web

package
v1.27.0 Latest Latest
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 Go to latest Published: Oct 6, 2021 License: MIT Imports: 57 Imported by: 0

README

Web

This is the core webserver for YAGPDB, it handles general stuff like authentication.

Currently it only uses 2 HTTP methods: GET for everything that does not change state, and POST for everything else.

The web package is responsible for handling all the core features of the web suite for yagpdb, authentication, adding the bot to servers, and the other basic core functionality.

It also houses a small form validation toolkit through struct tags (this is all kinda messy but one day i hope to improve everything and make it a lot cleaner and easy to work with).

Documentation

Index

Constants

View Source 
const (
	AlertDanger  = "danger"
	AlertSuccess = "success"
	AlertInfo    = "info"
	AlertWarning = "warning"
)
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const (
	SidebarCategoryTopLevel = "Top"
	SidebarCategoryFeeds    = "Feeds"
	SidebarCategoryTools    = "Tools"
	SidebarCategoryFun      = "Fun"
	SidebarCategoryCore     = "Core"
)

Variables

View Source 
var (
	SessionCookieName = "yagpdb-session-3"
	OauthConf         *oauth2.Config
)
View Source 
var (
	ErrChannelNotFound = errors.New("channel not found")
	ErrRoleNotFound    = errors.New("role not found")
)
View Source 
var (
	// Core template files
	Templates *template.Template

	Debug              = true // Turns on debug mode
	ListenAddressHTTP  = ":5000"
	ListenAddressHTTPS = ":5001"

	// Muxers
	RootMux           *goji.Mux
	CPMux             *goji.Mux
	ServerPublicMux   *goji.Mux
	ServerPubliAPIMux *goji.Mux

	StartedAt = time.Now()

	CurrentAd *Advertisement

	ConfAdVideos = config.RegisterOption("yagpdb.ad.video_paths", "Comma seperated list of video paths in different formats", "")

	ConfAdsTxt = config.RegisterOption("yagpdb.ads.ads_txt", "Path to the ads.txt file for monetization using ad networks", "")

	// can be overriden by plugins
	// main prurpose is to plug in a onboarding process through a properietary plugin
	SelectServerHomePageHandler http.Handler = RenderHandler(HandleSelectServer, "cp_selectserver")
)
View Source 
var (
	ErrDuplicateToken = errors.New("somehow a duplicate token was found")
)
View Source 
var ErrNotLoggedIn = errors.New("not logged in")
View Source 
var ErrTokenExpired = errors.New("OAUTH2 Token expired")
View Source 
var StaticFilesFS fs.FS = frontend.StaticFiles
View Source 
var WidgetCache = cache.New(time.Second*10, time.Second*10)

Functions

func APIHandler 

func APIHandler(inner CustomHandlerFunc) http.Handler

A helper wrapper that json encodes the returned value

func ActiveServerMW 

func ActiveServerMW(inner http.Handler) http.Handler

Sets the active guild context and template data It will only attempt to fetch full guild if not logged in

func AddGlobalTemplateData 

func AddGlobalTemplateData(key string, data interface{})

func AddHTMLTemplate added in v1.27.0 

func AddHTMLTemplate(name, contents string)

func AddSidebarItem 

func AddSidebarItem(category string, sItem *SidebarItem)

func BaseTemplateDataMiddleware 

func BaseTemplateDataMiddleware(inner http.Handler) http.Handler

Fills the template data in the context with basic data such as clientid and redirects

func BaseURL 

func BaseURL() string

func CSRFProtectionMW 

func CSRFProtectionMW(inner http.Handler) http.Handler

func CheckCSRFToken 

func CheckCSRFToken(token string) (bool, error)

CheckCSRFToken returns true if it matched and false if not, an error if something bad happened

func CheckErr 

func CheckErr(t TemplateData, err error, errMsg string, logger func(...interface{})) bool

