98 lines
3.6 KiB
C#
98 lines
3.6 KiB
C#
using System;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Authorization;
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using Sozsoft.Mcp.Dtos;
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using Sozsoft.Mcp.Services;
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using Sozsoft.Platform.Localization;
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using Volo.Abp.Application.Services;
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namespace Sozsoft.Mcp;
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/// <summary>
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/// MCP uygulama servislerinin ortak tabani. Kullaniciya gorunen metinler platformun
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/// <c>PlatformResource</c> kaynagindan okunur; sunucu kaydini cozme ve arac kapisi her
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/// serviste ayni davranir.
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/// </summary>
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public abstract class McpAppService : ApplicationService
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{
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protected IMcpServerConfigProvider ServerConfigProvider { get; }
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protected McpAppService(IMcpServerConfigProvider serverConfigProvider)
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{
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ServerConfigProvider = serverConfigProvider;
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LocalizationResource = typeof(PlatformResource);
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}
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/// <summary>Etkin sunucu kaydinin DTO hali; kayit yoksa null.</summary>
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protected async Task<McpServerConfigDto?> ResolveServerConfigAsync()
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{
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var server = await ServerConfigProvider.GetEffectiveServerAsync();
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if (server is null)
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{
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return null;
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}
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return new McpServerConfigDto
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{
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Name = server.Name,
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Url = server.Url,
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AllowedTools = [.. ServerConfigProvider.SplitMultiValue(server.AllowedTools)],
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MaxRows = server.MaxRows,
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Description = server.Description,
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TenantName = CurrentTenant.Name
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};
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}
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/// <summary>
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/// Kapali bir araca yapilan cagriyi reddeder: sunucu kaydi yoksa, arac sunucu kaydinda kapaliysa
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/// ya da kullanicinin uygulamada karsilik gelen yetkisi yoksa. Arac listesini suzmek tek basina
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/// yeterli degildir — istemci listede olmayan bir araci da cagirabilir.
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/// </summary>
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protected async Task<McpOutcome<McpServerConfigDto>> EnsureToolAllowedAsync(string toolName)
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{
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var config = await ResolveServerConfigAsync();
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if (config is null)
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{
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return Problem(McpErrorCodes.NoServerRecord);
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}
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if (CurrentTenant.IsAvailable && !McpToolNames.TenantTools.Contains(toolName, StringComparer.Ordinal))
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{
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return Problem(McpErrorCodes.TenantToolDisabled, toolName);
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}
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if (!McpToolPolicy.IsAllowed(true, CurrentTenant.IsAvailable, config.AllowedTools, toolName))
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{
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return Problem(McpErrorCodes.ToolDisabled, toolName, config.Name);
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}
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if (McpToolNames.RequiredPermissions.TryGetValue(toolName, out var permission) &&
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await CheckPermissionAsync(toolName, permission) is { } denied)
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{
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return denied;
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}
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return config;
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}
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/// <summary>
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/// Yetkiyi adiyla ister; eksikse istemcinin rol ekraninda arayabilecegi ad ve kodla reddeder.
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/// <c>AuthorizationService.CheckAsync</c> istisna atar, bu yuzden MCP'de kullanilmaz.
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/// </summary>
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protected async Task<McpProblem?> CheckPermissionAsync(string toolName, string permission)
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=> await AuthorizationService.IsGrantedAsync(permission)
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? null
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: Problem(McpErrorCodes.PermissionDenied, toolName, McpPermissionText.Describe(L, permission));
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protected McpProblem Problem(string name, params object[] arguments)
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=> McpProblem.From(L, name, arguments);
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/// <summary>Istenen satir sayisini sunucu kaydindaki tavana kirpar.</summary>
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protected static int ResolveMaxRows(McpServerConfigDto config, int requested)
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{
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var ceiling = config.MaxRows > 0 ? config.MaxRows : McpConsts.DefaultMaxRows;
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return requested > 0 ? Math.Min(requested, ceiling) : ceiling;
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}
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}
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