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

@@ -1,49 +1,33 @@
 # Update
 
-Update script written in Bash for Arch Linux only. Keeps all your pacman and aur packages as well as your flatpaks up to date with one simple script. It also backups a list of all your pacman and aur packages and flatpaks.
-
-## Requirements
-
-Here is what is required. 
-```bash
-pacman -S just
-```
-It also technically requires sudo, but if you use something else, then just create a softlink for this script to work.<br/>
-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.<br/>
+Before installing, please edit the config and configure it to your liking.
+
 Then install using
 ```bash
-just install
+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:
-no flag        same as -p
--f             updates using flatpak update only
--p             updates using a pacman-wrapper only
--a             updates using flatpak update and a pacman-wrapper
--g             shutdowns the computer afterwards
--r             reboots the computer afterwards
---help         displays this message
---preview      shows a preview of which pkg's will be updates
---version      prints out the version number
---backup       just does the before-backup without updating
-```
-
-## Contributing
+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."

update

@@ -1,127 +0,0 @@
-#!/usr/bin/bash
-
-source "$HOME"/.config/update.conf || exit 1
-[[ ! -d $BACKUP_LOCATION ]] && mkdir --parents "$BACKUP_LOCATION"
-
-VERSION="2.0.9"
-IGREEN="\033[0;92m"     # Intense Green
-IYELLOW="\033[0;93m"    # Intense Yellow
-NO_COLOR="\033[0m"      # Text Reset
-TMP="/tmp/update"
-DATE="$(date +"%Y-%m-%dT%H:%M:%S%:z")"  # RFC 3339 date-time https://datatracker.ietf.org/doc/html/rfc3339#section-5.6
-FINAL_COMMAND=""
-
-trap interrupt_function INT
-
-interrupt_function() {
-    echo "Interrupt has been detected"
-    [[ -f /var/lib/pacman/db.lck ]] && sudo rm /var/lib/pacman/db.lck > /dev/null 2>&1
-    rm --recursive "$TMP" > /dev/null 2>&1
-    exit 1
-}
-
-help() {
-   echo "Usage: update [OPTION]"
-   echo
-   echo "options:"
-   echo "no flag        same as -p"
-   echo "-f             updates using flatpak update only"
-   echo "-p             updates using a pacman-wrapper only"
-   echo "-a             updates using flatpak update and a pacman-wrapper"
-   echo "-g             shutdowns the computer afterwards"
-   echo "-r             reboots the computer afterwards"
-   echo "--help         displays this message"
-   echo "--preview      shows a preview of which pkg's can be updated"
-   echo "--version      prints out the version number"
-   echo "--backup       just does the before-backup without updating"
-}
-
-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 [[ $(ls -Ub "$BACKUP_LOCATION" | grep -c $1) -ge $BACKUP_AMOUNT ]]; then
-        OLDEST_FILE="$(ls -rt1 $BACKUP_LOCATION | grep $1 | head -1)"   # sorts by time (oldes first) and gets the first item
-        rm "$BACKUP_LOCATION"/"$OLDEST_FILE"
-    fi
-}
-
-before_backup() {
-    lock_pacman_db
-    delete_oldest_backup before-backup
-    [[ -d $TMP ]] && rm -r "$TMP"
-    mkdir --parents "$TMP"/before-backup_"$DATE" "$TMP"/after-backup_"$DATE"
-    pacman -Q > "$TMP"/before-backup_"$DATE"/pacman-before.txt
-    [[ -f /usr/bin/flatpak ]] && flatpak list --all --show-details > "$TMP"/before-backup_"$DATE"/flatpak-before.txt
-    tar --create --xz --file "$TMP"/before-backup_"$DATE".tar.xz.new "$TMP"/before-backup_"$DATE" /var/lib/pacman/local > /dev/null 2>&1    # for some reason it needs the output suppresion
-    sudo rm /var/lib/pacman/db.lck
-    mv "$TMP"/before-backup_"$DATE".tar.xz.new "$BACKUP_LOCATION"
-    mv "$BACKUP_LOCATION"/before-backup_"$DATE".tar.xz.new "$BACKUP_LOCATION"/before-backup_"$DATE".tar.xz
-}
-
-after_backup() {
-    delete_oldest_backup after-backup
-    tar --create --xz --file "$TMP"/after-backup_"$DATE".tar.xz.new "$TMP"/after-backup_"$DATE" > /dev/null 2>&1
-    mv "$TMP"/after-backup_"$DATE".tar.xz.new "$BACKUP_LOCATION"
-    mv "$BACKUP_LOCATION"/after-backup_"$DATE".tar.xz.new "$BACKUP_LOCATION"/after-backup_"$DATE".tar.xz
-    rm --recursive "$TMP"
-}
-
-update_with_pacman_wrapper() {
-    "$PACMAN_WRAPPER"
-    pacman -Q > "$TMP"/after-backup_"$DATE"/pacman-after.txt
-}
-
-update_with_flatpak() {
-	flatpak update --assumeyes
-    flatpak list --all --show-details > "$TMP"/after-backup_"$DATE"/flatpak-after.txt
-}
-
-if [[ ${1:0:2} = -- ]]; then
-    case "${1:2}" in
-        help)
-            help ;;
-        preview)
-            "$PACMAN_WRAPPER" -Sy
-            "$PACMAN_WRAPPER" -Qu ;;
-        version)
-            echo "$VERSON" ;;
-        backup)
-            before_backup
-            rm --recursive "$TMP" ;;
-        ?)
-            help; exit 1;;
-    esac
-    exit 0
-fi
-
-before_backup && echo -e "${IGREEN}pre-backup complete${NO_COLOR}"
-
-[[ $1 ]] || update_with_pacman_wrapper
-while getopts 'fpagr' OPTIONS; do
-    case $OPTIONS in
-        f)
-            update_with_flatpak ;;
-        p)
-            update_with_pacman_wrapper ;;
-        a)
-            update_with_pacman_wrapper; update_with_flatpak ;;
-        g)
-            [[ $1 = -g ]] && update_with_pacman_wrapper
-            FINAL_COMMAND="systemctl --check-inhibitors=yes poweroff" ;;
-        r)
-            [[ $1 = -r ]] && update_with_pacman_wrapper
-            FINAL_COMMAND="systemctl --check-inhibitors=yes reboot" ;;
-        ?)
-            help; exit 1;;
-    esac
-done
-
-after_backup && echo -e "${IGREEN}after-backup complete${NO_COLOR}"
-$FINAL_COMMAND; exit

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

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-# Backup to this folder
-BACKUP_LOCATION=~/
-
-# use this pacman-wrapper
-PACMAN_WRAPPER=yay
-
-# how many different backups to keep
-BACKUP_AMOUNT=2