Add command show

Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>
2018-02-12 22:58:57 +00:00
parent 7548ba2c27
commit 3c2423a38b
8 changed files with 219 additions and 60 deletions
--- a/src/show.c
+++ b/src/show.c
@@ -0,0 +1,99 @@
+#include "common.h"
+#include "ctl.h"
+#include "str.h"
+
+#include <stdio.h>
+#include <sys/socket.h>
+#include <dirent.h>
+#include <sys/un.h>
+
+static int
+gt_show_tunnel(int fd, const char *dev)
+{
+    if (ctl_connect(fd, "/run/" PACKAGE_NAME, dev) == -1) {
+        perror("connect");
+        return -1;
+    }
+
+    struct ctl_msg reply, msg = {
+        .type = CTL_STATUS,
+    };
+
+    if ((send(fd, &msg, sizeof(msg), 0) == -1) ||
+        (recv(fd, &reply, sizeof(reply), 0) == -1)) {
+        perror("send/recv");
+        return -1;
+    }
+
+    if (reply.type != CTL_STATUS_REPLY)
+        return -1;
+
+    if (str_empty(reply.status.addr)) {
+        printf("server %s:\n"
+               "  mtu:       %zu\n"
+               "  auto mtu:  %s\n"
+               "  bind port: %hu\n"
+               "  cipher:    %s\n"
+               "  ipv4:      %s\n"
+               "  ipv6:      %s\n",
+               dev,
+               reply.status.mtu,
+               reply.status.mtu_auto ? "enabled" : "disabled",
+               reply.status.bind_port,
+               reply.status.chacha ? "chacha20poly1305" : "aes256gcm",
+               reply.status.ipv4 ? "enabled" : "disabled",
+               reply.status.ipv6 ? "enabled" : "disabled");
+    } else {
+        printf("client %s:\n"
+               "  host:      %s\n"
+               "  port:      %hu\n"
+               "  mtu:       %zu\n"
+               "  auto mtu:  %s\n"
+               "  bind port: %hu\n"
+               "  cipher:    %s\n"
+               "  ipv4:      %s\n"
+               "  ipv6:      %s\n",
+               dev,
+               reply.status.addr, reply.status.port,
+               reply.status.mtu,
+               reply.status.mtu_auto ? "enabled" : "disabled",
+               reply.status.bind_port,
+               reply.status.chacha ? "chacha20poly1305" : "aes256gcm",
+               reply.status.ipv4 ? "enabled" : "disabled",
+               reply.status.ipv6 ? "enabled" : "disabled");
+    }
+
+    return 0;
+}
+
+int
+gt_show(int argc, char **argv)
+{
+    DIR *dp = opendir("/run/" PACKAGE_NAME);
+
+    if (!dp) {
+        perror("opendir");
+        return 1;
+    }
+
+    struct dirent *d = NULL;
+
+    while (d = readdir(dp), d) {
+        if (d->d_name[0] == '.')
+            continue;
+
+        int fd = ctl_create("/run/" PACKAGE_NAME, NULL);
+
+        if (fd == -1) {
+            perror("ctl_create");
+            return 1;
+        }
+
+        gt_show_tunnel(fd, d->d_name);
+        ctl_delete(fd);
+    }
+
+    closedir(dp);
+
+    return 0;
+}