diff options
Diffstat (limited to 'TAO/tao/Strategies/DIOP_Acceptor.cpp')
| -rw-r--r-- | TAO/tao/Strategies/DIOP_Acceptor.cpp | 763 |
1 files changed, 763 insertions, 0 deletions
diff --git a/TAO/tao/Strategies/DIOP_Acceptor.cpp b/TAO/tao/Strategies/DIOP_Acceptor.cpp new file mode 100644 index 00000000000..d60634a8a0d --- /dev/null +++ b/TAO/tao/Strategies/DIOP_Acceptor.cpp @@ -0,0 +1,763 @@ +// This may look like C, but it's really -*- C++ -*- +// $Id$ + +#include "tao/Strategies/DIOP_Acceptor.h" + +#if defined (TAO_HAS_DIOP) && (TAO_HAS_DIOP != 0) + +#include "tao/Strategies/DIOP_Profile.h" +#include "tao/MProfile.h" +#include "tao/ORB_Core.h" +#include "tao/debug.h" +#include "tao/Protocols_Hooks.h" +#include "tao/Codeset_Manager.h" +#include "tao/CDR.h" + +#include "ace/Auto_Ptr.h" +#include "ace/OS_NS_string.h" + +#if !defined(__ACE_INLINE__) +#include "tao/Strategies/DIOP_Acceptor.inl" +#endif /* __ACE_INLINE__ */ + +#include "ace/os_include/os_netdb.h" + +ACE_RCSID (Strategies, + DIOP_Acceptor, + "$Id$") + +TAO_BEGIN_VERSIONED_NAMESPACE_DECL + +TAO_DIOP_Acceptor::TAO_DIOP_Acceptor (CORBA::Boolean flag) + : TAO_Acceptor (TAO_TAG_DIOP_PROFILE), + addrs_ (0), + hosts_ (0), + endpoint_count_ (0), + version_ (TAO_DEF_GIOP_MAJOR, TAO_DEF_GIOP_MINOR), + orb_core_ (0), + lite_flag_ (flag), + connection_handler_ (0) +{ +} + +TAO_DIOP_Acceptor::~TAO_DIOP_Acceptor (void) +{ + // Make sure we are closed before we start destroying the + // strategies. + this->close (); + + delete [] this->addrs_; + + for (size_t i = 0; i < this->endpoint_count_; ++i) + CORBA::string_free (this->hosts_[i]); + + delete [] this->hosts_; +} + +// TODO = +// 2) For V1.[1,2] there are tagged components + +int +TAO_DIOP_Acceptor::create_profile (const TAO::ObjectKey & object_key, + TAO_MProfile &mprofile, + CORBA::Short priority) +{ + // Sanity check. + if (this->endpoint_count_ == 0) + return -1; + + // Check if multiple endpoints should be put in one profile or if + // they should be spread across multiple profiles. + if (priority == TAO_INVALID_PRIORITY) + return this->create_new_profile (object_key, + mprofile, + priority); + else + return this->create_shared_profile (object_key, + mprofile, + priority); +} + +int +TAO_DIOP_Acceptor::create_new_profile (const TAO::ObjectKey &object_key, + TAO_MProfile &mprofile, + CORBA::Short priority) +{ + // Adding this->endpoint_count_ to the TAO_MProfile. + int const count = mprofile.profile_count (); + if ((mprofile.size () - count) < this->endpoint_count_ + && mprofile.grow (count + this->endpoint_count_) == -1) + return -1; + + // Create a profile for each acceptor endpoint. + for (size_t i = 0; i < this->endpoint_count_; ++i) + { + TAO_DIOP_Profile *pfile = 0; + ACE_NEW_RETURN (pfile, + TAO_DIOP_Profile (this->hosts_[i], + this->addrs_[i].get_port_number (), + object_key, + this->addrs_[i], + this->version_, + this->orb_core_), + -1); + pfile->endpoint ()->priority (priority); + + if (mprofile.give_profile (pfile) == -1) + { + pfile->_decr_refcnt (); + pfile = 0; + return -1; + } + + // Do not add any tagged components to the profile if configured + // by the user not to do so, or if an IIOP 1.0 endpoint is being + // created (IIOP 1.0 did not support tagged components). + if (this->orb_core_->orb_params ()->std_profile_components () == 0 + || (this->version_.major == 1 && this->version_.minor == 0)) + continue; + + pfile->tagged_components ().set_orb_type (TAO_ORB_TYPE); + + TAO_Codeset_Manager *csm = this->orb_core_->codeset_manager(); + if (csm) + csm->set_codeset(pfile->tagged_components()); + } + + return 0; +} + +int +TAO_DIOP_Acceptor::create_shared_profile (const TAO::ObjectKey &object_key, + TAO_MProfile &mprofile, + CORBA::Short priority) +{ + size_t index = 0; + TAO_Profile *pfile = 0; + TAO_DIOP_Profile *iiop_profile = 0; + + // First see if <mprofile> already contains a DIOP profile. + for (TAO_PHandle i = 0; i != mprofile.profile_count (); ++i) + { + pfile = mprofile.get_profile (i); + if (pfile->tag () == TAO_TAG_DIOP_PROFILE) + { + iiop_profile = dynamic_cast<TAO_DIOP_Profile *> (pfile); + break; + } + } + + // If <mprofile> doesn't contain a DIOP_Profile, we need to create + // one. + if (iiop_profile == 0) + { + ACE_NEW_RETURN (iiop_profile, + TAO_DIOP_Profile (this->hosts_[0], + this->addrs_[0].get_port_number (), + object_key, + this->addrs_[0], + this->version_, + this->orb_core_), + -1); + iiop_profile->endpoint ()->priority (priority); + + if (mprofile.give_profile (iiop_profile) == -1) + { + iiop_profile->_decr_refcnt (); + iiop_profile = 0; + return -1; + } + + if (this->orb_core_->orb_params ()->std_profile_components () != 0 + && (this->version_.major >= 1 && this->version_.minor >= 1)) + { + iiop_profile->tagged_components ().set_orb_type (TAO_ORB_TYPE); + TAO_Codeset_Manager *csm = this->orb_core_->codeset_manager(); + if (csm) + csm->set_codeset(pfile->tagged_components()); + } + + index = 1; + } + + // Add any remaining acceptor endpoints to the DIOP_Profile. + for (; + index < this->endpoint_count_; + ++index) + { + TAO_DIOP_Endpoint *endpoint = 0; + ACE_NEW_RETURN (endpoint, + TAO_DIOP_Endpoint (this->hosts_[index], + this->addrs_[index].get_port_number (), + this->addrs_[index]), + -1); + endpoint->priority (priority); + iiop_profile->add_endpoint (endpoint); + } + + return 0; +} + +int +TAO_DIOP_Acceptor::is_collocated (const TAO_Endpoint *endpoint) +{ + const TAO_DIOP_Endpoint *endp = + dynamic_cast<const TAO_DIOP_Endpoint *> (endpoint); + + // Make sure the dynamically cast pointer is valid. + if (endp == 0) + return 0; + + for (size_t i = 0; i < this->endpoint_count_; ++i) + { + // compare the port and host name. Please do *NOT* optimize + // this code by comparing the IP address instead. That would + // trigger the following bug: + // + // http://deuce.doc.wustl.edu/bugzilla/show_bug.cgi?id=1220 + // + if (endp->port() == this->addrs_[i].get_port_number() + && ACE_OS::strcmp(endp->host(), this->hosts_[i]) == 0) + return 1; // Collocated + } + + return 0; // Not collocated +} + +int +TAO_DIOP_Acceptor::close (void) +{ + return 0; +} + +int +TAO_DIOP_Acceptor::open (TAO_ORB_Core *orb_core, + ACE_Reactor *reactor, + int major, + int minor, + const char *address, + const char *options) +{ + this->orb_core_ = orb_core; + + if (this->hosts_ != 0) + { + // The hostname cache has already been set! + // This is bad mojo, i.e. an