shark

package
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 Go to latest Published: Jul 11, 2022 License: MIT Imports: 11 Imported by: 3

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Constants

This section is empty.

Variables

View Source 
var AllowedColumnFormats map[string]PsmlColumnInfo

AllowedColumnFormats is initialized when the cached columns file is read from disk

View Source 
var BuiltInColumnFormats = map[string]PsmlColumnInfo{
	"%q":      PsmlColumnInfo{Field: "%q", Short: "VLAN", Long: "802.1Q VLAN id", Comparator: table.IntCompare{}},
	"%Yt":     PsmlColumnInfo{Field: "%Yt", Short: "Time", Long: "Absolute date, as YYYY-MM-DD, and time", Comparator: table.DateTimeCompare{}},
	"%YDOYt":  PsmlColumnInfo{Field: "%YDOYt", Short: "Time", Long: "Absolute date, as YYYY/DOY, and time", Comparator: table.DateTimeCompare{}},
	"%At":     PsmlColumnInfo{Field: "%At", Short: "Time", Long: "Absolute time", Comparator: table.DateTimeCompare{}},
	"%V":      PsmlColumnInfo{Field: "%V", Short: "VSAN", Long: "Cisco VSAN"},
	"%B":      PsmlColumnInfo{Field: "%B", Short: "Cuml Bytes", Long: "Cumulative Bytes", Comparator: table.IntCompare{}},
	"%Cus":    PsmlColumnInfo{Field: "%Cus", Short: "Custom", Long: "Custom"},
	"%y":      PsmlColumnInfo{Field: "%y", Short: "DCE/RPC", Long: "DCE/RPC call (cn_call_id / dg_seqnum)", Comparator: table.IntCompare{}},
	"%Tt":     PsmlColumnInfo{Field: "%Tt", Short: "Time Delt", Long: "Delta time", Comparator: table.FloatCompare{}},
	"%Gt":     PsmlColumnInfo{Field: "%Gt", Short: "Time Delt", Long: "Delta time displayed", Comparator: table.FloatCompare{}},
	"%rd":     PsmlColumnInfo{Field: "%rd", Short: "Dest", Long: "Dest addr (resolved)"},
	"%ud":     PsmlColumnInfo{Field: "%ud", Short: "Dest", Long: "Dest addr (unresolved)", Comparator: termshark.IPCompare{}},
	"%rD":     PsmlColumnInfo{Field: "%rD", Short: "DPort", Long: "Dest port (resolved)"},
	"%uD":     PsmlColumnInfo{Field: "%uD", Short: "DPort", Long: "Dest port (unresolved)", Comparator: table.IntCompare{}},
	"%d":      PsmlColumnInfo{Field: "%d", Short: "Dest", Long: "Destination address"},
	"%D":      PsmlColumnInfo{Field: "%D", Short: "DPort", Long: "Destination port", Comparator: table.IntCompare{}},
	"%a":      PsmlColumnInfo{Field: "%a", Short: "Expert", Long: "Expert Info Severity"},
	"%I":      PsmlColumnInfo{Field: "%I", Short: "FW-1", Long: "FW-1 monitor if/direction"},
	"%F":      PsmlColumnInfo{Field: "%F", Short: "Freq/Chan", Long: "Frequency/Channel", Comparator: table.IntCompare{}},
	"%hd":     PsmlColumnInfo{Field: "%hd", Short: "DMAC", Long: "Hardware dest addr"},
	"%hs":     PsmlColumnInfo{Field: "%hs", Short: "SMAC", Long: "Hardware src addr"},
	"%rhd":    PsmlColumnInfo{Field: "%rhd", Short: "DMAC", Long: "Hw dest addr (resolved)"},
	"%uhd":    PsmlColumnInfo{Field: "%uhd", Short: "DMAC", Long: "Hw dest addr (unresolved)"},
	"%rhs":    PsmlColumnInfo{Field: "%rhs", Short: "SMAC", Long: "Hw src addr (resolved)"},
	"%uhs":    PsmlColumnInfo{Field: "%uhs", Short: "SMAC", Long: "Hw src addr (unresolved)"},
	"%e":      PsmlColumnInfo{Field: "%e", Short: "RSSI", Long: "IEEE 802.11 RSSI", Comparator: table.FloatCompare{}},
	"%x":      PsmlColumnInfo{Field: "%x", Short: "TX Rate", Long: "IEEE 802.11 TX rate", Comparator: table.FloatCompare{}},
	"%f":      PsmlColumnInfo{Field: "%f", Short: "DSCP", Long: "IP DSCP Value"},
	"%i":      PsmlColumnInfo{Field: "%i", Short: "Info", Long: "Information"},
	"%rnd":    PsmlColumnInfo{Field: "%rnd", Short: "Dest", Long: "Net dest addr (resolved)"},
	"%und":    PsmlColumnInfo{Field: "%und", Short: "Dest", Long: "Net dest addr (unresolved)", Comparator: termshark.IPCompare{}},
	"%rns":    PsmlColumnInfo{Field: "%rns", Short: "Source", Long: "Net src addr (resolved)"},
	"%uns":    PsmlColumnInfo{Field: "%uns", Short: "Source", Long: "Net src addr (unresolved)", Comparator: termshark.IPCompare{}},
	"%nd":     PsmlColumnInfo{Field: "%nd", Short: "Dest", Long: "Network dest addr"},
	"%ns":     PsmlColumnInfo{Field: "%ns", Short: "Dest", Long: "Network src addr"},
	"%m":      PsmlColumnInfo{Field: "%m", Short: "No.", Long: "Number", Comparator: table.IntCompare{}},
	"%L":      PsmlColumnInfo{Field: "%L", Short: "Length", Long: "Packet length (bytes)", Comparator: table.IntCompare{}},
	"%p":      PsmlColumnInfo{Field: "%p", Short: "Proto", Long: "Protocol"},
	"%Rt":     PsmlColumnInfo{Field: "%Rt", Short: "Time", Long: "Relative time", Comparator: table.FloatCompare{}},
	"%s":      PsmlColumnInfo{Field: "%s", Short: "Source", Long: "Source address", Comparator: termshark.IPCompare{}},
	"%S":      PsmlColumnInfo{Field: "%S", Short: "SPort", Long: "Source port", Comparator: table.IntCompare{}},
	"%rs":     PsmlColumnInfo{Field: "%rs", Short: "Source", Long: "Src addr (resolved)"},
	"%us":     PsmlColumnInfo{Field: "%us", Short: "Source", Long: "Src addr (unresolved)", Comparator: termshark.IPCompare{}},
	"%rS":     PsmlColumnInfo{Field: "%rS", Short: "SPort", Long: "Src port (resolved)"},
	"%uS":     PsmlColumnInfo{Field: "%uS", Short: "SPort", Long: "Src port (unresolved)", Comparator: table.IntCompare{}},
	"%E":      PsmlColumnInfo{Field: "%E", Short: "TEI", Long: "TEI", Comparator: table.IntCompare{}},
	"%Yut":    PsmlColumnInfo{Field: "%Yut", Short: "Time", Long: "UTC date, as YYYY-MM-DD, and time", Comparator: table.DateTimeCompare{}},
	"%YDOYut": PsmlColumnInfo{Field: "%YDOYut", Short: "Time", Long: "UTC date, as YYYY/DOY, and time", Comparator: table.DateTimeCompare{}},
	"%Aut":    PsmlColumnInfo{Field: "%Aut", Short: "Time", Long: "UTC time", Comparator: table.DateTimeCompare{}},
	"%t":      PsmlColumnInfo{Field: "%t", Short: "Time", Long: "Time (format as specified)", Comparator: table.DateTimeCompare{}},
}

