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version: centralize banner through flags.Banner()

Browse Source 
Before this, 26 tools hardcoded the literal "gopacket vX.Y.Z-beta -
Copyright 2026 Google LLC" banner in print statements, totaling 34
occurrences across the tree. Every version bump meant updating the
same string 34 times.

Switches every tool to call flags.Banner(), which builds the banner
from flags.Version. The Version const in pkg/flags/flags.go is now
the single source of truth; future version bumps are a one-line
change.

Mechanical split:
- 3 common print patterns (fmt.Println, fmt.Fprintln os.Stderr,
  fmt.Fprintf with trailing \n\n) swept with sed.
- 6 heredoc-style flag.Usage functions had the banner line on a
  backtick-quoted format string. Each was split into a separate
  fmt.Fprintln(os.Stderr, flags.Banner()) followed by the existing
  Fprintf with the banner line trimmed off the format string.
- 9 tools needed a new pkg/flags import added.
- tools/describeTicket already imports github.com/jcmturner/gokrb5
  /v8/iana/flags for Kerberos flag constants, so pkg/flags is aliased
  as gopflags there to avoid the name collision.

Verified: go build, go vet, and go test ./pkg/transport/ all clean
under default, CGO_ENABLED=0, and GOOS=windows CGO_ENABLED=0. Spot-
checked -h output on samrdump, rpcmap, mssqlinstance, ping, and
describeTicket; each renders the banner identically to before.
This commit is contained in:
psycep
2026-04-22 13:25:06 -05:00
parent dd189fbad1
commit 9e78779102
26 changed files with 48 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/CheckLDAPStatus/main.go
+1 -1
View File
@@ -39,7 +39,7 @@ var (
func main() {
flag.Usage = func() {
fmt.Fprintln(os.Stderr, "gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintln(os.Stderr)
fmt.Fprintln(os.Stderr, "LDAP signing and channel binding enumeration utility.")
fmt.Fprintln(os.Stderr)
tools/DumpNTLMInfo/main.go
+1 -1
View File
@@ -76,7 +76,7 @@ const EPOCH_DIFF = 116444736000000000
func main() {
flag.Usage = func() {
fmt.Fprintln(os.Stderr, "gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintln(os.Stderr)
fmt.Fprintln(os.Stderr, "Do NTLM authentication and parse information.")
fmt.Fprintln(os.Stderr)
tools/describeTicket/main.go
+2 -1
View File
@@ -31,6 +31,7 @@ import (
"github.com/jcmturner/gokrb5/v8/messages"
"github.com/jcmturner/gokrb5/v8/types"
gopflags "github.com/mandiant/gopacket/pkg/flags"
"github.com/mandiant/gopacket/pkg/kerberos"
)
@@ -966,7 +967,7 @@ func loadCCacheSafe(path string) (ccache *credentials.CCache, err error) {
}
func printUsage() {
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(gopflags.Banner())
fmt.Println()
fmt.Println("Parses a ccache ticket file and displays credential information.")
fmt.Println("With a decryption key, decrypts the ticket and shows the full PAC.")
tools/getArch/main.go
+2 -1
View File
@@ -25,6 +25,7 @@ import (
"github.com/mandiant/gopacket/pkg/dcerpc"
"github.com/mandiant/gopacket/pkg/dcerpc/epmapper"
"github.com/mandiant/gopacket/pkg/dcerpc/header"
"github.com/mandiant/gopacket/pkg/flags"
"github.com/mandiant/gopacket/pkg/transport"
)
@@ -123,7 +124,7 @@ func checkArch(machine string, timeoutSec int) {
}
func printUsage() {
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
fmt.Println("Gets the target system's OS architecture version")
fmt.Println()
tools/karmaSMB/main.go
+1 -1
View File
@@ -275,7 +275,7 @@ var NDR_UUID = []byte{
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "gopacket v0.1.1-beta - Copyright 2026 Google LLC\n\n")
fmt.Fprintf(os.Stderr, "%s\n\n", flags.Banner())
fmt.Fprintf(os.Stderr, "For every file request received, this module will return the pathname\n")
fmt.Fprintf(os.Stderr, "contents based on extension matching.\n\n")
fmt.Fprintf(os.Stderr, "Usage: karmaSMB [options] pathname\n\n")
tools/keylistattack/main.go
+2 -2
View File
@@ -73,8 +73,8 @@ func main() {
}
func usage() {
fmt.Fprintf(os.Stderr, `gopacket v0.1.1-beta - Copyright 2026 Google LLC
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintf(os.Stderr, `
Performs the KERB-KEY-LIST-REQ attack to dump secrets from the remote machine
without executing any agent there.
tools/lookupsid/main.go
+1 -1
View File
@@ -63,7 +63,7 @@ func main() {
}
}
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
fmt.Printf("[*] Brute forcing SIDs at %s\n", target.Host)
tools/mssqlclient/main.go
+1 -1
View File
@@ -42,7 +42,7 @@ func main() {
os.Exit(1)
}
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
// Parse target
tools/mssqlinstance/main.go
+3 -3
View File
@@ -30,8 +30,8 @@ var (
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, `gopacket v0.1.1-beta - Copyright 2026 Google LLC
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintf(os.Stderr, `
SQL Server Browser Protocol discovery tool.
