add submodule diff links (#33097)

This adds links to submodules in diffs, similar to the existing link
when viewing a repo at a specific commit. It does this by expanding diff
parsing to recognize changes to submodules, and find the specific refs
that are added, deleted or changed.

Related #25888

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

go.mod

@@ -24,7 +24,7 @@ require (
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.16.0
 	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.4.1
 	github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358
-	github.com/ProtonMail/go-crypto v1.0.0
+	github.com/ProtonMail/go-crypto v1.1.4
 	github.com/PuerkitoBio/goquery v1.10.0
 	github.com/SaveTheRbtz/zstd-seekable-format-go/pkg v0.7.3
 	github.com/alecthomas/chroma/v2 v2.14.0
@@ -54,8 +54,8 @@ require (
 	github.com/go-chi/cors v1.2.1
 	github.com/go-co-op/gocron v1.37.0
 	github.com/go-enry/go-enry/v2 v2.9.1
-	github.com/go-git/go-billy/v5 v5.6.0
+	github.com/go-git/go-billy/v5 v5.6.1
-	github.com/go-git/go-git/v5 v5.12.0
+	github.com/go-git/go-git/v5 v5.13.1
 	github.com/go-ldap/ldap/v3 v3.4.8
 	github.com/go-redsync/redsync/v4 v4.13.0
 	github.com/go-sql-driver/mysql v1.8.1
@@ -106,7 +106,7 @@ require (
 	github.com/sassoftware/go-rpmutils v0.4.0
 	github.com/sergi/go-diff v1.3.2-0.20230802210424-5b0b94c5c0d3
 	github.com/shurcooL/vfsgen v0.0.0-20230704071429-0000e147ea92
-	github.com/stretchr/testify v1.9.0
+	github.com/stretchr/testify v1.10.0
 	github.com/syndtr/goleveldb v1.0.0
 	github.com/tstranex/u2f v1.0.0
 	github.com/ulikunitz/xz v0.5.12
@@ -118,14 +118,14 @@ require (
 	github.com/yuin/goldmark v1.7.8
 	github.com/yuin/goldmark-highlighting/v2 v2.0.0-20230729083705-37449abec8cc
 	github.com/yuin/goldmark-meta v1.1.0
-	golang.org/x/crypto v0.31.0
+	golang.org/x/crypto v0.32.0
 	golang.org/x/image v0.21.0
-	golang.org/x/net v0.33.0
+	golang.org/x/net v0.34.0
 	golang.org/x/oauth2 v0.23.0
 	golang.org/x/sync v0.10.0
-	golang.org/x/sys v0.28.0
+	golang.org/x/sys v0.29.0
 	golang.org/x/text v0.21.0
-	golang.org/x/tools v0.26.0
+	golang.org/x/tools v0.29.0
 	google.golang.org/grpc v1.67.1
 	google.golang.org/protobuf v1.35.1
 	gopkg.in/ini.v1 v1.67.0
@@ -186,7 +186,7 @@ require (
 	github.com/couchbase/gomemcached v0.3.2 // indirect
 	github.com/couchbase/goutils v0.1.2 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.5 // indirect
-	github.com/cyphar/filepath-securejoin v0.3.4 // indirect
+	github.com/cyphar/filepath-securejoin v0.3.6 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/davidmz/go-pageant v1.0.2 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
@@ -219,7 +219,7 @@ require (
 	github.com/golang-sql/civil v0.0.0-20220223132316-b832511892a9 // indirect
 	github.com/golang-sql/sqlexp v0.1.0 // indirect
 	github.com/golang/geo v0.0.0-20230421003525-6adc56603217 // indirect
-	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/btree v1.1.3 // indirect
@@ -253,6 +253,7 @@ require (
 	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
+	github.com/mmcloughlin/avo v0.6.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/mrjones/oauth v0.0.0-20190623134757-126b35219450 // indirect
@@ -264,7 +265,7 @@ require (
 	github.com/onsi/ginkgo v1.16.5 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
 	github.com/pierrec/lz4/v4 v4.1.21 // indirect
-	github.com/pjbgf/sha1cd v0.3.0 // indirect
+	github.com/pjbgf/sha1cd v0.3.1 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/prometheus/client_model v0.6.1 // indirect
 	github.com/prometheus/common v0.60.1 // indirect
@@ -304,7 +305,7 @@ require (
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
 	golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c // indirect
-	golang.org/x/mod v0.21.0 // indirect
+	golang.org/x/mod v0.22.0 // indirect
 	golang.org/x/time v0.7.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20241021214115-324edc3d5d38 // indirect
 	gopkg.in/warnings.v0 v0.1.2 // indirect

