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Wvader 2022-11-02 15:25:09 +00:00
commit 12423649e1
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.idea/
*.spv
# General
.DS_Store
.AppleDouble
.LSOverride
# Icon must end with two \r
Icon
# Thumbnails
._*
# Files that might appear in the root of a volume
.DocumentRevisions-V100
.fseventsd
.Spotlight-V100
.TemporaryItems
.Trashes
.VolumeIcon.icns
.com.apple.timemachine.donotpresent
# Directories potentially created on remote AFP share
.AppleDB
.AppleDesktop
Network Trash Folder
Temporary Items
.apdisk
CMakeLists.txt.user
CMakeCache.txt
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CMakeScripts
Testing
Makefile
cmake_install.cmake
install_manifest.txt
compile_commands.json
CTestTestfile.cmake
cmake-build-debug
cmake-build-release
# Xcode
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*/build/*
*.pbxuser
!default.pbxuser
*.mode1v3
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#CocoaPods
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build/*
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Debug/
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.version.toml

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cmake_minimum_required(VERSION 3.21)
project(TestAugeas)
include_directories(/opt/homebrew/opt/augeas/include/) # Headers para auto-complete?
link_directories(/opt/homebrew/opt/augeas/lib)
# Os binarios com as libraries, como é mac .dylib, linux: .SO, etc
# tive que usar HOMEBREW_NO_INSTALL_CLEANUP=1 "brew install augeas --build-from-source"
# para ele armazenar o codigo compilado.
set(CMAKE_CXX_STANDARD 14)
add_executable(TestAugeas main.cpp)
target_link_libraries(TestAugeas augeas) # Se não ele não sabe que é para compilar para ARM64

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#include <stdio.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <exception>
#include <stdlib.h>
#include <unistd.h>
#include <augeas.h>
// set wifi client data; DHCP, IP, ...
int setWifiParameter(int DHCP, std::string sIP, std::string sSubnet, std::string sRouter){
std::stringstream buffer;
buffer << "/etc/network/interfaces" << std::flush; // +++ IMPORTANT: no SLASH at the end of path, otherwise it will not work but there won't be an error message
std::string sPathExec = buffer.str();
std::cout << "Execution path is: " << sPathExec << std::endl;
augeas *myAug = NULL;
std::string sPath;
int ret = 0;
int iMatches = 0;
unsigned int flags = AUG_NO_MODL_AUTOLOAD; // AUG_NO_MODL_AUTOLOAD: really do not load // AUG_NO_LOAD: do not load/scan files // 0
const char *root = NULL; //sRoot.c_str();
const char *path = NULL;
char **matches = NULL;
const char *value = NULL;
char **pathsErrors = NULL;
// ==================
// Initialization of augeas
// ==================
std::cout << std::endl << "Here we start the initialization." << std::endl;
// Terminal: augtool --noautoload
// The flag is set to --noautoload in order to speed up the initialization.
// If the flag is not set, the standard config files are loaded which takes a while.
// The commands after aug_init() then set the specific files which should be loaded.
myAug = aug_init(root, "/usr/share/augeas/lenses", flags);
// Set lens which should be loaded
// Terminal: augtool> set /augeas/load/Interfaces/lens "Interfaces.lns"
ret = aug_set(myAug, "/augeas/load/Interfaces/lens", "Interfaces.lns");
std::cout << "Set lens: " << ret << std::endl;
// Set incl(ude) path which should be parsed
// Terminal: augtool> set /augeas/load/Interfaces/incl "/etc/network/interfaces"
path = sPathExec.c_str();
ret = aug_set(myAug, "/augeas/load/Interfaces/incl", path);
std::cout << "Set incl: " << ret << std::endl;
// Load/parse config files
// Terminal: augtool> load
ret = aug_load(myAug);
std::cout << "Load augeas: " << ret << std::endl;
// Reading and showing error messages
iMatches = aug_match(myAug, "/augeas//error/*", &pathsErrors);
std::cout << "Number of errors: " << std::to_string(iMatches) << std::endl;
for (int j = 0; j < iMatches; j++) {
ret = aug_get(myAug, pathsErrors[j], &value);
std::cout << pathsErrors[j] << std::endl;
if (value!=NULL){
std::cout << value << std::endl;
}else{
