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Leonid Maslakov 6 months ago
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/dist/*
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# BUILD
FROM golang:1.18.7-alpine as build
WORKDIR /build
RUN apk update && apk upgrade && apk add --no-cache make git gcc musl-dev
COPY ./go.mod ./
COPY go.sum ./
RUN go mod download -x
COPY . ./
RUN make
# RUN
FROM alpine:latest as run
WORKDIR /
COPY --from=build /build/dist/bin/* /usr/local/bin/
COPY --from=build /build/dist/share/ /usr/local/share/
COPY ./entrypoint.sh /
RUN chmod 755 /entrypoint.sh && mkdir -p /data/
VOLUME /data
EXPOSE 80/tcp
CMD [ "/entrypoint.sh" ]

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LICENSE
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GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

23
Makefile
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NAME = lenmonitor
MAIN_GO = ./cmd/*.go
export GOMODULE111=on
LDFLAGS = -w -s -X "main.Version=$(shell git describe --tags --always | sed 's/-/+/' | sed 's/^v//')"
.PHONY: all fmt clean
all:
mkdir -p ./dist/bin/
mkdir -p ./dist/share/$(NAME)
go build -trimpath -ldflags="$(LDFLAGS)" -o ./dist/bin/$(NAME) $(MAIN_GO)
chmod +x ./dist/bin/$(NAME)
cp -r ./web ./dist/share/$(NAME)
fmt:
@gofmt -w $(shell find ./ -type f -name '*.go')
clean:
rm -rf ./dist/

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README.md
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**Lenmonitor** stores and regularly updates a list of instances of different self-hosted services.
> ## Attention Beta version!
> Lenmonitor is in beta version, so it may not have all the basic functionality or work as planned.
## Features
- Does not use JavaScript or Cookies.
- Has its own API.
- Open source and self-hosted.
- Doesn't even require registration to add a server.
## Launch your own server
1. If you don't already have Docker installed, do so:
```
apt-get install -y docker docker.io docker-compose
```
2. Use a file like this `docker-compose.yml`:
```yaml
version: "2"
services:
lenmonitor:
image: git.lcomrade.su/root/lenmonitor:latest
restart: always
environment:
# All parameters are optional
- LENMONITOR_ADDRESS=:80 # ADDRES:PORT for HTTP server.
- LENMONITOR_DB_DRIVER=sqlite3 # Currently supported drivers: 'sqlite3' and 'postgres'.
- LENMONITOR_DB_SOURCE=/data/lenmonitor.db # DB source.
- LENMONITOR_ROBOTS_DISALLOW=false # Prohibits search engine crawlers from indexing site using robots.txt file.
- LENMONITOR_ADMIN_NAME= # Name of the administrator of this server.
- LENMONITOR_ADMIN_MAIL= # Email of the administrator of this server.
volumes:
# /data/lenmonitor.db - SQLite DB if used.
- "${PWD}/data:/data"
- "/etc/timezone:/etc/timezone:ro"
- "/etc/localtime:/etc/localtime:ro"
ports:
- "80:80"
```
3. Execute while in the directory where `docker-compose.yml` is located:
```
docker-compose pull && docker-compose up -d
```
TIP: If you want to install updates, run: `docker-compose pull && docker-compose up -d && docker system prune -a -f`
## Build from source code
On Debian/Ubuntu:
```
sudo apt update
sudo apt -y install git make gcc golang
git clone https://git.lcomrade.su/root/lenmonitor.git
cd ./lenmonitor/
make
```
You can find the result of the build in the `./dist/` directory.
## Build Docker image
**Why is it necessary?**
An official image may not support your architecture e.g. ARM64, PowerPC, etc.
So you can build your own image to run on an officially unsupported architecture
(of course you have to rebuild it every time you update Lenpaste).
On Debian/Ubuntu:
```
sudo apt update
sudo apt -y install git docker docker.io
git clone https://git.lcomrade.su/root/lenmonitor.git
cd ./lenmonitor/
git checkout vX.X
sudo docker build -t localhost/lenmonitor:latest ./
```
The `localhost/lenmonitor:latest` image should now have appeared on your local machine.
You can use it in `docker-compose.yml` or copy it to another machine.
## Other documentation
For instance administrators:
- [Reverse proxy: Nginx](docs/reverse_proxy_nginx.md)
- [Database: PostgreSQL](docs/db_postgresql.md)
For developers:
- [Lenmonitor API](https://monitor.lcomrade.su/docs/apiv1)
## Bugs and Suggestion
If you have any questions or suggestions, you can write here:
- Join to Matrix room: [`#lenmonitor:lcomrade.su`](https://matrix.to/#/#lenmonitor:lcomrade.su)
- Contact me: Leonid Maslakov <root@lcomrade.su>
## Donate
All donations will go to Leonid Maslakov, for now the sole developer:
- Qiwi: https://qiwi.com/n/LCOMRADE

