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
|
#include "connection.h"
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>
#include <unistd.h>
int GetProcessId()
{
return ::getpid();
}
struct BaseConnectionUnix : public BaseConnection {
int sock{-1};
};
static BaseConnectionUnix Connection;
static sockaddr_un PipeAddr{};
#ifdef MSG_NOSIGNAL
static int MsgFlags = MSG_NOSIGNAL;
#else
static int MsgFlags = 0;
#endif
static const char* GetTempPath()
{
const char* temp = getenv("XDG_RUNTIME_DIR");
temp = temp ? temp : getenv("TMPDIR");
temp = temp ? temp : getenv("TMP");
temp = temp ? temp : getenv("TEMP");
temp = temp ? temp : "/tmp";
return temp;
}
/*static*/ BaseConnection* BaseConnection::Create()
{
PipeAddr.sun_family = AF_UNIX;
return &Connection;
}
/*static*/ void BaseConnection::Destroy(BaseConnection*& c)
{
auto self = reinterpret_cast<BaseConnectionUnix*>(c);
self->Close();
c = nullptr;
}
bool BaseConnection::Open()
{
const char* tempPath = GetTempPath();
auto self = reinterpret_cast<BaseConnectionUnix*>(this);
self->sock = socket(AF_UNIX, SOCK_STREAM, 0);
if (self->sock == -1) {
return false;
}
fcntl(self->sock, F_SETFL, O_NONBLOCK);
#ifdef SO_NOSIGPIPE
int optval = 1;
setsockopt(self->sock, SOL_SOCKET, SO_NOSIGPIPE, &optval, sizeof(optval));
#endif
for (int pipeNum = 0; pipeNum < 10; ++pipeNum) {
snprintf(
PipeAddr.sun_path, sizeof(PipeAddr.sun_path), "%s/discord-ipc-%d", tempPath, pipeNum);
int err = connect(self->sock, (const sockaddr*)&PipeAddr, sizeof(PipeAddr));
if (err == 0) {
self->isOpen = true;
return true;
}
}
self->Close();
return false;
}
bool BaseConnection::Close()
{
auto self = reinterpret_cast<BaseConnectionUnix*>(this);
if (self->sock == -1) {
return false;
}
close(self->sock);
self->sock = -1;
self->isOpen = false;
return true;
}
bool BaseConnection::Write(const void* data, size_t length)
{
auto self = reinterpret_cast<BaseConnectionUnix*>(this);
if (self->sock == -1) {
return false;
}
ssize_t sentBytes = send(self->sock, data, length, MsgFlags);
if (sentBytes < 0) {
Close();
}
return sentBytes == (ssize_t)length;
}
bool BaseConnection::Read(void* data, size_t length)
{
auto self = reinterpret_cast<BaseConnectionUnix*>(this);
if (self->sock == -1) {
return false;
}
int res = (int)recv(self->sock, data, length, MsgFlags);
if (res < 0) {
if (errno == EAGAIN) {
return false;
}
Close();
}
else if (res == 0) {
Close();
}
return res == (int)length;
}
|
