Fossil

        exit(0);
      }else{
        char *z;
        stash_rid_renumbering_event();
        vfile_rid_renumbering_event(0);
        undo_reset();
        bisect_reset();
        z = db_fingerprint(0, 1);
        db_lset("fingerprint", z);
        fossil_free(z);
        fossil_print(
          "WARNING: The repository database has been replaced by a clone.\n"
          "Bisect history and undo have been lost.\n"
        );
      }

**
** The fingerprint consists of the rcvid, a "/", and the MD5 checksum of
** the remaining fields of the RCVFROM table entry.  MD5 is used for this
** because it is 4x faster than SHA3 and 5x faster than SHA1, and there
** are no security concerns - this is just a checksum, not a security
** token.
*/
char *db_fingerprint(int rcvid, int iVersion){ 
  char *z = 0;
  Blob sql = BLOB_INITIALIZER;
  Stmt q;
  if( iVersion==0 ){
    /* The original fingerprint algorithm used "quote(mtime)".  But this
    ** could give slightly different answers depending on how the floating-
    ** point hardware is configured.  For example, it gave different
    ** answers on native Linux versus running under valgrind.  */
    blob_append_sql(&sql,
      "SELECT rcvid, quote(uid), quote(mtime), quote(nonce), quote(ipaddr)"
      "  FROM rcvfrom"
    );
  }else{
    /* These days, we use "datetime(mtime)" for more consistent answers */
    blob_append_sql(&sql,
      "SELECT rcvid, quote(uid), datetime(mtime), quote(nonce), quote(ipaddr)"
      "  FROM rcvfrom"
    );
  }
  if( rcvid<=0 ){
    blob_append_sql(&sql, " ORDER BY rcvid DESC LIMIT 1");
  }else{
    blob_append_sql(&sql, " WHERE rcvid=%d", rcvid);
  }
  db_prepare_blob(&q, &sql);
  blob_reset(&sql);

  db_finalize(&q);
  return z;
}

/*
** COMMAND: test-fingerprint
**
** Usage: %fossil test-fingerprint ?RCVID?
**
** Display the repository fingerprint using the supplied RCVID or
** using the latest RCVID if not is given on the command line.
** Show both the legacy and the newer version of the fingerprint,
** and the currently stored fingerprint if there is one.
*/
void test_fingerprint(void){
  int rcvid = 0;





  db_find_and_open_repository(OPEN_ANY_SCHEMA,0);
  if( g.argc==3 ){
    rcvid = atoi(g.argv[2]);
  }else if( g.argc!=2 ){
    fossil_fatal("wrong number of arguments");
  } 
  fossil_print("legecy:              %z\n", db_fingerprint(rcvid, 0));
  fossil_print("version-1:           %z\n", db_fingerprint(rcvid, 1));
  if( g.localOpen ){
    fossil_print("localdb:             %z\n", db_lget("fingerprint","(none)"));
    fossil_print("db_fingerprint_ok(): %d\n", db_fingerprint_ok());
  }
}

/*
** Set the value of the "checkout" entry in the VVAR table.
**
** Also set "fingerprint" and "checkout-hash".
*/
void db_set_checkout(int rid){
  char *z;
  db_lset_int("checkout", rid);
  z = db_text(0,"SELECT uuid FROM blob WHERE rid=%d",rid);
  db_lset("checkout-hash", z);
  fossil_free(z);
  z = db_fingerprint(0, 1);
  db_lset("fingerprint", z);
  fossil_free(z);
}

/*
** Verify that the fingerprint recorded in the "fingerprint" entry
** of the VVAR table matches the fingerprint on the currently

  zCkout = db_text(0,"SELECT value FROM localdb.vvar WHERE name='fingerprint'");
  if( zCkout==0 ){
    /* This is an older checkout that does not record a fingerprint.
    ** We have to assume everything is ok */
    return 2;
  }
  zRepo = db_fingerprint(atoi(zCkout), 1);
  rc = fossil_strcmp(zCkout,zRepo)==0;
  fossil_free(zRepo);
  /* If the initial test fails, try again using the older fingerprint
  ** algorithm */
  if( !rc ){
    zRepo = db_fingerprint(atoi(zCkout), 0);
    rc = fossil_strcmp(zCkout,zRepo)==0;
    fossil_free(zRepo);
  }  
  fossil_free(zCkout);
  return rc;
}