From 954a7bf51e635e55198df38a057ae9eb79209e3a Mon Sep 17 00:00:00 2001 From: Julian Andres Klode Date: Fri, 10 Feb 2017 22:39:00 +0100 Subject: Do not package names representing .dsc/.deb/... files In the case of build-dep and other commands where a file can be passed we must make sure not to normalize the path name as that can have odd side effects, or well, cause the operation to do nothing. Test for build-dep-file is adjusted to perform the vcard check once as "vcard" and once as "VCard", thus testing that this solves the reported bug. We inline the std::transform() and optimize it a bit to not write anything in the common case (package names are defined to be lowercase, the whole transformation is just for names that should not exist...) to counter the performance hit of the added find() call (it's about 0.15% more instructions than with the existing transform, but we save about 0.67% in writes...). Closes: #854794 (cherry picked from commit 85ee4036c68d8ecd2c973d413a17aca81380900b) (cherry picked from commit 83e6e1a8fc942668f9a01906cb8349fb70a45b3d) --- apt-pkg/deb/deblistparser.cc | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'apt-pkg/deb') diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc index 99e806470..08ab7d92c 100644 --- a/apt-pkg/deb/deblistparser.cc +++ b/apt-pkg/deb/deblistparser.cc @@ -61,8 +61,19 @@ string debListParser::Package() { string Result = Section.Find("Package").to_string(); // Normalize mixed case package names to lower case, like dpkg does - // See Bug#807012 for details - std::transform(Result.begin(), Result.end(), Result.begin(), tolower_ascii); + // See Bug#807012 for details. + // Only do this when the package name does not contain a / - as that + // indicates that the package name was derived from a filename given + // to install or build-dep or similar (Bug#854794) + if (likely(Result.find('/') == string::npos)) + { + for (char &c: Result) + { + char l = tolower_ascii_inline(c); + if (unlikely(l != c)) + c = l; + } + } if(unlikely(Result.empty() == true)) _error->Error("Encountered a section with no Package: header"); -- cgit v1.2.3