AuditLogger, SecurityEventLogger: inject TimeProvider and use
_timeProvider.GetUtcNow().UtcDateTime for occurredAt timestamps.
JwtService: inject TimeProvider; use GetUtcNow() for token IssuedAt/Expires.
DI: update JwtService factory to pass sp.GetRequiredService<TimeProvider>().
Repositories: remove ?? DateTime.UtcNow fallback in UpdateAsync since callers
always provide FechaModificacion via domain mutators.
Composes the audit emission layer per design #D-8:
SIGCM2.Infrastructure/Audit/AuditLogger.cs (IAuditLogger):
- Enriches from IAuditContext (ActorUserId/ActorRoleId/Ip/UserAgent/CorrelationId).
- Sanitizes metadata via JsonSanitizer + AuditOptions.SanitizedKeys.
- Persists via IAuditEventRepository.InsertAsync.
- Fail-closed: throws AuditContextMissingException when ActorUserId is null.
- Translates Guid.Empty correlation id to null (DB column is nullable; Empty
indicates 'no middleware ran').
- Uses System.DateTime.UtcNow for occurredAt.
SIGCM2.Infrastructure/Audit/SecurityEventLogger.cs (ISecurityEventLogger):
- NOT fail-closed: null ActorUserId is valid (login failures, anonymous
permission.denied events).
- Ip/UserAgent pulled from IAuditContext; metadata sanitized the same way.
- Persists via ISecurityEventRepository.
DI: AddScoped for both loggers in AddInfrastructure.
Tests (Strict TDD, mocks for IAuditContext/IAuditEventRepository/
ISecurityEventRepository):
- AuditLoggerTests (6): happy path with full context, fail-closed null actor,
metadata sanitization, null metadata pass-through, repo-throws-bubbles-up
(critical for TransactionScope rollback), custom SanitizedKeys from options.
- SecurityEventLoggerTests (4): login.success with context, login.failure
with null actor + attemptedUsername, metadata sanitization,
permission.denied with both actor and attemptedUsername null.
Two initial failures were fixed by replacing 'null' literal arguments in
NSubstitute Received(...) assertions with Arg.Is<T?>(x => x == null) —
NSubstitute does not always match null literals when mixed with Arg.Any<T>().
Suite: 378/378 Application.Tests + 141/141 Api.Tests = 519/519 passing.
Refs: sdd/udt-010-auditoria-trazabilidad/{spec#REQ-AUD-4 #REQ-SEC-2/3, design#D-8, tasks#B6}
Introduces persistence layer for audit and security events per design #D-6:
SIGCM2.Application/Audit/:
- IAuditEventRepository: InsertAsync + QueryAsync with cursor pagination
- ISecurityEventRepository: InsertAsync only (no query — SecurityEvent is
queried only from an admin dashboard deferred to ADM-004)
- AuditEventQueryResult: (Items, NextCursor) record
SIGCM2.Infrastructure/Audit/:
- AuditEventCursor (public): base64(OccurredAt:O|Id) opaque cursor for
DESC pagination. TryDecode is fail-open — malformed cursor returns null
and the query starts from the top.
- AuditEventRepository: Dapper INSERT via OUTPUT INSERTED.Id + dynamic
WHERE composition with parameterized filters (zero SQL injection risk).
LEFT JOIN to dbo.Usuario to populate ActorUsername in AuditEventDto.
Pagination fetches Limit+1 rows to detect "more pages"; emits cursor
from the Nth row when overflow observed.
- SecurityEventRepository: straight INSERT for login/logout/refresh/
permission.denied events.
DI: AddScoped for both repos in AddInfrastructure.
Integration tests (Strict TDD): 13 total, all against SIGCM2_Test.
- AuditEventRepositoryTests (10): insert-roundtrip, filter-by-actor,
filter-by-target, filter-by-date-range, cursor pagination across 3 pages
(no overlap/no gap), malformed-cursor fail-open, LEFT JOIN Usuario
populates username, cursor encode/decode roundtrip, cursor malformed
variants.
- SecurityEventRepositoryTests (3): insert success, insert failure with
null ActorUserId + AttemptedUsername, CK_SecurityEvent_Result rejection.
Suite: 368/368 Application.Tests + 141/141 Api.Tests = 509/509 passing.
