From c69b0f404b40e56e05c9ab443353cb7332c61183 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Mon, 11 Jun 2007 02:49:15 +0000
Subject: [PATCH] For bug #181355, detect parenthesis mismatch in
 paren_reduce(), raise an InvalidDependString exception, and make sure that
 all callers handle the exception properly. (trunk r6795:6797)

svn path=/main/branches/2.1.2/; revision=6798
---
 bin/repoman        |  4 ++++
 pym/portage.py     | 16 ++++++++++++----
 pym/portage_dep.py | 11 +++++++++--
 3 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/bin/repoman b/bin/repoman
index 3a939d9ac..c033a0d44 100755
--- a/bin/repoman
+++ b/bin/repoman
@@ -1129,6 +1129,10 @@ for x in scanlist:
 			except ValueError:
 				badsyntax.append("parenthesis mismatch")
 				mydeplist = []
+			except portage_exception.InvalidDependString, e:
+				badsyntax.append(str(e))
+				del e
+				mydeplist = []
 
 			try:
 				portage_dep.use_reduce(mydeplist, excludeall=myiuse)
diff --git a/pym/portage.py b/pym/portage.py
index c59edb941..ee7b9c4a0 100644
--- a/pym/portage.py
+++ b/pym/portage.py
@@ -3092,9 +3092,14 @@ def doebuild_environment(myebuild, mydo, myroot, mysettings, debug, use_cache, m
 		if not eapi_is_supported(eapi):
 			# can't do anything with this.
 			raise portage_exception.UnsupportedAPIException(mycpv, eapi)
-		mysettings["PORTAGE_RESTRICT"] = " ".join(flatten(
-			portage_dep.use_reduce(portage_dep.paren_reduce(
-			mysettings["RESTRICT"]), uselist=mysettings["USE"].split())))
+		try:
+			mysettings["PORTAGE_RESTRICT"] = " ".join(flatten(
+				portage_dep.use_reduce(portage_dep.paren_reduce(
+				mysettings.get("RESTRICT","")),
+				uselist=mysettings.get("USE","").split())))
+		except portage_exception.InvalidDependString:
+			# RESTRICT is validated again inside doebuild, so let this go
+			mysettings["PORTAGE_RESTRICT"] = ""
 
 	if mysplit[2] == "r0":
 		mysettings["PVR"]=mysplit[1]
@@ -4398,7 +4403,10 @@ def dep_check(depstring, mydbapi, mysettings, use="yes", mode=None, myuse=None,
 		myusesplit=[]
 
 	#convert parenthesis to sublists
-	mysplit = portage_dep.paren_reduce(depstring)
+	try:
+		mysplit = portage_dep.paren_reduce(depstring)
+	except portage_exception.InvalidDependString, e:
+		return [0, str(e)]
 
 	mymasks = set()
 	useforce = set()
diff --git a/pym/portage_dep.py b/pym/portage_dep.py
index b87058f7f..a8007857e 100644
--- a/pym/portage_dep.py
+++ b/pym/portage_dep.py
@@ -69,13 +69,20 @@ def paren_reduce(mystr,tokenize=1):
 	"""
 	mylist = []
 	while mystr:
-		if ("(" not in mystr) and (")" not in mystr):
+		left_paren = mystr.find("(")
+		has_left_paren = left_paren != -1
+		right_paren = mystr.find(")")
+		has_right_paren = right_paren != -1
+		if not has_left_paren and not has_right_paren:
 			freesec = mystr
 			subsec = None
 			tail = ""
 		elif mystr[0] == ")":
 			return [mylist,mystr[1:]]
-		elif ("(" in mystr) and (mystr.index("(") < mystr.index(")")):
+		elif has_left_paren and not has_right_paren:
+			raise portage_exception.InvalidDependString(
+				"missing right parenthesis: '%s'" % mystr)
+		elif has_left_paren and left_paren < right_paren:
 			freesec,subsec = mystr.split("(",1)
 			subsec,tail = paren_reduce(subsec,tokenize)
 		else:
-- 
2.26.2