void Spread_reconnect(int ret){
if(ret != -8 && ret != -11 && ret != -2)
wack_alarm(EXIT, "Spread_reconnnect: Unexpected Error (%d)", ret);
wack_alarm(PRINT,"connecting to %s", Spread_name);
Clean_up();
if(Mbox >= 0) {
SP_disconnect(Mbox);
E_detach_fd( Mbox, READ_FD );
Mbox = -1;
}
/* connecting to the relevant Spread daemon, asking for group info */
if(spread_lock) {
handle_reconnect(0, NULL);
return;
}
ret = SP_connect( Spread_name, User, 0, 1, &Mbox, Private_group ) ;
if(ret == ACCEPT_SESSION) {
ret = SP_join( Mbox, Spread_group );
if( ret < 0 ) {
SP_error( ret );
SP_disconnect( Mbox );
Mbox = -1;
wack_alarm(PRINT, "Spread join on reconnect failed [%d].", ret);
handle_reconnect(0, NULL);
return;
}
} else {
wack_alarm(PRINT, "Spread connect failed [%d].", ret);
handle_reconnect(0, NULL);
return;
}
/* State initializations */
State = BOOT;
Old_maturity = 0;
Maturity = 0;
E_queue( Turn_mature, 0, 0, Maturity_timeout );
My.num_allocated = 0;
strcpy(My.private_group_name, Private_group);
E_attach_fd( Mbox, READ_FD, Handle_network, 0, NULL, HIGH_PRIORITY );
E_set_active_threshold( HIGH_PRIORITY );
}
void join_server(char *server_id)
{
int ret;
struct chat_packet *c;
struct chat_packet *r;
char mess[MAX_MESSLEN];
char sender[MAX_GROUP_NAME];
char target_groups[MAX_MEMBERS][MAX_GROUP_NAME];
membership_info memb_info;
vs_set_info vssets[MAX_VSSETS];
unsigned int my_vsset_index;
int num_vs_sets;
char members[MAX_MEMBERS][MAX_GROUP_NAME];
int num_groups;
int service_type=0;
int16 mess_type;
int endian_mismatch;
char group[80];
c = (struct chat_packet *)calloc(1,sizeof(struct chat_packet));
r = (struct chat_packet *)calloc(1,sizeof(struct chat_packet));
c->type = 2;//Request to join server
strncpy(c->text, Private_group, strlen(Private_group));
c->server_id = atoi(server_id);
//printf("Sending private grup %s to server", Private_group);
strncpy(c->client_group, Private_group, MAX_GROUP_NAME);
/* Send Message */
if (connected > 0)
{
/*Leave current group*/
sprintf(group, "c%d", connected);
SP_leave(Mbox, group);
}
/* ret = SP_multicast(Mbox, AGREED_MESS, server_id, 2, sizeof(struct chat_packet), (char *)c); */
/* That was the old way. New way is join the server group */
sprintf(group, "c%d", atoi(server_id));
ret = SP_join(Mbox, group);
connected = atoi(server_id); /*Set connected. Note we still need response from server, but we need to pass this to the recv connect */
if( ret < 0 )
{
SP_error( ret );
}
}
void setup(struct initializers *i) {
/* Sets up all ports */
/* and waits for the start_mcast message to start the actual process */
int mcast_addr;
int start = 0;
int bytes;
int num, c, num_groups, r, ret;
int service_type = 0;
int responded=0;
int16 mess_type;
int endian_mismatch=0;
int response[10];
struct timeval timeout;
unsigned char ttl_val;
char target_groups[MAX_MEMBERS][MAX_GROUP_NAME];
char logfilename[10];
char sender[MAX_GROUP_NAME];
char groups[10][MAX_GROUP_NAME];
char mess_buf[MAX_MESS_LEN];
sp_time test_timeout;
struct packet_structure *p=malloc(sizeof(struct packet_structure));
snprintf(logfilename, 10, "%d.out", machine_index);
