rtnetlink integrated. no more callouts to iproute2
This commit is contained in:
parent
62210e57f1
commit
b22405b64b
7 changed files with 566 additions and 243 deletions
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@ -54,39 +54,36 @@ LinuxNetLink::LinuxNetLink()
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: _t()
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, _running(false)
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, _routes_ipv4()
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, _rv4_m()
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, _routes_ipv6()
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, _rv6_m()
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, _seq(0)
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, _interfaces()
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, _if_m()
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, _fd(socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE))
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, _la({0})
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{
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// set socket timeout to 1 sec so we're not permablocking recv() calls
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struct timeval tv;
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tv.tv_sec = 1;
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tv.tv_usec = 0;
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if(setsockopt(_fd, SOL_SOCKET, SO_RCVTIMEO, (const char*)&tv, sizeof(tv)) != 0) {
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fprintf(stderr, "setsockopt failed: %s\n", strerror(errno));
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}
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_setSocketTimeout(_fd, 1);
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_la.nl_family = AF_NETLINK;
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_la.nl_pid = getpid();
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_la.nl_pid = getpid()+1;
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_la.nl_groups = RTMGRP_LINK|RTMGRP_IPV4_IFADDR|RTMGRP_IPV6_IFADDR|RTMGRP_IPV4_ROUTE|RTMGRP_IPV6_ROUTE|RTMGRP_NOTIFY;
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if (bind(_fd, (struct sockaddr*)&_la, sizeof(_la))) {
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fprintf(stderr, "Error connecting to RTNETLINK: %s\n", strerror(errno));
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::exit(1);
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}
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_running = true;
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_t = Thread::start(this);
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fprintf(stderr, "Requesting IPV4 Routes\n");
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_requestIPv4Routes();
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Thread::sleep(10);
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fprintf(stderr, "Requesting IPV6 Routes\n");
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_requestIPv6Routes();
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Thread::sleep(10);
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fprintf(stderr, "Requesting Interface List\n");
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_requestInterfaceList();
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_running = true;
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_t = Thread::start(this);
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}
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LinuxNetLink::~LinuxNetLink()
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@ -97,7 +94,17 @@ LinuxNetLink::~LinuxNetLink()
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::close(_fd);
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}
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void LinuxNetLink::threadMain() throw()
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void LinuxNetLink::_setSocketTimeout(int fd, int seconds)
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{
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struct timeval tv;
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tv.tv_sec = seconds;
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tv.tv_usec = 0;
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if(setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (const char*)&tv, sizeof(tv)) != 0) {
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fprintf(stderr, "setsockopt failed: %s\n", strerror(errno));
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}
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}
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int LinuxNetLink::_doRecv(int fd)
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{
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char buf[8192];
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char *p = NULL;
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@ -106,26 +113,24 @@ void LinuxNetLink::threadMain() throw()
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int rtn = 0;
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p = buf;
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while(_running) {
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rtn = recv(_fd, p, sizeof(buf) - nll, 0);
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while(true) {
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rtn = recv(fd, p, sizeof(buf) - nll, 0);
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if (rtn > 0) {
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nlp = (struct nlmsghdr *)p;
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if(nlp->nlmsg_type == NLMSG_ERROR && (nlp->nlmsg_flags & NLM_F_ACK) != NLM_F_ACK) {
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fprintf(stderr, "NLMSG_ERROR\n");
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struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(nlp);
