Annotation of src/usr.bin/error/filter.c, Revision 1.3
1.3 ! mickey 1: /* $OpenBSD: filter.c,v 1.2 1996/06/26 05:32:42 deraadt Exp $ */
1.1 deraadt 2: /* $NetBSD: filter.c,v 1.3 1995/09/02 06:15:28 jtc Exp $ */
3:
4: /*
5: * Copyright (c) 1980, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "@(#)filter.c 8.1 (Berkeley) 6/6/93";
40: #endif
1.3 ! mickey 41: static char rcsid[] = "$OpenBSD: filter.c,v 1.2 1996/06/26 05:32:42 deraadt Exp $";
1.1 deraadt 42: #endif /* not lint */
43:
44: #include <sys/types.h>
45: #include <pwd.h>
46: #include <unistd.h>
47: #include <stdio.h>
48: #include <ctype.h>
49: #include <stdlib.h>
50: #include <string.h>
51: #include "error.h"
52: #include "pathnames.h"
53:
54: char *lint_libs[] = {
55: IG_FILE1,
56: IG_FILE2,
57: IG_FILE3,
58: IG_FILE4,
59: 0
60: };
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
1.3 ! mickey 99: warn("Can't open file \"%s\"", filename);
1.1 deraadt 100: #endif
101: return;
102: }
103: /*
104: * Make the first pass through the file, counting lines
105: */
106: for (nignored = 0; fgets(inbuffer, 255, fyle) != NULL; nignored++)
107: continue;
108: names_ignored = (char **)Calloc(nignored+1, sizeof (char *));
109: fclose(fyle);
110: if (freopen(filename, "r", fyle) == NULL){
111: #ifdef FULLDEBUG
1.3 ! mickey 112: warn("Failure to open \"%s\" for second read.", filename);
1.1 deraadt 113: #endif
114: nignored = 0;
115: return;
116: }
117: for (i=0; i < nignored && (fgets (inbuffer, 255, fyle) != NULL); i++){
118: names_ignored[i] = strsave(inbuffer);
119: (void)substitute(names_ignored[i], '\n', '\0');
120: }
121: qsort(names_ignored, nignored, sizeof *names_ignored, lexsort);
122: #ifdef FULLDEBUG
123: printf("Names to ignore follow.\n");
124: for (i=0; i < nignored; i++){
125: printf("\tIgnore: %s\n", names_ignored[i]);
126: }
127: #endif
128: }
129:
130: int lexsort(cpp1, cpp2)
131: char **cpp1, **cpp2;
132: {
133: return(strcmp(*cpp1, *cpp2));
134: }
135:
136: int search_ignore(key)
137: char *key;
138: {
139: reg int ub, lb;
140: reg int halfway;
141: int order;
142:
143: if (nignored == 0)
144: return(-1);
145: for(lb = 0, ub = nignored - 1; ub >= lb; ){
146: halfway = (ub + lb)/2;
147: if ( (order = strcmp(key, names_ignored[halfway])) == 0)
148: return(halfway);
149: if (order < 0) /*key is less than probe, throw away above*/
150: ub = halfway - 1;
151: else
152: lb = halfway + 1;
153: }
154: return(-1);
155: }
156:
157: /*
158: * Tell if the error text is to be ignored.
159: * The error must have been canonicalized, with
160: * the file name the zeroth entry in the errorv,
161: * and the linenumber the second.
162: * Return the new categorization of the error class.
163: */
164: Errorclass discardit(errorp)
165: reg Eptr errorp;
166: {
167: int language;
168: reg int i;
169: Errorclass errorclass = errorp->error_e_class;
170:
171: switch(errorclass){
172: case C_SYNC:
173: case C_NONSPEC:
174: case C_UNKNOWN: return(errorclass);
175: default: ;
176: }
177: if(errorp->error_lgtext < 2){
178: return(C_NONSPEC);
179: }
180: language = errorp->error_language;
181: if(language == INLINT){
182: if (errorclass != C_NONSPEC){ /* no file */
183: for(i=0; lint_libs[i] != 0; i++){
184: if (strcmp(errorp->error_text[0], lint_libs[i]) == 0){
185: return(C_DISCARD);
186: }
187: }
188: }
189: /* check if the argument to the error message is to be ignored*/
190: if (ispunct(lastchar(errorp->error_text[2])))
191: clob_last(errorp->error_text[2], '\0');
192: if (search_ignore(errorp->error_text[errorclass == C_NONSPEC ? 0 : 2]) >= 0){
193: return(C_NULLED);
194: }
195: }
196: return(errorclass);
197: }
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