Merge pull request #381 from tamasan238/session-ticket
add session-tickets and resumptionpull/386/head
TakayukiMatsuo
GitHub
commit
1dc3eaf2be
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@ -0,0 +1,43 @@
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# TLS Examples Makefile
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CC = gcc
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LIB_PATH = /usr/local
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CFLAGS = -Wall -I$(LIB_PATH)/include
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LIBS = -L$(LIB_PATH)/lib -lm
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# option variables
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DYN_LIB = -lwolfssl
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STATIC_LIB = $(LIB_PATH)/lib/libwolfssl.a
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DEBUG_FLAGS = -g -DDEBUG
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DEBUG_INC_PATHS = -MD
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OPTIMIZE = -Os
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# Options
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#CFLAGS+=$(DEBUG_FLAGS)
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CFLAGS+=$(OPTIMIZE)
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#LIBS+=$(STATIC_LIB)
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LIBS+=$(DYN_LIB)
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# build targets
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SRC=$(wildcard *.c)
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TARGETS=$(patsubst %.c, %, $(SRC))
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all: $(TARGETS)
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debug: CFLAGS+=$(DEBUG_FLAGS)
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debug: all
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# add the -pthread flag to any threaded examples
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%-threaded: CFLAGS+=-pthread
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%-writedup: CFLAGS+=-pthread
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memory-tls: CFLAGS+=-pthread
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# compile tcp examples without the LIBS variable
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%-tcp: LIBS=
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# build template
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%: %.c
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$(CC) -o $@ $< $(CFLAGS) $(LIBS)
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clean:
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rm -f $(TARGETS)
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rm -f session.bin
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@ -0,0 +1,71 @@
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# wolfSSL TLS with Some Options Example
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This example implements a simple echo client and server that uses TLS with some options.
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## Building
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You need to have wolfSSL installed on your computer prior to building.
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To compile these programs use `make` in this directory.
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## Running
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### Session Tickets and Resumption
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Here is an example of suspending a session once started and resuming the session later.
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1. Establish the first session with `client-tls-session`.
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This program outputs a session ticket as a binary file.
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2. Resume a previously interrupted session with `client-tls-resume`.
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#### Make session ticket
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On one console run the server, this should be executed first or the handshake will fail.
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You can use them as a server:
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- TLS 1.2: ../tls/server-tls
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- TLS 1.3: ../tls/server-tls13
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These are in different directories, so you need to use `make` again.
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```sh
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cd ../tls && make
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./server-tls13
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```
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Then in another terminal run the client:
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```sh
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./client-tls-session
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```
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You will be able to send a message from client to server.
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Sending "break" as a message to the server will generate "session.bin"
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#### Resume
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You can resume earlier session by doing:
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```sh
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./client-tls-resume
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```
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"session.bin" is referenced as a session ticket.
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If it doesn't exist or is invalid, this program will start a new session.
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You will be able to send a message from client to server.
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Sending "break" as a message to the server will break the session.
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If you use TLS 1.3 server, You can resume many times.
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## Cleaning Up
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You can remove executable files by doing:
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```sh
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make clean
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```
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@ -0,0 +1,280 @@
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/* client-tls-resume.c
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*
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* Copyright (C) 2006-2023 wolfSSL Inc.
