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![Karmanyaah Malhotra](/assets/img/avatar_default.png)
Use netip.Addr instead of storing addresses as strings. This requires conversions at the database level and in tests, but is more memory efficient otherwise, and facilitates the following. Parse rate limit exemptions as netip.Prefix. This allows storing IP ranges in the exemption list. Regular IP addresses (entered explicitly or resolved from hostnames) are IPV4/32, denoting a range of one address.
147 lines
7.2 KiB
Go
147 lines
7.2 KiB
Go
package server
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import (
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"io/fs"
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"net/netip"
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"time"
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)
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// Defines default config settings (excluding limits, see below)
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const (
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DefaultListenHTTP = ":80"
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DefaultCacheDuration = 12 * time.Hour
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DefaultKeepaliveInterval = 45 * time.Second // Not too frequently to save battery (Android read timeout used to be 77s!)
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DefaultManagerInterval = time.Minute
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DefaultDelayedSenderInterval = 10 * time.Second
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DefaultMinDelay = 10 * time.Second
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DefaultMaxDelay = 3 * 24 * time.Hour
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DefaultFirebaseKeepaliveInterval = 3 * time.Hour // ~control topic (Android), not too frequently to save battery
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DefaultFirebasePollInterval = 20 * time.Minute // ~poll topic (iOS), max. 2-3 times per hour (see docs)
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DefaultFirebaseQuotaExceededPenaltyDuration = 10 * time.Minute // Time that over-users are locked out of Firebase if it returns "quota exceeded"
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)
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// Defines all global and per-visitor limits
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// - message size limit: the max number of bytes for a message
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// - total topic limit: max number of topics overall
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// - various attachment limits
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const (
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DefaultMessageLengthLimit = 4096 // Bytes
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DefaultTotalTopicLimit = 15000
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DefaultAttachmentTotalSizeLimit = int64(5 * 1024 * 1024 * 1024) // 5 GB
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DefaultAttachmentFileSizeLimit = int64(15 * 1024 * 1024) // 15 MB
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DefaultAttachmentExpiryDuration = 3 * time.Hour
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)
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// Defines all per-visitor limits
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// - per visitor subscription limit: max number of subscriptions (active HTTP connections) per per-visitor/IP
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// - per visitor request limit: max number of PUT/GET/.. requests (here: 60 requests bucket, replenished at a rate of one per 5 seconds)
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// - per visitor email limit: max number of emails (here: 16 email bucket, replenished at a rate of one per hour)
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// - per visitor attachment size limit: total per-visitor attachment size in bytes to be stored on the server
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// - per visitor attachment daily bandwidth limit: number of bytes that can be transferred to/from the server
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const (
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DefaultVisitorSubscriptionLimit = 30
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DefaultVisitorRequestLimitBurst = 60
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DefaultVisitorRequestLimitReplenish = 5 * time.Second
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DefaultVisitorEmailLimitBurst = 16
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DefaultVisitorEmailLimitReplenish = time.Hour
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DefaultVisitorAttachmentTotalSizeLimit = 100 * 1024 * 1024 // 100 MB
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DefaultVisitorAttachmentDailyBandwidthLimit = 500 * 1024 * 1024 // 500 MB
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)
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// Config is the main config struct for the application. Use New to instantiate a default config struct.
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type Config struct {
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BaseURL string
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ListenHTTP string
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ListenHTTPS string
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ListenUnix string
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ListenUnixMode fs.FileMode
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KeyFile string
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CertFile string
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FirebaseKeyFile string
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CacheFile string
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CacheDuration time.Duration
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CacheStartupQueries string
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AuthFile string
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AuthDefaultRead bool
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AuthDefaultWrite bool
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AttachmentCacheDir string
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AttachmentTotalSizeLimit int64
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AttachmentFileSizeLimit int64
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AttachmentExpiryDuration time.Duration
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KeepaliveInterval time.Duration
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ManagerInterval time.Duration
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WebRootIsApp bool
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DelayedSenderInterval time.Duration
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FirebaseKeepaliveInterval time.Duration
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FirebasePollInterval time.Duration
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FirebaseQuotaExceededPenaltyDuration time.Duration
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UpstreamBaseURL string
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SMTPSenderAddr string
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SMTPSenderUser string
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SMTPSenderPass string
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SMTPSenderFrom string
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SMTPServerListen string
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SMTPServerDomain string
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SMTPServerAddrPrefix string
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MessageLimit int
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MinDelay time.Duration
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MaxDelay time.Duration
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TotalTopicLimit int
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TotalAttachmentSizeLimit int64
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VisitorSubscriptionLimit int
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VisitorAttachmentTotalSizeLimit int64
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VisitorAttachmentDailyBandwidthLimit int
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VisitorRequestLimitBurst int
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VisitorRequestLimitReplenish time.Duration
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VisitorRequestExemptIPAddrs []netip.Prefix
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VisitorEmailLimitBurst int
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VisitorEmailLimitReplenish time.Duration
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BehindProxy bool
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EnableWeb bool
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Version string // injected by App
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}
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// NewConfig instantiates a default new server config
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func NewConfig() *Config {
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return &Config{
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BaseURL: "",
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ListenHTTP: DefaultListenHTTP,
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ListenHTTPS: "",
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ListenUnix: "",
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ListenUnixMode: 0,
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KeyFile: "",
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CertFile: "",
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FirebaseKeyFile: "",
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CacheFile: "",
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CacheDuration: DefaultCacheDuration,
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AuthFile: "",
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AuthDefaultRead: true,
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AuthDefaultWrite: true,
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AttachmentCacheDir: "",
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AttachmentTotalSizeLimit: DefaultAttachmentTotalSizeLimit,
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AttachmentFileSizeLimit: DefaultAttachmentFileSizeLimit,
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AttachmentExpiryDuration: DefaultAttachmentExpiryDuration,
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KeepaliveInterval: DefaultKeepaliveInterval,
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ManagerInterval: DefaultManagerInterval,
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MessageLimit: DefaultMessageLengthLimit,
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MinDelay: DefaultMinDelay,
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MaxDelay: DefaultMaxDelay,
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DelayedSenderInterval: DefaultDelayedSenderInterval,
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FirebaseKeepaliveInterval: DefaultFirebaseKeepaliveInterval,
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FirebasePollInterval: DefaultFirebasePollInterval,
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FirebaseQuotaExceededPenaltyDuration: DefaultFirebaseQuotaExceededPenaltyDuration,
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TotalTopicLimit: DefaultTotalTopicLimit,
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VisitorSubscriptionLimit: DefaultVisitorSubscriptionLimit,
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VisitorAttachmentTotalSizeLimit: DefaultVisitorAttachmentTotalSizeLimit,
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VisitorAttachmentDailyBandwidthLimit: DefaultVisitorAttachmentDailyBandwidthLimit,
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VisitorRequestLimitBurst: DefaultVisitorRequestLimitBurst,
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VisitorRequestLimitReplenish: DefaultVisitorRequestLimitReplenish,
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VisitorRequestExemptIPAddrs: make([]netip.Prefix, 0),
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VisitorEmailLimitBurst: DefaultVisitorEmailLimitBurst,
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VisitorEmailLimitReplenish: DefaultVisitorEmailLimitReplenish,
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BehindProxy: false,
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EnableWeb: true,
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Version: "",
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}
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}
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