Implement adding a member to a Group

This implements POST request to the graph/v1.0/groups/{groupid}/members/$ref
endpoint. Allowing to add members to a group.

go.mod

@@ -38,6 +38,7 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.7.3
 	github.com/iancoleman/strcase v0.2.0
 	github.com/justinas/alice v1.2.0
+	github.com/libregraph/idm v0.3.1-0.20220120080913-d0003ade935e
 	github.com/libregraph/lico v0.53.1
 	github.com/mennanov/fieldmask-utils v0.5.0
 	github.com/mitchellh/mapstructure v1.4.3
@@ -190,7 +191,7 @@ require (
 	github.com/nats-io/nkeys v0.3.0 // indirect
 	github.com/nats-io/nuid v1.0.1 // indirect
 	github.com/nxadm/tail v1.4.8 // indirect
-	github.com/orcaman/concurrent-map v0.0.0-20210501183033-44dafcb38ecc // indirect
+	github.com/orcaman/concurrent-map v1.0.0 // indirect
 	github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c // indirect
 	github.com/patrickmn/go-cache v2.1.0+incompatible // indirect
 	github.com/pkg/xattr v0.4.4 // indirect

go.sum

@@ -120,6 +120,7 @@ github.com/RoaringBitmap/roaring v0.9.4 h1:ckvZSX5gwCRaJYBNe7syNawCU5oruY9gQmjXl
 github.com/RoaringBitmap/roaring v0.9.4/go.mod h1:icnadbWcNyfEHlYdr+tDlOTih1Bf/h+rzPpv4sbomAA=
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
+github.com/Songmu/prompter v0.5.0/go.mod h1:S4Eg25l60kPlnfB2ttFVpvBKYw7RKJexzB3gzpAansY=
 github.com/acomagu/bufpipe v1.0.3 h1:fxAGrHZTgQ9w5QqVItgzwj235/uYZYgbXitB+dLupOk=
 github.com/acomagu/bufpipe v1.0.3/go.mod h1:mxdxdup/WdsKVreO5GpW4+M/1CE2sMG4jeGJ2sYmHc4=
 github.com/agext/levenshtein v1.2.1/go.mod h1:JEDfjyjHDjOF/1e4FlBE/PkbqA9OfWu2ki2W0IB5558=
@@ -132,7 +133,9 @@ github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRF
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
+github.com/alexedwards/argon2id v0.0.0-20211130144151-3585854a6387/go.mod h1:GuR5j/NW7AU7tDAQUDGCtpiPxWIOy/c3kiRDnlwiCHc=
 github.com/aliyun/alibaba-cloud-sdk-go v1.61.976/go.mod h1:pUKYbK5JQ+1Dfxk80P0qxGqe5dkxDoabbZS7zOcouyA=
+github.com/amoghe/go-crypt v0.0.0-20191109212615-b2ff80594b7f/go.mod h1:eFiR01PwTcpbzXtdMces7zxg6utvFM5puiWHpWB8D/k=
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239 h1:kFOfPq6dUM1hTo4JG6LR5AXSUEsOjtdm0kw0FtQtMJA=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
@@ -352,6 +355,7 @@ github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8
 github.com/dimchansky/utfbom v1.1.0/go.mod h1:rO41eb7gLfo8SF1jd9F8HplJm1Fewwi4mQvIirEdv+8=
 github.com/disintegration/imaging v1.6.2 h1:w1LecBlG2Lnp8B3jk5zSuNqd7b4DXhcjwek1ei82L+c=
 github.com/disintegration/imaging v1.6.2/go.mod h1:44/5580QXChDfwIclfc/PCwrr44amcmDAg8hxG0Ewe4=
+github.com/dlclark/regexp2 v1.4.0/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
 github.com/dnaeon/go-vcr v1.0.1/go.mod h1:aBB1+wY4s93YsC3HHjMBMrwTj2R9FHDzUr9KyGc8n1E=
 github.com/dnsimple/dnsimple-go v0.63.0/go.mod h1:O5TJ0/U6r7AfT8niYNlmohpLbCSG+c71tQlGr9SeGrg=
 github.com/docker/docker v20.10.7+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
@@ -412,6 +416,8 @@ github.com/gliderlabs/ssh v0.2.2/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aev
 github.com/globalsign/mgo v0.0.0-20180905125535-1ca0a4f7cbcb/go.mod h1:xkRDCp4j0OGD1HRkm4kmhM+pmpv3AKq5SU7GMg4oO/Q=
 github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8/go.mod h1:xkRDCp4j0OGD1HRkm4kmhM+pmpv3AKq5SU7GMg4oO/Q=
 github.com/go-acme/lego/v4 v4.4.0/go.mod h1:l3+tFUFZb590dWcqhWZegynUthtaHJbG2fevUpoOOE0=
+github.com/go-asn1-ber/asn1-ber v1.3.1/go.mod h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
+github.com/go-asn1-ber/asn1-ber v1.4.1/go.mod h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
 github.com/go-asn1-ber/asn1-ber v1.5.1/go.mod h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
 github.com/go-asn1-ber/asn1-ber v1.5.3 h1:u7utq56RUFiynqUzgVMFDymapcOtQ/MZkh3H4QYkxag=
