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https://github.com/servalproject/serval-dna.git
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86 lines
3.1 KiB
C
86 lines
3.1 KiB
C
/*
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Copyright (C) 2010-2012 Paul Gardner-Stephen, Serval Project.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (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, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "serval.h"
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int mdp_abstract_socket=-1;
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int mdp_named_socket=-1;
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int overlay_mdp_setup_sockets()
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{
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struct sockaddr_un name;
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int len;
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name.sun_family = AF_UNIX;
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/* Abstract name space unix sockets is a special Linux thing, which is
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convenient for us because Android is Linux, but does not have a shared
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writable path that is on a UFS partition, so we cannot use traditional
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named unix domain sockets. So the abstract name space gives us a solution. */
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name.sun_path[0]=0;
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/* XXX The 100 should be replaced with the actual maximum allowed.
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Apparently POSIX requires it to be at least 100, but I would still feel
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more comfortable with using the appropriate constant. */
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snprintf(&name.sun_path[1],100,"org.servalproject.mesh.overlay.mdp");
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len = 1+strlen(&name.sun_path[1]) + sizeof(name.sun_family);
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#ifndef HAVE_LINUX_IF_H
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/* Abstrack name space (i.e., non-file represented) unix domain sockets are a
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linux-only thing. */
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mdp_abstract_socket = -1;
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#else
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mdp_abstract_socket = socket(AF_UNIX, SOCK_STREAM, 0);
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if (mdp_abstract_socket>-1) {
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int dud=0;
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int r=bind(mdp_abstract_socket, (struct sockaddr *)&name, len);
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if (r) { dud=1; r=0; WHY("bind() of abstract name space socket failed (not an error on non-linux systems"); }
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r=listen(mdp_abstract_socket,100); // allow a lot of queued up MDP frames
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if (r) { dud++; WHY("listen() failed"); }
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if (dud) {
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close(mdp_abstract_socket);
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mdp_abstract_socket=-1;
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WHY("Could not open abstract name-space socket (only a problem on Linux).");
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}
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}
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#endif
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char *instancepath=serval_instancepath();
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snprintf(&name.sun_path[0],100,"%s/mdp.socket",instancepath);
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len = 0+strlen(&name.sun_path[0]) + sizeof(name.sun_family);
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mdp_named_socket = socket(AF_UNIX, SOCK_STREAM, 0);
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if (mdp_named_socket>-1) {
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int dud=0;
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int r=bind(mdp_named_socket, (struct sockaddr *)&name, len);
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if (r) { dud=1; r=0; WHY("bind() of named unix domain socket failed"); }
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r=listen(mdp_named_socket,100); // allow a lot of queued up MDP frames
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if (r) { dud++; WHY("listen() failed"); }
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if (dud) {
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close(mdp_named_socket);
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mdp_named_socket=-1;
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WHY("Could not open named unix domain socket.");
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}
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}
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return 0;
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}
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int overlay_saw_mdp_frame(int interface,overlay_frame *f,long long now)
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{
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return WHY("Not implemented");
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}
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