diff options
Diffstat (limited to 'ASNMP/asnmp/transaction.cpp')
| -rw-r--r-- | ASNMP/asnmp/transaction.cpp | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/ASNMP/asnmp/transaction.cpp b/ASNMP/asnmp/transaction.cpp deleted file mode 100644 index 57abe2f0faf..00000000000 --- a/ASNMP/asnmp/transaction.cpp +++ /dev/null @@ -1,202 +0,0 @@ -// $Id$ - -// ============================================================================ -// -// = LIBRARY -// asnmp -// -// = FILENAME -// transaction.cpp -// -// = DESCRIPTION -// implements blocking SNMPv1 API using a simple state machine -// transactions over UDP/IP networks -// -// = AUTHOR -// Michael R MacFaden mrm@cisco.com - remove v2c, async, rework for ACE -// ============================================================================ - -#include "ace/Reactor.h" -#include "asnmp/transaction.h" - -ACE_RCSID(asnmp, transaction, "$Id$") - -// pre: pdu, target report valid() == 1 -// post: pdu sent out over the wire -inline void reset_receive_buffer(iovec& io) -{ - io.iov_base = 0; - io.iov_len = 0; -} - -transaction::transaction(const Pdu& pdu, const UdpTarget& target, - ACE_SOCK_Dgram& io): - result_(0), - wp_(pdu,target), params_(target), session_(io) -{ - // last step, convert address (get ride of this once we have merged address - UdpAddress udp; - target.get_address(udp); - // via string conversion "dotted-quad:port" - ACE_INET_Addr tmp(udp); - addr_ = tmp; - reset_receive_buffer(receive_iovec_); -} - -transaction::~transaction() -{ - ACE_Reactor::instance()->remove_handler(this, READ_MASK | DONT_CALL); - ACE_Reactor::instance()->cancel_timer(this); - - delete [] receive_iovec_.iov_base; -} - -// implement state machine, send, wait (timeout/results) return -int transaction::run() -{ - int rc, done = FALSE; - int retry_counter = 0; - ACE_Time_Value to(params_.get_timeout(), 0); // seconds - ACE_Reactor reactor; - - // 1. register io port for read access - if (reactor.register_handler(session_.get_handle(), this, - ACE_Event_Handler::READ_MASK) == -1) - return SNMP_CLASS_INTERNAL_ERROR; - - // register a time handler and a socket with this - - while (!done) { - - if ((rc = send()) < 0) // send pkt to agent - return rc; - else { - if (retry_counter++ > params_.get_retry()) - return SNMP_CLASS_TIMEOUT; - } - - // 2. wait for events (timeout, returned msg) - if (( rc = reactor.handle_events (to)) == 1) // one handler registered - return 0; - else { - if (rc == 0) { - to.set(params_.get_timeout(), 0); - } - else - return SNMP_CLASS_INTERNAL_ERROR; - } - } - return SNMP_CLASS_INTERNAL_ERROR; -} - -// implement state machine, send, wait (timeout/results) return -int transaction::run(transaction_result * r) -{ - result_ = r; - int rc; - - // 1. register io port for read access - ACE_Reactor * reactor = ACE_Reactor::instance(); - if (reactor->register_handler(session_.get_handle(), - this, - READ_MASK) == -1) - return SNMP_CLASS_INTERNAL_ERROR; - - retry_counter_ = 0; - - // register a time handler and a socket with this - ACE_Time_Value to = params_.get_timeout(); - if (reactor->schedule_timer(this, 0, to, to) < 0) - return SNMP_CLASS_INTERNAL_ERROR; - - if ((rc = send()) < 0) // send pkt to agent - return rc; - return 0; -} - -// got back response from SNMPv1 agent - process it -int transaction::handle_input (ACE_HANDLE) -{ - // OS allocates iovec_.iov_base ptr and len - delete [] receive_iovec_.iov_base; - reset_receive_buffer(receive_iovec_); - int rc = session_.recv(&receive_iovec_, receive_addr_, 0); - if (rc == -1) { - delete [] receive_iovec_.iov_base; - reset_receive_buffer(receive_iovec_); - if (result_) - result_->result(this, SNMP_CLASS_RESOURCE_UNAVAIL); - return SNMP_CLASS_RESOURCE_UNAVAIL; - } - if (result_) - { - result_->result(this, rc); - return 0; - } - return rc; -} - -int transaction::handle_timeout(const ACE_Time_Value &, - const void *) -{ - int rc; - if ((rc = send()) < 0) // send pkt to agent - result_->result(this, 0); - else - if (retry_counter_++ > params_.get_retry()) - result_->result(this, SNMP_CLASS_TIMEOUT); - - return 0; -} - - -const ACE_INET_Addr& transaction::get_from_addr() const -{ - return receive_addr_; -} - - -// return pdu to caller -int transaction::result(Pdu& pdu, char *comm_str, ACE_INET_Addr *from) -{ - // TODO: check to see the sender matches the receiver address.. - - // remove any vbs existing in this pdu - pdu.delete_all_vbs(); - - // any data to return? - if (receive_iovec_.iov_len == 0) - return -1; - - wpdu tmp(receive_iovec_); - - snmp_version ver; - - // return comm str and from address of incomming pdu if requested - int rc = tmp.get_pdu(pdu, ver); - if (comm_str) - ACE_OS::strcpy(comm_str, (char *)tmp.get_community()); - if (from) - *from = receive_addr_; - return rc; -} - -transaction::transaction(ACE_SOCK_Dgram& io) -: result_(0), session_(io) -{ - reset_receive_buffer(receive_iovec_); -} - - -int transaction::send() -{ - iovec io = wp_.get_buffer(); - if (io.iov_len == 0) { - // NO DATA ? - return -1; - } - ssize_t rc = session_.send (io.iov_base, io.iov_len, addr_ , 0); - return rc; -} - -transaction_result::~transaction_result() {} |