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33 changed files with 546 additions and 3031 deletions

10
.gitignore vendored
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@ -14,12 +14,8 @@
# Dependency directories (remove the comment below to include it)
# vendor/
# Generated code from assets using bindata
bindata.go
# Output binary
/rushlink
# Any kind of backup files
*~
*.bak
# Visual Code local config directory
.vscode

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@ -2,57 +2,12 @@
A URL shortener and (maybe) a pastebin server for our #ru community.
## Building
## Build instructions
- `go get -u github.com/go-bindata/go-bindata/...`
- `go generate ./...`
- `go build ./cmd/rushlink`
## Deploying
We recommend running `rushlink` behind a reverse proxy suitable for processing
HTTP requests, such as `nginx`, or `haproxy`.
## Sample `nginx` config
```
server {
location / {
root /var/www/rushlink;
proxy_pass http://127.0.0.1:8000;
proxy_set_header Host rushlink.local;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_http_version 1.1;
}
}
```
`rushlink` automatically detects whether `http` or `https` is used when
`X-Forwarded-Proto` is correctly set. Otherwise, pass `-root_url
https://rushlink.local` to the binary (e.g. in the `systemd` unit file).
## Sample `systemd` unit file
As of 1fe9553cc9, `rushlink` expects its database and file store configuration
in environment variables.
```
[Install]
WantedBy=nginx.service
[Service]
Type=simple
User=rushlink
Group=nogroup
Environment=RUSHLINK_DATABASE_DRIVER=sqlite RUSHLINK_DATABASE_PATH=/var/lib/rushlink/rushlink.sqlite3 RUSHLINK_FILE_STORE_PATH=/var/lib/rushlink/filestore/
ExecStart=/var/lib/rushlink/rushlink -root_url https://rushlink.local
```
---
# Background
## Libraries
Use standard-Go-libraries if the job can be done with those. As of now, these
@ -69,16 +24,10 @@ are the exceptions:
## Database
Before 1fe9553cc9 we used [`go.etcd.io/bbolt`]. This file should be the *only* file
We will be using [`go.etcd.io/bbolt`]. This file should be the *only* file
apart from our monolithic binary. All settings and keys should go in here.
Any read-only data resides in the binary file (possibly compressed).
Now, we use Gorm and support SQLite and PostgreSQL as backends.
We provide a migration binary in `cmd/rushlink-migrate-db/`. In environment
variables, the destination database is configured, and the binary itself
expects a few flags. Refer to the source for the exact flags.
[`go.etcd.io/bbolt`]: `go.etcd.io/bbolt`
## Namespacing
@ -156,3 +105,17 @@ header that the client sends. We can still wrap the plain-text page in a single
We will try as hard as possible to not store any data about our users, and will
only provide any data when we have the legal obligation to do so.
## Sample `nginx` config
```
server {
location / {
root /var/www/rushlink;
proxy_pass http://127.0.0.1:8000;
proxy_set_header Host rushlink.local;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_http_version 1.1;
}
}
```

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@ -1,34 +0,0 @@
body {
font-family: monospace;
}
#dropZone {
background-color: rgba(0, 0, 0.2, 0.75);
color: white;
font-size: 60px;
font-weight: bold;
height: 100%;
left: 0;
padding: 1em;
position: fixed;
top: 0;
transition: visibility 175ms, opacity 175ms;
width: 100%;
z-index: 999;
}
pre {
padding-left: 4ex; /* approx 4 monospaced spaces */
}
.success {
color: #008000;
}
.fail {
color: #800000;
}
.hidden {
display: none;
}

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@ -1,51 +0,0 @@
"use strict";
const COPY_TO_CLIPBOARD_CONTAINER_ID = "copyToClipboardContainer";
const COPY_TO_CLIPBOARD_STATUS_ID = "copyToClipboardStatus";
let copyToClipboardCtr = 0;
function copyToClipboardSuccess() {
let statusElem = document.getElementById(COPY_TO_CLIPBOARD_STATUS_ID);
statusElem.innerText = "URL copied!";
statusElem.classList.remove("fail");
statusElem.classList.add("success");
}
function copyToClipboardFail(cause) {
let statusElem = document.getElementById(COPY_TO_CLIPBOARD_STATUS_ID);
if (!cause) cause = "unknown error";
let msg = "copy failed: " + cause;
console.log(msg);
statusElem.innerText = msg;
statusElem.classList.remove("success");
statusElem.classList.add("fail");
}
function copyToClipboard(url) {
let copyEventIdx = ++copyToClipboardCtr;
if (!window.navigator.clipboard) {
copyToClipboardFail("could not access clipboard");
return;
}
window.navigator.clipboard.writeText(url).then(() => {
if (copyToClipboardCtr !== copyEventIdx) return;
copyToClipboardSuccess();
}, () => {
if (copyToClipboardCtr !== copyEventIdx) return;
copyToClipboardFail();
});
}
(function () {
if (!window.navigator.clipboard) {
let msg = "cannot access clipboard";
if (window.location.protocol !== "https:") {
msg += ": website not using https"
}
console.error(msg);
} else {
let container = document.getElementById(COPY_TO_CLIPBOARD_CONTAINER_ID);
container.classList.remove("hidden");
}
})();

48
assets/js/dragdrop.js vendored
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@ -1,48 +0,0 @@
"use strict";
window.addEventListener('DOMContentLoaded', (event) => {
// The implementation of this drag-drop logic is largely based on the
// answer described in <https://stackoverflow.com/a/28226022/5207081>.
//
// The gist is this: every time the drag enters a new DOM object, it will
// fire a new 'dragenter' event on that element. That is a pain, because
// we do not know which element will be the last to receive a dragleave
// event, in case the user aborts the process.
//
// Therefore, we use an Ugly Hack™. There will be an element with id
// 'dropZone', which blocks the complete page. When a 'dragenter' event
// is received on any DOM element, we will unhide this modal page-blocker.
// This will guarantee us that the next 'enter' event will be received on
// this page-block element. This event we shall ignore.
//
// Then, whenever the user stop their drag action, we will receive the
// 'dragleave' on the '#dropZone' element. Now we know when exactly
// a drag action is cancelled (and we will hide the modal element
// accordingly).
let dropZone = document.getElementById("dropZone");
window.addEventListener("dragenter", (event) => {
// User starts a drag action
dropZone.style.visibility = "";
dropZone.style.opacity = 1;
});
dropZone.addEventListener("drop", (event) => {
// User drops a file
event.preventDefault();
document.getElementById("fileUploadField").files = event.dataTransfer.files;
document.getElementById("fileUploadForm").submit();
});
dropZone.addEventListener("dragleave", (event) => {
// User cancels drag action
dropZone.style.visibility = "hidden";
dropZone.style.opacity = 0;
});
window.addEventListener("dragover", (event) => {
// Prevent the browser from opening the file, because of a drop event
// on the window. (<https://stackoverflow.com/a/6756680/5207081>)
event.preventDefault();
});
});

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@ -2,9 +2,7 @@
<html>
<head>
<meta charset="utf-8">
<title>{{block "title" .}}rushlink{{end}}</title>
<link rel="stylesheet" type="text/css" href="/css/main.css" />
{{block "head-append" .}}{{end -}}
<title>{{block "title" .}}rushlink{{end}}</title>{{block "head-append" .}}{{end}}
</head>
<body>
{{block "body" .}}

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@ -0,0 +1,3 @@
{{define "title"}}
Success - rushlink
{{end}}

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@ -1,47 +1,20 @@
{{define "head-append"}}
<script type="text/javascript" src="/js/dragdrop.js" defer></script>
{{end}}
{{define "body"}}
<div style="visibility:hidden; opacity:0" id="dropZone">File incoming! :D</div>
<h1>#RU paste-dump</h1>
<pre>
#RU URL SHORTENER
=================
Based on https://0x0.st/, this site allows you to easily upload files and shorten URLs using
Based on https://0x0.st/, this site allows you to easily shorten URLs using
the command line.
<h2>Web-API</h2>
<section>
<form id="fileUploadForm" action="/" method="post" enctype="multipart/form-data">
<label class="formLabel" for="fileUploadField">Upload a file:</label>
<input id="fileUploadField" class="formMain" name="file" type="file" />
<input id="fileUploadField" class="formSubmit" type="submit" value="upload!" />
</form>
</section>
<section>
<form id="shortenURLForm" action="/" method="post" enctype="multipart/form-data">
<label class="formLabel" for="shortenURLField">Upload a URL:</label>
<input id="shortenURLField" class="formMain" name="shorten" type="url" />
<input id="shortenURLSubmit" class="formSubmit" type="submit" value="shorten!" />
</form>
</section>
## USAGE
<h2>Command line API</h2>
<pre>
# Upload a file
curl -F'file=@yourfile.png' <a href="{{.RootURL}}">{{.RootURL}}</a>
curl -F'file=@yourfile.png' <a href="//{{.Request.Host}}">https://{{.Request.Host}}</a>
# Shorten a URL
curl -F'shorten=http://example.com/some/long/url' <a href="{{.RootURL}}">{{.RootURL}}</a>
curl -F'shorten=http://example.com/some/long/url' <a href="//{{.Request.Host}}">https://{{.Request.Host}}</a>
# The first line of the result will contain the shortened URL.
#
# In the other lines, you will find other information, including
# information on how to delete the shortened object.
# Upload output from another process
figlet Rushlink | curl -F'file=@-' <a href="{{.RootURL}}">{{.RootURL}}</a>
# To upload a file and only extract the shortened URL (i.e. throw away the rest)
curl -F'file=@yourfile.png' <a href="{{.RootURL}}">{{.RootURL}}</a> | head -n 1
# Shorten a URL with a token to delete it later
curl -F'shorten=http://example.com/some/long/url' -F'deleteToken=' <a href="//{{.Request.Host}}">https://{{.Request.Host}}</a>
</pre>
{{end}}

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@ -0,0 +1,3 @@
{{define "title"}}
Success - rushlink
{{end}}

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@ -0,0 +1,3 @@
{{define "title"}}
Success - rushlink
{{end}}

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@ -1,45 +1,3 @@
{{define "title"}}
'{{.Paste.Key}}{{.FileExt}}' metadata - rushlink
{{end}}
{{define "head-append"}}
<script type="text/javascript" src="/js/copyclipboard.js" defer></script>
{{end}}
{{define "body"}}
<pre id="copyToClipboardContainer" class="hidden">
<button onclick="copyToClipboard('{{.RootURL}}/{{.Paste.Key}}{{.FileExt}}')">Copy URL to clipboard</button> <span id="copyToClipboardStatus"></span>
</pre>
<pre>
<a href="{{.RootURL}}/{{.Paste.Key}}{{.FileExt}}">{{.RootURL}}/{{.Paste.Key}}{{.FileExt}}</a>
---
{{if and (ne .Paste.State.String "deleted") .CanDeleteBool}}
with delete token: <a href="{{.RootURL}}/{{.Paste.Key}}{{.FileExt}}?deleteToken={{.Paste.DeleteToken}}">{{.RootURL}}/{{.Paste.Key}}{{.FileExt}}?deleteToken={{.Paste.DeleteToken}}</a>
{{else -}}
with delete token: &lt;unknown&gt;
{{end -}}
type: {{.Paste.Type}}
state: {{.Paste.State}}
{{if .Paste.CreatedAt.IsZero -}}
created: unknown
{{else -}}
created: {{.Paste.CreatedAt}}
{{end -}}
{{if .Paste.UpdatedAt.IsZero -}}
last updated: unknown
{{else -}}
last updated: {{.Paste.UpdatedAt}}
{{end -}}
{{if .Paste.DeletedAt.Valid -}}
deleted at: {{.Paste.DeletedAt.Time}}
{{end -}}
delete token: {{.CanDeleteString}}
<form action="delete?deleteToken={{.Paste.DeleteToken}}" method="post">
<input type="submit" name="delete" value="Delete paste"
{{- if or (eq .Paste.State.String "deleted") (not .CanDeleteBool) -}}
disabled
{{- end -}}
>
</form>
</pre>
'{{.Paste.Key}}' meta info - rushlink
{{end}}

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@ -0,0 +1 @@
<{{.Request.Host}}/{{.Paste.Key}}> was succesfully deleted

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@ -7,18 +7,10 @@ the command line.
## USAGE
# Upload a file
curl -F'file=@yourfile.png' {{.RootURL}}
curl -F'file=@yourfile.png' https://{{.Request.Host}}
# Shorten a URL
curl -F'shorten=http://example.com/some/long/url' {{.RootURL}}
curl -F'shorten=http://example.com/some/long/url' https://{{.Request.Host}}
# The first line of the result will contain the shortened URL.
#
# In the other lines, you will find other information, including
# information on how to delete the shortened object.
# Upload output from another process
figlet Rushlink | curl -F'file=@-' {{.RootURL}}
# To upload a file and only extract the shortened URL (i.e. throw away the rest)
curl -F'file=@yourfile.png' {{.RootURL}} | head -n 1
# Shorten a URL with a token to delete it later
curl -F'shorten=http://example.com/some/long/url' -F'deleteToken=' https://{{.Request.Host}}

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@ -0,0 +1,5 @@
{{if .Request.PostForm.deleteToken -}}
https://{{.Request.Host}}/{{.Paste.Key}}?deleteToken={{.Paste.DeleteToken | urlquery}}
{{else -}}
https://{{.Request.Host}}/{{.Paste.Key}}
{{end -}}

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@ -0,0 +1,5 @@
{{if .Request.PostForm.deleteToken -}}
https://{{.Request.Host}}/{{.Paste.Key}}?deleteToken={{.Paste.DeleteToken | urlquery}}
{{else -}}
https://{{.Request.Host}}/{{.Paste.Key}}
{{end -}}

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@ -1,21 +1,17 @@
{{.RootURL}}/{{.Paste.Key}}{{.FileExt}}
---
{{if and (ne .Paste.State.String "deleted") .CanDeleteBool}}
with delete token: {{.RootURL}}/{{.Paste.Key}}{{.FileExt}}?deleteToken={{.Paste.DeleteToken}}
{{else -}}
with delete token: <unknown>
{{end -}}type: {{.Paste.Type}}
state: {{.Paste.State}}
{{if .Paste.CreatedAt.IsZero -}}
created: unknown
{{else -}}
created: {{.Paste.CreatedAt}}
{{end -}}
delete token: {{.CanDeleteString}}
METADATA on <{{.Request.Host}}/{{.Paste.Key}}>:
{{if and (ne .Paste.State.String "deleted") .CanDeleteBool}}
TYPE: {{.Paste.Type}}
STATE: {{.Paste.State}}
{{if .Paste.TimeCreated.IsZero -}}
CREATED: undefined
{{else -}}
CREATED: {{.Paste.TimeCreated}}
{{end -}}
DELETE TOKEN: {{.CanDelete.String}}
{{if and (ne .Paste.State.String "deleted") .CanDelete.Bool}}
```
# To delete this {{.Paste.Type}}, execute:
curl --request "DELETE" "{{.RootURL}}/{{.Paste.Key}}{{.FileExt}}?deleteToken={{.Paste.DeleteToken}}"
curl --request "DELETE" "{{.Request.Host}}/{{.Paste.Key}}?deleteToken={{.Request.URL.Query.Get "deleteToken"}}"
```
{{end}}

