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Copy pathprocessor.go
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282 lines (228 loc) · 6.71 KB
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Copy pathprocessor.go
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282 lines (228 loc) · 6.71 KB
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// SPDX-License-Identifier: MIT
package processor
import (
"bufio"
"fmt"
"os"
"path/filepath"
"runtime"
"strings"
"sync"
"github.com/gosuri/uiprogress"
)
// Global Version
var Version = "1.5.0 (beta)"
// Verbose enables verbose logging output
var Verbose = false
// VeryVerbose enables verbose logging output
var VeryVerbose = false
// Debug enables debug logging output
var Debug = false
// Trace enables trace logging output which is extremely verbose
var Trace = false
// MTime enable mtime calculation and output
var MTime = false
// Progress uses ui bar to display the progress of files
var Progress = false
// Recursive to walk directories
var Recursive = false
// Do not print out results as they are processed
var NoStream = false
// If data is being piped in using stdin
var StandardInput = false
// Should the application print all hashes it knows about
var Hashes = false
// List of hashes that we want to process
var Hash = []string{}
// Format sets the output format of the formatter
var Format = ""
// FileOutput sets the file that output should be written to
var FileOutput = ""
// AuditFile sets the file that we want to audit against similar to hashdeep
var AuditFile = ""
// DirFilePaths is not set via flags but by arguments following the flags for file or directory to process
var DirFilePaths = []string{}
// FileListQueueSize is the queue of files found and ready to be processed
var FileListQueueSize = 1000
// Number of bytes in a size to enable memory maps or streaming
var StreamSize int64 = 1_000_000
// FileInput indicates we have a file passed in which consists of a
var FileInput = ""
// GitIgnore set false to enable .gitignore checks
var GitIgnore = true
// GitModuleIgnore set false to enable .gitmodules checks
var GitModuleIgnore = true
// Ignore set false to enable ignore file checks
var Ignore = true
// HashIgnore set true to enable hashignore file checks
var HashIgnore = false
// SkipHidden set to false to ignore hidden folders and files
var SkipHidden = true
// PathDenyList sets the paths that should be skipped
var PathDenyList = []string{}
// Exclude is a regular expression which is used to exclude files from being processed
var Exclude = []string{}
var NoThreads = runtime.NumCPU()
// String mapping for hash names
var HashNames = Result{
CRC32: "crc32",
XxHash64: "xxhash64",
MD4: "md4",
MD5: "md5",
SHA1: "sha1",
SHA256: "sha256",
SHA512: "sha512",
Blake2b256: "blake2b256",
Blake2b512: "blake2b512",
Blake3: "blake3",
Sha3224: "sha3224",
Sha3256: "sha3256",
Sha3384: "sha3384",
Sha3512: "sha3512",
Ed2k: "ed2k",
}
// Process is the main entry point of the command line it sets everything up and starts running
func Process() {
// Display the supported hashes then bail out
if Hashes {
printHashes()
return
}
// Check if we are accepting data from stdin
if len(DirFilePaths) == 0 {
stat, _ := os.Stdin.Stat()
if (stat.Mode() & os.ModeCharDevice) == 0 {
StandardInput = true
}
}
// If nothing was supplied as an argument to run against, assume run against everything in the
// current directory recursively
if len(DirFilePaths) == 0 {
DirFilePaths = append(DirFilePaths, ".")
}
// If a single argument is supplied, enable recursive as if it's a file no problem
// but if its a directory the user probably wants to hash everything in that directory
if len(DirFilePaths) == 1 {
Recursive = true
}
// Clean up hashes by setting all input to lowercase
Hash = formatHashInput()
// Where audit file is set we only want to process the hashes that hashdeep supports for this
// NB we will need to expand this in the future when supporting our own format
if AuditFile != "" {
Hash = []string{"md5", "sha256"}
}
// If format is set to hashdeep
if strings.ToLower(Format) == "hashdeep" {
// if hashdeep, we need to ensure md5 is set or sha256, or both, and if neither are set both
if !hasHash("md5") || !hasHash("sha256") {
printError("hashdeep format without supported hash - setting md5 and sha256")
Hash = []string{"md5", "sha256"}
}
}
// Results ready to be printed
fileSummaryQueue := make(chan Result, FileListQueueSize)
if StandardInput {
if MTime {
printError("cannot use --mtime option with standard input, ignoring flag")
}
go processStandardInput(fileSummaryQueue)
} else {
// Files ready to be read from disk
fileListQueue := make(chan string, FileListQueueSize)
if FileInput == "" {
// Spawn routine to start finding files on disk
go func() {
// Check if the paths or files added exist and inform the user if they don't
for _, f := range DirFilePaths {
fp := filepath.Clean(f)
fi, err := os.Stat(fp)
// If there is an error which is usually does not exist then exit non zero
if err != nil {
printError(fmt.Sprintf("file or directory issue: %s %s", fp, err.Error()))
os.Exit(1)
} else {
if fi.IsDir() {
if Recursive {
walkDirectoryWithIgnore(fp, fileListQueue)
}
} else {
fileListQueue <- fp
}
}
}
close(fileListQueue)
}()
} else {
// Open the file
go func() {
file, err := os.Open(FileInput)
if err != nil {
printError(fmt.Sprintf("failed to open input file: %s, %s", FileInput, err.Error()))
os.Exit(1)
}
defer file.Close()
scanner := bufio.NewScanner(file)
// Read the file line by line
for scanner.Scan() {
line := scanner.Text()
fileListQueue <- line
}
close(fileListQueue)
// Check for errors during scanning
if err := scanner.Err(); err != nil {
printError(fmt.Sprintf("error reading input file: %s, %s", FileInput, err.Error()))
os.Exit(1)
}
}()
}
if Progress {
uiprogress.Start() // start rendering of progress bars
}
var wg sync.WaitGroup
for i := 0; i < NoThreads; i++ {
wg.Add(1)
go func() {
fileProcessorWorker(fileListQueue, fileSummaryQueue)
wg.Done()
}()
}
go func() {
wg.Wait()
close(fileSummaryQueue)
}()
}
result, valid := fileSummarize(fileSummaryQueue)
if FileOutput == "" {
fmt.Print(result)
if !valid {
os.Exit(1)
}
} else {
// we don't write out sqlite
if strings.ToLower(Format) != "sqlite" {
_ = os.WriteFile(FileOutput, []byte(result), 0600)
}
fmt.Println("results written to " + FileOutput)
}
}
// ToLower all of the input hashes so we can match them easily
func formatHashInput() []string {
h := []string{}
for _, x := range Hash {
h = append(h, strings.ToLower(x))
}
return h
}
// Check if a hash was supplied to the input so we know if we should calculate it
func hasHash(hash string) bool {
for _, x := range Hash {
if x == "all" {
return true
}
if x == hash {
return true
}
}
return false
}