| 1 | package plugin |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "fmt" |
| 6 | "net" |
| 7 | "net/url" |
| 8 | "path/filepath" |
| 9 | "sort" |
| 10 | "strings" |
| 11 | |
| 12 | "reasonix/internal/mcplaunch" |
| 13 | "reasonix/internal/secrets" |
| 14 | "reasonix/internal/tool" |
| 15 | ) |
| 16 | |
| 17 | // projectLaunchIdentityDigest resolves a secret-free identity before a project |
| 18 | // server is authorized. For stdio this pins the real executable path and file |
| 19 | // content; for HTTP it normalizes the endpoint while retaining only header key |
| 20 | // names. Installed and host-session servers never call this path. |
| 21 | func projectLaunchIdentityDigest(ctx context.Context, s Spec) (string, error) { |
| 22 | identity, err := buildProjectLaunchIdentity(ctx, s) |
| 23 | if err != nil { |
| 24 | return "", err |
| 25 | } |
| 26 | return mcplaunch.ProjectLaunchIdentityDigest(identity) |
| 27 | } |
| 28 | |
| 29 | func buildProjectLaunchIdentity(ctx context.Context, s Spec) (mcplaunch.ProjectLaunchIdentity, error) { |
| 30 | transport := strings.ToLower(strings.TrimSpace(s.Type)) |
| 31 | if transport == "" { |
| 32 | transport = "stdio" |
| 33 | } |
| 34 | launchArgs := effectiveLaunchArgs(s) |
| 35 | if s.LauncherIdentityArgs != nil { |
| 36 | launchArgs = s.LauncherIdentityArgs |
| 37 | } |
| 38 | identity := mcplaunch.ProjectLaunchIdentity{ |
| 39 | Server: s.Name, Transport: transport, |
| 40 | Dir: s.Dir, Args: append([]string(nil), launchArgs...), |
| 41 | EnvKeys: sortedMapKeys(s.Env), HeaderKeys: sortedMapKeys(s.Headers), |
| 42 | LauncherDigest: s.LauncherDigest, |
| 43 | } |
| 44 | switch transport { |
| 45 | case "stdio": |
| 46 | identity.Dir = stdioWorkingDir(s) |
| 47 | if strings.TrimSpace(s.Command) == "" { |
| 48 | return mcplaunch.ProjectLaunchIdentity{}, fmt.Errorf("stdio plugin %q: command is required", s.Name) |
| 49 | } |
| 50 | env := mergeEnv(secrets.ProcessEnv(), s.Env) |
| 51 | exe, _, err := resolveStdioExecutable(ctx, s, env) |
| 52 | if err != nil { |
| 53 | return mcplaunch.ProjectLaunchIdentity{}, err |
| 54 | } |
| 55 | identity.CommandPath = exe |
| 56 | identity.CommandSHA256, err = mcplaunch.FileSHA256(exe) |
| 57 | if err != nil { |
| 58 | return mcplaunch.ProjectLaunchIdentity{}, fmt.Errorf("hash MCP executable %q: %w", exe, err) |
| 59 | } |
| 60 | case "http", "streamable-http", "streamable_http": |
| 61 | identity.Transport = "http" |
| 62 | identity.URL = normalizeIdentityURL(s.URL) |
| 63 | default: |
| 64 | identity.URL = normalizeIdentityURL(s.URL) |
| 65 | } |
| 66 | return identity, nil |
| 67 | } |
| 68 | |
| 69 | // MCPStateDir returns a stable, server-scoped host directory outside the |
| 70 | // workspace for state that must survive across calls and sessions. |
| 71 | func MCPStateDir(reasonixHome, workspace, server string) string { |
| 72 | if strings.TrimSpace(reasonixHome) == "" { |
| 73 | return "" |
| 74 | } |
| 75 | workspaceID := mcplaunch.WorkspaceFingerprint(workspace) |
| 76 | if len(workspaceID) > 16 { |
| 77 | workspaceID = workspaceID[:16] |
| 78 | } |
| 79 | if workspaceID == "" { |
| 80 | workspaceID = "global" |
| 81 | } |
| 82 | return filepath.Join(reasonixHome, "mcp-state", workspaceID, slug(server)) |
| 83 | } |
| 84 | |
| 85 | // identityURLRedacted replaces credential material inside identity and cache |
| 86 | // URLs. Only the structure survives: whether userinfo/a password exists and |
| 87 | // how many values a credential parameter carries, never their contents. |
| 88 | const identityURLRedacted = "__redacted__" |
| 89 | |
| 90 | // credentialURLQueryKeys lists query parameters whose values are credentials. |
| 91 | // Keys are compared case-insensitively after removing "-" and "_", so |
| 92 | // api_key, api-key, x-api-key, and APIKEY normalize consistently, and any |
| 93 | // normalized key ending in a credentialURLQuerySuffixes entry (auth_token, |
| 94 | // refresh_token, id_token, client_secret, sas_signature, ...) is a credential |
