multi-threaded, nonblocking server working
Kaleb Himes
parent
ee836df7b6
commit
63773d818b
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@ -43,16 +43,15 @@
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#define SERV_PORT 11111 /* define our server port number */
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#define MSGLEN 4096
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CYASSL_CTX* ctx;
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static int cleanup; /* To handle shutdown */
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CYASSL_CTX* ctx; /* ctx pointer */
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static int cleanup; /* To handle shutdown */
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struct sockaddr_in servaddr; /* our server's address */
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struct sockaddr_in cliaddr; /* the client's address */
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int listenfd; /* Initialize our socket */
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static int dtls_select(socklen_t sockfd, int to_sec);
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void *ThreadControl(void* openSock);
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int Accept();
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void* ThreadControl(void*);
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void sig_handler(const int sig)
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{
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@ -65,7 +64,7 @@ static void err_sys(const char* msg)
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{
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printf("yassl error: %s\n", msg);
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if (msg)
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exit(EXIT_FAILURE);
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exit(0);
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}
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enum {
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@ -108,140 +107,11 @@ static int dtls_select(socklen_t sockfd, int to_sec)
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return TEST_SELECT_FAIL;
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}
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void *ThreadControl(void* openSock)
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{
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char ack[] = "I hear you fashizzle!\n";
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int connfd = *(int*)openSock;
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CYASSL* ssl;
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printf("Connected with a client!\n");
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/* Create the CYASSL Object */
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if (( ssl = CyaSSL_new(ctx) ) == NULL) {
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fprintf(stderr, "CyaSSL_new error.\n");
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exit(EXIT_FAILURE);
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}
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/* set the session ssl to client connection port */
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CyaSSL_set_fd(ssl, connfd);
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/* set listen port to nonblocking, accept nonblocking */
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/* handle peer error */
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CyaSSL_set_using_nonblock(ssl, 1);
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for (;;) {
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char buff[MSGLEN];
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int recvlen = 0;
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bzero(&buff, sizeof(buff));
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if (( recvlen = CyaSSL_read(ssl, buff, sizeof(buff)-1)) > 0) {
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printf("heard %d bytes\n", recvlen);
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buff[recvlen] = 0;
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printf("I heard this: \"%s\"\n", buff);
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}
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if (recvlen < 0) {
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int readErr = CyaSSL_get_error(ssl, 0);
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if(readErr != SSL_ERROR_WANT_READ)
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err_sys("SSL_read failed");
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}
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if (CyaSSL_write(ssl, ack, sizeof(ack)) < 0) {
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err_sys("CyaSSL_write fail");
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}
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else
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printf("Lost the connection to client\n");
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printf("reply sent \"%s\"\n", ack);
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printf("Client left return to idle state\n");
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CyaSSL_set_fd(ssl, 0);
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CyaSSL_shutdown(ssl);
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CyaSSL_free(ssl);
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close(connfd);
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break;
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}
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}
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int main(int argc, char** argv)
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{
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/* CREATE THE SOCKET */
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char ack[] = "I hear you fashizzle!";
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struct sockaddr_in servaddr; /* our server's address */
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struct sockaddr_in cliaddr; /* the client's address */
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int listenfd; /* Initialize our socket */
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socklen_t clilen; /* length of address' */
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int recvlen = 0; /* length of message */
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char buff[MSGLEN]; /* the incoming message */
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struct sigaction act, oact; /* structures for signal handling */
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/*
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* Define a signal handler for when the user closes the program
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* with Ctrl-C. Also, turn off SA_RESTART so that the OS doesn't
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* restart the call to accept() after the signal is handled.
