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/* $OpenBSD: filter.c,v 1.5 1999/12/04 00:16:52 deraadt Exp $ */
/* $NetBSD: filter.c,v 1.3 1995/09/02 06:15:28 jtc Exp $ */
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)filter.c 8.1 (Berkeley) 6/6/93";
#endif
static char rcsid[] = "$OpenBSD: filter.c,v 1.5 1999/12/04 00:16:52 deraadt Exp $";
#endif /* not lint */
#include <sys/param.h>
#include <pwd.h>
#include <unistd.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include "error.h"
#include "pathnames.h"
char *lint_libs[] = {
IG_FILE1,
IG_FILE2,
IG_FILE3,
IG_FILE4,
0
};
int lexsort();
/*
* Read the file ERRORNAME of the names of functions in lint
* to ignore complaints about.
*/
getignored(auxname)
char *auxname;
{
reg int i;
FILE *fyle;
char inbuffer[256];
uid_t uid;
char filename[MAXPATHLEN];
char *username;
struct passwd *passwdentry;
nignored = 0;
if (auxname == 0){ /* use the default */
if ( (username = (char *)getlogin()) == NULL){
username = "Unknown";
uid = getuid();
if ( (passwdentry = (struct passwd *)getpwuid(uid)) == NULL){
return;
}
} else {
if ( (passwdentry = (struct passwd *)getpwnam(username)) == NULL)
return;
}
strlcpy(filename, passwdentry->pw_dir, sizeof(filename));
(void)strlcat(filename, ERRORNAME, sizeof(filename));
} else
(void)strlcpy(filename, auxname, sizeof filename);
#ifdef FULLDEBUG
printf("Opening file \"%s\" to read names to ignore.\n",
filename);
#endif
if ( (fyle = fopen(filename, "r")) == NULL){
#ifdef FULLDEBUG
warn("Can't open file \"%s\"", filename);
#endif
return;
}
/*
* Make the first pass through the file, counting lines
*/
for (nignored = 0;
fgets(inbuffer, sizeof(inbuffer)-1, fyle) != NULL; nignored++)
continue;
names_ignored = (char **)Calloc(nignored+1, sizeof (char *));
fclose(fyle);
if (freopen(filename, "r", fyle) == NULL){
#ifdef FULLDEBUG
warn("Failure to open \"%s\" for second read.", filename);
#endif
nignored = 0;
return;
}
for (i=0; i < nignored &&
(fgets (inbuffer, sizeof(inbuffer)-1, fyle) != NULL); i++){
names_ignored[i] = strsave(inbuffer);
(void)substitute(names_ignored[i], '\n', '\0');
}
qsort(names_ignored, nignored, sizeof *names_ignored, lexsort);
#ifdef FULLDEBUG
printf("Names to ignore follow.\n");
for (i=0; i < nignored; i++){
printf("\tIgnore: %s\n", names_ignored[i]);
}
#endif
}
int lexsort(cpp1, cpp2)
char **cpp1, **cpp2;
{
return(strcmp(*cpp1, *cpp2));
}
int search_ignore(key)
char *key;
{
reg int ub, lb;
reg int halfway;
int order;
if (nignored == 0)
return(-1);
for(lb = 0, ub = nignored - 1; ub >= lb; ){
halfway = (ub + lb)/2;
if ( (order = strcmp(key, names_ignored[halfway])) == 0)
return(halfway);
if (order < 0) /*key is less than probe, throw away above*/
ub = halfway - 1;
else
lb = halfway + 1;
}
return(-1);
}
/*
* Tell if the error text is to be ignored.
* The error must have been canonicalized, with
* the file name the zeroth entry in the errorv,
* and the linenumber the second.
* Return the new categorization of the error class.
*/
Errorclass discardit(errorp)
reg Eptr errorp;
{
int language;
reg int i;
Errorclass errorclass = errorp->error_e_class;
switch(errorclass){
case C_SYNC:
case C_NONSPEC:
case C_UNKNOWN: return(errorclass);
default: ;
}
if(errorp->error_lgtext < 2){
return(C_NONSPEC);
}
language = errorp->error_language;
if(language == INLINT){
if (errorclass != C_NONSPEC){ /* no file */
for(i=0; lint_libs[i] != 0; i++){
if (strcmp(errorp->error_text[0], lint_libs[i]) == 0){
return(C_DISCARD);
}
}
}
/* check if the argument to the error message is to be ignored*/
if (ispunct(lastchar(errorp->error_text[2])))
clob_last(errorp->error_text[2], '\0');
if (search_ignore(errorp->error_text[errorclass == C_NONSPEC ? 0 : 2]) >= 0){
return(C_NULLED);
}
}
return(errorclass);
}
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