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https://github.com/albfan/miraclecast.git
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051b584746
This initial commit contains the main "miracled" daemon that does link-management and peer-discovery/control. The "miraclectl" tool can be used to control this daemon during runtime. Note that this implementation is still missing a lot of stuff. All it currently does is provide link-management and basic peer-discovery. Following commits will hook everything else up. The actual Miracast/Wifi-Display related runtime control is not being worked on, yet. Feel free to use the proof-of-concept from the OpenWFD repository. The MiracleCast implementation will not get any such functionality unless the basic link-management is properly working. Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
159 lines
3.2 KiB
C
159 lines
3.2 KiB
C
/*
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* MiracleCast - Wifi-Display/Miracast Implementation
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*
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* Copyright (c) 2013-2014 David Herrmann <dh.herrmann@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#define LOG_SUBSYSTEM "peer"
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#include <errno.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <systemd/sd-bus.h>
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#include "miracled.h"
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#include "miracled-wifi.h"
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#include "shl_log.h"
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static int peer_new(struct link *l, struct peer **out)
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{
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unsigned int id;
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size_t hash = 0;
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char *name;
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struct peer *p;
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int r;
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if (!l)
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return log_EINVAL();
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id = ++l->m->peer_ids;
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r = peer_make_name(id, &name);
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if (r < 0)
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return r;
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if (shl_htable_lookup_str(&l->m->peers, name, &hash, NULL)) {
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free(name);
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return -EALREADY;
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}
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log_debug("new peer: %s", name);
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p = calloc(1, sizeof(*p));
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if (!p) {
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free(name);
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return log_ENOMEM();
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}
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p->l = l;
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p->id = id;
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p->name = name;
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r = shl_htable_insert_str(&l->m->peers, &p->name, &hash);
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if (r < 0) {
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log_vERR(r);
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goto error;
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}
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++l->m->peer_cnt;
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shl_dlist_link(&l->peers, &p->list);
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log_info("new peer: %s@%s", p->name, l->name);
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if (out)
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*out = p;
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return 0;
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error:
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peer_free(p);
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return r;
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}
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int peer_new_wifi(struct link *l, struct wifi_dev *d, struct peer **out)
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{
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int r;
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struct peer *p;
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r = peer_new(l, &p);
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if (r < 0)
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return r;
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p->d = d;
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wifi_dev_set_data(p->d, p);
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if (out)
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*out = p;
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return 0;
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}
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void peer_free(struct peer *p)
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{
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if (!p)
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return;
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log_debug("free peer: %s", p->name);
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if (shl_htable_remove_str(&p->l->m->peers, p->name, NULL, NULL)) {
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log_info("remove managed peer: %s@%s", p->name, p->l->name);
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--p->l->m->peer_cnt;
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shl_dlist_unlink(&p->list);
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}
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wifi_dev_set_data(p->d, NULL);
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free(p->name);
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free(p);
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}
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void peer_process_wifi(struct peer *p, struct wifi_event *ev)
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{
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if (!p || !p->d)
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return;
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switch (ev->type) {
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case WIFI_DEV_PROVISION:
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break;
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case WIFI_DEV_CONNECT:
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break;
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case WIFI_DEV_DISCONNECT:
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break;
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default:
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log_debug("unhandled WIFI event: %u", ev->type);
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break;
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}
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}
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int peer_make_name(unsigned int id, char **out)
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{
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char buf[64] = { };
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char *name;
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if (!out)
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return 0;
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snprintf(buf, sizeof(buf) - 1, "%u", id);
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name = sd_bus_label_escape(buf);
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if (!name)
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return log_ENOMEM();
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*out = name;
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return 0;
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}
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