Checks and error and logs it aswell as adding it to the alerts returns true if an error occured

func ContextGuild 

func ContextGuild(ctx context.Context) *dstate.GuildSet

func ContextIsAdmin 

func ContextIsAdmin(ctx context.Context) bool

func ContextMember 

func ContextMember(ctx context.Context) *discordgo.Member

func ContextMemberPerms 

func ContextMemberPerms(ctx context.Context) int64

func ContextUser 

func ContextUser(ctx context.Context) *discordgo.User

func ControllerHandler 

func ControllerHandler(f ControllerHandlerFunc, templateName string) http.Handler

Handlers can return templatedata and an erro. If error is not nil and publicerror it will be added as an alert, if error is not a publicerror it will render a error page

func ControllerPostHandler 

func ControllerPostHandler(mainHandler ControllerHandlerFunc, extraHandler http.Handler, formData interface{}) http.Handler

Uses the FormParserMW to parse and validate the form, then saves it

func CreateCSRFToken 

func CreateCSRFToken() (string, error)

CreateCSRFToken creates a csrf token and adds it the list

func CreateCookieSession 

func CreateCookieSession(token *oauth2.Token) (cookie *http.Cookie, err error)

CreateCookieSession creates a session cookie where the value is the access token itself, this way we don't have to store it on our end anywhere.

func CtxLogger 

func CtxLogger(ctx context.Context) *logrus.Entry

CtxLogger Returns an always non nil entry either from the context or standard logger

func DiscordSessionFromContext 

func DiscordSessionFromContext(ctx context.Context) *discordgo.Session

func EnabledDisabledSpanStatus 

func EnabledDisabledSpanStatus(enabled bool) (str string)

func FormParserMW 

func FormParserMW(inner http.Handler, dst interface{}) http.Handler

Parses a form

func GenSessionCookie 

func GenSessionCookie() *http.Cookie

func GetIsReadOnly 

func GetIsReadOnly(ctx context.Context) bool

func GetRequestIP 

func GetRequestIP(r *http.Request) string

func GetUserAccessLevel 

func GetUserAccessLevel(userID int64, g *common.GuildWithConnected, config *models.CoreConfig, roleProvider func(guildID, userID int64) []int64) (hasRead bool, hasWrite bool)

func GetUserGuilds 

func GetUserGuilds(ctx context.Context) ([]*common.GuildWithConnected, error)

func GuildScopeCacheMW 

func GuildScopeCacheMW(plugin common.Plugin, inner http.Handler) http.Handler

Writes the request log into logger, returns a new middleware

func HandleCPLogs 

func HandleCPLogs(w http.ResponseWriter, r *http.Request) interface{}

func HandleChanenlPermissions 

func HandleChanenlPermissions(w http.ResponseWriter, r *http.Request) interface{}

func HandleConfirmLogin 

func HandleConfirmLogin(w http.ResponseWriter, r *http.Request)

func HandleLogin 

func HandleLogin(w http.ResponseWriter, r *http.Request)

func HandleLogout 

func HandleLogout(w http.ResponseWriter, r *http.Request)

func HandleSelectServer 

func HandleSelectServer(w http.ResponseWriter, r *http.Request) interface{}

func HandleStatusJSON 

func HandleStatusJSON(w http.ResponseWriter, r *http.Request) interface{}

HandleStatusJSON handles GET /status.json

func HasAccesstoGuildSettings 

func HasAccesstoGuildSettings(userID int64, g *common.GuildWithConnected, config *models.CoreConfig, roleProvider func(guildID, userID int64) []int64, write bool) bool

HasAccesstoGuildSettings retrusn true if the specified user (or 0 if not logged in or not on the server) has access

func HasPermissionCTX 

func HasPermissionCTX(ctx context.Context, aperms int64) bool

func Indicator 

func Indicator(enabled bool) string

func InitOauth 

func InitOauth()

func IsAcceptingRequests 

func IsAcceptingRequests() bool

func IsAdminRequest 

func IsAdminRequest(ctx context.Context, r *http.Request) (read bool, write bool)