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@ -1,484 +0,0 @@
// Code generated for package rushlink by go-bindata DO NOT EDIT. (@generated)
// sources:
// assets/css/main.css
// assets/js/copyclipboard.js
// assets/js/dragdrop.js
// assets/templates/html/base.html.tmpl
// assets/templates/html/error.html.tmpl
// assets/templates/html/index.html.tmpl
// assets/templates/html/pasteMeta.html.tmpl
// assets/templates/txt/base.txt.tmpl
// assets/templates/txt/error.txt.tmpl
// assets/templates/txt/index.txt.tmpl
// assets/templates/txt/pasteMeta.txt.tmpl
package rushlink
import (
"bytes"
"compress/gzip"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"strings"
"time"
)
func bindataRead(data []byte, name string) ([]byte, error) {
gz, err := gzip.NewReader(bytes.NewBuffer(data))
if err != nil {
return nil, fmt.Errorf("Read %q: %v", name, err)
}
var buf bytes.Buffer
_, err = io.Copy(&buf, gz)
clErr := gz.Close()
if err != nil {
return nil, fmt.Errorf("Read %q: %v", name, err)
}
if clErr != nil {
return nil, err
}
return buf.Bytes(), nil
}
type asset struct {
bytes []byte
info os.FileInfo
}
type bindataFileInfo struct {
name string
size int64
mode os.FileMode
modTime time.Time
}
// Name return file name
func (fi bindataFileInfo) Name() string {
return fi.name
}
// Size return file size
func (fi bindataFileInfo) Size() int64 {
return fi.size
}
// Mode return file mode
func (fi bindataFileInfo) Mode() os.FileMode {
return fi.mode
}
// Mode return file modify time
func (fi bindataFileInfo) ModTime() time.Time {
return fi.modTime
}
// IsDir return file whether a directory
func (fi bindataFileInfo) IsDir() bool {
return fi.mode&os.ModeDir != 0
}
// Sys return file is sys mode
func (fi bindataFileInfo) Sys() interface{} {
return nil
}
var _cssMainCss = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\x5c\x51\xd1\x6e\xc3\x20\x0c\x7c\xcf\x57\x58\xaa\x26\x6d\x55\xd3\xd2\xa9\x5d\x57\xf2\x27\x7b\x23\xc1\x49\xac\x11\x8c\x80\xae\x49\xa7\xfe\xfb\x94\x84\xac\xd3\x10\x02\x7c\x77\x36\x27\xbb\x64\x3d\xc0\x77\x06\x00\x50\xb3\x8d\x79\xad\x3a\x32\x83\x84\x8e\x2d\x07\xa7\x2a\x2c\xb2\x7b\x96\xad\xb4\x67\xf7\xc1\x16\x93\xb4\x54\xd5\x67\xe3\xf9\x62\x75\x5e\xb1\x61\x2f\xc1\x37\xa5\x7a\x16\x1b\x18\xf7\xf6\x75\x3c\x4e\xc7\x97\x62\x12\x27\xc5\xb5\xa5\x88\xc5\xe3\xa7\x40\x37\x94\xf0\x26\x5c\xff\x07\xbc\x22\x35\x6d\x94\x50\xb2\xd1\x33\xdc\x26\x64\x2f\xc4\x53\x01\xcb\x9a\x28\x83\x75\x94\x20\x8a\x39\x72\x4a\x6b\xb2\x8d\x84\x3d\x76\x73\xaa\xe3\x40\x91\xd8\x4a\xa8\xa9\xc7\x54\x2f\xb2\x1b\x73\xe6\xb7\x57\x76\x91\x7c\x51\xa0\x92\x0c\xc5\x01\xf6\xa7\x63\x17\x36\xc0\x4e\x55\xbf\xe1\x9c\x70\x25\x1d\xdb\xe4\x65\x02\x6e\x39\x59\x8d\xbd\x84\xf3\xf9\xfc\x70\x97\x3c\xde\xb3\xcc\xf9\xa5\x65\xc9\x5e\x3e\x9b\x3e\x60\x5f\xc0\x6e\x0d\xca\x39\xcf\x3d\x1c\x1e\xfd\xd6\x30\x5d\x01\xd6\xbb\xb1\xc0\x36\x5c\xaa\x0a\x43\x48\x55\x52\x2f\x57\x42\xbc\x0b\x21\xa6\xd9\x6c\x6b\x45\xe6\x1f\x3d\x92\x0b\xdd\x92\xd6\x68\x93\x40\x53\x70\x46\x0d\x12\x2c\xdb\x69\xb4\x3f\x01\x00\x00\xff\xff\x22\xc0\x9d\x3a\x00\x02\x00\x00")
func cssMainCssBytes() ([]byte, error) {
return bindataRead(
_cssMainCss,
"css/main.css",
)
}
func cssMainCss() (*asset, error) {
bytes, err := cssMainCssBytes()
if err != nil {
return nil, err
}
info := bindataFileInfo{name: "css/main.css", size: 512, mode: os.FileMode(420), modTime: time.Unix(1590859748, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}
var _jsCopyclipboardJs = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\xb4\x54\x4f\x6b\xe3\x3e\x10\xbd\xfb\x53\x4c\x75\xb2\xc9\x0f\xf3\x3b\xd7\x78\xa1\x4d\xbb\x10\x28\x4d\x69\xdc\xc3\x9e\x82\x2a\x4d\x1c\xb1\xb2\x14\xa4\x71\xd2\xb2\xf8\xbb\x2f\xb2\xe3\xc4\xf9\xcb\xf6\x50\x1f\x12\x12\x8f\xde\xcc\x7b\x6f\x9e\x58\xed\x11\x3c\x39\x25\x88\x65\x51\x24\xac\xf1\x04\xe3\xe9\xcb\xaf\x79\x31\x9d\x8f\x9f\x26\x2f\xf7\xd3\xbb\xd7\x87\xf9\x78\xfa\x5c\xdc\x4d\x9e\x1f\x5f\xe7\x93\x07\xc8\x81\x09\xbb\xfa\x2c\xec\x58\xab\xd5\xbb\xe5\x4e\x8e\xad\x21\xae\x0c\x3a\x96\x5d\x84\x98\x15\x77\xc5\xdb\xec\xfc\xf9\x19\x71\xaa\x3d\xcb\x22\x8d\x04\xc7\xd8\xe4\x20\x87\xff\xb3\x28\x5a\xd4\x46\x90\xb2\xe6\xb8\x62\x56\x0b\x81\xde\xc7\x09\xfc\x89\x00\x00\x02\x88\x6f\x11\x1f\x35\x56\x90\x83\xb4\xa2\xae\xd0\x50\x5a\x22\x85\xbf\xd0\xd0\xfd\xe7\x44\xc6\x57\x86\x4c\xb2\x16\x6a\x0f\x93\x2a\x63\xd0\x15\xf8\x41\x61\xfe\xb7\xd7\xa7\x30\x85\x42\x79\xc3\x4e\x2a\x85\xe6\xde\x3f\x29\x4f\xa9\xc3\xca\xae\x31\x66\x0b\xae\x34\x3b\x85\xdc\x17\x72\x29\x63\xe6\x3b\x1e\xa1\xb0\xb9\xcc\xf6\x27\x57\x3a\x16\xbc\xf6\xf8\x0d\x7c\xd5\x02\xe2\x9b\x2d\x78\xfb\x15\xc8\xd6\xe6\xb7\xb1\x1b\x03\xe8\x9c\x75\x5b\xba\xa1\x67\xe5\xcb\xde\x4b\x08\x0c\x51\xde\x02\x83\x51\x77\xb0\x2b\x0b\xcb\x60\x35\xa6\xda\x96\x71\xe5\xcb\xeb\xaa\x56\xbe\xfc\x07\x2d\x07\x2a\x5d\x97\xb3\x17\xfd\x8a\x96\x71\xed\xf4\x50\xc5\xf0\xfa\x71\x8d\x86\x26\xf2\x03\x72\x18\x8d\x4e\x77\x31\x8b\xf6\x42\x6d\x94\x91\x76\x93\x1a\xbe\x56\x25\x27\xeb\x52\xd1\x17\xf6\xa0\x9d\x06\xa7\xfe\x31\x61\x6b\x2d\xc1\x58\x02\xde\xd2\x81\xdd\xd1\x9e\x58\x78\x1c\x52\xed\x4c\xf7\xbb\x69\x3f\x2f\xb7\x4c\x37\x4e\x11\x06\x29\x5b\x56\x29\x2d\xd1\xc4\x71\x02\xf9\x8f\xc1\x2c\x61\xec\x33\xf9\xba\xc9\xf3\x03\xee\xc9\x41\xe7\x33\x24\x76\x91\xdb\xce\xf6\x1f\x7c\x57\xa7\x56\xae\xbe\x4d\xe7\x66\xbc\xb3\x73\x17\xf9\x2f\xd8\x31\xdc\x5c\x6e\xce\x3a\x90\x1d\xb0\xd8\xc2\x6a\x2b\x78\x68\x9a\xae\x9c\x25\x2b\xac\x6e\xb9\xb0\x25\xd1\xca\xdf\xb2\x61\x87\xf0\x84\x0e\xa3\x1c\xd8\x2d\x6c\xf0\xdd\x2b\xc2\xd6\xeb\xda\x2b\x53\x42\x7b\x84\xed\xca\x9b\x01\xf5\x2e\x2d\x6d\xd0\x06\x79\x69\x00\xb5\xc7\x23\x0e\xa2\xbf\x73\xbf\x14\xf8\xe1\x45\x9e\x0c\x45\xdf\x82\x9d\x09\xdc\x52\x49\x89\xa6\x5f\xcb\x26\x6a\x92\xe0\xc7\xdf\x00\x00\x00\xff\xff\x70\xbd\x7a\x61\x39\x06\x00\x00")
func jsCopyclipboardJsBytes() ([]byte, error) {
return bindataRead(
_jsCopyclipboardJs,
"js/copyclipboard.js",
)
}
func jsCopyclipboardJs() (*asset, error) {
bytes, err := jsCopyclipboardJsBytes()
if err != nil {
return nil, err
}
info := bindataFileInfo{name: "js/copyclipboard.js", size: 1593, mode: os.FileMode(420), modTime: time.Unix(1590859748, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}
var _jsDragdropJs = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\x94\x95\xcd\x6e\xdb\x46\x10\xc7\xef\x7e\x8a\x01\x7b\xa0\x08\x28\x94\x22\x20\x8e\x11\xd5\x39\xb4\x4e\xd1\x02\x4d\xd3\x83\x8d\x02\xbd\x0d\x77\x47\xe4\xd4\xab\x5d\x62\x77\x24\x86\x28\x72\xeb\x93\xf4\xd1\xfa\x24\xc5\x2e\x3f\x2c\xb7\xb6\x63\x9f\x04\x91\xf3\xf1\x9b\xff\xfc\x97\x9b\x1d\x02\x41\x10\xcf\x4a\xb2\xed\xd9\x59\xc7\x56\xbb\xae\x44\xad\x3f\x1c\xc9\xca\xcf\x1c\x84\x2c\xf9\x45\x7e\xf5\xe9\xe3\xf7\xce\x4a\x7c\xe6\x50\x93\xce\x97\xb0\xa0\x18\x52\xc0\xe5\x7b\xf8\xf3\x0c\x00\x60\xb5\x82\xeb\x86\x80\xf7\xad\xa1\x3d\x59\x41\x61\x67\xc1\xed\x40\x1a\x0e\xa0\x3d\xd6\xaf\xb4\x77\x2d\x18\x57\xb3\x02\x0e\x60\xd0\xd7\x64\x7a\xa8\x30\x90\x06\x67\x41\x1a\x9a\x2a\xa1\x0d\x1d\x79\xd0\x14\x94\xe7\x8a\x34\xb0\x85\x6f\x1b\x91\x36\xbc\x5b\xad\x82\xa0\xba\x75\x47\xf2\x3b\xe3\xba\x52\xb9\xfd\x0a\x57\x9b\x8b\xcd\xe6\x7c\xbd\xd9\xac\xde\x6c\xd6\x6f\xd7\x17\xaf\xdf\x97\x63\xa9\x53\xb6\x9a\x83\xc4\xce\x91\xe8\x1d\xd0\x91\x7c\x0f\xc2\x7b\x8a\x9d\x13\x21\x90\x15\xf2\x01\x10\x2c\x75\x70\xf5\xe9\x23\xb8\xea\x0f\x52\xb2\x04\x16\xe8\xd8\x98\xa9\xda\x8e\x3d\x8d\x51\x79\x4c\x4c\x79\x39\x24\x4d\x86\x51\x50\x80\x06\x21\x4a\x80\xeb\xf8\x97\x63\xdd\x16\xd9\x2e\xa1\x22\x85\x87\x30\x4f\xdb\x11\x68\x07\xd6\x09\xdc\x5a\xd7\x41\xd7\xb0\x6a\xa6\xec\xd4\x16\xaa\x81\xd1\x60\x10\x10\x07\x9e\x14\xf1\x31\x12\xc4\xe6\x86\xf0\x38\xd7\x4a\x08\xcb\xa8\x97\xc2\x30\x64\x1d\x02\x79\xc0\xca\x79\x09\xe9\x7f\xeb\x9d\xa2\x10\x1e\x50\xc8\xd3\xce\x79\x5a\x46\xa0\xe8\x0c\xb4\x70\x53\x9b\x1e\x7e\x44\x75\xfb\xcf\x5f\x7f\xa7\x41\xc8\xd3\x8c\x84\xf6\x84\x52\x1a\x60\x3d\xd5\xca\xe3\xaa\x7f\x77\x96\xf2\xe5\x38\x4e\x65\x9c\xba\x1d\xfa\x2b\x17\x3d\x22\x04\x2d\xd6\x54\x02\xfc\xd6\x90\x05\xfc\xbf\x90\x53\x31\x0e\xd3\xc0\xc9\x26\x68\xfb\xb4\x9a\xb1\x75\xa2\x4d\x44\x07\xdb\xb0\xa6\xc1\x6f\x7b\xa7\xd1\xa4\x06\xaf\x52\x67\xf2\xe5\xdd\x9c\x1c\x86\x84\xfa\x80\x1e\xad\x50\x9c\x76\x58\x59\xc4\xb3\xf4\x59\x20\xbf\xb7\xd1\x69\xe0\x13\x8c\xa9\x5a\xea\x76\xd7\xe7\xde\xd2\x39\x4c\xf9\x04\xa1\x41\x63\x80\x6b\xeb\x3c\x3d\xa0\xbc\x8d\x3a\x91\x8d\x9e\xbc\xdb\x59\x10\xd7\xc6\x7f\xec\x07\x77\xa2\x8a\x67\xea\x6e\xe0\xc9\x06\x27\x07\x27\x9f\x0d\x91\x8f\x47\x0a\xf2\x6f\xe6\x65\x9c\xd0\xfd\x12\x8d\x46\x93\xe1\xc8\x02\x7d\x46\x25\xa6\x9f\x4f\xe0\x69\xcb\xb8\x02\x85\x56\x91\x31\xa4\x61\x81\x56\xcf\x0c\xa3\xe4\x34\x2a\x3e\x36\x98\xab\x28\xe5\xbc\x66\x5b\x9b\xbe\x28\xcf\xd2\x53\x43\x02\x13\x10\x5c\x82\x76\xea\x90\x90\x6a\x92\x0f\x43\xf2\x77\xfd\x4f\x7a\x91\x4d\x31\x59\xb1\x4d\x79\x8f\x7d\x9c\xb2\xd9\x36\xd9\x03\x5f\xa5\x91\xe3\x66\x90\x13\xe3\x11\xb8\x37\xd9\x1c\x34\xb5\x2b\x83\xf4\x86\xca\x23\x07\xae\xd8\xb0\xf4\x70\x09\x59\xb6\x7d\x2c\xce\xb5\xa8\x86\xa0\xd7\x43\xcc\x97\x62\x3b\xcc\x39\x07\x3e\x44\xec\xda\xaf\xc1\xc6\x98\xc8\xba\x63\x43\xf3\xcb\x94\x50\xb6\x3e\xfd\x5e\xd1\x0e\x0f\x46\x16\xc5\x09\xdc\x63\x62\xc6\x2a\x37\xad\x71\xa8\x7f\x60\x32\x3a\x2b\xca\xf8\x24\xc0\xe5\x58\x52\xa3\xe0\xb5\x47\x1b\x76\xe4\x87\x57\x2f\x2b\xea\xfc\x3e\x2b\xca\x70\xa8\xf6\x3c\x03\x3d\x4f\x89\xd1\xad\x5f\x93\x63\x70\x5f\x78\xf9\xea\x1a\xd6\x9a\xec\x73\x16\xb8\xfe\x0f\xf6\x93\x86\x8b\xd7\xcf\x13\xcc\xbf\x0e\x2b\x4a\x07\xa3\xf2\xae\x8b\x23\xec\xbc\xdb\x83\x6b\xc9\xb2\xad\xd3\x8b\xa8\xdf\x7c\x17\xc4\x9b\x12\x13\xdc\xc9\xc7\x6f\xac\x36\x1e\xe4\x11\x08\x60\xf1\xe4\x55\x78\xfe\xf6\xcd\xf9\xf9\xc5\x7a\xbe\x09\x8b\x67\xd9\x27\x8e\xfd\xa5\xd8\xfe\x1b\x00\x00\xff\xff\xdf\xfa\x50\xb3\x12\x08\x00\x00")
func jsDragdropJsBytes() ([]byte, error) {
return bindataRead(
_jsDragdropJs,
"js/dragdrop.js",
)
}
func jsDragdropJs() (*asset, error) {
bytes, err := jsDragdropJsBytes()
if err != nil {
return nil, err
}
info := bindataFileInfo{name: "js/dragdrop.js", size: 2066, mode: os.FileMode(420), modTime: time.Unix(1609421047, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}
var _templatesHtmlBaseHtmlTmpl = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\x6c\x90\x31\x6f\x84\x30\x0c\x85\xf7\xfb\x15\xae\x77\xc8\xda\x21\xb0\xb4\x9d\x7b\x43\x97\x8e\x39\xf0\x29\xe8\x0c\x87\x12\x9f\x54\x14\xe5\xbf\x57\x38\x55\xc3\x70\x13\xb6\x1f\x7e\x9f\x5f\xec\xcb\xfb\xe7\xdb\xd7\xf7\xf9\x03\xbc\xcc\xdc\x9f\x6c\xf9\x00\x00\x58\x4f\x6e\x2c\xa5\xb6\x33\x89\x83\xc1\xbb\x10\x49\x3a\x7c\xc8\xb5\x79\xc5\x83\x2c\x93\x30\xf5\x29\x5d\xf8\x3e\xdc\x00\xb5\x45\x68\x73\x0e\x8f\xe8\x79\x5a\x6e\x29\xd1\x32\xe6\x6c\x4d\xf9\xb3\x6e\xee\x22\x04\xe2\x0e\xa3\x6c\x4c\xd1\x13\x09\x82\x6c\x2b\x75\x28\xf4\x23\x66\x88\x11\xc1\x07\xba\x76\xb8\xd7\x66\x76\xd3\xd2\xea\xd0\x54\x9b\x7f\xf2\x7e\x76\xe3\xd6\x95\x96\x51\xf9\xca\x85\x26\xe7\x92\xca\xd4\x58\xf6\x72\x1f\xb7\x27\x0e\xfb\x58\x57\xeb\x8d\x6b\xa0\xfe\x94\xd2\xe0\x98\xa1\x3d\x07\x3a\x6a\x46\xc5\xea\xa2\x31\xff\x60\x85\x60\x8d\x3e\xeb\x6f\x00\x00\x00\xff\xff\x1e\x3c\x4d\x87\x6d\x01\x00\x00")
func templatesHtmlBaseHtmlTmplBytes() ([]byte, error) {
return bindataRead(
_templatesHtmlBaseHtmlTmpl,
"templates/html/base.html.tmpl",
)
}
func templatesHtmlBaseHtmlTmpl() (*asset, error) {
bytes, err := templatesHtmlBaseHtmlTmplBytes()
if err != nil {
return nil, err
}
info := bindataFileInfo{name: "templates/html/base.html.tmpl", size: 365, mode: os.FileMode(420), modTime: time.Unix(1590859748, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}
var _templatesHtmlErrorHtmlTmpl = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\xaa\xae\x4e\x49\x4d\xcb\xcc\x4b\x55\x50\x2a\xc9\x2c\xc9\x49\x55\xaa\xad\xe5\x72\x2d\x2a\xca\x2f\x52\xd0\x55\x28\x2a\x2d\xce\xc8\xc9\xcc\xcb\xe6\xaa\xae\x4e\xcd\x4b\xa9\xad\x05\x04\x00\x00\xff\xff\x73\xdb\x0d\xaf\x2b\x00\x00\x00")
func templatesHtmlErrorHtmlTmplBytes() ([]byte, error) {
return bindataRead(
_templatesHtmlErrorHtmlTmpl,
"templates/html/error.html.tmpl",
)
}
func templatesHtmlErrorHtmlTmpl() (*asset, error) {
bytes, err := templatesHtmlErrorHtmlTmplBytes()
if err != nil {
return nil, err
}
info := bindataFileInfo{name: "templates/html/error.html.tmpl", size: 43, mode: os.FileMode(420), modTime: time.Unix(1568580372, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}
var _templatesHtmlIndexHtmlTmpl = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\xbc\x95\x4d\x6f\xe3\x36\x13\xc7\xef\xfc\x14\xb3\xf4\x61\x9f\x07\x88\xc5\x64\x8f\xae\x24\xf4\x0d\x01\x16\x70\x81\xc2\x5b\xa3\x40\x6f\xb4\x38\xb2\x98\x52\x1c\x81\x1c\xd9\x31\xbc\xfe\xee\x05\x29\x3b\x71\x52\x64\xd1\x00\x45\x6f\x1a\x72\xe6\x3f\xe4\x6f\x86\xa3\xe3\xd1\x60\x6b\x3d\x82\xec\x50\x9b\xb9\x1e\x06\xf4\x46\x9e\x4e\xa2\x8c\x4d\xb0\x03\x03\x1f\x06\xac\x24\xe3\x23\xab\x07\xbd\xd3\xd3\xaa\x84\x18\x9a\x4a\xaa\x87\xa8\x4c\xd0\x5b\x13\x68\x28\x1e\xa2\x04\x83\x2d\x86\xba\x54\x93\x57\x2d\x8e\x47\xf4\xe6\x74\x12\xe2\x39\xcd\x86\xcc\x21\xeb\x1b\xbb\x83\xc8\x07\x87\x95\xdc\xd9\x68\x37\xd6\x59\x3e\x2c\x3a\x6b\x0c\xfa\xef\x80\x06\xdd\x24\xfb\x56\x82\x35\x95\x4c\x19\xfe\x20\x8f\xb2\xbe\xb7\x0e\xc1\xfa\x86\x7a\xeb\xb7\x1f\x60\xf1\x73\xa9\x8c\xdd\xd5\xa2\xec\xee\xea\xd9\x6a\x0d\x83\x8e\x8c\x73\x33\xf6\x43\xa9\xba\xbb\x5a\x88\x1f\x75\x44\x03\xe4\xa1\x63\x1e\xe2\x42\xa9\xdb\xc7\xdb\x22\xb2\xba\x01\xee\x6c\x84\x68\x19\x41\x3b\x47\xfb\x08\x07\x1a\x81\x09\x50\x47\xeb\x0e\x30\x0e\x8e\xb4\x81\xd6\x3a\x8c\xa0\xbd\x81\xd8\x51\x60\xf4\xb0\x5e\x2d\x23\x8c\xd1\xfa\xad\xe0\x0e\xa1\xa1\xbe\x4f\xdb\xce\x7a\x2c\x84\x28\xbb\x4f\xf5\xef\xb8\x99\xff\xf0\xeb\xe7\x52\x75\x9f\x6a\x51\x46\x6c\xd8\x92\xaf\x05\x00\x40\xd9\x52\xe8\xf3\x9d\x92\xf0\x3a\xe7\xb8\xa7\xd0\x4b\xd0\xd9\xab\x92\x4a\x42\x8f\xdc\x91\xa9\xe4\x40\x91\x25\xa0\x6f\xa6\x2a\xf4\xa3\x63\x3b\xe8\xc0\x2a\x89\xcc\x8d\x66\x2d\x27\xd5\xac\xec\xf4\x06\x1d\x34\x4e\xc7\x58\xc9\xe4\xb1\x4c\x0b\x12\x5a\x0a\x2f\xb2\x59\x74\x46\xd6\x93\x01\x3a\x5f\x70\x51\xaa\x1c\x7d\xa5\x66\xfd\x30\xf2\xeb\x83\xe6\xd0\xeb\x14\xbf\x68\xeb\x25\x78\xdd\xe3\xe4\x27\xcf\x0d\x33\x7d\xab\x77\xeb\x7d\x19\x37\xbd\xe5\x8b\x4a\x3c\x5b\x3b\xed\x46\xac\xe4\x54\x91\x0f\x4f\xba\x65\xe6\x50\x8b\x52\x3d\x21\x7e\x0b\xf6\xb9\x76\xeb\xd5\xf2\xbf\x80\x7d\x95\xed\x15\xec\xf5\x6a\xf9\x4d\xd6\xaf\x23\xdf\x62\x7d\xf6\xbb\x80\x1a\x83\x7b\x8b\xf6\xb3\xe2\x85\xed\x3f\xc5\x7d\x8e\xfc\x26\xef\xdc\xee\x3f\x5d\xbd\x00\x78\xee\xfb\x21\x60\x2d\x66\xf0\xa2\xd1\x44\x33\x06\x07\xf3\xfb\x8f\xc9\xa8\xbe\x3f\xd0\x18\xd2\x57\x31\xf8\xed\x47\x28\x35\x74\x01\xdb\x4a\x1e\x8f\xc5\x8a\x88\xd7\xab\xe5\xe9\x24\xeb\x6b\xab\x54\xba\x16\x62\x06\x5f\xce\x6f\x31\x13\x7d\x12\x3d\x9f\xb8\x4a\x4f\x7d\xa1\x14\x3e\xea\x7e\x70\x58\x34\xd4\xab\x48\x3d\x2a\x47\x7e\xab\xc6\xe0\xde\x95\xea\xb7\x0e\xa1\xb5\x21\xf2\x74\x3f\x6a\x21\xbd\xfa\x80\x71\x74\x0c\x7b\xeb\x1c\x34\xe4\x59\x5b\x9f\xd7\xcf\x47\x40\x93\x0e\x56\x88\x99\x98\xc1\xe7\x69\x87\xb8\xc3\x90\x35\xe2\x4d\x1e\x35\x39\xb6\xb5\xde\x9c\xb7\xac\x4f\x78\x75\x02\x7b\x93\x46\x9c\x1b\x4d\x9a\x31\xb3\xeb\x8d\x3c\xc8\x68\x9f\xc6\x94\x41\x87\x8c\xaf\x92\xd2\xe6\x01\x1b\x2e\xc4\x33\x77\x1a\x39\xb5\x42\x1b\xa8\x07\xed\xa7\x4c\x43\xa0\x06\x63\x14\xad\xdd\x3a\x64\x58\x8d\xb1\x73\xd6\xff\x09\x5f\xe1\x65\x79\xe6\xef\x03\x45\x97\x99\x39\xd5\x3a\x0f\x4d\xf2\xee\x00\xf8\xc8\x41\x37\xfc\x77\x40\xf0\x3f\x5b\x60\x01\xdc\x05\xda\x83\xde\xeb\xc3\x85\x2d\xff\xff\xdf\xe8\x14\xf8\x0a\xe9\xb7\x06\x73\x0f\x77\xa2\x54\xb9\x21\x2f\xff\xa4\xbf\x02\x00\x00\xff\xff\x55\x95\x0e\x65\xfa\x06\x00\x00")