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if (err->error != 0) {
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fprintf(stderr, "rtnetlink error: %s\n", strerror(-(err->error)));
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}
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p = buf;
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nll = 0;
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continue;
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break;
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}
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if (nlp->nlmsg_type == NLMSG_NOOP) {
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fprintf(stderr, "noop\n");
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continue;
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break;
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}
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if( (nlp->nlmsg_flags & NLM_F_MULTI) == NLM_F_MULTI || (nlp->nlmsg_type == NLMSG_DONE))
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@ -134,7 +139,7 @@ void LinuxNetLink::threadMain() throw()
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_processMessage(nlp, nll);
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p = buf;
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nll = 0;
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continue;
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break;
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}
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p += rtn;
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nll += rtn;
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@ -144,7 +149,7 @@ void LinuxNetLink::threadMain() throw()
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fprintf(stderr, "NLMSG_OVERRUN: Data lost\n");
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p = buf;
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nll = 0;
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continue;
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break;
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}
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nll += rtn;
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@ -152,8 +157,21 @@ void LinuxNetLink::threadMain() throw()
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_processMessage(nlp, nll);
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p = buf;
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nll = 0;
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break;
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} else {
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break;
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}
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else {
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}
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return rtn;
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}
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void LinuxNetLink::threadMain() throw()
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{
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int rtn = 0;
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while(_running) {
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rtn = _doRecv(_fd);
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if (rtn <= 0) {
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Thread::sleep(100);
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continue;
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}
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@ -258,6 +276,7 @@ void LinuxNetLink::_routeAdded(struct nlmsghdr *nlp)
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{
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char dsts[40] = {0};
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char gws[40] = {0};
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char srcs[40] = {0};
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char ifs[16] = {0};
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char ms[24] = {0};
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@ -272,6 +291,9 @@ void LinuxNetLink::_routeAdded(struct nlmsghdr *nlp)
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case RTA_DST:
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inet_ntop(rtp->rtm_family, RTA_DATA(rtap), dsts, rtp->rtm_family == AF_INET ? 24 : 40);
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break;
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case RTA_SRC:
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inet_ntop(rtp->rtm_family, RTA_DATA(rtap), srcs, rtp->rtm_family == AF_INET ? 24: 40);
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break;
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case RTA_GATEWAY:
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inet_ntop(rtp->rtm_family, RTA_DATA(rtap), gws, rtp->rtm_family == AF_INET ? 24 : 40);
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break;
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@ -282,13 +304,14 @@ void LinuxNetLink::_routeAdded(struct nlmsghdr *nlp)
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}
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sprintf(ms, "%d", rtp->rtm_dst_len);
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fprintf(stderr, "Route Added: dst %s/%s gw %s if %s\n", dsts, ms, gws, ifs);
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fprintf(stderr, "Route Added: dst %s/%s gw %s src %s if %s\n", dsts, ms, gws, srcs, ifs);
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}
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void LinuxNetLink::_routeDeleted(struct nlmsghdr *nlp)
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{
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char dsts[40] = {0};
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char gws[40] = {0};
