1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*
integrit - file integrity verification system
Copyright (C) 2000, 2001 Ed L. Cashin
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <errno.h>
#include "checkset.h"
#include "rules.h"
#include "elcerror.h"
#include "elcerror_p.h"
#include "checkset_p.h"
#ifdef ELC_FIND_LEAKS
#include "leakfind.h"
#endif
void checkset_init(checkset *c)
{
c->flags = 0;
c->switches = NULL;
}
void ni_checkset_init(ni_checkset *nic)
{
nic->regular.flags = 0;
nic->regular.switches = NULL;
nic->ni_switches = NULL;
}
inline static void
checkset_warn_overwrite(checkset *old, const char *filename)
{
fprintf(stderr, "Warning: overwriting old checkset (");
checkset_show(stderr, old);
fprintf(stderr, ") for file (%s)\n", filename);
}
/* We must free and overwrite the old checkset for the simple case,
* where both checksets are regular, cascading checksets.
*
* If the new one is non-inheriting and the old one is regular, we
* take the cascading stuff from the old one and add it to the new one.
*
* If the new one is regular and the old one is non-inheriting, we override
* the regular part of the old one and free the new one, returning the
* updated old one.
*
* If both are non-inheriting, we free and overwrite the old checkset,
* returning the new one. We keep the cascading part of the old checkset
* if the new one doesn't have one.
*/
checkset *checkset_merge(checkset *new, checkset *old,
const char *filename)
{
char new_is_ni = new->flags & RULE_NOINHERIT;
char old_is_ni = old->flags & RULE_NOINHERIT;
ni_checkset *nic;
if (! filename)
filename = "(null)";
#if DEBUG
fprintf(stderr, "debug: merging rules for (%s) old(", filename);
checkset_show(stderr, old);
fputs(") + new(", stderr);
checkset_show(stderr, new);
fputs(") ", stderr);
#endif
if (! new_is_ni && ! old_is_ni) {
checkset_warn_overwrite(old, filename);
checkset_free(old);
} else if (new_is_ni && ! old_is_ni) {
nic = (ni_checkset *) new;
/* sanity check: since the new one is non-inheriting, there
* shouldn't be any regular switches */
if (nic->regular.switches)
die(__FUNCTION__,
"Error: cascading switches in non-inheriting "
"checkset for file(%s)\n", filename);
/* just juggle pointers to avoid copying. */
nic->regular.switches = old->switches;
old->switches = NULL;
/* if old OR new wants ignoring or nochildren-ing, they get it */
nic->regular.flags |= old->flags & RULE_NOINHERIT;
nic->regular.flags |= old->flags & RULE_NOCHILDREN;
checkset_free(old);
} else if (! new_is_ni && old_is_ni) {
nic = (ni_checkset *) old;
if (nic->regular.switches) {
checkset_warn_overwrite(old, filename);
free(nic->regular.switches);
}
nic->regular.switches = new->switches;
new->switches = NULL;
/* if old OR new wants ignoring or nochildren-ing, they get it */
nic->regular.flags |= new->flags & RULE_NOINHERIT;
nic->regular.flags |= new->flags & RULE_NOCHILDREN;
checkset_free(new);
new = old;
} else if (new_is_ni && old_is_ni) {
ni_checkset *new_nic = (ni_checkset *) new;
ni_checkset *old_nic = (ni_checkset *) old;
fprintf(stderr,
"Warning: overwriting non-inheriting part of old checkset (");
checkset_show(stderr, old);
fprintf(stderr, ") for file (%s)\n", filename);
if (! new_nic->regular.switches) {
if (old_nic->regular.switches) {
new_nic->regular.switches = old_nic->regular.switches;
old_nic->regular.switches = NULL;
} else {
fprintf(stderr,
"Warning: overwriting cascading part of old checkset (");
checkset_show(stderr, old);
fprintf(stderr, ") for file (%s)\n", filename);
}
}
checkset_free(old);
} else {
die(__FUNCTION__,
"Error: unexpected condition: new checkset %s & old %s",
new_is_ni ? "doesn't inherit" : "cascades",
old_is_ni ? "doesn't inherit" : "cascades");
}
#if DEBUG
fputs("= (", stderr);
checkset_show(stderr, new);
fputs(")\n", stderr);
#endif
return new;
}
void checkset_show(FILE *out, checkset *c)
{
ni_checkset *nic;
if (c->flags & RULE_IGNORE)
putc('!', out);
if (c->flags & RULE_NOCHILDREN)
putc('=', out);
if (c->switches)
fputs(c->switches, out);
if (c->flags & RULE_NOINHERIT) {
nic = (ni_checkset *) c;
fprintf(out, "; $%s", nic->ni_switches);
}
}
/* this can handle non-inheriting and cascading checksets properly */
void checkset_free(checkset *c)
{
ni_checkset *nic;
if (c->switches)
free(c->switches);
if (c->flags & RULE_NOINHERIT) {
nic = (ni_checkset *) c;
if (nic->ni_switches)
free(nic->ni_switches);
}
free(c);
}
checkset *checkset_new()
{
checkset *new = malloc(sizeof(checkset));
if (! new)
DIE("malloc checkset");
checkset_init(new);
return new;
}
ni_checkset *ni_checkset_new()
{
ni_checkset *new = malloc(sizeof(ni_checkset));
if (! new)
DIE("malloc ni_checkset");
ni_checkset_init(new);
return new;
}
|