Checks the context if there is a logged in user and if so if he's and admin or not

func IsRequestPartial 

func IsRequestPartial(ctx context.Context) bool

func LoadCoreConfigMiddleware 

func LoadCoreConfigMiddleware(inner http.Handler) http.Handler

LoadCoreConfigMiddleware ensures that the core config is available

func LogIgnoreErr 

func LogIgnoreErr(err error)

func MiscMiddleware 

func MiscMiddleware(inner http.Handler) http.Handler

Misc mw that adds some headers, (Strict-Transport-Security) And discards requests when shutting down And a logger

func NewLogEntryFromContext 

func NewLogEntryFromContext(ctx context.Context, action string, params ...*cplogs.Param) *cplogs.LogEntry

func NewPublicError 

func NewPublicError(a ...interface{}) error

func ParamOrEmpty 

func ParamOrEmpty(r *http.Request, key string) string

func RandBase64 

func RandBase64(size int) string

func RenderHandler 

func RenderHandler(inner CustomHandlerFunc, tmpl string) http.Handler

A helper wrapper that renders a template

func RequestLogger 

func RequestLogger(logger io.Writer) func(http.Handler) http.Handler

Writes the request log into logger, returns a new middleware

func RequireActiveServer 

func RequireActiveServer(inner http.Handler) http.Handler

RequireActiveServer ensures that were accessing a guild specific page, and guild information is available (e.g a valid guild)

func RequireBotMemberMW 

func RequireBotMemberMW(inner http.Handler) http.Handler

RequireBotMemberMW ensures that the bot member for the curreng guild is available, mostly used for checking the bot's roles

func RequireBotOwnerMW 

func RequireBotOwnerMW(inner http.Handler) http.Handler

RequireBotOwnerMW requires the user to be logged in and that they're a bot owner

func RequirePermMW 

func RequirePermMW(perms ...int64) func(http.Handler) http.Handler

func RequireServerAdminMiddleware 

func RequireServerAdminMiddleware(inner http.Handler) http.Handler

RequireServerAdminMiddleware restricts access to guild admins only (or bot admins)

func RequireSessionMiddleware 

func RequireSessionMiddleware(inner http.Handler) http.Handler

RequireSessionMiddleware ensures that a session is available, and otherwise refuse to continue down the chain of handlers Also validates the origin header if present (on POST requests that is)

func Run 

func Run()

func SessionMiddleware 

func SessionMiddleware(inner http.Handler) http.Handler

SessionMiddleware retrieves a session from the request using the session cookie which is actually just a B64 encoded version of the oatuh2 token from discord for the user

func SetContextTemplateData 

func SetContextTemplateData(ctx context.Context, data map[string]interface{}) context.Context

func SetGuildMemberMiddleware 

func SetGuildMemberMiddleware(inner http.Handler) http.Handler

func SimpleConfigSaverHandler 

func SimpleConfigSaverHandler(t SimpleConfigSaver, extraHandler http.Handler, key string) http.Handler

Uses the FormParserMW to parse and validate the form, then saves it

func SkipStaticMW 

func SkipStaticMW(maybeSkip func(http.Handler) http.Handler, alwaysRunSuffixes ...string) func(http.Handler) http.Handler

SkipStaticMW skips the "maybeSkip" handler if this is a static link

func StaticRoleProvider 

func StaticRoleProvider(roles []int64) func(guildID, userID int64) []int64

func Stop 

func Stop()

func UserInfoMiddleware 

func UserInfoMiddleware(inner http.Handler) http.Handler

UserInfoMiddleware fills the context with user information and the guilds it's on guilds if possible

func ValidateChannelField 

func ValidateChannelField(s int64, channels []dstate.ChannelState, allowEmpty bool) error

func ValidateFloatField 

func ValidateFloatField(f float64, min, max float64) error

func ValidateForm 

func ValidateForm(guild *dstate.GuildSet, tmpl TemplateData, form interface{}) bool