internal TAO error. + ACE_ERROR_RETURN ((LM_ERROR, + ACE_TEXT ("TAO (%P|%t) ") + ACE_TEXT ("DIOP_Acceptor::open - ") + ACE_TEXT ("hostname already set\n\n")), + -1); + } + + if (address == 0) + return -1; + + if (major >=0 && minor >= 0) + this->version_.set_version (static_cast<CORBA::Octet> (major), + static_cast<CORBA::Octet> (minor)); + // Parse options + if (this->parse_options (options) == -1) + return -1; + + ACE_INET_Addr addr; + + const char *port_separator_loc = ACE_OS::strchr (address, ':'); + const char *specified_hostname = 0; + char tmp_host[MAXHOSTNAMELEN + 1]; + + if (port_separator_loc == address) + { + // The address is a port number or port name. No hostname was + // specified. The hostname for each network interface and the + // fully qualified domain name must be obtained. + + // Check for multiple network interfaces. + if (this->probe_interfaces (orb_core) == -1) + return -1; + + // First convert the port into a usable form. + if (addr.set (address + sizeof (':')) != 0) + return -1; + + // Now reset the port and set the host. + if (addr.set (addr.get_port_number (), + static_cast<ACE_UINT32> (INADDR_ANY), + 1) != 0) + return -1; + else + return this->open_i (addr, + reactor); + } + else if (port_separator_loc == 0) + { + // The address is a hostname. No port was specified, so assume + // port zero (port will be chosen for us). + if (addr.set ((unsigned short) 0, address) != 0) + return -1; + + specified_hostname = address; + } + else + { + // Host and port were specified. + if (addr.set (address) != 0) + return -1; + + // Extract out just the host part of the address. + size_t len = port_separator_loc - address; + ACE_OS::memcpy (tmp_host, address, len); + tmp_host[len] = '\0'; + + specified_hostname = tmp_host; + } + + this->endpoint_count_ = 1; // Only one hostname to store + + ACE_NEW_RETURN (this->addrs_, + ACE_INET_Addr[this->endpoint_count_], + -1); + + ACE_NEW_RETURN (this->hosts_, + char *[this->endpoint_count_], + -1); + + this->hosts_[0] = 0; + + if (this->hostname (orb_core, + addr, + this->hosts_[0], + specified_hostname) != 0) + return -1; + + // Copy the addr. The port is (re)set in + // TAO_DIOP_Acceptor::open_i(). + if (this->addrs_[0].set (addr) != 0) + return -1; + + return this->open_i (addr, + reactor); +} + +int +TAO_DIOP_Acceptor::open_default (TAO_ORB_Core *orb_core, + ACE_Reactor *reactor, + int major, + int minor, + const char *options) +{ + this->orb_core_ = orb_core; + + if (this->hosts_ != 0) + { + // The hostname cache has already been set! + // This is bad mojo, i.e. an internal TAO error. + ACE_ERROR_RETURN ((LM_ERROR, + ACE_TEXT ("TAO (%P|%t) ") + ACE_TEXT ("DIOP_Acceptor::open_default - ") + ACE_TEXT ("hostname already set\n\n")), + -1); + } + + if (major >=0 && minor >= 0) + this->version_.set_version (static_cast<CORBA::Octet> (major), + static_cast<CORBA::Octet> (minor)); + + // Parse options + if (this->parse_options (options) == -1) + return -1; + + // Check for multiple network interfaces. + if (this->probe_interfaces (orb_core) == -1) + return -1; + + // Now that each network interface's hostname has been cached, open + // an endpoint on each network interface using the