 github.com/go-asn1-ber/asn1-ber v1.5.3/go.mod h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
@@ -442,8 +448,10 @@ github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2
 github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
 github.com/go-kit/log v0.2.0 h1:7i2K3eKTos3Vc0enKCfnVcgHh2olr/MyfboYq7cAcFw=
 github.com/go-kit/log v0.2.0/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
+github.com/go-ldap/ldap/v3 v3.1.7/go.mod h1:5Zun81jBTabRaI8lzN7E1JjyEl1g6zI6u9pd8luAK4Q=
 github.com/go-ldap/ldap/v3 v3.4.1 h1:fU/0xli6HY02ocbMuozHAYsaHLcnkLjvho2r5a34BUU=
 github.com/go-ldap/ldap/v3 v3.4.1/go.mod h1:iYS1MdmrmceOJ1QOTnRXrIs7i3kloqtmGQjRvjKpyMg=
+github.com/go-ldap/ldif v0.0.0-20200320164324-fd88d9b715b3/go.mod h1:ZXFhGda43Z2TVbfGZefXyMJzsDHhCh0go3bZUcwTx7o=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=
@@ -888,6 +896,8 @@ github.com/labstack/echo/v4 v4.1.11/go.mod h1:i541M3Fj6f76NZtHSj7TXnyM8n2gaodfvf
 github.com/labstack/gommon v0.3.0/go.mod h1:MULnywXg0yavhxWKc+lOruYdAhDwPK9wf0OL7NoOu+k=
 github.com/leodido/go-urn v1.1.0/go.mod h1:+cyI34gQWZcE1eQU7NVgKkkzdXDQHr1dBMtdAPozLkw=
 github.com/lib/pq v1.10.0/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
+github.com/libregraph/idm v0.3.1-0.20220120080913-d0003ade935e h1:iO7Gf/cMCn2sn28CoWsHUQ/O7VfH0DAJrhHyTE/xQk4=
+github.com/libregraph/idm v0.3.1-0.20220120080913-d0003ade935e/go.mod h1:gdDXfHsvrrmoNwqcXroOGIi2+Lrx5iAipbpVwR7goeY=
 github.com/libregraph/lico v0.53.1 h1:c5JYFg0mrIgk6Ktj77rNJ2K8X01hs28JJ9Vw1N1iMAk=
 github.com/libregraph/lico v0.53.1/go.mod h1:EXf6Y9s9TygW6unSXosBpVXWUURoN2sPX0053o4zVfQ=
 github.com/linode/linodego v0.25.3/go.mod h1:GSBKPpjoQfxEfryoCRcgkuUOCuVtGHWhzI8OMdycNTE=
@@ -1086,8 +1096,9 @@ github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFSt
 github.com/opentracing/opentracing-go v1.2.0/go.mod h1:GxEUsuufX4nBwe+T+Wl9TAgYrxe9dPLANfrWvHYVTgc=
 github.com/openzipkin/zipkin-go v0.1.6/go.mod h1:QgAqvLzwWbR/WpD4A3cGpPtJrZXNIiJc5AZX7/PBEpw=
 github.com/oracle/oci-go-sdk v24.3.0+incompatible/go.mod h1:VQb79nF8Z2cwLkLS35ukwStZIg5F66tcBccjip/j888=
-github.com/orcaman/concurrent-map v0.0.0-20210501183033-44dafcb38ecc h1:Ak86L+yDSOzKFa7WM5bf5itSOo1e3Xh8bm5YCMUXIjQ=
 github.com/orcaman/concurrent-map v0.0.0-20210501183033-44dafcb38ecc/go.mod h1:Lu3tH6HLW3feq74c2GC+jIMS/K2CFcDWnWD9XkenwhI=
+github.com/orcaman/concurrent-map v1.0.0 h1:I/2A2XPCb4IuQWcQhBhSwGfiuybl/J0ev9HDbW65HOY=
+github.com/orcaman/concurrent-map v1.0.0/go.mod h1:Lu3tH6HLW3feq74c2GC+jIMS/K2CFcDWnWD9XkenwhI=
 github.com/ovh/go-ovh v1.1.0/go.mod h1:AxitLZ5HBRPyUd+Zl60Ajaag+rNTdVXWIkzfrVuTXWA=
 github.com/owncloud/libre-graph-api-go v0.9.0 h1:hMgjztJRCe1kRYqZ+w0paMFFzeUUpBX2o1TPNMNTmdU=
 github.com/owncloud/libre-graph-api-go v0.9.0/go.mod h1:579sFrPP7aP24LZXGPopLfvE+hAka/2DYHk0+Ij+w+U=
@@ -1134,6 +1145,7 @@ github.com/prometheus/client_golang v1.1.0/go.mod h1:I1FGZT9+L76gKKOs5djB6ezCbFQ
 github.com/prometheus/client_golang v1.4.0/go.mod h1:e9GMxYsXl05ICDXkRhurwBS4Q3OK1iX/F2sw+iXX5zU=
 github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP4j5+D6mVACh+pe2M=
 github.com/prometheus/client_golang v1.11.0/go.mod h1:Z6t4BnS23TR94PD6BsDNk8yVqroYurpAkEiz0P2BEV0=
+github.com/prometheus/client_golang v1.12.0/go.mod h1:3Z9XVyYiZYEO+YQWt3RD2R3jrbd179Rt297l4aS6nDY=
 github.com/prometheus/client_golang v1.12.1 h1:ZiaPsmm9uiBeaSMRznKsCDNtPCS0T3JVDGF+06gjBzk=
 github.com/prometheus/client_golang v1.12.1/go.mod h1:3Z9XVyYiZYEO+YQWt3RD2R3jrbd179Rt297l4aS6nDY=
 github.com/prometheus/client_model v0.0.0-20170216185247-6f3806018612/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
@@ -1253,6 +1265,7 @@ github.com/soheilhy/cmux v0.1.4/go.mod h1:IM3LyeVVIOuxMH7sFAkER9+bJ4dT7Ms6E4xg4k
 github.com/sony/gobreaker v0.4.1/go.mod h1:ZKptC7FHNvhBz7dN2LGjPVBz2sZJmc0/PkyDJOjmxWY=
 github.com/sony/gobreaker v0.5.0 h1:dRCvqm0P490vZPmy7ppEk2qCnCieBooFJ+YoXGYB+yg=
