git/t/t5541-http-push-smart.sh

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test smart http fetch and push The top level directory "/smart/" of the test Apache server is mapped through our git-http-backend CGI, but uses the same underlying repository space as the server's document root. This is the most simple installation possible. Server logs are checked to verify the client has accessed only the smart URLs during the test. During fetch testing the headers are also logged from libcurl to ensure we are making a reasonably sane HTTP request, and getting back reasonably sane response headers from the CGI. When validating the request headers used during smart fetch we munge away the actual Content-Length and replace it with the placeholder "xxx". This avoids unnecessary varability in the test caused by an unrelated change in the requested capabilities in the first want line of the request. However, we still want to look for and verify that Content-Length was used, because smaller payloads should be using Content-Length and not "Transfer-Encoding: chunked". When validating the server response headers we must discard both Content-Length and Transfer-Encoding, as Apache2 can use either format to return our response. During development of this test I observed Apache returning both forms, depending on when the processes got CPU time. If our CGI returned the pack data quickly, Apache just buffered the whole thing and returned a Content-Length. If our CGI took just a bit too long to complete, Apache flushed its buffer and instead used "Transfer-Encoding: chunked". Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-31 00:47:47 +00:00
#!/bin/sh
#
# Copyright (c) 2008 Clemens Buchacher <drizzd@aon.at>
#
test_description='test smart pushing over http via http-backend'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
tests: mark tests relying on the current default for `init.defaultBranch` In addition to the manual adjustment to let the `linux-gcc` CI job run the test suite with `master` and then with `main`, this patch makes sure that GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME is set in all test scripts that currently rely on the initial branch name being `master by default. To determine which test scripts to mark up, the first step was to force-set the default branch name to `master` in - all test scripts that contain the keyword `master`, - t4211, which expects `t/t4211/history.export` with a hard-coded ref to initialize the default branch, - t5560 because it sources `t/t556x_common` which uses `master`, - t8002 and t8012 because both source `t/annotate-tests.sh` which also uses `master`) This trick was performed by this command: $ sed -i '/^ *\. \.\/\(test-lib\|lib-\(bash\|cvs\|git-svn\)\|gitweb-lib\)\.sh$/i\ GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master\ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME\ ' $(git grep -l master t/t[0-9]*.sh) \ t/t4211*.sh t/t5560*.sh t/t8002*.sh t/t8012*.sh After that, careful, manual inspection revealed that some of the test scripts containing the needle `master` do not actually rely on a specific default branch name: either they mention `master` only in a comment, or they initialize that branch specificially, or they do not actually refer to the current default branch. Therefore, the aforementioned modification was undone in those test scripts thusly: $ git checkout HEAD -- \ t/t0027-auto-crlf.sh t/t0060-path-utils.sh \ t/t1011-read-tree-sparse-checkout.sh \ t/t1305-config-include.sh t/t1309-early-config.sh \ t/t1402-check-ref-format.sh t/t1450-fsck.sh \ t/t2024-checkout-dwim.sh \ t/t2106-update-index-assume-unchanged.sh \ t/t3040-subprojects-basic.sh t/t3301-notes.sh \ t/t3308-notes-merge.sh t/t3423-rebase-reword.sh \ t/t3436-rebase-more-options.sh \ t/t4015-diff-whitespace.sh t/t4257-am-interactive.sh \ t/t5323-pack-redundant.sh t/t5401-update-hooks.sh \ t/t5511-refspec.sh t/t5526-fetch-submodules.sh \ t/t5529-push-errors.sh t/t5530-upload-pack-error.sh \ t/t5548-push-porcelain.sh \ t/t5552-skipping-fetch-negotiator.sh \ t/t5572-pull-submodule.sh t/t5608-clone-2gb.sh \ t/t5614-clone-submodules-shallow.sh \ t/t7508-status.sh t/t7606-merge-custom.sh \ t/t9302-fast-import-unpack-limit.sh We excluded one set of test scripts in these commands, though: the range of `git p4` tests. The reason? `git p4` stores the (foreign) remote branch in the branch called `p4/master`, which is obviously not the default branch. Manual analysis revealed that only five of these tests actually require a specific default branch name to pass; They were modified thusly: $ sed -i '/^ *\. \.\/lib-git-p4\.sh$/i\ GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master\ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME\ ' t/t980[0167]*.sh t/t9811*.sh Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-11-18 23:44:19 +00:00
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
test smart http fetch and push The top level directory "/smart/" of the test Apache server is mapped through our git-http-backend CGI, but uses the same underlying repository space as the server's document root. This is the most simple installation possible. Server logs are checked to verify the client has accessed only the smart URLs during the test. During fetch testing the headers are also logged from libcurl to ensure we are making a reasonably sane HTTP request, and getting back reasonably sane response headers from the CGI. When validating the request headers used during smart fetch we munge away the actual Content-Length and replace it with the placeholder "xxx". This avoids unnecessary varability in the test caused by an unrelated change in the requested capabilities in the first want line of the request. However, we still want to look for and verify that Content-Length was used, because smaller payloads should be using Content-Length and not "Transfer-Encoding: chunked". When validating the server response headers we must discard both Content-Length and Transfer-Encoding, as Apache2 can use either format to return our response. During development of this test I observed Apache returning both forms, depending on when the processes got CPU time. If our CGI returned the pack data quickly, Apache just buffered the whole thing and returned a Content-Length. If our CGI took just a bit too long to complete, Apache flushed its buffer and instead used "Transfer-Encoding: chunked". Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-31 00:47:47 +00:00
. ./test-lib.sh
ROOT_PATH="$PWD"
signed push: teach smart-HTTP to pass "git push --signed" around The "--signed" option received by "git push" is first passed to the transport layer, which the native transport directly uses to notice that a push certificate needs to be sent. When the transport-helper is involved, however, the option needs to be told to the helper with set_helper_option(), and the helper needs to take necessary action. For the smart-HTTP helper, the "necessary action" involves spawning the "git send-pack" subprocess with the "--signed" option. Once the above all gets wired in, the smart-HTTP transport now can use the push certificate mechanism to authenticate its pushes. Add a test that is modeled after tests for the native transport in t5534-push-signed.sh to t5541-http-push-smart.sh. Update the test Apache configuration to pass GNUPGHOME environment variable through. As PassEnv would trigger warnings for an environment variable that is not set, export it from test-lib.sh set to a harmless value when GnuPG is not being used in the tests. Note that the added test is deliberately loose and does not check the nonce in this step. This is because the stateless RPC mode is inevitably flaky and a nonce that comes back in the actual push processing is one issued by a different process; if the two interactions with the server crossed a second boundary, the nonces will not match and such a check will fail. A later patch in the series will work around this shortcoming. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-15 21:59:00 +00:00
. "$TEST_DIRECTORY"/lib-gpg.sh
test smart http fetch and push The top level directory "/smart/" of the test Apache server is mapped through our git-http-backend CGI, but uses the same underlying repository space as the server's document root. This is the most simple installation possible. Server logs are checked to verify the client has accessed only the smart URLs during the test. During fetch testing the headers are also logged from libcurl to ensure we are making a reasonably sane HTTP request, and getting back reasonably sane response headers from the CGI. When validating the request headers used during smart fetch we munge away the actual Content-Length and replace it with the placeholder "xxx". This avoids unnecessary varability in the test caused by an unrelated change in the requested capabilities in the first want line of the request. However, we still want to look for and verify that Content-Length was used, because smaller payloads should be using Content-Length and not "Transfer-Encoding: chunked". When validating the server response headers we must discard both Content-Length and Transfer-Encoding, as Apache2 can use either format to return our response. During development of this test I observed Apache returning both forms, depending on when the processes got CPU time. If our CGI returned the pack data quickly, Apache just buffered the whole thing and returned a Content-Length. If our CGI took just a bit too long to complete, Apache flushed its buffer and instead used "Transfer-Encoding: chunked". Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-31 00:47:47 +00:00