INADDR_ANY + // address. + ACE_INET_Addr addr; + + if (addr.set (static_cast<unsigned short> (0), + static_cast<ACE_UINT32> (INADDR_ANY), + 1) != 0) + return -1; + + return this->open_i (addr, + reactor); +} + +int +TAO_DIOP_Acceptor::open_i (const ACE_INET_Addr& addr, + ACE_Reactor *reactor) +{ + ACE_NEW_RETURN (this->connection_handler_, + TAO_DIOP_Connection_Handler (this->orb_core_, + this->lite_flag_), + -1); + + this->connection_handler_->local_addr (addr); + this->connection_handler_->open_server (); + + // Register only with a valid handle + int const result = + reactor->register_handler (this->connection_handler_, + ACE_Event_Handler::READ_MASK); + if (result == -1) + return result; + + // Connection handler ownership now belongs to the Reactor. + this->connection_handler_->remove_reference (); + + ACE_INET_Addr address; + + // We do this make sure the port number the endpoint is listening on + // gets set in the addr. + if (this->connection_handler_->dgram ().get_local_addr (address) != 0) + { + if (TAO_debug_level > 0) + ACE_ERROR ((LM_ERROR, + ACE_TEXT ("TAO (%P|%t) DIOP_Acceptor::open_i ") + ACE_TEXT ("- %p"), + ACE_TEXT ("cannot get local addr\n"))); + return -1; + } + + // Set the port for each addr. If there is more than one network + // interface then the endpoint created on each interface will be on + // the same port. This is how a wildcard socket bind() is supposed + // to work. + u_short const port = address.get_port_number (); + for (size_t j = 0; j < this->endpoint_count_; ++j) + this->addrs_[j].set_port_number (port, 1); + + if (TAO_debug_level > 5) + { + for (size_t i = 0; i < this->endpoint_count_; ++i) + { + ACE_DEBUG ((LM_DEBUG, + ACE_TEXT ("\nTAO (%P|%t) DIOP_Acceptor::open_i - ") + ACE_TEXT ("listening on: <%s:%u>\n"), + ACE_TEXT_CHAR_TO_TCHAR (this->hosts_[i]), + this->addrs_[i].get_port_number ())); + } + } + + return 0; +} + +int +TAO_DIOP_Acceptor::hostname (TAO_ORB_Core *orb_core, + ACE_INET_Addr &addr, + char *&host, + const char *specified_hostname) +{ + if (orb_core->orb_params ()->use_dotted_decimal_addresses ()) + { + // If dotted decimal addresses are enabled, + // just return ours. + return this->dotted_decimal_address (addr, host); + } + else + if (specified_hostname != 0) + { + // If the user specified a hostname, pass it back + // blindly as it overrides our choice of hostname. + host = CORBA::string_dup (specified_hostname); + } + else + { + char tmp_host[MAXHOSTNAMELEN + 1]; + + // Get the hostname associated with our address + if (addr.get_host_name (tmp_host, sizeof (tmp_host)) != 0) + { + // On failure, just return the decimal address. + return this->dotted_decimal_address (addr, host); + } + else + { + host = CORBA::string_dup (tmp_host); + } + } + + return 0; +} + +int +TAO_DIOP_Acceptor::dotted_decimal_address (ACE_INET_Addr &addr, + char *&host) +{ + const char *tmp = addr.get_host_addr (); + if (tmp == 0) + { + if (TAO_debug_level > 0) + ACE_DEBUG ((LM_DEBUG, + ACE_TEXT ("\n\nTAO (%P|%t) ") + ACE_TEXT ("DIOP_Acceptor::dotted_decimal_address ") + ACE_TEXT ("- %p\n\n"), + ACE_TEXT ("cannot determine hostname"))); + return -1; + } + + host = CORBA::string_dup (tmp); + return 0; +} + +int +TAO_DIOP_Acceptor::probe_interfaces (TAO_ORB_Core *orb_core) +{ + // Extract the hostname for each network interface, and then cache + // it. The hostnames will then be used when creating a + // TAO_DIOP_Profile for each endpoint setup on the probed + // network interfaces. + ACE_INET_Addr *if_addrs = 0; + size_t if_cnt = 0; + + if (ACE::get_ip_interfaces (if_cnt, + if_addrs) != 0 + && errno != ENOTSUP) + { + // In the case where errno == ENOTSUP, if_cnt and if_addrs will + // not be modified, and will each remain equal to zero. This + // causes the default interface to be used. + return -1; + } + + if (if_cnt == 0 || if_addrs == 0) + { + if (TAO_debug_level > 0) + { + ACE_DEBUG ((LM_WARNING, + ACE_TEXT ("TAO (%P|%t) Unable to probe network ") + ACE_TEXT ("interfaces. Using default."))); + } + + if_cnt = 1; // Force the network interface count to be one. + delete [] if_addrs; + ACE_NEW_RETURN (if_addrs, + ACE_INET_Addr[if_cnt], + -1); + } + + // Scan for the loopback interface since it shouldn't be included in + // the list of cached hostnames unless it is the only interface. + size_t lo_cnt = 0; // Loopback interface count + for (size_t j = 0; j < if_cnt; ++j) + if (if_addrs[j].get_ip_address () == INADDR_LOOPBACK) + lo_cnt++; + + // The instantiation for this template is in + // tao/DIOP_Connector.cpp. + ACE_Auto_Basic_Array_Ptr<ACE_INET_Addr> safe_if_addrs (if_addrs); + + // If the loopback interface is the only interface then include it + // in the list of interfaces to query for a hostname, otherwise + // exclude it from the list. + if (if_cnt == lo_cnt) + this->endpoint_count_ = static_cast<CORBA::ULong> (if_cnt); + else + this->endpoint_count_ = static_cast<CORBA::ULong> (if_cnt - lo_cnt); + + ACE_NEW_RETURN (this->addrs_, + ACE_INET_Addr[this->endpoint_count_], + -1); + + ACE_NEW_RETURN (this->hosts_, + char *[this->endpoint_count_], + -1); + + ACE_OS::memset (this->hosts_, 0, sizeof (char*) * this->endpoint_count_); + + // The number of hosts/interfaces we want to cache may not be the + // same as the number of detected interfaces so keep a separate + // count. + size_t host_cnt = 0; + + for (size_t i = 0; i < if_cnt; ++i) + { + // Ignore any loopback interface if there are other + // non-loopback interfaces. + if (if_cnt != lo_cnt && + if_addrs[i].get_ip_address() == INADDR_LOOPBACK) + continue; + + if (this->hostname (orb_core, + if_addrs[i], + this->hosts_[host_cnt]) != 0) + return -1; + + // Copy the addr. The port is (re)set in + // TAO_DIOP_Acceptor::open_i(). + if (this->addrs_[host_cnt].set (if_addrs[i]) != 0) + return -1; + + host_cnt++; + } + + return 0; +} + +CORBA::ULong +TAO_DIOP_Acceptor::endpoint_count (void) +{ + return this->endpoint_count_; +} + +int +TAO_DIOP_Acceptor::object_key (IOP::TaggedProfile &profile, + TAO::ObjectKey &object_key) +{ + // Create the decoding stream from the encapsulation in the buffer, +#if (TAO_NO_COPY_OCTET_SEQUENCES == 1) + TAO_InputCDR cdr (profile.profile_data.mb ()); +#else + TAO_InputCDR cdr (reinterpret_cast<char*> (profile.profile_data.get_buffer ()), + profile.profile_data.length ()); +#endif /* TAO_NO_COPY_OCTET_SEQUENCES == 1 */ + + CORBA::Octet major; + CORBA::Octet minor = CORBA::Octet(); + + // Read the version. We just read it here. We don't*do any* + // processing. + if (!