 github.com/sony/gobreaker v0.5.0/go.mod h1:ZKptC7FHNvhBz7dN2LGjPVBz2sZJmc0/PkyDJOjmxWY=
+github.com/spacewander/go-suffix-tree v0.0.0-20191010040751-0865e368c784/go.mod h1:ff/5myEGgtsAwf26goQCO905GrEm5ugEZSd6OWTsrhM=
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ=
 github.com/spf13/afero v1.3.3/go.mod h1:5KUK8ByomD5Ti5Artl0RtHeI5pTF7MIDuXL3yY520V4=
@@ -1299,6 +1312,7 @@ github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/studio-b12/gowebdav v0.0.0-20211109083228-3f8721cd4b6f/go.mod h1:bHA7t77X/QFExdeAnDzK6vKM34kEZAcE1OX4MfiwjkE=
 github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
 github.com/syndtr/goleveldb v1.0.0/go.mod h1:ZVVdQEZoIme9iO1Ch2Jdy24qqXrMMOU6lpPAyBWyWuQ=
+github.com/test-go/testify v1.1.4/go.mod h1:rH7cfJo/47vWGdi4GPj16x3/t1xGOj2YxzmNQzk2ghU=
 github.com/thanhpk/randstr v1.0.4 h1:IN78qu/bR+My+gHCvMEXhR/i5oriVHcTB/BJJIRTsNo=
 github.com/thanhpk/randstr v1.0.4/go.mod h1:M/H2P1eNLZzlDwAzpkkkUvoyNNMbzRGhESZuEQk3r0U=
 github.com/thejerf/suture/v4 v4.0.1 h1:CLnC1wxLAiHA5zTbbvhSWMupVuGe5ZJ7YddWE3lvb4M=
@@ -1307,6 +1321,7 @@ github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhV
 github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
 github.com/transip/gotransip/v6 v6.2.0/go.mod h1:pQZ36hWWRahCUXkFWlx9Hs711gLd8J4qdgLdRzmtY+g=
+github.com/trustelem/zxcvbn v1.0.1/go.mod h1:zonUyKeh7sw6psPf/e3DtRqkRyZvAbOfjNz/aO7YQ5s=
 github.com/tus/tusd v1.1.0/go.mod h1:3DWPOdeCnjBwKtv98y5dSws3itPqfce5TVa0s59LRiA=
 github.com/tus/tusd v1.8.0 h1:QODQ5uMhL2tFX3Ouk7rUHHqPqeDBvi2+gYIoyUO0n8Q=
 github.com/tus/tusd v1.8.0/go.mod h1:stZzKpol4qz7lX2HXy/1H526dn5mRnkIICTW2lrh9NM=
@@ -1475,6 +1490,8 @@ golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e/go.mod h1:GvvjBRRGRdwPK5y
 golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20210817164053-32db794688a5/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20211108221036-ceb1ce70b4fa/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.0.0-20211215165025-cf75a172585e h1:1SzTfNOXwIS2oWiMF+6qu0OUDKb0dauo6MoDUQyu+yU=
 golang.org/x/crypto v0.0.0-20211215165025-cf75a172585e/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
 golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -1591,6 +1608,7 @@ golang.org/x/net v0.0.0-20210813160813-60bc85c4be6d/go.mod h1:9nx3DQGgdP8bBQD5qx
 golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211020060615-d418f374d309/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211111083644-e5c967477495/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211216030914-fe4d6282115f h1:hEYJvxw1lSnWIl8X9ofsYMklzaDs90JI2az5YMd4fPM=
 golang.org/x/net v0.0.0-20211216030914-fe4d6282115f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -1711,6 +1729,7 @@ golang.org/x/sys v0.0.0-20210220050731-9a76102bfb43/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210303074136-134d130e1a04/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210305230114-8fe3ee5dd75b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210315160823-c6e025ad8005/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210319071255-635bc2c9138d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210320140829-1e4c9ba3b0c4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210324051608-47abb6519492/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -1744,8 +1763,10 @@ golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/term v0.0.0-20201113234701-d7a72108b828/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.0.0-20210916214954-140adaaadfaf h1:Ihq/mm/suC88gF8WFcVwk+OV6Tq+wyA1O0E5UEvDglI=
+golang.org/x/term v0.0.0-20210317153231-de623e64d2a6/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210916214954-140adaaadfaf/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 h1:JGgROgKl9N8DuW20oFS5gxc+lE67/N3FcwmBPMe7ArY=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

