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2021-09-27http: check CURLE_SSL_PINNEDPUBKEYNOTMATCH when emitting errorsLibravatar Ævar Arnfjörð Bjarmason1-1/+2
Change the error shown when a http.pinnedPubKey doesn't match to point the http.pinnedPubKey variable added in aeff8a61216 (http: implement public key pinning, 2016-02-15), e.g.: git -c http.pinnedPubKey=sha256/someNonMatchingKey ls-remote https://github.com/git/git.git fatal: unable to access 'https://github.com/git/git.git/' with http.pinnedPubkey configuration: SSL: public key does not match pinned public key! Before this we'd emit the exact same thing without the " with http.pinnedPubkey configuration". The advantage of doing this is that we're going to get a translated message (everything after the ":" is hardcoded in English in libcurl), and we've got a reference to the git-specific configuration variable that's causing the error. Unfortunately we can't test this easily, as there are no tests that require https:// in the test suite, and t/lib-httpd.sh doesn't know how to set up such tests. See [1] for the start of a discussion about what it would take to have divergent "t/lib-httpd/apache.conf" test setups. #leftoverbits 1. https://lore.kernel.org/git/YUonS1uoZlZEt+Yd@coredump.intra.peff.net/ Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-13http: don't hardcode the value of CURL_SOCKOPT_OKLibravatar Ævar Arnfjörð Bjarmason1-0/+11
Use the new git-curl-compat.h header to define CURL_SOCKOPT_OK to its known value if we're on an older curl version that doesn't have it. It was hardcoded in http.c in a15d069a198 (http: enable keepalive on TCP sockets, 2013-10-12). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-13http: centralize the accounting of libcurl dependenciesLibravatar Ævar Arnfjörð Bjarmason1-0/+117
As discussed in 644de29e220 (http: drop support for curl < 7.19.4, 2021-07-30) checking against LIBCURL_VERSION_NUM isn't as reliable as checking specific symbols present in curl, as some distros have been known to backport features. However, while some of the curl_easy_setopt() arguments we rely on are macros, others are enum, and we can't assume that those that are macros won't change into enums in the future. So we're still going to have to check LIBCURL_VERSION_NUM, but by doing that in one central place and using a macro definition of our own, anyone who's backporting features can define it themselves, and thus have access to more modern curl features that they backported, even if they didn't bump the LIBCURL_VERSION_NUM. More importantly, as shown in a preceding commit doing these version checks makes for hard to read and possibly buggy code, as shown by the bug fixed there where we were conflating base 10 for base 16 when comparing the version. By doing them all in one place we'll hopefully reduce the chances of such future mistakes, furthermore it now becomes easier to see at a glance what the oldest supported version is, which makes it easier to reason about any future deprecation similar to the recent e48a623dea0 (Merge branch 'ab/http-drop-old-curl', 2021-08-24). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>