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GmSSL/tools/tls12_server.c
Zhi Guan c56d7edfab Update TLS -verbose options
2026-06-12 14:23:56 +08:00

478 lines
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/*
* Copyright 2014-2026 The GmSSL Project. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <gmssl/mem.h>
#include <gmssl/sm2.h>
#include <gmssl/tls.h>
#include <gmssl/error.h>
static const char *options = "[-port num] -cert pem -key pem -pass str [-cacert pem] [-verbose]";
static const char *help =
"Options\n"
"\n"
" -port num Listening port number, default 443\n"
" -cipher_suite str Supported cipher suites, may appear multiple times, higher priority first\n"
" -supported_group str Supported elliptic curves, may appear multiple times, higher priority first\n"
" -sig_alg str Supported signature algorithms\n"
" -cert pem Server's certificate chain in PEM format\n"
" -key pem Server's encrypted private key in PEM format\n"
" -pass str Password to decrypt private key\n"
" -cert_request Client certificate request\n"
" -cacert pem CA certificate for client certificate verification\n"
" -verify_depth num Certificate verification depth\n"
" -client_cert_optional Allow client send empty Certificate\n"
" -renegotiation_info Send renegotiation_info response when client supports RFC 5746\n"
" -verbose Print TLS handshake messages\n"
"\n"
#include "tls12_help.h"
"\n";
static int set_socket_nonblocking(tls_socket_t sock)
{
#ifdef WIN32
u_long mode = 1;
if (ioctlsocket(sock, FIONBIO, &mode) != 0) {
error_print();
return -1;
}
#else
int flags;
if ((flags = fcntl(sock, F_GETFL)) < 0
|| fcntl(sock, F_SETFL, flags | O_NONBLOCK) < 0) {
error_print();
return -1;
}
#endif
return 1;
}
static int do_handshake_select(TLS_CONNECT *conn)
{
int ret;
fd_set rfds;
fd_set wfds;
for (;;) {
ret = tls_do_handshake(conn);
if (ret == 1) {
return 1;
}
FD_ZERO(&rfds);
FD_ZERO(&wfds);
if (ret == TLS_ERROR_RECV_AGAIN) {
FD_SET(conn->sock, &rfds);
} else if (ret == TLS_ERROR_SEND_AGAIN) {
FD_SET(conn->sock, &wfds);
} else {
error_print();
return -1;
}
if (select((int)(conn->sock + 1), &rfds, &wfds, NULL, NULL) < 0) {
error_print();
return -1;
}
}
}
static int do_shutdown_select(TLS_CONNECT *conn)
{
int ret;
fd_set rfds;
fd_set wfds;
for (;;) {
ret = tls_shutdown(conn);
if (ret == 1) {
return 1;
}
FD_ZERO(&rfds);
FD_ZERO(&wfds);
if (ret == TLS_ERROR_RECV_AGAIN) {
FD_SET(conn->sock, &rfds);
} else if (ret == TLS_ERROR_SEND_AGAIN) {
FD_SET(conn->sock, &wfds);
} else {
error_print();
return -1;
}
if (select((int)(conn->sock + 1), &rfds, &wfds, NULL, NULL) < 0) {
error_print();
return -1;
}
}
}
static int do_send_select(TLS_CONNECT *conn, const uint8_t *buf, size_t len)
{
int ret;
size_t offset = 0;
fd_set rfds;
fd_set wfds;
while (offset < len) {
size_t sentlen = 0;
ret = tls_send(conn, buf + offset, len - offset, &sentlen);
if (ret == 1) {
offset += sentlen;
continue;
}
FD_ZERO(&rfds);
FD_ZERO(&wfds);
if (ret == TLS_ERROR_RECV_AGAIN) {
FD_SET(conn->sock, &rfds);
} else if (ret == TLS_ERROR_SEND_AGAIN) {
FD_SET(conn->sock, &wfds);
} else {
error_print();
return -1;
}
if (select((int)(conn->sock + 1), &rfds, &wfds, NULL, NULL) < 0) {
error_print();
return -1;
}
}
return 1;
}
int tls12_server_main(int argc , char **argv)
{
int ret = 1;
char *prog = argv[0];
int port = 443;
int cipher_suites[4];
size_t cipher_suites_cnt = 0;
int supported_groups[4];
size_t supported_groups_cnt = 0;
int sig_algs[4];
size_t sig_algs_cnt = 0;
char *certfiles[4];
size_t certfiles_cnt = 0;
char *keyfiles[sizeof(certfiles)/sizeof(certfiles[0])];
size_t keyfiles_cnt = 0;
char *passes[sizeof(certfiles)/sizeof(certfiles[0])];