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char srcs[40] = {0};
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char ifs[16] = {0};
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char ms[24] = {0};
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@ -303,6 +326,9 @@ void LinuxNetLink::_routeDeleted(struct nlmsghdr *nlp)
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case RTA_DST:
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inet_ntop(rtp->rtm_family, RTA_DATA(rtap), dsts, rtp->rtm_family == AF_INET ? 24 : 40);
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break;
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case RTA_SRC:
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inet_ntop(rtp->rtm_family, RTA_DATA(rtap), srcs, rtp->rtm_family == AF_INET ? 24 : 40);
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break;
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case RTA_GATEWAY:
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inet_ntop(rtp->rtm_family, RTA_DATA(rtap), gws, rtp->rtm_family == AF_INET ? 24 : 40);
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break;
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@ -313,7 +339,7 @@ void LinuxNetLink::_routeDeleted(struct nlmsghdr *nlp)
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}
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sprintf(ms, "%d", rtp->rtm_dst_len);
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fprintf(stderr, "Route Deleted: dst %s/%s gw %s if %s\n", dsts, ms, gws, ifs);
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fprintf(stderr, "Route Deleted: dst %s/%s gw %s src %s if %s\n", dsts, ms, gws, srcs, ifs);
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}
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void LinuxNetLink::_linkAdded(struct nlmsghdr *nlp)
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@ -348,12 +374,15 @@ void LinuxNetLink::_linkAdded(struct nlmsghdr *nlp)
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}
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}
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struct iface_entry &entry = _interfaces[ifip->ifi_index];
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entry.index = ifip->ifi_index;
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memcpy(entry.ifacename, ifname, sizeof(ifname));
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memcpy(entry.mac, mac, sizeof(mac));
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memcpy(entry.mac_bin, mac_bin, 6);
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entry.mtu = mtu;
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{
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Mutex::Lock l(_if_m);
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struct iface_entry &entry = _interfaces[ifip->ifi_index];
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entry.index = ifip->ifi_index;
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memcpy(entry.ifacename, ifname, sizeof(ifname));
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memcpy(entry.mac, mac, sizeof(mac));
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memcpy(entry.mac_bin, mac_bin, 6);
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entry.mtu = mtu;
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}
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fprintf(stderr, "Link Added: %s mac: %s, mtu: %d\n", ifname, mac, mtu);
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}
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@ -389,13 +418,33 @@ void LinuxNetLink::_linkDeleted(struct nlmsghdr *nlp)
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}
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fprintf(stderr, "Link Deleted: %s mac: %s, mtu: %d\n", ifname, mac, mtu);
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if(_interfaces.contains(ifip->ifi_index)) {
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_interfaces.erase(ifip->ifi_index);
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{
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Mutex::Lock l(_if_m);
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if(_interfaces.contains(ifip->ifi_index)) {
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_interfaces.erase(ifip->ifi_index);
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}
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}
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}
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void LinuxNetLink::_requestIPv4Routes()
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{
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int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
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if (fd == -1) {
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fprintf(stderr, "Error opening RTNETLINK socket: %s\n", strerror(errno));
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return;
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}
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_setSocketTimeout(fd);
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struct sockaddr_nl la;
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la.nl_family = AF_NETLINK;
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la.nl_pid = getpid();
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la.nl_groups = RTMGRP_IPV4_ROUTE;
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if(bind(fd, (struct sockaddr*)&la, sizeof(la))) {
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fprintf(stderr, "Error binding RTNETLINK: %s\n", strerror(errno));
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return;
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}
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struct nl_route_req req;
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bzero(&req, sizeof(req));
