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authorflu0r1ne <flu0r1ne@flu0r1ne.net>2023-08-25 19:05:30 -0500
committerflu0r1ne <flu0r1ne@flu0r1ne.net>2023-08-25 19:05:30 -0500
commit84ba3607bf4b87e2f872e960c957d7d860acd83d (patch)
treea4d5e92b2b88edd9c325ada62bf6d60948459529 /src/wg2nd.hpp
parent2f0a9c87bd5acd8fc0852f599599d031cde44bbe (diff)
downloadwg2nd-84ba3607bf4b87e2f872e960c957d7d860acd83d.tar.xz
wg2nd-84ba3607bf4b87e2f872e960c957d7d860acd83d.zip
Rename project wg2sd -> wg2nd, new CLI + generate
1. Renamed the project from wg2sd to wg2nd 2. Modified the _gen_netdev_cfg() function to handle the MTUBytes field. 3. Add new CLI with `generate` and `install` commands 4. Modified the gen_systemd_config() function to accept keyfile_or_output_path and filename parameters. - user can choose the name of the keyfile on the CLI - user can choose alternative output filename (instead of just using the interface name)
Diffstat (limited to 'src/wg2nd.hpp')
-rw-r--r--src/wg2nd.hpp147
1 files changed, 147 insertions, 0 deletions
diff --git a/src/wg2nd.hpp b/src/wg2nd.hpp
new file mode 100644
index 0000000..7bf7f54
--- /dev/null
+++ b/src/wg2nd.hpp
@@ -0,0 +1,147 @@
+#pragma once
+
+#include <istream>
+#include <exception>
+#include <optional>
+#include <string>
+#include <vector>
+#include <filesystem>
+
+#include <cstdint>
+
+namespace wg2nd {
+
+ struct Interface {
+ // File name, or defaults to "wg"
+ std::string name;
+ // Address=...
+ // List of ip addresses to be assigned to the interface
+ std::vector<std::string> addresses;
+ // PrivateKey=...
+ // Base64-encoded private key string
+ std::string private_key;
+ // MTu=..
+ std::string mtu;
+ // DNS=...
+ // DNS consists of a comma-separated list of IP addresses of DNS servers
+ std::vector<std::string> DNS;
+ // Table=...
+ // By default, wireguard creates routes. This is disabled, when Table=off
+ bool should_create_routes;
+ // Table number (if specific), 0 if auto
+ uint32_t table;
+ // ListenPort=...
+ // The port number on which the interface will listen
+ std::optional<uint16_t> listen_port;
+ // PreUp, PostUp, PreDown PostDown
+ std::string preup, postup, predown, postdown;
+ // SaveConfig
+ std::string save_config;
+
+ Interface()
+ : should_create_routes { false }
+ , table { 0 }
+ , listen_port { }
+ { }
+ };
+
+ struct Cidr {
+ std::string route;
+ bool is_default_route;
+ bool is_ipv4;
+ };
+
+ struct Peer {
+ // Endpoint=...
+ // IP and port of the peer
+ std::string endpoint;
+ // PublicKey=...
+ std::string public_key;
+ // AllowedIPs=...
+ // Comma separated list of allowed ips
+ // Each allowed ip is a CIDR block
+ std::vector<Cidr> allowed_ips;
+ // PersistentAlive=...
+ std::string persistent_keepalive;
+ // PresharedKey=...
+ std::string preshared_key;
+ };
+
+ struct Config {
+ // [Interface]
+ Interface intf;
+ // [Peer]
+ std::vector<Peer> peers;
+ // If one of the peers has a default route
+ bool has_default_route;
+
+ Config()
+ : has_default_route { false }
+ { }
+ };
+
+ class ConfigurationException : public std::exception {
+
+ public:
+
+ ConfigurationException(std::string const & message)
+ : _message { message }
+ {}
+
+ char const * what() const noexcept override {
+ return _message.c_str();
+ }
+
+ private:
+ std::string _message;
+ };
+
+ class ParsingException : public ConfigurationException {
+
+ public:
+
+ ParsingException(std::string const & message, std::optional<uint64_t> line_no = {})
+ : ConfigurationException(message)
+ , _line_no { line_no }
+ {}
+
+
+ std::optional<uint64_t> line_no() const noexcept {
+ return _line_no;
+ }
+
+ private:
+ std::string _message;
+ std::optional<uint64_t> _line_no;
+ };
+
+ struct SystemdFilespec {
+ std::string name;
+ std::string contents;
+ };
+
+ struct SystemdConfig {
+ SystemdFilespec netdev;
+ SystemdFilespec network;
+ SystemdFilespec private_keyfile;
+ std::vector<SystemdFilespec> symmetric_keyfiles;
+
+ std::vector<std::string> warnings;
+ std::string firewall;
+ };
+
+ std::string interface_name_from_filename(std::filesystem::path config_path);
+
+ Config parse_config(std::string const & interface_name, std::istream & stream);
+
+ SystemdConfig gen_systemd_config(
+ Config const & cfg,
+ std::filesystem::path const & keyfile_or_output_path,
+ std::optional<std::string> const & filename
+ );
+
+ SystemdConfig wg2nd(std::string const & interface_name, std::istream & stream,
+ std::filesystem::path const & keyfile_or_output_path,
+ std::optional<std::string> const & filename);
+
+};