ModMaker start (#163)

做了个Mod制作器的壳
修手气卡bug
修旁观/重连看不到标记
优化Card元表实现

.gitignore

@@ -16,6 +16,7 @@ tags
 
 # file produced by game
 /FreeKill
+/mymod
 FreeKill.exe
 freekill-wrap.cxx
 server/users.db

Fk/ModMaker/CreateSomething.qml

@@ -0,0 +1,50 @@
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Layouts
+
+ColumnLayout {
+  id: root
+  anchors.fill: parent
+  anchors.margins: 16
+  signal finished()
+  signal accepted(string result)
+
+  property string head
+  property string hint
+
+  Text {
+    text: qsTr(head)
+    font.pixelSize: 20
+    font.bold: true
+    Layout.fillWidth: true
+    wrapMode: Text.WrapAnywhere
+  }
+
+  Text {
+    text: qsTr(hint)
+    Layout.fillWidth: true
+    wrapMode: Text.WrapAnywhere
+  }
+
+  Text {
+    text: qsTr("validator_hint")
+    Layout.fillWidth: true
+    wrapMode: Text.WrapAnywhere
+  }
+
+  TextField {
+    id: edit
+    font.pixelSize: 18
+    Layout.fillWidth: true
+    validator: RegularExpressionValidator { regularExpression: /[0-9A-Za-z_]+/ }
+  }
+
+  Button {
+    text: "OK"
+    enabled: edit.text.length >= 4
+    onClicked: {
+      accepted(edit.text);
+      finished();
+    }
+  }
+}

Fk/ModMaker/ModConfig.qml

@@ -0,0 +1,36 @@
+import QtQuick
+
+QtObject {
+  property var conf
+
+  property string userName
+  property string email
+  property var modList: []
+
+  function loadConf() {
+    conf = JSON.parse(ModBackend.readFile("mymod/config.json"));
+    userName = conf.userName ?? "";
+    email = conf.email ?? "";
+    modList = conf.modList ?? [];
+  }
+
+  function saveConf() {
+    conf.userName = userName;
+    conf.email = email;
+    conf.modList = modList;
+
+    ModBackend.saveToFile("mymod/config.json", JSON.stringify(conf, undefined, 2));
+  }
+
+  function addMod(mod) {
+    modList.push(mod);
+    saveConf();
+    modListChanged();
+  }
+
+  function removeMod(mod) {
+    modList.splice(modList.indexOf(mod), 1);
+    saveConf();
+    modListChanged();
+  }
+}

Fk/ModMaker/ModInit.qml

@@ -0,0 +1,113 @@
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Layouts
+
+Item {
+  id: root
+  property bool configOK: modConfig.userName !== "" && modConfig.email !== ""
+
+  ToolBar {
+    id: bar
+    width: parent.width
+    RowLayout {
+      anchors.fill: parent
+      ToolButton {
+        icon.source: AppPath + "/image/modmaker/back"
+        onClicked: mainStack.pop();
+      }
+      Label {
+        text: qsTr("ModMaker")
+        horizontalAlignment: Qt.AlignHCenter
+        Layout.fillWidth: true
+      }
+      ToolButton {
+        icon.source: AppPath + "/image/modmaker/menu"
+        onClicked: {
+          dialog.source = "UserInfo.qml";
+          drawer.open();
+        }
+      }
+    }
+  }
+
+  Rectangle {
+    width: parent.width
+    height: parent.height - bar.height
+    anchors.top: bar.bottom
+    color: "snow"
+    opacity: 0.75
+
+    Text {
+      anchors.centerIn: parent
+      text: root.configOK ? "" : qsTr("config is incomplete")
+    }
+
+    ListView {
+      anchors.fill: parent
+      model: modConfig.modList
+      delegate: Text { text: modelData }
+    }
+  }
+
+  RoundButton {
+    visible: root.configOK
+    anchors.right: parent.right
+    anchors.bottom: parent.bottom
+    anchors.margins: 40
+    scale: 2
+    icon.source: AppPath + "/image/modmaker/add"
+    onClicked: {
+      dialog.source = "CreateSomething.qml";
+      dialog.item.head = "create_mod";
+      dialog.item.hint = "create_mod_hint";
+      drawer.open();
+      dialog.item.accepted.connect((name) => {
+        createNewMod(name);
+      });
+    }
+  }
+
+  Drawer {
+    id: drawer
+    width: parent.width * 0.4 / mainWindow.scale
+    height: parent.height / mainWindow.scale
+    dim: false
+    clip: true
+    dragMargin: 0
+    scale: mainWindow.scale
+    transformOrigin: Item.TopLeft
+
+    Loader {
+      id: dialog
+      anchors.fill: parent
+      onSourceChanged: {
+        if (item === null)
+          return;
+        item.finished.connect(() => {
+          sourceComponent = undefined;
+          drawer.close();
+        });
+      }
+      onSourceComponentChanged: sourceChanged();
+    }
+  }
+
+  function createNewMod(name) {
+    const banned = [ "test", "standard", "standard_cards", "maneuvering" ];
+    if (banned.indexOf(name) !== -1 || modConfig.modList.indexOf(name) !== -1) {
+      toast.show(qsTr("cannot use this mod name"));
+      return;
+    }
+    ModBackend.createMod(name);
+    const modInfo = {
+      name: name,
+      descrption: "",
+      author: modConfig.userName,
+    };
+    ModBackend.saveToFile(`mymod/${name}/mod.json`, JSON.stringify(modInfo, undefined, 2));
+    ModBackend.saveToFile(`mymod/${name}/.gitignore`, "init.lua");
+    ModBackend.stageFiles(name);
+    ModBackend.commitChanges(name, "Initial commit", modConfig.userName, modConfig.email);
+    modConfig.addMod(name);
+  }
+}

