示例#1
0
        public virtual async Task <ActionResult> DeletePackage(string id, string version)
        {
            var package = PackageService.FindPackageByIdAndVersionStrict(id, version);

            if (package == null)
            {
                return(new HttpStatusCodeWithBodyResult(
                           HttpStatusCode.NotFound, String.Format(CultureInfo.CurrentCulture, Strings.PackageWithIdAndVersionNotFound, id, version)));
            }

            // Check if the current user's scopes allow listing/unlisting the current package ID
            var apiScopeEvaluationResult = EvaluateApiScope(ActionsRequiringPermissions.UnlistOrRelistPackage, package.PackageRegistration, NuGetScopes.PackageUnlist);

            if (!apiScopeEvaluationResult.IsSuccessful())
            {
                return(GetHttpResultFromFailedApiScopeEvaluation(apiScopeEvaluationResult, id, version));
            }

            if (package.PackageRegistration.IsLocked)
            {
                return(new HttpStatusCodeWithBodyResult(
                           HttpStatusCode.Forbidden,
                           string.Format(CultureInfo.CurrentCulture, Strings.PackageIsLocked, package.PackageRegistration.Id)));
            }

            await PackageService.MarkPackageUnlistedAsync(package);

            IndexingService.UpdatePackage(package);
            return(new EmptyResult());
        }
        public virtual async Task <ActionResult> PublishPackage(string id, string version)
        {
            var package = PackageService.FindPackageByIdAndVersionStrict(id, version);

            if (package == null)
            {
                return(new HttpStatusCodeWithBodyResult(
                           HttpStatusCode.NotFound, String.Format(CultureInfo.CurrentCulture, Strings.PackageWithIdAndVersionNotFound, id, version)));
            }

            // Check if API key allows listing/unlisting the current package id
            User user = GetCurrentUser();

            if (!HasAnyScopeThatAllows(package.PackageRegistration, NuGetScopes.PackageUnlist))
            {
                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Forbidden, Strings.ApiKeyNotAuthorized));
            }

            if (package.PackageRegistration.IsLocked)
            {
                return(new HttpStatusCodeWithBodyResult(
                           HttpStatusCode.Forbidden,
                           string.Format(CultureInfo.CurrentCulture, Strings.PackageIsLocked, package.PackageRegistration.Id)));
            }

            await PackageService.MarkPackageListedAsync(package);

            IndexingService.UpdatePackage(package);
            return(new EmptyResult());
        }
        public virtual async Task <ActionResult> PublishPackage(string id, string version)
        {
            var package = PackageService.FindPackageByIdAndVersionStrict(id, version);

            if (package == null)
            {
                return(new HttpStatusCodeWithBodyResult(
                           HttpStatusCode.NotFound, String.Format(CultureInfo.CurrentCulture, Strings.PackageWithIdAndVersionNotFound, id, version)));
            }

            User user = GetCurrentUser();

            if (!package.IsOwner(user))
            {
                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Forbidden, String.Format(CultureInfo.CurrentCulture, Strings.ApiKeyNotAuthorized, "publish")));
            }

            // Check if API key allows listing/unlisting the current package id
            if (!ApiKeyScopeAllows(
                    subject: id,
                    requestedActions: NuGetScopes.PackageUnlist))
            {
                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Forbidden, Strings.ApiKeyNotAuthorized));
            }

            await PackageService.MarkPackageListedAsync(package);

            IndexingService.UpdatePackage(package);
            return(new EmptyResult());
        }
示例#4
0
        private async Task <ActionResult> CreatePackageInternal()
        {
            // Get the user
            var user = GetCurrentUser();

            using (var packageToPush = ReadPackageFromRequest())
            {
                if (packageToPush.Metadata.MinClientVersion > new Version("3.0.0.0"))
                {
                    return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, String.Format(
                                                                CultureInfo.CurrentCulture,
                                                                Strings.UploadPackage_MinClientVersionOutOfRange,
                                                                packageToPush.Metadata.MinClientVersion)));
                }

                // Ensure that the user can push packages for this partialId.
                var packageRegistration = PackageService.FindPackageRegistrationById(packageToPush.Metadata.Id);
                if (packageRegistration != null)
                {
                    if (!packageRegistration.IsOwner(user))
                    {
                        return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Forbidden, Strings.ApiKeyNotAuthorized));
                    }