logfile = fopen(logfilename, "w");
ret = SP_connect_timeout( Spread_name, User, 0, 1, &Mbox, Private_group, test_timeout );
if( ret != ACCEPT_SESSION )
{
SP_error( ret );
Bye();
}
printf("User: connected to %s with private group %s\n", Spread_name, Private_group );
E_init();
ret = SP_join(Mbox, group); printf("Join group %s:%d\n", group, ret);
if (machine_index == 1) {
for (c=1; c <= total_machines; c++) {
response[c] = 0;
completed[c] = 0;
}
/* Collect up the users, and send start message when everyone is in the group */
response[1]=1;
while (responded < 1) {
ret = SP_receive( Mbox, &service_type, sender, 100, &num_groups, target_groups,
&mess_type, &endian_mismatch, sizeof(mess_buf), mess_buf );
p = (struct packet_structure *)mess_buf;
if (p->type == 4) {
printf("ret = %d Got machine id %d\n", ret, p->machine_index);
/* Add this machine to the array and check to see if we are done */
response[p->machine_index] = 1;
printf("Got response from %d\n", p->machine_index);
r = 1;
for (c=1; c <= total_machines; c++) {
if (response[c] == 0) r =0;
}
if (r==1) responded = 1;
}
else if (p->type == 3 && machine_index == 1)
{
completed[p->machine_index] = 1;
}
}
/* Send start sending message to everyone */
if (r=1) /*All ready */ {
p->type= 2; printf("Ready to go..\n");
ret= SP_multicast( Mbox, AGREED_MESS, group, 1, sizeof(struct packet_structure), (char *)p );
}
}
else { /*We are not machine index 1*/
/*Send ready to begin message */
p->type = 4;
p->machine_index = machine_index;
ret= SP_multicast( Mbox, AGREED_MESS, group, 1, sizeof(struct packet_structure), (char *)p );
printf("Join=%d, group %s\n", ret, group);
if( ret < 0 )
{
SP_error( ret );
Bye();
}
else
{
printf("Sent: %d\n", ret);
}
}
};
static void User_command()
{
char command[130];
char mess[MAX_MESSLEN];
char group[80];
char groups[10][MAX_GROUP_NAME];
int num_groups;
unsigned int mess_len;
int ret;
int i;
for( i=0; i < sizeof(command); i++ ) command[i] = 0;
if( fgets( command, 130, stdin ) == NULL )
Bye();
switch( command[0] )
{
case 'j':
ret = sscanf( &command[2], "%s", group );
if( ret < 1 )
{
printf(" invalid group \n");
break;
}
ret = SP_join( Mbox, group );
if( ret < 0 ) SP_error( ret );
break;
case 'l':
ret = sscanf( &command[2], "%s", group );
if( ret < 1 )
{
printf(" invalid group \n");
break;
}
ret = SP_leave( Mbox, group );
if( ret < 0 ) SP_error( ret );
break;
case 's':
num_groups = sscanf(&command[2], "%s%s%s%s%s%s%s%s%s%s",
groups[0], groups[1], groups[2], groups[3], groups[4],
groups[5], groups[6], groups[7], groups[8], groups[9] );
if( num_groups < 1 )
{
printf(" invalid group \n");
break;
}
printf("enter message: ");
if (fgets(mess, 200, stdin) == NULL)
Bye();
mess_len = strlen( mess );
#ifdef _REENTRANT
#ifdef __bsdi__ /* bsdi bug - doing a close when another thread blocks on the socket causes a seg fault */
ret = send( Mbox, mess, 0, 0 );
if( ret < 0 )
{
SP_error( CONNECTION_CLOSED );
Bye();
}
#endif /* __bsdi__ */
#endif /* _REENTRANT */
ret= SP_multigroup_multicast( Mbox, SAFE_MESS, num_groups, (const char (*)[MAX_GROUP_NAME]) groups, 1, mess_len, mess );
if( ret < 0 )
