libcli/util/tstream.h

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *
   4  *  Copyright (C) Stefan Metzmacher 2009
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef _LIBCLI_UTIL_TSTREAM_H_
  21 #define _LIBCLI_UTIL_TSTREAM_H_
  22
  23 /**
  24  * @brief A helper function to read a full PDU from a stream
  25  *
  26  * This function is designed for simple PDUs and as compat layer
  27  * for the Samba4 packet interface.
  28  *
  29  * tstream_readv_pdu_send() is a more powerful interface,
  30  * which is part of the main (non samba specific) tsocket code.
  31  *
  32  * @param[in] mem_ctx           The memory context for the result.
  33  *
  34  * @param[in] ev                The event context the operation should work on.
  35  *
  36  * @param[in] stream            The stream to read data from.
  37  *
  38  * @param[in] inital_read_size  The initial byte count that is needed to workout
  39  *                              the full pdu size.
  40  *
  41  * @param[in] full_fn           The callback function that will report the size
  42  *                              of the full pdu.
  43  *
  44  * @param[in] full_private      The private data for the callback function.
  45  *
  46  * @return                      The async request handle. NULL on fatal error.
  47  *
  48  * @see tstream_read_pdu_blob_recv()
  49  * @see tstream_readv_pdu_send()
  50  * @see tstream_readv_pdu_queue_send()
  51  *
  52  */
  53 struct tevent_req *tstream_read_pdu_blob_send(TALLOC_CTX *mem_ctx,
  54                                 struct tevent_context *ev,
  55                                 struct tstream_context *stream,
  56                                 size_t inital_read_size,
  57                                 NTSTATUS (*full_fn)(void *private_data,
  58                                                     DATA_BLOB blob,
  59                                                     size_t *packet_size),
  60                                 void *full_private);
  61 /**
  62  * @brief Receive the result of the tstream_read_pdu_blob_send() call.
  63  *
  64  * @param[in] req       The tevent request from tstream_read_pdu_blob_send().
  65  *
  66  * @param[in] mem_ctx   The memory context for returned pdu DATA_BLOB.
  67  *
  68  * @param[in] pdu_blob  The DATA_BLOB with the full pdu.
  69  *
  70  * @return              The NTSTATUS result, NT_STATUS_OK on success
  71  *                      and others on failure.
  72  *
  73  * @see tstream_read_pdu_blob_send()
  74  */
  75 NTSTATUS tstream_read_pdu_blob_recv(struct tevent_req *req,
  76                                     TALLOC_CTX *mem_ctx,
  77                                     DATA_BLOB *pdu_blob);
  78
  79 #endif /* _LIBCLI_UTIL_TSTREAM_H_ */