                    // Check if a particular Id-Version combination already exists. We eventually need to remove this check.
                    string normalizedVersion = packageToPush.Metadata.Version.ToNormalizedString();
                    bool   packageExists     =
                        packageRegistration.Packages.Any(
                            p => String.Equals(
                                p.NormalizedVersion,
                                normalizedVersion,
                                StringComparison.OrdinalIgnoreCase));

                    if (packageExists)
                    {
                        return(new HttpStatusCodeWithBodyResult(
                                   HttpStatusCode.Conflict,
                                   String.Format(CultureInfo.CurrentCulture, Strings.PackageExistsAndCannotBeModified,
                                                 packageToPush.Metadata.Id, packageToPush.Metadata.Version.ToNormalizedStringSafe())));
                    }
                }

                var package = PackageService.CreatePackage(packageToPush, user, commitChanges: false);
                AutoCuratePackage.Execute(package, packageToPush, commitChanges: false);
                EntitiesContext.SaveChanges();

                using (Stream uploadStream = packageToPush.GetStream())
                {
                    await PackageFileService.SavePackageFileAsync(package, uploadStream);

                    IndexingService.UpdatePackage(package);
                }
            }

            return(new HttpStatusCodeResult(HttpStatusCode.Created));
        }
        public virtual ActionResult PublishPackage(string id, string version)
        {
            var package = PackageService.FindPackageByIdAndVersion(id, version);

            if (package == null)
            {
                return(new HttpStatusCodeWithBodyResult(
                           HttpStatusCode.NotFound, String.Format(CultureInfo.CurrentCulture, Strings.PackageWithIdAndVersionNotFound, id, version)));
            }

            User user = GetCurrentUser();

            if (!package.IsOwner(user))
            {
                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Forbidden, String.Format(CultureInfo.CurrentCulture, Strings.ApiKeyNotAuthorized, "publish")));
            }

            PackageService.MarkPackageListed(package);
            IndexingService.UpdatePackage(package);
            return(new EmptyResult());
        }
        public virtual async Task <ActionResult> DeletePackage(string id, string version)
        {
            var package = PackageService.FindPackageByIdAndVersion(id, version);

            if (package == null)
            {
                return(new HttpStatusCodeWithBodyResult(
                           HttpStatusCode.NotFound, String.Format(CultureInfo.CurrentCulture, Strings.PackageWithIdAndVersionNotFound, id, version)));
            }

            var user = GetCurrentUser();

            if (!package.IsOwner(user))
            {
                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Forbidden, Strings.ApiKeyNotAuthorized));
            }

            // Check if API key allows listing/unlisting the current package id
            if (!ApiKeyScopeAllows(
                    subject: id,
                    requestedActions: NuGetScopes.PackageUnlist))
            {
                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Forbidden, Strings.ApiKeyNotAuthorized));
            }

            await PackageService.MarkPackageUnlistedAsync(package);

            // Handle in separate transaction because of concurrency check with retry. Due to using
            // separate transactions, we must always call UpdateIsLatest on delete/unlist. This is
            // because a concurrent thread could be marking the package as latest before this thread
            // is able to commit the delete /unlist.
            await PackageService.UpdateIsLatestAsync(package.PackageRegistration);

            IndexingService.UpdatePackage(package);
            return(new EmptyResult());
        }
示例#7
0
        private async Task <ActionResult> CreatePackageInternal()
        {
            var policyResult = await SecurityPolicyService.EvaluateAsync(SecurityPolicyAction.PackagePush, HttpContext);

            if (!policyResult.Success)
            {
                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, policyResult.ErrorMessage));
            }

            // Get the user
            var currentUser = GetCurrentUser();

            using (var packageStream = ReadPackageFromRequest())
            {
                try
                {
                    using (var archive = new ZipArchive(packageStream, ZipArchiveMode.Read, leaveOpen: true))
                    {
                        var reference = DateTime.UtcNow.AddDays(1); // allow "some" clock skew

                        var entryInTheFuture = archive.Entries.FirstOrDefault(
                            e => e.LastWriteTime.UtcDateTime > reference);

