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

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+update:
+	gcc -ansi -o update update.c

README.md

@@ -1,36 +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.
-
-## Requirements
-
-It requires sudo, but if you use something else, then just create a softlink for this script to work.  
-Doing that would look like this.
-```bash
-ln -s /usr/bin/your_program /usr/bin/sudo
-```
+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!

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."

update

@@ -1,120 +0,0 @@
-#!/usr/bin/bash
-
-VERSION="3.0.0"
-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="$(date +"%Y-%m-%dT%H:%M:%S%:z")"  # RFC 3339 date-time https://datatracker.ietf.org/doc/html/rfc3339#section-5.6
-
-source "$HOME"/.config/update.conf || echo -e "${IRED}No config found${NO_COLOR}" || exit 1
-
-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
-}
-
-[[ $BACKUP_LOCATION ]] && check_for_valid_backup_location "$BACKUP_LOCATION" || echo -e "${IRED}No BACKUP_LOCATION specified${NO_COLOR}" || exit 1
-[[ $SECONDARY_BACKUP_LOCATION ]] && check_for_valid_backup_location "$SECONDARY_BACKUP_LOCATION"
-
-trap interrupt_function INT
-
-interrupt_function() {
-    echo "Interrupt has been detected"
-    [[ -f /var/lib/pacman/db.lck ]] && sudo rm --force /var/lib/pacman/db.lck > /dev/null 2>&1
-    rm --recursive --force "$TMP" > /dev/null 2>&1
-    rm --force "$BACKUP_LOCATION"/before-backup_"$DATE".tar.zst.new "$BACKUP_LOCATION"/after-backup_"$DATE".tar.zst.new
-    exit 1
-}
-
-help() {
-    echo "Usage: update [OPTION]"
-    echo "options:"
-    echo "--help         displays this message"
-    echo "--preview      shows a preview of pkg's and flatpaks which can be updated"
-    echo "--version      prints out the version number"
-}
-
-lock_pacman_db() {
-    if [ -f /var/lib/pacman/db.lck ]; then
-        echo -e "${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
-    sudo touch /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 > /dev/null 2>&1    # for some reason it needs the output suppresion
-    mv "$TMP"/before-backup_"$DATE".tar.zst.new "$BACKUP_LOCATION"
-    [[ $SECONDARY_BACKUP_LOCATION ]] && mv "$TMP"/before-backup_"$DATE".tar.zst.new "$SECONDARY_BACKUP_LOCATION"
-
-    sudo rm --force /var/lib/pacman/db.lck
-}
-
-after_backup() {
-    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" > /dev/null 2>&1
-
-    mv "$TMP"/after-backup_"$DATE".tar.zst.new "$BACKUP_LOCATION"
-    [[ $SECONDARY_BACKUP_LOCATION ]] && mv "$TMP"/before-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_"$DATE".tar.zst
-
-    rm --recursive --force "$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
-}
-
-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 "$VERSION" ;;
-        ?)
-            help; exit 1;;
-    esac
-    exit 0
-fi
-
-before_backup && echo -e "${IGREEN}pre-backup complete${NO_COLOR}"
-update
-after_backup && echo -e "${IGREEN}after-backup complete${NO_COLOR}"

update.c

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+#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