across.c

#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "ncsa.h"
#include "query.h"

#define MAX_ALLOWED 64

void	list_words(char *);
int  okay_word(char *);

int	main(int argc, char **argv) {
	int i, j; /* counters */
	int n;	/* string length */
	int nofoul; /* boolean value, 0 indicates foul language */
	char nowstring[255];
	char query_string[2048];
	char query[255];
	char lquery[255];
	char pQuery[255];
	char *pWhere;
	time_t now;
	struct tm nowstruct;
	FILE *fp;

	now = time(NULL);
	strcpy(nowstring, asctime(localtime(&now)));
	setvbuf( stdout, NULL, _IONBF, 0); /* stdout buffering off */
	pWhere = getenv("REMOTE_ADDR");
	strcpy(query_string, getenv("QUERY_STRING"));
	get_var(pQuery, "r", query_string);
	strncpy(query, pQuery, MAX_ALLOWED);
	/* Limit characters to alphanumeric, space, dash or period.
		Replace others with period. Keep in mind that spaces
		were converted to '+'. */
	for (i=0;query[i];i++) 
		query[i]=
			(isalnum(query[i])||(query[i]=='%')||
				(query[i]=='+')||(query[i]=='-'))?query[i]:'.';

	for (i=0; query[i]; i++)
		lquery[i] = tolower(query[i]);

	printf("<p><h3><center>Thank you for visiting my site on %s \n"
			"<p>from %s.\n"
			"<p>Please come again!</center></h3>\n",
			nowstring, pWhere);

	if (fp = fopen("../data/across.cnt", "r")) {
		fscanf(fp, "%d", &n);
		fclose(fp);
		if (*pQuery) n++;
	} else {
		n=1;
	}
	fp = fopen("../data/across.cnt", "w");
	fprintf(fp, "%06d\n\n", n);
	fclose(fp);

	if (*query) {
		/* check to see if string contains foul language, if so
		   log it seperately.
		*/
		nofoul=okay_word(query);
		if (nofoul)
			fp=fopen("../data/across.log", "a");
		else
			fp=fopen("../data/bad_across.log", "a");
		
		if (fp) {
			fprintf(fp, "%06d, %s, %s, %s", n, lquery, pWhere, nowstring);
			fclose(fp);
		} else {
			printf("<strong><center>Log Failed!</center></strong>\n");
		}
	}

	if (!nofoul)
		printf("<p><h1><center><b>But please don't use punctuation or foul language here!!"
			"</b></center></h1>");
	else {
	plustospace(query);
	unescape_url(query);

	printf("<p>Original input was: %s<br>\n", query);

	printf(
		"<center><h2><strong>\n"
		"<table border=10>\n" 
		"<th><center>Output is as follows:</center></th>\n"
		"<th><center>Previous words have been:</center></th><tr>\n"
		"<td><center><table border=5>\n"
	); 

	n = strlen(query);
	for (j=0; j<n; j++) {
		for (i=0; i<n; i++) {
			printf("<td>%c</td>", query[(j+i)%n]);
		}
		printf("<tr>\n");
	}
	printf(
		"</table></center></td>\n"
		"<td><form action=\"\"><h4><textarea name=hi OnFocus=\"this.blur();\" cols=24 rows=5 >\n"
	);
	list_words("../data/across.log");
	printf(
		"</textarea></h4></form></td>\n"
		"</table>\n"
		"</strong></h2></center>\n"
		"<hr width=\"60%\">\n"

		"<table class=\"hidden\" width=\"90%\">\n"
		"<td class=\"hidden\" link=\"#009999\"><a href=\"http://www.google.com\"><h2>google</h2></a></td>\n"
		"<td class=\"hidden\" ><form action=\"http://www.google.com/search\">\n"
		"<input type=\"text\" name=\"q\" size=40 >\n"
		"</form></td>\n"
		"<td class=\"hidden\" >source:</td>\n"
		"<td class=\"hidden\" ><a href=\"/cgi-bin/source.pl?s=../sources/across.c\">across.c</a></td><tr>\n"

		"<td class=\"hidden\" >another word</td>\n"
		"<td class=\"hidden\" ><form action=\"/cgi-bin/across.pl\">\n"
		"<input type=\"text\" name=\"r\" size=40 >\n"
		"</form></td>\n"
		"<td class=\"hidden\" >visit:</td>\n"
		"<td class=\"hidden\" ><a href=\"http://mcsuper5.freeshell.org\"><h4>http://mcsuper5.freeshell.org/</h4></a></td><tr>\n"
		
		"</table>\n"
	);
	}
	return 0;
} /* main */

void	list_words(char *fname) {
	FILE *fp;
	char buffer[255];
	
	/* cut using , for delimiter, use field 2 only.  Sort ignoring
		leading blanks -b, ignore case -f, unique lines only -u. */
	system("cut -d, -f2 ../data/across.log | sort -bfu >../data/temp");
	if (fp=fopen("../data/temp","r")) {
		while (!feof(fp)) {
			fgets(buffer, 255, fp);
			if (feof(fp)) break;
			plustospace(buffer);
			unescape_url(buffer);
			fputs(buffer, stdout);
		}
		fclose(fp);
		unlink("../data/temp");
	} else printf ("\n unable to access temp in list words\n");
} /* list_words */

int	okay_word(char *check) {
	FILE *foul;
	int	okay=1;
	char word[80];

	if (strlen(check)==0) return 0; /* don't add empty string */
	foul=fopen("../data/foul.language", "r");
	if (!foul) return okay; /* couldn't open file, we'll assume it's ok */
	while (EOF!=fscanf(foul, "%s ", word)) {
		if (strstr(check, word)) {
			okay = 0;
			break;
		}
	}
	fclose(foul);
	return okay;
} /* okay_word */
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Friday, 4 July 2025 Michael J. Chappell Contact me at: mcsuper5@freeshell.org
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