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/*
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* Copyright (C) 1999 Ross Combs (rocombs@cs.nmsu.edu)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#define ADBANNER_INTERNAL_ACCESS
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#include "common/setup_before.h"
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#include <stdio.h>
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#ifdef HAVE_STDDEF_H
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# include <stddef.h>
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#else
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# ifndef NULL
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# define NULL ((void *)0)
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# endif
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#endif
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#ifdef STDC_HEADERS
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# include <stdlib.h>
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#else
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# ifdef HAVE_MALLOC_H
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# include <malloc.h>
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# endif
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#else
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# ifdef HAVE_STRINGS_H
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# include <strings.h>
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# endif
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#endif
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#ifdef HAVE_ASSERT_H
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# include <assert.h>
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#endif
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#include "compat/strrchr.h"
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#include "compat/strdup.h"
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#include "compat/strcasecmp.h"
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#include <errno.h>
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#include "compat/strerror.h"
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#include "common/tag.h"
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#include "common/bn_type.h"
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#include "common/eventlog.h"
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#include "common/list.h"
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#include "common/util.h"
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#include "common/xalloc.h"
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#include "connection.h"
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#include "adbanner.h"
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#include "common/setup_after.h"
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static t_list * adbannerlist_init_head=NULL;
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static t_list * adbannerlist_start_head=NULL;
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static t_list * adbannerlist_norm_head=NULL;
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static unsigned int adbannerlist_init_count=0;
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static unsigned int adbannerlist_start_count=0;
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static unsigned int adbannerlist_norm_count=0;
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static t_adbanner * adbanner_create(unsigned int id, unsigned int next_id, unsigned int delay, bn_int tag, char const * filename, char const * link, char const * client);
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static int adbanner_destroy(t_adbanner const * ad);
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static int adbannerlist_insert(t_list * head, unsigned int * count, char const * filename, unsigned int delay, char const * link, unsigned int next_id, char const * client);
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static t_adbanner * adbannerlist_find_adbanner_by_id(t_list const * head, unsigned int id, t_clienttag clienttag);
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static t_adbanner * adbannerlist_get_random(t_list const * head, t_clienttag client);
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static t_adbanner * adbanner_create(unsigned int id, unsigned int next_id, unsigned int delay, bn_int tag, char const * filename, char const * link, char const * client)
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{
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t_adbanner * ad;
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if (!filename)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"got NULL filename");
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return NULL;
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}
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if (!link)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"got NULL link");
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return NULL;
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}
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if (!client)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"got NULL client");
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return NULL;
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}
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ad = xmalloc(sizeof(t_adbanner));
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ad->id = id;
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ad->extensiontag = bn_int_get(tag);
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ad->delay = delay;
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ad->next = next_id;
