int CNotifyEventQueue::AddEntry(Snmp *snmp,
const OidCollection &trapids,
const TargetCollection &targets)
{
SnmpSynchronize _synchronize(*this); // instead of REENTRANT()
if (snmp != m_snmpSession)
{
debugprintf(0, "WARNING: Adding notification event for other Snmp object");
}
if (!m_msgCount)
{
m_notify_addr = snmp->get_listen_address();
m_notify_addr.set_port(m_listen_port);
int status = SNMP_CLASS_SUCCESS;
// This is the first request to receive notifications
// Set up the socket for the snmp trap port (162) or the
// specified port through set_listen_port()
bool is_v4_address = (m_notify_addr.get_ip_version() == Address::version_ipv4);
if (is_v4_address)
{
struct sockaddr_in mgr_addr;
// open a socket to be used for the session
if ((m_notify_fd = socket(AF_INET, SOCK_DGRAM,0)) < 0)
{
#ifdef WIN32
int werr = WSAGetLastError();
if (EMFILE == werr ||WSAENOBUFS == werr || ENFILE == werr)
status = SNMP_CLASS_RESOURCE_UNAVAIL;
else if (WSAEHOSTDOWN == werr)
status = SNMP_CLASS_TL_FAILED;
else
status = SNMP_CLASS_TL_UNSUPPORTED;
#else
if (EMFILE == errno || ENOBUFS == errno || ENFILE == errno)
status = SNMP_CLASS_RESOURCE_UNAVAIL;
else if (EHOSTDOWN == errno)
status = SNMP_CLASS_TL_FAILED;
else
status = SNMP_CLASS_TL_UNSUPPORTED;
#endif
cleanup();
return status;
}
// set up the manager socket attributes
unsigned long inaddr = inet_addr(IpAddress(m_notify_addr).get_printable());
memset(&mgr_addr, 0, sizeof(mgr_addr));
mgr_addr.sin_family = AF_INET;
mgr_addr.sin_addr.s_addr = inaddr; // was htonl( INADDR_ANY);
mgr_addr.sin_port = htons(m_notify_addr.get_port());
#ifdef CYGPKG_NET_OPENBSD_STACK
mgr_addr.sin_len = sizeof(mgr_addr);
#endif
// bind the socket
if (bind(m_notify_fd, (struct sockaddr *) &mgr_addr,
sizeof(mgr_addr)) < 0)
{
#ifdef WIN32
int werr = WSAGetLastError();
if (WSAEADDRINUSE == werr)
status = SNMP_CLASS_TL_IN_USE;
else if (WSAENOBUFS == werr)
status = SNMP_CLASS_RESOURCE_UNAVAIL;
else if (werr == WSAEAFNOSUPPORT)
status = SNMP_CLASS_TL_UNSUPPORTED;
else if (werr == WSAENETUNREACH)
status = SNMP_CLASS_TL_FAILED;
else if (werr == EACCES)
status = SNMP_CLASS_TL_ACCESS_DENIED;
else
status = SNMP_CLASS_INTERNAL_ERROR;
#else
if (EADDRINUSE == errno)
status = SNMP_CLASS_TL_IN_USE;
else if (ENOBUFS == errno)
status = SNMP_CLASS_RESOURCE_UNAVAIL;
else if (errno == EAFNOSUPPORT)
status = SNMP_CLASS_TL_UNSUPPORTED;
else if (errno == ENETUNREACH)
status = SNMP_CLASS_TL_FAILED;
else if (errno == EACCES)
status = SNMP_CLASS_TL_ACCESS_DENIED;
else
{
debugprintf(0, "Uncatched errno value %d, returning internal error.",
errno);
status = SNMP_CLASS_INTERNAL_ERROR;
}
#endif
debugprintf(0, "Fatal: could not bind to %s",
m_notify_addr.get_printable());
cleanup();
return status;
}
debugprintf(3, "Bind to %s for notifications, fd %d.",
m_notify_addr.get_printable(), m_notify_fd);
} // is_v4_address
else
{
// not is_v4_address
#ifdef SNMP_PP_IPv6
// open a socket to be used for the session
if ((m_notify_fd = socket(AF_INET6, SOCK_DGRAM,0)) < 0)
{
#ifdef WIN32
int werr = WSAGetLastError();
if (EMFILE == werr ||WSAENOBUFS == werr || ENFILE == werr)
status = SNMP_CLASS_RESOURCE_UNAVAIL;
else if (WSAEHOSTDOWN == werr)
status = SNMP_CLASS_TL_FAILED;
else
status = SNMP_CLASS_TL_UNSUPPORTED;
