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/* viewdb.c
integrit - file integrity verification system
Copyright (C) 2000, 2001, 2002 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 <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
#include <errno.h>
#include <sys/stat.h>
/* support platforms that don't yet conform to C99 */
#if HAVE_STDINT_H
#include <stdint.h>
#elif HAVE_INTTYPES_H
#include <inttypes.h>
#else
#error No stdint.h or inttypes.h found.
#endif
#include "gnupg/sha1.h"
#include "elcerror_p.h"
#include "elcerror.h"
#include "cdb.h"
#include "cdb_seq.h"
#include "dbinfo.h"
#include "show.h"
#ifdef ELC_FIND_LEAKS
#include "leakfind.h"
#endif
#undef PROGNAME
#define PROGNAME "i-viewdb"
typedef struct options {
char *targetname;
unsigned checksums: 1;
} options;
void viewdb(options *opts)
{
cdb_seq seq;
int err;
unsigned ksiz = 1024; /* beginning key space allotment */
char *key = malloc(ksiz);
dbinfo val;
size_t klen, vlen;
if (! key)
DIE("malloc key");
if ( (seq.fd = open(opts->targetname, O_RDONLY | O_NDELAY)) == -1)
die(__FUNCTION__, "Error: opening integrit database (%s): %s",
opts->targetname, strerror(errno));
if (cdb_seq_start(&seq) == -1)
DIE("cdb_seq_start");
while (! cdb_seq_eod(&seq)) { /* while not end of data */
if ( (err = cdb_seq_sizes(&seq, &klen, &vlen)) == -1)
DIE("cdb_seq_sizes");
else if (err == 1) /* no more in db sequence */
break;
while (klen > ksiz) {
if (ksiz > (UINT_MAX / 2))
DIE("key size too big");
ksiz *= 2;
if (! (key = realloc(key, ksiz)) )
die(__FUNCTION__,
"Error: realloc key (length %d) with size (%d): %s",
klen, ksiz, strerror(errno));
}
if (vlen > sizeof(val))
die(__FUNCTION__, "Error: bad entry (too big value) in DB (%s)",
opts->targetname);
if (cdb_seq_get(&seq, key, klen, &val, vlen) == -1)
DIE("cdb_seq_getkey");
show_entry(opts->checksums, key, klen, &val, vlen);
}
free(key);
}
void usage(void)
{
fputs("Usage:\n " PROGNAME " [-s] {dbfile}\n"
"Options:\n -s don't show checksums\n",
stderr);
}
int main(int argc, char *argv[])
{
options opts = { NULL, 1 };
char *arg = argv[1];
if (argc > 2)
/* handle the checksums option */
if (! strcmp(arg, "-s")) {
opts.checksums = 0;
arg = argv[2];
}
if (argc > 1)
opts.targetname = arg;
if (opts.targetname) {
viewdb(&opts);
} else {
usage();
exit(EXIT_FAILURE);
}
#ifdef ELC_FIND_LEAKS
GC_gcollect(); /* find the leaks before exiting */
#endif
return 0;
}
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