                        if (entryInTheFuture != null)
                        {
                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, string.Format(
                                                                        CultureInfo.CurrentCulture,
                                                                        Strings.PackageEntryFromTheFuture,
                                                                        entryInTheFuture.Name)));
                        }
                    }

                    using (var packageToPush = new PackageArchiveReader(packageStream, leaveStreamOpen: false))
                    {
                        try
                        {
                            PackageService.EnsureValid(packageToPush);
                        }
                        catch (Exception ex)
                        {
                            ex.Log();

                            var message = Strings.FailedToReadUploadFile;
                            if (ex is InvalidPackageException || ex is InvalidDataException || ex is EntityException)
                            {
                                message = ex.Message;
                            }

                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, message));
                        }

                        NuspecReader nuspec;
                        var          errors = ManifestValidator.Validate(packageToPush.GetNuspec(), out nuspec).ToArray();
                        if (errors.Length > 0)
                        {
                            var errorsString = string.Join("', '", errors.Select(error => error.ErrorMessage));
                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, string.Format(
                                                                        CultureInfo.CurrentCulture,
                                                                        errors.Length > 1 ? Strings.UploadPackage_InvalidNuspecMultiple : Strings.UploadPackage_InvalidNuspec,
                                                                        errorsString)));
                        }

                        if (nuspec.GetMinClientVersion() > Constants.MaxSupportedMinClientVersion)
                        {
                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, string.Format(
                                                                        CultureInfo.CurrentCulture,
                                                                        Strings.UploadPackage_MinClientVersionOutOfRange,
                                                                        nuspec.GetMinClientVersion())));
                        }

                        User owner;

                        // Ensure that the user can push packages for this partialId.
                        var id                  = nuspec.GetId();
                        var version             = nuspec.GetVersion();
                        var packageRegistration = PackageService.FindPackageRegistrationById(id);
                        if (packageRegistration == null)
                        {
                            // Check if the current user's scopes allow pushing a new package ID
                            var apiScopeEvaluationResult = EvaluateApiScope(ActionsRequiringPermissions.UploadNewPackageId, new ActionOnNewPackageContext(id, ReservedNamespaceService), NuGetScopes.PackagePush);
                            owner = apiScopeEvaluationResult.Owner;
                            if (!apiScopeEvaluationResult.IsSuccessful())
                            {
                                // User cannot push a new package ID as the current user's scopes does not allow it
                                return(GetHttpResultFromFailedApiScopeEvaluationForPush(apiScopeEvaluationResult, id, version));
                            }
                        }
                        else
                        {
                            // Check if the current user's scopes allow pushing a new version of an existing package ID
                            var apiScopeEvaluationResult = EvaluateApiScope(ActionsRequiringPermissions.UploadNewPackageVersion, packageRegistration, NuGetScopes.PackagePushVersion, NuGetScopes.PackagePush);
                            owner = apiScopeEvaluationResult.Owner;
                            if (!apiScopeEvaluationResult.IsSuccessful())
                            {
                                // User cannot push a package as the current user's scopes does not allow it
                                await AuditingService.SaveAuditRecordAsync(
                                    new FailedAuthenticatedOperationAuditRecord(
                                        currentUser.Username,
                                        AuditedAuthenticatedOperationAction.PackagePushAttemptByNonOwner,
                                        attemptedPackage : new AuditedPackageIdentifier(
                                            id, version.ToNormalizedStringSafe())));

                                return(GetHttpResultFromFailedApiScopeEvaluationForPush(apiScopeEvaluationResult, id, version));
                            }

                            if (packageRegistration.IsLocked)
                            {
                                return(new HttpStatusCodeWithBodyResult(
                                           HttpStatusCode.Forbidden,
                                           string.Format(CultureInfo.CurrentCulture, Strings.PackageIsLocked, packageRegistration.Id)));
                            }

                            // Check if a particular Id-Version combination already exists. We eventually need to remove this check.
                            string normalizedVersion = version.ToNormalizedString();
                            bool   packageExists     =
                                packageRegistration.Packages.Any(
                                    p => string.Equals(
                                        p.NormalizedVersion,
                                        normalizedVersion,
                                        StringComparison.OrdinalIgnoreCase));

                            if (packageExists)
                            {
                                return(new HttpStatusCodeWithBodyResult(
                                           HttpStatusCode.Conflict,
                                           string.Format(CultureInfo.CurrentCulture, Strings.PackageExistsAndCannotBeModified,
                                                         id, nuspec.GetVersion().ToNormalizedStringSafe())));
                            }
                        }

