Added process manager

.gitea/workflows/build.yml

@@ -1,30 +0,0 @@
-name: Build
-
-on:
-  push: {}
-
-defaults:
-  run:
-    shell: bash
-    working-directory: .
-
-jobs:
-  build:
-    runs-on: ubuntu
-    container:
-      image: node:20
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
-      
-      - name: Install tools
-        run: apt update && apt install -y build-essential
-
-      - name: Compile project
-        run: make
-
-      - name: Save build output
-        uses: actions/upload-artifact@v3
-        with:
-          name: ncsambawatcher
-          path: ./ncsambawatcher

.gitea/workflows/release.yml

@@ -1,48 +0,0 @@
-name: Release
-
-on:
-  push:
-    tags:
-      - v.*
-
-defaults:
-  run:
-    shell: bash
-    working-directory: .
-
-jobs: 
-  release:
-    runs-on: ubuntu
-    needs: build
-    container:
-      image: node:20
-    steps:
-      - name: Install build tools
-        run: apt update && apt install -y zip
-      
-      - name: Download compiled binary
-        uses: actions/download-artifact@v3
-        with:
-          name: ncsambawatcher
-
-      - name: Copy files
-        run: |
-          mkdir build
-          cp ncsambawatcher build/ncsambawatcher
-          cp configs/ncsambawatcher.config.default build/ncsambawatcher.config
-          cp init.sh config/init.sh 
-
-      - name: Create release zip
-        run: |
-          cd build
-          zip ../ncsambawatcher.zip ./*
-
-      - name: Publish release
-        uses: actions/create-release@v1
-        env:
-          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
-        with:
-          tag_name: ${{ github.ref_name }}
-          release_name: Release ${{ github.ref_name }}
-          files: |
-            ncsambawatcher.zip

.gitignore

@@ -89,6 +89,4 @@ dkms.conf
 settings.json
 watch.c
 ncwatchfile
-ncsambawatcher
+ncsambawatcher
-
-obj/

Makefile

@@ -1,31 +1,2 @@
-# Compiler and flags
+all:
-CXX := g++
+	g++ -lrt -std=c++17 src/main.cpp src/usermanager.cpp src/guarder.cpp -o ncsambawatcher
-CXXFLAGS := -std=c++17 -Wall -Wextra -O2
-
-# Directories
-SRC_DIR := src
-OBJ_DIR := obj
-BUILD_DIR := .
-TARGET := $(BUILD_DIR)/ncsambawatcher
-
-# Create list of source and object files
-SRCS := $(wildcard $(SRC_DIR)/*.cpp)
-OBJS := $(SRCS:$(SRC_DIR)/%.cpp=$(OBJ_DIR)/%.o)
-
-# Default target
-all: $(TARGET)
-
-# Link object files into final binary
-$(TARGET): $(OBJS)
-	$(CXX) $(CXXFLAGS) -o $@ $^
-
-# Compile .cpp to .o into obj/
-$(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp
-	@mkdir -p $(OBJ_DIR)
-	$(CXX) $(CXXFLAGS) -c $< -o $@
-
-# Clean build artifacts
-clean:
-	rm -f $(OBJ_DIR)/*.o $(TARGET)
-
-.PHONY: all clean

configs/ncsambawatcher.config.default

@@ -1 +0,0 @@
-NEXTCLOUD_CONTAINER_NAME=nextcloud

configs/ncsambawatcher.service

@@ -1,7 +1,6 @@
 [Unit]
 Description=A service which scan Nextcloud folders
-After=network.target docker.service
+After=network.target
-Requires=docker.service
 
