void fnPackets() {
cse4589_print_and_log("%d\n", packetCounter);
packetCounter = 0;
// return 1;
}
void fnDisplay() {
/*
* Declaration of variables Start
*/
int i;
/*
* Declaration of variables End
*/
for (i = 1; i <= numberOfServers; i++) {
cse4589_print_and_log("%-15d%-15d%-15d\n", routingDetails[i].toServerID,
routingDetails[i].fromServerID, routingDetails[i].totalCost);
}
// return 1;
}
void Console::print(std::string str) {
if (chat_curs_y >= LINES - CMD_WINDOW_HEIGHT) {
chat_curs_y = CHAT_WINDOW_STARTY;
clearchat();
}
mvwprintw(chat_window, chat_curs_y, CHAT_WINDOW_STARTX,
str.c_str()); // Print string to chat window
wrefresh(chat_window); // Refresh chat window
cse4589_print_and_log(str.c_str());
int nlines = std::count(str.begin(), str.end(), '\n');
if (nlines == 0) {
chat_curs_y += 1;
} else {
chat_curs_y += nlines;
}
}
/**
* Determines the command to be executed by parsing the user input
* @param String entered by the user
*/
void comm_process(char *comm_line){
char *comm_args[257]; //Stores tokenized arguments of the input command
char temp[999]; //Create a copy of entered command line value
int i=0,j; //Counter
unsigned int arguments=0; //Stores no of command line arguments
//Set all elements of temp array to '\0'
memset((char *)&temp,'\0',sizeof(temp));
//Set all elements of char array to '\0'
memset((char *)&comm_args,'\0',sizeof(comm_args));
//Copy input string
strcpy(temp,comm_line);
//Extract command from the user entered string
comm_args[0]=strtok(comm_line," ");
//printf("\nDEBUG: comm_args[0] is : %s",comm_args[0]);
//Extract arguments
while(comm_args[i]){
comm_args[++i]=strtok(NULL," ");
//printf("\nDEBUG: comm_args[%D] : %s",i,comm_args[i]);
if(i==5 || comm_args[i]==NULL)
{
arguments=i-1;
break;
}
//vprintf("\nDEBUG: comm_args[%d] is :%s",i,comm_args[i]);
}
comm_line=temp;
//Common commands
if (strncmp("AUTHOR",comm_args[0],sizeof("AUTHOR")-1)==0 && arguments==0)
{
success(comm_args[0]);
cse4589_print_and_log("I, alizisha, have read and understood the course academic integrity policy.\n");
end_(comm_args[0]);
}
else if( strncmp("PORT",comm_args[0],sizeof("PORT")-1)==0 && arguments==0 && isLoggedIn==TRUE)
{
if(my_port>=0 && my_port<=65536){
success(comm_args[0]);
cse4589_print_and_log("PORT:%d\n", my_port);
}else{
error_(comm_args[0]);
}
end_(comm_args[0]);
}
else if( strncmp("IP",comm_args[0],sizeof("IP")-1)==0 && arguments==0 && isLoggedIn==TRUE)
{
if(getPublicIP()>=0){
success(comm_args[0]);
cse4589_print_and_log("IP:%s\n", my_ip);
}else{
error_(comm_args[0]);
}
end_(comm_args[0]);
}
else if( strncmp("LIST",comm_args[0],sizeof("LIST")-1)==0 && arguments==0 && isLoggedIn==TRUE)
{
char *ip_addr=(char *)calloc(INET_ADDRSTRLEN+1,sizeof(char));
char *host_name=(char *)calloc(50,sizeof(char));
int list_id;
if(mode==CLIENT)
{
success(comm_args[0]);
for(i=0,list_id=1;i<=3;i++)
{
if(clients[i].port!=NOT_CONNECTED)
{
//printf("\nDEBUG: 1");
memset(host_name,'\0',50);
memset(ip_addr,'\0',INET_ADDRSTRLEN+1);
//printf("\nDEBUG: 2");
//printf("\nIP before ntop is: %d",clients[i].ip);
inet_ntop(AF_INET,&(clients[i].ip),ip_addr,INET_ADDRSTRLEN);
//printf("\nDEBUG: 3");
get_name(host_name,clients[i].ip);