Fk/ModMaker/UserInfo.qml

@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Layouts
+
+ColumnLayout {
+  anchors.fill: parent
+  anchors.margins: 16
+  signal finished()
+
+  Text {
+    text: qsTr("help_text")
+    Layout.fillWidth: true
+    wrapMode: Text.WrapAnywhere
+  }
+
+  RowLayout {
+    anchors.rightMargin: 8
+    spacing: 16
+    Text {
+      text: qsTr("username")
+    }
+    TextField {
+      id: userName
+      font.pixelSize: 18
+      text: modConfig.userName
+      Layout.fillWidth: true
+      onTextChanged: {
+        modConfig.userName = text;
+        modConfig.saveConf();
+      }
+    }
+  }
+
+  RowLayout {
+    anchors.rightMargin: 8
+    spacing: 16
+    Text {
+      text: qsTr("email")
+    }
+    TextField {
+      id: emailAddr
+      font.pixelSize: 18
+      Layout.fillWidth: true
+      text: modConfig.email
+      onTextChanged: {
+        modConfig.email = text;
+        modConfig.saveConf();
+      }
+    }
+  }
+
+  Text {
+    text: qsTr("key_help_text")
+    Layout.fillWidth: true
+    wrapMode: Text.WrapAnywhere
+    textFormat: Text.RichText
+    onLinkActivated: Qt.openUrlExternally(link);
+  }
+
+  Button {
+    text: qsTr("copy pubkey")
+    Layout.fillWidth: true
+    onClicked: {
+      const key = "mymod/id_rsa.pub";
+      if (!Backend.exists(key)) {
+        ModBackend.initKey();
+      }
+      const pubkey = ModBackend.readFile(key);
+      Backend.copyToClipboard(pubkey);
+      toast.show(qsTr("pubkey copied"));
+    }
+  }
+}

Fk/ModMaker/main.qml

@@ -0,0 +1,55 @@
+import QtQuick
+import QtQuick.Controls
+
+Item {
+  Component { id: modInit; ModInit {} }
+
+  StackView {
+    id: modStack
+    anchors.fill: parent
+    pushEnter: Transition {
+      PropertyAnimation {
+        property: "opacity"
+        from: 0
+        to:1
+        duration: 200
+      }
+    }
+    pushExit: Transition {
+      PropertyAnimation {
+        property: "opacity"
+        from: 1
+        to:0
+        duration: 200
+      }
+    }
+    popEnter: Transition {
+      PropertyAnimation {
+        property: "opacity"
+        from: 0
+        to:1
+        duration: 200
+      }
+    }
+    popExit: Transition {
+      PropertyAnimation {
+        property: "opacity"
+        from: 1
+        to:0
+        duration: 200
+      }
+    }
+  }
+
+  ModConfig {
+    id: modConfig
+  }
+
+  Component.onCompleted: {
+    if (!ModBackend) {
+      Backend.createModBackend();
+    }
+    modConfig.loadConf();
+    modStack.push(modInit);
+  }
+}

