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Fix: Now give errors if lookup methods fail, refactor accordingly

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This commit is contained in:
JanHoefelmeyer 2025-01-29 09:02:18 +01:00
parent 69df4c0624
commit 7d74543bbb
1 changed files with 33 additions and 39 deletions
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72
cmd/csaf_checker/processor.go
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@ -1340,49 +1340,57 @@ func (p *processor) checkSecurityFolder(folder string) string {
// checkDNS checks if the "csaf.data.security.domain.tld" DNS record is available
// and serves the "provider-metadata.json".
// It returns an empty string if all checks are passed, otherwise the errormessage.
func (p *processor) checkDNS(domain string) string {
func (p *processor) checkDNS(domain string) {
p.badDNSPath.use()
client := p.httpClient()
path := "https://csaf.data.security." + domain
res, err := client.Get(path)
if err != nil {
return fmt.Sprintf("Fetching %s failed: %v", path, err)
p.badDNSPath.add(ErrorType,
fmt.Sprintf("Fetching %s failed: %v", path, err))
return
}
if res.StatusCode != http.StatusOK {
return fmt.Sprintf("Fetching %s failed. Status code %d (%s)",
path, res.StatusCode, res.Status)
p.badDNSPath.add(ErrorType,
fmt.Sprintf("Fetching %s failed. Status code %d (%s)",
path, res.StatusCode, res.Status))
}
hash := sha256.New()
defer res.Body.Close()
content, err := io.ReadAll(res.Body)
if err != nil {
return fmt.Sprintf("Error while reading the response from %s", path)
p.badDNSPath.add(ErrorType,
fmt.Sprintf("Error while reading the response from %s", path))
}
hash.Write(content)
if !bytes.Equal(hash.Sum(nil), p.pmd256) {
return fmt.Sprintf("%s does not serve the same provider-metadata.json as previously found", path)
p.badDNSPath.add(ErrorType,
fmt.Sprintf("%s does not serve the same provider-metadata.json as previously found",
path))
}
return ""
}
// checkWellknownMetadataReporter checks if the provider-metadata.json file is
// checkWellknown checks if the provider-metadata.json file is
// available under the /.well-known/csaf/ directory. Returns the errormessage if
// an error was encountered, or an empty string otherwise
func (p *processor) checkWellknown(domain string) string {
func (p *processor) checkWellknown(domain string) {
p.badWellknownMetadata.use()
client := p.httpClient()
path := "https://" + domain + "/.well-known/csaf/provider-metadata.json"
res, err := client.Get(path)
if err != nil {
return fmt.Sprintf("Fetching %s failed: %v", path, err)
p.badWellknownMetadata.add(ErrorType,
fmt.Sprintf("Fetching %s failed: %v", path, err))
}
if res.StatusCode != http.StatusOK {
return fmt.Sprintf("Fetching %s failed. Status code %d (%s)",
path, res.StatusCode, res.Status)
p.badWellknownMetadata.add(ErrorType, fmt.Sprintf("Fetching %s failed. Status code %d (%s)",
path, res.StatusCode, res.Status))
}
return ""
}
// checkWellknownSecurityDNS
@ -1401,50 +1409,36 @@ func (p *processor) checkWellknown(domain string) string {
// In that case, errors are returned.
func (p *processor) checkWellknownSecurityDNS(domain string) error {
warningsW := p.checkWellknown(domain)
p.checkWellknown(domain)
p.checkDNS(domain)
// Security check for well known (default) and legacy location
warningsS, sDMessage := p.checkSecurity(domain, false)
warnings, sDMessage := p.checkSecurity(domain, false)
// if the security.txt under .well-known was not okay
// check for a security.txt within its legacy location
sLMessage := ""
if warningsS == 1 {
warningsS, sLMessage = p.checkSecurity(domain, true)
if warnings == 1 {
warnings, sLMessage = p.checkSecurity(domain, true)
}
warningsD := p.checkDNS(domain)
p.badWellknownMetadata.use()
p.badSecurity.use()
p.badDNSPath.use()
var kind MessageType
if warningsS != 1 || warningsD == "" || warningsW == "" {
kind = WarnType
} else {
kind = ErrorType
}
// Info, Warning or Error depending on kind and warningS
kindSD := kind
if warningsS == 0 {
kindSD := WarnType
if warnings == 0 {
kindSD = InfoType
}
kindSL := kind
if warningsS == 2 {
kindSL := ErrorType
if warnings == 2 {
kindSL = InfoType
}
if warningsW != "" {
p.badWellknownMetadata.add(kind, warningsW)
}
p.badSecurity.add(kindSD, sDMessage)
// only if the well-known security.txt was not successful:
// report about the legacy location
if warningsS != 0 {
if warnings != 0 {
p.badSecurity.add(kindSL, sLMessage)
}
if warningsD != "" {
p.badDNSPath.add(kind, warningsD)
}
return nil
}