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*
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* This file is part of wolfSSL. (formerly known as CyaSSL)
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/* the usual suspects */
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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/* socket includes */
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <unistd.h>
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/* wolfSSL */
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#include <wolfssl/options.h>
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#include <wolfssl/ssl.h>
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#define CERT_FILE "../certs/client-cert.pem"
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#define KEY_FILE "../certs/client-key.pem"
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#define CA_CERT_FILE "../certs/ca-cert.pem"
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#define LOCALHOST "127.0.0.1"
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#define DEFAULT_PORT 11111
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#define SAVED_SESS "session.bin"
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#define MSG_SIZE 256
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/* Print SSL error message */
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static void print_SSL_error(const char* msg, SSL* ssl)
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{
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int err;
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if (ssl != NULL) {
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err = wolfSSL_get_error(ssl, 0);
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fprintf(stderr, "ERROR: %s (err %d, %s)\n", msg, err,
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ERR_error_string(err, NULL));
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}
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else {
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fprintf(stderr, "ERROR: %s \n", msg);
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}
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}
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/* read a session from the file if exists */
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static int read_SESS(const char* file, SSL* ssl)
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{
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FILE* fp = NULL;
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unsigned char* buff = NULL;
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const unsigned char* p = NULL;
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size_t sz;
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WOLFSSL_SESSION* sess = NULL;
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int ret = WOLFSSL_FAILURE;
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if (((fp = fopen(file, "rb")) == NULL) ||
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(fseek(fp, 0, SEEK_END) != 0) ||
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((sz = ftell(fp)) == -1)) {
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fprintf(stderr, "ERROR : failed file %s operation \n", file);
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goto cleanup;
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}
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rewind(fp);
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if ((buff = (unsigned char*)malloc(sz)) == NULL ||
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(fread(buff, 1, sz, fp) != sz)) {
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fprintf(stderr, "ERROR : failed reading file\n");
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goto cleanup;
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}
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printf("%s size = %ld\n", SAVED_SESS, sz);
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p = buff;
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if((sess = wolfSSL_d2i_SSL_SESSION(NULL, (const unsigned char**)&p, sz)) == NULL) {
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print_SSL_error("wolfSSL_d2i_SSL_SESSION", NULL);
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}
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if(sess != NULL && (ret = wolfSSL_set_session(ssl, sess) != WOLFSSL_SUCCESS)) {
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print_SSL_error("failed SSL session", ssl);
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} else {
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printf("Resuming session\n");
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ret = WOLFSSL_SUCCESS;
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}
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cleanup:
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if (sess)
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wolfSSL_SESSION_free(sess);
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if (fp)
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fclose(fp);
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if (buff)
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free(buff);
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return ret;
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}
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int main(int argc, char **argv)
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{
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struct sockaddr_in servAddr;
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int sockfd = -1;
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char *ipadd = LOCALHOST;
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char *ca_cert = CA_CERT_FILE;
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int port = DEFAULT_PORT;
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static const char kHttpGetMsg[] = "GET /index.html HTTP/1.0\r\n\r\n";
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struct hostent *host;
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char msg[MSG_SIZE];
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int ret = WOLFSSL_FAILURE;
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(void)ipadd;
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/* SSL objects */
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WOLFSSL_CTX* ctx = NULL;
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WOLFSSL* ssl = NULL;
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memset(&servAddr, 0, sizeof(servAddr));
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/* Check for proper calling convention */
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if (argc == 1)
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fprintf(stderr, "Send to localhost(%s)\n", LOCALHOST);
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if (argc >=2) {
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host = gethostbyname(argv[1]);
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memcpy(&servAddr.sin_addr, host->h_addr_list[0], host->h_length);
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}
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if (argc >= 3)
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ca_cert = argv[2];
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if (argc == 4)
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port = atoi(argv[3]);
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if (argc >= 5) {
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fprintf(stderr, "ERROR: Too many arguments.\n");
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goto cleanup;
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}
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/* Initialize library */
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if (wolfSSL_library_init() != WOLFSSL_SUCCESS) {
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fprintf(stderr, "ERROR: failed to initialize the library\n");
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goto cleanup;
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}
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/* Create and initialize an SSL context object*/
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if ((ctx = wolfSSL_CTX_new(SSLv23_client_method())) == NULL) {
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fprintf(stderr, "ERROR: failed to create an SSL context object\n");
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goto cleanup;
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}
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/* Load client certificate into WOLFwolfSSL_CTX */