Fk/ModMaker/qmldir

@@ -0,0 +1,2 @@
+module Fk.ModMaker
+ModMaker 1.0 main.qml

Fk/Pages/About.qml

@@ -54,6 +54,7 @@ Item {
               wrapMode: Text.WordWrap
               textFormat: Text.MarkdownText
               font.pixelSize: 18
+              onLinkActivated: Qt.openUrlExternally(link);
             }
           }
         }

Fk/Pages/Init.qml

@@ -183,6 +183,16 @@ Item {
     }
   }
 
+  // Temp
+  Button {
+    text: qsTr("Mod Making")
+    anchors.right: parent.right
+    anchors.bottom: parent.bottom
+    onClicked: {
+      mainStack.push(modMaker);
+    }
+  }
+
   function downloadComplete() {
     toast.show(qsTr("updated packages for md5"));
   }

Fk/Pages/ModMaker.qml

@@ -0,0 +1,3 @@
+import Fk.ModMaker as Md
+
+Md.ModMaker {}

Fk/Pages/qmldir

@@ -10,3 +10,4 @@ ModesOverview 1.0 ModesOverview.qml
 PackageManage 1.0 PackageManage.qml
 Room 1.0 Room.qml
 TileButton 1.0 TileButton.qml
+ModMaker 1.0 ModMaker.qml

Fk/main.qml

@@ -51,6 +51,7 @@ Item {
 
   Component { id: init; Init {} }
   Component { id: packageManage; PackageManage {} }
+  Component { id: modMaker; ModMaker {} }
   Component { id: lobby; Lobby {} }
   Component { id: generalsOverview; GeneralsOverview {} }
   Component { id: cardsOverview; CardsOverview {} }

lang/zh_CN.ts

@@ -79,6 +79,10 @@
     <source>PackageManage</source>
     <translation>管理拓展包</translation>
   </message>
+  <message>
+    <source>Mod Making</source>
+    <translation>制作Mod</translation>
+  </message>
   <message>
     <source>Welcome back!</source>
     <translation>欢迎回来！</translation>
@@ -212,4 +216,67 @@
     <translation>已复制。</translation>
   </message>
 </context>
+
+<context>
+  <name>ModInit</name>
+  <message>
+    <source>ModMaker</source>
+    <translation>新月杀Mod制作器 - 首页</translation>
+  </message>
+  <message>
+    <source>config is incomplete</source>
+    <translation>
+    Mod制作器还未正确配置！
+请点击右上角配置好用户名和邮箱</translation>
+  </message>
+  <message>
+    <source>cannot use this mod name</source>
+    <translation>不能给mod取这个名字</translation>
+  </message>
+</context>
+
+<context>
+  <name>UserInfo</name>
+  <message>
+    <source>help_text</source>
+    <translation>用户名和邮箱需要填入和git服务器上相同的名字和邮箱。</translation>
+  </message>
+  <message>
+    <source>username</source>
+    <translation>用户名</translation>
+  </message>
+  <message>
+    <source>email</source>
+    <translation>邮箱</translation>
+  </message>
+  <message>
+    <source>key_help_text</source>
+    <translation>公钥是你向git服务器证明身份的手段。请点击按钮复制公钥，然后在网页中添加SSH密钥。详见新月杀Mod制作器教程。</translation>
+  </message>
+  <message>
+    <source>copy pubkey</source>
+    <translation>复制公钥</translation>
+  </message>
+  <message>
+    <source>pubkey copied</source>
+    <translation>公钥已经复制到剪贴板。</translation>
+  </message>
+</context>
+
+<context>
+  <name>CreateSomething</name>
+  <message>
+    <source>validator_hint</source>
+    <translation>注意：你仅可以输入大小写字母、数字和下划线，且长度至少为4。这里输入的只是内部名称，它的中文名你可以稍后指定。</translation>
+  </message>
+  <message>
+    <source>create_mod</source>
+    <translation>新建Mod</translation>
+  </message>
+  <message>
+    <source>create_mod_hint</source>
+    <translation>请输入mod的名称。</translation>
+  </message>
+</context>
+
 </TS>

lua/core/card.lua

@@ -86,13 +86,13 @@ function Card:initialize(name, suit, number, color)
     self.color = Card.NoColor
   end
 