//printf("\nDEBUG: 4");
cse4589_print_and_log("%-5d%-35s%-20s%-8d\n", list_id++, host_name, ip_addr, clients[i].port);
//printf("\nDEBUG: 5");
}
}
}else if(mode==SERVER)
{
success(comm_args[0]);
//memset(host_name,'\0',50);
//memset(ip_addr,'\0',INET_ADDRSTRLEN+1);
/*
for(i=0,j=1;i<=3;i++,j++)
printf("\n%d\tIP: %d\tPort: %d",j,client_list[i].nodeinfo.ip,client_list[i].nodeinfo.port);
fflush(stdout);*/
for(i=0,list_id=1;i<=3;i++)
{
if(client_list[i].isOnline==TRUE)
{
memset(host_name,'\0',50);
memset(ip_addr,'\0',INET_ADDRSTRLEN+1);
//printf("\nDEBUG: 2");
inet_ntop(AF_INET,&(client_list[i].nodeinfo.ip),ip_addr,INET_ADDRSTRLEN);
//printf("\nDEBUG: 3");
get_name(host_name,client_list[i].nodeinfo.ip);
//printf("\nDEBUG: 4");
cse4589_print_and_log("%-5d%-35s%-20s%-8d\n", list_id++, host_name, ip_addr, client_list[i].nodeinfo.port);
}
}
/*
printf("\nAfter listing!");
for(i=0,j=1;i<=3;i++,j++)
printf("\n%d\tIP: %d\tPort: %d",j,client_list[i].nodeinfo.ip,client_list[i].nodeinfo.port);
fflush(stdout);
*/
}else
{
error_(comm_args[0]);
}
free(ip_addr);
free(host_name);
end_(comm_args[0]);
}
else if( strncmp("EXIT",comm_args[0],sizeof("EXIT")-1)==0 && arguments==0)
{
//Insert method to logout
success(comm_args[0]);
end_(comm_args[0]);
exit(0);
}
//Server Commands
else if( strncmp("STATISTICS",comm_args[0],sizeof("STATISTICS")-1)==0 && arguments==0 && mode==SERVER)
{
success(comm_args[0]);
serv_stats();
end_(comm_args[0]);
}
else if( strncmp("BLOCKED",comm_args[0],sizeof("BLOCKED")-1)==0 && arguments==1 && mode==SERVER)
{
command_blocked(comm_args[1]);
end_(comm_args[0]);
}
//Client Commands
else if( strncmp("BLOCK",comm_args[0],sizeof("BLOCK")-1)==0 && arguments==1 && mode==CLIENT && isLoggedIn==TRUE
&& strncmp("BLOCKED",comm_args[0],sizeof("BLOCKED")-1)!=0)
{
//printf("\nDEBUG: Extracted IP is : %s",comm_args[1]);
//fflush(stdout);
if(client_block(comm_args[1])==TRUE)
{
success(comm_args[0]);
}else
{
error_(comm_args[0]);
}
end_(comm_args[0]);
}
else if( strncmp("LOGIN",comm_args[0],sizeof("LOGIN")-1)==0 && arguments==2 && mode==CLIENT &&isLoggedIn==FALSE )
{
if(client_login(comm_args[1],atoi(comm_args[2]))==TRUE)
{
success(comm_args[0]);
isLoggedIn=TRUE;
isLoggedOut=FALSE;
FD_SET(client_sock, &master); //Add client_socket to client's master FD list
//FD_SET(client_sock, &read_fds);
if(client_sock>fdmax)
fdmax=client_sock;
//printf("\nDebug: Client_socket successfully added to list!");
//fflush(stdout);
}else
{
error_(comm_args[0]);
}
end_(comm_args[0]);
}
else if( strncmp("REFRESH",comm_args[0],sizeof("REFRESH")-1)==0 && arguments==0 && mode==CLIENT && isLoggedIn==TRUE)
{
int i,list_id;
char *ip_addr=(char *)calloc(INET_ADDRSTRLEN+1,sizeof(char));
char *host_name=(char *)calloc(50,sizeof(char));
if(client_refresh()==TRUE)
{
success(comm_args[0]);
for(i=0,list_id=1;i<=3;i++)
{
if(clients[i].port!=NOT_CONNECTED)
{
//printf("\nDEBUG: 1");
memset(host_name,'\0',50);
memset(ip_addr,'\0',INET_ADDRSTRLEN+1);
//printf("\nDEBUG: 2");
//printf("\nIP before ntop is: %d",clients[i].ip);
inet_ntop(AF_INET,&(clients[i].ip),ip_addr,INET_ADDRSTRLEN);
//printf("\nDEBUG: 3");
get_name(host_name,clients[i].ip);
//printf("\nDEBUG: 4");