. "$TEST_DIRECTORY"/lib-httpd.sh
. "$TEST_DIRECTORY"/lib-terminal.sh
test smart http fetch and push The top level directory "/smart/" of the test Apache server is mapped through our git-http-backend CGI, but uses the same underlying repository space as the server's document root. This is the most simple installation possible. Server logs are checked to verify the client has accessed only the smart URLs during the test. During fetch testing the headers are also logged from libcurl to ensure we are making a reasonably sane HTTP request, and getting back reasonably sane response headers from the CGI. When validating the request headers used during smart fetch we munge away the actual Content-Length and replace it with the placeholder "xxx". This avoids unnecessary varability in the test caused by an unrelated change in the requested capabilities in the first want line of the request. However, we still want to look for and verify that Content-Length was used, because smaller payloads should be using Content-Length and not "Transfer-Encoding: chunked". When validating the server response headers we must discard both Content-Length and Transfer-Encoding, as Apache2 can use either format to return our response. During development of this test I observed Apache returning both forms, depending on when the processes got CPU time. If our CGI returned the pack data quickly, Apache just buffered the whole thing and returned a Content-Length. If our CGI took just a bit too long to complete, Apache flushed its buffer and instead used "Transfer-Encoding: chunked". Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-31 00:47:47 +00:00
start_httpd
test_expect_success 'setup remote repository' '
cd "$ROOT_PATH" &&
mkdir test_repo &&
cd test_repo &&
git init &&
: >path1 &&
git add path1 &&
test_tick &&
git commit -m initial &&
cd - &&
git clone --bare test_repo test_repo.git &&
cd test_repo.git &&
git config http.receivepack true &&
git config core.logallrefupdates true &&
test smart http fetch and push The top level directory "/smart/" of the test Apache server is mapped through our git-http-backend CGI, but uses the same underlying repository space as the server's document root. This is the most simple installation possible. Server logs are checked to verify the client has accessed only the smart URLs during the test. During fetch testing the headers are also logged from libcurl to ensure we are making a reasonably sane HTTP request, and getting back reasonably sane response headers from the CGI. When validating the request headers used during smart fetch we munge away the actual Content-Length and replace it with the placeholder "xxx". This avoids unnecessary varability in the test caused by an unrelated change in the requested capabilities in the first want line of the request. However, we still want to look for and verify that Content-Length was used, because smaller payloads should be using Content-Length and not "Transfer-Encoding: chunked". When validating the server response headers we must discard both Content-Length and Transfer-Encoding, as Apache2 can use either format to return our response. During development of this test I observed Apache returning both forms, depending on when the processes got CPU time. If our CGI returned the pack data quickly, Apache just buffered the whole thing and returned a Content-Length. If our CGI took just a bit too long to complete, Apache flushed its buffer and instead used "Transfer-Encoding: chunked". Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-31 00:47:47 +00:00
ORIG_HEAD=$(git rev-parse --verify HEAD) &&
cd - &&
mv test_repo.git "$HTTPD_DOCUMENT_ROOT_PATH"
'
setup_askpass_helper
test_expect_success 'clone remote repository' '
rm -rf test_repo_clone &&
git clone $HTTPD_URL/smart/test_repo.git test_repo_clone &&
(
cd test_repo_clone && git config push.default matching
)
test smart http fetch and push The top level directory "/smart/" of the test Apache server is mapped through our git-http-backend CGI, but uses the same underlying repository space as the server's document root. This is the most simple installation possible. Server logs are checked to verify the client has accessed only the smart URLs during the test. During fetch testing the headers are also logged from libcurl to ensure we are making a reasonably sane HTTP request, and getting back reasonably sane response headers from the CGI. When validating the request headers used during smart fetch we munge away the actual Content-Length and replace it with the placeholder "xxx". This avoids unnecessary varability in the test caused by an unrelated change in the requested capabilities in the first want line of the request. However, we still want to look for and verify that Content-Length was used, because smaller payloads should be using Content-Length and not "Transfer-Encoding: chunked". When validating the server response headers we must discard both Content-Length and Transfer-Encoding, as Apache2 can use either format to return our response. During development of this test I observed Apache returning both forms, depending on when the processes got CPU time. If our CGI returned the pack data quickly, Apache just buffered the whole thing and returned a Content-Length. If our CGI took just a bit too long to complete, Apache flushed its buffer and instead used "Transfer-Encoding: chunked". Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-31 00:47:47 +00:00
'
test_expect_success 'push to remote repository (standard)' '
2023-02-23 10:49:47 +00:00
# Clear the log, so that the "used receive-pack service" test below
# sees just what we did here.
>"$HTTPD_ROOT_PATH"/access.log &&
test smart http fetch and push The top level directory "/smart/" of the test Apache server is mapped through our git-http-backend CGI, but uses the same underlying repository space as the server's document root. This is the most simple installation possible. Server logs are checked to verify the client has accessed only the smart URLs during the test. During fetch testing the headers are also logged from libcurl to ensure we are making a reasonably sane HTTP request, and getting back reasonably sane response headers from the CGI. When validating the request headers used during smart fetch we munge away the actual Content-Length and replace it with the placeholder "xxx". This avoids unnecessary varability in the test caused by an unrelated change in the requested capabilities in the first want line of the request. However, we still want to look for and verify that Content-Length was used, because smaller payloads should be using Content-Length and not "Transfer-Encoding: chunked". When validating the server response headers we must discard both Content-Length and Transfer-Encoding, as Apache2 can use either format to return our response. During development of this test I observed Apache returning both forms, depending on when the processes got CPU time. If our CGI returned the pack data quickly, Apache just buffered the whole thing and returned a Content-Length. If our CGI took just a bit too long to complete, Apache flushed its buffer and instead used "Transfer-Encoding: chunked". Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-31 00:47:47 +00:00
cd "$ROOT_PATH"/test_repo_clone &&
: >path2 &&
git add path2 &&
test_tick &&
git commit -m path2 &&
HEAD=$(git rev-parse --verify HEAD) &&
GIT_TRACE_CURL=true git push -v -v 2>err &&
! grep "Expect: 100-continue" err &&
grep "POST git-receive-pack ([0-9]* bytes)" err &&
test smart http fetch and push The top level directory "/smart/" of the test Apache server is mapped through our git-http-backend CGI, but uses the same underlying repository space as the server's document root. This is the most simple installation possible. Server logs are checked to verify the client has accessed only the smart URLs during the test. During fetch testing the headers are also logged from libcurl to ensure we are making a reasonably sane HTTP request, and getting back reasonably sane response headers from the CGI. When validating the request headers used during smart fetch we munge away the actual Content-Length and replace it with the placeholder "xxx". This avoids unnecessary varability in the test caused by an unrelated change in the requested capabilities in the first want line of the request. However, we still want to look for and verify that Content-Length was used, because smaller payloads should be using Content-Length and not "Transfer-Encoding: chunked". When validating the server response headers we must discard both Content-Length and Transfer-Encoding, as Apache2 can use either format to return our response. During development of this test I observed Apache returning both forms, depending on when the processes got CPU time. If our CGI returned the pack data quickly, Apache just buffered the whole thing and returned a Content-Length. If our CGI took just a bit too long to complete, Apache flushed its buffer and instead used "Transfer-Encoding: chunked". Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-31 00:47:47 +00:00
(cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
test $HEAD = $(git rev-parse --verify HEAD))
'
2023-02-23 10:49:47 +00:00
test_expect_success 'used receive-pack service' '
cat >exp <<-\EOF &&
GET /smart/test_repo.git/info/refs?service=git-receive-pack HTTP/1.1 200
POST /smart/test_repo.git/git-receive-pack HTTP/1.1 200
EOF
check_access_log exp
2023-02-23 10:49:47 +00:00
'
test_expect_success 'push to remote repository (standard) with sending Accept-Language' '
cat >exp <<-\EOF &&
=> Send header: Accept-Language: ko-KR, *;q=0.9
=> Send header: Accept-Language: ko-KR, *;q=0.9
EOF
cd "$ROOT_PATH"/test_repo_clone &&
: >path_lang &&
git add path_lang &&
test_tick &&
git commit -m path_lang &&
HEAD=$(git rev-parse --verify HEAD) &&
GIT_TRACE_CURL=true LANGUAGE="ko_KR.UTF-8" git push -v -v 2>err &&
! grep "Expect: 100-continue" err &&
grep "=> Send header: Accept-Language:" err >err.language &&
test_cmp exp err.language
'
test smart http fetch and push The top level directory "/smart/" of the test Apache server is mapped through our git-http-backend CGI, but uses the same underlying repository space as the server's document root. This is the most simple installation possible. Server logs are checked to verify the client has accessed only the smart URLs during the test. During fetch testing the headers are also logged from libcurl to ensure we are making a reasonably sane HTTP request, and getting back reasonably sane response headers from the CGI. When validating the request headers used during smart fetch we munge away the actual Content-Length and replace it with the placeholder "xxx". This avoids unnecessary varability in the test caused by an unrelated change in the requested capabilities in the first want line of the request. However, we still want to look for and verify that Content-Length was used, because smaller payloads should be using Content-Length and not "Transfer-Encoding: chunked". When validating the server response headers we must discard both Content-Length and Transfer-Encoding, as Apache2 can use either format to return our response. During development of this test I observed Apache returning both forms, depending on when the processes got CPU time. If our CGI returned the pack data quickly, Apache just buffered the whole thing and returned a Content-Length. If our CGI took just a bit too long to complete, Apache flushed its buffer and instead used "Transfer-Encoding: chunked". Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-31 00:47:47 +00:00
test_expect_success 'push already up-to-date' '
git push
'
test_expect_success 'create and delete remote branch' '
cd "$ROOT_PATH"/test_repo_clone &&
git checkout -b dev &&
: >path3 &&
git add path3 &&
test_tick &&
git commit -m dev &&
git push origin dev &&
git push origin :dev &&
test_must_fail git show-ref --verify refs/remotes/origin/dev
'
test_expect_success 'setup rejected update hook' '
test_hook --setup -C "$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git" update <<-\EOF &&
exit 1
EOF
cat >exp <<-EOF
remote: error: hook declined to update refs/heads/dev2
To http://127.0.0.1:$LIB_HTTPD_PORT/smart/test_repo.git
! [remote rejected] dev2 -> dev2 (hook declined)
error: failed to push some refs to '\''http://127.0.0.1:$LIB_HTTPD_PORT/smart/test_repo.git'\''
EOF
'
test_expect_success 'rejected update prints status' '
cd "$ROOT_PATH"/test_repo_clone &&
git checkout -b dev2 &&
: >path4 &&
git add path4 &&
test_tick &&
git commit -m dev2 &&
test_must_fail git push origin dev2 2>act &&
sed -e "/^remote: /s/ *$//" <act >cmp &&
test_cmp exp cmp
'
rm -f "$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git/hooks/update"
test_http_push_nonff "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git \
"$ROOT_PATH"/test_repo_clone main success
test_expect_success 'push fails for non-fast-forward refs unmatched by remote helper' '
# create a dissimilarly-named remote ref so that git is unable to match the
# two refs (viz. local, remote) unless an explicit refspec is provided.
git push origin main:niam &&
echo "change changed" > path2 &&
git commit -a -m path2 --amend &&
# push main too; this ensures there is at least one '"'push'"' command to
# the remote helper and triggers interaction with the helper.
test_must_fail git push -v origin +main main:niam >output 2>&1'
test_expect_success 'push fails for non-fast-forward refs unmatched by remote helper: remote output' '
grep "^ + [a-f0-9]*\.\.\.[a-f0-9]* *main -> main (forced update)$" output &&
grep "^ ! \[rejected\] *main -> niam (non-fast-forward)$" output
'
test_expect_success 'push fails for non-fast-forward refs unmatched by remote helper: our output' '
test_grep "Updates were rejected because" \
output
'
test_expect_success 'push (chunked)' '
git checkout main &&
test_commit commit path3 &&
HEAD=$(git rev-parse --verify HEAD) &&
test_config http.postbuffer 4 &&
git push -v -v origin $BRANCH 2>err &&
grep "POST git-receive-pack (chunked)" err &&
(cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
test $HEAD = $(git rev-parse --verify HEAD))
'
## References of remote: atomic1(1) main(2) collateral(2) other(2)
## References of local : atomic2(2) main(1) collateral(3) other(2) collateral1(3) atomic(1)
## Atomic push : main(1) collateral(3) atomic(1)
test_expect_success 'push --atomic also prevents branch creation, reports collateral' '
# Setup upstream repo - empty for now
d=$HTTPD_DOCUMENT_ROOT_PATH/atomic-branches.git &&
git init --bare "$d" &&
test_config -C "$d" http.receivepack true &&
up="$HTTPD_URL"/smart/atomic-branches.git &&
remote-curl: pass on atomic capability to remote side When pushing more than one reference with the --atomic option, the server is supposed to perform a single atomic transaction to update the references, leaving them either all to succeed or all to fail. This works fine when pushing locally or over SSH, but when pushing over HTTP, we fail to pass the atomic capability to the remote side. In fact, we have not reported this capability to any remote helpers during the life of the feature. Now normally, things happen to work nevertheless, since we actually check for most types of failures, such as non-fast-forward updates, on the client side, and just abort the entire attempt. However, if the server side reports a problem, such as the inability to lock a ref, the transaction isn't atomic, because we haven't passed the appropriate capability over and the remote side has no way of knowing that we wanted atomic behavior. Fix this by passing the option from the transport code through to remote helpers, and from the HTTP remote helper down to send-pack. With this change, we can detect if the server side rejects the push and report back appropriately. Note the difference in the messages: the remote side reports "atomic transaction failed", while our own checking rejects pushes with the message "atomic push failed". Document the atomic option in the remote helper documentation, so other implementers can implement it if they like. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-16 23:45:34 +00:00
# Tell "$up" about three branches for now
test_commit atomic1 &&
test_commit atomic2 &&
git branch collateral &&
remote-curl: pass on atomic capability to remote side When pushing more than one reference with the --atomic option, the server is supposed to perform a single atomic transaction to update the references, leaving them either all to succeed or all to fail. This works fine when pushing locally or over SSH, but when pushing over HTTP, we fail to pass the atomic capability to the remote side. In fact, we have not reported this capability to any remote helpers during the life of the feature. Now normally, things happen to work nevertheless, since we actually check for most types of failures, such as non-fast-forward updates, on the client side, and just abort the entire attempt. However, if the server side reports a problem, such as the inability to lock a ref, the transaction isn't atomic, because we haven't passed the appropriate capability over and the remote side has no way of knowing that we wanted atomic behavior. Fix this by passing the option from the transport code through to remote helpers, and from the HTTP remote helper down to send-pack. With this change, we can detect if the server side rejects the push and report back appropriately. Note the difference in the messages: the remote side reports "atomic transaction failed", while our own checking rejects pushes with the message "atomic push failed". Document the atomic option in the remote helper documentation, so other implementers can implement it if they like. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-16 23:45:34 +00:00
