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diff --git a/src/applications/diffusion/protocol/DiffusionGitUploadPackWireProtocol.php b/src/applications/diffusion/protocol/DiffusionGitUploadPackWireProtocol.php
--- a/src/applications/diffusion/protocol/DiffusionGitUploadPackWireProtocol.php
+++ b/src/applications/diffusion/protocol/DiffusionGitUploadPackWireProtocol.php
@@ -187,61 +187,76 @@
// <hash> <ref-name>\0<capabilities>
// <hash> <ref-name>
// ...
+ //
+ // See T13309. The end of this list (which may be empty if a repository
+ // does not have any refs) has a list of zero or more of these:
+ //
+ // shallow <hash>
+ //
+ // These entries are present if the repository is a shallow clone
+ // which was made with the "--depth" flag.
+ //
+ // Note that "shallow" frames do not advertise capabilities, and if
+ // a repository has only "shallow" frames, capabilities are never
+ // advertised.
$bytes = $frame['bytes'];
$matches = array();
if ($is_first) {
- $ok = preg_match(
- '('.
- '^'.
- '(?P<hash>[0-9a-f]{40})'.
- ' '.
- '(?P<name>[^\0\n]+)'.
- '\0'.
- '(?P<capabilities>[^\n]+)'.
- '\n'.
- '\z'.
- ')',
- $bytes,
- $matches);
- if (!$ok) {
+ $capabilities_pattern = '\0(?P<capabilities>[^\n]+)';
+ } else {
+ $capabilities_pattern = '';
+ }
+
+ $ok = preg_match(
+ '('.
+ '^'.
+ '(?:'.
+ '(?P<hash>[0-9a-f]{40}) (?P<name>[^\0\n]+)'.$capabilities_pattern.
+ '|'.
+ 'shallow (?P<shallow>[0-9a-f]{40})'.
+ ')'.
+ '\n'.
+ '\z'.
+ ')',
+ $bytes,
+ $matches);
+
+ if (!$ok) {
+ if ($is_first) {
throw new Exception(
pht(
'Unexpected "git upload-pack" initial protocol frame: expected '.
- '"<hash> <name>\0<capabilities>\n", got "%s".',
+ '"<hash> <name>\0<capabilities>\n", or '.
+ '"shallow <hash>\n", got "%s".',
$bytes));
- }
- } else {
- $ok = preg_match(
- '('.
- '^'.
- '(?P<hash>[0-9a-f]{40})'.
- ' '.
- '(?P<name>[^\0\n]+)'.
- '\n'.
- '\z'.
- ')',
- $bytes,
- $matches);
- if (!$ok) {
+ } else {
throw new Exception(
pht(
'Unexpected "git upload-pack" protocol frame: expected '.
- '"<hash> <name>\n", got "%s".',
+ '"<hash> <name>\n", or "shallow <hash>\n", got "%s".',
$bytes));
}
}
- $hash = $matches['hash'];
- $name = $matches['name'];
+ if (isset($matches['shallow'])) {
+ $name = null;
+ $hash = $matches['shallow'];
+ $is_shallow = true;
+ } else {
+ $name = $matches['name'];
+ $hash = $matches['hash'];
+ $is_shallow = false;
+ }
- if ($is_first) {
+ if (isset($matches['capabilities'])) {
$capabilities = $matches['capabilities'];
}
$refs[] = array(
'hash' => $hash,
'name' => $name,
+ 'shallow' => $is_shallow,
);
}
@@ -252,10 +267,16 @@
->setCapabilities($capabilities);
foreach ($refs as $ref) {
- $ref_list->addRef(
- id(new DiffusionGitWireProtocolRef())
- ->setName($ref['name'])
- ->setHash($ref['hash']));
+ $wire_ref = id(new DiffusionGitWireProtocolRef())
+ ->setHash($ref['hash']);
+
+ if ($ref['shallow']) {
+ $wire_ref->setIsShallow(true);
+ } else {
+ $wire_ref->setName($ref['name']);
+ }
+
+ $ref_list->addRef($wire_ref);
}
// TODO: Here, we have a structured list of refs. In a future change,
@@ -275,10 +296,19 @@
// a little surprising, but is consistent with the native behavior of the
// protocol.
+ // Likewise, we don't send back any capabilities if we're sending only
+ // "shallow" frames.
+
$output = array();
$is_first = true;
foreach ($refs as $ref) {
- if ($is_first) {
+ $is_shallow = $ref->getIsShallow();
+
+ if ($is_shallow) {
+ $result = sprintf(
+ "shallow %s\n",
+ $ref->getHash());
+ } else if ($is_first) {
$result = sprintf(
"%s %s\0%s\n",
$ref->getHash(),
diff --git a/src/applications/diffusion/protocol/DiffusionGitWireProtocolRef.php b/src/applications/diffusion/protocol/DiffusionGitWireProtocolRef.php
--- a/src/applications/diffusion/protocol/DiffusionGitWireProtocolRef.php
+++ b/src/applications/diffusion/protocol/DiffusionGitWireProtocolRef.php
@@ -5,6 +5,7 @@
private $name;
private $hash;
+ private $isShallow;
public function setName($name) {
$this->name = $name;
@@ -24,9 +25,19 @@
return $this->hash;
}
+ public function setIsShallow($is_shallow) {
+ $this->isShallow = $is_shallow;
+ return $this;
+ }
+
+ public function getIsShallow() {
+ return $this->isShallow;
+ }
+
public function newSortVector() {
return id(new PhutilSortVector())
- ->addString($this->getName());
+ ->addInt((int)$this->getIsShallow())
+ ->addString((string)$this->getName());
}
}

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