commit 94f60919e7c5b93876e8d102f59f8446a3696537
Author: Orion Kindel <cakekindel@gmail.com>
Date:   Thu May 18 21:46:07 2023 -0500

    init

diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+ext
diff --git a/src/000-entry.sh b/src/000-entry.sh
new file mode 100755
index 0000000..faa57b0
--- /dev/null
+++ b/src/000-entry.sh
@@ -0,0 +1,46 @@
+#! /usr/bin/bash
+
+set -xo pipefail
+
+domain_root="${DOMAIN_ROOT:-orionkindel.com}"
+subdomain_gitea="${SUBDOMAIN_GITEA:-git}"
+
+uid_git="${UID_GIT:-1000}"
+
+# NOTE: hard-coded in ./gitea-docker-compose.yml, ./nginx.conf
+port_gitea_public="${PORT_GITEA:-8880}"
+port_gitea_internal="${PORT_GITEA:-8881}"
+
+# Creates a login session for `user` (positional argument 1) in their home directory,
+# and executes a bash command string (positional argument 2) as `user`.
+#
+# Differs from `su` in that the new session is entirely isolated from the current
+# environment and allows using user-space session utils like systemctl.
+#
+# Currently uses `ssh $1@localhost` using `/root/.ssh/local_ed25519`, meaning user
+# must have `/root/.ssh/local_ed25519.pub` in their `authorized_keys`.
+#
+# ```sh
+# > doas orion "pwd"
+# /home/orion/
+# > export FOO=bar
+# > doas orion "echo $FOO"
+# bar
+# > doas orion "echo \$FOO"
+# > doas orion "systemctl --user status docker"
+# ...
+# ```
+function doas {
+  ssh -F /dev/null -o IdentitiesOnly=yes -i /root/.ssh/local_ed25519 $1@localhost "set -xo pipefail; $2"
+}
+
+rm /root/.ssh/local_ed25519 || true;
+rm /root/.ssh/local_ed25519.pub || true;
+ssh-keygen -t ed25519 -C "local" -f /root/.ssh/local_ed25519 -P ''
+
+source ./010-apt.sh
+source ./020-users.sh
+source ./030-net.sh
+source ./031-routing.sh
+source ./040-gitea.sh
+source ./999-post.sh
diff --git a/src/010-apt.sh b/src/010-apt.sh
new file mode 100755
index 0000000..5ab0a47
--- /dev/null
+++ b/src/010-apt.sh
@@ -0,0 +1,33 @@
+#! /usr/bin/bash
+
+apt-get update -y
+apt-get upgrade -y
+apt-get install -fy \
+  nginx \
+  man \
+  neovim \
+  ca-certificates \
+  gnupg \
+  curl \
+  wget \
+  dbus-user-session \
+  uidmap \
+  ufw \
+  certbot \
+  python3-certbot-nginx \
+  git \
+  systemd-container \
+  fuse-overlayfs \
+  slirp4netns
+
+install -m 0755 -d /etc/apt/keyrings
+rm /etc/apt/keyrings/docker.gpg || true;
+curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
+chmod a+r /etc/apt/keyrings/docker.gpg
+echo \
+  "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian \
+  "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
+  tee /etc/apt/sources.list.d/docker.list > /dev/null
+
+apt-get update -y
+apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
diff --git a/src/020-users.sh b/src/020-users.sh
new file mode 100644
index 0000000..120afb3
--- /dev/null
+++ b/src/020-users.sh
@@ -0,0 +1,38 @@
+#! /usr/bin/bash
+
+function user_del_if_exist {
+  if id "$1" &>/dev/null; then
+    set +x
+    grp=`id -g $1`
+    # https://i.imgflip.com/3ggbcq.jpg
+    until userdel $1; do pkill -eU $1 || true; done;
+    set -x
+    groupdel $grp || true
+    rm -rf /home/$1 || true
+  fi
+}
+
+function user_init {
+  loginctl enable-linger $1
+
+  rm -r /home/$1/.ssh || true
+  mkdir /home/$1/.ssh
+  chown $1:$1 /home/$1/.ssh
+
+  cp /root/.ssh/local_ed25519.pub /home/$1/.ssh/authorized_keys
+  chown $1:$1 /home/$1/.ssh/authorized_keys
+  chmod 755 /home/$1/.ssh/authorized_keys
+
+  doas $1 "
+  echo $2 >> ~/.ssh/authorized_keys;
+  echo \"export DOCKER_HOST=unix:///run/user/`id -u $1`/docker.sock\" > ~/.bashrc;
+  echo \"export PATH=/usr/bin:/usr/sbin:$PATH\" >> ~/.bashrc;
+  source ~/.bashrc;
+  dockerd-rootless-setuptool.sh install;
+  systemctl --user enable docker;
+  systemctl --user start docker;
+  "
+}
+
+source ./021-user-gitea.sh
+source ./022-user-others.sh
diff --git a/src/021-user-gitea.sh b/src/021-user-gitea.sh
new file mode 100644
index 0000000..c346538
--- /dev/null
+++ b/src/021-user-gitea.sh
@@ -0,0 +1,42 @@
+#! /usr/bin/bash
+
+## backup gitea data to /tmp
+mkdir -p /tmp/git
+if id git &>/dev/null; then
+  mkdir -p /tmp/git
+  mv /home/git/data   /tmp/git/data
+  mv /home/git/config /tmp/git/config
+else
+  mkdir /tmp/git
+  mkdir /tmp/git/data
+  mkdir /tmp/git/data/git
+  mkdir /tmp/git/config
+fi
+
+## delete and recreate `git` user
+user_del_if_exist git
+
+echo $uid_git
+groupadd --gid $uid_git git
+useradd \
+  --gid $uid_git \
+  --uid $uid_git \
+  --create-home \
+  --shell /bin/bash \
+  git
+
+read -p 'enter public ssh key allowing sessions as `git`:' git_ssh_pub
+user_init git $git_ssh_pub
+
+## restore homedir
+mv /tmp/git/data   /home/git/
+mv /tmp/git/config /home/git/
+
+cp ./gitea-docker-compose.yml /home/git/docker-compose.yml
+cp ./gitea-app.ini            /home/git/config/app.ini
+
+chown -R git:git /home/git
+
+## docker user perms
+chown -R 1000:1000 /home/git/data
+chown -R 1000:1000 /home/git/config
diff --git a/src/022-user-others.sh b/src/022-user-others.sh
new file mode 100755
index 0000000..02200f7
--- /dev/null
+++ b/src/022-user-others.sh
@@ -0,0 +1,6 @@
+#! /usr/bin/bash
+
+user_del_if_exist orion
+useradd --create-home --shell /bin/bash orion
+read -p 'enter public ssh key allowing sessions as `orion`:' orion_ssh_pub
+user_init orion $orion_ssh_pub
diff --git a/src/030-net.sh b/src/030-net.sh
new file mode 100755
index 0000000..89ab99a
--- /dev/null
+++ b/src/030-net.sh
@@ -0,0 +1,9 @@
+#! /usr/bin/bash
+
+ufw default deny incoming
+ufw default allow outgoing
+ufw status verbose
+ufw allow ssh
+ufw allow 'Nginx Full'
+ufw allow 8880/tcp
+ufw --force enable
diff --git a/src/031-routing.sh b/src/031-routing.sh
new file mode 100755
index 0000000..4ac6ddf
--- /dev/null
+++ b/src/031-routing.sh
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+#! /usr/bin/bash
+
+mkdir -p /etc/nginx/sites-available
+mkdir -p /etc/nginx/sites-enabled
+
+rm -r /etc/nginx/sites-available/$domain_root 2>/dev/null || true
+rm -r /etc/nginx/sites-enabled/$domain_root 2>/dev/null || true
+
+touch /etc/nginx/sites-available/$domain_root
+ln -s /etc/nginx/sites-available/$domain_root /etc/nginx/sites-enabled/$domain_root
+
+cp ./nginx.conf /etc/nginx/sites-available/$domain_root
+chmod 777 /etc/nginx/sites-available/$domain_root
+
+systemctl enable nginx
+systemctl start nginx
diff --git a/src/040-gitea.sh b/src/040-gitea.sh
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index 0000000..a66a233
--- /dev/null
+++ b/src/040-gitea.sh
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+#! /usr/bin/bash
+
+doas git "
+docker container ls -q | xargs -I{} docker container stop {};
+docker container ls -aq | xargs -I{} docker container rm -f {};
+
+docker compose pull;
+docker compose up -d;
+"
+
+## SSH Passthrough
+## https://docs.gitea.io/en-us/installation/install-with-docker-rootless/#ssh-container-passthrough
+##
+## Note: 999-post.sh restarts adds a rule to sshd_config and restarts sshd, which
+## is required for SSH passthrough to start working.
+rm /usr/local/bin/gitea-shell || true;
+
+cat << "EOF" >> /usr/local/bin/gitea-shell
+#!/bin/sh
+/usr/bin/docker context use rootless
+/usr/bin/docker exec -i \
+  --env SSH_ORIGINAL_COMMAND="$SSH_ORIGINAL_COMMAND" \
+  gitea \
+  sh "$@"
+EOF
+
+chmod +x /usr/local/bin/gitea-shell
+usermod -s /usr/local/bin/gitea-shell git
diff --git a/src/999-post.sh b/src/999-post.sh
new file mode 100644
index 0000000..79df93d
--- /dev/null
+++ b/src/999-post.sh
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+#! /usr/bin/bash
+
+# https://docs.gitea.io/en-us/installation/install-with-docker-rootless/#ssh-container-passthrough
+cp ./sshd_config /etc/ssh/sshd_config
+systemctl restart sshd
diff --git a/src/gitea-app.ini b/src/gitea-app.ini
new file mode 100644
index 0000000..3790f36
--- /dev/null
+++ b/src/gitea-app.ini
@@ -0,0 +1,55 @@
+; https://github.com/go-gitea/gitea/blob/main/custom/conf/app.example.ini
+
+APP_NAME = git@orionkindel.com
+RUN_MODE = prod
+
+[server]
+DOMAIN           = localhost
+SSH_DOMAIN       = localhost
+HTTP_PORT        = 3000
+ROOT_URL         = git.orionkindel.com
+DISABLE_SSH      = false
+SSH_PORT         = 22
+SSH_LISTEN_PORT  = 22
+LFS_START_SERVER = false
+
+[database]
+PATH = /data/gitea/gitea.db
+DB_TYPE = sqlite3
+HOST    = localhost:3306
+NAME    = gitea
+USER    = root
+PASSWD  = 
+LOG_SQL = false
+
+[indexer]
+ISSUE_INDEXER_PATH = /data/gitea/indexers/issues.bleve
+
+[session]
+PROVIDER_CONFIG = /data/gitea/sessions
+
+[picture]
+AVATAR_UPLOAD_PATH = /data/gitea/avatars
+REPOSITORY_AVATAR_UPLOAD_PATH = /data/gitea/repo-avatars
+
+[attachment]
+PATH = /data/gitea/attachments
+
+[log]
+MODE = console
+LEVEL = info
+ROUTER = console
+ROOT_PATH = /data/gitea/log
+
+[security]
+INSTALL_LOCK = false
+SECRET_KEY   = 
+REVERSE_PROXY_LIMIT = 1
+REVERSE_PROXY_TRUSTED_PROXIES = *
+
+[service]
+DISABLE_REGISTRATION = false
+REQUIRE_SIGNIN_VIEW  = false
+
+[lfs]
+PATH = /data/git/lfs
diff --git a/src/gitea-docker-compose.yml b/src/gitea-docker-compose.yml
new file mode 100644
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--- /dev/null
+++ b/src/gitea-docker-compose.yml
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+version: "3"
+
+name: gitea_compose
+
+services:
+  server:
+    image: gitea/gitea:dev-rootless
+    container_name: gitea
+    user: "1000"
+    restart: always
+    volumes:
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro
+      - /home/git/data/:/var/lib/gitea/data
+      - /home/git/git/:/var/lib/gitea/git
+      - /home/git/config/:/etc/gitea
+    ports:
+      - "8881:3000"
+      - "127.0.0.1:2222:22"
diff --git a/src/nginx.conf b/src/nginx.conf
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--- /dev/null
+++ b/src/nginx.conf
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+server {
+  listen 80;
+  server_name git.orionkindel.com;
+
+  location / {
+    client_max_body_size 512M;
+    proxy_pass http://localhost:8881;
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+  }
+}
diff --git a/src/sshd_config b/src/sshd_config
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index 0000000..84dd537
--- /dev/null
+++ b/src/sshd_config
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+# $OpenBSD: sshd_config,v 1.103 2018/04/09 20:41:22 tj Exp $
+
+Include /etc/ssh/sshd_config.d/*.conf
+
+ChallengeResponseAuthentication no
+
+UsePAM yes
+
+X11Forwarding yes
+PrintMotd no
+
+AcceptEnv LANG LC_*
+
+Subsystem	sftp	/usr/lib/openssh/sftp-server
+
+PasswordAuthentication no
+
+Match User git
+  AuthorizedKeysCommandUser git
+  AuthorizedKeysCommand /usr/bin/docker exec -i gitea /usr/local/bin/gitea keys -e git -u %u -t %t -k %k