[PLT-8430] Auto lowercase team and channel names in API requests (#7992)

api4/channel_test.go

@@ -9,6 +9,7 @@ import (
 	"reflect"
 	"sort"
 	"strconv"
+	"strings"
 	"testing"
 
 	"github.com/mattermost/mattermost-server/model"
@@ -1136,6 +1137,9 @@ func TestGetChannelByName(t *testing.T) {
 		t.Fatal("names did not match")
 	}
 
+	_, resp = Client.GetChannelByName(strings.ToUpper(th.BasicPrivateChannel.Name), th.BasicTeam.Id, "")
+	CheckNoError(t, resp)
+
 	Client.RemoveUserFromChannel(th.BasicChannel.Id, th.BasicUser.Id)
 	_, resp = Client.GetChannelByName(th.BasicChannel.Name, th.BasicTeam.Id, "")
 	CheckNoError(t, resp)

api4/params.go

@@ -6,6 +6,7 @@ package api4
 import (
 	"net/http"
 	"strconv"
+	"strings"
 
 	"github.com/gorilla/mux"
 )
@@ -115,11 +116,11 @@ func ApiParamsFromRequest(r *http.Request) *ApiParams {
 	}
 
 	if val, ok := props["team_name"]; ok {
-		params.TeamName = val
+		params.TeamName = strings.ToLower(val)
 	}
 
 	if val, ok := props["channel_name"]; ok {
-		params.ChannelName = val
+		params.ChannelName = strings.ToLower(val)
 	}
 
 	if val, ok := props["category"]; ok {

api4/team_test.go

@@ -710,6 +710,9 @@ func TestGetTeamByName(t *testing.T) {
 	_, resp = Client.GetTeamByName("", "")
 	CheckNotFoundStatus(t, resp)
 
+	_, resp = th.SystemAdminClient.GetTeamByName(strings.ToUpper(team.Name), "")
+	CheckNoError(t, resp)
+
 	Client.Logout()
 	_, resp = Client.GetTeamByName(team.Name, "")
 	CheckUnauthorizedStatus(t, resp)