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* Project-level configuration loader
*
* Loads configuration from .gitlab-mcp/ directory in a project repository.
* Project configs provide:
* - Scope restrictions (limit operations to specific projects)
* - Feature overrides
* - Tool selection
*
* Security notes:
* - Project configs can only RESTRICT, never expand permissions
* - No secrets in project files - auth comes from env/profiles
* - Ignored in OAuth mode (server-side)
*/
import * as fs from "fs/promises";
import * as path from "path";
import * as yaml from "yaml";
import {
ProjectConfig,
ProjectPreset,
ProjectProfile,
ProjectPresetSchema,
ProjectProfileSchema,
ProfileValidationResult,
} from "./types";
import { logger } from "../logger";
// ============================================================================
// Constants
// ============================================================================
/** Directory name for project-level configs */
export const PROJECT_CONFIG_DIR = ".gitlab-mcp";
/** Preset file name (restrictions) */
export const PROJECT_PRESET_FILE = "preset.yaml";
/** Profile file name (tool selection) */
export const PROJECT_PROFILE_FILE = "profile.yaml";
// ============================================================================
// Project Config Loader
// ============================================================================
/**
* Load project configuration from .gitlab-mcp/ directory
*
* @param repoPath Path to the repository root (directory containing .gitlab-mcp/)
* @returns ProjectConfig or null if no config exists
*/
export async function loadProjectConfig(repoPath: string): Promise<ProjectConfig | null> {
const configDir = path.join(repoPath, PROJECT_CONFIG_DIR);
// Check if .gitlab-mcp/ directory exists
try {
const stat = await fs.stat(configDir);
if (!stat.isDirectory()) {
logger.warn({ path: configDir }, "Project config path exists but is not a directory");
return null;
}
} catch {
logger.debug({ path: configDir }, "No project config directory found");
return null;
}
const config: ProjectConfig = {
configPath: configDir,
};
// Load preset.yaml (restrictions)
const presetPath = path.join(configDir, PROJECT_PRESET_FILE);
try {
const content = await fs.readFile(presetPath, "utf8");
const parsed = yaml.parse(content) as unknown;
config.preset = ProjectPresetSchema.parse(parsed);
logger.debug({ path: presetPath }, "Loaded project preset");
} catch (error) {
// File doesn't exist - that's OK
if ((error as NodeJS.ErrnoException).code !== "ENOENT") {
const message = error instanceof Error ? error.message : String(error);
logger.error({ error: message, path: presetPath }, "Failed to parse project preset");
throw new Error(`Invalid project preset at ${presetPath}: ${message}`);
}
}
// Load profile.yaml (tool selection)
const profilePath = path.join(configDir, PROJECT_PROFILE_FILE);
try {
const content = await fs.readFile(profilePath, "utf8");
const parsed = yaml.parse(content) as unknown;
config.profile = ProjectProfileSchema.parse(parsed);
logger.debug({ path: profilePath }, "Loaded project profile");
} catch (error) {
// File doesn't exist - that's OK
if ((error as NodeJS.ErrnoException).code !== "ENOENT") {
const message = error instanceof Error ? error.message : String(error);
logger.error({ error: message, path: profilePath }, "Failed to parse project profile");
throw new Error(`Invalid project profile at ${profilePath}: ${message}`);
}
}
// Return null if neither file exists
if (!config.preset && !config.profile) {
logger.debug(
{ path: configDir },
"Project config directory exists but contains no config files"
);
return null;
}
logger.info(
{
path: configDir,
hasPreset: !!config.preset,
hasProfile: !!config.profile,
},
"Loaded project configuration"
);
return config;
}
/**
* Find project config by walking up directory tree
*
* Useful when running from a subdirectory of a repository.
* Stops at filesystem root or when .git is found without .gitlab-mcp.
