v8.0 module release (#22975)

https://mattermost.atlassian.net/browse/MM-52079

```release-note
We upgrade the module version to 8.0. The new module path is github.com/mattermost-server/server/v8.
```


Co-authored-by: Doug Lauder <wiggin77@warpmail.net>

server/model/session.go

@@ -0,0 +1,249 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/mattermost/mattermost-server/server/v8/platform/shared/mlog"
+)
+
+const (
+	SessionCookieToken                = "MMAUTHTOKEN"
+	SessionCookieUser                 = "MMUSERID"
+	SessionCookieCsrf                 = "MMCSRF"
+	SessionCookieCloudUrl             = "MMCLOUDURL"
+	SessionCacheSize                  = 35000
+	SessionPropPlatform               = "platform"
+	SessionPropOs                     = "os"
+	SessionPropBrowser                = "browser"
+	SessionPropType                   = "type"
+	SessionPropUserAccessTokenId      = "user_access_token_id"
+	SessionPropIsBot                  = "is_bot"
+	SessionPropIsBotValue             = "true"
+	SessionPropOAuthAppID             = "oauth_app_id"
+	SessionPropMattermostAppID        = "mattermost_app_id"
+	SessionTypeUserAccessToken        = "UserAccessToken"
+	SessionTypeCloudKey               = "CloudKey"
+	SessionTypeRemoteclusterToken     = "RemoteClusterToken"
+	SessionPropIsGuest                = "is_guest"
+	SessionActivityTimeout            = 1000 * 60 * 5  // 5 minutes
+	SessionUserAccessTokenExpiryHours = 100 * 365 * 24 // 100 years
+)
+
+//msgp:tuple StringMap
+type StringMap map[string]string
+
+// Session contains the user session details.
+// This struct's serializer methods are auto-generated. If a new field is added/removed,
+// please run make gen-serialized.
+//
+//msgp:tuple Session
+type Session struct {
+	Id             string        `json:"id"`
+	Token          string        `json:"token"`
+	CreateAt       int64         `json:"create_at"`
+	ExpiresAt      int64         `json:"expires_at"`
+	LastActivityAt int64         `json:"last_activity_at"`
+	UserId         string        `json:"user_id"`
+	DeviceId       string        `json:"device_id"`
+	Roles          string        `json:"roles"`
+	IsOAuth        bool          `json:"is_oauth"`
+	ExpiredNotify  bool          `json:"expired_notify"`
+	Props          StringMap     `json:"props"`
+	TeamMembers    []*TeamMember `json:"team_members" db:"-"`
+	Local          bool          `json:"local" db:"-"`
+}
+
+func (s *Session) Auditable() map[string]interface{} {
+	return map[string]interface{}{
+		"id":               s.Id,
+		"create_at":        s.CreateAt,
+		"expires_at":       s.ExpiresAt,
+		"last_activity_at": s.LastActivityAt,
+		"user_id":          s.UserId,
+		"device_id":        s.DeviceId,
+		"roles":            s.Roles,
+		"is_oauth":         s.IsOAuth,
+		"expired_notify":   s.ExpiredNotify,
+		"local":            s.Local,
+	}
+}
+
+// Returns true if the session is unrestricted, which should grant it
+// with all permissions. This is used for local mode sessions
+func (s *Session) IsUnrestricted() bool {
+	return s.Local
+}
+
+func (s *Session) DeepCopy() *Session {
+	copySession := *s
+
+	if s.Props != nil {
+		copySession.Props = CopyStringMap(s.Props)
+	}
+
+	if s.TeamMembers != nil {
+		copySession.TeamMembers = make([]*TeamMember, len(s.TeamMembers))
+		for index, tm := range s.TeamMembers {
+			copySession.TeamMembers[index] = new(TeamMember)
+			*copySession.TeamMembers[index] = *tm
+		}
+	}
+
+	return &copySession
+}
+
+func (s *Session) IsValid() *AppError {
+	if !IsValidId(s.Id) {
+		return NewAppError("Session.IsValid", "model.session.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !IsValidId(s.UserId) {
+		return NewAppError("Session.IsValid", "model.session.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if s.CreateAt == 0 {
+		return NewAppError("Session.IsValid", "model.session.is_valid.create_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(s.Roles) > UserRolesMaxLength {
+		return NewAppError("Session.IsValid", "model.session.is_valid.roles_limit.app_error",
+			map[string]any{"Limit": UserRolesMaxLength}, "session_id="+s.Id, http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (s *Session) PreSave() {
+	if s.Id == "" {
+		s.Id = NewId()
+	}
+
+	if s.Token == "" {
+		s.Token = NewId()
+	}
+
+	s.CreateAt = GetMillis()
+	s.LastActivityAt = s.CreateAt
+
+	if s.Props == nil {
+		s.Props = make(map[string]string)
+	}
+}
+
+func (s *Session) Sanitize() {
+	s.Token = ""
+}
+
+func (s *Session) IsExpired() bool {
+
+	if s.ExpiresAt <= 0 {
+		return false
+	}
+
+	if GetMillis() > s.ExpiresAt {
+		return true
+	}
+
+	return false
+}
+
+func (s *Session) AddProp(key string, value string) {
+
+	if s.Props == nil {
+		s.Props = make(map[string]string)
+	}
+
+	s.Props[key] = value
+}
+
+func (s *Session) GetTeamByTeamId(teamId string) *TeamMember {
+	for _, tm := range s.TeamMembers {
+		if tm.TeamId == teamId {
+			return tm
+		}
+	}
+
+	return nil
+}
+
+func (s *Session) IsMobileApp() bool {
+	return s.DeviceId != "" || s.IsMobile()
+}
+
+func (s *Session) IsMobile() bool {
+	val, ok := s.Props[UserAuthServiceIsMobile]
+	if !ok {
+		return false
+	}
+	isMobile, err := strconv.ParseBool(val)
+	if err != nil {
+		mlog.Debug("Error parsing boolean property from Session", mlog.Err(err))
+		return false
+	}
+	return isMobile
+}
+
+func (s *Session) IsSaml() bool {
+	val, ok := s.Props[UserAuthServiceIsSaml]
+	if !ok {
+		return false
+	}
+	isSaml, err := strconv.ParseBool(val)
+	if err != nil {
+		mlog.Debug("Error parsing boolean property from Session", mlog.Err(err))
+		return false
+	}
+	return isSaml
+}
+
+func (s *Session) IsOAuthUser() bool {
+	val, ok := s.Props[UserAuthServiceIsOAuth]
+	if !ok {
+		return false
+	}
+	isOAuthUser, err := strconv.ParseBool(val)
+	if err != nil {
+		mlog.Debug("Error parsing boolean property from Session", mlog.Err(err))
+		return false
+	}
+	return isOAuthUser
+}
+
+func (s *Session) IsSSOLogin() bool {
+	return s.IsOAuthUser() || s.IsSaml()
+}
+
+func (s *Session) GetUserRoles() []string {
+	return strings.Fields(s.Roles)
+}
+
+func (s *Session) GenerateCSRF() string {
+	token := NewId()
+	s.AddProp("csrf", token)
+	return token
+}
+
+func (s *Session) GetCSRF() string {
+	if s.Props == nil {
+		return ""
+	}
+
+	return s.Props["csrf"]
+}
+
+func (s *Session) CreateAt_() float64 {
+	return float64(s.CreateAt)
+}
+
+func (s *Session) ExpiresAt_() float64 {
+	return float64(s.ExpiresAt)
+}
+
+func (s *Session) LastActivityAt_() float64 {
+	return float64(s.LastActivityAt)
+}