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	Index: resources/sql/patches/20131211.phragmentedges.sql
	===================================================================
	--- /dev/null
	+++ resources/sql/patches/20131211.phragmentedges.sql
	@@ -0,0 +1,15 @@
	+CREATE TABLE {$NAMESPACE}_phragment.edge (
	+ src VARCHAR(64) NOT NULL COLLATE utf8_bin,
	+ type VARCHAR(64) NOT NULL COLLATE utf8_bin,
	+ dst VARCHAR(64) NOT NULL COLLATE utf8_bin,
	+ dateCreated INT UNSIGNED NOT NULL,
	+ seq INT UNSIGNED NOT NULL,
	+ dataID INT UNSIGNED,
	+ PRIMARY KEY (src, type, dst),
	+ KEY (src, type, dateCreated, seq)
	+) ENGINE=InnoDB, COLLATE utf8_general_ci;
	+
	+CREATE TABLE {$NAMESPACE}_phragment.edgedata (
	+ id INT UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
	+ data LONGTEXT NOT NULL COLLATE utf8_bin
	+) ENGINE=InnoDB, COLLATE utf8_general_ci;
	Index: src/__phutil_library_map__.php
	===================================================================
	--- src/__phutil_library_map__.php
	+++ src/__phutil_library_map__.php
	@@ -2180,6 +2180,7 @@
	'PhortuneTestPaymentProvider' => 'applications/phortune/provider/PhortuneTestPaymentProvider.php',
	'PhortuneWePayPaymentProvider' => 'applications/phortune/provider/PhortuneWePayPaymentProvider.php',
	'PhragmentBrowseController' => 'applications/phragment/controller/PhragmentBrowseController.php',
	+ 'PhragmentCapabilityCanCreate' => 'applications/phragment/capability/PhragmentCapabilityCanCreate.php',
	'PhragmentController' => 'applications/phragment/controller/PhragmentController.php',
	'PhragmentCreateController' => 'applications/phragment/controller/PhragmentCreateController.php',
	'PhragmentDAO' => 'applications/phragment/storage/PhragmentDAO.php',
	@@ -2193,6 +2194,7 @@
	'PhragmentPHIDTypeSnapshot' => 'applications/phragment/phid/PhragmentPHIDTypeSnapshot.php',
	'PhragmentPatchController' => 'applications/phragment/controller/PhragmentPatchController.php',
	'PhragmentPatchUtil' => 'applications/phragment/util/PhragmentPatchUtil.php',
	+ 'PhragmentPolicyController' => 'applications/phragment/controller/PhragmentPolicyController.php',
	'PhragmentRevertController' => 'applications/phragment/controller/PhragmentRevertController.php',
	'PhragmentSnapshot' => 'applications/phragment/storage/PhragmentSnapshot.php',
	'PhragmentSnapshotChild' => 'applications/phragment/storage/PhragmentSnapshotChild.php',
	@@ -4790,6 +4792,7 @@
	'PhortuneTestPaymentProvider' => 'PhortunePaymentProvider',
	'PhortuneWePayPaymentProvider' => 'PhortunePaymentProvider',
	'PhragmentBrowseController' => 'PhragmentController',
	+ 'PhragmentCapabilityCanCreate' => 'PhabricatorPolicyCapability',
	'PhragmentController' => 'PhabricatorController',
	'PhragmentCreateController' => 'PhragmentController',
	'PhragmentDAO' => 'PhabricatorLiskDAO',
	@@ -4811,6 +4814,7 @@
	'PhragmentPHIDTypeSnapshot' => 'PhabricatorPHIDType',
	'PhragmentPatchController' => 'PhragmentController',
	'PhragmentPatchUtil' => 'Phobject',
	+ 'PhragmentPolicyController' => 'PhragmentController',
	'PhragmentRevertController' => 'PhragmentController',
	'PhragmentSnapshot' =>
	array(
	Index: src/applications/files/application/PhabricatorApplicationFiles.php
	===================================================================
	--- src/applications/files/application/PhabricatorApplicationFiles.php
	+++ src/applications/files/application/PhabricatorApplicationFiles.php
	@@ -61,6 +61,7 @@
	'xform/(?P<transform>[^/]+)/(?P<phid>[^/]+)/(?P<key>[^/]+)/'
	=> 'PhabricatorFileTransformController',
	'uploaddialog/' => 'PhabricatorFileUploadDialogController',
	+ 'download/(?P<phid>[^/]+)/' => 'PhabricatorFileDialogController',
	),
	);
	}
	Index: src/applications/files/controller/PhabricatorFileDataController.php
	===================================================================
	--- src/applications/files/controller/PhabricatorFileDataController.php
	+++ src/applications/files/controller/PhabricatorFileDataController.php
	@@ -66,12 +66,12 @@
	if ($is_viewable && !$force_download) {
	$response->setMimeType($file->getViewableMimeType());
	} else {
	- if (!$request->isHTTPPost()) {
	- // NOTE: Require POST to download files. We'd rather go full-bore and
	- // do a real CSRF check, but can't currently authenticate users on the
	- // file domain. This should blunt any attacks based on iframes, script
	- // tags, applet tags, etc., at least. Send the user to the "info" page
	- // if they're using some other method.
	+ if (!$request->isHTTPPost() && !$alt_domain) {
	+ // NOTE: Require POST to download files from the primary domain. We'd
	+ // rather go full-bore and do a real CSRF check, but can't currently
	+ // authenticate users on the file domain. This should blunt any
	+ // attacks based on iframes, script tags, applet tags, etc., at least.
	+ // Send the user to the "info" page if they're using some other method.
	return id(new AphrontRedirectResponse())
	->setURI(PhabricatorEnv::getProductionURI($file->getBestURI()));
	}
	Index: src/applications/phragment/application/PhabricatorApplicationPhragment.php
	===================================================================
	--- src/applications/phragment/application/PhabricatorApplicationPhragment.php
	+++ src/applications/phragment/application/PhabricatorApplicationPhragment.php
	@@ -37,6 +37,7 @@
	'browse/(?P<dblob>.*)' => 'PhragmentBrowseController',
	'create/(?P<dblob>.*)' => 'PhragmentCreateController',
	'update/(?P<dblob>.*)' => 'PhragmentUpdateController',
	+ 'policy/(?P<dblob>.*)' => 'PhragmentPolicyController',
	'history/(?P<dblob>.*)' => 'PhragmentHistoryController',
	'zip/(?P<dblob>.*)' => 'PhragmentZIPController',
	'zip@(?P<snapshot>[^/]+)/(?P<dblob>.*)' => 'PhragmentZIPController',
	@@ -56,5 +57,12 @@
	);
	}

