374 lines
18 KiB
PHP
374 lines
18 KiB
PHP
<?php
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namespace ba;
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use Throwable;
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use support\think\Db;
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/**
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* 点选文字验证码类
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*/
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class ClickCaptcha
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{
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private int $expire = 600;
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private array $bgPaths = [
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'static/images/captcha/click/bgs/1.png',
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'static/images/captcha/click/bgs/2.png',
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'static/images/captcha/click/bgs/3.png',
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];
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private array $fontPaths = [
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'static/fonts/zhttfs/SourceHanSansCN-Normal.ttf',
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];
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/** 当项目字体不存在时的系统字体回退路径（支持中文，需 .ttf 格式） */
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private function getFontFallbacks(): array
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{
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$fallbacks = [];
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if (str_starts_with(strtoupper(PHP_OS_FAMILY), 'WIN')) {
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$winFonts = (getenv('SystemRoot') ?: getenv('WINDIR') ?: 'C:\\Windows') . '\\Fonts\\';
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$fallbacks = [
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$winFonts . 'simhei.ttf', // 黑体
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$winFonts . 'msyh.ttc', // 微软雅黑
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$winFonts . 'simsun.ttc', // 宋体
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];
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} else {
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$fallbacks = [
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'/usr/share/fonts/truetype/wqy/wqy-microhei.ttf',
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'/usr/share/fonts/truetype/wqy/wqy-microhei.ttc',
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];
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}
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return $fallbacks;
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}
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private array $iconDict = [
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'aeroplane' => '飞机',
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'apple' => '苹果',
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'banana' => '香蕉',
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'bell' => '铃铛',
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'bicycle' => '自行车',
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'bird' => '小鸟',
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'bomb' => '炸弹',
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'butterfly' => '蝴蝶',
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'candy' => '糖果',
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'crab' => '螃蟹',
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'cup' => '杯子',
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'dolphin' => '海豚',
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'fire' => '火',
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'guitar' => '吉他',
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'hexagon' => '六角形',
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'pear' => '梨',
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'rocket' => '火箭',
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'sailboat' => '帆船',
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'snowflake' => '雪花',
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'wolf head' => '狼头',
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];
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private array $config = [
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'alpha' => 36,
