Replace CLI arguments with config-file parser and add integration tests

Introduce a reusable key=value config parser (config.h/c) and convert
all three programs to read their settings from config files instead of
positional command-line arguments.  Add example config files in config/
and 6 CTest integration tests covering None/Basic256Sha256/Aes128 with
anonymous and user authentication.  Remove the now-obsolete launch.sh.

1 files changed, 29 insertions, 0 deletions

diff --git a/config/client_find_servers.conf b/config/client_find_servers.conf
new file mode 100644
index 0000000..a9e29c8
--- /dev/null
+++ b/config/client_find_servers.conf
@@ -0,0 +1,29 @@
+# ClientFindServers configuration
+#
+# Keys:
+#   discoveryEndpoint   LDS endpoint URL (e.g. opc.tcp://localhost:4840)
+#   applicationUri      OPC UA application URI
+#   certificate         Path to client certificate (.der)
+#   privateKey          Path to client private key (.der)
+#   securityMode        None, Sign, or SignAndEncrypt
+#   securityPolicy      None, Basic256Sha256, Aes256_Sha256_RsaPss,
+#                       Aes128_Sha256_RsaOaep, or ECC_nistP256
+#   authMode            "anonymous" or "user"
+#   username            Username (required when authMode = user)
+#   password            Password (required when authMode = user)
+#   trustList           Trusted certificate path (repeat for multiple)
+
+discoveryEndpoint = opc.tcp://localhost:4840
+applicationUri = urn:bobink.ClientFindServers
+certificate = certs/ClientFindServers_cert.der
+privateKey = certs/ClientFindServers_key.der
+
+securityMode = SignAndEncrypt
+securityPolicy = Aes128_Sha256_RsaOaep
+
+authMode = user
+username = user
+password = password
+
+trustList = certs/ServerLDS_cert.der
+trustList = certs/ServerRegister_cert.der