web

package
v1.16.0 Latest Latest
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 Go to latest Published: Mar 2, 2019 License: MIT Imports: 44 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, that is 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"
)
View Source 
const (
	SessionCookieName = "yagpdb-session"
)

Variables

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
)
View Source 
var ErrNotLoggedIn = errors.New("Not logged in")
View Source 
var ErrTokenExpired = errors.New("OAUTH2 Token expired")
View Source 
var (
	GAID = os.Getenv("YAGPDB_GA_ID")
)

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 AuthTokenFromB64 

func AuthTokenFromB64(b64 string) (t *oauth2.Token, err error)

AuthTokenFromB64 Retrives an oauth2 token from the base64 string Returns an error if expired

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 added in v1.15.1 

func BaseURL() string

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 added in v1.6.0 

func ContextGuild(ctx context.Context) *discordgo.Guild

func ContextMember added in v1.15.1 

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

func ContextUser added in v1.6.0 

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{}, logMsg string) 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) *log.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 FormParserMW 

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

Parses a form

func GenSessionCookie 

func GenSessionCookie() *http.Cookie

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 HasPermissionCTX 

func HasPermissionCTX(ctx context.Context, perms int) bool

func InitOauth 

func InitOauth()

func IsAcceptingRequests 

func IsAcceptingRequests() bool

func IsAdminRequest added in v1.6.0 

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

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

func IsRequestPartial added in v1.6.0 

func IsRequestPartial(ctx context.Context) bool

func LoadAd added in v0.29.1 

func LoadAd()

func LoadTemplates 

func LoadTemplates()

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 NewPublicError 

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

func ParamOrEmpty added in v1.14.0 

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 RequireFullGuildMW 

func RequireFullGuildMW(inner http.Handler) http.Handler

RequireFullGuildMW puts the "gull" guild in the context, and ensures its available during the request, i say "full" because it doesn't include channels

func RequireGuildChannelsMiddleware 

func RequireGuildChannelsMiddleware(inner http.Handler) http.Handler

RequireGuildChannelsMiddleware ensures that the channels are available for the guild were on during this request, and yes this has to be done seperately cause discord

func RequirePermMW 

func RequirePermMW(perms ...int) 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 added in v1.15.1 

func SetGuildMemberMiddleware(inner http.Handler) http.Handler

func SimpleConfigSaverHandler 

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

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

func SkipStaticMW added in v1.15.1 

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 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 []*discordgo.Channel, allowEmpty bool) error

func ValidateFloatField 

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

func ValidateForm 

func ValidateForm(guild *discordgo.Guild, tmpl TemplateData, form interface{}) bool

Probably needs some cleaning up

func ValidateIntField 

func ValidateIntField(i int64, tags *ValidationTag, guild *discordgo.Guild) (keep bool, err error)

func ValidateIntMinMaxField 

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

func ValidateIntSliceField added in v0.29.1 

func ValidateIntSliceField(is []int64, tags *ValidationTag, guild *discordgo.Guild) (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 *discordgo.Guild) (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 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 CustomHandlerFunc 

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

type CustomValidator added in v1.14.0 

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

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 PublicError 

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

func (*PublicError) Error 

func (p *PublicError) Error() string

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) (*discordgo.Guild, TemplateData)

Returns base context data for control panel plugins

func GetCreateTemplateData 

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

func HandleLandingPage 

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

func HandleReconnectShard 

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

func HandleStatus 

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

func (TemplateData) AddAlerts 

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

func (TemplateData) Alerts added in v1.6.0 

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)

Source Files

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Directories

Path Synopsis
Simple blog
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