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| #include "httpresponse.h"
#include <fcntl.h>
#include <string>
#include <sys/mman.h>
#include <sys/stat.h>
const std::unordered_map<std::string, std::string> HttpResponse::SUFFIX_TYPE = {
{".html", "text/html"},
{".xml", "text/xml"},
{".xhtml", "application/xhtml+xml"},
{".txt", "text/plain"},
{".rtf", "application/rtf"},
{".pdf", "application/pdf"},
{".word", "application/nsword"},
{".png", "image/png"},
{".gif", "image/gif"},
{".jpg", "image/jpeg"},
{".jpeg", "image/jpeg"},
{".au", "audio/basic"},
{".mpeg", "video/mpeg"},
{".mpg", "video/mpeg"},
{".avi", "video/x-msvideo"},
{".gz", "application/x-gzip"},
{".tar", "application/x-tar"},
{".css", "text/css "},
{".js", "text/javascript "},
};
const std::unordered_map<int, std::string> HttpResponse::CODE_STATUS = {
{200, "OK"},
{400, "Bad Request"},
{403, "Forbidden"},
{404, "Not Found"},
};
const std::unordered_map<int, std::string> HttpResponse::CODE_PATH = {
{400, "/400.html"},
{403, "/403.html"},
{404, "/404.html"},
};
HttpResponse::HttpResponse() {
code_ = -1;
path_ = srcDir_ = "";
isKeepAlive_ = false;
mmFile_ = nullptr;
mmFileStat_ = {0};
}
HttpResponse::~HttpResponse() { UnmapFile(); }
void HttpResponse::Init(const std::string &srcDir, std::string &path,
bool isKeepAlive, int code) {
assert(srcDir != "");
if (mmFile_) UnmapFile();
code_ = code;
isKeepAlive_ = isKeepAlive;
path_ = path;
srcDir_ = srcDir;
mmFile_ = nullptr;
mmFileStat_ = { 0 };
}
void HttpResponse::MakeResponse(Buffer &buff) {
if (stat((srcDir_ + path_).data(), &mmFileStat_) < 0 ||
S_ISDIR(mmFileStat_.st_mode))
code_ = 404;
else if (!(mmFileStat_.st_mode & S_IROTH)) {
code_ = 403;
} else if (code_ == -1) {
code_ = 200;
}
ErrorHtml_();
AddStateLine_(buff);
AddHeader_(buff);
AddContent_(buff);
}
void HttpResponse::UnmapFile() {
if (mmFile_) {
munmap(mmFile_, mmFileStat_.st_size);
mmFile_ = nullptr;
}
}
char *HttpResponse::File() { return mmFile_; }
size_t HttpResponse::FileLen() const { return mmFileStat_.st_size; }
void HttpResponse::ErrorContent(Buffer &buff, std::string message) {
std::string body;
std::string status;
body += "<html><title>Error</title>";
body += "<body bgcolor=\"ffffff\">";
if (CODE_STATUS.count(code_) == 1) {
status = CODE_STATUS.find(code_)->second;
} else {
status = "Bad Request";
}
body += std::to_string(code_) + " : " + status + "\n";
body += "<p>" + message + "</p>";
body += "<hr><em>TinyWebServer</em></body></html>";
buff.Append("Content-length: " + std::to_string(body.size()) + "\r\n\r\n");
buff.Append(body);
}
int HttpResponse::Code() const { return code_; }
void HttpResponse::AddStateLine_(Buffer &buff) {
std::string status;
if (CODE_STATUS.count(code_) == 1) {
status = CODE_STATUS.find(code_)->second;
} else {
code_ = 400;
status = CODE_STATUS.find(code_)->second;
}
buff.Append("HTTP/1.1 " + std::to_string(code_) + " " + status +
"\r\n");
}
void HttpResponse::AddHeader_(Buffer &buff) {
buff.Append("Connection: ");
if (isKeepAlive_) {
buff.Append("keep-alive\r\n");
buff.Append("keep-alive: max=6, timeout=120\r\n");
} else {
buff.Append("close\r\n");
}
buff.Append("Content-type: " + GetFileType_() + "\r\n");
}
void HttpResponse::AddContent_(Buffer &buff) {
int srcFd = open((srcDir_ + path_).data(), O_RDONLY);
if (srcFd < 0) {
ErrorContent(buff, "File NotFound!");
return;
}
LOG_DEBUG("file path %s", (srcDir_ + path_).data());
int *mmRet = (int *)mmap(nullptr, mmFileStat_.st_size, PROT_READ, MAP_PRIVATE,
srcFd, 0);
if (*mmRet == -1) {
ErrorContent(buff, "File NotFound!");
return;
}
mmFile_ = (char *)mmRet;
close(srcFd);
buff.Append("Content-length: " + std::to_string(mmFileStat_.st_size) +
"\r\n\r\n");
}
void HttpResponse::ErrorHtml_() {
if (CODE_PATH.count(code_) == 1) {
path_ = CODE_PATH.find(code_)->second;
stat((srcDir_ + path_).data(), &mmFileStat_);
}
}
std::string HttpResponse::GetFileType_() {
std::string::size_type idx = path_.find_last_of('.');
if (idx == std::string::npos)
return "text/plain";
std::string suffix = path_.substr(idx, path_.length() - idx);
if (SUFFIX_TYPE.count(suffix) == 1)
return SUFFIX_TYPE.find(suffix)->second;
return "text/plain";
}
|
