feat: git weekly backups

orchestrating/README.org

@@ -1,19 +1,45 @@
 #+OPTIONS: toc:nil
 
-* ROOT SERVICES
+* INIT SYSTEM
+
+** ROOT SERVICES (Currently none!)
 =<service>.sh= to be symlinked to =/etc/init.d/podman-containers=
-* USER SERVICES AND RUNLEVELS
+** USER SERVICES AND RUNLEVELS
 =.config= folder to be symlinked to =~=
-* XDG VARIABLES AND RUNNING USER SERVICES ON LOGIN
+** * XDG VARIABLES AND RUNNING USER SERVICES ON LOGIN
 =.profile= to be symlinked to =/home/$USER/.profile=
 
-* RUN USERS SERVICES ON BOOT
+** RUN USERS SERVICES ON BOOT
 Symlink =/etc/init.d/user= to =/etc/init.d/user.$usernames=. After add, add the latter service with =rc-update= as root.
   
-* IF <USER> HAS PASSWORD
+** IF <USER> HAS PASSWORD
 Add the following to a new file in =/etc/doas.d/=:
 
 #+begin_src shell
 permit nopass <user> as <user>
 permit nopass root as <user>
 #+end_src
+
+* Timed cron jobs
+
+First, swap built-in =crond= for =dcron=. We need to swap cron binaries since we would have to give setgid capabilites to the whole Busybox binary to use the included cron binary, for which we also need to install =libcap=:
+
+#+begin_src shell
+  # apk add dcron libcap
+  ,** if crond is set up, remember to stop and delete it before continuing!
+  # rc-service dcron start
+  # rc-update add dcron
+  # setcap cap_setgid=ep /usr/sbin/crond
+#+end_src
+
+After this, remember to add =root= and =$USER= to the =cron= group!
+
+We now set up =$USER='s crontab as such:
+
+#+begin_src shell
+  #crontab -u $USER -e
+  
+  @weekly ID=git-back.weekly /home/$user/pihanepi/orchestrating/cronjobs/forgejo-clone/forgejo-clone.sh
+#+end_src
+
+Finally, check =/var/log/messages= to confirm everything ran successfully.

orchestrating/cronjobs/forgejo-clone/forgejo-clone.sh

@@ -25,15 +25,15 @@ echo $repo_urls
 echo "----\n"
 
 #Cloning each repo to destdir
-i=0;
+repo_idx=0;
-finished=false;
+repo_finished=false;
-while ! $finished
+while ! $repo_finished
 do
-  i=$(($i+1)); 
+  repo_idx=$(($repo_idx+1)); 
-  repo=$(awk "{print \$$i}" <(echo $repo_urls))
+  repo=$(awk "{print \$$repo_idx}" <(echo $repo_urls))
   if [ "$repo" = "" ]
   then
-    finished=true
+    repo_finished=true
   else
     #Retrieve repo name for folder
     repo_name="$(awk -F/ '{print $5}' <(echo $repo))"
@@ -42,16 +42,31 @@ do
     #Remove quotes from user_username
     username=${user_username%\"}
     username=${username#\"}
-    #Clone repo
+    #Clone or rebase repo
-    #TODO: what do if repo already exists? if it!
     if [ -e "$REPO_DIR$repo_name" ]
     then
       echo "REPO: $repo_name"
-      git -C "$REPO_DIR$repo_name" fetch --all 
+      git -C "$REPO_DIR$repo_name" fetch -t --all
-      #git -C "$REPO_DIR$repo_name" rebase --update-refs 
+      branch="$(git -C "$REPO_DIR$repo_name" branch | awk '{print $2}')"
+      git -C "$REPO_DIR$repo_name" rebase $branch --onto origin/$branch
     else
       git clone https://$user_username:$AUTH_TOKEN@$GIT_DOMAIN/$username/$repo_name /home/$USER/pihanepi/datamount/gitbackup/$repo_name --recurse-submodules
     fi
   fi
 done
 
+#NOTE: Cool git formatting and same loop to operate on all remote branches
+#branches="$(git -C $REPO_DIR$repo_name branch -r --format='%(refname:short)' | awk -F/ '{if ($2) print $2;}')"
+#branch_idx=0;
+#branch_finished=false;
+#while ! $branch_finished
+#do
+#  branch_idx=$(($branch_idx+1)); 
+#	branch=$(awk "{print \$$branch_idx}" <(echo $branches))
+#	if [ "$branch" = "" ]
+#	then
+#	  branch_finished=true
+#	else
+#    git -C "$REPO_DIR$repo_name" rebase $branch --onto origin/$branch
+#	fi
+#done