Probably needs some cleaning up

func ValidateIntField 

func ValidateIntField(i int64, tags *ValidationTag, guild *dstate.GuildSet, forceAllowEmpty bool) (keep bool, err error)

func ValidateIntMinMaxField 

func ValidateIntMinMaxField(i int64, min, max int64) error

func ValidateIntSliceField 

func ValidateIntSliceField(is []int64, tags *ValidationTag, guild *dstate.GuildSet) (filtered []int64, err error)

func ValidateNormalStringField 

func ValidateNormalStringField(s string, min, max int) error

func ValidateRegexField 

func ValidateRegexField(s string, max int) error

func ValidateRoleField 

func ValidateRoleField(s int64, roles []discordgo.Role, allowEmpty bool) error

func ValidateStringField 

func ValidateStringField(s string, tags *ValidationTag, guild *dstate.GuildSet) (str string, err error)

func ValidateTemplateField 

func ValidateTemplateField(s string, max int) error

func WriteErrorResponse 

func WriteErrorResponse(w http.ResponseWriter, r *http.Request, err string, statusCode int)

Types

type APIError 

type APIError struct {
	Message string
}
type Advertisement struct {
	Path       template.URL
	VideoUrls  []template.URL
	VideoTypes []string
	LinkURL    template.URL
	Width      int
	Height     int
}

type Alert 

type Alert struct {
	Style   string
	Message string
}

func ErrorAlert 

func ErrorAlert(args ...interface{}) *Alert

func SucessAlert 

func SucessAlert(args ...interface{}) *Alert

func WarningAlert 

func WarningAlert(args ...interface{}) *Alert

type BotStatus 

type BotStatus struct {
	// Invidual statuses
	HostStatuses []*HostStatus `json:"host_statuses"`
	NumNodes     int           `json:"num_nodes"`
	TotalShards  int           `json:"total_shards"`

	UnavailableGuilds int   `json:"unavailable_guilds"`
	OfflineShards     []int `json:"offline_shards"`

	EventsPerSecondAverage float64 `json:"events_per_second_average"`
	EventsPerSecondMin     float64 `json:"events_per_second_min"`
	EventsPerSecondMax     float64 `json:"events_per_second_max"`

	UptimeMax time.Duration `json:"uptim_emax"`
	UptimeMin time.Duration `json:"uptime_min"`
}

BotStatus represents the bot's full status

type ControlPanelPlugin 

type ControlPanelPlugin struct{}

func (*ControlPanelPlugin) LoadServerHomeWidget 

func (p *ControlPanelPlugin) LoadServerHomeWidget(w http.ResponseWriter, r *http.Request) (TemplateData, error)

func (*ControlPanelPlugin) PluginInfo 

func (p *ControlPanelPlugin) PluginInfo() *common.PluginInfo

func (*ControlPanelPlugin) ServerHomeWidgetOrder 

func (p *ControlPanelPlugin) ServerHomeWidgetOrder() int

type ControllerHandlerFunc 

type ControllerHandlerFunc func(w http.ResponseWriter, r *http.Request) (TemplateData, error)

type ControllerHandlerFuncJson 

type ControllerHandlerFuncJson func(w http.ResponseWriter, r *http.Request) (interface{}, error)

type CoreConfigPostForm 

type CoreConfigPostForm struct {
	AllowedReadOnlyRoles    []int64 `valid:"role,true"`
	AllowedWriteRoles       []int64 `valid:"role,true"`
	AllowAllMembersReadOnly bool
	AllowNonMembersReadOnly bool
}

type CustomHandlerFunc 

type CustomHandlerFunc func(w http.ResponseWriter, r *http.Request) interface{}

type CustomResponseWriter 

type CustomResponseWriter struct {
	// contains filtered or unexported fields
}

func (*CustomResponseWriter) Header 

func (c *CustomResponseWriter) Header() http.Header

func (*CustomResponseWriter) Write 

func (c *CustomResponseWriter) Write(b []byte) (int, error)

