000
17.01.2008, 11:03 Uhr
Blubber2063
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Hi Leute,
ich bin langsam ratlos, ich hab ein kleines CGI in C++ geschrieben, weil unser uni webserver meines wissens nur cgis zulaesst. Das ganze soll einfach nur den Inhalt von 2 Formfeldern in einer Datei ablegen.
Das ablegen hatte auch mal funktioniert, jetzt kriege ich jedoch nur noch die Datei mit 0 Byte erzeugt, lasse ich das cgi als normales Programm laufen, dann schreibt er die Datei trotzdem nicht. Hier mal der Code vielleicht habt ihr ja noch Ideen:
| C++: |
#include <iostream>
#include <string>
#include <cstdlib>
#include <fstream>
#include <sstream>
#include <map>
std::map<std::string, std::string> * parseQueryString(std::string& input, int & err){
std::string tmpdom = "";
std::string tmpcodom = "";
bool parsingDom = true;
err = 0;
//std::fstream evalFile("eval.erg", std::fstream::in | std::fstream::out | std::fstream::trunc);
/*if (!evalFile)
err = 1;*/
if (input == "")
return NULL;
std::map<std::string, std::string> * query = new std::map<std::string, std::string>();
for(std::string::const_iterator it = input.begin() ; it < input.end(); it++ ){
if ((*it) == '&'){
(*query)[tmpdom] = tmpcodom;
parsingDom = true;
tmpdom = "";
tmpcodom = "";
//evalFile << "& detected" << std::endl;
continue;
}
if ((*it) == '='){
parsingDom = false;
//evalFile << "= detected" << std::endl;
continue;
}
if (parsingDom)
tmpdom += *it;
else
tmpcodom += *it;
//evalFile << "durchlauf" << *it << std::endl;
}
if (tmpdom != "")
(*query)[tmpdom] = tmpcodom;
//evalFile.close();
return query;
}
int main(int argc, char** argv){
std::fstream evalFile("eval.erg", std::fstream::in | std::fstream::out | std::fstream::app);
if (!evalFile.is_open())
evalFile.open("eval.erg", std::fstream::in | std::fstream::out | std::fstream::trunc);
int err = 0;
evalFile << "evalFILE";
std::string requestMethod = getenv("REQUEST_METHOD");
std::string queryString = "";
std::string postQueryString = "";
char* tmp = NULL;
std::stringstream postdata("");
char buf;
tmp = getenv("QUERY_STRING");
if (tmp != NULL)
queryString = tmp;
std::map<std::string, std::string> * query = parseQueryString(queryString, err);
std::map<std::string, std::string> * postquery = NULL;
if (requestMethod == "POST"){
//Sstd::cout << "err";
char * cont_len = getenv("CONTENT_LENGTH");
if (cont_len != NULL){
unsigned int length = 0;
std::stringstream conv;
conv << cont_len;
conv >> length;
for(unsigned int i = 0; i < length; i++){
std::cin.get(buf);
postdata.write(&buf, 1);
}
postQueryString = postdata.str();
postquery = parseQueryString(postQueryString, err);
if (postquery != NULL){
evalFile << (*postquery)["Kommentar"] << std::endl;
evalFile << (*postquery)["Bewertung"] << std::endl;
}
}
}
evalFile.flush();
evalFile.close();
std::string page = "";
if (query != NULL)
page = (*query)["page"];
std::string openSite = "<html>";
std::string endSite = "</html>";
std::string header = "<head><title>Evaluation Tutorium Björn Breitmeyer</title></head>";
std::string openBody = "<body>";
std::string endBody = "</body>";
std::stringstream form("");
form << "<form action=eval.cgi?page=danke method=POST>";
form << "<center><b>Bitte geben Sie Ihren Namen ein :</b><br>";
form << "<input name=\"Bewertung\" size=\"40\" maxlength=\"20\"> </input><br>";
form << "<textarea name=\"Kommentar\" size=\"40\" cols=\"46\" rows=\"30\"> </textarea><br>";
form << "<input type=submit value=\"abschicken\"></center><br>";
form << "</form>";
std::cout << "Content-type: text/html\r\n";
std::cout << "\r\n";
std::cout << openSite;
std::cout << header;
std::cout << openBody;
//std::cout << requestMethod;
if (page!="danke")
std::cout << form.str();
else{
std::cout << "<center>Danke für deinen Meinung<br>";
std::cout << "<a href=\"http://cs.tu-berlin.de/~bjbreitm/eval.cgi\">Zurück News</a></center>";
}
if (postquery){
for (std::map<std::string, std::string>::const_iterator it = postquery->begin(); it != postquery->end(); it++)
std::cout << "<p>" << it->first << "=" << it->second << "</p>";
}
std::cout << "<p>queryData</p>";
if (err)
std::cout << "<p>file not created</p>";
if (query){
for (std::map<std::string, std::string>::const_iterator it = query->begin(); it != query->end(); it++)
std::cout << "<p>" << it->first << "=" << it->second << "</p>";
}
//std::cout << queryString;
std::cout << err;
std::cout << endBody;
std::cout << endSite;
delete query;
delete postquery;
}
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