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/*
* Copyright (c) 1998 Sendmail, Inc. All rights reserved.
* Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the sendmail distribution.
*
*/
#ifndef lint
static char sccsid[] = "@(#)stab.c 8.19 (Berkeley) 5/19/1998";
#endif /* not lint */
# include "sendmail.h"
/*
** STAB -- manage the symbol table
**
** Parameters:
** name -- the name to be looked up or inserted.
** type -- the type of symbol.
** op -- what to do:
** ST_ENTER -- enter the name if not
** already present.
** ST_FIND -- find it only.
**
** Returns:
** pointer to a STAB entry for this name.
** NULL if not found and not entered.
**
** Side Effects:
** can update the symbol table.
*/
# define STABSIZE 2003
static STAB *SymTab[STABSIZE];
STAB *
stab(name, type, op)
char *name;
int type;
int op;
{
register STAB *s;
register STAB **ps;
register int hfunc;
register char *p;
int len;
extern char lower __P((char));
if (tTd(36, 5))
printf("STAB: %s %d ", name, type);
/*
** Compute the hashing function
*/
hfunc = type;
for (p = name; *p != '\0'; p++)
hfunc = ((hfunc << 1) ^ (lower(*p) & 0377)) % STABSIZE;
if (tTd(36, 9))
printf("(hfunc=%d) ", hfunc);
ps = &SymTab[hfunc];
if (type == ST_MACRO || type == ST_RULESET)
{
while ((s = *ps) != NULL &&
(s->s_type != type || strcmp(name, s->s_name)))
ps = &s->s_next;
}
else
{
while ((s = *ps) != NULL &&
(s->s_type != type || strcasecmp(name, s->s_name)))
ps = &s->s_next;
}
/*
** Dispose of the entry.
*/
if (s != NULL || op == ST_FIND)
{
if (tTd(36, 5))
{
if (s == NULL)
printf("not found\n");
else
{
long *lp = (long *) s->s_class;
printf("type %d val %lx %lx %lx %lx\n",
s->s_type, lp[0], lp[1], lp[2], lp[3]);
}
}
return (s);
}
/*
** Make a new entry and link it in.
*/
if (tTd(36, 5))
printf("entered\n");
/* determine size of new entry */
#if _FFR_MEMORY_MISER
switch (type)
{
case ST_CLASS:
len = sizeof s->s_class;
break;
case ST_ADDRESS:
len = sizeof s->s_address;
break;
case ST_MAILER:
len = sizeof s->s_mailer;
case ST_ALIAS:
len = sizeof s->s_alias;
break;
case ST_MAPCLASS:
len = sizeof s->s_mapclass;
break;
case ST_MAP:
len = sizeof s->s_map;
break;
case ST_HOSTSIG:
len = sizeof s->s_hostsig;
break;
case ST_NAMECANON:
len = sizeof s->s_namecanon;
break;
case ST_MACRO:
len = sizeof s->s_macro;
break;
case ST_RULESET:
len = sizeof s->s_ruleset;
break;
case ST_SERVICE:
len = sizeof s->s_service;
break;
case ST_HEADER:
len = sizeof s->s_header;
break;
default:
if (type >= ST_MCI)
len = sizeof s->s_mci;
else
{
syserr("stab: unknown symbol type %d", type);
len = sizeof s->s_value;
}
break;
}
len += sizeof *s - sizeof s->s_value;
#else
len = sizeof *s;
#endif
/* make new entry */
s = (STAB *) xalloc(len);
bzero((char *) s, len);
s->s_name = newstr(name);
s->s_type = type;
s->s_len = len;
/* link it in */
*ps = s;
return (s);
}
/*
** STABAPPLY -- apply function to all stab entries
**
** Parameters:
** func -- the function to apply. It will be given one
** parameter (the stab entry).
** arg -- an arbitrary argument, passed to func.
**
** Returns:
** none.
*/
void
stabapply(func, arg)
void (*func)__P((STAB *, int));
int arg;
{
register STAB **shead;
register STAB *s;
for (shead = SymTab; shead < &SymTab[STABSIZE]; shead++)
{
for (s = *shead; s != NULL; s = s->s_next)
{
if (tTd(36, 90))
printf("stabapply: trying %d/%s\n",
s->s_type, s->s_name);
func(s, arg);
}
}
}
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