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*/
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act.sa_handler = sig_handler;
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sigemptyset(&act.sa_mask);
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act.sa_flags = 0;
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sigaction(SIGINT, &act, &oact);
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// CyaSSL_Debugging_ON();
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CyaSSL_Init(); /* Initialize CyaSSL */
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if ( (ctx = CyaSSL_CTX_new(CyaDTLSv1_2_server_method())) == NULL){
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fprintf(stderr, "CyaSSL_CTX_new error.\n");
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exit(EXIT_FAILURE);
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}
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printf("CTX set to DTLS 1.2\n");
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if (CyaSSL_CTX_load_verify_locations(ctx,"../certs/ca-cert.pem",0) !=
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SSL_SUCCESS) {
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fprintf(stderr, "Error loading ../certs/ca-cert.pem, "
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"please check the file.\n");
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exit(EXIT_FAILURE);
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}
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printf("Loaded CA certs\n");
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if (CyaSSL_CTX_use_certificate_file(ctx,"../certs/server-cert.pem",
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SSL_FILETYPE_PEM) != SSL_SUCCESS) {
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fprintf(stderr, "Error loading ../certs/server-cert.pem, "
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"please check the file.\n");
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exit(EXIT_FAILURE);
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}
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printf("Loaded server certs\n");
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if (CyaSSL_CTX_use_PrivateKey_file(ctx,"../certs/server-key.pem",
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SSL_FILETYPE_PEM) != SSL_SUCCESS) {
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fprintf(stderr, "Error loading ../certs/server-key.pem, "
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"please check the file.\n");
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exit(EXIT_FAILURE);
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}
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printf("Loaded server keys\n");
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/* BEGIN: avoid valgrind error when using DTLS v1.2 and AES */
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int ret;
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ret = CyaSSL_CTX_set_cipher_list(ctx, "DES-CBC3-SHA");
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if(ret == SSL_SUCCESS)
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printf("ret successfully set to \"DES-CBC3-SHA\"\n");
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/* END: avoid valgrind error */
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int Accept(){
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while (cleanup != 1) {
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socklen_t clilen; /* length of address' */
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if ( (listenfd = socket(AF_INET, SOCK_DGRAM, 0) ) < 0 ) {
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err_sys("cannot create socket");
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@ -293,46 +163,43 @@ int main(int argc, char** argv)
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connfd = (int)recvfrom(listenfd, (char *)&b, sizeof(b), MSG_PEEK,
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(struct sockaddr*)&cliaddr, &clilen);
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/* No clients attempting to connect */
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if (connfd < 0){
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printf("No clients in que, enter idle state\n");
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}
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/* Client attempted to connect but was not using udp */
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else if (connfd > 0) {
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if (connect(listenfd, (const struct sockaddr *)&cliaddr,
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sizeof(cliaddr)) != 0)
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err_sys("udp connect failed");
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}
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/* client attempted to connect, recvfrom failed */
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else err_sys("recvfrom failed");
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/* Create the CYASSL Object */
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if (( ssl = CyaSSL_new(ctx) ) == NULL) {
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fprintf(stderr, "CyaSSL_new error.\n");
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exit(EXIT_FAILURE);
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}
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/* set the session ssl to client connection port */
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CyaSSL_set_fd(ssl, listenfd);
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/* set listen port to nonblocking, accept nonblocking */
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/* handle peer error */
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CyaSSL_set_using_nonblock(ssl, 1);
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ret = CyaSSL_accept(ssl);
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int ret;
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int error = CyaSSL_get_error(ssl, 0);
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socklen_t sockfd = (socklen_t)CyaSSL_get_fd(ssl);
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int select_ret;
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ret = CyaSSL_accept(ssl);
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printf("ret = %d\n", ret);
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pthread_t threadID;
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while (ret != SSL_SUCCESS && (error == SSL_ERROR_WANT_READ ||
