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bb7e6f0f51
Our packet layer relies on the event system reliably telling us when a packet is available. When we are using a socket layer like TLS then things get a bit trickier, as there may be bytes in the encryption buffer which could be read even if there are no bytes at the socket level. The GNUTLS library is supposed to prevent this happening by always leaving some data at the socket level when there is data to be processed in its buffers, but it seems that this is not always reliable. To work around this I have added a new packet option packet_set_unreliable_select() which tells the packet layer to not assume that the socket layer has a reliable select, and to instead keep trying to read from the socket until it gets back no data. This option is set for the ldap client and server when TLS is negotiated. This seems to fix the problems with the ldaps tests.
65 lines
2.7 KiB
C
65 lines
2.7 KiB
C
/*
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Unix SMB/CIFS mplementation.
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helper layer for breaking up streams into discrete requests
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Copyright (C) Andrew Tridgell 2005
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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struct packet_context;
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struct tevent_context;
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struct tevent_fd;
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typedef NTSTATUS (*packet_full_request_fn_t)(void *private_data,
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DATA_BLOB blob, size_t *packet_size);
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typedef NTSTATUS (*packet_callback_fn_t)(void *private_data, DATA_BLOB blob);
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/* Used to notify that a packet has been sent, and is on the wire */
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typedef void (*packet_send_callback_fn_t)(void *private_data);
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typedef void (*packet_error_handler_fn_t)(void *private_data, NTSTATUS status);
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struct packet_context *packet_init(TALLOC_CTX *mem_ctx);
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void packet_set_callback(struct packet_context *pc, packet_callback_fn_t callback);
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void packet_set_error_handler(struct packet_context *pc, packet_error_handler_fn_t handler);
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void packet_set_private(struct packet_context *pc, void *private_data);
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void packet_set_full_request(struct packet_context *pc, packet_full_request_fn_t callback);
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void packet_set_socket(struct packet_context *pc, struct socket_context *sock);
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void packet_set_event_context(struct packet_context *pc, struct tevent_context *ev);
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void packet_set_fde(struct packet_context *pc, struct tevent_fd *fde);
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void packet_set_serialise(struct packet_context *pc);
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void packet_set_initial_read(struct packet_context *pc, uint32_t initial_read);
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void packet_set_nofree(struct packet_context *pc);
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void packet_recv(struct packet_context *pc);
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void packet_recv_disable(struct packet_context *pc);
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void packet_recv_enable(struct packet_context *pc);
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void packet_set_unreliable_select(struct packet_context *pc);
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NTSTATUS packet_send(struct packet_context *pc, DATA_BLOB blob);
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NTSTATUS packet_send_callback(struct packet_context *pc, DATA_BLOB blob,
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packet_send_callback_fn_t send_callback,
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void *private_data);
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void packet_queue_run(struct packet_context *pc);
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/*
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pre-canned handlers
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*/
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NTSTATUS packet_full_request_nbt(void *private_data, DATA_BLOB blob, size_t *size);
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NTSTATUS packet_full_request_u32(void *private_data, DATA_BLOB blob, size_t *size);
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