cse4589_print_and_log("%-5d%-35s%-20s%-8d\n", list_id++, host_name, ip_addr, clients[i].port);
//printf("\nDEBUG: 5");
}
}
}
else{
error_(comm_args[0]);
}
free(ip_addr);
free(host_name);
end_(comm_args[0]);
}
else if( strncmp("SEND",comm_args[0],sizeof("SEND")-1)==0 && isLoggedIn==TRUE&& mode==CLIENT && arguments>=2)
{
char *ip,*msg;//comm_args[1];
strtok(comm_line," ");
ip=strtok(NULL," ");
msg=strtok(NULL,"\n");
if(send_message_client(ip,msg)==TRUE)
{
success(comm_args[0]);
}else
{
error_(comm_args[0]);
}
end_(comm_args[0]);
}
else if( strncmp("BROADCAST",comm_args[0],sizeof("BROADCAST")-1)==0 && isLoggedIn==TRUE && mode==CLIENT &&arguments>=1)
{
char *msg;
/* Extract message from the entire command */
strtok(comm_line," "); //Separate command string
msg=strtok(NULL,"\n");
if(send_broadcast(msg)==TRUE)
success(comm_args[0]);
else
error_(comm_args[0]);
end_(comm_args[0]);
}
else if( strncmp("UNBLOCK",comm_args[0],sizeof("UNBLOCK")-1)==0 && arguments==1 && mode==CLIENT && isLoggedIn==TRUE)
{
if(client_unblock(comm_args[1])==TRUE)
{
success(comm_args[0]);
}else{
error_(comm_args[0]);
}
end_(comm_args[0]);
}
else if( strncmp("LOGOUT",comm_args[0],sizeof("LOGOUT")-1)==0 && arguments==0 && mode==CLIENT && isLoggedIn==TRUE)
{
if(client_logout()==TRUE)
{
success(comm_args[0]);
isLoggedIn=FALSE;
isLoggedOut=TRUE;
//Stop listening on client_sock
FD_CLR(client_sock, &master);
}else
{
error_(comm_args[0]);
}
end_(comm_args[0]);
}
else if( strncmp("SENDFILE",comm_args[0],sizeof("SENDFILE")-1)==0 && arguments==2 && mode==CLIENT && isLoggedIn==TRUE){
}else{
}
}
/**
* Prints and logs the successful execution of a command
* @param Command name
*/
void success(char* command){
cse4589_print_and_log("[%s:SUCCESS]\n",command);
}
/**
* Prints and logs the end of execution of a command
* @param Command name
*/
void end_(char* command){
cse4589_print_and_log("[%s:END]\n",command);
}
/**
* Prints and logs an error message in execution of a command
* @param Command name
*/
void error_(char* command){
cse4589_print_and_log("[%s:ERROR]\n",command);
}
int fnAcademicIntegrity() {
cse4589_print_and_log(
"I have read and understood the course academic integrity policy located at http://www.cse.buffalo.edu/faculty/dimitrio/courses/cse4589_f14/index.html#integrity");
return 1;
}
/**
* fnUDPListen function
*
* @param inputCmd Command line input
* @param portNumber Process port number
* @return char* Input Typed by User
*
* Start Listening Port and receive input commands and other packets
*/
void fnUDPListen() {
/*
* Declaration of variables Start
*/
int fdMax, sockIndex;
struct addrinfo server_addr, *servinfo, *p;
int getaddrinfoResult, selectResult;
fd_set read_fds;
FD_ZERO(&master); // clear the master and temp sets
FD_ZERO(&read_fds);
int receivedPacketSize, numberOfReceivedBytes, numberOfBytesToBeSent;
socklen_t theirAddrLength;
char bufferForReceivedPacket[1024];
char * bufferForPacketToBeSent;
struct sockaddr_storage theirAddr;
struct in_addr addr;
struct timeval tv;
int i;
int packetReceived;
/*
* Declaration of variables End
*/
servinfo = malloc(100);
p = malloc(100);
size_t sizeOfPacket = sizeof(uint32_t) * 2
+ (3 * sizeof(uint32_t) * numberOfServers);