git branch other &&
git push "$up" atomic1 main collateral other &&
git tag -d atomic1 &&
# collateral is a valid push, but should be failed by atomic push
git checkout collateral &&
test_commit collateral1 &&
# Make main incompatible with upstream to provoke atomic
git checkout main &&
git reset --hard HEAD^ &&
# Add a new branch which should be failed by atomic push. This is a
# regression case.
git branch atomic &&
# --atomic should cause entire push to be rejected
test_must_fail git push --atomic "$up" main atomic collateral 2>output &&
# the new branch should not have been created upstream
test_must_fail git -C "$d" show-ref --verify refs/heads/atomic &&
# upstream should still reflect atomic2, the last thing we pushed
# successfully
git rev-parse atomic2 >expected &&
# on main...
git -C "$d" rev-parse refs/heads/main >actual &&
test_cmp expected actual &&
# ...and collateral.
git -C "$d" rev-parse refs/heads/collateral >actual &&
test_cmp expected actual &&
# the failed refs should be indicated to the user
grep "^ ! .*rejected.* main -> main" output &&
# the collateral failure refs should be indicated to the user
grep "^ ! .*rejected.* atomic -> atomic .*atomic push failed" output &&
grep "^ ! .*rejected.* collateral -> collateral .*atomic push failed" output &&
# never report what we do not push
! grep "^ ! .*rejected.* atomic1 " output &&
! grep "^ ! .*rejected.* other " output
'
remote-curl: pass on atomic capability to remote side When pushing more than one reference with the --atomic option, the server is supposed to perform a single atomic transaction to update the references, leaving them either all to succeed or all to fail. This works fine when pushing locally or over SSH, but when pushing over HTTP, we fail to pass the atomic capability to the remote side. In fact, we have not reported this capability to any remote helpers during the life of the feature. Now normally, things happen to work nevertheless, since we actually check for most types of failures, such as non-fast-forward updates, on the client side, and just abort the entire attempt. However, if the server side reports a problem, such as the inability to lock a ref, the transaction isn't atomic, because we haven't passed the appropriate capability over and the remote side has no way of knowing that we wanted atomic behavior. Fix this by passing the option from the transport code through to remote helpers, and from the HTTP remote helper down to send-pack. With this change, we can detect if the server side rejects the push and report back appropriately. Note the difference in the messages: the remote side reports "atomic transaction failed", while our own checking rejects pushes with the message "atomic push failed". Document the atomic option in the remote helper documentation, so other implementers can implement it if they like. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-16 23:45:34 +00:00
test_expect_success 'push --atomic fails on server-side errors' '
# Use previously set up repository
d=$HTTPD_DOCUMENT_ROOT_PATH/atomic-branches.git &&
test_config -C "$d" http.receivepack true &&
up="$HTTPD_URL"/smart/atomic-branches.git &&
# Create d/f conflict to break ref updates for other on the remote site.
git -C "$d" update-ref -d refs/heads/other &&
git -C "$d" update-ref refs/heads/other/conflict HEAD &&
remote-curl: pass on atomic capability to remote side When pushing more than one reference with the --atomic option, the server is supposed to perform a single atomic transaction to update the references, leaving them either all to succeed or all to fail. This works fine when pushing locally or over SSH, but when pushing over HTTP, we fail to pass the atomic capability to the remote side. In fact, we have not reported this capability to any remote helpers during the life of the feature. Now normally, things happen to work nevertheless, since we actually check for most types of failures, such as non-fast-forward updates, on the client side, and just abort the entire attempt. However, if the server side reports a problem, such as the inability to lock a ref, the transaction isn't atomic, because we haven't passed the appropriate capability over and the remote side has no way of knowing that we wanted atomic behavior. Fix this by passing the option from the transport code through to remote helpers, and from the HTTP remote helper down to send-pack. With this change, we can detect if the server side rejects the push and report back appropriately. Note the difference in the messages: the remote side reports "atomic transaction failed", while our own checking rejects pushes with the message "atomic push failed". Document the atomic option in the remote helper documentation, so other implementers can implement it if they like. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-16 23:45:34 +00:00
# add the new commit to other
git branch -f other collateral &&
# --atomic should cause entire push to be rejected
test_must_fail git push --atomic "$up" atomic other 2>output &&
# The atomic and other branches should not be created upstream.
remote-curl: pass on atomic capability to remote side When pushing more than one reference with the --atomic option, the server is supposed to perform a single atomic transaction to update the references, leaving them either all to succeed or all to fail. This works fine when pushing locally or over SSH, but when pushing over HTTP, we fail to pass the atomic capability to the remote side. In fact, we have not reported this capability to any remote helpers during the life of the feature. Now normally, things happen to work nevertheless, since we actually check for most types of failures, such as non-fast-forward updates, on the client side, and just abort the entire attempt. However, if the server side reports a problem, such as the inability to lock a ref, the transaction isn't atomic, because we haven't passed the appropriate capability over and the remote side has no way of knowing that we wanted atomic behavior. Fix this by passing the option from the transport code through to remote helpers, and from the HTTP remote helper down to send-pack. With this change, we can detect if the server side rejects the push and report back appropriately. Note the difference in the messages: the remote side reports "atomic transaction failed", while our own checking rejects pushes with the message "atomic push failed". Document the atomic option in the remote helper documentation, so other implementers can implement it if they like. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-16 23:45:34 +00:00
test_must_fail git -C "$d" show-ref --verify refs/heads/atomic &&
test_must_fail git -C "$d" show-ref --verify refs/heads/other &&
remote-curl: pass on atomic capability to remote side When pushing more than one reference with the --atomic option, the server is supposed to perform a single atomic transaction to update the references, leaving them either all to succeed or all to fail. This works fine when pushing locally or over SSH, but when pushing over HTTP, we fail to pass the atomic capability to the remote side. In fact, we have not reported this capability to any remote helpers during the life of the feature. Now normally, things happen to work nevertheless, since we actually check for most types of failures, such as non-fast-forward updates, on the client side, and just abort the entire attempt. However, if the server side reports a problem, such as the inability to lock a ref, the transaction isn't atomic, because we haven't passed the appropriate capability over and the remote side has no way of knowing that we wanted atomic behavior. Fix this by passing the option from the transport code through to remote helpers, and from the HTTP remote helper down to send-pack. With this change, we can detect if the server side rejects the push and report back appropriately. Note the difference in the messages: the remote side reports "atomic transaction failed", while our own checking rejects pushes with the message "atomic push failed". Document the atomic option in the remote helper documentation, so other implementers can implement it if they like. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-16 23:45:34 +00:00
# the failed refs should be indicated to the user
grep "^ ! .*rejected.* other -> other .*atomic transaction failed" output &&
# the collateral failure refs should be indicated to the user
grep "^ ! .*rejected.* atomic -> atomic .*atomic transaction failed" output
'
remote-curl: don't pass back fake refs When receive-pack advertises its list of refs, it generally hides the capabilities information after a NUL at the end of the first ref. However, when we have an empty repository, there are no refs, and therefore receive-pack writes a fake ref "capabilities^{}" with the capabilities afterwards. On the client side, git reads the result with get_remote_heads(). We pick the capabilities from the end of the line, and then call check_ref() to make sure the ref name is valid. We see that it isn't, and don't bother adding it to our list of refs. However, the call to check_ref() is enabled by passing the REF_NORMAL flag to get_remote_heads. For the regular git transport, we pass REF_NORMAL in get_refs_via_connect() if we are doing a push (since only receive-pack uses this fake ref). But in remote-curl, we never use this flag, and we accept the fake ref as a real one, passing it back from the helper to the parent git-push. Most of the time this bug goes unnoticed, as the fake ref won't match our refspecs. However, if "--mirror" is used, then we see it as remote cruft to be pruned, and try to pass along a deletion refspec for it. Of course this refspec has bogus syntax (because of the ^{}), and the helper complains, aborting the push. Let's have remote-curl mirror what the builtin get_refs_via_connect() does (at least for the case of using git protocol; we can leave the dumb info/refs reader as it is). This also fixes pushing with --mirror to a smart-http remote that uses alternates. The fake ".have" refs the server gives to avoid unnecessary network transfer has a similar bad interactions with the machinery. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-17 10:45:39 +00:00