	+ protected function getCustomCapabilities() {
	+ return array(
	+ PhragmentCapabilityCanCreate::CAPABILITY => array(
	+ ),
	+ );
	+ }
	+
	}

	Index: src/applications/phragment/capability/PhragmentCapabilityCanCreate.php
	===================================================================
	--- /dev/null
	+++ src/applications/phragment/capability/PhragmentCapabilityCanCreate.php
	@@ -0,0 +1,20 @@
	+<?php
	+
	+final class PhragmentCapabilityCanCreate
	+ extends PhabricatorPolicyCapability {
	+
	+ const CAPABILITY = 'phragment.create';
	+
	+ public function getCapabilityKey() {
	+ return self::CAPABILITY;
	+ }
	+
	+ public function getCapabilityName() {
	+ return pht('Can Create Fragments');
	+ }
	+
	+ public function describeCapabilityRejection() {
	+ return pht('You do not have permission to create fragments.');
	+ }
	+
	+}
	Index: src/applications/phragment/controller/PhragmentBrowseController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentBrowseController.php
	+++ src/applications/phragment/controller/PhragmentBrowseController.php
	@@ -4,6 +4,10 @@

	private $dblob;

	+ public function shouldAllowPublic() {
	+ return true;
	+ }
	+
	public function willProcessRequest(array $data) {
	$this->dblob = idx($data, "dblob", "");
	}
	@@ -24,11 +28,14 @@
	}

	$crumbs = $this->buildApplicationCrumbsWithPath($parents);
	- $crumbs->addAction(
	- id(new PHUIListItemView())
	- ->setName(pht('Create Fragment'))
	- ->setHref($this->getApplicationURI('/create/'.$path))
	- ->setIcon('create'));
	+ if ($this->hasApplicationCapability(
	+ PhragmentCapabilityCanCreate::CAPABILITY)) {
	+ $crumbs->addAction(
	+ id(new PHUIListItemView())
	+ ->setName(pht('Create Fragment'))
	+ ->setHref($this->getApplicationURI('/create/'.$path))
	+ ->setIcon('create'));
	+ }