Refs: sdd/udt-010-auditoria-trazabilidad/{spec#REQ-AUD-2,7 #REQ-SEC-1,
design#D-6, tasks#B5}
Wires the request-scoped audit context per design #D-2:
Middleware pipeline in Program.cs:
app.UseCors()
app.UseMiddleware<CorrelationIdMiddleware>() // PRE-AUTH
app.UseAuthentication()
app.UseMiddleware<AuditActorMiddleware>() // POST-AUTH
app.UseAuthorization()
app.MapControllers()
SIGCM2.Api/Middleware/CorrelationIdMiddleware.cs:
- Preserves client-sent X-Correlation-Id header when a valid GUID, otherwise
generates Guid.NewGuid(). Stores in HttpContext.Items (audit:correlationId).
- Captures Ip (Connection.RemoteIpAddress) + UserAgent header into Items.
- Echoes the correlation id back via response header (OnStarting + immediate
set — immediate set makes unit testing against DefaultHttpContext reliable).
SIGCM2.Api/Middleware/AuditActorMiddleware.cs:
- Reads JWT 'sub' claim from authenticated HttpContext.User, parses to int,
stores as audit:actorUserId. Anonymous / non-numeric sub leaves it unset.
SIGCM2.Infrastructure/Audit/AuditContext.cs (IAuditContext scoped impl):
- Reads Items entries via IHttpContextAccessor. Returns null / Guid.Empty
when no HttpContext is available (jobs, tests without middleware).
- ActorRoleId intentionally null for now — rol code → id resolution is
deferred; the logger may resolve it at persist time in a later batch.
DI registration (Infrastructure/DependencyInjection.cs):
- services.AddScoped<IAuditContext, AuditContext>()
Tests (Strict TDD):
- CorrelationIdMiddlewareTests (6): generates/preserves/handles-malformed
correlation id, sets response header, captures ip/ua, calls next.
- AuditActorMiddlewareTests (5): authenticated/anonymous/no-sub/non-numeric/
calls-next.
- AuditContextTests (7): reads from Items, null-http-context defaults,
ActorRoleId currently null.
Suite: 355/355 Application.Tests + 141/141 Api.Tests = 496/496 passing.
Refs: sdd/udt-010-auditoria-trazabilidad/{spec#REQ-AUD-3/9, design#D-2, tasks#B4}
Adds the metadata sanitization layer per #REQ-AUD-5:
SIGCM2.Infrastructure/Audit/JsonSanitizer.cs (static class):
- Sanitize(object?, IReadOnlyCollection<string>) -> string?
- Serializes via System.Text.Json + JsonNode recursive traversal.
- Strips blacklisted keys at every nesting level (objects + arrays).
- Case-insensitive match (ToLowerInvariant on both sides).
- Null input -> null output (never throws).
- Output is always valid JSON (ISJSON=1 compatible — satisfies AuditEvent CHECK).
SIGCM2.Application/Audit/AuditOptions.cs:
- Documented the IConfiguration array-binding quirk: config is ADDITIVE
(append at higher indices), not REPLACE. Intentional for security — defaults
like 'password'/'token'/'cvv' must not be silently dropped.
SIGCM2.Infrastructure/DependencyInjection.cs:
- services.Configure<AuditOptions>(configuration.GetSection(AuditOptions.SectionName))
wired in AddInfrastructure().
Tests (Strict TDD, RED -> GREEN):
- JsonSanitizerTests (10): null/empty-blacklist/flat/nested/arrays/case-insensitive/
primitives/round-trip-valid-json/string-as-value/default-keys-effective.
- AuditOptionsBindingTests (2): defaults when section absent + additive override.
One test needed adjustment during GREEN: 'AlreadySerializedJsonString' originally
asserted against an encoding-specific literal; rewrote to use JsonDocument
round-trip (validates behavior without coupling to encoder quirks).
Suite: 348/348 Application.Tests + 130/130 Api.Tests = 478/478 passing.
Refs: sdd/udt-010-auditoria-trazabilidad/{spec#REQ-AUD-5, design#D-5, tasks#B3}
JwtBearerOptions.MapInboundClaims defaulted to true, which mapped the
'sub' claim to ClaimTypes.NameIdentifier in HttpContext.User. Logout
endpoint read User.FindFirst("sub") and got null, returning 401 for
any authenticated caller.
Fix: set MapInboundClaims=false and pin NameClaimType="name" so the
JWT claims land in the principal with their original names, aligning
with how JwtService.GetPrincipalFromExpiredToken (used by refresh)
already consumes them.
Unblocks Login_Refresh_Logout_FullFlow integration test (15/15 green).