{
SP_error( ret );
Bye();
}
Num_sent++;
break;
case 'b':
ret=sscanf( &command[2], "%s", group );
if( ret != 1 ) strcpy( group, "dummy_group_name" );
printf("enter size of each message: ");
if (fgets(mess, 200, stdin) == NULL)
Bye();
ret=sscanf(mess, "%u", &mess_len );
if( ret !=1 ) mess_len = Previous_len;
if( mess_len > MAX_MESSLEN ) mess_len = MAX_MESSLEN;
Previous_len = mess_len;
printf("sending 10 messages of %u bytes\n", mess_len );
for( i=0; i<10; i++ )
{
Num_sent++;
sprintf( mess, "mess num %d ", Num_sent );
#ifdef _REENTRANT
#ifdef __bsdi__ /* bsdi bug - doing a close when another thread blocks on the socket causes a seg fault */
ret = send( Mbox, mess, 0,0 );
if( ret < 0 )
{
SP_error( CONNECTION_CLOSED );
Bye();
}
#endif /* __bsdi__ */
#endif /* _REENTRANT */
ret= SP_multicast( Mbox, FIFO_MESS, group, 2, mess_len, mess );
if( ret < 0 )
{
SP_error( ret );
Bye();
}
printf("sent message %d (total %d)\n", i+1, Num_sent );
}
break;
#ifndef _REENTRANT
case 'r':
Read_message();
break;
case 'p':
ret = SP_poll( Mbox );
printf("Polling sais: %d\n", ret );
break;
case 'e':
E_attach_fd( Mbox, READ_FD, Read_message, 0, NULL, HIGH_PRIORITY );
break;
case 'd':
E_detach_fd( Mbox, READ_FD );
break;
#endif /* _REENTRANT */
case 'q':
Bye();
break;
default:
printf("\nUnknown commnad\n");
Print_menu();
break;
}
printf("\nUser> ");
fflush(stdout);
}
int main( int argc, char *argv[] )
{
int ret;
int service_type, num_groups;
char sender[MAX_GROUP_NAME];
int16 mess_type;
int dummy_endian_mismatch;
int joined_members;
int sender_index;
int i,j;
Usage( argc, argv );
if (Num_members == 0) {
/* connecting to the relevant Spread daemon, no need for group info */
printf("flooder: connecting to %s\n", Spread_name );
ret = SP_connect( Spread_name, User, 0, 0, &Mbox, Private_group ) ;
} else {
/* connecting to the relevant Spread daemon, DO need group info */
printf("flooder: connecting to %s with group membership\n", Spread_name );
ret = SP_connect( Spread_name, User, 0, 1, &Mbox, Private_group ) ;
}
if(ret < 0)
{
SP_error( ret );
exit(1) ;
}
/*
* Joining the process group.
*
* Note that this is not necessary in order to multicast the
* messages, but only to demonstrate end-to-end behaviour.
*/
if( Read_only )
{
printf("flooder: Only receiving messages\n");
SP_join( Mbox, "flooder" );
}else if( Write_only ) {
printf("flooder: starting multicast of %d messages, %d bytes each (self discarding).\n", Num_messages, Num_bytes);
}else{
SP_join( Mbox, "flooder" );
printf("flooder: starting multicast of %d messages, %d bytes each.\n", Num_messages, Num_bytes);
}
/* Wait for all members to join */
joined_members = 0;
while( joined_members < Num_members)
{
service_type = 0;
ret = SP_receive( Mbox, &service_type, sender, FLOODER_MAX_GROUPS, &num_groups, ret_groups,
&mess_type, &dummy_endian_mismatch, sizeof(recv_mess), recv_mess );
if( ret < 0 )
{
if ( (ret == GROUPS_TOO_SHORT) || (ret == BUFFER_TOO_SHORT) ) {
printf("\n========Buffers or Groups too Short=======\n");
printf("Should NOT happen in wait for members! Program quitting\n");
exit(1);
}
}
if( Is_regular_mess( service_type ) )