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ad->filename = xstrdup(filename);
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ad->link = xstrdup(link);
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if (strcasecmp(client,"NULL")==0)
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ad->client = 0;
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else
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ad->client = clienttag_str_to_uint(client);
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/* I'm aware that this statement looks stupid */
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if (ad->client && (!tag_check_client(ad->client)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"banner with invalid clienttag \"%s\"encountered",client);
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xfree((void *)ad->link);
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xfree((void *)ad->filename); /* avoid warning */
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xfree(ad);
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return NULL;
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}
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eventlog(eventlog_level_debug,__FUNCTION__,"created ad id=0x%08x filename=\"%s\" extensiontag=0x%04x delay=%u link=\"%s\" next_id=0x%08x client=\"%s\"",ad->id,ad->filename,ad->extensiontag,ad->delay,ad->link,ad->next,ad->client?client:"");
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return ad;
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}
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static int adbanner_destroy(t_adbanner const * ad)
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{
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if (!ad)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"got NULL ad");
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return -1;
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}
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xfree((void *)ad->filename); /* avoid warning */
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xfree((void *)ad->link); /* avoid warning */
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xfree((void *)ad); /* avoid warning */
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return 0;
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}
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extern t_adbanner * adbanner_get(t_connection const * c, unsigned int id)
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{
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t_adbanner * banner;
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t_clienttag ctag = conn_get_clienttag(c);
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banner = adbannerlist_find_adbanner_by_id(adbannerlist_init_head,id,ctag);
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if (!banner) banner = adbannerlist_find_adbanner_by_id(adbannerlist_start_head,id,ctag);
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if (!banner) banner = adbannerlist_find_adbanner_by_id(adbannerlist_norm_head,id,ctag);
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return banner;
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}
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extern t_adbanner * adbanner_pick(t_connection const * c, unsigned int prev_id)
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{
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t_adbanner const * prev;
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unsigned int next_id;
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t_clienttag ctag;
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if (!c)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"got NULL connection");
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return NULL;
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}
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ctag = conn_get_clienttag(c);
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/* sowater, 2005-04-14 */
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if(ctag=clienttag_str_to_uint("D2XP")) {
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char checknum;
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unsigned int id=0;
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t_connection const * t=c;
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t_adbanner * adbanner_checknum;
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checknum=conn_get_checknum(t);
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id|=checknum;
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eventlog(eventlog_level_debug,__FUNCTION__,"got checknum: %c, banner id: %u",checknum,id);
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if(adbanner_checknum=adbannerlist_find_adbanner_by_id(adbannerlist_norm_head,id,ctag))
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return adbanner_checknum;
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eventlog(eventlog_level_debug,__FUNCTION__,"not sending checknum banner");
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return NULL;
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}else{
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eventlog(eventlog_level_debug,__FUNCTION__,"prev_id=%u init_count=%u start_count=%u norm_count=%u",prev_id,adbannerlist_init_count,adbannerlist_start_count,adbannerlist_norm_count);
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/* if this is the first ad, randomly choose an init sequence (if there is one) */
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if (prev_id==0 && adbannerlist_init_count>0)
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return adbannerlist_get_random(adbannerlist_init_head,ctag);
