如何创建网站老鱼网,网站建设框架搭建,wordpress中文字体,计算机网站开发实现总结目录
类功能
类定义
类实现
编译测试
Split分割字符串测试
ReadFile读取测试
WriteFile写入测试
UrlEncode编码测试
UrlDecode编码测试
StatuDesc状态码信息获取测试
ExtMime后缀名获取文件mime测试
IsDirectoryIsRegular测试
VaildPath请求路径有效性判断测…目录
类功能
类定义
类实现
编译测试
Split分割字符串测试
ReadFile读取测试
WriteFile写入测试
UrlEncode编码测试
UrlDecode编码测试
StatuDesc状态码信息获取测试
ExtMime后缀名获取文件mime测试
IsDirectoryIsRegular测试
VaildPath请求路径有效性判断测试
总编译
补充
trunc截断
编码格式的规定
md5sum校验和比较两个文件是否一致
新增gdb调试手法 类功能 类定义
#include ../server.hppclass Util{public :// 字符串分割函数size_t Split();// 读取文件内容static bool ReadFile();// 向文件写入数据static bool WriteFile();// URL编码static bool UrlEncode();// URL解码static bool UrlDecode();// 响应状态码的描述信息获取static std::string StatuDesc();// 根据文件后缀名获取文件mimestatic std::string ExtMime();// 判断一个文件是否是一个目录static bool IsDirectory();// 判断一个文件是否是一个普通文件static bool IsRegular();// http请求的资源路径有效性判断static bool VaildPath();
}; 类实现
#include ../server.hpp
#include sys/stat.h
#include fstreamclass Util
{
public:// 字符串分割函数static size_t Split(const std::string src, const std::string sep, std::vectorstd::string *arry){size_t offset 0;// 有10个字符,offset是查找的起始位置,范围应该是0~9,offset10就代表已经越界了,返回查找的位置while (offset src.size()){size_t pos src.find(sep, offset); // 在src字符串偏移量offset处,开始向后查找sep字符/子串,返回查找到的位置if (pos std::string::npos) // 没有找到特定的字符{// 将剩余的部分当做一个子串,放入arry中if (pos src.size())break;arry-push_back(src.substr(offset));return arry-size();}if (pos offset){offset pos sep.size();continue; // 当前字符串是一个空串,没有内容}arry-push_back(src.substr(offset, pos - offset));offset pos sep.size();}return arry-size();}// 读取文件的所有内容,将读取到的内容放到一个容器中static bool ReadFile(const std::string filename, std::string *buf){std::ifstream ifs(filename, std::ios::binary); // 以二进制的方式读取if (ifs.is_open() false){printf(OPEN %s FILE FAILED!!, filename.c_str());return false;}size_t fsize 0; // 偏移量ifs.seekg(0, ifs.end); // 跳转读写位置到末尾fsize ifs.tellg(); // 获取当前读写位置相对于起始位置的偏移量,从末尾偏移量刚好就是文件大小ifs.seekg(0, ifs.beg); // 跳转到起始位置buf-resize(fsize); // 开辟文件大小的空间ifs.read((*buf)[0], fsize); // c_str()返回的是一个const,所以不行if (ifs.good() false){printf(READ %s FILE FAILED!!, filename.c_str());ifs.close();return false;}ifs.close();return true;}// 向文件写入数据static bool WriteFile(const std::string filename, const std::string buf){std::ofstream ofs(filename, std::ios::binary | std::ios::trunc);if (ofs.is_open() false){printf(OPEN %s FILE FAILED!!, filename.c_str());return false;}ofs.write(buf.c_str(), buf.size());if (ofs.good() false){ERR_LOG(WRITE %s FILE FAILED!, filename.c_str());ofs.close();return false;}ofs.close();return true;}// URL编码避免URL中资源路径与查询字符串中的特殊字符与HTTP请求中特殊字符产生歧义// 编码格式将特殊字符的ascii值转换为两个16进制字符前缀% C - C%2B%2B// 不编码的特殊字符 RFC3986文档规定 . - _ ~ 字母数字属于绝对不编码字符// RFC3986文档规定编码格式 %HH// W3C标准中规定查询字符串中的空格需要编码为 解码则是转空格static std::string UrlEncode(const std::string url, bool convert_space_to_plus){std::string res;for (auto c : url){if (c . || c - || c _ || c ~ || isalnum(c)){res c;continue;}if (c convert_space_to_plus true){res ;continue;}// 剩下的字符都是需要编码成为 %HH 格式char tmp[4] {0};// snprintf 与 printf比较类似,都是格式化字符串,只不过一个是打印,一个是放到一块空间中snprintf(tmp, 4, %%%02X, c);res tmp;}return res;}static char HEXTOI(char c){if (c 0 c 9)return c - 0;else if (c a c z)return c - a 10; // 