{
mess[ret] = 0;
if ( Is_unreliable_mess( service_type ) ) printf("received UNRELIABLE ");
else if( Is_reliable_mess( service_type ) ) printf("received RELIABLE ");
else if( Is_fifo_mess( service_type ) ) printf("received FIFO ");
else if( Is_causal_mess( service_type ) ) printf("received CAUSAL ");
else if( Is_agreed_mess( service_type ) ) printf("received AGREED ");
else if( Is_safe_mess( service_type ) ) printf("received SAFE ");
printf("message during wait for members, from %s, of type %d, (endian %d) to %d groups \n(%d bytes): %s\n",
sender, mess_type, dummy_endian_mismatch, num_groups, ret, recv_mess );
}else if( Is_membership_mess( service_type ) )
{
if ( Is_reg_memb_mess( service_type ) )
{
printf("Received REGULAR membership for group %s with %d members, where I am member %d:\n",
sender, num_groups, mess_type );
for( i=0; i < num_groups; i++ )
printf("\t%s\n", &ret_groups[i][0] );
/* update count of joined members */
joined_members = num_groups;
}else if( Is_transition_mess( service_type ) ) {
printf("received TRANSITIONAL membership for group %s\n", sender );
}else if( Is_caused_leave_mess( service_type ) ){
printf("received membership message that left group %s\n", sender );
}else printf("received incorrecty membership message of type 0x%x\n", service_type );
} else if ( Is_reject_mess( service_type ) )
{
printf("REJECTED message from %s, of servicetype 0x%x messtype %d, (endian %d) to %d groups \n(%d bytes): %s\n",
sender, service_type, mess_type, dummy_endian_mismatch, num_groups, ret, recv_mess );
}else printf("received message of unknown message type 0x%x with ret %d\n", service_type, ret);
} /* joined_members < Num_members */
/* Update My_Counter_index field based on location of my name in last membership message */
if (Num_members)
{
My_Counter_index = mess_type;
memcpy(&mess[0], &My_Counter_index, sizeof(int));
}
for( i=1; i <= Num_messages; i++ )
{
/* multicast a message unless Read_only */
if( !Read_only )
{
if (Num_members)
{
ret = SP_multicast( Mbox, FIFO_MESS, "flooder", 0, Num_bytes, mess );
Send_Counter++;
} else {
ret = SP_multicast( Mbox, RELIABLE_MESS, "flooder", 0, Num_bytes, mess );
}
if( ret != Num_bytes )
{
if( ret < 0 )
{
SP_error( ret );
exit(1);
}
printf("sent a different message %d -> %d\n", Num_bytes, ret );
}
}
/* receive a message (Read_only) or one of my messages */
if( Read_only || ( i > 200 && !Write_only ) )
{
int notdone;
do{
service_type = 0;
ret = SP_receive( Mbox, &service_type, sender, FLOODER_MAX_GROUPS, &num_groups, ret_groups,
&mess_type, &dummy_endian_mismatch, sizeof(recv_mess), recv_mess );
if( ret < 0 )
{
if ( (ret == GROUPS_TOO_SHORT) || (ret == BUFFER_TOO_SHORT) ) {
service_type = DROP_RECV;
printf("\n========Buffers or Groups too Short=======\n");
ret = SP_receive( Mbox, &service_type, sender, FLOODER_MAX_GROUPS, &num_groups, ret_groups,
&mess_type, &dummy_endian_mismatch, sizeof(recv_mess), recv_mess );
}
}
if( ret < 0 )
{
SP_error( ret );
exit(1);
}
if (Num_members) {
/* update counters of received messages */
memcpy(&sender_index, &recv_mess[0], sizeof(int));
