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wolfssl-examples
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threaded updates, not yet complete

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Kaleb Himes 2014-06-30 10:06:07 -06:00
parent 67061751d9
commit b75a5d4e7c
1 changed files with 148 additions and 94 deletions
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242
project1/dtls_secured_multithreaded/server-dtls-threaded.c
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@ -49,66 +49,104 @@ struct sockaddr_in servAddr; /* our server's address */
int AwaitDGram(CYASSL_CTX* ctx);
void* ThreadControl(void*);
typedef struct {
int activefd;
int size;
unsigned char b[MSGLEN];
}threadArgs;
int AwaitDGram(CYASSL_CTX* ctx)
{
int on = 1;
int res = 1;
int bytesRcvd = 0;
int recvLen = 0; /* length of message */
int listenfd = 0; /* Initialize our socket */
CYASSL* ssl = NULL;
socklen_t cliLen;
socklen_t len = sizeof(on);
unsigned char b[MSGLEN]; /* watch for incoming messages */
char buff[MSGLEN]; /* the incoming message */
char ack[] = "I hear you fashizzle!\n";
unsigned char buf[MSGLEN]; /* watch for incoming messages */
/* Create a UDP/IP socket */
if ((listenfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0 ) {
printf("Cannot create socket.\n");
cleanup = 1;
}
printf("Socket allocated\n");
/* clear servAddr each loop */
memset((char *)&servAddr, 0, sizeof(servAddr));
/* host-to-network-long conversion (htonl) */
/* host-to-network-short conversion (htons) */
servAddr.sin_family = AF_INET;
servAddr.sin_addr.s_addr = htonl(INADDR_ANY);
servAddr.sin_port = htons(SERV_PORT);
/* Eliminate socket already in use error */
res = setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &on, len);
if (res < 0) {
printf("Setsockopt SO_REUSEADDR failed.\n");
cleanup = 1;
return 1;
}
/*Bind Socket*/
if (bind(listenfd,
(struct sockaddr *)&servAddr, sizeof(servAddr)) < 0) {
printf("Bind failed.\n");
cleanup = 1;
return 1;
}
printf("Awaiting client connection on port %d\n", SERV_PORT);
while (cleanup != 1) {
/* Create a UDP/IP socket */
if ((listenfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0 ) {
printf("Cannot create socket.\n");
cleanup = 1;
}
printf("Socket all/ocated\n");
threadArgs* args;
args = (threadArgs *) malloc(sizeof(threadArgs));
/* clear servAddr each loop */
memset((char *)&servAddr, 0, sizeof(servAddr));
/* host-to-network-long conversion (htonl) */
/* host-to-network-short conversion (htons) */
servAddr.sin_family = AF_INET;
servAddr.sin_addr.s_addr = htonl(INADDR_ANY);
servAddr.sin_port = htons(SERV_PORT);
/* Eliminate socket already in use error */
res = setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &on, len);
if (res < 0) {
printf("Setsockopt SO_REUSEADDR failed.\n");
cleanup = 1;
return 1;
}
/*Bind Socket*/
if (bind(listenfd,
(struct sockaddr *)&servAddr, sizeof(servAddr)) < 0) {
printf("Bind failed.\n");
cleanup = 1;
return 1;
}
printf("Awaiting client connection on port %d\n", SERV_PORT);
cliLen = sizeof(cliaddr);
bytesRcvd = (int)recvfrom(listenfd, (char *)&b, sizeof(b), MSG_PEEK,
(struct sockaddr*)&cliaddr, &cliLen);
cliLen = sizeof(cliAddr);
/* note argument 4 of recvfrom not MSG_PEEK as dtls will see
* handshake packets and think a message is arriving. Instead
* read any real message to struct and pass struct into thread
* for processing.
