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Diffstat (limited to 'src/afm-binding.c')
| -rw-r--r-- | src/afm-binding.c | 487 |
1 files changed, 487 insertions, 0 deletions
diff --git a/src/afm-binding.c b/src/afm-binding.c new file mode 100644 index 0000000..b111f09 --- /dev/null +++ b/src/afm-binding.c @@ -0,0 +1,487 @@ +/* + * Copyright (C) 2015, 2016, 2017 IoT.bzh + * Author "Fulup Ar Foll" + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define _GNU_SOURCE /* See feature_test_macros(7) */ +#include <stdio.h> +#include <string.h> +#include <assert.h> + +#include <json-c/json.h> + +#define AFB_BINDING_VERSION 2 +#include <afb/afb-binding.h> + +#include "verbose.h" +#include "utils-systemd.h" +#include "afm.h" +#include "afm-udb.h" +#include "afm-urun.h" +#include "wgt-info.h" +#include "wgtpkg-install.h" +#include "wgtpkg-uninstall.h" +#include "wrap-json.h" + +static const char _added_[] = "added"; +static const char _a_l_c_[] = "application-list-changed"; +static const char _detail_[] = "detail"; +static const char _id_[] = "id"; +static const char _install_[] = "install"; +static const char _not_found_[] = "not-found"; +static const char _once_[] = "once"; +static const char _pause_[] = "pause"; +static const char _resume_[] = "resume"; +static const char _runid_[] = "runid"; +static const char _runnables_[] = "runnables"; +static const char _runners_[] = "runners"; +static const char _start_[] = "start"; +static const char _state_[] = "state"; +static const char _terminate_[] = "terminate"; +static const char _uninstall_[] = "uninstall"; + +static const char *rootdir = FWK_APP_DIR; +static struct afb_event applist_changed_event; +static struct afm_udb *afudb; +static struct json_object *json_true; + +static void do_reloads() +{ + /* enforce daemon reload */ + systemd_daemon_reload(0); + systemd_unit_restart_name(0, "sockets.target"); +} + +static void bad_request(struct afb_req req) +{ + afb_req_fail(req, "bad-request", NULL); +} + +static void not_found(struct afb_req req) +{ + afb_req_fail(req, _not_found_, NULL); +} + +static void cant_start(struct afb_req req) +{ + afb_req_fail(req, "cannot-start", NULL); +} + +/* + * Broadcast the event "application-list-changed". + * This event is sent was the event "changed" is received from dbus. + */ +static void application_list_changed(const char *operation, const char *data) +{ + struct json_object *e = NULL; + wrap_json_pack(&e, "{ss ss}", "operation", operation, "data", data); + afb_event_broadcast(applist_changed_event, e); +} + +/* + * retrieves the 'runid' in parameters received with the + * request 'req' for the 'method'. + * + * Returns 1 in case of success. + * Otherwise, if the 'runid' can't be retrived, an error stating + * the bad request is replied for 'req' and 0 is returned. + */ +static int onrunid(struct afb_req req, const char *method, int *runid) +{ + struct json_object *json; + + json = afb_req_json(req); + if (wrap_json_unpack(json, "s", runid) + || wrap_json_unpack(json, "{ss}", "runid", runid)) { + INFO("bad request method %s: %s", method, + json_object_to_json_string(json)); + bad_request(req); + return 0; + } + + INFO("method %s called for %d", method, *runid); + return 1; +} + +/* + * Sends the reply 'resp' to the request 'req' if 'resp' is not NULLzero. + * Otherwise, when 'resp' is NULL replies the error string 'errstr'. + */ +static void reply(struct afb_req req, struct json_object *resp, const char *errstr) +{ + if (!resp) + afb_req_fail(req, errstr, NULL); + else + afb_req_success(req, resp, NULL); +} + +/* + * Sends the reply "true" to the request 'req' if 'status' is zero. + * Otherwise, when 'status' is not zero replies