diff options
| -rw-r--r-- | Controller-afb/CMakeLists.txt | 81 | ||||
| -rw-r--r-- | Controller-afb/README.md | 344 | ||||
| -rwxr-xr-x | Controller-afb/a.out | bin | 0 -> 12552 bytes | |||
| -rw-r--r-- | Controller-afb/ctl-apidef.h | 115 | ||||
| -rw-r--r-- | Controller-afb/ctl-apidef.json | 250 | ||||
| -rw-r--r-- | Controller-afb/ctl-binding.c | 68 | ||||
| -rw-r--r-- | Controller-afb/ctl-binding.h | 146 | ||||
| -rw-r--r-- | Controller-afb/ctl-dispatch.c | 667 | ||||
| -rw-r--r-- | Controller-afb/ctl-lua.c | 1040 | ||||
| -rw-r--r-- | Controller-afb/ctl-plugin-sample.c | 134 | ||||
| -rw-r--r-- | Controller-afb/ctl-policy.c | 221 | ||||
| -rw-r--r-- | Controller-afb/ctl-timer.c | 101 |
12 files changed, 3167 insertions, 0 deletions
diff --git a/Controller-afb/CMakeLists.txt b/Controller-afb/CMakeLists.txt new file mode 100644 index 0000000..c7602f8 --- /dev/null +++ b/Controller-afb/CMakeLists.txt @@ -0,0 +1,81 @@ +########################################################################### +# Copyright 2015, 2016, 2017 IoT.bzh +# +# author: Fulup Ar Foll <fulup@iot.bzh> +# +# 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. +########################################################################### + +ADD_COMPILE_OPTIONS(-DCONTROL_ONLOAD_PROFILE="onload-default-profile") + +ADD_COMPILE_OPTIONS(-DCONTROL_DOSCRIPT_PRE="doscript") +ADD_COMPILE_OPTIONS(-DCONTROL_CONFIG_PRE="onload") +ADD_COMPILE_OPTIONS(-DCONTROL_CONFIG_POST="control") +ADD_COMPILE_OPTIONS(-DCONTROL_CONFIG_PATH="${CMAKE_SOURCE_DIR}/conf.d/project/config.d:${CMAKE_INSTALL_PREFIX}/controller/config.d") +ADD_COMPILE_OPTIONS(-DCTL_PLUGIN_MAGIC=2468013579) +ADD_COMPILE_OPTIONS(-DCONTROL_PLUGIN_PATH="${CMAKE_BINARY_DIR}:${CMAKE_INSTALL_PREFIX}/controller-plugins:/usr/lib/afb/controller-plugins/ctlplug") + +# Include LUA only when requested +if(CONTROL_SUPPORT_LUA) + message(STATUS "Notice: LUA Controler Support Selected") + set(CTL_LUA_SOURCE ctl-lua.c) + ADD_COMPILE_OPTIONS(-DCONTROL_SUPPORT_LUA) + ADD_COMPILE_OPTIONS(-DCONTROL_LUA_EVENT="luaevt") + ADD_COMPILE_OPTIONS(-DCONTROL_LUA_PATH="${CMAKE_SOURCE_DIR}/conf.d/project/lua.d:${CMAKE_INSTALL_PREFIX}/controller-plugins/ctl-lua.d") +else(CONTROL_SUPPORT_LUA) + message(STATUS "Warning: LUA Without Support ") +endif(CONTROL_SUPPORT_LUA) + +# Add target to project dependency list +PROJECT_TARGET_ADD(control-afb) + + # Define project Targets + ADD_LIBRARY(${TARGET_NAME} MODULE ctl-binding.c ctl-timer.c ctl-dispatch.c ${CTL_LUA_SOURCE}) + + SET_OPENAPI_FILENAME("ctl-apidef") + # Binder exposes a unique public entry point + SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES + PREFIX "afb-" + LABELS "BINDINGV2" + LINK_FLAGS ${BINDINGS_LINK_FLAG} + OUTPUT_NAME ${TARGET_NAME} + ) + + # Library dependencies (include updates automatically) + TARGET_LINK_LIBRARIES(${TARGET_NAME} + audio-common + ${link_libraries} + ) + + +PROJECT_TARGET_ADD(audio-plugin-sample) + + # Define targets + ADD_LIBRARY(${TARGET_NAME} MODULE ctl-plugin-sample.c) + + # Alsa Plugin properties + SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES + PREFIX ${CTL_PLUGIN_PRE} + SUFFIX ${CTL_PLUGIN_EXT} + OUTPUT_NAME ${TARGET_NAME} + ) + + # Library dependencies (include updates automatically) + TARGET_LINK_LIBRARIES(${TARGET_NAME} + audio-common + ${link_libraries} + ) + + # installation directory + INSTALL(TARGETS ${TARGET_NAME} + LIBRARY DESTINATION ${CMAKE_INSTALL_PREFIX}/controler-plugins) diff --git a/Controller-afb/README.md b/Controller-afb/README.md new file mode 100644 index 0000000..9bab485 --- /dev/null +++ b/Controller-afb/README.md @@ -0,0 +1,344 @@ +Controler AAAA(AGL Advance Audio Controler) and more. +------------------------------------------------------------ + + * Object: Generic Controler to handle Policy,Small Business Logic, Glue in between components, ... + * Status: Release Candidate + * Author: Fulup Ar Foll fulup@iot.bzh + * Date : August-2017 + +## Functionalities: + - Create an application dedicate controller from a JSON config file + - Each controls (eg: navigation, multimedia, ...) is a suite of actions. When all actions succeed control is granted, if one fail control acces is denied. + - Actions can either be: + + Invocation to an other binding API, either internal or external (eg: a policy service, Alsa UCM, ...) + + C routines from a user provider plugin (eg: policy routine, proprietary code, ...) + + Lua script function. Lua provides access to every AGL appfw functionalities and can be extended from C user provided plugins. + +## Installation + - Controler is a native part of AGL Advance Audio Framework but may be used independently with any other service or application binder. + - Dependencies: the only dependencies are audio-common for JSON-WRAP and Filescan-utils capabilities. + - Controler relies on Lua-5.3, when not needed Lua might be removed at compilation time. + +## Config + +Configuration is loaded dynamically during startup time. The controller scans CONTROL_CONFIG_PATH for a file corresponding to pattern +"onload-bindername-xxxxx.json". When controller runs within AAAA binder it searches for "onload-audio-xxxx.json". First file found in the path the loaded +any other files corresponding to the same pather are ignored and only generate a warning. + +Each bloc in the configuration file are defined with + * label: must be provided is used either for debugging or as input for the action (eg: signal name, control name, ...) + * info: optional used for documentation purpose only + +Note by default controller config search path is defined at compilation time, but path might be overloaded with CONTROL_CONFIG_PATH +environment variable. Setenv 'CONTROL_ONLOAD_PROFILE'=xxxx to overload 'onload-default-profile' initialisation sequence. + +### Config is organised in 4 sections: + + * metadata + * onload defines the set of action to be executed at startup time + * control defines the set of controls with corresponding actions + * event define the set of actions to be executed when receiving a given signal + +### Metadata + +As today matadata is only used for documentation purpose. + * label + version mandatory + * info optional + +### OnLoad section + +Defines startup time configuration. Onload may provide multiple initialisation profiles, each with a different label. + * label is mandatory. Label is used to select onload profile at initialisation through DispatchOneOnLoad("onload-label") API; + * info is optional + * plugin provides optional unique plugin name. Plugin should follow "onload-bindername-xxxxx.ctlso" patern + and are search into CONTROL_PLUGIN_PATH. When defined controller will execute user provided function context=CTLP_ONLOAD(label,version,info). + The context returned by this routine is provided back to any C routines call later by the controller. Note that Lua2C function + are prefix in Lua script with plugin label (eg: MyPlug: in following config sample) + * lua2c list of Lua commands shipped with provided plugin. + * require list of binding that should be initialised before the controller starts. Note that some listed requirer binding might be absent, + nevertheless any present binding from this list will be started before controller binding, missing ones generate a warning. + * action the list of action to execute during loadtime. Any failure in action will prevent controller binding from starting. + +### Control section + +Defines a list of controls that are accessible through (api="control", verb="request", control="control-label"). + + * label mandatory + * info optional + * permissions Cynara needed privileges to request this control (same as AppFw-V2) + * action the list of actions + +### Event section + +Defines a list of actions to be executed on event reception. Even can do anything a controller can (change state, +send back signal, ...) eg: if a controller subscribes to vehicule speed, then speed-event may ajust master-volume to speed. + + * label mandatory + * info optional + * action the list of actions + +### Actions Categories + +Controler support tree categories of actions. Each action return a status status where 0=success and 1=failure. + * AppFw API, Provides a generic model to request other bindings. Requested binding can be local (eg: ALSA/UCM) or + external (eg: vehicle signalling). + * api provides requested binding API name + * verb provides verb to requested binding + * args optionally provides a jsonc object for targeted binding API. Note that 'args' are statically defined + in JSON configuration file. Controler client may also provided its own arguments from the query list. Targeted + binding receives both arguments defined in the config file and the argument provided by controller client. + * C-API, when defined in the onload section, the plugin may provided C native API with CTLP-CAPI(apiname, label, args, query, context). + Plugin may also create Lua command with CTLP-Lua2C(LuaFuncName, label, args, query, context). Where args+query are JSONC object + and context the value return from CTLP_ONLOAD function. Any missing value is set to NULL. + * Lua-API, when compiled with Lua option, the controller support action defined directly in Lua script. During "onload" phase the + controller search in CONTROL_Lua_PATH file with pattern "onload-bindername-xxxx.lua". Any file corresponding to this pattern + is automatically loaded. Any function defined in those Lua script can be called through a controller action. Lua functions receive + three parameters (label, args, query). + +Note: Lua added functions systematically prefix. AGL standard AppFw functions are prefixed with AGL: (eg: AGL:notice(), AGL_success(), ...). +User Lua functions added though the plugin and CTLP_Lua2C are prefix with plugin label (eg: MyPlug:HelloWorld1). + +### Avaliable Application Framework Commands + +Each Lua AppFw commands should be prefixed by AFB: + + * AFB:notice ("format", arg1,... argn) LUA table are print directly as json string with '%s'. + AFB:error, AFB:warning, AFB:info, AFB:debug work on the same model. Printed message are limited to 512 characters. + + * AFB:service ('API', 'VERB', {query}, "Lua_Callback_Name", {context}) asynchronous call to an other binding. When empty query/context should be set to '{}' + and not to 'nil'. When 'nil' Lua does not send 'NULL' value but remove arguments to calling stack. WARNING:"Callback" + is the name of the callback as a string and not a pointer to the callback. (If someone as a solution to fix this, please + let me known). Callback is call as LUA "function Alsa_Get_Hal_CB (error, result, context)" where: + * error is a Boolean + * result is the full answer from AppFw (do not forget to extract response) + * context is a copy of the Lua table pas as argument (warning it's a copy not a pointer to original table) + + * error,result=AFB:servsync('API', 'VERB', {query}) Save as previous but for synchronous call. Note that Lua accept multiple + return. AFB:servsync return both the error message and the response as a Lua table. Like for AFB:service user should not + forget to extract response from result. + + * AFB:success(request, response) request is the opaque handle pass when Lua is called from (api="control", verb="docall"). + Response is a Lua table that will be return to client. + + * AFB:fail(request, response) same as for success. Note that LUA generate automatically the error code from Lua function name. + The response is tranformed to a json string before being return to client. + + * EventHandle=AFB:evtmake("MyEventName") Create an event and return the handle as an opaque handle. Note that due to a limitation + of json_object this opaque handle cannot be passed as argument in a callback context. + + * AFB:subscribe(request, MyEventHandle) Subscribe a given client to previously created event. + + * AFB:evtpush (MyEventHandle, MyEventData) Push an event to every subscribed client. MyEventData is a Lua table that will be + send as a json object to corresponding clients. + + * timerHandle=AFB:timerset (MyTimer, "Timer_Test_CB", context) Initialise a timer from MyTimer Lua table. This table should contend 3 elements: + MyTimer={[l"abel"]="MyTimerName", ["delay"]=timeoutInMs, ["count"]=nBOfCycles}. Note that is count==0 then timer is cycle + infinitively. Context is a standard Lua table. This function return an opaque handle to be use to further control the timer. + + * AFB:timerclear(timerHandle) Kill an existing timer. Return an error when timer does not exit. + + * MyTimer=AFB:timerget(timerHandle) Return Label, Delay and Count of an active timer. Return an error when timerHandle does not + point on an active timer. + +Note: Except for function call