-  self.package = nil
+  -- self.package = nil
   self.id = 0
   self.type = 0
   self.sub_type = Card.SubTypeNone
-  self.skill = nil
+  -- self.skill = nil
   self.subcards = {}
-  self.skillName = nil -- ""
+  -- self.skillName = nil
   self._skillName = ""
   self.skillNames = {}
   self.mark = {}
@@ -101,33 +101,23 @@ function Card:initialize(name, suit, number, color)
     self.name = string.sub(name, 2, #name)
     self.is_derived = true
   end
+end
 
-  local mt = table.simpleClone(getmetatable(self))
-  local newidx = mt.__newindex or rawset
-  mt.__newindex = function(t, k, v)
+function Card:__index(k)
+  if k == "skillName" then
+    return self._skillName
+  end
+end
+
+function Card:__newindex(k, v)
   if k == "skillName" then
     table.insertIfNeed(self.skillNames, v)
-      t._skillName = v
+    self._skillName = v
   else
-      return newidx(t, k, v)
+    rawset(self, k, v)
   end
 end
 
-  local idx = mt.__index or rawget
-  mt.__index = function(t, k)
-    if k == "skillName" then
-      return t._skillName
-    end
-    if type(idx) == "table" then
-      return idx[k]
-    end
-    if type(idx) == "function" then
-      return idx(t, k)
-    end
-  end
-  setmetatable(self, mt)
-end
-
 function Card:__tostring()
   return string.format("<Card %s[%s %d]>", self.name, self:getSuitString(), self.number)
 end

lua/server/request.lua

@@ -90,6 +90,7 @@ request_handlers["luckcard"] = function(room, id, reqlist)
   local p = room:getPlayerById(id)
   local cancel = reqlist[3] == "false"
   local luck_data = room:getTag("LuckCardData")
+  if not (p and luck_data) then return end
   local pdata = luck_data[id]
 
   if not cancel then

lua/server/serverplayer.lua

@@ -243,7 +243,11 @@ function ServerPlayer:marshal(player)
     room:notifyMoveCards({ player }, card_moves)
   end
 
-  -- TODO: pile, mark
+  -- TODO: pile
+
+  for k, v in pairs(self.mark) do
+    player:doNotify("SetPlayerMark", json.encode{self.id, k, v})
+  end
 
   for _, s in ipairs(self.player_skills) do
     player:doNotify("AddSkill", json.encode{self.id, s.name})

packages/standard/init.lua

@@ -1043,7 +1043,7 @@ local wushuang = fk.CreateTriggerSkill{
     end
 
     if event == fk.TargetSpecified then
-      return target == player and table.contains({ "slash", "duel" }, data.card.name)
+      return target == player and table.contains({ "slash", "duel" }, data.card.trueName)
     else
       return data.to == player.id and data.card.name == "duel"
     end

src/CMakeLists.txt

@@ -19,6 +19,7 @@ if (NOT DEFINED FK_SERVER_ONLY)
   list(APPEND freekill_SRCS
     "client/client.cpp"
     "client/clientplayer.cpp"
+    "ui/mod.cpp"
   )
 endif ()
 

src/core/util.cpp

@@ -139,33 +139,6 @@ void ExecSQL(sqlite3 *db, const QString &sql) {
 
 void CloseDatabase(sqlite3 *db) { sqlite3_close(db); }
 
-#ifndef Q_OS_WASM
-RSA *InitServerRSA() {
-  RSA *rsa = RSA_new();
-  if (!QFile::exists("server/rsa_pub")) {
-    BIGNUM *bne = BN_new();
-    BN_set_word(bne, RSA_F4);
-    RSA_generate_key_ex(rsa, 2048, bne, NULL);
-
-    BIO *bp_pub = BIO_new_file("server/rsa_pub", "w+");
-    PEM_write_bio_RSAPublicKey(bp_pub, rsa);
-    BIO *bp_pri = BIO_new_file("server/rsa", "w+");
-    PEM_write_bio_RSAPrivateKey(bp_pri, rsa, NULL, NULL, 0, NULL, NULL);
-
-    BIO_free_all(bp_pub);
-    BIO_free_all(bp_pri);
-    BN_free(bne);
-  }
-  FILE *keyFile = fopen("server/rsa_pub", "r");
-  PEM_read_RSAPublicKey(keyFile, &rsa, NULL, NULL);
-  fclose(keyFile);
-  keyFile = fopen("server/rsa", "r");
-  PEM_read_RSAPrivateKey(keyFile, &rsa, NULL, NULL);
-  fclose(keyFile);
-  return rsa;
-}
-#endif
-
 static void writeFileMD5(QFile &dest, const QString &fname) {
   QFile f(fname);
   if (!f.open(QIODevice::ReadOnly)) {
@@ -173,6 +146,7 @@ static void writeFileMD5(QFile &dest, const QString &fname) {
   }
 
