Add `--deploy-hook nghttpx`

Copied and modified from `deploy/vsftpd.sh`.

See changes from `deploy/vsftpd.sh` using
`diff -u <(sed 's/vsftpd/nghttpx/g; s/VSFTPD/NGHTTPX/g;' vsftpd.sh) nghttpx.sh`.

deploy/nghttpx.sh

@@ -0,0 +1,109 @@
+#!/usr/bin/env sh
+
+#Here is a script to deploy cert to nghttpx server.
+
+#returns 0 means success, otherwise error.
+
+#DEPLOY_NGHTTPX_CONF="/etc/nghttpx/nghttpx.conf"
+#DEPLOY_NGHTTPX_RELOAD="service nghttpx restart"
+
+########  Public functions #####################
+
+#domain keyfile certfile cafile fullchain
+nghttpx_deploy() {
+  _cdomain="$1"
+  _ckey="$2"
+  _ccert="$3"
+  _cca="$4"
+  _cfullchain="$5"
+
+  _debug _cdomain "$_cdomain"
+  _debug _ckey "$_ckey"
+  _debug _ccert "$_ccert"
+  _debug _cca "$_cca"
+  _debug _cfullchain "$_cfullchain"
+
+  _ssl_path="/etc/acme.sh/nghttpx"
+  if ! mkdir -p "$_ssl_path"; then
+    _err "Can not create folder:$_ssl_path"
+    return 1
+  fi
+
+  _info "Copying key and cert"
+  _real_key="$_ssl_path/$_cdomain.key"
+  if ! cat "$_ckey" >"$_real_key"; then
+    _err "Error: write key file to: $_real_key"
+    return 1
+  fi
+  _real_fullchain="$_ssl_path/$_cdomain.chain.pem"
+  if ! cat "$_cfullchain" >"$_real_fullchain"; then
+    _err "Error: write key file to: $_real_fullchain"
+    return 1
+  fi
+
+  DEFAULT_NGHTTPX_RELOAD="service nghttpx restart"
+  _reload="${DEPLOY_NGHTTPX_RELOAD:-$DEFAULT_NGHTTPX_RELOAD}"
+
+  if [ -z "$IS_RENEW" ]; then
+    DEFAULT_NGHTTPX_CONF="/etc/nghttpx/nghttpx.conf"
+    _nghttpx_conf="${DEPLOY_NGHTTPX_CONF:-$DEFAULT_NGHTTPX_CONF}"
+    if [ ! -f "$_nghttpx_conf" ]; then
+      if [ -z "$DEPLOY_NGHTTPX_CONF" ]; then
+        _err "nghttpx conf is not found, please define DEPLOY_NGHTTPX_CONF"
+        return 1
+      else
+        _err "It seems that the specified nghttpx conf is not valid, please check."
+        return 1
+      fi
+    fi
+    if [ ! -w "$_nghttpx_conf" ]; then
+      _err "The file $_nghttpx_conf is not writable, please change the permission."
+      return 1
+    fi
+    _backup_conf="$DOMAIN_BACKUP_PATH/nghttpx.conf.bak"
+    _info "Backup $_nghttpx_conf to $_backup_conf"
+    mkdir -p "$DOMAIN_BACKUP_PATH"
+    cp "$_nghttpx_conf" "$_backup_conf"
+
+    _info "Modify nghttpx conf: $_nghttpx_conf"
+    if echo "subcert=$_real_key:$_real_fullchain" >> "$_nghttpx_conf"; then
+      _info "Set config success!"
+    else
+      _err "Config nghttpx server error, please report bug to us."
+      _info "Restoring nghttpx conf"
+      if cat "$_backup_conf" >"$_nghttpx_conf"; then
+        _info "Restore conf success"
+        eval "$_reload"
+      else
+        _err "Oops, error restore nghttpx conf, please report bug to us."
+      fi
+      return 1
+    fi
+  fi
+
+  _info "Run reload: $_reload"
+  if eval "$_reload"; then
+    _info "Reload success!"
+    if [ "$DEPLOY_NGHTTPX_CONF" ]; then
+      _savedomainconf DEPLOY_NGHTTPX_CONF "$DEPLOY_NGHTTPX_CONF"
+    else
+      _cleardomainconf DEPLOY_NGHTTPX_CONF
+    fi
+    if [ "$DEPLOY_NGHTTPX_RELOAD" ]; then
+      _savedomainconf DEPLOY_NGHTTPX_RELOAD "$DEPLOY_NGHTTPX_RELOAD"
+    else
+      _cleardomainconf DEPLOY_NGHTTPX_RELOAD
+    fi
+    return 0
+  else
+    _err "Reload error, restoring"
+    if cat "$_backup_conf" >"$_nghttpx_conf"; then
+      _info "Restore conf success"
+      eval "$_reload"
+    else
+      _err "Oops, error restore nghttpx conf, please report bug to us."
+    fi
+    return 1
+  fi
+  return 0
+}