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diff --git a/src/repository/api/ArcanistGitAPI.php b/src/repository/api/ArcanistGitAPI.php
--- a/src/repository/api/ArcanistGitAPI.php
+++ b/src/repository/api/ArcanistGitAPI.php
@@ -554,27 +554,7 @@
}
}
- // "git ls-remote --get-url" is the appropriate plumbing to get the remote
- // URI. "git config remote.origin.url", on the other hand, may not be as
- // accurate (for example, it does not take into account possible URL
- // rewriting rules set by the user through "url.<base>.insteadOf"). However,
- // the --get-url flag requires git 1.7.5.
- $version = $this->getGitVersion();
- if (version_compare($version, '1.7.5', '>=')) {
- list($stdout) = $this->execxLocal('ls-remote --get-url %s', $remote);
- } else {
- list($stdout) = $this->execxLocal('config %s', "remote.{$remote}.url");
- }
-
- $uri = rtrim($stdout);
- // ls-remote echos the remote name (ie 'origin') if no remote URI is found
- // TODO: In 2.7.0 (circa 2016) git introduced `git remote get-url`
- // with saner error handling.
- if (!$uri || $uri === $remote) {
- return null;
- }
-
- return $uri;
+ return $this->getGitRemoteFetchURI($remote);
}
public function getSourceControlPath() {
@@ -1583,10 +1563,110 @@
}
public function isPushableRemote($remote_name) {
+ $uri = $this->getGitRemotePushURI($remote_name);
+ return ($uri !== null);
+ }
+
+ private function getGitRemoteFetchURI($remote_name) {
+ return $this->getGitRemoteURI($remote_name, $for_push = false);
+ }
+
+ private function getGitRemotePushURI($remote_name) {
+ return $this->getGitRemoteURI($remote_name, $for_push = true);
+ }
+
+ private function getGitRemoteURI($remote_name, $for_push) {
+ $remote_uri = $this->loadGitRemoteURI($remote_name, $for_push);
+
+ if ($remote_uri !== null) {
+ $remote_uri = rtrim($remote_uri);
+ if (!strlen($remote_uri)) {
+ $remote_uri = null;
+ }
+ }
+
+ return $remote_uri;
+ }
+
+ private function loadGitRemoteURI($remote_name, $for_push) {
+ // Try to identify the best URI for a given remote. This is complicated
+ // because remotes may have different "push" and "fetch" URIs, may
+ // rewrite URIs with "insteadOf" configuration, and different versions
+ // of Git support different URI resolution commands.
+
+ // Remotes may also have more than one URI of a given type, but we ignore
+ // those cases here.
+
+ // Start with "git remote get-url [--push]". This is the simplest and
+ // most accurate command, but was introduced most recently in Git's
+ // history.
+
+ $argv = array();
+ if ($for_push) {
+ $argv[] = '--push';
+ }
+
+ list($err, $stdout) = $this->execManualLocal(
+ 'remote get-url %Ls -- %s',
+ $argv,
+ $remote_name);
+ if (!$err) {
+ return $stdout;
+ }
+
+ // See T13481. If "git remote get-url [--push]" failed, it might be because
+ // the remote does not exist, but it might also be because the version of
+ // Git is too old to support "git remote get-url", which was introduced
+ // in Git 2.7 (circa late 2015).
+
+ $git_version = $this->getGitVersion();
+ if (version_compare($git_version, '2.7', '>=')) {
+ // This version of Git should support "git remote get-url --push", but
+ // the command failed, so conclude this is not a valid remote and thus
+ // there is no remote URI.
+ return null;
+ }
+
+ // If we arrive here, we're in a version of Git which is too old to
+ // support "git remote get-url [--push]". We're going to fall back to
+ // older and less accurate mechanisms for figuring out the remote URI.
+
+ // The first mechanism we try is "git ls-remote --get-url". This exists
+ // in Git 1.7.5 or newer. It only gives us the fetch URI, so this result
+ // will be incorrect if a remote has different fetch and push URIs.
+ // However, this is very rare, and this result is almost always correct.
+
list($err, $stdout) = $this->execManualLocal(
- 'remote get-url --push -- %s',
+ 'ls-remote --get-url -- %s',
$remote_name);
- return !$err;
+ if (!$err) {
+ // The "git ls-remote --get-url" command just echoes the remote name
+ // (like "origin") if no remote URI is found. Treat this like a failure.
+ $output_is_input = (rtrim($stdout) === $remote_name);
+ if (!$output_is_input) {
+ return $stdout;
+ }
+ }
+
+ if (version_compare($git_version, '1.7.5', '>=')) {
+ // This version of Git should support "git ls-remote --get-url", but
+ // the command failed (or echoed the input), so conclude the remote
+ // really does not exist.
+ return null;
+ }
+
+ // Fall back to the very old "git config -- remote.origin.url" command.
+ // This does not give us push URLs and does not resolve "insteadOf"
+ // aliases, but still works in the simplest (and most common) cases.
+
+ list($err, $stdout) = $this->execManualLocal(
+ 'config -- %s',
+ sprintf('remote.%s.url', $remote_name));
+ if (!$err) {
+ return $stdout;
+ }
+
+ return null;
}
}

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