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/** @file
A brief file description
@section license License
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include "Http2SessionAccept.h"
#include "Http2ClientSession.h"
#include "I_Machine.h"
#include "../IPAllow.h"
Http2SessionAccept::Http2SessionAccept(const HttpSessionAccept::Options &_o) : SessionAccept(nullptr), options(_o)
{
SET_HANDLER(&Http2SessionAccept::mainEvent);
}
Http2SessionAccept::~Http2SessionAccept() = default;
bool
Http2SessionAccept::accept(NetVConnection *netvc, MIOBuffer *iobuf, IOBufferReader *reader)
{
sockaddr const *client_ip = nullptr;
for (int i = 0; i < IpAllow::Subject::MAX_SUBJECTS; ++i) {
if (IpAllow::Subject::PEER == IpAllow::subjects[i]) {
client_ip = netvc->get_remote_addr();
break;
} else if (IpAllow::Subject::PROXY == IpAllow::subjects[i] &&
netvc->get_proxy_protocol_version() != ProxyProtocolVersion::UNDEFINED) {
client_ip = netvc->get_proxy_protocol_src_addr();
break;
}
}
IpAllow::ACL session_acl = IpAllow::match(client_ip, IpAllow::SRC_ADDR);
if (!session_acl.isValid()) {
ip_port_text_buffer ipb;
Warning("HTTP/2 client '%s' prohibited by ip-allow policy", ats_ip_ntop(client_ip, ipb, sizeof(ipb)));
return false;
}
netvc->attributes = this->options.transport_type;
if (is_debug_tag_set("http2_seq")) {
ip_port_text_buffer ipb;
Debug("http2_seq", "[HttpSessionAccept2:mainEvent %p] accepted connection from %s transport type = %d", netvc,
ats_ip_nptop(client_ip, ipb, sizeof(ipb)), netvc->attributes);
}
Http2ClientSession *new_session = THREAD_ALLOC_INIT(http2ClientSessionAllocator, this_ethread());
new_session->acl = std::move(session_acl);
new_session->accept_options = &options;
// Pin session to current ET_NET thread
new_session->setThreadAffinity(this_ethread());
new_session->new_connection(netvc, iobuf, reader);
return true;
}
int
Http2SessionAccept::mainEvent(int event, void *data)
{
ink_release_assert(event == NET_EVENT_ACCEPT || event == EVENT_ERROR);
ink_release_assert((event == NET_EVENT_ACCEPT) ? (data != nullptr) : (1));
if (event == NET_EVENT_ACCEPT) {
NetVConnection *netvc = static_cast<NetVConnection *>(data);
if (!this->accept(netvc, nullptr, nullptr)) {
netvc->do_io_close();
}
return EVENT_CONT;
}
// XXX We should hoist the error handling so that all the protocols generate the statistics
// without code duplication.
if (((long)data) == -ECONNABORTED) {
HTTP_SUM_DYN_STAT(http_ua_msecs_counts_errors_pre_accept_hangups_stat, 0);
}
ink_abort("HTTP/2 accept received fatal error: errno = %d", -(static_cast<int>((intptr_t)data)));
return EVENT_CONT;
}
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