From 058c06c0b8b2dbbde5ee32b54ad8e502527cd155 Mon Sep 17 00:00:00 2001
From: hackbard <hackbard>
Date: Tue, 4 May 2004 07:41:26 +0000
Subject: [PATCH] implemented network_{receive,send} & {receive,send}_info

---
 src/inet.c | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 src/inet.h |  11 ++++++
 2 files changed, 114 insertions(+), 2 deletions(-)

diff --git a/src/inet.c b/src/inet.c
index 255423d..99f83d1 100644
--- a/src/inet.c
+++ b/src/inet.c
@@ -13,6 +13,8 @@ int network_init(t_ivac *ivac) {
   puts("[ivac] inet: initializing network ...");
 
   memset(ivac->net.connection,0,MAX_CONNECTIONS*sizeof(t_connection));
+  ivac->net.c_count=0;
+  ivac->net.sendmask=0;
 
   if((ivac->net.l_fd=socket(AF_INET,SOCK_STREAM,0))==-1) {
     perror("[ivac] inet.c: socket call");
@@ -46,7 +48,10 @@ int network_manage_connection(t_ivac *ivac) {
     if(ivac->net.connection[i].status&C_IN_USE) {
 
       if(ivac->net.connection[i].status&C_HANGUP) {
-        close(ivac->net.connection[i].fd);
+        if(close(ivac->net.connection[i].fd)==-1) {
+          perror("[ivac] inet.c: close call");
+          return ERROR;
+        }
         ivac->net.connection[i].status=0;
       }
 
@@ -83,8 +88,104 @@ int network_manage_connection(t_ivac *ivac) {
   return SUCCESS;
 }
  
-int network_send(unsigned char *data,int datasize,int sendmask,t_ivac *ivac) {
+int network_send(int fd,unsigned char *data,int datasize) {
+
+  int count,left;
+
+  count=0;
+  left=datasize;
+
+  while(left) {
+    if((count=write(fd,data+datasize-left,left))==-1) {
+      perror("[ivac] inet.c: write call");
+      return ERROR;
+    }
+    left-=count;
+  }
+
+  return SUCCESS;
+}
+
+int network_receive(int fd,unsigned char *data,int datasize) {
+
+  int count,retval;
+
+  retval=1;
+  count=0;
+
+  while(retval) {
+    if((retval=read(fd,data+count,datasize-count))==-1) {
+      perror("[ivac] inet.c: read call");
+      return ERROR;
+    }
+    count+=retval;
+  }
+
+  return count;
+}
+
+int send_info(int fd,t_ivac *ivac) {
 
+  char data[SEND_I_MAX];
+  int size;
 
+  size=strlen(ivac->name);
+
+  data[0]=SEND_I_NAME;
+  data[1]=size;
+  strncpy(data+2,ivac->name,size);
+  size+=2;
+
+  data[size+1]=SEND_I_CAP;
+  data[size+2]=sizeof(unsigned char);
+  data[size+3]=ivac->net.cap;
+  size+=(sizeof(unsigned char)+2);
+
+  data[size+1]=SEND_I_AVCAP;
+  data[size+2]=sizeof(unsigned short);
+  data[size+2+sizeof(unsigned short)];
+  size+=(sizeof(unsigned short)+2);
+
+  if(network_send(fd,data,size)==ERROR) {
+    puts("[ivac] inet.c: send_info failed");
+    return ERROR;
+  }
+
+  return SUCCESS;
+}
+
+int receive_info(int i,t_ivac *ivac) {
+
+  char data[CHAR_USERNAME+2];
+  int count,length;
+
+  if((length=network_receive(ivac->net.connection[i].fd,
+                             data,SEND_I_MAX))==ERROR) {
+    puts("[ivac] inet.c: receive_info failed");
+    return ERROR;
+  }
+
+  while(length-count) {
+    switch(data[count]) {
+      case SEND_I_NAME:
+        strncpy(ivac->net.connection[i].name,data[count+2],data[count+1]);
+        ivac->net.connection[i].name[data[count+2]]='\0';
+        count+=(data[count+2]+2);
+        break;
+      case SEND_I_G_CAP:
+        ivac->net.connection[i].cap=data[count+4];
+        count+=(sizeof(unsigned char)+2);
+        break;
+      case SEND_I_AV_CAP:
+        ivac->net.connection[i].avcap=data[count+3]<<8;
+        ivac->net.connection[i].avcap|=data[count+4];
+        count+=(sizeof(unsigned short)+2);
+        break;
+      default:
+        puts("[ivac] inet.c: receive_info, unknown character");
+        return ERROR;
+    }
+  }
+    
   return SUCCESS;
 }
diff --git a/src/inet.h b/src/inet.h
index 7f949ac..e7c48b7 100644
--- a/src/inet.h
+++ b/src/inet.h
@@ -16,6 +16,7 @@
 
 /* defines */
 #define MAX_CONNECTIONS 32
+
 #define IP_DIGITS 16
 #define C_IN_USE (1<<0)
 #define C_INFO_A (1<<1)
@@ -23,6 +24,11 @@
 #define C_ESTABL (1<<3)
 #define C_HANGUP (1<<4)
 
+#define SEND_I_MAX 128
+#define SEND_I_NAME 'n'
+#define SEND_I_G_CAP 'g'
+#define SEND_I_AV_CAP 'c'
+
 /* net specific variables */
 typedef s_connection {
   int fd;
@@ -30,14 +36,19 @@ typedef s_connection {
   char ip[IP_DIGITS];
   in_port_t port;
   unsigned char status;
+  unsigned char cap; /* general capabilities */
+  unsigned short avcap; /* audio/video capabilities */
 } t_connection;
 
 typedef s_net {
   int l_fd; /* listen file descriptor */
   in_port_t l_port;
+  unsigned char cap;
+  unsigned short avcap;
   /* limited connections by now -- replaced by list management later */
   int c_count;
   t_connection connection[MAX_CONNECTIONS];
+  unsigned int sendmask; /* 32 bits for maximum of 32 connections */
 } t_net;
 
 #endif
-- 
2.20.1