go.sum

@@ -71,8 +71,8 @@ github.com/Masterminds/sprig/v3 v3.3.0/go.mod h1:Zy1iXRYNqNLUolqCpL4uhk6SHUMAOSC
 github.com/Microsoft/go-winio v0.5.2/go.mod h1:WpS1mjBmmwHBEWmogvA2mj8546UReBk4v8QkMxJ6pZY=
 github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
 github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU=
-github.com/ProtonMail/go-crypto v1.0.0 h1:LRuvITjQWX+WIfr930YHG2HNfjR1uOfyf5vE0kC2U78=
+github.com/ProtonMail/go-crypto v1.1.4 h1:G5U5asvD5N/6/36oIw3k2bOfBn5XVcZrb7PBjzzKKoE=
-github.com/ProtonMail/go-crypto v1.0.0/go.mod h1:EjAoLdwvbIOoOQr3ihjnSoLZRtE8azugULFRteWMNc0=
+github.com/ProtonMail/go-crypto v1.1.4/go.mod h1:rA3QumHc/FZ8pAHreoekgiAbzpNsfQAosU5td4SnOrE=
 github.com/PuerkitoBio/goquery v1.10.0 h1:6fiXdLuUvYs2OJSvNRqlNPoBm6YABE226xrbavY5Wv4=
 github.com/PuerkitoBio/goquery v1.10.0/go.mod h1:TjZZl68Q3eGHNBA8CWaxAN7rOU1EbDz3CWuolcO5Yu4=
 github.com/RoaringBitmap/roaring v0.4.23/go.mod h1:D0gp8kJQgE1A4LQ5wFLggQEyvDi06Mq5mKs52e1TwOo=
@@ -188,7 +188,6 @@ github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
 github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
 github.com/buildkite/terminal-to-html/v3 v3.16.3 h1:IGuJjboHjuMLWOGsKZKNxbbn41emOLiHzXPmQZk31fk=
 github.com/buildkite/terminal-to-html/v3 v3.16.3/go.mod h1:r/J7cC9c3EzBzP3/wDz0RJLPwv5PUAMp+KF2w+ntMc0=
-github.com/bwesterb/go-ristretto v1.2.3/go.mod h1:fUIoIZaG73pV5biE2Blr2xEzDoMj7NFEuV9ekS419A0=
 github.com/caddyserver/certmagic v0.21.4 h1:e7VobB8rffHv8ZZpSiZtEwnLDHUwLVYLWzWSa1FfKI0=
 github.com/caddyserver/certmagic v0.21.4/go.mod h1:swUXjQ1T9ZtMv95qj7/InJvWLXURU85r+CfG0T+ZbDE=
 github.com/caddyserver/zerossl v0.1.3 h1:onS+pxp3M8HnHpN5MMbOMyNjmTheJyWRaZYwn+YTAyA=
@@ -205,7 +204,6 @@ github.com/chromedp/sysutil v1.0.0/go.mod h1:kgWmDdq8fTzXYcKIBqIYvRRTnYb9aNS9moA
 github.com/chzyer/logex v1.2.1/go.mod h1:JLbx6lG2kDbNRFnfkgvh4eRJRPX1QCoOIWomwysCBrQ=
 github.com/chzyer/readline v1.5.1/go.mod h1:Eh+b79XXUwfKfcPLepksvw2tcLE/Ct21YObkaSkeBlk=
 github.com/chzyer/test v1.0.0/go.mod h1:2JlltgoNkt4TW/z9V/IzDdFaMTM2JPIi26O1pF38GC8=
-github.com/cloudflare/circl v1.3.3/go.mod h1:5XYMA4rFBvNIrhs50XuiBJ15vF2pZn4nnUKZrLbUZFA=
 github.com/cloudflare/circl v1.5.0 h1:hxIWksrX6XN5a1L2TI/h53AGPhNHoUBo+TD1ms9+pys=
 github.com/cloudflare/circl v1.5.0/go.mod h1:uddAzsPgqdMAYatqJ0lsjX1oECcQLIlRpzZh3pJrofs=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
@@ -223,8 +221,8 @@ github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwc
 github.com/cpuguy83/go-md2man/v2 v2.0.5 h1:ZtcqGrnekaHpVLArFSe4HK5DoKx1T0rq2DwVB0alcyc=
 github.com/cpuguy83/go-md2man/v2 v2.0.5/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
-github.com/cyphar/filepath-securejoin v0.3.4 h1:VBWugsJh2ZxJmLFSM06/0qzQyiQX2Qs0ViKrUAcqdZ8=
+github.com/cyphar/filepath-securejoin v0.3.6 h1:4d9N5ykBnSp5Xn2JkhocYDkOpURL/18CYMpo6xB9uWM=
-github.com/cyphar/filepath-securejoin v0.3.4/go.mod h1:8s/MCNJREmFK0H02MF6Ihv1nakJe4L/w3WZLHNkvlYM=
+github.com/cyphar/filepath-securejoin v0.3.6/go.mod h1:Sdj7gXlvMcPZsbhwhQ33GguGLDGQL7h7bg04C/+u9jI=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
@@ -254,8 +252,8 @@ github.com/dvyukov/go-fuzz v0.0.0-20210429054444-fca39067bc72/go.mod h1:11Gm+ccJ
 github.com/editorconfig/editorconfig-core-go/v2 v2.6.2 h1:dKG8sc7n321deIVRcQtwlMNoBEra7j0qQ8RwxO8RN0w=
 github.com/editorconfig/editorconfig-core-go/v2 v2.6.2/go.mod h1:7dvD3GCm7eBw53xZ/lsiq72LqobdMg3ITbMBxnmJmqY=
 github.com/elazarl/go-bindata-assetfs v1.0.1/go.mod h1:v+YaWX3bdea5J/mo8dSETolEo7R71Vk1u8bnjau5yw4=
-github.com/elazarl/goproxy v0.0.0-20230808193330-2592e75ae04a h1:mATvB/9r/3gvcejNsXKSkQ6lcIaNec2nyfOdlTBR2lU=
+github.com/elazarl/goproxy v1.2.3 h1:xwIyKHbaP5yfT6O9KIeYJR5549MXRQkoQMRXGztz8YQ=
-github.com/elazarl/goproxy v0.0.0-20230808193330-2592e75ae04a/go.mod h1:Ro8st/ElPeALwNFlcTpWmkr6IoMFfkjXAvTHpevnDsM=
+github.com/elazarl/goproxy v1.2.3/go.mod h1:YfEbZtqP4AetfO6d40vWchF3znWX7C7Vd6ZMfdL8z64=
 github.com/emersion/go-imap v1.2.1 h1:+s9ZjMEjOB8NzZMVTM3cCenz2JrQIGGo5j1df19WjTA=
 github.com/emersion/go-imap v1.2.1/go.mod h1:Qlx1FSx2FTxjnjWpIlVNEuX+ylerZQNFE5NsmKFSejY=
 github.com/emersion/go-message v0.15.0/go.mod h1:wQUEfE+38+7EW8p8aZ96ptg6bAb1iwdgej19uXASlE4=
@@ -313,12 +311,12 @@ github.com/go-fed/httpsig v1.1.1-0.20201223112313-55836744818e h1:oRq/fiirun5Hql
 github.com/go-fed/httpsig v1.1.1-0.20201223112313-55836744818e/go.mod h1:RCMrTZvN1bJYtofsG4rd5NaO5obxQ5xBkdiS7xsT7bM=
 github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 h1:+zs/tPmkDkHx3U66DAb0lQFJrpS6731Oaa12ikc+DiI=
 github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376/go.mod h1:an3vInlBmSxCcxctByoQdvwPiA7DTK7jaaFDBTtu0ic=
-github.com/go-git/go-billy/v5 v5.6.0 h1:w2hPNtoehvJIxR00Vb4xX94qHQi/ApZfX+nBE2Cjio8=
+github.com/go-git/go-billy/v5 v5.6.1 h1:u+dcrgaguSSkbjzHwelEjc0Yj300NUevrrPphk/SoRA=
-github.com/go-git/go-billy/v5 v5.6.0/go.mod h1:sFDq7xD3fn3E0GOwUSZqHo9lrkmx8xJhA0ZrfvjBRGM=
+github.com/go-git/go-billy/v5 v5.6.1/go.mod h1:0AsLr1z2+Uksi4NlElmMblP5rPcDZNRCD8ujZCRR2BE=
 github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399 h1:eMje31YglSBqCdIqdhKBW8lokaMrL3uTkpGYlE2OOT4=
 github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399/go.mod h1:1OCfN199q1Jm3HZlxleg+Dw/mwps2Wbk9frAWm+4FII=
-github.com/go-git/go-git/v5 v5.12.0 h1:7Md+ndsjrzZxbddRDZjF14qK+NN56sy6wkqaVrjZtys=
+github.com/go-git/go-git/v5 v5.13.1 h1:DAQ9APonnlvSWpvolXWIuV6Q6zXy2wHbN4cVlNR5Q+M=
-github.com/go-git/go-git/v5 v5.12.0/go.mod h1:FTM9VKtnI2m65hNI/TenDDDnUf2Q9FHnXYjuz9i5OEY=
+github.com/go-git/go-git/v5 v5.13.1/go.mod h1:qryJB4cSBoq3FRoBRf5A77joojuBcmPJ0qu3XXXVixc=
 github.com/go-ini/ini v1.67.0 h1:z6ZrTEZqSWOTyH2FlglNbNgARyHG8oLW9gMELqKr06A=
 github.com/go-ini/ini v1.67.0/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8=
 github.com/go-ldap/ldap/v3 v3.4.8 h1:loKJyspcRezt2Q3ZRMq2p/0v8iOurlmeXDPw6fikSvQ=
@@ -385,8 +383,8 @@ github.com/golang-sql/sqlexp v0.1.0 h1:ZCD6MBpcuOVfGVqsEmY5/4FtYiKz6tSyUv9LPEDei
 github.com/golang-sql/sqlexp v0.1.0/go.mod h1:J4ad9Vo8ZCWQ2GMrC4UCQy1JpCbwU9m3EOqtpKwwwHI=
 github.com/golang/geo v0.0.0-20230421003525-6adc56603217 h1:HKlyj6in2JV6wVkmQ4XmG/EIm+SCYlPZ+V4GWit7Z+I=
 github.com/golang/geo v0.0.0-20230421003525-6adc56603217/go.mod h1:8wI0hitZ3a1IxZfeH3/5I97CI8i5cLGsYe7xNhQGs9U=
-github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE=
+github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 h1:f+oWsMOmNPc8JmEHVZIycC7hBoQxHH9pNKQORJNozsQ=
-github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8/go.mod h1:wcDNUvekVysuuOpQKo3191zZyTpiI6se1N1ULghS0sw=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
@@ -581,6 +579,8 @@ github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyua
 github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/mitchellh/reflectwalk v1.0.2 h1:G2LzWKi524PWgd3mLHV8Y5k7s6XUvT0Gef6zxSIeXaQ=
 github.com/mitchellh/reflectwalk v1.0.2/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
+github.com/mmcloughlin/avo v0.6.0 h1:QH6FU8SKoTLaVs80GA8TJuLNkUYl4VokHKlPhVDg4YY=
+github.com/mmcloughlin/avo v0.6.0/go.mod h1:8CoAGaCSYXtCPR+8y18Y9aB/kxb8JSS6FRI7mSkvD+8=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@@ -631,8 +631,8 @@ github.com/philhofer/fwd v1.0.0/go.mod h1:gk3iGcWd9+svBvR0sR+KPcfE+RNWozjowpeBVG
 github.com/pierrec/lz4/v4 v4.1.2/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
 github.com/pierrec/lz4/v4 v4.1.21 h1:yOVMLb6qSIDP67pl/5F7RepeKYu/VmTyEXvuMI5d9mQ=
 github.com/pierrec/lz4/v4 v4.1.21/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
-github.com/pjbgf/sha1cd v0.3.0 h1:4D5XXmUUBUl/xQ6IjCkEAbqXskkq/4O7LmGn0AqMDs4=
+github.com/pjbgf/sha1cd v0.3.1 h1:Dh2GYdpJnO84lIw0LJwTFXjcNbasP/bklicSznyAaPI=
-github.com/pjbgf/sha1cd v0.3.0/go.mod h1:nZ1rrWOcGJ5uZgEEVL1VUM9iRQiZvWdbZjkKyFzPPsI=
+github.com/pjbgf/sha1cd v0.3.1/go.mod h1:Y8t7jSB/dEI/lQE04A1HVKteqjj9bX5O4+Cex0TCu8s=
 github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c h1:+mdjkGKdHQG3305AYmdv1U2eRNDiU2ErMBj1gwrq8eQ=
 github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c/go.mod h1:7rwL4CYBLnjLxUqIJNnCWiEdr3bn6IUYi15bNlnbCCU=
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
@@ -737,8 +737,8 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
-github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/stvp/tempredis v0.0.0-20181119212430-b82af8480203 h1:QVqDTf3h2WHt08YuiTGPZLls0Wq99X9bWd0Q5ZSBesM=
 github.com/stvp/tempredis v0.0.0-20181119212430-b82af8480203/go.mod h1:oqN97ltKNihBbwlX8dLpwxCl3+HnXKV/R0e+sRLd9C8=
 github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
@@ -823,16 +823,14 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-golang.org/x/crypto v0.3.1-0.20221117191849-2c476679df9a/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
 golang.org/x/crypto v0.6.0/go.mod h1:OFC/31mSvZgRz0V1QTNCzfAI1aIRzbiufJtkMIlEp58=
-golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
 golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
 golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
 golang.org/x/crypto v0.21.0/go.mod h1:0BP7YvVV9gBbVKyeTG0Gyn+gZm94bibOW5BjDEYAOMs=
 golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
 golang.org/x/crypto v0.28.0/go.mod h1:rmgy+3RHxRZMyY0jjAJShp2zgEdOqj2AO7U0pYmeQ7U=
-golang.org/x/crypto v0.31.0 h1:ihbySMvVjLAeSH1IbfcRTkD/iNscyz8rGzjF/E5hV6U=
+golang.org/x/crypto v0.32.0 h1:euUpcYgM8WcP71gNpTqQCn6rC2t6ULUPiOzfWaXVVfc=
-golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
+golang.org/x/crypto v0.32.0/go.mod h1:ZnnJkOaASj8g0AjIduWNlq2NRxL0PlBrbKVyZ6V/Ugc=
 golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c h1:7dEasQXItcW1xKJ2+gg5VOiBnqWrJc+rq0DPKyvvdbY=
 golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c/go.mod h1:NQtJDoLvd6faHhE7m4T/1IY708gDefGGjR/iUW8yQQ8=
 golang.org/x/image v0.21.0 h1:c5qV36ajHpdj4Qi0GnE0jUc/yuo33OLFaa0d+crTD5s=
@@ -846,8 +844,8 @@ golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
-golang.org/x/mod v0.21.0 h1:vvrHzRwRfVKSiLrG+d4FMl/Qi4ukBCE6kZlTUkDYRT0=
+golang.org/x/mod v0.22.0 h1:D4nJWe9zXqHOmWqj4VMOJhvzj7bEZg4wEYa759z1pH4=
-golang.org/x/mod v0.21.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
+golang.org/x/mod v0.22.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@@ -859,18 +857,16 @@ golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY=
 golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
-golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
 golang.org/x/net v0.9.0/go.mod h1:d48xBJpPfHeWQsugry2m+kC02ZBRGRgulfHnEXEuWns=
 golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
 golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
 golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
 golang.org/x/net v0.22.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
 golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
-golang.org/x/net v0.33.0 h1:74SYHlV8BIgHIFC/LrYkOGIwL19eTYXQ5wc6TBuO36I=
+golang.org/x/net v0.34.0 h1:Mb7Mrk043xzHgnRM88suvJFwzVrRfHEHJEl5/71CKw0=
-golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
+golang.org/x/net v0.34.0/go.mod h1:di0qlW3YNM5oh6GqDGQr92MyTozJPmybPK4Ev/Gm31k=
 golang.org/x/oauth2 v0.23.0 h1:PbgcYx2W7i4LvjJWEbf0ngHV6qJYr86PkAV3bXdLEbs=
 golang.org/x/oauth2 v0.23.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -910,8 +906,6 @@ golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.7.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -921,14 +915,12 @@ golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.26.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.28.0 h1:Fksou7UEQUWlKvIdsqzJmUmCX3cZuD2+P3XyyzwMhlA=
+golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
-golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/telemetry v0.0.0-20240228155512-f48c80bd79b2/go.mod h1:TeRTkGYfJXctD9OcfyVLyj2J3IxLnKwHJR8f4D8a3YE=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
 golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
-golang.org/x/term v0.6.0/go.mod h1:m6U89DPEgQRMq3DNkDClhWw02AUbt2daBVO4cn4Hv9U=
 golang.org/x/term v0.7.0/go.mod h1:P32HKFT3hSsZrRxla30E9HqToFYAQPCMs/zFMBUFqPY=
 golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
 golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
@@ -936,15 +928,13 @@ golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
 golang.org/x/term v0.18.0/go.mod h1:ILwASektA3OnRv7amZ1xhE/KTR+u50pbXfZ03+6Nx58=
 golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
 golang.org/x/term v0.25.0/go.mod h1:RPyXicDX+6vLxogjjRxjgD2TKtmAO6NZBsBRfrOLu7M=
-golang.org/x/term v0.27.0 h1:WP60Sv1nlK1T6SupCHbXzSaN0b9wUmsPoRS9b61A23Q=
+golang.org/x/term v0.28.0 h1:/Ts8HFuMR2E6IP/jlo7QVLZHggjKQbhu/7H0LJFr3Gg=
-golang.org/x/term v0.27.0/go.mod h1:iMsnZpn0cago0GOrHO2+Y7u7JPn5AylBrcoWkElMTSM=
+golang.org/x/term v0.28.0/go.mod h1:Sw/lC2IAUZ92udQNf3WodGtn4k/XoLyZoh8v/8uiwek=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
@@ -964,8 +954,8 @@ golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
 golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
-golang.org/x/tools v0.26.0 h1:v/60pFQmzmT9ExmjDv2gGIfi3OqfKoEP6I5+umXlbnQ=
+golang.org/x/tools v0.29.0 h1:Xx0h3TtM9rzQpQuR4dKLrdglAmCEN5Oi+P74JdhdzXE=
-golang.org/x/tools v0.26.0/go.mod h1:TPVVj70c7JJ3WCazhD8OdXcZg/og+b9+tH/KxylGwH0=
+golang.org/x/tools v0.29.0/go.mod h1:KMQVMRsVxU6nHCFXrBPhDB8XncLNLM0lIy/F14RP588=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

models/repo/repo.go

@@ -784,60 +784,10 @@ func GetRepositoryByName(ctx context.Context, ownerID int64, name string) (*Repo
 	return &repo, err
 }
 
-func parseRepositoryURL(ctx context.Context, repoURL string) (ret struct {
-	OwnerName, RepoName, RemainingPath string
-},
-) {
-	// possible urls for git:
-	//  https://my.domain/sub-path/<owner>/<repo>[.git]
-	//  git+ssh://user@my.domain/<owner>/<repo>[.git]
-	//  ssh://user@my.domain/<owner>/<repo>[.git]
-	//  user@my.domain:<owner>/<repo>[.git]
-
-	fillPathParts := func(s string) {
-		s = strings.TrimPrefix(s, "/")
-		fields := strings.SplitN(s, "/", 3)
-		if len(fields) >= 2 {
-			ret.OwnerName = fields[0]
-			ret.RepoName = strings.TrimSuffix(fields[1], ".git")
-			if len(fields) == 3 {
-				ret.RemainingPath = "/" + fields[2]
-			}
-		}
-	}
-
-	parsed, err := giturl.ParseGitURL(repoURL)
-	if err != nil {
-		return ret
-	}
-	if parsed.URL.Scheme == "http" || parsed.URL.Scheme == "https" {
-		if !httplib.IsCurrentGiteaSiteURL(ctx, repoURL) {
-			return ret
-		}
-		fillPathParts(strings.TrimPrefix(parsed.URL.Path, setting.AppSubURL))
-	} else if parsed.URL.Scheme == "ssh" || parsed.URL.Scheme == "git+ssh" {
-		domainSSH := setting.SSH.Domain
-		domainCur := httplib.GuessCurrentHostDomain(ctx)
-		urlDomain, _, _ := net.SplitHostPort(parsed.URL.Host)
-		urlDomain = util.IfZero(urlDomain, parsed.URL.Host)
-		if urlDomain == "" {
-			return ret
-		}
-		// check whether URL domain is the App domain
-		domainMatches := domainSSH == urlDomain
-		// check whether URL domain is current domain from context
-		domainMatches = domainMatches || (domainCur != "" && domainCur == urlDomain)
-		if domainMatches {
-			fillPathParts(parsed.URL.Path)
-		}
-	}
-	return ret
-}
-
 // GetRepositoryByURL returns the repository by given url
 func GetRepositoryByURL(ctx context.Context, repoURL string) (*Repository, error) {
-	ret := parseRepositoryURL(ctx, repoURL)
+	ret, err := giturl.ParseRepositoryURL(ctx, repoURL)
-	if ret.OwnerName == "" {
+	if err != nil || ret.OwnerName == "" {
 		return nil, fmt.Errorf("unknown or malformed repository URL")
 	}
 	return GetRepositoryByOwnerAndName(ctx, ret.OwnerName, ret.RepoName)

models/repo/repo_test.go

@@ -4,16 +4,12 @@
 package repo
 
 import (
-	"context"
-	"net/http"
-	"net/url"
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/unit"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
-	"code.gitea.io/gitea/modules/httplib"
 	"code.gitea.io/gitea/modules/markup"
 	"code.gitea.io/gitea/modules/optional"
 	"code.gitea.io/gitea/modules/setting"
@@ -132,79 +128,6 @@ func TestMetas(t *testing.T) {
 	assert.Equal(t, ",owners,team1,", metas["teams"])
 }
 
-func TestParseRepositoryURLPathSegments(t *testing.T) {
-	defer test.MockVariableValue(&setting.AppURL, "https://localhost:3000")()
-
-	ctxURL, _ := url.Parse("https://gitea")
-	ctxReq := &http.Request{URL: ctxURL, Header: http.Header{}}
-	ctxReq.Host = ctxURL.Host
-	ctxReq.Header.Add("X-Forwarded-Proto", ctxURL.Scheme)
-	ctx := context.WithValue(context.Background(), httplib.RequestContextKey, ctxReq)
-	cases := []struct {
-		input                          string
-		ownerName, repoName, remaining string
-	}{
-		{input: "/user/repo"},
-
-		{input: "https://localhost:3000/user/repo", ownerName: "user", repoName: "repo"},
-		{input: "https://external:3000/user/repo"},
-
-		{input: "https://localhost:3000/user/repo.git/other", ownerName: "user", repoName: "repo", remaining: "/other"},
-
-		{input: "https://gitea/user/repo", ownerName: "user", repoName: "repo"},
-		{input: "https://gitea:3333/user/repo"},
-
-		{input: "ssh://try.gitea.io:2222/user/repo", ownerName: "user", repoName: "repo"},
-		{input: "ssh://external:2222/user/repo"},
-
-		{input: "git+ssh://user@try.gitea.io/user/repo.git", ownerName: "user", repoName: "repo"},
-		{input: "git+ssh://user@external/user/repo.git"},
-
-		{input: "root@try.gitea.io:user/repo.git", ownerName: "user", repoName: "repo"},
-		{input: "root@gitea:user/repo.git", ownerName: "user", repoName: "repo"},
-		{input: "root@external:user/repo.git"},
-	}
-
-	for _, c := range cases {
-		t.Run(c.input, func(t *testing.T) {
-			ret := parseRepositoryURL(ctx, c.input)
-			assert.Equal(t, c.ownerName, ret.OwnerName)
-			assert.Equal(t, c.repoName, ret.RepoName)
-			assert.Equal(t, c.remaining, ret.RemainingPath)
-		})
-	}
-
-	t.Run("WithSubpath", func(t *testing.T) {
-		defer test.MockVariableValue(&setting.AppURL, "https://localhost:3000/subpath")()
-		defer test.MockVariableValue(&setting.AppSubURL, "/subpath")()
-		cases = []struct {
-			input                          string
-			ownerName, repoName, remaining string
-		}{
-			{input: "https://localhost:3000/user/repo"},
-			{input: "https://localhost:3000/subpath/user/repo.git/other", ownerName: "user", repoName: "repo", remaining: "/other"},
-
-			{input: "ssh://try.gitea.io:2222/user/repo", ownerName: "user", repoName: "repo"},
-			{input: "ssh://external:2222/user/repo"},
-
-			{input: "git+ssh://user@try.gitea.io/user/repo.git", ownerName: "user", repoName: "repo"},
-			{input: "git+ssh://user@external/user/repo.git"},
-
-			{input: "root@try.gitea.io:user/repo.git", ownerName: "user", repoName: "repo"},
-			{input: "root@external:user/repo.git"},
-		}
-
-		for _, c := range cases {
-			t.Run(c.input, func(t *testing.T) {
-				ret := parseRepositoryURL(ctx, c.input)
-				assert.Equal(t, c.ownerName, ret.OwnerName)
-				assert.Equal(t, c.repoName, ret.RepoName)
-				assert.Equal(t, c.remaining, ret.RemainingPath)
-			})
-		}
-	})
-}
-
 func TestGetRepositoryByURL(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 

modules/git/commit_info.go

@@ -7,5 +7,5 @@ package git
 type CommitInfo struct {
 	Entry         *TreeEntry
 	Commit        *Commit
-	SubModuleFile *CommitSubModuleFile
+	SubmoduleFile *CommitSubmoduleFile
 }

modules/git/commit_info_gogit.go

@@ -85,8 +85,8 @@ func (tes Entries) GetCommitsInfo(ctx context.Context, commit *Commit, treePath
 			} else if subModule != nil {
 				subModuleURL = subModule.URL
 			}
-			subModuleFile := NewCommitSubModuleFile(subModuleURL, entry.ID.String())
+			subModuleFile := NewCommitSubmoduleFile(subModuleURL, entry.ID.String())
-			commitsInfo[i].SubModuleFile = subModuleFile
+			commitsInfo[i].SubmoduleFile = subModuleFile
 		}
 	}
 

modules/git/commit_info_nogogit.go

@@ -79,8 +79,8 @@ func (tes Entries) GetCommitsInfo(ctx context.Context, commit *Commit, treePath
 			} else if subModule != nil {
 				subModuleURL = subModule.URL
 			}
-			subModuleFile := NewCommitSubModuleFile(subModuleURL, entry.ID.String())
+			subModuleFile := NewCommitSubmoduleFile(subModuleURL, entry.ID.String())
-			commitsInfo[i].SubModuleFile = subModuleFile
+			commitsInfo[i].SubmoduleFile = subModuleFile
 		}
 	}
 

modules/git/commit_submodule.go

@@ -3,6 +3,10 @@
 
 package git
 
+type SubmoduleWebLink struct {
+	RepoWebLink, CommitWebLink string
+}
+
 // GetSubModules get all the submodules of current revision git tree
 func (c *Commit) GetSubModules() (*ObjectCache[*SubModule], error) {
 	if c.submoduleCache != nil {

modules/git/commit_submodule_file.go

@@ -5,107 +5,50 @@
 package git
 
 import (
-	"fmt"
+	"context"
-	"net"
+
-	"net/url"
+	giturl "code.gitea.io/gitea/modules/git/url"
-	"path"
-	"regexp"
-	"strings"
 )
 
-var scpSyntax = regexp.MustCompile(`^([a-zA-Z0-9_]+@)?([a-zA-Z0-9._-]+):(.*)$`)
+// CommitSubmoduleFile represents a file with submodule type.
-
+type CommitSubmoduleFile struct {
-// CommitSubModuleFile represents a file with submodule type.
-type CommitSubModuleFile struct {
 	refURL    string
+	parsedURL *giturl.RepositoryURL
+	parsed    bool
 	refID     string
+	repoLink  string
 }
 
-// NewCommitSubModuleFile create a new submodule file
+// NewCommitSubmoduleFile create a new submodule file
-func NewCommitSubModuleFile(refURL, refID string) *CommitSubModuleFile {
+func NewCommitSubmoduleFile(refURL, refID string) *CommitSubmoduleFile {
-	return &CommitSubModuleFile{
+	return &CommitSubmoduleFile{refURL: refURL, refID: refID}
-		refURL: refURL,
-		refID:  refID,
-	}
 }
 
-func getRefURL(refURL, urlPrefix, repoFullName, sshDomain string) string {
+func (sf *CommitSubmoduleFile) RefID() string {
-	if refURL == "" {
+	return sf.refID // this function is only used in templates
-		return ""
 }
 
-	refURI := strings.TrimSuffix(refURL, ".git")
+// SubmoduleWebLink tries to make some web links for a submodule, it also works on "nil" receiver
-
+func (sf *CommitSubmoduleFile) SubmoduleWebLink(ctx context.Context, optCommitID ...string) *SubmoduleWebLink {
-	prefixURL, _ := url.Parse(urlPrefix)
+	if sf == nil {
-	urlPrefixHostname, _, err := net.SplitHostPort(prefixURL.Host)
+		return nil
+	}
+	if !sf.parsed {
+		sf.parsed = true
+		parsedURL, err := giturl.ParseRepositoryURL(ctx, sf.refURL)
 		if err != nil {
-		urlPrefixHostname = prefixURL.Host
+			return nil
 		}
-
+		sf.parsedURL = parsedURL
-	urlPrefix = strings.TrimSuffix(urlPrefix, "/")
+		sf.repoLink = giturl.MakeRepositoryWebLink(sf.parsedURL)
-
-	// FIXME: Need to consider branch - which will require changes in modules/git/commit.go:GetSubModules
-	// Relative url prefix check (according to git submodule documentation)
-	if strings.HasPrefix(refURI, "./") || strings.HasPrefix(refURI, "../") {
-		return urlPrefix + path.Clean(path.Join("/", repoFullName, refURI))
 	}
-
+	var commitLink string
-	if !strings.Contains(refURI, "://") {
+	if len(optCommitID) == 2 {
-		// scp style syntax which contains *no* port number after the : (and is not parsed by net/url)
+		commitLink = sf.repoLink + "/compare/" + optCommitID[0] + "..." + optCommitID[1]
-		// ex: git@try.gitea.io:go-gitea/gitea
+	} else if len(optCommitID) == 1 {
-		match := scpSyntax.FindAllStringSubmatch(refURI, -1)
+		commitLink = sf.repoLink + "/commit/" + optCommitID[0]
-		if len(match) > 0 {
+	} else {
-			m := match[0]
+		commitLink = sf.repoLink + "/commit/" + sf.refID
-			refHostname := m[2]
-			pth := m[3]
-
-			if !strings.HasPrefix(pth, "/") {
-				pth = "/" + pth
 	}
-
+	return &SubmoduleWebLink{RepoWebLink: sf.repoLink, CommitWebLink: commitLink}
-			if urlPrefixHostname == refHostname || refHostname == sshDomain {
-				return urlPrefix + path.Clean(path.Join("/", pth))
-			}
-			return "http://" + refHostname + pth
-		}
-	}
-
-	ref, err := url.Parse(refURI)
-	if err != nil {
-		return ""
-	}
-
-	refHostname, _, err := net.SplitHostPort(ref.Host)
-	if err != nil {
-		refHostname = ref.Host
-	}
-
-	supportedSchemes := []string{"http", "https", "git", "ssh", "git+ssh"}
-
-	for _, scheme := range supportedSchemes {
-		if ref.Scheme == scheme {
-			if ref.Scheme == "http" || ref.Scheme == "https" {
-				if len(ref.User.Username()) > 0 {
-					return ref.Scheme + "://" + fmt.Sprintf("%v", ref.User) + "@" + ref.Host + ref.Path
-				}
-				return ref.Scheme + "://" + ref.Host + ref.Path
-			} else if urlPrefixHostname == refHostname || refHostname == sshDomain {
-				return urlPrefix + path.Clean(path.Join("/", ref.Path))
-			}
-			return "http://" + refHostname + ref.Path
-		}
-	}
-
-	return ""
-}
-
-// RefURL guesses and returns reference URL.
-// FIXME: template passes AppURL as urlPrefix, it needs to figure out the correct approach (no hard-coded AppURL anymore)
-func (sf *CommitSubModuleFile) RefURL(urlPrefix, repoFullName, sshDomain string) string {
-	return getRefURL(sf.refURL, urlPrefix, repoFullName, sshDomain)
-}
-
-// RefID returns reference ID.
-func (sf *CommitSubModuleFile) RefID() string {
-	return sf.refID
 }

modules/git/commit_submodule_file_test.go

@@ -1,42 +1,30 @@
-// Copyright 2018 The Gitea Authors. All rights reserved.
+// Copyright 2024 The Gitea Authors. All rights reserved.
 // SPDX-License-Identifier: MIT
 
 package git
 
 import (
+	"context"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 )
 
-func TestCommitSubModuleFileGetRefURL(t *testing.T) {
+func TestCommitSubmoduleLink(t *testing.T) {
-	kases := []struct {
+	sf := NewCommitSubmoduleFile("git@github.com:user/repo.git", "aaaa")
-		refURL     string
-		prefixURL  string
-		parentPath string
-		SSHDomain  string
-		expect     string
-	}{
-		{"git://github.com/user1/repo1", "/", "user1/repo2", "", "http://github.com/user1/repo1"},
-		{"https://localhost/user1/repo1.git", "/", "user1/repo2", "", "https://localhost/user1/repo1"},
-		{"http://localhost/user1/repo1.git", "/", "owner/reponame", "", "http://localhost/user1/repo1"},
-		{"git@github.com:user1/repo1.git", "/", "owner/reponame", "", "http://github.com/user1/repo1"},
-		{"ssh://git@git.zefie.net:2222/zefie/lge_g6_kernel_scripts.git", "/", "zefie/lge_g6_kernel", "", "http://git.zefie.net/zefie/lge_g6_kernel_scripts"},
-		{"git@git.zefie.net:2222/zefie/lge_g6_kernel_scripts.git", "/", "zefie/lge_g6_kernel", "", "http://git.zefie.net/2222/zefie/lge_g6_kernel_scripts"},
-		{"git@try.gitea.io:go-gitea/gitea", "https://try.gitea.io/", "go-gitea/sdk", "", "https://try.gitea.io/go-gitea/gitea"},
-		{"ssh://git@try.gitea.io:9999/go-gitea/gitea", "https://try.gitea.io/", "go-gitea/sdk", "", "https://try.gitea.io/go-gitea/gitea"},
-		{"git://git@try.gitea.io:9999/go-gitea/gitea", "https://try.gitea.io/", "go-gitea/sdk", "", "https://try.gitea.io/go-gitea/gitea"},
-		{"ssh://git@127.0.0.1:9999/go-gitea/gitea", "https://127.0.0.1:3000/", "go-gitea/sdk", "", "https://127.0.0.1:3000/go-gitea/gitea"},
-		{"https://gitea.com:3000/user1/repo1.git", "https://127.0.0.1:3000/", "user/repo2", "", "https://gitea.com:3000/user1/repo1"},
-		{"https://example.gitea.com/gitea/user1/repo1.git", "https://example.gitea.com/gitea/", "", "user/repo2", "https://example.gitea.com/gitea/user1/repo1"},
-		{"https://username:password@github.com/username/repository.git", "/", "username/repository2", "", "https://username:password@github.com/username/repository"},
-		{"somethingbad", "https://127.0.0.1:3000/go-gitea/gitea", "/", "", ""},
-		{"git@localhost:user/repo", "https://localhost/", "user2/repo1", "", "https://localhost/user/repo"},
-		{"../path/to/repo.git/", "https://localhost/", "user/repo2", "", "https://localhost/user/path/to/repo.git"},
-		{"ssh://git@ssh.gitea.io:2222/go-gitea/gitea", "https://try.gitea.io/", "go-gitea/sdk", "ssh.gitea.io", "https://try.gitea.io/go-gitea/gitea"},
-	}
 
-	for _, kase := range kases {
+	wl := sf.SubmoduleWebLink(context.Background())
-		assert.EqualValues(t, kase.expect, getRefURL(kase.refURL, kase.prefixURL, kase.parentPath, kase.SSHDomain))
+	assert.Equal(t, "https://github.com/user/repo", wl.RepoWebLink)
-	}
+	assert.Equal(t, "https://github.com/user/repo/commit/aaaa", wl.CommitWebLink)
+
+	wl = sf.SubmoduleWebLink(context.Background(), "1111")
+	assert.Equal(t, "https://github.com/user/repo", wl.RepoWebLink)
+	assert.Equal(t, "https://github.com/user/repo/commit/1111", wl.CommitWebLink)
+
+	wl = sf.SubmoduleWebLink(context.Background(), "1111", "2222")
+	assert.Equal(t, "https://github.com/user/repo", wl.RepoWebLink)
+	assert.Equal(t, "https://github.com/user/repo/compare/1111...2222", wl.CommitWebLink)
+
+	wl = (*CommitSubmoduleFile)(nil).SubmoduleWebLink(context.Background())
+	assert.Nil(t, wl)
 }

modules/git/url/url.go

@@ -4,9 +4,15 @@
 package url
 
 import (
+	"context"
 	"fmt"
+	"net"
 	stdurl "net/url"
 	"strings"
+
+	"code.gitea.io/gitea/modules/httplib"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/util"
 )
 
 // ErrWrongURLFormat represents an error with wrong url format
@@ -90,3 +96,86 @@ func ParseGitURL(remote string) (*GitURL, error) {
 		extraMark: 2,
 	}, nil
 }
+
+type RepositoryURL struct {
+	GitURL *GitURL
+
+	// if the URL belongs to current Gitea instance, then the below fields have values
+	OwnerName     string
+	RepoName      string
+	RemainingPath string
+}
+
+// ParseRepositoryURL tries to parse a Git URL and extract the owner/repository name if it belongs to current Gitea instance.
+func ParseRepositoryURL(ctx context.Context, repoURL string) (*RepositoryURL, error) {
+	// possible urls for git:
+	//  https://my.domain/sub-path/<owner>/<repo>[.git]
+	//  git+ssh://user@my.domain/<owner>/<repo>[.git]
+	//  ssh://user@my.domain/<owner>/<repo>[.git]
+	//  user@my.domain:<owner>/<repo>[.git]
+	parsed, err := ParseGitURL(repoURL)
+	if err != nil {
+		return nil, err
+	}
+
+	ret := &RepositoryURL{}
+	ret.GitURL = parsed
+
+	fillPathParts := func(s string) {
+		s = strings.TrimPrefix(s, "/")
+		fields := strings.SplitN(s, "/", 3)
+		if len(fields) >= 2 {
+			ret.OwnerName = fields[0]
+			ret.RepoName = strings.TrimSuffix(fields[1], ".git")
+			if len(fields) == 3 {
+				ret.RemainingPath = "/" + fields[2]
+			}
+		}
+	}
+
+	if parsed.URL.Scheme == "http" || parsed.URL.Scheme == "https" {
+		if !httplib.IsCurrentGiteaSiteURL(ctx, repoURL) {
+			return ret, nil
+		}
+		fillPathParts(strings.TrimPrefix(parsed.URL.Path, setting.AppSubURL))
+	} else if parsed.URL.Scheme == "ssh" || parsed.URL.Scheme == "git+ssh" {
+		domainSSH := setting.SSH.Domain
+		domainCur := httplib.GuessCurrentHostDomain(ctx)
+		urlDomain, _, _ := net.SplitHostPort(parsed.URL.Host)
+		urlDomain = util.IfZero(urlDomain, parsed.URL.Host)
+		if urlDomain == "" {
+			return ret, nil
+		}
+		// check whether URL domain is the App domain
+		domainMatches := domainSSH == urlDomain
+		// check whether URL domain is current domain from context
+		domainMatches = domainMatches || (domainCur != "" && domainCur == urlDomain)
+		if domainMatches {
+			fillPathParts(parsed.URL.Path)
+		}
+	}
+	return ret, nil
+}
+
+// MakeRepositoryWebLink generates a web link (http/https) for a git repository (by guessing sometimes)
+func MakeRepositoryWebLink(repoURL *RepositoryURL) string {
+	if repoURL.OwnerName != "" {
+		return setting.AppSubURL + "/" + repoURL.OwnerName + "/" + repoURL.RepoName
+	}
+
+	// now, let's guess, for example:
+	// * git@github.com:owner/submodule.git
+	// * https://github.com/example/submodule1.git
+	if repoURL.GitURL.Scheme == "http" || repoURL.GitURL.Scheme == "https" {
+		return strings.TrimSuffix(repoURL.GitURL.String(), ".git")
+	} else if repoURL.GitURL.Scheme == "ssh" || repoURL.GitURL.Scheme == "git+ssh" {
+		hostname, _, _ := net.SplitHostPort(repoURL.GitURL.Host)
+		hostname = util.IfZero(hostname, repoURL.GitURL.Host)
+		urlPath := strings.TrimSuffix(repoURL.GitURL.Path, ".git")
+		urlPath = strings.TrimPrefix(urlPath, "/")
+		urlFull := fmt.Sprintf("https://%s/%s", hostname, urlPath)
+		urlFull = strings.TrimSuffix(urlFull, "/")
+		return urlFull
+	}
+	return ""
+}

modules/git/url/url_test.go

@@ -4,9 +4,15 @@
 package url
 
 import (
+	"context"
+	"net/http"
 	"net/url"
 	"testing"
 
+	"code.gitea.io/gitea/modules/httplib"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/test"
+
 	"github.com/stretchr/testify/assert"
 )
 
@@ -164,3 +170,98 @@ func TestParseGitURLs(t *testing.T) {
 		})
 	}
 }
+
+func TestParseRepositoryURL(t *testing.T) {
+	defer test.MockVariableValue(&setting.AppURL, "https://localhost:3000")()
+	defer test.MockVariableValue(&setting.SSH.Domain, "try.gitea.io")()
+
+	ctxURL, _ := url.Parse("https://gitea")
+	ctxReq := &http.Request{URL: ctxURL, Header: http.Header{}}
+	ctxReq.Host = ctxURL.Host
+	ctxReq.Header.Add("X-Forwarded-Proto", ctxURL.Scheme)
+	ctx := context.WithValue(context.Background(), httplib.RequestContextKey, ctxReq)
+	cases := []struct {
+		input                          string
+		ownerName, repoName, remaining string
+	}{
+		{input: "/user/repo"},
+
+		{input: "https://localhost:3000/user/repo", ownerName: "user", repoName: "repo"},
+		{input: "https://external:3000/user/repo"},
+
+		{input: "https://localhost:3000/user/repo.git/other", ownerName: "user", repoName: "repo", remaining: "/other"},
+
+		{input: "https://gitea/user/repo", ownerName: "user", repoName: "repo"},
+		{input: "https://gitea:3333/user/repo"},
+
+		{input: "ssh://try.gitea.io:2222/user/repo", ownerName: "user", repoName: "repo"},
+		{input: "ssh://external:2222/user/repo"},
+
+		{input: "git+ssh://user@try.gitea.io/user/repo.git", ownerName: "user", repoName: "repo"},
+		{input: "git+ssh://user@external/user/repo.git"},
+
+		{input: "root@try.gitea.io:user/repo.git", ownerName: "user", repoName: "repo"},
+		{input: "root@gitea:user/repo.git", ownerName: "user", repoName: "repo"},
+		{input: "root@external:user/repo.git"},
+	}
+
+	for _, c := range cases {
+		t.Run(c.input, func(t *testing.T) {
+			ret, _ := ParseRepositoryURL(ctx, c.input)
+			assert.Equal(t, c.ownerName, ret.OwnerName)
+			assert.Equal(t, c.repoName, ret.RepoName)
+			assert.Equal(t, c.remaining, ret.RemainingPath)
+		})
+	}
+
+	t.Run("WithSubpath", func(t *testing.T) {
+		defer test.MockVariableValue(&setting.AppURL, "https://localhost:3000/subpath")()
+		defer test.MockVariableValue(&setting.AppSubURL, "/subpath")()
+		cases = []struct {
+			input                          string
+			ownerName, repoName, remaining string
+		}{
+			{input: "https://localhost:3000/user/repo"},
+			{input: "https://localhost:3000/subpath/user/repo.git/other", ownerName: "user", repoName: "repo", remaining: "/other"},
+
+			{input: "ssh://try.gitea.io:2222/user/repo", ownerName: "user", repoName: "repo"},
+			{input: "ssh://external:2222/user/repo"},
+
+			{input: "git+ssh://user@try.gitea.io/user/repo.git", ownerName: "user", repoName: "repo"},
+			{input: "git+ssh://user@external/user/repo.git"},
+
+			{input: "root@try.gitea.io:user/repo.git", ownerName: "user", repoName: "repo"},
+			{input: "root@external:user/repo.git"},
+		}
+
+		for _, c := range cases {
+			t.Run(c.input, func(t *testing.T) {
+				ret, _ := ParseRepositoryURL(ctx, c.input)
+				assert.Equal(t, c.ownerName, ret.OwnerName)
+				assert.Equal(t, c.repoName, ret.RepoName)
+				assert.Equal(t, c.remaining, ret.RemainingPath)
+			})
+		}
+	})
+}
+
+func TestMakeRepositoryBaseLink(t *testing.T) {
+	defer test.MockVariableValue(&setting.AppURL, "https://localhost:3000/subpath")()
+	defer test.MockVariableValue(&setting.AppSubURL, "/subpath")()
+
+	u, err := ParseRepositoryURL(context.Background(), "https://localhost:3000/subpath/user/repo.git")
+	assert.NoError(t, err)
+	assert.Equal(t, "/subpath/user/repo", MakeRepositoryWebLink(u))
+
+	u, err = ParseRepositoryURL(context.Background(), "https://github.com/owner/repo.git")
+	assert.NoError(t, err)
+	assert.Equal(t, "https://github.com/owner/repo", MakeRepositoryWebLink(u))
+
+	u, err = ParseRepositoryURL(context.Background(), "git@github.com:owner/repo.git")
+	assert.NoError(t, err)
+	assert.Equal(t, "https://github.com/owner/repo", MakeRepositoryWebLink(u))
+
+	u, err = ParseRepositoryURL(context.Background(), "git+ssh://other:123/owner/repo.git")
+	assert.NoError(t, err)
+	assert.Equal(t, "https://other/owner/repo", MakeRepositoryWebLink(u))
+}

modules/repository/branch.go

@@ -6,6 +6,7 @@ package repository
 import (
 	"context"
 	"fmt"
+	"strings"
 
 	"code.gitea.io/gitea/models/db"
 	git_model "code.gitea.io/gitea/models/git"
@@ -51,6 +52,9 @@ func SyncRepoBranchesWithRepo(ctx context.Context, repo *repo_model.Repository,
 	{
 		branches, _, err := gitRepo.GetBranchNames(0, 0)
 		if err != nil {
+			if strings.Contains(err.Error(), "ref file is empty") {
+				return 0, nil
+			}
 			return 0, err
 		}
 		log.Trace("SyncRepoBranches[%s]: branches[%d]: %v", repo.FullName(), len(branches), branches)

options/locale/locale_en-US.ini

@@ -2628,6 +2628,9 @@ diff.image.overlay = Overlay
 diff.has_escaped = This line has hidden Unicode characters
 diff.show_file_tree = Show file tree
 diff.hide_file_tree = Hide file tree
+diff.submodule_added = Submodule %[1]s added at %[2]s
+diff.submodule_deleted = Submodule %[1]s deleted from %[2]s
+diff.submodule_updated = Submodule %[1]s updated: %[2]s
 
 releases.desc = Track project versions and downloads.
 release.releases = Releases

routers/web/repo/view.go

@@ -309,7 +309,6 @@ func renderDirectoryFiles(ctx *context.Context, timeout time.Duration) git.Entri
 	}
 
 	ctx.Data["TreeLink"] = treeLink
-	ctx.Data["SSHDomain"] = setting.SSH.Domain
 
 	return allEntries
 }

services/gitdiff/gitdiff.go

@@ -360,7 +360,6 @@ type DiffFile struct {
 	IsLFSFile                 bool
 	IsRenamed                 bool
 	IsAmbiguous               bool
-	IsSubmodule               bool
 	Sections                  []*DiffSection
 	IsIncomplete              bool
 	IsIncompleteLineTooLong   bool
@@ -372,6 +371,9 @@ type DiffFile struct {
 	Language                  string
 	Mode                      string
 	OldMode                   string
+
+	IsSubmodule       bool // if IsSubmodule==true, then there must be a SubmoduleDiffInfo
+	SubmoduleDiffInfo *SubmoduleDiffInfo
 }
 
 // GetType returns type of diff file.
@@ -609,9 +611,8 @@ parsingLoop:
 				if strings.HasPrefix(line, "new mode ") {
 					curFile.Mode = prepareValue(line, "new mode ")
 				}
-
 				if strings.HasSuffix(line, " 160000\n") {
-					curFile.IsSubmodule = true
+					curFile.IsSubmodule, curFile.SubmoduleDiffInfo = true, &SubmoduleDiffInfo{}
 				}
 			case strings.HasPrefix(line, "rename from "):
 				curFile.IsRenamed = true
@@ -646,17 +647,17 @@ parsingLoop:
 					curFile.Mode = prepareValue(line, "new file mode ")
 				}
 				if strings.HasSuffix(line, " 160000\n") {
-					curFile.IsSubmodule = true
+					curFile.IsSubmodule, curFile.SubmoduleDiffInfo = true, &SubmoduleDiffInfo{}
 				}
 			case strings.HasPrefix(line, "deleted"):
 				curFile.Type = DiffFileDel
 				curFile.IsDeleted = true
 				if strings.HasSuffix(line, " 160000\n") {
-					curFile.IsSubmodule = true
+					curFile.IsSubmodule, curFile.SubmoduleDiffInfo = true, &SubmoduleDiffInfo{}
 				}
 			case strings.HasPrefix(line, "index"):
 				if strings.HasSuffix(line, " 160000\n") {
-					curFile.IsSubmodule = true
+					curFile.IsSubmodule, curFile.SubmoduleDiffInfo = true, &SubmoduleDiffInfo{}
 				}
 			case strings.HasPrefix(line, "similarity index 100%"):
 				curFile.Type = DiffFileRename
@@ -915,6 +916,13 @@ func parseHunks(ctx context.Context, curFile *DiffFile, maxLines, maxLineCharact
 				}
 			}
 			curSection.Lines = append(curSection.Lines, diffLine)
+
+			// Parse submodule additions
+			if curFile.SubmoduleDiffInfo != nil {
+				if ref, found := bytes.CutPrefix(lineBytes, []byte("+Subproject commit ")); found {
+					curFile.SubmoduleDiffInfo.NewRefID = string(bytes.TrimSpace(ref))
+				}
+			}
 		case '-':
 			curFileLinesCount++
 			curFile.Deletion++
@@ -936,6 +944,13 @@ func parseHunks(ctx context.Context, curFile *DiffFile, maxLines, maxLineCharact
 				lastLeftIdx = len(curSection.Lines)
 			}
 			curSection.Lines = append(curSection.Lines, diffLine)
+
+			// Parse submodule deletion
+			if curFile.SubmoduleDiffInfo != nil {
+				if ref, found := bytes.CutPrefix(lineBytes, []byte("-Subproject commit ")); found {
+					curFile.SubmoduleDiffInfo.PreviousRefID = string(bytes.TrimSpace(ref))
+				}
+			}
 		case ' ':
 			curFileLinesCount++
 			if maxLines > -1 && curFileLinesCount >= maxLines {
@@ -1195,6 +1210,11 @@ func GetDiff(ctx context.Context, gitRepo *git.Repository, opts *DiffOptions, fi
 			}
 		}
 
+		// Populate Submodule URLs
+		if diffFile.SubmoduleDiffInfo != nil {
+			diffFile.SubmoduleDiffInfo.PopulateURL(diffFile, beforeCommit, commit)
+		}
+
 		if !isVendored.Has() {
 			isVendored = optional.Some(analyze.IsVendor(diffFile.Name))
 		}

services/gitdiff/submodule.go

@@ -0,0 +1,65 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package gitdiff
+
+import (
+	"context"
+	"html/template"
+
+	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/htmlutil"
+	"code.gitea.io/gitea/modules/log"
+)
+
+type SubmoduleDiffInfo struct {
+	SubmoduleName string
+	SubmoduleFile *git.CommitSubmoduleFile // it might be nil if the submodule is not found or unable to parse
+	NewRefID      string
+	PreviousRefID string
+}
+
+func (si *SubmoduleDiffInfo) PopulateURL(diffFile *DiffFile, leftCommit, rightCommit *git.Commit) {
+	si.SubmoduleName = diffFile.Name
+	submoduleCommit := rightCommit // If the submodule is added or updated, check at the right commit
+	if diffFile.IsDeleted {
+		submoduleCommit = leftCommit // If the submodule is deleted, check at the left commit
+	}
+	if submoduleCommit == nil {
+		return
+	}
+
+	submodule, err := submoduleCommit.GetSubModule(diffFile.GetDiffFileName())
+	if err != nil {
+		log.Error("Unable to PopulateURL for submodule %q: GetSubModule: %v", diffFile.GetDiffFileName(), err)
+		return // ignore the error, do not cause 500 errors for end users
+	}
+	if submodule != nil {
+		si.SubmoduleFile = git.NewCommitSubmoduleFile(submodule.URL, submoduleCommit.ID.String())
+	}
+}
+
+func (si *SubmoduleDiffInfo) CommitRefIDLinkHTML(ctx context.Context, commitID string) template.HTML {
+	webLink := si.SubmoduleFile.SubmoduleWebLink(ctx, commitID)
+	if webLink == nil {
+		return htmlutil.HTMLFormat("%s", base.ShortSha(commitID))
+	}
+	return htmlutil.HTMLFormat(`<a href="%s">%s</a>`, webLink.CommitWebLink, base.ShortSha(commitID))
+}
+
+func (si *SubmoduleDiffInfo) CompareRefIDLinkHTML(ctx context.Context) template.HTML {
+	webLink := si.SubmoduleFile.SubmoduleWebLink(ctx, si.PreviousRefID, si.NewRefID)
+	if webLink == nil {
+		return htmlutil.HTMLFormat("%s...%s", base.ShortSha(si.PreviousRefID), base.ShortSha(si.NewRefID))
+	}
+	return htmlutil.HTMLFormat(`<a href="%s">%s...%s</a>`, webLink.CommitWebLink, base.ShortSha(si.PreviousRefID), base.ShortSha(si.NewRefID))
+}
+
+func (si *SubmoduleDiffInfo) SubmoduleRepoLinkHTML(ctx context.Context) template.HTML {
+	webLink := si.SubmoduleFile.SubmoduleWebLink(ctx)
+	if webLink == nil {
+		return htmlutil.HTMLFormat("%s", si.SubmoduleName)
+	}
+	return htmlutil.HTMLFormat(`<a href="%s">%s</a>`, webLink.RepoWebLink, si.SubmoduleName)
+}

services/gitdiff/submodule_test.go

@@ -0,0 +1,236 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package gitdiff
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/setting"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestParseSubmoduleInfo(t *testing.T) {
+	type testcase struct {
+		name    string
+		gitdiff string
+		infos   map[int]SubmoduleDiffInfo
+	}
+
+	tests := []testcase{
+		{
+			name: "added",
+			gitdiff: `diff --git a/.gitmodules b/.gitmodules
+new file mode 100644
+index 0000000..4ac13c1
+--- /dev/null
++++ b/.gitmodules
+@@ -0,0 +1,3 @@
++[submodule "gitea-mirror"]
++	path = gitea-mirror
++	url = https://gitea.com/gitea/gitea-mirror
+diff --git a/gitea-mirror b/gitea-mirror
+new file mode 160000
+index 0000000..68972a9
+--- /dev/null
++++ b/gitea-mirror
+@@ -0,0 +1 @@
++Subproject commit 68972a994719ae5c74e28d8fa82fa27c23399bc8
+`,
+			infos: map[int]SubmoduleDiffInfo{
+				1: {NewRefID: "68972a994719ae5c74e28d8fa82fa27c23399bc8"},
+			},
+		},
+		{
+			name: "updated",
+			gitdiff: `diff --git a/gitea-mirror b/gitea-mirror
+index 68972a9..c8ffe77 160000
+--- a/gitea-mirror
++++ b/gitea-mirror
+@@ -1 +1 @@
+-Subproject commit 68972a994719ae5c74e28d8fa82fa27c23399bc8
++Subproject commit c8ffe777cf9c5bb47a38e3e0b3a3b5de6cd8813d
+`,
+			infos: map[int]SubmoduleDiffInfo{
+				0: {
+					PreviousRefID: "68972a994719ae5c74e28d8fa82fa27c23399bc8",
+					NewRefID:      "c8ffe777cf9c5bb47a38e3e0b3a3b5de6cd8813d",
+				},
+			},
+		},
+		{
+			name: "rename",
+			gitdiff: `diff --git a/.gitmodules b/.gitmodules
+index 4ac13c1..0510edd 100644
+--- a/.gitmodules
++++ b/.gitmodules
+@@ -1,3 +1,3 @@
+ [submodule "gitea-mirror"]
+-	path = gitea-mirror
++	path = gitea
+ 	url = https://gitea.com/gitea/gitea-mirror
+diff --git a/gitea-mirror b/gitea
+similarity index 100%
+rename from gitea-mirror
+rename to gitea
+`,
+		},
+		{
+			name: "deleted",
+			gitdiff: `diff --git a/.gitmodules b/.gitmodules
+index 0510edd..e69de29 100644
+--- a/.gitmodules
++++ b/.gitmodules
+@@ -1,3 +0,0 @@
+-[submodule "gitea-mirror"]
+-	path = gitea
+-	url = https://gitea.com/gitea/gitea-mirror
+diff --git a/gitea b/gitea
+deleted file mode 160000
+index c8ffe77..0000000
+--- a/gitea
++++ /dev/null
+@@ -1 +0,0 @@
+-Subproject commit c8ffe777cf9c5bb47a38e3e0b3a3b5de6cd8813d
+`,
+			infos: map[int]SubmoduleDiffInfo{
+				1: {
+					PreviousRefID: "c8ffe777cf9c5bb47a38e3e0b3a3b5de6cd8813d",
+				},
+			},
+		},
+		{
+			name: "moved and updated",
+			gitdiff: `diff --git a/.gitmodules b/.gitmodules
+index 0510edd..bced3d8 100644
+--- a/.gitmodules
++++ b/.gitmodules
+@@ -1,3 +1,3 @@
+ [submodule "gitea-mirror"]
+-	path = gitea
++	path = gitea-1.22
+ 	url = https://gitea.com/gitea/gitea-mirror
+diff --git a/gitea b/gitea
+deleted file mode 160000
+index c8ffe77..0000000
+--- a/gitea
++++ /dev/null
+@@ -1 +0,0 @@
+-Subproject commit c8ffe777cf9c5bb47a38e3e0b3a3b5de6cd8813d
+diff --git a/gitea-1.22 b/gitea-1.22
+new file mode 160000
+index 0000000..8eefa1f
+--- /dev/null
++++ b/gitea-1.22
+@@ -0,0 +1 @@
++Subproject commit 8eefa1f6dedf2488db2c9e12c916e8e51f673160
+`,
+			infos: map[int]SubmoduleDiffInfo{
+				1: {
+					PreviousRefID: "c8ffe777cf9c5bb47a38e3e0b3a3b5de6cd8813d",
+				},
+				2: {
+					NewRefID: "8eefa1f6dedf2488db2c9e12c916e8e51f673160",
+				},
+			},
+		},
+		{
+			name: "converted to file",
+			gitdiff: `diff --git a/.gitmodules b/.gitmodules
+index 0510edd..e69de29 100644
+--- a/.gitmodules
++++ b/.gitmodules
+@@ -1,3 +0,0 @@
+-[submodule "gitea-mirror"]
+-	path = gitea
+-	url = https://gitea.com/gitea/gitea-mirror
+diff --git a/gitea b/gitea
+deleted file mode 160000
+index c8ffe77..0000000
+--- a/gitea
++++ /dev/null
+@@ -1 +0,0 @@
+-Subproject commit c8ffe777cf9c5bb47a38e3e0b3a3b5de6cd8813d
+diff --git a/gitea b/gitea
+new file mode 100644
+index 0000000..33a9488
+--- /dev/null
++++ b/gitea
+@@ -0,0 +1 @@
++example
+`,
+			infos: map[int]SubmoduleDiffInfo{
+				1: {
+					PreviousRefID: "c8ffe777cf9c5bb47a38e3e0b3a3b5de6cd8813d",
+				},
+			},
+		},
+		{
+			name: "converted to submodule",
+			gitdiff: `diff --git a/.gitmodules b/.gitmodules
+index e69de29..14ee267 100644
+--- a/.gitmodules
++++ b/.gitmodules
+@@ -0,0 +1,3 @@
++[submodule "gitea"]
++	path = gitea
++	url = https://gitea.com/gitea/gitea-mirror
+diff --git a/gitea b/gitea
+deleted file mode 100644
+index 33a9488..0000000
+--- a/gitea
++++ /dev/null
+@@ -1 +0,0 @@
+-example
+diff --git a/gitea b/gitea
+new file mode 160000
+index 0000000..68972a9
+--- /dev/null
++++ b/gitea
+@@ -0,0 +1 @@
++Subproject commit 68972a994719ae5c74e28d8fa82fa27c23399bc8
+`,
+			infos: map[int]SubmoduleDiffInfo{
+				2: {
+					NewRefID: "68972a994719ae5c74e28d8fa82fa27c23399bc8",
+				},
+			},
+		},
+	}
+
+	for _, testcase := range tests {
+		testcase := testcase
+		t.Run(testcase.name, func(t *testing.T) {
+			diff, err := ParsePatch(db.DefaultContext, setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, strings.NewReader(testcase.gitdiff), "")
+			assert.NoError(t, err)
+
+			for i, expected := range testcase.infos {
+				actual := diff.Files[i]
+				assert.NotNil(t, actual)
+				assert.Equal(t, expected, *actual.SubmoduleDiffInfo)
+			}
+		})
+	}
+}
+
+func TestSubmoduleInfo(t *testing.T) {
+	sdi := &SubmoduleDiffInfo{
+		SubmoduleName: "name",
+		PreviousRefID: "aaaa",
+		NewRefID:      "bbbb",
+	}
+	ctx := context.Background()
+	assert.EqualValues(t, "1111", sdi.CommitRefIDLinkHTML(ctx, "1111"))
+	assert.EqualValues(t, "aaaa...bbbb", sdi.CompareRefIDLinkHTML(ctx))
+	assert.EqualValues(t, "name", sdi.SubmoduleRepoLinkHTML(ctx))
+
+	sdi.SubmoduleFile = git.NewCommitSubmoduleFile("https://github.com/owner/repo", "1234")
+	assert.EqualValues(t, `<a href="https://github.com/owner/repo/commit/1111">1111</a>`, sdi.CommitRefIDLinkHTML(ctx, "1111"))
+	assert.EqualValues(t, `<a href="https://github.com/owner/repo/compare/aaaa...bbbb">aaaa...bbbb</a>`, sdi.CompareRefIDLinkHTML(ctx))
+	assert.EqualValues(t, `<a href="https://github.com/owner/repo">name</a>`, sdi.SubmoduleRepoLinkHTML(ctx))
+}

templates/repo/diff/box.tmpl

@@ -58,7 +58,7 @@
 			</div>
 		{{end}}
 		<script id="diff-data-script" type="module">
-			const diffDataFiles = [{{range $i, $file := .Diff.Files}}{Name:"{{$file.Name}}",NameHash:"{{$file.NameHash}}",Type:{{$file.Type}},IsBin:{{$file.IsBin}},Addition:{{$file.Addition}},Deletion:{{$file.Deletion}},IsViewed:{{$file.IsViewed}}},{{end}}];
+			const diffDataFiles = [{{range $i, $file := .Diff.Files}}{Name:"{{$file.Name}}",NameHash:"{{$file.NameHash}}",Type:{{$file.Type}},IsBin:{{$file.IsBin}},IsSubmodule:{{$file.IsSubmodule}},Addition:{{$file.Addition}},Deletion:{{$file.Deletion}},IsViewed:{{$file.IsViewed}}},{{end}}];
 			const diffData = {
 				isIncomplete: {{.Diff.IsIncomplete}},
 				tooManyFilesMessage: "{{ctx.Locale.Tr "repo.diff.too_many_files"}}",
@@ -161,13 +161,14 @@
 										<input type="checkbox" name="{{$file.GetDiffFileName}}" autocomplete="off"{{if $file.IsViewed}} checked{{end}}> {{ctx.Locale.Tr "repo.pulls.has_viewed_file"}}
 									</label>
 								{{end}}
+								{{if not $file.IsSubmodule}}
 									<button class="btn diff-header-popup-btn tw-p-1">{{svg "octicon-kebab-horizontal" 18}}</button>
 									<div class="tippy-target">
-									{{if not (or $file.IsIncomplete $file.IsBin $file.IsSubmodule)}}
+										{{if not (or $file.IsIncomplete $file.IsBin)}}
 											<button class="unescape-button item" data-unicode-content-selector="#diff-{{$file.NameHash}}">{{ctx.Locale.Tr "repo.unescape_control_characters"}}</button>
 											<button class="escape-button tw-hidden item" data-unicode-content-selector="#diff-{{$file.NameHash}}">{{ctx.Locale.Tr "repo.escape_control_characters"}}</button>
 										{{end}}
-									{{if and (not $file.IsSubmodule) (not $.PageIsWiki)}}
+										{{if not $.PageIsWiki}}
 											{{if $file.IsDeleted}}
 												<a class="item" rel="nofollow" href="{{$.BeforeSourcePath}}/{{PathEscapeSegments .Name}}">{{ctx.Locale.Tr "repo.diff.view_file"}}</a>
 											{{else}}
@@ -178,6 +179,7 @@
 											{{end}}
 										{{end}}
 									</div>
+								{{end}}
 							</div>
 						</h4>
 						<div class="diff-file-body ui attached unstackable table segment" {{if and $file.IsViewed $.IsShowingAllCommits}}data-folded="true"{{end}}>
@@ -195,6 +197,17 @@
 											{{ctx.Locale.Tr "repo.diff.bin_not_shown"}}
 										{{end}}
 									</div>
+								{{else if $file.SubmoduleDiffInfo}}
+									<div class="tw-p-3">{{svg "octicon-file-submodule"}} {{$submoduleDiffInfo := $file.SubmoduleDiffInfo -}}
+										{{- $submoduleName := $submoduleDiffInfo.SubmoduleRepoLinkHTML ctx -}}
+										{{- if $file.IsDeleted -}}
+											{{- ctx.Locale.Tr "repo.diff.submodule_deleted" $submoduleName ($submoduleDiffInfo.CommitRefIDLinkHTML ctx $submoduleDiffInfo.PreviousRefID) -}}
+										{{- else if $file.IsCreated -}}
+											{{- ctx.Locale.Tr "repo.diff.submodule_added" $submoduleName ($submoduleDiffInfo.CommitRefIDLinkHTML ctx $submoduleDiffInfo.NewRefID) -}}
+										{{- else -}}
+											{{- ctx.Locale.Tr "repo.diff.submodule_updated" $submoduleName ($submoduleDiffInfo.CompareRefIDLinkHTML ctx) -}}
+										{{end}}
+									</div>
 								{{else}}
 									<table class="chroma" data-new-comment-url="{{$.Issue.Link}}/files/reviews/new_comment" data-path="{{$file.Name}}">
 										{{if $.IsSplitStyle}}

templates/repo/view_list.tmpl

@@ -13,15 +13,15 @@
 		<div class="repo-file-item">
 			{{$entry := $item.Entry}}
 			{{$commit := $item.Commit}}
-			{{$subModuleFile := $item.SubModuleFile}}
+			{{$submoduleFile := $item.SubmoduleFile}}
 			<div class="repo-file-cell name {{if not $commit}}notready{{end}}">
 				{{if $entry.IsSubModule}}
 					{{svg "octicon-file-submodule"}}
-					{{$refURL := $subModuleFile.RefURL AppUrl $.Repository.FullName $.SSHDomain}} {{/* FIXME: the usage of AppUrl seems incorrect, it would be fixed in the future, use AppSubUrl instead */}}
+					{{$submoduleLink := $submoduleFile.SubmoduleWebLink ctx}}
-					{{if $refURL}}
+					{{if $submoduleLink}}
-						<a class="muted" href="{{$refURL}}">{{$entry.Name}}</a> <span class="at">@</span> <a href="{{$refURL}}/commit/{{PathEscape $subModuleFile.RefID}}">{{ShortSha $subModuleFile.RefID}}</a>
+						<a class="muted" href="{{$submoduleLink.RepoWebLink}}">{{$entry.Name}}</a> <span class="at">@</span> <a href="{{$submoduleLink.CommitWebLink}}">{{ShortSha $submoduleFile.RefID}}</a>
 					{{else}}
-						{{$entry.Name}} <span class="at">@</span> {{ShortSha $subModuleFile.RefID}}
+						{{$entry.Name}} <span class="at">@</span> {{ShortSha $submoduleFile.RefID}}
 					{{end}}
 				{{else}}
 					{{if $entry.IsDir}}

web_src/js/components/DiffFileTreeItem.vue

@@ -8,6 +8,7 @@ type File = {
   NameHash: string;
   Type: number;
   IsViewed: boolean;
+  IsSubmodule: boolean;
 }
 
 type Item = {
@@ -34,6 +35,13 @@ function getIconForDiffType(pType) {
   };
   return diffTypes[pType];
 }
+
+function fileIcon(file) {
+  if (file.IsSubmodule) {
+    return 'octicon-file-submodule';
+  }
+  return 'octicon-file';
+}
 </script>
 
 <template>
@@ -44,7 +52,7 @@ function getIconForDiffType(pType) {
     :title="item.name" :href="'#diff-' + item.file.NameHash"
   >
     <!-- file -->
-    <SvgIcon name="octicon-file"/>
+    <SvgIcon :name="fileIcon(item.file)"/>
     <span class="gt-ellipsis tw-flex-1">{{ item.name }}</span>
     <SvgIcon :name="getIconForDiffType(item.file.Type).name" :class="getIconForDiffType(item.file.Type).classes"/>
   </a>

web_src/js/svg.ts

@@ -28,6 +28,7 @@ import octiconEye from '../../public/assets/img/svg/octicon-eye.svg';
 import octiconFile from '../../public/assets/img/svg/octicon-file.svg';
 import octiconFileDirectoryFill from '../../public/assets/img/svg/octicon-file-directory-fill.svg';
 import octiconFileDirectoryOpenFill from '../../public/assets/img/svg/octicon-file-directory-open-fill.svg';
+import octiconFileSubmodule from '../../public/assets/img/svg/octicon-file-submodule.svg';
 import octiconFilter from '../../public/assets/img/svg/octicon-filter.svg';
 import octiconGear from '../../public/assets/img/svg/octicon-gear.svg';
 import octiconGitBranch from '../../public/assets/img/svg/octicon-git-branch.svg';
@@ -104,6 +105,7 @@ const svgs = {
   'octicon-file': octiconFile,
   'octicon-file-directory-fill': octiconFileDirectoryFill,
   'octicon-file-directory-open-fill': octiconFileDirectoryOpenFill,
+  'octicon-file-submodule': octiconFileSubmodule,
   'octicon-filter': octiconFilter,
   'octicon-gear': octiconGear,
   'octicon-git-branch': octiconGitBranch,