| | | 1 | | using System.Security.Cryptography; |
| | | 2 | | using System.Text; |
| | | 3 | | using Microsoft.EntityFrameworkCore; |
| | | 4 | | using Microsoft.Extensions.Options; |
| | | 5 | | using OzonDomains.Models.Partners; |
| | | 6 | | using OzonRepositories.Context; |
| | | 7 | | |
| | | 8 | | namespace Services.PartnerServices; |
| | | 9 | | |
| | | 10 | | public enum PartnerLoginStatus |
| | | 11 | | { |
| | | 12 | | Success, |
| | | 13 | | InvalidCredentials, |
| | | 14 | | Locked, |
| | | 15 | | Disabled |
| | | 16 | | } |
| | | 17 | | |
| | | 18 | | public sealed record PartnerLoginResult(PartnerLoginStatus Status, Partner? Partner, DateTime? LockedUntilUtc = null); |
| | | 19 | | |
| | | 20 | | public enum PartnerCodeRequestStatus |
| | | 21 | | { |
| | | 22 | | /// <summary>Код выпущен и письмо принято SMTP.</summary> |
| | | 23 | | Sent, |
| | | 24 | | |
| | | 25 | | /// <summary>Такой почты нет или партнёр отключён: письмо не уходило.</summary> |
| | | 26 | | NotSent, |
| | | 27 | | |
| | | 28 | | /// <summary>Предыдущий код выпущен меньше минуты назад.</summary> |
| | | 29 | | Throttled, |
| | | 30 | | |
| | | 31 | | /// <summary>Вход заблокирован после неверных кодов.</summary> |
| | | 32 | | Locked, |
| | | 33 | | |
| | | 34 | | /// <summary>Код выпущен, но письмо отправить не удалось.</summary> |
| | | 35 | | MailFailed |
| | | 36 | | } |
| | | 37 | | |
| | 31 | 38 | | public sealed record PartnerCodeRequestResult(PartnerCodeRequestStatus Status, int RetryAfterSeconds = 0, DateTime? Lock |
| | | 39 | | |
| | | 40 | | public interface IPartnerAuthService |
| | | 41 | | { |
| | | 42 | | /// <summary>Название организации по точной почте активного партнёра, иначе null.</summary> |
| | | 43 | | Task<string?> LookupNameByEmailAsync(string email, CancellationToken ct = default); |
| | | 44 | | |
| | | 45 | | /// <summary>Выпускает код входа и отправляет его на почту партнёра.</summary> |
| | | 46 | | Task<PartnerCodeRequestResult> RequestCodeAsync(string email, string? ip, CancellationToken ct = default); |
| | | 47 | | |
| | | 48 | | /// <summary>Вход по коду из письма (код входа или код из приглашения).</summary> |
| | | 49 | | Task<PartnerLoginResult> SignInWithCodeAsync(string email, string code, string? ip, CancellationToken ct = default); |
| | | 50 | | |
| | | 51 | | /// <summary>Отправляет партнёру приглашение со ссылкой и готовым кодом. Прежние приглашения перестают действовать.< |
| | | 52 | | Task<PartnerOpResult<bool>> SendInviteAsync(long partnerId, string ownerId, CancellationToken ct = default); |
| | | 53 | | |
| | | 54 | | /// <summary>Вход через Google: пускает только партнёра, у которого эта почта заведена владельцем.</summary> |
| | | 55 | | Task<PartnerLoginResult> SignInWithGoogleAsync(string email, string? ip, CancellationToken ct = default); |
| | | 56 | | |
| | | 57 | | /// <summary>Актуальный партнёр для проверки сессии: null, если удалён, отключён или сменился SecurityStamp.</summar |
| | | 58 | | Task<Partner?> ValidateSessionAsync(long partnerId, string securityStamp, CancellationToken ct = default); |
| | | 59 | | } |
| | | 60 | | |
| | | 61 | | public sealed class PartnerAuthService( |
| | | 62 | | ApplicationDbContext db, |
| | | 63 | | IPartnerAuditService audit, |
| | | 64 | | IPartnerLoginMailer mailer, |
| | | 65 | | IOptions<PartnerOfficeOptions> options) : IPartnerAuthService |
| | | 66 | | { |