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'zhSet' => '们以我到他会作时要动国产的是工就年阶义发成部民可出能方进在和有大这主中为来分生对于学级地用同行面说种过命度革而多子后自社加小机也经力线本电高量长党得实家定深法表着水理化争现所起政好十战无农使前等反体合斗路图把结第里正新开论之物从当两些还天资事队点育重其思与间内去因件利相由压员气业代全组数果期导平各基或月然如应形想制心样都向变关问比展那它最及外没看治提五解系林者米群头意只明四道马认次文通但条较克又公孔领军流接席位情运器并飞原油放立题质指建区验活众很教决特此常石强极已根共直团统式转别造切九你取西持总料连任志观调么山程百报更见必真保热委手改管处己将修支识象先老光专什六型具示复安带每东增则完风回南劳轮科北打积车计给节做务被整联步类集号列温装即毫知轴研单坚据速防史拉世设达尔场织历花求传断况采精金界品判参层止边清至万确究书术状须离再目海权且青才证低越际八试规斯近注办布门铁需走议县兵固除般引齿胜细影济白格效置推空配叶率述今选养德话查差半敌始片施响收华觉备名红续均药标记难存测身紧液派准斤角降维板许破述技消底床田势端感往神便贺村构照容非亚磨族段算适讲按值美态易彪服早班麦削信排台声该击素张密害侯何树肥继右属市严径螺检左页抗苏显苦英快称坏移巴材省黑武培著河帝仅针怎植京助升王眼她抓苗副杂普谈围食源例致酸旧却充足短划剂宣环落首尺波承粉践府鱼随考刻靠够满夫失包住促枝局菌杆周护岩师举曲春元超负砂封换太模贫减阳扬江析亩木言球朝医校古呢稻宋听唯输滑站另卫字鼓刚写刘微略范供阿块某功友限项余倒卷创律雨让骨远帮初皮播优占圈伟季训控激找叫云互跟粮粒母练塞钢顶策双留误础阻故寸盾晚丝女散焊功株亲院冷彻弹错散商视艺版烈零室轻倍缺厘泵察绝富城冲喷壤简否柱李望盘磁雄似困巩益洲脱投送侧润盖挥距触星松送获兴独官混纪依未突架宽冬章偏纹吃执阀矿寨责熟稳夺硬价努翻奇甲预职评读背协损棉侵灰虽矛厚罗泥辟告箱掌氧恩爱停曾溶营终纲孟钱待尽俄缩沙退陈讨奋械载胞哪旋征槽倒握担仍呀鲜吧卡粗介钻逐弱脚怕盐末丰雾冠丙街莱贝辐肠付吉渗瑞惊顿挤秒悬姆森糖圣凹陶词迟蚕亿矩康遵牧遭幅园腔订香肉弟屋敏恢忘编印蜂急拿扩飞露核缘游振操央伍域甚迅辉异序免纸夜乡久隶念兰映沟乙吗儒汽磷艰晶埃燃欢铁补咱芽永瓦倾阵碳演威附牙芽永瓦斜灌欧献顺猪洋腐请透司括脉宜笑若尾束壮暴企菜穗楚汉愈绿拖牛份染既秋遍锻玉夏疗尖井费州访吹荣铜沿替滚客召旱悟刺脑措贯藏敢令隙炉壳硫煤迎铸粘探临薄旬善福纵择礼愿伏残雷延烟句纯渐耕跑泽慢栽鲁赤繁境潮横掉锥希池败船假亮谓托伙哲怀摆贡呈劲财仪沉炼麻祖息车穿货销齐鼠抽画饲龙库守筑房歌寒喜哥洗蚀废纳腹乎录镜脂庄擦险赞钟摇典柄辩竹谷乱虚桥奥伯赶垂途额壁网截野遗静谋弄挂课镇妄盛耐扎虑键归符庆聚绕摩忙舞遇索顾胶羊湖钉仁音迹碎伸灯避泛答勇频皇柳哈揭甘诺概宪浓岛袭谁洪谢炮浇斑讯懂灵蛋闭孩释巨徒私银伊景坦累匀霉杜乐勒隔弯绩招绍胡呼峰零柴簧午跳居尚秦稍追梁折耗碱殊岗挖氏刃剧堆赫荷胸衡勤膜篇登驻案刊秧缓凸役剪川雪链渔啦脸户洛孢勃盟买杨宗焦赛旗滤硅炭股坐蒸凝竟枪黎救冒暗洞犯筒您宋弧爆谬涂味津臂障褐陆啊健尊豆拔莫抵桑坡缝警挑冰柬嘴啥饭塑寄赵喊垫丹渡耳虎笔稀昆浪萨茶滴浅拥覆伦娘吨浸袖珠雌妈紫戏塔锤震岁貌洁剖牢锋疑霸闪埔猛诉刷忽闹乔唐漏闻沈熔氯荒茎男凡抢像浆旁玻亦忠唱蒙予纷捕锁尤乘乌智淡允叛畜俘摸锈扫毕璃宝芯爷鉴秘净蒋钙肩腾枯抛轨堂拌爸循诱祝励肯酒绳塘燥泡袋朗喂铝软渠颗惯贸综墙趋彼届墨碍启逆卸航衣孙龄岭休借',
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];
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public function __construct(array $config = [])
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{
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$clickConfig = config('buildadmin.click_captcha', []);
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$this->config = array_merge($clickConfig, $this->config, $config);
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Db::name('captcha')->where('expire_time', '<', time())->delete();
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}
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/** 将 public 下的相对路径转为绝对路径（public_path 无尾部分隔符时也能正确拼接） */
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private function path(string $relativePath): string
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{
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return Filesystem::fsFit(rtrim(public_path(), '/\\') . DIRECTORY_SEPARATOR . ltrim($relativePath, '/\\'));
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}
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/**
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* 获取可用的字体路径，优先使用项目字体，不存在时回退到系统字体或配置中的 font_path
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*/
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protected function getFontPath(): string
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{
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$customFont = $this->config['font_path'] ?? config('buildadmin.click_captcha.font_path', '');
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if (!empty($customFont)) {
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$fullPath = Filesystem::fsFit($customFont);
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if (is_file($fullPath)) {
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return $fullPath;
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}
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}
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foreach ($this->fontPaths as $path) {
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$fullPath = $this->path($path);
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if (is_file($fullPath)) {
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return $fullPath;
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}
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}
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foreach ($this->getFontFallbacks() as $path) {
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$fullPath = Filesystem::fsFit($path);
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if (is_file($fullPath)) {
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return $fullPath;
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}
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}
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throw new \RuntimeException(
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'点选验证码需要中文字体文件。请将 SourceHanSansCN-Normal.ttf 放入 public/static/fonts/zhttfs/ 目录，' .
