* datagram.cpp
* serp++
*
- * Created by Victor Grishchenko on 3/9/09.
+ * Created by Victor Grishchenko, Arno Bakker on 3/9/09.
* Copyright 2009 Delft University of Technology. All rights reserved.
*
*/
typedef int socklen_t;
#else
#include <arpa/inet.h>
+ #include <netdb.h>
#endif
-#include <netdb.h>
+
#include "datagram.h"
#include "compat.h"
-namespace p2tp {
+namespace swift {
-tint Datagram::now = Datagram::Time()/360000000LL*360000000LL;
-tint Datagram::epoch = now;
+tint Datagram::now = Datagram::Time();
+tint Datagram::start = now;
+tint Datagram::epoch = now/360000000LL*360000000LL; // make logs mergeable
uint32_t Address::LOCALHOST = INADDR_LOOPBACK;
-uint64_t Datagram::dgrams_up=0, Datagram::dgrams_down=0,
+uint64_t Datagram::dgrams_up=0, Datagram::dgrams_down=0,
Datagram::bytes_up=0, Datagram::bytes_down=0;
+sckrwecb_t Datagram::sock_open[] = {};
+int Datagram::sock_count = 0;
const char* tintstr (tint time) {
if (time==0)
sprintf(ret_str[i],"%i_%02i_%02i_%03i_%03i",hours,mins,secs,msecs,usecs);
return ret_str[i];
}
-
+
void Address::set_ipv4 (const char* ip_str) {
struct hostent *h = gethostbyname(ip_str);
if (h == NULL) {
- print_error("cannot lookup address");
- return;
+ print_error("cannot lookup address");
+ return;
} else {
addr.sin_addr.s_addr = *(u_long *) h->h_addr_list[0];
}
}
-
-
+
+
Address::Address(const char* ip_port) {
clear();
- if (strlen(ip_port)>=32)
+ if (strlen(ip_port)>=1024)
return;
- char ipp[32];
- strncpy(ipp,ip_port,32);
+ char ipp[1024];
+ strncpy(ipp,ip_port,1024);
char* semi = strchr(ipp,':');
if (semi) {
*semi = 0;
}
}
}
+
+
+bool Datagram::Listen3rdPartySocket (sckrwecb_t cb) {
+ int i=0;
+ while (i<sock_count && sock_open[i].sock!=cb.sock) i++;
+ if (i==sock_count)
+ if (i==DGRAM_MAX_SOCK_OPEN)
+ return false;
+ else
+ sock_count++;
+ sock_open[i]=cb;
+ //if (!cb.may_read && !cb.may_write && !cb.on_error)
+ // sock_open[i] = sock_open[--sock_count];
+ return true;
+}
+
+void Datagram::Shutdown () {
+ while (sock_count--)
+ Close(sock_open[sock_count].sock);
+}
+
int Datagram::Send () {
- int r = sendto(sock,(const char *)buf+offset,length-offset,0,
- (struct sockaddr*)&(addr.addr),sizeof(struct sockaddr_in));
+ int r = sendto(sock,(const char *)buf+offset,length-offset,0,
+ (struct sockaddr*)&(addr.addr),sizeof(struct sockaddr_in));
if (r<0)
perror("can't send");
- //offset=0;
- //length=0;
dgrams_up++;
bytes_up+=size();
- Time();
- return r;
+ offset=0;
+ length=0;
+ Time();
+ return r;
}
int Datagram::Recv () {
- socklen_t addrlen = sizeof(struct sockaddr_in);
- offset = 0;
- length = recvfrom (sock, (char *)buf, MAXDGRAMSZ, 0,
- (struct sockaddr*)&(addr), &addrlen);
- if (length<0) {
+ socklen_t addrlen = sizeof(struct sockaddr_in);
+ offset = 0;
+ length = recvfrom (sock, (char *)buf, MAXDGRAMSZ*2, 0,
+ (struct sockaddr*)&(addr.addr), &addrlen);
+ if (length<0) {
length = 0;
print_error("error on recv");
}
dgrams_down++;
bytes_down+=length;
- Time();
- return length;
+ Time();
+ return length;
}
-SOCKET Datagram::Wait (int sockcnt, SOCKET* sockets, tint usec) {