	$current_box = $this->createCurrentFragmentView($current, false);

	@@ -79,6 +86,7 @@
	return $this->buildApplicationPage(
	array(
	$crumbs,
	+ $this->renderConfigurationWarningIfRequired(),
	$current_box,
	$list),
	array(
	Index: src/applications/phragment/controller/PhragmentController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentController.php
	+++ src/applications/phragment/controller/PhragmentController.php
	@@ -84,7 +84,7 @@
	->withPHIDs(array($fragment->getLatestVersion()->getFilePHID()))
	->executeOne();
	if ($file !== null) {
	- $file_uri = $file->getBestURI();
	+ $file_uri = $file->getDownloadURI();
	}
	}

	@@ -93,6 +93,13 @@
	->setPolicyObject($fragment)
	->setUser($viewer);

	+ $can_edit = PhabricatorPolicyFilter::hasCapability(
	+ $viewer,
	+ $fragment,
	+ PhabricatorPolicyCapability::CAN_EDIT);
	+
	+ $zip_uri = $this->getApplicationURI("zip/".$fragment->getPath());
	+
	$actions = id(new PhabricatorActionListView())
	->setUser($viewer)
	->setObject($fragment)
	@@ -100,30 +107,39 @@
	$actions->addAction(
	id(new PhabricatorActionView())
	->setName(pht('Download Fragment'))
	- ->setHref($file_uri)
	- ->setDisabled($file === null)
	+ ->setHref($this->isCorrectlyConfigured() ? $file_uri : null)
	+ ->setDisabled($file === null \|\| !$this->isCorrectlyConfigured())
	->setIcon('download'));
	$actions->addAction(
	id(new PhabricatorActionView())
	->setName(pht('Download Contents as ZIP'))
	- ->setHref($this->getApplicationURI("zip/".$fragment->getPath()))
	- ->setDisabled(false) // TODO: Policy
	+ ->setHref($this->isCorrectlyConfigured() ? $zip_uri : null)
	+ ->setDisabled(!$this->isCorrectlyConfigured())
	->setIcon('zip'));
	if (!$fragment->isDirectory()) {
	$actions->addAction(
	id(new PhabricatorActionView())
	->setName(pht('Update Fragment'))
	->setHref($this->getApplicationURI("update/".$fragment->getPath()))
	- ->setDisabled(false) // TODO: Policy
	+ ->setDisabled(!$can_edit)
	+ ->setWorkflow(!$can_edit)
	->setIcon('edit'));
	} else {
	$actions->addAction(
	id(new PhabricatorActionView())
	->setName(pht('Convert to File'))
	->setHref($this->getApplicationURI("update/".$fragment->getPath()))
	- ->setDisabled(false) // TODO: Policy
	+ ->setDisabled(!$can_edit)
	+ ->setWorkflow(!$can_edit)
	->setIcon('edit'));
	}
	+ $actions->addAction(
	+ id(new PhabricatorActionView())
	+ ->setName(pht('Set Fragment Policies'))
	+ ->setHref($this->getApplicationURI("policy/".$fragment->getPath()))
	+ ->setDisabled(!$can_edit)
	+ ->setWorkflow(!$can_edit)
	+ ->setIcon('edit'));
	if ($is_history_view) {
	$actions->addAction(
	id(new PhabricatorActionView())
	@@ -142,7 +158,8 @@
	->setName(pht('Create Snapshot'))
	->setHref($this->getApplicationURI(
	"snapshot/create/".$fragment->getPath()))
	- ->setDisabled(false) // TODO: Policy
	+ ->setDisabled(!$can_edit)
	+ ->setWorkflow(!$can_edit)
	->setIcon('snapshot'));
	$actions->addAction(
	id(new PhabricatorActionView())
	@@ -150,7 +167,7 @@
	->setHref($this->getApplicationURI(
	"snapshot/promote/latest/".$fragment->getPath()))
	->setWorkflow(true)
	- ->setDisabled(false) // TODO: Policy
	+ ->setDisabled(!$can_edit)
	->setIcon('promote'));

	$properties = id(new PHUIPropertyListView())
	@@ -188,4 +205,33 @@
	->addPropertyList($properties);
	}

