143 lines
3.2 KiB
C
143 lines
3.2 KiB
C
/* proto.c Copyright Michael Temari 08/01/1996 All Rights Reserved */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <net/hton.h>
|
|
#include <net/gen/socket.h>
|
|
#include <net/gen/in.h>
|
|
#include <net/gen/inet.h>
|
|
#include <net/gen/tcp.h>
|
|
#include <net/gen/udp.h>
|
|
|
|
#include "talk.h"
|
|
#include "proto.h"
|
|
#include "net.h"
|
|
#include "screen.h"
|
|
|
|
_PROTOTYPE(static int TalkChk, (int gotreply, struct talk_reply *reply, char *msg));
|
|
_PROTOTYPE(static int TalkTrans, (int type, long id, struct talk_reply *reply, int here));
|
|
|
|
static char *AnswerMsgs[] = {
|
|
"Success",
|
|
"User Not Logged In",
|
|
"Failure",
|
|
"Remote Does Not Know who we are",
|
|
"User is not accepting calls",
|
|
"Are request was not know",
|
|
"Incorrect Version",
|
|
"Bad Address",
|
|
"Bad Control Address"
|
|
};
|
|
|
|
static int TalkChk(gotreply, reply, msg)
|
|
int gotreply;
|
|
struct talk_reply *reply;
|
|
char *msg;
|
|
{
|
|
if(!gotreply) {
|
|
ScreenMsg(msg);
|
|
return(-1);
|
|
}
|
|
if(reply->answer == SUCCESS) return(0);
|
|
if(reply->answer < (sizeof(AnswerMsgs) / sizeof(AnswerMsgs[0])))
|
|
ScreenMsg(AnswerMsgs[reply->answer]);
|
|
else
|
|
ScreenMsg("Bad Answer");
|
|
|
|
return(-1);
|
|
}
|
|
|
|
static int TalkTrans(type, id, reply, here)
|
|
int type;
|
|
long id;
|
|
struct talk_reply *reply;
|
|
int here;
|
|
{
|
|
struct talk_request request;
|
|
int tries;
|
|
int gotreply;
|
|
|
|
memset(&request, 0, sizeof(request));
|
|
|
|
request.version = TALK_VERSION;
|
|
request.type = type;
|
|
request.id = id;
|
|
request.addr.sa_family = htons(AF_INET);
|
|
request.addr.sin_port = dataport;
|
|
request.addr.sin_addr = laddr;
|
|
request.ctl_addr.sa_family = htons(AF_INET);
|
|
request.ctl_addr.sin_port = ctlport;
|
|
request.ctl_addr.sin_addr = laddr;
|
|
request.pid = getpid();
|
|
strncpy(request.luser, luser, USER_SIZE);
|
|
strncpy(request.ruser, ruser, USER_SIZE);
|
|
strncpy(request.rtty, rtty, TTY_SIZE);
|
|
|
|
tries = 0;
|
|
gotreply = 0;
|
|
while(!ScreenDone && tries++ < 3 && !gotreply) {
|
|
if(!sendrequest(&request, here))
|
|
if(!getreply(reply, 5))
|
|
gotreply = 1;
|
|
if(!gotreply) continue;
|
|
if(reply->version != request.version ||
|
|
reply->type != request.type)
|
|
gotreply = 0;
|
|
}
|
|
return(gotreply);
|
|
}
|
|
|
|
int TalkInit()
|
|
{
|
|
struct talk_reply reply;
|
|
long id = 0;
|
|
long rid;
|
|
int s;
|
|
int ring;
|
|
char buff[32];
|
|
|
|
/* Check if someone was calling us */
|
|
ScreenMsg("Initiating Talk Protocol");
|
|
|
|
/* Check is someone was calling us */
|
|
s = TalkTrans(LOOK_UP, ++id, &reply, 0);
|
|
|
|
/* Someone was calling us */
|
|
if(s && reply.answer == SUCCESS) {
|
|
s = NetConnect(reply.addr.sin_port);
|
|
if(s == 1) {
|
|
ScreenMsg("Your party has hung up");
|
|
TalkTrans(DELETE, reply.id, &reply, 0);
|
|
}
|
|
return(s == 0 ? 0 : -1);
|
|
}
|
|
|
|
ScreenMsg("Ringing User");
|
|
|
|
ring = 0;
|
|
while(!ScreenDone && ring++ < 5) {
|
|
if(TalkChk(TalkTrans(ANNOUNCE, -1, &reply, 0),
|
|
&reply, "No response to are ring"))
|
|
return(-1);
|
|
rid = reply.id;
|
|
sprintf(buff, "Ring #%d", ring);
|
|
ScreenMsg(buff);
|
|
if(ring == 1) {
|
|
if(TalkChk(TalkTrans(LEAVE_INVITE, ++id, &reply, 1),
|
|
&reply, "Could not leave are invitaion locally"))
|
|
return(-1);
|
|
}
|
|
s = NetListen(RING_WAIT);
|
|
if(s <= 0) {
|
|
TalkTrans(DELETE, reply.id, &reply, 1);
|
|
TalkTrans(DELETE, rid, &reply, 0);
|
|
return(s);
|
|
}
|
|
}
|
|
|
|
return(-1);
|
|
}
|