Implement deletion token toggle & master

README.md

@@ -44,14 +44,16 @@ Pasty will be available at http://localhost:8080.
 ---
 
 ## General environment variables
-| Environment Variable          | Default Value | Type     | Description                                                                                                 |
+| Environment Variable          | Default Value | Type     | Description                                                                                                        |
-|-------------------------------|---------------|----------|-------------------------------------------------------------------------------------------------------------|
+|-------------------------------|---------------|----------|--------------------------------------------------------------------------------------------------------------------|
-| `PASTY_WEB_ADDRESS`           | `:8080`       | `string` | Defines the address the web server listens to                                                               |
+| `PASTY_WEB_ADDRESS`           | `:8080`       | `string` | Defines the address the web server listens to                                                                      |
-| `PASTY_STORAGE_TYPE`          | `file`        | `string` | Defines the storage type the pastes are saved to                                                            |
+| `PASTY_STORAGE_TYPE`          | `file`        | `string` | Defines the storage type the pastes are saved to                                                                   |
-| `PASTY_HASTEBIN_SUPPORT`      | `false`       | `bool`   | Defines whether or not the `POST /documents` endpoint should be enabled, as known from the hastebin servers |
+| `PASTY_HASTEBIN_SUPPORT`      | `false`       | `bool`   | Defines whether or not the `POST /documents` endpoint should be enabled, as known from the hastebin servers        |
-| `PASTY_ID_LENGTH`             | `6`           | `number` | Defines the length of the ID of a paste                                                                     |
+| `PASTY_ID_LENGTH`             | `6`           | `number` | Defines the length of the ID of a paste                                                                            |
-| `PASTY_DELETION_TOKEN_LENGTH` | `12`          | `number` | Defines the length of the deletion token of a paste                                                         |
+| `PASTY_DELETION_TOKENS`       | `true`        | `bool`   | Defines whether or not deletion tokens should be generated                                                         |
-| `PASTY_RATE_LIMIT`            | `30-M`        | `string` | Defines the rate limit of the API (see https://github.com/ulule/limiter#usage)                              |
+| `PASTY_DELETION_TOKEN_MASTER` | `<empty>`     | `string` | Defines the master deletion token which is authorized to delete every paste (even if deletion tokens are disabled) |
+| `PASTY_DELETION_TOKEN_LENGTH` | `12`          | `number` | Defines the length of the deletion token of a paste                                                                |
+| `PASTY_RATE_LIMIT`            | `30-M`        | `string` | Defines the rate limit of the API (see https://github.com/ulule/limiter#usage)                                     |
 
 ## AutoDelete
 Pasty provides an intuitive system to automatically delete pastes after a specific amount of time. You can configure it with the following variables:

go.sum

@@ -33,12 +33,14 @@ cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohl
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/ClickHouse/clickhouse-go v1.3.12/go.mod h1:EaI/sW7Azgz9UATzd5ZdZHRUhHgv5+JMS9NSr2smCJI=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
+github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5 h1:ygIc8M6trr62pF5DucadTWGdEB4mEyvzi0e2nbcmcyA=
 github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5/go.mod h1:tTuCMEN+UleMWgg9dVx4Hu52b1bJo+59jBh3ajtinzw=
 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=
@@ -90,6 +92,7 @@ github.com/cockroachdb/cockroach-go v0.0.0-20190925194419-606b3d062051/go.mod h1
 github.com/cockroachdb/datadriven v0.0.0-20190809214429-80d97fb3cbaa/go.mod h1:zn76sxSg3SzpJ0PPJaLDCu+Bu0Lg3sKTORVIj19EIF8=
 github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd/go.mod h1:sE/e/2PUdi/liOCUjSTXgM1o87ZssimdTWN964YiIeI=
 github.com/containerd/containerd v1.4.0/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
+github.com/containerd/containerd v1.4.1 h1:pASeJT3R3YyVn+94qEPk0SnU1OQ20Jd/T+SPKy9xehY=
 github.com/containerd/containerd v1.4.1/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/coreos/go-systemd v0.0.0-20180511133405-39ca1b05acc7/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
@@ -104,10 +107,15 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/denisenkom/go-mssqldb v0.0.0-20200620013148-b91950f658ec/go.mod h1:xbL0rPBG9cCiLr28tMa8zpbdarY27NDyej4t/EjAShU=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
+github.com/dhui/dktest v0.3.3 h1:DBuH/9GFaWbDRa42qsut/hbQu+srAQ0rPWnUoiGX7CA=
 github.com/dhui/dktest v0.3.3/go.mod h1:EML9sP4sqJELHn4jV7B0TY8oF6077nk83/tz7M56jcQ=
+github.com/docker/distribution v2.7.1+incompatible h1:a5mlkVzth6W5A4fOsS3D2EO5BUmsJpcB+cRlLU7cSug=
 github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
+github.com/docker/docker v17.12.0-ce-rc1.0.20200618181300-9dc6525e6118+incompatible h1:iWPIG7pWIsCwT6ZtHnTUpoVMnete7O/pzd9HFE3+tn8=
 github.com/docker/docker v17.12.0-ce-rc1.0.20200618181300-9dc6525e6118+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
 github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
+github.com/docker/go-units v0.4.0 h1:3uh0PgVws3nIA0Q+MwDC8yjEPf9zjRfZZWXZYDct3Tw=
 github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/eapache/go-resiliency v1.1.0/go.mod h1:kFI+JgMyC7bLPUVY133qvEBtVayf5mFgVsvEsIPBvNs=
@@ -180,6 +188,7 @@ github.com/gogo/googleapis v1.1.0/go.mod h1:gf4bu3Q80BeJ6H1S1vYPm8/ELATdvryBaNFG
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
+github.com/gogo/protobuf v1.3.1 h1:DqDEcV5aeaTmdFBePNpYsp3FlcVH/2ISVVM9Qf8PSls=
 github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/golang-migrate/migrate/v4 v4.14.2-0.20201125065321-a53e6fc42574 h1:YEVMe8861NCZxTMzTI5BCobpwGpt1Md6D8v00jDc68w=
 github.com/golang-migrate/migrate/v4 v4.14.2-0.20201125065321-a53e6fc42574/go.mod h1:l7Ks0Au6fYHuUIxUhQ0rcVX1uLlJg54C/VvW7tvxSz0=
@@ -210,6 +219,7 @@ github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:W
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
 github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/golang/protobuf v1.4.3 h1:JjCZWpVbqXDqFVmTfYWEVTMIYrL/NPdPSCHPJ0T/raM=
 github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/snappy v0.0.0-20170215233205-553a64147049/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
@@ -437,6 +447,7 @@ github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lN
 github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9AWI=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc=
+github.com/morikuni/aec v1.0.0 h1:nP9CBfwrvYnBRgY6qfDQkygYDmYwOilePFkwzv4dU8A=
 github.com/morikuni/aec v1.0.0/go.mod h1:BbKIizmSmc5MMPqRYbxO4ZU0S0+P200+tUnFx7PXmsc=
 github.com/mutecomm/go-sqlcipher/v4 v4.4.0/go.mod h1:PyN04SaWalavxRGH9E8ZftG6Ju7rsPrGmQRjrEaVpiY=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
@@ -461,7 +472,9 @@ github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1Cpa
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
 github.com/onsi/gomega v1.9.0/go.mod h1:Ho0h+IUsWyvy1OpqCwxlQ/21gkhVunqlU8fDGcoTdcA=
 github.com/op/go-logging v0.0.0-20160315200505-970db520ece7/go.mod h1:HzydrMdWErDVzsI23lYNej1Htcns9BCg93Dk0bBINWk=
+github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
 github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
+github.com/opencontainers/image-spec v1.0.1 h1:JMemWkRwHx4Zj+fVxWoMCFm/8sYGGrUVojFA6h/TRcI=
 github.com/opencontainers/image-spec v1.0.1/go.mod h1:BtxoFyWECRxE4U/7sNtV5W15zMzWCbyJoFRP3s7yZA0=
 github.com/opentracing-contrib/go-observer v0.0.0-20170622124052-a52f23424492/go.mod h1:Ngi6UdF0k5OKD5t5wlmGhe/EDKPoUM3BXZSSfIuJbis=
 github.com/opentracing/basictracer-go v1.0.0/go.mod h1:QfBfYuafItcjQuMwinw9GhYKwFXS9KnPs5lxoYwgW74=
@@ -529,6 +542,7 @@ github.com/sirupsen/logrus v1.4.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPx
 github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMBDgk/93Q=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
+github.com/sirupsen/logrus v1.7.0 h1:ShrD1U9pZB12TX0cVy0DtePoCH97K8EtX+mg7ZARUtM=
 github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
@@ -903,6 +917,7 @@ google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20200806141610-86f49bd18e98/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20200815001618-f69a88009b70/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20200911024640-645f7a48b24f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20201030142918-24207fddd1c3 h1:sg8vLDNIxFPHTchfhH1E3AI32BL3f23oie38xUWnJM8=
 google.golang.org/genproto v0.0.0-20201030142918-24207fddd1c3/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
@@ -922,6 +937,7 @@ google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3Iji
 google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.32.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.33.1 h1:DGeFlSan2f+WEtCERJ4J9GJWk15TxUi8QGagfI87Xyc=
 google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
@@ -932,6 +948,7 @@ google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
+google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

