[PATCH 2/1] http_parser: workaround parsing OOM in Ragel 6.10

[Eric Wong <e@80x24.org>]

Noticed in FreeBSD 11.2 where Ragel 6.10 was OOM-ing, this
doesn't affect Ragel 6.9.

TODO: make sure this is fixed upstream in Ragel.
---
 http_parser.rl | 10 +++++-----
 path_parser.rl |  3 ++-
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/http_parser.rl b/http_parser.rl
index 4ecb97a..e07aea8 100644
--- a/http_parser.rl
+++ b/http_parser.rl
@@ -48,16 +48,16 @@ static char *skip_header(struct mog_http *http, char *buf, const char *pe)
 	DELETE = "DELETE "> { http->_p.http_method = MOG_HTTP_METHOD_DELETE; };
 	MKCOL = "MKCOL "> { http->_p.http_method = MOG_HTTP_METHOD_MKCOL; };
 
-	mog_fs_path = (mog_path) > { http->_p.path_tip = to_u8(fpc - buf); }
+	mog_path_start = '/' > { http->_p.path_tip = to_u8(fpc - buf); };
 		# TODO: maybe folks use query string/fragments for logging...
-		(" HTTP/1.") > { http->_p.path_end = to_u8(fpc - buf); };
-
-	usage_path = ('/' devid "usage HTTP/1.") @ { http->_p.usage_txt = 1; };
+	mog_path_end = (" HTTP/1.") > { http->_p.path_end = to_u8(fpc - buf); };
+	usage_path = ("usage HTTP/1.") @ { http->_p.usage_txt = 1; };
 
 	# no HTTP/0.9 for now, sorry (not :P)
 	req_line = (HEAD|GET|PUT|DELETE|MKCOL)
 		("http://" [^/]+)?
-		'/'*(usage_path | mog_fs_path)
+		'/'* mog_path_start devid? (usage_path |
+					    (mog_path_rest mog_path_end) )
 		('0'|'1'> { http->_p.persistent = 1; }) '\r'LF;
 
 	content_length = "Content-Length:"i sep
diff --git a/path_parser.rl b/path_parser.rl
index 4f0b3ec..974b6c6 100644
--- a/path_parser.rl
+++ b/path_parser.rl
@@ -17,5 +17,6 @@
 		}
 		'/';
 	# only stuff MogileFS will use
-	mog_path = '/' (devid)? [a-zA-Z0-9/\.\-]{0,36};
+	mog_path_rest = [a-zA-Z0-9/\.\-]{0,36};
+	mog_path = '/' (devid)? mog_path_rest;
 }%%