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// return list_get_data_by_pos(adbannerlist_init_head,((unsigned int)rand())%adbannerlist_init_count);
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eventlog(eventlog_level_debug,__FUNCTION__,"not sending init banner");
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/* find the previous adbanner */
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if ((prev = adbannerlist_find_adbanner_by_id(adbannerlist_init_head,prev_id,ctag)))
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next_id = prev->next;
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else if ((prev = adbannerlist_find_adbanner_by_id(adbannerlist_start_head,prev_id,ctag)))
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next_id = prev->next;
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else if ((prev = adbannerlist_find_adbanner_by_id(adbannerlist_norm_head,prev_id,ctag)))
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next_id = prev->next;
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else
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next_id = 0;
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/* return its next ad if there is one */
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if (next_id)
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{
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t_adbanner * curr;
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if ((curr = adbannerlist_find_adbanner_by_id(adbannerlist_init_head,next_id,ctag)))
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return curr;
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if ((curr = adbannerlist_find_adbanner_by_id(adbannerlist_start_head,next_id,ctag)))
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return curr;
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if ((curr = adbannerlist_find_adbanner_by_id(adbannerlist_norm_head,next_id,ctag)))
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return curr;
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eventlog(eventlog_level_error,__FUNCTION__,"could not locate next requested ad with id 0x%06x",next_id);
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}
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/* eventlog(eventlog_level_debug,__FUNCTION__,"not sending next banner"); */
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/* otherwise choose another starting point randomly */
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if (adbannerlist_start_count>0)
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return adbannerlist_get_random(adbannerlist_start_head,ctag);
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eventlog(eventlog_level_debug,__FUNCTION__,"not sending start banner... nothing to return");
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return NULL; /* nothing else to return */
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}
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}
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extern unsigned int adbanner_get_id(t_adbanner const * ad)
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{
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if (!ad)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"got NULL ad");
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return 0;
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}
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return ad->id;
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}
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extern unsigned int adbanner_get_extensiontag(t_adbanner const * ad)
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{
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if (!ad)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"got NULL ad");
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return 0;
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}
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return ad->extensiontag;
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}
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extern char const * adbanner_get_filename(t_adbanner const * ad)
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{
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if (!ad)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"got NULL ad");
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return NULL;
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}
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return ad->filename;
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}
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extern char const * adbanner_get_link(t_adbanner const * ad)
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{
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if (!ad)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"got NULL ad");
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return NULL;
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}
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return ad->link;
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}
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extern t_clienttag adbanner_get_client(t_adbanner const * ad)
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{
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if (!ad)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"got NULL ad");
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return CLIENTTAG_UNKNOWN_UINT;
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}
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return ad->client;
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}
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static t_adbanner * adbannerlist_find_adbanner_by_id(t_list const * head, unsigned int id, t_clienttag clienttag)