   auto data = f.readAll();
+  f.close();
   data.replace(QByteArray("\r\n"), QByteArray("\n"));
   auto hash = QCryptographicHash::hash(data, QCryptographicHash::Md5).toHex();
   dest.write(fname.toUtf8() + '=' + hash + ';');

src/core/util.h

@@ -16,10 +16,6 @@ QString SelectFromDb(sqlite3 *db, const QString &sql);
 void ExecSQL(sqlite3 *db, const QString &sql);
 void CloseDatabase(sqlite3 *db);
 
-#ifndef Q_OS_WASM
-RSA *InitServerRSA();
-#endif
-
 QString calcFileMD5();
 QByteArray JsonArray2Bytes(const QJsonArray &arr);
 QJsonDocument String2Json(const QString &str);

src/main.cpp

@@ -260,6 +260,7 @@ int main(int argc, char *argv[]) {
   // 向 Qml 中先定义几个全局变量
   engine->rootContext()->setContextProperty("FkVersion", FK_VERSION);
   engine->rootContext()->setContextProperty("Backend", &backend);
+  engine->rootContext()->setContextProperty("ModBackend", nullptr);
   engine->rootContext()->setContextProperty("Pacman", Pacman);
 
 #ifdef QT_DEBUG

src/pch.h

@@ -14,9 +14,7 @@
 typedef int LuaFunction;
 #include "lua.hpp"
 #include "sqlite3.h"
-
-#include <openssl/rsa.h>
-#include <openssl/pem.h>
+#define OPENSSL_API_COMPAT 0x10101000L
 
 #if !defined (Q_OS_ANDROID) && !defined (Q_OS_WASM)
 #define DESKTOP_BUILD

src/server/server.cpp

@@ -22,7 +22,7 @@ Server *ServerInstance;
 Server::Server(QObject *parent) : QObject(parent) {
   ServerInstance = this;
   db = OpenDatabase();
-  rsa = InitServerRSA();
+  rsa = initServerRSA();
   QFile file("server/rsa_pub");
   file.open(QIODevice::ReadOnly);
   QTextStream in(&file);
@@ -431,6 +431,32 @@ void Server::onUserDisconnected() {
 
 void Server::onUserStateChanged() {}
 
+RSA *Server::initServerRSA() {
+  RSA *rsa = RSA_new();
+  if (!QFile::exists("server/rsa_pub")) {
+    BIGNUM *bne = BN_new();
+    BN_set_word(bne, RSA_F4);
+    RSA_generate_key_ex(rsa, 2048, bne, NULL);
+
+    BIO *bp_pub = BIO_new_file("server/rsa_pub", "w+");
+    PEM_write_bio_RSAPublicKey(bp_pub, rsa);
+    BIO *bp_pri = BIO_new_file("server/rsa", "w+");
+    PEM_write_bio_RSAPrivateKey(bp_pri, rsa, NULL, NULL, 0, NULL, NULL);
+
+    BIO_free_all(bp_pub);
+    BIO_free_all(bp_pri);
+    QFile("server/rsa").setPermissions(QFileDevice::ReadOwner | QFileDevice::WriteOwner);
+    BN_free(bne);
+  }
+  FILE *keyFile = fopen("server/rsa_pub", "r");
+  PEM_read_RSAPublicKey(keyFile, &rsa, NULL, NULL);
+  fclose(keyFile);
+  keyFile = fopen("server/rsa", "r");
+  PEM_read_RSAPrivateKey(keyFile, &rsa, NULL, NULL);
+  fclose(keyFile);
+  return rsa;
+}
+
 void Server::readConfig() {
   QFile file("freekill.server.config.json");
   if (!file.open(QIODevice::ReadOnly)) {

src/server/server.h

@@ -3,6 +3,9 @@
 #ifndef _SERVER_H
 #define _SERVER_H
 
+#include <openssl/rsa.h>
+#include <openssl/pem.h>
+
 #include <qjsonobject.h>
 #include <qjsonvalue.h>
 class ServerSocket;
@@ -67,6 +70,8 @@ private:
   sqlite3 *db;
   QString md5;
 
