59 lines
1.9 KiB
Go
59 lines
1.9 KiB
Go
package runtime
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import (
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"path"
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"strings"
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"git.sendico.io/tech/sxchnge/product/app/api"
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"git.sendico.io/tech/sxchnge/shared/errors"
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)
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func validMount(value string) bool {
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if value == "" || value == "/" || !strings.HasPrefix(value, "/") || path.Clean(value) != value {
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return false
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}
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for _, c := range value {
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if c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' || c >= '0' && c <= '9' || strings.ContainsRune("/-._~", c) {
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continue
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}
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return false
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}
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return true
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}
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func overlaps(a, b string) bool {
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return a == b || strings.HasPrefix(a, b+"/") || strings.HasPrefix(b, a+"/")
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}
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func resolveMounts(configured []api.Mount, endpoint string, supported map[string]api.Installer) ([]api.Mount, error) {
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if !validMount(endpoint) {
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return nil, merrors.InvalidArgument("a canonical absolute API endpoint is required", "api_endpoint")
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}
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if configured == nil {
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configured = []api.Mount{{Version: "v1", Path: endpoint}}
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}
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seen := map[string]bool{}
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for i, mount := range configured {
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if supported[mount.Version] == nil {
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return nil, merrors.InvalidArgument("unknown or unavailable API version: "+mount.Version, "api.versions")
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}
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if seen[mount.Version] {
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return nil, merrors.InvalidArgument("duplicate API version: "+mount.Version, "api.versions")
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}
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seen[mount.Version] = true
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if !validMount(mount.Path) {
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return nil, merrors.InvalidArgument("invalid API mount: "+mount.Path, "api.versions")
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}
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for _, reserved := range []string{"/metrics", endpoint + "/metrics", endpoint + "/health"} {
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if mount.Path == reserved || strings.HasPrefix(mount.Path, reserved+"/") {
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return nil, merrors.InvalidArgument("API mount conflicts with operational endpoint", "api.versions")
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}
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}
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for _, previous := range configured[:i] {
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if overlaps(mount.Path, previous.Path) {
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return nil, merrors.InvalidArgument("overlapping API mounts", "api.versions")
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}
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}
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}
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return configured, nil
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}
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