BuiltInColumnFormats is the list we know of, from tshark as of the end of 2020. I'll keep this up to date over time. The canonical list is retrieved from tshark -G column-formats, then merged with this to add useful short names and comparators.

View Source 
var ColumnsFormatError = fmt.Errorf("The supplied list of columns and names is invalid")
View Source 
var DefaultPsmlColumnSpec = []PsmlColumnSpec{
	PsmlColumnSpec{Field: PsmlField{Token: "%m"}, Name: "No."},
	PsmlColumnSpec{Field: PsmlField{Token: "%t"}, Name: "Time"},
	PsmlColumnSpec{Field: PsmlField{Token: "%s"}, Name: "Source"},
	PsmlColumnSpec{Field: PsmlField{Token: "%d"}, Name: "Dest"},
	PsmlColumnSpec{Field: PsmlField{Token: "%p"}, Name: "Proto"},
	PsmlColumnSpec{Field: PsmlField{Token: "%L"}, Name: "Length"},
	PsmlColumnSpec{Field: PsmlField{Token: "%i"}, Name: "Info"},
}
View Source 
var InvalidCustomColumnError = fmt.Errorf("The custom column is invalid")
View Source 
var TsharkColumnsCacheOldError = fmt.Errorf("The cached tshark columns database is out of date")

Functions

func InitValidColumns 

func InitValidColumns() error

InitValidColumns will run tshark, if necessary, to compute the columns that tshark understands. This is the set of columns the user is allowed to configure. This will block - if it's noticeable I'll make it async. This is called from termshark's main and makes specific assumptions i.e. that it can write to stdout and the user will see it.

Types

type ColumnsFromTshark 

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

The fields field is serialized using gob.

func (*ColumnsFromTshark) InitFromCache 

func (w *ColumnsFromTshark) InitFromCache() error

func (*ColumnsFromTshark) InitNoCache 

func (w *ColumnsFromTshark) InitNoCache() error

type PsmlColumnInfo 

type PsmlColumnInfo struct {
	Field      string
	Short      string
	Long       string
	Comparator table.ICompare
}

func (PsmlColumnInfo) WithLongName 

func (p PsmlColumnInfo) WithLongName(name string) PsmlColumnInfo

type PsmlColumnSpec 

type PsmlColumnSpec struct {
	Name   string
	Field  PsmlField
	Hidden bool
}

func GetPsmlColumnFormat 

func GetPsmlColumnFormat() []PsmlColumnSpec

func GetPsmlColumnFormatCached 

func GetPsmlColumnFormatCached() []PsmlColumnSpec

func GetPsmlColumnFormatFrom 

func GetPsmlColumnFormatFrom(colKey string) []PsmlColumnSpec

type PsmlField 

type PsmlField struct {
	Token      string
	Filter     string
	Occurrence int
}

func (*PsmlField) FromString 

func (p *PsmlField) FromString(s string) error

func (PsmlField) FullString 

func (p PsmlField) FullString() string

func (PsmlField) String 

func (p PsmlField) String() string

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