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req.nl.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
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@ -422,11 +471,32 @@ void LinuxNetLink::_requestIPv4Routes()
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msg.msg_iov = &iov;
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msg.msg_iovlen = 1;
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sendmsg(_fd, &msg, 0);
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sendmsg(fd, &msg, 0);
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_doRecv(fd);
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close(fd);
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}
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void LinuxNetLink::_requestIPv6Routes()
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{
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int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
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if (fd == -1) {
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fprintf(stderr, "Error opening RTNETLINK socket: %s\n", strerror(errno));
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return;
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}
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_setSocketTimeout(fd);
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struct sockaddr_nl la;
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la.nl_family = AF_NETLINK;
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la.nl_pid = getpid();
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la.nl_groups = RTMGRP_IPV6_ROUTE;
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if(bind(fd, (struct sockaddr*)&la, sizeof(struct sockaddr_nl))) {
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fprintf(stderr, "Error binding RTNETLINK: %s\n", strerror(errno));
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return;
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}
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struct nl_route_req req;
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bzero(&req, sizeof(req));
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req.nl.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
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@ -453,11 +523,32 @@ void LinuxNetLink::_requestIPv6Routes()
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msg.msg_iov = &iov;
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msg.msg_iovlen = 1;
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sendmsg(_fd, &msg, 0);
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sendmsg(fd, &msg, 0);
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_doRecv(fd);
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close(fd);
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}
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void LinuxNetLink::_requestInterfaceList()
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{
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int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
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if (fd == -1) {
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fprintf(stderr, "Error opening RTNETLINK socket: %s\n", strerror(errno));
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return;
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}
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_setSocketTimeout(fd);
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struct sockaddr_nl la;
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la.nl_family = AF_NETLINK;
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la.nl_pid = getpid();
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la.nl_groups = RTMGRP_LINK;
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if(bind(fd, (struct sockaddr*)&la, sizeof(struct sockaddr_nl))) {
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fprintf(stderr, "Error binding RTNETLINK: %s\n", strerror(errno));
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return;
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}
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struct nl_if_req req;
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bzero(&req, sizeof(req));
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req.nl.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
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@ -482,11 +573,43 @@ void LinuxNetLink::_requestInterfaceList()
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iov.iov_len = req.nl.nlmsg_len;
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msg.msg_iov = &iov;
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msg.msg_iovlen = 1;
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sendmsg(_fd, &msg, 0);
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sendmsg(fd, &msg, 0);
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_doRecv(fd);
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close(fd);
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}
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void LinuxNetLink::addRoute(const InetAddress &target, const InetAddress &via, const char *ifaceName)
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void LinuxNetLink::addRoute(const InetAddress &target, const InetAddress &via, const InetAddress &src, const char *ifaceName)
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{
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int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
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if (fd == -1) {
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fprintf(stderr, "Error opening RTNETLINK socket: %s\n", strerror(errno));
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return;
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}
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_setSocketTimeout(fd);