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{
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t_elem const * curr;
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t_adbanner * temp;
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if (!head)
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return NULL;
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LIST_TRAVERSE_CONST(head,curr)
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{
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| 292 |
if (!(temp = elem_get_data(curr)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"found NULL adbanner in list");
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continue;
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}
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| 297 |
if (temp->id==id && (temp->client == 0 || temp->client == clienttag))
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return temp;
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}
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| 300 |
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return NULL;
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}
|
| 303 |
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/*
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* Dizzy: maybe we should use a temporary list, right now we parse the list for
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* 2 times. It should not matter for servers without more than 20 ads :)
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*/
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static t_adbanner * adbannerlist_get_random(t_list const * head, t_clienttag client)
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{
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| 310 |
t_elem const * curr;
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t_adbanner * temp;
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unsigned int ccount, ocount, pos;
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| 313 |
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| 314 |
if (!head)
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return NULL;
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| 316 |
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ocount = 0; ccount = 0;
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| 318 |
LIST_TRAVERSE_CONST(head,curr)
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{
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| 320 |
if (!(temp = elem_get_data(curr)))
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{
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| 322 |
eventlog(eventlog_level_error,__FUNCTION__,"found NULL adbanner in list");
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continue;
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| 324 |
}
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| 325 |
if ((adbanner_get_client(temp) == client))
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| 326 |
ccount++;
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| 327 |
else if ((adbanner_get_client(temp) == 0))
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| 328 |
ocount++;
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| 329 |
}
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| 330 |
if (ccount) {
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| 331 |
pos = ((unsigned int)rand())%ccount;
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| 332 |
ccount = 0;
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| 333 |
LIST_TRAVERSE_CONST(head,curr)
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| 334 |
{
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| 335 |
if (!(temp = elem_get_data(curr))) continue;
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| 336 |
if ((adbanner_get_client(temp) == client))
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| 337 |
if (ccount++ == pos) return temp;
|
| 338 |
}
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| 339 |
eventlog(eventlog_level_error,__FUNCTION__,"found client ads but couldnt locate random chosed!");
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| 340 |
} else if (ocount) {
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| 341 |
pos = ((unsigned int)rand())%ocount;
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| 342 |
ocount = 0;
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| 343 |
LIST_TRAVERSE_CONST(head,curr)
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| 344 |
{
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| 345 |
if (!(temp = elem_get_data(curr))) continue;
|
| 346 |
if ((adbanner_get_client(temp) == 0))
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| 347 |
if (ocount++ == pos) return temp;
|
| 348 |
}
|
| 349 |
eventlog(eventlog_level_error,__FUNCTION__,"couldnt locate random chosed!");
|
| 350 |
}
|
| 351 |
|
| 352 |
return NULL;
|
| 353 |
}
|
| 354 |
|
| 355 |
|
| 356 |
static int adbannerlist_insert(t_list * head, unsigned int * count, char const * filename, unsigned int delay, char const * link, unsigned int next_id, char const * client)
|
| 357 |
{
|
| 358 |
t_adbanner * ad;
|
| 359 |
unsigned int id;
|
| 360 |
char * ext;
|
| 361 |
bn_int bntag;
|
| 362 |
|
| 363 |
assert(head != NULL);
|
| 364 |
assert(count != NULL);
|
| 365 |
assert(filename != NULL);
|
| 366 |
assert(link != NULL);
|
| 367 |
|
| 368 |
if (strlen(filename)<7)
|
| 369 |
{
|
| 370 |
eventlog(eventlog_level_error,__FUNCTION__,"got bad ad filename \"%s\"",filename);
|
| 371 |
return -1;
|
| 372 |
}
|
| 373 |
|
| 374 |
ext = xmalloc(strlen(filename));
|
| 375 |
|
| 376 |
if (sscanf(filename,"%*c%*c%x.%s",&id,ext)!=2)
|
| 377 |
{
|
| 378 |
eventlog(eventlog_level_error,__FUNCTION__,"got bad ad filename \"%s\"",filename);
|
| 379 |
xfree(ext);
|
| 380 |