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error == SSL_ERROR_WANT_WRITE)) {
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@ -348,21 +215,11 @@ int main(int argc, char** argv)
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printf("waiting to select()\n");
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/* select for dtls server */
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select_ret = dtls_select(sockfd, currTimeout);
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/* initialize new thread ID each time we loop */
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if (select_ret == TEST_RECV_READY) {
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printf("TEST_RECV_READY!\n");
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while (( ret = CyaSSL_accept(ssl))){
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if (pthread_create(&threadID, NULL, ThreadControl, (void *)
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&ret) < 0)
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printf("pthread_create() failed\n");
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printf("Control handed to ThreadControl()\n");
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}
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ret = CyaSSL_accept(ssl);
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}
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if (select_ret == TEST_ERROR_READY && !CyaSSL_dtls(ssl)) {
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@ -388,41 +245,333 @@ int main(int argc, char** argv)
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continue;
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}
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pthread_t threadID;
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printf("Connected with a client!\n");
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if (( recvlen = CyaSSL_read(ssl, buff, sizeof(buff)-1)) > 0) {
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printf("heard %d bytes\n", recvlen);
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buff[recvlen] = 0;
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printf("I heard this: \"%s\"\n", buff);
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if (pthread_create(&threadID, NULL, ThreadControl, (void *)&ret) < 0) {
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printf("pthread_create failed.\n");
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}
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printf("Connection being re-routed to Thread Control.\n");
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if (recvlen < 0) {
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int readErr = CyaSSL_get_error(ssl, 0);
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if(readErr != SSL_ERROR_WANT_READ)
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err_sys("SSL_read failed");
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}
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/*
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printf("Connected with a client!\n");
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if (( recvlen = CyaSSL_read(ssl, buff, sizeof(buff)-1)) > 0){
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printf("heard %d bytes\n", recvlen);
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buff[recvlen] = 0;
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printf("I heard this: \"%s\"\n", buff);
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}
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if (CyaSSL_write(ssl, ack, sizeof(ack)) < 0) {
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err_sys("CyaSSL_write fail");
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}
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if (recvlen < 0) {
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int readErr = CyaSSL_get_error(ssl, 0);
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if(readErr != SSL_ERROR_WANT_READ)
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err_sys("SSL_read failed");
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}
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else
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printf("lost the connection to client\n");
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printf("reply sent \"%s\"\n", ack);
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if (CyaSSL_write(ssl, ack, sizeof(ack)) < 0) {
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err_sys("CyaSSL_write fail");
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}
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CyaSSL_set_fd(ssl, 0);
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CyaSSL_shutdown(ssl);
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CyaSSL_free(ssl);
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else
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printf("lost the connection to client\n");
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printf("Client left return to idle state\n");
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continue;
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printf("reply sent \"%s\"\n", ack);
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CyaSSL_set_fd(ssl, 0);
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CyaSSL_shutdown(ssl);
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CyaSSL_free(ssl);
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printf("Client left return to idle state\n");
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*/
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}
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CyaSSL_CTX_free(ctx);
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return 1;
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}
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void* ThreadControl(void* openSock)
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{
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char ack[] = "I hear you fashizzle!";
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struct sockaddr_in servaddr; /* our server's address */
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struct sockaddr_in cliaddr; /* the client's address */
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int listenfd; /* Initialize our socket */
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socklen_t clilen; /* length of address' */
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int recvlen = 0; /* length of message */