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if ((ret = wolfSSL_CTX_use_certificate_file(ctx, CERT_FILE,
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WOLFSSL_FILETYPE_PEM)) != WOLFSSL_SUCCESS) {
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fprintf(stderr, "ERROR: failed to load %s, please check the file.\n",
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CERT_FILE);
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goto cleanup;
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}
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/* Load client key into WOLFwolfSSL_CTX */
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if ((ret = wolfSSL_CTX_use_PrivateKey_file(ctx, KEY_FILE,
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WOLFSSL_FILETYPE_PEM)) != WOLFSSL_SUCCESS) {
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fprintf(stderr, "ERROR: failed to load %s, please check the file.\n",
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KEY_FILE);
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goto cleanup;
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}
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/* Load CA certificate to the context */
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if ((ret = wolfSSL_CTX_load_verify_locations(ctx, ca_cert, NULL))
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!= WOLFSSL_SUCCESS) {
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fprintf(stderr, "ERROR: failed to load %s \n", ca_cert);
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goto cleanup;
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}
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/*
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* Set up a TCP Socket and connect to the server
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*/
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if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
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fprintf(stderr, "ERROR: failed to create a socket. errno %d\n", errno);
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goto cleanup;
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}
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servAddr.sin_family = AF_INET; /* using IPv4 */
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servAddr.sin_port = htons(port); /* on DEFAULT_PORT */
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if ((ret = connect(sockfd, (struct sockaddr *)&servAddr, sizeof(servAddr)))
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== -1) {
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fprintf(stderr, "ERROR: failed to connect. errno %d\n", errno);
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goto cleanup;
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}
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/* Create an SSL object */
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if ((ssl = wolfSSL_new(ctx)) == NULL) {
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fprintf(stderr, "ERROR: failed to create an SSL object\n");
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goto cleanup;
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}
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/* read a seesion from file */
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if ((ret = read_SESS(SAVED_SESS, ssl)) != WOLFSSL_SUCCESS) {
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fprintf(stderr, "ERROR: failed to read session information\n");
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goto cleanup;
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}
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/* Attach the socket to the SSL */
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if ((ret = wolfSSL_set_fd(ssl, sockfd)) != WOLFSSL_SUCCESS) {
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fprintf(stderr, "ERROR: Failed to set the file descriptor\n");
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goto cleanup;
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}
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/* SSL connect to the server */
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if ((ret = wolfSSL_connect(ssl)) != WOLFSSL_SUCCESS) {
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print_SSL_error("failed SSL connect", ssl);
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goto cleanup;
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}
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/* check if session is resued */
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if (wolfSSL_session_reused(ssl) == 1) {
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printf("Session is reused\n");
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}
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else {
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printf("Session is not reused. New session was negotiated.\n");
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}
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/*
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* Application messaging
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*/
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while (1) {
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printf("Message to send: ");
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if(fgets(msg, sizeof(msg), stdin) <= 0)
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break;
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if (strcmp(msg, "\n") == 0){ /* if empty send HTTP request */
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strncpy(msg, kHttpGetMsg, sizeof(msg));
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} else
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msg[strnlen(msg, sizeof(msg))-1] = '\0';
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/* send a message to the server */
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if ((ret = wolfSSL_write(ssl, msg, strnlen(msg, sizeof(msg)))) < 0) {
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print_SSL_error("failed SSL write", ssl);
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break;
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}
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/*
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* closing the session, and write session information into a file
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* before writing session information, the file is removed if exists
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*/
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if (strcmp(msg, "break") == 0) {
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printf("Sending break command\n");
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ret = WOLFSSL_SUCCESS;
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break;
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}
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/* receive a message from the server */
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if ((ret = wolfSSL_read(ssl, msg, sizeof(msg) - 1)) < 0) {
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print_SSL_error("failed SSL read", ssl);
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break;
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}
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msg[ret] = '\0';
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printf("Received: %s\n", msg);
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}
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/* Cleanup and return */
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cleanup:
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if (ssl != NULL) {
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wolfSSL_shutdown(ssl);
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wolfSSL_free(ssl);
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}
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if (sockfd != -1)
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close(sockfd);
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if (ctx != NULL)
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wolfSSL_CTX_free(ctx);
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if (ret != WOLFSSL_SUCCESS)
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ret = WOLFSSL_FAILURE;
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printf("End of TLS Client\n");
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return ret;
|
||||
}
|
||||
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@ -0,0 +1,257 @@
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/* client-tls-session.c
|
||||
*
|
||||
* Copyright (C) 2006-2023 wolfSSL Inc.