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struct sockaddr_nl la;
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bzero(&la, sizeof(la));
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la.nl_family = AF_NETLINK;
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la.nl_pid = getpid();
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if(bind(fd, (struct sockaddr*)&la, sizeof(struct sockaddr_nl))) {
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fprintf(stderr, "Error binding RTNETLINK: %s\n", strerror(errno));
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return;
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}
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char tmp[64];
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char tmp2[64];
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char tmp3[64];
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fprintf(stderr, "Adding Route. target: %s via: %s src: %s iface: %s\n", target.toString(tmp), via.toString(tmp2), src.toString(tmp3), ifaceName);
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if(!target) {
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fprintf(stderr, "Uhhhh adding an empty route?!?!?");
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return;
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}
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int rtl = sizeof(struct rtmsg);
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struct nl_route_req req;
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bzero(&req, sizeof(req));
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@ -494,49 +617,54 @@ void LinuxNetLink::addRoute(const InetAddress &target, const InetAddress &via, c
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struct rtattr *rtap = (struct rtattr *)req.buf;
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rtap->rta_type = RTA_DST;
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if (target.isV4()) {
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rtap->rta_len = sizeof(struct rtattr)+sizeof(struct in_addr);
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memcpy((void*)((char*)rtap+sizeof(struct rtattr)), &((struct sockaddr_in*)&target)->sin_addr, sizeof(struct in_addr));
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rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
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memcpy(RTA_DATA(rtap), &((struct sockaddr_in*)&target)->sin_addr, sizeof(struct in_addr));
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} else {
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rtap->rta_len = sizeof(struct rtattr)+sizeof(struct in6_addr);
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memcpy((void*)((char*)rtap+sizeof(struct rtattr)), &((struct sockaddr_in6*)&target)->sin6_addr, sizeof(struct in6_addr));
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rtap->rta_len = RTA_LENGTH(sizeof(struct in6_addr));
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memcpy(RTA_DATA(rtap), &((struct sockaddr_in6*)&target)->sin6_addr, sizeof(struct in6_addr));
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}
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rtl += rtap->rta_len;
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int interface_index = -1;
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if (ifaceName != NULL) {
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Hashtable<int, iface_entry>::Iterator iter(_interfaces);
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int *k = NULL;
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iface_entry *v = NULL;
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while(iter.next(k, v)) {
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if(strcmp(ifaceName, v->ifacename) == 0) {
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interface_index = v->index;
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break;
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}
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}
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if (interface_index != -1) {
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rtap = (struct rtattr *) (((char*)rtap) + rtap->rta_len);
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rtap->rta_type = RTA_OIF;
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rtap->rta_len = sizeof(struct rtattr)+sizeof(int);
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memcpy(((char*)rtap)+sizeof(rtattr), &interface_index, sizeof(int));
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rtl += rtap->rta_len;
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}
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}
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if(via) {
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rtap = (struct rtattr *)(((char*)rtap)+rtap->rta_len);
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rtap->rta_type = RTA_GATEWAY;
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if(via.isV4()) {
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rtap->rta_len = sizeof(struct rtattr)+sizeof(struct in_addr);
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memcpy((char*)rtap+sizeof(struct rtattr), &((struct sockaddr_in*)&via)->sin_addr, sizeof(struct in_addr));
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rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
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memcpy(RTA_DATA(rtap), &((struct sockaddr_in*)&via)->sin_addr, sizeof(struct in_addr));
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} else {
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rtap->rta_len = sizeof(struct rtattr)+sizeof(struct in6_addr);
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memcpy((char*)rtap+sizeof(struct rtattr), &((struct sockaddr_in6*)&via)->sin6_addr, sizeof(struct in6_addr));
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rtap->rta_len = RTA_LENGTH(sizeof(struct in6_addr));
