Free Hero Mesh

  sqlite3_bind_int(readusercachest,2,lvl);
  if(sqlite3_step(readusercachest)==SQLITE_ROW) {
    if(us) *us=sqlite3_value_dup(sqlite3_column_value(readusercachest,6));
    if(sqlite3_column_type(readusercachest,5)==SQLITE_BLOB) {
      const unsigned char*con=sqlite3_column_blob(readusercachest,5);
      *sz=sqlite3_column_bytes(readusercachest,5);
      buf=malloc(*sz);
      if(*sz && !buf) fatal("Allocation failed\n");
      memcpy(buf,con,*sz);
    } else {
      FILE*fp=sol?solutionfp:levelfp;
      rewind(fp);
      fseek(fp,sqlite3_column_int64(readusercachest,4)-4,SEEK_SET);
      *sz=fgetc(fp)<<16; *sz|=fgetc(fp)<<24; *sz|=fgetc(fp); *sz|=fgetc(fp)<<8;
      if(feof(fp) || *sz<0) fatal("Invalid Hamster archive\n");

    ofs[i++]=sqlite3_column_int64(st,0);
    if(sqlite3_column_type(st,1)!=SQLITE_TEXT || sqlite3_column_type(st,2)!=SQLITE_BLOB) fatal("Corrupted user cache database (NAME and DATA columns have wrong types)\n");
    fwrite(sqlite3_column_text(st,1),1,sqlite3_column_bytes(st,1)+1,fp);
    j=sqlite3_column_bytes(st,2);
    fputc(j>>16,fp); fputc(j>>24,fp); fputc(j,fp); fputc(j>>8,fp);
    ofs[i++]=ftell(fp);
    fwrite(sqlite3_column_blob(st,2),1,j,fp);
    if(ferror(fp)) fatal("I/O error: %m\n");
  }
  if(e!=SQLITE_DONE) fatal("SQL error (%d): %s\n",e,sqlite3_errmsg(userdb));
  if(ftruncate(fd,ftell(fp))) fatal("I/O error: %m\n");
  rewind(fp);
  sqlite3_finalize(st);
  if(e=sqlite3_prepare_v2(userdb,"UPDATE `USERCACHEDATA` SET `OFFSET` = ?2 WHERE `ID` = ?1;",-1,&st,0)) fatal("SQL error (%d): %s\n",e,sqlite3_errmsg(userdb));
  i=0;
  while(i<c) {
    sqlite3_reset(st);
    sqlite3_bind_int64(st,1,ofs[i++]);
    sqlite3_bind_int64(st,2,ofs[i++]);

  fprintf(stderr,"Initializing user cache...\n");
  if(z=sqlite3_exec(userdb,"BEGIN;",0,0,0)) fatal("SQL error (%d): %s\n",z,sqlite3_errmsg(userdb));
  if(z=sqlite3_prepare_v2(userdb,"SELECT `ID`, `TIME` FROM `USERCACHEINDEX` WHERE `NAME` = ?1;",-1,&st,0)) fatal("SQL error (%d): %s\n",z,sqlite3_errmsg(userdb));
  nam1=sqlite3_mprintf("%s.level",basefilename);
  if(!nam1) fatal("Allocation failed\n");
  nam2=realpath(nam1,0);
  if(!nam2) fatal("Cannot find real path of '%s': %m\n",nam1);
  levelfp=fopen(nam2,main_options['r']?"r":"r+");
  if(!levelfp) fatal("Cannot open '%s' for reading%s: %m\n",nam2,main_options['r']?"":"/writing");
  sqlite3_free(nam1);
  sqlite3_bind_text(st,1,nam2,-1,0);
  z=sqlite3_step(st);
  if(z==SQLITE_ROW) {
    leveluc=sqlite3_column_int64(st,0);
    t1=sqlite3_column_int64(st,1);
  } else if(z==SQLITE_DONE) {
    leveluc=t1=-1;
  } else {
    fatal("SQL error (%d): %s\n",z,sqlite3_errmsg(userdb));
  }
  sqlite3_reset(st);
  nam1=sqlite3_mprintf("%s.solution",basefilename);
  if(!nam1) fatal("Allocation failed\n");
  nam3=realpath(nam1,0);
  if(!nam3) fatal("Cannot find real path of '%s': %m\n",nam1);
  if(!strcmp(nam2,nam3)) fatal("Level and solution files seem to be the same file\n");
  solutionfp=fopen(nam3,main_options['r']?"r":"r+");
  if(!solutionfp) fatal("Cannot open '%s' for reading%s: %m\n",nam3,main_options['r']?"":"/writing");
  sqlite3_free(nam1);
  sqlite3_bind_text(st,1,nam3,-1,0);
  z=sqlite3_step(st);
  if(z==SQLITE_ROW) {
    solutionuc=sqlite3_column_int64(st,0);
    t2=sqlite3_column_int64(st,1);
  } else if(z==SQLITE_DONE) {
    solutionuc=t2=-1;
  } else {
    fatal("SQL error (%d): %s\n",z,sqlite3_errmsg(userdb));
  }
  sqlite3_finalize(st);
  if(stat(nam2,&fst)) fatal("Unable to stat '%s': %m\n",nam2);
  if(!fst.st_size) fatal("File '%s' has zero size\n",nam2);
  if(fst.st_mtime>t1 || fst.st_ctime>t1) leveluc=reset_usercache(levelfp,nam2,&fst,".LVL");
  if(stat(nam3,&fst)) fatal("Unable to stat '%s': %m\n",nam3);

  if(fst.st_mtime>t2 || fst.st_ctime>t2) solutionuc=reset_usercache(solutionfp,nam3,&fst,".SOL");
  free(nam2);
  free(nam3);
  if(z=sqlite3_prepare_v3(userdb,"SELECT * FROM `USERCACHEDATA` WHERE `FILE` = ?1 AND `LEVEL` = ?2;",-1,SQLITE_PREPARE_PERSISTENT,&readusercachest,0)) {
    fatal("SQL error (%d): %s\n",z,sqlite3_errmsg(userdb));
  }
  if(z=sqlite3_exec(userdb,"COMMIT;",0,0,0)) fatal("SQL error (%d): %s\n",z,sqlite3_errmsg(userdb));