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-rw-r--r--src/config.c84
1 files changed, 52 insertions, 32 deletions
diff --git a/src/config.c b/src/config.c
index c19501f..3e42f38 100644
--- a/src/config.c
+++ b/src/config.c
@@ -329,35 +329,53 @@ static void count_peers(fastd_context *ctx, fastd_config *conf) {
#define OPTIONS \
- OPTION(usage, "\t--help | -h\n\t\tShows this help text", "--help", "-h") \
- OPTION(version, "\t--version | -v\n\t\tShows the fastd version", "--version", "-v") \
- OPTION_ARG(option_log_level, "\t--log-level error|warn|info|verbose|debug\n\t\tSets the log level; default is info", "--log-level") \
- OPTION_ARG(option_config, "\t--config | -c <filename>\n\t\tLoads a config file", "--config", "-c") \
- OPTION_ARG(option_config_peer, "\t--config-peer <filename>\n\t\tLoads a config file for a single peer", "--config-peer") \
- OPTION_ARG(option_config_peer_dir, "\t--config-peer-dir <dir>\n\t\tLoads all files from a directory as peer configs", "--config-peer-dir") \
- OPTION_ARG(option_mode, "\t--mode | -m tap|tun\n\t\tSets the mode of the interface", "--mode", "-m") \
- OPTION_ARG(option_interface, "\t--interface | -i <name>\n\t\tSets the name of the TUN/TAP interface to use", "--interface", "-i") \
- OPTION_ARG(option_mtu, "\t--mtu | -M <mtu>\n\t\tSets the MTU; must be at least 576", "--mtu", "-M") \
- OPTION_ARG(option_bind, "\t--bind | -b <address>:<port>\n\t\tSets the bind address", "--bind", "-b") \
- OPTION_ARG(option_protocol, "\t--protocol | -p <protocol>\n\t\tSets the protocol", "--protocol", "-p") \
- OPTION_ARG(option_method, "\t--method <method>\n\t\tSets the encryption method", "--method") \
- OPTION(option_forward, "\t--forward\n\t\tEnables forwarding of packets between clients; read the documentation before use!", "--forward") \
- OPTION_ARG(option_on_up, "\t--on-up <command>\n\t\tSets a shell command to execute after interface creation", "--on-up") \
- OPTION_ARG(option_on_down, "\t--on-down <command>\n\t\tSets a shell command to execute before interface destruction", "--on-down") \
- OPTION_ARG(option_on_establish, "\t--on-establish <command>\n\t\tSets a shell command to execute when a new connection is established", "--on-establish") \
- OPTION_ARG(option_on_disestablish, "\t--on-disestablish <command>\n\t\tSets a shell command to execute when a connection is lost", "--on-disestablish") \
- OPTION(option_generate_key, "\t--generate-key\n\t\tGenerates a new keypair", "--generate-key")
+ OPTION(usage, "--help" OR "-h", "Shows this help text") \
+ OPTION(version, "--version" OR "-v", "Shows the fastd version") \
+ OPTION_ARG(option_log_level, "--log-level", "error|warn|info|verbose|debug", "Sets the log level; default is info") \
+ OPTION_ARG(option_config, "--config" OR "-c", "<filename>", "Loads a config file") \
+ OPTION_ARG(option_config_peer, "--config-peer", "<filename>", "Loads a config file for a single peer") \
+ OPTION_ARG(option_config_peer_dir, "--config-peer-dir", "<dir>", "Loads all files from a directory as peer configs") \
+ OPTION_ARG(option_mode, "--mode" OR "-m", "tap|tun", "Sets the mode of the interface") \
+ OPTION_ARG(option_interface, "--interface" OR "-i", "<name>", "Sets the name of the TUN/TAP interface to use") \
+ OPTION_ARG(option_mtu, "--mtu" OR "-M", "<mtu>", "Sets the MTU; must be at least 576") \
+ OPTION_ARG(option_bind, "--bind" OR "-b", "<address>:<port>", "Sets the bind address") \
+ OPTION_ARG(option_protocol, "--protocol" OR "-p", "<protocol>", "Sets the protocol") \
+ OPTION_ARG(option_method, "--method", "<method>", "Sets the encryption method") \
+ OPTION(option_forward, "--forward", "Enables forwarding of packets between clients; read the documentation before use!") \
+ OPTION_ARG(option_on_up, "--on-up", "<command>", "Sets a shell command to execute after interface creation") \
+ OPTION_ARG(option_on_down, "--on-down", "<command>", "Sets a shell command to execute before interface destruction") \
+ OPTION_ARG(option_on_establish, "--on-establish", "<command>", "Sets a shell command to execute when a new connection is established") \
+ OPTION_ARG(option_on_disestablish, "--on-disestablish", "<command>", "Sets a shell command to execute when a connection is lost") \
+ OPTION(option_generate_key, "--generate-key", "Generates a new keypair")
+
+
+static void print_usage(const char *options, const char *message) {
+ /* 28 spaces */
+ static const char spaces[] = " ";
+
+ int len = strlen(options);
+
+ printf("%s", options);
+
+ if (len < 28)
+ printf("%s", spaces+len);
+ else
+ printf("\n%s", spaces);
+ puts(message);
+}
static void usage(fastd_context *ctx, fastd_config *conf) {
-#define OPTION(func, message, args...) puts("\n" message);
-#define OPTION_ARG(func, message, args...) puts("\n" message);
+#define OR ", "
+#define OPTION(func, options, message) print_usage(" " options, message);
+#define OPTION_ARG(func, options, arg, message) print_usage(" " options " " arg, message);
- puts("fastd (Fast and Secure Tunneling Daemon) version " FASTD_VERSION " usage:");
+ puts("fastd (Fast and Secure Tunneling Daemon) version " FASTD_VERSION " usage:\n");
OPTIONS
exit(0);
+#undef OR
#undef OPTION
#undef OPTION_ARG
}
@@ -538,19 +556,20 @@ static void option_generate_key(fastd_context *ctx, fastd_config *conf) {
void fastd_configure(fastd_context *ctx, fastd_config *conf, int argc, char *const argv[]) {
-#define OPTION(func, message, args...) \
- if(config_match(argv[i], args, NULL)) { \
- i++; \
- func(ctx, conf); \
- continue; \
+#define OR ,
+#define OPTION(func, options, message) \
+ if(config_match(argv[i], options, NULL)) { \
+ i++; \
+ func(ctx, conf); \
+ continue; \
}
-#define OPTION_ARG(func, message, args...) \
- if(config_match(argv[i], args, NULL)) { \
- i+=2; \
- if (i > argc) \
+#define OPTION_ARG(func, options, arg, message) \
+ if(config_match(argv[i], options, NULL)) { \
+ i+=2; \
+ if (i > argc) \
exit_error(ctx, "config error: option `%s' needs an argument; see --help for usage", argv[i-2]); \
- func(ctx, conf, argv[i-1]); \
- continue; \
+ func(ctx, conf, argv[i-1]); \
+ continue; \
}
default_config(conf);
@@ -580,6 +599,7 @@ void fastd_configure(fastd_context *ctx, fastd_config *conf, int argc, char *con
count_peers(ctx, conf);
+#undef OR
#undef OPTION
#undef OPTION_ARG
}