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fix(saml): improve error handling (#8928)

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# Which Problems Are Solved

There are multiple issues with the metadata and error handling of SAML:
- When providing a SAML metadata for an IdP, which cannot be processed,
the error will only be noticed once a user tries to use the IdP.
- Parsing for metadata with any other encoding than UTF-8 fails.
- Metadata containing an enclosing EntitiesDescriptor around
EntityDescriptor cannot be parsed.
- Metadata's `validUntil` value is always set to 48 hours, which causes
issues on external providers, if processed from a manual down/upload.
- If a SAML response cannot be parsed, only a generic "Authentication
failed" error is returned, the cause is hidden to the user and also to
actions.

# How the Problems Are Solved

- Return parsing errors after create / update and retrieval of an IdP in
the API.
- Prevent the creation and update of an IdP in case of a parsing
failure.
- Added decoders for encodings other than UTF-8 (including ASCII,
windows and ISO, [currently
supported](efd25daf28/encoding/ianaindex/ianaindex.go (L156)))
- Updated parsing to handle both `EntitiesDescriptor` and
`EntityDescriptor` as root element
- `validUntil` will automatically set to the certificate's expiration
time
- Unwrapped the hidden error to be returned. The Login UI will still
only provide a mostly generic error, but action can now access the
underlying error.

# Additional Changes

None

# Additional Context

reported by a customer
This commit is contained in:
Livio Spring
2024-12-03 11:38:28 +01:00
committed by GitHub
parent c07a5f4277
commit ffe9570776
10 changed files with 377 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
internal/command/org_idp.go
View File

@@ -10,6 +10,7 @@ import (
"github.com/zitadel/zitadel/internal/crypto"
"github.com/zitadel/zitadel/internal/domain"
"github.com/zitadel/zitadel/internal/eventstore"
"github.com/zitadel/zitadel/internal/idp/providers/saml"
"github.com/zitadel/zitadel/internal/repository/org"
"github.com/zitadel/zitadel/internal/zerrors"
)
@@ -446,9 +447,9 @@ func (c *Commands) UpdateOrgLDAPProvider(ctx context.Context, resourceOwner, id
return pushedEventsToObjectDetails(pushedEvents), nil
}
func (c *Commands) AddOrgSAMLProvider(ctx context.Context, resourceOwner string, provider SAMLProvider) (string, *domain.ObjectDetails, error) {
func (c *Commands) AddOrgSAMLProvider(ctx context.Context, resourceOwner string, provider *SAMLProvider) (id string, details *domain.ObjectDetails, err error) {
orgAgg := org.NewAggregate(resourceOwner)
id, err := c.idGenerator.Next()
id, err = c.idGenerator.Next()
if err != nil {
return "", nil, err
}
@@ -464,7 +465,7 @@ func (c *Commands) AddOrgSAMLProvider(ctx context.Context, resourceOwner string,
return id, pushedEventsToObjectDetails(pushedEvents), nil
}
func (c *Commands) UpdateOrgSAMLProvider(ctx context.Context, resourceOwner, id string, provider SAMLProvider) (*domain.ObjectDetails, error) {
func (c *Commands) UpdateOrgSAMLProvider(ctx context.Context, resourceOwner, id string, provider *SAMLProvider) (details *domain.ObjectDetails, err error) {
orgAgg := org.NewAggregate(resourceOwner)
writeModel := NewSAMLOrgIDPWriteModel(resourceOwner, id)
cmds, err := preparation.PrepareCommands(ctx, c.eventstore.Filter, c.prepareUpdateOrgSAMLProvider(orgAgg, writeModel, provider))
@@ -1703,7 +1704,7 @@ func (c *Commands) prepareUpdateOrgAppleProvider(a *org.Aggregate, writeModel *O
}
}
func (c *Commands) prepareAddOrgSAMLProvider(a *org.Aggregate, writeModel *OrgSAMLIDPWriteModel, provider SAMLProvider) preparation.Validation {
func (c *Commands) prepareAddOrgSAMLProvider(a *org.Aggregate, writeModel *OrgSAMLIDPWriteModel, provider *SAMLProvider) preparation.Validation {
return func() (preparation.CreateCommands, error) {
if provider.Name = strings.TrimSpace(provider.Name); provider.Name == "" {
return nil, zerrors.ThrowInvalidArgument(nil, "ORG-957lr0f8u3", "Errors.Invalid.Argument")
@@ -1718,6 +1719,9 @@ func (c *Commands) prepareAddOrgSAMLProvider(a *org.Aggregate, writeModel *OrgSA
}
provider.Metadata = data
}
if _, err := saml.ParseMetadata(provider.Metadata); err != nil {
return nil, zerrors.ThrowInvalidArgument(err, "ORG-SF3rwhgh", "Errors.Project.App.SAMLMetadataFormat")
}
return func(ctx context.Context, filter preparation.FilterToQueryReducer) ([]eventstore.Command, error) {
events, err := filter(ctx, writeModel.Query())
if err != nil {
@@ -1755,7 +1759,7 @@ func (c *Commands) prepareAddOrgSAMLProvider(a *org.Aggregate, writeModel *OrgSA
}
}
func (c *Commands) prepareUpdateOrgSAMLProvider(a *org.Aggregate, writeModel *OrgSAMLIDPWriteModel, provider SAMLProvider) preparation.Validation {
func (c *Commands) prepareUpdateOrgSAMLProvider(a *org.Aggregate, writeModel *OrgSAMLIDPWriteModel, provider *SAMLProvider) preparation.Validation {
return func() (preparation.CreateCommands, error) {
if writeModel.ID = strings.TrimSpace(writeModel.ID); writeModel.ID == "" {
return nil, zerrors.ThrowInvalidArgument(nil, "ORG-wwdwdlaya0", "Errors.Invalid.Argument")
@@ -1773,6 +1777,9 @@ func (c *Commands) prepareUpdateOrgSAMLProvider(a *org.Aggregate, writeModel *Or
if provider.Metadata == nil {
return nil, zerrors.ThrowInvalidArgument(nil, "ORG-j6spncd74m", "Errors.Invalid.Argument")
}
if _, err := saml.ParseMetadata(provider.Metadata); err != nil {
return nil, zerrors.ThrowInvalidArgument(err, "ORG-SFqqh42", "Errors.Project.App.SAMLMetadataFormat")
}
return func(ctx context.Context, filter preparation.FilterToQueryReducer) ([]eventstore.Command, error) {
events, err := filter(ctx, writeModel.Query())
if err != nil {