|
||||
*
|
||||
* This file is part of wolfSSL. (formerly known as CyaSSL)
|
||||
*
|
||||
* wolfSSL is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* wolfSSL is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
||||
*/
|
||||
|
||||
/* the usual suspects */
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
/* socket includes */
|
||||
#include <sys/socket.h>
|
||||
#include <arpa/inet.h>
|
||||
#include <netinet/in.h>
|
||||
#include <unistd.h>
|
||||
|
||||
/* wolfSSL */
|
||||
#include <wolfssl/options.h>
|
||||
#include <wolfssl/ssl.h>
|
||||
|
||||
#define CERT_FILE "../certs/client-cert.pem"
|
||||
#define KEY_FILE "../certs/client-key.pem"
|
||||
#define CA_CERT_FILE "../certs/ca-cert.pem"
|
||||
#define LOCALHOST "127.0.0.1"
|
||||
#define DEFAULT_PORT 11111
|
||||
#define SAVED_SESS "session.bin"
|
||||
|
||||
#define MSG_SIZE 256
|
||||
|
||||
/* Print SSL error message */
|
||||
static void print_SSL_error(const char* msg, SSL* ssl)
|
||||
{
|
||||
int err;
|
||||
|
||||
if (ssl != NULL) {
|
||||
err = wolfSSL_get_error(ssl, 0);
|
||||
fprintf(stderr, "ERROR: %s (err %d, %s)\n", msg, err,
|
||||
ERR_error_string(err, NULL));
|
||||
}
|
||||
else {
|
||||
fprintf(stderr, "ERROR: %s \n", msg);
|
||||
}
|
||||
}
|
||||
|
||||
/* write a session to the file */
|
||||
static int write_SESS(WOLFSSL_SESSION* sess, const char* file)
|
||||
{
|
||||
FILE* fp = NULL;
|
||||
unsigned char* buff = NULL;
|
||||
size_t sz;
|
||||
int ret = WOLFSSL_FAILURE;
|
||||
|
||||
if ((fp = fopen(file, "wb")) == NULL) {
|
||||
fprintf(stderr, "ERROR : file %s does't exists\n", file);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
if ((sz = wolfSSL_i2d_SSL_SESSION(sess, &buff)) <= 0){
|
||||
print_SSL_error("wolfSSL_i2d_SSL_SESSION", NULL);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
if ((fwrite(buff, 1, sz, fp)) != sz) {
|
||||
fprintf(stderr, "ERROR : failed fwrite\n");
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
cleanup:
|
||||
if (fp)
|
||||
fclose(fp);
|
||||
if (buff)
|
||||
free(buff);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
struct sockaddr_in servAddr;
|
||||
int sockfd = -1;
|
||||
char *ipadd = LOCALHOST;
|
||||
char *ca_cert = CA_CERT_FILE;
|
||||
int port = DEFAULT_PORT;
|
||||
static const char kHttpGetMsg[] = "GET /index.html HTTP/1.0\r\n\r\n";
|
||||
struct hostent *host;
|
||||
|
||||
char msg[MSG_SIZE];
|
||||
int ret = WOLFSSL_FAILURE;
|
||||
|
||||
(void)ipadd;
|
||||
|
||||
/* SSL objects */
|
||||
WOLFSSL_CTX* ctx = NULL;
|
||||
WOLFSSL* ssl = NULL;
|
||||
|
||||
memset(&servAddr, 0, sizeof(servAddr));
|
||||
|
||||
/* SSL SESSION object */
|
||||
WOLFSSL_SESSION* session= NULL;
|
||||
|
||||
/* Check for proper calling convention */
|
||||
if (argc == 1)
|
||||
fprintf(stderr, "Send to localhost(%s)\n", LOCALHOST);
|
||||
if (argc >=2) {
|
||||
host = gethostbyname(argv[1]);
|
||||
memcpy(&servAddr.sin_addr, host->h_addr_list[0], host->h_length);
|
||||
}
|
||||
if (argc >= 3)
|
||||
ca_cert = argv[2];
|
||||
if (argc == 4)
|
||||
port = atoi(argv[3]);
|
||||
if (argc >= 5) {
|
||||
fprintf(stderr, "ERROR: Too many arguments.\n");
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Initialize library */
|
||||
if (wolfSSL_library_init() != WOLFSSL_SUCCESS) {
|
||||
fprintf(stderr, "ERROR: failed to initialize the library\n");
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Create and initialize an SSL context object*/
|
||||
if ((ctx = wolfSSL_CTX_new(SSLv23_client_method())) == NULL) {
|
||||
fprintf(stderr, "ERROR: failed to create an SSL context object\n");
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Load client certificate into WOLFSSL_CTX */