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cmd/main.go
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// Copyright (C) 2022 Leonid Maslakov.
// This file is part of Lenmonitor.
// Lenmonitor is free software: you can redistribute it
// and/or modify it under the terms of the
// GNU Affero Public License as published by the
// Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
// Lenmonitor is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Affero Public License for more details.
// You should have received a copy of the GNU Affero Public License along with Lenmonitor.
// If not, see <https://www.gnu.org/licenses/>.
package main
import (
"flag"
"git.lcomrade.su/root/lenmonitor/internal/apiv1"
"git.lcomrade.su/root/lenmonitor/internal/config"
"git.lcomrade.su/root/lenmonitor/internal/logger"
"git.lcomrade.su/root/lenmonitor/internal/storage"
"git.lcomrade.su/root/lenmonitor/internal/web"
"git.lcomrade.su/root/lenmonitor/internal/tester"
"net/http"
"os"
"time"
"errors"
"path/filepath"
)
const(
UpdateFrequency = 10 * 60 // 10 min
)
var Version = "unknown"
func exitOnError(e error) {
println("error:", e.Error())
os.Exit(1)
}
func printHelp(noErrors bool) {
println("Usage:", os.Args[0], "[-web-dir] [OPTION]...")
println("")
println(" -addres ADDRES:PORT (default: :80)")
println(" -web-dir Dir with page templates and static content")
println(" -db-driver Currently supported drivers: 'sqlite3' and 'postgres' (default: sqlite3)")
println(" -db-source DB source.")
println(" -robots-disallow Prohibits search engine crawlers from indexing site using robots.txt file.")
println(" -admin-name Name of the administrator of this server.")
println(" -admin-mail Email of the administrator of this server.")
println(" -version Display version and exit")
println(" -help Display this help and exit")
println()
println("Exit status:")
println(" 0 if you used the -help or -version flag")
println(" 1 if there is an error during initialization")
println(" 2 if command line arguments are not entered correctly")
if noErrors == false {
os.Exit(2)
}
os.Exit(0)
}
func printVersion() {
println(Version)
os.Exit(0)
}
func printFlagNotSet(flg string) {
println("flag is not set:", flg)
os.Exit(2)
}
func main() {
// Get ./bin/ dir
binFile, err := os.Executable()
if err != nil {
exitOnError(err)
}
binFile, err = filepath.EvalSymlinks(binFile)
if err != nil {
exitOnError(err)
}
binDir := filepath.Dir(binFile)
// Get ./share/lenmonitor/web dir
defaultWebDir := filepath.Join(binDir, "../share/lenmonitor/web")
// Read cmd args
flag.Usage = func() { printHelp(false) }
flagAddress := flag.String("address", ":80", "")
flagWebDir := flag.String("web-dir", defaultWebDir, "")
flagDbDriver := flag.String("db-driver", "sqlite3", "")
flagDbSource := flag.String("db-source", "", "")
flagRobotsDisallow := flag.Bool("robots-disallow", false, "")
flagAdminName := flag.String("admin-name", "", "")
flagAdminMail := flag.String("admin-mail", "", "")
flagVersion := flag.Bool("version", false, "")
flagHelp := flag.Bool("help", false, "")
flag.Parse()