test_expect_success 'push --all can push to empty repo' '
d=$HTTPD_DOCUMENT_ROOT_PATH/empty-all.git &&
git init --bare "$d" &&
git --git-dir="$d" config http.receivepack true &&
git push --all "$HTTPD_URL"/smart/empty-all.git
'
test_expect_success 'push --mirror can push to empty repo' '
d=$HTTPD_DOCUMENT_ROOT_PATH/empty-mirror.git &&
git init --bare "$d" &&
git --git-dir="$d" config http.receivepack true &&
git push --mirror "$HTTPD_URL"/smart/empty-mirror.git
'
test_expect_success 'push --all to repo with alternates' '
s=$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git &&
d=$HTTPD_DOCUMENT_ROOT_PATH/alternates-all.git &&
git clone --bare --shared "$s" "$d" &&
git --git-dir="$d" config http.receivepack true &&
git --git-dir="$d" repack -adl &&
git push --all "$HTTPD_URL"/smart/alternates-all.git
'
test_expect_success 'push --mirror to repo with alternates' '
s=$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git &&
d=$HTTPD_DOCUMENT_ROOT_PATH/alternates-mirror.git &&
git clone --bare --shared "$s" "$d" &&
git --git-dir="$d" config http.receivepack true &&
git --git-dir="$d" repack -adl &&
git push --mirror "$HTTPD_URL"/smart/alternates-mirror.git
'
test_expect_success TTY 'push shows progress when stderr is a tty' '
cd "$ROOT_PATH"/test_repo_clone &&
test_commit noisy &&
test_terminal git push >output 2>&1 &&
test_grep "^Writing objects" output
'
test_expect_success TTY 'push --quiet silences status and progress' '
cd "$ROOT_PATH"/test_repo_clone &&
test_commit quiet &&
test_terminal git push --quiet >output 2>&1 &&
test_must_be_empty output
'
test_expect_success TTY 'push --no-progress silences progress but not status' '
cd "$ROOT_PATH"/test_repo_clone &&
test_commit no-progress &&
test_terminal git push --no-progress >output 2>&1 &&
test_grep "^To http" output &&
test_grep ! "^Writing objects" output
'
test_expect_success 'push --progress shows progress to non-tty' '
cd "$ROOT_PATH"/test_repo_clone &&
test_commit progress &&
git push --progress >output 2>&1 &&
test_grep "^To http" output &&
test_grep "^Writing objects" output
'
test_expect_success 'http push gives sane defaults to reflog' '
cd "$ROOT_PATH"/test_repo_clone &&
test_commit reflog-test &&
git push "$HTTPD_URL"/smart/test_repo.git &&
git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git" \
log -g -1 --format="%gn <%ge>" >actual &&
echo "anonymous <anonymous@http.127.0.0.1>" >expect &&
test_cmp expect actual
'
test_expect_success 'http push respects GIT_COMMITTER_* in reflog' '
cd "$ROOT_PATH"/test_repo_clone &&
test_commit custom-reflog-test &&
git push "$HTTPD_URL"/smart_custom_env/test_repo.git &&
git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git" \
log -g -1 --format="%gn <%ge>" >actual &&
echo "Custom User <custom@example.com>" >expect &&
test_cmp expect actual
'
test_expect_success 'push over smart http with auth' '
cd "$ROOT_PATH/test_repo_clone" &&
echo push-auth-test >expect &&
test_commit push-auth-test &&
set_askpass user@host pass@host &&
git push "$HTTPD_URL"/auth/smart/test_repo.git &&
git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git" \
log -1 --format=%s >actual &&
expect_askpass both user@host &&
test_cmp expect actual
'
http: prompt for credentials on failed POST All of the smart-http GET requests go through the http_get_* functions, which will prompt for credentials and retry if we see an HTTP 401. POST requests, however, do not go through any central point. Moreover, it is difficult to retry in the general case; we cannot assume the request body fits in memory or is even seekable, and we don't know how much of it was consumed during the attempt. Most of the time, this is not a big deal; for both fetching and pushing, we make a GET request before doing any POSTs, so typically we figure out the credentials during the first request, then reuse them during the POST. However, some servers may allow a client to get the list of refs from receive-pack without authentication, and then require authentication when the client actually tries to POST the pack. This is not ideal, as the client may do a non-trivial amount of work to generate the pack (e.g., delta-compressing objects). However, for a long time it has been the recommended example configuration in git-http-backend(1) for setting up a repository with anonymous fetch and authenticated push. This setup has always been broken without putting a username into the URL. Prior to commit 986bbc0, it did work with a username in the URL, because git would prompt for credentials before making any requests at all. However, post-986bbc0, it is totally broken. Since it has been advertised in the manpage for some time, we should make sure it works. Unfortunately, it is not as easy as simply calling post_rpc again when it fails, due to the input issue mentioned above. However, we can still make this specific case work by retrying in two specific instances: 1. If the request is large (bigger than LARGE_PACKET_MAX), we will first send a probe request with a single flush packet. Since this request is static, we can freely retry it. 2. If the request is small and we are not using gzip, then we have the whole thing in-core, and we can freely retry. That means we will not retry in some instances, including: 1. If we are using gzip. However, we only do so when calling git-upload-pack, so it does not apply to pushes. 2. If we have a large request, the probe succeeds, but then the real POST wants authentication. This is an extremely unlikely configuration and not worth worrying about. While it might be nice to cover those instances, doing so would be significantly more complex for very little real-world gain. In the long run, we will be much better off when curl learns to internally handle authentication as a callback, and we can cleanly handle all cases that way. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-08-27 13:27:15 +00:00
test_expect_success 'push to auth-only-for-push repo' '
cd "$ROOT_PATH/test_repo_clone" &&
echo push-half-auth >expect &&
test_commit push-half-auth &&
set_askpass user@host pass@host &&
git push "$HTTPD_URL"/auth-push/smart/test_repo.git &&
git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git" \
log -1 --format=%s >actual &&
expect_askpass both user@host &&
test_cmp expect actual
'
test_expect_success 'create repo without http.receivepack set' '
cd "$ROOT_PATH" &&
git init half-auth &&
(
cd half-auth &&
test_commit one
) &&
git clone --bare half-auth "$HTTPD_DOCUMENT_ROOT_PATH/half-auth.git"
'
test_expect_success 'clone via half-auth-complete does not need password' '
cd "$ROOT_PATH" &&
set_askpass wrong &&
git clone "$HTTPD_URL"/half-auth-complete/smart/half-auth.git \
half-auth-clone &&
expect_askpass none
'
test_expect_success 'push into half-auth-complete requires password' '
cd "$ROOT_PATH/half-auth-clone" &&
echo two >expect &&
test_commit two &&
set_askpass user@host pass@host &&
git push "$HTTPD_URL/half-auth-complete/smart/half-auth.git" &&
git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/half-auth.git" \
log -1 --format=%s >actual &&
expect_askpass both user@host &&
test_cmp expect actual
'
test_expect_success CMDLINE_LIMIT 'push 2000 tags over http' '
sha1=$(git rev-parse HEAD) &&
test_seq 2000 |
sort |
sed "s|.*|$sha1 refs/tags/really-long-tag-name-&|" \
>.git/packed-refs &&
run_with_limited_cmdline git push --mirror
'
signed push: teach smart-HTTP to pass "git push --signed" around The "--signed" option received by "git push" is first passed to the transport layer, which the native transport directly uses to notice that a push certificate needs to be sent. When the transport-helper is involved, however, the option needs to be told to the helper with set_helper_option(), and the helper needs to take necessary action. For the smart-HTTP helper, the "necessary action" involves spawning the "git send-pack" subprocess with the "--signed" option. Once the above all gets wired in, the smart-HTTP transport now can use the push certificate mechanism to authenticate its pushes. Add a test that is modeled after tests for the native transport in t5534-push-signed.sh to t5541-http-push-smart.sh. Update the test Apache configuration to pass GNUPGHOME environment variable through. As PassEnv would trigger warnings for an environment variable that is not set, export it from test-lib.sh set to a harmless value when GnuPG is not being used in the tests. Note that the added test is deliberately loose and does not check the nonce in this step. This is because the stateless RPC mode is inevitably flaky and a nonce that comes back in the actual push processing is one issued by a different process; if the two interactions with the server crossed a second boundary, the nonces will not match and such a check will fail. A later patch in the series will work around this shortcoming. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-15 21:59:00 +00:00
test_expect_success GPG 'push with post-receive to inspect certificate' '
test_hook -C "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git post-receive <<-\EOF &&
