Files
GmSSL/tools/tls13_client.c
2026-02-27 11:02:22 +08:00

249 lines
6.5 KiB
C

/*
* 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/tls.h>
#include <gmssl/error.h>
static int client_ciphers[] = { TLS_cipher_sm4_gcm_sm3 };
static const char *http_get =
"GET / HTTP/1.1\r\n"
"Hostname: aaa\r\n"
"\r\n\r\n";
static const char *options = "-host str [-port num] [-cacert file] [-cert file -key file -pass str]";
static const char *help =
"Options\n"
"\n"
" -host str Server's hostname\n"
" -port num Server's port number, default 443\n"
" -cacert file Root CA certificate\n"
" -cert file Client's certificate chain in PEM format\n"
" -key file Client's encrypted private key in PEM format\n"
" -pass str Password to decrypt private key\n"
"\n"
"Examples\n"
"\n"
" gmssl sm2keygen -pass 1234 -out rootcakey.pem\n"
" gmssl certgen -C CN -ST Beijing -L Haidian -O PKU -OU CS -CN ROOTCA -days 3650 \\\n"
" -key rootcakey.pem -pass 1234 -out rootcacert.pem \\\n"
" -key_usage keyCertSign -key_usage cRLSign -ca\n"
"\n"
" gmssl sm2keygen -pass 1234 -out cakey.pem\n"
" gmssl reqgen -C CN -ST Beijing -L Haidian -O PKU -OU CS -CN \"Sub CA\" \\\n"
" -key cakey.pem -pass 1234 -out careq.pem\n"
" gmssl reqsign -in careq.pem -days 365 -key_usage keyCertSign -cacert rootcacert.pem -key rootcakey.pem -pass 1234 \\\n"
" -out cacert.pem -ca -path_len_constraint 0\n"
"\n"
" gmssl sm2keygen -pass 1234 -out signkey.pem\n"
" gmssl reqgen -C CN -ST Beijing -L Haidian -O PKU -OU CS -CN localhost -key signkey.pem -pass 1234 -out signreq.pem\n"
" gmssl reqsign -in signreq.pem -days 365 -key_usage digitalSignature -cacert cacert.pem -key cakey.pem -pass 1234 -out signcert.pem\n"
"\n"
" cat signcert.pem > certs.pem\n"
" cat cacert.pem >> certs.pem\n"
"\n"
" sudo gmssl tls13_server -port 4430 -cert certs.pem -key signkey.pem -pass 1234\n"
" gmssl tls13_client -host 127.0.0.1 -port 4430 -cacert rootcacert.pem\n"
"\n";
int tls13_client_main(int argc, char *argv[])
{
int ret = -1;
char *prog = argv[0];
char *host = NULL;
int port = 443;
char *cacertfile = NULL;
char *certfile = NULL;
char *keyfile = NULL;
char *pass = NULL;
struct hostent *hp;
struct sockaddr_in server;
tls_socket_t sock = -1;
TLS_CTX ctx;
TLS_CONNECT conn;
char buf[1024] = {0};
size_t len = sizeof(buf);
char send_buf[1024] = {0};
argc--;
argv++;
if (argc < 1) {
fprintf(stderr, "usage: %s %s\n", prog, options);
return 1;
}
while (argc >= 1) {
if (!strcmp(*argv, "-help")) {
printf("usage: %s %s\n", prog, options);
printf("%s\n", help);
return 0;
} else if (!strcmp(*argv, "-host")) {
if (--argc < 1) goto bad;
host = *(++argv);
} else if (!strcmp(*argv, "-port")) {
if (--argc < 1) goto bad;
port = atoi(*(++argv));
} else if (!strcmp(*argv, "-cacert")) {
if (--argc < 1) goto bad;
cacertfile = *(++argv);
} else if (!strcmp(*argv, "-cert")) {
if (--argc < 1) goto bad;
certfile = *(++argv);
} else if (!strcmp(*argv, "-key")) {
if (--argc < 1) goto bad;
