Annotation of src/usr.bin/error/filter.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: filter.c,v 1.3 1995/09/02 06:15:28 jtc Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1980, 1993
! 5: * The Regents of the University of California. All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed by the University of
! 18: * California, Berkeley and its contributors.
! 19: * 4. Neither the name of the University nor the names of its contributors
! 20: * may be used to endorse or promote products derived from this software
! 21: * without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: */
! 35:
! 36: #ifndef lint
! 37: #if 0
! 38: static char sccsid[] = "@(#)filter.c 8.1 (Berkeley) 6/6/93";
! 39: #endif
! 40: static char rcsid[] = "$NetBSD: filter.c,v 1.3 1995/09/02 06:15:28 jtc Exp $";
! 41: #endif /* not lint */
! 42:
! 43: #include <sys/types.h>
! 44: #include <pwd.h>
! 45: #include <unistd.h>
! 46: #include <stdio.h>
! 47: #include <ctype.h>
! 48: #include <stdlib.h>
! 49: #include <string.h>
! 50: #include "error.h"
! 51: #include "pathnames.h"
! 52:
! 53: char *lint_libs[] = {
! 54: IG_FILE1,
! 55: IG_FILE2,
! 56: IG_FILE3,
! 57: IG_FILE4,
! 58: 0
! 59: };
! 60: extern char* processname;
! 61: int lexsort();
! 62: /*
! 63: * Read the file ERRORNAME of the names of functions in lint
! 64: * to ignore complaints about.
! 65: */
! 66: getignored(auxname)
! 67: char *auxname;
! 68: {
! 69: reg int i;
! 70: FILE *fyle;
! 71: char inbuffer[256];
! 72: int uid;
! 73: char filename[128];
! 74: char *username;
! 75: struct passwd *passwdentry;
! 76:
! 77: nignored = 0;
! 78: if (auxname == 0){ /* use the default */
! 79: if ( (username = (char *)getlogin()) == NULL){
! 80: username = "Unknown";
! 81: uid = getuid();
! 82: if ( (passwdentry = (struct passwd *)getpwuid(uid)) == NULL){
! 83: return;
! 84: }
! 85: } else {
! 86: if ( (passwdentry = (struct passwd *)getpwnam(username)) == NULL)
! 87: return;
! 88: }
! 89: strcpy(filename, passwdentry->pw_dir);
! 90: (void)strcat(filename, ERRORNAME);
! 91: } else
! 92: (void)strcpy(filename, auxname);
! 93: #ifdef FULLDEBUG
! 94: printf("Opening file \"%s\" to read names to ignore.\n",
! 95: filename);
! 96: #endif
! 97: if ( (fyle = fopen(filename, "r")) == NULL){
! 98: #ifdef FULLDEBUG
! 99: fprintf(stderr, "%s: Can't open file \"%s\"\n",
! 100: processname, filename);
! 101: #endif
! 102: return;
! 103: }
! 104: /*
! 105: * Make the first pass through the file, counting lines
! 106: */
! 107: for (nignored = 0; fgets(inbuffer, 255, fyle) != NULL; nignored++)
! 108: continue;
! 109: names_ignored = (char **)Calloc(nignored+1, sizeof (char *));
! 110: fclose(fyle);
! 111: if (freopen(filename, "r", fyle) == NULL){
! 112: #ifdef FULLDEBUG
! 113: fprintf(stderr, "%s: Failure to open \"%s\" for second read.\n",
! 114: processname, filename);
! 115: #endif
! 116: nignored = 0;
! 117: return;
! 118: }
! 119: for (i=0; i < nignored && (fgets (inbuffer, 255, fyle) != NULL); i++){
! 120: names_ignored[i] = strsave(inbuffer);
! 121: (void)substitute(names_ignored[i], '\n', '\0');
! 122: }
! 123: qsort(names_ignored, nignored, sizeof *names_ignored, lexsort);
! 124: #ifdef FULLDEBUG
! 125: printf("Names to ignore follow.\n");
! 126: for (i=0; i < nignored; i++){
! 127: printf("\tIgnore: %s\n", names_ignored[i]);
! 128: }
! 129: #endif
! 130: }
! 131:
! 132: int lexsort(cpp1, cpp2)
! 133: char **cpp1, **cpp2;
! 134: {
! 135: return(strcmp(*cpp1, *cpp2));
! 136: }
! 137:
! 138: int search_ignore(key)
! 139: char *key;
! 140: {
! 141: reg int ub, lb;
! 142: reg int halfway;
! 143: int order;
! 144:
! 145: if (nignored == 0)
! 146: return(-1);
! 147: for(lb = 0, ub = nignored - 1; ub >= lb; ){
! 148: halfway = (ub + lb)/2;
! 149: if ( (order = strcmp(key, names_ignored[halfway])) == 0)
! 150: return(halfway);
! 151: if (order < 0) /*key is less than probe, throw away above*/
! 152: ub = halfway - 1;
! 153: else
! 154: lb = halfway + 1;
! 155: }
! 156: return(-1);
! 157: }
! 158:
! 159: /*
! 160: * Tell if the error text is to be ignored.
! 161: * The error must have been canonicalized, with
! 162: * the file name the zeroth entry in the errorv,
! 163: * and the linenumber the second.
! 164: * Return the new categorization of the error class.
! 165: */
! 166: Errorclass discardit(errorp)
! 167: reg Eptr errorp;
! 168: {
! 169: int language;
! 170: reg int i;
! 171: Errorclass errorclass = errorp->error_e_class;
! 172:
! 173: switch(errorclass){
! 174: case C_SYNC:
! 175: case C_NONSPEC:
! 176: case C_UNKNOWN: return(errorclass);
! 177: default: ;
! 178: }
! 179: if(errorp->error_lgtext < 2){
! 180: return(C_NONSPEC);
! 181: }
! 182: language = errorp->error_language;
! 183: if(language == INLINT){
! 184: if (errorclass != C_NONSPEC){ /* no file */
! 185: for(i=0; lint_libs[i] != 0; i++){
! 186: if (strcmp(errorp->error_text[0], lint_libs[i]) == 0){
! 187: return(C_DISCARD);
! 188: }
! 189: }
! 190: }
! 191: /* check if the argument to the error message is to be ignored*/
! 192: if (ispunct(lastchar(errorp->error_text[2])))
! 193: clob_last(errorp->error_text[2], '\0');
! 194: if (search_ignore(errorp->error_text[errorclass == C_NONSPEC ? 0 : 2]) >= 0){
! 195: return(C_NULLED);
! 196: }
! 197: }
! 198: return(errorclass);
! 199: }
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