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
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmServerConnection.h"
#include "cmConfigure.h"
#include "cmServer.h"
#include "cmServerDictionary.h"
#include "cm_uv.h"
#ifdef _WIN32
# include "io.h"
#else
# include <unistd.h>
#endif
#include <cassert>
#include <utility>
cmStdIoConnection::cmStdIoConnection(
cmConnectionBufferStrategy* bufferStrategy)
: cmEventBasedConnection(bufferStrategy)
{
}
cm::uv_stream_ptr cmStdIoConnection::SetupStream(int file_id)
{
switch (uv_guess_handle(file_id)) {
case UV_TTY: {
cm::uv_tty_ptr tty;
tty.init(*this->Server->GetLoop(), file_id, file_id == 0,
static_cast<cmEventBasedConnection*>(this));
uv_tty_set_mode(tty, UV_TTY_MODE_NORMAL);
return { std::move(tty) };
}
case UV_FILE:
if (file_id == 0) {
return nullptr;
}
// Intentional fallthrough; stdin can _not_ be treated as a named
// pipe, however stdout can be.
CM_FALLTHROUGH;
case UV_NAMED_PIPE: {
cm::uv_pipe_ptr pipe;
pipe.init(*this->Server->GetLoop(), 0,
static_cast<cmEventBasedConnection*>(this));
uv_pipe_open(pipe, file_id);
return { std::move(pipe) };
}
default:
assert(false && "Unable to determine stream type");
return nullptr;
}
}
void cmStdIoConnection::SetServer(cmServerBase* s)
{
cmConnection::SetServer(s);
if (!s) {
return;
}
this->ReadStream = SetupStream(0);
this->WriteStream = SetupStream(1);
}
void shutdown_connection(uv_prepare_t* prepare)
{
cmStdIoConnection* connection =
static_cast<cmStdIoConnection*>(prepare->data);
if (!uv_is_closing(reinterpret_cast<uv_handle_t*>(prepare))) {
uv_close(reinterpret_cast<uv_handle_t*>(prepare),
&cmEventBasedConnection::on_close_delete<uv_prepare_t>);
}
connection->OnDisconnect(0);
}
bool cmStdIoConnection::OnServeStart(std::string* pString)
{
Server->OnConnected(this);
if (this->ReadStream.get()) {
uv_read_start(this->ReadStream, on_alloc_buffer, on_read);
} else if (uv_guess_handle(0) == UV_FILE) {
char buffer[1024];
while (auto len = read(0, buffer, sizeof(buffer))) {
ReadData(std::string(buffer, buffer + len));
}
// We can't start the disconnect from here, add a prepare hook to do that
// for us
auto prepare = new uv_prepare_t();
prepare->data = this;
uv_prepare_init(Server->GetLoop(), prepare);
uv_prepare_start(prepare, shutdown_connection);
}
return cmConnection::OnServeStart(pString);
}
bool cmStdIoConnection::OnConnectionShuttingDown()
{
if (ReadStream.get()) {
uv_read_stop(ReadStream);
ReadStream->data = nullptr;
}
this->ReadStream.reset();
cmEventBasedConnection::OnConnectionShuttingDown();
return true;
}
cmServerPipeConnection::cmServerPipeConnection(const std::string& name)
: cmPipeConnection(name, new cmServerBufferStrategy)
{
}
cmServerStdIoConnection::cmServerStdIoConnection()
: cmStdIoConnection(new cmServerBufferStrategy)
{
}
cmConnectionBufferStrategy::~cmConnectionBufferStrategy() = default;
void cmConnectionBufferStrategy::clear()
{
}
std::string cmServerBufferStrategy::BufferOutMessage(
const std::string& rawBuffer) const
{
return std::string("\n") + kSTART_MAGIC + std::string("\n") + rawBuffer +
kEND_MAGIC + std::string("\n");
}
std::string cmServerBufferStrategy::BufferMessage(std::string& RawReadBuffer)
{
for (;;) {
auto needle = RawReadBuffer.find('\n');
if (needle == std::string::npos) {
return "";
}
std::string line = RawReadBuffer.substr(0, needle);
const auto ls = line.size();
if (ls > 1 && line.at(ls - 1) == '\r') {
line.erase(ls - 1, 1);
}
RawReadBuffer.erase(RawReadBuffer.begin(),
RawReadBuffer.begin() + static_cast<long>(needle) + 1);
if (line == kSTART_MAGIC) {
RequestBuffer.clear();
continue;
}
if (line == kEND_MAGIC) {
std::string rtn;
rtn.swap(this->RequestBuffer);
return rtn;
}
this->RequestBuffer += line;
this->RequestBuffer += "\n";
}
}
|