std::cout << "Null" << std::endl;
}
}
// ==================
// Checking for specific nodes
// ==================
std::cout << std::endl << "Here we start searching for a specific node." << std::endl;
// Check for matches
sPath= "/files" + sPathExec + "/iface";
path = sPath.c_str();
iMatches = aug_match(myAug, path, &matches);
std::cout << "Number of matches: " << iMatches << std::endl;
// Check which network interface is the wifi interface (wlan0)
// todo: simplify by using XPath
int iWlanInterface = -1;
std::cout << "The following paths have been found:" << std::endl;
for (int i=1; i<=iMatches; i++){
sPath = "/files" + sPathExec + "/iface[" + std::to_string(i) + "]";
std::cout << sPath << std::endl;
path = sPath.c_str();
const char *value;
ret = aug_get(myAug, path, &value); // todo: ret has to be 1, otherwise value is NULL
if (ret==1){
buffer.str(std::string()); // clear stream "buffer"
buffer << value << std::flush;
if (buffer.str()=="wlan0"){
iWlanInterface = i;
std::cout << "Interface number of wlan0: " << std::to_string(iWlanInterface) << std::endl;
}
}else{
std::cout << "no value" << std::endl;
}
}
// ==================
// Changing value of nodes
// ==================
std::cout << std::endl << "Here we start changing the value of the node." <<std::endl;
// Reading values before changing
sPath= "/files" + sPathExec + "/iface[" + std::to_string(iWlanInterface) + "]/method";
path = sPath.c_str();
ret = aug_get(myAug, path, &value);
std::cout << "The value read from node before changing: " << value << std::endl;
// Terminal: augtool > set /files/home/pi/AugeasDemoC/network/interfaces/iface[3]/method dhcp
sPath= "/files" + sPathExec + "/iface[" + std::to_string(iWlanInterface) + "]/method";
path = sPath.c_str();
ret = aug_set(myAug, path, "dhcp");
std::cout << "Set value: " << ret << std::endl;
// Reading version of augeas
ret = aug_get(myAug, "/augeas/version", &value);
std::cout << "Augeas version: " << value << std::endl;
// Reading values; just for debugging
sPath= "/files" + sPathExec + "/iface[" + std::to_string(iWlanInterface) + "]/method";
path = sPath.c_str();
ret = aug_get(myAug, path, &value);
std::cout << "The value read from node after changing: " << value << std::endl;
// ==================
// Saving changes back to file
// ==================
std::cout << std::endl << "Here we start saving changes back to files." << std::endl;
// Set the save mode: overwrite/backup/newfile/noop
ret = aug_set(myAug, "/augeas/save", "overwrite");
std::cout << "Save mode set: " << ret << std::endl;
// Reading and showing saved files
// Terminal: augtool> print /augeas/events/saved
char **pathSaved= NULL;
ret = aug_match(myAug, "/augeas/events/saved", &pathSaved);
std::cout << "Number of changed files: " << std::to_string(ret) << std::endl;
for (int j = 0; j < ret; j++) {
aug_get(myAug, pathSaved[j], &value);
std::cout << pathSaved[j] << std::endl;
}
// Save the changed config files
// Terminal: augtool > save
ret = aug_save(myAug);
std::cout << "File saved: " << ret << std::endl;
// Reading and showing saved files
// Terminal: augtool> print /augeas/events/saved
ret = aug_match(myAug, "/augeas/events/saved", &pathSaved);
std::cout << "Number of changed files: " << std::to_string(ret) << std::endl;
for (int j = 0; j < ret; j++) {
aug_get(myAug, pathSaved[j], &value);
std::cout << pathSaved[j] << std::endl;
}
// Reading and showing error messages
iMatches = aug_match(myAug, "/augeas//error/*", &pathsErrors);
std::cout << "Number of errors: " << std::to_string(iMatches) << std::endl;
for (int j = 0; j < iMatches; j++) {
ret = aug_get(myAug, pathsErrors[j], &value);
std::cout << pathsErrors[j] << std::endl;
if (value!=NULL){
std::cout << value << std::endl;
}else{
std::cout << "Null" << std::endl;
}
}
aug_close(myAug);
return 0;
}
/**
* This is the main method which creates and sets consumer instance.
* @Looping is essential for this MQTT library to work.
* @Exceptions on connection and subscription error.
*/
int main(int argc, char *argv[]) {
// write config files related to wifi
int ret = setWifiParameter(1, "192.168.178.123", "255.255.255.0", "192.168.178.1");
std::cout << "Return: " << ret << std::endl;
return 0;
}