[PATCH v4 09/12] tools: add framework for shared options
Julian Orth
ju.orth at gmail.com
Sun Oct 7 16:11:36 CEST 2018
---
src/tools/containers.h | 3 +++
src/tools/genkey.c | 3 ++-
src/tools/pubkey.c | 3 ++-
src/tools/set.c | 3 ++-
src/tools/setconf.c | 3 ++-
src/tools/show.c | 3 ++-
src/tools/showconf.c | 3 ++-
src/tools/subcommands.h | 14 ++++++-----
src/tools/wg.c | 56 +++++++++++++++++++++++++++++++++++------
9 files changed, 72 insertions(+), 19 deletions(-)
diff --git a/src/tools/containers.h b/src/tools/containers.h
index 619094e..cd757e4 100644
--- a/src/tools/containers.h
+++ b/src/tools/containers.h
@@ -15,6 +15,9 @@
#include "../uapi/wireguard.h"
+struct wgoptions {
+};
+
struct wgallowedip {
uint16_t family;
union {
diff --git a/src/tools/genkey.c b/src/tools/genkey.c
index e50d64b..d286cc0 100644
--- a/src/tools/genkey.c
+++ b/src/tools/genkey.c
@@ -52,11 +52,12 @@ static inline ssize_t get_random_bytes(uint8_t *out, size_t len)
return ret;
}
-int genkey_main(int argc, char *argv[])
+int genkey_main(int argc, char *argv[], struct wgoptions *options)
{
uint8_t key[WG_KEY_LEN];
char base64[WG_KEY_LEN_BASE64];
struct stat stat;
+ (void)options;
if (argc != 1) {
fprintf(stderr, "Usage: %s %s\n", PROG_NAME, argv[0]);
diff --git a/src/tools/pubkey.c b/src/tools/pubkey.c
index cf8e256..08a3e9a 100644
--- a/src/tools/pubkey.c
+++ b/src/tools/pubkey.c
@@ -11,11 +11,12 @@
#include "encoding.h"
#include "subcommands.h"
-int pubkey_main(int argc, char *argv[])
+int pubkey_main(int argc, char *argv[], struct wgoptions *options)
{
uint8_t key[WG_KEY_LEN];
char base64[WG_KEY_LEN_BASE64];
int trailing_char;
+ (void)options;
if (argc != 1) {
fprintf(stderr, "Usage: %s %s\n", PROG_NAME, argv[0]);
diff --git a/src/tools/set.c b/src/tools/set.c
index 9d84ccd..4e90940 100644
--- a/src/tools/set.c
+++ b/src/tools/set.c
@@ -12,10 +12,11 @@
#include "ipc.h"
#include "subcommands.h"
-int set_main(int argc, char *argv[])
+int set_main(int argc, char *argv[], struct wgoptions *options)
{
struct wgdevice *device = NULL;
int ret = 1;
+ (void)options;
if (argc < 3) {
fprintf(stderr, "Usage: %s %s <interface> [listen-port <port>] [fwmark <mark>] [private-key <file path>] [peer <base64 public key> [remove] [preshared-key <file path>] [endpoint <ip>:<port>] [persistent-keepalive <interval seconds>] [allowed-ips <ip1>/<cidr1>[,<ip2>/<cidr2>]...] ]...\n", PROG_NAME, argv[0]);
diff --git a/src/tools/setconf.c b/src/tools/setconf.c
index 7135e85..8133bdd 100644
--- a/src/tools/setconf.c
+++ b/src/tools/setconf.c
@@ -13,7 +13,7 @@
#include "ipc.h"
#include "subcommands.h"
-int setconf_main(int argc, char *argv[])
+int setconf_main(int argc, char *argv[], struct wgoptions *options)
{
struct wgdevice *device = NULL;
struct config_ctx ctx;
@@ -21,6 +21,7 @@ int setconf_main(int argc, char *argv[])
char *config_buffer = NULL;
size_t config_buffer_len = 0;
int ret = 1;
+ (void)options;
if (argc != 3) {
fprintf(stderr, "Usage: %s %s <interface> <configuration filename>\n", PROG_NAME, argv[0]);
diff --git a/src/tools/show.c b/src/tools/show.c
index b50af2a..1ebe6e2 100644
--- a/src/tools/show.c
+++ b/src/tools/show.c
@@ -377,10 +377,11 @@ static bool ugly_print(struct wgdevice *device, const char *param, bool with_int
return true;
}
-int show_main(int argc, char *argv[])
+int show_main(int argc, char *argv[], struct wgoptions *options)
{
int ret = 0;
+ (void)options;
COMMAND_NAME = argv[0];
if (argc > 3) {
diff --git a/src/tools/showconf.c b/src/tools/showconf.c
index 777e022..1de65b0 100644
--- a/src/tools/showconf.c
+++ b/src/tools/showconf.c
