First basic gRPC setup:

- Implemented gRPC client and server functionality, as well as mTLS.
- Implemented a basic gRPC protocol and message types.
- Implemented a basic server binary with different commands.
- Added simple documentation.
- Added license information and helper scripts.
- Added scripts for generation of test certificates.

Author: adewes

.gitignore

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+*.pprof
+.*

.scripts/copyright_text.txt

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+IRIS Endpoint-Server (EPS)
+Copyright (C) 2021-{year} The IRIS Endpoint-Server Authors (see AUTHORS.md)
+
+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 <https://www.gnu.org/licenses/>.

.scripts/make_certs.sh

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+#!/bin/bash
+# This script generates test & development certificates. Not for production use!
+
+O="IRIS"
+ST="Berlin"
+L="Berlin"
+C="DE"
+OU="IT"
+CN="Testing-Development"
+# using less than 1024 here will result in a TLS handshake failure
+LEN="1024"
+
+
+openssl genrsa -out rootCA.key ${LEN}
+openssl req -x509 -new -nodes -key rootCA.key -sha256 -days 1024 -out rootCA.crt -subj "/C=${C}/ST=${ST}/L=${L}/O=${O}/OU=${OU}/CN=${CN}"
+
+declare -a certs=("grpc-client" "grpc-server" "jsonrpc-client" "jsonrpc-server")
+
+for cert in "${certs[@]}"
+do
+	echo "Generating and signing certificates for ${cert}...";
+	openssl genrsa -out "${cert}.key" ${LEN};
+	openssl rsa -in "${cert}.key" -pubout -out "${cert}.pub";
+	openssl req -new -sha256 -key "${cert}.key" -subj "/C=${C}/ST=${ST}/L=${L}/O=${O}/OU=${OU}/CN=${cert}" -out "${cert}.csr";
+	openssl x509 -req -in "${cert}.csr" -CA rootCA.crt -CAkey rootCA.key -CAcreateserial -out "${cert}.crt" -days 500 -sha256;
+done

.scripts/make_copyright_headers.py

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+import datetime
+import os
+
+script_dir = os.path.dirname(os.path.abspath(__file__))
+source_dirs = [os.path.dirname(script_dir)]
+context = {}
+
+def read_copyright():
+    with open(os.path.join(script_dir,'copyright_text.txt')) as input_file:
+        return input_file.read().strip()
+
+def format_copyright(text):
+    c = context.copy()
+    c['year'] = datetime.datetime.now().year
+    return "\n".join([("// "+ t).strip() for t in text.format(**c).split("\n")])
+
+def process_file(path, copyright_notice):
+    with open(path) as input:
+        content = input.read()
+    lines = content.split("\n")
+    for line in lines:
+        if line.strip() == "// no-copyright-header":
+            return
+    for i, line in enumerate(lines):
+        if not line.startswith('//'):
+            break
+    if lines[i].strip() == '':
+        i+=1
+    lines = lines[i:]
+    new_content = copyright_notice+"\n\n"+"\n".join(lines)
+    print("Writing {}".format(path))
+    with open(path, 'w') as output:
+        output.write(new_content)
+    
+
+def enumerate_files(dir, extensions=['.go'], exclude=set([])):
+    for file in os.listdir(dir):
+        path = os.path.join(dir, file)
+        if file.startswith('.'):
+            continue
+        if os.path.isdir(path) and file not in exclude:
+            for path in enumerate_files(path):
+                yield path
+        else:
+            for extension in extensions:
+                if file.endswith(extension):
+                    yield path
+if __name__ == '__main__':
+    copyright_notice = format_copyright(read_copyright())
+    for source_dir in source_dirs:
+        for path in enumerate_files(source_dir):
+            process_file(path, copyright_notice)

AUTHORS.md

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+# Authors
+
+This file lists all individual authors that have contributed significant code to this project. This does not necessarly list minor contributors, please refert to the git commit log for a full list of these.
+
+* Andreas Dewes