readfds, writefds;
fd_set *readfdsp = NULL, *writefdsp = NULL;
struct timeval timeout, *timeoutp = NULL;
int width;
int sock;
BIO *bio = ossl_quic_tserver_get0_rbio(qtserv);
OSSL_TIME deadline;
BIO_get_fd(bio, &sock);
if (ossl_quic_tserver_get_net_read_desired(qtserv)) {
readfdsp = &readfds;
FD_ZERO(readfdsp);
openssl_fdset(sock, readfdsp);
}
if (ossl_quic_tserver_get_net_write_desired(qtserv)) {
writefdsp = &writefds;
FD_ZERO(writefdsp);
openssl_fdset(sock, writefdsp);
}
deadline = ossl_quic_tserver_get_deadline(qtserv);
if (!ossl_time_is_infinite(deadline)) {
timeout = ossl_time_to_timeval(ossl_time_subtract(deadline,
ossl_time_now()));
timeoutp = &timeout;
}
width = sock + 1;
if (readfdsp == NULL && writefdsp == NULL && timeoutp == NULL)
return;
select(width, readfdsp, writefdsp, NULL, timeoutp);
}
/* Helper function to create a BIO connected to the server */
static BIO *create_dgram_bio(int family, const char *hostname, const char *port)
{
int sock = -1;
BIO_ADDRINFO *res;
const BIO_ADDRINFO *ai = NULL;
BIO *bio;
if (BIO_sock_init() != 1)
return NULL;
/*
* Lookup IP address info for the server.
*/
if (!BIO_lookup_ex(hostname, port, BIO_LOOKUP_SERVER, family, SOCK_DGRAM,
0, &res))
return NULL;
/*
* Loop through all the possible addresses for the server and find one
* we can create and start listening on
*/
for (ai = res; ai != NULL; ai = BIO_ADDRINFO_next(ai)) {
/* Create the UDP socket */
sock = BIO_socket(BIO_ADDRINFO_family(ai), SOCK_DGRAM, 0, 0);
if (sock == -1)
continue;
/* Start listening on the socket */
if (!BIO_listen(sock, BIO_ADDRINFO_address(ai), 0)) {
BIO_closesocket(sock);
continue;
}
/* Set to non-blocking mode */
if (!BIO_socket_nbio(sock, 1)) {
BIO_closesocket(sock);
continue;
}
break; /* stop searching if we found an addr */
}
/* Free the address information resources we allocated earlier */
BIO_ADDRINFO_free(res);
/* If we didn't bind any sockets, fail */
if (ai == NULL)
return NULL;
/* Create a BIO to wrap the socket */
bio = BIO_new(BIO_s_datagram());
if (bio == NULL) {
BIO_closesocket(sock);
return NULL;
}
/*
* Associate the newly created BIO with the underlying socket. By
* passing BIO_CLOSE here the socket will be automatically closed when
* the BIO is freed. Alternatively you can use BIO_NOCLOSE, in which
* case you must close the socket explicitly when it is no longer
* needed.
*/
BIO_set_fd(bio, sock, BIO_CLOSE);
return bio;
}
static void usage(void)
{
BIO_printf(bio_err, "quicserver [-6][-trace] hostname port certfile keyfile\n");
}
int main(int argc, char *argv[])
{
QUIC_TSERVER_ARGS tserver_args = {0};
QUIC_TSERVER *qtserv = NULL;
int ipv6 = 0, trace = 0;
int argnext = 1;
BIO *bio = NULL;
char *hostname, *port, *certfile, *keyfile;
int ret = EXIT_FAILURE;
unsigned char reqbuf[1024];
size_t numbytes, reqbytes = 0;
const char reqterm[] = {
'\r', '\n', '\r', '\n'
};
const char *response[] = {
"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n<!DOCTYPE html>\n<html>\n<body>Hello world</body>\n</html>\n",
"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n<!DOCTYPE html>\n<html>\n<body>Hello again</body>\n</html>\n",
"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n<!DOCTYPE html>\n<html>\n<body>Another response</body>\n</html>\n",
"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n<!DOCTYPE html>\n<html>\n<body>A message</body>\n</html>\n",
};
unsigned char alpn[] = { 8, 'h', 't', 't', 'p', '/', '1', '.', '0' };
int first = 1;
uint64_t streamid;
size_t respnum = 0;
bio_err = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT);
