mirror of
https://github.com/LamGC/quickly-conf-sshd.git
synced 2025-04-29 14:17:32 +00:00
206 lines
7.3 KiB
Bash
Executable File
206 lines
7.3 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
########## 一些配置 ##########
|
|
|
|
# 默认获取 SSH key 的地方，一般是 Github.
|
|
sshkey_url="{{ SSH_KEY_URL }}"
|
|
# 默认的 Cron 执行计划, 每天凌晨 0 点执行
|
|
default_cron="{{ DEFAULT_CRON }}"
|
|
# 脚本 Url
|
|
script_url="{{ SCRIPT_URL }}"
|
|
|
|
############ 脚本区 ##########
|
|
|
|
script_params=$*
|
|
has_param() {
|
|
for param in $script_params; do
|
|
for tParam in $@; do
|
|
if [ "$tParam" == "$param" ]; then
|
|
echo "true"
|
|
return
|
|
fi
|
|
done
|
|
done
|
|
echo "false"
|
|
}
|
|
|
|
get_param_value() {
|
|
local find=false
|
|
for param in $script_params; do
|
|
if [ "$find" == "true" ]; then
|
|
if [[ $param == -* ]]; then
|
|
return
|
|
fi
|
|
echo $param
|
|
return
|
|
fi
|
|
for tParam in $@; do
|
|
if [ "$tParam" == "$param" ]; then
|
|
find=true
|
|
break
|
|
fi
|
|
done
|
|
done
|
|
}
|
|
|
|
# 帮助信息.
|
|
if [ $(has_param "-h" "--help") == "true" ]; then
|
|
echo "Usage: $0 [options]"
|
|
echo "Options:"
|
|
echo " -h, --help Print this help message."
|
|
echo ""
|
|
echo "Available to any user: "
|
|
echo " -c, --cron [cron | false] Configure Crontab to automatically update ssh keys,"
|
|
echo " Cron expression can be specified, If false is specified, "
|
|
echo " Crontab settings will be deleted automatically."
|
|
echo ""
|
|
echo " -o, --only-update-keys Only update SSH keys, do not configure ssh server."
|
|
echo " -u, --update-self Update this script to the latest version."
|
|
echo ""
|
|
echo "only available when the script is executed as root:"
|
|
echo " -n, --no-install-sshd Do not install SSH Server."
|
|
echo " -p, --allow-root-passwd <yes | no> Allow Root to log in with a password."
|
|
echo ""
|
|
exit 0
|
|
fi
|
|
|
|
update_sshkeys() {
|
|
if [ "$sshkey_url" == "" ]; then
|
|
echo "Please specify the URL of the SSH public key."
|
|
exit 1
|
|
fi
|
|
echo "Downloading SSH public key from '$sshkey_url'"
|
|
mkdir -p ~/.ssh
|
|
local ssh_keys=$(curl -s $sshkey_url)
|
|
if [ $? -ne 0 ] || [ "$ssh_keys" == "" ]; then
|
|
echo "Failed to download SSH public key at $(date '+%Y-%m-%d %H:%M:%S')"
|
|
exit 1
|
|
fi
|
|
echo "-------------------- SSH Keys --------------------"
|
|
echo "$ssh_keys"
|
|
echo "--------------------------------------------------"
|
|
echo "$ssh_keys" > ~/.ssh/authorized_keys
|
|
chmod 600 ~/.ssh/authorized_keys
|
|
# 输出更新成功，需要附带时间日期
|
|
echo "SSH public key updated successfully at $(date '+%Y-%m-%d %H:%M:%S')"
|
|
}
|
|
|
|
# 检查是否只更新密钥.
|
|
if [ $(has_param "-o" "--only-update-keys") == "true" ]; then
|
|
update_sshkeys
|
|
exit 0
|
|
fi
|
|
|
|
# 检查是否指定了 --update-self
|
|
if [ $(has_param "-u" "--update-self") == "true" ]; then
|
|
echo "Updating conf-sshd script..."
|
|
cp $0 ~/.conf-sshd/conf-sshd.sh.bak
|
|
curl -s $script_url > $0 || cp ~/.conf-sshd/conf-sshd.sh.bak $0 && echo "Script update failed at $(date '+%Y-%m-%d %H:%M:%S')" && exit 1
|
|
chmod +x ~/.conf-sshd/conf-sshd.sh
|
|
echo "Script updated successfully at $(date '+%Y-%m-%d %H:%M:%S')"
|
|
exit 0
|
|
fi
|
|
|
|
# 检查 /usr/sbin/sshd 是否存在，且 /usr/sbin/sshd 执行后退出代码为 0
|
|
/usr/sbin/sshd -T > /dev/null
|
|
if [ $? -ne 0 ] && [ $(has_param "-n" "--no-install-sshd") == "false" ]; then
|
|
if [ $(id -u) -eq 0 ]; then
|
|
echo "The ssh server is not installed, and the script is executed as root, so it will be installed."
