summaryrefslogtreecommitdiff
path: root/apt-pkg
diff options
context:
space:
mode:
authorDavid Kalnischkies <david@kalnischkies.de>2016-08-28 22:56:17 +0200
committerJulian Andres Klode <jak@debian.org>2016-10-05 21:53:38 +0200
commit3f24abbfc89aa82823df8386ef04f56ad96166ad (patch)
tree6666fcaf2c3f5994f19ca5b25bbd32d9166628a3 /apt-pkg
parent2f7b50d0ca76f05c8f113088b8fc6486a5d17394 (diff)
don't loop on pinning pkgs from absolute debs by regex
An absolute filename for a *.deb file starts with a /. A package with the name of the file is inserted in the cache which is provided by the "real" package for internal reasons. The pinning code detects a regex based wildcard by having the regex start with /. That is no problem as a / can not be included in a package nameā€¦ expect that our virtual filename package can and does. We fix this two ways actually: First, a regex is only being considered a regex if it also ends with / (we don't support flags). That stops our problem with the virtual filename packages already, but to be sure we also do not enter the loop if matcher and package name are equal. It has to be noted that the creation of pins for virtual packages like the here effected filename packages is pointless as only versions can be pinned, but checking that a package is really purely virtual is too costly compared to just creating an unused pin. Closes: 835818 (cherry picked from commit e950b7e2f89b5e48192cd469c963a44fff9f1450)
Diffstat (limited to 'apt-pkg')
-rw-r--r--apt-pkg/policy.cc9
1 files changed, 4 insertions, 5 deletions
diff --git a/apt-pkg/policy.cc b/apt-pkg/policy.cc
index 06c516e53..53165b5db 100644
--- a/apt-pkg/policy.cc
+++ b/apt-pkg/policy.cc
@@ -278,14 +278,13 @@ void pkgPolicy::CreatePin(pkgVersionMatch::MatchType Type,string Name,
Name.erase(found);
}
- // Allow pinning by wildcards
- // TODO: Maybe we should always prefer specific pins over non-
- // specific ones.
- if (Name[0] == '/' || Name.find_first_of("*[?") != string::npos)
+ // Allow pinning by wildcards - beware of package names looking like wildcards!
+ // TODO: Maybe we should always prefer specific pins over non-specific ones.
+ if ((Name[0] == '/' && Name[Name.length() - 1] == '/') || Name.find_first_of("*[?") != string::npos)
{
pkgVersionMatch match(Data, Type);
for (pkgCache::GrpIterator G = Cache->GrpBegin(); G.end() != true; ++G)
- if (match.ExpressionMatches(Name, G.Name()))
+ if (Name != G.Name() && match.ExpressionMatches(Name, G.Name()))
{
if (Arch.empty() == false)
CreatePin(Type, string(G.Name()).append(":").append(Arch), Data, Priority);