| 95 | // too. Non-sensitive parameters (workspace, tenant, region, resource, ...) |
| 96 | // keep their values so a resource scope change still re-triggers verification. |
| 97 | var credentialURLQueryKeys = map[string]bool{ |
| 98 | "auth": true, "authorization": true, "bearer": true, "credential": true, |
| 99 | "credentials": true, "sig": true, |
| 100 | // The key family stays an exact list: a bare "*key" suffix would also |
| 101 | // swallow unrelated words (monkey, sortkey-like resource names). |
| 102 | "key": true, "accesskey": true, "secretkey": true, "privatekey": true, |
| 103 | "authkey": true, "appkey": true, "clientkey": true, "subscriptionkey": true, |
| 104 | "sharedkey": true, |
| 105 | } |
| 106 | |
| 107 | // credentialURLQuerySuffixes classifies whole credential families by suffix: |
| 108 | // every *token, *secret, *password/*passwd, *apikey, and *signature parameter |
| 109 | // carries a credential value regardless of its prefix. |
| 110 | var credentialURLQuerySuffixes = []string{ |
| 111 | "token", "secret", "password", "passwd", "apikey", "signature", |
| 112 | } |
| 113 | |
| 114 | func credentialURLQueryKey(key string) bool { |
| 115 | normalized := strings.NewReplacer("-", "", "_", "").Replace(strings.ToLower(strings.TrimSpace(key))) |
| 116 | if credentialURLQueryKeys[normalized] { |
| 117 | return true |
| 118 | } |
| 119 | for _, suffix := range credentialURLQuerySuffixes { |
| 120 | if strings.HasSuffix(normalized, suffix) { |
| 121 | return true |
| 122 | } |
| 123 | } |
| 124 | return false |
| 125 | } |
| 126 | |
| 127 | // normalizeIdentityURL canonicalizes an MCP endpoint for host-local identity |
| 128 | // and schema-cache keys: scheme/host case and default ports fold, |
| 129 | // the fragment drops, query keys sort stably, and credential material |
| 130 | // (userinfo, credential query values) is replaced by a fixed placeholder so |
| 131 | // rotation never invalidates an exact project launch authorization. |
| 132 | // Network requests always use the raw configured URL, never this form. |
| 133 | func normalizeIdentityURL(raw string) string { |
| 134 | u, err := url.Parse(strings.TrimSpace(raw)) |
| 135 | if err != nil || u.Scheme == "" || u.Host == "" { |
| 136 | return strings.TrimSpace(raw) |
| 137 | } |
| 138 | u.Scheme = strings.ToLower(u.Scheme) |
| 139 | host := strings.ToLower(u.Hostname()) |
| 140 | port := u.Port() |
| 141 | if (u.Scheme == "https" && port == "443") || (u.Scheme == "http" && port == "80") { |
| 142 | port = "" |
| 143 | } |
| 144 | if strings.Contains(host, ":") { |
| 145 | host = "[" + host + "]" |
| 146 | } |
| 147 | if port != "" { |
| 148 | host = net.JoinHostPort(strings.Trim(host, "[]"), port) |
| 149 | } |
| 150 | u.Host = host |
| 151 | u.Fragment = "" |
| 152 | if u.User != nil { |
| 153 | if _, hasPassword := u.User.Password(); hasPassword { |
| 154 | u.User = url.UserPassword(identityURLRedacted, identityURLRedacted) |
| 155 | } else { |
| 156 | u.User = url.User(identityURLRedacted) |
| 157 | } |
| 158 | } |
| 159 | if u.RawQuery != "" { |
| 160 | query := u.Query() |
| 161 | for key, values := range query { |
| 162 | if credentialURLQueryKey(key) { |
| 163 | for i := range values { |
| 164 | values[i] = identityURLRedacted |
| 165 | } |
| 166 | } else { |
| 167 | sort.Strings(values) |
| 168 | } |
| 169 | query[key] = values |
| 170 | } |
| 171 | // Encode sorts keys, so equivalent URLs cannot differ by parameter order. |
| 172 | u.RawQuery = query.Encode() |
| 173 | } |
| 174 | return u.String() |
| 175 | } |
| 176 | |
| 177 | // legacyNormalizeIdentityURL is the pre-credential-aware normalization kept |
| 178 | // only so old schema-cache keys remain readable during the compatibility |
| 179 | // window. It no longer participates in authorization or tool classification. |
| 180 | func legacyNormalizeIdentityURL(raw string) string { |
| 181 | u, err := url.Parse(strings.TrimSpace(raw)) |
| 182 | if err != nil || u.Scheme == "" || u.Host == "" { |
| 183 | return strings.TrimSpace(raw) |