注意要加10,16进制中,字母a从11开始else if (c A c Z)return c - A 10;return -1;}// URL解码static std::string UrlDecode(const std::string url, bool convert_plus_to_space){// 遇到了%,则将紧随其后的2个字符,转换为数字,第一个数字左移4位,然后加上第二个数字// -2b %2b-2 4 11std::string res;for (int i 0; i url.size(); i){if (url[i] convert_plus_to_space true){res ;continue;}if (url[i] %){char v1 HEXTOI(url[i 1]);char v2 HEXTOI(url[i 2]);char v v1 * 16 v2;i 2;continue;}res url[i];}return res;}// 响应状态码的描述信息获取static std::string StatuDesc(int statu){std::unordered_mapint, std::string _statu_msg {{100, Continue},{101, Switching Protocol},{102, Processing},{103, Early Hints},{200, OK},{201, Created},{202, Accepted},{203, Non-Authoritative Information},{204, No Content},{205, Reset Content},{206, Partial Content},{207, Multi-Status},{208, Already Reported},{226, IM Used},{300, Multiple Choice},{301, Moved Permanently},{302, Found},{303, See Other},{304, Not Modified},{305, Use Proxy},{306, unused},{307, Temporary Redirect},{308, Permanent Redirect},{400, Bad Request},{401, Unauthorized},{402, Payment Required},{403, Forbidden},{404, Not Found},{405, Method Not Allowed},{406, Not Acceptable},{407, Proxy Authentication Required},{408, Request Timeout},{409, Conflict},{410, Gone},{411, Length Required},{412, Precondition Failed},{413, Payload Too Large},{414, URI Too Long},{415, Unsupported Media Type},{416, Range Not Satisfiable},{417, Expectation Failed},{418, Im a teapot},{421, Misdirected Request},{422, Unprocessable Entity},{423, Locked},{424, Failed Dependency},{425, Too Early},{426, Upgrade Required},{428, Precondition Required},{429, Too Many Requests},{431, Request Header Fields Too Large},{451, Unavailable For Legal Reasons},{501, Not Implemented},{502, Bad Gateway},{503, Service Unavailable},{504, Gateway Timeout},{505, HTTP Version Not Supported},{506, Variant Also Negotiates},{507, Insufficient Storage},{508, Loop Detected},{510, Not Extended},{511, Network Authentication Required}};auto it _statu_msg.find(statu);if (it ! _statu_msg.end()){return it-second;}return Unknow;}// 根据文件后缀名获取文件mimestatic std::string ExtMime(const std::string filename){std::unordered_mapstd::string, std::string _mime_msg {{.aac, audio/aac},{.abw, application/x-abiword},{.arc, application/x-freearc},{.avi, video/x-msvideo},{.azw, application/vnd.amazon.ebook},{.bin, application/octet-stream},{.bmp, image/bmp},{.bz, application/x-bzip},{.bz2, application/x-bzip2},{.csh, application/x-csh},{.css, text/css},{.csv, text/csv},{.doc, application/msword},{.docx, application/vnd.openxmlformats-officedocument.wordprocessingml.document},{.eot, application/vnd.ms-fontobject},{.epub, application/epubzip},{.gif, image/gif},{.htm, text/html},{.html, text/html},{.ico, image/vnd.microsoft.icon},{.ics, text/calendar},{.jar, application/java-archive},{.jpeg, image/jpeg},{.jpg, image/jpeg},{.js, text/javascript},{.json, application/json},{.jsonld, application/ldjson},{.mid, audio/midi},{.midi, audio/x-midi},{.mjs, text/javascript},{.mp3, audio/mpeg},{.mpeg, video/mpeg},{.mpkg, application/vnd.apple.installerxml},{.odp, application/vnd.oasis.opendocument.presentation},{.ods, application/vnd.oasis.opendocument.spreadsheet},{