124 lines
3.1 KiB
C
124 lines
3.1 KiB
C
/*
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* API - Common functions for control/query API
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*
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* Copyright (C) 2013 Adam Sutton
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*
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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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*
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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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*
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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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#include "tvheadend.h"
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#include "api.h"
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#include "access.h"
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#include <string.h>
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typedef struct api_link {
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const api_hook_t *hook;
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RB_ENTRY(api_link) link;
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} api_link_t;
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RB_HEAD(,api_link) api_hook_tree;
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static int ah_cmp
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( api_link_t *a, api_link_t *b )
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{
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return strcmp(a->hook->ah_subsystem, b->hook->ah_subsystem);
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}
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void
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api_register ( const api_hook_t *hook )
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{
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static api_link_t *t, *skel = NULL;
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if (!skel)
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skel = calloc(1, sizeof(api_link_t));
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skel->hook = hook;
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t = RB_INSERT_SORTED(&api_hook_tree, skel, link, ah_cmp);
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if (t)
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tvherror("api", "trying to re-register subsystem");
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else
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skel = NULL;
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}
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void
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api_register_all ( const api_hook_t *hooks )
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{
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while (hooks->ah_subsystem) {
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api_register(hooks);
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hooks++;
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}
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}
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int
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api_exec ( const char *subsystem, htsmsg_t *args, htsmsg_t **resp )
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{
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api_hook_t h;
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api_link_t *ah, skel;
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const char *op;
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/* Args and response must be set */
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if (!args || !resp)
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return EINVAL;
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// Note: there is no locking while checking the hook tree, its assumed
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// this is all setup during init (if this changes the code will
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// need updating)
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h.ah_subsystem = subsystem;
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skel.hook = &h;
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ah = RB_FIND(&api_hook_tree, &skel, link, ah_cmp);
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if (!ah) {
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tvhwarn("api", "failed to find subsystem [%s]", subsystem);
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return ENOSYS; // TODO: is this really the right error code?
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}
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/* Extract method */
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op = htsmsg_get_str(args, "method");
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if (!op)
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op = htsmsg_get_str(args, "op");
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// Note: this is not required (so no final validation)
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/* Execute */
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return ah->hook->ah_callback(ah->hook->ah_opaque, op, args, resp);
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}
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static int
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api_serverinfo
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( void *opaque, const char *op, htsmsg_t *args, htsmsg_t **resp )
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{
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*resp = htsmsg_create_map();
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htsmsg_add_str(*resp, "sw_version", tvheadend_version);
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htsmsg_add_u32(*resp, "api_version", TVH_API_VERSION);
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htsmsg_add_str(*resp, "name", "Tvheadend");
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if (tvheadend_webroot)
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htsmsg_add_str(*resp, "webroot", tvheadend_webroot);
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htsmsg_add_msg(*resp, "capabilities", tvheadend_capabilities_list(1));
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return 0;
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}
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void api_init ( void )
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{
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static api_hook_t h[] = {
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{ "serverinfo", ACCESS_ANONYMOUS, api_serverinfo, NULL },
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{ NULL, 0, NULL, NULL }
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};
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api_register_all(h);
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/* Subsystems */
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api_idnode_init();
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api_input_init();
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api_mpegts_init();
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api_service_init();
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api_channel_init();
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api_epg_init();
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}
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