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memcpy(RTA_DATA(rtap), &((struct sockaddr_in6*)&via)->sin6_addr, sizeof(struct in6_addr));
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}
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rtl += rtap->rta_len;
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} else if (src) {
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rtap = (struct rtattr *)(((char*)rtap)+rtap->rta_len);
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rtap->rta_type = RTA_SRC;
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if(src.isV4()) {
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rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
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memcpy(RTA_DATA(rtap), &((struct sockaddr_in*)&src)->sin_addr, sizeof(struct in_addr));
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|
||||
} else {
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in6_addr));
|
||||
memcpy(RTA_DATA(rtap), &((struct sockaddr_in6*)&src)->sin6_addr, sizeof(struct in6_addr));
|
||||
}
|
||||
req.rt.rtm_src_len = src.netmaskBits();
|
||||
}
|
||||
|
||||
if (ifaceName != NULL) {
|
||||
int interface_index = _indexForInterface(ifaceName);
|
||||
if (interface_index != -1) {
|
||||
rtap = (struct rtattr *) (((char*)rtap) + rtap->rta_len);
|
||||
rtap->rta_type = RTA_OIF;
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(int));
|
||||
memcpy(RTA_DATA(rtap), &interface_index, sizeof(int));
|
||||
rtl += rtap->rta_len;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
req.nl.nlmsg_len = NLMSG_LENGTH(rtl);
|
||||
req.nl.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
|
||||
req.nl.nlmsg_flags = NLM_F_REQUEST | NLM_F_EXCL | NLM_F_CREATE | NLM_F_ACK;
|
||||
req.nl.nlmsg_type = RTM_NEWROUTE;
|
||||
req.nl.nlmsg_pid = 0;
|
||||
req.nl.nlmsg_seq = ++_seq;
|
||||
|
@ -546,6 +674,7 @@ void LinuxNetLink::addRoute(const InetAddress &target, const InetAddress &via, c
|
|||
req.rt.rtm_scope = RT_SCOPE_UNIVERSE;
|
||||
req.rt.rtm_type = RTN_UNICAST;
|
||||
req.rt.rtm_dst_len = target.netmaskBits();
|
||||
req.rt.rtm_flags = 0;
|
||||
|
||||
struct sockaddr_nl pa;
|
||||
bzero(&pa, sizeof(pa));
|
||||
|
@ -562,11 +691,41 @@ void LinuxNetLink::addRoute(const InetAddress &target, const InetAddress &via, c
|
|||
iov.iov_len = req.nl.nlmsg_len;
|
||||
msg.msg_iov = &iov;
|
||||
msg.msg_iovlen = 1;
|
||||
sendmsg(_fd, &msg, 0);
|
||||
sendmsg(fd, &msg, 0);
|
||||
|
||||
_doRecv(fd);
|
||||
|
||||
close(fd);
|
||||
}
|
||||
|
||||
void LinuxNetLink::delRoute(const InetAddress &target, const InetAddress &via, const char *ifaceName)
|
||||
void LinuxNetLink::delRoute(const InetAddress &target, const InetAddress &via, const InetAddress &src, const char *ifaceName)
|
||||
{
|
||||
int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
|
||||
if (fd == -1) {
|
||||
fprintf(stderr, "Error opening RTNETLINK socket: %s\n", strerror(errno));
|
||||
return;
|
||||
}
|
||||
|
||||
_setSocketTimeout(fd);
|
||||
|
||||
struct sockaddr_nl la;
|
||||
la.nl_family = AF_NETLINK;
|
||||
la.nl_pid = getpid();
|
||||
|
||||
if(bind(fd, (struct sockaddr*)&la, sizeof(struct sockaddr_nl))) {
|
||||
fprintf(stderr, "Error binding RTNETLINK: %s\n", strerror(errno));
|
||||
return;
|
||||
}
|
||||
char tmp[64];
|
||||
char tmp2[64];
|
||||
char tmp3[64];
|
||||
fprintf(stderr, "Removing Route. target: %s via: %s src: %s iface: %s\n", target.toString(tmp), via.toString(tmp2), src.toString(tmp3), ifaceName);
|
||||
|
||||
if(!target) {
|
||||
fprintf(stderr, "Uhhhh deleting an empty route?!?!?");
|
||||
return;
|
||||
}
|
||||
|
||||
int rtl = sizeof(struct rtmsg);
|
||||
struct nl_route_req req;
|
||||
bzero(&req, sizeof(req));
|
||||
|
@ -574,47 +733,52 @@ void LinuxNetLink::delRoute(const InetAddress &target, const InetAddress &via, c
|
|||
struct rtattr *rtap = (struct rtattr *)req.buf;
|
||||
rtap->rta_type = RTA_DST;
|
||||
if (target.isV4()) {
|
||||
rtap->rta_len = sizeof(struct rtattr)+sizeof(struct in_addr);
|
||||
memcpy((void*)((char*)rtap+sizeof(struct rtattr)), &((struct sockaddr_in*)&target)->sin_addr, sizeof(struct in_addr));
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
|
||||
memcpy(RTA_DATA(rtap), &((struct sockaddr_in*)&target)->sin_addr, sizeof(struct in_addr));
|
||||
} else {
|
||||
rtap->rta_len = sizeof(struct rtattr)+sizeof(struct in6_addr);
|
||||
memcpy((void*)((char*)rtap+sizeof(struct rtattr)), &((struct sockaddr_in6*)&target)->sin6_addr, sizeof(struct in6_addr));
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in6_addr));
|
||||
memcpy(RTA_DATA(rtap), &((struct sockaddr_in6*)&target)->sin6_addr, sizeof(struct in6_addr));
|
||||
}
|
||||
rtl += rtap->rta_len;
|
||||
|
||||
int interface_index = -1;
|
||||
if (ifaceName != NULL) {
|
||||
Hashtable<int, iface_entry>::Iterator iter(_interfaces);
|
||||
int *k = NULL;
|
||||
iface_entry *v = NULL;
|
||||
while(iter.next(k, v)) {
|
||||
if(strcmp(ifaceName, v->ifacename) == 0) {
|
||||
interface_index = v->index;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (interface_index != -1) {
|
||||
rtap = (struct rtattr *) (((char*)rtap) + rtap->rta_len);
|
||||
rtap->rta_type = RTA_OIF;
|
||||
rtap->rta_len = sizeof(struct rtattr)+sizeof(int);
|
||||
memcpy(((char*)rtap)+sizeof(rtattr), &interface_index, sizeof(int));
|
||||
rtl += rtap->rta_len;
|
||||
}
|
||||
}
|
||||
|
||||
if(via) {
|
||||
rtap = (struct rtattr *)(((char*)rtap)+rtap->rta_len);
|
||||
rtap->rta_type = RTA_GATEWAY;
|
||||
if(via.isV4()) {
|
||||
rtap->rta_len = sizeof(struct rtattr)+sizeof(struct in_addr);
|
||||
memcpy((char*)rtap+sizeof(struct rtattr), &((struct sockaddr_in*)&via)->sin_addr, sizeof(struct in_addr));
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
|
||||
memcpy(RTA_DATA(rtap), &((struct sockaddr_in*)&via)->sin_addr, sizeof(struct in_addr));
|
||||
} else {
|
||||
rtap->rta_len = sizeof(struct rtattr)+sizeof(struct in6_addr);
|
||||