keyfile = *(++argv);
} else if (!strcmp(*argv, "-pass")) {
if (--argc < 1) goto bad;
pass = *(++argv);
} else {
fprintf(stderr, "%s: invalid option '%s'\n", prog, *argv);
return 1;
bad:
fprintf(stderr, "%s: option '%s' argument required\n", prog, *argv);
return 0;
}
argc--;
argv++;
}
if (!host) {
fprintf(stderr, "%s: '-in' option required\n", prog);
return -1;
}
if (tls_socket_lib_init() != 1) {
error_print();
return -1;
}
if (!(hp = gethostbyname(host))) {
//herror("tls13_client: '-host' invalid");
goto end;
}
memset(&ctx, 0, sizeof(ctx));
memset(&conn, 0, sizeof(conn));
server.sin_addr = *((struct in_addr *)hp->h_addr_list[0]);
server.sin_family = AF_INET;
server.sin_port = htons(port);
if (tls_socket_create(&sock, AF_INET, SOCK_STREAM, 0) != 1) {
fprintf(stderr, "%s: socket create error\n", prog);
goto end;
}
if (tls_socket_connect(sock, &server) != 1) {
fprintf(stderr, "%s: socket connect error\n", prog);
goto end;
}
if (tls_ctx_init(&ctx, TLS_protocol_tls13, TLS_client_mode) != 1
|| tls_ctx_set_cipher_suites(&ctx, client_ciphers, sizeof(client_ciphers)/sizeof(client_ciphers[0])) != 1) {
fprintf(stderr, "%s: context init error\n", prog);
goto end;
}
if (cacertfile) {
if (tls_ctx_set_ca_certificates(&ctx, cacertfile, TLS_DEFAULT_VERIFY_DEPTH) != 1) {
fprintf(stderr, "%s: context init error\n", prog);
goto end;
}
}
if (certfile) {
if (tls_ctx_set_certificate_and_key(&ctx, certfile, keyfile, pass) != 1) {
fprintf(stderr, "%s: context init error\n", prog);
goto end;
}
}
if (tls_init(&conn, &ctx) != 1
|| tls_set_socket(&conn, sock) != 1
|| tls_do_handshake(&conn) != 1) {
fprintf(stderr, "%s: error\n", prog);
goto end;
}
for (;;) {
fd_set fds;
size_t sentlen;
if (!fgets(send_buf, sizeof(send_buf), stdin)) {
if (feof(stdin)) {
tls_shutdown(&conn);
goto end;
} else {
continue;
}
}
if (tls13_send(&conn, (uint8_t *)send_buf, strlen(send_buf), &sentlen) != 1) {
fprintf(stderr, "%s: send error\n", prog);
goto end;
}
FD_ZERO(&fds);
FD_SET(conn.sock, &fds);
#ifdef WIN32
#else
FD_SET(fileno(stdin), &fds);
#endif
if (select((int)(conn.sock + 1), // In WinSock2, select() ignore the this arg
&fds, NULL, NULL, NULL) < 0) {
fprintf(stderr, "%s: select failed\n", prog);
goto end;
}
if (FD_ISSET(conn.sock, &fds)) {
for (;;) {
memset(buf, 0, sizeof(buf));
if (tls13_recv(&conn, (uint8_t *)buf, sizeof(buf), &len) != 1) {
goto end;
}
fwrite(buf, 1, len, stdout);
fflush(stdout);
// FIXME: change tls13_recv API
if (conn.datalen == 0) {
break;
}
}
}
#ifdef WIN32
#else
if (FD_ISSET(fileno(stdin), &fds)) {
memset(send_buf, 0, sizeof(send_buf));
if (!fgets(send_buf, sizeof(send_buf), stdin)) {
if (feof(stdin)) {
tls_shutdown(&conn);
goto end;
} else {
continue;
}
}
if (tls13_send(&conn, (uint8_t *)send_buf, strlen(send_buf), &sentlen) != 1) {
fprintf(stderr, "%s: send error\n", prog);
goto end;
}
}
#endif
}
end:
if (sock != -1) tls_socket_close(sock);
tls_ctx_cleanup(&ctx);
tls_cleanup(&conn);
return 0;
}