@@ -18,7 +18,7 @@
#include "ipc.h"
#include "subcommands.h"
-int showconf_main(int argc, char *argv[])
+int showconf_main(int argc, char *argv[], struct wgoptions *options)
{
char base64[WG_KEY_LEN_BASE64];
char ip[INET6_ADDRSTRLEN];
@@ -26,6 +26,7 @@ int showconf_main(int argc, char *argv[])
struct wgpeer *peer;
struct wgallowedip *allowedip;
int ret = 1;
+ (void)options;
if (argc != 2) {
fprintf(stderr, "Usage: %s %s <interface>\n", PROG_NAME, argv[0]);
diff --git a/src/tools/subcommands.h b/src/tools/subcommands.h
index 2a7e36e..6707ead 100644
--- a/src/tools/subcommands.h
+++ b/src/tools/subcommands.h
@@ -6,12 +6,14 @@
#ifndef SUBCOMMANDS_H
#define SUBCOMMANDS_H
+#include "containers.h"
+
extern const char *PROG_NAME;
-int show_main(int argc, char *argv[]);
-int showconf_main(int argc, char *argv[]);
-int set_main(int argc, char *argv[]);
-int setconf_main(int argc, char *argv[]);
-int genkey_main(int argc, char *argv[]);
-int pubkey_main(int argc, char *argv[]);
+int show_main(int argc, char *argv[], struct wgoptions *);
+int showconf_main(int argc, char *argv[], struct wgoptions *);
+int set_main(int argc, char *argv[], struct wgoptions *);
+int setconf_main(int argc, char *argv[], struct wgoptions *);
+int genkey_main(int argc, char *argv[], struct wgoptions *);
+int pubkey_main(int argc, char *argv[], struct wgoptions *);
#endif
diff --git a/src/tools/wg.c b/src/tools/wg.c
index 4c24ff0..f70b5c5 100644
--- a/src/tools/wg.c
+++ b/src/tools/wg.c
@@ -6,14 +6,17 @@
#include <stddef.h>
#include <stdio.h>
#include <string.h>
+#include <stdbool.h>
+#include <getopt.h>
#include "subcommands.h"
+#include "containers.h"
const char *PROG_NAME;
static const struct {
const char *subcommand;
- int (*function)(int, char**);
+ int (*function)(int, char**, struct wgoptions *);
const char *description;
} subcommands[] = {
{ "show", show_main, "Shows the current configuration and device information" },
@@ -35,26 +38,65 @@ static void show_usage(FILE *file)
fprintf(file, "You may pass `--help' to any of these subcommands to view usage.\n");
}
+static bool parse_options(int argc, char *argv[], struct wgoptions *options)
+{
+ int ch;
+ struct option opts[] = {
+ {
+ .name = "help",
+ .val = 'h',
+ },
+ {
+ 0
+ }
+ };
+ (void)options;
+
+ setenv("POSIXLY_CORRECT", "", 0);
+
+ while ((ch = getopt_long(argc, argv, "h", opts, NULL)) != -1) {
+ switch (ch) {
+ case '?':
+ return false;
+ case 'h':
+ show_usage(stdout);
+ exit(0);
+ }
+ }
+
+ return true;
+}
+
int main(int argc, char *argv[])
{
+ struct wgoptions options = { };
+
PROG_NAME = argv[0];
- if (argc == 2 && (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help") || !strcmp(argv[1], "help"))) {
+ if (argc == 2 && !strcmp(argv[1], "help")) {
show_usage(stdout);
return 0;
}
- if (argc == 1) {
+ if (!parse_options(argc, argv, &options)) {
+ show_usage(stderr);
+ return 1;
+ }
+
+ argv += optind;
+ argc -= optind;
+
+ if (argc == 0) {
static char *new_argv[] = { "show", NULL };
- return show_main(1, new_argv);
+ return show_main(1, new_argv, &options);
}
for (size_t i = 0; i < sizeof(subcommands) / sizeof(subcommands[0]); ++i) {
- if (!strcmp(argv[1], subcommands[i].subcommand))
- return subcommands[i].function(argc - 1, argv + 1);
+ if (!strcmp(argv[0], subcommands[i].subcommand))
+ return subcommands[i].function(argc, argv, &options);
}
- fprintf(stderr, "Invalid subcommand: `%s'\n", argv[1]);
+ fprintf(stderr, "Invalid subcommand: `%s'\n", argv[0]);
show_usage(stderr);
return 1;
}
--
2.19.0
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