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Hyprland/hyprctl/main.cpp

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C++
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#include <ctype.h>
#include <netdb.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/un.h>
#include <unistd.h>
#include <ranges>
#include <algorithm>
#include <signal.h>
#include <format>
#include <iostream>
#include <string>
#include <fstream>
#include <string>
#include <vector>
#include <deque>
#include <filesystem>
#include <stdarg.h>
const std::string USAGE = R"#(usage: hyprctl [(opt)flags] [command] [(opt)args]
commands:
activewindow
activeworkspace
binds
clients
cursorpos
decorations
devices
dismissnotify
dispatch
getoption
globalshortcuts
hyprpaper
instances
keyword
kill
layers
layouts
monitors
notify
plugin
reload
setcursor
seterror
setprop
splash
switchxkblayout
systeminfo
version
workspacerules
workspaces
flags:
-j -> output in JSON
-r -> refresh state after issuing command (e.g. for updating variables)
--batch -> execute a batch of commands, separated by ';'
--instance (-i) -> use a specific instance. Can be either signature or index in hyprctl instances (0, 1, etc)
)#";
#define PAD
std::string instanceSignature;
struct SInstanceData {
std::string id;
uint64_t time;
uint64_t pid;
std::string wlSocket;
bool valid = true;
};
std::vector<SInstanceData> instances() {
std::vector<SInstanceData> result;
for (const auto& el : std::filesystem::directory_iterator("/tmp/hypr")) {
if (el.is_directory() || !el.path().string().ends_with(".lock"))
continue;
// read lock
SInstanceData* data = &result.emplace_back();
data->id = el.path().string();
data->id = data->id.substr(data->id.find_last_of('/') + 1, data->id.find(".lock") - data->id.find_last_of('/') - 1);
try {
data->time = std::stoull(data->id.substr(data->id.find_first_of('_') + 1));
} catch (std::exception& e) { continue; }
// read file
std::ifstream ifs(el.path().string());
int i = 0;
for (std::string line; std::getline(ifs, line); ++i) {
if (i == 0) {
try {
data->pid = std::stoull(line);
} catch (std::exception& e) { continue; }
} else if (i == 1) {
data->wlSocket = line;
} else
break;
}
ifs.close();
}
std::erase_if(result, [&](const auto& el) { return kill(el.pid, 0) != 0 && errno == ESRCH; });
std::sort(result.begin(), result.end(), [&](const auto& a, const auto& b) { return a.time < b.time; });
return result;
}
void request(std::string arg, int minArgs = 0) {
const auto SERVERSOCKET = socket(AF_UNIX, SOCK_STREAM, 0);
const auto ARGS = std::count(arg.begin(), arg.end(), ' ');
if (ARGS < minArgs) {
std::cout << "Not enough arguments, expected at least " << minArgs;
return;
}
if (SERVERSOCKET < 0) {
std::cout << "Couldn't open a socket (1)";
return;
}
if (instanceSignature.empty()) {
std::cout << "HYPRLAND_INSTANCE_SIGNATURE was not set! (Is Hyprland running?)";
return;
}
sockaddr_un serverAddress = {0};
serverAddress.sun_family = AF_UNIX;
std::string socketPath = "/tmp/hypr/" + instanceSignature + "/.socket.sock";
strncpy(serverAddress.sun_path, socketPath.c_str(), sizeof(serverAddress.sun_path) - 1);
if (connect(SERVERSOCKET, (sockaddr*)&serverAddress, SUN_LEN(&serverAddress)) < 0) {
std::cout << "Couldn't connect to " << socketPath << ". (3)";
return;
}
auto sizeWritten = write(SERVERSOCKET, arg.c_str(), arg.length());
if (sizeWritten < 0) {
std::cout << "Couldn't write (4)";
return;
}
std::string reply = "";
char buffer[8192] = {0};
sizeWritten = read(SERVERSOCKET, buffer, 8192);
if (sizeWritten < 0) {
std::cout << "Couldn't read (5)";
return;
}
reply += std::string(buffer, sizeWritten);
while (sizeWritten == 8192) {
sizeWritten = read(SERVERSOCKET, buffer, 8192);
if (sizeWritten < 0) {
std::cout << "Couldn't read (5)";
return;
}
reply += std::string(buffer, sizeWritten);
}
close(SERVERSOCKET);
std::cout << reply;
}
void requestHyprpaper(std::string arg) {
const auto SERVERSOCKET = socket(AF_UNIX, SOCK_STREAM, 0);
if (SERVERSOCKET < 0) {
std::cout << "Couldn't open a socket (1)";
return;
}
if (instanceSignature.empty()) {
std::cout << "HYPRLAND_INSTANCE_SIGNATURE was not set! (Is Hyprland running?)";
return;
}
sockaddr_un serverAddress = {0};
serverAddress.sun_family = AF_UNIX;
std::string socketPath = "/tmp/hypr/" + instanceSignature + "/.hyprpaper.sock";
strncpy(serverAddress.sun_path, socketPath.c_str(), sizeof(serverAddress.sun_path) - 1);
if (connect(SERVERSOCKET, (sockaddr*)&serverAddress, SUN_LEN(&serverAddress)) < 0) {
std::cout << "Couldn't connect to " << socketPath << ". (3)";
return;
}
arg = arg.substr(arg.find_first_of('/') + 1); // strip flags