during binding initialisation period. Lua call are protected and should return clean message + even when improperly used. If you find bug please report. + +### Adding Lua command from User Plugin + +User Plugin is optional and may provide either native C-action accessible directly from controller actions as defined in +JSON config file, or alternatively may provide at set of Lua commands usable inside any script (onload, control,event). A simple +plugin that provide both natice C API and Lua commands is provided as example (see ctl-plugin-sample.c). Technically a +plugin is a simple sharelibrary and any code fitting in sharelib might be used as a plugin. Developer should nevertheless +not forget that except when no-concurrency flag was at binding construction time, any binding should to be thread safe. + +A plugin must be declare with CTLP_REGISTER("MyCtlSamplePlugin"). This entry point defines a special structure that is check +at plugin load time by the controller. Then you have an optional init routine declare with CTLP_ONLOAD(label, version, info). +This init routine receives controller onload profile as selected by DispatchOnLoad("profile"). The init routine may create +a plugin context that is later one presented to every plugin API this for both LUA and native C ones. Then each: + + * C API declare with CTLP_CAPI (MyCFunction, label, argsJ, queryJ, context) {your code}. Where: + * MyFunction is your function + * Label is a string containing the name of your function + * ArgsJ a json_object containing the argument attach the this control in JSON config file. + * context your C context as return from CTLP_ONLOAD + + * Lua API declarewith TLP_LUA2C (MyLuaCFunction, label, argsJ, context) {your code}. Where + * MyLuaCFunction is both the name of your C function and Lua command + * Label your function name as a string + * Args the arguments passed this time from Lua script and not from Json config file. + * Query is not provided as LuaC function are called from a script and not directly from controller action list. + +Warning: Lua samples use with controller enforce strict mode. As a result every variables should be declare either as +local or as global. Unfortunately "luac" is not smart enough to handle strict mode at build time and errors only appear +at run time. Because of this strict mode every global variables (which include functions) should be prefix by '_'. +Note that LUA require an initialisation value for every variables and declaring something like "local myvar" wont +allocate "myvar" + +### Debugging Facilities + +Controler Lua script are check for syntax from CMAKE template with Luac. When needed to go further an developer API allow to +execute directly Lua command within controller context from Rest/Ws (api=control, verb=lua_doscript). DoScript API takes two +other optional arguments func=xxxx where xxxx is the function to execute within Lua script and args a JSON object to provide +input parameter. When funcname is not given by default the controller try to execute middle filename doscript-xxxx-????.lua. + +When executed from controller Lua script may use any AppFw Apis as well as any L2C user defined commands in plugin. + +### Running as Standalone Controller + +Controller is a standard binding and can then be started independently of AAAA. When started with from build repository with +``` +afb-daemon --port=1234 --workdir=. --roothttp=../htdocs --tracereq=common --token= --verbose --binding=./Controller-afb/afb-control-afb.so +``` + +Afb-Daemon only load controller bindings without search for the other binding. In this case the name of the process is not change +to afb-audio and controller binding will search for a configuration file name 'onload-daemon-xxx.json'. This model can be used +to implement for testing purpose or simply to act as the glue in between a UI and other binder/services. + +## Config Sample + +Here after a simple configuration sample. + +``` +{ + "$schema": "ToBeDone", + "metadata": { + "label": "sample-audio-control", + "info": "Provide Default Audio Policy for Multimedia, Navigation and Emergency", + "version": "1.0" + }, + "onload": [{ + "label": "onload-default", + "info": "onload initialisation config", + "plugin": { + "label" : "MyPlug", + "sharelib": "ctl-audio-plugin-sample.ctlso", + "lua2c": ["Lua2cHelloWorld1", "Lua2cHelloWorld2"] + }, + "require": ["intel-hda", "jabra-usb", "scarlett-usb"], + "actions": [ + { + "label": "onload-sample-cb", + "info": "Call control sharelib install entrypoint", + "callback": "SamplePolicyInit", + "args": { + "arg1": "first_arg", + "nextarg": "second arg value" + } + }, { + "label": "onload-sample-api", + "info": "Assert AlsaCore Presence", + "api": "alsacore", + "verb": "ping", + "args": "test" + }, { + "label": "onload-hal-lua", + "info": "Load avaliable HALs", + "lua": "Audio_Init_Hal" + } + ] + }], + "controls": + [ + { + "label": "multimedia", + "permissions": "urn:AGL:permission:audio:public:mutimedia", + "actions": { + "label": "multimedia-control-lua", + "info": "Call Lua Script function Test_Lua_Engin", + "lua": "Audio_Set_Multimedia" + } + }, { + "label": "navigation", + "permissions": "urn:AGL:permission:audio:public:navigation", + "actions": { + "label": "navigation-control-lua", + "info": "Call Lua Script to set Navigation", + "lua": "Audio_Set_Navigation" + } + }, { + "label": "emergency", + "permissions": "urn:AGL:permission:audio:public:emergency", + "actions": { + "label": "emergency-control-ucm", + "lua": "Audio_Set_Emergency" + } + }, { + "label": "multi-step-sample", + "info" : "all actions must succeed for control to be accepted", + "actions": [{ + "label": "multimedia-control-cb", + "info": "Call Sharelib Sample Callback", + "callback": "sampleControlNavigation", + "args": { + "arg1": "snoopy", + "arg2": "toto" + } + }, { + "label": "navigation-control-ucm", + "api": "alsacore", + "verb": "ping", + "args": { + "test": "navigation" + } + }, { + "label": "navigation-control-lua", + "info": "Call Lua Script to set Navigation", + "lua": "Audio_Set_Navigation" + }] + } + ], + "events": + [ + { + "label": "Vehicle-Speed", + "info": "Action when Vehicule speed change", + "actions": [ + { + "label": "speed-action-1", + "callback": "Blink-when-over-130", + "args": { + "speed": 130 + "blink-speed": 1000 + } + }, { + "label": "Adjust-Volume", + "lua": "Adjust_Volume_To_Speed", + } + ] + }, + { + "label": "Reverse-Engage", + "info": "When Reverse Gear is Engage", + "actions": [ + { + "label": "Display-Rear-Camera", + "callback": "Display-Rear-Camera", + }, { + "label": "Prevent-Phone-Call", + "api" : "phone", + "verb" : "status", + "args": { + "call-accepted": false + } + } + ] + }, + { + "label": "Neutral-Engage", + "info": "When Reverse Neutral is Engage", + "actions": [ + { + "label": "Authorize-Video", + "api" : "video", + "verb" : "status", + "args": { + "tv-accepted": true + } + } + ] + } + ] +} + +``` + diff --git a/Controller-afb/a.out b/Controller-afb/a.out Binary files differnew file mode 100755 index 0000000..d18064f --- /dev/null +++ b/Controller-afb/a.out diff --git a/Controller-afb/ctl-apidef.h b/Controller-afb/ctl-apidef.h new file mode 100644 index 0000000..100fc79 --- /dev/null +++ b/Controller-afb/ctl-apidef.h @@ -0,0 +1,115 @@ + +static const char _afb_description_v2_control[] = + "{\"openapi\":\"3.0.0\",\"$schema\":\"http:iot.bzh/download/openapi/schem" + "a-3.0/default-schema.json\",\"info\":{\"description\":\"\",\"title\":\"c" + "ontroler\",\"version\":\"1.0\",\"x-binding-c-generator\":{\"api\":\"cont" + "rol\",\"version\":2,\"prefix\":\"ctlapi_\",\"postfix\":\"\",\"start\":nu" + "ll,\"onevent\":\"DispatchOneEvent\",\"init\":\"CtlBindingInit\",\"scope\"" + ":\"\",\"private\":false}},\"servers\":[{\"url\":\"ws://{host}:{port}/api" + "/polctl\",\"description\":\"Unicens2 API.\",\"variables\":{\"host\":{\"d" + "efault\":\"localhost\"},\"port\":{\"default\":\"1234\"}},\"x-afb-events\"" + ":[{\"$ref\":\"#/components/schemas/afb-event\"}]}],\"components\":{\"sch" + "emas\":{\"afb-reply\":{\"$ref\":\"#/components/schemas/afb-reply-v2\"},\"" + "afb-event\":{\"$ref\":\"#/components/schemas/afb-event-v2\"},\"afb-reply" + "-v2\":{\"title\":\"Generic response.\",\"type\":\"object\",\"required\":" + "[\"jtype\",\"request\"],\"properties\":{\"jtype\":{\"type\":\"string\",\"" + "const\":\"afb-reply\"},\"request\":{\"type\":\"object\",\"required\":[\"" + "status\"],\"properties\":{\"status\":{\"type\":\"string\"},\"info\":{\"t" + "ype\":\"string\"},\"token\":{\"type\":\"string\"},\"uuid\":{\"type\":\"s" + "tring\"},\"reqid\":{\"type\":\"string\"}}},\"response\":{\"type\":\"obje" + "ct\"}}},\"afb-event-v2\":{\"type\":\"object\",\"required\":[\"jtype\",\"" + "event\"],\"properties\":{\"jtype\":{\"type\":\"string\",\"const\":\"afb-" + "event\"},\"event\":{\"type\":\"string\"},\"data\":{\"type\":\"object\"}}" + "}},\"x-permissions\":{\"monitor\":{\"permission\":\"urn:AGL:permission:a" + "udio:public:monitor\"},\"multimedia\":{\"permission\":\"urn:AGL:permissi" + "on:audio:public:monitor\"},\"navigation\":{\"permission\":\"urn:AGL:perm" + "ission:audio:public:monitor\"},\"emergency\":{\"permission\":\"urn:AGL:p" + "ermission:audio:public:emergency\"}},\"responses\":{\"200\":{\"descripti" + "on\":\"A complex object array response\",\"content\":{\"application/json" + "\":{\"schema\":{\"$ref\":\"#/components/schemas/afb-reply\"}}}}}},\"path" + "s\":{\"/monitor\":{\"description\":\"Subcribe Audio Agent Policy Control" + " End\",\"get\":{\"x-permissions\":{\"$ref\":\"#/components/x-permissions" + "/monitor\"},\"parameters\":[{\"in\":\"query\",\"name\":\"event_patern\"," + "\"required\":true,\"schema\":{\"type\":\"string\"}}],\"responses\":{\"20" + "0\":{\"$ref\":\"#/components/responses/200\"}}}},\"/dispatch\":{\"descri" + "ption\":\"Request Access to Navigation Audio Channel.\",\"get\":{\"x-per" + "missions\":{\"$ref\":\"#/components/x-permissions/navigation\"},\"parame" + "ters\":[{\"in\":\"query\",\"name\":\"zone\",\"required\":false,\"schema\"" + ":{\"type\":\"string\"}}],\"responses\":{\"200\":{\"$ref\":\"#/components" + "/responses/200\"}}}},\"/request\":{\"description\":\"Execute LUA string " + "script.\",\"get\":{\"x-permissions\":{\"$ref\":\"#/components/x-permissi" + "ons/navigation\"},\"parameters\":[{\"in\":\"query\",\"name\":\"func\",\"" + "required\":true,\"schema\":{\"type\":\"string\"}},{\"in\":\"query\",\"na" + "me\":\"args\",\"required\":false,\"schema\":{\"type\":\"array\"}}],\"res" + "ponses\":{\"200\":{\"$ref\":\"#/components/responses/200\"}}}},\"/execlu" + "a\":{\"description\":\"Execute LUA string script.\",\"get\":{\"x-permiss" + "ions\":{\"$ref\":\"#/components/x-permissions/navigation\"},\"parameters" + "\":[{\"in\":\"query\",\"required\":true,\"schema\":{\"type\":\"string\"}" + "}],\"responses\":{\"200\":{\"$ref\":\"#/components/responses/200\"}}}},\"" + "/scriptlua\":{\"description\":\"Execute LUA string script.