 [Service]
 ExecStart=/usr/bin/ncsambawatcher

configs/smb.24.04.conf

@@ -1,48 +0,0 @@
-[global]
-   vfs objects = full_audit
-   full_audit:prefix = %u|%I|%m|%S
-   full_audit:success = mkdirat unlinkat renameat write
-   full_audit:failure = none
-   full_audit:facility = local5
-   full_audit:priority = NOTICE
-
-# Example usershare
-[<username>] #CHANGEME
-   path = /path/to/nextcloud/data/<username>/files/ #CHANGEME
-   valid users = <username> #CHANGEME
-   force user = www-data
-   force group = www-data
-   create mask = 0755
-   force create mode = 0755
-   directory mask = 0755
-   force directory mode = 0755
-   guest ok = no
-   public = no
-   writable = yes
-   browsable = yes
-   hide dot files = no
-   inherit owner = yes
-   hide unreadable = no
-
-# Example groupfolder share
-[Sharename]
-   path = /path/to/nextcloud/data/__groupfolders/<groupfolder-id> #CHANGEME
-   valid users = usernames #CHANGEME
-   force user = www-data
-   force group = www-data
-   create mask = 0755
-   force create mode = 0755
-   directory mask = 0755
-   force directory mode = 0755
-   guest ok = no
-   public = no
-   writable = yes
-   browsable = yes
-   hide dot files = no
-   inherit owner = yes
-   hide unreadable = no
-   full_audit:prefix = %u|%I|%m|__groupfolders/<groupfolder-id> #CHANGEME
-
-# To disable logs for a specific share, add this line to that share
-[Sharename]
-   vfs objects = 

src/configfilemanager.h

@@ -1,48 +0,0 @@
-#ifndef _CONFIGFILEMANAGER_H
-#define _CONFIGFILEMANAGER_H
-
-#include <map>
-#include <string>
-#include <vector>
-#include <fstream>
-#include <iostream>
-#include "definitions.h"
-
-class configfilemanager{
-private:
-    std::map<std::string, std::string> configs;
-
-public:
-    configfilemanager(std::string filepath = "./ncsambawatcher.config")
-    {
-        std::ifstream is(filepath);
-        std::string tmp;
-        while(std::getline(is, tmp))
-        {
-            if (tmp.at(0) == '#') // ignore comments
-                continue;
-            
-            std::vector<std::string> splited = splitString(tmp, '=');
-            if (splited.size() != 2)
-            {
-                std::cerr << "Invalid line: " << tmp << std::endl;
-                continue;
-            }
-
-            configs.insert(std::make_pair(splited.at(0), splited.at(1)));           
-        }
-    }
-
-    std::string at(const std::string &config)
-    {
-        return configs.at(config);
-    }
-
-    std::string at(const char* config)
-    {
-        return at(std::string(config));
-    }
-
-};
-
-#endif // _CONFIGFILEMANAGER_H

src/definitions.h

@@ -1,13 +0,0 @@
-#ifndef _LOCATIONS_H
-#define _LOCATIONS_H
-
-#define LOGFILE "journalctl -u smbd --since now -f"
-
-#define USER_LOG_LOCATION 3
-
-#define SCAN_CMD_USR "docker exec --user www-data %1% /var/www/html/occ files:scan --path="
-#define SCAN_CMD_GRP "docker exec --user www-data %1% /var/www/html/occ groupfolder:scan "
-
-std::vector<std::string> splitString(const std::string& input, char delimiter);
-
-#endif // _LOCATIONS_H

src/guarder.cpp

@@ -0,0 +1 @@
+#include "guarder.h"

src/guarder.h

@@ -0,0 +1,52 @@
+#ifndef _GUARDER_H
+#define _GUARDER_H
+
+#include <sys/types.h>
+#include <sys/shm.h>
+#include <sys/ipc.h>
+
+class guarder{
+private:
+    const int shmid;
+
+    void setFlag(bool value)
+    {
+        bool *flag = static_cast<bool *>(shmat(shmid, nullptr, 0));
+        *flag = value;
+        shmdt(flag);
+    }
+
+public:
+    guarder() : shmid(shmget(IPC_PRIVATE, sizeof(bool), 0666 | IPC_CREAT))
+    {
+        setFlagOff();
+    }
+
+    guarder(guarder &g) : shmid(g.shmid) {}
+
+    void setFlagOff()
+    {
+        setFlag(false);
+    }
+
+    void setFlagOn()
+    {
+        setFlag(true);
+    }
+
+    bool isFlagOn()
+    {
+        bool *flag = static_cast<bool *>(shmat(shmid, nullptr, 0));
+        bool ret = *flag;
+        shmdt(flag);
+        return ret;
+    }
+
+    ~guarder()
+    {
+        shmctl(shmid, IPC_RMID, nullptr);
+    }
+
+};
+
+#endif // _GUARDER_H

src/locations.h

@@ -0,0 +1,8 @@
+#ifndef _LOCATIONS_H
+#define _LOCATIONS_H
+
+#define LOGFILE "journalctl -u smbd --since now -f"
+
+#define USER_LOG_LOCATION 3
+
+#endif // _LOCATIONS_H

src/main.cpp

@@ -1,116 +1,120 @@
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/wait.h>
 #include <iostream>
-#include <thread>
-#include <vector>
-#include <set>
 #include <array>
 #include <string>
-#include <mutex>
+#include <vector>
-#include <condition_variable>
+#include <unistd.h>
-#include <cstdio>
+#include <sys/types.h>
-#include "definitions.h"
+#include <syslog.h>
+#include <fcntl.h>
+#include <signal.h>
+#include "locations.h"
 #include "usermanager.h"
-#include "configfilemanager.h"
+#include "guarder.h"
+#include "processManager.h"
 
+#define MAXNAMESIZE 255
+#define SCAN_DONE_SIG SIGRTMIN
+#define SCAN_CMD_USR "docker exec --user www-data nextcloud /var/www/html/occ files:scan --path="
+
+int p1[2];
+guarder guard;
 userManager manager;
-std::condition_variable cv;
-std::mutex mtx;
-configfilemanager cfm;
 
-std::vector<std::string> splitString(const std::string& str, char delimiter = '|')
+void flushManagerToPipe()
 {
-    std::vector<std::string> ret;
+    if (!guard.isFlagOn())
-    std::stringstream ss(str);
-    std::string token;
-
-    while (std::getline(ss, token, delimiter)) {
-        ret.push_back(token);
-    }
-
-    return ret;
-}
-
-void readingThreadFunc()
-{
-    FILE *logpipe = popen(LOGFILE, "r");
-    std::array<char, 256> buffer;
-
-    while (fgets(buffer.data(), buffer.size(), logpipe) != nullptr)
     {
-        std::string line(buffer.data());
+        std::vector<std::string> users = manager.getFlaggedUsers();
-
-        if (line.find('|') == std::string::npos)
-            continue;
-
-        std::vector<std::string> x = splitString(line, '|');
-        std::string user(x.at(USER_LOG_LOCATION));
 
+        for (std::vector<std::string>::iterator it = users.begin(); it != users.end(); ++it)
         {
-            std::lock_guard<std::mutex> lock(mtx);
+            int size = it->size();
-            manager.addUser(user);
+            write(p1[1], &size, sizeof(int));
-            manager.setUserFlagged(user);
+            write(p1[1], it->data(), size * sizeof(char));
         }
 
-        cv.notify_one();
-
-        std::cout << "User find: " << user << std::endl;
-    }
-}
-
-void scannerThreadFunc()
-{
-    std::unique_lock<std::mutex> lock(mtx);
-    std::vector<pid_t> childrens;
-    while (true)
-    {
-        cv.wait(lock, []
-                { return manager.isAnybodyFlagged(); });
-
-        std::set<std::string> scanUsers = manager.getFlaggedUsers();
         manager.unflagAllUsers();
+    }
+}
 
-        lock.unlock();
+void handler(int sig) 
-        childrens.clear();
+{
-
+    if (sig == SCAN_DONE_SIG)
-        for (const std::string& user : scanUsers)
+    {
-        {
+        flushManagerToPipe();
-            pid_t child = fork();
-
-            if (child < 0)
-            {
-                std::cerr << "Fork failed for: " << user << std::endl;
-            }
-            else if (child == 0) // child
-            {
-                std::string cmd = userManager::getScanCommandFromUser(user, cfm);
-                execl("/bin/sh", "sh", "-c", cmd.c_str(), static_cast<char *>(nullptr));
-                std::cerr << "Scan failed" << std::endl;
-                _exit(EXIT_FAILURE);
-            }
-            else // parent
-            {
-                childrens.push_back(child);
-            }
-        }
-
-        for (const pid_t& pid : childrens)
-        {
-            waitpid(pid, nullptr, 0);
-        }
-
-        lock.lock();
     }
 }
 
 int main()
 {
-    std::thread readingThread(readingThreadFunc);
+    openlog("ncsambawatcher", LOG_PID | LOG_CONS, LOG_USER);
-    std::thread scannerThread(scannerThreadFunc);
+    pipe(p1);
 
-    readingThread.join();
+    pid_t parent = getpid();
-    scannerThread.join();
+    pid_t child = fork();
 
-    return 0;
+    if (child > 0) // parent
+    {
+        signal(SCAN_DONE_SIG, handler);
+        close(p1[0]); // read
+
+        FILE *logpipe = popen(LOGFILE, "r");
+        std::array<char, 256> buffer;
+
+        while (fgets(buffer.data(), buffer.size(), logpipe) != nullptr)
+        {
+            std::string line(buffer.data());
+
+            if (line.find('|') == std::string::npos)
+                continue;
+
+            std::vector<std::string> x = splitLogFile(line, '|');
+            std::string user(x.at(USER_LOG_LOCATION));
+            manager.addUser(user);
+            manager.setUserFlagged(user);
+
+            std::cout << "User find: " << user << std::endl;
+
+            flushManagerToPipe();
+        }
+
+        fclose(logpipe);
+        close(p1[1]); // write
+    }
+    else // child
+    {
+        close(p1[1]); // write
+
+        int size;
+        char *buffer = nullptr;
+        processManager pm;
+
+        while (read(p1[0], &size, sizeof(int)))
+        {
+            if (buffer == nullptr)
+                buffer = new char[size];
+
+            read(p1[0], buffer, size * sizeof(char));
+            std::string name(buffer);
+            std::string cmd = std::string(SCAN_CMD_USR) + name;
+
+            std::cout << "Scan received for: " << name << std::endl;
+
+            pm.runTask(name, cmd);
+
+            kill(parent, SCAN_DONE_SIG);
+
+            if (buffer != nullptr)
+            {
+                delete[] buffer;
+                buffer = nullptr;
+            }
+        }
+
+        close(p1[0]); // read
+    }
+
+    closelog();
+
+    return EXIT_SUCCESS;
 }

src/processManager.h

@@ -0,0 +1,41 @@
+#ifndef _PROCCESSMANAGER_H
+#define _PROCCESSMANAGER_H
+
+#include <map>
+#include <string>
+#include <unistd.h>
+#include <sys/types.h>
+#include "guarder.h"
+#include "usermanager.h"
+
+class processManager
+{
+private:
+    std::map<std::string, guarder> running;
+
+    bool getIdTag(std::string &id)
+    {
+        return running[id].isFlagOn();
+    }
+
+
+public:  
+
+    void runTask(std::string &id, std::string &cmdCommand)
+    {
+        if (!getIdTag(id))
+        {
+            running[id].setFlagOn();
+            pid_t child = fork();
+
+            if (child == 0) // child
+            {
+                system(cmdCommand.c_str());
+                running[id].setFlagOff();
+                exit(EXIT_SUCCESS);
+            }
+        }
+    }
+};
+
+#endif // _PROCCESSMANAGER_H

src/usermanager.cpp

@@ -1,27 +1,14 @@
 #include "usermanager.h"
 
-std::string userManager::getScanCommandFromUser(const std::string &user, configfilemanager &cfm)
+std::vector<std::string> splitLogFile(const std::string& input, char delimiter = '|')
 {
-    std::string contname = cfm.at("NEXTCLOUD_CONTAINER_NAME");
+    std::vector<std::string> ret;
-    std::string baseCommand;
+    std::stringstream ss(input);
-    std::string userCommand;
+    std::string token;
-    
+
-    if (user.find("__groupfolder") != std::string::npos)
+    while (std::getline(ss, token, delimiter)) {
-    {
+        ret.push_back(token);
-        baseCommand = SCAN_CMD_GRP;
-        userCommand = splitString(user, '/').back();
-    }
-    else
-    {
-        baseCommand = SCAN_CMD_USR;
-        userCommand = user;
     }
 
-    size_t pos = 0;
+    return ret;
-    while ((pos = baseCommand.find("%1%", pos)) != std::string::npos) {
-        baseCommand.replace(pos, contname.length(), contname);
-        pos += contname.length(); // Move past the replacement
-    }
-
-    return baseCommand + userCommand;
 }

src/usermanager.h

@@ -4,30 +4,25 @@
 #include <string>
 #include <map>
 #include <vector>
-#include <set>
 #include <sstream>
-#include <mutex>
+#include "locations.h"
-#include "definitions.h"
+
-#include "configfilemanager.h"
+std::vector<std::string> splitLogFile(const std::string& input, char delimiter);
 
 class userManager
 {
 private:
     std::map<std::string, bool> users;
-    std::mutex mtx;
 
 public:
     
-    static std::string getScanCommandFromUser(const std::string&, configfilemanager& cfm);
-
     void addUserFromLogLine(std::string &line)
     {
-        addUser(splitString(line, '|').at(USER_LOG_LOCATION));
+        addUser(splitLogFile(line, '|').at(USER_LOG_LOCATION));
     }
 
     void addUser(std::string &user)
     {
-        std::lock_guard<std::mutex> lock(mtx);
         if (users.count(user) == 0)
         {
             users[user] = false;
@@ -36,19 +31,16 @@ public:
 
     void removeUser(std::string &user)
     {
-        std::lock_guard<std::mutex> lock(mtx);
         users.erase(user);
     }
 
     bool isContains(std::string &user)
     {
-        std::lock_guard<std::mutex> lock(mtx);
         return users.count(user) == 1;
     }
 
     void setUserFlagged(std::string &user)
     {
-        std::lock_guard<std::mutex> lock(mtx);
         if (users.count(user) == 1)
         {
             users[user] = true;
@@ -57,7 +49,6 @@ public:
 
     void setUserUnflagged(std::string &user)
     {
-        std::lock_guard<std::mutex> lock(mtx);
         if (users.count(user) == 1)
         {
             users[user] = false;
@@ -66,56 +57,38 @@ public:
 
     void unflagAllUsers()
     {
-        std::lock_guard<std::mutex> lock(mtx);
         for (std::map<std::string, bool>::iterator it = users.begin(); it != users.end(); ++it)
         {
             it->second = false;
         }
     }
 
-    std::set<std::string> getUsers()
+    std::vector<std::string> getUsers()
     {
-        std::set<std::string> ret;
+        std::vector<std::string> ret;
-
-        std::lock_guard<std::mutex> lock(mtx);
 
         for (std::map<std::string, bool>::iterator it = users.begin(); it != users.end(); ++it)
         {
-            ret.insert(it->first);
+            ret.push_back(it->first);
         }
 
         return ret;
     }
 
-    std::set<std::string> getFlaggedUsers()
+    std::vector<std::string> getFlaggedUsers()
     {
-        std::set<std::string> ret;
+        std::vector<std::string> ret;
-
-        std::lock_guard<std::mutex> lock(mtx);
 
         for (std::map<std::string, bool>::iterator it = users.begin(); it != users.end(); ++it)
         {
             if (it->second)
             {
-                ret.insert(it->first);
+                ret.push_back(it->first);
             }
         }
 
         return ret;
     }
-
-    bool isAnybodyFlagged()
-    {
-        std::lock_guard<std::mutex> lock(mtx);
-    
-        for (std::map<std::string, bool>::iterator it = users.begin(); it != users.end(); ++it)
-        {
-            if (it->second)
-                return true;
-        }
-
-        return false;
-    }
 };
 
 #endif // _USERMAN_H