+  static RSA *initServerRSA();
+
   QJsonObject config;
   void readConfig();
 

src/ui/mod.cpp

@@ -0,0 +1,230 @@
+#include "mod.h"
+#include "git2.h"
+#include "util.h"
+#include <openssl/rsa.h>
+#include <openssl/bn.h>
+#include <openssl/pem.h>
+#include <qfiledevice.h>
+
+ModMaker::ModMaker(QObject *parent) : QObject(parent) {
+  git_libgit2_init();
+#ifdef Q_OS_ANDROID
+  git_libgit2_opts(GIT_OPT_SET_SSL_CERT_LOCATIONS, NULL, "./certs");
+#endif
+
+  if (!QDir("mymod").exists()) {
+    QDir(".").mkdir("mymod");
+  }
+
+  db = OpenDatabase("mymod/packages.db", "packages/mymod.sql");
+}
+
+ModMaker::~ModMaker() {
+  // git_libgit2_shutdown();
+  sqlite3_close(db);
+}
+
+// copied from https://stackoverflow.com/questions/1011572/convert-pem-key-to-ssh-rsa-format
+static unsigned char pSshHeader[11] = { 0x00, 0x00, 0x00, 0x07, 0x73, 0x73, 0x68, 0x2D, 0x72, 0x73, 0x61};
+
+static int SshEncodeBuffer(unsigned char *pEncoding, int bufferLen, unsigned char* pBuffer) {
+  int adjustedLen = bufferLen, index;
+  if (*pBuffer & 0x80) {
+    adjustedLen++;
+    pEncoding[4] = 0;
+    index = 5;
+  } else {
+    index = 4;
+  }
+
+  pEncoding[0] = (unsigned char) (adjustedLen >> 24);
+  pEncoding[1] = (unsigned char) (adjustedLen >> 16);
+  pEncoding[2] = (unsigned char) (adjustedLen >>  8);
+  pEncoding[3] = (unsigned char) (adjustedLen      );
+  memcpy(&pEncoding[index], pBuffer, bufferLen);
+  return index + bufferLen;
+}
+
+static void initSSHKeyPair() {
+  if (!QFile::exists("mymod/id_rsa.pub")) {
+    RSA *rsa = RSA_new();
+    BIGNUM *bne = BN_new();
+    BN_set_word(bne, RSA_F4);
+    RSA_generate_key_ex(rsa, 3072, bne, NULL);
+
+    BIO *bp_pri = BIO_new_file("mymod/id_rsa", "w");
+    PEM_write_bio_RSAPrivateKey(bp_pri, rsa, NULL, NULL, 0, NULL, NULL);
+    BIO_free_all(bp_pri);
+    QFile("mymod/id_rsa").setPermissions(QFileDevice::ReadOwner | QFileDevice::WriteOwner);
+
+    auto n = RSA_get0_n(rsa);
+    auto e = RSA_get0_e(rsa);
+    auto nLen = BN_num_bytes(n);
+    auto eLen = BN_num_bytes(e);
+    auto nBytes = (unsigned char *)malloc(nLen);
+    auto eBytes = (unsigned char *)malloc(eLen);
+    BN_bn2bin(n, nBytes);
+    BN_bn2bin(e, eBytes);
+
+    auto encodingLength = 11 + 4 + eLen + 4 + nLen;
+    // correct depending on the MSB of e and N
+    if (eBytes[0] & 0x80)
+      encodingLength++;
+    if (nBytes[0] & 0x80)
+      encodingLength++;
+
+    auto pEncoding = (unsigned char *)malloc(encodingLength);
+    memcpy(pEncoding, pSshHeader, 11);
+    int index = 0;
+    index = SshEncodeBuffer(&pEncoding[11], eLen, eBytes);
+    index = SshEncodeBuffer(&pEncoding[11 + index], nLen, nBytes);
+
+    auto b64 = BIO_new(BIO_f_base64());
+    BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
+    auto bio = BIO_new_file("mymod/id_rsa.pub", "w");
+    BIO_printf(bio, "ssh-rsa ");
+    bio = BIO_push(b64, bio);
+    BIO_write(bio, pEncoding, encodingLength);
+    BIO_flush(bio);
+    bio = BIO_pop(b64);
+    BIO_printf(bio, " FreeKill\n");
+    BIO_flush(bio);
+
+    BIO_free_all(bio);
+    BIO_free_all(b64);
+    BN_free(bne);
+    RSA_free(rsa);
+  }
+}
+
+void ModMaker::initKey() { initSSHKeyPair(); }
+
+QString ModMaker::readFile(const QString &fileName) {
+  QFile conf(fileName);
+  if (!conf.exists()) {
+    conf.open(QIODevice::WriteOnly);
+    static const char *init_conf = "{}";
+    conf.write(init_conf);
+    conf.close();