	+ function renderConfigurationWarningIfRequired() {
	+ $alt = PhabricatorEnv::getEnvConfig("security.alternate-file-domain");
	+ if ($alt === null) {
	+ return id(new AphrontErrorView())
	+ ->setTitle(pht('security.alternate-file-domain must be configured!'))
	+ ->setSeverity(AphrontErrorView::SEVERITY_ERROR)
	+ ->appendChild(phutil_tag('p', array(), pht(
	+ 'Because Phragment generates files (such as ZIP archives and '.
	+ 'patches) as they are requested, it requires that you configure '.
	+ 'the `security.alterate-file-domain` option. This option on it\'s '.
	+ 'own will also provide additional security when serving files '.
	+ 'across Phabricator.')));
	+ }
	+ return null;
	+ }
	+
	+ /**
	+ * We use this to disable the download links if the alternate domain is
	+ * not configured correctly. Although the download links will mostly work
	+ * for logged in users without an alternate domain, the behaviour is
	+ * reasonably non-consistent and will deny public users, even if policies
	+ * are configured otherwise (because the Files app does not support showing
	+ * the info page to viewers who are not logged in).
	+ */
	+ function isCorrectlyConfigured() {
	+ $alt = PhabricatorEnv::getEnvConfig("security.alternate-file-domain");
	+ return $alt !== null;
	+ }
	+
	}
	Index: src/applications/phragment/controller/PhragmentCreateController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentCreateController.php
	+++ src/applications/phragment/controller/PhragmentCreateController.php
	@@ -123,6 +123,7 @@
	return $this->buildApplicationPage(
	array(
	$crumbs,
	+ $this->renderConfigurationWarningIfRequired(),
	$box),
	array(
	'title' => pht('Create Fragment'),
	Index: src/applications/phragment/controller/PhragmentHistoryController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentHistoryController.php
	+++ src/applications/phragment/controller/PhragmentHistoryController.php
	@@ -4,6 +4,10 @@

	private $dblob;

	+ public function shouldAllowPublic() {
	+ return true;
	+ }
	+
	public function willProcessRequest(array $data) {
	$this->dblob = idx($data, "dblob", "");
	}
	@@ -21,11 +25,14 @@
	$path = $current->getPath();

	$crumbs = $this->buildApplicationCrumbsWithPath($parents);
	- $crumbs->addAction(
	- id(new PHUIListItemView())
	- ->setName(pht('Create Fragment'))
	- ->setHref($this->getApplicationURI('/create/'.$path))
	- ->setIcon('create'));
	+ if ($this->hasApplicationCapability(
	+ PhragmentCapabilityCanCreate::CAPABILITY)) {
	+ $crumbs->addAction(
	+ id(new PHUIListItemView())
	+ ->setName(pht('Create Fragment'))
	+ ->setHref($this->getApplicationURI('/create/'.$path))
	+ ->setIcon('create'));
	+ }

	$current_box = $this->createCurrentFragmentView($current, true);

	@@ -44,6 +51,11 @@
	->execute();
	$files = mpull($files, null, 'getPHID');

	+ $can_edit = PhabricatorPolicyFilter::hasCapability(
	+ $viewer,
	+ $current,
	+ PhabricatorPolicyCapability::CAN_EDIT);
	+
	$first = true;
	foreach ($versions as $version) {
	$item = id(new PHUIObjectItemView());
	@@ -58,7 +70,7 @@
	$item->addAttribute('Deletion');
	}

	- if (!$first) {
	+ if (!$first && $can_edit) {
	$item->addAction(id(new PHUIListItemView())
	->setIcon('undo')
	->setRenderNameAsTooltip(true)
	@@ -71,13 +83,15 @@
	$disabled = !isset($files[$version->getFilePHID()]);
	$action = id(new PHUIListItemView())
	->setIcon('download')
	- ->setDisabled($disabled)
	+ ->setDisabled($disabled \|\| !$this->isCorrectlyConfigured())
	->setRenderNameAsTooltip(true)
	->setName(pht("Download"));
	- if (!$disabled) {
	- $action->setHref($files[$version->getFilePHID()]->getBestURI());
	+ if (!$disabled && $this->isCorrectlyConfigured()) {
	+ $action->setHref($files[$version->getFilePHID()]
	+ ->getDownloadURI($version->getURI()));
	}
	$item->addAction($action);
	+
	$list->addItem($item);