                        var packageStreamMetadata = new PackageStreamMetadata
                        {
                            HashAlgorithm = Constants.Sha512HashAlgorithmId,
                            Hash          = CryptographyService.GenerateHash(packageStream.AsSeekableStream()),
                            Size          = packageStream.Length
                        };

                        var package = await PackageUploadService.GeneratePackageAsync(
                            id,
                            packageToPush,
                            packageStreamMetadata,
                            owner,
                            currentUser);

                        await AutoCuratePackage.ExecuteAsync(package, packageToPush, commitChanges : false);

                        PackageCommitResult commitResult;
                        using (Stream uploadStream = packageStream)
                        {
                            uploadStream.Position = 0;
                            commitResult          = await PackageUploadService.CommitPackageAsync(
                                package,
                                uploadStream.AsSeekableStream());
                        }

                        switch (commitResult)
                        {
                        case PackageCommitResult.Success:
                            break;

                        case PackageCommitResult.Conflict:
                            return(new HttpStatusCodeWithBodyResult(
                                       HttpStatusCode.Conflict,
                                       Strings.UploadPackage_IdVersionConflict));

                        default:
                            throw new NotImplementedException($"The package commit result {commitResult} is not supported.");
                        }

                        IndexingService.UpdatePackage(package);

                        // Write an audit record
                        await AuditingService.SaveAuditRecordAsync(
                            new PackageAuditRecord(package, AuditedPackageAction.Create, PackageCreatedVia.Api));

                        if (!(ConfigurationService.Current.AsynchronousPackageValidationEnabled && ConfigurationService.Current.BlockingAsynchronousPackageValidationEnabled))
                        {
                            // Notify user of push unless async validation in blocking mode is used
                            MessageService.SendPackageAddedNotice(package,
                                                                  Url.Package(package.PackageRegistration.Id, package.NormalizedVersion, relativeUrl: false),
                                                                  Url.ReportPackage(package.PackageRegistration.Id, package.NormalizedVersion, relativeUrl: false),
                                                                  Url.AccountSettings(relativeUrl: false));
                        }

                        TelemetryService.TrackPackagePushEvent(package, currentUser, User.Identity);

                        if (package.SemVerLevelKey == SemVerLevelKey.SemVer2)
                        {
                            return(new HttpStatusCodeWithServerWarningResult(HttpStatusCode.Created, Strings.WarningSemVer2PackagePushed));
                        }

                        return(new HttpStatusCodeResult(HttpStatusCode.Created));
                    }
                }
                catch (InvalidPackageException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
                catch (InvalidDataException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
                catch (EntityException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
                catch (FrameworkException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
            }
        }
示例#8
0
        private async Task <ActionResult> CreatePackageInternal()
        {
            // Get the user
            var user = GetCurrentUser();

            using (var packageStream = ReadPackageFromRequest())
            {
                try
                {
                    using (var archive = new ZipArchive(packageStream, ZipArchiveMode.Read, leaveOpen: true))
                    {
                        var reference = DateTime.UtcNow.AddDays(1); // allow "some" clock skew

                        var entryInTheFuture = archive.Entries.FirstOrDefault(
                            e => e.LastWriteTime.UtcDateTime > reference);

                        if (entryInTheFuture != null)
                        {
                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, string.Format(
                                                                        CultureInfo.CurrentCulture,
                                                                        Strings.PackageEntryFromTheFuture,
                                                                        entryInTheFuture.Name)));
                        }
                    }

                    using (var packageToPush = new PackageArchiveReader(packageStream, leaveStreamOpen: false))
                    {
                        NuspecReader nuspec = null;
                        try
                        {
                            nuspec = packageToPush.GetNuspecReader();
                        }
                        catch (Exception ex)
                        {
                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, string.Format(
                                                                        CultureInfo.CurrentCulture,
                                                                        Strings.UploadPackage_InvalidNuspec,
                                                                        ex.Message)));
                        }

                        if (nuspec.GetMinClientVersion() > Constants.MaxSupportedMinClientVersion)
                        {
                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, string.Format(
                                                                        CultureInfo.CurrentCulture,
                                                                        Strings.UploadPackage_MinClientVersionOutOfRange,
                                                                        nuspec.GetMinClientVersion())));
                        }