Recv_Counters[sender_index]++;
/*
printf("DEBUG: updated counter %d to value %d\n", sender_index, Recv_Counters[sender_index]);
*/
if (Recv_Counters[sender_index] == (Lowest_Recv_Counter + 1)) {
/* Update Lowest_Recv_Counter */
Lowest_Recv_Counter = INT_MAX;
for (j=0; j < Num_members; j++) {
if (Recv_Counters[j] == 0) continue;
if (Recv_Counters[j] < Lowest_Recv_Counter)
Lowest_Recv_Counter = Recv_Counters[j];
}
if (Lowest_Recv_Counter == INT_MAX)
Lowest_Recv_Counter = 0;
}
/* Read loop is done if we send messages and we have received all
* other senders messages upto 100 less then our current send count
*/
notdone = ( Lowest_Recv_Counter < (Send_Counter - 200) && !Read_only );
} else {
notdone = (strcmp( sender, Private_group ) != 0 && !Read_only);
}
} while( notdone );
}
/* report some progress... */
if( i%1000 == 0 ) printf("flooder: completed %6d messages of %d bytes\n",i, ret);
}
printf("flooder: completed multicast of %d messages, %d bytes each.\n", Num_messages, Num_bytes);
return 0;
}
static void User_command()
{
char command[130];
char client_group[13];
char mess[SPREAD_MESS_LEN];
char group[MAX_ROOM_LEN - strlen("CR#_")];
char groups[10][MAX_GROUP_NAME];
int num_groups;
unsigned int mess_len;
int ret;
int srv;
int i;
for( i=0; i < sizeof(command); i++ ) command[i] = 0;
if( fgets( command, 130, stdin ) == NULL )
Bye();
switch( command[0] )
{
case 'u':
ret = sscanf( &command[2], "%s", u_id);
if (ret < 1 )
printf("invalid username\n");
break;
case 'c':
ret = sscanf( &command[2], "%d", &srv);
if ( ret < 1 || isValidServer(srv) != 1) { //isValid sets server_num
printf("invalid server index\n");
break;
}
ret = sprintf( client_group, "client_group%d",server_num);
if (ret < 1) {
printf("Error connecting to server-client group\n");
break;
}
ret = SP_join(Mbox, client_group);
if (ret < 0) SP_error( ret );
sprintf( server_priv_group, "server%d", server_num);
break;
case 'j':
//check if already in room
if (strlen(chatroom) > 0) {
clear_room(chatroom);
}
else {
ret = sscanf( &command[2], "%s", chatroom );
if( ret < 1 ) {
printf(" invalid chatroom name \n");
break;}
add_room(chatroom);
}
if (strlen(u_id) > 0 && isValidServer(server_num)) { //need valid username + server for chatroom
ret = sprintf ( group, "%s%d_%s","CR",server_num,chatroom);
if (ret < 1) {
printf("Error creating chatroom name <%s> from group <%s>\n",chatroom,group);
break;
}
ret = SP_join( Mbox, group ); //join CR#_<group> spread group
if( ret < 0 ) SP_error( ret );
}
else {
printf("Invalid username or server number, cannot join chatroom\n"); break;}
join_chatroom* send = (join_chatroom*)mess;
send->type = TYPE_JOIN_CHATROOM;
send->source = SOURCE_CLIENT;
strncpy(send->u_id,u_id,MAX_NAME_LEN);
strncpy(send->chatroom,chatroom,MAX_ROOM_LEN); //send <group> as chatroom spread name
ret = SP_multicast( Mbox, AGREED_MESS, server_priv_group, 1, sizeof(join_chatroom), mess );
if( ret < 0 )
{
SP_error( ret );
Bye();
}
break;
/*
case 'x':{
char ms[6];
add_room(chatroom);
set_max_msgs(25);
int maxi = 40;
for (int i = 1; i <= maxi;i++) {
struct lamport* ts = malloc(sizeof(lamport));
ts->server_id = 1;
