hiddenform2.c

JAVA分布式程序学习的课件（全英文）

/* hiddenForm2.c - source code for hiddenForm2.cgi
   Author: M. L. Liu.
   This script simply displays the name-value pairs it
   receives in the query string, which should include
   the name-value pairs the appeared in the hidden-form 
   of the web page which invokes this script.
*/
#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 use the POST METHOD.\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("<H2>This form was dynamically generated by ",
           "hiddenForm2.cgi</H2>");
    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>%c",entries[x].name,
               entries[x].val,10);
    printf("</UL>%c",10);
    printf("</HTML>");
    printf("</BODY>");
}