                        // Ensure that the user can push packages for this partialId.
                        var packageRegistration = PackageService.FindPackageRegistrationById(nuspec.GetId());
                        if (packageRegistration != null)
                        {
                            if (!packageRegistration.IsOwner(user))
                            {
                                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Forbidden,
                                                                        Strings.ApiKeyNotAuthorized));
                            }

                            // Check if a particular Id-Version combination already exists. We eventually need to remove this check.
                            string normalizedVersion = nuspec.GetVersion().ToNormalizedString();
                            bool   packageExists     =
                                packageRegistration.Packages.Any(
                                    p => String.Equals(
                                        p.NormalizedVersion,
                                        normalizedVersion,
                                        StringComparison.OrdinalIgnoreCase));

                            if (packageExists)
                            {
                                return(new HttpStatusCodeWithBodyResult(
                                           HttpStatusCode.Conflict,
                                           String.Format(CultureInfo.CurrentCulture, Strings.PackageExistsAndCannotBeModified,
                                                         nuspec.GetId(), nuspec.GetVersion().ToNormalizedStringSafe())));
                            }
                        }

                        var packageStreamMetadata = new PackageStreamMetadata
                        {
                            HashAlgorithm = Constants.Sha512HashAlgorithmId,
                            Hash          = CryptographyService.GenerateHash(packageStream.AsSeekableStream()),
                            Size          = packageStream.Length,
                        };

                        var package = await PackageService.CreatePackageAsync(
                            packageToPush,
                            packageStreamMetadata,
                            user,
                            commitChanges : false);

                        await AutoCuratePackage.ExecuteAsync(package, packageToPush, commitChanges : false);

                        await EntitiesContext.SaveChangesAsync();

                        using (Stream uploadStream = packageStream)
                        {
                            uploadStream.Position = 0;
                            await PackageFileService.SavePackageFileAsync(package, uploadStream.AsSeekableStream());

                            IndexingService.UpdatePackage(package);
                        }

                        MessageService.SendPackageAddedNotice(package,
                                                              Url.Action("DisplayPackage", "Packages", routeValues: new { id = package.PackageRegistration.Id, version = package.Version }, protocol: Request.Url.Scheme),
                                                              Url.Action("ReportMyPackage", "Packages", routeValues: new { id = package.PackageRegistration.Id, version = package.Version }, protocol: Request.Url.Scheme),
                                                              Url.Action("Account", "Users", routeValues: null, protocol: Request.Url.Scheme));

                        return(new HttpStatusCodeResult(HttpStatusCode.Created));
                    }
                }
                catch (InvalidPackageException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
                catch (InvalidDataException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
                catch (EntityException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
                catch (FrameworkException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
            }
        }
示例#9
0
        private async Task <ActionResult> CreatePackageInternal()
        {
            // Get the user
            var user = GetCurrentUser();

            using (var packageStream = ReadPackageFromRequest())
            {
                try
                {
                    using (var packageToPush = new PackageArchiveReader(packageStream, leaveStreamOpen: false))
                    {
                        NuspecReader nuspec = null;
                        try
                        {
                            nuspec = packageToPush.GetNuspecReader();
                        }
                        catch (Exception ex)
                        {
                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, string.Format(
                                                                        CultureInfo.CurrentCulture,
                                                                        Strings.UploadPackage_InvalidNuspec,
                                                                        ex.Message)));
                        }

                        if (nuspec.GetMinClientVersion() > Constants.MaxSupportedMinClientVersion)
                        {
                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, string.Format(
                                                                        CultureInfo.CurrentCulture,
                                                                        Strings.UploadPackage_MinClientVersionOutOfRange,
                                                                        nuspec.GetMinClientVersion())));
                        }

                        // Ensure that the user can push packages for this partialId.
                        var packageRegistration = PackageService.FindPackageRegistrationById(nuspec.GetId());
                        if (packageRegistration != null)
                        {
                            if (!packageRegistration.IsOwner(user))
                            {
                                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Forbidden, Strings.ApiKeyNotAuthorized));
                            }

                            // Check if a particular Id-Version combination already exists. We eventually need to remove this check.
                            string normalizedVersion = nuspec.GetVersion().ToNormalizedString();
                            bool   packageExists     =
                                packageRegistration.Packages.Any(
                                    p => String.Equals(
                                        p.NormalizedVersion,
                                        normalizedVersion,
                                        StringComparison.OrdinalIgnoreCase));