graph/pkg/identity/backend.go

@@ -26,6 +26,8 @@ type Backend interface {
 	GetGroup(ctx context.Context, nameOrID string) (*libregraph.Group, error)
 	GetGroups(ctx context.Context, queryParam url.Values) ([]*libregraph.Group, error)
 	GetGroupMembers(ctx context.Context, id string) ([]*libregraph.User, error)
+	// AddMemberToGroup adds a new member (reference by ID) to supplied group in the identity backend.
+	AddMemberToGroup(ctx context.Context, groupID string, memberID string) error
 }
 
 func CreateUserModelFromCS3(u *cs3.User) *libregraph.User {

graph/pkg/identity/cs3.go

@@ -179,6 +179,11 @@ func (i *CS3) GetGroupMembers(ctx context.Context, groupID string) ([]*libregrap
 	return nil, errorcode.New(errorcode.NotSupported, "not implemented")
 }
 
+// AddMemberToGroup implements the Backend Interface. It's currently not supported for the CS3 backend
+func (i *CS3) AddMemberToGroup(ctx context.Context, groupID string, memberID string) error {
+	return errorcode.New(errorcode.NotSupported, "not implemented")
+}
+
 func createGroupModelFromCS3(g *cs3group.Group) *libregraph.Group {
 	if g.Id == nil {
 		g.Id = &cs3group.GroupId{}

graph/pkg/identity/ldap.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/go-ldap/ldap/v3"
 	"github.com/gofrs/uuid"
+	ldapdn "github.com/libregraph/idm/pkg/ldapdn"
 	libregraph "github.com/owncloud/libre-graph-api-go"
 
