BBS水木清华站∶精华区

发信人: xcec (money), 信区: Linux
标  题: guestbook-->cgi.h, cgi.cpp
发信站: BBS 水木清华站 (Mon Jan 17 13:04:30 2000) WWW-POST

//cgi.h
#ifndef CGI_H
#define CGI_H

struct NameValue {
char *name;
char *value;
public:
void decode();
};

struct CGI {
int argnum;
NameValue *namevalue;
char *buffer;
public:
CGI();
};

#endif

//cgi.cpp
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cgi.h"
#include "myutili.h"

CGI::CGI()
{
    //buffer
    char *method = getenv("REQUEST_METHOD");
    if (!method) {
        argnum = 0;
        namevalue = NULL;
        buffer = "\0";
        return;
    }

    if (0 == strcmp(method, "GET")) { //GET method
        buffer = new char[strlen(getenv("QUERY_STRING"))+1];
        strcpy(buffer, getenv("QUERY_STRING"));
    }
    else if (0 == strcmp(method, "POST")) { //Post method
        int length = atoi(getenv("CONTENT_LENGTH"));
        buffer=new char[length + 1];
        fgets(buffer, length + 1, stdin);
        buffer[length]='\0';
    }
    else {
        argnum = 0;
        namevalue = NULL;
        buffer = "\0";
        return;
    }

    if (0 == strlen(buffer)) { //
        argnum=0;
        namevalue=new NameValue[0];
    }
    else { //
        //
        argnum=1;
        char *p=buffer;
        while (*p) {
            if (*p=='&') argnum++;
            p++;
        }

        namevalue=new NameValue[argnum];
        int i=0;
        p=buffer;
        //Name-Value pair
        namevalue[0].name=p;
        while (*p) {
            if (*p=='=') {
                *p='\0';
                namevalue[i].value=++p;
            }
            else if (*p=='&') {
                *p='\0';
                namevalue[++i].name=++p;
            }
            else p++;
        }

        for (i = 0; i < argnum; i++)
            namevalue[i].decode();
    }
}

void NameValue::decode()
{
    int i, j;
    i=j=0;
    while (value[i]) {
        if (value[i] == '+') {
            value[j++] = ' ';
            i++;
        }
        else if (value[i] == '%') {
            value[j++] = char2num(value[i+1])*16 + char2num(value[i+2]);
            i+=3;
        }
        else
            value[j++] = value[i++];
    }
    value[j] = value[i];
}

--
※ 来源:·BBS 水木清华站 smth.org·[FROM: 162.105.33.162]