the error string 'errstr'. + */ +static void reply_status(struct afb_req req, int status, const char *errstr) +{ + reply(req, status ? NULL : json_object_get(json_true), errstr); +} + +/* + * On query "runnables" + */ +static void runnables(struct afb_req req) +{ + struct json_object *resp; + INFO("method runnables called"); + resp = afm_udb_applications_public(afudb); + afb_req_success(req, resp, NULL); +} + +/* + * On query "detail" + */ +static void detail(struct afb_req req) +{ + const char *appid; + struct json_object *resp, *json; + + /* scan the request */ + json = afb_req_json(req); + if (wrap_json_unpack(json, "s", &appid) + || wrap_json_unpack(json, "{ss}", _id_, &appid)) { + bad_request(req); + return; + } + + /* wants details for appid */ + INFO("method detail called for %s", appid); + resp = afm_udb_get_application_public(afudb, appid); + if (resp) + afb_req_success(req, resp, NULL); + else + not_found(req); +} + +/* + * On query "start" + */ +static void start(struct afb_req req) +{ + const char *appid; + struct json_object *appli, *resp, *json; + int runid; + + /* scan the request */ + json = afb_req_json(req); + if (wrap_json_unpack(json, "s", &appid) + || wrap_json_unpack(json, "{ss}", _id_, &appid)) { + bad_request(req); + return; + } + + /* get the application */ + INFO("method start called for %s", appid); + appli = afm_udb_get_application_private(afudb, appid); + if (appli == NULL) { + not_found(req); + return; + } + + /* launch the application */ + runid = afm_urun_start(appli); + if (runid <= 0) { + cant_start(req); + return; + } + + /* returns */ + resp = NULL; + wrap_json_pack(&resp, "{si}", _runid_, runid); + afb_req_success(req, resp, NULL); +} + +/* + * On query "once" + */ +static void once(struct afb_req req) +{ + const char *appid; + struct json_object *appli, *resp, *json; + int runid; + + /* scan the request */ + json = afb_req_json(req); + if (wrap_json_unpack(json, "s", &appid) + || wrap_json_unpack(json, "{ss}", _id_, &appid)) { + bad_request(req); + return; + } + + /* get the application */ + INFO("method once called for %s", appid); + appli = afm_udb_get_application_private(afudb, appid); + if (appli == NULL) { + not_found(req); + return; + } + + /* launch the application */ + runid = afm_urun_once(appli); + if (runid <= 0) { + cant_start(req); + return; + } + + /* returns the state */ + resp = afm_urun_state(afudb, runid); + afb_req_success(req, resp, NULL); +} + +/* + * On query "pause" + */ +static void pause(struct afb_req req) +{ + int runid, status; + if (onrunid(req, "pause", &runid)) { + status = afm_urun_pause(runid); + reply_status(req, status, _not_found_); + } +} + +/* + * On query "resume" from 'smsg' with parameters of 'obj'. + */ +static void resume(struct afb_req req) +{ + int runid, status; + if (onrunid(req, "resume", &runid)) { + status = afm_urun_resume(runid); + reply_status(req, status, _not_found_); + } +} + +/* + * On query "terminate" + */ +static void terminate(struct afb_req req) +{ + int runid, status; + if (onrunid(req, "terminate", &runid)) { + status = afm_urun_terminate(runid); + reply_status(req, status, _not_found_); + } +} + +/* + * On query "runners" + */ +static void runners(struct afb_req req) +{ + struct json_object *resp; + INFO("method runners called"); + resp = afm_urun_list(afudb); + afb_req_success(req, resp, NULL); +} + +/* + * On query "state" + */ +static void state(struct afb_req req) +{ + int runid; + struct json_object *resp; + if (onrunid(req, "state", &runid)) { + resp = afm_urun_state(afudb, runid); + reply(req, resp, _not_found_); + } +} + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +static void install(struct afb_req