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1 /*-
2  * Copyright (c) 2003 Poul-Henning Kamp
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  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <err.h>
31 #include <grp.h>
32 #include <pwd.h>
33 #include <stdio.h>
34 #include <stdint.h>
35 #include <unistd.h>
36 #include "mtree.h"
37 #include "extern.h"
38
39 #define FF(a, b, c, d) \
40         (((a)->flags & (c)) && ((b)->flags & (c)) && ((a)->d) != ((b)->d))
41 #define FS(a, b, c, d) \
42         (((a)->flags & (c)) && ((b)->flags & (c)) && strcmp((a)->d,(b)->d))
43 #define FM(a, b, c, d) \
44         (((a)->flags & (c)) && ((b)->flags & (c)) && memcmp(&(a)->d,&(b)->d, sizeof (a)->d))
45
46 static void
47 shownode(NODE *n, int f, char const *path)
48 {
49         struct group *gr;
50         struct passwd *pw;
51
52         printf("%s%s %s", path, n->name, ftype(n->type));
53         if (f & F_CKSUM)
54                 printf(" cksum=%lu", n->cksum);
55         if (f & F_GID)
56                 printf(" gid=%d", n->st_gid);
57         if (f & F_GNAME) {
58                 gr = getgrgid(n->st_gid);
59                 if (gr == NULL)
60                         printf(" gid=%d", n->st_gid);
61                 else
62                         printf(" gname=%s", gr->gr_name);
63         }
64         if (f & F_MODE)
65                 printf(" mode=%o", n->st_mode);
66         if (f & F_NLINK)
67                 printf(" nlink=%d", n->st_nlink);
68         if (f & F_SIZE)
69                 printf(" size=%jd", (intmax_t)n->st_size);
70         if (f & F_UID)
71                 printf(" uid=%d", n->st_uid);
72         if (f & F_UNAME) {
73                 pw = getpwuid(n->st_uid);
74                 if (pw == NULL)
75                         printf(" uid=%d", n->st_uid);
76                 else
77                         printf(" uname=%s", pw->pw_name);
78         }
79         if (f & F_MD5)
80                 printf(" md5digest=%s", n->md5digest);
81         if (f & F_SHA1)
82                 printf(" sha1digest=%s", n->sha1digest);
83         if (f & F_RMD160)
84                 printf(" rmd160digest=%s", n->rmd160digest);
85         if (f & F_SHA256)
86                 printf(" sha256digest=%s", n->sha256digest);
87         if (f & F_FLAGS)
88                 printf(" flags=%s", flags_to_string(n->st_flags));
89         printf("\n");
90 }
91
92 static int
93 mismatch(NODE *n1, NODE *n2, int differ, char const *path)
94 {
95
96         if (n2 == NULL) {
97                 shownode(n1, differ, path);
98                 return (1);
99         }
100         if (n1 == NULL) {
101                 printf("\t");
102                 shownode(n2, differ, path);
103                 return (1);
104         }
105         if (!(differ & keys))
106                 return(0);
107         printf("\t\t");
108         shownode(n1, differ, path);
109         printf("\t\t");
110         shownode(n2, differ, path);
111         return (1);
112 }
113
114 static int
115 compare_nodes(NODE *n1, NODE *n2, char const *path)
116 {
117         int differs;
118         
119         if (n1 != NULL && n1->type == F_LINK)
120                 n1->flags &= ~F_MODE;
121         if (n2 != NULL && n2->type == F_LINK)
122                 n2->flags &= ~F_MODE;
123         differs = 0;
124         if (n1 == NULL && n2 != NULL) {
125                 differs = n2->flags;
126                 mismatch(n1, n2, differs, path);
127                 return (1);
128         }
129         if (n1 != NULL && n2 == NULL) {
130                 differs = n1->flags;
131                 mismatch(n1, n2, differs, path);
132                 return (1);
133         }
134         if (n1->type != n2->type) {
135                 differs = 0;
136                 mismatch(n1, n2, differs, path);
137                 return (1);
138         }
139         if (FF(n1, n2, F_CKSUM, cksum))
140                 differs |= F_CKSUM;
141         if (FF(n1, n2, F_GID, st_gid))
142                 differs |= F_GID;
143         if (FF(n1, n2, F_GNAME, st_gid))
144                 differs |= F_GNAME;
145         if (FF(n1, n2, F_MODE, st_mode))
146                 differs |= F_MODE;
147         if (FF(n1, n2, F_NLINK, st_nlink))
148                 differs |= F_NLINK;
