start checksums

coreutils.txt

@@ -41,7 +41,7 @@ link
 ln
 *logname
 *ls
-md5sum
+*md5sum
 *mkdir
 mkfifo
 mknod
@@ -64,11 +64,11 @@ readlink
 rmdir
 runcon
 seq
-sha1sum
-sha224sum
-sha256sum
-sha384sum
-sha512sum
+*sha1sum
+*sha224sum
+*sha256sum
+*sha384sum
+*sha512sum
 shred
 shuf
 *sleep

md5sum/md5sum.go

@@ -0,0 +1,141 @@
+//
+// md5sum.go (go-coreutils) 0.1
+// Copyright (C) 2014, The GO-Coreutils Developers.
+//
+// Written By: Abram C. Isola
+//
+package main
+
+import "bufio"
+import "crypto/md5"
+import "flag"
+import "fmt"
+import "io"
+import "io/ioutil"
+import "os"
+import "strings"
+
+const (
+	help_text string = `
+    Usage: md5sum [OPTION] [FILE]...
+       or: md5sum [OPTION] --check [FILE]...
+
+    Print or check md5 checksums.
+    If FILE is not given or is -, read standard input.
+
+        --help        display this help and exit
+        --version     output version information and exit
+
+        -c, --check   check md5 sums against given list
+
+    The sums are computed as described in RFC 1321. When checking, the input
+    should be a former output of this program. The default mode is to print
+    a line with a checksum, a character indicating type ('*' for binary, ' ' for
+    text), and name for each FILE.
+    `
+	version_text = `
+    md5sum (go-coreutils) 0.1
+
+    Copyright (C) 2014, The GO-Coreutils Developers.
+    This program comes with ABSOLUTELY NO WARRANTY; for details see
+    LICENSE. This is free software, and you are welcome to redistribute
+    it under certain conditions in LICENSE.
+`
+)
+
+func main() {
+	help := flag.Bool("help", false, help_text)
+	version := flag.Bool("version", false, version_text)
+	check := flag.Bool("check", false, "check md5 sums against given list")
+	check1 := flag.Bool("c", false, "check md5 sums against given list")
+	flag.Parse()
+
+	if *help {
+		fmt.Println(help_text)
+		os.Exit(0)
+	}
+
+	if *version {
+		fmt.Println(version_text)
+		os.Exit(0)
+	}
+
+	// If you are NOT checking...
+	if !*check && !*check1 {
+		if flag.NArg() > 0 {
+			for _, file := range flag.Args() {
+				buff, err := ioutil.ReadFile(file)
+				if err != nil {
+					fmt.Printf("md5sum: cannot read '%s': %s\n", file, err)
+				}
+				fmt.Printf("%x %s\n", md5.Sum(buff), file)
+			}
+		} else {
+			buff, err := ioutil.ReadAll(os.Stdin)
+			if err != nil {
+				fmt.Printf("md5sum: cannot read 'STDIN': %s\n", err)
+			}
+			fmt.Printf("%x -\n", md5.Sum(buff))
+		}
+
+		// Check the files...
+	} else {
+		if flag.NArg() > 0 {
+			NUMFAILED := 0
+			for _, file := range flag.Args() {
+				fp, err := os.Open(file)
+				if err != nil {
+					fmt.Printf("md5sum: cannot read '%s': %s\n", file, err)
+				}
+				// Set up new reader
+				bf := bufio.NewReader(fp)
+
+				// loop through lines
+				for {
+					// get info
+					line, isPrefix, err := bf.ReadLine()
+
+					// is if EOF?
+					if err == io.EOF {
+						break
+					}
+					// another ERR?
+					if err != nil {
+						fmt.Printf("md5sum: cannot read '%s': %s\n", file, err)
+					}
+					// is the line WAY too long?
+					if isPrefix {
+						fmt.Printf("md5sum: unexpected long line: %s\n", file)
+					}
+
+					// success. check the hash
+					hashfile := strings.Split(string(line), " ")
+					HASH := string(hashfile[0])
+					HFIL := string(hashfile[1])
+					buff, err := ioutil.ReadFile(HFIL)
+					if err != nil {
+						fmt.Printf("md5sum: cannot read '%s': %s\n", HFIL, err)
+					}
+					if HASH == fmt.Sprintf("%x", md5.Sum(buff)) {
+						fmt.Printf("%s: OK\n", HFIL)
+					} else {
+						fmt.Printf("%s: FAILED\n", HFIL)
+						NUMFAILED += 1
+					}
+				}
+			}
+			// Print how many TOTAL failed...
+			if NUMFAILED > 0 {
+				fmt.Printf("md5sum: WARNING: %d computed checksum did NOT match\n", NUMFAILED)
+			}
+
+		} /* TODO: Implement this section...
+		 else {
+			buff, err := ioutil.ReadAll(os.Stdin)
+			if err != nil {
+				fmt.Printf("md5sum: cannot read 'STDIN': %s", err)
+			}
+			fmt.Printf("%x -\n", md5.Sum(buff))
+		} */
+	}
+}