func templatesHtmlIndexHtmlTmplBytes() ([]byte, error) {
return bindataRead(
_templatesHtmlIndexHtmlTmpl,
"templates/html/index.html.tmpl",
)
}
func templatesHtmlIndexHtmlTmpl() (*asset, error) {
bytes, err := templatesHtmlIndexHtmlTmplBytes()
if err != nil {
return nil, err
}
info := bindataFileInfo{name: "templates/html/index.html.tmpl", size: 1786, mode: os.FileMode(420), modTime: time.Unix(1609421047, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}
var _templatesHtmlPastemetaHtmlTmpl = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\x94\x94\xc1\x6e\xdb\x38\x10\x86\xef\x7a\x8a\x01\x0f\x89\x73\x90\x75\x4f\x24\x2d\x76\x9d\x5d\x60\xd1\x1c\x8a\xd4\xe9\xa1\x37\x5a\x1c\xc7\x8c\x69\x92\x25\x47\x49\x0c\x82\xef\x5e\x50\xb4\x65\xa7\x71\x5b\xe7\x22\x40\xc3\xe1\xf7\xcf\x3f\x98\x61\x08\x02\x97\x52\x23\x30\x92\xa4\x90\xc5\x58\x5c\x86\x30\xfd\xcc\x3d\xe1\xf4\x13\x6e\x63\x0c\x61\xfa\x9f\x54\xf8\xef\x2b\xc5\x78\x09\x1b\x24\x2e\x38\x71\x28\xc1\xf5\x7e\xa5\xa4\x5e\x17\x21\xa0\x16\x31\x16\xc5\x01\xb6\x42\x2e\x4a\x6e\x2d\x6a\x91\x90\xb5\xef\x9c\xb4\x04\xb4\xb5\xd8\x30\xc2\x57\xaa\x9e\xf8\x33\xcf\x51\x06\xde\x75\x0d\xab\x9e\x7c\xd5\x19\xbb\xed\x94\xb4\x0b\xc3\x9d\x98\x3e\x79\x06\x02\x97\xe8\xda\xba\xca\xa9\xed\x29\xad\x85\x11\xdb\x41\xc4\x3a\x04\x29\x1a\x96\x28\x73\x33\xdb\x73\x66\x46\x13\x97\x1a\x1d\x83\x4e\x71\xef\x1b\xb6\x92\x42\xa0\x66\x6d\x51\x2f\x7a\x22\xa3\xc1\xe8\x4e\xc9\x6e\xfd\xee\xea\x24\xf5\xe2\xde\x18\x7a\xb8\xbf\x8b\xb1\xfa\x4d\x63\xae\x58\x3b\x33\x76\x0b\x0f\xf7\x77\x40\x06\x46\x13\x75\x95\x25\x5a\xa8\xbd\xe5\xfa\x54\x7d\x5f\x88\x53\xef\x59\x32\x69\xb9\x6e\x8b\xba\xb2\x0e\xdb\xc1\x4e\x5b\xd4\x1c\x56\x0e\x97\x0d\x3b\xb3\x10\xd6\x9e\x99\x58\x57\xbc\x2d\xca\xb2\x2c\x42\x90\x4b\xe0\x5a\xc0\x44\x23\xec\xb2\x53\x49\xe9\xeb\xa4\x7e\x04\x26\x50\x21\xa1\x60\x57\x30\x9d\x71\x7d\x3b\xfc\xfd\x63\x8c\x8a\xb1\x78\x91\xb4\x82\x7c\x0e\x64\xd6\xa8\xaf\xe1\xa3\x15\xff\x95\xaf\xcf\xd3\xed\x66\x4c\xbb\x3d\x04\x3f\x60\xea\x0c\xd6\xe0\x3b\x04\x54\x1e\xa1\x3c\xed\xe0\x42\xd1\x4d\xaf\xd7\xda\xbc\xe8\x8b\x47\xba\xc9\x33\x37\x24\xa7\xf9\xbd\x86\x11\x3c\xdf\x5a\x8c\xb1\xf0\xa9\x5b\x47\xe1\xa1\x7b\x31\xe6\xce\xee\x62\x33\x87\x9c\x50\xfc\x4d\xd3\xff\xfd\x37\x74\x66\xc0\x75\x39\x78\x0d\x3b\xb5\xe3\xba\xc6\xb3\x11\x3b\x22\x06\xf4\xbe\xa4\x63\x91\x07\x2b\xde\x8b\x28\xee\x09\xfa\x7c\x72\x52\xe9\x6d\xc2\x28\x37\xc2\x7e\x29\x97\xfb\x9a\xe4\xbe\x72\x25\xf3\xf9\x6e\x56\x80\xd3\x11\xea\x90\x38\x97\x1b\x7c\xc3\x7b\xdb\xf9\x10\x0e\x13\x96\xa7\x2f\xed\xf5\xd2\xb8\x0d\xf0\x8e\xa4\xd1\xcd\x6e\x18\xcf\x19\x9a\xf4\x56\xad\x8c\x68\x98\x35\x9e\xd2\xb2\x4b\x6d\xfb\xfd\x1b\xe4\xfb\xc5\x46\x12\x03\xcd\x37\xb8\x87\x32\x78\xe6\xaa\xc7\x86\x65\x0e\xd8\x04\x65\x45\x08\x25\xc8\x25\x18\x07\x13\xfc\xfe\xa7\x0d\x99\x68\x43\x3f\xad\xc9\x55\x36\x2a\x3d\x5f\x28\x14\x03\x6e\xef\x3e\x2d\x7b\x72\x37\x2e\xfd\xfe\x79\xfb\x11\x00\x00\xff\xff\x3a\xc6\xf5\xbb\x97\x05\x00\x00")
func templatesHtmlPastemetaHtmlTmplBytes() ([]byte, error) {
return bindataRead(
_templatesHtmlPastemetaHtmlTmpl,
"templates/html/pasteMeta.html.tmpl",
)
}
func templatesHtmlPastemetaHtmlTmpl() (*asset, error) {
bytes, err := templatesHtmlPastemetaHtmlTmplBytes()
if err != nil {
return nil, err
}
info := bindataFileInfo{name: "templates/html/pasteMeta.html.tmpl", size: 1431, mode: os.FileMode(420), modTime: time.Unix(1620245565, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}
var _templatesTxtBaseTxtTmpl = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\x01\x00\x00\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00")
func templatesTxtBaseTxtTmplBytes() ([]byte, error) {
return bindataRead(
_templatesTxtBaseTxtTmpl,
"templates/txt/base.txt.tmpl",
)
}
func templatesTxtBaseTxtTmpl() (*asset, error) {
bytes, err := templatesTxtBaseTxtTmplBytes()
if err != nil {
return nil, err
}
info := bindataFileInfo{name: "templates/txt/base.txt.tmpl", size: 0, mode: os.FileMode(420), modTime: time.Unix(1568569370, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}
var _templatesTxtErrorTxtTmpl = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\xaa\xae\xd6\xf3\x4d\x2d\x2e\x4e\x4c\x4f\xad\xad\x05\x04\x00\x00\xff\xff\xa1\x68\xe0\xbd\x0c\x00\x00\x00")
func templatesTxtErrorTxtTmplBytes() ([]byte, error) {
return bindataRead(
_templatesTxtErrorTxtTmpl,
"templates/txt/error.txt.tmpl",
)
}
func templatesTxtErrorTxtTmpl() (*asset, error) {
bytes, err := templatesTxtErrorTxtTmplBytes()
if err != nil {
return nil, err
}
info := bindataFileInfo{name: "templates/txt/error.txt.tmpl", size: 12, mode: os.FileMode(420), modTime: time.Unix(1568575116, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}
var _templatesTxtIndexTxtTmpl = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\x8c\x91\xcf\x6a\xdc\x30\x10\xc6\xef\x7a\x8a\x0f\x7c\x48\x0b\xbb\x76\x7a\x0d\x2c\xb4\x85\xed\x1f\x08\x2d\x78\xe3\x07\x50\xed\xf1\x5a\xed\x58\x63\xa4\x11\x5e\x93\xe4\xdd\x8b\x9c\x6d\xd9\x26\x3d\x44\x27\x49\xc3\xcc\xef\xe3\x37\x45\xdd\xa0\xa9\x6f\x71\xf8\xf2\xbd\xbe\xdb\x7f\xdb\xd7\x66\xf7\xfc\x18\xf3\xd1\x46\xea\x20\x1e\x83\xea\x14\x6f\xaa\xea\xfa\x74\x5d\x46\xad\x36\xd0\xc1\x45\x44\xa7\x04\xcb\x2c\x73\xc4\x22\x09\x2a\x20\x1b\x1d\x2f\x88\x83\x04\x25\x9f\x09\x11\x29\x3a\x7f\x34\x3a\x10\x5a\x19\x47\xeb\x3b\xb0\xf3\x54\x1a\x53\x14\x68\x0e\x1f\x3e\xef\x8d\x29\xd0\x4c\x2c\xb6\x83\x45\xef\x98\x4c\x9b\x02\x63\xfb\xe9\x2a\x3f\x76\xef\x17\x49\x21\xdf\xca\xc9\x1f\xaf\x70\x7f\x5f\xd6\x22\xda\xd4\xb7\x8f\x8f\xb9\xf3\x70\x66\xd9\x4c\xfb\xdb\x79\x4e\xb0\xcb\xc9\x6f\xaa\x8a\x4e\x76\x9c\x98\xca\x56\xc6\x2a\xca\x48\x15\x8b\x3f\x56\x29\xf0\xcb\x79\x77\x03\xa1\x77\x21\xea\x1a\x13\xd2\x23\x47\x0f\x14\x13\x2b\x66\xc7\x8c\x56\xbc\x5a\xe7\xd7\xff\x33\x87\xba\x4c\x2f\x4d\x61\x0a\x7c\x7d\xaa\x88\x0e\x14\xd6\x19\x71\xb3\xea\x59\x7b\x7b\xe7\xbb\x73\xc9\xf9\x5e\xc2\x68\xd5\x89\xdf\xc0\xf9\x96\x53\x97\x45\x15\x97\x85\x55\xbe\xcc\x59\x6d\x47\x4c\x4a\xcf\xa0\xf2\xe3\x27\xb5\x5a\x5e\x18\x94\xa4\x53\x52\xf4\x41\x46\x58\xff\x44\x9a\x82\xb4\x14\xa3\xe9\xdd\x91\x49\x51\xa7\x38\xb0\xf3\xbf\xf0\x80\x7f\x45\x6f\xff\x63\x43\x90\x2e\x57\x83\xbc\x3f\xf1\xbc\x80\x4e\x1a\x6c\xab\x2f\x2d\xe0\x8d\x2b\xa9\x84\x0e\x41\x66\xd8\xd9\x2e\x7f\x04\xea\xdb\x57\x2f\x16\x0f\x18\xc8\x76\xd8\x7a\xbc\x33\xbf\x03\x00\x00\xff\xff\x54\x6e\xbb\xfa\xac\x02\x00\x00")
func templatesTxtIndexTxtTmplBytes() ([]byte, error) {
return bindataRead(
_templatesTxtIndexTxtTmpl,
"templates/txt/index.txt.tmpl",
)
}
func templatesTxtIndexTxtTmpl() (*asset, error) {
bytes, err := templatesTxtIndexTxtTmplBytes()
if err != nil {
return nil, err
}
info := bindataFileInfo{name: "templates/txt/index.txt.tmpl", size: 684, mode: os.FileMode(420), modTime: time.Unix(1590859748, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}
var _templatesTxtPastemetaTxtTmpl = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\xac\x51\x4f\x4b\x3b\x31\x10\xbd\xe7\x53\x0c\xf9\x5d\x7e\x82\x89\xf7\xe2\x1f\xb4\x5d\x41\xec\x41\xea\x7a\xf1\xd4\x65\x77\x6a\x43\x97\xa4\x6e\x66\x69\x97\x30\xdf\x5d\x36\xa9\xb1\xa8\x07\x41\x2f\x81\xcc\xbc\x79\xef\xcd\x9b\x10\xf4\xc2\x39\x7a\x5a\xcc\x99\xcf\x42\xd0\x0f\x95\x27\xd4\xf7\x38\x30\x87\xa0\x6f\x4d\x8b\xc5\x9e\x98\x85\x52\x4a\x84\x60\x56\x50\xd9\x06\xfe\x5b\x84\x03\xf2\x91\xaa\xf8\x76\xc6\xbe\x80\x6c\xb0\x45\xc2\x46\x9e\x80\x9e\x56\x76\x16\x7f\x37\xce\xb5\xcc\x62\x67\x68\x0d\xa9\x0f\xe4\x36\x68\x27\xf0\x43\xed\xab\x34\x55\x8e\x43\x17\x19\x36\xfb\x28\x32\x8b\x10\xb0\xf5\x08\xea\x7b\xa1\xf3\xde\x6e\xac\xdb\xd9\xcb\x11\x67\x9b\x11\x46\xc3\x16\xa3\x83\xc4\x56\x0e\x5b\x64\x16\x7e\xdc\xe6\xa8\x1c\xb7\x8b\xf4\x66\xf5\xbe\xf1\xb4\xc3\x8a\xb0\xb9\x26\x7d\xe7\x9f\xb1\x73\x51\xb4\x4e\xc5\x09\x1c\x94\x8e\x0d\xe5\x5e\xa6\xcd\x14\xc9\x79\x72\x24\xbe\x84\x93\x23\x4c\xf1\x32\x8b\xdf\x9d\x60\xb9\x5c\x8a\x7f\x50\xba\x9c\xce\xda\xf8\xcf\x11\x9c\x02\xee\xb1\xee\x09\x27\xa2\xee\xbb\x16\x94\xea\xf0\xb5\x47\x4f\x20\x67\xc5\xbc\x28\x0b\x09\xf2\xef\xee\x26\xa3\xa7\x18\x01\xb3\x78\x0b\x00\x00\xff\xff\x81\xcd\x43\x9e\x8c\x02\x00\x00")
func templatesTxtPastemetaTxtTmplBytes() ([]byte, error) {
return bindataRead(
_templatesTxtPastemetaTxtTmpl,
"templates/txt/pasteMeta.txt.tmpl",
)
}
func templatesTxtPastemetaTxtTmpl() (*asset, error) {
bytes, err := templatesTxtPastemetaTxtTmplBytes()
if err != nil {
return nil, err
}
info := bindataFileInfo{name: "templates/txt/pasteMeta.txt.tmpl", size: 652, mode: os.FileMode(420), modTime: time.Unix(1620245565, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}
// Asset loads and returns the asset for the given name.
// It returns an error if the asset could not be found or
// could not be loaded.
func Asset(name string) ([]byte, error) {
cannonicalName := strings.Replace(name, "\\", "/", -1)
if f, ok := _bindata[cannonicalName]; ok {
a, err := f()
if err != nil {
return nil, fmt.Errorf("Asset %s can't read by error: %v", name, err)
}
return a.bytes, nil
}
return nil, fmt.Errorf("Asset %s not found", name)
}
// MustAsset is like Asset but panics when Asset would return an error.
// It simplifies safe initialization of global variables.
func MustAsset(name string) []byte {
a, err := Asset(name)
if err != nil {
panic("asset: Asset(" + name + "): " + err.Error())
}
return a
}
// AssetInfo loads and returns the asset info for the given name.
// It returns an error if the asset could not be found or
// could not be loaded.
func AssetInfo(name string) (os.FileInfo, error) {
cannonicalName := strings.Replace(name, "\\", "/", -1)
if f, ok := _bindata[cannonicalName]; ok {
a, err := f()
if err != nil {
return nil, fmt.Errorf("AssetInfo %s can't read by error: %v", name, err)
}
return a.info, nil
}
return nil, fmt.Errorf("AssetInfo %s not found", name)
}
// AssetNames returns the names of the assets.
func AssetNames() []string {
names := make([]string, 0, len(_bindata))
for name := range _bindata {
names = append(names, name)
}
return names
}
// _bindata is a table, holding each asset generator, mapped to its name.
var _bindata = map[string]func() (*asset, error){
"css/main.css": cssMainCss,
"js/copyclipboard.js": jsCopyclipboardJs,
"js/dragdrop.js": jsDragdropJs,
"templates/html/base.html.tmpl": templatesHtmlBaseHtmlTmpl,
"templates/html/error.html.tmpl": templatesHtmlErrorHtmlTmpl,
"templates/html/index.html.tmpl": templatesHtmlIndexHtmlTmpl,
"templates/html/pasteMeta.html.tmpl": templatesHtmlPastemetaHtmlTmpl,
"templates/txt/base.txt.tmpl": templatesTxtBaseTxtTmpl,
"templates/txt/error.txt.tmpl": templatesTxtErrorTxtTmpl,
"templates/txt/index.txt.tmpl": templatesTxtIndexTxtTmpl,
"templates/txt/pasteMeta.txt.tmpl": templatesTxtPastemetaTxtTmpl,
}
// AssetDir returns the file names below a certain
// directory embedded in the file by go-bindata.
// For example if you run go-bindata on data/... and data contains the
// following hierarchy:
// data/
// foo.txt
// img/
// a.png
// b.png
// then AssetDir("data") would return []string{"foo.txt", "img"}
// AssetDir("data/img") would return []string{"a.png", "b.png"}
// AssetDir("foo.txt") and AssetDir("notexist") would return an error
// AssetDir("") will return []string{"data"}.
func AssetDir(name string) ([]string, error) {
node := _bintree
if len(name) != 0 {
cannonicalName := strings.Replace(name, "\\", "/", -1)
pathList := strings.Split(cannonicalName, "/")
for _, p := range pathList {
node = node.Children[p]
if node == nil {
return nil, fmt.Errorf("Asset %s not found", name)
}
}
}
if node.Func != nil {
return nil, fmt.Errorf("Asset %s not found", name)
}
rv := make([]string, 0, len(node.Children))
for childName := range node.Children {
rv = append(rv, childName)
}
return rv, nil
}
type bintree struct {
Func func() (*asset, error)
Children map[string]*bintree
}
var _bintree = &bintree{nil, map[string]*bintree{
"css": &bintree{nil, map[string]*bintree{
"main.css": &bintree{cssMainCss, map[string]*bintree{}},
}},
"js": &bintree{nil, map[string]*bintree{
"copyclipboard.js": &bintree{jsCopyclipboardJs, map[string]*bintree{}},
"dragdrop.js": &bintree{jsDragdropJs, map[string]*bintree{}},
}},
"templates": &bintree{nil, map[string]*bintree{
"html": &bintree{nil, map[string]*bintree{
"base.html.tmpl": &bintree{templatesHtmlBaseHtmlTmpl, map[string]*bintree{}},
"error.html.tmpl": &bintree{templatesHtmlErrorHtmlTmpl, map[string]*bintree{}},
"index.html.tmpl": &bintree{templatesHtmlIndexHtmlTmpl, map[string]*bintree{}},
"pasteMeta.html.tmpl": &bintree{templatesHtmlPastemetaHtmlTmpl, map[string]*bintree{}},
}},
"txt": &bintree{nil, map[string]*bintree{
"base.txt.tmpl": &bintree{templatesTxtBaseTxtTmpl, map[string]*bintree{}},
"error.txt.tmpl": &bintree{templatesTxtErrorTxtTmpl, map[string]*bintree{}},
"index.txt.tmpl": &bintree{templatesTxtIndexTxtTmpl, map[string]*bintree{}},
"pasteMeta.txt.tmpl": &bintree{templatesTxtPastemetaTxtTmpl, map[string]*bintree{}},
}},
}},
}}
// RestoreAsset restores an asset under the given directory
func RestoreAsset(dir, name string) error {
data, err := Asset(name)
if err != nil {
return err
}
info, err := AssetInfo(name)
if err != nil {
return err
}
err = os.MkdirAll(_filePath(dir, filepath.Dir(name)), os.FileMode(0755))
if err != nil {
return err
}
err = ioutil.WriteFile(_filePath(dir, name), data, info.Mode())
if err != nil {
return err
}
err = os.Chtimes(_filePath(dir, name), info.ModTime(), info.ModTime())
if err != nil {
return err
}
return nil
}
// RestoreAssets restores an asset under the given directory recursively
func RestoreAssets(dir, name string) error {
children, err := AssetDir(name)
// File
if err != nil {
return RestoreAsset(dir, name)
}
// Dir
for _, child := range children {
err = RestoreAssets(dir, filepath.Join(name, child))
if err != nil {
return err
}
}
return nil
}
func _filePath(dir, name string) string {
cannonicalName := strings.Replace(name, "\\", "/", -1)
return filepath.Join(append([]string{dir}, strings.Split(cannonicalName, "/")...)...)
}