                            if (packageExists)
                            {
                                return(new HttpStatusCodeWithBodyResult(
                                           HttpStatusCode.Conflict,
                                           String.Format(CultureInfo.CurrentCulture, Strings.PackageExistsAndCannotBeModified,
                                                         nuspec.GetId(), nuspec.GetVersion().ToNormalizedStringSafe())));
                            }
                        }

                        var packageStreamMetadata = new PackageStreamMetadata
                        {
                            HashAlgorithm = Constants.Sha512HashAlgorithmId,
                            Hash          = CryptographyService.GenerateHash(packageStream.AsSeekableStream()),
                            Size          = packageStream.Length,
                        };

                        var package = await PackageService.CreatePackageAsync(packageToPush, packageStreamMetadata, user, commitChanges : false);

                        await AutoCuratePackage.ExecuteAsync(package, packageToPush, commitChanges : false);

                        await EntitiesContext.SaveChangesAsync();

                        using (Stream uploadStream = packageStream)
                        {
                            uploadStream.Position = 0;
                            await PackageFileService.SavePackageFileAsync(package, uploadStream.AsSeekableStream());

                            IndexingService.UpdatePackage(package);
                        }

                        return(new HttpStatusCodeResult(HttpStatusCode.Created));
                    }
                }
                catch (InvalidDataException ex)
                {
                    return(new HttpStatusCodeWithBodyResult(
                               HttpStatusCode.BadRequest,
                               string.Format(CultureInfo.CurrentCulture, Strings.UploadPackage_InvalidPackage, ex.Message)));
                }
            }
        }
示例#10
0
        private async Task <ActionResult> CreatePackageInternal()
        {
            // Get the user
            var user = GetCurrentUser();

            using (var packageStream = ReadPackageFromRequest())
            {
                try
                {
                    using (var archive = new ZipArchive(packageStream, ZipArchiveMode.Read, leaveOpen: true))
                    {
                        var reference = DateTime.UtcNow.AddDays(1); // allow "some" clock skew

                        var entryInTheFuture = archive.Entries.FirstOrDefault(
                            e => e.LastWriteTime.UtcDateTime > reference);

                        if (entryInTheFuture != null)
                        {
                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, string.Format(
                                                                        CultureInfo.CurrentCulture,
                                                                        Strings.PackageEntryFromTheFuture,
                                                                        entryInTheFuture.Name)));
                        }
                    }

                    using (var packageToPush = new PackageArchiveReader(packageStream, leaveStreamOpen: false))
                    {
                        try
                        {
                            PackageService.EnsureValid(packageToPush);
                        }
                        catch (Exception ex)
                        {
                            ex.Log();

                            var message = Strings.FailedToReadUploadFile;
                            if (ex is InvalidPackageException || ex is InvalidDataException || ex is EntityException)
                            {
                                message = ex.Message;
                            }

                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, message));
                        }

                        NuspecReader nuspec;
                        var          errors = ManifestValidator.Validate(packageToPush.GetNuspec(), out nuspec).ToArray();
                        if (errors.Length > 0)
                        {
                            var errorsString = string.Join("', '", errors.Select(error => error.ErrorMessage));
                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, string.Format(
                                                                        CultureInfo.CurrentCulture,
                                                                        errors.Length > 1 ? Strings.UploadPackage_InvalidNuspecMultiple : Strings.UploadPackage_InvalidNuspec,
                                                                        errorsString)));
                        }

                        if (nuspec.GetMinClientVersion() > Constants.MaxSupportedMinClientVersion)
                        {
                            return(new HttpStatusCodeWithBodyResult(HttpStatusCode.BadRequest, string.Format(
                                                                        CultureInfo.CurrentCulture,
                                                                        Strings.UploadPackage_MinClientVersionOutOfRange,
                                                                        nuspec.GetMinClientVersion())));
                        }