sha1sum/sha1sum.go

@@ -0,0 +1,141 @@
+//
+// sha1sum.go (go-coreutils) 0.1
+// Copyright (C) 2014, The GO-Coreutils Developers.
+//
+// Written By: Abram C. Isola
+//
+package main
+
+import "bufio"
+import "crypto/sha1"
+import "flag"
+import "fmt"
+import "io"
+import "io/ioutil"
+import "os"
+import "strings"
+
+const (
+	help_text string = `
+    Usage: sha1sum [OPTION] [FILE]...
+       or: sha1sum [OPTION] --check [FILE]...
+
+    Print or check sha1 checksums.
+    If FILE is not given or is -, read standard input.
+
+        --help        display this help and exit
+        --version     output version information and exit
+
+        -c, --check   check sha1 sums against given list
+
+    The sums are computed as described in RFC 1321. When checking, the input
+    should be a former output of this program. The default mode is to print
+    a line with a checksum, a character indicating type ('*' for binary, ' ' for
+    text), and name for each FILE.
+    `
+	version_text = `
+    sha1sum (go-coreutils) 0.1
+
+    Copyright (C) 2014, The GO-Coreutils Developers.
+    This program comes with ABSOLUTELY NO WARRANTY; for details see
+    LICENSE. This is free software, and you are welcome to redistribute
+    it under certain conditions in LICENSE.
+`
+)
+
+func main() {
+	help := flag.Bool("help", false, help_text)
+	version := flag.Bool("version", false, version_text)
+	check := flag.Bool("check", false, "check sha1 sums against given list")
+	check1 := flag.Bool("c", false, "check sha1 sums against given list")
+	flag.Parse()
+
+	if *help {
+		fmt.Println(help_text)
+		os.Exit(0)
+	}
+
+	if *version {
+		fmt.Println(version_text)
+		os.Exit(0)
+	}
+
+	// If you are NOT checking...
+	if !*check && !*check1 {
+		if flag.NArg() > 0 {
+			for _, file := range flag.Args() {
+				buff, err := ioutil.ReadFile(file)
+				if err != nil {
+					fmt.Printf("sha1sum: cannot read '%s': %s\n", file, err)
+				}
+				fmt.Printf("%x %s\n", sha1.Sum(buff), file)
+			}
+		} else {
+			buff, err := ioutil.ReadAll(os.Stdin)
+			if err != nil {
+				fmt.Printf("sha1sum: cannot read 'STDIN': %s\n", err)
+			}
+			fmt.Printf("%x -\n", sha1.Sum(buff))
+		}
+
+		// Check the files...
+	} else {
+		if flag.NArg() > 0 {
+			NUMFAILED := 0
+			for _, file := range flag.Args() {
+				fp, err := os.Open(file)
+				if err != nil {
+					fmt.Printf("sha1sum: cannot read '%s': %s\n", file, err)
+				}
+				// Set up new reader
+				bf := bufio.NewReader(fp)
+
+				// loop through lines
+				for {
+					// get info
+					line, isPrefix, err := bf.ReadLine()
+
+					// is if EOF?
+					if err == io.EOF {
+						break
+					}
+					// another ERR?
+					if err != nil {
+						fmt.Printf("sha1sum: cannot read '%s': %s\n", file, err)
+					}
+					// is the line WAY too long?
+					if isPrefix {
+						fmt.Printf("sha1sum: unexpected long line: %s\n", file)
+					}
+
+					// success. check the hash
+					hashfile := strings.Split(string(line), " ")
+					HASH := string(hashfile[0])
+					HFIL := string(hashfile[1])
+					buff, err := ioutil.ReadFile(HFIL)
+					if err != nil {
+						fmt.Printf("sha1sum: cannot read '%s': %s\n", HFIL, err)
+					}
+					if HASH == fmt.Sprintf("%x", sha1.Sum(buff)) {
+						fmt.Printf("%s: OK\n", HFIL)
+					} else {
+						fmt.Printf("%s: FAILED\n", HFIL)
+						NUMFAILED += 1
+					}
+				}
+			}
+			// Print how many TOTAL failed...
+			if NUMFAILED > 0 {
+				fmt.Printf("sha1sum: WARNING: %d computed checksum did NOT match\n", NUMFAILED)
+			}
+
+		} /* TODO: Implement this section...
+		 else {
+			buff, err := ioutil.ReadAll(os.Stdin)
+			if err != nil {
+				fmt.Printf("sha1sum: cannot read 'STDIN': %s", err)
+			}
+			fmt.Printf("%x -\n", sha1.Sum(buff))
+		} */
+	}
+}