/*      $NetBSD: fsdbutil.c,v 1.24 2022/11/17 06:40:38 chs Exp $        */

/*-
 * Copyright (c) 1996 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by John T. Kohl.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: fsdbutil.c,v 1.24 2022/11/17 06:40:38 chs Exp $");
#endif /* not lint */

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/mount.h>
#include <fcntl.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <err.h>

#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>

#include "fsdb.h"
#include "fsck.h"

char  **
crack(char *line, int *argc)
{
        static char *argv[8];
        int     i;
        char   *p, *val;
        for (p = line, i = 0; p != NULL && i < 8; i++) {
                while ((val = strsep(&p, " \t\n")) != NULL && *val == '\0')
                         /**/ ;
                if (val)
                        argv[i] = val;
                else
                        break;
        }
        *argc = i;
        return argv;
}

int
argcount(struct cmdtable *cmdp, int argc, char *argv[])
{
        if (cmdp->minargc == cmdp->maxargc)
                warnx("command `%s' takes %u arguments", cmdp->cmd,
                    cmdp->minargc - 1);
        else
                warnx("command `%s' takes from %u to %u arguments",
                    cmdp->cmd, cmdp->minargc - 1, cmdp->maxargc - 1);

        warnx("usage: %s: %s", cmdp->cmd, cmdp->helptxt);
        return 1;
}

void
printstat(const char *cp, ino_t inum, union dinode *dp)
{
        struct group *grp;
        struct passwd *pw;
        time_t  t;
        char   *p;
        uint64_t size, blocks;
        uint32_t extsize;
        uint16_t mode;
        uint32_t rdev;
        uint32_t uid, gid;

        size = iswap64(DIP(dp, size));
        extsize = is_ufs2 ? iswap32(dp->dp2.di_extsize) : 0;
        blocks = is_ufs2 ? iswap64(DIP(dp, blocks)) : iswap32(DIP(dp, blocks));
        mode = iswap16(DIP(dp, mode));
        rdev = iswap32(DIP(dp, rdev));

        printf("%s: ", cp);
        switch (mode & IFMT) {
        case IFDIR:
                puts("directory");
                break;
        case IFREG:
                puts("regular file");
                break;
        case IFBLK:
                printf("block special (%llu,%llu)",
                    (unsigned long long)major(rdev),
                    (unsigned long long)minor(rdev));
                break;
        case IFCHR:
                printf("character special (%llu,%llu)",
                    (unsigned long long)major(rdev),
                    (unsigned long long)minor(rdev));
                break;
        case IFLNK:
                fputs("symlink", stdout);
                if (size > 0 && size < (uint64_t)sblock->fs_maxsymlinklen &&
                    DIP(dp, blocks) == 0) {
                        p = is_ufs2 ? (char *)dp->dp2.di_db :
                            (char *)dp->dp1.di_db;
                        printf(" to `%.*s'\n", (int)size, p);
                } else
                        putchar('\n');
                break;
        case IFSOCK:
                puts("socket");
                break;
        case IFIFO:
                puts("fifo");
                break;
        }
        printf("I=%llu MODE=%o SIZE=%llu EXTSIZE=%u", (unsigned long long)inum,
            mode, (unsigned long long)size, extsize);
        t = is_ufs2 ? iswap64(dp->dp2.di_mtime) : iswap32(dp->dp1.di_mtime);
        p = ctime(&t);
        printf("\n\t    MTIME=%15.15s %4.4s [%d nsec]", &p[4], &p[20],
            iswap32(DIP(dp, mtimensec)));
        t = is_ufs2 ? iswap64(dp->dp2.di_ctime) : iswap32(dp->dp1.di_ctime);
        p = ctime(&t);
        printf("\n\t    CTIME=%15.15s %4.4s [%d nsec]", &p[4], &p[20],
            iswap32(DIP(dp, ctimensec)));
        t = is_ufs2 ? iswap64(dp->dp2.di_atime) : iswap32(dp->dp1.di_atime);
        p = ctime(&t);
        printf("\n\t    ATIME=%15.15s %4.4s [%d nsec]", &p[4], &p[20],
            iswap32(DIP(dp,atimensec)));
        if (is_ufs2) {
                t = iswap64(dp->dp2.di_birthtime);
                p = ctime(&t);
                printf("\n\tBIRTHTIME=%15.15s %4.4s [%d nsec]\n", &p[4], &p[20],
                    iswap32(dp->dp2.di_birthnsec));
        } else {
                printf("\n");
        }

        if (!is_ufs2 && sblock->fs_old_inodefmt < FS_44INODEFMT)
                uid = iswap16(dp->dp1.di_ouid);
        else
                uid = iswap32(DIP(dp, uid));
        if ((pw = getpwuid(uid)) != NULL)
                printf("OWNER=%s ", pw->pw_name);
        else
                printf("OWNUID=%u ", uid);
        if (!is_ufs2 && sblock->fs_old_inodefmt < FS_44INODEFMT)
                gid = iswap16(dp->dp1.di_ogid);
        else
                gid = iswap32(DIP(dp, gid));
        if ((grp = getgrgid(gid)) != NULL)
                printf("GRP=%s ", grp->gr_name);
        else
                printf("GID=%u ", gid);

        printf("LINKCNT=%hd FLAGS=0x%x BLKCNT=0x%llx GEN=0x%x\n",
                iswap16(DIP(dp, nlink)),
            iswap32(DIP(dp, flags)), (unsigned long long)blocks,
                iswap32(DIP(dp, gen)));
}

int
checkactive(void)
{
        if (!curinode) {
                warnx("no current inode");
                return 0;
        }
        return 1;
}

int
checkactivedir(void)
{
        if (!curinode) {
                warnx("no current inode");
                return 0;
        }
        if ((iswap16(DIP(curinode, mode)) & IFMT) != IFDIR) {
                warnx("inode %llu not a directory",
                    (unsigned long long)curinum);
                return 0;
        }
        return 1;
}

int
printactive(void)
{
        uint16_t mode;

        if (!checkactive())
                return 1;
        mode = iswap16(DIP(curinode, mode));
        switch (mode & IFMT) {
        case IFDIR:
        case IFREG:
        case IFBLK:
        case IFCHR:
        case IFLNK:
        case IFSOCK:
        case IFIFO:
                printstat("current inode", curinum, curinode);
                break;
        case 0:
                printf("current inode %llu: unallocated inode\n",
                    (unsigned long long)curinum);
                break;
        default:
                printf("current inode %llu: screwy itype 0%o (mode 0%o)?\n",
                    (unsigned long long)curinum, mode & IFMT, mode);
                break;
        }
        return 0;
}