View File

@ -6,32 +6,28 @@ import (
"gitea.hashru.nl/dsprenkels/rushlink"
"gitea.hashru.nl/dsprenkels/rushlink/internal/db"
"github.com/pkg/errors"
)
var (
databasePath = flag.String("database", "", "location of the database file")
fileStorePath = flag.String("file-store", "", "path to the directory where uploaded files will be stored")
httpListen = flag.String("listen", "127.0.0.1:8000", "listen address (host:port)")
metricsListen = flag.String("metrics_listen", "127.0.0.1:58614", "listen address for metrics (host:port)")
rootURL = flag.String("root_url", "", "host root (example: 'https://example.com', uses an educated guess if omitted)")
)
func main() {
flag.Parse()
filestore, err := db.OpenFileStoreFromEnvironment()
database, err := db.OpenDB(*databasePath)
if err != nil {
log.Fatalln(err)
}
database, err := db.OpenDBFromEnvironment()
defer database.Close()
filestore, err := db.OpenFileStore(*fileStorePath)
if err != nil {
log.Fatalln(err)
}
migrate := db.Gormigrate(database)
if err := migrate.Migrate(); err != nil {
log.Fatal(errors.Wrap(err, "migrating database"))
}
go rushlink.StartMetricsServer(*metricsListen, database, filestore)
rushlink.StartMainServer(*httpListen, database, filestore, *rootURL)
go rushlink.StartMetricsServer(*metricsListen, database)
rushlink.StartMainServer(*httpListen, database, filestore)
}

View File

@ -1,122 +0,0 @@
#!/usr/bin/env sh
set -e
LINK=https://hashru.link/
DELFILE="${XDG_DATA_HOME:-$HOME/.local/share}/rushlink/delete"
link() {
case "$1" in
https://*|http://*)
printf '%s' "$1" | curl -sS -F'shorten=<-' "$LINK"
;;
*)
curl -sS -Ffile=@- "$LINK" < "$1"
;;
esac | awk 'NR == 1 { print } $NF ~ /deleteToken=/ { print $NF; exit }' | (
IFS= read -r link
IFS= read -r deletelink
echo "$link"
mkdir -p "$(dirname "$DELFILE")"
echo "$deletelink" >> "$DELFILE"
)
}
del() {
case "$1" in
https://*|http://*)
URL="$1"
;;
*)
URL="$LINK$1"
;;
esac
# Remove file extension, if any.
NAME="${URL##*/}"
URL="${URL%/*}/${NAME%%.*}"
if DELURL=$(grep -s -m1 "$URL?deleteToken=" "$DELFILE"); then
echo "Deleting $URL..." >&2
curl -sS -X DELETE "$DELURL" | grep deleted
else
echo "Delete token for $URL is not known." >&2
exit 1
fi
}
screenshot() {
if command -v import >/dev/null 2>&1; then
CMD="import png:-"
elif command -v maim >/dev/null 2>&1; then
CMD="maim -uks"
else
echo "Neither import (imagemagick) nor maim were found. One of these is needed to make screenshots." >&2
exit 1
fi
FILE=$(mktemp)
if $CMD > "$FILE"; then
LINK=$(link "$FILE")
rm -f "$FILE"
echo "$LINK.png"
if command -v xdg-open >/dev/null 2>&1; then
xdg-open "$LINK.png"
fi
else
rm -f "$FILE"
exit $?
fi
}
if [ $# -gt 0 ]; then
case "$1" in
--help|-h)
CMD=$(basename "$0")
echo "$CMD - Command line tool for $LINK"
echo
echo "Usage:"
echo " $CMD https://example.com/"
echo " Shorten link."
echo " $CMD file.txt"
echo " $CMD < file.txt"
echo " Upload file."
echo " $CMD"
echo " echo hi | $CMD"
echo " Upload file from standard input."
echo " $CMD (--screenshot|-s)"
echo " Select a window or an area of your screen, and upload it as png."
echo " $CMD (--delete|-d) ${LINK}xd42"
echo " $CMD (--delete|-d) xd42"
echo " Delete file or shortened link."
echo
echo "Delete tokens are stored in $DELFILE"
exit 0
;;
--delete|-d)
shift
for url in "$@"; do
del "$url"
done
exit 0
;;
--screenshot|-s)
shift
if [ $# -gt 0 ]; then
echo "No arguments expected to --screenshot" >&2
exit 1
fi
screenshot
exit 0
;;
*)
for url in "$@"; do
link "$url"
done
exit 0
esac
fi
if [ -t 0 ]; then
echo "Sending standard input to $LINK" >&2
echo "^C to cancel, ^D to send." >&2
fi
link /dev/stdin

View File

@ -7,6 +7,9 @@ import (
"github.com/pkg/errors"
)
// Where to store the uploaded files
var fileStoreDir = ""
// FileUploadFileSystem is a HTTP filesystem handler
type FileUploadFileSystem struct {
fs http.FileSystem

59
go.mod
View File

@ -3,58 +3,9 @@ module gitea.hashru.nl/dsprenkels/rushlink
go 1.12
require (
github.com/Masterminds/semver/v3 v3.1.1 // indirect
github.com/beorn7/perks v1.0.1 // indirect
github.com/cespare/xxhash/v2 v2.1.2 // indirect
github.com/cockroachdb/apd v1.1.0 // indirect
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/denisenkom/go-mssqldb v0.11.0 // indirect
github.com/go-gormigrate/gormigrate/v2 v2.0.0
github.com/go-kit/kit v0.10.0 // indirect
github.com/go-sql-driver/mysql v1.6.0 // indirect
github.com/gofrs/uuid v4.0.0+incompatible // indirect
github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe // indirect
github.com/golang/protobuf v1.5.2 // indirect
github.com/google/go-cmp v0.5.6 // indirect
github.com/google/uuid v1.3.0
github.com/gorilla/mux v1.8.0
github.com/jackc/chunkreader/v2 v2.0.1 // indirect
github.com/jackc/pgconn v1.10.0 // indirect
github.com/jackc/pgio v1.0.0 // indirect
github.com/jackc/pgmock v0.0.0-20210724152146-4ad1a8207f65 // indirect
github.com/jackc/pgpassfile v1.0.0 // indirect
github.com/jackc/pgproto3/v2 v2.1.1 // indirect
github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b // indirect
github.com/jackc/pgtype v1.8.1 // indirect
github.com/jackc/pgx/v4 v4.13.0 // indirect
github.com/jinzhu/inflection v1.0.0 // indirect
github.com/jinzhu/now v1.1.2 // indirect
github.com/joho/godotenv v1.4.0 // indirect
github.com/kr/pretty v0.3.0 // indirect
github.com/kr/text v0.2.0 // indirect
github.com/lib/pq v1.10.3 // indirect
github.com/mattn/go-sqlite3 v1.14.8 // indirect
github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
github.com/pkg/errors v0.9.1
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/prometheus/client_golang v1.11.0
github.com/prometheus/client_model v0.2.0 // indirect
github.com/prometheus/common v0.31.1 // indirect
github.com/prometheus/procfs v0.7.3 // indirect
github.com/rogpeppe/go-internal v1.8.0 // indirect
github.com/shopspring/decimal v1.2.0 // indirect
github.com/stretchr/testify v1.7.0 // indirect
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
golang.org/x/sys v0.0.0-20211002104244-808efd93c36d // indirect
golang.org/x/text v0.3.7 // indirect
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
google.golang.org/protobuf v1.27.1 // indirect
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
gopkg.in/yaml.v2 v2.4.0 // indirect
gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
gorm.io/driver/mysql v1.1.2 // indirect
gorm.io/driver/postgres v1.1.2
gorm.io/driver/sqlite v1.1.5
gorm.io/driver/sqlserver v1.0.9 // indirect
gorm.io/gorm v1.21.15
github.com/google/uuid v1.1.1
github.com/gorilla/mux v1.7.3
github.com/pkg/errors v0.8.1
github.com/prometheus/client_golang v1.1.0
go.etcd.io/bbolt v1.3.3
)

871
go.sum
View File

@ -1,916 +1,75 @@
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
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/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/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
github.com/Masterminds/semver/v3 v3.1.1 h1:hLg3sBzpNErnxhQtUy/mmLR2I9foDujNK030IGemrRc=
github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
github.com/PuerkitoBio/goquery v1.5.1/go.mod h1:GsLWisAFVj4WgDibEWF4pvYnkVQBpKBKeU+7zCJoLcc=
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/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g=
github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
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/andybalholm/cascadia v1.1.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
github.com/apache/thrift v0.13.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
github.com/aryann/difflib v0.0.0-20170710044230-e206f873d14a/go.mod h1:DAHtR1m6lCRdSC2Tm3DSWRPvIPr6xNKyeHdqDQSQT+A=
github.com/aws/aws-lambda-go v1.13.3/go.mod h1:4UKl9IzQMoD+QF79YdCuzCwp8VbmG4VAQwij/eHl5CU=
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golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
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sourcegraph.com/sourcegraph/appdash v0.0.0-20190731080439-ebfcffb1b5c0/go.mod h1:hI742Nqp5OhwiqlzhgfbWU4mW4yO10fP+LoT9WOswdU=

