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# Which Problems Are Solved Currently ZITADEL defines organization and instance member roles and permissions in defaults.yaml. The permission check is done on API call level. For example: "is this user allowed to make this call on this org". This makes sense on the V1 API where the API is permission-level shaped. For example, a search for users always happens in the context of the organization. (Either the organization the calling user belongs to, or through member ship and the x-zitadel-orgid header. However, for resource based APIs we must be able to resolve permissions by object. For example, an IAM_OWNER listing users should be able to get all users in an instance based on the query filters. Alternatively a user may have user.read permissions on one or more orgs. They should be able to read just those users. # How the Problems Are Solved ## Role permission mapping The role permission mappings defined from `defaults.yaml` or local config override are synchronized to the database on every run of `zitadel setup`: - A single query per **aggregate** builds a list of `add` and `remove` actions needed to reach the desired state or role permission mappings from the config. - The required events based on the actions are pushed to the event store. - Events define search fields so that permission checking can use the indices and is strongly consistent for both query and command sides. The migration is split in the following aggregates: - System aggregate for for roles prefixed with `SYSTEM` - Each instance for roles not prefixed with `SYSTEM`. This is in anticipation of instance level management over the API. ## Membership Current instance / org / project membership events now have field table definitions. Like the role permissions this ensures strong consistency while still being able to use the indices of the fields table. A migration is provided to fill the membership fields. ## Permission check I aimed keeping the mental overhead to the developer to a minimal. The provided implementation only provides a permission check for list queries for org level resources, for example users. In the `query` package there is a simple helper function `wherePermittedOrgs` which makes sure the underlying database function is called as part of the `SELECT` query and the permitted organizations are part of the `WHERE` clause. This makes sure results from non-permitted organizations are omitted. Under the hood: - A Pg/PlSQL function searches for a list of organization IDs the passed user has the passed permission. - When the user has the permission on instance level, it returns early with all organizations. - The functions uses a number of views. The views help mapping the fields entries into relational data and simplify the code use for the function. The views provide some pre-filters which allow proper index usage once the final `WHERE` clauses are set by the function. # Additional Changes # Additional Context Closes #9032 Closes https://github.com/zitadel/zitadel/issues/9014 https://github.com/zitadel/zitadel/issues/9188 defines follow-ups for the new permission framework based on this concept.
40 lines
892 B
Go
40 lines
892 B
Go
package setup
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import (
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"context"
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"embed"
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"fmt"
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"github.com/zitadel/logging"
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"github.com/zitadel/zitadel/internal/database"
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"github.com/zitadel/zitadel/internal/eventstore"
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)
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type InitPermissionFunctions struct {
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eventstoreClient *database.DB
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}
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var (
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//go:embed 46/*.sql
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permissionFunctions embed.FS
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)
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func (mig *InitPermissionFunctions) Execute(ctx context.Context, _ eventstore.Event) error {
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statements, err := readStatements(permissionFunctions, "46", "")
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if err != nil {
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return err
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}
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for _, stmt := range statements {
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logging.WithFields("file", stmt.file, "migration", mig.String()).Info("execute statement")
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if _, err := mig.eventstoreClient.ExecContext(ctx, stmt.query); err != nil {
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return fmt.Errorf("%s %s: %w", mig.String(), stmt.file, err)
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}
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}
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return nil
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}
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func (*InitPermissionFunctions) String() string {
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return "46_init_permission_functions"
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}
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