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hashtab.c
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hashtab.c
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/*
webalizer - a web server log analysis program
Copyright (C) 1997-2013 Bradford L. Barrett
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, and provided that the above
copyright and permission notice is included with all distributed
copies of this or derived software.
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 02111-1307, USA
*/
/*********************************************/
/* STANDARD INCLUDES */
/*********************************************/
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h> /* normal stuff */
#include <ctype.h>
#include <sys/utsname.h>
/* ensure sys/types */
#ifndef _SYS_TYPES_H
#include <sys/types.h>
#endif
/* some need for uint* */
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
/* need socket header? */
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
/* some systems need this */
#ifdef HAVE_MATH_H
#include <math.h>
#endif
#include "webalizer.h" /* main header */
#include "lang.h"
#include "linklist.h"
#include "hashtab.h"
/* internal function prototypes */
HNODEPTR new_hnode(char *,int); /* new host node */
UNODEPTR new_unode(char *,int); /* new url node */
RNODEPTR new_rnode(char *,int); /* new referrer node */
ANODEPTR new_anode(char *,int); /* new user agent node */
SNODEPTR new_snode(char *,int); /* new search string.. */
INODEPTR new_inode(char *,int); /* new ident node */
#ifdef USE_DNS
DNODEPTR new_dnode(char *,int); /* new DNS node */
#endif /* USE_DNS */
void update_entry(char *,int); /* update entry/exit */
void update_exit(char *,int); /* page totals */
unsigned int hash(char *,int len); /* hash function */
/* local data */
HNODEPTR sm_htab[MAXHASH]; /* hash tables */
HNODEPTR sd_htab[MAXHASH];
UNODEPTR um_htab[MAXHASH]; /* for hits, sites, */
RNODEPTR rm_htab[MAXHASH]; /* referrers and agents... */
ANODEPTR am_htab[MAXHASH];
SNODEPTR sr_htab[MAXHASH]; /* search string table */
INODEPTR im_htab[MAXHASH]; /* ident table (username) */
#ifdef USE_DNS
DNODEPTR host_table[MAXHASH]; /* DNS hash table */
#endif /* USE_DNS */
/*********************************************/
/* DEL_HTABS - clear out our hash tables */
/*********************************************/
void del_htabs()
{
del_hlist(sd_htab); /* Clear out our various */
del_ulist(um_htab); /* hash tables here by */
del_hlist(sm_htab); /* calling the appropriate */
del_rlist(rm_htab); /* del_* fuction for each */
del_alist(am_htab);
del_slist(sr_htab);
del_ilist(im_htab);
#ifdef USE_DNS
/* del_dlist(host_table); */ /* delete DNS hash table */
#endif /* USE_DNS */
}
/*********************************************/
/* NEW_HNODE - create host node */
/*********************************************/
HNODEPTR new_hnode(char *str, int len)
{
HNODEPTR newptr;
if (len >= MAXHOST)
{
if (verbose)
{
fprintf(stderr,"[new_hnode] %s (%d)",msg_big_one,len);
if (debug_mode)
fprintf(stderr,":\n--> %s",str);
fprintf(stderr,"\n");
}
str[MAXHOST-1]=0;
len=MAXHOST-1;
}
if (( newptr = malloc(sizeof(struct hnode)+len+1)) != NULL)
{
newptr->string =(char *)(newptr+1);