internal/config/config.go

@@ -14,6 +14,8 @@ type Config struct {
 	StorageType         shared.StorageType
 	HastebinSupport     bool
 	IDLength            int
+	DeletionTokens      bool
+	DeletionTokenMaster string
 	DeletionTokenLength int
 	RateLimit           string
 	AutoDelete          *AutoDeleteConfig
@@ -70,6 +72,8 @@ func Load() {
 		StorageType:         shared.StorageType(strings.ToLower(env.MustString("STORAGE_TYPE", "file"))),
 		HastebinSupport:     env.MustBool("HASTEBIN_SUPPORT", false),
 		IDLength:            env.MustInt("ID_LENGTH", 6),
+		DeletionTokens:      env.MustBool("DELETION_TOKENS", true),
+		DeletionTokenMaster: env.MustString("DELETION_TOKEN_MASTER", ""),
 		DeletionTokenLength: env.MustInt("DELETION_TOKEN_LENGTH", 12),
 		RateLimit:           env.MustString("RATE_LIMIT", "30-M"),
 		AutoDelete: &AutoDeleteConfig{

internal/web/controllers/v1/hastebin_support.go

@@ -36,19 +36,22 @@ func HastebinSupportHandler(ctx *fasthttp.RequestCtx) {
 
 	// Create the paste object
 	paste := &shared.Paste{
-		ID:            id,
+		ID:         id,
-		Content:       content,
+		Content:    content,
-		DeletionToken: utils.RandomString(config.Current.DeletionTokenLength),
+		Created:    time.Now().Unix(),
-		Created:       time.Now().Unix(),
+		AutoDelete: config.Current.AutoDelete.Enabled,
-		AutoDelete:    config.Current.AutoDelete.Enabled,
 	}
 
-	// Hash the deletion token
+	// Set a deletion token
-	err = paste.HashDeletionToken()
+	if config.Current.DeletionTokens {
-	if err != nil {
+		paste.DeletionToken = utils.RandomString(config.Current.DeletionTokenLength)
-		ctx.SetStatusCode(fasthttp.StatusInternalServerError)
+
-		ctx.SetBodyString(err.Error())
+		err = paste.HashDeletionToken()
-		return
+		if err != nil {
+			ctx.SetStatusCode(fasthttp.StatusInternalServerError)
+			ctx.SetBodyString(err.Error())
+			return
+		}
 	}
 
