diff options
Diffstat (limited to 'afb-source/ctl-policy.c')
| -rw-r--r-- | afb-source/ctl-policy.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/afb-source/ctl-policy.c b/afb-source/ctl-policy.c new file mode 100644 index 0000000..e9798b3 --- /dev/null +++ b/afb-source/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; +} + + + |