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-rwxr-xr-xbin/makeuser.sh110
1 files changed, 110 insertions, 0 deletions
diff --git a/bin/makeuser.sh b/bin/makeuser.sh
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+#!/usr/local/bin/bash
+# ---------------------------------------------------------------------------
+# makeuser - tilde.institute new user creation
+# Usage: makeuser [-h|--help] <username> <email> "<pubkey>"
+# ---------------------------------------------------------------------------
+
+PROGNAME=${0##*/}
+
+error_exit() {
+  echo -e "${PROGNAME}: ${1:-"Unknown Error"}" >&2
+  exit 1
+}
+
+usage() {
+  echo -e "usage: $PROGNAME [-h|--help] <username> <email> \"<pubkey>\""
+}
+
+[[ $(id -u) != 0 ]] && error_exit "you must be the superuser to run this script."
+
+USERLIST=$(cut </etc/passwd -d ":" -f1)
+if [[ $USERLIST == $1* ]]; then
+  error_exit "User already exists!"
+fi
+
+case $1 in
+-h | --help)
+  usage
+  exit
+  ;;
+-*)
+  usage
+  error_exit "unknown option $1"
+  ;;
+*)
+  [[ $# -ne 3 ]] && error_exit "not enough args"
+
+  # generate a random 20 digit password
+  # encrypt the password and pass it to
+  # useradd, set ksh as default shell
+  echo "adding new user $1"
+  newpw=$(pwgen -1B 20)
+  pwcrypt=$(encrypt ${newpw})
+  useradd -m -g 1001 -p $pwcrypt -s /bin/ksh -k /etc/skel $1
+
+  # make the public_html directory for the users
+  mkdir /var/www/users/$1
+  chown $1:tilde /var/www/users/$1
+  doas -u $1 ln -s /var/www/users/$1 /home/$1/public_html
+
+  # make the public_repos directory
+  mkdir /var/www/cgit_repos/$1
+  chown $1:tilde /var/www/cgit_repos/$1
+  doas -u $1 ln -s /var/www/cgit_repos/$1 /home/$1/public_repos
+
+  # set up the httpd configuration for
+  # individual users. this config forces tls
+  # for all subdomains
+  echo "server \"$1.tilde.institute\" {
+        listen on \$ext_addr port 80 block return 301 \"https://\$SERVER_NAME\$REQUEST_URI\"
+    }
+    server \"$1.tilde.institute\" {
+		listen on \$ext_addr tls port 443
+		root \"/users/$1\"
+        tls {
+            key \"/etc/letsencrypt/live/tilde.institute-0001/privkey.pem\"
+            certificate \"/etc/letsencrypt/live/tilde.institute-0001/fullchain.pem\"
+        }
+		directory index index.html
+		directory auto index
+		location \"/*.cgi\" {
+			fastcgi
+		}
+		location \"/*.php\" {
+			fastcgi socket \"/run/php-fpm.sock\"
+		}
+	}" >/etc/httpd/$1.conf
+
+  # add the user's vhost config to the bridged vhost config, which
+  # is loaded by /etc/httpd.conf. This is necessary because httpd(8)
+  # does not support globbing on includes
+  echo "include \"/etc/httpd/$1.conf\"" >>/etc/httpd-vusers.conf
+
+  # Sort and deduplicate entries in the bridged vhost config file
+  # Duplicate entries cause weird behavior. Subdomains after the
+  # duplicated entry won't resolve properly and instead resolve
+  # to the main site
+  sort -u /etc/httpd-vusers.conf >/etc/httpd-vusers.conf.sorted
+  cp /etc/httpd-vusers.conf.sorted /etc/httpd-vusers.conf
+  #pkill -HUP httpd
+  #rcctl restart httpd
+
+  # send welcome email
+  sed -e "s/newusername/$1/g" /admin/misc/email.tmpl | mail -r admins@tilde.institute -s "welcome to tilde.institute!" $2
+
+  # subscribe to mailing list
+  #echo " " | doas -u $1 mail -s "subscribe" institute-join@lists.tildeverse.org
+
+  # lock down the users' history files so they can't be deleted or truncated (bash and ksh only)
+  doas -u "$1" touch /home/$1/.history
+  doas -u "$1" touch /home/$1/.bash_history
+  chflags uappnd /home/$1/.history
+  chflags uappnd /home/$1/.bash_history
+
+  # announce the new user's creation on mastodon
+  # then copy their ssh key to their home directory
+  /admin/bin/toot.py "Welcome new user ~$1!"
+  cut </etc/passwd -d ":" -f1 >/var/www/htdocs/userlist
+  echo "$3" | tee /home/$1/.ssh/authorized_keys
+  ;;
+esac