// -help flag
if *flagHelp == true {
printHelp(true)
}
// -version flag
if *flagVersion == true {
printVersion()
}
// -db-source flag
if *flagDbSource == "" {
printFlagNotSet("-db-source")
}
// Settings
db := storage.DB{
DriverName: *flagDbDriver,
DataSourceName: *flagDbSource,
}
log := logger.Config{
TimeFormat: "2006/01/02 15:04:05",
}
cfg := config.Config{
DB: db,
Log: log,
Version: Version,
AdminName: *flagAdminName,
AdminMail: *flagAdminMail,
RobotsDisallow: *flagRobotsDisallow,
}
apiv1Data := apiv1.Load(cfg)
// Init data base
err = db.InitDB()
if err != nil {
exitOnError(err)
}
// Load pages
webData, err := web.Load(cfg, *flagWebDir)
if err != nil {
exitOnError(err)
}
// Handlers
http.HandleFunc("/robots.txt", func(rw http.ResponseWriter, req *http.Request) {
webData.RobotsTxtHand(rw, req)
})
if *flagRobotsDisallow == false {
http.HandleFunc("/sitemap.xml", func(rw http.ResponseWriter, req *http.Request) {
webData.SitemapHand(rw, req)
})
}
http.HandleFunc("/style.css", func(rw http.ResponseWriter, req *http.Request) {
webData.StyleCSSHand(rw, req)
})
http.HandleFunc("/", func(rw http.ResponseWriter, req *http.Request) {
webData.MainHand(rw, req)
})
http.HandleFunc("/add", func(rw http.ResponseWriter, req *http.Request) {
webData.AddHand(rw, req)
})
http.HandleFunc("/about", func(rw http.ResponseWriter, req *http.Request) {
webData.AboutHand(rw, req)
})
http.HandleFunc("/about/license", func(rw http.ResponseWriter, req *http.Request) {
webData.LicenseHand(rw, req)
})
http.HandleFunc("/docs", func(rw http.ResponseWriter, req *http.Request) {
webData.DocsHand(rw, req)
})
http.HandleFunc("/docs/apiv1", func(rw http.ResponseWriter, req *http.Request) {
webData.DocsApiV1Hand(rw, req)
})
http.HandleFunc("/api/", func(rw http.ResponseWriter, req *http.Request) {
apiv1Data.MainHand(rw, req)
})
http.HandleFunc("/api/v1/lenpasteAdd", func(rw http.ResponseWriter, req *http.Request) {
apiv1Data.LenpasteAddHand(rw, req)
})
http.HandleFunc("/api/v1/lenpasteList", func(rw http.ResponseWriter, req *http.Request) {
apiv1Data.LenpasteListHand(rw, req)
})
http.HandleFunc("/api/v1/getServerInfo", func(rw http.ResponseWriter, req *http.Request) {
apiv1Data.GetServerInfoHand(rw, req)
})
// Run background job
go func(){
for {
// Getting the list of servers
timeNowUnix := time.Now().Unix()
list, err := db.LenpasteList()
if err != nil {
log.Error(errors.New("worker: refresh Lenpaste list: "+err.Error()))
}
// Check list
for _, srv := range list {
if timeNowUnix > srv.LastUpdateTime + UpdateFrequency {
log.Info("Refresh Lenpaste list: "+srv.Domain)
// Test server
info, err := tester.Lenpaste(srv.Domain)
if err != nil {
log.Error(errors.New("worker: refresh Lenpaste list: "+err.Error()))
}
// Save to DB
err = db.LenpasteAddOrUpdate(info)
if err != nil {
log.Error(errors.New("worker: refresh Lenpaste list: "+err.Error()))
return
}
}
}
// Wait
time.Sleep(1 * time.Minute)
}
}()
// Run HTTP server
log.Info("Run HTTP server on " + *flagAddress)
err = http.ListenAndServe(*flagAddress, nil)
if err != nil {
exitOnError(err)
}
}

