Add a Go port

It should be roughly at feature parity.
This commit is contained in:
Přemysl Eric Janouch 2018-10-02 23:19:38 +02:00
parent ad239714b0
commit 43ca0e5035
Signed by: p
GPG Key ID: A0420B94F92B9493
3 changed files with 1255 additions and 2 deletions

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@ -2,8 +2,8 @@ pdf-simple-sign
===============
:compact-option:
'pdf-simple-sign' is a simple open source PDF signer intended for documents
generated by Cairo. As such, it currently comes with some restrictions:
'pdf-simple-sign' is a simple PDF signer intended for documents produced by
the Cairo library. As such, it currently comes with some restrictions:
* the document may not have any forms or signatures already, as they will be
overwitten
@ -30,6 +30,10 @@ Runtime dependencies: libcrypto (OpenSSL 1.1 API)
$ cd builddir
$ ninja
In addition to the C++ version, also included is a native Go port:
$ go get janouch.name/pdf-simple-sign/cmd/pdf-simple-sign
Usage
-----

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@ -0,0 +1,72 @@
//
// Copyright (c) 2018, Přemysl Janouch <p@janouch.name>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// pdf-simple-sign is a simple PDF signer.
package main
import (
"flag"
"fmt"
"io/ioutil"
"janouch.name/pdf-simple-sign/pdf"
"os"
)
// #include <unistd.h>
import "C"
func isatty(fd uintptr) bool { return C.isatty(C.int(fd)) != 0 }
func die(status int, format string, args ...interface{}) {
msg := fmt.Sprintf(format+"\n", args...)
if isatty(os.Stderr.Fd()) {
msg = "\x1b[0;31m" + msg + "\x1b[m"
}
os.Stderr.WriteString(msg)
os.Exit(status)
}
func usage() {
die(1, "Usage: %s [-h] INPUT-FILENAME OUTPUT-FILENAME "+
"PKCS12-PATH PKCS12-PASS", os.Args[0])
}
func main() {
flag.Usage = usage
flag.Parse()
if flag.NArg() != 4 {
usage()
}
inputPath, outputPath := flag.Arg(0), flag.Arg(1)
pdfDocument, err := ioutil.ReadFile(inputPath)
if err != nil {
die(1, "%s", err)
}
p12, err := ioutil.ReadFile(flag.Arg(2))
if err != nil {
die(2, "%s", err)
}
key, certs, err := pdf.PKCS12Parse(p12, flag.Arg(3))
if err != nil {
die(3, "%s", err)
}
if pdfDocument, err = pdf.Sign(pdfDocument, key, certs); err != nil {
die(2, "error: %s", err)
}
if err = ioutil.WriteFile(outputPath, pdfDocument, 0666); err != nil {
die(3, "%s", err)
}
}

1177
pdf/pdf.go Normal file

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