*
* @param startPath Starting directory path
* @returns ProjectConfig or null if not found
*/
export async function findProjectConfig(startPath: string): Promise<ProjectConfig | null> {
let currentPath = path.resolve(startPath);
const root = path.parse(currentPath).root;
while (currentPath !== root) {
// Check if .gitlab-mcp/ exists at this level
const configDir = path.join(currentPath, PROJECT_CONFIG_DIR);
try {
await fs.access(configDir);
return loadProjectConfig(currentPath);
} catch {
// Directory doesn't exist, continue searching
}
// Stop if we hit a .git directory without finding .gitlab-mcp
const gitDir = path.join(currentPath, ".git");
try {
await fs.access(gitDir);
logger.debug({ path: currentPath }, "Found .git without .gitlab-mcp, stopping search");
return null;
} catch {
// .git doesn't exist, continue up the tree
}
// Move up one directory
currentPath = path.dirname(currentPath);
}
return null;
}
/**
* Validate a project preset configuration
*/
export function validateProjectPreset(preset: ProjectPreset): ProfileValidationResult {
const errors: string[] = [];
const warnings: string[] = [];
// Validate scope configuration
// Note: Combining 'project' with 'projects' is already prevented by the Zod schema refinement
if (preset.scope) {
const { project, namespace, projects } = preset.scope;
// Warn about broad namespace scope
Eif (namespace && !project && !projects?.length) {
warnings.push(
`Scope restricts to namespace '${namespace}' - all projects in this group are allowed`
);
}
}
// Validate denied_actions format
if (preset.denied_actions) {
for (const action of preset.denied_actions) {
const colonIndex = action.indexOf(":");
if (colonIndex === -1) {
errors.push(`Invalid denied_action format '${action}', expected 'tool:action'`);
}
}
}
return {
valid: errors.length === 0,
errors,
warnings,
};
}
/**
* Validate a project profile configuration
*/
export function validateProjectProfile(
profile: ProjectProfile,
availablePresets: string[]
): ProfileValidationResult {
const errors: string[] = [];
const warnings: string[] = [];
// Validate extends references valid preset
if (profile.extends) {
if (!availablePresets.includes(profile.extends)) {
errors.push(`Unknown preset '${profile.extends}' in extends field`);
}
}
// Warn about conflicting tool settings
if (profile.additional_tools && profile.denied_tools) {
const overlap = profile.additional_tools.filter(t => profile.denied_tools?.includes(t));
if (overlap.length > 0) {
warnings.push(
`Tools appear in both additional_tools and denied_tools: ${overlap.join(", ")}`
);
}
}
return {
valid: errors.length === 0,
errors,
warnings,
};
}
/**
* Get a summary of project configuration for display
*/
export function getProjectConfigSummary(config: ProjectConfig): {
presetSummary: string | null;
profileSummary: string | null;
} {
let presetSummary: string | null = null;
let profileSummary: string | null = null;
if (config.preset) {
const parts: string[] = [];
if (config.preset.description) {
parts.push(config.preset.description);
}
if (config.preset.scope?.project) {
parts.push(`scope: ${config.preset.scope.project}`);
} else if (config.preset.scope?.namespace) {
parts.push(`scope: ${config.preset.scope.namespace}/*`);
} else if (config.preset.scope?.projects) {
parts.push(`scope: ${config.preset.scope.projects.length} projects`);
}
if (config.preset.read_only) {
parts.push("read-only");
}
if (config.preset.denied_actions?.length) {
parts.push(`${config.preset.denied_actions.length} denied actions`);
}
presetSummary = parts.join(", ") || "custom restrictions";
}
if (config.profile) {
const parts: string[] = [];
if (config.profile.description) {
parts.push(config.profile.description);
}
if (config.profile.extends) {
parts.push(`extends: ${config.profile.extends}`);
}
if (config.profile.additional_tools?.length) {
parts.push(`+${config.profile.additional_tools.length} tools`);
}
if (config.profile.denied_tools?.length) {
parts.push(`-${config.profile.denied_tools.length} tools`);
}
profileSummary = parts.join(", ") || "custom tool selection";
}
return { presetSummary, profileSummary };
}
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