- struct timeval timeout;
- timeout.tv_sec = usec/TINT_SEC;
- timeout.tv_usec = usec%TINT_SEC;
- int max_sock_fd = 0;
- fd_set bases, err;
- FD_ZERO(&bases);
- FD_ZERO(&err);
- for(int i=0; i<sockcnt; i++) {
- FD_SET(sockets[i],&bases);
- FD_SET(sockets[i],&err);
- if (sockets[i]>max_sock_fd)
- max_sock_fd = sockets[i];
- }
- int sel = select(max_sock_fd+1, &bases, NULL, &err, &timeout);
+SOCKET Datagram::Wait (tint usec) {
+ struct timeval timeout;
+ timeout.tv_sec = usec/TINT_SEC;
+ timeout.tv_usec = usec%TINT_SEC;
+ int max_sock_fd = 0;
+ fd_set rdfd, wrfd, errfd;
+ FD_ZERO(&rdfd);
+ FD_ZERO(&wrfd);
+ FD_ZERO(&errfd);
+ for(int i=0; i<sock_count; i++) {
+ if (sock_open[i].may_read!=0)
+ FD_SET(sock_open[i].sock,&rdfd);
+ if (sock_open[i].may_write!=0)
+ FD_SET(sock_open[i].sock,&wrfd);
+ if (sock_open[i].on_error!=0)
+ FD_SET(sock_open[i].sock,&errfd);
+ if (sock_open[i].sock>max_sock_fd)
+ max_sock_fd = sock_open[i].sock;
+ }
+ SOCKET sel = select(max_sock_fd+1, &rdfd, &wrfd, &errfd, &timeout);
Time();
- if (sel>0) {
- for (int i=0; i<=sockcnt; i++)
- if (FD_ISSET(sockets[i],&bases))
- return sockets[i];
- } else if (sel<0) {
- print_error("select fails");
- }
- return INVALID_SOCKET;
+ if (sel>0) {
+ for (int i=0; i<=sock_count; i++) {
+ sckrwecb_t& sct = sock_open[i];
+ if (sct.may_read && FD_ISSET(sct.sock,&rdfd))
+ (*(sct.may_read))(sct.sock);
+ if (sct.may_write && FD_ISSET(sct.sock,&wrfd))
+ (*(sct.may_write))(sct.sock);
+ if (sct.on_error && FD_ISSET(sct.sock,&errfd))
+ (*(sct.on_error))(sct.sock);
+ }
+ } else if (sel<0) {
+ print_error("select fails");
+ }
+ return sel;
}
tint Datagram::Time () {
- //HiResTimeOfDay* tod = HiResTimeOfDay::Instance();
- //tint ret = tod->getTimeUSec();
- //DLOG(INFO)<<"now is "<<ret;
- return now = usec_time();
+ //HiResTimeOfDay* tod = HiResTimeOfDay::Instance();
+ //tint ret = tod->getTimeUSec();
+ //DLOG(INFO)<<"now is "<<ret;
+ return now = usec_time();
}
-SOCKET Datagram::Bind (Address addr_) {
- struct sockaddr_in addr = addr_;
- SOCKET fd;
- int len = sizeof(struct sockaddr_in), sndbuf=1<<20, rcvbuf=1<<20, enable=1;
- if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- print_error("socket() fails");
- return INVALID_SOCKET;
- }
-#ifdef _WIN32
- u_long enable = 1;
- ioctlsocket(fd, FIONBIO, &enable);
- if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (const char *)&sndbuf, sizeof(int)) != 0 ) {
- print_error("setsockopt fails");
- return INVALID_SOCKET;
- }
- if ( setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (const char *)&rcvbuf, sizeof(int)) != 0 ) {
- print_error("setsockopt2 fails");
- return INVALID_SOCKET;
- }
- setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&enable, sizeof(int));
-#else
- if (fcntl(fd, F_SETFL, O_NONBLOCK) == -1)
- return INVALID_SOCKET;
- if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &sndbuf, sizeof(int)) < 0 ) {
- print_error("setsockopt fails");
- return INVALID_SOCKET;
- }
- if ( setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(int)) < 0 ) {
