77 lines
1.9 KiB
Go
77 lines
1.9 KiB
Go
//
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// Copyright (c) 2018 - 2020, Přemysl Eric Janouch <p@janouch.name>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// pdf-simple-sign is a simple PDF signer.
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package main
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import (
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"flag"
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"fmt"
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"io/ioutil"
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"os"
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"janouch.name/pdf-simple-sign/pdf"
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)
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// #include <unistd.h>
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import "C"
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func isatty(fd uintptr) bool { return C.isatty(C.int(fd)) != 0 }
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func die(status int, format string, args ...interface{}) {
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msg := fmt.Sprintf(format+"\n", args...)
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if isatty(os.Stderr.Fd()) {
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msg = "\x1b[0;31m" + msg + "\x1b[m"
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}
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os.Stderr.WriteString(msg)
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os.Exit(status)
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}
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func usage() {
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die(1, "Usage: %s [-h] [-r RESERVATION] INPUT-FILENAME OUTPUT-FILENAME "+
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"PKCS12-PATH PKCS12-PASS", os.Args[0])
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}
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var reservation = flag.Int(
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"r", 4096, "signature reservation as a number of bytes")
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func main() {
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flag.Usage = usage
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flag.Parse()
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if flag.NArg() != 4 {
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usage()
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}
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inputPath, outputPath := flag.Arg(0), flag.Arg(1)
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doc, err := ioutil.ReadFile(inputPath)
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if err != nil {
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die(1, "%s", err)
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}
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p12, err := ioutil.ReadFile(flag.Arg(2))
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if err != nil {
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die(2, "%s", err)
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}
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key, certs, err := pdf.PKCS12Parse(p12, flag.Arg(3))
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if err != nil {
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die(3, "%s", err)
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}
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if doc, err = pdf.Sign(doc, key, certs, *reservation); err != nil {
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die(4, "error: %s", err)
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}
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if err = ioutil.WriteFile(outputPath, doc, 0666); err != nil {
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die(5, "%s", err)
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}
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}
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