📄 postform.c

📁 JAVA分布式程序学习的课件（全英文）

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/*  Author: M. L. Liu, based on a NCSA CGI tutorial sample. 
    This is the source code for postForm.cgi, for the simple 
    form example.  It is invoked from postForm.html, and 
    generates a dynamic web page which displays the name-
    value pairs obtained from postForm.html.   
    This program uses the NCSA CGI library for processing a
    query string obtained via the POST method.
*/
#include <stdio.h>
#ifndef NO_STDLIB_H
#include <stdlib.h>
#else
char *getenv();
#endif

#define MAX_ENTRIES 10000

typedef struct {
    char *name;
    char *val;
} entry;

char *makeword(char *line, char stop);
char *fmakeword(FILE *f, char stop, int *len);
char x2c(char *what);
void unescape_url(char *url);
void plustospace(char *str);


main(int argc, char *argv[]) {
    entry entries[MAX_ENTRIES];
    register int x,m=0;
    int cl;

    printf("Content-type: text/html%c%c",10,10);
    if(strcmp(getenv("REQUEST_METHOD"),"POST")) {
        printf("This script should be referenced ",
               "with a METHOD of POST.\n");
        exit(1);
    }
    if(strcmp(getenv("CONTENT_TYPE"),
      "application/x-www-form-urlencoded")) {
        printf("The query string does not contain ",
               "URL-encoded data \n");
        exit(1);
    }
    cl = atoi(getenv("CONTENT_LENGTH"));

    for(x=0;cl && (!feof(stdin));x++) {
        m=x;
        entries[x].val = fmakeword(stdin,'&',&cl);
        plustospace(entries[x].val);
        unescape_url(entries[x].val);
        entries[x].name = makeword(entries[x].val,'=');
    }
    printf("<body bgcolor=\"#FFFF99\">");
    printf("<H1>Query Results</H1>");
    printf("You submitted the following name/value pairs:",
           "<p>%c",10);
    printf("<ul>%c",10);

    for(x=0; x <= m; x++)
      printf("<li> <code>%s = %s</code>\n",entries[x].name,
               entries[x].val);
    printf("</body>");
    printf("</html>");  
}

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