- print_error("setsockopt2 fails");
- return INVALID_SOCKET;
- }
- setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int));
-#endif
- dprintf("socket buffers: %i send %i recv\n",sndbuf,rcvbuf);
- if (::bind(fd, (sockaddr*)&addr, len) != 0) {
- print_error("bind fails");
- return INVALID_SOCKET;
- }
- return fd;
+SOCKET Datagram::Bind (Address address, sckrwecb_t callbacks) {
+ struct sockaddr_in addr = address;
+ SOCKET fd;
+ int len = sizeof(struct sockaddr_in), sndbuf=1<<20, rcvbuf=1<<20;
+ #define dbnd_ensure(x) { if (!(x)) { \
+ print_error("binding fails"); close_socket(fd); return INVALID_SOCKET; } }
+ dbnd_ensure ( (fd = socket(AF_INET, SOCK_DGRAM, 0)) >= 0 );
+ dbnd_ensure( make_socket_nonblocking(fd) ); // FIXME may remove this
+ int enable = true;
+ dbnd_ensure ( setsockopt(fd, SOL_SOCKET, SO_SNDBUF,
+ (setsockoptptr_t)&sndbuf, sizeof(int)) == 0 );
+ dbnd_ensure ( setsockopt(fd, SOL_SOCKET, SO_RCVBUF,
+ (setsockoptptr_t)&rcvbuf, sizeof(int)) == 0 );
+ //setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (setsockoptptr_t)&enable, sizeof(int));
+ dbnd_ensure ( ::bind(fd, (sockaddr*)&addr, len) == 0 );
+ callbacks.sock = fd;
+ Datagram::sock_open[Datagram::sock_count++] = callbacks;
+ return fd;
}
-void Datagram::Close (int sock) { // remove from fd_set
-#ifdef _WIN32
- if (closesocket(sock)!=0)
-#else
- if (::close(sock)!=0)
-#endif
- print_error("on closing a socket");
+void Datagram::Close (SOCKET sock) {
+ for(int i=0; i<Datagram::sock_count; i++)
+ if (Datagram::sock_open[i].sock==sock)
+ Datagram::sock_open[i] = Datagram::sock_open[--Datagram::sock_count];
+ if (!close_socket(sock))
+ print_error("on closing a socket");
}
std::string sock2str (struct sockaddr_in addr) {
- char ipch[32];
+ char ipch[32];
#ifdef _WIN32
- //Vista only: InetNtop(AF_INET,&(addr.sin_addr),ipch,32);
- // IPv4 only:
- struct in_addr inaddr;
- memcpy(&inaddr, &(addr.sin_addr), sizeof(inaddr));
- strncpy(ipch, inet_ntoa(inaddr),32);
+ //Vista only: InetNtop(AF_INET,&(addr.sin_addr),ipch,32);
+ // IPv4 only:
+ struct in_addr inaddr;
+ memcpy(&inaddr, &(addr.sin_addr), sizeof(inaddr));
+ strncpy(ipch, inet_ntoa(inaddr),32);
#else
- inet_ntop(AF_INET,&(addr.sin_addr),ipch,32);
+ inet_ntop(AF_INET,&(addr.sin_addr),ipch,32);
#endif
- sprintf(ipch+strlen(ipch),":%i",ntohs(addr.sin_port));
- return std::string(ipch);
+ sprintf(ipch+strlen(ipch),":%i",ntohs(addr.sin_port));
+ return std::string(ipch);
}
/*
-std::string Datagram::to_string () const { // TODO: pretty-print P2TP
- std::string addrs = sock2str(addr);
- char hex[MAXDGRAMSZ*2];
- for(int i=offset; i<length; i++)
- sprintf(hex+i*2,"%02x",buf[i]);
- std::string hexs(hex+offset*2,(length-offset)*2);
- return addrs + '\t' + hexs;
+std::string Datagram::to_string () const { // TODO: pretty-print swift
+ std::string addrs = sock2str(addr);
+ char hex[MAXDGRAMSZ*2];
+ for(int i=offset; i<length; i++)
+ sprintf(hex+i*2,"%02x",buf[i]);
+ std::string hexs(hex+offset*2,(length-offset)*2);
+ return addrs + '\t' + hexs;
}*/
}
projects / swift-upb.git / blobdiff