| 1 | package config |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | "net/url" |
| 6 | "reflect" |
| 7 | "slices" |
| 8 | ) |
| 9 | |
| 10 | // ValidateModelRuntimeContinuation checks every route reachable from an old |
| 11 | // frozen resolver, not only its foreground model. Endpoint edits are allowed |
| 12 | // by an explicit one-turn choice; revoked access/credentials never are. |
| 13 | func ValidateModelRuntimeContinuation(old, current *Config) error { |
| 14 | if old == nil || current == nil { |
| 15 | return fmt.Errorf("configuration cannot be verified") |
| 16 | } |
| 17 | if !reflect.DeepEqual(old.Permissions, current.Permissions) || !reflect.DeepEqual(old.Sandbox, current.Sandbox) || !reflect.DeepEqual(old.Secrets, current.Secrets) || !reflect.DeepEqual(old.Plugins, current.Plugins) { |
| 18 | return fmt.Errorf("permissions or runtime policy changed") |
| 19 | } |
| 20 | if !reflect.DeepEqual(old.Tools, current.Tools) || !reflect.DeepEqual(old.Network, current.Network) || !reflect.DeepEqual(old.Skills, current.Skills) { |
| 21 | return fmt.Errorf("tool or network policy changed") |
| 22 | } |
| 23 | for _, pair := range [][2]int{{old.Agent.MaxSubagentDepth, current.Agent.MaxSubagentDepth}, {old.Agent.MaxSubagentConcurrency, current.Agent.MaxSubagentConcurrency}, {old.Agent.MaxParallelWriters, current.Agent.MaxParallelWriters}} { |
| 24 | // Zero-value defaults require rebuilding rather than guessing a bound. |
| 25 | if pair[0] != pair[1] && (pair[0] <= 0 || pair[1] <= 0 || pair[1] < pair[0]) { |
| 26 | return fmt.Errorf("model execution limits changed") |
| 27 | } |
| 28 | } |
| 29 | for _, pair := range [][2]float64{{old.Agent.TaskCostBudget, current.Agent.TaskCostBudget}, {old.Agent.TaskTimeBudgetMinutes, current.Agent.TaskTimeBudgetMinutes}, {float64(old.Agent.GoalTokenBudget), float64(current.Agent.GoalTokenBudget)}} { |
| 30 | if pair[1] > 0 && (pair[0] <= 0 || pair[1] < pair[0]) { |
| 31 | return fmt.Errorf("model execution budgets were tightened") |
| 32 | } |
| 33 | } |
| 34 | for _, route := range old.Providers { |
| 35 | if old.Desktop.ProviderAccess != nil && !slices.Contains(old.Desktop.ProviderAccess, route.Name) { |
| 36 | continue |
| 37 | } |
| 38 | next, ok := current.Provider(route.Name) |
| 39 | if !ok || (current.Desktop.ProviderAccess != nil && !slices.Contains(current.Desktop.ProviderAccess, route.Name)) { |
| 40 | return fmt.Errorf("provider access was removed") |
| 41 | } |
| 42 | if route.APIKey() != next.APIKey() { |
| 43 | return fmt.Errorf("provider credentials changed") |
| 44 | } |
| 45 | if err := validateContinuationRoute(route, *next); err != nil { |
| 46 | return err |
| 47 | } |
| 48 | for _, model := range route.ModelList() { |
| 49 | if !slices.Contains(next.ModelList(), model) { |
| 50 | return fmt.Errorf("a model in the current runtime is no longer available") |
| 51 | } |
| 52 | } |
| 53 | } |
| 54 | return nil |
| 55 | } |
| 56 | |
| 57 | func validateContinuationRoute(before, after ProviderEntry) error { |
| 58 | if before.Kind != after.Kind || before.AuthHeader != after.AuthHeader || !reflect.DeepEqual(before.Headers, after.Headers) || !reflect.DeepEqual(before.ExtraBody, after.ExtraBody) { |
| 59 | return fmt.Errorf("provider authentication parameters changed") |
| 60 | } |
| 61 | for _, pair := range [][2]string{{before.BaseURL, after.BaseURL}, {before.ChatURL, after.ChatURL}, {before.RequestURL, after.RequestURL}} { |
| 62 | if !continuationEndpointAllowed(pair[0], pair[1]) { |
| 63 | return fmt.Errorf("provider authentication parameters changed") |
| 64 | } |
| 65 | } |
| 66 | // Overrides may include per-model cost caps and capability restrictions. |
| 67 | // Require a rebuild when their interpretation changed rather than assuming |
| 68 | // that only the foreground model's defaults constrain an old resolver. |
| 69 | if before.MaxOutputTokens != after.MaxOutputTokens || before.ContextWindow != after.ContextWindow || !reflect.DeepEqual(before.ModelOverrides, after.ModelOverrides) || !reflect.DeepEqual(before.SupportedEfforts, after.SupportedEfforts) { |
| 70 | return fmt.Errorf("model limits or capability restrictions changed") |
| 71 | } |
| 72 | return nil |
| 73 | } |
| 74 | |
| 75 | // Hosts may change with explicit confirmation. URLs carrying credentials or |
| 76 | // query parameters cannot be classified as an address-only edit safely. |
| 77 | func continuationEndpointAllowed(before, after string) bool { |
| 78 | if before == after { |
| 79 | return true |
| 80 | } |
| 81 | a, errA := url.Parse(before) |
| 82 | b, errB := url.Parse(after) |
| 83 | return errA == nil && errB == nil && a.User == nil && b.User == nil && a.RawQuery == b.RawQuery && a.Path == b.Path |
| 84 | } |
| 85 |