	$first = false;
	@@ -86,6 +100,7 @@
	return $this->buildApplicationPage(
	array(
	$crumbs,
	+ $this->renderConfigurationWarningIfRequired(),
	$current_box,
	$list),
	array(
	Index: src/applications/phragment/controller/PhragmentPatchController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentPatchController.php
	+++ src/applications/phragment/controller/PhragmentPatchController.php
	@@ -5,6 +5,10 @@
	private $aid;
	private $bid;

	+ public function shouldAllowPublic() {
	+ return true;
	+ }
	+
	public function willProcessRequest(array $data) {
	$this->aid = idx($data, "aid", 0);
	$this->bid = idx($data, "bid", 0);
	@@ -61,7 +65,9 @@
	$patch = PhragmentPatchUtil::calculatePatch($file_a, $file_b);

	if ($patch === null) {
	- throw new Exception("Unable to compute patch!");
	+ // There are no differences between the two files, so we output
	+ // an empty patch.
	+ $patch = '';
	}

	$a_sequence = 'x';
	@@ -74,6 +80,11 @@
	$a_sequence.'.'.
	$version_b->getSequence().'.patch';

	+ $return = $version_b->getURI();
	+ if ($request->getExists('return')) {
	+ $return = $request->getStr('return');
	+ }
	+
	$result = PhabricatorFile::buildFromFileDataOrHash(
	$patch,
	array(
	@@ -81,8 +92,13 @@
	'mime-type' => 'text/plain',
	'ttl' => time() + 60 * 60 * 24,
	));
	+
	+ $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
	+ $result->attachToObject($viewer, $version_b->getFragmentPHID());
	+ unset($unguarded);
	+
	return id(new AphrontRedirectResponse())
	- ->setURI($result->getBestURI());
	+ ->setURI($result->getDownloadURI($return));
	}

	}
	Index: src/applications/phragment/controller/PhragmentPolicyController.php
	===================================================================
	--- /dev/null
	+++ src/applications/phragment/controller/PhragmentPolicyController.php
	@@ -0,0 +1,110 @@
	+<?php
	+
	+final class PhragmentPolicyController extends PhragmentController {
	+
	+ private $dblob;
	+
	+ public function willProcessRequest(array $data) {
	+ $this->dblob = idx($data, "dblob", "");
	+ }
	+
	+ public function processRequest() {
	+ $request = $this->getRequest();
	+ $viewer = $request->getUser();
	+
	+ $parents = $this->loadParentFragments($this->dblob);
	+ if ($parents === null) {
	+ return new Aphront404Response();
	+ }
	+ $fragment = idx($parents, count($parents) - 1, null);
	+
	+ $error_view = null;
	+
	+ if ($request->isFormPost()) {
	+ $errors = array();
	+
	+ $v_view_policy = $request->getStr('viewPolicy');
	+ $v_edit_policy = $request->getStr('editPolicy');
	+ $v_replace_children = $request->getBool('replacePoliciesOnChildren');
	+
	+ $fragment->setViewPolicy($v_view_policy);
	+ $fragment->setEditPolicy($v_edit_policy);
	+
	+ $fragment->save();
	+
	+ if ($v_replace_children) {
	+ // If you can edit a fragment, you can forcibly set the policies
	+ // on child fragments, regardless of whether you can see them or not.
	+ $children = id(new PhragmentFragmentQuery())
	+ ->setViewer(PhabricatorUser::getOmnipotentUser())
	+ ->withLeadingPath($fragment->getPath().'/')
	+ ->execute();
	+ $children_phids = mpull($children, 'getPHID');
	+
	+ $fragment->openTransaction();
	+ foreach ($children as $child) {
	+ $child->setViewPolicy($v_view_policy);
	+ $child->setEditPolicy($v_edit_policy);
	+ $child->save();
	+ }
	+ $fragment->saveTransaction();
	+ }
	+
	+ return id(new AphrontRedirectResponse())
	+ ->setURI('/phragment/browse/'.$fragment->getPath());
	+ }
	+
	+ $policies = id(new PhabricatorPolicyQuery())
	+ ->setViewer($viewer)
	+ ->setObject($fragment)
	+ ->execute();
	+
	+ $form = id(new AphrontFormView())
	+ ->setUser($viewer)
	+ ->appendChild(
	+ id(new AphrontFormPolicyControl())
	+ ->setName('viewPolicy')
	+ ->setPolicyObject($fragment)
	+ ->setCapability(PhabricatorPolicyCapability::CAN_VIEW)
	+ ->setPolicies($policies))
	+ ->appendChild(
	+ id(new AphrontFormPolicyControl())
	+ ->setName('editPolicy')
	+ ->setPolicyObject($fragment)
	+ ->setCapability(PhabricatorPolicyCapability::CAN_EDIT)
	+ ->setPolicies($policies))
	+ ->appendChild(
	+ id(new AphrontFormCheckboxControl())
	+ ->addCheckbox(
	+ 'replacePoliciesOnChildren',
	+ 'true',
	+ pht(
	+ 'Replace policies on child fragments with '.
	+ 'the policies above.')))
	+ ->appendChild(
	+ id(new AphrontFormSubmitControl())
	+ ->setValue(pht('Save Fragment Policies'))
	+ ->addCancelButton(
	+ $this->getApplicationURI('browse/'.$fragment->getPath())));
	+
	+ $crumbs = $this->buildApplicationCrumbsWithPath($parents);
	+ $crumbs->addCrumb(
	+ id(new PhabricatorCrumbView())
	+ ->setName(pht('Edit Fragment Policies')));
	+
	+ $box = id(new PHUIObjectBoxView())
	+ ->setHeaderText(pht('Edit Fragment Policies: %s', $fragment->getPath()))
	+ ->setValidationException(null)
	+ ->setForm($form);
	+
	+ return $this->buildApplicationPage(
	+ array(
	+ $crumbs,
	+ $this->renderConfigurationWarningIfRequired(),
	+ $box),
	+ array(
	+ 'title' => pht('Edit Fragment Policies'),
	+ 'device' => true));
	+ }
	+
	+}
	Index: src/applications/phragment/controller/PhragmentSnapshotCreateController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentSnapshotCreateController.php
	+++ src/applications/phragment/controller/PhragmentSnapshotCreateController.php
	@@ -21,6 +21,11 @@
	return new Aphront404Response();
	}