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'或在 config/buildadmin.php 的 click_captcha.font_path 中指定系统字体路径（如 Windows: C:\\Windows\\Fonts\\simhei.ttf）'
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);
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}
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/** 当无背景图时创建简易纯色背景（300x150） */
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private function createFallbackBg(): string
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{
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$w = 300;
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$h = 150;
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$img = imagecreatetruecolor($w, $h);
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imagefill($img, 0, 0, imagecolorallocate($img, 245, 245, 245));
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$dir = runtime_path('captcha');
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if (!is_dir($dir)) {
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mkdir($dir, 0755, true);
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}
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$path = $dir . DIRECTORY_SEPARATOR . 'fallback_bg_' . uniqid() . '.png';
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imagepng($img, $path);
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imagedestroy($img);
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return $path;
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}
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/** 获取存在的背景图路径列表 */
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private function getAvailableBgPaths(): array
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{
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$available = [];
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foreach ($this->bgPaths as $p) {
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if (is_file($this->path($p))) {
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$available[] = $p;
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}
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}
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return $available;
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}
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/** 获取存在的图标名列表（文件存在的才加入） */
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private function getAvailableIcons(): array
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{
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$available = [];
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foreach (array_keys($this->iconDict) as $name) {
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$iconPath = $this->path('static/images/captcha/click/icons/' . $name . '.png');
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if (is_file($iconPath)) {
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$available[] = $name;
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}
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}
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return $available;
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}
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public function creat(string $id): array
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{
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$availableBgs = $this->getAvailableBgPaths();
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$imagePath = !empty($availableBgs)
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? $this->path($availableBgs[mt_rand(0, count($availableBgs) - 1)])
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: $this->createFallbackBg();
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$fontPath = $this->getFontPath();
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$randPoints = $this->randPoints($this->config['length'] + $this->config['confuse_length']);
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$lang = config('translation.locale', config('lang.default_lang', 'zh-cn'));
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$isZhCn = str_starts_with(strtolower(str_replace('_', '-', (string)$lang)), 'zh-cn');
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foreach ($randPoints as $v) {
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$tmp['size'] = rand(15, 30);
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if (isset($this->iconDict[$v])) {
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$iconPath = $this->path('static/images/captcha/click/icons/' . $v . '.png');
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if (!is_file($iconPath)) {
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$fontArea = imagettfbbox($tmp['size'], 0, $fontPath, $this->iconDict[$v]);
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$textWidth = $fontArea[2] - $fontArea[0];
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$textHeight = $fontArea[1] - $fontArea[7];
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$tmp['icon'] = false;
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$tmp['text'] = $isZhCn ? $this->iconDict[$v] : $v;
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$tmp['width'] = $textWidth;
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$tmp['height'] = $textHeight;
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} else {
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$tmp['icon'] = true;
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$tmp['name'] = $v;
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$tmp['text'] = $isZhCn ? "<{$this->iconDict[$v]}>" : "<$v>";
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$iconInfo = getimagesize($iconPath);
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$tmp['width'] = $iconInfo[0];