 	"github.com/owncloud/ocis/graph/pkg/config"
@@ -551,6 +552,53 @@ func (i *LDAP) CreateGroup(ctx context.Context, group libregraph.Group) (*libreg
 	return i.createGroupModelFromLDAP(e), nil
 }
 
+// AddMemberToGroup implements the Backend Interface for the LDAP backend.
+// Currently it is limited to adding Users as Group members. Adding other groups
+// as members is not yet implemented
+func (i *LDAP) AddMemberToGroup(ctx context.Context, groupID string, memberID string) error {
+	ge, err := i.getLDAPGroupByID(groupID, true)
+	if err != nil {
+		return err
+	}
+	me, err := i.getLDAPUserByID(memberID)
+	if err != nil {
+		return err
+	}
+	i.logger.Debug().Str("backend", "ldap").Str("groupdn", ge.DN).Str("member", me.DN).Msg("Add Member")
+
+	mr := ldap.ModifyRequest{DN: ge.DN}
+	// Handle empty groups (using the empty member attribute)
+	current := ge.GetEqualFoldAttributeValues(i.groupAttributeMap.member)
+	if len(current) == 1 && current[0] == "" {
+		mr.Delete(i.groupAttributeMap.member, []string{""})
+	}
+	nUserDN, err := ldapdn.ParseNormalize(me.DN)
+	for _, member := range current {
+		if member == "" {
+			continue
+		}
+		if nMember, err := ldapdn.ParseNormalize(member); err != nil {
+			// We couldn't parse the member value as a DN. Let's keep it
+			// as it is but log a warning
+			i.logger.Warn().Str("memberDN", member).Err(err).Msg("Couldn't parse DN")
+			continue
+		} else {
+			if nMember == nUserDN {
+				i.logger.Info().Str("memberDN", member).Msg("User already present. Nothing to do")
+				return nil
+			}
+		}
+
+	}
+
+	mr.Add(i.groupAttributeMap.member, []string{me.DN})
+
+	if err := i.conn.Modify(&mr); err != nil {
+		return err
+	}
+	return nil
+}
+
 func (i *LDAP) createUserModelFromLDAP(e *ldap.Entry) *libregraph.User {
 	if e == nil {
 		return nil
@@ -569,6 +617,7 @@ func (i *LDAP) createGroupModelFromLDAP(e *ldap.Entry) *libregraph.Group {
 		Id:          pointerOrNil(e.GetEqualFoldAttributeValue(i.groupAttributeMap.id)),
 	}
 }
+
 func pointerOrNil(val string) *string {
 	if val == "" {
 		return nil

graph/pkg/service/v0/groups.go

@@ -5,13 +5,13 @@ import (
 	"errors"
 	"net/http"
 	"net/url"
+	"strings"
 
 	libregraph "github.com/owncloud/libre-graph-api-go"
 	"github.com/owncloud/ocis/graph/pkg/service/v0/errorcode"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/render"
-	//msgraph "github.com/owncloud/open-graph-api-go" // FIXME add groups to open graph, needs OnPremisesSamAccountName and OnPremisesDomainName
 )
 