31
docs/db_postgresql.md
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# Database: PostgreSQL
Here is an example of the basic Docker Compose config (`docker-compose.yml`):
```yaml
version: "2"
services:
lenmonitor:
image: git.lcomrade.su/root/lenmonitor:latest
restart: always
environment:
- LENPASTE_DB_DRIVER=postgres
- LENPASTE_DB_SOURCE=postgres://lenmonitor:pass@postgres/lenmonitor?sslmode=disable
volumes:
- "${PWD}/data:/data"
- "/etc/timezone:/etc/timezone:ro"
- "/etc/localtime:/etc/localtime:ro"
ports:
- "80:80"
depends_on:
- postgres
postgres:
image: postgres
restart: always
environment:
- PGDATA=/var/lib/postgresql/data/pgdata
- POSTGRES_USER=lenmonitor
- POSTGRES_PASSWORD=pass
volumes:
- "${PWD}/data/postgres:/var/lib/postgresql/data"
```

57
docs/reverse_proxy_nginx.md
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# Reverse proxy: Nginx
Here is an example of the basic Nginx config (`/etc/nginx/nginx.conf`):
```nginx
events {
worker_connections 1024;
}
http {
error_log /var/log/nginx/error.log warn;
server_tokens off; # Disables emitting nginx version on error pages and in the “Server” response header field.
ssl_protocols TLSv1.2 TLSv1.3; # TLSv1.2 enables HTTPS on older devices.
client_max_body_size 1M;
client_body_timeout 300s;
proxy_http_version 1.1;
# Required for Lenpaste to work correctly.
proxy_set_header Host $host;
proxy_set_header X-Forwarded-Proto $scheme;
}
# HTTP
server {
server_name YOUR_DOMAIN;
listen 80;
listen [::]:80;
access_log /var/log/nginx/YOUR_DOMAIN.access.log combined;
location / {
proxy_pass http://localhost:8000/;
#return 301 https://$host$request_uri; - redirect to HTTPS
}
# Required for Lets Encrypt
location /.well-known/acme-challenge/ {
root /var/www/letsencrypt/;
}
}
# HTTPS
server {
server_name YOUR_DOMAIN;
listen 443 ssl http2;
listen [::]:443 ssl http2;
ssl_certificate /etc/letsencrypt/live/YOUR_DOMAIN/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/YOUR_DOMAIN/privkey.pem;
access_log /var/log/nginx/YOUR_DOMAIN.access.log combined;
location / {
proxy_pass http://localhost:8000/;
}
}
```

47
entrypoint.sh
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#!/bin/sh
set -e
RUN_CMD="lenmonitor"
# LENMONITOR_ADDRESS
if [[ -n "$LENMONITOR_ADDRESS" ]]; then
RUN_CMD="$RUN_CMD -address $LENMONITOR_ADDRESS"
fi
# LENMONITOR_DB_DRIVER
if [[ -n "$LENMONITOR_DB_DRIVER" ]]; then
RUN_CMD="$RUN_CMD -db-driver '$LENMONITOR_DB_DRIVER'"
fi
# LENMONITOR_DB_SOURCE
if [[ -z "$LENMONITOR_DB_DRIVER" || "$_DB_DRIVER" == "sqlite3" ]]; then
RUN_CMD="$RUN_CMD -db-source /data/lenmonitor.db"
else
RUN_CMD="$RUN_CMD -db-source '$LENMONITOR_DB_SOURCE'"
fi
# LENMONITOR_ROBOTS_DISALLOW
if [[ "$LENMONITOR_ROBOTS_DISALLOW" == "true" ]]; then
RUN_CMD="$RUN_CMD -robots-disallow"
else
if [[ "$LENMONITOR_ROBOTS_DISALLOW" != "" && "$LENMONITOR_ROBOTS_DISALLOW" != "false" ]]; then
echo "[ENTRYPOINT] Error: unknown: LENMONITOR_ROBOTS_DISALLOW = $LENMONITOR_ROBOTS_DISALLOW"
exit 2
fi
fi
# LENMONITOR_ADMIN_MAIL
if [[ -n "$LENMONITOR_ADMIN_MAIL" ]]; then
RUN_CMD="$RUN_CMD -admin-mail '$LENMONITOR_ADMIN_MAIL'"
fi
# Run Lenmonitor
echo "[ENTRYPOINT] $RUN_CMD"
sh -c "$RUN_CMD"

