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