(cdr.read_octet (major) + && cdr.read_octet (minor))) + { + if (TAO_debug_level > 0) + { + ACE_DEBUG ((LM_DEBUG, + ACE_TEXT ("TAO (%P|%t) DIOP_Profile::decode - v%d.%d\n"), + major, + minor)); + } + return -1; + } + + CORBA::String_var host; + CORBA::UShort port = 0; + + // Get host and port. No processing here too.. + if (cdr.read_string (host.out ()) == 0 + || cdr.read_ushort (port) == 0) + { + if (TAO_debug_level > 0) + { + ACE_DEBUG ((LM_DEBUG, + ACE_TEXT ("TAO (%P|%t) TAO_DIOP_Acceptor::object_key - ") + ACE_TEXT ("error while decoding host/port"))); + } + return -1; + } + + // ... and object key. + if ((cdr >> object_key) == 0) + return -1; + + // We are NOT bothered about the rest. + + return 1; +} + + +int +TAO_DIOP_Acceptor::parse_options (const char *str) +{ + if (str == 0) + return 0; // No options to parse. Not a problem. + + // Use an option format similar to the one used for CGI scripts in + // HTTP URLs. + // e.g.: option1=foo&option2=bar + + ACE_CString options (str); + + size_t len = options.length (); + + const char option_delimiter = '&'; + + // Count the number of options. + + CORBA::ULong option_count = 1; + // Number of endpoints in the string (initialized to 1). + + // Only check for endpoints after the protocol specification and + // before the object key. + for (size_t i = 0; i < len; ++i) + if (options[i] == option_delimiter) + ++option_count; + + // The idea behind the following loop is to split the options into + // (option, name) pairs. + // For example, + // `option1=foo&option2=bar' + // will be parsed into: + // `option1=foo' + // `option2=bar' + + ACE_CString::size_type begin = 0; + ACE_CString::size_type end = 0; + + for (CORBA::ULong j = 0; j < option_count; ++j) + { + if (j < option_count - 1) + end = options.find (option_delimiter, begin); + else + end = len; + + if (end == begin) + { + ACE_ERROR_RETURN ((LM_ERROR, + ACE_TEXT ("TAO (%P|%t) Zero length DIOP option.\n")), + -1); + } + else if (end != ACE_CString::npos) + { + ACE_CString opt = options.substring (begin, end - begin); + + ACE_CString::size_type const slot = opt.find ("="); + + if (slot == len - 1 + || slot == ACE_CString::npos) + ACE_ERROR_RETURN ((LM_ERROR, + ACE_TEXT ("TAO (%P|%t) DIOP option <%s> is ") + ACE_TEXT ("missing a value.\n"), + ACE_TEXT_CHAR_TO_TCHAR (opt.c_str ())), + -1); + + ACE_CString name = opt.substring (0, slot); + ACE_CString value = opt.substring (slot + 1); + + if (name.length () == 0) + ACE_ERROR_RETURN ((LM_ERROR, + ACE_TEXT ("TAO (%P|%t) Zero length DIOP ") + ACE_TEXT ("option name.\n")), + -1); + + if (name == "priority") + { + ACE_ERROR_RETURN ((LM_ERROR, + ACE_TEXT ("TAO (%P|%t) Invalid DIOP endpoint format: ") + ACE_TEXT ("endpoint priorities no longer supported. \n")), + -1); + } + else + { + ACE_ERROR_RETURN ((LM_ERROR, + ACE_TEXT ("TAO (%P|%t) Invalid DIOP option: <%s>\n"), + ACE_TEXT_CHAR_TO_TCHAR (name.c_str ())), + -1); + } + + begin = end + 1; + } + else + { + break; // No other options. + } + } + return 0; +} + +TAO_END_VERSIONED_NAMESPACE_DECL + +#endif /* TAO_HAS_DIOP && TAO_HAS_DIOP != 0 */ |