View File

@ -3,38 +3,19 @@ package rushlink
import (
"crypto/subtle"
"fmt"
"io"
"log"
"mime/multipart"
"net/http"
"net/url"
"os"
"strings"
"time"
"gitea.hashru.nl/dsprenkels/rushlink/internal/db"
"github.com/google/uuid"
"github.com/gorilla/mux"
"github.com/pkg/errors"
)
const (
// formParseMaxMemory value is based on the default value that is used in
// Request.ParseMultipartForm.
formParseMaxMemory = 32 << 20 // 32 MB
// highOnlineEntropy is the desired entropy of an "unguessable" paste URL
// (in bits). It should be chosen such that it should be hard for an
// attacker to find *any* key that should not be found.
// It is desired that the probability to guess a good key is small.
//
// [ amount of pastes ]
// Pr[ good key ] = ---------------------------
// [ amount of possible keys ]
//
// So with a conservative [ amount of pastes ] = 2^32 (= 4 billion), and
// an [ amount of possible keys ] = 2^80 then the probability of a correct
// guess is 2^-48.
highOnlineEntropy = 80
bolt "go.etcd.io/bbolt"
)
type viewPaste uint
@ -45,58 +26,69 @@ const (
viewShowMeta
)
type canDelete uint
const (
canDeleteUndef canDelete = iota
canDeleteYes
canDeleteNo
)
func (cd *canDelete) Bool() bool {
return *cd == canDeleteYes
}
func (cd *canDelete) String() string {
switch *cd {
case canDeleteUndef:
return "undefined"
case canDeleteYes:
return "correct"
case canDeleteNo:
return "invalid"
default:
panic("unreachable")
}
}
func (rl *rushlink) staticGetHandler(w http.ResponseWriter, r *http.Request) {
rl.renderStatic(w, r, mux.Vars(r)["path"])
}
const cookieDeleteToken = "owner_token"
func (rl *rushlink) indexGetHandler(w http.ResponseWriter, r *http.Request) {
rl.render(w, r, http.StatusOK, "index", map[string]interface{}{})
render(w, r, "index", map[string]interface{}{})
}
func (rl *rushlink) uploadFileGetHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
id := vars["id"]
var fu *db.FileUpload
var badID bool
if err := rl.db.Bolt.View(func(tx *bolt.Tx) error {
fuID, err := uuid.Parse(id)
if err != nil {
badID = true
return err
}
fu, err = db.GetFileUpload(tx, fuID)
return err
}); err != nil {
if badID {
renderError(w, r, http.StatusNotFound, "malformed file id")
return
} else {
panic(err)
}
}
filePath := rl.fs.FilePath(fu.ID, fu.FileName)
file, err := os.Open(filePath)
if err != nil {
if os.IsNotExist(err) {
log.Printf("error: %v should exist according to the database, but it doesn't", filePath)
renderError(w, r, http.StatusNotFound, "file not found")
return
} else {
panic(err)
}
}
w.Header().Set("Content-Type", fu.ContentType)
io.Copy(w, file)
}
func (rl *rushlink) viewPasteHandler(w http.ResponseWriter, r *http.Request) {
rl.viewPasteHandlerFlags(w, r, 0)
rl.viewPasteHandlerInner(w, r, 0)
}
func (rl *rushlink) viewPasteHandlerNoRedirect(w http.ResponseWriter, r *http.Request) {
rl.viewPasteHandlerFlags(w, r, viewNoRedirect)
rl.viewPasteHandlerInner(w, r, viewNoRedirect)
}
func (rl *rushlink) viewPasteHandlerMeta(w http.ResponseWriter, r *http.Request) {
rl.viewPasteHandlerFlags(w, r, viewShowMeta)
rl.viewPasteHandlerInner(w, r, viewShowMeta)
}
func (rl *rushlink) viewPasteHandlerFlags(w http.ResponseWriter, r *http.Request, flags viewPaste) {
func (rl *rushlink) viewPasteHandlerInner(w http.ResponseWriter, r *http.Request, flags viewPaste) {
vars := mux.Vars(r)
key := vars["key"]
var p *db.Paste
var fuID *uuid.UUID
var fu *db.FileUpload
var notFound bool
err := rl.db.Transaction(func(tx *db.Database) error {
if err := rl.db.Bolt.View(func(tx *bolt.Tx) error {
var err error
p, err = db.GetPaste(tx, key)
if err != nil {
@ -105,184 +97,103 @@ func (rl *rushlink) viewPasteHandlerFlags(w http.ResponseWriter, r *http.Request
if p != nil && p.Type == db.PasteTypeFileUpload {
var id uuid.UUID
copy(id[:], p.Content)
fuID = &id
fu, err = db.GetFileUpload(tx, id)
if err != nil {
return err
}
}
return nil
})
if notFound {
err = db.ErrPasteDoesNotExist
}
if err != nil {
status := db.ErrHTTPStatusCode(err)
if status == http.StatusInternalServerError {
}); err != nil {
panic(err)
}
rl.renderError(w, r, status, err.Error())
if p == nil {
renderError(w, r, http.StatusNotFound, "url key not found in the database")
return
}
rl.viewPasteHandlerInner(w, r, flags, p, fu)
if flags&viewShowMeta != 0 {
canDelete := struct {
Bool bool
String string
}{Bool: false}
deleteToken := getDeleteTokenFromRequest(r)
if deleteToken == "" {
canDelete.String = "undefined"
} else {
if subtle.ConstantTimeCompare([]byte(deleteToken), []byte(p.DeleteToken)) == 1 {
canDelete.Bool = true
canDelete.String = "correct"
} else {
canDelete.String = "invalid"
}
}
func (rl *rushlink) viewPasteHandlerInner(w http.ResponseWriter, r *http.Request, flags viewPaste, p *db.Paste, fu *db.FileUpload) {
if flags&viewShowMeta != 0 {
rl.viewPasteHandlerInnerMeta(w, r, p, fu)
data := map[string]interface{}{
"Paste": p,
"CanDelete": canDelete,
}
render(w, r, "pasteMeta", data)
return
}
switch p.State {
case db.PasteStatePresent:
var location string
switch p.Type {
case db.PasteTypeFileUpload:
if fu == nil {
panic(fmt.Sprintf("file for id %v does not exist in database\n", string(p.Content)))
panic(fmt.Sprintf("file for id %v does not exist in database\n", fuID))
}
rl.viewFileUploadHandler(w, r, fu)
return
location = fu.URL().String()
break
case db.PasteTypeRedirect:
if flags&viewNoRedirect != 0 {
w.Write([]byte(p.RedirectURL().String()))
return
}
http.Redirect(w, r, p.RedirectURL().String(), http.StatusTemporaryRedirect)
return
location = p.RedirectURL().String()
break
default:
panic("paste type unsupported")
}
if flags&viewNoRedirect == 0 {
http.Redirect(w, r, location, http.StatusSeeOther)
}
fmt.Fprint(w, location)
case db.PasteStateDeleted:
rl.renderError(w, r, http.StatusGone, "paste has been deleted\n")
return
renderError(w, r, http.StatusGone, "paste has been deleted\n")
default:
panic(errors.Errorf("invalid paste.State (%v) for key '%v'", p.State, p.Key))
}
}
func (rl *rushlink) viewFileUploadHandler(w http.ResponseWriter, r *http.Request, fu *db.FileUpload) {
filePath := fu.Path(rl.fs)
file, err := os.Open(filePath)
if err != nil {
if os.IsNotExist(err) {
log.Printf("error: '%v' should exist according to the database, but it doesn't", filePath)
rl.renderError(w, r, http.StatusNotFound, "file not found")
return
}
// unexpected error
panic(err)
}
var modtime time.Time
info, err := file.Stat()
if err != nil {
log.Printf("error: %v", errors.Wrapf(err, "could not stat file '%v'", filePath))
} else {
modtime = info.ModTime()
}
// Provide the real filename to the client (to be used in Ctrl+S etc.)
quotedName := strings.ReplaceAll(fu.FileName, "\"", "\\\"")
w.Header().Set("Content-Disposition", fmt.Sprintf("inline; filename=\"%s\"", quotedName))
// We use http.ServeContent (instead of http.ServeFile) because we cannot
// use http.ServeFile together with the assertion that the file exists,
// without introducing a TOCTOU flaw.
http.ServeContent(w, r, fu.FileName, modtime, file)
}
func (rl *rushlink) viewPasteHandlerInnerMeta(w http.ResponseWriter, r *http.Request, p *db.Paste, fu *db.FileUpload) {
var cd canDelete
deleteToken := getDeleteTokenFromRequest(r)
if deleteToken != "" {
if subtle.ConstantTimeCompare([]byte(deleteToken), []byte(p.DeleteToken)) == 1 {
cd = canDeleteYes
} else {
cd = canDeleteNo
}
}
var fileExt string
if fu != nil {
fileExt = fu.Ext()
}
data := map[string]interface{}{
"Paste": p,
"FileExt": fileExt,
"CanDeleteString": cd.String(),
"CanDeleteBool": cd.Bool(),
}
var status int
if p.State == db.PasteStateDeleted {
status = http.StatusGone
} else {
status = http.StatusOK
}
rl.render(w, r, status, "pasteMeta", data)
}
func (rl *rushlink) viewActionSuccess(w http.ResponseWriter, r *http.Request, p *db.Paste, fu *db.FileUpload) {
var fileExt string
if fu != nil {
fileExt = fu.Ext()
}
// Redirect to the new paste.
pasteURL := url.URL{
Path: fmt.Sprintf("/%s%s/meta", p.Key, fileExt),
RawQuery: fmt.Sprintf("deleteToken=%s", url.QueryEscape(p.DeleteToken)),
}
http.Redirect(w, r, pasteURL.String(), http.StatusFound)
// But still render the page for CURL-like clients.
cd := canDeleteYes
data := map[string]interface{}{
"Paste": p,
"FileExt": fileExt,
"CanDeleteString": cd.String(),
"CanDeleteBool": cd.Bool(),
}
rl.render(w, r, 0, "pasteMeta", data)
}
func (rl *rushlink) newPasteHandler(w http.ResponseWriter, r *http.Request) {
if err := r.ParseMultipartForm(formParseMaxMemory); err != nil {
msg := fmt.Sprintf("could not parse form: %v\n", err)
rl.renderError(w, r, http.StatusBadRequest, msg)
return
}
fileHeaders, fileHeadersPrs := r.MultipartForm.File["file"]
shortens, shortensPrs := r.MultipartForm.Value["shorten"]
if !shortensPrs && !fileHeadersPrs {
rl.renderError(w, r, http.StatusBadRequest, "no 'file' and no 'shorten' fields given in form\n")
return
}
if shortensPrs && fileHeadersPrs {
rl.renderError(w, r, http.StatusBadRequest, "both 'file' and 'shorten' fields provided in form\n")
return
}
if shortensPrs {
rl.newRedirectPasteHandler(w, r, shortens[0])
return
}
if fileHeadersPrs {
fileHeader := fileHeaders[0]
file, err := fileHeader.Open()
if err != nil {
rl.renderInternalServerError(w, r, err)
return
}
file, fileHeader, err := r.FormFile("file")
if err == nil {
rl.newFileUploadPasteHandler(w, r, file, *fileHeader)
return
} else if err == http.ErrMissingFile {
// Fallthrough
} else {
msg := fmt.Sprintf("could not parse form: %v\n", err)
renderError(w, r, http.StatusBadRequest, msg)
return
}
shorten := r.FormValue("shorten")
if shorten != "" {
rl.newRedirectPasteHandler(w, r, shorten)
return
}
renderError(w, r, http.StatusBadRequest, "no 'file' and no 'shorten' fields given in form\n")
}
func (rl *rushlink) newFileUploadPasteHandler(w http.ResponseWriter, r *http.Request, file multipart.File, header multipart.FileHeader) {
var fu *db.FileUpload
var paste *db.Paste
if err := rl.db.Transaction(func(tx *db.Database) error {
if err := rl.db.Bolt.Update(func(tx *bolt.Tx) error {
var err error
fu, err = db.NewFileUpload(rl.fs, file, header.Filename)
// Create the fileUpload in the database
fu, err = db.NewFileUpload(rl.fs, file, header.Filename, header.Header.Get("Content-Type"))
if err != nil {
panic(errors.Wrap(err, "creating fileUpload"))
}
@ -290,39 +201,54 @@ func (rl *rushlink) newFileUploadPasteHandler(w http.ResponseWriter, r *http.Req
panic(errors.Wrap(err, "saving fileUpload in db"))
}
paste, err = shortenFileUploadID(tx, fu.PubID)
paste, err = shortenFileUploadID(tx, fu.ID)
return err
}); err != nil {
panic(err)
}
rl.viewActionSuccess(w, r, paste, fu)
data := map[string]interface{}{"Paste": paste}
render(w, r, "newFileUploadPasteSuccess", data)
}
func (rl *rushlink) newPasteHandlerURLEncoded(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
if err := r.ParseForm(); err != nil {
next(w, r)
return
}
shorten := r.PostFormValue("shorten")
if shorten == "" {
renderError(w, r, http.StatusBadRequest, "no 'shorten' param given\n")
return
}
rl.newRedirectPasteHandler(w, r, shorten)
}
func (rl *rushlink) newRedirectPasteHandler(w http.ResponseWriter, r *http.Request, rawurl string) {
userURL, err := url.Parse(rawurl)
userURL, err := url.ParseRequestURI(rawurl)
if err != nil {
msg := fmt.Sprintf("invalid url (%v): %v", err, rawurl)
rl.renderError(w, r, http.StatusBadRequest, msg)
renderError(w, r, http.StatusBadRequest, msg)
return
}
if userURL.Scheme == "" {
rl.renderError(w, r, http.StatusBadRequest, "invalid url (unspecified scheme)\n")
renderError(w, r, http.StatusBadRequest, "invalid url (unspecified scheme)\n")
return
}
if userURL.Host == "" {
rl.renderError(w, r, http.StatusBadRequest, "invalid url (unspecified host)\n")
renderError(w, r, http.StatusBadRequest, "invalid url (unspecified host)\n")
return
}
var paste *db.Paste
if err := rl.db.Transaction(func(tx *db.Database) error {
if err := rl.db.Bolt.Update(func(tx *bolt.Tx) error {
var err error
paste, err = shortenURL(tx, userURL)
return err
}); err != nil {
panic(err)
}
rl.viewActionSuccess(w, r, paste, nil)
data := map[string]interface{}{"Paste": paste}
render(w, r, "newRedirectPasteSuccess", data)
}
// Delete a URL from the database
@ -332,63 +258,61 @@ func (rl *rushlink) deletePasteHandler(w http.ResponseWriter, r *http.Request) {
deleteToken := getDeleteTokenFromRequest(r)
if deleteToken == "" {
rl.renderError(w, r, http.StatusBadRequest, "no delete token provided\n")
renderError(w, r, http.StatusBadRequest, "no delete token provided\n")
return
}
var errorCode int
var paste *db.Paste
if err := rl.db.Transaction(func(tx *db.Database) error {
var err error
paste, err = db.GetPaste(tx, key)
var paste db.Paste
if err := rl.db.Bolt.Update(func(tx *bolt.Tx) error {
p, err := db.GetPaste(tx, key)
if err != nil {
errorCode = http.StatusNotFound
return err
}
if paste.State == db.PasteStateDeleted {
if p.State == db.PasteStateDeleted {
errorCode = http.StatusGone
return errors.New("already deleted")
}
if subtle.ConstantTimeCompare([]byte(deleteToken), []byte(paste.DeleteToken)) == 0 {
if subtle.ConstantTimeCompare([]byte(deleteToken), []byte(p.DeleteToken)) == 0 {
errorCode = http.StatusForbidden
return errors.New("invalid delete token")
}
if err := paste.Delete(tx, rl.fs); err != nil {
if err := p.Delete(tx, rl.fs); err != nil {
errorCode = http.StatusInternalServerError
return err
}
paste = *p
return nil
}); err != nil {
log.Printf("error: %v\n", err)
rl.renderError(w, r, errorCode, fmt.Sprintf("error: %v\n", err))
renderError(w, r, errorCode, fmt.Sprintf("error: %v\n", err))
return
}
rl.viewActionSuccess(w, r, paste, nil)
data := map[string]interface{}{"Paste": paste}
render(w, r, "deletePasteSuccess", data)
}
// Add a new fileUpload redirect to the database
//
// Returns the new paste key if the fileUpload was successfully added to the
// database
func shortenFileUploadID(tx *db.Database, id uuid.UUID) (*db.Paste, error) {
func shortenFileUploadID(tx *bolt.Tx, id uuid.UUID) (*db.Paste, error) {
return shorten(tx, db.PasteTypeFileUpload, id[:])
}
// Add a new URL to the database
//
// Returns the new paste key if the url was successfully shortened
func shortenURL(tx *db.Database, userURL *url.URL) (*db.Paste, error) {
func shortenURL(tx *bolt.Tx, userURL *url.URL) (*db.Paste, error) {
return shorten(tx, db.PasteTypeRedirect, []byte(userURL.String()))
}
// Add a paste (of any kind) to the database with arbitrary content.
func shorten(tx *db.Database, ty db.PasteType, content []byte) (*db.Paste, error) {
func shorten(tx *bolt.Tx, ty db.PasteType, content []byte) (*db.Paste, error) {
// Generate the paste key
var keyEntropy int
if ty == db.PasteTypeFileUpload || ty == db.PasteTypePaste {
keyEntropy = highOnlineEntropy
}
pasteKey, err := db.GeneratePasteKey(tx, keyEntropy)
pasteKey, err := db.GeneratePasteKey(tx)
if err != nil {
return nil, errors.Wrap(err, "generating paste key")
}
@ -406,6 +330,7 @@ func shorten(tx *db.Database, ty db.PasteType, content []byte) (*db.Paste, error
Content: content,
Key: pasteKey,
DeleteToken: deleteToken,
TimeCreated: time.Now().UTC(),
}
if err := p.Save(tx); err != nil {
return nil, err