signed push: teach smart-HTTP to pass "git push --signed" around The "--signed" option received by "git push" is first passed to the transport layer, which the native transport directly uses to notice that a push certificate needs to be sent. When the transport-helper is involved, however, the option needs to be told to the helper with set_helper_option(), and the helper needs to take necessary action. For the smart-HTTP helper, the "necessary action" involves spawning the "git send-pack" subprocess with the "--signed" option. Once the above all gets wired in, the smart-HTTP transport now can use the push certificate mechanism to authenticate its pushes. Add a test that is modeled after tests for the native transport in t5534-push-signed.sh to t5541-http-push-smart.sh. Update the test Apache configuration to pass GNUPGHOME environment variable through. As PassEnv would trigger warnings for an environment variable that is not set, export it from test-lib.sh set to a harmless value when GnuPG is not being used in the tests. Note that the added test is deliberately loose and does not check the nonce in this step. This is because the stateless RPC mode is inevitably flaky and a nonce that comes back in the actual push processing is one issued by a different process; if the two interactions with the server crossed a second boundary, the nonces will not match and such a check will fail. A later patch in the series will work around this shortcoming. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-15 21:59:00 +00:00
# discard the update list
cat >/dev/null
# record the push certificate
if test -n "${GIT_PUSH_CERT-}"
then
git cat-file blob $GIT_PUSH_CERT >../push-cert
fi &&
cat >../push-cert-status <<E_O_F
SIGNER=${GIT_PUSH_CERT_SIGNER-nobody}
KEY=${GIT_PUSH_CERT_KEY-nokey}
STATUS=${GIT_PUSH_CERT_STATUS-nostatus}
signed push: allow stale nonce in stateless mode When operating with the stateless RPC mode, we will receive a nonce issued by another instance of us that advertised our capability and refs some time ago. Update the logic to check received nonce to detect this case, compute how much time has passed since the nonce was issued and report the status with a new environment variable GIT_PUSH_CERT_NONCE_SLOP to the hooks. GIT_PUSH_CERT_NONCE_STATUS will report "SLOP" in such a case. The hooks are free to decide how large a slop it is willing to accept. Strictly speaking, the "nonce" is not really a "nonce" anymore in the stateless RPC mode, as it will happily take any "nonce" issued by it (which is protected by HMAC and its secret key) as long as it is fresh enough. The degree of this security degradation, relative to the native protocol, is about the same as the "we make sure that the 'git push' decided to update our refs with new objects based on the freshest observation of our refs by making sure the values they claim the original value of the refs they ask us to update exactly match the current state" security is loosened to accomodate the stateless RPC mode in the existing code without this series, so there is no need for those who are already using smart HTTP to push to their repositories to be alarmed any more than they already are. In addition, the server operator can set receive.certnonceslop configuration variable to specify how stale a nonce can be (in seconds). When this variable is set, and if the nonce received in the certificate that passes the HMAC check was less than that many seconds old, hooks are given "OK" in GIT_PUSH_CERT_NONCE_STATUS (instead of "SLOP") and the received nonce value is given in GIT_PUSH_CERT_NONCE, which makes it easier for a simple-minded hook to check if the certificate we received is recent enough. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-05 17:46:04 +00:00
NONCE_STATUS=${GIT_PUSH_CERT_NONCE_STATUS-nononcestatus}
NONCE=${GIT_PUSH_CERT_NONCE-nononce}
signed push: teach smart-HTTP to pass "git push --signed" around The "--signed" option received by "git push" is first passed to the transport layer, which the native transport directly uses to notice that a push certificate needs to be sent. When the transport-helper is involved, however, the option needs to be told to the helper with set_helper_option(), and the helper needs to take necessary action. For the smart-HTTP helper, the "necessary action" involves spawning the "git send-pack" subprocess with the "--signed" option. Once the above all gets wired in, the smart-HTTP transport now can use the push certificate mechanism to authenticate its pushes. Add a test that is modeled after tests for the native transport in t5534-push-signed.sh to t5541-http-push-smart.sh. Update the test Apache configuration to pass GNUPGHOME environment variable through. As PassEnv would trigger warnings for an environment variable that is not set, export it from test-lib.sh set to a harmless value when GnuPG is not being used in the tests. Note that the added test is deliberately loose and does not check the nonce in this step. This is because the stateless RPC mode is inevitably flaky and a nonce that comes back in the actual push processing is one issued by a different process; if the two interactions with the server crossed a second boundary, the nonces will not match and such a check will fail. A later patch in the series will work around this shortcoming. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-15 21:59:00 +00:00
E_O_F
EOF
(
cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
signed push: allow stale nonce in stateless mode When operating with the stateless RPC mode, we will receive a nonce issued by another instance of us that advertised our capability and refs some time ago. Update the logic to check received nonce to detect this case, compute how much time has passed since the nonce was issued and report the status with a new environment variable GIT_PUSH_CERT_NONCE_SLOP to the hooks. GIT_PUSH_CERT_NONCE_STATUS will report "SLOP" in such a case. The hooks are free to decide how large a slop it is willing to accept. Strictly speaking, the "nonce" is not really a "nonce" anymore in the stateless RPC mode, as it will happily take any "nonce" issued by it (which is protected by HMAC and its secret key) as long as it is fresh enough. The degree of this security degradation, relative to the native protocol, is about the same as the "we make sure that the 'git push' decided to update our refs with new objects based on the freshest observation of our refs by making sure the values they claim the original value of the refs they ask us to update exactly match the current state" security is loosened to accomodate the stateless RPC mode in the existing code without this series, so there is no need for those who are already using smart HTTP to push to their repositories to be alarmed any more than they already are. In addition, the server operator can set receive.certnonceslop configuration variable to specify how stale a nonce can be (in seconds). When this variable is set, and if the nonce received in the certificate that passes the HMAC check was less than that many seconds old, hooks are given "OK" in GIT_PUSH_CERT_NONCE_STATUS (instead of "SLOP") and the received nonce value is given in GIT_PUSH_CERT_NONCE, which makes it easier for a simple-minded hook to check if the certificate we received is recent enough. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-05 17:46:04 +00:00
git config receive.certnonceseed sekrit &&
git config receive.certnonceslop 30
signed push: teach smart-HTTP to pass "git push --signed" around The "--signed" option received by "git push" is first passed to the transport layer, which the native transport directly uses to notice that a push certificate needs to be sent. When the transport-helper is involved, however, the option needs to be told to the helper with set_helper_option(), and the helper needs to take necessary action. For the smart-HTTP helper, the "necessary action" involves spawning the "git send-pack" subprocess with the "--signed" option. Once the above all gets wired in, the smart-HTTP transport now can use the push certificate mechanism to authenticate its pushes. Add a test that is modeled after tests for the native transport in t5534-push-signed.sh to t5541-http-push-smart.sh. Update the test Apache configuration to pass GNUPGHOME environment variable through. As PassEnv would trigger warnings for an environment variable that is not set, export it from test-lib.sh set to a harmless value when GnuPG is not being used in the tests. Note that the added test is deliberately loose and does not check the nonce in this step. This is because the stateless RPC mode is inevitably flaky and a nonce that comes back in the actual push processing is one issued by a different process; if the two interactions with the server crossed a second boundary, the nonces will not match and such a check will fail. A later patch in the series will work around this shortcoming. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-15 21:59:00 +00:00
) &&
cd "$ROOT_PATH/test_repo_clone" &&
test_commit cert-test &&
git push --signed "$HTTPD_URL/smart/test_repo.git" &&
(
cd "$HTTPD_DOCUMENT_ROOT_PATH" &&
signed push: allow stale nonce in stateless mode When operating with the stateless RPC mode, we will receive a nonce issued by another instance of us that advertised our capability and refs some time ago. Update the logic to check received nonce to detect this case, compute how much time has passed since the nonce was issued and report the status with a new environment variable GIT_PUSH_CERT_NONCE_SLOP to the hooks. GIT_PUSH_CERT_NONCE_STATUS will report "SLOP" in such a case. The hooks are free to decide how large a slop it is willing to accept. Strictly speaking, the "nonce" is not really a "nonce" anymore in the stateless RPC mode, as it will happily take any "nonce" issued by it (which is protected by HMAC and its secret key) as long as it is fresh enough. The degree of this security degradation, relative to the native protocol, is about the same as the "we make sure that the 'git push' decided to update our refs with new objects based on the freshest observation of our refs by making sure the values they claim the original value of the refs they ask us to update exactly match the current state" security is loosened to accomodate the stateless RPC mode in the existing code without this series, so there is no need for those who are already using smart HTTP to push to their repositories to be alarmed any more than they already are. In addition, the server operator can set receive.certnonceslop configuration variable to specify how stale a nonce can be (in seconds). When this variable is set, and if the nonce received in the certificate that passes the HMAC check was less than that many seconds old, hooks are given "OK" in GIT_PUSH_CERT_NONCE_STATUS (instead of "SLOP") and the received nonce value is given in GIT_PUSH_CERT_NONCE, which makes it easier for a simple-minded hook to check if the certificate we received is recent enough. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-05 17:46:04 +00:00
cat <<-\EOF &&
signed push: teach smart-HTTP to pass "git push --signed" around The "--signed" option received by "git push" is first passed to the transport layer, which the native transport directly uses to notice that a push certificate needs to be sent. When the transport-helper is involved, however, the option needs to be told to the helper with set_helper_option(), and the helper needs to take necessary action. For the smart-HTTP helper, the "necessary action" involves spawning the "git send-pack" subprocess with the "--signed" option. Once the above all gets wired in, the smart-HTTP transport now can use the push certificate mechanism to authenticate its pushes. Add a test that is modeled after tests for the native transport in t5534-push-signed.sh to t5541-http-push-smart.sh. Update the test Apache configuration to pass GNUPGHOME environment variable through. As PassEnv would trigger warnings for an environment variable that is not set, export it from test-lib.sh set to a harmless value when GnuPG is not being used in the tests. Note that the added test is deliberately loose and does not check the nonce in this step. This is because the stateless RPC mode is inevitably flaky and a nonce that comes back in the actual push processing is one issued by a different process; if the two interactions with the server crossed a second boundary, the nonces will not match and such a check will fail. A later patch in the series will work around this shortcoming. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-15 21:59:00 +00:00
SIGNER=C O Mitter <committer@example.com>
KEY=13B6F51ECDDE430D
STATUS=G
signed push: allow stale nonce in stateless mode When operating with the stateless RPC mode, we will receive a nonce issued by another instance of us that advertised our capability and refs some time ago. Update the logic to check received nonce to detect this case, compute how much time has passed since the nonce was issued and report the status with a new environment variable GIT_PUSH_CERT_NONCE_SLOP to the hooks. GIT_PUSH_CERT_NONCE_STATUS will report "SLOP" in such a case. The hooks are free to decide how large a slop it is willing to accept. Strictly speaking, the "nonce" is not really a "nonce" anymore in the stateless RPC mode, as it will happily take any "nonce" issued by it (which is protected by HMAC and its secret key) as long as it is fresh enough. The degree of this security degradation, relative to the native protocol, is about the same as the "we make sure that the 'git push' decided to update our refs with new objects based on the freshest observation of our refs by making sure the values they claim the original value of the refs they ask us to update exactly match the current state" security is loosened to accomodate the stateless RPC mode in the existing code without this series, so there is no need for those who are already using smart HTTP to push to their repositories to be alarmed any more than they already are. In addition, the server operator can set receive.certnonceslop configuration variable to specify how stale a nonce can be (in seconds). When this variable is set, and if the nonce received in the certificate that passes the HMAC check was less than that many seconds old, hooks are given "OK" in GIT_PUSH_CERT_NONCE_STATUS (instead of "SLOP") and the received nonce value is given in GIT_PUSH_CERT_NONCE, which makes it easier for a simple-minded hook to check if the certificate we received is recent enough. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-05 17:46:04 +00:00
NONCE_STATUS=OK
signed push: teach smart-HTTP to pass "git push --signed" around The "--signed" option received by "git push" is first passed to the transport layer, which the native transport directly uses to notice that a push certificate needs to be sent. When the transport-helper is involved, however, the option needs to be told to the helper with set_helper_option(), and the helper needs to take necessary action. For the smart-HTTP helper, the "necessary action" involves spawning the "git send-pack" subprocess with the "--signed" option. Once the above all gets wired in, the smart-HTTP transport now can use the push certificate mechanism to authenticate its pushes. Add a test that is modeled after tests for the native transport in t5534-push-signed.sh to t5541-http-push-smart.sh. Update the test Apache configuration to pass GNUPGHOME environment variable through. As PassEnv would trigger warnings for an environment variable that is not set, export it from test-lib.sh set to a harmless value when GnuPG is not being used in the tests. Note that the added test is deliberately loose and does not check the nonce in this step. This is because the stateless RPC mode is inevitably flaky and a nonce that comes back in the actual push processing is one issued by a different process; if the two interactions with the server crossed a second boundary, the nonces will not match and such a check will fail. A later patch in the series will work around this shortcoming. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-15 21:59:00 +00:00
EOF
signed push: allow stale nonce in stateless mode When operating with the stateless RPC mode, we will receive a nonce issued by another instance of us that advertised our capability and refs some time ago. Update the logic to check received nonce to detect this case, compute how much time has passed since the nonce was issued and report the status with a new environment variable GIT_PUSH_CERT_NONCE_SLOP to the hooks. GIT_PUSH_CERT_NONCE_STATUS will report "SLOP" in such a case. The hooks are free to decide how large a slop it is willing to accept. Strictly speaking, the "nonce" is not really a "nonce" anymore in the stateless RPC mode, as it will happily take any "nonce" issued by it (which is protected by HMAC and its secret key) as long as it is fresh enough. The degree of this security degradation, relative to the native protocol, is about the same as the "we make sure that the 'git push' decided to update our refs with new objects based on the freshest observation of our refs by making sure the values they claim the original value of the refs they ask us to update exactly match the current state" security is loosened to accomodate the stateless RPC mode in the existing code without this series, so there is no need for those who are already using smart HTTP to push to their repositories to be alarmed any more than they already are. In addition, the server operator can set receive.certnonceslop configuration variable to specify how stale a nonce can be (in seconds). When this variable is set, and if the nonce received in the certificate that passes the HMAC check was less than that many seconds old, hooks are given "OK" in GIT_PUSH_CERT_NONCE_STATUS (instead of "SLOP") and the received nonce value is given in GIT_PUSH_CERT_NONCE, which makes it easier for a simple-minded hook to check if the certificate we received is recent enough. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-05 17:46:04 +00:00
sed -n -e "s/^nonce /NONCE=/p" -e "/^$/q" push-cert
signed push: teach smart-HTTP to pass "git push --signed" around The "--signed" option received by "git push" is first passed to the transport layer, which the native transport directly uses to notice that a push certificate needs to be sent. When the transport-helper is involved, however, the option needs to be told to the helper with set_helper_option(), and the helper needs to take necessary action. For the smart-HTTP helper, the "necessary action" involves spawning the "git send-pack" subprocess with the "--signed" option. Once the above all gets wired in, the smart-HTTP transport now can use the push certificate mechanism to authenticate its pushes. Add a test that is modeled after tests for the native transport in t5534-push-signed.sh to t5541-http-push-smart.sh. Update the test Apache configuration to pass GNUPGHOME environment variable through. As PassEnv would trigger warnings for an environment variable that is not set, export it from test-lib.sh set to a harmless value when GnuPG is not being used in the tests. Note that the added test is deliberately loose and does not check the nonce in this step. This is because the stateless RPC mode is inevitably flaky and a nonce that comes back in the actual push processing is one issued by a different process; if the two interactions with the server crossed a second boundary, the nonces will not match and such a check will fail. A later patch in the series will work around this shortcoming. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-15 21:59:00 +00:00
) >expect &&
test_cmp expect "$HTTPD_DOCUMENT_ROOT_PATH/push-cert-status"
'
test_expect_success 'push status output scrubs password' '
cd "$ROOT_PATH/test_repo_clone" &&
git push --porcelain \
"$HTTPD_URL_USER_PASS/smart/test_repo.git" \
+HEAD:scrub >status &&
# should have been scrubbed down to vanilla URL
grep "^To $HTTPD_URL/smart/test_repo.git" status
'
test_expect_success 'clone/fetch scrubs password from reflogs' '
cd "$ROOT_PATH" &&
git clone "$HTTPD_URL_USER_PASS/smart/test_repo.git" \
reflog-test &&
cd reflog-test &&
test_commit prepare-for-force-fetch &&
git switch -c away &&
git fetch "$HTTPD_URL_USER_PASS/smart/test_repo.git" \
+main:main &&
# should have been scrubbed down to vanilla URL
git log -g main >reflog &&
grep "$HTTPD_URL" reflog &&
! grep "$HTTPD_URL_USER_PASS" reflog
'
remote-curl: make --force-with-lease work with non-ASCII ref names When we invoke a remote transport helper and pass an option with an argument, we quote the argument as a C-style string if necessary. This is the case for the cas option, which implements the --force-with-lease command-line flag, when we're passing a non-ASCII refname. However, the remote curl helper isn't designed to parse such an argument, meaning that if we try to use --force-with-lease with an HTTP push and a non-ASCII refname, we get an error like this: error: cannot parse expected object name '0000000000000000000000000000000000000000"' Note the double quote, which get_oid has reminded us is not valid in an hex object ID. Even if we had been able to parse it, we would send the wrong data to the server: we'd send an escaped ref, which would not behave as the user wanted and might accidentally result in updating or deleting a ref we hadn't intended. Since we need to expect a quoted C-style string here, just check if the first argument is a double quote, and if so, unquote it. Note that if the refname contains a double quote, then we will have double-quoted it already, so there is no ambiguity. We test for this case only in the smart protocol, since the DAV-based protocol is not capable of handling this capability. We use UTF-8 because this is nicer in our tests and friendlier to Windows, but the code should work for all non-ASCII refs. While we're at it, since the name of the option is now well established and isn't going to change, let's inline it instead of using the #define constant. Reported-by: Frej Bjon <frej.bjon@nemit.fi> Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-21 01:15:11 +00:00
test_expect_success 'Non-ASCII branch name can be used with --force-with-lease' '
cd "$ROOT_PATH" &&
git clone "$HTTPD_URL_USER_PASS/smart/test_repo.git" non-ascii &&
cd non-ascii &&
git checkout -b rama-de-árbol &&
test_commit F &&
git push --force-with-lease origin rama-de-árbol &&
git ls-remote origin refs/heads/rama-de-árbol >actual &&
git ls-remote . refs/heads/rama-de-árbol >expect &&
test_cmp expect actual &&
git push --delete --force-with-lease origin rama-de-árbol &&
git ls-remote origin refs/heads/rama-de-árbol >actual &&
test_must_be_empty actual
'
test_expect_success 'colorize errors/hints' '
cd "$ROOT_PATH"/test_repo_clone &&
test_must_fail git -c color.transport=always -c color.advice=always \
-c color.push=always \
push origin origin/main^:main 2>act &&
test_decode_color <act >decoded &&
test_grep "<RED>.*rejected.*<RESET>" decoded &&
test_grep "<RED>error: failed to push some refs" decoded &&
test_grep "<YELLOW>hint: " decoded &&
test_grep ! "^hint: " decoded
'
send-pack: complain about "expecting report" with --helper-status When pushing to a server which erroneously omits the final ref-status report, the client side should complain about the refs for which we didn't receive the status (because we can't just assume they were updated). This works over most transports like ssh, but for http we'll print a very misleading "Everything up-to-date". It works for ssh because send-pack internally sets the status of each ref to REF_STATUS_EXPECTING_REPORT, and then if the server doesn't tell us about a particular ref, it will stay at that value. When we print the final status table, we'll see that we're still on EXPECTING_REPORT and complain then. But for http, we go through remote-curl, which invokes send-pack with "--stateless-rpc --helper-status". The latter option causes send-pack to return a machine-readable list of ref statuses to the remote helper. But ever since its inception in de1a2fdd38 (Smart push over HTTP: client side, 2009-10-30), the send-pack code has simply omitted mention of any ref which ended up in EXPECTING_REPORT. In the remote helper, we then take the absence of any status report from send-pack to mean that the ref was not even something we tried to send, and thus it prints "Everything up-to-date". Fortunately it does detect the eventual non-zero exit from send-pack, and propagates that in its own non-zero exit code. So at least a careful script invoking "git push" would notice the failure. But sending the misleading message on stderr is certainly confusing for humans (not to mention the machine-readable "push --porcelain" output, though again, any careful script should be checking the exit code from push, too). Nobody seems to have noticed because the server in this instance has to be misbehaving: it has promised to support the ref-status capability (otherwise the client will not set EXPECTING_REPORT at all), but didn't send us any. If the connection were simply cut, then send-pack would complain about getting EOF while trying to read the status. But if the server actually sends a flush packet (i.e., saying "now you have all of the ref statuses" without actually sending any), then the client ends up in this confused situation. The fix is simple: we should return an error message from "send-pack --helper-status", just like we would for any other error per-ref error condition (in the test I included, the server simply omits all ref status responses, but a more insidious version of this would skip only some of them). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-18 19:43:47 +00:00
test_expect_success 'report error server does not provide ref status' '
git init "$HTTPD_DOCUMENT_ROOT_PATH/no_report" &&
git -C "$HTTPD_DOCUMENT_ROOT_PATH/no_report" config http.receivepack true &&
test_must_fail git push --porcelain \
$HTTPD_URL_USER_PASS/smart/no_report \
HEAD:refs/tags/will-fail >actual &&
test_must_fail git -C "$HTTPD_DOCUMENT_ROOT_PATH/no_report" \
rev-parse --verify refs/tags/will-fail &&
cat >expect <<-EOF &&
To $HTTPD_URL/smart/no_report
! HEAD:refs/tags/will-fail [remote failure] (remote failed to report status)
send-pack: complain about "expecting report" with --helper-status When pushing to a server which erroneously omits the final ref-status report, the client side should complain about the refs for which we didn't receive the status (because we can't just assume they were updated). This works over most transports like ssh, but for http we'll print a very misleading "Everything up-to-date". It works for ssh because send-pack internally sets the status of each ref to REF_STATUS_EXPECTING_REPORT, and then if the server doesn't tell us about a particular ref, it will stay at that value. When we print the final status table, we'll see that we're still on EXPECTING_REPORT and complain then. But for http, we go through remote-curl, which invokes send-pack with "--stateless-rpc --helper-status". The latter option causes send-pack to return a machine-readable list of ref statuses to the remote helper. But ever since its inception in de1a2fdd38 (Smart push over HTTP: client side, 2009-10-30), the send-pack code has simply omitted mention of any ref which ended up in EXPECTING_REPORT. In the remote helper, we then take the absence of any status report from send-pack to mean that the ref was not even something we tried to send, and thus it prints "Everything up-to-date". Fortunately it does detect the eventual non-zero exit from send-pack, and propagates that in its own non-zero exit code. So at least a careful script invoking "git push" would notice the failure. But sending the misleading message on stderr is certainly confusing for humans (not to mention the machine-readable "push --porcelain" output, though again, any careful script should be checking the exit code from push, too). Nobody seems to have noticed because the server in this instance has to be misbehaving: it has promised to support the ref-status capability (otherwise the client will not set EXPECTING_REPORT at all), but didn't send us any. If the connection were simply cut, then send-pack would complain about getting EOF while trying to read the status. But if the server actually sends a flush packet (i.e., saying "now you have all of the ref statuses" without actually sending any), then the client ends up in this confused situation. The fix is simple: we should return an error message from "send-pack --helper-status", just like we would for any other error per-ref error condition (in the test I included, the server simply omits all ref status responses, but a more insidious version of this would skip only some of them). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-18 19:43:47 +00:00
Done
EOF
test_cmp expect actual
'
test smart http fetch and push The top level directory "/smart/" of the test Apache server is mapped through our git-http-backend CGI, but uses the same underlying repository space as the server's document root. This is the most simple installation possible. Server logs are checked to verify the client has accessed only the smart URLs during the test. During fetch testing the headers are also logged from libcurl to ensure we are making a reasonably sane HTTP request, and getting back reasonably sane response headers from the CGI. When validating the request headers used during smart fetch we munge away the actual Content-Length and replace it with the placeholder "xxx". This avoids unnecessary varability in the test caused by an unrelated change in the requested capabilities in the first want line of the request. However, we still want to look for and verify that Content-Length was used, because smaller payloads should be using Content-Length and not "Transfer-Encoding: chunked". When validating the server response headers we must discard both Content-Length and Transfer-Encoding, as Apache2 can use either format to return our response. During development of this test I observed Apache returning both forms, depending on when the processes got CPU time. If our CGI returned the pack data quickly, Apache just buffered the whole thing and returned a Content-Length. If our CGI took just a bit too long to complete, Apache flushed its buffer and instead used "Transfer-Encoding: chunked". Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-31 00:47:47 +00:00
test_done