utils

Documentation

Index

• func AddrIsLocal(addr net.Addr) bool
• func AddrIsUnix(addr net.Addr) bool
• func AddrLookupHostname(addr net.Addr) string
• func AddrToIP(addr net.Addr) net.IP
• func ArgsToStrings(maxLength int, arguments []string, delim string) []string
• func BitsetEmpty(set []uint64) (empty bool)
• func BitsetGet(set []uint64, position uint) bool
• func BitsetInitialize(set []uint64)
• func BitsetSet(set []uint64, position uint, on bool) (changed bool)
• func BitsetUnion(set []uint64, other []uint64)
• func CopyFile(src string, dst string) (err error)
• func ExtractParam(line string) (string, string)
• func GetClientOnlyTags(tags map[string]ircmsg.TagValue) *map[string]ircmsg.TagValue
• func IPString(addr net.Addr) string
• func IsHostname(name string) bool
• func LookupHostname(addr string) string

Functions

func AddrIsLocal

func AddrIsLocal(addr net.Addr) bool

AddrIsLocal returns whether the address is from a trusted local connection (loopback or unix).

func AddrIsUnix

func AddrIsUnix(addr net.Addr) bool

AddrIsUnix returns whether the address is a unix domain socket.

func AddrLookupHostname

func AddrLookupHostname(addr net.Addr) string

AddrLookupHostname returns the hostname (if possible) or address for the given `net.Addr`.

func AddrToIP

func AddrToIP(addr net.Addr) net.IP

AddrToIP returns the IP address for a net.Addr, or nil if it's a unix domain socket.

func ArgsToStrings

func ArgsToStrings(maxLength int, arguments []string, delim string) []string

ArgsToStrings takes the arguments and splits them into a series of strings, each argument separated by delim and each string bounded by maxLength.

func BitsetEmpty

func BitsetEmpty(set []uint64) (empty bool)

BitsetEmpty returns whether the bitset is empty. This has false positives under concurrent modification (i.e., it can return true even though w.r.t. the sequence of atomic modifications, there was no point at which the bitset was completely empty), but that's not how we're using this method.

func BitsetGet

func BitsetGet(set []uint64, position uint) bool

BitsetGet returns whether a given bit of the bitset is set.

func BitsetInitialize

func BitsetInitialize(set []uint64)

BitsetInitialize initializes a bitset.

func BitsetSet

func BitsetSet(set []uint64, position uint, on bool) (changed bool)

BitsetSet sets a given bit of the bitset to 0 or 1, returning whether it changed.

func BitsetUnion

func BitsetUnion(set []uint64, other []uint64)

BitsetUnion modifies `set` to be the union of `set` and `other`. This has race conditions in that we don't necessarily get a single consistent view of `other` across word boundaries.

func CopyFile

func CopyFile(src string, dst string) (err error)

implementation of `cp` (go should really provide this...)

func ExtractParam

func ExtractParam(line string) (string, string)

ExtractParam extracts a parameter from the given string, returning the param and the rest of the string.

func GetClientOnlyTags

func GetClientOnlyTags(tags map[string]ircmsg.TagValue) *map[string]ircmsg.TagValue

GetClientOnlyTags takes a tag map and returns a map containing just the client-only tags from it.

func IPString

func IPString(addr net.Addr) string

IPString returns a simple IP string from the given net.Addr.

func IsHostname

func IsHostname(name string) bool

IsHostname returns whether we consider `name` a valid hostname.

func LookupHostname

func LookupHostname(addr string) string

LookupHostname returns the hostname for `addr` if it has one. Otherwise, just returns `addr`.