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contrib/esim-qrcode.py: Small command line tool to encode eSIM QR codes

Change-Id: I7983de79937124cc258efd459c51f812f5fa79cb
---
A contrib/esim-qrcode-gen.py
1 file changed, 48 insertions(+), 0 deletions(-)

diff --git a/contrib/esim-qrcode-gen.py b/contrib/esim-qrcode-gen.py
new file mode 100755
index 0000000..b680252
--- /dev/null
+++ b/contrib/esim-qrcode-gen.py
@@ -0,0 +1,48 @@
+#!/usr/bin/env python3
+
+# Small command line utility program to encode eSIM QR-Codes
+
+# (C) 2024 by Harald Welte <laforge@osmocom.org>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import sys
+import argparse
+
+from pySim.esim import ActivationCode
+
+
+option_parser = argparse.ArgumentParser(description="""
+eSIM QR code generator. Will encode the given hostname + activation code
+into the eSIM RSP String format as specified in SGP.22 Section 4.1.  If
+a PNG output file is specified, it will also generate a QR code.""")
+option_parser.add_argument('hostname', help='FQDN of SM-DP+')
+option_parser.add_argument('token', help='MatchingID / Token')
+option_parser.add_argument('--oid', help='SM-DP+ OID in CERT.DPauth.ECDSA')
+option_parser.add_argument('--confirmation-code-required', action='store_true',
+                           help='Whether a Confirmation Code is required')
+option_parser.add_argument('--png', help='Output PNG file name (no PNG is written if omitted)')
+
+
+
+if __name__ == '__main__':
+    opts = option_parser.parse_args()
+
+    ac = ActivationCode(opts.hostname, opts.token, opts.oid, opts.confirmation_code_required)
+    print(ac.to_string())
+    if opts.png:
+        with open(opts.png, 'wb') as f:
+            img = ac.to_qrcode()
+            img.save(f)
+            print("# generated QR code stored to '%s'" % (opts.png))

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