req) +{ + const char *wgtfile; + const char *root; + int force; + int reload; + struct wgt_info *ifo; + struct json_object *json; + struct json_object *resp; + + /* default settings */ + root = rootdir; + force = 0; + reload = 1; + + /* scan the request */ + json = afb_req_json(req); + if (wrap_json_unpack(json, "s", &wgtfile) + || wrap_json_unpack(json, "{ss s?s s?b s?b}", + "widget", &wgtfile, + "root", &root, + "force", &force, + "reload", &reload)) { + return bad_request(req); + } + + /* install the widget */ + ifo = install_widget(wgtfile, root, force); + if (ifo == NULL) + afb_req_fail_f(req, "failed", "installation failed: %m"); + else { + /* reload if needed */ + if (reload) + do_reloads(); + + /* build the response */ + wrap_json_pack(&resp, "{ss}", _added_, wgt_info_desc(ifo)->idaver); + afb_req_success(req, resp, NULL); + application_list_changed(_install_, wgt_info_desc(ifo)->idaver); + + /* clean-up */ + wgt_info_unref(ifo); + } +} + +static void uninstall(struct afb_req req) +{ + const char *idaver; + const char *root; + struct json_object *json; + int rc; + + /* default settings */ + root = rootdir; + + /* scan the request */ + json = afb_req_json(req); + if (wrap_json_unpack(json, "s", &idaver) + || wrap_json_unpack(json, "{ss s?s}", + _id_, &idaver, + "root", &root)) { + return bad_request(req); + } + + /* install the widget */ + rc = uninstall_widget(idaver, root); + if (rc) + afb_req_fail_f(req, "failed", "uninstallation failed: %m"); + else { + afb_req_success(req, NULL, NULL); + application_list_changed(_uninstall_, idaver); + } +} + +static int init() +{ + /* init database */ + afudb = afm_udb_create(1, 1, "afm-appli-"); + if (!afudb) { + ERROR("afm_udb_create failed"); + return -1; + } + + /* set the systemd's buses */ + systemd_set_bus(0, afb_daemon_get_system_bus()); + systemd_set_bus(1, afb_daemon_get_user_bus()); + + /* create TRUE */ + json_true = json_object_new_boolean(1); + + /* create the event */ + applist_changed_event = afb_daemon_make_event(_a_l_c_); + return -!afb_event_is_valid(applist_changed_event); +} + +static const struct afb_auth + auth_install = { + .type = afb_auth_Permission, + .text = "urn:AGL:permission:afm:system:widget:install" + }, + auth_uninstall = { + .type = afb_auth_Permission, + .text = "urn:AGL:permission:afm:system:widget:uninstall" + } +; + +static const struct afb_verb_v2 verbs[] = +{ + {_runnables_, runnables, NULL, "Get list of runnable applications", AFB_SESSION_CHECK_V2 }, + {_detail_ , detail, NULL, "Get the details for one application", AFB_SESSION_CHECK_V2 }, + {_start_ , start, NULL, "Start an application", AFB_SESSION_CHECK_V2 }, + {_once_ , once, NULL, "Start once an application", AFB_SESSION_CHECK_V2 }, + {_terminate_, terminate, NULL, "Terminate a running application", AFB_SESSION_CHECK_V2 }, + {_pause_ , pause, NULL, "Pause a running application", AFB_SESSION_CHECK_V2 }, + {_resume_ , resume, NULL, "Resume a paused application", AFB_SESSION_CHECK_V2 }, + {_runners_ , runners, NULL, "Get the list of running applications", AFB_SESSION_CHECK_V2 }, + {_state_ , state, NULL, "Get the state of a running application", AFB_SESSION_CHECK_V2 }, + {_install_ , install, NULL, "Install an application using a widget file", AFB_SESSION_CHECK_V2 }, + {_uninstall_, uninstall, NULL, "Uninstall an application", AFB_SESSION_CHECK_V2 }, + { NULL, NULL, NULL, NULL, 0 } +}; + +const struct afb_binding_v2 afbBindingV2 = { + .api = "afm-main", + .specification = NULL, + .info = "Application Framework Master Service", + .verbs = verbs, + .preinit = NULL, + .init = init, + .onevent = NULL, + .noconcurrency = 1 /* relies on binder for serialisation of requests */ +}; + |