// bufferForReceivedPacket = (char *) malloc(sizeOfPacket);
bufferForPacketToBeSent = (char *) malloc(sizeOfPacket);
//Ref: Beej Guide
memset(&server_addr, 0, sizeof server_addr);
server_addr.ai_family = AF_INET;
server_addr.ai_socktype = SOCK_DGRAM;
server_addr.ai_flags = AI_PASSIVE;
// strcpy(myPort,"4567");
if ((getaddrinfoResult = getaddrinfo(NULL, myPort, &server_addr, &servinfo))
!= 0) {
fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(getaddrinfoResult));
// return 1;
}
for (p = servinfo; p != NULL; p = p->ai_next) {
if ((udpSocket = socket(p->ai_family, p->ai_socktype, p->ai_protocol))
== -1) {
perror("listener:socket\n");
continue;
}
if (bind(udpSocket, p->ai_addr, p->ai_addrlen) == -1) {
close(udpSocket);
perror("listener:bind");
continue;
}
break;
}
if (p == NULL) {
fprintf(stderr, "listener: failed to bind socket\n");
// return 2;
}
freeaddrinfo(servinfo);
printf("listener waiting to recvfrom\n");
FD_SET(udpSocket, &master);
FD_SET(0, &master); //Add STDIN
fdMax = udpSocket;
tv.tv_sec = timeOut;
tv.tv_usec = 0;
// optval = 1;
// setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR,(const void *)&optval , sizeof(int));
while (1) {
read_fds = master; // create a copy
selectResult = select(fdMax + 1, &read_fds, NULL, NULL, &tv);
if (selectResult == -1) {
// perror("Select error");
exit(4);
} else if (selectResult > 0) {
for (sockIndex = 0; sockIndex <= fdMax; sockIndex++) {
// printf("Socket received\n");
if (FD_ISSET(sockIndex, &read_fds)) {
// printf("FD set\n");
if (sockIndex == 0) {
char * userSelection = fnReadUserInput(); //read_line(fgets(GetUserInput,sizeof(GetUserInput),stdin));
// userSelection =
fnSelectCommandAction(userSelection);
}
if (sockIndex == udpSocket) {
// printf("Socket received from node in the network\n");
// receivedPacketSize = sizeof(uint32_t) * 2
// + (3 * sizeof(uint32_t) * numberOfServers);
// bufferForReceivedPacket = (char *) malloc(
// sizeOfPacket);
printf("sizeOfPacket = %d\n", sizeOfPacket);
printf("Original size of buffer = %d\n",
sizeof(bufferForReceivedPacket));
// printf(
// "All set to receive incoming packet in buffer\n");
// numberOfReceivedBytes = recvfrom(sockIndex,
// bufferForReceivedPacket, receivedPacketSize, 0,
// (struct sockaddr *) &theirAddr,
// &theirAddrLength);
numberOfReceivedBytes = recvfrom(sockIndex,
bufferForReceivedPacket,
sizeof(bufferForReceivedPacket), 0,
NULL,
NULL);
if (numberOfReceivedBytes == -1) {
perror("Error on recvfrom");
exit(1);
}
printf("Number of bytes received = %d\n",
numberOfReceivedBytes);
printf(
"Packet received from network\nNow verifying if received from neighbor\n");
printf("Packet size being sent = %d\n",
sizeof(bufferForReceivedPacket));
// if (fnVerifyIfNeighbor(bufferForReceivedPacket)) {
// cse4589_dump_packet(bufferForReceivedPacket,
// sizeOfPacket);
packetReceived = fnStoreReceivedPacket(
bufferForReceivedPacket);
//add logic to update routingPacketToBeSentToNeighbors struct and routingDetails struct
if (packetReceived > 0) {
cse4589_print_and_log(
"RECEIVED A MESSAGE FROM SERVER %d\n",
packetReceived);
fnFillPacketStruct();
packetCounter++;
}
// }
}
}
}
} else if (selectResult == 0) {
//when timeout occurs