|
|
if [ -f /etc/redhat-release ]; then
|
|
yum install -y openssh-server
|
|
elif [ -f /etc/debian_version ]; then
|
|
apt-get update
|
|
apt-get install -y openssh-server
|
|
fi
|
|
echo "The ssh server has been installed."
|
|
else
|
|
echo "The ssh server is not installed, but the script is executed as a non-root user and cannot be installed."
|
|
exit 1
|
|
fi
|
|
else
|
|
echo "The ssh server is already installed."
|
|
fi
|
|
|
|
# 检查是否指定了 --allow-root-passwd
|
|
if [ $(has_param "-p" "--allow-root-passwd") == "true" ]; then
|
|
# 检查当前用户是否为 root
|
|
if [ $(id -u) -eq 0 ]; then
|
|
# 获取参数值
|
|
allow_root_passwd=$(get_param_value "-p" "--allow-root-passwd" | tr '[:upper:]' '[:lower:]')
|
|
if [ "$allow_root_passwd" == "yes" ]; then
|
|
# 设置允许 root 使用密码登录
|
|
sed -i 's/^#?PermitRootLogin.*/PermitRootLogin yes/g' /etc/ssh/sshd_config
|
|
echo "Root user is allowed to log in with password."
|
|
elif [ "$allow_root_passwd" == "no" ]; then
|
|
# 设置禁止 root 使用密码登录
|
|
sed -i 's/^#?PermitRootLogin.*/PermitRootLogin prohibit-password/g' /etc/ssh/sshd_config
|
|
echo "Root user is prohibited from logging in with password."
|
|
else
|
|
echo "Please specify whether to allow root to log in with a password."
|
|
exit 1
|
|
fi
|
|
else
|
|
echo "The script is executed as a non-root user and cannot set whether to allow root to log in with a password."
|
|
exit 1
|
|
fi
|
|
fi
|
|
|
|
# 更新密钥.
|
|
update_sshkeys
|
|
|
|
# 检查是否指定了 --cron
|
|
if [ $(has_param "-c" "--cron") == "true" ]; then
|
|
# 检查 Crontab 是否已安装
|
|
if [ "$(command -v crontab)" == "" ]; then
|
|
if [ $(id -u) -eq 0 ]; then
|
|
echo "The crontab is not installed, and the script is executed as a root user, so it will be installed."
|
|
if [ -f /etc/redhat-release ]; then
|
|
yum install -y crontabs
|
|
elif [ -f /etc/debian_version ]; then
|
|
apt-get update
|
|
apt-get install -y cron
|
|
fi
|
|
echo "The crontab has been installed."
|
|
else
|
|
echo "The crontab is not installed, but the script is executed as a non-root user and cannot be installed."
|
|
exit 1
|
|
fi
|
|
else
|
|
echo "The crontab is already installed."
|
|
fi
|
|
cron=$(get_param_value "-c" "--cron" | tr '[:upper:]' '[:lower:]')
|
|
if [ "$cron" == "false" ]; then
|
|
# 检查 Crontab 是否已经设置
|
|
if [ "$(crontab -l | grep "conf-sshd.sh")" == "" ]; then
|
|
echo "Crontab will not be configured."
|
|
exit 0
|
|
else
|
|
crontab -l | grep -v "conf-sshd.sh" | crontab -
|
|
echo "Crontab has been removed."
|
|
exit 0
|
|
fi
|
|
else
|
|
if [ "$cron" == "" ]; then
|
|
cron=$default_cron
|
|
fi
|
|
# 将当前脚本移动到 ~/.conf-sshd/conf-sshd.sh 中.
|
|
mkdir -p ~/.conf-sshd
|
|
# 检查当前脚本是否为文件
|
|
if [ ! -f $0 ]; then
|
|
echo "Downloading conf-sshd script..."
|
|
curl -o ~/.conf-sshd/conf-sshd.sh $script_url
|
|
else
|
|
echo "Copying conf-sshd script..."
|
|
cp $0 ~/.conf-sshd/conf-sshd.sh
|
|
fi
|
|
chmod +x ~/.conf-sshd/conf-sshd.sh
|
|
echo "Install conf-sshd script successfully."
|
|
# 将当前脚本追加到当前用户的 Crontab 中
|
|
crontab -l > ~/.conf-sshd/crontab.old
|
|
echo "$cron \"/bin/bash ~/.conf-sshd/conf-sshd.sh -o\" >> ~/.conf-sshd/run.log" >> ~/.conf-sshd/crontab.old
|
|
crontab ~/.conf-sshd/crontab.old
|
|
rm ~/.conf-sshd/crontab.old
|
|
echo "Crontab has been configured.(Cron: '$cron')"
|
|
fi
|
|
fi
|