memcpy((char*)rtap+sizeof(struct rtattr), &((struct sockaddr_in6*)&via)->sin6_addr, sizeof(struct in6_addr));
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in6_addr));
|
||||
memcpy(RTA_DATA(rtap), &((struct sockaddr_in6*)&via)->sin6_addr, sizeof(struct in6_addr));
|
||||
}
|
||||
rtl += rtap->rta_len;
|
||||
} else if (src) {
|
||||
rtap = (struct rtattr *)(((char*)rtap)+rtap->rta_len);
|
||||
rtap->rta_type = RTA_SRC;
|
||||
if(src.isV4()) {
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
|
||||
memcpy(RTA_DATA(rtap), &((struct sockaddr_in*)&src)->sin_addr, sizeof(struct in_addr));
|
||||
|
||||
} else {
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in6_addr));
|
||||
memcpy(RTA_DATA(rtap), &((struct sockaddr_in6*)&src)->sin6_addr, sizeof(struct in6_addr));
|
||||
}
|
||||
req.rt.rtm_src_len = src.netmaskBits();
|
||||
}
|
||||
|
||||
if (ifaceName != NULL) {
|
||||
int interface_index = _indexForInterface(ifaceName);
|
||||
if (interface_index != -1) {
|
||||
rtap = (struct rtattr *) (((char*)rtap) + rtap->rta_len);
|
||||
rtap->rta_type = RTA_OIF;
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(int));
|
||||
memcpy(RTA_DATA(rtap), &interface_index, sizeof(int));
|
||||
rtl += rtap->rta_len;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
req.nl.nlmsg_len = NLMSG_LENGTH(rtl);
|
||||
req.nl.nlmsg_flags = NLM_F_REQUEST;
|
||||
req.nl.nlmsg_type = RTM_DELROUTE;
|
||||
|
@ -626,6 +790,7 @@ void LinuxNetLink::delRoute(const InetAddress &target, const InetAddress &via, c
|
|||
req.rt.rtm_scope = RT_SCOPE_UNIVERSE;
|
||||
req.rt.rtm_type = RTN_UNICAST;
|
||||
req.rt.rtm_dst_len = target.netmaskBits();
|
||||
req.rt.rtm_flags = 0;
|
||||
|
||||
struct sockaddr_nl pa;
|
||||
bzero(&pa, sizeof(pa));
|
||||
|
@ -642,73 +807,226 @@ void LinuxNetLink::delRoute(const InetAddress &target, const InetAddress &via, c
|
|||
iov.iov_len = req.nl.nlmsg_len;
|
||||
msg.msg_iov = &iov;
|
||||
msg.msg_iovlen = 1;
|
||||
sendmsg(_fd, &msg, 0);
|
||||
sendmsg(fd, &msg, 0);
|
||||
|
||||
_doRecv(fd);
|
||||
|
||||
close(fd);
|
||||
}
|
||||
|
||||
// void LinuxNetLink::addInterface(const char *iface, unsigned int mtu, const MAC &mac)
|
||||
// {
|
||||
// int rtl = sizeof(struct ifinfomsg);
|
||||
// struct nl_if_req req;
|
||||
// bzero(&req, sizeof(nl_if_req));
|
||||
|
||||
// struct rtattr *rtap = (struct rtattr *)req.buf;
|
||||
// rtap->rta_type = IFLA_IFNAME;
|
||||
// rtap->rta_len = sizeof(struct rtattr)+strlen(iface)+1;
|
||||
// rtl += rtap->rta_len;
|
||||
|
||||
// rtap = (struct rtattr*)(((char*)rtap)+rtap->rta_len);
|
||||
// rtap->rta_type = IFLA_MTU;
|
||||
// rtap->rta_len = sizeof(struct rtattr)+sizeof(unsigned int);
|
||||
// rtl += rtap->rta_len;
|
||||
|
||||
// rtap = (struct rtattr*)(((char*)rtap)+rtap->rta_len);
|
||||
// rtap->rta_type = IFLA_ADDRESS;
|
||||
// rtap->rta_len = sizeof(struct rtattr)+6;
|
||||
// mac.copyTo(((char*)rtap)+sizeof(struct rtattr), 6);
|
||||
// rtl += rtap->rta_len;
|
||||
|
||||
// IFLA_LINKINFO;
|
||||
// req.nl.nlmsg_len = NLMSG_LENGTH(rtl);
|
||||
// req.nl.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
|
||||
// req.nl.nlmsg_type = RTM_NEWLINK;
|
||||
// req.nl.nlmsg_pid = 0;
|
||||
// req.nl.nlmsg_seq = ++_seq;
|
||||
|
||||
// req.ifa.ifi_family = AF_UNSPEC;
|
||||
// req.ifa.ifi_type = 0; // TODO figure this one out
|
||||
// req.ifa.ifi_index = 0;
|
||||
// req.ifa.ifi_flags = IFF_UP;
|
||||
|
||||
// struct sockaddr_nl pa;
|
||||
// bzero(&pa, sizeof(pa));
|
||||
// pa.nl_family = AF_NETLINK;
|
||||
|
||||
// struct msghdr msg;
|
||||
// bzero(&msg, sizeof(msg));
|
||||
// msg.msg_name = (void*)&pa;
|
||||
// msg.msg_namelen = sizeof(pa);
|
||||
|
||||
// struct iovec iov;
|
||||
// iov.iov_base = (void*)&req.nl;
|
||||
// iov.iov_len = req.nl.nlmsg_len;
|
||||
// msg.msg_iov = &iov;
|
||||
// msg.msg_iovlen = 1;
|
||||
// sendmsg(_fd, &msg, 0);
|
||||
// }
|
||||
|
||||
// void LinuxNetLink::removeInterface(const char *iface)
|
||||
// {
|
||||
|
||||
// }
|
||||
|
||||
void LinuxNetLink::addAddress(const InetAddress &addr, const char *iface)
|
||||
{
|
||||
int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
|
||||
if (fd == -1) {
|
||||
fprintf(stderr, "Error opening RTNETLINK socket: %s\n", strerror(errno));
|
||||
return;
|
||||
}
|
||||
|
||||
_setSocketTimeout(fd);
|
||||
|
||||
struct sockaddr_nl la;
|
||||
la.nl_family = AF_NETLINK;
|
||||
la.nl_pid = getpid();
|
||||
if (addr.isV4()) {
|
||||
la.nl_groups = RTMGRP_IPV4_IFADDR;
|
||||
} else {
|
||||
la.nl_groups = RTMGRP_IPV6_IFADDR;
|
||||
}
|
||||
if(bind(fd, (struct sockaddr*)&la, sizeof(struct sockaddr_nl))) {
|
||||
fprintf(stderr, "Error binding RTNETLINK: %s\n", strerror(errno));
|
||||
return;
|
||||
}
|
||||
|
||||
char tmp[128];
|
||||
fprintf(stderr, "Adding IP address %s to interface %s", addr.toString(tmp), iface);
|
||||
int interface_index = _indexForInterface(iface);
|
||||
|
||||
if (interface_index == -1) {
|
||||
fprintf(stderr, "Unable to find index for interface %s\n", iface);
|
||||
return;
|
||||
}
|
||||
|
||||
int rtl = sizeof(struct ifaddrmsg);
|
||||
struct nl_adr_req req;
|
||||
bzero(&req, sizeof(struct nl_adr_req));
|
||||
|
||||
struct rtattr *rtap = (struct rtattr *)req.buf;;
|
||||
if(addr.isV4()) {
|
||||
struct sockaddr_in *addr_v4 = (struct sockaddr_in*)&addr;
|
||||
rtap->rta_type = IFA_ADDRESS;
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
|
||||
memcpy(RTA_DATA(rtap), &addr_v4->sin_addr, sizeof(struct in_addr));
|
||||
rtl += rtap->rta_len;
|
||||
|
||||
rtap = (struct rtattr*)(((char*)rtap) + rtap->rta_len);
|
||||
rtap->rta_type = IFA_LOCAL;
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
|
||||
memcpy(RTA_DATA(rtap), &addr_v4->sin_addr, sizeof(struct in_addr));
|
||||
rtl += rtap->rta_len;
|
||||
|
||||
InetAddress broadcast = addr.broadcast();
|
||||
if(broadcast) {
|
||||
rtap = (struct rtattr*)(((char*)rtap)+rtap->rta_len);
|
||||
struct sockaddr_in *bcast = (struct sockaddr_in*)&broadcast;
|
||||
rtap->rta_type = IFA_BROADCAST;
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
|
