/**
   * Constructor.
   *
   * @param rq request
   * @param rs response
   * @throws IOException I/O exception
   */
  public HTTPContext(final HttpServletRequest rq, final HttpServletResponse rs) throws IOException {

    req = rq;
    res = rs;
    final String m = rq.getMethod();
    method = HTTPMethod.get(m);

    final StringBuilder uri = new StringBuilder(req.getRequestURL());
    final String qs = req.getQueryString();
    if (qs != null) uri.append('?').append(qs);
    log(false, m, uri);

    // set UTF8 as default encoding (can be overwritten)
    res.setCharacterEncoding(UTF8);

    segments = toSegments(req.getPathInfo());
    path = join(0);

    user = System.getProperty(DBUSER);
    pass = System.getProperty(DBPASS);

    // set session-specific credentials
    final String auth = req.getHeader(AUTHORIZATION);
    if (auth != null) {
      final String[] values = auth.split(" ");
      if (values[0].equals(BASIC)) {
        final String[] cred = Base64.decode(values[1]).split(":", 2);
        if (cred.length != 2) throw new LoginException(NOPASSWD);
        user = cred[0];
        pass = cred[1];
      } else {
        throw new LoginException(WHICHAUTH, values[0]);
      }
    }
  }
 /**
  * Writes a log message.
  *
  * @param str strings to be written
  * @param time add performance info
  */
 public void log(final boolean time, final Object... str) {
   final Object[] obj = new Object[str.length + (time ? 2 : 1)];
   obj[0] = remote();
   System.arraycopy(str, 0, obj, 1, str.length);
   if (time) obj[obj.length - 1] = perf.toString();
   context.log.write(obj);
 }
Beispiel #3
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 /**
  * Fill the current buffer with bytes from the specified array from the specified offset.
  *
  * @param s source array
  * @param o offset from the beginning of the array
  * @return number of written bytes
  */
 private int write(final byte[] s, final int o) {
   final Buffer bf = bm.current();
   final int len = Math.min(IO.BLOCKSIZE, s.length - o);
   System.arraycopy(s, o, bf.data, 0, len);
   bf.dirty = true;
   return len;
 }
Beispiel #4
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 @Override
 protected void copy(final byte[] entries, final int pre, final int last) {
   for (int o = 0, i = pre; i < last; ++i, o += IO.NODESIZE) {
     final int off = cursor(i);
     final Buffer bf = bm.current();
     System.arraycopy(entries, o, bf.data, off, IO.NODESIZE);
     bf.dirty = true;
   }
 }
  /**
   * Initializes the servlet context, based on the servlet context. Parses all context parameters
   * and passes them on to the database context.
   *
   * @param sc servlet context
   * @throws IOException I/O exception
   */
  static synchronized void init(final ServletContext sc) throws IOException {
    // skip process if context has already been initialized
    if (context != null) return;

    // set servlet path as home directory
    final String path = sc.getRealPath("/");
    System.setProperty(Prop.PATH, path);

    // parse all context parameters
    final HashMap<String, String> map = new HashMap<String, String>();
    // store default web root
    map.put(MainProp.HTTPPATH[0].toString(), path);

    final Enumeration<?> en = sc.getInitParameterNames();
    while (en.hasMoreElements()) {
      final String key = en.nextElement().toString();
      if (!key.startsWith(Prop.DBPREFIX)) continue;

      // only consider parameters that start with "org.basex."
      String val = sc.getInitParameter(key);
      if (eq(key, DBUSER, DBPASS, DBMODE, DBVERBOSE)) {
        // store servlet-specific parameters as system properties
        System.setProperty(key, val);
      } else {
        // prefix relative paths with absolute servlet path
        if (key.endsWith("path") && !new File(val).isAbsolute()) {
          val = path + File.separator + val;
        }
        // store remaining parameters (without project prefix) in map
        map.put(key.substring(Prop.DBPREFIX.length()).toUpperCase(Locale.ENGLISH), val);
      }
    }
    context = new Context(map);

    if (SERVER.equals(System.getProperty(DBMODE))) {
      new BaseXServer(context);
    } else {
      context.log = new Log(context);
    }
  }
Beispiel #6
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  /**
   * Indexes the specified name and its kind.
   *
   * @param nm name id
   * @param knd node kind
   * @param value value
   * @param meta meta data
   * @return node reference
   */
  PathNode index(final int nm, final byte knd, final byte[] value, final MetaData meta) {
    for (final PathNode c : children) {
      if (c.kind == knd && c.name == nm) {
        if (value != null) c.stats.add(value, meta);
        c.stats.count++;
        return c;
      }
    }

    final PathNode node = new PathNode(nm, knd, this);
    if (value != null) node.stats.add(value, meta);