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$tmp['height'] = $iconInfo[1];
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}
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} else {
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$fontArea = imagettfbbox($tmp['size'], 0, $fontPath, $v);
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$textWidth = $fontArea[2] - $fontArea[0];
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$textHeight = $fontArea[1] - $fontArea[7];
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$tmp['icon'] = false;
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$tmp['text'] = $v;
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$tmp['width'] = $textWidth;
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$tmp['height'] = $textHeight;
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}
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$textArr['text'][] = $tmp;
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}
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$imageInfo = getimagesize($imagePath);
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$textArr['width'] = $imageInfo[0];
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$textArr['height'] = $imageInfo[1];
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foreach ($textArr['text'] as &$v) {
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list($x, $y) = $this->randPosition($textArr['text'], $textArr['width'], $textArr['height'], $v['width'], $v['height'], $v['icon']);
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$v['x'] = $x;
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$v['y'] = $y;
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$text[] = $v['text'];
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}
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unset($v);
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$image = imagecreatefromstring(file_get_contents($imagePath));
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foreach ($textArr['text'] as $v) {
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if ($v['icon']) {
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$this->iconCover($image, $v);
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} else {
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$color = imagecolorallocatealpha($image, 239, 239, 234, 127 - intval($this->config['alpha'] * (127 / 100)));
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imagettftext($image, $v['size'], 0, $v['x'], $v['y'], $color, $fontPath, $v['text']);
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}
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}
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$nowTime = time();
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$textArr['text'] = array_splice($textArr['text'], 0, $this->config['length']);
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$text = array_splice($text, 0, $this->config['length']);
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Db::name('captcha')
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->replace()
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->insert([
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'key' => md5($id),
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'code' => md5(implode(',', $text)),
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'captcha' => json_encode($textArr, JSON_UNESCAPED_UNICODE),
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'create_time' => $nowTime,
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'expire_time' => $nowTime + $this->expire
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]);
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while (ob_get_level()) {
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ob_end_clean();
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}
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if (!ob_get_level()) ob_start();
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switch ($imageInfo[2]) {
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case 1:
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imagegif($image);
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$content = ob_get_clean();
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break;
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case 2:
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imagejpeg($image);
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$content = ob_get_clean();
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break;
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case 3:
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imagepng($image);
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$content = ob_get_clean();
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break;
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default:
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$content = '';
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break;
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}
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return [
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'id' => $id,
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'text' => $text,
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'base64' => 'data:' . $imageInfo['mime'] . ';base64,' . base64_encode($content),
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'width' => $textArr['width'],
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'height' => $textArr['height'],
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];
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}
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public function check(string $id, string $info, bool $unset = true): bool