149         if (FF(n1, n2, F_SIZE, st_size))
150                 differs |= F_SIZE;
151         if (FS(n1, n2, F_SLINK, slink))
152                 differs |= F_SLINK;
153         if (FM(n1, n2, F_TIME, st_mtimespec))
154                 differs |= F_TIME;
155         if (FF(n1, n2, F_UID, st_uid))
156                 differs |= F_UID;
157         if (FF(n1, n2, F_UNAME, st_uid))
158                 differs |= F_UNAME;
159         if (FS(n1, n2, F_MD5, md5digest))
160                 differs |= F_MD5;
161         if (FS(n1, n2, F_SHA1, sha1digest))
162                 differs |= F_SHA1;
163         if (FS(n1, n2, F_RMD160, rmd160digest))
164                 differs |= F_RMD160;
165         if (FS(n1, n2, F_SHA256, sha256digest))
166                 differs |= F_SHA256;
167         if (FF(n1, n2, F_FLAGS, st_flags))
168                 differs |= F_FLAGS;
169         if (differs) {
170                 mismatch(n1, n2, differs, path);
171                 return (1);
172         }
173         return (0);     
174 }
175 static int
176 walk_in_the_forest(NODE *t1, NODE *t2, char const *path)
177 {
178         int r, i;
179         NODE *c1, *c2, *n1, *n2;
180         char *np;
181
182         r = 0;
183
184         if (t1 != NULL)
185                 c1 = t1->child;
186         else
187                 c1 = NULL;
188         if (t2 != NULL)
189                 c2 = t2->child;
190         else
191                 c2 = NULL;
192         while (c1 != NULL || c2 != NULL) {
193                 n1 = n2 = NULL;
194                 if (c1 != NULL)
195                         n1 = c1->next;
196                 if (c2 != NULL)
197                         n2 = c2->next;
198                 if (c1 != NULL && c2 != NULL) {
199                         if (c1->type != F_DIR && c2->type == F_DIR) {
200                                 n2 = c2;
201                                 c2 = NULL;
202                         } else if (c1->type == F_DIR && c2->type != F_DIR) {
203                                 n1 = c1;
204                                 c1 = NULL;
205                         } else {
206                                 i = strcmp(c1->name, c2->name);
207                                 if (i > 0) {
208                                         n1 = c1;
209                                         c1 = NULL;
210                                 } else if (i < 0) {
211                                         n2 = c2;
212                                         c2 = NULL;
213                                 }
214                         }
215                 }
216                 if (c1 == NULL && c2->type == F_DIR) {
217                         asprintf(&np, "%s%s/", path, c2->name);
218                         i = walk_in_the_forest(c1, c2, np);
219                         free(np);
220                         i += compare_nodes(c1, c2, path);
221                 } else if (c2 == NULL && c1->type == F_DIR) {
222                         asprintf(&np, "%s%s/", path, c1->name);
223                         i = walk_in_the_forest(c1, c2, np);
224                         free(np);
225                         i += compare_nodes(c1, c2, path);
226                 } else if (c1 == NULL || c2 == NULL) {
227                         i = compare_nodes(c1, c2, path);
228                 } else if (c1->type == F_DIR && c2->type == F_DIR) {
229                         asprintf(&np, "%s%s/", path, c1->name);
230                         i = walk_in_the_forest(c1, c2, np);
231                         free(np);
232                         i += compare_nodes(c1, c2, path);
233                 } else {
234                         i = compare_nodes(c1, c2, path);
235                 }
236                 r += i;
237                 c1 = n1;
238                 c2 = n2;
239         }
240         return (r);     
241 }
242
243 int
244 mtree_specspec(FILE *fi, FILE *fj)
245 {
246         int rval;
247         NODE *root1, *root2;
248
249         root1 = mtree_readspec(fi);
250         root2 = mtree_readspec(fj);
251         rval = walk_in_the_forest(root1, root2, "");
252         rval += compare_nodes(root1, root2, "");
253         if (rval > 0)
254                 return (MISMATCHEXIT);
255         return (0);
256 }