newptr->slen =len;
newptr->visit =0;
newptr->tstamp =0;
newptr->lasturl =blank_str;
newptr->llen =0;
strcpy(newptr->string,str);
}
return newptr;
}
/*********************************************/
/* PUT_HNODE - insert/update host node */
/*********************************************/
int put_hnode( char *str, /* Hostname */
int len, /* name len */
int type, /* obj type */
u_int64_t count, /* hit count */
u_int64_t file, /* File flag */
double xfer, /* xfer size */
u_int64_t *ctr, /* counter */
u_int64_t visit, /* visits */
u_int64_t tstamp,/* timestamp */
char *lasturl, /* lasturl */
int llen, /* lasturl len */
HNODEPTR *htab) /* ptr>next */
{
HNODEPTR cptr,nptr;
unsigned int hval;
/* check if hashed */
hval=hash(str,len);
if ( (cptr = htab[hval]) == NULL)
{
/* not hashed */
if ( (nptr=new_hnode(str,len)) != NULL)
{
nptr->flag = type;
nptr->count = count;
nptr->files = file;
nptr->xfer = xfer;
nptr->next = NULL;
htab[hval] = nptr;
if (type!=OBJ_GRP) (*ctr)++;
if (visit)
{
nptr->visit=(visit-1);
nptr->llen = llen;
nptr->lasturl=find_url(lasturl, &nptr->llen);
nptr->tstamp=tstamp;
return 0;
}
else
{
if (ispage(log_rec.url,log_rec.urllen))
{
if (htab==sm_htab) update_entry(log_rec.url,log_rec.urllen);
nptr->llen = log_rec.urllen;
nptr->lasturl=find_url(log_rec.url,&nptr->llen);
nptr->tstamp=tstamp;
nptr->visit=1;
}
}
}
}
else
{
while (cptr != NULL)
{
if (cptr->slen == len && strcmp(cptr->string,str)==0)
{
if ((type==cptr->flag)||((type!=OBJ_GRP)&&(cptr->flag!=OBJ_GRP)))
{
/* found... bump counter */
cptr->count+=count;
cptr->files+=file;
cptr->xfer +=xfer;
if (ispage(log_rec.url,log_rec.urllen))
{
if ((tstamp-cptr->tstamp)>=visit_timeout)
{
cptr->visit++;
if (htab==sm_htab)
{
update_exit(cptr->lasturl,cptr->llen);
update_entry(log_rec.url,log_rec.urllen);
}
}
cptr->llen = log_rec.urllen;
cptr->lasturl=find_url(log_rec.url,&cptr->llen);
cptr->tstamp=tstamp;
}
return 0;
}
}
cptr = cptr->next;
}
/* not found... */
if ( (nptr = new_hnode(str,len)) != NULL)
{
nptr->flag = type;
nptr->count = count;
nptr->files = file;
nptr->xfer = xfer;
nptr->next = htab[hval];
htab[hval]=nptr;
if (type!=OBJ_GRP) (*ctr)++;
if (visit)
{
nptr->visit = (visit-1);
nptr->llen = llen;
nptr->lasturl=find_url(lasturl,&nptr->llen);
nptr->tstamp= tstamp;
return 0;
}
else
{
if (ispage(log_rec.url,log_rec.urllen))
{
if (htab==sm_htab) update_entry(log_rec.url,log_rec.urllen);
nptr->llen = log_rec.urllen;
nptr->lasturl=find_url(log_rec.url,&nptr->llen);
nptr->tstamp= tstamp;
nptr->visit=1;
}
}
}
}
if (nptr!=NULL)
{
/* set object type */
if (type==OBJ_GRP) nptr->flag=OBJ_GRP; /* is it a grouping? */
else
{
/* check if it's a hidden object */
if ((hide_sites)||(isinlist(hidden_sites,nptr->string,nptr->slen)!=NULL))
nptr->flag=OBJ_HIDE;
}
}
return nptr==NULL;
}
/*********************************************/
/* DEL_HLIST - delete host hash table */
/*********************************************/
void del_hlist(HNODEPTR *htab)
{
/* free memory used by hash table */
HNODEPTR aptr,temp;
int i;
for (i=0;i<MAXHASH;i++)
{
if (htab[i] != NULL)
{
aptr = htab[i];
while (aptr != NULL)
{
temp = aptr->next;
free (aptr); /* free hostname structure */
aptr = temp;
}
htab[i]=NULL;
}
}
}
