summaryrefslogtreecommitdiffstats
path: root/Source/cmConnection.cxx
blob: 28ba12c4bb2b68e05489ec1e57b4ae2826c1042e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing for details.  */
#include "cmConnection.h"

#include "cmServer.h"
#include "cm_uv.h"

#include <cassert>
#include <cstring>

struct write_req_t
{
  uv_write_t req;
  uv_buf_t buf;
};

void cmEventBasedConnection::on_alloc_buffer(uv_handle_t* handle,
                                             size_t suggested_size,
                                             uv_buf_t* buf)
{
  (void)(handle);
  char* rawBuffer = new char[suggested_size];
  *buf = uv_buf_init(rawBuffer, static_cast<unsigned int>(suggested_size));
}

void cmEventBasedConnection::on_read(uv_stream_t* stream, ssize_t nread,
                                     const uv_buf_t* buf)
{
  auto conn = reinterpret_cast<cmEventBasedConnection*>(stream->data);
  if (conn) {
    if (nread >= 0) {
      conn->ReadData(std::string(buf->base, buf->base + nread));
    } else {
      conn->OnDisconnect(static_cast<int>(nread));
    }
  }

  delete[](buf->base);
}

void cmEventBasedConnection::on_close(uv_handle_t* /*handle*/)
{
}

void cmEventBasedConnection::on_write(uv_write_t* req, int status)
{
  (void)(status);

  // Free req and buffer
  write_req_t* wr = reinterpret_cast<write_req_t*>(req);
  delete[](wr->buf.base);
  delete wr;
}

void cmEventBasedConnection::on_new_connection(uv_stream_t* stream, int status)
{
  (void)(status);
  auto conn = reinterpret_cast<cmEventBasedConnection*>(stream->data);

  if (conn) {
    conn->Connect(stream);
  }
}

bool cmEventBasedConnection::IsOpen() const
{
  return this->WriteStream != nullptr;
}

void cmEventBasedConnection::WriteData(const std::string& _data)
{
#ifndef NDEBUG
  auto curr_thread_id = uv_thread_self();
  assert(this->Server);
  assert(uv_thread_equal(&curr_thread_id, &this->Server->ServeThreadId));
#endif

  auto data = _data;
  assert(this->WriteStream);
  if (BufferStrategy) {
    data = BufferStrategy->BufferOutMessage(data);
  }

  auto ds = data.size();

  write_req_t* req = new write_req_t;
  req->req.data = this;
  req->buf = uv_buf_init(new char[ds], static_cast<unsigned int>(ds));
  memcpy(req->buf.base, data.c_str(), ds);
  uv_write(reinterpret_cast<uv_write_t*>(req),
           static_cast<uv_stream_t*>(this->WriteStream), &req->buf, 1,
           on_write);
}

void cmEventBasedConnection::ReadData(const std::string& data)
{
  this->RawReadBuffer += data;
  if (BufferStrategy) {
    std::string packet = BufferStrategy->BufferMessage(this->RawReadBuffer);
    while (!packet.empty()) {
      ProcessRequest(packet);
      packet = BufferStrategy->BufferMessage(this->RawReadBuffer);
    }
  } else {
    ProcessRequest(this->RawReadBuffer);
    this->RawReadBuffer.clear();
  }
}

cmEventBasedConnection::cmEventBasedConnection(
  cmConnectionBufferStrategy* bufferStrategy)
  : BufferStrategy(bufferStrategy)
{
}

void cmEventBasedConnection::Connect(uv_stream_t* server)
{
  (void)server;
  Server->OnConnected(nullptr);
}

void cmEventBasedConnection::OnDisconnect(int onerror)
{
  (void)onerror;
  this->OnConnectionShuttingDown();
  if (this->Server) {
    this->Server->OnDisconnect(this);
  }
}

cmConnection::~cmConnection()
{
}

bool cmConnection::OnConnectionShuttingDown()
{
  this->Server = nullptr;
  return true;
}

void cmConnection::SetServer(cmServerBase* s)
{
  Server = s;
}

void cmConnection::ProcessRequest(const std::string& request)
{
  Server->ProcessRequest(this, request);
}

bool cmConnection::OnServeStart(std::string* errString)
{
  (void)errString;
  return true;
}

bool cmEventBasedConnection::OnConnectionShuttingDown()
{
  if (this->WriteStream) {
    this->WriteStream->data = nullptr;
  }
  if (this->ReadStream) {
    this->ReadStream->data = nullptr;
  }
  this->ReadStream = nullptr;
  this->WriteStream = nullptr;
  return true;
}