https: Quote path in URL before passing it to curl

Curl requires URLs to be urlencoded. We are however giving it
undecoded URLs. This causes it go completely nuts if there is
a space in the URI, producing requests like:

    GET /a file HTTP/1.1

which the servers then interpret as a GET request for "/a" with
HTTP version "file" or some other non-sense.

This works around the issue by encoding the path component of
the URL. I'm not sure if we should encode other parts of the URL
as well, this one seems to do the trick for the actual issue at
hand.

A more correct fix is to avoid the dequoting and (re-)quoting
of URLs when a redirect occurs / a new request is sent. That's
been on the radar for probably a year or two now, but nobody
bothered implementing that yet.

LP: #1651923
(cherry picked from commit 994515e689dcc5f963f5fed58284831750a5da03)

diff --git a/methods/https.cc b/methods/https.cc
index b2d05136cd769ab1d55c7f0d6efe726cf40efcde..e69323ea60d7725170a293f2c98b423309334ef7 100644 (file)
--- a/methods/https.cc
+++ b/methods/https.cc
@@ -269,6 +269,10 @@ bool HttpsMethod::Fetch(FetchItem *Itm)
 
    maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc"));
 
+   // The "+" is encoded as a workaround for a amazon S3 bug
+   // see LP bugs #1003633 and #1086997. (taken from http method)
+   Uri.Path = QuoteString(Uri.Path, "+~ ");
+
    FetchResult Res;
    CURLUserPointer userp(this, &Res, Itm);
    // callbacks

diff --git a/test/integration/test-ubuntu-bug-1651923-requote-https-uri b/test/integration/test-ubuntu-bug-1651923-requote-https-uri
new file mode 100755 (executable)
index 0000000..bedd972
--- /dev/null
+++ b/test/integration/test-ubuntu-bug-1651923-requote-https-uri
@@ -0,0 +1,19 @@
+#!/bin/sh
+set -e
+
+TESTDIR="$(readlink -f "$(dirname "$0")")"
+. "$TESTDIR/framework"
+
+setupenvironment
+configarchitecture "i386"
+
+mkdir "aptarchive/target with space"
+echo 'alright' > "aptarchive/target with space/working"
+changetohttpswebserver
+webserverconfig 'aptwebserver::redirect::replace::/targetwithoutspace/' '/target%20with%20space/'
+webserverconfig 'aptwebserver::redirect::replace::/targetwithoutspace2/' '/target with space/'
+
+testsuccess apthelper download-file -o debug::acquire::http=1 "http://localhost:${APTHTTPPORT}/targetwithoutspace/working" httpfile1
+testsuccess apthelper download-file -o debug::acquire::http=1 "http://localhost:${APTHTTPPORT}/targetwithoutspace2/working" httpfile2
+testsuccess apthelper download-file -o debug::acquire::https=1 "https://localhost:${APTHTTPSPORT}/targetwithoutspace/working" httpsfile1
+testsuccess apthelper download-file -o debug::acquire::https=1 "https://localhost:${APTHTTPSPORT}/targetwithoutspace2/working" httpsfile2