| | | 67 | | internal const int MaxFailedAttempts = 5; |
| | | 68 | | internal const int MaxCodeAttempts = 5; |
| | | 69 | | internal const int CodeLength = 6; |
| | | 70 | | internal static readonly TimeSpan LockoutDuration = TimeSpan.FromMinutes(15); |
| | | 71 | | internal static readonly TimeSpan LoginCodeLifetime = TimeSpan.FromMinutes(10); |
| | | 72 | | internal static readonly TimeSpan InviteLifetime = TimeSpan.FromDays(7); |
| | | 73 | | internal static readonly TimeSpan ResendPause = TimeSpan.FromSeconds(60); |
| | | 74 | | |
| | | 75 | | public async Task<string?> LookupNameByEmailAsync(string email, CancellationToken ct = default) |
| | | 76 | | { |
| | | 77 | | var normalized = PartnerEmail.Normalize(email); |
| | | 78 | | if (!PartnerEmail.IsValid(normalized)) return null; |
| | | 79 | | |
| | | 80 | | return await db.Partners.AsNoTracking() |
| | | 81 | | .Where(x => x.Email == normalized && x.IsActive) |
| | | 82 | | .Select(x => x.Name) |
| | | 83 | | .FirstOrDefaultAsync(ct); |
| | | 84 | | } |
| | | 85 | | |
| | | 86 | | public async Task<PartnerCodeRequestResult> RequestCodeAsync(string email, string? ip, CancellationToken ct = defaul |
| | | 87 | | { |
| | | 88 | | var normalized = PartnerEmail.Normalize(email); |
| | | 89 | | var partner = PartnerEmail.IsValid(normalized) |
| | | 90 | | ? await db.Partners.FirstOrDefaultAsync(x => x.Email == normalized, ct) |
| | | 91 | | : null; |
| | | 92 | | |
| | | 93 | | if (partner is null || !partner.IsActive) |
| | | 94 | | { |
| | | 95 | | await audit.WriteAsync("code_request_failed", PartnerActorKind.Partner, normalized, partner?.Id, false, |
| | | 96 | | partner is null ? "Почта не заведена" : "Партнёр отключён", ipAddress: ip, ct: ct); |
| | | 97 | | return new PartnerCodeRequestResult(PartnerCodeRequestStatus.NotSent); |
| | | 98 | | } |
| | | 99 | | |
| | | 100 | | var now = DateTime.UtcNow; |
| | | 101 | | if (partner.LockoutUntilUtc is { } until && until > now) |
| | | 102 | | return new PartnerCodeRequestResult(PartnerCodeRequestStatus.Locked, LockedUntilUtc: until); |
| | | 103 | | |
| | | 104 | | var lastIssuedAt = await db.PartnerLoginCodes |
| | | 105 | | .Where(x => x.PartnerId == partner.Id && x.Kind == PartnerLoginCodeKind.Login) |
| | | 106 | | .OrderByDescending(x => x.CreatedAtUtc) |
| | | 107 | | .Select(x => (DateTime?)x.CreatedAtUtc) |
| | | 108 | | .FirstOrDefaultAsync(ct); |
| | | 109 | | if (lastIssuedAt is { } last && now - last < ResendPause) |
| | | 110 | | { |
| | | 111 | | var wait = (int)Math.Ceiling((ResendPause - (now - last)).TotalSeconds); |
| | | 112 | | return new PartnerCodeRequestResult(PartnerCodeRequestStatus.Throttled, wait); |
| | | 113 | | } |
| | | 114 | | |
| | | 115 | | var code = await IssueCodeAsync(partner, PartnerLoginCodeKind.Login, LoginCodeLifetime, ip, ct); |
| | | 116 | | var sent = await mailer.SendLoginCodeAsync(partner.Email!, partner.Name, code, ct); |
| | | 117 | | await audit.WriteAsync("code_requested", PartnerActorKind.Partner, partner.Email!, partner.Id, sent, |
| | | 118 | | sent ? "Код отправлен на почту" : "Письмо с кодом не отправлено", ipAddress: ip, ct: ct); |
| | | 119 | | return new PartnerCodeRequestResult(sent ? PartnerCodeRequestStatus.Sent : PartnerCodeRequestStatus.MailFailed); |
| | | 120 | | } |
| | | 121 | | |
| | | 122 | | public async Task<PartnerLoginResult> SignInWithCodeAsync( |