    final int cs = children.length;
    final PathNode[] nodes = new PathNode[cs + 1];
    System.arraycopy(children, 0, nodes, 0, cs);
    nodes[cs] = node;
    children = nodes;
    return node;
  }
Beispiel #7
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 /**
  * Convenience method for copying blocks.
  *
  * @param s source array
  * @param sp source position
  * @param d destination array
  * @param dp destination position
  * @param l source length
  */
 private void copy(final byte[] s, final int sp, final byte[] d, final int dp, final int l) {
   System.arraycopy(s, sp << IO.NODEPOWER, d, dp << IO.NODEPOWER, l << IO.NODEPOWER);
   bm.current().dirty = true;
 }
Beispiel #8
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  @Override
  public void insert(final int pre, final byte[] entries) {
    final int nnew = entries.length;
    if (nnew == 0) return;
    dirty();

    // number of records to be inserted
    final int nr = nnew >>> IO.NODEPOWER;

    int split = 0;
    if (used == 0) {
      // special case: insert new data into first block if database is empty
      readPage(0);
      usedPages.set(0);
      ++used;
    } else if (pre > 0) {
      // find the offset within the block where the new records will be inserted
      split = cursor(pre - 1) + IO.NODESIZE;
    } else {
      // all insert operations will add data after first node.
      // i.e., there is no "insert before first document" statement
      throw Util.notExpected("Insertion at beginning of populated table.");
    }

    // number of bytes occupied by old records in the current block
    final int nold = npre - fpre << IO.NODEPOWER;
    // number of bytes occupied by old records which will be moved at the end
    final int moved = nold - split;

    // special case: all entries fit in the current block
    Buffer bf = bm.current();
    if (nold + nnew <= IO.BLOCKSIZE) {
      Array.move(bf.data, split, nnew, moved);
      System.arraycopy(entries, 0, bf.data, split, nnew);
      bf.dirty = true;

      // increment first pre-values of blocks after the last modified block
      for (int i = page + 1; i < used; ++i) fpres[i] += nr;
      // update cached variables (fpre is not changed)
      npre += nr;
      meta.size += nr;
      return;
    }

    // append old entries at the end of the new entries
    final byte[] all = new byte[nnew + moved];
    System.arraycopy(entries, 0, all, 0, nnew);
    System.arraycopy(bf.data, split, all, nnew, moved);

    // fill in the current block with new entries
    // number of bytes which fit in the first block
    int nrem = IO.BLOCKSIZE - split;
    if (nrem > 0) {
      System.arraycopy(all, 0, bf.data, split, nrem);
      bf.dirty = true;
    }

    // number of new required blocks and remaining bytes
    final int req = all.length - nrem;
    int needed = req / IO.BLOCKSIZE;
    final int remain = req % IO.BLOCKSIZE;

    if (remain > 0) {
      // check if the last entries can fit in the block after the current one
      if (page + 1 < used) {
        final int o = occSpace(page + 1) << IO.NODEPOWER;
        if (remain <= IO.BLOCKSIZE - o) {
          // copy the last records
          readPage(page + 1);
          bf = bm.current();
          System.arraycopy(bf.data, 0, bf.data, remain, o);
          System.arraycopy(all, all.length - remain, bf.data, 0, remain);
          bf.dirty = true;
          // reduce the pre value, since it will be later incremented with nr
          fpres[page] -= remain >>> IO.NODEPOWER;
          // go back to the previous block
          readPage(page - 1);
        } else {
          // there is not enough space in the block - allocate a new one
          ++needed;
        }
      } else {
        // this is the last block - allocate a new one
        ++needed;
      }
    }

    // number of expected blocks: existing blocks + needed block - empty blocks
    final int exp = blocks + needed - (blocks - used);
    if (exp > fpres.length) {
      // resize directory arrays if existing ones are too small
      final int ns = Math.max(fpres.length << 1, exp);
      fpres = Arrays.copyOf(fpres, ns);
      pages = Arrays.copyOf(pages, ns);
    }

    // make place for the blocks where the new entries will be written
    Array.move(fpres, page + 1, needed, used - page - 1);
    Array.move(pages, page + 1, needed, used - page - 1);

    // write the all remaining entries
    while (needed-- > 0) {
      freeBlock();
      nrem += write(all, nrem);
      fpres[page] = fpres[page - 1] + IO.ENTRIES;
      pages[page] = (int) bm.current().pos;
    }

    // increment all fpre values after the last modified block
    for (int i = page + 1; i < used; ++i) fpres[i] += nr;

    meta.size += nr;

    // update cached variables
    fpre = fpres[page];
    npre = page + 1 < used && fpres[page + 1] < meta.size ? fpres[page + 1] : meta.size;
  }