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char buff[MSGLEN]; /* the incoming message */
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if ( (listenfd = socket(AF_INET, SOCK_DGRAM, 0) ) < 0 ) {
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err_sys("cannot create socket");
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return 0;
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}
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printf("Socket allocated\n");
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/* INADDR_ANY=IPaddr, socket = 11111, modify SERV_PORT to change */
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memset((char *)&servaddr, 0, sizeof(servaddr));
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/* host-to-network-long conversion (htonl) */
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/* host-to-network-short conversion (htons) */
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servaddr.sin_family = AF_INET;
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servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
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servaddr.sin_port = htons(SERV_PORT);
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/* Eliminate socket already in use error */
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int res = 1;
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int on = 1;
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socklen_t len = sizeof(on);
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res = setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &on, len);
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if (res < 0) {
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err_sys("setsockopt SO_REUSEADDR failed\n");
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}
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/*Bind Socket*/
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if (bind(listenfd, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0) {
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err_sys("bind failed");
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return 0;
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}
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printf("Socket bind complete\n");
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printf("Awaiting client connection on port %d\n", SERV_PORT);
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/* set listenfd non-blocking */
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fcntl(res, F_SETFL, O_NONBLOCK);
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CYASSL* ssl; /* initialize arg */
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clilen = sizeof(cliaddr); /* set clilen to |cliaddr| */
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unsigned char b[1500];
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int connfd = 0;
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connfd = (int)recvfrom(listenfd, (char *)&b, sizeof(b), MSG_PEEK,
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(struct sockaddr*)&cliaddr, &clilen);
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/* No clients attempting to connect */
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if (connfd < 0){
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printf("No clients in que, enter idle state\n");
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}
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/* Client attempted to connect but was not using udp */
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else if (connfd > 0) {
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if (connect(listenfd, (const struct sockaddr *)&cliaddr,
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sizeof(cliaddr)) != 0)
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err_sys("udp connect failed");
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}
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/* client attempted to connect, recvfrom failed */
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else err_sys("recvfrom failed");
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/* Create the CYASSL Object */
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if (( ssl = CyaSSL_new(ctx) ) == NULL) {
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fprintf(stderr, "CyaSSL_new error.\n");
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exit(EXIT_FAILURE);
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}
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/* set the session ssl to client connection port */
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CyaSSL_set_fd(ssl, listenfd);
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/* set listen port to nonblocking, accept nonblocking */
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CyaSSL_set_using_nonblock(ssl, 1);
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int ret;
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int error = CyaSSL_get_error(ssl, 0);
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socklen_t sockfd = (socklen_t)CyaSSL_get_fd(ssl);
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int select_ret;
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ret = CyaSSL_accept(ssl);
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printf("ret = %d\n", ret);
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while (ret != SSL_SUCCESS && (error == SSL_ERROR_WANT_READ ||
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error == SSL_ERROR_WANT_WRITE)) {
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int currTimeout = 1;
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/* NOTE: changes over time */
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currTimeout = CyaSSL_dtls_get_current_timeout(ssl);
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if (error == SSL_ERROR_WANT_READ)
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printf("Server wants to read...\n");
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else
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printf("Server wants to write...\n");
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printf("waiting to select()\n");
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select_ret = dtls_select(sockfd, currTimeout);
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if (select_ret == TEST_RECV_READY) {
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printf("TEST_RECV_READY!\n");
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ret = CyaSSL_accept(ssl);
