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http: add support for authtype and credential

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Now that we have the credential helper code set up to handle arbitrary
authentications schemes, let's add support for this in the HTTP code,
where we really want to use it.  If we're using this new functionality,
don't set a username and password, and instead set a header wherever
we'd normally do so, including for proxy authentication.

Since we can now handle this case, ask the credential helper to enable
the appropriate capabilities.

Finally, if we're using the authtype value, set "Expect: 100-continue".
Any type of authentication that requires multiple rounds (such as NTLM
or Kerberos) requires a 100 Continue (if we're larger than
http.postBuffer) because otherwise we send the pack data before we're
authenticated, the push gets a 401 response, and we can't rewind the
stream.  We don't know for certain what other custom schemes might
require this, the HTTP/1.1 standard has required handling this since
1999, the broken HTTP server for which we disabled this (Google's) is
now fixed and has been for some time, and libcurl has a 1-second
fallback in case the HTTP server is still broken.  In addition, it is
not unreasonable to require compliance with a 25-year old standard to
use new Git features.  For all of these reasons, do so here.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
brian m. carlson
2024-04-17 00:02:32 +00:00
committed by Junio C Hamano
parent 5af5cc68aa
commit ad9bb6dfe6
4 changed files with 176 additions and 12 deletions
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133
t/t5563-simple-http-auth.sh
View File

@ -74,6 +74,7 @@ test_expect_success 'access using basic auth' '
git ls-remote "$HTTPD_URL/custom_auth/repo.git" &&
expect_credential_query get <<-EOF &&
capability[]=authtype
protocol=http
host=$HTTPD_DEST
wwwauth[]=Basic realm="example.com"
@ -87,6 +88,43 @@ test_expect_success 'access using basic auth' '
EOF
'
test_expect_success 'access using basic auth via authtype' '
test_when_finished "per_test_cleanup" &&
set_credential_reply get <<-EOF &&
capability[]=authtype
authtype=Basic
credential=YWxpY2U6c2VjcmV0LXBhc3N3ZA==
EOF
# Basic base64(alice:secret-passwd)
cat >"$HTTPD_ROOT_PATH/custom-auth.valid" <<-EOF &&
Basic YWxpY2U6c2VjcmV0LXBhc3N3ZA==
EOF
cat >"$HTTPD_ROOT_PATH/custom-auth.challenge" <<-EOF &&
WWW-Authenticate: Basic realm="example.com"
EOF
test_config_global credential.helper test-helper &&
GIT_CURL_VERBOSE=1 git ls-remote "$HTTPD_URL/custom_auth/repo.git" &&
expect_credential_query get <<-EOF &&
capability[]=authtype
protocol=http
host=$HTTPD_DEST
wwwauth[]=Basic realm="example.com"
EOF
expect_credential_query store <<-EOF
capability[]=authtype
authtype=Basic
credential=YWxpY2U6c2VjcmV0LXBhc3N3ZA==
protocol=http
host=$HTTPD_DEST
EOF
'
test_expect_success 'access using basic auth invalid credentials' '
test_when_finished "per_test_cleanup" &&
@ -108,6 +146,7 @@ test_expect_success 'access using basic auth invalid credentials' '
test_must_fail git ls-remote "$HTTPD_URL/custom_auth/repo.git" &&
expect_credential_query get <<-EOF &&
capability[]=authtype
protocol=http
host=$HTTPD_DEST
wwwauth[]=Basic realm="example.com"
@ -145,6 +184,7 @@ test_expect_success 'access using basic auth with extra challenges' '
git ls-remote "$HTTPD_URL/custom_auth/repo.git" &&
expect_credential_query get <<-EOF &&
capability[]=authtype
protocol=http
host=$HTTPD_DEST
wwwauth[]=FooBar param1="value1" param2="value2"
@ -183,6 +223,7 @@ test_expect_success 'access using basic auth mixed-case wwwauth header name' '
git ls-remote "$HTTPD_URL/custom_auth/repo.git" &&
expect_credential_query get <<-EOF &&
capability[]=authtype
protocol=http
host=$HTTPD_DEST
wwwauth[]=foobar param1="value1" param2="value2"
@ -226,6 +267,7 @@ test_expect_success 'access using basic auth with wwwauth header continuations'
git ls-remote "$HTTPD_URL/custom_auth/repo.git" &&
expect_credential_query get <<-EOF &&
capability[]=authtype
protocol=http
host=$HTTPD_DEST
wwwauth[]=FooBar param1="value1" param2="value2"
@ -271,6 +313,7 @@ test_expect_success 'access using basic auth with wwwauth header empty continuat
git ls-remote "$HTTPD_URL/custom_auth/repo.git" &&
expect_credential_query get <<-EOF &&
capability[]=authtype
protocol=http
host=$HTTPD_DEST
wwwauth[]=FooBar param1="value1" param2="value2"
@ -312,6 +355,7 @@ test_expect_success 'access using basic auth with wwwauth header mixed line-endi
git ls-remote "$HTTPD_URL/custom_auth/repo.git" &&
expect_credential_query get <<-EOF &&
capability[]=authtype
protocol=http
host=$HTTPD_DEST
wwwauth[]=FooBar param1="value1" param2="value2"
@ -326,4 +370,93 @@ test_expect_success 'access using basic auth with wwwauth header mixed line-endi
EOF
'
test_expect_success 'access using bearer auth' '
test_when_finished "per_test_cleanup" &&
set_credential_reply get <<-EOF &&
capability[]=authtype
authtype=Bearer
credential=YS1naXQtdG9rZW4=
EOF
# Basic base64(a-git-token)
cat >"$HTTPD_ROOT_PATH/custom-auth.valid" <<-EOF &&
Bearer YS1naXQtdG9rZW4=
EOF
CHALLENGE="$HTTPD_ROOT_PATH/custom-auth.challenge" &&
cat >"$HTTPD_ROOT_PATH/custom-auth.challenge" <<-EOF &&
WWW-Authenticate: FooBar param1="value1" param2="value2"
WWW-Authenticate: Bearer authorize_uri="id.example.com" p=1 q=0
WWW-Authenticate: Basic realm="example.com"
EOF
test_config_global credential.helper test-helper &&
git ls-remote "$HTTPD_URL/custom_auth/repo.git" &&
expect_credential_query get <<-EOF &&
capability[]=authtype
protocol=http
host=$HTTPD_DEST
wwwauth[]=FooBar param1="value1" param2="value2"
wwwauth[]=Bearer authorize_uri="id.example.com" p=1 q=0
wwwauth[]=Basic realm="example.com"
EOF
expect_credential_query store <<-EOF
capability[]=authtype
authtype=Bearer
credential=YS1naXQtdG9rZW4=
protocol=http
host=$HTTPD_DEST
EOF
'
test_expect_success 'access using bearer auth with invalid credentials' '
test_when_finished "per_test_cleanup" &&
set_credential_reply get <<-EOF &&
capability[]=authtype
authtype=Bearer
credential=incorrect-token
EOF
# Basic base64(a-git-token)
cat >"$HTTPD_ROOT_PATH/custom-auth.valid" <<-EOF &&
Bearer YS1naXQtdG9rZW4=
EOF
CHALLENGE="$HTTPD_ROOT_PATH/custom-auth.challenge" &&
cat >"$HTTPD_ROOT_PATH/custom-auth.challenge" <<-EOF &&
WWW-Authenticate: FooBar param1="value1" param2="value2"
WWW-Authenticate: Bearer authorize_uri="id.example.com" p=1 q=0
WWW-Authenticate: Basic realm="example.com"
EOF
test_config_global credential.helper test-helper &&
test_must_fail git ls-remote "$HTTPD_URL/custom_auth/repo.git" &&
expect_credential_query get <<-EOF &&
capability[]=authtype
protocol=http
host=$HTTPD_DEST
wwwauth[]=FooBar param1="value1" param2="value2"
wwwauth[]=Bearer authorize_uri="id.example.com" p=1 q=0
wwwauth[]=Basic realm="example.com"
EOF
expect_credential_query erase <<-EOF
capability[]=authtype
authtype=Bearer
credential=incorrect-token
protocol=http
host=$HTTPD_DEST
wwwauth[]=FooBar param1="value1" param2="value2"
wwwauth[]=Bearer authorize_uri="id.example.com" p=1 q=0
wwwauth[]=Basic realm="example.com"
EOF
'
test_done