*/
bytesRcvd = (int)recvfrom(listenfd, (char *)buf, sizeof(buf), 0,
(struct sockaddr*)&cliAddr, &cliLen);
if (bytesRcvd < 0) {
printf("No clients in que, enter idle state\n");
continue;
}
else if (bytesRcvd > 0) {
if (connect(listenfd, (const struct sockaddr *)&cliaddr,
sizeof(cliaddr)) != 0) {
memcpy(args->b, buf, sizeof(buf));
args->size = bytesRcvd;
if ((args->activefd = socket(AF_INET, SOCK_DGRAM, 0)) < 0 ) {
printf("Cannot create socket.\n");
cleanup = 1;
}
res = setsockopt(args->activefd, SOL_SOCKET, SO_REUSEADDR, &on,
len);
if (res < 0) {
printf("Setsockopt SO_REUSEADDR failed.\n");
cleanup = 1;
return 1;
}
#ifdef SO_REUSEPORT
res = setsockopt(args->activefd, SOL_SOCKET, SO_REUSEPORT, &on, len);
if (res < 0) {
printf("Setsockopt SO_REUSEPORT failed.\n");
cleanup = 1;
return 1;
}
#endif
if (connect(args->activefd, (const struct sockaddr *)&cliAddr,
sizeof(cliAddr)) != 0) {
printf("Udp connect failed.\n");
cleanup = 1;
return 1;
@ -121,57 +159,13 @@ int AwaitDGram(CYASSL_CTX* ctx)
}
printf("Connected!\n");
/* Create the CYASSL Object */
if ((ssl = CyaSSL_new(ctx)) == NULL) {
printf("CyaSSL_new error.\n");
cleanup = 1;
return 1;
}
/* set the session ssl to client connection port */
CyaSSL_set_fd(ssl, listenfd);
if (CyaSSL_accept(ssl) != SSL_SUCCESS) {
pthread_t threadid;
printf("new id %d created.\n",(int) threadid);
/* SPIN A THREAD HERE TO HANDLE "buff" and "reply/ack" */
pthread_create(&threadid, NULL, ThreadControl, args);
printf("control passed to thread control.\n");
}
int e = CyaSSL_get_error(ssl, 0);
printf("error = %d, %s\n", e, CyaSSL_ERR_reason_error_string(e));
printf("SSL_accept failed.\n");
continue;
}
if ((recvLen = CyaSSL_read(ssl, buff, sizeof(buff)-1)) > 0) {
printf("heard %d bytes\n", recvLen);
/* SPIN A THREAD HERE TO HANDLE "buff" and "reply/ack" */
/* buff[recvLen] = 0;
printf("I heard this: \"%s\"\n", buff);
}
else if (recvLen < 0) {
int readErr = CyaSSL_get_error(ssl, 0);
if(readErr != SSL_ERROR_WANT_READ) {
printf("SSL_read failed.\n");
cleanup = 1;
return 1;
}
}
if (CyaSSL_write(ssl, ack, sizeof(ack)) < 0) {
printf("CyaSSL_write fail.\n");
cleanup = 1;
return 1;
}
else {
printf("Sending reply.\n");
}
printf("reply sent \"%s\"\n", ack);
CyaSSL_set_fd(ssl, 0);
CyaSSL_shutdown(ssl);
CyaSSL_free(ssl);
printf("Client left return to idle state\n");
}*/
return 0;
}
@ -179,8 +173,68 @@ void* ThreadControl(void* openSock)
{
pthread_detach(pthread_self());
threadArgs* args = (threadArgs*)openSock;
int recvLen = 0; /* length of message */
int activefd = args->activefd; /* the active descriptor */
int msgLen = args->size; /* the size of message */
unsigned char buff[msgLen]; /* the incoming message */
char ack[] = "I hear you fashizzle!\n";
CYASSL* ssl;
memcpy(buff, args->b, msgLen);
/* Create the CYASSL Object */
if ((ssl = CyaSSL_new(ctx)) == NULL) {
printf("CyaSSL_new error.\n");
cleanup = 1;
return NULL;
}
/* set the session ssl to client connection port */
CyaSSL_set_fd(ssl, activefd);
if (CyaSSL_accept(ssl) != SSL_SUCCESS) {
int e = CyaSSL_get_error(ssl, 0);
printf("error = %d, %s\n", e, CyaSSL_ERR_reason_error_string(e));
printf("SSL_accept failed.\n");
return NULL;
}
if ((recvLen = CyaSSL_read(ssl, buff, msgLen-1)) > 0) {
printf("heard %d bytes\n", recvLen);
buff[recvLen] = 0;
printf("I heard this: \"%s\"\n", buff);
}
else if (recvLen < 0) {
int readErr = CyaSSL_get_error(ssl, 0);
if(readErr != SSL_ERROR_WANT_READ) {
printf("SSL_read failed.\n");
cleanup = 1;
return NULL;
}
}
if (CyaSSL_write(ssl, ack, sizeof(ack)) < 0) {
printf("CyaSSL_write fail.\n");
cleanup = 1;
return NULL;
}
else {
printf("Sending reply.\n");
}
printf("reply sent \"%s\"\n", ack);
CyaSSL_shutdown(ssl);
CyaSSL_free(ssl);
close(activefd);
free(openSock); /* valgrind friendly free */
printf("Client left return to idle state\n");
printf("Exiting thread.\n\n");
pthread_exit(&exitRet);
pthread_exit(openSock);
}
int main(int argc, char** argv)