arg = arg.substr(arg.find_first_of(' ') + 1); // strip "hyprpaper"
auto sizeWritten = write(SERVERSOCKET, arg.c_str(), arg.length());
if (sizeWritten < 0) {
std::cout << "Couldn't write (4)";
return;
}
char buffer[8192] = {0};
sizeWritten = read(SERVERSOCKET, buffer, 8192);
if (sizeWritten < 0) {
std::cout << "Couldn't read (5)";
return;
}
close(SERVERSOCKET);
std::cout << std::string(buffer);
}
void batchRequest(std::string arg) {
std::string rq = "[[BATCH]]" + arg.substr(arg.find_first_of(" ") + 1);
request(rq);
}
void instancesRequest(bool json) {
std::string result = "";
// gather instance data
std::vector<SInstanceData> inst = instances();
if (!json) {
for (auto& el : inst) {
result += std::format("instance {}:\n\ttime: {}\n\tpid: {}\n\twl socket: {}\n\n", el.id, el.time, el.pid, el.wlSocket);
}
} else {
result += '[';
for (auto& el : inst) {
result += std::format(R"#(
{{
"instance": "{}",
"time": {},
"pid": {},
"wl_socket": "{}"
}},)#",
el.id, el.time, el.pid, el.wlSocket);
}
result.pop_back();
result += "\n]";
}
std::cout << result << "\n";
}
std::deque<std::string> splitArgs(int argc, char** argv) {
std::deque<std::string> result;
for (auto i = 1 /* skip the executable */; i < argc; ++i)
result.push_back(std::string(argv[i]));
return result;
}
bool isNumber(const std::string& str, bool allowfloat) {
if (str.empty())
return false;
return std::ranges::all_of(str.begin(), str.end(), [&](char c) { return isdigit(c) != 0 || c == '-' || (allowfloat && c == '.'); });
}
int main(int argc, char** argv) {
bool parseArgs = true;
if (argc < 2) {
printf("%s\n", USAGE.c_str());
return 1;
}
std::string fullRequest = "";
std::string fullArgs = "";
const auto ARGS = splitArgs(argc, argv);
bool json = false;
std::string overrideInstance = "";
for (std::size_t i = 0; i < ARGS.size(); ++i) {
if (ARGS[i] == "--") {
// Stop parsing arguments after --
parseArgs = false;
continue;
}
if (parseArgs && (ARGS[i][0] == '-') && !isNumber(ARGS[i], true) /* For stuff like -2 */) {
// parse
if (ARGS[i] == "-j" && !fullArgs.contains("j")) {
fullArgs += "j";
json = true;
} else if (ARGS[i] == "-r" && !fullArgs.contains("r")) {
fullArgs += "r";
} else if (ARGS[i] == "-a" && !fullArgs.contains("a")) {
fullArgs += "a";
} else if (ARGS[i] == "--batch") {
fullRequest = "--batch ";
} else if (ARGS[i] == "--instance" || ARGS[i] == "-i") {
++i;
if (i >= ARGS.size()) {
printf("%s\n", USAGE.c_str());
return 1;
}
overrideInstance = ARGS[i];
} else {
printf("%s\n", USAGE.c_str());
return 1;
}
continue;
}
fullRequest += ARGS[i] + " ";
}
if (fullRequest.empty()) {
printf("%s\n", USAGE.c_str());
return 1;
}
fullRequest.pop_back(); // remove trailing space
fullRequest = fullArgs + "/" + fullRequest;
// instances is HIS-independent
if (fullRequest.contains("/instances")) {
instancesRequest(json);
return 0;
}
if (overrideInstance.contains("_"))
instanceSignature = overrideInstance;
else if (!overrideInstance.empty()) {
if (!isNumber(overrideInstance, false)) {
std::cout << "instance invalid\n";
return 1;
}
const auto INSTANCENO = std::stoi(overrideInstance);
const auto INSTANCES = instances();
if (INSTANCENO < 0 || static_cast<std::size_t>(INSTANCENO) >= INSTANCES.size()) {
std::cout << "no such instance\n";
return 1;
}
instanceSignature = INSTANCES[INSTANCENO].id;
} else {
const auto ISIG = getenv("HYPRLAND_INSTANCE_SIGNATURE");
if (!ISIG) {
std::cout << "HYPRLAND_INSTANCE_SIGNATURE not set! (is hyprland running?)\n";
return 1;
}
instanceSignature = ISIG;
}
int exitStatus = 0;
if (fullRequest.contains("/--batch"))
batchRequest(fullRequest);
else if (fullRequest.contains("/hyprpaper"))
requestHyprpaper(fullRequest);
else if (fullRequest.contains("/switchxkblayout"))
request(fullRequest, 2);
else if (fullRequest.contains("/seterror"))
request(fullRequest, 1);
else if (fullRequest.contains("/setprop"))
request(fullRequest, 3);
else if (fullRequest.contains("/plugin"))
request(fullRequest, 1);
else if (fullRequest.contains("/dismissnotify"))
request(fullRequest, 0);
else if (fullRequest.contains("/notify"))
request(fullRequest, 2);
else if (fullRequest.contains("/output"))
request(fullRequest, 2);
else if (fullRequest.contains("/setcursor"))
request(fullRequest, 1);
else if (fullRequest.contains("/dispatch"))
request(fullRequest, 1);
else if (fullRequest.contains("/keyword"))
request(fullRequest, 2);
else if (fullRequest.contains("/decorations"))
request(fullRequest, 1);
else if (fullRequest.contains("/--help"))
printf("%s", USAGE.c_str());
else {
request(fullRequest);
}
printf("\n");
return exitStatus;
}
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