View File

@ -1,222 +0,0 @@
package rushlink
import (
"bytes"
"fmt"
"io/ioutil"
"mime/multipart"
"net/http"
"net/http/httptest"
"net/url"
"os"
"path/filepath"
"strings"
"testing"
"gitea.hashru.nl/dsprenkels/rushlink/internal/db"
"github.com/gorilla/mux"
)
// createTemporaryRouter initializes a rushlink instance, with temporary
// filestore and database.
//
// It will use testing.T.Cleanup to cleanup after itself.
func createTemporaryRouter(t *testing.T) (*mux.Router, *rushlink) {
tempDir, err := ioutil.TempDir("", "rushlink-tmp-*")
if err != nil {
t.Fatalf("creating temporary directory: %s\n", err)
}
t.Cleanup(func() {
os.RemoveAll(tempDir)
})
fileStore, err := db.OpenFileStore(filepath.Join(tempDir, "filestore"))
if err != nil {
t.Fatalf("opening temporary filestore: %s\n", err)
}
os.Setenv(db.EnvDatabaseDriver, "sqlite")
os.Setenv(db.EnvDatabasePath, "file::memory:?cache=shared")
database, err := db.OpenDBFromEnvironment()
if err != nil {
t.Fatalf("opening temporary database: %v\n", err)
}
database.Debug()
if err := db.Gormigrate(database).Migrate(); err != nil {
t.Fatalf("migration failed: %v\n", err)
}
// *.invalid. is guaranteed not to exist (RFC 6761).
rootURL, err := url.Parse("https://rushlink.invalid")
if err != nil {
t.Fatalf("parsing URL: %s\n", err)
}
rl := rushlink{
db: database,
fs: fileStore,
rootURL: rootURL,
}
r := mux.NewRouter()
InitMainRouter(r, &rl)
return r, &rl
}
// checkStatusCode checks whether the status code from a recorded response is equal
// to some response code.
func checkStatusCode(t *testing.T, rr *httptest.ResponseRecorder, code int) {
if actual := rr.Code; actual != code {
t.Logf("request body:\n%v\n", rr.Body.String())
t.Fatalf("handler returned wrong status code: got %v want %v\n",
actual, code)
}
}
// checkLocationHeader checks whether the status code from a recorded response is equal
// to some expected URL.
func checkLocationHeader(t *testing.T, rr *httptest.ResponseRecorder, expected string) {
location := rr.Header().Get("Location")
if location != expected {
t.Fatalf("handler returned bad redirect location: got %v want %v", location, expected)
}
}
func TestIssue43(t *testing.T) {
srv, _ := createTemporaryRouter(t)
// Put a URL with a fragment identifier into the database.
var body bytes.Buffer
form := multipart.NewWriter(&body)
form.WriteField("shorten", "https://example.com#fragment")
form.Close()
req, err := http.NewRequest("POST", "/", bytes.NewReader(body.Bytes()))
if err != nil {
t.Fatal(err)
}
req.Header.Add("Content-Type", form.FormDataContentType())
rr := httptest.NewRecorder()
srv.ServeHTTP(rr, req)
checkStatusCode(t, rr, http.StatusFound)
rawURL := strings.SplitN(rr.Body.String(), "\n", 2)[0]
pasteURL, err := url.Parse(rawURL)
if err != nil {
t.Fatal(err)
}
// Check if the URL was encoded correctly.
req, err = http.NewRequest("GET", pasteURL.Path, nil)
if err != nil {
t.Fatal(err)
}
req = mux.SetURLVars(req, map[string]string{"key": pasteURL.Path[1:]})
rr = httptest.NewRecorder()
srv.ServeHTTP(rr, req)
checkStatusCode(t, rr, http.StatusTemporaryRedirect)
checkLocationHeader(t, rr, "https://example.com#fragment")
}
func TestIssue53(t *testing.T) {
srv, rl := createTemporaryRouter(t)
// Put a URL with a fragment identifier into the database.
var body bytes.Buffer
form := multipart.NewWriter(&body)
if _, err := form.CreateFormFile("file", "../directory-traversal/file.txt"); err != nil {
t.Fatal(err)
}
form.Close()
req, err := http.NewRequest("POST", "/", bytes.NewReader(body.Bytes()))
if err != nil {
t.Fatal(err)
}
req.Header.Add("Content-Type", form.FormDataContentType())
rr := httptest.NewRecorder()
srv.ServeHTTP(rr, req)
checkStatusCode(t, rr, http.StatusFound)
// Check that any attempt to do directory traversal has failed.
rl.db.Transaction(func(tx *db.Database) error {
fus, err := db.AllFileUploads(tx)
if err != nil {
t.Fatal(err)
}
for _, fu := range fus {
if strings.ContainsAny(fu.FileName, "/\\") {
t.Fatalf(fmt.Sprintf("found a slash in file name: %v", fu.FileName))
}
}
return nil
})
}
func TestIssue60(t *testing.T) {
srv, _ := createTemporaryRouter(t)
// Request a nonexistent static file
req, err := http.NewRequest("GET", "/css/nonexistent_file.css", nil)
if err != nil {
t.Fatal(err)
}
rr := httptest.NewRecorder()
srv.ServeHTTP(rr, req)
checkStatusCode(t, rr, http.StatusNotFound)
}
func TestIssue56(t *testing.T) {
srv, _ := createTemporaryRouter(t)
// Make a POST request with both a 'file' *and* a 'shorten' part.
var body bytes.Buffer
form := multipart.NewWriter(&body)
if _, err := form.CreateFormFile("file", "empty.txt"); err != nil {
t.Fatal(err)
}
if _, err := form.CreateFormField("shorten"); err != nil {
t.Fatal(err)
}
form.Close()
req, err := http.NewRequest("POST", "/", bytes.NewReader(body.Bytes()))
if err != nil {
t.Fatal(err)
}
req.Header.Add("Content-Type", form.FormDataContentType())
rr := httptest.NewRecorder()
srv.ServeHTTP(rr, req)
checkStatusCode(t, rr, http.StatusBadRequest)
}
func TestIssue68(t *testing.T) {
srv, _ := createTemporaryRouter(t)
originalURL := "https://example.com"
var body bytes.Buffer
form := multipart.NewWriter(&body)
form.WriteField("shorten", "https://example.com")
form.Close()
req, err := http.NewRequest("POST", "/", bytes.NewReader(body.Bytes()))
if err != nil {
t.Fatal(err)
}
req.Header.Add("Content-Type", form.FormDataContentType())
rr := httptest.NewRecorder()
srv.ServeHTTP(rr, req)
checkStatusCode(t, rr, http.StatusFound)
rawURL := strings.SplitN(rr.Body.String(), "\n", 2)[0]
pasteURL, err := url.Parse(rawURL)
if err != nil {
t.Fatal(err)
}
// Check if the no-redirect handler works properly.
req, err = http.NewRequest("GET", pasteURL.Path+"/nr", nil)
if err != nil {
t.Fatal(err)
}
rr = httptest.NewRecorder()
srv.ServeHTTP(rr, req)
checkStatusCode(t, rr, http.StatusOK)
if rr.Body.String() != originalURL {
t.Errorf("incorrect URL = %v, want %v", rr.Body.String(), originalURL)
}
}

View File

@ -1,74 +1,147 @@
package db
import (
"fmt"
"log"
"os"
"time"
"github.com/pkg/errors"
"gorm.io/driver/postgres"
"gorm.io/driver/sqlite"
"gorm.io/gorm"
"gorm.io/gorm/logger"
)
const (
// EnvDatabaseDriver is the key for the 'database driver' environment variable.
EnvDatabaseDriver = "RUSHLINK_DATABASE_DRIVER"
// EnvDatabasePath is the key for the 'database path' environment variable.
EnvDatabasePath = "RUSHLINK_DATABASE_PATH"
// EnvPostgresURL is the key for the 'postgresql URL' environment variable.
EnvPostgresURL = "RUSHLINK_POSTGRES_URL"
// EnvFileStorePath is the key for the environment variable locating the file store.
EnvFileStorePath = "RUSHLINK_FILE_STORE_PATH"
bolt "go.etcd.io/bbolt"
gobmarsh "gitea.hashru.nl/dsprenkels/rushlink/pkg/gobmarsh"
)
// Database is the main rushlink database type.
//
// Open a database using OpenDBFromEnvironment(). Closing is not necessary.
// Open a database using DB.Open() and close it in the end using DB.Close().
// Only one instance of DB should exist in a program at any moment.
type Database = gorm.DB
var (
gormLogger logger.Interface = logger.New(log.New(os.Stdout, "\r\n", log.LstdFlags), logger.Config{
SlowThreshold: 50 * time.Millisecond,
LogLevel: logger.Warn,
Colorful: true,
})
gormConfig = gorm.Config{Logger: gormLogger, PrepareStmt: true}
)
// OpenDBFromEnvironment tries to open an SQL database, described by
func OpenDBFromEnvironment() (*Database, error) {
const envNotSetMsg = "%v environment variable is not set"
driver, prs := os.LookupEnv(EnvDatabaseDriver)
if !prs {
return nil, errors.Errorf(envNotSetMsg, EnvDatabaseDriver)
type Database struct {
Bolt *bolt.DB
}
switch driver {
case "sqlite":
path, prs := os.LookupEnv(EnvDatabasePath)
if !prs {
return nil, errors.Errorf(envNotSetMsg, EnvDatabasePath)
// CurrentMigrateVersion holds the current "migrate version".
//
// If we alter the database format, we bump this number and write a new
// database migration in migrate().
const CurrentMigrateVersion = 2
// BucketConf holds the name for the "configuration" bucket.
//
// This bucket holds the database version, secret site-wide keys, etc.
const BucketConf = "conf"
// BucketPastes holds the name for the pastes bucket.
const BucketPastes = "pastes"
// BucketFileUpload holds the name for the file-upload bucket.
const BucketFileUpload = "fileUpload"
// KeyMigrateVersion stores the current migration version. If this value is less than
// CurrentMigrateVersion, the database has to be migrated.
const KeyMigrateVersion = "migrate_version"
// OpenDB opens a database file located at path.
func OpenDB(path string) (*Database, error) {
if path == "" {
return nil, errors.New("database not set")
}
db, err := gorm.Open(sqlite.Open(path), &gormConfig)
db, err := bolt.Open(path, 0666, &bolt.Options{Timeout: 1 * time.Second})
if err != nil {
return nil, errors.Wrapf(err, "failed to open database at '%v'", path)
}
if err := db.Update(migrate); err != nil {
return nil, err
}
return db, nil
case "postgres":
dsn, prs := os.LookupEnv(EnvPostgresURL)
if !prs {
return nil, errors.Errorf(envNotSetMsg, EnvPostgresURL)
return &Database{db}, nil
}
db, err := gorm.Open(postgres.Open(dsn), &gormConfig)
// Close the bolt database
func (db *Database) Close() error {
if db == nil {
panic("no open database")
}
return db.Close()
}
// Initialize and migrate the database to the current version
func migrate(tx *bolt.Tx) error {
dbVersion, err := dbVersion(tx)
if err != nil {
return nil, err
return err
}
return db, nil
default:
return nil, errors.Errorf("RUSHLINK_DATABASE_DRIVER should be either 'sqlite' or 'postgres' (not '%v'), "+
"for more info see <https://stackoverflow.com/q/3582552/5207081>", driver)
// Migrate the database to version 1
if dbVersion < 1 {
log.Println("migrating database to version 1")
// Create conf bucket
_, err := tx.CreateBucket([]byte(BucketConf))
if err != nil {
return err
}
// Create paste bucket
_, err = tx.CreateBucket([]byte(BucketPastes))
if err != nil {
return err
}
// Update the version number
if err := setDBVersion(tx, 1); err != nil {
return err
}
}
if dbVersion < 2 {
log.Println("migrating database to version 2")
// Create fileUpload bucket
_, err := tx.CreateBucket([]byte(BucketFileUpload))
if err != nil {
return err
}
// Update the version number
if err := setDBVersion(tx, 2); err != nil {
return err
}
}
return nil
}
// Get the current migrate version from the database
func dbVersion(tx *bolt.Tx) (int, error) {
conf := tx.Bucket([]byte(BucketConf))
if conf == nil {
return 0, nil
}
dbVersionBytes := conf.Get([]byte(KeyMigrateVersion))
if dbVersionBytes == nil {
return 0, nil
}
// Version was already stored
var dbVersion int
if err := gobmarsh.Unmarshal(dbVersionBytes, &dbVersion); err != nil {
return 0, err
}
if dbVersion == 0 {
return 0, fmt.Errorf("database version is invalid (%v)", dbVersion)
}
if dbVersion > CurrentMigrateVersion {
return 0, fmt.Errorf("database version is too recent (%v > %v)", dbVersion, CurrentMigrateVersion)
}
return dbVersion, nil
}
// Update the current migrate version in the database
func setDBVersion(tx *bolt.Tx, version int) error {
conf, err := tx.CreateBucketIfNotExists([]byte(BucketConf))
if err != nil {
return err
}
versionBytes, err := gobmarsh.Marshal(version)
if err != nil {
return err
}
return conf.Put([]byte(KeyMigrateVersion), versionBytes)
}

View File

@ -1,20 +1,18 @@
package db
import (
"bytes"
"encoding/hex"
"hash/crc32"
"io"
"net/http"
"net/url"
"os"
"path"
"path/filepath"
"time"
"github.com/google/uuid"
"github.com/pkg/errors"
"gorm.io/gorm"
bolt "go.etcd.io/bbolt"
gobmarsh "gitea.hashru.nl/dsprenkels/rushlink/pkg/gobmarsh"
)
// Use the Castagnoli checksum because of the acceleration on Intel CPUs
@ -30,29 +28,11 @@ type FileUploadState int
// FileUpload models an uploaded file.
type FileUpload struct {
ID uint `gorm:"primaryKey"`
// State of the FileUpload (present/deleted/etc).
State FileUploadState `gorm:"index"`
// UUID publically identifies this FileUpload.
PubID uuid.UUID `gorm:"uniqueIndex"`
// FileName contains the original filename of this FileUpload.
State FileUploadState
ID uuid.UUID
FileName string
// Content type as determined by http.DetectContentType.
ContentType string
// Checksum holds a crc32c checksum of the file.
//
// This checksum is only meant to allow for the detection of random
// database corruption.
Checksum uint32
CreatedAt time.Time
UpdatedAt time.Time
DeletedAt gorm.DeletedAt
}
const (
@ -82,19 +62,6 @@ func (t FileUploadState) String() string {
}
}
// ErrFileUploadDoesNotExist occurs when a key does not exist in the database.
var ErrFileUploadDoesNotExist = errors.New("file not found in the database")
// OpenFileStoreFromEnvironment tries to open a file store located at ${RUSHLINK_FILE_STORE_PATH}.
func OpenFileStoreFromEnvironment() (*FileStore, error) {
path, prs := os.LookupEnv(EnvFileStorePath)
if !prs {
err := errors.Errorf("%v environment variable is not set", EnvFileStorePath)
return nil, errors.Wrap(err, "opening file store")
}
return OpenFileStore(path)
}
// OpenFileStore opens the file storage at path.
func OpenFileStore(path string) (*FileStore, error) {
if path == "" {
@ -109,43 +76,14 @@ func OpenFileStore(path string) (*FileStore, error) {
return &FileStore{path[:]}, nil
}
// Path returns the path of the FileStore root.
func (fs *FileStore) Path() string {
return fs.path
}
// filePath resolves the path of a file in the FileStore given some id and filename.
func (fs *FileStore) filePath(pubID uuid.UUID, fileName string) string {
if fs.path == "" {
panic("fileStoreDir called while the file store path has not been set")
}
return path.Join(fs.path, hex.EncodeToString(pubID[:]), fileName)
}
// NewFileUpload creates a new FileUpload object.
//
// Internally, this function detects the type of the file stored in `r` using
// `http.DetectContentType`.
func NewFileUpload(fs *FileStore, r io.Reader, fileName string) (*FileUpload, error) {
// Generate a file ID
pubID, err := uuid.NewRandom()
func NewFileUpload(fs *FileStore, r io.Reader, fileName string, contentType string) (*FileUpload, error) {
id, err := uuid.NewRandom()
if err != nil {
return nil, errors.Wrap(err, "generating UUID")
}
// Construct a checksum for this file
hash := crc32.New(checksumTable)
tee := io.TeeReader(r, hash)
// Detect the file type
var tmpBuf bytes.Buffer
tmpBuf.Grow(512)
io.CopyN(&tmpBuf, tee, 512)
contentType := http.DetectContentType(tmpBuf.Bytes())
// Open the file on disk for writing
baseName := filepath.Base(fileName)
filePath := fs.filePath(pubID, baseName)
filePath := fs.FilePath(id, fileName)
if err := os.Mkdir(path.Dir(filePath), dirMode); err != nil {
return nil, errors.Wrap(err, "creating file dir")
}
@ -155,11 +93,8 @@ func NewFileUpload(fs *FileStore, r io.Reader, fileName string) (*FileUpload, er
}
defer file.Close()
// Write the file to disk
_, err = io.Copy(file, &tmpBuf)
if err != nil {
return nil, errors.Wrap(err, "writing to file")
}
hash := crc32.New(checksumTable)
tee := io.TeeReader(r, hash)
_, err = io.Copy(file, tee)
if err != nil {
return nil, errors.Wrap(err, "writing to file")
@ -167,50 +102,69 @@ func NewFileUpload(fs *FileStore, r io.Reader, fileName string) (*FileUpload, er
fu := &FileUpload{
State: FileUploadStatePresent,
PubID: pubID,
FileName: baseName,
ID: id,
FileName: fileName,
ContentType: contentType,
Checksum: hash.Sum32(),
}
return fu, nil
}
// GetFileUpload tries to retrieve a FileUpload object from the bolt database.
func GetFileUpload(db *gorm.DB, pubID uuid.UUID) (*FileUpload, error) {
var fus []FileUpload
if err := db.Unscoped().Limit(1).Where("pub_id = ?", pubID).Find(&fus).Error; err != nil {
return nil, err
}
if len(fus) == 0 {
return nil, ErrFileUploadDoesNotExist
}
return &fus[0], nil
func (fs *FileStore) Path() string {
return fs.path
}
// AllFileUploads tries to retrieve all FileUpload objects from the bolt database.
func AllFileUploads(db *gorm.DB) ([]FileUpload, error) {
var fus []FileUpload
if err := db.Find(&fus).Error; err != nil {
return nil, err
func (fs *FileStore) FilePath(id uuid.UUID, fileName string) string {
if fs.path == "" {
panic("fileStoreDir called while the file store path has not been set")
}
return fus, nil
return path.Join(fs.path, hex.EncodeToString(id[:]), fileName)
}
func GetFileUpload(tx *bolt.Tx, id uuid.UUID) (*FileUpload, error) {
bucket := tx.Bucket([]byte(BucketFileUpload))
if bucket == nil {
return nil, errors.Errorf("bucket %v does not exist", BucketFileUpload)
}
storedBytes := bucket.Get(id[:])
if storedBytes == nil {
return nil, nil
}
fu := &FileUpload{}
err := gobmarsh.Unmarshal(storedBytes, fu)
return fu, err
}
// Save saves a FileUpload in the database.
func (fu *FileUpload) Save(db *gorm.DB) error {
return db.Save(fu).Error
func (fu *FileUpload) Save(tx *bolt.Tx) error {
bucket := tx.Bucket([]byte(BucketFileUpload))
if bucket == nil {
return errors.Errorf("bucket %v does not exist", BucketFileUpload)
}
buf, err := gobmarsh.Marshal(fu)
if err != nil {
return errors.Wrap(err, "encoding for database failed")
}
if err := bucket.Put(fu.ID[:], buf); err != nil {
return errors.Wrap(err, "database transaction failed")
}
return nil
}
// Delete deletes a FileUpload from the database.
func (fu *FileUpload) Delete(db *gorm.DB, fs *FileStore) error {
func (fu *FileUpload) Delete(tx *bolt.Tx, fs *FileStore) error {
// Remove the file in the backend
filePath := fu.Path(fs)
filePath := fs.FilePath(fu.ID, fu.FileName)
if err := os.Remove(filePath); err != nil {
return err
}
// Update the file in the server
if err := db.Delete(fu).Error; err != nil {
if err := (&FileUpload{
ID: fu.ID,
State: FileUploadStateDeleted,
}).Save(tx); err != nil {
return err
}
@ -219,22 +173,12 @@ func (fu *FileUpload) Delete(db *gorm.DB, fs *FileStore) error {
return errors.Wrap(os.Remove(path.Dir(filePath)), wrap)
}
// Path returns the path to this FileUpload in the FileStore provided in fs.
func (fu *FileUpload) Path(fs *FileStore) string {
return fs.filePath(fu.PubID, fu.FileName)
}
// URL returns the URL for the FileUpload.
func (fu *FileUpload) URL() *url.URL {
rawurl := "/uploads/" + hex.EncodeToString(fu.PubID[:]) + "/" + fu.FileName
rawurl := "/uploads/" + hex.EncodeToString(fu.ID[:]) + "/" + fu.FileName
urlParse, err := url.Parse(rawurl)
if err != nil {
panic("could not construct /uploads/ url")
}
return urlParse
}
// Ext returns the extension of the file attached to this FileUpload.
func (fu *FileUpload) Ext() string {
return filepath.Ext(fu.FileName)
}

View File

@ -1,46 +0,0 @@
package db
import (
"time"
gormigrate "github.com/go-gormigrate/gormigrate/v2"
"github.com/google/uuid"
"gorm.io/gorm"
)
// Gormigrate returns a Gormigrate migrator for the database.
func Gormigrate(db *gorm.DB) *gormigrate.Gormigrate {
return gormigrate.New(db, gormigrate.DefaultOptions, []*gormigrate.Migration{
{
ID: "202010251337",
Migrate: func(tx *gorm.DB) error {
type FileUpload struct {
ID uint `gorm:"primaryKey"`
State FileUploadState `gorm:"index"`
PubID uuid.UUID `gorm:"uniqueIndex"`
FileName string
ContentType string
Checksum uint32
CreatedAt time.Time
UpdatedAt time.Time
DeletedAt gorm.DeletedAt
}
type Paste struct {
ID uint `gorm:"primaryKey"`
Type PasteType `gorm:"index"`
State PasteState `gorm:"index"`
Content []byte
Key string `gorm:"uniqueIndex"`
DeleteToken string
CreatedAt time.Time
UpdatedAt time.Time
DeletedAt gorm.DeletedAt
}
return tx.AutoMigrate(&FileUpload{}, &Paste{})
},
Rollback: func(tx *gorm.DB) error {
return tx.Migrator().DropTable(&FileUpload{}, &Paste{})
},
},
})
}

View File

@ -2,37 +2,31 @@ package db
import (
"crypto/rand"
"encoding/base64"
"encoding/hex"
"net/http"
"net/url"
"strings"
"time"
gobmarsh "gitea.hashru.nl/dsprenkels/rushlink/pkg/gobmarsh"
"github.com/google/uuid"
"github.com/pkg/errors"
"gorm.io/gorm"
bolt "go.etcd.io/bbolt"
)
// PasteType describes the type of Paste (i.e. file, redirect, [...]).
type PasteType int
// PasteState describes the state of a Paste (i.e. present, deleted, [...]).
type PasteState int
// Paste describes the main Paste model in the database.
type Paste struct {
ID uint `gorm:"primaryKey"`
Type PasteType `gorm:"index"`
State PasteState `gorm:"index"`
Type PasteType
State PasteState
Content []byte
Key string `gorm:"uniqueIndex"`
Key string
DeleteToken string
CreatedAt time.Time
UpdatedAt time.Time
DeletedAt gorm.DeletedAt
TimeCreated time.Time
}
// ReservedPasteKeys keys are designated reserved, and will not be randomly chosen.
// ReservedPasteKeys keys are designated reserved, and will not be randomly chosen
var ReservedPasteKeys = []string{"xd42", "example"}
// Note: we use iota here. That means removals of PasteType* are not allowed,
@ -41,8 +35,6 @@ var ReservedPasteKeys = []string{"xd42", "example"}
// allowed at the bottom of this block, for the same reason.
const (
PasteTypeUndef PasteType = iota
// PasteTypePaste is as of yet unused. It is still unclear if this type
// will ever get a proper meaning.
PasteTypePaste
PasteTypeRedirect
PasteTypeFileUpload
@ -55,33 +47,9 @@ const (
PasteStateDeleted
)
// minKeyLen specifies the mimimum length of a paste key.
const minKeyLen = 4
var (
// ErrKeyInvalidChar occurs when a key contains an invalid character.
ErrKeyInvalidChar = errors.New("invalid character in key")
// ErrKeyInvalidLength occurs when a key embeds a length that is incorrect.
ErrKeyInvalidLength = errors.New("key length encoding is incorrect")
// ErrPasteDoesNotExist occurs when a key does not exist in the database.
ErrPasteDoesNotExist = errors.New("url key not found in the database")
)
// ErrHTTPStatusCode returns the HTTP status code that should correspond to
// the provided error.
// server error, or false if it is not.
func ErrHTTPStatusCode(err error) int {
switch err {
case nil:
return 0
case gorm.ErrRecordNotFound, ErrKeyInvalidChar, ErrKeyInvalidLength, ErrPasteDoesNotExist:
return http.StatusNotFound
}
return http.StatusInternalServerError
}
// Base64 encoding and decoding
var base64Alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
var base64Encoder = base64.RawURLEncoding.WithPadding(base64.NoPadding)
func (t PasteType) String() string {
switch t {
@ -112,80 +80,57 @@ func (t PasteState) String() string {
}
// GetPaste retrieves a paste from the database.
func GetPaste(db *gorm.DB, key string) (*Paste, error) {
if err := ValidatePasteKey(key); err != nil {
return nil, err
func GetPaste(tx *bolt.Tx, key string) (*Paste, error) {
pastesBucket := tx.Bucket([]byte(BucketPastes))
if pastesBucket == nil {
return nil, errors.Errorf("bucket %v does not exist", BucketPastes)
}
return GetPasteNoValidate(db, key)
storedBytes := pastesBucket.Get([]byte(key))
if storedBytes == nil {
return nil, nil
}
p := &Paste{}
err := gobmarsh.Unmarshal(storedBytes, p)
return p, err
}
// ValidatePasteKey validates the format of the key that has
func ValidatePasteKey(key string) error {
internalLen := minKeyLen
countingOnes := true
for _, ch := range key {
limb := strings.IndexRune(base64Alphabet, ch)
if limb == -1 {
return ErrKeyInvalidChar
func (p *Paste) Save(tx *bolt.Tx) error {
bucket := tx.Bucket([]byte(BucketPastes))
if bucket == nil {
return errors.Errorf("bucket %v does not exist", BucketPastes)
}
for i := 5; i >= 0 && countingOnes; i-- {
if (limb>>uint(i))&0x1 == 0 {
countingOnes = false
break
buf, err := gobmarsh.Marshal(p)
if err != nil {
return errors.Wrap(err, "encoding for database failed")
}
internalLen++
}
}
if internalLen != len(key) {
return ErrKeyInvalidLength
if err := bucket.Put([]byte(p.Key), buf); err != nil {
return errors.Wrap(err, "database transaction failed")
}
return nil
}
// GetPasteNoValidate retrieves a paste from the database without validating
// the key format first.
func GetPasteNoValidate(db *gorm.DB, key string) (*Paste, error) {
var ps []Paste
if err := db.Unscoped().Limit(1).Where("key = ?", key).Find(&ps).Error; err != nil {
return nil, err
}
if len(ps) == 0 {
return nil, ErrPasteDoesNotExist
}
return &ps[0], nil
}
// Save saves this Paste to the database.
func (p *Paste) Save(db *gorm.DB) error {
return db.Save(p).Error
}
// Delete deletes this Paste from the database.
func (p *Paste) Delete(db *gorm.DB, fs *FileStore) error {
func (p *Paste) Delete(tx *bolt.Tx, fs *FileStore) error {
// Remove the (maybe) attached file
if p.Type == PasteTypeFileUpload {
fuID, err := uuid.FromBytes(p.Content)
if err != nil {
return errors.Wrap(err, "failed to parse uuid")
}
fu, err := GetFileUpload(db, fuID)
fu, err := GetFileUpload(tx, fuID)
if err != nil {
return errors.Wrap(err, "failed to find file in database")
}
if err := fu.Delete(db, fs); err != nil {
if err := fu.Delete(tx, fs); err != nil {
return errors.Wrap(err, "failed to remove file")
}
}
// Wipe the old paste
// Replace the old paste with a new empty paste
p.Type = PasteTypeUndef
p.State = PasteStateDeleted
p.Content = []byte{}
if err := db.Save(&p).Error; err != nil {
return errors.Wrap(err, "failed to wipe paste in database")
}
// Soft-delete the paste as well
if err := db.Delete(&p).Error; err != nil {
if err := p.Save(tx); err != nil {
return errors.Wrap(err, "failed to delete paste in database")
}
return nil
@ -207,28 +152,28 @@ func (p *Paste) RedirectURL() *url.URL {
return urlParse
}
// GeneratePasteKey generates a new paste key. It will ensure that the newly
// generated paste key does not already exist in the database.
// The running time of this function is in O(log N), where N is the amount of
// GeneratePasteKey generates a key until it is not in the database, the
// running time of this function is in O(log N), where N is the amount of
// keys stored in the url-shorten database.
// In tx, a Bolt transaction is given. Use minimumEntropy to set the mimimum
// guessing entropy of the generated key.
func GeneratePasteKey(db *gorm.DB, minimumEntropy int) (string, error) {
func GeneratePasteKey(tx *bolt.Tx) (string, error) {
pastesBucket := tx.Bucket([]byte(BucketPastes))
if pastesBucket == nil {
return "", errors.Errorf("bucket %v does not exist", BucketPastes)
}
epoch := 0
var key string
for {
var err error
key, err = generatePasteKeyInner(epoch, minimumEntropy)
key, err = generatePasteKeyInner(epoch)
if err != nil {
return "", errors.Wrap(err, "url-key generation failed")
}
var count int64
db.Unscoped().Model(&Paste{}).Where("key = ?", []byte(key)).Count(&count)
if err != nil {
return "", errors.Wrap(err, "failed to check if key already exists")
found := pastesBucket.Get([]byte(key))
if found == nil {
break
}
alreadyInUse := count != 0
isReserved := false
for _, reservedKey := range ReservedPasteKeys {
@ -237,30 +182,17 @@ func GeneratePasteKey(db *gorm.DB, minimumEntropy int) (string, error) {
break
}
}
if !alreadyInUse && !isReserved {
if !isReserved {
break
}
epoch++
}
return key, nil
}
// generatePasteKeyInner generates a new paste key, but leaves the
// uniqueness and is-reserved checks to the caller. That is, it only
// generates a random key in the correct (syntactical) format.
// Both epoch and entropy can be used to set the key length. Epoch is used
// to prevent collisions in retrying to generate new keys. Entropy (in bits)
// is used to ensure that a new key has at least some amount of guessing
// entropy.
func generatePasteKeyInner(epoch, entropy int) (string, error) {
entropyEpoch := entropy
entropyEpoch -= minKeyLen * 6 // First 4 characters provide 24 bits.
entropyEpoch++ // One bit less because of '0' bit.
entropyEpoch = (entropyEpoch-1)/5 + 1 // 5 bits for every added epoch.
if epoch < entropyEpoch {
epoch = entropyEpoch
}
urlKey := make([]byte, minKeyLen+epoch)
func generatePasteKeyInner(epoch int) (string, error) {
urlKey := make([]byte, 4+epoch)
_, err := rand.Read(urlKey)
if err != nil {
return "", err
@ -294,7 +226,6 @@ func generatePasteKeyInner(epoch, entropy int) (string, error) {
return string(urlKey), nil
}
// GenerateDeleteToken generates a new (random) delete token.
func GenerateDeleteToken() (string, error) {
var deleteToken [16]byte
_, err := rand.Read(deleteToken[:])

View File

@ -1,100 +0,0 @@
package db
import (
"testing"
"testing/quick"
"gorm.io/driver/sqlite"
"gorm.io/gorm"
)
func OpenTemporaryDB() (*Database, error) {
db, err := gorm.Open(sqlite.Open(":memory:"), &gormConfig)
if err != nil {
return nil, err
}
migrate := Gormigrate(db)
if err := migrate.Migrate(); err != nil {
return nil, err
}
return db, nil
}
func TestValidatePasteKey(t *testing.T) {
tests := []struct {
key string
wantErr bool
errKind error
}{
{"xd42__", false, nil},
{"xd42_*", true, ErrKeyInvalidChar},
{"xd42_/", true, ErrKeyInvalidChar},
{"xd42_=", true, ErrKeyInvalidChar},
{"xd42_", true, ErrKeyInvalidLength},
{"xd42", true, ErrKeyInvalidLength},
{"xd4", true, ErrKeyInvalidLength},
{"xd", true, ErrKeyInvalidLength},
{"x", true, ErrKeyInvalidLength},
{"", true, ErrKeyInvalidLength},
{"KoJ5", false, nil},
{"__dGSJIIbBpr-SD0", false, nil},
{"__dGSJIIbBpr-SD", true, ErrKeyInvalidLength},
}
for _, tt := range tests {
t.Run(tt.key, func(t *testing.T) {
err := ValidatePasteKey(tt.key)
if (err != nil) != tt.wantErr {
t.Errorf("ValidatePasteKey() got error = %v, want error %v", err != nil, tt.wantErr)
}
if (err != nil) && err != tt.errKind {
t.Errorf("ValidatePasteKey() error = %v, want errKind %v", err, tt.errKind)
}
})
}
}
func TestGeneratedKeysAreValid(t *testing.T) {
db, err := OpenTemporaryDB()
if err != nil {
t.Error(err)
}
var minimumEntropy int
checkGeneratedKeyValid := func() bool {
key, err := GeneratePasteKey(db, minimumEntropy)
if err != nil {
return false
}
return ValidatePasteKey(key) == nil
}
for minimumEntropy = 0; minimumEntropy <= 80; minimumEntropy++ {
if err = quick.Check(checkGeneratedKeyValid, nil); err != nil {
t.Error(err)
}
}
}
func TestTruncatedKeysAreInvalid(t *testing.T) {
db, err := OpenTemporaryDB()
if err != nil {
t.Error(err)
}
var minimumEntropy int
checkTruncatedKeysInvalid := func(truncRand uint) bool {
key, err := GeneratePasteKey(db, minimumEntropy)
if err != nil {
return false
}
trunc := int(truncRand % uint(len(key)-1))
key = key[:trunc]
return ValidatePasteKey(key) == ErrKeyInvalidLength
}
for minimumEntropy = 0; minimumEntropy <= 80; minimumEntropy++ {
if err = quick.Check(checkTruncatedKeysInvalid, nil); err != nil {
t.Error(err)
}
}
}