	+ PhabricatorPolicyFilter::requireCapability(
	+ $viewer,
	+ $fragment,
	+ PhabricatorPolicyCapability::CAN_EDIT);
	+
	$children = id(new PhragmentFragmentQuery())
	->setViewer($viewer)
	->needLatestVersion(true)
	@@ -161,6 +166,7 @@
	return $this->buildApplicationPage(
	array(
	$crumbs,
	+ $this->renderConfigurationWarningIfRequired(),
	$box),
	array(
	'title' => pht('Create Fragment'),
	Index: src/applications/phragment/controller/PhragmentSnapshotDeleteController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentSnapshotDeleteController.php
	+++ src/applications/phragment/controller/PhragmentSnapshotDeleteController.php
	@@ -14,6 +14,9 @@

	$snapshot = id(new PhragmentSnapshotQuery())
	->setViewer($viewer)
	+ ->requireCapabilities(array(
	+ PhabricatorPolicyCapability::CAN_VIEW,
	+ PhabricatorPolicyCapability::CAN_EDIT))
	->withIDs(array($this->id))
	->executeOne();
	if ($snapshot === null) {
	Index: src/applications/phragment/controller/PhragmentSnapshotPromoteController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentSnapshotPromoteController.php
	+++ src/applications/phragment/controller/PhragmentSnapshotPromoteController.php
	@@ -23,6 +23,9 @@
	if ($this->dblob !== null) {
	$this->targetFragment = id(new PhragmentFragmentQuery())
	->setViewer($viewer)
	+ ->requireCapabilities(array(
	+ PhabricatorPolicyCapability::CAN_VIEW,
	+ PhabricatorPolicyCapability::CAN_EDIT))
	->withPaths(array($this->dblob))
	->executeOne();
	if ($this->targetFragment === null) {
	@@ -40,6 +43,9 @@
	if ($this->id !== null) {
	$this->targetSnapshot = id(new PhragmentSnapshotQuery())
	->setViewer($viewer)
	+ ->requireCapabilities(array(
	+ PhabricatorPolicyCapability::CAN_VIEW,
	+ PhabricatorPolicyCapability::CAN_EDIT))
	->withIDs(array($this->id))
	->executeOne();
	if ($this->targetSnapshot === null) {
	@@ -141,7 +147,13 @@
	}
	$snapshot->saveTransaction();