/*********************************************/
/* NEW_UNODE - URL node creation */
/*********************************************/
UNODEPTR new_unode(char *str, int len)
{
UNODEPTR newptr;
if (len >= MAXURLH)
{
if (verbose)
{
fprintf(stderr,"[new_unode] %s (%d)",msg_big_one,len);
if (debug_mode)
fprintf(stderr,":\n--> %s",str);
fprintf(stderr,"\n");
}
str[MAXURLH-1]=0;
len=MAXURLH-1;
}
if (( newptr = malloc(sizeof(struct unode)+len+1)) != NULL)
{
newptr->string=(char *)(newptr+1);
newptr->slen = len;
newptr->files = 0;
strcpy(newptr->string,str);
}
return newptr;
}
/*********************************************/
/* PUT_UNODE - insert/update URL node */
/*********************************************/
int put_unode(char *str, int len, int type, u_int64_t count, double xfer,
u_int64_t *ctr, u_int64_t entry, u_int64_t exit, UNODEPTR *htab)
{
UNODEPTR cptr,nptr;
unsigned int hval;
if (str[0]=='-') return 0;
hval = hash(str,len);
/* check if hashed */
if ( (cptr = htab[hval]) == NULL)
{
/* not hashed */
if ( (nptr=new_unode(str,len)) != NULL)
{
nptr->flag = type;
nptr->count= count;
nptr->xfer = xfer;
nptr->next = NULL;
nptr->entry= entry;
nptr->exit = exit;
htab[hval] = nptr;
if (type!=OBJ_GRP) (*ctr)++;
}
}
else
{
/* hashed */
while (cptr != NULL)
{
if (cptr->slen == len && strcmp(cptr->string,str)==0)
{
if ((type==cptr->flag)||((type!=OBJ_GRP)&&(cptr->flag!=OBJ_GRP)))
{
/* found... bump counter */
cptr->count+=count;
cptr->xfer += xfer;
return 0;
}
}
cptr = cptr->next;
}
/* not found... */
if ( (nptr = new_unode(str,len)) != NULL)
{
nptr->flag = type;
nptr->count= count;
nptr->xfer = xfer;
nptr->next = htab[hval];
nptr->entry= entry;
nptr->exit = exit;
htab[hval] = nptr;
if (type!=OBJ_GRP) (*ctr)++;
}
}
if (nptr!=NULL)
{
if (type==OBJ_GRP) nptr->flag=OBJ_GRP;
else if (isinlist(hidden_urls,nptr->string,nptr->slen)!=NULL)
nptr->flag=OBJ_HIDE;
}
return nptr==NULL;
}
/*********************************************/
/* DEL_ULIST - delete URL hash table */
/*********************************************/
void del_ulist(UNODEPTR *htab)
{
/* free memory used by hash table */
UNODEPTR aptr,temp;
int i;
for (i=0;i<MAXHASH;i++)
{
if (htab[i] != NULL)
{
aptr = htab[i];
while (aptr != NULL)
{
temp = aptr->next;
free (aptr); /* free up URL struct node */
aptr = temp;
}
htab[i]=NULL;
}
}
}
/*********************************************/
/* NEW_RNODE - Referrer node creation */
/*********************************************/
RNODEPTR new_rnode(char *str,int len)
{
RNODEPTR newptr;
if (len >= MAXREFH)
{
if (verbose)
{
fprintf(stderr,"[new_rnode] %s (%d)",msg_big_one,len);
if (debug_mode)
fprintf(stderr,":\n--> %s",str);
fprintf(stderr,"\n");
}
str[MAXREFH-1]=0;
len=MAXREFH-1;
}
if (( newptr = malloc(sizeof(struct rnode)+len+1)) != NULL)
{
newptr->string= (char *)(newptr+1);;
newptr->slen = len;
newptr->count = 1;
newptr->flag = OBJ_REG;
strcpy(newptr->string,str);
}
return newptr;
}
/*********************************************/
/* PUT_RNODE - insert/update referrer node */
/*********************************************/
int put_rnode(char *str, int len, int type, u_int64_t count,
u_int64_t *ctr, RNODEPTR *htab)
{
RNODEPTR cptr,nptr;
unsigned int hval;
if (str[0]=='-') {