\",\"get\":{\"" + "x-permissions\":{\"$ref\":\"#/components/x-permissions/navigation\"},\"p" + "arameters\":[{\"in\":\"query\",\"name\":\"filename\",\"required\":true,\"" + "schema\":{\"type\":\"string\"}}],\"responses\":{\"200\":{\"$ref\":\"#/co" + "mponents/responses/200\"}}}}}}" +; + +static const struct afb_auth _afb_auths_v2_control[] = { + { .type = afb_auth_Permission, .text = "urn:AGL:permission:audio:public:monitor" } +}; + + void ctlapi_monitor(struct afb_req req); + void ctlapi_dispatch(struct afb_req req); + void ctlapi_request(struct afb_req req); + void ctlapi_execlua(struct afb_req req); + void ctlapi_scriptlua(struct afb_req req); + +static const struct afb_verb_v2 _afb_verbs_v2_control[] = { + { + .verb = "monitor", + .callback = ctlapi_monitor, + .auth = &_afb_auths_v2_control[0], + .info = NULL, + .session = AFB_SESSION_NONE_V2 + }, + { + .verb = "dispatch", + .callback = ctlapi_dispatch, + .auth = &_afb_auths_v2_control[0], + .info = NULL, + .session = AFB_SESSION_NONE_V2 + }, + { + .verb = "request", + .callback = ctlapi_request, + .auth = &_afb_auths_v2_control[0], + .info = NULL, + .session = AFB_SESSION_NONE_V2 + }, + { + .verb = "execlua", + .callback = ctlapi_execlua, + .auth = &_afb_auths_v2_control[0], + .info = NULL, + .session = AFB_SESSION_NONE_V2 + }, + { + .verb = "scriptlua", + .callback = ctlapi_scriptlua, + .auth = &_afb_auths_v2_control[0], + .info = NULL, + .session = AFB_SESSION_NONE_V2 + }, + { .verb = NULL } +}; + +const struct afb_binding_v2 afbBindingV2 = { + .api = "control", + .specification = _afb_description_v2_control, + .info = NULL, + .verbs = _afb_verbs_v2_control, + .preinit = NULL, + .init = CtlBindingInit, + .onevent = DispatchOneEvent, + .noconcurrency = 0 +}; + diff --git a/Controller-afb/ctl-apidef.json b/Controller-afb/ctl-apidef.json new file mode 100644 index 0000000..f292eec --- /dev/null +++ b/Controller-afb/ctl-apidef.json @@ -0,0 +1,250 @@ +{ + "openapi": "3.0.0", + "$schema": "http:iot.bzh/download/openapi/schema-3.0/default-schema.json", + "info": { + "description": "", + "title": "controler", + "version": "1.0", + "x-binding-c-generator": { + "api": "control", + "version": 2, + "prefix": "ctlapi_", + "postfix": "", + "start": null, + "onevent": "DispatchOneEvent", + "init": "CtlBindingInit", + "scope": "", + "private": false + } + }, + "servers": [ + { + "url": "ws://{host}:{port}/api/polctl", + "description": "Unicens2 API.", + "variables": { + "host": { + "default": "localhost" + }, + "port": { + "default": "1234" + } + }, + "x-afb-events": [ + { + "$ref": "#/components/schemas/afb-event" + } + ] + } + ], + "components": { + "schemas": { + "afb-reply": { + "$ref": "#/components/schemas/afb-reply-v2" + }, + "afb-event": { + "$ref": "#/components/schemas/afb-event-v2" + }, + "afb-reply-v2": { + "title": "Generic response.", + "type": "object", + "required": ["jtype", "request"], + "properties": { + "jtype": { + "type": "string", + "const": "afb-reply" + }, + "request": { + "type": "object", + "required": ["status"], + "properties": { + "status": { + "type": "string" + }, + "info": { + "type": "string" + }, + "token": { + "type": "string" + }, + "uuid": { + "type": "string" + }, + "reqid": { + "type": "string" + } + } + }, + "response": { + "type": "object" + } + } + }, + "afb-event-v2": { + "type": "object", + "required": ["jtype", "event"], + "properties": { + "jtype": { + "type": "string", + "const": "afb-event" + }, + "event": { + "type": "string" + }, + "data": { + "type": "object" + } + } + } + }, + "x-permissions": { + "monitor": { + "permission": "urn:AGL:permission:audio:public:monitor" + }, + "multimedia": { + "permission": "urn:AGL:permission:audio:public:monitor" + }, + "navigation": { + "permission": "urn:AGL:permission:audio:public:monitor" + }, + "emergency": { + "permission": "urn:AGL:permission:audio:public:emergency" + } + }, + "responses": { + "200": { + "description": "A complex object array response", + "content": { + "application/json": { + "schema": { + "$ref": "#/components/schemas/afb-reply" + } + } + } + } + } + }, + "paths": { + "/monitor": { + "description": "Subcribe Audio Agent Policy Control End", + "get": { + "x-permissions": { + "$ref": "#/components/x-permissions/monitor" + }, + "parameters": [ + { + "in": "query", + "name": "event_patern", + "required": true, + "schema": { + "type": "string" + } + } + ], + "responses": { + "200": { + "$ref": "#/components/responses/200" + } + } + } + }, + "/dispatch": { + "description": "Request Access to Navigation Audio Channel.", + "get": { + "x-permissions": { + "$ref": "#/components/x-permissions/navigation" + }, + "parameters": [ + { + "in": "query", + "name": "zone", + "required": false, + "schema": { + "type": "string" + } + } + ], + "responses": { + "200": { + "$ref": "#/components/responses/200" + } + } + } + }, + "/request": { + "description": "Execute LUA string script.", + "get": { + "x-permissions": { + "$ref": "#/components/x-permissions/navigation" + }, + "parameters": [ + { + "in": "query", + "name": "func", + "required": true, + "schema": { + "type": "string" + } + }, + { + "in": "query", + "name": "args", + "required": false, + "schema": { + "type": "array" + } + } + ], + "responses": { + "200": { + "$ref": "#/components/responses/200" + } + } + } + }, + "/execlua": { + "description": "Execute LUA string script.", + "get": { + "x-permissions": { + "$ref": "#/components/x-permissions/navigation" + }, + "parameters": [ + { + "in": "query", + "required": true, + "schema": { + "type": "string" + } + } + ], + "responses": { + "200": { + "$ref": "#/components/responses/200" + } + } + } + }, + "/scriptlua": { + "description": "Execute LUA string script.", + "get": { + "x-permissions": { + "$ref": "#/components/x-permissions/navigation" + }, + "parameters": [ + { + "in": "query", + "name": "filename", + "required": true, + "schema": { + "type": "string" + } + } + ], + "responses": { + "200": { + "$ref": "#/components/responses/200" + } + } + } + } + } +} diff --git a/Controller-afb/ctl-binding.c b/Controller-afb/ctl-binding.c new file mode 100644 index 0000000..ec33f82 --- /dev/null +++ b/Controller-afb/ctl-binding.c @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2016 "IoT.bzh" + * Author Fulup Ar Foll <fulup@iot.bzh> + * + * 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 +#include <stdio.h> +#include <string.h> +#include <time.h> + +#include "audio-common.h" +#include "ctl-binding.h" + + + +// Include Binding Stub generated from Json OpenAPI +#include "ctl-apidef.h" + + +PUBLIC void ctlapi_monitor (afb_req request) { + + // subscribe Client to event + int err = afb_req_subscribe(request, TimerEvtGet()); + if (err != 0) { + afb_req_fail_f(request, "register-event", "Fail to subscribe binder event"); + goto OnErrorExit; + } + + afb_req_success(request, NULL, NULL); + + OnErrorExit: + return; +} + +// Create Binding Event at Init +PUBLIC int CtlBindingInit () { + + int errcount=0; + + errcount += TimerEvtInit(); + errcount += DispatchInit(); +#ifdef CONTROL_SUPPORT_LUA + errcount += LuaLibInit(); +#endif + + const char *profile= getenv("CONTROL_ONLOAD_PROFILE"); + if (!profile) profile=CONTROL_ONLOAD_PROFILE; + + // now that everything is initialised execute the onload action + if (!errcount) + errcount += DispatchOnLoad(CONTROL_ONLOAD_PROFILE); + + AFB_DEBUG ("Audio Policy Control Binding Done errcount=%d", errcount); + return errcount; +} + diff --git a/Controller-afb/ctl-binding.h b/Controller-afb/ctl-binding.h new file mode 100644 index 0000000..a1c7ef2 --- /dev/null +++ b/Controller-afb/ctl-binding.h @@ -0,0 +1,146 @@ +/* + * Copyright (C) 2016 "IoT.bzh" + * Author Fulup Ar Foll <fulup@iot.bzh> + * + * 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. + */ + + +#ifndef CONTROLLER_BINDING_INCLUDE +#define CONTROLLER_BINDING_INCLUDE + +#define AFB_BINDING_VERSION 2 +#include <afb/afb-binding.h> +#include <json-c/json.h> +#include <filescan-utils.h> +#include <wrap-json.h> +#include <systemd/sd-event.h> + + +#ifdef CONTROL_SUPPORT_LUA +#include "lua.h" +#include "lauxlib.h" +#include "lualib.h" +#endif + +#ifndef PUBLIC + #define PUBLIC +#endif +#define STATIC static + +#ifndef UNUSED_ARG +#define UNUSED_ARG(x) UNUSED_ ## x __attribute__((__unused__)) +#define UNUSED_FUNCTION(x) __attribute__((__unused__)) UNUSED_ ## x +#endif + +// polctl-binding.c +PUBLIC int CtlBindingInit (); + +// ctl-timerevt.c +// ---------------------- +typedef int (*timerCallbackT)(void *context); + +typedef struct TimerHandleS { + int count; + int delay; + const char*label; + void *context; + timerCallbackT callback; + sd_event_source *evtSource; +} TimerHandleT; + +PUBLIC int TimerEvtInit (void); +PUBLIC afb_event TimerEvtGet(void); +PUBLIC void TimerEvtStart(TimerHandleT *timerHandle, timerCallbackT callback, void *context); +PUBLIC void TimerEvtStop(TimerHandleT *timerHandle); + +// ctl-policy +// ----------- + +typedef enum { + CTL_MODE_NONE=0, + CTL_MODE_API, + CTL_MODE_CB, + CTL_MODE_LUA, +} CtlRequestModeT; + + +typedef enum { + CTL_SOURCE_CLOSE=-1, + CTL_SOURCE_UNKNOWN=0, + CTL_SOURCE_ONLOAD=1, + CTL_SOURCE_OPEN=2, + CTL_SOURCE_EVENT=3, +} DispatchSourceT; + +typedef struct DispatchActionS{ + const char *info; + const char* label; + CtlRequestModeT mode; + const char* api; + const char* call; + json_object *argsJ; + int timeout; + int (*actionCB)(DispatchSourceT source, const char*label, json_object *argsJ, json_object *queryJ, void *context); +} DispatchActionT; + +typedef int (*Lua2cFunctionT)(char *funcname, json_object *argsJ, void*context); + +PUBLIC int DispatchInit(void); +PUBLIC int DispatchOnLoad(const char *onLoadLabel); +PUBLIC void DispatchOneEvent(const char *evtLabel, json_object *eventJ); +PUBLIC int DispatchOneL2c(lua_State* luaState, char *funcname, Lua2cFunctionT callback); +PUBLIC void ctlapi_dispatch (afb_req request); + +#ifdef CONTROL_SUPPORT_LUA +// ctl-lua.c +typedef int (*Lua2cWrapperT) (lua_State* luaState, char *funcname, Lua2cFunctionT callback); + +#define CTLP_LUA2C(FuncName, label,argsJ, context) static int FuncName(char*label,json_object*argsJ, void*context);\ + int lua2c_ ## FuncName(lua_State* luaState){return((*Lua2cWrap)(luaState, MACRO_STR_VALUE(FuncName), FuncName));};\ + static int FuncName(char* label, json_object* argsJ, void* context) + +typedef enum { + LUA_DOCALL, + LUA_DOSTRING, + LUA_DOSCRIPT, +} LuaDoActionT; + +PUBLIC int LuaLibInit (); +PUBLIC void LuaL2cNewLib(const char *label, luaL_Reg *l2cFunc, int count); +PUBLIC int Lua2cWrapper(lua_State* luaState, char *funcname, Lua2cFunctionT callback, void *context); +PUBLIC int LuaCallFunc (DispatchSourceT source, DispatchActionT *action, json_object *queryJ) ; +PUBLIC void ctlapi_lua_docall (afb_req request); +PUBLIC void ctlapi_lua_dostring (afb_req request); +PUBLIC void ctlapi_lua_doscript (afb_req request); + +#else + typedef void* Lua2cWrapperT; +#endif // CONTROL_SUPPORT_LUA + + +// sharelib ctl-plugin* +typedef struct { + long magic; + char *label; +} CtlPluginMagicT; + + +#define MACRO_STR_VALUE(arg) #arg +#define CTLP_REGISTER(pluglabel) CtlPluginMagicT CtlPluginMagic={.magic=CTL_PLUGIN_MAGIC,.label=pluglabel}; struct afb_binding_data_v2; Lua2cWrapperT Lua2cWrap; +#define CTLP_ONLOAD(label,version,info) void* CtlPluginOnload(char* label, char* version, char* info) +#define CTLP_CAPI(funcname,source, label,argsJ, queryJ, context) int funcname(DispatchSourceT source, char* label, json_object* argsJ, json_object* queryJ, void* context) + + + +#endif // CONTROLLER_BINDING_INCLUDE diff --git a/Controller-afb/ctl-dispatch.c b/Controller-afb/ctl-dispatch.c new file mode 100644 index 0000000..0104229 --- /dev/null +++ b/Controller-afb/ctl-dispatch.c @@ -0,0 +1,667 @@ +/* + * Copyright (C) 2016 "IoT.bzh" + * Author Fulup Ar Foll <fulup@iot.bzh> + * + * 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, something express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * Reference: + * Json load using json_unpack https://jansson.readthedocs.io/en/2.9/apiref.html#parsing-and-validating-values + */ + +#define _GNU_SOURCE +#include <stdio.h> +#include <string.h> +#include <dlfcn.h> + +#include "ctl-binding.h" + +typedef void*(*DispatchPluginInstallCbT)(const char* label, const char*version, const char*info); + + +static afb_req NULL_AFBREQ = {}; + + +typedef struct { + const char* label; + const char *info; + DispatchActionT *actions; +} DispatchHandleT; + +typedef struct { + const char *label; + const char *info; + void *context; + char *sharelib; + void *dlHandle; + luaL_Reg *l2cFunc; + int l2cCount; +} DispatchPluginT; + +typedef struct { + const char* label; + const char *info; + const char *version; + DispatchPluginT *plugin; + DispatchHandleT **onloads; + DispatchHandleT **events; + DispatchHandleT **controls; +} DispatchConfigT; + +// global config handle +STATIC DispatchConfigT *configHandle = NULL; + +STATIC int DispatchControlToIndex(DispatchHandleT **controls, const char* controlLabel) { + + for (int idx = 0; controls[idx]; idx++) { + if (!strcasecmp(controlLabel, controls[idx]->label)) return idx; + } + return -1; +} + +STATIC int DispatchOneControl(DispatchSourceT source, DispatchHandleT **controls, const char* controlLabel, json_object *queryJ, afb_req request) { + int err; + + if (!configHandle) { + AFB_ERROR("DISPATCH-CTL-API: (Hoops/Bug!!!) No Config Loaded"); + goto OnErrorExit; + } + + if (!configHandle->controls) { + AFB_ERROR("DISPATCH-CTL-API: No Control Action in Json config label=%s version=%s", configHandle->label, configHandle->version); + goto OnErrorExit; + } + + int index = DispatchControlToIndex(controls, controlLabel); + if (index < 0 || !controls[index]->actions) { + AFB_ERROR("DISPATCH-CTL-API:NotFound/Error label=%s in Json Control Config File", controlLabel); + goto OnErrorExit; + } + + // Fulup (Bug/Feature) in current version is unique to every onload profile + if (configHandle->plugin && configHandle->plugin->l2cCount) { + LuaL2cNewLib (configHandle->plugin->label, configHandle->plugin->l2cFunc, configHandle->plugin->l2cCount); + } + + // loop on action for this control + DispatchActionT *actions = controls[index]->actions; + for (int idx = 0; actions[idx].label; idx++) { + + switch (actions[idx].mode) { + case CTL_MODE_API: + { + json_object *returnJ; + + // if query is empty increment usage count and pass args + if (!queryJ || json_object_get_type(queryJ) != json_type_object) { + json_object_get(actions[idx].argsJ); + queryJ= actions[idx].argsJ; + } else if (actions[idx].argsJ) { + + // Merge queryJ and argsJ before sending request + if (json_object_get_type(actions[idx].argsJ) == json_type_object) { + json_object_object_foreach(actions[idx].argsJ, key, val) { + json_object_object_add(queryJ, key, val); + } + } else { + json_object_object_add(queryJ, "args", actions[idx].argsJ); + } + } + + int err = afb_service_call_sync(actions[idx].api, actions[idx].call, queryJ, &returnJ); + if (err) { + static const char*format = "DispatchOneControl(Api) api=%s verb=%s args=%s"; + if (afb_req_is_valid(request))afb_req_fail_f(request, "DISPATCH-CTL-MODE:API", format, actions[idx].label, actions[idx].api, actions[idx].call); + else AFB_ERROR(format, actions[idx].api, actions[idx].call, actions[idx].label); + goto OnErrorExit; + } + break; + } + +#ifdef CONTROL_SUPPORT_LUA + case CTL_MODE_LUA: + err = LuaCallFunc(source, &actions[idx], queryJ); + if (err) { + static const char*format = "DispatchOneControl(Lua) label=%s func=%s args=%s"; + if (afb_req_is_valid(request)) afb_req_fail_f(request, "DISPATCH-CTL-MODE:Lua", format, actions[idx].label, actions[idx].call, json_object_get_string(actions[idx].argsJ)); + else AFB_ERROR(format, actions[idx].label, actions[idx].call, json_object_get_string(actions[idx].argsJ)); + goto OnErrorExit; + } + break; +#endif + + case CTL_MODE_CB: + err = (*actions[idx].actionCB) (source, actions[idx].label, actions[idx].argsJ, queryJ, configHandle->plugin->context); + if (err) { + static const char*format = "DispatchOneControl(Callback) label%s func=%s args=%s"; + if (afb_req_is_valid(request)) afb_req_fail_f(request, "DISPATCH-CTL-MODE:Cb", format, actions[idx].label, actions[idx].call, json_object_get_string(actions[idx].argsJ)); + else AFB_ERROR(format, actions[idx].label, actions[idx].call, json_object_get_string(actions[idx].argsJ)); + goto OnErrorExit; + } + break; + + default: + { + static const char*format = "DispatchOneControl(unknown) mode control=%s action=%s"; + AFB_ERROR(format, controls[index]->label); + if (afb_req_is_valid(request))afb_req_fail_f(request, "DISPATCH-CTL-MODE:Unknown", format, controls[index]->label); + } + } + } + + // everything when fine + if (afb_req_is_valid(request))afb_req_success(request, NULL, controls[index]->label); + return 0; + +OnErrorExit: + return -1; +} + + +// Event name is mapped on control label and executed as a standard control + +PUBLIC void DispatchOneEvent(const char *evtLabel, json_object *eventJ) { + DispatchHandleT **events = configHandle->events; + + (void) DispatchOneControl(CTL_SOURCE_EVENT, events, evtLabel, eventJ, NULL_AFBREQ); +} + +// Event name is mapped on control label and executed as a standard control + +PUBLIC int DispatchOnLoad(const char *onLoadLabel) { + if (!configHandle) return 1; + + DispatchHandleT **onloads = configHandle->onloads; + + int err = DispatchOneControl(CTL_SOURCE_ONLOAD, onloads, onLoadLabel, NULL, NULL_AFBREQ); + return err; +} + +PUBLIC void ctlapi_dispatch(afb_req request) { + DispatchHandleT **controls = configHandle->controls; + json_object *queryJ, *argsJ=NULL; + const char *target; + DispatchSourceT source= CTL_SOURCE_UNKNOWN; + + queryJ = afb_req_json(request); + int err = wrap_json_unpack(queryJ, "{s:s, s?i s?o !}", "target", &target, "source", &source, "args", &argsJ); + if (err) { + afb_req_fail_f(request, "CTL-DISPTACH-INVALID", "missing target or args not a valid json object query=%s", json_object_get_string(queryJ)); + goto OnErrorExit; + } + + (void) DispatchOneControl(source, controls, target, argsJ, request); + +OnErrorExit: + return; +} + +// Wrapper to Lua2c plugin command add context dans delegate to LuaWrapper +PUBLIC int DispatchOneL2c(lua_State* luaState, char *funcname, Lua2cFunctionT callback) { +#ifndef CONTROL_SUPPORT_LUA + AFB_ERROR("DISPATCH-ONE-L2C: LUA support not selected (cf:CONTROL_SUPPORT_LUA) in config.cmake"); + return 1; +#else + int err=Lua2cWrapper(luaState, funcname, callback, configHandle->plugin->context); + return err; +#endif +} + + +// List Avaliable Configuration Files + +PUBLIC void ctlapi_config(struct afb_req request) { + json_object*tmpJ; + char *dirList; + + + json_object* queryJ = afb_req_json(request); + if (queryJ && json_object_object_get_ex(queryJ, "cfgpath", &tmpJ)) { + dirList = strdup(json_object_get_string(tmpJ)); + } else { + + dirList = getenv("CONTROL_CONFIG_PATH"); + if (!dirList) dirList = strdup(CONTROL_CONFIG_PATH); + AFB_NOTICE("CONFIG-MISSING: use default CONTROL_CONFIG_PATH=%s", CONTROL_CONFIG_PATH); + } + + // get list of config file + struct json_object *responseJ = ScanForConfig(dirList, CTL_SCAN_RECURSIVE, "onload", "json"); + + if (json_object_array_length(responseJ) == 0) { + afb_req_fail(request, "CONFIGPATH:EMPTY", "No Config Found in CONTROL_CONFIG_PATH"); + } else { + afb_req_success(request, responseJ, NULL); + } + + return; +} + +// unpack individual action object + +STATIC int DispatchLoadOneAction(DispatchConfigT *controlConfig, json_object *actionJ, DispatchActionT *action) { + char *api = NULL, *verb = NULL, *callback = NULL, *lua = NULL; + int err, modeCount = 0; + + err = wrap_json_unpack(actionJ, "{ss,s?s,s?s,s?s,s?s,s?s,s?o !}" + , "label", &action->label, "info", &action->info, "callback", &callback, "lua", &lua, "api", &api, "verb", &verb, "args", &action->argsJ); + if (err) { + AFB_ERROR("DISPATCH-LOAD-ACTION Missing something label|info|callback|lua|(api+verb)|args in %s", json_object_get_string(actionJ)); + goto OnErrorExit; + } + + if (lua) { + action->mode = CTL_MODE_LUA; + action->call = lua; + modeCount++; + } + + if (api && verb) { + action->mode = CTL_MODE_API; + action->api = api; + action->call = verb; + modeCount++; + } + + if (callback && controlConfig->plugin) { + action->mode = CTL_MODE_CB; + action->call = callback; + modeCount++; + + action->actionCB = dlsym(controlConfig->plugin->dlHandle, callback); + if (!action->actionCB) { + AFB_ERROR("DISPATCH-LOAD-ACTION fail to find calbback=%s in %s", callback, controlConfig->plugin->sharelib); + goto OnErrorExit; + } + } + + // make sure at least one mode is selected + if (modeCount == 0) { + AFB_ERROR("DISPATCH-LOAD-ACTION No Action Selected lua|callback|(api+verb) in %s", json_object_get_string(actionJ)); + goto OnErrorExit; + } + + if (modeCount > 1) { + AFB_ERROR("DISPATCH-LOAD-ACTION:ToMany arguments lua|callback|(api+verb) in %s", json_object_get_string(actionJ)); + goto OnErrorExit; + } + return 0; + +OnErrorExit: + return -1; +}; + +STATIC DispatchActionT *DispatchLoadActions(DispatchConfigT *controlConfig, json_object *actionsJ) { + int err; + DispatchActionT *actions; + + // action array is close with a nullvalue; + if (json_object_get_type(actionsJ) == json_type_array) { + int count = json_object_array_length(actionsJ); + actions = calloc(count + 1, sizeof (DispatchActionT)); + + for (int idx = 0; idx < count; idx++) { + json_object *actionJ = json_object_array_get_idx(actionsJ, idx); + err = DispatchLoadOneAction(controlConfig, actionJ, &actions[idx]); + if (err) goto OnErrorExit; + } + + } else { + actions = calloc(2, sizeof (DispatchActionT)); + err = DispatchLoadOneAction(controlConfig, actionsJ, &actions[0]); + if (err) goto OnErrorExit; + } + + return actions; + +OnErrorExit: + return NULL; + +} + +STATIC DispatchHandleT *DispatchLoadControl(DispatchConfigT *controlConfig, json_object *controlJ) { + json_object *actionsJ, *permissionsJ; + int err; + + DispatchHandleT *dispatchHandle = calloc(1, sizeof (DispatchHandleT)); + err = wrap_json_unpack(controlJ, "{ss,s?s,s?o, so !}", "label", &dispatchHandle->label, "info", &dispatchHandle->info + , "permissions", &permissionsJ, "actions", &actionsJ); + if (err) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:CONTROL Missing something label|[info]|actions in %s", json_object_get_string(controlJ)); + goto OnErrorExit; + } + + dispatchHandle->actions = DispatchLoadActions(controlConfig, actionsJ); + if (!dispatchHandle->actions) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:CONTROL Error when parsing actions %s", dispatchHandle->label); + goto OnErrorExit; + } + return dispatchHandle; + +OnErrorExit: + return NULL; +} + +STATIC DispatchHandleT *DispatchLoadOnload(DispatchConfigT *controlConfig, json_object *onloadJ) { + json_object *actionsJ = NULL, *requireJ = NULL, *pluginJ = NULL; + int err; + + DispatchHandleT *dispatchHandle = calloc(1, sizeof (DispatchHandleT)); + err = wrap_json_unpack(onloadJ, "{ss,s?s, s?o,s?o,s?o !}", + "label", &dispatchHandle->label, "info", &dispatchHandle->info, "plugin", &pluginJ, "require", &requireJ, "actions", &actionsJ); + if (err) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:ONLOAD Missing something label|[info]|[plugin]|[actions] in %s", json_object_get_string(onloadJ)); + goto OnErrorExit; + } + + // best effort to initialise everything before starting + if (requireJ) { + + void DispatchRequireOneApi(json_object * bindindJ) { + const char* requireBinding = json_object_get_string(bindindJ); + err = afb_daemon_require_api(requireBinding, 1); + if (err) { + AFB_WARNING("DISPATCH-LOAD-CONFIG:REQUIRE Fail to get=%s", requireBinding); + } + } + + if (json_object_get_type(requireJ) == json_type_array) { + for (int idx = 0; idx < json_object_array_length(requireJ); idx++) { + DispatchRequireOneApi(json_object_array_get_idx(requireJ, idx)); + } + } else { + DispatchRequireOneApi(requireJ); + } + } + + if (pluginJ) { + json_object *lua2csJ = NULL; + DispatchPluginT *dPlugin= calloc(1, sizeof(DispatchPluginT)); + controlConfig->plugin = dPlugin; + const char*ldSearchPath=NULL; + + err = wrap_json_unpack(pluginJ, "{ss,s?s,s?s,ss,s?o!}", + "label", &dPlugin->label, "info", &dPlugin->info, "ldpath", &ldSearchPath, "sharelib", &dPlugin->sharelib, "lua2c", &lua2csJ); + if (err) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:ONLOAD Plugin missing label|[info]|sharelib|[lua2c] in %s", json_object_get_string(onloadJ)); + goto OnErrorExit; + } + + // if search path not in Json config file, then try default + if (!ldSearchPath) ldSearchPath=CONTROL_PLUGIN_PATH; + + // search for default policy config file + json_object *pluginPathJ = ScanForConfig(ldSearchPath, CTL_SCAN_RECURSIVE, dPlugin->sharelib, NULL); + if (!pluginPathJ || json_object_array_length(pluginPathJ) == 0) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:PLUGIN Missing plugin=%s in path=%s", dPlugin->sharelib, ldSearchPath); + goto OnErrorExit; + } + + char *filename; + char*fullpath; + err = wrap_json_unpack(json_object_array_get_idx(pluginPathJ, 0), "{s:s, s:s !}", "fullpath", &fullpath, "filename", &filename); + if (err) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:PLUGIN HOOPs invalid plugin file path = %s", json_object_get_string(pluginPathJ)); + goto OnErrorExit; + } + + if (json_object_array_length(pluginPathJ) > 1) { + AFB_WARNING("DISPATCH-LOAD-CONFIG:PLUGIN plugin multiple instances in searchpath will use %s/%s", fullpath, filename); + } + + char pluginpath[CONTROL_MAXPATH_LEN]; + strncpy(pluginpath, fullpath, sizeof (pluginpath)); + strncat(pluginpath, "/", sizeof (pluginpath)); + strncat(pluginpath, filename, sizeof (pluginpath)); + dPlugin->dlHandle = dlopen(pluginpath, RTLD_NOW); + if (!dPlugin->dlHandle) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:PLUGIN Fail to load pluginpath=%s err= %s", pluginpath, dlerror()); + goto OnErrorExit; + } + + CtlPluginMagicT *ctlPluginMagic = (CtlPluginMagicT*) dlsym(dPlugin->dlHandle, "CtlPluginMagic"); + if (!ctlPluginMagic || ctlPluginMagic->magic != CTL_PLUGIN_MAGIC) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:Plugin symbol'CtlPluginMagic' missing or != CTL_PLUGIN_MAGIC plugin=%s", pluginpath); + goto OnErrorExit; + } else { + AFB_NOTICE("DISPATCH-LOAD-CONFIG:Plugin %s successfully registered", ctlPluginMagic->label); + } + + // Jose hack to make verbosity visible from sharelib + struct afb_binding_data_v2 *afbHidenData = dlsym(dPlugin->dlHandle, "afbBindingV2data"); + if (afbHidenData) *afbHidenData = afbBindingV2data; + + // Push lua2cWrapper @ into plugin + Lua2cWrapperT *lua2cInPlug = dlsym(dPlugin->dlHandle, "Lua2cWrap"); +#ifndef CONTROL_SUPPORT_LUA + if (lua2cInPlug) *lua2cInPlug = NULL; +#else + // Lua2cWrapper is part of binder and not expose to dynamic link + if (lua2cInPlug) *lua2cInPlug = DispatchOneL2c; + + { + int Lua2cAddOne(luaL_Reg *l2cFunc, const char* l2cName, int index) { + char funcName[CONTROL_MAXPATH_LEN]; + strncpy(funcName, "lua2c_", sizeof(funcName)); + strncat(funcName, l2cName, sizeof(funcName)); + + Lua2cFunctionT l2cFunction= (Lua2cFunctionT)dlsym(dPlugin->dlHandle, funcName); + if (!l2cFunction) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:Plugin symbol'%s' missing err=%s", funcName, dlerror()); + return 1; + } + l2cFunc[index].func=(void*)l2cFunction; + l2cFunc[index].name=strdup(l2cName); + + return 0; + } + + int errCount = 0; + luaL_Reg *l2cFunc=NULL; + int count=0; + + // look on l2c command and push them to LUA + if (json_object_get_type(lua2csJ) == json_type_array) { + int length = json_object_array_length(lua2csJ); + l2cFunc = calloc(length + 1, sizeof (luaL_Reg)); + for (count=0; count < length; count++) { + int err; + const char *l2cName = json_object_get_string(json_object_array_get_idx(lua2csJ, count)); + err = Lua2cAddOne(l2cFunc, l2cName, count); + if (err) errCount++; + } + } else { + l2cFunc = calloc(2, sizeof (luaL_Reg)); + const char *l2cName = json_object_get_string(lua2csJ); + errCount = Lua2cAddOne(l2cFunc, l2cName, 0); + count=1; + } + if (errCount) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:Plugin %d symbols not found in plugin='%s'", errCount, pluginpath); + goto OnErrorExit; + } else { + dPlugin->l2cFunc= l2cFunc; + dPlugin->l2cCount= count; + } + } +#endif + DispatchPluginInstallCbT ctlPluginOnload = dlsym(dPlugin->dlHandle, "CtlPluginOnload"); + if (ctlPluginOnload) { + dPlugin->context = (*ctlPluginOnload) (controlConfig->label, controlConfig->version, controlConfig->info); + } + } + + dispatchHandle->actions = DispatchLoadActions(controlConfig, actionsJ); + if (!dispatchHandle->actions) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:ONLOAD Error when parsing actions %s", dispatchHandle->label); + goto OnErrorExit; + } + return dispatchHandle; + +OnErrorExit: + return NULL; +} + +STATIC DispatchConfigT *DispatchLoadConfig(const char* filepath) { + json_object *controlConfigJ, *ignoreJ; + int err; + + // Load JSON file + controlConfigJ = json_object_from_file(filepath); + if (!controlConfigJ) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:JsonLoad invalid JSON %s ", filepath); + goto OnErrorExit; + } + + AFB_INFO("DISPATCH-LOAD-CONFIG: loading config filepath=%s", filepath); + + json_object *metadataJ = NULL, *onloadsJ = NULL, *controlsJ = NULL, *eventsJ = NULL; + err = wrap_json_unpack(controlConfigJ, "{s?o,so,s?o,s?o,s?o !}", "$schema", &ignoreJ, "metadata", &metadataJ, "onload", &onloadsJ, "controls", &controlsJ, "events", &eventsJ); + if (err) { + AFB_ERROR("DISPATCH-LOAD-CONFIG Missing something metadata|[onload]|[controls]|[events] in %s", json_object_get_string(controlConfigJ)); + goto OnErrorExit; + } + + DispatchConfigT *controlConfig = calloc(1, sizeof (DispatchConfigT)); + if (metadataJ) { + err = wrap_json_unpack(metadataJ, "{ss,s?s,ss !}", "label", &controlConfig->label, "info", &controlConfig->info, "version", &controlConfig->version); + if (err) { + AFB_ERROR("DISPATCH-LOAD-CONFIG:METADATA Missing something label|version|[label] in %s", json_object_get_string(metadataJ)); + goto OnErrorExit; + } + } + + if (onloadsJ) { + DispatchHandleT *dispatchHandle; + + if (json_object_get_type(onloadsJ) != json_type_array) { + controlConfig->onloads = (DispatchHandleT**) calloc(2, sizeof (void*)); + dispatchHandle = DispatchLoadOnload(controlConfig, onloadsJ); + controlConfig->onloads[0] = dispatchHandle; + } else { + int length = json_object_array_length(onloadsJ); + controlConfig->onloads = (DispatchHandleT**) calloc(length + 1, sizeof (void*)); + + for (int jdx = 0; jdx < length; jdx++) { + json_object *onloadJ = json_object_array_get_idx(onloadsJ, jdx); + dispatchHandle = DispatchLoadOnload(controlConfig, onloadJ); + controlConfig->onloads[jdx] = dispatchHandle; + } + } + } + + if (controlsJ) { + DispatchHandleT *dispatchHandle; + + if (json_object_get_type(controlsJ) != json_type_array) { + controlConfig->controls = (DispatchHandleT**) calloc(2, sizeof (void*)); + dispatchHandle = DispatchLoadControl(controlConfig, controlsJ); + controlConfig->controls[0] = dispatchHandle; + } else { + int length = json_object_array_length(controlsJ); + controlConfig->controls = (DispatchHandleT**) calloc(length + 1, sizeof (void*)); + + for (int jdx = 0; jdx < length; jdx++) { + json_object *controlJ = json_object_array_get_idx(controlsJ, jdx); + dispatchHandle = DispatchLoadControl(controlConfig, controlJ); + controlConfig->controls[jdx] = dispatchHandle; + } + } + } + + if (eventsJ) { + DispatchHandleT *dispatchHandle; + + if (json_object_get_type(eventsJ) != json_type_array) { + controlConfig->events = (DispatchHandleT**) calloc(2, sizeof (void*)); + dispatchHandle = DispatchLoadControl(controlConfig, eventsJ); + controlConfig->events[0] = dispatchHandle; + } else { + int length = json_object_array_length(eventsJ); + controlConfig->events = (DispatchHandleT**) calloc(length + 1, sizeof (void*)); + + for (int jdx = 0; jdx < length; jdx++) { + json_object *eventJ = json_object_array_get_idx(eventsJ, jdx); + dispatchHandle = DispatchLoadControl(controlConfig, eventJ); + controlConfig->events[jdx] = dispatchHandle; + } + } + } + + return controlConfig; + +OnErrorExit: + return NULL; +} + + +// Load default config file at init + +PUBLIC int DispatchInit() { + int index, err, luaLoaded = 0; + char controlFile [CONTROL_MAXPATH_LEN]; + + const char *dirList= getenv("CONTROL_CONFIG_PATH"); + if (!dirList) dirList=CONTROL_CONFIG_PATH; + + strncpy(controlFile, CONTROL_CONFIG_PRE "-", CONTROL_MAXPATH_LEN); + strncat(controlFile, GetBinderName(), CONTROL_MAXPATH_LEN); + + // search for default dispatch config file + json_object* responseJ = ScanForConfig(dirList, CTL_SCAN_RECURSIVE, controlFile, "json"); + + // We load 1st file others are just warnings + for (index = 0; index < json_object_array_length(responseJ); index++) { + json_object *entryJ = json_object_array_get_idx(responseJ, index); + + char *filename; + char*fullpath; + err = wrap_json_unpack(entryJ, "{s:s, s:s !}", "fullpath", &fullpath, "filename", &filename); + if (err) { + AFB_ERROR("DISPATCH-INIT HOOPs invalid JSON entry= %s", json_object_get_string(entryJ)); + goto OnErrorExit; + } + + if (index == 0) { + if (strcasestr(filename, controlFile)) { + char filepath[CONTROL_MAXPATH_LEN]; + strncpy(filepath, fullpath, sizeof (filepath)); + strncat(filepath, "/", sizeof (filepath)); + strncat(filepath, filename, sizeof (filepath)); + configHandle = DispatchLoadConfig(filepath); + if (!configHandle) { + AFB_ERROR("DISPATCH-INIT:ERROR Fail loading [%s]", filepath); + goto OnErrorExit; + } + luaLoaded = 1; + break; + } + } else { + AFB_WARNING("DISPATCH-INIT:WARNING Secondary Control Config Ignored %s/%s", fullpath, filename); + } + } + + // no dispatch config found remove control API from binder + if (!luaLoaded) { + AFB_WARNING("DISPATCH-INIT:WARNING (setenv CONTROL_CONFIG_PATH) No Config '%s-*.json' in '%s'", controlFile, dirList); + } + + AFB_NOTICE("DISPATCH-INIT:SUCCES: Audio Control Dispatch Init"); + return 0; + +OnErrorExit: + AFB_NOTICE("DISPATCH-INIT:ERROR: Audio Control Dispatch Init"); + return 1; +} + + + diff --git a/Controller-afb/ctl-lua.c b/Controller-afb/ctl-lua.c new file mode 100644 index 0000000..412a158 --- /dev/null +++ b/Controller-afb/ctl-lua.c @@ -0,0 +1,1040 @@ +/* + * Copyright (C) 2016 "IoT.bzh" + * Author Fulup Ar Foll <fulup@iot.bzh> + * + * 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. + * ref: + * (manual) https://www.lua.org/manual/5.3/manual.html + * (lua->C) http://www.troubleshooters.com/codecorn/lua/lua_c_calls_lua.htm#_Anatomy_of_a_Lua_Call + * (lua/C Var) http://acamara.es/blog/2012/08/passing-variables-from-lua-5-2-to-c-and-vice-versa/ + * (Lua/C Lib)https://john.nachtimwald.com/2014/07/12/wrapping-a-c-library-in-lua/ + * (Lua/C Table) https://gist.github.com/SONIC3D/10388137 + * (Lua/C Nested table) https://stackoverflow.com/questions/45699144/lua-nested-table-from-lua-to-c + * (Lua/C Wrapper) https://stackoverflow.com/questions/45699950/lua-passing-handle-to-function-created-with-newlib + * + */ + +#define _GNU_SOURCE +#include <stdio.h> +#include <string.h> + + +#include "ctl-binding.h" +#include "wrap-json.h" + +#define LUA_FIST_ARG 2 // when using luaL_newlib calllback receive libtable as 1st arg +#define LUA_MSG_MAX_LENGTH 512 +#define JSON_ERROR (json_object*)-1 +static afb_req NULL_AFBREQ = {}; + + +static lua_State* luaState; + +#define CTX_MAGIC 123456789 +#define CTX_TOKEN "AFB_ctx" + +typedef struct { + char *name; + int count; + afb_event event; +} LuaAfbEvent; +static LuaAfbEvent *luaDefaultEvt; + +typedef struct { + int ctxMagic; + afb_req request; + void *handle; + char *info; +} LuaAfbContextT; + +typedef struct { + const char *callback; + json_object *context; + void *handle; +} LuaCallServiceT; + +typedef enum { + AFB_MSG_INFO, + AFB_MSG_WARNING, + AFB_MSG_NOTICE, + AFB_MSG_DEBUG, + AFB_MSG_ERROR, +} LuaAfbMessageT; + +/* + * Note(Fulup): I fail to use luaL_setmetatable and replaced it with a simple opaque + * handle while waiting for someone smarter than me to find a better solution + * https://stackoverflow.com/questions/45596493/lua-using-lua-newuserdata-from-lua-pcall + */ + +STATIC LuaAfbContextT *LuaCtxCheck (lua_State *luaState, int index) { + LuaAfbContextT *afbContext; + //luaL_checktype(luaState, index, LUA_TUSERDATA); + //afbContext = (LuaAfbContextT *)luaL_checkudata(luaState, index, CTX_TOKEN); + luaL_checktype(luaState, index, LUA_TLIGHTUSERDATA); + afbContext = (LuaAfbContextT *) lua_touserdata(luaState, index); + if (afbContext == NULL && afbContext->ctxMagic != CTX_MAGIC) { + luaL_error(luaState, "Fail to retrieve user data context=%s", CTX_TOKEN); + AFB_ERROR ("afbContextCheck error retrieving afbContext"); + return NULL; + } + return afbContext; +} + +STATIC LuaAfbContextT *LuaCtxPush (lua_State *luaState, afb_req request, void *handle, const char* info) { + // LuaAfbContextT *afbContext = (LuaAfbContextT *)lua_newuserdata(luaState, sizeof(LuaAfbContextT)); + // luaL_setmetatable(luaState, CTX_TOKEN); + LuaAfbContextT *afbContext = (LuaAfbContextT *)calloc(1, sizeof(LuaAfbContextT)); + lua_pushlightuserdata(luaState, afbContext); + if (!afbContext) { + AFB_ERROR ("LuaCtxPush fail to allocate user data context"); + return NULL; + } + afbContext->ctxMagic=CTX_MAGIC; + afbContext->info=strdup(info); + afbContext->request= request; + afbContext->handle= handle; + return afbContext; +} + +STATIC void LuaCtxFree (LuaAfbContextT *afbContext) { + free(afbContext->info); + free(afbContext); +} + +// Push a json structure on the stack as a LUA table +STATIC int LuaPushArgument (json_object *argsJ) { + + //AFB_NOTICE("LuaPushArgument argsJ=%s", json_object_get_string(argsJ)); + + json_type jtype= json_object_get_type(argsJ); + switch (jtype) { + case json_type_object: { + lua_newtable (luaState); + json_object_object_foreach (argsJ, key, val) { + int done = LuaPushArgument (val); + if (done) { + lua_setfield(luaState,-2, key); + } + } + break; + } + case json_type_array: { + int length= json_object_array_length(argsJ); + lua_newtable (luaState); + for (int idx=0; idx < length; idx ++) { + json_object *val=json_object_array_get_idx(argsJ, idx); + LuaPushArgument (val); + lua_seti (luaState,-2, idx); + } + break; + } + case json_type_int: + lua_pushinteger(luaState, json_object_get_int(argsJ)); + break; + case json_type_string: + lua_pushstring(luaState, json_object_get_string(argsJ)); + break; + case json_type_boolean: + lua_pushboolean(luaState, json_object_get_boolean(argsJ)); + break; + case json_type_double: + lua_pushnumber(luaState, json_object_get_double(argsJ)); + break; + case json_type_null: + AFB_WARNING("LuaPushArgument: NULL object type %s", json_object_get_string(argsJ)); + return 0; + break; + + default: + AFB_ERROR("LuaPushArgument: unsupported Json object type %s", json_object_get_string(argsJ)); + return 0; + } + return 1; +} + +STATIC json_object *LuaPopOneArg (lua_State* luaState, int idx); + +STATIC json_object *LuaTableToJson (lua_State* luaState, int index) { + int idx; + #define LUA_KEY_INDEX -2 + #define LUA_VALUE_INDEX -1 + + json_object *tableJ= json_object_new_object(); + const char *key; + char number[3]; + lua_pushnil(luaState); // 1st key + if (index < 0) index--; + for (idx=1; lua_next(luaState, index) != 0; idx++) { + + // uses 'key' (at index -2) and 'value' (at index -1) + if (lua_type(luaState,LUA_KEY_INDEX) == LUA_TSTRING) key= lua_tostring(luaState, LUA_KEY_INDEX); + else { + snprintf(number, sizeof(number),"%d", idx); + key=number; + } + json_object *argJ= LuaPopOneArg(luaState, LUA_VALUE_INDEX); + json_object_object_add(tableJ, key, argJ); + lua_pop(luaState, 1); // removes 'value'; keeps 'key' for next iteration + } + + // Query is empty free empty json object + if (idx == 