+    return init_conf;
+  }
+  conf.open(QIODevice::ReadOnly);
+  QString ret = conf.readAll();
+  conf.close();
+  return ret;
+}
+
+void ModMaker::saveToFile(const QString &fName, const QString &content) {
+  QFile c(fName);
+  c.open(QIODevice::WriteOnly);
+  c.write(content.toUtf8());
+  c.close();
+}
+
+void ModMaker::createMod(const QString &name) {
+  init(name);
+}
+
+void ModMaker::commitChanges(const QString &name, const QString &msg,
+    const QString &user, const QString &email)
+{
+  auto userBytes = user.toUtf8();
+  auto emailBytes = email.toUtf8();
+  commit(name, msg, userBytes, emailBytes);
+}
+
+#define GIT_FAIL                                                               \
+  const git_error *e = git_error_last();                                       \
+  qCritical("Error %d/%d: %s\n", error, e->klass, e->message)
+
+#define GIT_CHK(s) do { \
+  error = (s); \
+  if (error < 0) { \
+    GIT_FAIL; \
+    goto clean; \
+  }} while (0)
+
+static int fk_cred_cb(git_cred **out, const char *url, const char *name,
+    unsigned int allowed_types, void *payload)
+{
+  initSSHKeyPair();
+  return git_cred_ssh_key_new(out, "git", "mymod/id_rsa.pub", "mymod/id_rsa", "");
+}
+
+int ModMaker::init(const QString &pkg) {
+  QString path = "mymod/" + pkg;
+  int error;
+  git_repository *repo = NULL;
+  git_repository_init_options opts = GIT_REPOSITORY_INIT_OPTIONS_INIT;
+  opts.flags |= GIT_REPOSITORY_INIT_MKPATH; /* mkdir as needed to create repo */
+  error = git_repository_init_ext(&repo, path.toLatin1().constData(), &opts);
+  if (error < 0) {
+    GIT_FAIL;
+  }
+  git_repository_free(repo);
+  return error;
+}
+
+int ModMaker::add(const QString &pkg) {
+  QString path = "mymod/" + pkg;
+  int error;
+  git_repository *repo = NULL;
+  git_index *index = NULL;
+
+  GIT_CHK(git_repository_open(&repo, path.toLatin1()));
+  GIT_CHK(git_repository_index(&index, repo));
+  GIT_CHK(git_index_add_all(index, NULL, GIT_INDEX_ADD_DEFAULT, NULL, NULL));
+  GIT_CHK(git_index_write(index));
+
+clean:
+  git_repository_free(repo);
+  git_index_free(index);
+  return error;
+}
+
+int ModMaker::commit(const QString &pkg, const QString &msg, const char *user, const char *email) {
+  QString path = "mymod/" + pkg;
+  int error;
+  git_repository *repo = NULL;
+  git_oid commit_oid,tree_oid;
+  git_tree *tree;
+  git_index *index;
+  git_object *parent = NULL;
+  git_reference *ref = NULL;
+  git_signature *signature;
+
+  GIT_CHK(git_repository_open(&repo, path.toLatin1()));
+  error = git_revparse_ext(&parent, &ref, repo, "HEAD");
+  if (error == GIT_ENOTFOUND) {
+    // printf("HEAD not found. Creating first commit\n");
+    error = 0;
+  } else if (error != 0) {
+    GIT_FAIL;
+    goto clean;
+  }
+
+  GIT_CHK(git_repository_index(&index, repo));
+  GIT_CHK(git_index_write_tree(&tree_oid, index));
+  GIT_CHK(git_index_write(index));
+  GIT_CHK(git_tree_lookup(&tree, repo, &tree_oid));
+  GIT_CHK(git_signature_now(&signature, user, email));
+  GIT_CHK(git_commit_create_v(
+        &commit_oid,
+        repo,
+        "HEAD",
+        signature,
+        signature,
+        NULL,
+        msg.toUtf8(),
+        tree,
+        parent ? 1 : 0, parent));
+
+clean:
+  git_repository_free(repo);
+  git_index_free(index);
+  git_signature_free(signature);
+  git_tree_free(tree);
+  git_object_free(parent);
+  git_reference_free(ref);
+  return error;
+}

