Mercurial > gemma
view pkg/soap/validate.go @ 2190:ecb0ad836aa0
linting
author | Thomas Junk <thomas.junk@intevation.de> |
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date | Tue, 12 Feb 2019 10:04:01 +0100 |
parents | bd09d6ad4c14 |
children | 31973f6f5cca |
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// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> package soap import ( "bytes" "encoding/xml" "fmt" "io" "io/ioutil" "os" "os/exec" "path/filepath" "strings" "golang.org/x/net/html/charset" "gemma.intevation.de/gemma/pkg/config" ) const linter = "xmllint" type ( ValidationError string foundError string ) func (ef foundError) Error() string { return string(ef) } func (ve ValidationError) Error() string { return string(ve) } func FindSchema(name string) (string, error) { name = strings.ToLower(name) config.WaitReady() for _, root := range filepath.SplitList(config.SchemaDirs()) { err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error { if err != nil { return err } if info == nil { return nil } if info.Mode().IsRegular() && strings.ToLower(info.Name()) == name { return foundError(path) } return nil }) if path, ok := err.(foundError); ok { return string(path), nil } if err != nil { return "", err } } return "", nil } func ValidateFile(fname, schema string, dst interface{}) error { f, err := os.Open(fname) if err != nil { return err } defer f.Close() return Validate(f, schema, dst) } func Validate(r io.Reader, schema string, dst interface{}) error { schemaPath, err := FindSchema(schema) if err != nil { return err } if schemaPath == "" { return fmt.Errorf("no schema file '%s' found", schema) } linterPath, err := exec.LookPath(linter) if err != nil { return err } type envelope struct { _ xml.Name `xml:"http://schemas.xmlsoap.org/soap/envelope/ Envelope"` Body *struct { Inner []byte `xml:",innerxml"` } `xml:"http://schemas.xmlsoap.org/soap/envelope/ Body"` } content, err := ioutil.ReadAll(r) if err != nil { return err } dec := xml.NewDecoder(bytes.NewReader(content)) dec.CharsetReader = charset.NewReaderLabel var env envelope if err := dec.Decode(&env); err != nil { return err } // It has a body -> throw envelope away. if env.Body != nil && len(env.Body.Inner) > 0 { content = env.Body.Inner } cmd := exec.Command( linterPath, "--schema", schemaPath, "--noout", "-") var stderr bytes.Buffer cmd.Stdin = bytes.NewReader(content) cmd.Stderr = &stderr cmd.Stdout = ioutil.Discard if err := cmd.Start(); err != nil { return err } if err := cmd.Wait(); err != nil { if err2, ok := err.(*exec.ExitError); ok { if !err2.Success() { return ValidationError(stderr.String()) } } return err } // Validation successful -> Deserialize. dec = xml.NewDecoder(bytes.NewReader(content)) dec.CharsetReader = charset.NewReaderLabel return dec.Decode(dst) }