1) { + json_object_put(tableJ); + return NULL; + } + return tableJ; +} + +STATIC json_object *LuaPopOneArg (lua_State* luaState, int idx) { + json_object *value=NULL; + + int luaType = lua_type(luaState, idx); + switch(luaType) { + case LUA_TNUMBER: { + lua_Number number= lua_tonumber(luaState, idx);; + int nombre = (int)number; // evil trick to determine wether n fits in an integer. (stolen from ltcl.c) + if (number == nombre) { + value= json_object_new_int((int)number); + } else { + value= json_object_new_double(number); + } + break; + } + case LUA_TBOOLEAN: + value= json_object_new_boolean(lua_toboolean(luaState, idx)); + break; + case LUA_TSTRING: + value= json_object_new_string(lua_tostring(luaState, idx)); + break; + case LUA_TTABLE: + value= LuaTableToJson(luaState, idx); + break; + case LUA_TNIL: + value=json_object_new_string("nil") ; + break; + case LUA_TUSERDATA: + value=json_object_new_int64((int64_t)lua_touserdata(luaState, idx)); // store userdata as int !!! + break; + + default: + AFB_NOTICE ("LuaPopOneArg: script returned Unknown/Unsupported idx=%d type:%d/%s", idx, luaType, lua_typename(luaState, luaType)); + value=NULL; + } + + return value; +} + +static json_object *LuaPopArgs (lua_State* luaState, int start) { + json_object *responseJ; + + int stop = lua_gettop(luaState); + if(stop-start <0) return NULL; + + // start at 2 because we are using a function array lib + if (start == stop) { + responseJ=LuaPopOneArg (luaState, start); + } else { + // loop on remaining return arguments + responseJ= json_object_new_array(); + for (int idx=start; idx <= stop; idx++) { + json_object *argJ=LuaPopOneArg (luaState, idx); + if (!argJ) goto OnErrorExit; + json_object_array_add(responseJ, argJ); + } + } + + return responseJ; + + OnErrorExit: + return NULL; +} + + +STATIC int LuaFormatMessage(lua_State* luaState, LuaAfbMessageT action) { + char *message; + + json_object *responseJ= LuaPopArgs(luaState, LUA_FIST_ARG); + + if (!responseJ) { + luaL_error(luaState,"LuaFormatMessage empty message"); + goto OnErrorExit; + } + + // if we have only on argument just return the value. + if (json_object_get_type(responseJ)!=json_type_array || json_object_array_length(responseJ) <2) { + message= (char*)json_object_get_string(responseJ); + goto PrintMessage; + } + + // extract format and push all other parameter on the stack + message = alloca (LUA_MSG_MAX_LENGTH); + const char *format = json_object_get_string(json_object_array_get_idx(responseJ, 0)); + + int arrayIdx=1; + int targetIdx=0; + + for (int idx=0; format[idx] !='\0'; idx++) { + + if (format[idx]=='%' && format[idx] !='\0') { + json_object *slotJ= json_object_array_get_idx(responseJ, arrayIdx); + //if (slotJ) AFB_NOTICE("**** idx=%d slotJ=%s", arrayIdx, json_object_get_string(slotJ)); + + + switch (format[++idx]) { + case 'd': + if (slotJ) targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"%d", json_object_get_int(slotJ)); + else targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"nil"); + arrayIdx++; + break; + case 'f': + if (slotJ) targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"%f", json_object_get_double(slotJ)); + else targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"nil"); + arrayIdx++; + break; + + case'%': + message[targetIdx]='%'; + targetIdx++; + break; + + case 's': + default: + if (slotJ) targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"%s", json_object_get_string(slotJ)); + else targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"nil"); + arrayIdx++; + } + + } else { + if (targetIdx >= LUA_MSG_MAX_LENGTH) { + AFB_WARNING ("LuaFormatMessage: message[%s] owerverflow LUA_MSG_MAX_LENGTH=%d", format, LUA_MSG_MAX_LENGTH); + targetIdx --; // move backward for EOL + break; + } else { + message[targetIdx++] = format[idx]; + } + } + } + message[targetIdx]='\0'; + +PrintMessage: + switch (action) { + case AFB_MSG_WARNING: + AFB_WARNING (message); + break; + case AFB_MSG_NOTICE: + AFB_NOTICE (message); + break; + case AFB_MSG_DEBUG: + AFB_DEBUG (message); + break; + case AFB_MSG_INFO: + AFB_INFO (message); + break; + case AFB_MSG_ERROR: + default: + AFB_ERROR (message); + } + return 0; // nothing return to lua + + OnErrorExit: // on argument to return (the error message) + return 1; +} + +STATIC int LuaPrintInfo(lua_State* luaState) { + int err=LuaFormatMessage (luaState, AFB_MSG_INFO); + return err; +} + +STATIC int LuaPrintError(lua_State* luaState) { + int err=LuaFormatMessage (luaState, AFB_MSG_ERROR); + return err; // no value return +} + +STATIC int LuaPrintWarning(lua_State* luaState) { + int err=LuaFormatMessage (luaState, AFB_MSG_WARNING); + return err; +} + +STATIC int LuaPrintNotice(lua_State* luaState) { + int err=LuaFormatMessage (luaState, AFB_MSG_NOTICE); + return err; +} + +STATIC int LuaPrintDebug(lua_State* luaState) { + int err=LuaFormatMessage (luaState, AFB_MSG_DEBUG); + return err; +} + +STATIC int LuaAfbSuccess(lua_State* luaState) { + LuaAfbContextT *afbContext= LuaCtxCheck(luaState, LUA_FIST_ARG); + if (!afbContext) goto OnErrorExit; + + // ignore context argument + json_object *responseJ= LuaPopArgs(luaState, LUA_FIST_ARG+1); + if (responseJ == JSON_ERROR) return 1; + + afb_req_success(afbContext->request, responseJ, NULL); + + LuaCtxFree(afbContext); + return 0; + + OnErrorExit: + lua_error(luaState); + return 1; +} + +STATIC int LuaAfbFail(lua_State* luaState) { + LuaAfbContextT *afbContext= LuaCtxCheck(luaState, LUA_FIST_ARG); + if (!afbContext) goto OnErrorExit; + + json_object *responseJ= LuaPopArgs(luaState, LUA_FIST_ARG+1); + if (responseJ == JSON_ERROR) return 1; + + afb_req_fail(afbContext->request, afbContext->info, json_object_get_string(responseJ)); + + LuaCtxFree(afbContext); + return 0; + + OnErrorExit: + lua_error(luaState); + return 1; +} + +STATIC void LuaAfbServiceCB(void *handle, int iserror, struct json_object *responseJ) { + LuaCallServiceT *contextCB= (LuaCallServiceT*)handle; + int count=1; + + lua_getglobal(luaState, contextCB->callback); + + // push error status & response + lua_pushboolean(luaState, iserror); + count+= LuaPushArgument(responseJ); + count+= LuaPushArgument(contextCB->context); + + int err=lua_pcall(luaState, count, LUA_MULTRET, 0); + if (err) { + AFB_ERROR ("LUA-SERICE-CB:FAIL response=%s err=%s", json_object_get_string(responseJ), lua_tostring(luaState,-1) ); + } + + free (contextCB); +} + + +STATIC int LuaAfbService(lua_State* luaState) { + int count = lua_gettop(luaState); + + // note: argument start at 2 because of AFB: table + if (count <5 || !lua_isstring(luaState, 2) || !lua_isstring(luaState, 3) || !lua_istable(luaState, 4) || !lua_isstring(luaState, 5)) { + lua_pushliteral (luaState, "LuaAfbServiceCall-Syntax is AFB:service_call (api, verb, query, callback, handle ...."); + goto OnErrorExit; + } + + // get api/verb+query + const char *api = lua_tostring(luaState,2); + const char *verb= lua_tostring(luaState,3); + json_object *queryJ= LuaTableToJson(luaState, 4); + if (queryJ == JSON_ERROR) return 1; + + LuaCallServiceT *contextCB = calloc (1, sizeof(LuaCallServiceT)); + contextCB->callback= lua_tostring(luaState, 5); + contextCB->context = LuaPopArgs(luaState, 6); + + afb_service_call(api, verb, queryJ, LuaAfbServiceCB, contextCB); + + return 0; // no value return + + OnErrorExit: + lua_error(luaState); + return 1; +} + +STATIC int LuaAfbServiceSync(lua_State* luaState) { + int count = lua_gettop(luaState); + json_object *responseJ; + + // note: argument start at 2 because of AFB: table + if (count <3 || !lua_isstring(luaState, 2) || !lua_isstring(luaState, 3) || !lua_istable(luaState, 4)) { + lua_pushliteral (luaState, "LuaAfbServiceSync-Syntax is error,data=AFB:service_call (api, verb, query)"); + goto OnErrorExit; + } + + // get api/verb+query + const char *api = lua_tostring(luaState,2); + const char *verb= lua_tostring(luaState,3); + json_object *queryJ= LuaTableToJson(luaState, 4); + + int iserror=afb_service_call_sync (api, verb, queryJ, &responseJ); + + // push error status & response + count=1; lua_pushboolean(luaState, iserror); + count+= LuaPushArgument(responseJ); + + return count; // return count values + + OnErrorExit: + lua_error(luaState); + return 1; +} + +STATIC int LuaAfbEventPush(lua_State* luaState) { + LuaAfbEvent *afbevt; + int index; + + // if no private event handle then use default binding event + if (lua_islightuserdata(luaState, LUA_FIST_ARG)) { + afbevt = (LuaAfbEvent*) lua_touserdata(luaState, LUA_FIST_ARG); + index=LUA_FIST_ARG+1; + } else { + index=LUA_FIST_ARG; + afbevt=luaDefaultEvt; + } + + if (!afb_event_is_valid(afbevt->event)) { + lua_pushliteral (luaState, "LuaAfbMakePush-Fail invalid event"); + goto OnErrorExit; + } + + json_object *ctlEventJ= LuaTableToJson(luaState, index); + if (!ctlEventJ) { + lua_pushliteral (luaState, "LuaAfbEventPush-Syntax is AFB:signal ([evtHandle], {lua table})"); + goto OnErrorExit; + } + + int done = afb_event_push(afbevt->event, ctlEventJ); + if (!done) { + lua_pushliteral (luaState, "LuaAfbEventPush-Fail No Subscriber to event"); + AFB_ERROR ("LuaAfbEventPush-Fail name subscriber event=%s count=%d", afbevt->name, afbevt->count); + goto OnErrorExit; + } + afbevt->count++; + return 0; + + OnErrorExit: + lua_error(luaState); + return 1; +} + +STATIC int LuaAfbEventSubscribe(lua_State* luaState) { + LuaAfbEvent *afbevt; + + LuaAfbContextT *afbContext= LuaCtxCheck(luaState, LUA_FIST_ARG); + if (!afbContext) { + lua_pushliteral (luaState, "LuaAfbEventSubscribe-Fail Invalid request handle"); + goto OnErrorExit; + } + + // if no private event handle then use default binding event + if (lua_islightuserdata(luaState, LUA_FIST_ARG+1)) { + afbevt = (LuaAfbEvent*) lua_touserdata(luaState, LUA_FIST_ARG+1); + } else { + afbevt=luaDefaultEvt; + } + + if (!afb_event_is_valid(afbevt->event)) { + lua_pushliteral (luaState, "LuaAfbMakePush-Fail invalid event handle"); + goto OnErrorExit; + } + + int err = afb_req_subscribe(afbContext->request, afbevt->event); + if (err) { + lua_pushliteral (luaState, "LuaAfbEventSubscribe-Fail No Subscriber to event"); + AFB_ERROR ("LuaAfbEventPush-Fail name subscriber event=%s count=%d", afbevt->name, afbevt->count); + goto OnErrorExit; + } + afbevt->count++; + return 0; + + OnErrorExit: + lua_error(luaState); + return 1; +} + +STATIC int LuaAfbEventMake(lua_State* luaState) { + int count = lua_gettop(luaState); + LuaAfbEvent *afbevt=calloc(1,sizeof(LuaAfbEvent)); + + if (count != LUA_FIST_ARG || !lua_isstring(luaState, LUA_FIST_ARG)) { + lua_pushliteral (luaState, "LuaAfbEventMake-Syntax is evtHandle= AFB:event ('myEventName')"); + goto OnErrorExit; + } + + // event name should be the only argument + afbevt->name= strdup (lua_tostring(luaState,LUA_FIST_ARG)); + + // create a new binder event + afbevt->event = afb_daemon_make_event(afbevt->name); + if (!afb_event_is_valid(afbevt->event)) { + lua_pushliteral (luaState, "LuaAfbEventMake-Fail to Create Binder event"); + goto OnErrorExit; + } + + // push event handler as a LUA opaque handle + lua_pushlightuserdata(luaState, afbevt); + return 1; + + OnErrorExit: + lua_error(luaState); + return 1; +} + +// Function call from LUA when lua2c plugin L2C is used +PUBLIC int Lua2cWrapper(lua_State* luaState, char *funcname, Lua2cFunctionT callback, void *context) { + + json_object *argsJ= LuaPopArgs(luaState, LUA_FIST_ARG+1); + int response = (*callback) (funcname, argsJ, context); + + // push response to LUA + lua_pushinteger(luaState, response); + return 1; +} + +// Generated some fake event based on watchdog/counter +PUBLIC int LuaCallFunc (DispatchSourceT source, DispatchActionT *action, json_object *queryJ) { + + int err, count; + + json_object* argsJ = action->argsJ; + const char* func = action->call; + + // load function (should exist in CONTROL_PATH_LUA + lua_getglobal(luaState, func); + + // push source on the stack + count=1; + lua_pushinteger(luaState, source); + + // push argsJ on the stack + if (!argsJ) { + lua_pushnil(luaState); + count++; + } else { + count+= LuaPushArgument (argsJ); + } + + // push queryJ on the stack + if (!queryJ) { + lua_pushnil(luaState); + count++; + } else { + count+= LuaPushArgument (queryJ); + } + + // effectively exec LUA script code + err=lua_pcall(luaState, count, 1, 0); + if (err) { + AFB_ERROR("LuaCallFunc Fail calling %s error=%s", func, lua_tostring(luaState,-1)); + goto OnErrorExit; + } + + // return LUA script value + int rc= (int)lua_tointeger(luaState, -1); + return rc; + + OnErrorExit: + return -1; +} + + +// Execute LUA code from received API request +STATIC void LuaDoAction (LuaDoActionT action, afb_req request) { + + int err, count=0; + + json_object* queryJ = afb_req_json(request); + + switch (action) { + + case LUA_DOSTRING: { + const char *script = json_object_get_string(queryJ); + err=luaL_loadstring(luaState, script); + if (err) { + AFB_ERROR ("LUA-DO-COMPILE:FAIL String=%s err=%s", script, lua_tostring(luaState,-1) ); + goto OnErrorExit; + } + // Push AFB client context on the stack + LuaAfbContextT *afbContext= LuaCtxPush(luaState, request,NULL,script); + if (!afbContext) goto OnErrorExit; + + break; + } + + case LUA_DOCALL: { + const char *func; + json_object *argsJ=NULL; + + err= wrap_json_unpack (queryJ, "{s:s, s?o !