src/ui/mod.h

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef _DIY_H
+#define _DIY_H
+
+#include <qtmetamacros.h>
+class ModMaker : public QObject {
+  Q_OBJECT
+public:
+  ModMaker(QObject *parent = nullptr);
+  ~ModMaker();
+
+  Q_INVOKABLE void initKey();
+
+  Q_INVOKABLE QString readFile(const QString &fileName);
+  Q_INVOKABLE void saveToFile(const QString &fileName, const QString &content);
+
+  Q_INVOKABLE void createMod(const QString &name);
+  Q_INVOKABLE void stageFiles(const QString &name) { add(name); }
+  Q_INVOKABLE void commitChanges(const QString &name, const QString &msg,
+      const QString &user, const QString &email);
+
+private:
+  sqlite3 *db;
+
+  // git functions
+  int init(const QString &pkg);
+  int add(const QString &pkg);
+  int commit(const QString &pkg, const QString &msg, const char *user, const char *email);
+};
+
+#endif

src/ui/qmlbackend.cpp

@@ -9,6 +9,7 @@
 
 #include <QClipboard>
 #include <QMediaPlayer>
+#include "mod.h"
 #endif
 
 #include <cstdlib>
@@ -227,10 +228,13 @@ QString QmlBackend::loadConf() {
     conf.open(QIODevice::WriteOnly);
     static const char *init_conf = "{}";
     conf.write(init_conf);
+    conf.close();
     return init_conf;
   }
   conf.open(QIODevice::ReadOnly);
-  return conf.readAll();
+  auto ret = conf.readAll();
+  conf.close();
+  return ret;
 }
 
 QString QmlBackend::loadTips() {
@@ -239,16 +243,20 @@ QString QmlBackend::loadTips() {
     conf.open(QIODevice::WriteOnly);
     static const char *init_conf = "转啊~ 转啊~";
     conf.write(init_conf);
+    conf.close();
     return init_conf;
   }
   conf.open(QIODevice::ReadOnly);
-  return conf.readAll();
+  auto ret = conf.readAll();
+  conf.close();
+  return ret;
 }
 
 void QmlBackend::saveConf(const QString &conf) {
   QFile c("freekill.client.config.json");
   c.open(QIODevice::WriteOnly);
   c.write(conf.toUtf8());
+  c.close();
 }
 
 void QmlBackend::replyDelayTest(const QString &screenName,
@@ -308,4 +316,8 @@ void QmlBackend::installAESKey() {
   ClientInstance->installAESKey(aes_key.toLatin1());
 }
 
+void QmlBackend::createModBackend() {
+  engine->rootContext()->setContextProperty("ModBackend", new ModMaker);
+}
+
 #endif

src/ui/qmlbackend.h

@@ -3,6 +3,9 @@
 #ifndef _QMLBACKEND_H
 #define _QMLBACKEND_H
 
+#include <openssl/rsa.h>
+#include <openssl/pem.h>
+
 #include <qtmetamacros.h>
 class QmlBackend : public QObject {
   Q_OBJECT
@@ -50,6 +53,8 @@ public:
   Q_INVOKABLE QString getAESKey() const;
   Q_INVOKABLE void installAESKey();
 
+  Q_INVOKABLE void createModBackend();
+
   qreal volume() const { return m_volume; }
   void setVolume(qreal v) { m_volume = v; }