/*
 * SARG Squid Analysis Report Generator      http://sarg.sourceforge.net
 *                                                            1998, 2013
 *
 * SARG donations:
 *      please look at http://sarg.sourceforge.net/donations.php
 * Support:
 *     http://sourceforge.net/projects/sarg/forums/forum/363374
 * ---------------------------------------------------------------------
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
 *
 */

#include "include/conf.h"
#include "include/defs.h"

static void show_ignored_denied(FILE *fp_ou,int count)
{
	char ignored[80];

	snprintf(ignored,sizeof(ignored),ngettext("%d more denied access not shown here&hellip;","%d more denied accesses not shown here&hellip;",count),count);
	fprintf(fp_ou,"<tr><td class=\"data\"></td><td class=\"data\"></td><td class=\"data\"></td><td class=\"data2 more\">%s</td></tr>\n",ignored);
}

void gen_denied_report(void)
{
	FILE *fp_in = NULL, *fp_ou = NULL;

	char *buf;
	char *url;
	char denied_in[MAXLEN];
	char report[MAXLEN];
	char ip[MAXLEN];
	char oip[MAXLEN];
	char user[MAXLEN];
	char ouser[MAXLEN];
	char ouser2[MAXLEN];
	char data[15];
	char hora[15];
	bool  z=false;
	int  count=0;
	int day,month,year;
	bool new_user;
	struct getwordstruct gwarea;
	longline line;
	struct userinfostruct *uinfo;
	struct tm t;

	ouser[0]='\0';
	ouser2[0]='\0';

	sprintf(denied_in,"%s/denied.int_log",tmp);
	if (!denied_count) {
		if (!KeepTempLog && unlink(denied_in))
			debuga(_("Cannot delete \"%s\": %s\n"),denied_in,strerror(errno));
		if (debugz) debugaz(_("Denied report not produced because it is empty\n"));
		return;
	}

	sprintf(report,"%s/denied.html",outdirname);

	if((fp_in=MY_FOPEN(denied_in,"r"))==NULL) {
		debuga(_("(denied) Cannot open log file %s\n"),denied_in);
		exit(EXIT_FAILURE);
	}

	if((fp_ou=MY_FOPEN(report,"w"))==NULL) {
		debuga(_("(denied) Cannot open log file %s\n"),report);
		exit(EXIT_FAILURE);
	}

	write_html_header(fp_ou,(IndexTree == INDEX_TREE_DATE) ? 3 : 1,_("Denied"),HTML_JS_NONE);
	fputs("<tr><td class=\"header_c\">",fp_ou);
	fprintf(fp_ou,_("Period: %s"),period.html);
	fputs("</td></tr>\n",fp_ou);
	fprintf(fp_ou,"<tr><th class=\"header_c\">%s</th></tr>\n",_("Denied"));
	close_html_header(fp_ou);

	fputs("<div class=\"report\"><table cellpadding=\"0\" cellspacing=\"2\">\n",fp_ou);
	fprintf(fp_ou,"<tr><th class=\"header_l\">%s</th><th class=\"header_l\">%s</th><th class=\"header_l\">%s</th><th class=\"header_l\">%s</th></tr>\n",_("USERID"),_("IP/NAME"),_("DATE/TIME"),_("ACCESSED SITE"));

	if ((line=longline_create())==NULL) {
		debuga(_("Not enough memory to read the denied accesses\n"));
		exit(EXIT_FAILURE);
	}

	while((buf=longline_read(fp_in,line))!=NULL) {
		getword_start(&gwarea,buf);
		if (getword(data,sizeof(data),&gwarea,'\t')<0 || getword(hora,sizeof(hora),&gwarea,'\t')<0 ||
		    getword(user,sizeof(user),&gwarea,'\t')<0 || getword(ip,sizeof(ip),&gwarea,'\t')<0) {
			debuga(_("There is a broken record or garbage in file %s\n"),denied_in);
			exit(EXIT_FAILURE);
		}
		if (getword_ptr(buf,&url,&gwarea,'\t')<0) {
			debuga(_("There is a broken url in file %s\n"),denied_in);
			exit(EXIT_FAILURE);
		}
		if (sscanf(data,"%d/%d/%d",&day,&month,&year)!=3) continue;
		computedate(year,month,day,&t);
		strftime(data,sizeof(data),"%x",&t);

		uinfo=userinfo_find_from_id(user);
		if (!uinfo) {
			debuga(_("Unknown user ID %s in file %s\n"),user,denied_in);
			exit(EXIT_FAILURE);
		}

		new_user=false;
		if(!z) {
			strcpy(ouser,user);
			strcpy(oip,ip);
			z=true;
			new_user=true;
		} else {
			if(strcmp(ouser,user) != 0) {
				strcpy(ouser,user);
				new_user=true;
			}
			if(strcmp(oip,ip) != 0) {
				strcpy(oip,ip);
				new_user=true;
			}
		}

		if(DeniedReportLimit) {
			if(strcmp(ouser2,uinfo->label) == 0) {
				count++;
			} else {
				if(count>DeniedReportLimit && DeniedReportLimit>0)
					show_ignored_denied(fp_ou,count-DeniedReportLimit);
				count=1;
				strcpy(ouser2,uinfo->label);
			}
			if(count > DeniedReportLimit)
				continue;
		}

		fputs("<tr>",fp_ou);
		if (new_user) {
			if (uinfo->topuser)
				fprintf(fp_ou,"<td class=\"data\"><a href=\"%s/%s.html\">%s</a></td><td class=\"data\">%s</td>",uinfo->filename,uinfo->filename,uinfo->label,ip);
			else
				fprintf(fp_ou,"<td class=\"data\">%s</td><td class=\"data\">%s</td>",uinfo->label,ip);
		} else
			fputs("<td class=\"data\"></td><td class=\"data\"></td>",fp_ou);
		fprintf(fp_ou,"<td class=\"data\">%s-%s</td><td class=\"data2\">",data,hora);
		if(BlockIt[0] != '\0' && url[0]!=ALIAS_PREFIX) {
			fprintf(fp_ou,"<a href=\"%s%s?url=",wwwDocumentRoot,BlockIt);
			output_html_url(fp_ou,url);
			fprintf(fp_ou,"\"><img src=\"%s/sarg-squidguard-block.png\"></a>&nbsp;",ImageFile);
		}
		output_html_link(fp_ou,url,100);
		fputs("</td></tr>\n",fp_ou);
	}
	fclose(fp_in);
	longline_destroy(&line);

	if(count>DeniedReportLimit && DeniedReportLimit>0)
		show_ignored_denied(fp_ou,count-DeniedReportLimit);

	fputs("</table></div>\n",fp_ou);
	if (write_html_trailer(fp_ou)<0)
		debuga(_("Write error in file %s\n"),report);
	if (fclose(fp_ou)<0)
		debuga(_("Failed to close file %s - %s\n"),report,strerror(errno));

	if (!KeepTempLog && unlink(denied_in)==-1)
		debuga(_("Cannot delete \"%s\": %s\n"),denied_in,strerror(errno));

	return;
}