Queries the SQL Server Browser service (UDP 1434) to enumerate SQL Server
@@ -68,7 +68,7 @@ Note: Requires the SQL Server Browser service to be running on the target.
os.Exit(1)
}
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
target := flag.Arg(0)
tools/net/main.go
+2 -2
View File
@@ -111,7 +111,7 @@ func main() {
}
}
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
// Connect via SMB
@@ -196,7 +196,7 @@ func main() {
}
func printUsage() {
fmt.Fprintln(os.Stderr, "gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintln(os.Stderr)
fmt.Fprintln(os.Stderr, "Usage: net [auth-flags] target <command> [command-flags]")
fmt.Fprintln(os.Stderr)
tools/ntfs-read/main.go
+2 -1
View File
@@ -24,6 +24,7 @@ import (
"path/filepath"
"strings"
"github.com/mandiant/gopacket/pkg/flags"
"github.com/mandiant/gopacket/pkg/ntfs"
)
@@ -400,7 +401,7 @@ func cleanPath(path string) string {
}
func printUsage() {
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
fmt.Println("NTFS explorer (read-only)")
fmt.Println()
tools/ping/main.go
+2 -1
View File
@@ -21,6 +21,7 @@ import (
"os"
"time"
"github.com/mandiant/gopacket/pkg/flags"
"golang.org/x/net/icmp"
"golang.org/x/net/ipv4"
)
@@ -32,7 +33,7 @@ const (
func main() {
if len(os.Args) < 3 {
fmt.Fprintf(os.Stderr, "gopacket v0.1.1-beta - Copyright 2026 Google LLC\n\n")
fmt.Fprintf(os.Stderr, "%s\n\n", flags.Banner())
fmt.Fprintf(os.Stderr, "Simple ICMP ping using raw sockets.\n\n")
fmt.Fprintf(os.Stderr, "Usage: %s <src ip> <dst ip>\n", os.Args[0])
fmt.Fprintf(os.Stderr, "\nNote: Requires root/CAP_NET_RAW privileges.\n")
tools/ping6/main.go
+2 -1
View File
@@ -20,6 +20,7 @@ import (
"os"
"time"
"github.com/mandiant/gopacket/pkg/flags"
"golang.org/x/net/icmp"
"golang.org/x/net/ipv6"
)
@@ -30,7 +31,7 @@ const (
)
func main() {
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
if len(os.Args) < 3 {
tools/rbcd/main.go
+2 -2
View File
@@ -30,8 +30,8 @@ import (
)
func printUsage() {
fmt.Fprintf(os.Stderr, `gopacket v0.1.1-beta - Copyright 2026 Google LLC
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintf(os.Stderr, `
usage: rbcd [-h] [-delegate-to DELEGATE_TO] [-delegate-from DELEGATE_FROM]
[-action {read,write,remove,flush}] [-use-ldaps] [-debug] [-ts]
[-hashes LMHASH:NTHASH] [-no-pass] [-k] [-aesKey hex key]
tools/reg/main.go
+2 -2
View File
@@ -107,7 +107,7 @@ func main() {
}
}
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
// Connect via SMB
@@ -192,7 +192,7 @@ func main() {
}
func printUsage() {
fmt.Fprintln(os.Stderr, "gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintln(os.Stderr)
fmt.Fprintln(os.Stderr, "Usage: reg [auth-flags] target <command> [command-flags]")
fmt.Fprintln(os.Stderr)
tools/rpcdump/main.go
+1 -1
View File
@@ -37,7 +37,7 @@ func main() {
os.Exit(1)
}
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
target, creds, err := session.ParseTargetString(opts.TargetStr)
tools/rpcmap/main.go
+3 -3
View File
@@ -90,8 +90,8 @@ type ifaceResult struct {
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, `gopacket v0.1.1-beta - Copyright 2026 Google LLC
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintf(os.Stderr, `
Scans for listening MSRPC interfaces. Tries the MGMT interface first,
falls back to UUID bruteforce if MGMT is not available.
