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      1 /*	$NetBSD: specspec.c,v 1.5 2023/12/02 13:24:00 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2003 Poul-Henning Kamp
      5  * 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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #if HAVE_NBTOOL_CONFIG_H
     30 #include "nbtool_config.h"
     31 #endif
     32 
     33 #include <sys/cdefs.h>
     34 __RCSID("$NetBSD: specspec.c,v 1.5 2023/12/02 13:24:00 christos Exp $");
     35 
     36 #include <err.h>
     37 #include <grp.h>
     38 #include <pwd.h>
     39 #include <time.h>
     40 #include <stdio.h>
     41 #include <stdint.h>
     42 #include <stdlib.h>
     43 #include <string.h>
     44 #include <unistd.h>
     45 #include "mtree.h"
     46 #include "extern.h"
     47 
     48 #define FF(a, b, c, d) \
     49 	(((a)->flags & (c)) && ((b)->flags & (c)) && ((a)->d) != ((b)->d))
     50 #define FS(a, b, c, d) \
     51 	(((a)->flags & (c)) && ((b)->flags & (c)) && strcmp((a)->d,(b)->d))
     52 #define FM(a, b, c, d) \
     53 	(((a)->flags & (c)) && ((b)->flags & (c)) && memcmp(&(a)->d,&(b)->d, sizeof (a)->d))
     54 
     55 static void
     56 shownode(NODE *n, int f, char const *path)
     57 {
     58 	struct group *gr;
     59 	struct passwd *pw;
     60 
     61 	printf("%s%s %s", path, n->name, inotype(nodetoino(n->type)));
     62 	if (f & F_CKSUM)
     63 		printf(" cksum=%lu", n->cksum);
     64 	if (f & F_GID)
     65 		printf(" gid=%d", n->st_gid);
     66 	if (f & F_GNAME) {
     67 		gr = getgrgid(n->st_gid);
     68 		if (gr == NULL)
     69 			printf(" gid=%d", n->st_gid);
     70 		else
     71 			printf(" gname=%s", gr->gr_name);
     72 	}
     73 	if (f & F_MODE)
     74 		printf(" mode=%o", n->st_mode);
     75 	if (f & F_NLINK)
     76 		printf(" nlink=%ju", (uintmax_t)n->st_nlink);
     77 	if (f & F_SIZE)
     78 		printf(" size=%jd", (intmax_t)n->st_size);
     79 	if (f & F_UID)
     80 		printf(" uid=%d", n->st_uid);
     81 	if (f & F_UNAME) {
     82 		pw = getpwuid(n->st_uid);
     83 		if (pw == NULL)
     84 			printf(" uid=%d", n->st_uid);
     85 		else
     86 			printf(" uname=%s", pw->pw_name);
     87 	}
     88 	if (f & F_MD5)
     89 		printf(" %s=%s", MD5KEY, n->md5digest);
     90 	if (f & F_SHA1)
     91 		printf(" %s=%s", SHA1KEY, n->sha1digest);
     92 	if (f & F_RMD160)
     93 		printf(" %s=%s", RMD160KEY, n->rmd160digest);
     94 	if (f & F_SHA256)
     95 		printf(" %s=%s", SHA256KEY, n->sha256digest);
     96 	if (f & F_SHA384)
     97 		printf(" %s=%s", SHA384KEY, n->sha384digest);
     98 	if (f & F_SHA512)
     99 		printf(" %s=%s", SHA512KEY, n->sha512digest);
    100 	if (f & F_FLAGS)
    101 		printf(" flags=%s", flags_to_string(n->st_flags, "none"));
    102 	printf("\n");
    103 }
    104 
    105 static int
    106 mismatch(NODE *n1, NODE *n2, int differ, char const *path)
    107 {
    108 
    109 	if (n2 == NULL) {
    110 		shownode(n1, differ, path);
    111 		return (1);
    112 	}
    113 	if (n1 == NULL) {
    114 		printf("\t");
    115 		shownode(n2, differ, path);
    116 		return (1);
    117 	}
    118 	if (!(differ & keys))
    119 		return(0);
    120 	printf("\t\t");
    121 	shownode(n1, differ, path);
    122 	printf("\t\t");
    123 	shownode(n2, differ, path);
    124 	return (1);
    125 }
    126 
    127 static int
    128 compare_nodes(NODE *n1, NODE *n2, char const *path)
    129 {
    130 	int differs;
    131 
    132 	if (n1 != NULL && n1->type == F_LINK)
    133 		n1->flags &= ~F_MODE;
    134 	if (n2 != NULL && n2->type == F_LINK)
    135 		n2->flags &= ~F_MODE;
    136 	differs = 0;
    137 	if (n1 == NULL && n2 != NULL) {
    138 		differs = n2->flags;
    139 		mismatch(n1, n2, differs, path);
    140 		return (1);
    141 	}
    142 	if (n1 != NULL && n2 == NULL) {
    143 		differs = n1->flags;
    144 		mismatch(n1, n2, differs, path);
