Core: Add a test suite (#9297)

Adds a test suite for testing hyprland's features with a runtime tester

---------

Co-authored-by: Mihai Fufezan <mihai@fufexan.net>

hyprtester/src/hyprctlCompat.cpp

@@ -0,0 +1,136 @@
+#include "hyprctlCompat.hpp"
+#include "shared.hpp"
+
+#include <pwd.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+#include <filesystem>
+#include <fstream>
+#include <algorithm>
+#include <csignal>
+#include <cerrno>
+#include <print>
+
+static int getUID() {
+    const auto UID   = getuid();
+    const auto PWUID = getpwuid(UID);
+    return PWUID ? PWUID->pw_uid : UID;
+}
+
+static std::string getRuntimeDir() {
+    const auto XDG = getenv("XDG_RUNTIME_DIR");
+
+    if (!XDG) {
+        const std::string USERID = std::to_string(getUID());
+        return "/run/user/" + USERID + "/hypr";
+    }
+
+    return std::string{XDG} + "/hypr";
+}
+
+std::vector<SInstanceData> instances() {
+    std::vector<SInstanceData> result;
+
+    try {
+        if (!std::filesystem::exists(getRuntimeDir()))
+            return {};
+    } catch (std::exception& e) { return {}; }
+
+    for (const auto& el : std::filesystem::directory_iterator(getRuntimeDir())) {
+        if (!el.is_directory() || !std::filesystem::exists(el.path().string() + "/hyprland.lock"))
+            continue;
+
+        // read lock
+        SInstanceData* data = &result.emplace_back();
+        data->id            = el.path().filename().string();
+
+        try {
+            data->time = std::stoull(data->id.substr(data->id.find_first_of('_') + 1, data->id.find_last_of('_') - (data->id.find_first_of('_') + 1)));
+        } catch (std::exception& e) { continue; }
+
+        // read file
+        std::ifstream ifs(el.path().string() + "/hyprland.lock");
+
+        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;
+}
+
+std::string getFromSocket(const std::string& cmd) {
+    const auto SERVERSOCKET = socket(AF_UNIX, SOCK_STREAM, 0);
+
+    auto       t = timeval{.tv_sec = 5, .tv_usec = 0};
+    setsockopt(SERVERSOCKET, SOL_SOCKET, SO_RCVTIMEO, &t, sizeof(struct timeval));
+
+    if (SERVERSOCKET < 0) {
+        std::println("socket: Couldn't open a socket (1)");
+        return "";
+    }
+
+    sockaddr_un serverAddress = {0};
+    serverAddress.sun_family  = AF_UNIX;
+
+    std::string socketPath = getRuntimeDir() + "/" + HIS + "/.socket.sock";
+
+    strncpy(serverAddress.sun_path, socketPath.c_str(), sizeof(serverAddress.sun_path) - 1);
+
+    if (connect(SERVERSOCKET, (sockaddr*)&serverAddress, SUN_LEN(&serverAddress)) < 0) {
+        std::println("Couldn't connect to {}. (3)", socketPath);
+        return "";
+    }
+
+    auto sizeWritten = write(SERVERSOCKET, cmd.c_str(), cmd.length());
+
+    if (sizeWritten < 0) {
+        std::println("Couldn't write (4)");
+        return "";
+    }
+
+    std::string reply        = "";
+    char        buffer[8192] = {0};
+
+    sizeWritten = read(SERVERSOCKET, buffer, 8192);
+
+    if (sizeWritten < 0) {
+        if (errno == EWOULDBLOCK)
+            std::println("Hyprland IPC didn't respond in time");
+        std::println("Couldn't read (5)");
+        return "";
+    }
+
+    reply += std::string(buffer, sizeWritten);
+
+    while (sizeWritten == 8192) {
+        sizeWritten = read(SERVERSOCKET, buffer, 8192);
+        if (sizeWritten < 0) {
+            std::println("Couldn't read (5)");
+            return "";
+        }
+        reply += std::string(buffer, sizeWritten);
+    }
+
+    close(SERVERSOCKET);
+
+    return reply;
+}