for (i = 0; i < numberOfNeighbors; i++) {
printf("Check to send updates to all neighbors\n");
if (routingDetails[neighbor[i]].counter != 127) {
routingDetails[neighbor[i]].counter++;
}
if (routingDetails[neighbor[i]].counter == 3) {
routingDetails[neighbor[i]].counter = 127;
// routingDetails[neighbor[i]].totalCost = INF;
costMatrix[myServerID][i] = INF;
}
fnBellmanFordAlgorithm();
fnFillPacketStruct();
bufferForPacketToBeSent = fnCreatePacket();
// if ((numberOfBytesToBeSent = sendto(udpSocket,
// bufferForPacketToBeSent,
// sizeof(bufferForPacketToBeSent), 0,
// (struct sockaddr *) &server_addr,
// sizeof server_addr)) == -1) {
// perror("Packet sending error");
// return 0;
// }
// return 1;
fnSendPacket(neighbor[i]);
}
tv.tv_sec = timeOut;
tv.tv_usec = 0;
}
}
// return 0;
}
/**
* fnSelectCommandAction function
*
* @param inputCmd Command line input
* @param portNumber Process port number
* @return char* Input Typed by User
*
*
*/
void fnSelectCommandAction(char* inputCmd) {
int count = 0;
int i;
int flag = 1;
int functionExecuteSuccess = 0;
char *token;
char outputCmd1[50];
char outputCmd2[50];
char outputCmd3[50];
char outputCmd4[50];
char errorMessage[1024];
token = (char *) malloc(50);
// strcpy(errorMessage, (char *) malloc(255);
token = strtok(inputCmd, " \n");
while (token != NULL) {
if (count < 4) {
if (count == 0) {
strcpy(outputCmd1, token);
}
else if (count == 1) {
strcpy(outputCmd2, token);
}
else if (count == 2) {
strcpy(outputCmd3, token);
}
else if (count == 3) {
strcpy(outputCmd4, token);
}
} else
strcpy(errorMessage, "Invalid command or invalid number of arguments");
cse4589_print_and_log("%s:%s\n", outputCmd1, errorMessage);
token = strtok(NULL, " \n");
count += 1;
}
if (count == 1) {
if (strcasecmp(outputCmd1, "STEP") == 0) {
functionExecuteSuccess = fnStep();
if (functionExecuteSuccess == 1) {
cse4589_print_and_log("%s:SUCCESS\n", outputCmd1);
} else {
strcpy(errorMessage, "Command execution failed to send routing updates to some or all neighbors");
cse4589_print_and_log("%s:%s\n", outputCmd1, errorMessage);
}
} else if (strcasecmp(outputCmd1, "PACKETS") == 0) {
cse4589_print_and_log("%s:SUCCESS\n", outputCmd1);
fnPackets();
} else if (strcasecmp(outputCmd1, "DISPLAY") == 0) {
cse4589_print_and_log("%s:SUCCESS\n", outputCmd1);
fnDisplay();
} else if (strcasecmp(outputCmd1, "CRASH") == 0) {
fnCrash();
} else if (strcasecmp(outputCmd1, "DUMP") == 0) {
functionExecuteSuccess = fnDump();
if (functionExecuteSuccess == 1) {
cse4589_print_and_log("%s:SUCCESS\n", outputCmd1);
} else {
strcpy(errorMessage, "Command execution failed to dump the packet");
cse4589_print_and_log("%s:%s\n", outputCmd1, errorMessage);
}
} else if (strcasecmp(outputCmd1, "ACADEMIC_INTEGRITY") == 0) {
cse4589_print_and_log("%s:SUCCESS\n", outputCmd1);
fnAcademicIntegrity();
} else {
fnErrorMsg();
strcpy(errorMessage, "Command execution failed because it is not a valid command");
cse4589_print_and_log("%s:%s\n", outputCmd1, errorMessage);
}
}
else if (count == 2) {
if (strcasecmp(outputCmd1, "DISABLE") == 0) {
for (i = 0; i < strlen(outputCmd2); i++) {
if (isdigit(outputCmd2[i])) {
}
else {
flag = 0;
break;
}
}
if (flag == 1) {