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}
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if (select_ret == TEST_ERROR_READY && !CyaSSL_dtls(ssl)) {
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printf("TEST_ERROR_READY\n");
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error = CyaSSL_get_error(ssl, 0);
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}
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else if (select_ret == TEST_TIMEOUT && CyaSSL_dtls(ssl) &&
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CyaSSL_dtls_got_timeout(ssl) ) {
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printf("TEST_TIMEOUT\n");
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error = SSL_ERROR_WANT_READ;
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}
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else if (select_ret == TEST_TIMEOUT && CyaSSL_dtls(ssl) &&
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CyaSSL_dtls_got_timeout(ssl) >= 0) {
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error = SSL_ERROR_WANT_READ;
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}
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else {
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error = SSL_FATAL_ERROR;
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}
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}
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if (ret != SSL_SUCCESS){
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printf("SSL_accept failed\n");
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}
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pthread_t threadID;
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if (pthread_create(&threadID, NULL, ThreadControl, (void *)&ret) < 0) {
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printf("pthread_create failed.\n");
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}
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printf("Connection being re-routed to Thread Control.\n");
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printf("Connected with a client!\n");
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if (( recvlen = CyaSSL_read(ssl, buff, sizeof(buff)-1)) > 0){
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printf("heard %d bytes\n", recvlen);
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buff[recvlen] = 0;
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printf("I heard this: \"%s\"\n", buff);
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}
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if (recvlen < 0) {
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int readErr = CyaSSL_get_error(ssl, 0);
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if(readErr != SSL_ERROR_WANT_READ)
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err_sys("SSL_read failed");
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}
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if (CyaSSL_write(ssl, ack, sizeof(ack)) < 0) {
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err_sys("CyaSSL_write fail");
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}
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else
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printf("lost the connection to client\n");
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printf("reply sent \"%s\"\n", ack);
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CyaSSL_set_fd(ssl, 0);
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CyaSSL_shutdown(ssl);
|
||||
CyaSSL_free(ssl);
|
||||
|
||||
printf("Client left return to idle state\n");
|
||||
|
||||
/*
|
||||
int connfd = *(int*) openSock;
|
||||
CYASSL* ssl;
|
||||
printf("Connection now being handled by Thread Control\n\n");
|
||||
|
||||
if ((ssl = CyaSSL_new(ctx)) == NULL) {
|
||||
fprintf(stderr, "CyaSSL_new error.\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
CyaSSL_set_fd(ssl, connfd);
|
||||
CyaSSL_set_using_nonblock(ssl, 1);
|
||||
|
||||
for(;;){
|
||||
char buff[MSGLEN];
|
||||
int ret = 0;
|
||||
|
||||
bzero(&buff, sizeof(buff));
|
||||
|
||||
if ((ret = CyaSSL_read(ssl, buff, sizeof(buff)-1)) > 0) {
|
||||
printf("Client connected in Thread Control\n");
|
||||
char ack[] = "I hear you fashizzle!";
|
||||
CyaSSL_write(ssl, ack, sizeof(ack)-1);
|
||||
}
|
||||
else {
|
||||
if (ret < 0) {
|
||||
printf("CyaSSL_read error returned: %d.\n",
|
||||
CyaSSL_get_error(ssl, ret));
|
||||
continue;
|
||||
}
|
||||
else if (ret == 0)
|
||||
printf("Connection Lost, return to Idle state.\n");
|
||||
|
||||
CyaSSL_set_fd(ssl, 0);
|
||||
CyaSSL_shutdown(ssl);
|
||||
CyaSSL_free(ssl);
|
||||
break;
|
||||
}
|
||||
}
|
||||
*/
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
int main(int argc, char** argv)
|
||||
{
|
||||
/* CREATE THE SOCKET */
|
||||
|
||||
struct sigaction act, oact; /* structures for signal handling */
|
||||
|
||||
|
||||
/*
|
||||
* Define a signal handler for when the user closes the program
|
||||
* with Ctrl-C. Also, turn off SA_RESTART so that the OS doesn't
|
||||
* restart the call to accept() after the signal is handled.
|
||||
*/
|
||||
act.sa_handler = sig_handler;
|
||||
sigemptyset(&act.sa_mask);
|
||||
act.sa_flags = 0;
|
||||
sigaction(SIGINT, &act, &oact);
|
||||
|
||||
// CyaSSL_Debugging_ON();
|
||||
CyaSSL_Init(); /* Initialize CyaSSL */
|
||||
|
||||
if ( (ctx = CyaSSL_CTX_new(CyaDTLSv1_2_server_method())) == NULL){
|
||||
fprintf(stderr, "CyaSSL_CTX_new error.\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
printf("CTX set to DTLS 1.2\n");
|
||||
|
||||
if (CyaSSL_CTX_load_verify_locations(ctx,"../certs/ca-cert.pem",0) !=
|
||||
SSL_SUCCESS) {
|
||||
fprintf(stderr, "Error loading ../certs/ca-cert.pem, "
|
||||
"please check the file.\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
printf("Loaded CA certs\n");
|
||||
|
||||
if (CyaSSL_CTX_use_certificate_file(ctx,"../certs/server-cert.pem",
|
||||
SSL_FILETYPE_PEM) != SSL_SUCCESS) {
|
||||
fprintf(stderr, "Error loading ../certs/server-cert.pem, "
|
||||
"please check the file.\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
printf("Loaded server certs\n");
|
||||
|
||||
if (CyaSSL_CTX_use_PrivateKey_file(ctx,"../certs/server-key.pem",
|
||||
SSL_FILETYPE_PEM) != SSL_SUCCESS) {
|
||||
fprintf(stderr, "Error loading ../certs/server-key.pem, "
|
||||
"please check the file.\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
printf("Loaded server keys\n");
|
||||
|
||||
|
||||
int cont = Accept();
|
||||
|
||||
if(cont == 0)
|
||||
CyaSSL_CTX_free(ctx);
|
||||
return(0);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue