1 /* 2 * Copyright (c) 1980 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 /*static char sccsid[] = "from: @(#)filter.c 5.7 (Berkeley) 2/26/91";*/ 36 static char rcsid[] = "$Id: filter.c,v 1.2 1993/08/01 18:16:45 mycroft Exp $"; 37 #endif /* not lint */ 38 39 #include <sys/types.h> 40 #include <pwd.h> 41 #include <unistd.h> 42 #include <stdio.h> 43 #include <ctype.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include "error.h" 47 #include "pathnames.h" 48 49 char *lint_libs[] = { 50 IG_FILE1, 51 IG_FILE2, 52 IG_FILE3, 53 IG_FILE4, 54 0 55 }; 56 extern char* processname; 57 int lexsort(); 58 /* 59 * Read the file ERRORNAME of the names of functions in lint 60 * to ignore complaints about. 61 */ 62 getignored(auxname) 63 char *auxname; 64 { 65 reg int i; 66 FILE *fyle; 67 char inbuffer[256]; 68 int uid; 69 char filename[128]; 70 char *username; 71 struct passwd *passwdentry; 72 73 nignored = 0; 74 if (auxname == 0){ /* use the default */ 75 if ( (username = (char *)getlogin()) == NULL){ 76 username = "Unknown"; 77 uid = getuid(); 78 if ( (passwdentry = (struct passwd *)getpwuid(uid)) == NULL){ 79 return; 80 } 81 } else { 82 if ( (passwdentry = (struct passwd *)getpwnam(username)) == NULL) 83 return; 84 } 85 strcpy(filename, passwdentry->pw_dir); 86 (void)strcat(filename, ERRORNAME); 87 } else 88 (void)strcpy(filename, auxname); 89 #ifdef FULLDEBUG 90 printf("Opening file \"%s\" to read names to ignore.\n", 91 filename); 92 #endif 93 if ( (fyle = fopen(filename, "r")) == NULL){ 94 #ifdef FULLDEBUG 95 fprintf(stderr, "%s: Can't open file \"%s\"\n", 96 processname, filename); 97 #endif 98 return; 99 } 100 /* 101 * Make the first pass through the file, counting lines 102 */ 103 for (nignored = 0; fgets(inbuffer, 255, fyle) != NULL; nignored++) 104 continue; 105 names_ignored = (char **)Calloc(nignored+1, sizeof (char *)); 106 fclose(fyle); 107 if (freopen(filename, "r", fyle) == NULL){ 108 #ifdef FULLDEBUG 109 fprintf(stderr, "%s: Failure to open \"%s\" for second read.\n", 110 processname, filename); 111 #endif 112 nignored = 0; 113 return; 114 } 115 for (i=0; i < nignored && (fgets (inbuffer, 255, fyle) != NULL); i++){ 116 names_ignored[i] = strsave(inbuffer); 117 (void)substitute(names_ignored[i], '\n', '\0'); 118 } 119 qsort(names_ignored, nignored, sizeof *names_ignored, lexsort); 120 #ifdef FULLDEBUG 121 printf("Names to ignore follow.\n"); 122 for (i=0; i < nignored; i++){ 123 printf("\tIgnore: %s\n", names_ignored[i]); 124 } 125 #endif 126 } 127 128 int lexsort(cpp1, cpp2) 129 char **cpp1, **cpp2; 130 { 131 return(strcmp(*cpp1, *cpp2)); 132 } 133 134 int search_ignore(key) 135 char *key; 136 { 137 reg int ub, lb; 138 reg int halfway; 139 int order; 140 141 if (nignored == 0) 142 return(-1); 143 for(lb = 0, ub = nignored - 1; ub >= lb; ){ 144 halfway = (ub + lb)/2; 145 if ( (order = strcmp(key, names_ignored[halfway])) == 0) 146 return(halfway); 147 if (order < 0) /*key is less than probe, throw away above*/ 148 ub = halfway - 1; 149 else 150 lb = halfway + 1; 151 } 152 return(-1); 153 } 154 155 /* 156 * Tell if the error text is to be ignored. 157 * The error must have been canonicalized, with 158 * the file name the zeroth entry in the errorv, 159 * and the linenumber the second. 160 * Return the new categorization of the error class. 161 */ 162 Errorclass discardit(errorp) 163 reg Eptr errorp; 164 { 165 int language; 166 reg int i; 167 Errorclass errorclass = errorp->error_e_class; 168 169 switch(errorclass){ 170 case C_SYNC: 171 case C_NONSPEC: 172 case C_UNKNOWN: return(errorclass); 173 default: ; 174 } 175 if(errorp->error_lgtext < 2){ 176 return(C_NONSPEC); 177 } 178 language = errorp->error_language; 179 if(language == INLINT){ 180 if (errorclass != C_NONSPEC){ /* no file */ 181 for(i=0; lint_libs[i] != 0; i++){ 182 if (strcmp(errorp->error_text[0], lint_libs[i]) == 0){ 183 return(C_DISCARD); 184 } 185 } 186 } 187 /* check if the argument to the error message is to be ignored*/ 188 if (ispunct(lastchar(errorp->error_text[2]))) 189 clob_last(errorp->error_text[2], '\0'); 190 if (search_ignore(errorp->error_text[errorclass == C_NONSPEC ? 0 : 2]) >= 0){ 191 return(C_NULLED); 192 } 193 } 194 return(errorclass); 195 } 196