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Updates for Mercurial's HTTP protocol
Summary: While testing https://secure.phabricator.com/D21864 I ran into some issues getting mercurial HTTP access working. Using wireshark I confirmed that my local mercurial 6.4 was not including command arguments as HTTP headers but in the querystring. I didn't dig too deep into understanding when/why this started happening. The protocol documents this in [[ https://repo.mercurial-scm.org/hg/file/tip/mercurial/helptext/internals/wireprotocol.txt | wireprotocol.txt ]]. >Command arguments can be sent multiple ways. The simplest is part of the URL query string using ``x-www-form-urlencoded`` encoding (see Python's ``urllib.urlencode()``. However, many servers impose length limitations on the URL. So this mechanism is typically only used if the server doesn't support other mechanisms. Based on that either the mercurial on the server is really old (it's 6.1.1 tho) or maybe some other parsing/info passing in Phab's handling of the wire protocol is causing the client to downgrade the wire protocol support. Cherry-picked from: https://secure.phabricator.com/D21867 https://secure.phabricator.com/rP0b6e758978a9691bd5ad25db4aa4c4301640a9a9 Test Plan: Host mercurial repo using HTTP, test push/pull. Reviewers: O1 Blessed Committers, valerio.bozzolan Reviewed By: O1 Blessed Committers, valerio.bozzolan Subscribers: tobiaswiese, Matthew, Cigaryno Differential Revision: https://we.phorge.it/D25471
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1 changed files with 22 additions and 3 deletions
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@ -878,10 +878,29 @@ final class DiffusionServeController extends DiffusionController {
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}
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$args_raw[] = $_SERVER[$header];
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}
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$args_raw = implode('', $args_raw);
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return id(new PhutilQueryStringParser())
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->parseQueryString($args_raw);
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if ($args_raw) {
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$args_raw = implode('', $args_raw);
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return id(new PhutilQueryStringParser())
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->parseQueryString($args_raw);
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}
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// Sometimes arguments come in via the query string. Note that this will
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// not handle multi-value entries e.g. "a[]=1,a[]=2" however it's unclear
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// whether or how the mercurial protocol should handle this.
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$query = idx($_SERVER, 'QUERY_STRING', '');
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$query_pairs = id(new PhutilQueryStringParser())
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->parseQueryString($query);
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foreach ($query_pairs as $key => $value) {
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// Filter out private/internal keys as well as the command itself.
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if (strncmp($key, '__', 2) && $key != 'cmd') {
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$args_raw[$key] = $value;
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}
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}
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// TODO: Arguments can also come in via request body for POST requests. The
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// body would be all arguments, url-encoded.
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return $args_raw;
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}
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private function formatMercurialArguments($command, array $arguments) {
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