go module

go.mod

@@ -0,0 +1,12 @@
+module git.redstoneunion.de/MrGeorgen/RBU_account
+
+go 1.14
+
+require (
+	github.com/bwmarrin/discordgo v0.20.3
+	github.com/dlclark/regexp2 v1.2.0
+	github.com/go-sql-driver/mysql v1.5.0
+	github.com/gorilla/websocket v1.4.2 // indirect
+	golang.org/x/crypto v0.0.0-20200604202706-70a84ac30bf9 // indirect
+	golang.org/x/sys v0.0.0-20200610111108-226ff32320da // indirect
+)

go.sum

@@ -0,0 +1,22 @@
+github.com/bwmarrin/discordgo v0.20.3 h1:AxjcHGbyBFSC0a3Zx5nDQwbOjU7xai5dXjRnZ0YB7nU=
+github.com/bwmarrin/discordgo v0.20.3/go.mod h1:O9S4p+ofTFwB02em7jkpkV8M3R0/PUVOwN61zSZ0r4Q=
+github.com/dlclark/regexp2 v1.2.0 h1:8sAhBGEM0dRWogWqWyQeIJnxjWO6oIjl8FKqREDsGfk=
+github.com/dlclark/regexp2 v1.2.0/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
+github.com/go-sql-driver/mysql v1.5.0 h1:ozyZYNQW3x3HtqT1jira07DN2PArx2v7/mN66gGcHOs=
+github.com/go-sql-driver/mysql v1.5.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
+github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
+github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
+github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16 h1:y6ce7gCWtnH+m3dCjzQ1PCuwl28DDIc3VNnvY29DlIA=
+golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20200604202706-70a84ac30bf9 h1:vEg9joUBmeBcK9iSJftGNf3coIG4HqZElCPehJsfAYM=
+golang.org/x/crypto v0.0.0-20200604202706-70a84ac30bf9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d h1:+R4KGOnez64A81RvjARKc4UT5/tI9ujCIVX+P5KiHuI=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200610111108-226ff32320da h1:bGb80FudwxpeucJUjPYJXuJ8Hk91vNtfvrymzwiei38=
+golang.org/x/sys v0.0.0-20200610111108-226ff32320da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

src/main.go

@@ -12,9 +12,11 @@ import (
 	"net/http"
 	"os"
 	"regexp"
+	"strings"
 )
 var discord *discordgo.Session
 var secret secrets_json
+var cacheAccounts []account
 type account struct {
 	email    string
 	username string
@@ -31,6 +33,10 @@ type WrongAccount struct {
 type registertmpl struct {
 	Success bool
 	WrongAccount WrongAccount
+	AlreadyEsitsInDatabase struct{
+		Username        bool
+		DiscordUsername bool
+	}
 }
 type SubmitStruct struct {
 	Success bool
@@ -42,7 +48,7 @@ type secrets_json struct {
 }
 
 func main() {
-	cacheAccounts := make([]account, 1)
+	cacheAccounts = make([]account, 1)
 	var newRbuMember *discordgo.Member
 	var dmChannel *discordgo.Channel
 	var err error
@@ -86,13 +92,18 @@ func main() {
 			}
 			registerstruct.WrongAccount.Email, _ = remail.MatchString(newAccount.email)
 			registerstruct.WrongAccount.Email = !registerstruct.WrongAccount.Email
-			registerstruct.WrongAccount.User = !rusername.MatchString(newAccount.username)
+			registerstruct.WrongAccount.User = !rusername.MatchString(newAccount.username) || strings.Contains(newAccount.username, "\"")
 			registerstruct.WrongAccount.Pass, _ = rpassword.MatchString(newAccount.password)
 			registerstruct.WrongAccount.Pass = !registerstruct.WrongAccount.Pass
 			newRbuMember, registerstruct.WrongAccount.DiscordUser = getRbuMember(newAccount.discordUsername)
 			registerstruct.WrongAccount.DiscordUser = !registerstruct.WrongAccount.DiscordUser
-			if !registerstruct.WrongAccount.User && !registerstruct.WrongAccount.Pass && !registerstruct.WrongAccount.Email && !registerstruct.WrongAccount.DiscordUser {
-				registerstruct.Success = true
+			{
+				var username string
+				registerstruct.AlreadyEsitsInDatabase.Username = db.QueryRow("select username from account where username = ?", newAccount.username).Scan(&username) == nil || UsernameExistsInMem(newAccount.username) // check if username exits
+				registerstruct.AlreadyEsitsInDatabase.DiscordUsername = db.QueryRow("select username from account where discordUsername = ?", newAccount.discordUsername).Scan(&username) == nil || discordUsernameExistsInMem(newAccount.discordUsername)
+			}
+			registerstruct.Success = !registerstruct.WrongAccount.User && !registerstruct.WrongAccount.Pass && !registerstruct.WrongAccount.Email && !registerstruct.WrongAccount.DiscordUser && !registerstruct.AlreadyEsitsInDatabase.DiscordUsername && !registerstruct.AlreadyEsitsInDatabase.Username
+			if registerstruct.Success {
 				newAccount.token, err = GenerateRandomStringURLSafe(64)
 				log(err)
 				dmChannel, err = discord.UserChannelCreate(newRbuMember.User.ID)
@@ -139,3 +150,20 @@ func log(err error)  {
 	}
 }
 
+func UsernameExistsInMem(username string) bool {
+	for _, element := range cacheAccounts {
+		if element.username == username {
+			return true
+		}
+	}
+	return false
+}
+
+func discordUsernameExistsInMem(discordUsername string) bool {
+	for _, element := range cacheAccounts {
+		if element.discordUsername == discordUsername {
+			return true
+		}
+	}
+	return false
+}

tmpl/register.html

@@ -25,4 +25,10 @@
 {{end}}
 {{if .WrongAccount.DiscordUser}}
 	<p>Discordbenutzer ist nicht auf den RBU server. Beachte den tag wegzulassen.</p>
+{{end}}
+{{if .AlreadyEsitsInDatabase.Username}}
+	<p>Diesen Benutzername ist leider schon vergeben.</p>
+{{end}}
+{{if .AlreadyEsitsInDatabase.DiscordUsername}}
+	<p>Dieses RBU Mitglied hat bereits einen Account.</p>
 {{end}}