.odt, application/vnd.oasis.opendocument.text},{.oga, audio/ogg},{.ogv, video/ogg},{.ogx, application/ogg},{.otf, font/otf},{.png, image/png},{.pdf, application/pdf},{.ppt, application/vnd.ms-powerpoint},{.pptx, application/vnd.openxmlformats-officedocument.presentationml.presentation},{.rar, application/x-rar-compressed},{.rtf, application/rtf},{.sh, application/x-sh},{.svg, image/svgxml},{.swf, application/x-shockwave-flash},{.tar, application/x-tar},{.tif, image/tiff},{.tiff, image/tiff},{.ttf, font/ttf},{.txt, text/plain},{.vsd, application/vnd.visio},{.wav, audio/wav},{.weba, audio/webm},{.webm, video/webm},{.webp, image/webp},{.woff, font/woff},{.woff2, font/woff2},{.xhtml, application/xhtmlxml},{.xls, application/vnd.ms-excel},{.xlsx, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet},{.xml, application/xml},{.xul, application/vnd.mozilla.xulxml},{.zip, application/zip},{.3gp, video/3gpp},{.3g2, video/3gpp2},{.7z, application/x-7z-compressed},};// a.b.txt 获取文件名size_t pos filename.find_last_of(.);if (pos ! std::string::npos)return application/octet-stream; // 没找着表示文件是一个二进制文件// 根据扩展名,获取mimestd::string ext filename.substr(pos);auto it _mime_msg.find(ext);if (it _mime_msg.end())return application/octet-stream;return it-second;}// 判断一个文件是否是一个目录static bool IsDirectory(const std::string filename){struct stat st;int ret stat(filename.c_str(), st);if (ret 0)return false;return S_ISDIR(st.st_mode);}// 判断一个文件是否是一个普通文件static bool IsRegular(const std::string filename){struct stat st;int ret stat(filename.c_str(), st);if (ret 0)return false;return S_ISREG(st.st_mode);}// http请求的资源路径有效性判断// /index.html --- 前边的/叫做相对根目录 映射的是某个服务器上的子目录// 想表达的意思就是客户端只能请求相对根目录中的资源其他地方的资源都不予理会// /../login, 这个路径中的..会让路径的查找跑到相对根目录之外这是不合理的不安全的static bool VaildPath();
}; 编译测试
各个函数依次测试功能
Split分割字符串测试 ReadFile读取测试 WriteFile写入测试 UrlEncode编码测试 UrlDecode编码测试 StatuDesc状态码信息获取测试 ExtMime后缀名获取文件mime测试 IsDirectoryIsRegular测试 VaildPath请求路径有效性判断测试 总编译 无异常符合预期 测试案例代码
int main()
{std::cout VaildPath(/html/../../index.html) std::endl;/*测试(IsDirectory)(IsRegular)std::cout IsRegular(../regex/regex.cpp) std::endl;std::cout IsRegular(../regex) std::endl;std::cout IsDirectory(../regex/regex.cpp) std::endl;std::cout IsDirectory(../regex) std::endl;*//*测试(StatuDesc)(ExtMime)std::cout StatuDesc(200) std::endl;std::cout ExtMime(a.png) std::endl;*//*测试(UrlEncode)(UrlDecode)std::string str C ;std::string res UrlEncode(str, false);std::string tmp UrlDecode(res, false);std::cout [ res ]\n;std::cout [ tmp ]\n;*//*测试(UrlEncode)std::string str /login?userqingfengyugupasswwdC;std::string res UrlEncode(str, false);std::cout res std::endl;*//*测试(ReadFile)(ReadFile)std::string buf;bool ret ReadFile(../eventfd/eventfd.c, buf);if (ret false)return false;ret WriteFile(./ttt.c, buf);if (ret false)return false;*//*测试(Split)std::string str abc,,,;std::vectorstd::string arry;Split(str, ,, arry);for (auto s : arry){std::cout [ s ]\n;}*/return 0;
} 补充 trunc截断
参考文献
c 输入输出流 ios::out 和ios::trunc有什么区别-CSDN博客 编码格式的规定 md5sum校验和比较两个文件是否一致
参考文献
Linux下使用md5sum计算和检验MD5码 - 知乎 (zhihu.com) 新增gdb调试手法
建议参考文献
GDB调试run和start的区别_gdb start-CSDN博客
gdb 的 s 和 si 指令有什么区别 - CSDN文库
详解gdb常用指令 | CS笔记 (pynote.net)