    145 		return (1);
    146 	}
    147 	if (n1->type != n2->type) {
    148 		differs = F_TYPE;
    149 		mismatch(n1, n2, differs, path);
    150 		return (1);
    151 	}
    152 	if (FF(n1, n2, F_CKSUM, cksum))
    153 		differs |= F_CKSUM;
    154 	if (FF(n1, n2, F_GID, st_gid))
    155 		differs |= F_GID;
    156 	if (FF(n1, n2, F_GNAME, st_gid))
    157 		differs |= F_GNAME;
    158 	if (FF(n1, n2, F_MODE, st_mode))
    159 		differs |= F_MODE;
    160 	if (FF(n1, n2, F_NLINK, st_nlink))
    161 		differs |= F_NLINK;
    162 	if (FF(n1, n2, F_SIZE, st_size))
    163 		differs |= F_SIZE;
    164 	if (FS(n1, n2, F_SLINK, slink))
    165 		differs |= F_SLINK;
    166 	if (FM(n1, n2, F_TIME, st_mtimespec))
    167 		differs |= F_TIME;
    168 	if (FF(n1, n2, F_UID, st_uid))
    169 		differs |= F_UID;
    170 	if (FF(n1, n2, F_UNAME, st_uid))
    171 		differs |= F_UNAME;
    172 	if (FS(n1, n2, F_MD5, md5digest))
    173 		differs |= F_MD5;
    174 	if (FS(n1, n2, F_SHA1, sha1digest))
    175 		differs |= F_SHA1;
    176 	if (FS(n1, n2, F_RMD160, rmd160digest))
    177 		differs |= F_RMD160;
    178 	if (FS(n1, n2, F_SHA256, sha256digest))
    179 		differs |= F_SHA256;
    180 	if (FS(n1, n2, F_SHA384, sha384digest))
    181 		differs |= F_SHA384;
    182 	if (FS(n1, n2, F_SHA512, sha512digest))
    183 		differs |= F_SHA512;
    184 	if (FF(n1, n2, F_FLAGS, st_flags))
    185 		differs |= F_FLAGS;
    186 	if (differs) {
    187 		mismatch(n1, n2, differs, path);
    188 		return (1);
    189 	}
    190 	return (0);
    191 }
    192 static int
    193 walk_in_the_forest(NODE *t1, NODE *t2, char const *path)
    194 {
    195 	int r, i;
    196 	NODE *c1, *c2, *n1, *n2;
    197 	char *np;
    198 
    199 	r = 0;
    200 
    201 	if (t1 != NULL)
    202 		c1 = t1->child;
    203 	else
    204 		c1 = NULL;
    205 	if (t2 != NULL)
    206 		c2 = t2->child;
    207 	else
    208 		c2 = NULL;
    209 	while (c1 != NULL || c2 != NULL) {
    210 		n1 = n2 = NULL;
    211 		if (c1 != NULL)
    212 			n1 = c1->next;
    213 		if (c2 != NULL)
    214 			n2 = c2->next;
    215 		if (c1 != NULL && c2 != NULL) {
    216 			if (c1->type != F_DIR && c2->type == F_DIR) {
    217 				n2 = c2;
    218 				c2 = NULL;
    219 			} else if (c1->type == F_DIR && c2->type != F_DIR) {
    220 				n1 = c1;
    221 				c1 = NULL;
    222 			} else {
    223 				i = strcmp(c1->name, c2->name);
    224 				if (i > 0) {
    225 					n1 = c1;
    226 					c1 = NULL;
    227 				} else if (i < 0) {
    228 					n2 = c2;
    229 					c2 = NULL;
    230 				}
    231 			}
    232 		}
    233 		if (c1 == NULL && c2->type == F_DIR) {
    234 			asprintf(&np, "%s%s/", path, c2->name);
    235 			i = walk_in_the_forest(c1, c2, np);
    236 			free(np);
    237 			i += compare_nodes(c1, c2, path);
    238 		} else if (c2 == NULL && c1->type == F_DIR) {
    239 			asprintf(&np, "%s%s/", path, c1->name);
    240 			i = walk_in_the_forest(c1, c2, np);
    241 			free(np);
    242 			i += compare_nodes(c1, c2, path);
    243 		} else if (c1 == NULL || c2 == NULL) {
    244 			i = compare_nodes(c1, c2, path);
    245 		} else if (c1->type == F_DIR && c2->type == F_DIR) {
    246 			asprintf(&np, "%s%s/", path, c1->name);
    247 			i = walk_in_the_forest(c1, c2, np);
    248 			free(np);
    249 			i += compare_nodes(c1, c2, path);
    250 		} else {
    251 			i = compare_nodes(c1, c2, path);
    252 		}
    253 		r += i;
    254 		c1 = n1;
    255 		c2 = n2;
    256 	}
    257 	return (r);
    258 }
    259 
    260 int
    261 mtree_specspec(FILE *fi, FILE *fj)
    262 {
    263 	int rval;
    264 	NODE *root1, *root2;
    265 
    266 	root1 = spec(fi);
    267 	root2 = spec(fj);
    268 	rval = walk_in_the_forest(root1, root2, "");
    269 	rval += compare_nodes(root1, root2, "");
    270 	if (rval > 0)
    271 		return (MISMATCHEXIT);
    272 	return (0);
    273 }
    274