 	// Save the paste

internal/web/controllers/v1/pastes.go

@@ -77,20 +77,24 @@ func v1PostPaste(ctx *fasthttp.RequestCtx) {
 
 	// Create the paste object
 	paste := &shared.Paste{
-		ID:            id,
+		ID:         id,
-		Content:       values["content"],
+		Content:    values["content"],
-		DeletionToken: utils.RandomString(config.Current.DeletionTokenLength),
+		Created:    time.Now().Unix(),
-		Created:       time.Now().Unix(),
+		AutoDelete: config.Current.AutoDelete.Enabled,
-		AutoDelete:    config.Current.AutoDelete.Enabled,
 	}
 
-	// Hash the deletion token
+	// Set a deletion token
-	pasteCopy := *paste
+	deletionToken := ""
-	err = paste.HashDeletionToken()
+	if config.Current.DeletionTokens {
-	if err != nil {
+		deletionToken = utils.RandomString(config.Current.DeletionTokenLength)
-		ctx.SetStatusCode(fasthttp.StatusInternalServerError)
+		paste.DeletionToken = deletionToken
-		ctx.SetBodyString(err.Error())
+
-		return
+		err = paste.HashDeletionToken()
+		if err != nil {
+			ctx.SetStatusCode(fasthttp.StatusInternalServerError)
+			ctx.SetBodyString(err.Error())
+			return
+		}
 	}
 
 	// Save the paste
@@ -102,6 +106,8 @@ func v1PostPaste(ctx *fasthttp.RequestCtx) {
 	}
 
 	// Respond with the paste
+	pasteCopy := *paste
+	pasteCopy.DeletionToken = deletionToken
 	jsonData, err := json.Marshal(pasteCopy)
 	if err != nil {
 		ctx.SetStatusCode(fasthttp.StatusInternalServerError)
@@ -126,7 +132,8 @@ func v1DeletePaste(ctx *fasthttp.RequestCtx) {
 	}
 
 	// Validate the deletion token of the paste
-	if values["deletionToken"] == "" {
+	deletionToken := values["deletionToken"]
+	if deletionToken == "" {
 		ctx.SetStatusCode(fasthttp.StatusBadRequest)
 		ctx.SetBodyString("missing 'deletionToken' field")
 		return
@@ -146,7 +153,7 @@ func v1DeletePaste(ctx *fasthttp.RequestCtx) {
 	}
 
 	// Check if the deletion token is correct
-	if !paste.CheckDeletionToken(values["deletionToken"]) {
+	if (config.Current.DeletionTokenMaster == "" || deletionToken != config.Current.DeletionTokenMaster) && !paste.CheckDeletionToken(deletionToken) {
 		ctx.SetStatusCode(fasthttp.StatusForbidden)
 		ctx.SetBodyString("invalid deletion token")
 		return

internal/web/web.go

@@ -51,8 +51,9 @@ func Serve() error {
 		v1Route := apiRoute.Group("/v1")
 		{
 			v1Route.GET("/info", func(ctx *fasthttp.RequestCtx) {
-				jsonData, _ := json.Marshal(map[string]string{
+				jsonData, _ := json.Marshal(map[string]interface{}{
-					"version": static.Version,
+					"version":        static.Version,
+					"deletionTokens": config.Current.DeletionTokens,
 				})
 				ctx.SetBody(jsonData)
 			})

web/assets/js/buttons.js

@@ -63,7 +63,9 @@ export function setupButtons() {
             const data = await response.json();
 
             // Give the user the chance to copy the deletion token
-            prompt("The deletion token for your paste is:", data.deletionToken);
+            if (data.deletionToken) {
+                prompt("The deletion token for your paste is:", data.deletionToken);
+            }
 
             // Redirect the user to the paste page
             let address = location.protocol + "//" + location.host + "/" + data.id;