return -1;
|
| 381 |
}
|
| 382 |
|
| 383 |
if (strcasecmp(ext,"pcx")==0)
|
| 384 |
bn_int_tag_set(&bntag,EXTENSIONTAG_PCX);
|
| 385 |
else if (strcasecmp(ext,"mng")==0)
|
| 386 |
bn_int_tag_set(&bntag,EXTENSIONTAG_MNG);
|
| 387 |
else if (strcasecmp(ext,"smk")==0)
|
| 388 |
bn_int_tag_set(&bntag,EXTENSIONTAG_SMK);
|
| 389 |
else
|
| 390 |
{
|
| 391 |
eventlog(eventlog_level_error,__FUNCTION__,"unknown extension on filename \"%s\"",filename);
|
| 392 |
xfree(ext);
|
| 393 |
return -1;
|
| 394 |
}
|
| 395 |
xfree(ext);
|
| 396 |
|
| 397 |
if (!(ad = adbanner_create(id,next_id,delay,bntag,filename,link,client)))
|
| 398 |
{
|
| 399 |
eventlog(eventlog_level_error,__FUNCTION__,"could not create ad");
|
| 400 |
return -1;
|
| 401 |
}
|
| 402 |
|
| 403 |
list_prepend_data(head,ad);
|
| 404 |
|
| 405 |
(*count)++;
|
| 406 |
|
| 407 |
return 0;
|
| 408 |
}
|
| 409 |
|
| 410 |
|
| 411 |
extern int adbannerlist_create(char const * filename)
|
| 412 |
{
|
| 413 |
FILE * fp;
|
| 414 |
unsigned int line;
|
| 415 |
unsigned int pos;
|
| 416 |
unsigned int len;
|
| 417 |
char * buff;
|
| 418 |
char * name;
|
| 419 |
char * when;
|
| 420 |
char * link;
|
| 421 |
char * client;
|
| 422 |
char * temp;
|
| 423 |
unsigned int delay;
|
| 424 |
unsigned int next_id;
|
| 425 |
|
| 426 |
if (!filename)
|
| 427 |
{
|
| 428 |
eventlog(eventlog_level_error,__FUNCTION__,"got NULL filename");
|
| 429 |
return -1;
|
| 430 |
}
|
| 431 |
|
| 432 |
adbannerlist_init_head = list_create();
|
| 433 |
adbannerlist_start_head = list_create();
|
| 434 |
adbannerlist_norm_head = list_create();
|
| 435 |
|
| 436 |
if (!(fp = fopen(filename,"r")))
|
| 437 |
{
|
| 438 |
eventlog(eventlog_level_error,__FUNCTION__,"could not open adbanner file \"%s\" for reading (fopen: %s)",filename,pstrerror(errno));
|
| 439 |
list_destroy(adbannerlist_norm_head);
|
| 440 |
list_destroy(adbannerlist_start_head);
|
| 441 |
list_destroy(adbannerlist_init_head);
|
| 442 |
adbannerlist_init_head=adbannerlist_start_head=adbannerlist_norm_head = NULL;
|
| 443 |
return -1;
|
| 444 |
}
|
| 445 |
|
| 446 |
for (line=1; (buff = file_get_line(fp)); line++)
|
| 447 |
{
|
| 448 |
for (pos=0; buff[pos]=='\t' || buff[pos]==' '; pos++);
|
| 449 |
if (buff[pos]=='\0' || buff[pos]=='#')
|
| 450 |
{
|
| 451 |
continue;
|
| 452 |
}
|
| 453 |
if ((temp = strrchr(buff,'#')))
|
| 454 |
{
|
| 455 |
unsigned int endpos;
|
| 456 |
|
| 457 |
*temp = '\0';
|
| 458 |
len = strlen(buff)+1;
|
| 459 |
for (endpos=len-1; buff[endpos]=='\t' || buff[endpos]==' '; endpos--);
|
| 460 |
buff[endpos+1] = '\0';
|
| 461 |
}
|
| 462 |
len = strlen(buff)+1;
|
| 463 |
|
| 464 |
name = xmalloc(len);
|
| 465 |
when = xmalloc(len);
|
| 466 |
link = xmalloc(len);
|
| 467 |
client = xmalloc(len);
|
| 468 |
|
| 469 |
if (sscanf(buff," \"%[^\"]\" %[a-z] %u \"%[^\"]\" %x \"%[^\"]\"",name,when,&delay,link,&next_id,client)!=6)
|
| 470 |
{
|
| 471 |
eventlog(eventlog_level_error,__FUNCTION__,"malformed line %u in file \"%s\"",line,filename);
|
| 472 |
xfree(client);
|
| 473 |
xfree(link);
|
| 474 |
xfree(name);
|
| 475 |
xfree(when);
|
| 476 |
continue;
|
| 477 |
}
|
| 478 |
|
| 479 |
if (strcmp(when,"init")==0)
|
| 480 |
adbannerlist_insert(adbannerlist_init_head,&adbannerlist_init_count,name,delay,link,next_id,client);
|
| 481 |
else if (strcmp(when,"start")==0)
|
| 482 |
adbannerlist_insert(adbannerlist_start_head,&adbannerlist_start_count,name,delay,link,next_id,client);
|
| 483 |
else if (strcmp(when,"norm")==0)
|
| 484 |
adbannerlist_insert(adbannerlist_norm_head,&adbannerlist_norm_count,name,delay,link,next_id,client);
|
| 485 |
else
|
| 486 |
eventlog(eventlog_level_error,__FUNCTION__,"when field has unknown value on line %u in file \"%s\"",line,filename);
|
| 487 |
|
| 488 |
xfree(client);
|
| 489 |
xfree(link);
|
| 490 |
xfree(name);
|
| 491 |
xfree(when);
|
| 492 |
}
|
| 493 |
|
| 494 |
file_get_line(NULL); // clear file_get_line buffer
|
| 495 |
if (fclose(fp)<0)
|
| 496 |
eventlog(eventlog_level_error,__FUNCTION__,"could not close adbanner file \"%s\" after reading (fclose: %s)",filename,pstrerror(errno));
|
| 497 |
return 0;
|
| 498 |
}
|
| 499 |
|
| 500 |
|
| 501 |
extern int adbannerlist_destroy(void)
|
| 502 |
{
|
| 503 |
t_elem * curr;
|
| 504 |
t_adbanner * ad;
|
| 505 |
|
| 506 |
if (adbannerlist_init_head)
|
| 507 |
{
|
| 508 |
LIST_TRAVERSE(adbannerlist_init_head,curr)
|
| 509 |
{
|
| 510 |
if (!(ad = elem_get_data(curr)))
|
| 511 |
eventlog(eventlog_level_error,__FUNCTION__,"found NULL adbanner in init list");
|
| 512 |
else
|
| 513 |
adbanner_destroy(ad);
|
| 514 |
list_remove_elem(adbannerlist_init_head,&curr);
|
| 515 |
}
|
| 516 |
list_destroy(adbannerlist_init_head);
|
| 517 |
adbannerlist_init_head = NULL;
|
| 518 |
adbannerlist_init_count = 0;
|
| 519 |
}
|
| 520 |
|
| 521 |
if (adbannerlist_start_head)
|
| 522 |
{
|
| 523 |
LIST_TRAVERSE(adbannerlist_start_head,curr)
|
| 524 |
{
|
| 525 |
if (!(ad = elem_get_data(curr)))
|
| 526 |
eventlog(eventlog_level_error,__FUNCTION__,"found NULL adbanner in start list");
|
| 527 |
else
|
| 528 |
adbanner_destroy(ad);
|
| 529 |
list_remove_elem(adbannerlist_start_head,&curr);
|
| 530 |
}
|
| 531 |
list_destroy(adbannerlist_start_head);
|
| 532 |
adbannerlist_start_head = NULL;
|
| 533 |
adbannerlist_start_count = 0;
|
| 534 |
}
|
| 535 |
|
| 536 |
if (adbannerlist_norm_head)
|
| 537 |
{
|
| 538 |
LIST_TRAVERSE(adbannerlist_norm_head,curr)
|
| 539 |
{
|
| 540 |
if (!(ad = elem_get_data(curr)))
|
| 541 |
eventlog(eventlog_level_error,__FUNCTION__,"found NULL adbanner in norm list");
|
| 542 |
else
|
| 543 |
adbanner_destroy(ad);
|
| 544 |
list_remove_elem(adbannerlist_norm_head,&curr);
|
| 545 |
}
|
| 546 |
list_destroy(adbannerlist_norm_head);
|
| 547 |
adbannerlist_norm_head = NULL;
|
| 548 |
adbannerlist_norm_count = 0;
|
| 549 |
}
|
| 550 |
|
| 551 |
return 0;
|
| 552 |
}
|
| 553 |
|
| 554 |
|
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