updated certbot section to verify files

setup.sh

@@ -25,6 +25,7 @@ unset KeyPath
 unset CAChainPath
 unset DHPath
 
+certbotFiles=(cert.pem chain.pem fullchain.pem privkey.pem)
 detectedIP=$(ip route get 1 | sed -n 's/^.*src \([0-9.]*\) .*$/\1/p')
 regexIP4="(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])"
 regexHostname="(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])"
@@ -103,11 +104,47 @@ if [ "${useCertbot}" -eq 1 ]; then
                 ;;
             *)
                 # check hostname for validity
-                if [[ "${inputCertbotDomain}" =~ ^${regexHostname}$ ]]; then
+                if [[ ! "${inputCertbotDomain}" =~ ^${regexHostname}$ ]]; then
+                    echo -e "\n${err}Invalid hostname${norm}"
+                else
+                    # check if Certbot files exist in path implied from hostname
+                    echo -e "\n${cyan}Verifying Certbot files..."
+                    echo -e "(/etc/letsencrypt/live/${inputCertbotDomain}/...)${norm}"
+                    certbotBadFile=()
+                    for certbotFile in "${certbotFiles[@]}"; do
+                        if [ -f "/etc/letsencrypt/live/${inputCertbotDomain}/$certbotFile" ]; then
+                            echo -e "File: ${certbotFile} -- ${ok}OK${norm}"
+                        else
+                            echo -e "File: ${certbotFile} -- ${err}X${norm}"
+                            certbotBadFile+=("${certbotFile}")
+                        fi
+                    done
+                    if [ -z "${certbotBadFile}" ]; then
+                        echo -e "${cyan}Certbot files seem intact${norm}"
                         CertbotDomain="${inputCertbotDomain}"
                         break
                     else
-                    echo -e "\n${err}Invalid hostname${norm}"
+                        echo -e "\n${err}The following files are missing from ${inputCertbotDomain}:"
+                        echo -e "${warn}${certbotBadFile[@]}${norm}"
+                        echo -e "${err}These files are all required for proper SSL operation of NGINX using Certbot.${norm}\n"
+                        while true; do
+                            read -p "Do you want to use these settings anyways? " yn
+                            case "${yn}" in
+                                    [Yy]*)
+                                        CertbotDomain="${inputCertbotDomain}"
+                                        break
+                                        ;;
+                                    [Nn]*)
+                                        break
+                                        ;;
+                                    *)
+                                        ;;
+                            esac
+                        done
+                    fi
+                    if [ -n "${CertbotDomain}" ]; then
+                        break
+                    fi
                 fi
                 ;;
         esac