strcpy(str,"- (Direct Request)");
len=sizeof("- (Direct Request)")-1;
}
hval = hash(str,len);
/* check if hashed */
if ( (cptr = htab[hval]) == NULL)
{
/* not hashed */
if ( (nptr=new_rnode(str,len)) != NULL)
{
nptr->flag = type;
nptr->count = count;
nptr->next = NULL;
htab[hval] = nptr;
if (type!=OBJ_GRP) (*ctr)++;
}
}
else
{
while (cptr != NULL)
{
if (cptr->slen == len && strcmp(cptr->string,str)==0)
{
if ((type==cptr->flag)||((type!=OBJ_GRP)&&(cptr->flag!=OBJ_GRP)))
{
/* found... bump counter */
cptr->count+=count;
return 0;
}
}
cptr = cptr->next;
}
/* not found... */
if ( (nptr = new_rnode(str,len)) != NULL)
{
nptr->flag = type;
nptr->count = count;
nptr->next = htab[hval];
htab[hval] = nptr;
if (type!=OBJ_GRP) (*ctr)++;
}
}
if (nptr!=NULL)
{
if (type==OBJ_GRP) nptr->flag=OBJ_GRP;
else if (isinlist(hidden_refs,nptr->string,nptr->slen)!=NULL)
nptr->flag=OBJ_HIDE;
}
return nptr==NULL;
}
/*********************************************/
/* DEL_RLIST - delete referrer hash table */
/*********************************************/
void del_rlist(RNODEPTR *htab)
{
/* free memory used by hash table */
RNODEPTR aptr,temp;
int i;
for (i=0;i<MAXHASH;i++)
{
if (htab[i] != NULL)
{
aptr = htab[i];
while (aptr != NULL)
{
temp = aptr->next;
free (aptr);
aptr = temp;
}
htab[i]=NULL;
}
}
}
/*********************************************/
/* NEW_ANODE - User Agent node creation */
/*********************************************/
ANODEPTR new_anode(char *str,int len)
{
ANODEPTR newptr;
if (len >= MAXAGENT)
{
if (verbose)
{
fprintf(stderr,"[new_anode] %s (%d)",msg_big_one,len);
if (debug_mode)
fprintf(stderr,":\n--> %s",str);
fprintf(stderr,"\n");
}
str[MAXAGENT-1]=0;
len=MAXAGENT-1;
}
if (( newptr = malloc(sizeof(struct anode)+len+1)) != NULL)
{
newptr->string= (char *)(newptr+1);;
newptr->slen = len;
newptr->count = 1;
newptr->flag = OBJ_REG;
strcpy(newptr->string,str);
}
return newptr;
}
/*********************************************/
/* PUT_ANODE - insert/update user agent node */
/*********************************************/
int put_anode(char *str, int len, int type, u_int64_t count,
u_int64_t *ctr, ANODEPTR *htab)
{
ANODEPTR cptr,nptr;
unsigned int hval;
if (str[0]=='-') return 0; /* skip bad user agents */
hval = hash(str,len);
/* check if hashed */
if ( (cptr = htab[hval]) == NULL)
{
/* not hashed */
if ( (nptr=new_anode(str,len)) != NULL)
{
nptr->flag = type;
nptr->count= count;
nptr->next = NULL;
htab[hval] = nptr;
if (type!=OBJ_GRP) (*ctr)++;
}
}
else
{
/* hashed */
while (cptr != NULL)
{
if (cptr->slen == len && strcmp(cptr->string,str)==0)
{
if ((type==cptr->flag)||((type!=OBJ_GRP)&&(cptr->flag!=OBJ_GRP)))
{
/* found... bump counter */
cptr->count+=count;
return 0;
}
}
cptr = cptr->next;
}
/* not found... */
if ( (nptr = new_anode(str,len)) != NULL)
{
nptr->flag = type;
nptr->count = count;
nptr->next = htab[hval];
htab[hval] = nptr;
if (type!=OBJ_GRP) (*ctr)++;
}
}
if (type==OBJ_GRP) nptr->flag=OBJ_GRP;
else if (isinlist(hidden_agents,nptr->string,nptr->slen)!=NULL)
nptr->flag=OBJ_HIDE;
return nptr==NULL;
}
/*********************************************/
/* DEL_ALIST - delete user agent hash table */
/*********************************************/
void del_alist(ANODEPTR *htab)
{
/* free memory used by hash table */
ANODEPTR aptr,temp;
int i;
for (i=0;i<MAXHASH;i++)
{
if (htab[i] != NULL)
{
aptr = htab[i];
while (aptr != NULL)
{
temp = aptr->next;
free (aptr);
aptr = temp;
}
htab[i]=NULL;
}
}
}
/*********************************************/
/* NEW_SNODE - Search str node creation */
/*********************************************/
SNODEPTR new_snode(char *str,int len)
{
SNODEPTR newptr;
if (len >= MAXSRCHH)
{
if (verbose)
{
fprintf(stderr,"[new_snode] %s (%d)",msg_big_one,len);
if (debug_mode)
fprintf(stderr,":\n--> %s",str);
fprintf(stderr,"\n");
}
str[MAXSRCHH-1]=0;
len=MAXSRCHH-1;
}
if (( newptr = malloc(sizeof(struct snode)+len+1)) != NULL)
{
newptr->string= (char *)(newptr+1);;
newptr->slen = len;
newptr->count = 1;
strcpy(newptr->string,str);
}
return newptr;
}
/*********************************************/
/* PUT_SNODE - insert/update search str node */
/*********************************************/
int put_snode(char *str, int len, u_int64_t count, SNODEPTR *htab)
{
SNODEPTR cptr,nptr;
unsigned int hval;
if (str[0]==0 || str[0]==' ') return 0; /* skip bad search strs */
hval=hash(str,len);
/* check if hashed */
if ( (cptr = htab[hval]) == NULL)
{
/* not hashed */
if ( (nptr=new_snode(str,len)) != NULL)
{
nptr->count = count;
nptr->next = NULL;
htab[hval] = nptr;
}
}
else
{
/* hashed */
while (cptr != NULL)
{
if (cptr->slen==len && strcmp(cptr->string,str)==0)
{
/* found... bump counter */
cptr->count+=count;
return 0;
}
cptr = cptr->next;
}
/* not found... */
if ( (nptr = new_snode(str,len)) != NULL)
{
nptr->count = count;
nptr->next = htab[hval];
htab[hval] = nptr;
}
}
return nptr==NULL;
}
/*********************************************/
/* DEL_SLIST - delete search str hash table */
/*********************************************/
void del_slist(SNODEPTR *htab)
{
/* free memory used by hash table */
SNODEPTR aptr,temp;
int i;
for (i=0;i<MAXHASH;i++)
{
if (htab[i] != NULL)
{
aptr = htab[i];
while (aptr != NULL)
{
temp = aptr->next;
free (aptr);
aptr = temp;
}
htab[i]=NULL;
}
}
}
/*********************************************/
/* NEW_INODE - create ident (username) node */
/*********************************************/
INODEPTR new_inode(char *str,int len)
{
INODEPTR newptr;
if (len >= MAXIDENT)
{
if (verbose)
{
fprintf(stderr,"[new_inode] %s (%d)",msg_big_one,len);
if (debug_mode)
fprintf(stderr,":\n--> %s",str);
fprintf(stderr,"\n");
}
str[MAXIDENT-1]=0;
len=MAXIDENT-1;
}
if (( newptr = malloc(sizeof(struct inode)+len+1)) != NULL)
{
newptr->string =(char *)(newptr+1);;
newptr->slen =len;
newptr->visit =1;
newptr->tstamp =0;
strcpy(newptr->string,str);
}
return newptr;
}
/*********************************************/
/* PUT_INODE - insert/update ident node */
/*********************************************/
int put_inode( char *str, /* ident str */
int len, /* str len */
int type, /* obj type */
u_int64_t count, /* hit count */
u_int64_t file, /* File flag */
double xfer, /* xfer size */
u_int64_t *ctr, /* counter */
u_int64_t visit, /* visits */
u_int64_t tstamp,/* timestamp */
INODEPTR *htab) /* hashtable */
{
INODEPTR cptr,nptr;
unsigned int hval;
if ((str[0]=='-') || (str[0]==0)) return 0; /* skip if no username */
hval = hash(str,len);
/* check if hashed */
if ( (cptr = htab[hval]) == NULL)
{
/* not hashed */
if ( (nptr=new_inode(str,len)) != NULL)
{
nptr->flag = type;
nptr->count = count;
nptr->files = file;
nptr->xfer = xfer;
nptr->next = NULL;
htab[hval] = nptr;
if (type!=OBJ_GRP) (*ctr)++;
if (visit)
{
nptr->visit=(visit-1);
nptr->tstamp=tstamp;
return 0;
}
else
{
if (ispage(log_rec.url,log_rec.urllen)) nptr->tstamp=tstamp;
}
}
}
else
{
/* hashed */
while (cptr != NULL)
{
if (cptr->slen==len && strcmp(cptr->string,str)==0)
{
if ((type==cptr->flag)||((type!=OBJ_GRP)&&(cptr->flag!=OBJ_GRP)))
{
/* found... bump counter */
cptr->count+=count;
cptr->files+=file;
cptr->xfer +=xfer;
if (ispage(log_rec.url,log_rec.urllen))
{
if ((tstamp-cptr->tstamp)>=visit_timeout)
cptr->visit++;
cptr->tstamp=tstamp;
}
return 0;
}
}
cptr = cptr->next;
}
/* not found... */
if ( (nptr = new_inode(str,len)) != NULL)
{
nptr->flag = type;
nptr->count = count;
nptr->files = file;
nptr->xfer = xfer;
nptr->next = htab[hval];
htab[hval] = nptr;
if (type!=OBJ_GRP) (*ctr)++;
if (visit)
{
nptr->visit = (visit-1);
nptr->tstamp= tstamp;
return 0;
}
else
{
if (ispage(log_rec.url,log_rec.urllen)) nptr->tstamp= tstamp;
}
}
}
if (nptr!=NULL)
{
/* set object type */
if (type==OBJ_GRP) nptr->flag=OBJ_GRP; /* is it a grouping? */
else
{
/* check if it's a hidden object */
if (isinlist(hidden_users,nptr->string,nptr->slen)!=NULL)
nptr->flag=OBJ_HIDE;
}
}
return nptr==NULL;
}
/*********************************************/
/* DEL_ILIST - delete ident hash table */
/*********************************************/
void del_ilist(INODEPTR *htab)
{
/* free memory used by hash table */
INODEPTR aptr,temp;
int i;
for (i=0;i<MAXHASH;i++)
{
if (htab[i] != NULL)
{
aptr = htab[i];
while (aptr != NULL)
{
temp = aptr->next;
free (aptr); /* free ident structure */
aptr = temp;
}
htab[i]=NULL;
}
}
}
#ifdef USE_DNS /* only add these for DNS */
/*********************************************/
/* NEW_DNODE - DNS resolver node creation */
/*********************************************/
DNODEPTR new_dnode(char *str,int len)
{
DNODEPTR newptr;
if (len >= MAXHOST)
{
if (verbose)
{
fprintf(stderr,"[new_dnode] %s (%d)",msg_big_one,len);
if (debug_mode)
fprintf(stderr,":\n--> %s",str);
fprintf(stderr,"\n");
}
str[MAXHOST-1]=0;
len=MAXHOST-1;
}
if (( newptr = malloc(sizeof(struct dnode)+len+1)) != NULL)
{
newptr->string= (char *)(newptr+1);;
newptr->slen= len;
strcpy(newptr->string,str);
}
return newptr;
}
/*********************************************/
/* PUT_DNODE - insert/update dns host node */
/*********************************************/
int put_dnode(char *str, int slen, void *addr, int len, DNODEPTR *htab)
{
DNODEPTR cptr,nptr;
unsigned int hval;
if (str[0]==0 || str[0]==' ') return 0; /* skip bad hostnames */
hval = hash(str,slen);
/* check if hashed */
if ( (cptr = htab[hval]) == NULL)
{
/* not hashed */
if ( (nptr=new_dnode(str,slen)) != NULL)
{
if (addr) memcpy(&nptr->addr, addr, len);
else memset(&nptr->addr, 0, sizeof(struct sockaddr_storage));
nptr->addrlen = len;
nptr->next = NULL;
htab[hval] = nptr;
}
}
else
{
/* hashed */
while (cptr != NULL)
{