||||
memcpy(RTA_DATA(rtap), &bcast->sin_addr, sizeof(struct in_addr));
|
||||
rtl += rtap->rta_len;
|
||||
}
|
||||
} else { //V6
|
||||
rtap->rta_type = IFA_ADDRESS;
|
||||
struct sockaddr_in6 *addr_v6 = (struct sockaddr_in6*)&addr;
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in6_addr));
|
||||
memcpy(RTA_DATA(rtap), &addr_v6->sin6_addr, sizeof(struct in6_addr));
|
||||
rtl += rtap->rta_len;
|
||||
}
|
||||
|
||||
if (iface) {
|
||||
rtap = (struct rtattr*)(((char*)rtap)+rtap->rta_len);
|
||||
rtap->rta_type = IFA_LABEL;
|
||||
rtap->rta_len = RTA_LENGTH(strlen(iface));
|
||||
memcpy(RTA_DATA(rtap), iface, strlen(iface));
|
||||
rtl += rtap->rta_len;
|
||||
}
|
||||
|
||||
req.nl.nlmsg_len = NLMSG_LENGTH(rtl);
|
||||
req.nl.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
|
||||
req.nl.nlmsg_type = RTM_NEWADDR;
|
||||
req.nl.nlmsg_pid = 0;
|
||||
req.nl.nlmsg_seq = ++_seq;
|
||||
req.ifa.ifa_family = addr.ss_family;
|
||||
req.ifa.ifa_prefixlen = addr.port();
|
||||
req.ifa.ifa_flags = IFA_F_PERMANENT;
|
||||
req.ifa.ifa_scope = 0;
|
||||
req.ifa.ifa_index = interface_index;
|
||||
|
||||
struct sockaddr_nl pa;
|
||||
bzero(&pa, sizeof(sockaddr_nl));
|
||||
pa.nl_family = AF_NETLINK;
|
||||
|
||||
struct msghdr msg;
|
||||
bzero(&msg, sizeof(msg));
|
||||
msg.msg_name = (void*)&pa;
|
||||
msg.msg_namelen = sizeof(pa);
|
||||
|
||||
struct iovec iov;
|
||||
iov.iov_base = (void*)&req.nl;
|
||||
iov.iov_len = req.nl.nlmsg_len;
|
||||
msg.msg_iov = &iov;
|
||||
msg.msg_iovlen = 1;
|
||||
sendmsg(fd, &msg, 0);
|
||||
|
||||
_doRecv(fd);
|
||||
|
||||
close(fd);
|
||||
}
|
||||
|
||||
void LinuxNetLink::removeAddress(const InetAddress &addr, const char *iface)
|
||||
{
|
||||
int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
|
||||
if (fd == -1) {
|
||||
fprintf(stderr, "Error opening RTNETLINK socket: %s\n", strerror(errno));
|
||||
return;
|
||||
}
|
||||
|
||||
_setSocketTimeout(fd);
|
||||
|
||||
struct sockaddr_nl la;
|
||||
la.nl_family = AF_NETLINK;
|
||||
la.nl_pid = getpid();
|
||||
if (addr.isV4()) {
|
||||
la.nl_groups = RTMGRP_IPV4_IFADDR;
|
||||
} else {
|
||||
la.nl_groups = RTMGRP_IPV6_IFADDR;
|
||||
}
|
||||
if(bind(fd, (struct sockaddr*)&la, sizeof(struct sockaddr_nl))) {
|
||||
fprintf(stderr, "Error binding RTNETLINK: %s\n", strerror(errno));
|
||||
return;
|
||||
}
|
||||
|
||||
char tmp[128];
|
||||
fprintf(stderr, "Removing IP address %s from interface %s", addr.toString(tmp), iface);
|
||||
|
||||
int interface_index = _indexForInterface(iface);
|
||||
|
||||
if (interface_index == -1) {
|
||||
fprintf(stderr, "Unable to find index for interface %s\n", iface);
|
||||
return;
|
||||
}
|
||||
|
||||
int rtl = sizeof(struct ifaddrmsg);
|
||||
struct nl_adr_req req;
|
||||
bzero(&req, sizeof(struct nl_adr_req));
|
||||
|
||||
struct rtattr *rtap = (struct rtattr *)req.buf;
|
||||
if(addr.isV4()) {
|
||||
struct sockaddr_in *addr_v4 = (struct sockaddr_in*)&addr;
|
||||
rtap->rta_type = IFA_ADDRESS;
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
|
||||
memcpy(RTA_DATA(rtap), &addr_v4->sin_addr, sizeof(struct in_addr));
|
||||
rtl += rtap->rta_len;
|
||||
|
||||
rtap = (struct rtattr*)(((char*)rtap) + rtap->rta_len);
|
||||
rtap->rta_type = IFA_LOCAL;
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
|
||||
memcpy(RTA_DATA(rtap), &addr_v4->sin_addr, sizeof(struct in_addr));
|
||||
rtl += rtap->rta_len;
|
||||
|
||||
InetAddress broadcast = addr.broadcast();
|
||||
if(broadcast) {
|
||||
rtap = (struct rtattr*)(((char*)rtap)+rtap->rta_len);
|
||||
struct sockaddr_in *bcast = (struct sockaddr_in*)&broadcast;
|
||||
rtap->rta_type = IFA_BROADCAST;
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in_addr));
|
||||
memcpy(RTA_DATA(rtap), &bcast->sin_addr, sizeof(struct in_addr));
|
||||
rtl += rtap->rta_len;
|
||||
}
|
||||
} else { //V6
|
||||
rtap->rta_type = IFA_ADDRESS;
|
||||
struct sockaddr_in6 *addr_v6 = (struct sockaddr_in6*)&addr;
|
||||
rtap->rta_len = RTA_LENGTH(sizeof(struct in6_addr));
|
||||
memcpy(RTA_DATA(rtap), &addr_v6->sin6_addr, sizeof(struct in6_addr));
|
||||
rtl += rtap->rta_len;
|
||||
}
|
||||
|
||||
if (iface) {
|
||||
rtap = (struct rtattr*)(((char*)rtap)+rtap->rta_len);
|
||||
rtap->rta_type = IFA_LABEL;
|
||||
rtap->rta_len = RTA_LENGTH(strlen(iface));
|
||||
memcpy(RTA_DATA(rtap), iface, strlen(iface));
|
||||
rtl += rtap->rta_len;
|
||||
}
|
||||
|
||||
req.nl.nlmsg_len = NLMSG_LENGTH(rtl);
|
||||
req.nl.nlmsg_flags = NLM_F_REQUEST;
|
||||
req.nl.nlmsg_type = RTM_DELADDR;
|
||||
req.nl.nlmsg_pid = 0;
|
||||
req.nl.nlmsg_seq = ++_seq;
|
||||
req.ifa.ifa_family = addr.ss_family;
|
||||
req.ifa.ifa_prefixlen = addr.port();
|
||||
req.ifa.ifa_flags = IFA_F_PERMANENT;
|
||||
req.ifa.ifa_scope = 0;
|
||||
req.ifa.ifa_index = interface_index;
|
||||
|
||||
struct sockaddr_nl pa;
|
||||
bzero(&pa, sizeof(sockaddr_nl));
|
||||
pa.nl_family = AF_NETLINK;
|
||||
|
||||
struct msghdr msg;
|
||||
bzero(&msg, sizeof(msg));
|
||||
msg.msg_name = (void*)&pa;
|
||||
msg.msg_namelen = sizeof(pa);
|
||||
|
||||
struct iovec iov;
|
||||
iov.iov_base = (void*)&req.nl;
|
||||
iov.iov_len = req.nl.nlmsg_len;
|
||||
msg.msg_iov = &iov;
|
||||
msg.msg_iovlen = 1;
|
||||
sendmsg(fd, &msg, 0);
|
||||
|
||||
_doRecv(fd);
|
||||
|
||||
close(fd);
|
||||
}
|
||||
|
||||
RouteList LinuxNetLink::getIPV4Routes() const
|
||||
|
@ -721,4 +1039,20 @@ RouteList LinuxNetLink::getIPV6Routes() const
|
|||
return _routes_ipv6;
|
||||
}
|
||||
|
||||
} // namespace ZeroTier
|
||||
int LinuxNetLink::_indexForInterface(const char *iface)
|
||||
{
|
||||
Mutex::Lock l(_if_m);
|
||||
int interface_index = -1;
|
||||
Hashtable<int, iface_entry>::Iterator iter(_interfaces);
|
||||
int *k = NULL;
|
||||
iface_entry *v = NULL;
|
||||
while(iter.next(k,v)) {
|
||||
if(strcmp(iface, v->ifacename) == 0) {
|
||||
interface_index = v->index;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return interface_index;
|
||||
}
|
||||
|
||||
} // namespace ZeroTier
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue