getting started

For users that use a nfs share for their backup, this will check if it is mounted.

Co-authored-by: AustrianToast <austriantoast@hopeless-cloud.xyz>
Reviewed-on: #28
Co-authored-by: ProfessionalUwU <andre.fuhry@hopeless-cloud.xyz>
Co-committed-by: ProfessionalUwU <andre.fuhry@hopeless-cloud.xyz>

.gitignore

@@ -0,0 +1,2 @@
+# Build artifacts
+update

Makefile

@@ -0,0 +1,2 @@
+update:
+	gcc -ansi -o update update.c

README.md

@@ -1,28 +1,33 @@
 # Update
 
-Update script written in Bash for Arch Linux only. Keeps all your official, aur packages and your flatpaks up to date with one simple script. It also backups a list of all your installed packages and flatpaks.
+Alpm hooks for the pacman package manager.<br>
+This project consists of two hooks, one for pre-transaction and the other for
+post-transaction.
 
 ## Installation 
 
 ```bash
-git clone https://gitea.hopeless-cloud.xyz/AustrianToast/update.git && cd update
+git clone https://gitea.hopeless-cloud.xyz/AustrianToast/update.git
+cd update
 ```
 
-Before installing, please edit the config and configure it to your liking.  
+Before installing, please edit the config and configure it to your liking.
+
 Then install using
 ```bash
-make
+make install
 ```
 
-## Usage
+If your require the previous functionality of being able to update flatpak and
+having the ability to preview the updateable packages and flatpaks.<br>
+This functionality has been re-packaged into `update.zsh`.<br>
+If you use oh-my-zsh, then you just throw this file into your `$ZSH_CUSTOM`.<br>
+This path is by default `~/.oh-my-zsh/custom`. If you use only plain zsh or any other
+shell, then you can just take the contained functions and put them inside the
+according shell config file. For example your `.bashrc`.
 
-```
-Usage: update [OPTION]
-options:
---help         displays this message
---preview      shows a preview of which pkg's will be updates
---version      prints out the version number
-```
+The function `flatpak-update` contains a variable called `BACKUP_LOCATION`.<br>
+Please change this path to your desired backup location.
 
 ## Contributing  
 Contributions are always welcome!

backup.go

@@ -1,120 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"errors"
-	"fmt"
-	"io/fs"
-	"log"
-	"os"
-	"os/exec"
-	"strings"
-)
-
-func parseEnvironment(key string) string {
-	value := os.Getenv(key)
-	if value == "" {
-		log.Panicf("%s is not set\n", key)
-	}
-	if _, err := os.Stat(value); err != nil {
-		if errors.Is(err, fs.ErrNotExist) {
-			log.Panicf("%s does not point to a valid path\n", key)
-		}
-		log.Panicf("trying to stat %s produced an unkown error\n", value)
-	}
-	return value
-}
-
-func parsePacmanConf() string {
-	var path string
-
-	file, err := os.Open("/etc/pacman.conf")
-	if err != nil {
-		log.Panicln(err)
-	}
-	defer func() {
-		if err := file.Close(); err != nil {
-			log.Panicln(err)
-		}
-	}()
-
-	scanner := bufio.NewScanner(file)
-	for scanner.Scan() {
-		line := scanner.Text()
-		if !strings.Contains(line, "DBPath") {
-			continue
-		}
-		path = strings.TrimSpace(strings.Split(line, "=")[1])
-		break
-	}
-
-	if _, err := os.Stat(path); err != nil {
-		if errors.Is(err, fs.ErrNotExist) {
-			log.Panicln("DBPath in /etc/pacman.conf does not point to a valid path")
-		}
-		log.Panicf("trying to stat %s produced an unkown error\n", path)
-	}
-
-	return fmt.Sprintf("%s%s", path, "local")
-}
-
-func preBackup() {
-	pacmanDb := parsePacmanConf()
-	log.Printf("pacmanDb: %s\n", pacmanDb)
-	tmpPath := "/tmp/update/pre_backup"
-
-	output, err := exec.Command("pacman",  "--verbose", "--query").Output()
-	if err != nil {
-		log.Panicln(err)
-	}
-
-	err = os.MkdirAll(tmpPath, 0755)
-
-	err = os.WriteFile(fmt.Sprintf("%s/%s", tmpPath, "pre_pacman.txt"), output, 0644)
-	if err != nil {
-		log.Panicln(err)
-	}
-
-	defer func() {
-		if r := recover(); r != nil {
-			err := os.RemoveAll(tmpPath)
-			if err != nil {
-				log.Fatal(err)
-			}
-
-			err = CopyDir(pacmanDb, fmt.Sprintf("%s/%s", tmpPath, pacmanDb))
-			if err != nil {
-				log.Panicln(err)
-			}
-
-			log.Println("recovered successfully")
-		}
-	}()
-
-	err = CopyDir(pacmanDb, fmt.Sprintf("%s/%s", tmpPath, pacmanDb))
-	if err != nil {
-		log.Panicln(err)
-	}
-}
-
-func postBackup() {
-	/*
-	 * basic logic for post:
-	 * create new pkg list and delete all lines which are the same as pre
-	 */
-	panic("unimplemented")
-}
-
-func main() {
-	// backup_dir := parseEnvironment("UPDATE_BACKUP_DIR")
-	cmdlineArg := os.Args[1]
-	log.Printf("cmdlineArg: %s\n", cmdlineArg)
-
-	if cmdlineArg == "pre" {
-		preBackup()
-	} else if cmdlineArg == "post" {
-		postBackup()
-	} else {
-		log.Panicf("invalid cmdline argument. supplied value was: %s\n", cmdlineArg)
-	}
-}

copy.go

@@ -1,134 +0,0 @@
-/* MIT License
- *
- * Copyright (c) 2017 Roland Singer [roland.singer@desertbit.com]
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package main
-
-import (
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-)
-
-// CopyFile copies the contents of the file named src to the file named
-// by dst. The file will be created if it does not already exist. If the
-// destination file exists, all it's contents will be replaced by the contents
-// of the source file. The file mode will be copied from the source and
-// the copied data is synced/flushed to stable storage.
-func CopyFile(src, dst string) (err error) {
-	in, err := os.Open(src)
-	if err != nil {
-		return
-	}
-	defer in.Close()
-
-	out, err := os.Create(dst)
-	if err != nil {
-		return
-	}
-	defer func() {
-		if e := out.Close(); e != nil {
-			err = e
-		}
-	}()
-
-	_, err = io.Copy(out, in)
-	if err != nil {
-		return
-	}
-
-	err = out.Sync()
-	if err != nil {
-		return
-	}
-
-	si, err := os.Stat(src)
-	if err != nil {
-		return
-	}
-	err = os.Chmod(dst, si.Mode())
-	if err != nil {
-		return
-	}
-
-	return
-}
-
-// CopyDir recursively copies a directory tree, attempting to preserve permissions.
-// Source directory must exist, destination directory must *not* exist.
-// Symlinks are ignored and skipped.
-func CopyDir(src string, dst string) (err error) {
-	src = filepath.Clean(src)
-	dst = filepath.Clean(dst)
-
-	si, err := os.Stat(src)
-	if err != nil {
-		return err
-	}
-	if !si.IsDir() {
-		return fmt.Errorf("source is not a directory")
-	}
-
-	_, err = os.Stat(dst)
-	if err != nil && !os.IsNotExist(err) {
-		return
-	}
-	if err == nil {
-		return fmt.Errorf("destination already exists")
-	}
-
-	err = os.MkdirAll(dst, si.Mode())
-	if err != nil {
-		return
-	}
-
-	entries, err := ioutil.ReadDir(src)
-	if err != nil {
-		return
-	}
-
-	for _, entry := range entries {
-		srcPath := filepath.Join(src, entry.Name())
-		dstPath := filepath.Join(dst, entry.Name())
-
-		if entry.IsDir() {
-			err = CopyDir(srcPath, dstPath)
-			if err != nil {
-				return
-			}
-		} else {
-			// Skip symlinks.
-			if entry.Mode()&os.ModeSymlink != 0 {
-				continue
-			}
-
-			err = CopyFile(srcPath, dstPath)
-			if err != nil {
-				return
-			}
-		}
-	}
-
-	return
-}

go.mod

@@ -1,3 +0,0 @@
-module update
-
-go 1.23.0

justfile

@@ -1,10 +0,0 @@
-install:
-	@echo "==> Installing update into /usr/local/bin"
-	@sudo install -Dm755 update /usr/local/bin/update
-	@[[ -f ${HOME}/.config/update.conf ]] || cp update.conf ${HOME}/.config/
-	@echo "==> Finished."
-
-uninstall:
-	@echo "==> Uninstalling update from /usr/local/bin"
-	@sudo rm /usr/local/bin/update ${HOME}/.config/update.conf
-	@echo "==> Finished."

makefile

@@ -1,10 +0,0 @@
-install:
-	@echo "==> Installing update into /usr/local/bin"
-	@sudo install -Dm755 update /usr/local/bin/update
-	@[[ -f ${HOME}/.config/update.conf ]] || cp update.conf ${HOME}/.config/
-	@echo "==> Finished."
-
-uninstall:
-	@echo "==> Uninstalling update from /usr/local/bin"
-	@sudo rm /usr/local/bin/update ${HOME}/.config/update.conf
-	@echo "==> Finished."

post_backup.hook

@@ -1,11 +0,0 @@
-[Trigger]
-Operation = Install
-Operation = Upgrade
-Operation = Remove
-Type = Path
-Target = /usr/local/bin/backup
-
-[Action]
-Description = Backing up the pacman db...
-When = PostTransaction
-Exec = /usr/local/bin/backup post

pre_backup.hook

@@ -1,12 +0,0 @@
-[Trigger]
-Operation = Install
-Operation = Upgrade
-Operation = Remove
-Type = Path
-Target = /usr/local/bin/backup
-
-[Action]
-Description = Backing up the pacman db...
-When = PreTransaction
-Exec = /usr/local/bin/backup pre
-AbortOnFail

update

@@ -1,141 +0,0 @@
-#!/usr/bin/bash
-
-VERSION="3.2"
-IGREEN="\033[0;92m"     # Intense Green
-IYELLOW="\033[0;93m"    # Intense Yellow
-IRED='\033[0;91m'       # Red
-NO_COLOR="\033[0m"      # Text Reset
-TMP="/tmp/update"
-DATE="$(date +"%Y-%m-%dT%H:%M:%S%:z")"  # RFC 3339 date-time https://datatracker.ietf.org/doc/html/rfc3339#section-5.6
-
-trap interrupt_function INT
-
-interrupt_function() {
-    echo -e "${IRED}\nInterrupt has been detected${NO_COLOR}"
-    if [ -f /var/lib/pacman/db.lck ]; then
-        echo -e "${IRED}Trying to unlock the pacman db. Please enter your password.${NO_COLOR}"
-        su --command="rm --force /var/lib/pacman/db.lck"
-    fi
-    [[ -d $TMP ]] && rm --recursive --force "$TMP"
-    [[ -f "$BACKUP_LOCATION"/before-backup_"$DATE".tar.zst.new ]] && rm --force "$BACKUP_LOCATION"/before-backup_"$DATE".tar.zst.new
-    [[ -f "$BACKUP_LOCATION"/after-backup_"$DATE".tar.zst.new ]] && rm --force "$BACKUP_LOCATION"/after-backup_"$DATE".tar.zst.new
-    exit 1
-}
-
-help() {
-    echo "Usage: update [OPTION]"
-    echo "options:"
-    echo "--help         displays this message"
-    echo "--preview      shows a preview of pkg's and flatpaks which can be updated"
-    echo "--version      prints out the version number"
-}
-
-source "$HOME"/.config/update.conf || echo -e "${IRED}No config found${NO_COLOR}" || exit 1
-
-if [[ ${1:0:2} == \-\- ]]; then
-    case "${1:2}" in
-        help)
-            help ;;
-        preview)
-            "$PACMAN_WRAPPER" -Syy
-            "$PACMAN_WRAPPER" --query --upgrades
-            [[ -x /usr/bin/flatpak ]] && flatpak remote-ls --updates ;;
-        version)
-            echo "$VERSION" ;;
-        ?)
-            help; exit 1;;
-    esac
-    exit 0
-fi
-
-check_for_valid_backup_location() {
-    if [ ! -d $1 ]; then
-        echo -e "${IYELLOW}$1 doesn't exist${NO_COLOR}"
-        read -p "Do you want to create the path and continue? [y/N]" input
-        case $input in
-            [Yy]) mkdir --parents "$1" ;;
-            [Nn]) exit 0;;
-            * ) exit 0 ;;
-        esac
-    fi
-}
-
-if [ $BACKUP_LOCATION ]; then
-    check_for_valid_backup_location "$BACKUP_LOCATION"
-else
-    echo -e "${IRED}No BACKUP_LOCATION in $HOME/.config/update.conf specified${NO_COLOR}"
-    exit 1
-fi
-[[ $SECONDARY_BACKUP_LOCATION ]] && check_for_valid_backup_location "$SECONDARY_BACKUP_LOCATION"
-
-lock_pacman_db() {
-    if [ -f /var/lib/pacman/db.lck ]; then
-        echo -e "${IYELLOW}->${NO_COLOR} /var/lib/pacman/db.lck exists"
-        echo -e "${IYELLOW}->${NO_COLOR} there might be another instance of pacman running. exiting..."
-        exit 1
-    fi
-
-    echo -e "${IYELLOW}Trying to lock the pacman db. Please enter your password.${NO_COLOR}"
-    su --command="touch /var/lib/pacman/db.lck"
-}
-
-unlock_pacman_db() {
-    echo -e "${IYELLOW}Trying to unlock the pacman db. Please enter your password.${NO_COLOR}"
-    su --command="rm --force /var/lib/pacman/db.lck"
-}
-
-delete_oldest_backup() {
-    if [[ $(find $BACKUP_LOCATION -name '*$1*' -exec printf %c {} + | wc -c) -ge $BACKUP_AMOUNT ]]; then
-        rm --force $(find "$BACKUP_LOCATION" -name '*$1*' | sort -rn | head -1)
-    fi
-}
-
-before_backup() {
-    lock_pacman_db
-
-    [[ -d $TMP ]] && rm --recursive --force "$TMP"
-    mkdir --parents "$TMP"/before-backup_"$DATE" "$TMP"/after-backup_"$DATE"
-
-    pacman --verbose --query > "$TMP"/before-backup_"$DATE"/pacman-before.txt
-    [[ -x /usr/bin/flatpak ]] && flatpak list --all --show-details > "$TMP"/before-backup_"$DATE"/flatpak-before.txt
-
-    tar --create --zstd --file "$TMP"/before-backup_"$DATE".tar.zst.new "$TMP"/before-backup_"$DATE" /var/lib/pacman/local
-    cp "$TMP"/before-backup_"$DATE".tar.zst.new "$BACKUP_LOCATION"
-    [[ $SECONDARY_BACKUP_LOCATION ]] && cp "$TMP"/before-backup_"$DATE".tar.zst.new "$SECONDARY_BACKUP_LOCATION"
-
-    unlock_pacman_db
-}
-
-after_backup() {
-    lock_pacman_db
-
-    pacman --verbose --query > "$TMP"/after-backup_"$DATE"/pacman-after.txt
-    [[ -x /usr/bin/flatpak ]] && flatpak list --all --show-details > "$TMP"/after-backup_"$DATE"/flatpak-after.txt
-    tar --create --zstd --file "$TMP"/after-backup_"$DATE".tar.zst.new "$TMP"/after-backup_"$DATE"
-
-    cp "$TMP"/after-backup_"$DATE".tar.zst.new "$BACKUP_LOCATION"
-    [[ $SECONDARY_BACKUP_LOCATION ]] && cp "$TMP"/after-backup_"$DATE".tar.zst.new "$SECONDARY_BACKUP_LOCATION"
-
-    delete_oldest_backup after-backup
-    mv "$BACKUP_LOCATION"/after-backup_"$DATE".tar.zst.new "$BACKUP_LOCATION"/after-backup_"$DATE".tar.zst
-    [[ $SECONDARY_BACKUP_LOCATION ]] && mv "$SECONDARY_BACKUP_LOCATION"/after-backup_"$DATE".tar.zst.new "$SECONDARY_BACKUP_LOCATION"/after-backup_"$DATE".tar.zst
-
-    delete_oldest_backup before-backup
-    mv "$BACKUP_LOCATION"/before-backup_"$DATE".tar.zst.new "$BACKUP_LOCATION"/before-backup_"$DATE".tar.zst
-    [[ $SECONDARY_BACKUP_LOCATION ]] && mv "$SECONDARY_BACKUP_LOCATION"/before-backup_"$DATE".tar.zst.new "$SECONDARY_BACKUP_LOCATION"/before-backup_"$DATE".tar.zst
-
-    unlock_pacman_db
-    rm --recursive --force "$TMP"
-}
-
-update() {
-    "$PACMAN_WRAPPER"
-    if [[ -x /usr/bin/flatpak ]]; then
-        flatpak update --assumeyes
-        flatpak list --all --show-details > "$TMP"/after-backup_"$DATE"/flatpak-after.txt
-    fi
-}
-
-before_backup && echo -e "${IGREEN}before-backup complete${NO_COLOR}"
-update
-after_backup && echo -e "${IGREEN}after-backup complete${NO_COLOR}"

update.c

@@ -0,0 +1,83 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+int command_builder(char *command, char **args) {
+    char *tmp_command = malloc(strlen(command));
+    memcpy(tmp_command, command, strlen(command));
+    char *tmp_token;
+    size_t index = 0;
+
+    if (tmp_command == NULL) { return 1; }
+
+    tmp_token = strtok(tmp_command, " ");
+    while(tmp_token != NULL) {
+        args[index] = malloc(strlen(tmp_token));
+        memcpy(args[index], tmp_token, strlen(tmp_token));
+        tmp_token = strtok(NULL, " ");
+        index++;
+    }
+    free(tmp_command);
+    args[index++] = NULL;
+    return 0;
+}
+
+int run_cmd_and_wait(char *command) {
+    char **args = malloc(strlen(command));
+    int ret = command_builder(command, args);
+    if (ret != 0) {
+        return 1;
+    }
+
+    signed int pid = fork();
+    int status;
+
+    if (pid == -1) {
+        fprintf(stderr, "Couldn't fork. Error = %s\n", strerror(errno));
+        return 1;
+    } else if (pid > 0) {
+        waitpid(pid, &status, 0);
+    } else {
+        execvp(args[0], args);
+    }
+    free(args);
+
+    return status;
+}
+
+int main() {
+    FILE *os_release = fopen("/etc/os-release", "r");
+    if (!os_release) {
+        fprintf(stderr, "Couldn't open os-release. Error = %s\n", strerror(errno));
+    }
+    char buffer[1024];
+    while (fgets(buffer, sizeof buffer, os_release)) {
+        if (strncmp(buffer, "NAME=", 5) == 0) {
+            memmove(buffer, buffer + 6, (sizeof buffer) - 6);
+            buffer[strcspn(buffer, "\"")] = '\0';
+            break;
+        }
+    }
+    int ret;
+    char *args[100];
+    if (strcmp(buffer, "EndeavourOS") == 0) {
+        ret = run_cmd_and_wait("yay");
+    } else if (strcmp(buffer, "Debian") == 0) {
+        ret = run_cmd_and_wait("apt update");
+        if (ret != 0) {
+            return ret;
+        }
+        ret = run_cmd_and_wait("apt upgrade");
+    } else if (strcmp(buffer, "FreeBSD") == 0) {
+        ret = run_cmd_and_wait("pkg update");
+        if (ret != 0) {
+            return ret;
+        }
+        ret = run_cmd_and_wait("pkg upgrade");
+    } else {
+        fprintf(stderr, "OS %s not suported\n", buffer);
+        return 1;
+    }
+    return ret;
+}

update.conf

@@ -1,11 +0,0 @@
-# backup to this folder
-#BACKUP_LOCATION=~
-
-# optional secondary backup loaction
-#SECONDARY_BACKUP_LOCATION=~
-
-# use this pacman-wrapper
-PACMAN_WRAPPER=yay
-
-# how many different backups to keep
-BACKUP_AMOUNT=10