}", "target", &func, "args", &argsJ); + if (err) { + AFB_ERROR ("LUA-DOCALL-SYNTAX missing target|args query=%s", json_object_get_string(queryJ)); + goto OnErrorExit; + } + + // load function (should exist in CONTROL_PATH_LUA + lua_getglobal(luaState, func); + + // Push AFB client context on the stack + LuaAfbContextT *afbContext= LuaCtxPush(luaState, request, NULL, func); + if (!afbContext) goto OnErrorExit; + + // push query on the stack + if (!argsJ) { + lua_pushnil(luaState); + count++; + } else { + count+= LuaPushArgument (argsJ); + } + + break; + } + + case LUA_DOSCRIPT: { // Fulup need to fix argument passing + const char *script; + char*func=NULL; + char *filename; char*fullpath; + char luaScriptPath[CONTROL_MAXPATH_LEN]; + json_object *argsJ=NULL; + int index; + + // scan luascript search path once + static json_object *luaScriptPathJ =NULL; + + err= wrap_json_unpack (queryJ, "{s:s, s?s s?o !}", "target", &script,"function", &func, "args", &argsJ); + if (err) { + AFB_ERROR ("LUA-DOSCRIPT-SYNTAX:missing script|(args,arg) query=%s", json_object_get_string(queryJ)); + goto OnErrorExit; + } + + // search for filename=script in CONTROL_LUA_PATH + if (!luaScriptPathJ) luaScriptPathJ= ScanForConfig(CONTROL_LUA_PATH , CTL_SCAN_RECURSIVE,CONTROL_DOSCRIPT_PRE "-", script); + for (index=0; index < json_object_array_length(luaScriptPathJ); index++) { + json_object *entryJ=json_object_array_get_idx(luaScriptPathJ, index); + + err= wrap_json_unpack (entryJ, "{s:s, s:s !}", "fullpath", &fullpath,"filename", &filename); + if (err) { + AFB_ERROR ("LUA-DOSCRIPT-SCAN:HOOPs invalid config file path = %s", json_object_get_string(entryJ)); + goto OnErrorExit; + } + + if (index > 0) AFB_WARNING("LUA-DOSCRIPT-SCAN:Ignore second script=%s path=%s", filename, fullpath); + else { + strncpy (luaScriptPath, fullpath, sizeof(luaScriptPath)); + strncat (luaScriptPath, "/", sizeof(luaScriptPath)); + strncat (luaScriptPath, filename, sizeof(luaScriptPath)); + } + } + + err= luaL_loadfile(luaState, luaScriptPath); + if (err) { + AFB_ERROR ("LUA-DOSCRIPT HOOPs Error in LUA loading scripts=%s err=%s", luaScriptPath, lua_tostring(luaState,-1)); + goto OnErrorExit; + } + + // script was loaded we need to parse to make it executable + err=lua_pcall(luaState, 0, 0, 0); + if (err) { + AFB_ERROR ("LUA-DOSCRIPT:FAIL to load %s", luaScriptPath); + goto OnErrorExit; + } + + // if no func name given try to deduct from filename + if (!func && (func=(char*)GetMidleName(filename))!=NULL) { + strncpy(luaScriptPath,"_", sizeof(luaScriptPath)); + strncat(luaScriptPath,func, sizeof(luaScriptPath)); + func=luaScriptPath; + } + if (!func) { + AFB_ERROR ("LUA-DOSCRIPT:FAIL to deduct funcname from %s", filename); + goto OnErrorExit; + } + + // load function (should exist in CONTROL_PATH_LUA + lua_getglobal(luaState, func); + + // Push AFB client context on the stack + LuaAfbContextT *afbContext= LuaCtxPush(luaState, request, NULL, func); + if (!afbContext) goto OnErrorExit; + + // push function arguments + if (!argsJ) { + lua_pushnil(luaState); + count++; + } else { + count+= LuaPushArgument(argsJ); + } + + break; + } + + default: + AFB_ERROR ("LUA-DOSCRIPT-ACTION unknown query=%s", json_object_get_string(queryJ)); + goto OnErrorExit; + } + + // effectively exec LUA code (afb_reply/fail done later from callback) + err=lua_pcall(luaState, count+1, 0, 0); + if (err) { + AFB_ERROR ("LUA-DO-EXEC:FAIL query=%s err=%s", json_object_get_string(queryJ), lua_tostring(luaState,-1)); + goto OnErrorExit; + } + return; + + OnErrorExit: + afb_req_fail(request,"LUA:ERROR", lua_tostring(luaState,-1)); + return; +} + +PUBLIC void ctlapi_execlua (afb_req request) { + LuaDoAction (LUA_DOSTRING, request); +} + +PUBLIC void ctlapi_request (afb_req request) { + LuaDoAction (LUA_DOCALL, request); +} + +PUBLIC void ctlapi_scriptlua (afb_req request) { + LuaDoAction (LUA_DOSCRIPT, request); +} + +STATIC int LuaTimerClear (lua_State* luaState) { + + // Get Timer Handle + LuaAfbContextT *afbContext= LuaCtxCheck(luaState, LUA_FIST_ARG); + if (!afbContext) goto OnErrorExit; + + // retrieve useful information opaque handle + TimerHandleT *timerHandle = (TimerHandleT*)afbContext->handle; + + AFB_NOTICE ("LuaTimerClear timer=%s", timerHandle->label); + TimerEvtStop(timerHandle); + + return 0; //happy end + +OnErrorExit: + return 1; +} +STATIC int LuaTimerGet (lua_State* luaState) { + + // Get Timer Handle + LuaAfbContextT *afbContext= LuaCtxCheck(luaState, LUA_FIST_ARG); + if (!afbContext) goto OnErrorExit; + + // retrieve useful information opaque handle + TimerHandleT *timerHandle = (TimerHandleT*)afbContext->handle; + + // create response as a JSON object + json_object *responseJ= json_object_new_object(); + json_object_object_add(responseJ,"label", json_object_new_string(timerHandle->label)); + json_object_object_add(responseJ,"delay", json_object_new_int(timerHandle->delay)); + json_object_object_add(responseJ,"count", json_object_new_int(timerHandle->count)); + + // return JSON object as Lua table + int count=LuaPushArgument(responseJ); + + // free json object + json_object_put(responseJ); + + return count; // return argument + +OnErrorExit: + return 0; +} + +// Timer Callback + +// Set timer +STATIC int LuaTimerSetCB (void *handle) { + LuaCallServiceT *contextCB =(LuaCallServiceT*) handle; + TimerHandleT *timerHandle = (TimerHandleT*) contextCB->handle; + int count; + + // push timer handle and user context on Lua stack + lua_getglobal(luaState, contextCB->callback); + + // Push timer handle + LuaAfbContextT *afbContext= LuaCtxPush(luaState, NULL_AFBREQ, contextCB->handle, timerHandle->label); + if (!afbContext) goto OnErrorExit; + count=1; + + // Push user Context + count+= LuaPushArgument(contextCB->context); + + int err=lua_pcall(luaState, count, LUA_MULTRET, 0); + if (err) { + AFB_ERROR ("LUA-TIMER-CB:FAIL response=%s err=%s", json_object_get_string(contextCB->context), lua_tostring(luaState,-1)); + goto OnErrorExit; + } + + // get return parameter + if (!lua_isboolean(luaState, -1)) { + return (lua_toboolean(luaState, -1)); + } + + // timer last run free context resource + if (timerHandle->count == 1) { + LuaCtxFree(afbContext); + } + return 0; // By default we are happy + + OnErrorExit: + return 1; // stop timer +} + +STATIC int LuaTimerSet(lua_State* luaState) { + const char *label=NULL, *info=NULL; + int delay=0, count=0; + + json_object *timerJ = LuaPopOneArg(luaState, LUA_FIST_ARG); + const char *callback = lua_tostring(luaState, LUA_FIST_ARG + 1); + json_object *contextJ = LuaPopOneArg(luaState, LUA_FIST_ARG + 2); + + if (lua_gettop(luaState) != LUA_FIST_ARG+2 || !timerJ || !callback || !contextJ) { + lua_pushliteral(luaState, "LuaTimerSet-Syntax timerset (timerT, 'callback', contextT)"); + goto OnErrorExit; + } + + int err = wrap_json_unpack(timerJ, "{ss, s?s si, si !}", "label", &label, "info", &info, "delay", &delay, "count", &count); + if (err) { + lua_pushliteral(luaState, "LuaTimerSet-Syntax timerT={label:xxx delay:ms, count:xx}"); + goto OnErrorExit; + } + + // everything look fine create timer structure + TimerHandleT *timerHandle = malloc (sizeof (TimerHandleT)); + timerHandle->delay=delay; + timerHandle->count=count; + timerHandle->label=label; + + // Allocate handle to store context and callback + LuaCallServiceT *contextCB = calloc (1, sizeof(LuaCallServiceT)); + contextCB->callback= callback; + contextCB->context = contextJ; + contextCB->handle = timerHandle; + + // fire timer + TimerEvtStart (timerHandle, LuaTimerSetCB, contextCB); + + return 0; // Happy No Return Function + +OnErrorExit: + lua_error(luaState); + return 1; // return error code +} + +// Register a new L2c list of LUA user plugin commands +PUBLIC void LuaL2cNewLib(const char *label, luaL_Reg *l2cFunc, int count) { + // luaL_newlib(luaState, l2cFunc); macro does not work with pointer :( + luaL_checkversion(luaState); + lua_createtable(luaState, 0, count+1); + luaL_setfuncs(luaState,l2cFunc,0); + lua_setglobal(luaState, label); +} + +static const luaL_Reg afbFunction[] = { + {"timerclear", LuaTimerClear}, + {"timerget" , LuaTimerGet}, + {"timerset" , LuaTimerSet}, + {"notice" , LuaPrintNotice}, + {"info" , LuaPrintInfo}, + {"warning" , LuaPrintWarning}, + {"debug" , LuaPrintDebug}, + {"error" , LuaPrintError}, + {"servsync" , LuaAfbServiceSync}, + {"service" , LuaAfbService}, + {"success" , LuaAfbSuccess}, + {"fail" , LuaAfbFail}, + {"subscribe" , LuaAfbEventSubscribe}, + {"evtmake" , LuaAfbEventMake}, + {"evtpush" , LuaAfbEventPush}, + + {NULL, NULL} /* sentinel */ +}; + +// Create Binding Event at Init +PUBLIC int LuaLibInit () { + int err, index; + + // search for default policy config file + char fullprefix[CONTROL_MAXPATH_LEN]; + strncpy (fullprefix, CONTROL_CONFIG_PRE "-", sizeof(fullprefix)); + strncat (fullprefix, GetBinderName(), sizeof(fullprefix)); + strncat (fullprefix, "-", sizeof(fullprefix)); + + const char *dirList= getenv("CONTROL_LUA_PATH"); + if (!dirList) dirList=CONTROL_LUA_PATH; + + json_object *luaScriptPathJ = ScanForConfig(dirList , CTL_SCAN_RECURSIVE, fullprefix, "lua"); + + // open a new LUA interpretor + luaState = luaL_newstate(); + if (!luaState) { + AFB_ERROR ("LUA_INIT: Fail to open lua interpretor"); + goto OnErrorExit; + } + + // load auxiliary libraries + luaL_openlibs(luaState); + + // redirect print to AFB_NOTICE + luaL_newlib(luaState, afbFunction); + lua_setglobal(luaState, "AFB"); + + // create default lua event to send test pause/resume + luaDefaultEvt=calloc(1,sizeof(LuaAfbEvent)); + luaDefaultEvt->name=CONTROL_LUA_EVENT; + luaDefaultEvt->event = afb_daemon_make_event(CONTROL_LUA_EVENT); + if (!afb_event_is_valid(luaDefaultEvt->event)) { + AFB_ERROR ("POLCTL_INIT: Cannot register lua-events=%s ", CONTROL_LUA_EVENT); + goto OnErrorExit;; + } + + // load+exec any file found in LUA search path + for (index=0; index < json_object_array_length(luaScriptPathJ); index++) { + json_object *entryJ=json_object_array_get_idx(luaScriptPathJ, index); + + char *filename; char*fullpath; + err= wrap_json_unpack (entryJ, "{s:s, s:s !}", "fullpath", &fullpath,"filename", &filename); + if (err) { + AFB_ERROR ("LUA-INIT HOOPs invalid config file path = %s", json_object_get_string(entryJ)); + goto OnErrorExit; + } + + char filepath[CONTROL_MAXPATH_LEN]; + strncpy(filepath, fullpath, sizeof(filepath)); + strncat(filepath, "/", sizeof(filepath)); + strncat(filepath, filename, sizeof(filepath)); + err= luaL_loadfile(luaState, filepath); + if (err) { + AFB_ERROR ("LUA-LOAD HOOPs Error in LUA loading scripts=%s err=%s", filepath, lua_tostring(luaState,-1)); + goto OnErrorExit; + } + + // exec/compil script + err = lua_pcall(luaState, 0, 0, 0); + if (err) { + AFB_ERROR ("LUA-LOAD HOOPs Error in LUA exec scripts=%s err=%s", filepath, lua_tostring(luaState,-1)); + goto OnErrorExit; + } + } + + // no policy config found remove control API from binder + if (index == 0) { + AFB_WARNING ("POLICY-INIT:WARNING (setenv CONTROL_LUA_PATH) No LUA '%s*.lua' in '%s'", fullprefix, dirList); + } + + AFB_DEBUG ("Audio control-LUA Init Done"); + return 0; + + OnErrorExit: + return 1; +} +