size_t passes_cnt = 0;
int cert_request = 0;
char *cacertfile = NULL;
int verify_depth = TLS_DEFAULT_VERIFY_DEPTH;
int client_cert_optional = 0;
int renegotiation_info = 0;
int verbose = 0;
TLS_CTX ctx;
TLS_CONNECT conn;
char buf[1600] = {0};
size_t len = sizeof(buf);
tls_socket_t sock;
tls_socket_t conn_sock;
struct sockaddr_in server_addr;
struct sockaddr_in client_addr;
size_t i;
argc--;
argv++;
if (argc < 1) {
fprintf(stderr, "usage: %s %s\n", prog, options);
return 1;
}
while (argc > 0) {
if (!strcmp(*argv, "-help")) {
printf("usage: %s %s\n", prog, options);
printf("%s\n", help);
return 0;
} else if (!strcmp(*argv, "-port")) {
if (--argc < 1) goto bad;
port = atoi(*(++argv));
} else if (!strcmp(*argv, "-cipher_suite")) {
char *cipher_suite_name;
int cipher_suite;
if (cipher_suites_cnt >= sizeof(cipher_suites)/sizeof(cipher_suites[0])) {
fprintf(stderr, "%s: too many -cipher_suite options\n", prog);
return -1;
}
if (--argc < 1) goto bad;
cipher_suite_name = *(++argv);
if ((cipher_suite = tls_cipher_suite_from_name(cipher_suite_name)) == 0) {
fprintf(stderr, "%s: invalid -cipher_suite '%s' value\n", prog, cipher_suite_name);
return -1;
}
cipher_suites[cipher_suites_cnt] = cipher_suite;
cipher_suites_cnt++;
} else if (!strcmp(*argv, "-supported_group")) {
char *supported_group_name;
int supported_group;
if (supported_groups_cnt >= sizeof(supported_groups)/sizeof(supported_groups[0])) {
fprintf(stderr, "%s: too many -supported_group options\n", prog);
return -1;
}
if (--argc < 1) goto bad;
supported_group_name = *(++argv);
if ((supported_group = tls_named_curve_from_name(supported_group_name)) == 0) {
fprintf(stderr, "%s: -supported_group '%s' not supported\n", prog, supported_group_name);
return -1;
}
supported_groups[supported_groups_cnt++] = supported_group;
} else if (!strcmp(*argv, "-sig_alg")) {
char *sig_alg_name;
int sig_alg;
if (sig_algs_cnt >= sizeof(sig_algs)/sizeof(sig_algs[0])) {
fprintf(stderr, "%s: too many -sig_alg options\n", prog);
return -1;
}
if (--argc < 1) goto bad;
sig_alg_name = *(++argv);
if ((sig_alg = tls_signature_scheme_from_name(sig_alg_name)) == 0) {
fprintf(stderr, "%s: -sig_alg '%s' not supported\n", prog, sig_alg_name);
return -1;
}
sig_algs[sig_algs_cnt++] = sig_alg;
} else if (!strcmp(*argv, "-cert")) {
if (certfiles_cnt >= sizeof(certfiles)/sizeof(certfiles[0])) {
fprintf(stderr, "%s: too many -cert options\n", prog);
return -1;
}
if (--argc < 1) goto bad;
certfiles[certfiles_cnt++] = *(++argv);
} else if (!strcmp(*argv, "-key")) {
if (keyfiles_cnt >= sizeof(keyfiles)/sizeof(keyfiles[0])) {
fprintf(stderr, "%s: too many -key options\n", prog);
return -1;
}
if (--argc < 1) goto bad;
keyfiles[keyfiles_cnt++] = *(++argv);
} else if (!strcmp(*argv, "-pass")) {
if (passes_cnt >= sizeof(passes)/sizeof(passes[0])) {
fprintf(stderr, "%s: too many -pass options\n", prog);
return -1;
}
if (--argc < 1) goto bad;
passes[passes_cnt++] = *(++argv);
} else if (!strcmp(*argv, "-cert_request")) {
cert_request = 1;
} else if (!strcmp(*argv, "-cacert")) {
if (--argc < 1) goto bad;
cacertfile = *(++argv);
} else if (!strcmp(*argv, "-verify_depth")) {
if (--argc < 1) goto bad;
verify_depth = atoi(*(++argv));
if (verify_depth < 1) {
fprintf(stderr, "%s: invalid -verify_depth value '%d'\n", prog, verify_depth);
return -1;
}
} else if (!strcmp(*argv, "-client_cert_optional")) {
client_cert_optional = 1;
} else if (!strcmp(*argv, "-renegotiation_info")) {
renegotiation_info = 1;
} else if (!strcmp(*argv, "-verbose")) {
verbose = 1;
} else {
fprintf(stderr, "%s: invalid option '%s'\n", prog, *argv);
return 1;
bad:
fprintf(stderr, "%s: option '%s' argument required\n", prog, *argv);