func (*CustomResponseWriter) WriteHeader 

func (c *CustomResponseWriter) WriteHeader(statusCode int)

type CustomValidator 

type CustomValidator interface {
	Validate(tmplData TemplateData) (ok bool)
}

type HostStatus 

type HostStatus struct {
	Name string

	EventsPerSecond float64
	TotalEvents     int64

	Nodes []*botrest.NodeStatus
}

type Plugin 

type Plugin interface {
	common.Plugin

	// Parse the templates and set up the http routes here
	// mainMuxer is the root and cpmuxer handles the /cp/ route
	// the cpmuxer requires a session and to be a admin of the server
	// being managed, otherwise it will redirect to the homepage
	InitWeb()
}

Plugin represents a web plugin

type PluginWithServerHomeWidget 

type PluginWithServerHomeWidget interface {
	LoadServerHomeWidget(w http.ResponseWriter, r *http.Request) (TemplateData, error)
}

type PluginWithServerHomeWidgetMiddlewares 

type PluginWithServerHomeWidgetMiddlewares interface {
	PluginWithServerHomeWidget
	ServerHomeWidgetApplyMiddlewares(inner http.Handler) http.Handler
}

type PublicError 

type PublicError struct {
	// contains filtered or unexported fields
}

func (*PublicError) Error 

func (p *PublicError) Error() string

type RenderedServerHomeWidget 

type RenderedServerHomeWidget struct {
	Body    template.HTML
	Title   template.HTML
	Enabled bool
}

type ServerHomeWidgetWithOrder 

type ServerHomeWidgetWithOrder interface {
	ServerHomeWidgetOrder() int
}

type SidebarItem 

type SidebarItem struct {
	Name            string
	URL             string
	Icon            string
	CustomIconImage string
	New             bool
	External        bool
}

type SimpleConfigSaver 

type SimpleConfigSaver interface {
	Save(guildID int64) error
	Name() string // Returns this config's name, as it will be logged in the server's control panel log
}

type TemplateData 

type TemplateData map[string]interface{}

func GetBaseCPContextData 

func GetBaseCPContextData(ctx context.Context) (*dstate.GuildSet, TemplateData)

Returns base context data for control panel plugins

func GetCreateTemplateData 

func GetCreateTemplateData(ctx context.Context) (context.Context, TemplateData)

func HandleGetManagedGuilds 

func HandleGetManagedGuilds(w http.ResponseWriter, r *http.Request) (TemplateData, error)

func HandleLandingPage 

func HandleLandingPage(w http.ResponseWriter, r *http.Request) (TemplateData, error)

func HandlePostCoreSettings 

func HandlePostCoreSettings(w http.ResponseWriter, r *http.Request) (TemplateData, error)

func HandleReconnectShard 

func HandleReconnectShard(w http.ResponseWriter, r *http.Request) (TemplateData, error)

func HandleServerHome 

func HandleServerHome(w http.ResponseWriter, r *http.Request) (TemplateData, error)

func HandleStatusHTML 

func HandleStatusHTML(w http.ResponseWriter, r *http.Request) (TemplateData, error)

HandleStatusHTML handles GET /status

func (TemplateData) AddAlerts 

func (t TemplateData) AddAlerts(alerts ...*Alert) TemplateData

func (TemplateData) Alerts 

func (t TemplateData) Alerts() []*Alert

type ValidationTag 

type ValidationTag struct {
	// contains filtered or unexported fields
}

func ParseValidationTag 

func ParseValidationTag(tag string) *ValidationTag

func (*ValidationTag) Float 

func (p *ValidationTag) Float(index int) (float64, bool)

func (*ValidationTag) Int 

func (p *ValidationTag) Int(index int) (int, bool)

func (*ValidationTag) Len 

func (p *ValidationTag) Len() int

func (*ValidationTag) Str 

func (p *ValidationTag) Str(index int) (string, bool)

type WidgetCacheItem 

type WidgetCacheItem struct {
	RawResponse []byte
	Header      http.Header
}

Source Files

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Directories

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