functionExecuteSuccess = fnDisable(atoi(outputCmd2));
if (functionExecuteSuccess == 1) {
cse4589_print_and_log("%s:SUCCESS\n", outputCmd1);
} else {
strcpy(errorMessage, "Command execution failed to disable the link in the network");
cse4589_print_and_log("%s:%s\n", outputCmd1, errorMessage);
}
} else {
strcpy(errorMessage, "Command execution failed Input command 2 can only be numeric");
cse4589_print_and_log("%s:%s\n", outputCmd1, errorMessage);
}
} else {
fnErrorMsg();
strcpy(errorMessage, "Command execution failed because it is not a valid command");
cse4589_print_and_log("%s:%s\n", outputCmd1, errorMessage);
}
}
else if (count == 4) {
if (strcasecmp(outputCmd1, "UPDATE") == 0) {
for (i = 0; i < strlen(outputCmd2); i++) {
if (isdigit(outputCmd2[i])) {
}
else {
flag = 0;
break;
}
}
if (flag == 1) {
for (i = 0; i < strlen(outputCmd3); i++) {
if (isdigit(outputCmd3[i])) {
}
else {
flag = 0;
break;
}
}
if (flag == 1) {
for (i = 0; i < strlen(outputCmd4); i++) {
if (isdigit(outputCmd4[i])) {
}
else {
flag = 0;
break;
}
}
if (flag == 1) {
functionExecuteSuccess = fnUpdate(atoi(outputCmd2),
atoi(outputCmd3), atoi(outputCmd4));
if (functionExecuteSuccess == 1) {
cse4589_print_and_log("%s:SUCCESS\n", outputCmd1);
} else if (functionExecuteSuccess == 2) {
strcpy(errorMessage, "Command execution failed ServerID2 is not a neighbor for the current node");
cse4589_print_and_log("%s:%s\n", outputCmd1,
errorMessage);
} else if (functionExecuteSuccess == 3) {
strcpy(errorMessage, "Command execution failed ServerID1 is not a neighbor for the current node");
cse4589_print_and_log("%s:%s\n", outputCmd1,
errorMessage);
} else {
strcpy(errorMessage, "Command execution failed to update the link cost");
cse4589_print_and_log("%s:%s\n", outputCmd1,
errorMessage);
}
} else {
strcpy(errorMessage, "Command execution failed Input command 4 can only be numeric");
cse4589_print_and_log("%s:%s\n", outputCmd1,
errorMessage);
}
} else {
strcpy(errorMessage, "Command execution failed Input command 3 can only be numeric");
cse4589_print_and_log("%s:%s\n", outputCmd1, errorMessage);
}
} else {
strcpy(errorMessage, "Command execution failed Input command 2 can only be numeric");
cse4589_print_and_log("%s:%s\n", outputCmd1, errorMessage);
}
} else {
fnErrorMsg();
strcpy(errorMessage, "Command execution failed because it is not a valid command");
cse4589_print_and_log("%s:%s\n", outputCmd1, errorMessage);
}
} else {
fnErrorMsg();
strcpy(errorMessage, "Command execution failed because it is not a valid command");
cse4589_print_and_log("%s:%s\n", outputCmd1, errorMessage);
}
fflush(stdout);
}
int process_cmd(char *cmd,int sockfd){
char * msg;
commands cmd_pkt;
char *cmds;
cmds =strdup(cmd);
cmd_pkt = getdlmtdcmdstr(cmd);
if(cmd_pkt.no_of_args == -1)
return 0;
//printf("%s:%s\n",cmd_pkt.cmnd,"");
/*call method to validate the nodes*/
if(strcasecmp(cmd_pkt.arglist[0],"UPDATE")==0){
msg ="Invalid Arguments.Usage - update <server-ID1> <server-ID2> <Link Cost>";
if(cmd_pkt.no_of_args != 4 ){
//printf("%s:%s\n",cmd_pkt.cmnd,msg);
cse4589_print_and_log("%s:%s\n",cmds,msg);
//printf("\n[PA3]$:Invalid Arguments.Usage - update <server-ID1> <server-ID2> <Link Cost>");
return -1;
}