12
go.mod
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module git.lcomrade.su/root/lenmonitor
go 1.11
replace git.lcomrade.su/root/lenmonitor => ./
require (
git.lcomrade.su/root/lenpaste v1.1.1
github.com/alecthomas/chroma v0.10.0
github.com/lib/pq v1.10.6
github.com/mattn/go-sqlite3 v1.14.15
)

18
go.sum
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@ -0,0 +1,18 @@
git.lcomrade.su/root/lenpaste v1.1.1/go.mod h1:H7xyqwWytnBJZejyREtfzrFNbIwegaPij63Pc9OU5+o=
git.lcomrade.su/root/lineend v1.0.0/go.mod h1:D0q3jMx0I1PFZjAFwkmUNW8D5tIw8rZJoeUAxhYD7Ec=
github.com/alecthomas/chroma v0.10.0 h1:7XDcGkCQopCNKjZHfYrNLraA+M7e0fMiJ/Mfikbfjek=
github.com/alecthomas/chroma v0.10.0/go.mod h1:jtJATyUxlIORhUOFNA9NZDWGAQ8wpxQQqNSB4rjA/1s=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dlclark/regexp2 v1.4.0 h1:F1rxgk7p4uKjwIQxBs9oAXe5CqrXlCduYEJvrF4u93E=
github.com/dlclark/regexp2 v1.4.0/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
github.com/lib/pq v1.10.6 h1:jbk+ZieJ0D7EVGJYpL9QTz7/YW6UHbmdnZWYyK5cdBs=
github.com/lib/pq v1.10.6/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
github.com/mattn/go-sqlite3 v1.14.14/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
github.com/mattn/go-sqlite3 v1.14.15 h1:vfoHhTN1af61xCRSWzFIWzx2YskyMTwHLrExkBOjvxI=
github.com/mattn/go-sqlite3 v1.14.15/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

49
internal/apiv1/api.go
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// Copyright (C) 2022 Leonid Maslakov.
// This file is part of Lenmonitor.
// Lenmonitor is free software: you can redistribute it
// and/or modify it under the terms of the
// GNU Affero Public License as published by the
// Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
// Lenmonitor is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Affero Public License for more details.
// You should have received a copy of the GNU Affero Public License along with Lenmonitor.
// If not, see <https://www.gnu.org/licenses/>.
package apiv1
import (
"git.lcomrade.su/root/lenmonitor/internal/config"
"git.lcomrade.su/root/lenmonitor/internal/logger"
"git.lcomrade.su/root/lenmonitor/internal/storage"
)
type Data struct {
Log logger.Config
DB storage.DB
Version *string
AdminName *string
AdminMail *string
}
func Load(cfg config.Config) Data {
return Data{
DB: cfg.DB,
Log: cfg.Log,
Version: &cfg.Version,
AdminName: &cfg.AdminName,
AdminMail: &cfg.AdminMail,
}
}
type okAnswer struct {
Ok bool `json:"ok"`
}

43
internal/apiv1/api_error.go
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package apiv1
import (
"encoding/json"
"git.lcomrade.su/root/lenmonitor/internal/netshare"
"net/http"
)
type errorType struct {
Code int `json:"code"`
Error string `json:"error"`
}
func (data Data) writeError(rw http.ResponseWriter, req *http.Request, e error) {
var resp errorType
if e == netshare.ErrBadRequest {
resp.Code = 400
resp.Error = "Bad Request"
} else if e == netshare.ErrNotFound {
resp.Code = 404
resp.Error = "Not Found"
} else if e == netshare.ErrMethodNotAllowed {
resp.Code = 405
resp.Error = "Method Not Allowed"
} else {
resp.Code = 500
resp.Error = "Internal Server Error"
data.Log.HttpError(req, e)
}
rw.Header().Set("Content-Type", "application/json")
rw.WriteHeader(resp.Code)
err := json.NewEncoder(rw).Encode(resp)
if err != nil {
data.Log.HttpError(req, err)
return
}
}