#else
if (EMFILE == errno || ENOBUFS == errno || ENFILE == errno)
status = SNMP_CLASS_RESOURCE_UNAVAIL;
else if (EHOSTDOWN == errno)
status = SNMP_CLASS_TL_FAILED;
else
status = SNMP_CLASS_TL_UNSUPPORTED;
#endif
cleanup();
return status;
}
#ifdef NOTIFY_SET_IPV6_V6ONLY
int on = 1;
if (setsockopt(m_notify_fd, IPPROTO_IPV6, IPV6_V6ONLY,
(char *)&on, sizeof(on)) == -1)
{
LOG_BEGIN(loggerModuleName, WARNING_LOG | 1);
LOG("Could not set option IPV6_V6ONLY on notify socket (errno)");
LOG(errno);
LOG_END;
}
else
{
LOG_BEGIN(loggerModuleName, INFO_LOG | 3);
LOG("Have set IPV6_V6ONLY option on notify socket");
LOG_END;
}
#endif
// set up the manager socket attributes
struct sockaddr_in6 mgr_addr;
memset(&mgr_addr, 0, sizeof(mgr_addr));
unsigned int scope = 0;
OctetStr addrstr = ((IpAddress &)m_notify_addr).IpAddress::get_printable();
if (m_notify_addr.has_ipv6_scope())
{
scope = m_notify_addr.get_scope();
int y = addrstr.len() - 1;
while ((y>0) && (addrstr[y] != '%'))
{
addrstr.set_len(addrstr.len() - 1);
y--;
}
if (addrstr[y] == '%')
addrstr.set_len(addrstr.len() - 1);
}
if (inet_pton(AF_INET6, addrstr.get_printable(),
&mgr_addr.sin6_addr) < 0)
{
LOG_BEGIN(loggerModuleName, ERROR_LOG | 1);
LOG("Notify transport: inet_pton returns (errno) (str)");
LOG(errno);
LOG(strerror(errno));
LOG_END;
cleanup();
return SNMP_CLASS_INVALID_ADDRESS;
}
mgr_addr.sin6_family = AF_INET6;
mgr_addr.sin6_port = htons(m_notify_addr.get_port());
mgr_addr.sin6_scope_id = scope;
// bind the socket
if (bind(m_notify_fd, (struct sockaddr *) &mgr_addr,
sizeof(mgr_addr)) < 0)
{
#ifdef WIN32
int werr = WSAGetLastError();
if (WSAEADDRINUSE == werr)
status = SNMP_CLASS_TL_IN_USE;
else if (WSAENOBUFS == werr)
status = SNMP_CLASS_RESOURCE_UNAVAIL;
else if (werr == WSAEAFNOSUPPORT)
status = SNMP_CLASS_TL_UNSUPPORTED;
else if (werr == WSAENETUNREACH)
status = SNMP_CLASS_TL_FAILED;
else if (werr == EACCES)
status = SNMP_CLASS_TL_ACCESS_DENIED;
else
status = SNMP_CLASS_INTERNAL_ERROR;
#else
if (EADDRINUSE == errno)
status = SNMP_CLASS_TL_IN_USE;
else if (ENOBUFS == errno)
status = SNMP_CLASS_RESOURCE_UNAVAIL;
else if (errno == EAFNOSUPPORT)
status = SNMP_CLASS_TL_UNSUPPORTED;
else if (errno == ENETUNREACH)
status = SNMP_CLASS_TL_FAILED;
else if (errno == EACCES)
status = SNMP_CLASS_TL_ACCESS_DENIED;
else
{
debugprintf(0, "Uncatched errno value %d, returning internal error.",
errno);
status = SNMP_CLASS_INTERNAL_ERROR;
}
#endif
debugprintf(0, "Fatal: could not bind to %s",
m_notify_addr.get_printable());
cleanup();
return status;
}
debugprintf(3, "Bind to %s for notifications, fd %d.",
m_notify_addr.get_printable(), m_notify_fd);
#else
debugprintf(0, "User error: Enable IPv6 and recompile snmp++.");
cleanup();
return SNMP_CLASS_TL_UNSUPPORTED;
#endif
} // not is_v4_address
}
CNotifyEvent *newEvent = new CNotifyEvent(snmp, trapids, targets);
/*---------------------------------------------------------*/
/* Insert entry at head of list, done automagically by the */
/* constructor function, so don't use the return value. */
/*---------------------------------------------------------*/
(void) new CNotifyEventQueueElt(newEvent, m_head.GetNext(), &m_head);
m_msgCount++;
return SNMP_CLASS_SUCCESS;
}
