1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
3 * LADI Session Handler (ladish)
5 * Copyright (C) 2011,2012 Nedko Arnaudov <nedko@arnaudov.name>
7 **************************************************************************
8 * This file contains interface to jack session helper functionality
9 **************************************************************************
11 * LADI Session Handler is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * LADI Session Handler is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
23 * or write to the Free Software Foundation, Inc.,
24 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
29 #include "jack_session.h"
30 #include "../common/catdup.h"
32 #include "../proxies/jack_proxy.h"
33 #include "../proxies/conf_proxy.h"
36 struct ladish_js_find_app_client_context
40 const char * client_name
;
43 #define ctx_ptr ((struct ladish_js_find_app_client_context *)context)
46 ladish_js_find_app_client_callback(
48 ladish_graph_handle
UNUSED(graph_handle
),
50 ladish_client_handle client_handle
,
51 const char * client_name
,
52 void ** UNUSED(client_iteration_context_ptr_ptr
))
55 const char * jack_name
;
57 //log_info("checking client '%s'", client_name);
61 return true; /* continue iteration */
64 jack_name
= ladish_client_get_jack_name(client_handle
);
65 if (jack_name
== NULL
)
67 log_error("visible client '%s' in JACK graph without jack client name", client_name
);
69 return true; /* continue iteration */
74 if (!jack_proxy_session_has_callback(jack_name
, &has_callback
))
76 return true; /* continue iteration */
79 //log_info("client '%s' %s session callback", jack_name, has_callback ? "has" : "hasn't");
80 ladish_client_set_js(client_handle
, has_callback
);
84 return true; /* continue iteration */
89 if (!ladish_client_is_js(client_handle
))
91 return true; /* continue iteration */
95 log_info("client '%s' has session callback", jack_name
);
97 if (!ladish_client_is_app(client_handle
, ctx_ptr
->app_uuid
))
99 return true; /* continue iteration */
102 ctx_ptr
->client_name
= jack_name
;
103 return false; /* stop iteration */
110 ladish_js_find_app_client(
113 struct ladish_js_find_app_client_context ctx
;
115 ctx
.client_name
= NULL
;
118 uuid_copy(ctx
.app_uuid
, app_uuid
);
119 ladish_graph_iterate_nodes(ladish_studio_get_jack_graph(), &ctx
, ladish_js_find_app_client_callback
, NULL
, NULL
);
121 /* app registered the callback after the client activation, try harder */
122 if (ctx
.client_name
== NULL
)
125 ladish_graph_iterate_nodes(ladish_studio_get_jack_graph(), &ctx
, ladish_js_find_app_client_callback
, NULL
, NULL
);
128 return ctx
.client_name
;
131 struct ladish_js_save_app_context
136 const char * commandline
);
138 char * target_dir
; /* the dir supplied as parameter to ladish_js_save_app() */
139 char * temp_dir
; /* temp dir that is passed to jack session notify */
140 char * client_dir
; /* client dir within the temp dir */
143 #define ctx_ptr ((struct ladish_js_save_app_context *)context)
145 void ladish_js_save_app_complete(void * context
, const char * commandline
)
150 if (commandline
== NULL
)
155 log_info("JS app save complete. commandline='%s'", commandline
);
157 if (!conf_get_uint(LADISH_CONF_KEY_DAEMON_JS_SAVE_DELAY
, &delay
))
159 delay
= LADISH_CONF_KEY_DAEMON_JS_SAVE_DELAY_DEFAULT
;
164 log_info("sleeping for %u seconds...", delay
);
168 iret
= rename(ctx_ptr
->client_dir
, ctx_ptr
->target_dir
);
171 log_error("rename('%s' -> '%s') failed. errno = %d (%s)", ctx_ptr
->client_dir
, ctx_ptr
->target_dir
, errno
, strerror(errno
));
176 log_debug("removing temp dir '%s'", ctx_ptr
->temp_dir
);
177 iret
= rmdir(ctx_ptr
->temp_dir
);
180 log_error("rmdir('%s') failed. errno = %d (%s)", ctx_ptr
->temp_dir
, errno
, strerror(errno
));
185 ctx_ptr
->callback(ctx_ptr
->context
, commandline
);
187 free(ctx_ptr
->client_dir
);
188 free(ctx_ptr
->temp_dir
);
189 free(ctx_ptr
->target_dir
);
198 const char * parent_dir
,
199 void * completion_context
,
200 void (* completion_callback
)(
201 void * completion_context
,
202 const char * commandline
))
204 struct ladish_js_save_app_context
* ctx_ptr
;
205 char app_uuid_str
[37];
207 const char * js_client
;
210 js_client
= ladish_js_find_app_client(app_uuid
);
211 if (js_client
== NULL
)
213 log_error("cannot find js app client");
217 ctx_ptr
= malloc(sizeof(struct ladish_js_save_app_context
));
220 log_error("malloc() failed to allocate ladish_js_save_app_context struct");
224 uuid_unparse(app_uuid
, app_uuid_str
);
225 ctx_ptr
->target_dir
= catdup3(parent_dir
, "/", app_uuid_str
);
226 if (ctx_ptr
->target_dir
== NULL
)
228 log_error("strdup3(\"%s\", \"/\", \"%s\") failed for compose js target app dir", parent_dir
, app_uuid_str
);
229 goto fail_free_struct
;
232 log_info("JS target app dir is '%s'", ctx_ptr
->target_dir
);
234 ctx_ptr
->temp_dir
= catdup(ctx_ptr
->target_dir
, ".tmpXXXXXX/");
235 if (ctx_ptr
->temp_dir
== NULL
)
237 log_error("catdup() failed to compose app js temp dir path template");
238 goto fail_free_target_dir
;
241 ofs
= strlen(ctx_ptr
->temp_dir
) - 1;
242 ctx_ptr
->temp_dir
[ofs
] = 0; /* mkdtemp wants last chars six chars to be XXXXXX */
244 if (mkdtemp(ctx_ptr
->temp_dir
) == NULL
)
246 log_error("mkdtemp('%s') failed. errno = %d (%s)", ctx_ptr
->temp_dir
, errno
, strerror(errno
));
247 goto fail_free_temp_dir
;
250 ctx_ptr
->temp_dir
[ofs
] = '/'; /* jack session wants last char to be / */
252 log_info("JS temp app dir is '%s'", ctx_ptr
->temp_dir
);
254 ctx_ptr
->client_dir
= catdup(ctx_ptr
->temp_dir
, js_client
);
255 if (ctx_ptr
->client_dir
== NULL
)
257 log_error("catdup3() failed to compose js client dir path");
258 goto fail_rm_temp_dir
;
261 ctx_ptr
->callback
= completion_callback
;
262 ctx_ptr
->context
= completion_context
;
264 if (!jack_proxy_session_save_one(true, js_client
, ctx_ptr
->temp_dir
, ctx_ptr
, ladish_js_save_app_complete
))
266 log_error("jack session failed to initiate save of '%s' app state to '%s'", js_client
, ctx_ptr
->temp_dir
);
267 goto fail_rm_temp_dir
;
270 log_info("JS app save initiated");
275 ret
= rmdir(ctx_ptr
->temp_dir
);
278 log_error("rmdir('%s') failed. errno = %d (%s)", ctx_ptr
->temp_dir
, errno
, strerror(errno
));
280 //fail_free_client_dir:
281 free(ctx_ptr
->client_dir
);
283 free(ctx_ptr
->temp_dir
);
284 fail_free_target_dir
:
285 free(ctx_ptr
->target_dir
);