Allow disabling of certificate verification for WebDAV (#98)

README.md

@@ -207,9 +207,9 @@ You can populate below template according to your requirements and use it as you
 # AWS_ENDPOINT_PROTO="https"
 
 # Setting this variable to `true` will disable verification of
-# SSL certificates. You shouldn't use this unless you use self-signed
+# SSL certificates for AWS_ENDPOINT. You shouldn't use this unless you use
-# certificates for your remote storage backend. This can only be used
+# self-signed certificates for your remote storage backend. This can only be
-# when AWS_ENDPOINT_PROTO is set to `https`.
+# used when AWS_ENDPOINT_PROTO is set to `https`.
 
 # AWS_ENDPOINT_INSECURE="true"
 
@@ -232,6 +232,12 @@ You can populate below template according to your requirements and use it as you
 
 # WEBDAV_PASSWORD="password"
 
+# Setting this variable to `true` will disable verification of
+# SSL certificates for WEBDAV_URL. You shouldn't use this unless you use
+# self-signed certificates for your remote storage backend.
+
+# WEBDAV_URL_INSECURE="true"
+
 # In addition to storing backups remotely, you can also keep local copies.
 # Pass a container-local path to store your backups if needed. You also need to
 # mount a local folder or Docker volume into that location (`/archive`

cmd/backup/config.go

@@ -36,6 +36,7 @@ type Config struct {
 	EmailSMTPUsername          string        `envconfig:"EMAIL_SMTP_USERNAME"`
 	EmailSMTPPassword          string        `envconfig:"EMAIL_SMTP_PASSWORD"`
 	WebdavUrl                  string        `split_words:"true"`
+	WebdavUrlInsecure          bool          `split_words:"true"`
 	WebdavPath                 string        `split_words:"true" default:"/"`
 	WebdavUsername             string        `split_words:"true"`
 	WebdavPassword             string        `split_words:"true"`

cmd/backup/script.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
+	"net/http"
 	"os"
 	"path"
 	"path/filepath"
@@ -146,6 +147,15 @@ func newScript() (*script, error) {
 		} else {
 			webdavClient := gowebdav.NewClient(s.c.WebdavUrl, s.c.WebdavUsername, s.c.WebdavPassword)
 			s.webdavClient = webdavClient
+			if s.c.WebdavUrlInsecure {
+				defaultTransport, ok := http.DefaultTransport.(*http.Transport)
+				if !ok {
+					return nil, errors.New("newScript: unexpected error when asserting type for http.DefaultTransport")
+				}
+				webdavTransport := defaultTransport.Clone()
+				webdavTransport.TLSClientConfig.InsecureSkipVerify = s.c.WebdavUrlInsecure
+				s.webdavClient.SetTransport(webdavTransport)
+			}
 		}
 	}
 

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/minio/minio-go/v7 v7.0.16
 	github.com/otiai10/copy v1.7.0
 	github.com/sirupsen/logrus v1.8.1
-	github.com/studio-b12/gowebdav v0.0.0-20211109083228-3f8721cd4b6f
+	github.com/studio-b12/gowebdav v0.0.0-20220128162035-c7b1ff8a5e62
 	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
 )

go.sum

@@ -660,6 +660,8 @@ github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/studio-b12/gowebdav v0.0.0-20211109083228-3f8721cd4b6f h1:L2NE7BXnSlSLoNYZ0lCwZDjdnYjCNYC71k9ClZUTFTs=
 github.com/studio-b12/gowebdav v0.0.0-20211109083228-3f8721cd4b6f/go.mod h1:bHA7t77X/QFExdeAnDzK6vKM34kEZAcE1OX4MfiwjkE=
+github.com/studio-b12/gowebdav v0.0.0-20220128162035-c7b1ff8a5e62 h1:b2nJXyPCa9HY7giGM+kYcnQ71m14JnGdQabMPmyt++8=
+github.com/studio-b12/gowebdav v0.0.0-20220128162035-c7b1ff8a5e62/go.mod h1:bHA7t77X/QFExdeAnDzK6vKM34kEZAcE1OX4MfiwjkE=
 github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
 github.com/syndtr/gocapability v0.0.0-20170704070218-db04d3cc01c8/go.mod h1:hkRG7XYTFWNJGYcbNJQlaLq0fg1yr4J4t/NcTQtrfww=
 github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2/go.mod h1:hkRG7XYTFWNJGYcbNJQlaLq0fg1yr4J4t/NcTQtrfww=

test/compose/docker-compose.yml

@@ -43,6 +43,7 @@ services:
       BACKUP_PRUNING_PREFIX: test
       GPG_PASSPHRASE: 1234secret
       WEBDAV_URL: http://webdav/
+      WEBDAV_URL_INSECURE: 'true'
       WEBDAV_PATH: /my/new/path/
       WEBDAV_USERNAME: test
       WEBDAV_PASSWORD: test