                        // Ensure that the user can push packages for this partialId.
                        var packageRegistration = PackageService.FindPackageRegistrationById(nuspec.GetId());
                        if (packageRegistration == null)
                        {
                            // Check if API key allows pushing a new package id
                            if (!ApiKeyScopeAllows(
                                    subject: nuspec.GetId(),
                                    requestedActions: NuGetScopes.PackagePush))
                            {
                                // User cannot push a new package ID as the API key scope does not allow it
                                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Unauthorized, Strings.ApiKeyNotAuthorized));
                            }
                        }
                        else
                        {
                            // Is the user allowed to push this Id?
                            if (!packageRegistration.IsOwner(user))
                            {
                                // Audit that a non-owner tried to push the package
                                await AuditingService.SaveAuditRecord(
                                    new FailedAuthenticatedOperationAuditRecord(
                                        user.Username,
                                        AuditedAuthenticatedOperationAction.PackagePushAttemptByNonOwner,
                                        attemptedPackage : new AuditedPackageIdentifier(
                                            nuspec.GetId(), nuspec.GetVersion().ToNormalizedStringSafe())));

                                // User cannot push a package to an ID owned by another user.
                                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Conflict,
                                                                        string.Format(CultureInfo.CurrentCulture, Strings.PackageIdNotAvailable,
                                                                                      nuspec.GetId())));
                            }

                            // Check if API key allows pushing the current package id
                            if (!ApiKeyScopeAllows(
                                    packageRegistration.Id,
                                    NuGetScopes.PackagePushVersion, NuGetScopes.PackagePush))
                            {
                                // User cannot push a package as the API key scope does not allow it
                                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Unauthorized, Strings.ApiKeyNotAuthorized));
                            }

                            // Check if a particular Id-Version combination already exists. We eventually need to remove this check.
                            string normalizedVersion = nuspec.GetVersion().ToNormalizedString();
                            bool   packageExists     =
                                packageRegistration.Packages.Any(
                                    p => string.Equals(
                                        p.NormalizedVersion,
                                        normalizedVersion,
                                        StringComparison.OrdinalIgnoreCase));

                            if (packageExists)
                            {
                                return(new HttpStatusCodeWithBodyResult(
                                           HttpStatusCode.Conflict,
                                           string.Format(CultureInfo.CurrentCulture, Strings.PackageExistsAndCannotBeModified,
                                                         nuspec.GetId(), nuspec.GetVersion().ToNormalizedStringSafe())));
                            }
                        }

                        var packageStreamMetadata = new PackageStreamMetadata
                        {
                            HashAlgorithm = Constants.Sha512HashAlgorithmId,
                            Hash          = CryptographyService.GenerateHash(packageStream.AsSeekableStream()),
                            Size          = packageStream.Length
                        };

                        var package = await PackageService.CreatePackageAsync(
                            packageToPush,
                            packageStreamMetadata,
                            user,
                            commitChanges : false);

                        await AutoCuratePackage.ExecuteAsync(package, packageToPush, commitChanges : false);

                        using (Stream uploadStream = packageStream)
                        {
                            uploadStream.Position = 0;

                            try
                            {
                                await PackageFileService.SavePackageFileAsync(package, uploadStream.AsSeekableStream());
                            }
                            catch (InvalidOperationException ex)
                            {
                                ex.Log();

                                return(new HttpStatusCodeWithBodyResult(HttpStatusCode.Conflict, Strings.UploadPackage_IdVersionConflict));
                            }
                        }

                        try
                        {
                            await EntitiesContext.SaveChangesAsync();
                        }
                        catch
                        {
                            // If saving to the DB fails for any reason, we need to delete the package we just saved.
                            await PackageFileService.DeletePackageFileAsync(nuspec.GetId(), nuspec.GetVersion().ToNormalizedString());

                            throw;
                        }

                        IndexingService.UpdatePackage(package);

                        // Write an audit record
                        await AuditingService.SaveAuditRecord(
                            new PackageAuditRecord(package, AuditedPackageAction.Create, PackageCreatedVia.Api));

                        // Notify user of push
                        MessageService.SendPackageAddedNotice(package,
                                                              Url.Action("DisplayPackage", "Packages", routeValues: new { id = package.PackageRegistration.Id, version = package.Version }, protocol: Request.Url.Scheme),
                                                              Url.Action("ReportMyPackage", "Packages", routeValues: new { id = package.PackageRegistration.Id, version = package.Version }, protocol: Request.Url.Scheme),
                                                              Url.Action("Account", "Users", routeValues: null, protocol: Request.Url.Scheme));

                        return(new HttpStatusCodeResult(HttpStatusCode.Created));
                    }
                }
                catch (InvalidPackageException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
                catch (InvalidDataException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
                catch (EntityException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
                catch (FrameworkException ex)
                {
                    return(BadRequestForExceptionMessage(ex));
                }
            }
        }