94
internal/apiv1/api_lenpaste.go
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// Copyright (C) 2022 Leonid Maslakov.
// This file is part of Lenmonitor.
// Lenmonitor is free software: you can redistribute it
// and/or modify it under the terms of the
// GNU Affero Public License as published by the
// Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
// Lenmonitor is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Affero Public License for more details.
// You should have received a copy of the GNU Affero Public License along with Lenmonitor.
// If not, see <https://www.gnu.org/licenses/>.
package apiv1
import (
"encoding/json"
"git.lcomrade.su/root/lenmonitor/internal/tester"
"git.lcomrade.su/root/lenmonitor/internal/netshare"
"net/http"
)
// POST /api/v1/lenpasteAdd
func (data Data) LenpasteAddHand(rw http.ResponseWriter, req *http.Request) {
// Log request
data.Log.HttpRequest(req)
// Check method
if req.Method != "POST" {
data.writeError(rw, req, netshare.ErrMethodNotAllowed)
return
}
// Get form data and add server
req.ParseForm()
// Check server
info, err := tester.Lenpaste(req.PostForm.Get("domain"))
if err != nil {
data.writeError(rw, req, netshare.ErrBadRequest)
return
} else {
// Save to DB
err := data.DB.LenpasteAddOrUpdate(info)
if err != nil {
data.writeError(rw, req, netshare.ErrInternal)
return
}
}
// Return response
rw.Header().Set("Content-Type", "application/json")
err = json.NewEncoder(rw).Encode(okAnswer{Ok: true})
if err != nil {
data.Log.HttpError(req, err)
return
}
}
// GET /api/v1/lenpasteList
func (data Data) LenpasteListHand(rw http.ResponseWriter, req *http.Request) {
// Log request
data.Log.HttpRequest(req)
// Check method
if req.Method != "GET" {
data.writeError(rw, req, netshare.ErrMethodNotAllowed)
return
}
// Get server list
list, err := data.DB.LenpasteList()
if err != nil {
data.writeError(rw, req, netshare.ErrInternal)
return
}
// Return response
rw.Header().Set("Content-Type", "application/json")
err = json.NewEncoder(rw).Encode(list)
if err != nil {
data.Log.HttpError(req, err)
return
}
}

29
internal/apiv1/api_main.go
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@ -0,0 +1,29 @@
// Copyright (C) 2022 Leonid Maslakov.
// This file is part of Lenmonitor.
// Lenmonitor is free software: you can redistribute it
// and/or modify it under the terms of the
// GNU Affero Public License as published by the
// Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
// Lenmonitor is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Affero Public License for more details.
// You should have received a copy of the GNU Affero Public License along with Lenmonitor.
// If not, see <https://www.gnu.org/licenses/>.
package apiv1
import (
"git.lcomrade.su/root/lenmonitor/internal/netshare"
"net/http"
)
// GET /api/v1/
func (data Data) MainHand(rw http.ResponseWriter, req *http.Request) {
data.writeError(rw, req, netshare.ErrNotFound)
}

61
internal/apiv1/api_server.go
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// Copyright (C) 2022 Leonid Maslakov.
// This file is part of Lenmonitor.
// Lenmonitor is free software: you can redistribute it
// and/or modify it under the terms of the
// GNU Affero Public License as published by the
// Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
// Lenmonitor is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Affero Public License for more details.
// You should have received a copy of the GNU Affero Public License along with Lenmonitor.
// If not, see <https://www.gnu.org/licenses/>.
package apiv1
import (
"encoding/json"
"git.lcomrade.su/root/lenmonitor/internal/netshare"
"net/http"
)
type serverInfoType struct {
Software string `json:"software"`
Version string `json:"version"`
AdminName string `json:"adminName"`
AdminMail string `json:"adminMail"`
}
// GET /api/v1/getServerInfo
func (data Data) GetServerInfoHand(rw http.ResponseWriter, req *http.Request) {
// Log request
data.Log.HttpRequest(req)
// Check method
if req.Method != "GET" {
data.writeError(rw, req, netshare.ErrMethodNotAllowed)
return
}
// Prepare data
serverInfo := serverInfoType{
Software: "Lenmonitor",
Version: *data.Version,
AdminName: *data.AdminName,
AdminMail: *data.AdminMail,
}
// Return response
rw.Header().Set("Content-Type", "application/json")
err := json.NewEncoder(rw).Encode(serverInfo)
if err != nil {
data.Log.HttpError(req, err)
return
}
}