|
||||
if ((ret = wolfSSL_CTX_use_certificate_file(ctx, CERT_FILE,
|
||||
WOLFSSL_FILETYPE_PEM)) != WOLFSSL_SUCCESS) {
|
||||
fprintf(stderr, "ERROR: failed to load %s, please check the file.\n",
|
||||
CERT_FILE);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Load client key into WOLFSSL_CTX */
|
||||
if ((ret = wolfSSL_CTX_use_PrivateKey_file(ctx, KEY_FILE,
|
||||
WOLFSSL_FILETYPE_PEM)) != WOLFSSL_SUCCESS) {
|
||||
fprintf(stderr, "ERROR: failed to load %s, please check the file.\n",
|
||||
KEY_FILE);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Load CA certificate to the context */
|
||||
if ((ret = wolfSSL_CTX_load_verify_locations(ctx, ca_cert, NULL))
|
||||
!= WOLFSSL_SUCCESS) {
|
||||
fprintf(stderr, "ERROR: failed to load %s \n", ca_cert);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/*
|
||||
* Set up a TCP Socket and connect to the server
|
||||
*/
|
||||
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
|
||||
fprintf(stderr, "ERROR: failed to create a socket. errno %d\n", errno);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
servAddr.sin_family = AF_INET; /* using IPv4 */
|
||||
servAddr.sin_port = htons(port); /* on DEFAULT_PORT */
|
||||
|
||||
if ((ret = connect(sockfd, (struct sockaddr *)&servAddr, sizeof(servAddr)))
|
||||
== -1) {
|
||||
fprintf(stderr, "ERROR: failed to connect. errno %d\n", errno);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Create an SSL object */
|
||||
if ((ssl = wolfSSL_new(ctx)) == NULL) {
|
||||
fprintf(stderr, "ERROR: failed to create an SSL object\n");
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Attach the socket to the SSL */
|
||||
if ((ret = wolfSSL_set_fd(ssl, sockfd)) != WOLFSSL_SUCCESS) {
|
||||
fprintf(stderr, "ERROR: Failed to set the file descriptor\n");
|
||||
goto cleanup;
|
||||
}
|
||||
/* SSL connect to the server */
|
||||
if ((ret = wolfSSL_connect(ssl)) != WOLFSSL_SUCCESS) {
|
||||
print_SSL_error("failed SSL connect", ssl);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/*
|
||||
* Application messaging
|
||||
*/
|
||||
while (1) {
|
||||
printf("Message to send: ");
|
||||
if(fgets(msg, sizeof(msg), stdin) <= 0)
|
||||
break;
|
||||
if (strcmp(msg, "\n") == 0){ /* if empty send HTTP request */
|
||||
strncpy(msg, kHttpGetMsg, sizeof(msg));
|
||||
} else
|
||||
msg[strnlen(msg, sizeof(msg)) - 1] = '\0';
|
||||
/* send a message to the server */
|
||||
if ((ret = wolfSSL_write(ssl, msg, strnlen(msg, sizeof(msg)))) < 0)
|
||||
{
|
||||
print_SSL_error("failed SSL write", ssl);
|
||||
break;
|
||||
}
|
||||
|
||||
/*
|
||||
* closing the session, and write session information into a file
|
||||
* before writing session information
|
||||
*/
|
||||
if (strcmp(msg, "break") == 0) {
|
||||
session = wolfSSL_get_session(ssl);
|
||||
ret = write_SESS(session, SAVED_SESS);
|
||||
break;
|
||||
}
|
||||
|
||||
/* receive a message from the server */
|
||||
if ((ret = wolfSSL_read(ssl, msg, sizeof(msg) - 1)) < 0) {
|
||||
print_SSL_error("failed SSL read", ssl);
|
||||
break;
|
||||
}
|
||||
msg[ret] = '\0';
|
||||
printf("Received: %s\n", msg);
|
||||
}
|
||||
|
||||
/* Cleanup and return */
|
||||
cleanup:
|
||||
if (session != NULL) {
|
||||
wolfSSL_SESSION_free(session);
|
||||
}
|
||||
if (ssl != NULL) {
|
||||
wolfSSL_shutdown(ssl);
|
||||
wolfSSL_free(ssl);
|
||||
}
|
||||
if (sockfd != -1)
|
||||
close(sockfd);
|
||||
if (ctx != NULL)
|
||||
wolfSSL_CTX_free(ctx);
|
||||
if (ret != WOLFSSL_SUCCESS)
|
||||
ret = WOLFSSL_FAILURE;
|
||||
printf("End of TLS Client\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue