Url preview endpoint

go.mod

@@ -14,6 +14,7 @@ require (
 	github.com/docker/go-connections v0.5.0
 	github.com/eyedeekay/goSam v0.32.54
 	github.com/eyedeekay/onramp v0.33.8
+	github.com/foxcpp/go-mockdns v1.1.0
 	github.com/getsentry/sentry-go v0.14.0
 	github.com/gologme/log v1.3.0
 	github.com/google/go-cmp v0.7.0
@@ -49,6 +50,7 @@ require (
 	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56
 	golang.org/x/image v0.27.0
 	golang.org/x/mobile v0.0.0-20240520174638-fa72addaaa1b
+	golang.org/x/net v0.41.0
 	golang.org/x/sync v0.16.0
 	golang.org/x/term v0.33.0
 	gopkg.in/yaml.v2 v2.4.0
@@ -107,6 +109,7 @@ require (
 	github.com/klauspost/compress v1.18.0 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/miekg/dns v1.1.66 // indirect
 	github.com/minio/highwayhash v1.0.3 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
 	github.com/moby/term v0.5.0 // indirect
@@ -143,7 +146,6 @@ require (
 	go.opentelemetry.io/otel/trace v1.32.0 // indirect
 	go.uber.org/mock v0.4.0 // indirect
 	golang.org/x/mod v0.25.0 // indirect
-	golang.org/x/net v0.41.0 // indirect
 	golang.org/x/sys v0.34.0 // indirect
 	golang.org/x/text v0.27.0 // indirect
 	golang.org/x/time v0.12.0 // indirect

go.sum

@@ -108,6 +108,8 @@ github.com/eyedeekay/sam3 v0.33.8/go.mod h1:ytbwLYLJlW6UA92Ffyc6oioWTKnGeeUMr9CL
 github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
 github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/fogleman/gg v1.2.1-0.20190220221249-0403632d5b90/go.mod h1:R/bRT+9gY/C5z7JzPU0zXsXHKM4/ayA+zqcVNZzPa1k=
+github.com/foxcpp/go-mockdns v1.1.0 h1:jI0rD8M0wuYAxL7r/ynTrCQQq0BVqfB99Vgk7DlmewI=
+github.com/foxcpp/go-mockdns v1.1.0/go.mod h1:IhLeSFGed3mJIAXPH2aiRQB+kqz7oqu8ld2qVbOu7Wk=
 github.com/frankban/quicktest v1.0.0/go.mod h1:R98jIehRai+d1/3Hv2//jOVCTJhW1VBavT6B6CuGq2k=
 github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
 github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
@@ -237,10 +239,6 @@ github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91 h1:s7fexw
 github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91/go.mod h1:e+cg2q7C7yE5QnAXgzo512tgFh1RbQLC0+jozuegKgo=
 github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530 h1:kHKxCOLcHH8r4Fzarl4+Y3K5hjothkVW5z7T1dUM11U=
 github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530/go.mod h1:/gBX06Kw0exX1HrwmoBibFA98yBk/jxKpGVeyQbff+s=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20250813150445-9f5070a65744 h1:5GvC2FD9O/PhuyY95iJQdNYHbDioEhMWdeMP9maDUL8=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20250813150445-9f5070a65744/go.mod h1:b6KVfDjXjA5Q7vhpOaMqIhFYvu5BuFVZixlNeTV/CLc=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20250814102638-60b9d3e5b634 h1:5MDrrj6hsTEW7Hv7rnWtSUQ4T4SUncFWQQG7vlrXnWw=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20250814102638-60b9d3e5b634/go.mod h1:b6KVfDjXjA5Q7vhpOaMqIhFYvu5BuFVZixlNeTV/CLc=
 github.com/matrix-org/gomatrixserverlib v0.0.0-20250815065806-6697d93cbcba h1:vUUjTOXZ/bYdF/SmJPH8HZ/UTmvw+ldngFKVLElmn+I=
 github.com/matrix-org/gomatrixserverlib v0.0.0-20250815065806-6697d93cbcba/go.mod h1:b6KVfDjXjA5Q7vhpOaMqIhFYvu5BuFVZixlNeTV/CLc=
 github.com/matrix-org/pinecone v0.11.1-0.20230810010612-ea4c33717fd7 h1:6t8kJr8i1/1I5nNttw6nn1ryQJgzVlBmSGgPiiaTdw4=
@@ -257,6 +255,7 @@ github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWE
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-sqlite3 v1.14.28 h1:ThEiQrnbtumT+QMknw63Befp/ce/nUPgBPMlRFEum7A=
 github.com/mattn/go-sqlite3 v1.14.28/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
+github.com/miekg/dns v1.1.57/go.mod h1:uqRjCRUuEAA6qsOiJvDd+CFo/vW+y5WR6SNmHE55hZk=
 github.com/miekg/dns v1.1.66 h1:FeZXOS3VCVsKnEAd+wBkjMC3D2K+ww66Cq3VnCINuJE=
 github.com/miekg/dns v1.1.66/go.mod h1:jGFzBsSNbJw6z1HYut1RKBKHA9PBdxeHrZG8J+gC2WE=
 github.com/minio/highwayhash v1.0.3 h1:kbnuUMoHYyVl7szWjSxJnxw11k2U709jqFPPmIUyD6Q=
@@ -377,6 +376,7 @@ github.com/yggdrasil-network/yggquic v0.0.0-20241212194307-0d495106021f h1:nqinj
 github.com/yggdrasil-network/yggquic v0.0.0-20241212194307-0d495106021f/go.mod h1:TVCKOUWiXR9cAqr3eDpKvXkVkTph38xwk0wjcvfrtKI=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.etcd.io/bbolt v1.4.0 h1:TU77id3TnN/zKr7CO/uk+fBCwF2jGcMuw2B/FMAzYIk=
 go.etcd.io/bbolt v1.4.0/go.mod h1:AsD+OCi/qPN1giOX1aiLAha3o1U8rAz65bvN4j0sRuk=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.53.0 h1:4K4tsIXefpVJtvA/8srF4V4y0akAoPHkIslgAkjixJA=
@@ -405,6 +405,10 @@ golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 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 v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
+golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
+golang.org/x/crypto v0.15.0/go.mod h1:4ChreQoLWfG3xLDer1WdlH5NdlQ3+mwnQq1YTKY+72g=
 golang.org/x/crypto v0.40.0 h1:r4x+VvoG5Fm+eJcxMaY8CQM7Lb0l1lsmjGBQ6s8BfKM=
 golang.org/x/crypto v0.40.0/go.mod h1:Qr1vMER5WyS2dfPHAlsOj01wgLbsyWtFn/aY+5+ZdxY=
 golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -425,6 +429,10 @@ golang.org/x/mobile v0.0.0-20240520174638-fa72addaaa1b/go.mod h1:EiXZlVfUTaAyySF
 golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+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 v0.14.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/mod v0.25.0 h1:n7a+ZbQKQA/Ysbyb0/6IbB1H/X41mKgbhfv7AfG/44w=
 golang.org/x/mod v0.25.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
@@ -433,11 +441,22 @@ golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+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 v0.17.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
+golang.org/x/net v0.18.0/go.mod h1:/czyP5RqHAH4odGYxBJ1qz0+CE5WZ+2j1YgoEo8F2jQ=
 golang.org/x/net v0.41.0 h1:vBTly1HeNPEn3wtREYfy4GZ/NECgw2Cnl+nK6Nz3uvw=
 golang.org/x/net v0.41.0/go.mod h1:B/K4NNqkfmg07DQYrbwvSluqCJOOXwUjeb/5lOisjbA=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
+golang.org/x/sync v0.4.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
+golang.org/x/sync v0.5.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=
 golang.org/x/sync v0.16.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -449,22 +468,40 @@ golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 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 v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.34.0 h1:H5Y5sJ2L2JRdyv7ROF1he/lPdvFsd0mJHFw2ThKHxLA=
 golang.org/x/sys v0.34.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 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 v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
+golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
+golang.org/x/term v0.13.0/go.mod h1:LTmsnFJwVN6bCy1rVCoS+qHT1HhALEFxKncY3WNNh4U=
+golang.org/x/term v0.14.0/go.mod h1:TySc+nGkYR6qt8km8wUhuFRTVSMIX3XPR58y2lC8vww=
 golang.org/x/term v0.33.0 h1:NuFncQrRcaRvVmgRkvM3j/F00gWIAlcmlB8ACEKmGIg=
 golang.org/x/term v0.33.0/go.mod h1:s18+ql9tYWp1IfpV9DmCtQDDSRBUjKaw9M1eAv5UeF0=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 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 v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+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=
 golang.org/x/text v0.27.0 h1:4fGWRpyh641NLlecmyl4LOe6yDdfaYNrGb2zdfo4JV4=
 golang.org/x/text v0.27.0/go.mod h1:1D28KMCvyooCX9hBiosv5Tz/+YLxj0j7XhWjpSUF7CU=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -477,6 +514,10 @@ golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+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 v0.15.0/go.mod h1:hpksKq4dtpQWS1uQ61JkdqWM3LscIS6Slf+VVkm+wQk=
 golang.org/x/tools v0.34.0 h1:qIpSLOxeCYGg9TrcJokLBG4KFA6d795g0xkBkiESGlo=
 golang.org/x/tools v0.34.0/go.mod h1:pAP9OwEaY1CAW3HOmg3hLZC5Z0CCmzjAF2UQMSqNARg=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

internal/netcontext.go

@@ -0,0 +1,76 @@
+package internal
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"syscall"
+	"time"
+)
+
+var (
+	ErrDeniedAddress = fmt.Errorf("address is denied")
+)
+
+func GetDialer(allowNetworks []string, denyNetworks []string, dialTimeout time.Duration) *net.Dialer {
+	if len(allowNetworks) == 0 && len(denyNetworks) == 0 {
+		return &net.Dialer{
+			Timeout: dialTimeout,
+		}
+	}
+
+	return &net.Dialer{
+		Timeout:        time.Second * 5,
+		ControlContext: allowDenyNetworksControl(allowNetworks, denyNetworks),
+	}
+}
+
+// allowDenyNetworksControl is used to allow/deny access to certain networks
+func allowDenyNetworksControl(allowNetworks, denyNetworks []string) func(_ context.Context, network string, address string, conn syscall.RawConn) error {
+	return func(_ context.Context, network string, address string, conn syscall.RawConn) error {
+		if network != "tcp4" && network != "tcp6" {
+			return fmt.Errorf("%s is not a safe network type", network)
+		}
+
+		host, _, err := net.SplitHostPort(address)
+		if err != nil {
+			return fmt.Errorf("%s is not a valid host/port pair: %s", address, err)
+		}
+
+		ipaddress := net.ParseIP(host)
+		if ipaddress == nil {
+			return fmt.Errorf("%s is not a valid IP address", host)
+		}
+
+		if !isAllowed(ipaddress, allowNetworks, denyNetworks) {
+			return ErrDeniedAddress
+		}
+
+		return nil // allow connection
+	}
+}
+
+func isAllowed(ip net.IP, allowCIDRs []string, denyCIDRs []string) bool {
+	if inRange(ip, denyCIDRs) {
+		return false
+	}
+	if inRange(ip, allowCIDRs) {
+		return true
+	}
+	return false // "should never happen"
+}
+
+func inRange(ip net.IP, CIDRs []string) bool {
+	for i := 0; i < len(CIDRs); i++ {
+		cidr := CIDRs[i]
+		_, network, err := net.ParseCIDR(cidr)
+		if err != nil {
+			return false
+		}
+		if network.Contains(ip) {
+			return true
+		}
+	}
+
+	return false
+}

mediaapi/fileutils/fileutils.go

@@ -153,6 +153,10 @@ func moveFile(src types.Path, dst types.Path) error {
 	return nil
 }
 
+func MoveFile(src types.Path, dst types.Path) error {
+	return moveFile(src, dst)
+}
+
 func createTempFileWriter(absBasePath config.Path) (*bufio.Writer, *os.File, types.Path, error) {
 	tmpDir, err := createTempDir(absBasePath)
 	if err != nil {

mediaapi/routing/download.go

@@ -308,10 +308,11 @@ func (r *downloadRequest) respondFromLocalFile(
 		return nil, fmt.Errorf("fileutils.GetPathFromBase64Hash: %w", err)
 	}
 	file, err := os.Open(filePath)
-	defer file.Close() // nolint: errcheck, staticcheck, megacheck
 	if err != nil {
 		return nil, fmt.Errorf("os.Open: %w", err)
 	}
+	defer file.Close() // nolint: errcheck, staticcheck, megacheck
+
 	stat, err := file.Stat()
 	if err != nil {
 		return nil, fmt.Errorf("file.Stat: %w", err)

mediaapi/routing/routing.go

@@ -8,10 +8,13 @@ package routing
 
 import (
 	"encoding/json"
+	"net"
 	"net/http"
 	"strings"
+	"time"
 
 	"github.com/element-hq/dendrite/federationapi/routing"
+	"github.com/element-hq/dendrite/internal"
 	"github.com/element-hq/dendrite/internal/httputil"
 	"github.com/element-hq/dendrite/mediaapi/storage"
 	"github.com/element-hq/dendrite/mediaapi/types"
@@ -88,6 +91,7 @@ func Setup(
 		MXCToResult: map[string]*types.RemoteRequestResult{},
 	}
 
+	// v1 url_preview endpoint requiring auth
 	downloadHandler := makeDownloadAPI("download_unauthed", &cfg.MediaAPI, rateLimits, db, client, federationClient, activeRemoteRequests, activeThumbnailGeneration, false)
 	v3mux.Handle("/download/{serverName}/{mediaId}", downloadHandler).Methods(http.MethodGet, http.MethodOptions)
 	v3mux.Handle("/download/{serverName}/{mediaId}/{downloadName}", downloadHandler).Methods(http.MethodGet, http.MethodOptions)
@@ -102,6 +106,15 @@ func Setup(
 	v1mux.Handle("/download/{serverName}/{mediaId}", downloadHandlerAuthed).Methods(http.MethodGet, http.MethodOptions)
 	v1mux.Handle("/download/{serverName}/{mediaId}/{downloadName}", downloadHandlerAuthed).Methods(http.MethodGet, http.MethodOptions)
 
+	var dialer *net.Dialer
+	if cfg.FederationAPI.AllowNetworkCIDRs != nil || cfg.FederationAPI.DenyNetworkCIDRs != nil {
+		dialer = internal.GetDialer(cfg.FederationAPI.AllowNetworkCIDRs, cfg.FederationAPI.DenyNetworkCIDRs, time.Duration(cfg.MediaAPI.UrlPreviewTimeout))
+	}
+	urlPreviewHandler := httputil.MakeAuthAPI("preview_url", userAPI, makeUrlPreviewHandler(&cfg.MediaAPI, dialer, rateLimits, db, activeThumbnailGeneration))
+	v1mux.Handle("/preview_url", urlPreviewHandler).Methods(http.MethodGet, http.MethodOptions)
+	// That method is deprecated according to spec but still in use
+	v3mux.Handle("/preview_url", urlPreviewHandler).Methods(http.MethodGet, http.MethodOptions)
+
 	v1mux.Handle("/thumbnail/{serverName}/{mediaId}",
 		httputil.MakeHTTPAPI("thumbnail", userAPI, cfg.Global.Metrics.Enabled, makeDownloadAPI("thumbnail_authed_client", &cfg.MediaAPI, rateLimits, db, client, federationClient, activeRemoteRequests, activeThumbnailGeneration, false), httputil.WithAuth()),
 	).Methods(http.MethodGet, http.MethodOptions)