	- return id(new AphrontRedirectResponse());
	+ if ($this->id === null) {
	+ return id(new AphrontRedirectResponse())
	+ ->setURI($this->targetFragment->getURI());
	+ } else {
	+ return id(new AphrontRedirectResponse())
	+ ->setURI($this->targetSnapshot->getURI());
	+ }
	}

	return $this->createDialog();
	Index: src/applications/phragment/controller/PhragmentSnapshotViewController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentSnapshotViewController.php
	+++ src/applications/phragment/controller/PhragmentSnapshotViewController.php
	@@ -4,6 +4,10 @@

	private $id;

	+ public function shouldAllowPublic() {
	+ return true;
	+ }
	+
	public function willProcessRequest(array $data) {
	$this->id = idx($data, "id", "");
	}
	@@ -72,6 +76,7 @@
	return $this->buildApplicationPage(
	array(
	$crumbs,
	+ $this->renderConfigurationWarningIfRequired(),
	$box,
	$list),
	array(
	@@ -100,6 +105,11 @@
	"zip@".$snapshot->getName().
	"/".$snapshot->getPrimaryFragment()->getPath());

	+ $can_edit = PhabricatorPolicyFilter::hasCapability(
	+ $viewer,
	+ $snapshot,
	+ PhabricatorPolicyCapability::CAN_EDIT);
	+
	$actions = id(new PhabricatorActionListView())
	->setUser($viewer)
	->setObject($snapshot)
	@@ -107,24 +117,24 @@
	$actions->addAction(
	id(new PhabricatorActionView())
	->setName(pht('Download Snapshot as ZIP'))
	- ->setHref($zip_uri)
	- ->setDisabled(false) // TODO: Policy
	+ ->setHref($this->isCorrectlyConfigured() ? $zip_uri : null)
	+ ->setDisabled(!$this->isCorrectlyConfigured())
	->setIcon('zip'));
	$actions->addAction(
	id(new PhabricatorActionView())
	->setName(pht('Delete Snapshot'))
	->setHref($this->getApplicationURI(
	"snapshot/delete/".$snapshot->getID()."/"))
	+ ->setDisabled(!$can_edit)
	->setWorkflow(true)
	- ->setDisabled(false) // TODO: Policy
	->setIcon('delete'));
	$actions->addAction(
	id(new PhabricatorActionView())
	->setName(pht('Promote Another Snapshot to Here'))
	->setHref($this->getApplicationURI(
	"snapshot/promote/".$snapshot->getID()."/"))
	+ ->setDisabled(!$can_edit)
	->setWorkflow(true)
	- ->setDisabled(false) // TODO: Policy
	->setIcon('promote'));

	$properties = id(new PHUIPropertyListView())
	Index: src/applications/phragment/controller/PhragmentUpdateController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentUpdateController.php
	+++ src/applications/phragment/controller/PhragmentUpdateController.php
	@@ -74,6 +74,7 @@
	return $this->buildApplicationPage(
	array(
	$crumbs,
	+ $this->renderConfigurationWarningIfRequired(),
	$box),
	array(
	'title' => pht('Update Fragment'),
	Index: src/applications/phragment/controller/PhragmentVersionController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentVersionController.php
	+++ src/applications/phragment/controller/PhragmentVersionController.php
	@@ -4,6 +4,10 @@

	private $id;

	+ public function shouldAllowPublic() {
	+ return true;
	+ }
	+
	public function willProcessRequest(array $data) {
	$this->id = idx($data, "id", 0);
	}
	@@ -41,7 +45,7 @@
	->withPHIDs(array($version->getFilePHID()))
	->executeOne();
	if ($file !== null) {
	- $file_uri = $file->getBestURI();
	+ $file_uri = $file->getDownloadURI();
	}

	$header = id(new PHUIHeaderView())
	@@ -59,8 +63,8 @@
	$actions->addAction(
	id(new PhabricatorActionView())
	->setName(pht('Download Version'))
	- ->setHref($file_uri)
	- ->setDisabled($file === null)
	+ ->setDisabled($file === null \|\| !$this->isCorrectlyConfigured())
	+ ->setHref($this->isCorrectlyConfigured() ? $file_uri : null)
	->setIcon('download'));