if (argc == 0 || bio_err == NULL)
goto end2;
while (argnext < argc) {
if (argv[argnext][0] != '-')
break;
if (strcmp(argv[argnext], "-6") == 0) {
ipv6 = 1;
} else if(strcmp(argv[argnext], "-trace") == 0) {
trace = 1;
} else {
BIO_printf(bio_err, "Unrecognised argument %s\n", argv[argnext]);
usage();
goto end2;
}
argnext++;
}
if (argc - argnext != 4) {
usage();
goto end2;
}
hostname = argv[argnext++];
port = argv[argnext++];
certfile = argv[argnext++];
keyfile = argv[argnext++];
bio = create_dgram_bio(ipv6 ? AF_INET6 : AF_INET, hostname, port);
if (bio == NULL || !BIO_up_ref(bio)) {
BIO_printf(bio_err, "Unable to create server socket\n");
goto end2;
}
tserver_args.libctx = NULL;
tserver_args.net_rbio = bio;
tserver_args.net_wbio = bio;
tserver_args.alpn = alpn;
tserver_args.alpnlen = sizeof(alpn);
tserver_args.ctx = NULL;
qtserv = ossl_quic_tserver_new(&tserver_args, certfile, keyfile);
if (qtserv == NULL) {
BIO_printf(bio_err, "Failed to create the QUIC_TSERVER\n");
goto end;
}
BIO_printf(bio_err, "Starting quicserver\n");
BIO_printf(bio_err,
"Note that this utility will be removed in a future OpenSSL version.\n");
BIO_printf(bio_err,
"For test purposes only. Not for use in a production environment.\n");
/* Ownership of the BIO is passed to qtserv */
bio = NULL;
if (trace)
#ifndef OPENSSL_NO_SSL_TRACE
ossl_quic_tserver_set_msg_callback(qtserv, SSL_trace, bio_err);
#else
BIO_printf(bio_err,
"Warning: -trace specified but no SSL tracing support present\n");
#endif
/* Wait for handshake to complete */
ossl_quic_tserver_tick(qtserv);
while(!ossl_quic_tserver_is_handshake_confirmed(qtserv)) {
wait_for_activity(qtserv);
ossl_quic_tserver_tick(qtserv);
if (ossl_quic_tserver_is_terminated(qtserv)) {
BIO_printf(bio_err, "Failed waiting for handshake completion\n");
ret = EXIT_FAILURE;
goto end;
}
}
for (;; respnum++) {
if (respnum >= OSSL_NELEM(response))
goto end;
/* Wait for an incoming stream */
do {
streamid = ossl_quic_tserver_pop_incoming_stream(qtserv);
if (streamid == UINT64_MAX)
wait_for_activity(qtserv);
ossl_quic_tserver_tick(qtserv);
if (ossl_quic_tserver_is_terminated(qtserv)) {
/* Assume we finished everything the clients wants from us */
ret = EXIT_SUCCESS;
goto end;
}
} while(streamid == UINT64_MAX);
/* Read the request */
do {
if (first)
first = 0;
else
wait_for_activity(qtserv);
ossl_quic_tserver_tick(qtserv);
if (ossl_quic_tserver_is_terminated(qtserv)) {
BIO_printf(bio_err, "Failed reading request\n");
ret = EXIT_FAILURE;
goto end;
}
if (ossl_quic_tserver_read(qtserv, streamid, reqbuf + reqbytes,
sizeof(reqbuf) - reqbytes,
&numbytes)) {
if (numbytes > 0)
fwrite(reqbuf + reqbytes, 1, numbytes, stdout);
reqbytes += numbytes;
}
} while (reqbytes < sizeof(reqterm)
|| memcmp(reqbuf + reqbytes - sizeof(reqterm), reqterm,
sizeof(reqterm)) != 0);
if ((streamid & QUIC_STREAM_DIR_UNI) != 0) {
/*
* Incoming stream was uni-directional. Create a server initiated
* uni-directional stream for the response.
*/
if (!ossl_quic_tserver_stream_new(qtserv, 1, &streamid)) {
BIO_printf(bio_err, "Failed creating response stream\n");
goto end;
}
}
/* Send the response */
ossl_quic_tserver_tick(qtserv);
if (!ossl_quic_tserver_write(qtserv, streamid,
(unsigned char *)response[respnum],
strlen(response[respnum]), &numbytes))
goto end;
if (!ossl_quic_tserver_conclude(qtserv, streamid))
goto end;
}
end:
/* Free twice because we did an up-ref */
BIO_free(bio);
end2:
BIO_free(bio);
ossl_quic_tserver_free(qtserv);
BIO_free(bio_err);
return ret;
}
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