@@ -121,7 +121,7 @@ Examples:
os.Exit(1)
}
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
if *debug {
tools/samrdump/main.go
+1 -1
View File
@@ -55,7 +55,7 @@ func main() {
}
}
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
fmt.Printf("[*] Retrieving endpoint list from %s\n", target.Host)
tools/services/main.go
+2 -2
View File
@@ -100,7 +100,7 @@ func main() {
}
}
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
// Connect via SMB
@@ -390,7 +390,7 @@ func errorControlName(t uint32) string {
}
func printUsage() {
fmt.Fprintln(os.Stderr, "gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintln(os.Stderr)
fmt.Fprintln(os.Stderr, "Usage: services [auth-flags] target <action> [action-flags]")
fmt.Fprintln(os.Stderr)
tools/smbserver/main.go
+1 -1
View File
@@ -366,7 +366,7 @@ func (s *Server) GetShares() []*Share {
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "gopacket v0.1.1-beta - Copyright 2026 Google LLC\n\n")
fmt.Fprintf(os.Stderr, "%s\n\n", flags.Banner())
fmt.Fprintf(os.Stderr, "usage: smbserver [-h] [-comment COMMENT] [-username USERNAME]\n")
fmt.Fprintf(os.Stderr, " [-password PASSWORD] [-hashes LMHASH:NTHASH] [-ts]\n")
fmt.Fprintf(os.Stderr, " [-debug] [-ip INTERFACE_ADDRESS] [-port PORT]\n")
tools/sniff/main.go
+4 -3
View File
@@ -28,6 +28,7 @@ import (
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"github.com/google/gopacket/pcap"
"github.com/mandiant/gopacket/pkg/flags"
)
// Supported datalink types
@@ -43,8 +44,8 @@ var (
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, `gopacket v0.1.1-beta - Copyright 2026 Google LLC
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintf(os.Stderr, `
Simple packet sniffer using pcap.
Usage: %s [options] [BPF filter]
@@ -65,7 +66,7 @@ Note: Requires root/CAP_NET_RAW privileges.
flag.Parse()
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
// List interfaces mode
tools/sniffer/main.go
+2 -1
View File
@@ -25,6 +25,7 @@ import (
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"github.com/mandiant/gopacket/pkg/flags"
)
// Protocol name to number mapping
@@ -40,7 +41,7 @@ var protoMap = map[string]int{
}
func main() {
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
// Default protocols if none specified
tools/split/main.go
+2 -1
View File
@@ -24,6 +24,7 @@ import (
"github.com/google/gopacket/layers"
"github.com/google/gopacket/pcap"
"github.com/google/gopacket/pcapgo"
"github.com/mandiant/gopacket/pkg/flags"
)
// Supported datalink types
@@ -61,7 +62,7 @@ type ConnectionWriter struct {
}
func main() {
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
fmt.Println("[!] This tool is deprecated and may be removed in future versions.")
fmt.Println()
tools/ticketer/main.go
+2 -1
View File
@@ -22,6 +22,7 @@ import (
"strings"
"github.com/mandiant/gopacket/internal/build"
"github.com/mandiant/gopacket/pkg/flags"
"github.com/mandiant/gopacket/pkg/kerberos"
)
@@ -446,7 +447,7 @@ func parseExtraSIDs() []string {
}
func usage() {
fmt.Fprintf(os.Stderr, "gopacket v0.1.1-beta - Copyright 2026 Google LLC\n\n")
fmt.Fprintf(os.Stderr, "%s\n\n", flags.Banner())
fmt.Fprintf(os.Stderr, "Creates Kerberos golden/silver/sapphire tickets based on user options\n\n")
fmt.Fprintf(os.Stderr, "Usage: ticketer [options] <target>\n\n")
fmt.Fprintf(os.Stderr, "Positional:\n")
tools/tstool/main.go
+2 -2
View File
@@ -108,7 +108,7 @@ func main() {
}
}
fmt.Println("gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Println(flags.Banner())
fmt.Println()
// Connect via SMB
@@ -809,7 +809,7 @@ func cmdMsg(smbClient *smb.Client, auth *authContext, sessionID int, title, mess
}
func printUsage() {
fmt.Fprintln(os.Stderr, "gopacket v0.1.1-beta - Copyright 2026 Google LLC")
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintln(os.Stderr)
fmt.Fprintln(os.Stderr, "Usage: tstool [auth-flags] target <action> [action-flags]")
fmt.Fprintln(os.Stderr)
tools/wmipersist/main.go
+2 -2
View File
@@ -59,8 +59,8 @@ var (
)
func printUsage() {
fmt.Fprintf(os.Stderr, `gopacket v0.1.1-beta - Copyright 2026 Google LLC
fmt.Fprintln(os.Stderr, flags.Banner())
fmt.Fprintf(os.Stderr, `
usage: wmipersist [-h] [-debug] [-ts] [-com-version MAJOR_VERSION:MINOR_VERSION]
[-hashes LMHASH:NTHASH] [-no-pass] [-k] [-aesKey hex key]
[-dc-ip ip address]