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internal/config/config.go
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// Copyright (C) 2022 Leonid Maslakov.
// This file is part of Lenmonitor.
// Lenmonitor is free software: you can redistribute it
// and/or modify it under the terms of the
// GNU Affero Public License as published by the
// Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
// Lenmonitor is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Affero Public License for more details.
// You should have received a copy of the GNU Affero Public License along with Lenmonitor.
// If not, see <https://www.gnu.org/licenses/>.
package config
import (
"git.lcomrade.su/root/lenmonitor/internal/logger"
"git.lcomrade.su/root/lenmonitor/internal/storage"
)
type Config struct {
DB storage.DB
Log logger.Config
Version string
AdminName string
AdminMail string
RobotsDisallow bool
}

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internal/logger/logger.go
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// Copyright (C) 2022 Leonid Maslakov.
// This file is part of Lenmonitor.
// Lenmonitor is free software: you can redistribute it
// and/or modify it under the terms of the
// GNU Affero Public License as published by the
// Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
// Lenmonitor is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Affero Public License for more details.
// You should have received a copy of the GNU Affero Public License along with Lenmonitor.
// If not, see <https://www.gnu.org/licenses/>.
package logger
import (
"fmt"
"net/http"
"time"
)
type Config struct {
TimeFormat string
}
func (config Config) Info(msg string) {
now := time.Now()
fmt.Println(now.Format(config.TimeFormat), "[INFO]", msg)
}
func (config Config) Error(err error) {
now := time.Now()
fmt.Println(now.Format(config.TimeFormat), "[ERROR]", err.Error())
}
func (config Config) HttpRequest(req *http.Request) {
now := time.Now()
fmt.Println(now.Format(config.TimeFormat), "[REQUEST]", req.RemoteAddr, req.Method, req.URL.Path)
}
func (config Config) HttpError(req *http.Request, err error) {
now := time.Now()
fmt.Println(now.Format(config.TimeFormat), "[ERROR]", req.RemoteAddr, req.Method, req.URL.Path, "Error:", err.Error())
}

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internal/netshare/netshare.go
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package netshare
import (
"errors"
)
var (
ErrBadRequest = errors.New("Bad Request") // 400
ErrNotFound = errors.New("Not Found") // 404
ErrMethodNotAllowed = errors.New("Method Not Allowed") // 405
ErrInternal = errors.New("Internal Server Error") // 500
)

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internal/netshare/netshare_host.go
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// Copyright (C) 2022 Leonid Maslakov.
// This file is part of Lenmonitor.
// Lenmonitor is free software: you can redistribute it
// and/or modify it under the terms of the
// GNU Affero Public License as published by the
// Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
// Lenmonitor is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Affero Public License for more details.
// You should have received a copy of the GNU Affero Public License along with Lenmonitor.
// If not, see <https://www.gnu.org/licenses/>.
package netshare
import (
"net/http"
)
func GetHost(req *http.Request) string {
// Read header
xHost := req.Header.Get("X-Forwarded-Host")
// Check
if xHost != "" {
return xHost
}
return req.Host
}
func GetProtocol(header http.Header) string {
// Read header
xProto := header.Get("X-Forwarded-Proto")
// Check
if xProto != "" {
return xProto
}
return "http"
}

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internal/storage/storage.go
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// Copyright (C) 2022 Leonid Maslakov.
// This file is part of Lenmonitor.
// Lenmonitor is free software: you can redistribute it
// and/or modify it under the terms of the
// GNU Affero Public License as published by the
// Free Software Foundation, either version 3 of the License,