| 184 | } |
| 185 | u.Scheme = strings.ToLower(u.Scheme) |
| 186 | host := strings.ToLower(u.Hostname()) |
| 187 | port := u.Port() |
| 188 | if (u.Scheme == "https" && port == "443") || (u.Scheme == "http" && port == "80") { |
| 189 | port = "" |
| 190 | } |
| 191 | if strings.Contains(host, ":") { |
| 192 | host = "[" + host + "]" |
| 193 | } |
| 194 | if port != "" { |
| 195 | host = net.JoinHostPort(strings.Trim(host, "[]"), port) |
| 196 | } |
| 197 | u.Host = host |
| 198 | u.Fragment = "" |
| 199 | return u.String() |
| 200 | } |
| 201 | |
| 202 | func sortedMapKeys[V any](values map[string]V) []string { |
| 203 | out := make([]string, 0, len(values)) |
| 204 | for key := range values { |
| 205 | if key = strings.TrimSpace(key); key != "" { |
| 206 | out = append(out, key) |
| 207 | } |
| 208 | } |
| 209 | sort.Strings(out) |
| 210 | return out |
| 211 | } |
| 212 | |
| 213 | func launchConfigSource(s Spec) string { |
| 214 | return s.ConfigSource |
| 215 | } |
| 216 | |
| 217 | // CachedToolSafety is the local safety classification for one tool in an |
| 218 | // identity-matched schema cache. Authorization belongs to the MCP server; |
| 219 | // cached tools retain only safety facts that must match the live server. |
| 220 | type CachedToolSafety struct { |
| 221 | ReadOnly bool |
| 222 | Destructive bool |
| 223 | } |
| 224 | |
| 225 | // LiveToolSafety returns the host-local execution classification for a live MCP |
| 226 | // target. remoteTool uses one locked snapshot; compatibility adapters fall back |
| 227 | // to the public tool interfaces. The result never changes provider-visible |
| 228 | // schemas. |
| 229 | func LiveToolSafety(target tool.Tool) CachedToolSafety { |
| 230 | if target == nil { |
| 231 | return CachedToolSafety{} |
| 232 | } |
| 233 | if remote, ok := target.(*remoteTool); ok { |
| 234 | _, readOnly, destructive := remote.securitySnapshot() |
| 235 | return CachedToolSafety{ |
| 236 | ReadOnly: readOnly, |
| 237 | Destructive: destructive, |
| 238 | } |
| 239 | } |
| 240 | safety := CachedToolSafety{ReadOnly: target.ReadOnly()} |
| 241 | if annotations, ok := target.(tool.MCPAnnotations); ok { |
| 242 | safety.Destructive = annotations.MCPDestructiveHint() |
| 243 | } |
| 244 | return safety |
| 245 | } |
| 246 | |
| 247 | // ReconcileCachedToolSafety is the single cached-to-live boundary shared by |
| 248 | // lazy and on-demand MCP adapters. Both adapters stop the current call when the |
| 249 | // live server is stricter than the snapshot, before the direct tool executes. |
| 250 | func ReconcileCachedToolSafety(server, rawName string, cached CachedToolSafety, target tool.Tool) (CachedToolSafety, error) { |
| 251 | live := LiveToolSafety(target) |
| 252 | if target == nil { |
| 253 | return live, nil |
| 254 | } |
| 255 | if cached.ReadOnly && !live.ReadOnly { |
| 256 | return live, fmt.Errorf("MCP server %q no longer marks tool %q as read-only; the current call was blocked before execution — retry so Reasonix can apply the current Plan/read-only safety boundary", server, rawName) |
| 257 | } |
| 258 | if !cached.Destructive && live.Destructive { |
| 259 | return live, fmt.Errorf("MCP server %q now marks tool %q as destructive; retry so Reasonix can apply the current Plan/read-only safety boundary before execution", server, rawName) |
| 260 | } |
| 261 | return live, nil |
| 262 | } |
| 263 | |
| 264 | func CachedToolSafetyForSpec(s Spec, rawName string) (CachedToolSafety, bool) { |
| 265 | cs, ok := LoadCachedSchemaForSpec(s) |
| 266 | if !ok { |
| 267 | return CachedToolSafety{}, false |
| 268 | } |
| 269 | var target *CachedToolSafety |
| 270 | for _, cached := range cs.Tools { |
| 271 | if cached.Name == rawName { |
| 272 | copy := CachedToolSafety{ReadOnly: cached.ReadOnly, Destructive: cached.Destructive} |
| 273 | target = © |
| 274 | break |
| 275 | } |
| 276 | } |
| 277 | if target == nil { |
| 278 | return CachedToolSafety{}, false |
| 279 | } |
| 280 | return *target, true |
| 281 | } |
| 282 |