\ No newline at end of file diff --git a/Controller-afb/ctl-plugin-sample.c b/Controller-afb/ctl-plugin-sample.c new file mode 100644 index 0000000..1d66802 --- /dev/null +++ b/Controller-afb/ctl-plugin-sample.c @@ -0,0 +1,134 @@ +/* + * Copyright (C) 2016 "IoT.bzh" + * Author Fulup Ar Foll <fulup@iot.bzh> + * + * 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. + * + * Sample plugin for Controller + */ + + +#define _GNU_SOURCE +#include <stdio.h> +#include <string.h> + +#include "ctl-binding.h" + +#define MY_PLUGIN_MAGIC 987654321 + +typedef struct { + int magic; + int count; +} MyPluginCtxT; + +STATIC const char* jsonToString (json_object *valueJ) { + const char *value; + if (valueJ) + value=json_object_get_string(valueJ); + else + value="NULL"; + + return value; +} + +// Declare this sharelib as a Controller Plugin +CTLP_REGISTER("MyCtlSamplePlugin"); + +// Call at initialisation time +PUBLIC CTLP_ONLOAD(label, version, info) { + MyPluginCtxT *pluginCtx= (MyPluginCtxT*)calloc (1, sizeof(MyPluginCtxT)); + pluginCtx->magic = MY_PLUGIN_MAGIC; + pluginCtx->count = -1; + + AFB_NOTICE ("CONTROLLER-PLUGIN-SAMPLE:Onload label=%s version=%s info=%s", label, info, version); + return (void*)pluginCtx; +} + +PUBLIC CTLP_CAPI (SamplePolicyInit, source, label, argsJ, queryJ, context) { + MyPluginCtxT *pluginCtx= (MyPluginCtxT*)context; + if (!context || pluginCtx->magic != MY_PLUGIN_MAGIC) { + AFB_ERROR("CONTROLLER-PLUGIN-SAMPLE:SamplePolicyInit (Hoops) Invalid Sample Plugin Context"); + return -1; + }; + + pluginCtx->count = 0; + AFB_NOTICE ("CONTROLLER-PLUGIN-SAMPLE:Init label=%s args=%s\n", label, jsonToString(argsJ)); + return 0; +} + +PUBLIC CTLP_CAPI (sampleControlMultimedia, source, label, argsJ,queryJ,context) { + MyPluginCtxT *pluginCtx= (MyPluginCtxT*)context; + + if (!context || pluginCtx->magic != MY_PLUGIN_MAGIC) { + AFB_ERROR("CONTROLLER-PLUGIN-SAMPLE:sampleControlMultimedia (Hoops) Invalid Sample Plugin Context"); + return -1; + }; + pluginCtx->count++; + AFB_NOTICE ("CONTROLLER-PLUGIN-SAMPLE:sampleControlMultimedia SamplePolicyCount action=%s args=%s query=%s count=%d" + , label, jsonToString(argsJ), jsonToString(queryJ), pluginCtx->count); + return 0; +} + +PUBLIC CTLP_CAPI (sampleControlNavigation, source, label, argsJ, queryJ, context) { + MyPluginCtxT *pluginCtx= (MyPluginCtxT*)context; + + if (!context || pluginCtx->magic != MY_PLUGIN_MAGIC) { + AFB_ERROR("CONTROLLER-PLUGIN-SAMPLE:sampleControlNavigation (Hoops) Invalid Sample Plugin Context"); + return -1; + }; + pluginCtx->count++; + AFB_NOTICE ("CONTROLLER-PLUGIN-SAMPLE:sampleControlNavigation SamplePolicyCount action=%s args=%s query=%s count=%d" + ,label, jsonToString(argsJ), jsonToString(queryJ), pluginCtx->count); + return 0; +} + +PUBLIC CTLP_CAPI (SampleControlEvent, source, label, argsJ, queryJ, context) { + MyPluginCtxT *pluginCtx= (MyPluginCtxT*)context; + + if (!context || pluginCtx->magic != MY_PLUGIN_MAGIC) { + AFB_ERROR("CONTROLLER-PLUGIN-SAMPLE:cousampleControlMultimediant (Hoops) Invalid Sample Plugin Context"); + return -1; + }; + pluginCtx->count++; + AFB_NOTICE ("CONTROLLER-PLUGIN-SAMPLE:sampleControlMultimedia SamplePolicyCount action=%s args=%s query=%s count=%d" + ,label, jsonToString(argsJ), jsonToString(queryJ), pluginCtx->count); + return 0; +} + +// This function is a LUA function. Lua2CHelloWorld label should be declare in the "onload" section of JSON config file +PUBLIC CTLP_LUA2C (Lua2cHelloWorld1, label, argsJ, context) { + MyPluginCtxT *pluginCtx= (MyPluginCtxT*)context; + + if (!context || pluginCtx->magic != MY_PLUGIN_MAGIC) { + AFB_ERROR("CONTROLLER-PLUGIN-SAMPLE:Lua2cHelloWorld1 (Hoops) Invalid Sample Plugin Context"); + return -1; + }; + pluginCtx->count++; + AFB_NOTICE ("CONTROLLER-PLUGIN-SAMPLE:Lua2cHelloWorld1 SamplePolicyCount action=%s args=%s count=%d" + ,label, jsonToString(argsJ), pluginCtx->count); + return 0; +} + +// This function is a LUA function. Lua2CHelloWorld label should be declare in the "onload" section of JSON config file +PUBLIC CTLP_LUA2C (Lua2cHelloWorld2, label, argsJ, context) { + MyPluginCtxT *pluginCtx= (MyPluginCtxT*)context; + + if (!context || pluginCtx->magic != MY_PLUGIN_MAGIC) { + AFB_ERROR("CONTROLLER-PLUGIN-SAMPLE:Lua2cHelloWorld2 (Hoops) Invalid Sample Plugin Context"); + return -1; + }; + pluginCtx->count++; + AFB_NOTICE ("CONTROLLER-PLUGIN-SAMPLE:Lua2cHelloWorld2 SamplePolicyCount action=%s args=%s count=%d" + ,label, jsonToString(argsJ), pluginCtx->count); + return 0; +} diff --git a/Controller-afb/ctl-policy.c b/Controller-afb/ctl-policy.c new file mode 100644 index 0000000..e9798b3 --- /dev/null +++ b/Controller-afb/ctl-policy.c @@ -0,0 +1,221 @@ +/* + * Copyright (C) 2016 "IoT.bzh" + * Author Fulup Ar Foll <fulup@iot.bzh> + * + * 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, something express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define _GNU_SOURCE +#include <stdio.h> +#include <string.h> +#include <dirent.h> +#include <json-c/json_object.h> + +#include "wrap-json.h" +#include "ctl-binding.h" + +STATIC PolicyCtlConfigT *ctlHandle = NULL; + +// List Avaliable Configuration Files +STATIC json_object* ScanForConfig (char* searchPath) { + json_object *responseJ; + DIR *dirHandle; + char *dirPath; + char* dirList= strdup(searchPath); + + responseJ = json_object_new_array(); + for (dirPath= strtok(dirList, ":"); dirPath && *dirPath; dirPath=strtok(NULL,":")) { + struct dirent *dirEnt; + + dirHandle = opendir (dirPath); + if (!dirHandle) { + AFB_NOTICE ("CONFIG-SCANNING dir=%s not readable", dirPath); + continue; + } + + AFB_NOTICE ("CONFIG-SCANNING:ctl_listconfig scanning: %s", dirPath); + while ((dirEnt = readdir(dirHandle)) != NULL) { + // Unknown type is accepted to support dump filesystems + if (dirEnt->d_type == DT_REG || dirEnt->d_type == DT_UNKNOWN) { + struct json_object *pathJ = json_object_new_object(); + json_object_object_add(pathJ, "dirpath", json_object_new_string(dirPath)); + json_object_object_add(pathJ, "filename", json_object_new_string(dirEnt->d_name)); + json_object_array_add(responseJ, pathJ); + } + } + } + + free (dirList); + return (responseJ); +} + +PUBLIC void ctlapi_authorize (PolicyCtlEnumT control, afb_req request) { + json_object*tmpJ; + + json_object* queryJ= afb_req_json(request); + int done=json_object_object_get_ex(queryJ, "closing", &tmpJ); + if (done) return; + +} + + +// List Avaliable Configuration Files +PUBLIC void ctlapi_config (struct afb_req request) { + json_object*tmpJ; + char *dirList; + + json_object* queryJ = afb_req_json(request); + if (queryJ && json_object_object_get_ex (queryJ, "cfgpath" , &tmpJ)) { + dirList = strdup (json_object_get_string(tmpJ)); + } else { + dirList = strdup (CONTROL_CONFIG_PATH); + AFB_NOTICE ("CONFIG-MISSING: use default CONTROL_CONFIG_PATH=%s", CONTROL_CONFIG_PATH); + } + + // get list of config file + struct json_object *responseJ = ScanForConfig(dirList); + + if (json_object_array_length(responseJ) == 0) { + afb_req_fail(request, "CONFIGPATH:EMPTY", "No Config Found in CONTROL_CONFIG_PATH"); + } else { + afb_req_success(request, responseJ, NULL); + } + + return; +} + +STATIC PolicyActionT **PolicyLoadActions (json_object *actionsJ) { + int err; + PolicyActionT ** actions; + + // unpack individual action object + int actionUnpack (json_object *actionJ, PolicyActionT *action) { + + err= wrap_json_unpack(actionJ, "{ss,s?s,s?s,s?s,s?s,s?s !}" + , "label",&action->label, "info",&action->info, "callback",&action->callback, "query",&queryJ, "api",&action->api, "verb", &action->verb); + if (err) { + AFB_ERROR ("POLICY-LOAD-ACTION Missing something label|info|callback|api|verb|query in %s", json_object_get_string(actionJ)); + return -1; + } + if (!action->callback || !(action->api && action->verb)) { + AFB_ERROR ("POLICY-LOAD-ACTION Missing something callback|(api+verb) in %s", json_object_get_string(actionJ)); + return -1; + } + return 0; + }; + + // action array is close with a nullvalue; + if (json_object_get_type(actionsJ) == json_type_array) { + int count = json_object_array_length(actionsJ); + actions = calloc (count+1, sizeof(PolicyActionT)); + + for (int idx=0; idx < count; idx++) { + json_object *actionJ = json_object_array_get_idx(actionsJ, idx); + err = actionUnpack (actionJ, &actions[idx]); + if (err) goto OnErrorExit; + } + + } else { + actions = calloc (2, sizeof(PolicyActionT)); + err = actionUnpack (actionsJ, &actions[0]); + if (err) goto OnErrorExit; + } + + return actions; + + OnErrorExit: + return NULL; + +} + +// load control policy from file using json_unpack https://jansson.readthedocs.io/en/2.9/apiref.html#parsing-and-validating-values +STATIC PolicyCtlConfigT *PolicyLoadConfig (const char* filepath) { + json_object *policyConfigJ, *ignoreJ, *actionsJ; + PolicyCtlConfigT *policyConfig = calloc (1, sizeof(PolicyCtlConfigT)); + int err; + + // Load JSON file + policyConfigJ= json_object_from_file(filepath); + if (!policyConfigJ) goto OnErrorExit; + + json_object *metadataJ, *onloadJ, *controlsJ, *eventsJ; + err= wrap_json_unpack(policyConfigJ, "{s?o,so,s?o,so,so !}", "$schema", &ignoreJ, "metadata",&metadataJ, "onload",&onloadJ, "controls",&controlsJ, "events",&eventsJ); + if (err) { + AFB_ERROR ("POLICY-LOAD-ERRROR Missing something metadata|onload|controls|events in %s", json_object_get_string(policyConfigJ)); + goto OnErrorExit; + } + + PolicyHandleT *policyHandle = calloc (1, sizeof(PolicyHandleT)); + err= wrap_json_unpack(metadataJ, "{so,s?s,s?s !}", "label", &policyHandle->label, "info",&policyHandle->info, "version",&policyHandle->version); + if (err) { + AFB_ERROR ("POLICY-LOAD-CONFIG Missing something label|info|version in %s", json_object_get_string(metadataJ)); + goto OnErrorExit; + } + + if (onloadJ) { + err= wrap_json_unpack(onloadJ, "{s?o,s?s,s?s !}", "info",&ignoreJ, "label",&ignoreJ, "actions",&actionsJ); + if (err) { + AFB_ERROR ("POLICY-LOAD-CONFIG Missing something label|info|plugin|actions in %s", json_object_get_string(metadataJ)); + goto OnErrorExit; + } + policyConfig->onload = PolicyLoadActions (actionsJ); + } + + return policyControl; + +OnErrorExit: + return NULL; +} + +// Load default config file at init +PUBLIC int PolicyInit () { + int index, err; + + + // search for default policy config file + json_object* responseJ = ScanForConfig(CONTROL_CONFIG_PATH); + + for (index=0; index < json_object_array_length(responseJ); index++) { + json_object *entryJ=json_object_array_get_idx(responseJ, index); + + char *filename; char*dirpath; + err= wrap_json_unpack (entryJ, "{s:s, s:s !}", "dirpath", &dirpath,"filename", &filename); + if (err) { + AFB_ERROR ("POLICY-INIT HOOPs invalid config file path = %s", json_object_get_string(entryJ)); + goto OnErrorExit; + } + + if (strcasestr(filename, CONTROL_CONFIG_FILE)) { + char filepath[255]; + strncpy(filepath, dirpath, sizeof(filepath)); + strncat(filepath, "/", sizeof(filepath)); + strncat(filepath, filename, sizeof(filepath)); + ctlHandle = PolicyLoadConfig (filepath); + if (!ctlHandle) goto OnErrorExit; + break; + } + } + + // no policy config found remove control API from binder + if (index == 0) goto OnErrorExit; + + AFB_NOTICE ("SUCCES: Audio Control Policy Init"); + return 0; + +OnErrorExit: + AFB_NOTICE ("ERROR: Audio Control Policy Init"); + return 1; +} + + + diff --git a/Controller-afb/ctl-timer.c b/Controller-afb/ctl-timer.c new file mode 100644 index 0000000..a826f9f --- /dev/null +++ b/Controller-afb/ctl-timer.c @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2016 "IoT.bzh" + * Author Fulup Ar Foll <fulup@iot.bzh> + * + * 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 +#include <stdio.h> +#include <string.h> +#include <time.h> +#include <systemd/sd-event.h> + +#include "ctl-binding.h" + +#define DEFAULT_PAUSE_DELAY 3000 +#define DEFAULT_TEST_COUNT 1 +typedef struct { + int value; + const char *label; +} AutoTestCtxT; + +static afb_event afbevt; + +STATIC int TimerNext (sd_event_source* source, uint64_t timer, void* handle) { + TimerHandleT *timerHandle = (TimerHandleT*) handle; + int done; + uint64_t usec; + + // Rearm timer if needed + timerHandle->count --; + if (timerHandle->count == 0) { + sd_event_source_unref(source); + free (handle); + return 0; + } + else { + // otherwise validate timer for a new run + sd_event_now(afb_daemon_get_event_loop(), CLOCK_MONOTONIC, &usec); + sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); + sd_event_source_set_time(source, usec + timerHandle->delay*1000); + } + + done= timerHandle->callback(timerHandle->context); + if (!done) goto OnErrorExit; + + return 0; + +OnErrorExit: + AFB_WARNING("TimerNext Callback Fail Tag=%s", timerHandle->label); + return -1; +} + +PUBLIC void TimerEvtStop(TimerHandleT *timerHandle) { + + sd_event_source_unref(timerHandle->evtSource); + free (timerHandle); +} + + +PUBLIC void TimerEvtStart(TimerHandleT *timerHandle, timerCallbackT callback, void *context) { + uint64_t usec; + + // populate CB handle + timerHandle->callback=callback; + timerHandle->context=context; + + // set a timer with ~250us accuracy + sd_event_now(afb_daemon_get_event_loop(), CLOCK_MONOTONIC, &usec); + sd_event_add_time(afb_daemon_get_event_loop(), &timerHandle->evtSource, CLOCK_MONOTONIC, usec+timerHandle->delay*1000, 250, TimerNext, timerHandle); +} + +PUBLIC afb_event TimerEvtGet(void) { + return afbevt; +} + + +// Create Binding Event at Init +PUBLIC int TimerEvtInit () { + + // create binder event to send test pause/resume + afbevt = afb_daemon_make_event("control"); + if (!afb_event_is_valid(afbevt)) { + AFB_ERROR ("POLCTL_INIT: Cannot register ctl-events"); + return 1; + } + + AFB_DEBUG ("Audio Control-Events Init Done"); + return 0; +} + |