return 1;
}
argc--;
argv++;
}
if (!certfiles_cnt) {
fprintf(stderr, "%s: '-cert' option required\n", prog);
return 1;
}
if (!keyfiles_cnt) {
fprintf(stderr, "%s: '-key' option required\n", prog);
return 1;
}
if (!passes_cnt) {
fprintf(stderr, "%s: '-pass' option required\n", prog);
return 1;
}
if (certfiles_cnt != keyfiles_cnt || keyfiles_cnt != passes_cnt) {
error_print();
return -1;
}
if (tls_socket_lib_init() != 1) {
error_print();
return -1;
}
if (tls_ctx_init(&ctx, TLS_protocol_tls12, TLS_server_mode) != 1) {
error_print();
return -1;
}
if (verbose && tls_ctx_set_verbose(&ctx, verbose) != 1) {
error_print();
goto end;
}
if (tls_ctx_set_cipher_suites(&ctx, cipher_suites, cipher_suites_cnt) != 1) {
fprintf(stderr, "%s: context init error\n", prog);
goto end;
}
// supported_groups
if (supported_groups_cnt > 0) {
if (tls_ctx_set_supported_groups(&ctx, supported_groups, supported_groups_cnt) != 1) {
error_print();
goto end;
}
}
// signature_algorithms
if (sig_algs_cnt > 0) {
if (tls_ctx_set_signature_algorithms(&ctx, sig_algs, sig_algs_cnt) != 1) {
error_print();
goto end;
}
}
if (renegotiation_info) {
if (tls12_ctx_set_renegotiation_info(&ctx, 1) != 1) {
error_print();
goto end;
}
}
// Certificate
for (i = 0; i < certfiles_cnt; i++) {
if (tls_ctx_add_certificate_chain_and_key(&ctx, certfiles[i], keyfiles[i], passes[i]) != 1) {
error_print();
goto end;;
}
}
// CertificateRequest
if (cert_request) {
if (!cacertfile) {
fprintf(stderr, "%s: -cacert required by -cert_request\n", prog);
goto end;
}
if (tls_ctx_set_ca_certificates(&ctx, cacertfile, verify_depth) != 1) {
error_print();
goto end;
}
if (tls_ctx_enable_certificate_request(&ctx, 1) != 1) {
error_print();
goto end;
}
if (client_cert_optional) {
if (tls13_ctx_enable_client_certificate_optional(&ctx, 1) != 1) {
error_print();
goto end;
}
}
}
if (tls_socket_create(&sock, AF_INET, SOCK_STREAM, 0) != 1) {
fprintf(stderr, "%s: create socket error\n", prog);
goto end;
}
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = INADDR_ANY;
server_addr.sin_port = htons(port);
if (tls_socket_bind(sock, &server_addr) != 1) {
fprintf(stderr, "%s: socket bind error\n", prog);
goto end;
}
puts("start listen ...\n");
tls_socket_listen(sock, 1);
restart:
//client_addrlen = sizeof(client_addr);
if (tls_socket_accept(sock, &client_addr, &conn_sock) != 1) {
fprintf(stderr, "%s: socket accept error\n", prog);
goto end;
}
puts("socket connected\n");
if (tls_init(&conn, &ctx) != 1) {
error_print();
goto end;
}
if (tls_set_socket(&conn, conn_sock) != 1) {
error_print();
goto end;
}
if (set_socket_nonblocking(conn_sock) != 1) {
error_print();
goto end;
}
if (do_handshake_select(&conn) != 1) {
error_print();
goto end;
}
for (;;) {
int rv;
fd_set fds;
do {
FD_ZERO(&fds);
FD_SET(conn.sock, &fds);
if (select((int)(conn.sock + 1), &fds, NULL, NULL, NULL) < 0) {
fprintf(stderr, "%s: select failed\n", prog);
goto end;
}
len = sizeof(buf);
if ((rv = tls_recv(&conn, (uint8_t *)buf, sizeof(buf), &len)) != 1) {
if (rv == -EAGAIN
|| rv == TLS_ERROR_RECV_AGAIN
|| rv == TLS_ERROR_SEND_AGAIN) {
continue;
}
if (rv < 0) {
fprintf(stderr, "%s: recv failure\n", prog);
} else {
if (do_shutdown_select(&conn) != 1) {
fprintf(stderr, "%s: shutdown failure\n", prog);
}
fprintf(stderr, "%s: Disconnected by remote\n", prog);
}
//tls_socket_close(conn.sock); // FIXME:
tls_cleanup(&conn);
goto restart;
}
} while (!len);
if (do_send_select(&conn, (uint8_t *)buf, len) != 1) {
fprintf(stderr, "%s: send failure, close connection\n", prog);
tls_socket_close(conn.sock);
goto end;
}
}
end:
return ret;
}
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