133 lines
3.5 KiB
C++
133 lines
3.5 KiB
C++
#include "modules/sway/ipc/client.hpp"
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waybar::modules::sway::Ipc::Ipc()
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: fd_(-1), fd_event_(-1)
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{}
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waybar::modules::sway::Ipc::~Ipc()
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{
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close(fd_);
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close(fd_event_);
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}
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const std::string waybar::modules::sway::Ipc::getSocketPath() const
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{
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const char *env = getenv("SWAYSOCK");
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if (env != nullptr) {
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return std::string(env);
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}
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std::string str;
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{
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std::string str_buf;
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FILE* in;
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char buf[512] = { 0 };
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if ((in = popen("sway --get-socketpath 2>/dev/null", "r")) == nullptr) {
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throw std::runtime_error("Failed to get socket path");
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}
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while (fgets(buf, sizeof(buf), in) != nullptr) {
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str_buf.append(buf, sizeof(buf));
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}
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pclose(in);
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str = str_buf;
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}
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if (str.back() == '\n') {
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str.pop_back();
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}
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return str;
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}
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int waybar::modules::sway::Ipc::open(const std::string& socketPath) const
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{
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struct sockaddr_un addr = {0};
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int fd = -1;
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if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
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throw std::runtime_error("Unable to open Unix socket");
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}
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addr.sun_family = AF_UNIX;
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strncpy(addr.sun_path, socketPath.c_str(), sizeof(addr.sun_path) - 1);
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addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
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int l = sizeof(struct sockaddr_un);
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if (::connect(fd, reinterpret_cast<struct sockaddr *>(&addr), l) == -1) {
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throw std::runtime_error("Unable to connect to Sway");
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}
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return fd;
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}
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void waybar::modules::sway::Ipc::connect()
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{
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const std::string& socketPath = getSocketPath();
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fd_ = open(socketPath);
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fd_event_ = open(socketPath);
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}
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struct waybar::modules::sway::Ipc::ipc_response
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waybar::modules::sway::Ipc::recv(int fd) const
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{
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std::string header;
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header.reserve(ipc_header_size_);
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auto data32 = reinterpret_cast<uint32_t *>(header.data() + ipc_magic_.size());
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size_t total = 0;
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while (total < ipc_header_size_) {
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auto res = ::recv(fd, header.data() + total, ipc_header_size_ - total, 0);
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if (res <= 0) {
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throw std::runtime_error("Unable to receive IPC response");
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}
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total += res;
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}
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total = 0;
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std::string payload;
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payload.reserve(data32[0] + 1);
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while (total < data32[0]) {
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auto res = ::recv(fd, payload.data() + total, data32[0] - total, 0);
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if (res < 0) {
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throw std::runtime_error("Unable to receive IPC response");
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}
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total += res;
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}
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payload[data32[0]] = 0;
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return { data32[0], data32[1], &payload.front() };
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}
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struct waybar::modules::sway::Ipc::ipc_response
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waybar::modules::sway::Ipc::send(int fd, uint32_t type,
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const std::string& payload) const
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{
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std::string header;
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header.reserve(ipc_header_size_);
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auto data32 = reinterpret_cast<uint32_t *>(header.data() + ipc_magic_.size());
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memcpy(header.data(), ipc_magic_.c_str(), ipc_magic_.size());
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data32[0] = payload.size();
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data32[1] = type;
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if (::send(fd, header.data(), ipc_header_size_, 0) == -1) {
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throw std::runtime_error("Unable to send IPC header");
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}
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if (::send(fd, payload.c_str(), payload.size(), 0) == -1) {
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throw std::runtime_error("Unable to send IPC payload");
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}
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return recv(fd);
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}
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struct waybar::modules::sway::Ipc::ipc_response
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waybar::modules::sway::Ipc::sendCmd(uint32_t type,
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const std::string& payload) const
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{
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return send(fd_, type, payload);
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}
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void waybar::modules::sway::Ipc::subscribe(const std::string& payload) const
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{
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auto res = send(fd_event_, IPC_SUBSCRIBE, payload);
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if (res.payload != "{\"success\": true}") {
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throw std::runtime_error("Unable to subscribe ipc event");
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}
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}
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struct waybar::modules::sway::Ipc::ipc_response
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waybar::modules::sway::Ipc::handleEvent() const
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{
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return recv(fd_event_);
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}
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