| | | 123 | | string email, string code, string? ip, CancellationToken ct = default) |
| | | 124 | | { |
| | | 125 | | var normalized = PartnerEmail.Normalize(email); |
| | | 126 | | var partner = PartnerEmail.IsValid(normalized) |
| | | 127 | | ? await db.Partners.FirstOrDefaultAsync(x => x.Email == normalized, ct) |
| | | 128 | | : null; |
| | | 129 | | |
| | | 130 | | if (partner is null) |
| | | 131 | | { |
| | | 132 | | await audit.WriteAsync("login_failed", PartnerActorKind.Partner, normalized, null, false, |
| | | 133 | | "Почта не заведена", ipAddress: ip, ct: ct); |
| | | 134 | | return new PartnerLoginResult(PartnerLoginStatus.InvalidCredentials, null); |
| | | 135 | | } |
| | | 136 | | |
| | | 137 | | if (!partner.IsActive) |
| | | 138 | | { |
| | | 139 | | await audit.WriteAsync("login_failed", PartnerActorKind.Partner, partner.Email!, partner.Id, false, |
| | | 140 | | "Партнёр отключён", ipAddress: ip, ct: ct); |
| | | 141 | | return new PartnerLoginResult(PartnerLoginStatus.Disabled, null); |
| | | 142 | | } |
| | | 143 | | |
| | | 144 | | var now = DateTime.UtcNow; |
| | | 145 | | if (partner.LockoutUntilUtc is { } until && until > now) |
| | | 146 | | { |
| | | 147 | | await audit.WriteAsync("login_failed", PartnerActorKind.Partner, partner.Email!, partner.Id, false, |
| | | 148 | | "Вход заблокирован после неверных кодов", ipAddress: ip, ct: ct); |
| | | 149 | | return new PartnerLoginResult(PartnerLoginStatus.Locked, null, until); |
| | | 150 | | } |
| | | 151 | | |
| | | 152 | | var digits = new string((code ?? string.Empty).Where(char.IsDigit).ToArray()); |
| | | 153 | | var active = await db.PartnerLoginCodes |
| | | 154 | | .Where(x => x.PartnerId == partner.Id && x.ConsumedAtUtc == null && x.ExpiresAtUtc > now && x.Attempts < Max |
| | | 155 | | .ToListAsync(ct); |
| | | 156 | | |
| | | 157 | | // Сверяем со всеми активными кодами без раннего выхода: время ответа не зависит от того, какой код подошёл. |
| | | 158 | | var matched = false; |
| | | 159 | | if (digits.Length == CodeLength) |
| | | 160 | | { |
| | | 161 | | foreach (var candidate in active) |
| | | 162 | | matched |= VerifyHash(candidate.CodeHash, digits); |
| | | 163 | | } |
| | | 164 | | |
| | | 165 | | if (matched) |
| | | 166 | | { |
| | | 167 | | foreach (var candidate in active) candidate.ConsumedAtUtc = now; |
| | | 168 | | await CompleteLoginAsync(partner, "email_code", ip, ct); |
| | | 169 | | return new PartnerLoginResult(PartnerLoginStatus.Success, partner); |
| | | 170 | | } |
| | | 171 | | |
| | | 172 | | foreach (var candidate in active) candidate.Attempts++; |
| | | 173 | | partner.FailedLoginCount++; |
| | | 174 | | DateTime? lockedUntil = null; |
| | | 175 | | if (partner.FailedLoginCount >= MaxFailedAttempts) |
| | | 176 | | { |
| | | 177 | | lockedUntil = now.Add(LockoutDuration); |
| | | 178 | | partner.LockoutUntilUtc = lockedUntil; |
| | | 179 | | partner.FailedLoginCount = 0; |
| | | 180 | | // После блокировки прежние коды не годятся: нужен новый запрос. |
| | | 181 | | foreach (var candidate in active) candidate.ConsumedAtUtc = now; |
| | | 182 | | } |
| | | 183 | | |
| | | 184 | | await db.SaveChangesAsync(ct); |
| | | 185 | | await audit.WriteAsync("login_failed", PartnerActorKind.Partner, partner.Email!, partner.Id, false, |
| | | 186 | | lockedUntil is null ? "Неверный или просроченный код" : "Неверный код, вход заблокирован", ipAddress: ip, ct |