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{
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$key = md5($id);
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$captcha = Db::name('captcha')->where('key', $key)->find();
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if ($captcha) {
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if (time() > $captcha['expire_time']) {
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Db::name('captcha')->where('key', $key)->delete();
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return false;
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}
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$textArr = json_decode($captcha['captcha'], true);
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list($xy, $w, $h) = explode(';', $info);
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$xyArr = explode('-', $xy);
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$xPro = $w / $textArr['width'];
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$yPro = $h / $textArr['height'];
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foreach ($xyArr as $k => $v) {
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$xy = explode(',', $v);
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$x = $xy[0];
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$y = $xy[1];
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if ($x / $xPro < $textArr['text'][$k]['x'] || $x / $xPro > $textArr['text'][$k]['x'] + $textArr['text'][$k]['width']) {
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return false;
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}
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$phStart = $textArr['text'][$k]['icon'] ? $textArr['text'][$k]['y'] : $textArr['text'][$k]['y'] - $textArr['text'][$k]['height'];
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$phEnd = $textArr['text'][$k]['icon'] ? $textArr['text'][$k]['y'] + $textArr['text'][$k]['height'] : $textArr['text'][$k]['y'];
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if ($y / $yPro < $phStart || $y / $yPro > $phEnd) {
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return false;
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}
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}
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if ($unset) Db::name('captcha')->where('key', $key)->delete();
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return true;
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} else {
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return false;
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}
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}
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protected function iconCover($bgImg, $iconImgData): void
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{
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$iconImage = imagecreatefrompng($this->path('static/images/captcha/click/icons/' . $iconImgData['name'] . '.png'));
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$trueColorImage = imagecreatetruecolor($iconImgData['width'], $iconImgData['height']);
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imagecopy($trueColorImage, $bgImg, 0, 0, $iconImgData['x'], $iconImgData['y'], $iconImgData['width'], $iconImgData['height']);
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imagecopy($trueColorImage, $iconImage, 0, 0, 0, 0, $iconImgData['width'], $iconImgData['height']);
|
||
imagecopymerge($bgImg, $trueColorImage, $iconImgData['x'], $iconImgData['y'], 0, 0, $iconImgData['width'], $iconImgData['height'], $this->config['alpha']);
|
||
}
|
||
|
||
public function randPoints(int $length = 4): array
|
||
{
|
||
$arr = [];
|
||
if (in_array('text', $this->config['mode'])) {
|
||
for ($i = 0; $i < $length; $i++) {
|
||
$arr[] = mb_substr($this->config['zhSet'], mt_rand(0, mb_strlen($this->config['zhSet'], 'utf-8') - 1), 1, 'utf-8');
|
||
}
|
||
}
|
||
|
||
if (in_array('icon', $this->config['mode'])) {
|
||
$availableIcons = $this->getAvailableIcons();
|
||
if (!empty($availableIcons)) {
|
||
shuffle($availableIcons);
|
||
$icon = array_slice($availableIcons, 0, $length);
|
||
$arr = array_merge($arr, $icon);
|
||
}
|
||
}
|
||
|
||
shuffle($arr);
|
||
$result = array_slice($arr, 0, $length);
|
||
if (empty($result)) {
|
||
for ($i = 0; $i < $length; $i++) {
|
||
$result[] = mb_substr($this->config['zhSet'], mt_rand(0, mb_strlen($this->config['zhSet'], 'utf-8') - 1), 1, 'utf-8');
|
||
}
|
||
}
|
||
return $result;
|
||
}
|
||
|
||
private function randPosition(array $textArr, int $imgW, int $imgH, int $fontW, int $fontH, bool $isIcon): array
|
||
{
|
||
$x = rand(0, $imgW - $fontW);
|
||
$y = rand($fontH, $imgH - $fontH);
|
||
if (!$this->checkPosition($textArr, $x, $y, $fontW, $fontH, $isIcon)) {
|
||
$position = $this->randPosition($textArr, $imgW, $imgH, $fontW, $fontH, $isIcon);
|
||
} else {
|
||
$position = [$x, $y];
|
||
}
|
||
return $position;
|
||
}
|
||
|
||
public function checkPosition(array $textArr, int $x, int $y, int $w, int $h, bool $isIcon): bool
|
||
{
|
||
$flag = true;
|
||
foreach ($textArr as $v) {
|
||
if (isset($v['x']) && isset($v['y'])) {
|
||
$flagX = false;
|
||
$flagY = false;
|
||
$historyPw = $v['x'] + $v['width'];
|
||
if (($x + $w) < $v['x'] || $x > $historyPw) {
|
||
$flagX = true;
|
||
}
|
||
|
||
$currentPhStart = $isIcon ? $y : $y - $h;
|
||
$currentPhEnd = $isIcon ? $y + $v['height'] : $y;
|
||
$historyPhStart = $v['icon'] ? $v['y'] : ($v['y'] - $v['height']);
|
||
$historyPhEnd = $v['icon'] ? ($v['y'] + $v['height']) : $v['y'];
|
||
if ($currentPhEnd < $historyPhStart || $currentPhStart > $historyPhEnd) {
|
||
$flagY = true;
|
||
}
|
||
if (!$flagX && !$flagY) {
|
||
$flag = false;
|
||
}
|
||
}
|
||
}
|
||
return $flag;
|
||
}
|
||
}
|