View File

@ -6,67 +6,41 @@ import (
"time"
"gitea.hashru.nl/dsprenkels/rushlink/internal/db"
"github.com/gorilla/mux"
"github.com/pkg/errors"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
"github.com/prometheus/client_golang/prometheus/promhttp"
bolt "go.etcd.io/bbolt"
)
const metricNamespace = "rushlink"
// metricURLsTotalGauge counts the number of requests that are handled by
// the application, partitioned by status code and HTTP method.
//
// This counter is updated by the router.
var metricRequestsTotalCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: metricNamespace,
Subsystem: "http",
Name: "requests_total",
Help: "How many HTTP requests processed, partitioned by status code and HTTP method.",
}, []string{"code", "method"})
// metricRequestsLatencyNanoSeconds keeps track of the request latencies for
// each http request.
//
// This historogram is updated by the router.
var metricRequestsLatencyNanoSeconds = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: metricNamespace,
Subsystem: "http",
Name: "request_duration_seconds",
Buckets: []float64{
float64(500e-6),
float64(1e-3),
float64(2e-3),
float64(5e-3),
float64(10e-3),
float64(20e-3),
float64(50e-3),
},
Help: "The latency of each HTTP request, partitioned by status code and HTTP method.",
}, []string{"code", "method"})
// metricURLsTotalGauge measures the amount of pastes stored in the database,
// partitioned by type and state.
//
// Its values are computed on the fly by updateMetrics().
var metricURLsTotalGauge = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: metricNamespace,
func StartMetricsServer(addr string, db *db.Database) {
var (
_ = promauto.NewGaugeFunc(prometheus.GaugeOpts{
Namespace: "rushlink",
Subsystem: "pastes",
Name: "urls_total",
Help: "The current amount of pastes in the database, partitioned by state and type.",
}, []string{"state", "type"})
// StartMetricsServer starts sering Prometheus metrics exports on addr
func StartMetricsServer(addr string, database *db.Database, fs *db.FileStore) {
prometheus.MustRegister(metricRequestsTotalCounter)
prometheus.MustRegister(metricRequestsLatencyNanoSeconds)
prometheus.MustRegister(metricURLsTotalGauge)
Help: "The current amount of pastes in the database.",
}, func() float64 {
var metric float64
if err := db.Bolt.View(func(tx *bolt.Tx) error {
bucket := tx.Bucket([]byte("pastes"))
if bucket == nil {
return errors.New("bucket 'pastes' could not be found")
}
metric = float64(bucket.Stats().KeyN)
return nil
}); err != nil {
log.Printf("error: %v", errors.Wrap(err, "fetching pastes_total metric"))
return 0
}
return metric
})
)
router := mux.NewRouter()
router.Handle("/metrics", &MetricsHandler{database}).Methods("GET")
router.Handle("/metrics", promhttp.Handler()).Methods("GET")
srv := &http.Server{
Handler: router,
Addr: addr,
@ -75,34 +49,3 @@ func StartMetricsServer(addr string, database *db.Database, fs *db.FileStore) {
}
log.Fatal(srv.ListenAndServe())
}
type MetricsHandler struct {
db *db.Database
}
func (mh *MetricsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
mh.updateMetrics()
promhttp.Handler().ServeHTTP(w, r)
}
func (mh *MetricsHandler) updateMetrics() {
// Update metricURLsTotalGauge
results := make([](struct {
Type db.PasteType
State db.PasteState
Count float64
}), 0)
query := mh.db.Unscoped().Model(&db.Paste{}).Select("type", "state", "COUNT(*) as count").Group("type, state").Find(&results)
if err := query.Error; err != nil {
log.Printf("error: %v", errors.Wrap(err, "fetching pastes_total metric"))
return
}
metricURLsTotalGauge.Reset()
for _, r := range results {
labels := map[string]string{
"type": r.Type.String(),
"state": r.State.String(),
}
metricURLsTotalGauge.With(labels).Set(r.Count)
}
}

110
router.go
View File

@ -4,140 +4,56 @@ import (
"fmt"
"log"
"net/http"
"net/url"
"runtime/debug"
"strconv"
"time"
"gitea.hashru.nl/dsprenkels/rushlink/internal/db"
"github.com/gorilla/mux"
"github.com/pkg/errors"
)
const staticFilenameExpr = "[A-Za-z0-9-_.]+"
const urlKeyExpr = "{key:[A-Za-z0-9-_]{4,}}"
const urlKeyWithExtExpr = urlKeyExpr + "{ext:\\.[A-Za-z0-9-_]+}"
type rushlink struct {
db *db.Database
fs *db.FileStore
rootURL *url.URL
}
func (rl *rushlink) RootURL() *url.URL {
return rl.rootURL
}
func (rl *rushlink) recoveryMiddleware(next http.Handler) http.Handler {
func recoveryMiddleware(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
logRequestInfo := func() {
log.Printf("in request: %v - %v %q %v", r.RemoteAddr, r.Method, r.RequestURI, r.Proto)
}
defer func() {
defer func() {
if err := recover(); err != nil {
w.WriteHeader(500)
log.Printf("error: panic while recovering from another panic: %v\n", err)
logRequestInfo()
debug.PrintStack()
fmt.Fprintf(w, "internal server error: %v\n", err)
}
}()
if err := recover(); err != nil {
w.WriteHeader(500)
log.Printf("error: %v\n", err)
logRequestInfo()
debug.PrintStack()
rl.renderInternalServerError(w, r, err)
renderInternalServerError(w, r, err)
}
}()
next.ServeHTTP(w, r)
})
}
func (rl *rushlink) metricsMiddleware(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
tick := time.Now()
srw := statusResponseWriter{Inner: w}
next.ServeHTTP(&srw, r)
tock := time.Now()
status := strconv.Itoa(srw.StatusCode)
labels := map[string]string{"code": status, "method": r.Method}
// Update requests counter metric
metricRequestsTotalCounter.With(labels).Inc()
// Update request latency metric
elapsed := tock.Sub(tick)
metricRequestsLatencyNanoSeconds.With(labels).Observe(elapsed.Seconds())
})
}
type statusResponseWriter struct {
Inner http.ResponseWriter
StatusCode int
}
func (w *statusResponseWriter) Header() http.Header {
return w.Inner.Header()
}
func (w *statusResponseWriter) Write(buf []byte) (int, error) {
if w.StatusCode == 0 {
w.WriteHeader(http.StatusOK)
}
return w.Inner.Write(buf)
}
func (w *statusResponseWriter) WriteHeader(statusCode int) {
w.StatusCode = statusCode
w.Inner.WriteHeader(statusCode)
}
// InitMainRouter creates the main Gorilla router for the application.
//
// This function will not populate the router with an error-recovery and
// metrics-reporting middleware. If these middleware are required, then the
// caller should encapsulate this router inside of another router and register
// the middlewares on the encapsulating router.
func InitMainRouter(r *mux.Router, rl *rushlink) {
r.HandleFunc("/{path:img/"+staticFilenameExpr+"}", rl.staticGetHandler).Methods("GET", "HEAD")
r.HandleFunc("/{path:css/"+staticFilenameExpr+"}", rl.staticGetHandler).Methods("GET", "HEAD")
r.HandleFunc("/{path:js/"+staticFilenameExpr+"}", rl.staticGetHandler).Methods("GET", "HEAD")
r.HandleFunc("/", rl.indexGetHandler).Methods("GET", "HEAD")
r.HandleFunc("/", rl.newPasteHandler).Methods("POST")
r.HandleFunc("/"+urlKeyExpr, rl.viewPasteHandler).Methods("GET", "HEAD")
r.HandleFunc("/"+urlKeyWithExtExpr, rl.viewPasteHandler).Methods("GET", "HEAD")
r.HandleFunc("/"+urlKeyExpr+"/nr", rl.viewPasteHandlerNoRedirect).Methods("GET", "HEAD")
r.HandleFunc("/"+urlKeyWithExtExpr+"/nr", rl.viewPasteHandlerNoRedirect).Methods("GET", "HEAD")
r.HandleFunc("/"+urlKeyExpr+"/meta", rl.viewPasteHandlerMeta).Methods("GET", "HEAD")
r.HandleFunc("/"+urlKeyWithExtExpr+"/meta", rl.viewPasteHandlerMeta).Methods("GET", "HEAD")
r.HandleFunc("/"+urlKeyExpr, rl.deletePasteHandler).Methods("DELETE")
r.HandleFunc("/"+urlKeyWithExtExpr, rl.deletePasteHandler).Methods("DELETE")
r.HandleFunc("/"+urlKeyExpr+"/delete", rl.deletePasteHandler).Methods("POST")
r.HandleFunc("/"+urlKeyWithExtExpr+"/delete", rl.deletePasteHandler).Methods("POST")
}
// StartMainServer starts the main http server listening on addr.
func StartMainServer(addr string, db *db.Database, fs *db.FileStore, rawRootURL string) {
var rootURL *url.URL
if rawRootURL != "" {
var err error
rootURL, err = url.Parse(rawRootURL)
if err != nil {
log.Fatalln(errors.Wrap(err, "could not parse rootURL flag"))
}
}
func StartMainServer(addr string, db *db.Database, fs *db.FileStore) {
rl := rushlink{
db: db,
fs: fs,
rootURL: rootURL,
}
// Initialize Gorilla router
router := mux.NewRouter()
router.Use(rl.metricsMiddleware)
router.Use(rl.recoveryMiddleware)
InitMainRouter(router, &rl)
router.Use(recoveryMiddleware)
router.HandleFunc("/", rl.indexGetHandler).Methods("GET")
router.HandleFunc("/", rl.newPasteHandler).Methods("POST")
router.HandleFunc("/{key:[A-Za-z0-9-_]{4,}}", rl.viewPasteHandler).Methods("GET")
router.HandleFunc("/{key:[A-Za-z0-9-_]{4,}}/nr", rl.viewPasteHandlerNoRedirect).Methods("GET")
router.HandleFunc("/{key:[A-Za-z0-9-_]{4,}}/meta", rl.viewPasteHandlerMeta).Methods("GET")
router.HandleFunc("/{key:[A-Za-z0-9-_]{4,}}", rl.deletePasteHandler).Methods("DELETE")
router.HandleFunc("/{key:[A-Za-z0-9-_]{4,}}/delete", rl.deletePasteHandler).Methods("POST")
router.HandleFunc("/uploads/{id:[A-Za-z0-9-_]+}/{filename:.+}", rl.uploadFileGetHandler).Methods("GET")
srv := &http.Server{
Handler: router,

View File

@ -16,20 +16,17 @@ import (
"strconv"
"strings"
text "text/template"
"time"
"github.com/pkg/errors"
)
const defaultScheme = "http"
// Plain text templates
var textBaseTemplate *text.Template = text.Must(text.New("").Parse(string(MustAsset("templates/txt/base.txt.tmpl"))))
var htmlBaseTemplate *html.Template = html.Must(html.New("").Parse(string(MustAsset("templates/html/base.html.tmpl"))))
// Template collections
var textTemplates = make(map[string]*text.Template)
var htmlTemplates = make(map[string]*html.Template)
var textTemplates = make(map[string]*text.Template, 0)
var htmlTemplates = make(map[string]*html.Template, 0)
// Used by resolveResponseContentType
var acceptHeaderMediaRangeRegex = regexp.MustCompile(`^\s*([^()<>@,;:\\"/\[\]?.=]+)/([^()<>@,;:\\"/\[\]?.=]+)\s*$`)
@ -75,37 +72,19 @@ func mustMatch(pattern, name string) bool {
return m
}
func mapExtend(m map[string]interface{}, key string, value interface{}) {
if m[key] != nil {
return
}
m[key] = value
func parseFail(tmplName string, err error) {
panic(errors.Wrapf(err, "parsing of %v failed", tmplName))
}
func (rl *rushlink) renderStatic(w http.ResponseWriter, r *http.Request, path string) {
var modTime time.Time
if info, err := AssetInfo(path); err == nil {
modTime = info.ModTime()
}
contents, err := Asset(path)
if err != nil {
rl.renderError(w, r, http.StatusNotFound, err.Error())
return
}
http.ServeContent(w, r, path, modTime, bytes.NewReader(contents))
}
func (rl *rushlink) render(w http.ResponseWriter, r *http.Request, status int, tmplName string, data map[string]interface{}) {
func render(w http.ResponseWriter, r *http.Request, tmplName string, data map[string]interface{}) {
contentType, err := resolveResponseContentType(r, []string{"text/plain", "text/html"})
if err != nil {
w.WriteHeader(http.StatusNotAcceptable)
fmt.Fprintf(w, "error parsing Accept header: %v\n", err)
return
}
// Add the request to the template data
mapExtend(data, "RootURL", rl.resolveRootURL(r))
mapExtend(data, "Request", r)
data["Request"] = r
switch contentType {
case "text/plain":
@ -115,12 +94,7 @@ func (rl *rushlink) render(w http.ResponseWriter, r *http.Request, status int, t
err = fmt.Errorf("'%v' not in textTemplates", tmplName)
break
}
if status != 0 {
w.WriteHeader(status)
}
if r.Method != "HEAD" {
err = tmpl.Execute(w, data)
}
case "text/html":
w.Header().Set("Content-Type", "text/html")
tmpl := htmlTemplates[tmplName]
@ -141,12 +115,7 @@ func (rl *rushlink) render(w http.ResponseWriter, r *http.Request, status int, t
}
return buf.String()
}
if status != 0 {
w.WriteHeader(status)
}
if r.Method != "HEAD" {
err = tmpl.Execute(w, data)
}
default:
// Fall back to plain text without template
w.WriteHeader(http.StatusNotAcceptable)
@ -158,44 +127,14 @@ func (rl *rushlink) render(w http.ResponseWriter, r *http.Request, status int, t
}
}
func (rl *rushlink) renderError(w http.ResponseWriter, r *http.Request, status int, msg string) {
rl.render(w, r, status, "error", map[string]interface{}{"Message": msg})
func renderError(w http.ResponseWriter, r *http.Request, status int, msg string) {
w.WriteHeader(status)
render(w, r, "error", map[string]interface{}{"Message": msg})
}
func (rl *rushlink) renderInternalServerError(w http.ResponseWriter, r *http.Request, err interface{}) {
func renderInternalServerError(w http.ResponseWriter, r *http.Request, err interface{}) {
msg := fmt.Sprintf("internal server error: %v", err)
rl.renderError(w, r, http.StatusInternalServerError, msg)
}
// resolveRootURL constructs the `scheme://host` part of rushlinks public API.
//
// If the `--root_url` flag is set, it will return that URL.
// Otherwise, this function will return 'https://{Host}', where `{Host}` is
// the value provided by the client in the HTTP `Host` header. This value may
// be invalid, but it is impossible to handle this error (because we *cannot*
// know the real host).
func (rl *rushlink) resolveRootURL(r *http.Request) string {
rlHost := rl.RootURL()
if rlHost != nil {
// Root URL overridden by command line arguments
return rlHost.String()
}
// Guess scheme
scheme := defaultScheme
forwardedScheme := r.Header.Get("X-Forwarded-Proto")
switch forwardedScheme {
case "http":
scheme = "http"
case "https":
scheme = "https"
}
// Guess host
host := r.Host
if forwardedHost := r.Header.Get("X-Forwarded-Host"); forwardedHost != "" {
host = forwardedHost
}
return scheme + "://" + host
renderError(w, r, http.StatusInternalServerError, msg)
}
// Try to resolve the preferred content-type for the response to this request.
@ -213,7 +152,7 @@ func resolveResponseContentType(r *http.Request, types []string) (string, error)
if len(types) == 0 {
return "", nil
}
acceptHeader := strings.TrimSpace(r.Header.Get("Accept"))
acceptHeader := r.Header.Get("Accept")
if acceptHeader == "" {
return types[0], nil
}
@ -231,7 +170,7 @@ func resolveResponseContentType(r *http.Request, types []string) (string, error)
choiceParts := strings.Split(avString, ";")
mediaRange := acceptHeaderMediaRangeRegex.FindStringSubmatch(choiceParts[0])
if mediaRange == nil {
return "", fmt.Errorf("bad media-range ('%v')", choiceParts[0])
return "", fmt.Errorf("bad media-range (\"%v\")", choiceParts[0])
}
av.Type = mediaRange[1]
av.Subtype = mediaRange[2]
@ -256,7 +195,7 @@ func resolveResponseContentType(r *http.Request, types []string) (string, error)
// Check if this parameter is still invalid in any case
acceptParams := acceptHeaderAcceptParamsRegex.FindStringSubmatchIndex(choiceParts[0])
if acceptParams == nil {
return "", fmt.Errorf("bad accept-params ('%v')", choiceParts[0])
return "", fmt.Errorf("bad accept-params (\"%v\")", choiceParts[0])
}
}
avs[i] = av

View File

@ -1,54 +0,0 @@
package rushlink
import (
"net/http"
"testing"
)
func resolveResponseContentTypeSuccess(t *testing.T, expected string, types []string, acceptVal string) {
r, err := http.NewRequest("HEAD", "", nil)
if err != nil {
panic(err)
}
r.Header.Set("Accept", acceptVal)
got, err := resolveResponseContentType(r, types)
if err != nil {
t.Errorf("error: '%v'\n", err)
}
if got != expected {
t.Errorf("error: '%v' should be '%v'\n", got, expected)
}
}
func resolveResponseContentTypeError(t *testing.T, expected string, types []string, acceptVal string) {
r, err := http.NewRequest("HEAD", "", nil)
if err != nil {
panic(err)
}
r.Header.Set("Accept", acceptVal)
got, err := resolveResponseContentType(r, types)
if err == nil {
t.Errorf("expected an error, but got a success: '%v'", got)
}
if got != "" {
t.Errorf("error: return value should be empty, not '%v'", got)
}
if err.Error() != expected {
t.Errorf("wrong error value error: got '%v', want '%v'\n", got, expected)
}
}
func TestResolveResponseContentType(t *testing.T) {
resolveResponseContentTypeSuccess(t, "", []string{}, "text/html")
resolveResponseContentTypeSuccess(t, "text/html", []string{"text/html"}, "")
resolveResponseContentTypeSuccess(t, "text/html", []string{"text/txt", "text/html"}, "text/txt;q=0.5,text/html")
resolveResponseContentTypeSuccess(t, "text/html", []string{"text/txt", "text/html"}, "text/txt;q=0.5,text/html;q=0.9")
resolveResponseContentTypeSuccess(t, "", []string{"text"}, "text/html")
resolveResponseContentTypeSuccess(t, "", []string{"text/*"}, "image/*")
// Issue #17
resolveResponseContentTypeSuccess(t, "*/*", []string{"*/*"}, "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3")
// Issue #66
resolveResponseContentTypeError(t, "bad media-range ('*')", []string{"text/plain"}, " *")
}