	$properties = id(new PHUIPropertyListView())
	@@ -78,6 +82,7 @@
	return $this->buildApplicationPage(
	array(
	$crumbs,
	+ $this->renderConfigurationWarningIfRequired(),
	$box,
	$this->renderPatchFromPreviousVersion($version, $file),
	$this->renderPreviousVersionList($version)),
	@@ -155,11 +160,13 @@
	$item->addAttribute(phabricator_datetime(
	$previous_version->getDateCreated(),
	$viewer));
	+ $patch_uri = $this->getApplicationURI(
	+ 'patch/'.$previous_version->getID().'/'.$version->getID());
	$item->addAction(id(new PHUIListItemView())
	->setIcon('patch')
	->setName(pht("Get Patch"))
	- ->setHref($this->getApplicationURI(
	- 'patch/'.$previous_version->getID().'/'.$version->getID())));
	+ ->setHref($this->isCorrectlyConfigured() ? $patch_uri : null)
	+ ->setDisabled(!$this->isCorrectlyConfigured()));
	$list->addItem($item);
	}

	Index: src/applications/phragment/controller/PhragmentZIPController.php
	===================================================================
	--- src/applications/phragment/controller/PhragmentZIPController.php
	+++ src/applications/phragment/controller/PhragmentZIPController.php
	@@ -7,6 +7,10 @@

	private $snapshotCache;

	+ public function shouldAllowPublic() {
	+ return true;
	+ }
	+
	public function willProcessRequest(array $data) {
	$this->dblob = idx($data, "dblob", "");
	$this->snapshot = idx($data, "snapshot", null);
	@@ -87,7 +91,9 @@
	}

	foreach ($mappings as $path => $file) {
	- $zip->addFromString($path, $file->loadFileData());
	+ if ($file !== null) {
	+ $zip->addFromString($path, $file->loadFileData());
	+ }
	}
	$zip->close();

	@@ -103,8 +109,18 @@
	'name' => $zip_name,
	'ttl' => time() + 60 * 60 * 24,
	));
	+
	+ $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
	+ $file->attachToObject($viewer, $fragment->getPHID());
	+ unset($unguarded);
	+
	+ $return = $fragment->getURI();
	+ if ($request->getExists('return')) {
	+ $return = $request->getStr('return');
	+ }
	+
	return id(new AphrontRedirectResponse())
	- ->setURI($file->getBestURI());
	+ ->setURI($file->getDownloadURI($return));
	}

	/**
	Index: src/applications/phragment/storage/PhragmentFragment.php
	===================================================================
	--- src/applications/phragment/storage/PhragmentFragment.php
	+++ src/applications/phragment/storage/PhragmentFragment.php
	@@ -118,6 +118,8 @@
	$this->setLatestVersionPHID($version->getPHID());
	$this->save();
	$this->saveTransaction();
	+
	+ $file->attachToObject($viewer, $version->getPHID());
	}

	/**
	Index: src/applications/phragment/storage/PhragmentSnapshot.php
	===================================================================
	--- src/applications/phragment/storage/PhragmentSnapshot.php
	+++ src/applications/phragment/storage/PhragmentSnapshot.php
	@@ -48,9 +48,7 @@


	public function getCapabilities() {
	- return array(
	- PhabricatorPolicyCapability::CAN_VIEW
	- );
	+ return $this->getPrimaryFragment()->getCapabilities();
	}

	public function getPolicy($capability) {
	Index: src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php
	===================================================================
	--- src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php
	+++ src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php
	@@ -1828,6 +1828,10 @@
	'type' => 'sql',
	'name' => $this->getPatchPath('20131208.phragmentsnapshot.sql'),
	),
	+ '20131211.phragmentedges.sql' => array(
	+ 'type' => 'sql',
	+ 'name' => $this->getPatchPath('20131211.phragmentedges.sql'),
	+ ),
	);
	}
	}
	Index: src/view/layout/PhabricatorActionView.php
	===================================================================
	--- src/view/layout/PhabricatorActionView.php
	+++ src/view/layout/PhabricatorActionView.php
	@@ -40,7 +40,7 @@
	* viewing.
	*/
	public function getHref() {
	- if ($this->workflow \|\| $this->renderAsForm) {
	+ if (($this->workflow \|\| $this->renderAsForm) && !$this->download) {
	if (!$this->user \|\| !$this->user->isLoggedIn()) {
	return id(new PhutilURI('/auth/start/'))
	->setQueryParam('next', (string)$this->getObjectURI());

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