int sr_connect_to_server(struct sr_instance* sr,unsigned short port,
char* server)
{
#ifndef VNL
struct hostent *hp;
#endif
c_open command;
c_open_template ot;
char* buf;
uint32_t buf_len;
/* REQUIRES */
assert(sr);
assert(server);
/* purify UMR be gone ! */
memset((void*)&command,0,sizeof(c_open));
#ifdef VNL
sr->vc = vnl_open(sr->topo_id,sr->host);
#else
/* zero out server address struct */
memset(&(sr->sr_addr),0,sizeof(struct sockaddr_in));
sr->sr_addr.sin_family = AF_INET;
sr->sr_addr.sin_port = htons(port);
/* grab hosts address from domain name */
if ((hp = gethostbyname(server))==0)
{
perror("gethostbyname:sr_client.c::sr_connect_to_server(..)");
return -1;
}
/* set server address */
memcpy(&(sr->sr_addr.sin_addr),hp->h_addr_list[0],hp->h_length);
/* create socket */
if ((sr->sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
{
perror("socket(..):sr_client.c::sr_connect_to_server(..)");
return -1;
}
/* attempt to connect to the server */
if (connect(sr->sockfd, (struct sockaddr *)&(sr->sr_addr),
sizeof(sr->sr_addr)) < 0)
{
perror("connect(..):sr_client.c::sr_connect_to_server(..)");
close(sr->sockfd);
return -1;
}
#endif
/* wait for authentication to be completed (server sends the first message) */
if(sr_read_from_server_expect(sr, VNS_AUTH_REQUEST)!= 1 ||
sr_read_from_server_expect(sr, VNS_AUTH_STATUS) != 1)
return -1; /* failed to receive expected message */
if(strlen(sr->template) > 0) {
int sr_vns_read_from_server(struct sr_instance* sr /* borrowed */)
{
return sr_read_from_server_expect(sr, 0);
}/* -- sr_vns_read_from_server -- */
int sr_vns_connect_to_server(struct sr_instance* sr,unsigned short port,
const char* server)
{
struct hostent *hp;
c_open command;
c_open_template ot;
char* buf;
uint32_t buf_len;
/* REQUIRES */
assert(sr);
assert(server);
if ( sr_vns_connected_to_server(sr) )
{ return -1; }
/* purify UMR be gone ! */
memset((void*)&command,0,sizeof(c_open));
/* zero out server address struct */
memset(&(sr->sr_addr),0,sizeof(struct sockaddr_in));
sr->sr_addr.sin_family = AF_INET;
sr->sr_addr.sin_port = htons(port);
/* grab hosts address from domain name */
if ((hp = gethostbyname(server))==0)
{
perror("gethostbyname:sr_client.c::sr_connect_to_server(..)");
return -1;
}
/* set server address */
memcpy(&(sr->sr_addr.sin_addr),hp->h_addr,hp->h_length);
/* create socket */
if ((sr->sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
{
perror("socket(..):sr_client.c::sr_connect_to_server(..)");
return -1;
}
/* attempt to connect to the server */
if (connect(sr->sockfd, (struct sockaddr *)&(sr->sr_addr),
sizeof(sr->sr_addr)) < 0)
{
perror("connect(..):sr_vns.c::sr_connect_to_server(..)");
close(sr->sockfd);
return -1;
}
fprintf(stderr, "waiting for expected messages ...\n");
/* wait for authentication to be completed (server sends the first message) */
if(sr_read_from_server_expect(sr, VNS_AUTH_REQUEST)!= 1 ||
sr_read_from_server_expect(sr, VNS_AUTH_STATUS) != 1)
return -1; /* failed to receive expected message */
fprintf(stderr, "got expected messages ...\n");
if(strlen(sr->template_name) > 0) {
/* send VNS_OPEN_TEMPLATE message to server */
ot.mLen = htonl(sizeof(c_open_template));
ot.mType = htonl(VNS_OPEN_TEMPLATE);
strncpy(ot.templateName, sr->template_name, 30);
strncpy(ot.mVirtualHostID, sr->vhost, IDSIZE);
/* no source filters specified */
buf = (char*)&ot;
buf_len = sizeof(ot);
}
else {
/* send sr_OPEN message to server */
command.mLen = htonl(sizeof(c_open));
command.mType = htonl(VNSOPEN);
command.topoID = htons(sr->topo_id);
strncpy( command.mVirtualHostID, sr->vhost, IDSIZE);
strncpy( command.mUID, sr->user, IDSIZE);
buf = (char*)&command;
buf_len = sizeof(command);
}
if(send(sr->sockfd, buf, buf_len, 0) != (int32_t)buf_len)
{
perror("send(..):sr_client.c::sr_connect_to_server()");
return -1;
}
if(strlen(sr->template_name) > 0)
if(sr_read_from_server_expect(sr, VNS_RTABLE) != 1)
return -1; /* needed to get the rtable */
return 0;
} /* -- sr_connect_to_server -- */