| | | 187 | | return lockedUntil is null |
| | | 188 | | ? new PartnerLoginResult(PartnerLoginStatus.InvalidCredentials, null) |
| | | 189 | | : new PartnerLoginResult(PartnerLoginStatus.Locked, null, lockedUntil); |
| | | 190 | | } |
| | | 191 | | |
| | | 192 | | public async Task<PartnerOpResult<bool>> SendInviteAsync(long partnerId, string ownerId, CancellationToken ct = defa |
| | | 193 | | { |
| | | 194 | | var partner = await db.Partners.FirstOrDefaultAsync(x => x.Id == partnerId, ct); |
| | | 195 | | if (partner is null) return PartnerOpResult<bool>.Fail("Партнёр не найден."); |
| | | 196 | | if (string.IsNullOrEmpty(partner.Email)) return PartnerOpResult<bool>.Fail("У партнёра не указана почта."); |
| | | 197 | | if (!partner.IsActive) return PartnerOpResult<bool>.Fail("Партнёр отключён: сначала включите его."); |
| | | 198 | | |
| | | 199 | | var hadInvite = await db.PartnerLoginCodes |
| | | 200 | | .AnyAsync(x => x.PartnerId == partnerId && x.Kind == PartnerLoginCodeKind.Invite, ct); |
| | | 201 | | |
| | | 202 | | // IssueCodeAsync гасит прежние неиспользованные приглашения. |
| | | 203 | | var code = await IssueCodeAsync(partner, PartnerLoginCodeKind.Invite, InviteLifetime, null, ct); |
| | | 204 | | var link = BuildInviteLink(partner.Email, code); |
| | | 205 | | var sent = await mailer.SendInviteAsync(partner.Email, partner.Name, code, link, ct); |
| | | 206 | | |
| | | 207 | | await audit.WriteAsync(hadInvite ? "invite_resent" : "invite_sent", PartnerActorKind.Owner, ownerId, partner.Id, |
| | | 208 | | sent ? $"Приглашение отправлено на {partner.Email}" : $"Письмо на {partner.Email} не отправлено", ct: ct); |
| | | 209 | | return sent |
| | | 210 | | ? PartnerOpResult<bool>.Success(true) |
| | | 211 | | : PartnerOpResult<bool>.Fail("Не удалось отправить письмо. Проверьте настройки SMTP и повторите отправку."); |
| | | 212 | | } |
| | | 213 | | |
| | | 214 | | public async Task<PartnerLoginResult> SignInWithGoogleAsync(string email, string? ip, CancellationToken ct = default |
| | | 215 | | { |
| | | 216 | | var normalized = (email ?? string.Empty).Trim().ToLowerInvariant(); |
| | | 217 | | var partner = string.IsNullOrEmpty(normalized) |
| | | 218 | | ? null |
| | | 219 | | : await db.Partners.FirstOrDefaultAsync(x => x.GoogleEmail == normalized, ct); |
| | | 220 | | |
| | | 221 | | if (partner is null) |
| | | 222 | | { |
| | | 223 | | await audit.WriteAsync("login_failed", PartnerActorKind.Partner, normalized, null, false, |
| | | 224 | | "Google-почта не заведена", ipAddress: ip, ct: ct); |
| | | 225 | | return new PartnerLoginResult(PartnerLoginStatus.InvalidCredentials, null); |
| | | 226 | | } |
| | | 227 | | |
| | | 228 | | if (!partner.IsActive) |
| | | 229 | | { |
| | | 230 | | await audit.WriteAsync("login_failed", PartnerActorKind.Partner, partner.Login, partner.Id, false, |
| | | 231 | | "Партнёр отключён", ipAddress: ip, ct: ct); |
| | | 232 | | return new PartnerLoginResult(PartnerLoginStatus.Disabled, null); |
| | | 233 | | } |
| | | 234 | | |
| | | 235 | | await CompleteLoginAsync(partner, "google", ip, ct); |
| | | 236 | | return new PartnerLoginResult(PartnerLoginStatus.Success, partner); |
| | | 237 | | } |
| | | 238 | | |
| | | 239 | | public async Task<Partner?> ValidateSessionAsync(long partnerId, string securityStamp, CancellationToken ct = defaul |
| | | 240 | | { |
| | | 241 | | var partner = await db.Partners.AsNoTracking().FirstOrDefaultAsync(x => x.Id == partnerId, ct); |