 // GetGroups implements the Service interface.
@@ -115,3 +115,64 @@ func (g Graph) GetGroupMembers(w http.ResponseWriter, r *http.Request) {
 	render.Status(r, http.StatusOK)
 	render.JSON(w, r, members)
 }
+
+// PostGroupMember implements the Service interface.
+func (g Graph) PostGroupMember(w http.ResponseWriter, r *http.Request) {
+	g.logger.Info().Msg("Calling PostGroupMember")
+
+	groupID := chi.URLParam(r, "groupID")
+	groupID, err := url.PathUnescape(groupID)
+	if err != nil {
+		errorcode.InvalidRequest.Render(w, r, http.StatusBadRequest, "unescaping group id failed")
+		return
+	}
+
+	if groupID == "" {
+		errorcode.InvalidRequest.Render(w, r, http.StatusBadRequest, "missing group id")
+		return
+	}
+	memberRef := libregraph.NewMemberReference()
+	err = json.NewDecoder(r.Body).Decode(memberRef)
+	if err != nil {
+		errorcode.InvalidRequest.Render(w, r, http.StatusBadRequest, err.Error())
+		return
+	}
+	memberRefURL, ok := memberRef.GetOdataIdOk()
+	if !ok {
+		errorcode.InvalidRequest.Render(w, r, http.StatusInternalServerError, "@odata.id refernce is missing")
+		return
+	}
+	memberURL, err := url.ParseRequestURI(*memberRefURL)
+	if err != nil {
+		errorcode.InvalidRequest.Render(w, r, http.StatusInternalServerError, "Error parsing @odata.id url")
+		return
+	}
+	segments := strings.Split(memberURL.Path, "/")
+	if len(segments) < 2 {
+		errorcode.InvalidRequest.Render(w, r, http.StatusInternalServerError, "Error parsing @odata.id url path")
+		return
+	}
+	id := segments[len(segments)-1]
+	memberType := segments[len(segments)-2]
+	// The MS Graph spec allows "directoryObject", "user", "group" and "organizational Contact"
+	// we restrict this to users for now. Might add Groups as members later
+	if memberType != "users" {
+		errorcode.InvalidRequest.Render(w, r, http.StatusInternalServerError, "Only user are allowed as group members")
+		return
+	}
+
+	g.logger.Debug().Str("memberType", memberType).Str("id", id).Msg("Add Member")
+	err = g.identityBackend.AddMemberToGroup(r.Context(), groupID, id)
+
+	if err != nil {
+		var errcode errorcode.Error
+		if errors.As(err, &errcode) {
+			errcode.Render(w, r)
+		} else {
+			errorcode.GeneralException.Render(w, r, http.StatusInternalServerError, err.Error())
+		}
+		return
+	}
+	render.Status(r, http.StatusNoContent)
+	render.NoContent(w, r)
+}

graph/pkg/service/v0/instrument.go

@@ -74,6 +74,11 @@ func (i instrument) GetGroupMembers(w http.ResponseWriter, r *http.Request) {
 	i.next.GetGroupMembers(w, r)
 }
 
+// PostGroupMember implements the Service interface.
+func (i instrument) PostGroupMember(w http.ResponseWriter, r *http.Request) {
+	i.next.PostGroupMember(w, r)
+}
+
 // GetDrives implements the Service interface.
 func (i instrument) GetDrives(w http.ResponseWriter, r *http.Request) {
 	i.next.GetDrives(w, r)

graph/pkg/service/v0/logging.go

@@ -74,6 +74,11 @@ func (l logging) GetGroupMembers(w http.ResponseWriter, r *http.Request) {
 	l.next.GetGroupMembers(w, r)
 }
 
+// PostGroupMember implements the Service interface.
+func (l logging) PostGroupMember(w http.ResponseWriter, r *http.Request) {
+	l.next.PostGroupMember(w, r)
+}
+
 // GetDrives implements the Service interface.
 func (l logging) GetDrives(w http.ResponseWriter, r *http.Request) {
 	l.next.GetDrives(w, r)

graph/pkg/service/v0/service.go

@@ -35,6 +35,7 @@ type Service interface {
 	GetGroup(http.ResponseWriter, *http.Request)
 	PostGroup(http.ResponseWriter, *http.Request)
 	GetGroupMembers(http.ResponseWriter, *http.Request)
+	PostGroupMember(http.ResponseWriter, *http.Request)
 
 	GetDrives(w http.ResponseWriter, r *http.Request)
 }
@@ -117,7 +118,10 @@ func NewService(opts ...Option) Service {
 				r.Post("/", svc.PostGroup)
 				r.Route("/{groupID}", func(r chi.Router) {
 					r.Get("/", svc.GetGroup)
-					r.Get("/members", svc.GetGroupMembers)
+					r.Route("/members", func(r chi.Router) {
+						r.Get("/", svc.GetGroupMembers)
+						r.Post("/$ref", svc.PostGroupMember)
+					})
 				})
 			})
 			r.Group(func(r chi.Router) {

graph/pkg/service/v0/tracing.go

@@ -70,6 +70,11 @@ func (t tracing) GetGroupMembers(w http.ResponseWriter, r *http.Request) {
 	t.next.GetGroupMembers(w, r)
 }
 
+// PostGroupMember implements the Service interface.
+func (t tracing) PostGroupMember(w http.ResponseWriter, r *http.Request) {
+	t.next.PostGroupMember(w, r)
+}
+
 // GetDrives implements the Service interface.
 func (t tracing) GetDrives(w http.ResponseWriter, r *http.Request) {
 	t.next.GetDrives(w, r)