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/*
* 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 "filescan-utils.h"
#include "ctl-config.h"
// Load control config file
char* CtlConfigSearch(const char *dirList, const char* fileName) {
int index;
char controlFile [CONTROL_MAXPATH_LEN];
if(fileName) {
strncpy(controlFile, fileName, CONTROL_MAXPATH_LEN);
} else {
strncpy(controlFile, CONTROL_CONFIG_PRE "-", CONTROL_MAXPATH_LEN);
strncat(controlFile, GetBinderName(), strlen(GetBinderName())); // Only possible because returned GetBinderName value is a static variable.
}
// 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;
int err = wrap_json_unpack(entryJ, "{s:s, s:s !}", "fullpath", &fullpath, "filename", &filename);
if (err) {
AFB_ERROR("CTL-INIT HOOPs invalid JSON entry= %s", json_object_get_string(entryJ));
return NULL;
}
if (index == 0) {
if (strcasestr(filename, controlFile)) {
char filepath[CONTROL_MAXPATH_LEN];
strncpy(filepath, fullpath, strlen(fullpath));
strncat(filepath, "/", strlen("/"));
strncat(filepath, filename, strlen(filename));
return (strdup(filepath));
}
}
}
// no config found
return NULL;
}
json_object* loadJSON(const char* filepath, const char* fileName)
{
// Search for config in filepath
const char* filepathFound = CtlConfigSearch(filepath, fileName);
if(!filepathFound)
{
AFB_ERROR("CTL-LOAD-CONFIG No JSON Config found in %s", filepath);
return NULL;
}
return json_object_from_file(filepathFound);
}
int browseAdditionnalFiles(CtlConfigT* ctlConfig, const char* filepath, int sectionIdx){
int err = 0;
int done = 0;
const char* fileName;
json_object* configJ = NULL, *sectionJ = NULL;
CtlSectionT* sections = ctlConfig->sections;
if (json_object_get_type(ctlConfig->filesJ) == json_type_array) {
int filesEnd = json_object_array_length(ctlConfig->filesJ);
for (int jdx = 0; jdx < filesEnd; jdx++) {
fileName = json_object_get_string(json_object_array_get_idx(ctlConfig->filesJ, jdx));
configJ = loadJSON(filepath, fileName);
if(json_object_object_get_ex(configJ, sections[sectionIdx].key, §ionJ))
{
err += sections[sectionIdx].loadCB(§ions[sectionIdx], sectionJ);
done++;
}
}
if(!done) {
AFB_ERROR("CtlConfigLoad: fail to find '%s' section in config '%s' with '%s' in its name", sections[sectionIdx].key, filepath, fileName);
err++;
}
if(err) {goto OnErrorExit;}
} else {
fileName = json_object_get_string(ctlConfig->filesJ);
configJ = loadJSON(filepath, fileName);
if(json_object_object_get_ex(configJ, sections[sectionIdx].key, §ionJ)) {
err += sections[sectionIdx].loadCB(§ions[sectionIdx], sectionJ);
done++;
}
else {
AFB_ERROR("CtlConfigLoad: fail to find '%s' section in config '%s' with '%s' in its name", sections[sectionIdx].key, filepath, fileName);
err++;
}
if(err) {goto OnErrorExit;}
}
return err;
OnErrorExit:
return err;
}
int CtlConfigExec(CtlConfigT *ctlConfig) {
// best effort to initialise everything before starting
if (ctlConfig->requireJ) {
void DispatchRequireOneApi(json_object * bindindJ) {
const char* requireBinding = json_object_get_string(bindindJ);
int err = afb_daemon_require_api(requireBinding, 1);
if (err) {
AFB_WARNING("CTL-LOAD-CONFIG:REQUIRE Fail to get=%s", requireBinding);
}
}
if (json_object_get_type(ctlConfig->requireJ) == json_type_array) {
for (int idx = 0; idx < json_object_array_length(ctlConfig->requireJ); idx++) {
DispatchRequireOneApi(json_object_array_get_idx(ctlConfig->requireJ, idx));
}
} else {
DispatchRequireOneApi(ctlConfig->requireJ);
}
}
#ifdef CONTROL_SUPPORT_LUA
int err= LuaConfigExec();
if (err) goto OnErrorExit;
#endif
// Loop on every section and process config
int errcount=0;
for (int idx = 0; ctlConfig->sections[idx].key != NULL; idx++) {
errcount += ctlConfig->sections[idx].loadCB(&ctlConfig->sections[idx], NULL);
}
return errcount;
OnErrorExit:
return 1;
}
CtlConfigT *CtlConfigLoad(const char* filepath, CtlSectionT *sections) {
json_object *ctlConfigJ;
CtlConfigT *ctlConfig = calloc(1, sizeof (CtlConfigT));
int err;
#ifdef CONTROL_SUPPORT_LUA
err = LuaConfigLoad();
if (err) goto OnErrorExit;
#endif
// Load JSON file
ctlConfigJ = loadJSON(filepath, NULL);
if (!ctlConfigJ) {
AFB_ERROR("CTL-LOAD-CONFIG Invalid JSON %s ", filepath);
goto OnErrorExit;
}
AFB_INFO("CTL-LOAD-CONFIG: loading config filepath=%s", filepath);
json_object *metadataJ;
int done = json_object_object_get_ex(ctlConfigJ, "metadata", &metadataJ);
if (done) {
err = wrap_json_unpack(metadataJ, "{ss,ss,ss,s?s,s?o,s?o !}",
"label", &ctlConfig->label,
"version", &ctlConfig->version,
"api", &ctlConfig->api,
"info", &ctlConfig->info,
"require", &ctlConfig->requireJ,
"files",&ctlConfig->filesJ);
if (err) {
AFB_ERROR("CTL-LOAD-CONFIG:METADATA Missing something label|api|version|[info]|[require] in:\n-- %s", json_object_get_string(metadataJ));
goto OnErrorExit;
}
// Should replace this with API name change
if (ctlConfig->api) {
err = afb_daemon_rename_api(ctlConfig->api);
if (err) AFB_WARNING("Fail to rename api to:%s", ctlConfig->api);
}
}
//load config sections
err = 0;
ctlConfig->sections = sections;
for (int idx = 0; sections[idx].key != NULL; idx++) {
json_object * sectionJ = NULL;
int done = json_object_object_get_ex(ctlConfigJ, sections[idx].key, §ionJ);
if (!done) {
AFB_DEBUG("CtlConfigLoad: fail to find '%s' section in config '%s'. Searching deeper", sections[idx].key, filepath);
err += browseAdditionnalFiles(ctlConfig, filepath, idx);
} else {
err += sections[idx].loadCB(§ions[idx], sectionJ);
}
}
if (err) goto OnErrorExit;
return (ctlConfig);
OnErrorExit:
free(ctlConfig);
return NULL;
}
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