| | | 242 | | return partner is { IsActive: true } && partner.SecurityStamp == securityStamp ? partner : null; |
| | | 243 | | } |
| | | 244 | | |
| | | 245 | | private string BuildInviteLink(string email, string code) => |
| | | 246 | | $"{options.Value.PublicUrl.TrimEnd('/')}/login?email={Uri.EscapeDataString(email)}&code={code}"; |
| | | 247 | | |
| | | 248 | | /// <summary>Создаёт код, гасит прежние неиспользованные коды того же вида и возвращает код в открытом виде (для пис |
| | | 249 | | private async Task<string> IssueCodeAsync( |
| | | 250 | | Partner partner, PartnerLoginCodeKind kind, TimeSpan lifetime, string? ip, CancellationToken ct) |
| | | 251 | | { |
| | | 252 | | var now = DateTime.UtcNow; |
| | | 253 | | var open = await db.PartnerLoginCodes |
| | | 254 | | .Where(x => x.PartnerId == partner.Id && x.Kind == kind && x.ConsumedAtUtc == null) |
| | | 255 | | .ToListAsync(ct); |
| | | 256 | | foreach (var old in open) old.ConsumedAtUtc = now; |
| | | 257 | | |
| | | 258 | | var code = RandomNumberGenerator.GetInt32(0, 1_000_000).ToString("D6"); |
| | | 259 | | db.PartnerLoginCodes.Add(new PartnerLoginCode |
| | | 260 | | { |
| | | 261 | | PartnerId = partner.Id, |
| | | 262 | | CodeHash = HashCode(code), |
| | | 263 | | Kind = kind, |
| | | 264 | | CreatedAtUtc = now, |
| | | 265 | | ExpiresAtUtc = now.Add(lifetime), |
| | | 266 | | RequestIp = ip is { Length: > 64 } ? ip[..64] : ip |
| | | 267 | | }); |
| | | 268 | | await db.SaveChangesAsync(ct); |
| | | 269 | | return code; |
| | | 270 | | } |
| | | 271 | | |
| | | 272 | | private static string HashCode(string code) |
| | | 273 | | { |
| | | 274 | | var salt = RandomNumberGenerator.GetBytes(16); |
| | | 275 | | var hash = HMACSHA256.HashData(salt, Encoding.UTF8.GetBytes(code)); |
| | | 276 | | return $"{Convert.ToBase64String(salt)}.{Convert.ToBase64String(hash)}"; |
| | | 277 | | } |
| | | 278 | | |
| | | 279 | | private static bool VerifyHash(string stored, string code) |
| | | 280 | | { |
| | | 281 | | var parts = stored.Split('.'); |
| | | 282 | | if (parts.Length != 2) return false; |
| | | 283 | | try |
| | | 284 | | { |
| | | 285 | | var salt = Convert.FromBase64String(parts[0]); |
| | | 286 | | var expected = Convert.FromBase64String(parts[1]); |
| | | 287 | | var actual = HMACSHA256.HashData(salt, Encoding.UTF8.GetBytes(code)); |
| | | 288 | | return CryptographicOperations.FixedTimeEquals(expected, actual); |
| | | 289 | | } |
| | | 290 | | catch (FormatException) |
| | | 291 | | { |
| | | 292 | | return false; |
| | | 293 | | } |
| | | 294 | | } |
| | | 295 | | |
| | | 296 | | private async Task CompleteLoginAsync(Partner partner, string method, string? ip, CancellationToken ct) |
| | | 297 | | { |
| | | 298 | | partner.FailedLoginCount = 0; |
| | | 299 | | partner.LockoutUntilUtc = null; |
| | | 300 | | partner.LastLoginAtUtc = DateTime.UtcNow; |
| | | 301 | | await db.SaveChangesAsync(ct); |
| | | 302 | | await audit.WriteAsync("login", PartnerActorKind.Partner, partner.Email ?? partner.Login, partner.Id, true, |
| | | 303 | | $"Вход: {method}", ipAddress: ip, ct: ct); |
| | | 304 | | } |
| | | 305 | | } |
| | | 306 | | |
| | | 307 | | public static class PartnerLogin |
| | | 308 | | { |
| | | 309 | | public static string Normalize(string? login) => (login ?? string.Empty).Trim().ToLowerInvariant(); |
| | | 310 | | } |