if(validate_nodes(cmd_pkt.arglist,0) == -1){
msg ="Invalid Arguments.server-ID1 - Node Id server-ID2:Must be neighbor node Id";
cse4589_print_and_log("%s:%s\n",cmds,msg);
return -1;
}
else{
update_rout_info(cmd_pkt.arglist);
compute_bellman_ford();
}
//printf("%s:SUCCESS\n",cmd_pkt.cmnd);
cse4589_print_and_log("%s:SUCCESS\n",cmds);
}/*call method to send the update packet */
else if(strcasecmp(cmd_pkt.arglist[0],"STEP")==0){
if(cmd_pkt.no_of_args > 1 ){
msg ="Invalid Arguments.Usage - step";
cse4589_print_and_log("%s:%s\n",cmds,msg);
//printf("\n[PA3]$:Invalid Arguments.Usage - step");
return -1;
}
send_update_packet_nnodes(sockfd);
//printf("%s:SUCCESS\n",cmd_pkt.cmnd);
cse4589_print_and_log("%s:SUCCESS\n",cmds);
}
else if(strcasecmp(cmd_pkt.arglist[0],"PACKETS")==0){
if(cmd_pkt.no_of_args > 1 ){
msg ="Invalid Arguments.Usage - packets";
cse4589_print_and_log("%s:%s\n",cmds,msg);
//printf("\n[PA3]$:Invalid Arguments.Usage - packets");
return -1;
}
//display the packets received
//printf("\n The number of packets sent : %d",packet_count);
cse4589_print_and_log("%s:SUCCESS\n",cmds);
cse4589_print_and_log("%d\n",packet_count);
//printf("%s:SUCCESS\n",cmd_pkt.cmnd);
packet_count = 0 ;
}else if(strcasecmp(cmd_pkt.arglist[0],"DISPLAY")==0){
if(cmd_pkt.no_of_args > 1 ){
msg ="Invalid Arguments.Usage - display";
cse4589_print_and_log("%s:%s\n",cmds,msg);
//printf("\n[PA3]$:Invalid Arguments.Usage - display");
return -1;
}
cse4589_print_and_log("%s:SUCCESS\n",cmds);
dsplay_rt_table();
}else if(strcasecmp(cmd_pkt.arglist[0],"DISABLE")==0){
if(cmd_pkt.no_of_args != 2 ){
msg ="Invalid Arguments.Usage - disable <server-id>";
//printf("\n[PA3]$:Invalid Arguments.Usage - disable <server-ID>");
cse4589_print_and_log("%s:%s\n",cmds,msg);
return -1;
}
int iret = 0;
iret = disable_link(cmd_pkt.arglist);
//printf("%s:SUCCESS\n",cmd_pkt.cmnd);
msg ="Invalid Arguments.Usage - Server Id has to be a neighbor node id";
if(iret == 1)
cse4589_print_and_log("%s:SUCCESS\n",cmds);
else
cse4589_print_and_log("%s:%s\n",cmds,msg);
}else if(strcasecmp(cmd_pkt.arglist[0],"CRASH")==0){
if(cmd_pkt.no_of_args > 1 ){
msg ="Invalid Arguments.Usage - crash";
cse4589_print_and_log("%s:%s\n",cmds,msg);
//printf("\n[PA3]$:Invalid Arguments.Usage - crash");
return -1;
}
gotosleep();
}else if(strcasecmp(cmd_pkt.arglist[0],"DUMP")==0){
if(cmd_pkt.no_of_args > 1 ){
msg ="Invalid Arguments.Usage - dump";
//printf("\n[PA3]$:Invalid Arguments.Usage - dump");
cse4589_print_and_log("%s:%s\n",cmds,msg);
return -1;
}
build_rtpkt_dump(1);
//printf("%s:SUCCESS\n",cmd_pkt.cmnd);
cse4589_print_and_log("%s:SUCCESS\n",cmds);
}else if(strcasecmp(cmd_pkt.arglist[0],"academic_integrity")== 0)
{
//printf("\n I have read and understood the course academic integrity policy located at http://www.cse.buffalo.edu/faculty/dimitrio/courses/cse4589_f14/index.html#integrity");
cse4589_print_and_log("I have read and understood the course academic integrity policy located at http://www.cse.buffalo.edu/faculty/dimitrio/courses/cse4589_f14/index.html#integrity");
}else{
printf("\n[PA3]$:Command not found");
fflush(stdout);//cse4589_print_and_log("Command not found\n");
return -1;
}
free(cmds);
return 1;
}