ts->index = i;
sprintf(ms,"%s%d","asdfd",i);
add_message(ts,u_id,chatroom,ms);
if (i % 3 == 0 || i % 4 == 1 || i % 6 == 2) {
i++; maxi++;
struct lamport* ls = malloc(sizeof(lamport));
ls->server_id = 1;
ls->index = i;
add_like(LIKE,ls,u_id,chatroom,ts);
if (i % 6 == 2){
i++;maxi++;
char newu[MAX_NAME_LEN];
sprintf(newu,"%sx",u_id);
struct lamport* qs = malloc(sizeof(lamport));
qs->server_id = 1;
qs->index = i;
add_like(LIKE,qs,newu,chatroom,ts);
}
}
if (i % 4 == 1) {
i++; maxi++;
struct lamport* ls = malloc(sizeof(lamport));
ls->server_id = 1;
ls->index = i;
add_like(UNLIKE,ls,u_id,chatroom,ts);
}
}
printf("== %s ==\n",chatroom);
print_room(chatroom);
break;}
*/
case 'a': {
char text[MAX_MESS_LEN];
printf("enter message: ");
if (fgets(text, MAX_MESS_LEN, stdin) == NULL)
Bye();
if (strlen(chatroom) < 1){
printf("Please join a chatroom\n");
break;
}
message* dat = (message*)mess;
dat->type = TYPE_SEND_MSG;
dat->source = SOURCE_CLIENT;
strncpy(dat->u_id,u_id,MAX_NAME_LEN);
strncpy(dat->chatroom,chatroom,MAX_ROOM_LEN);
strncpy(dat->mess,text,MAX_MESS_LEN);
ret= SP_multicast( Mbox, AGREED_MESS, server_priv_group, 1, sizeof(message), mess );
if( ret < 0 )
{
SP_error( ret );
Bye();
}
break;
}
case 'l':
{
if (strlen(chatroom) < 1){
printf("Please join a chatroom\n");
break;}
int linenum;
ret = sscanf( &command[2], "%d", &linenum );
printf("Liking line %d.....\n",linenum);
if( ret < 1 ) {
printf(" invalid linenum \n");
break;}
lamport* stamp = get_msg_stamp(linenum);
printf("%d. index %d?\n",linenum,stamp->index);
like* dat = (like*)mess;
dat->type = TYPE_LIKE_MSG;
dat->source = SOURCE_CLIENT;
dat->msg_timestamp.server_id = stamp->server_id;
dat->msg_timestamp.index = stamp->index;
strncpy(dat->u_id,u_id,MAX_NAME_LEN);
strncpy(dat->chatroom,chatroom,MAX_ROOM_LEN);
dat->like_state = LIKE;
ret = SP_multicast( Mbox, AGREED_MESS, server_priv_group, 1, sizeof(like), mess);
if (ret < 0) {
SP_error(ret); Bye; }
break;
}
case 'r':
{
if (strlen(chatroom) < 1){
printf("Please join a chatroom\n");
break;}
int linenum;
ret = sscanf( &command[2], "%d", linenum );
if( ret < 1 ) {
printf(" invalid linenum \n");
break;}
lamport* stamp = get_msg_stamp(linenum);
printf("%d. index %d?\n",linenum,stamp->index);
like* dat = (like*)mess;
dat->type = TYPE_LIKE_MSG;
dat->source = SOURCE_CLIENT;
dat->msg_timestamp.server_id = stamp->server_id;
dat->msg_timestamp.index = stamp->index;
strncpy(dat->u_id,u_id,MAX_NAME_LEN);
strncpy(dat->chatroom,chatroom,MAX_ROOM_LEN);
dat->like_state = UNLIKE;
ret = SP_multicast( Mbox, AGREED_MESS, server_priv_group, 1, sizeof(like), mess);
if (ret < 0) {
SP_error(ret); Bye; }
break;
}
case 'h':
printf("history not implemented\n");
break;
case 'v':
printf("network view not implemented\n");
break;
case 'q':
Bye();
break;
default:
printf("\nUnknown commnad\n");
Print_menu();
break;
}
printf(" \n > ");
fflush(stdout);
}
void recv_server_msg(struct chat_packet *c, int16 mess_type) {
int ret;
struct node *temp, *temp2;
if (mess_type == 0) { // If the mess_type is 0, that means we already have the chat_packet, we just want to update the likes.
