8531fb6bb2
- All printf that was surrounded by #ifdef SCTP_DEBUG moves to a macro that does all of this. This removes all printfs from the code and makes the code more portable and easier to read. - Static Analysis (cisco) - found a few bugs, but mostly we add checks for NULL pointers and such to make the tool happy. We now pass the Cisco SA tools checks except for where it does not understand tailq/lists. We still need to look at the coverity tools output too (this is like the cisco SA tool) and see if it wants us to fix any other items. Hopefully this will be the last major churn in the code other than bug fixes.
195 lines
6.1 KiB
C
195 lines
6.1 KiB
C
/*-
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* Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* a) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* b) Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the distribution.
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*
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* c) Neither the name of Cisco Systems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* $KAME: sctp_peeloff.c,v 1.13 2005/03/06 16:04:18 itojun Exp $ */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <netinet/sctp_os.h>
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#include <netinet/sctp_pcb.h>
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#include <netinet/sctp.h>
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#include <netinet/sctp_uio.h>
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#include <netinet/sctp_var.h>
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#include <netinet/sctp_peeloff.h>
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#include <netinet/sctputil.h>
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#include <netinet/sctp_auth.h>
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#ifdef SCTP_DEBUG
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extern uint32_t sctp_debug_on;
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#endif /* SCTP_DEBUG */
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int
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sctp_can_peel_off(struct socket *head, sctp_assoc_t assoc_id)
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{
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struct sctp_inpcb *inp;
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struct sctp_tcb *stcb;
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inp = (struct sctp_inpcb *)head->so_pcb;
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if (inp == NULL) {
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return (EFAULT);
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}
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stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1);
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if (stcb == NULL) {
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return (ENOTCONN);
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}
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SCTP_TCB_UNLOCK(stcb);
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/* We are clear to peel this one off */
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return (0);
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}
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int
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sctp_do_peeloff(struct socket *head, struct socket *so, sctp_assoc_t assoc_id)
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{
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struct sctp_inpcb *inp, *n_inp;
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struct sctp_tcb *stcb;
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inp = (struct sctp_inpcb *)head->so_pcb;
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if (inp == NULL)
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return (EFAULT);
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stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1);
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if (stcb == NULL)
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return (ENOTCONN);
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n_inp = (struct sctp_inpcb *)so->so_pcb;
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n_inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
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SCTP_PCB_FLAGS_CONNECTED |
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SCTP_PCB_FLAGS_IN_TCPPOOL | /* Turn on Blocking IO */
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(SCTP_PCB_COPY_FLAGS & inp->sctp_flags));
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n_inp->sctp_socket = so;
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n_inp->sctp_features = inp->sctp_features;
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n_inp->sctp_frag_point = inp->sctp_frag_point;
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n_inp->partial_delivery_point = inp->partial_delivery_point;
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n_inp->sctp_context = inp->sctp_context;
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n_inp->inp_starting_point_for_iterator = NULL;
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/*
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* Now we must move it from one hash table to another and get the
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* stcb in the right place.
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*/
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sctp_move_pcb_and_assoc(inp, n_inp, stcb);
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sctp_pull_off_control_to_new_inp(inp, n_inp, stcb, M_WAITOK);
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SCTP_TCB_UNLOCK(stcb);
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return (0);
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}
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struct socket *
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sctp_get_peeloff(struct socket *head, sctp_assoc_t assoc_id, int *error)
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{
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struct socket *newso;
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struct sctp_inpcb *inp, *n_inp;
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struct sctp_tcb *stcb;
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SCTPDBG(SCTP_DEBUG_PEEL1, "SCTP peel-off called\n");
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inp = (struct sctp_inpcb *)head->so_pcb;
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if (inp == NULL) {
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*error = EFAULT;
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return (NULL);
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}
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stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1);
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if (stcb == NULL) {
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*error = ENOTCONN;
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return (NULL);
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}
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newso = sonewconn(head, SS_ISCONNECTED
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);
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if (newso == NULL) {
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SCTPDBG(SCTP_DEBUG_PEEL1, "sctp_peeloff:sonewconn failed\n");
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*error = ENOMEM;
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SCTP_TCB_UNLOCK(stcb);
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return (NULL);
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}
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n_inp = (struct sctp_inpcb *)newso->so_pcb;
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SOCK_LOCK(head);
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SCTP_INP_WLOCK(inp);
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SCTP_INP_WLOCK(n_inp);
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n_inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
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SCTP_PCB_FLAGS_CONNECTED |
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SCTP_PCB_FLAGS_IN_TCPPOOL | /* Turn on Blocking IO */
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(SCTP_PCB_COPY_FLAGS & inp->sctp_flags));
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n_inp->sctp_features = inp->sctp_features;
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n_inp->sctp_frag_point = inp->sctp_frag_point;
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n_inp->partial_delivery_point = inp->partial_delivery_point;
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n_inp->sctp_context = inp->sctp_context;
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n_inp->inp_starting_point_for_iterator = NULL;
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/* copy in the authentication parameters from the original endpoint */
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if (n_inp->sctp_ep.local_hmacs)
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sctp_free_hmaclist(n_inp->sctp_ep.local_hmacs);
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n_inp->sctp_ep.local_hmacs =
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sctp_copy_hmaclist(inp->sctp_ep.local_hmacs);
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if (n_inp->sctp_ep.local_auth_chunks)
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sctp_free_chunklist(n_inp->sctp_ep.local_auth_chunks);
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n_inp->sctp_ep.local_auth_chunks =
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sctp_copy_chunklist(inp->sctp_ep.local_auth_chunks);
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(void)sctp_copy_skeylist(&inp->sctp_ep.shared_keys,
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&n_inp->sctp_ep.shared_keys);
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n_inp->sctp_socket = newso;
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if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE)) {
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sctp_feature_off(n_inp, SCTP_PCB_FLAGS_AUTOCLOSE);
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n_inp->sctp_ep.auto_close_time = 0;
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sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, n_inp, stcb, NULL,
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SCTP_FROM_SCTP_PEELOFF + SCTP_LOC_1);
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}
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/* Turn off any non-blocking semantic. */
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SCTP_CLEAR_SO_NBIO(newso);
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newso->so_state |= SS_ISCONNECTED;
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/* We remove it right away */
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#ifdef SCTP_LOCK_LOGGING
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sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
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#endif
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TAILQ_REMOVE(&head->so_comp, newso, so_list);
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head->so_qlen--;
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SOCK_UNLOCK(head);
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/*
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* Now we must move it from one hash table to another and get the
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* stcb in the right place.
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*/
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SCTP_INP_WUNLOCK(n_inp);
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SCTP_INP_WUNLOCK(inp);
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sctp_move_pcb_and_assoc(inp, n_inp, stcb);
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/*
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* And now the final hack. We move data in the pending side i.e.
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* head to the new socket buffer. Let the GRUBBING begin :-0
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*/
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sctp_pull_off_control_to_new_inp(inp, n_inp, stcb, M_WAITOK);
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SCTP_TCB_UNLOCK(stcb);
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return (newso);
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}
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