temp = chatroom_start->next;
while (temp != NULL) {
if (temp->data->sequence == c->sequence) {
temp->data->num_likes = c->num_likes;
break;
}
temp = temp->next;
}
refresh_display();
}
else if (mess_type == 13) {
temp = chatroom_start;
int count= 0;
/* We need to put the merged chats in the correct order */
while (temp->next != NULL) {
temp->next->sequence = count;/* for resequencing*/
if (c->sequence == temp->next->data->sequence)
{
/*already received this LTS, so don't add it. */
break;
}
else if (c->sequence < temp->next->data->sequence)
{
temp2 = temp->next;
temp->next = (struct node *)calloc(1,sizeof(struct node));
temp->next->data = (struct chat_packet *)calloc(1, sizeof(struct chat_packet));
memcpy(temp->next->data, c, sizeof(struct chat_packet));
temp->next->sequence = count;
temp->next->previous = temp; /*Double link list added for traversal on 25 chat lines */
temp2->previous = temp->next;
temp->next->next = temp2;
break;
}
temp = temp->next;
}
if (temp->next == NULL) /*We are at the end, so add the message */
{
temp2 = temp->next;
temp->next = (struct node *)calloc(1,sizeof(struct node));
temp->next->data = (struct chat_packet *)calloc(1,sizeof(struct chat_packet));
memcpy(temp->next->data, c, sizeof(struct chat_packet));
temp->next->sequence = count;
temp->next->previous = temp; /*Double link list added for traversal on 25 chat lines */
temp->next->next = temp2;
chatroom_latest = temp->next; /*set latest to this new packet */
}
/*Renumber */
temp = chatroom_start;
while (temp->next !=NULL)
{
count++;
temp->next->sequence = count;
temp = temp->next;
}
line_number = count;
refresh_display();
//print_after(c->sequence); /*Print out where we added the packet (for dispaly consistency)*/
}
else if (c->type == 0 || c->type == 3) /*Message packet */
{
if (c->type == 0) line_number++; /*Only update line number on text message */
chatroom_latest->next = (struct node *)calloc(1,sizeof(struct node));
chatroom_latest->next->previous = chatroom_latest;
chatroom_latest = chatroom_latest->next; /*Advance the pointer */
chatroom_latest->data = (struct chat_packet *)calloc(1,sizeof(struct chat_packet));
chatroom_latest->sequence = line_number;
memcpy(chatroom_latest->data, c, sizeof(struct chat_packet));
if (c->type == 0) /* Live message, display it */
{
refresh_display();
}
}
else if (c->type == 2)
{
printf("Successful connection to server %d\n>", c->server_id);
connected = c->server_id;
}
else if (c->type == 5) /* Received response to join group */
{
ret = SP_join( Mbox, c->group );
if( ret < 0 ) SP_error( ret );
bzero(chatroom, MAX_GROUP_NAME);
strncpy(chatroom, c->group, strlen(c->group)-1); /*Remove server id from chatroom group name */
chatroom_start = (struct node *)calloc(1, sizeof(struct node));
chatroom_latest = chatroom_start;
printf("Successfully joined group %s\n>", chatroom); /* don't display server index at end of group */
line_number = 0; /*Refresh line number */
}
else if (c->type == 6) /*Refresh screen all after lamport timestamp */ /*No longer necessary*/
{
struct node *i;
i = chatroom_start->next; /* Setup iterator */
line_number = 0;
while ((i !=NULL) && ((i->data->sequence != c->sequence) || (i->data->server_id != c->server_id)))
{ line_number++;
i = i->next;
}
while (i != NULL)
{
line_number++;
printf("%d:%s> %s",line_number, i->data->name, i->data->text);
}
}
else if (c->type == 8) /*Display servers online */
{
printf("Servers that are online are: %s\n>", c->text);
}
else if (c->type == 9) /*Updated name list for chatroom */
{
bzero(attendees, 80);
strncpy(attendees, c->text, strlen(c->text));
//printf("Members in chatroom are now: %s\n>", c->text); Moved to display.
refresh_display();
}
}
