[wiki] [sites] [slstatus] Add leakedip patch || Matvey

From: <git_AT_suckless.org>
Date: Thu, 05 Jan 2023 02:16:39 +0100

commit 7fddff3e66001954bf3c829a384b0d7cc368d1d0
Author: Matvey <mathway.home_AT_gmail.com>
Date: Thu Jan 5 04:16:27 2023 +0300

    [slstatus] Add leakedip patch

diff --git a/tools.suckless.org/slstatus/patches/leakedip/index.md b/tools.suckless.org/slstatus/patches/leakedip/index.md
new file mode 100644
index 00000000..6881f8c0
--- /dev/null
+++ b/tools.suckless.org/slstatus/patches/leakedip/index.md
_AT_@ -0,0 +1,20 @@
+leakedip
+====
+
+Description
+-----------
+This patch adds a new function - `leaked_ip`, which prints a public IP address that an Internet server sees when a user contacts it.
+
+The function works by querying a third party service, namely *ip-api.com*, to return back the IP address seen in a query packet. It's different from builtin `ipv4` and `ipv6` functions, whose work is just showing IP addresses bound to a local interface, which often differs from the identity seen by the Internet.
+
+Note also that by default `ip-api.com` limits the rate of queries to **45** by the time of writing the patch, so the variable `interval` probably should be adjusted accordingly.
+
+**CAUTION!!!** Queries are sent unencrypted through `HTTP` protocol, because this service states that a user need to pay money for the benefit of *SSL* encryption.
+
+Download
+--------
+ * [slstatus-leakedip-20230105-c919def.diff](slstatus-leakedip-20230105-c919def.diff)
+
+Authors
+-------
+ * Matvey Kiselyov <mathway.home_AT_gmail.com>
diff --git a/tools.suckless.org/slstatus/patches/leakedip/slstatus-leakedip-20230105-c919def.diff b/tools.suckless.org/slstatus/patches/leakedip/slstatus-leakedip-20230105-c919def.diff
new file mode 100644
index 00000000..1bfe7253
--- /dev/null
+++ b/tools.suckless.org/slstatus/patches/leakedip/slstatus-leakedip-20230105-c919def.diff
_AT_@ -0,0 +1,139 @@
+From 82914c53f777c3d69bb593a0108c6326f61a6d86 Mon Sep 17 00:00:00 2001
+From: Matvey <mathway.home_AT_gmail.com>
+Date: Thu, 5 Jan 2023 03:34:23 +0300
+Subject: [PATCH] added leaked_ip function - ip as seen by internet
+
+---
+ components/ip.c | 80 +++++++++++++++++++++++++++++++++++++++++++++++--
+ config.def.h | 1 +
+ slstatus.h | 1 +
+ 3 files changed, 80 insertions(+), 2 deletions(-)
+
+diff --git a/components/ip.c b/components/ip.c
+index 9476549..bed3003 100644
+--- a/components/ip.c
++++ b/components/ip.c
+_AT_@ -1,4 +1,6 @@
+ /* See LICENSE file for copyright and license details. */
++#include <errno.h>
++#include <unistd.h>
+ #include <ifaddrs.h>
+ #include <netdb.h>
+ #include <stdio.h>
+_AT_@ -27,9 +29,9 @@ ip(const char *interface, unsigned short sa_family)
+ }
+
+ for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
+- if (!ifa->ifa_addr)
++ if (!ifa->ifa_addr) {
+ continue;
+-
++ }
+ s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in6),
+ host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
+ if (!strcmp(ifa->ifa_name, interface) &&
+_AT_@ -59,3 +61,77 @@ ipv6(const char *interface)
+ {
+ return ip(interface, AF_INET6);
+ }
++
++const char *
++leaked_ip(void)
++{
++ static const char *check_domain = "ip-api.com";
++ static const char *check_request =
++ "GET /line/?fields=query,country HTTP/1.1
"
++ "Host: ip-api.com

";
++ static const char *bad_addr = "X.X.X.X(Unavailable)";
++
++ struct addrinfo *ai;
++ int remote_fd;
++ char *p;
++ int s, n;
++ int gai_errno;
++
++ if ((gai_errno = getaddrinfo(check_domain, "http", NULL, &ai)))
++ {
++ warn("Can't resolve domain %s: %s", check_domain, gai_strerror(gai_errno));
++ return bad_addr;
++ }
++ if ((remote_fd = socket(ai->ai_family, ai->ai_socktype, 0)) == -1)
++ {
++ freeaddrinfo(ai);
++ warn("socket:");
++ return bad_addr;
++ }
++
++ if (connect(remote_fd, ai->ai_addr, ai->ai_addrlen) == -1)
++ {
++ freeaddrinfo(ai);
++ close(remote_fd);
++ warn("connect:", check_domain);
++ return bad_addr;
++ }
++ freeaddrinfo(ai);
++
++ // send request
++ n = strlen(check_request);
++ p = (char *) check_request;
++ while (n)
++ {
++ s = write(remote_fd, p, n);
++
++ if (s == -1)
++ {
++ if (errno == EINTR)
++ continue;
++ close(remote_fd);
++ warn("write:");
++ return bad_addr;
++ }
++ n -= s;
++ p += s;
++ }
++
++ p = buf;
++ n = sizeof(buf);
++ s = read(remote_fd, p, n);
++ close(remote_fd);
++ p = strstr(buf, "

");
++ if (!p)
++ {
++ warn("Can't resolve %s: Bad response from server", check_domain);
++ return bad_addr;
++ }
++ p += 4;
++ sscanf(p, "%*s%s", buf);
++ strcat(buf, "(");
++ sscanf(p, "%s", buf+strlen(buf));
++ strcat(buf, ")");
++
++ return buf;
++}
+diff --git a/config.def.h b/config.def.h
+index d805331..75c282b 100644
+--- a/config.def.h
++++ b/config.def.h
+_AT_@ -31,6 +31,7 @@ static const char unknown_str[] = "n/a";
+ * hostname hostname NULL
+ * ipv4 IPv4 address interface name (eth0)
+ * ipv6 IPv6 address interface name (eth0)
++ * leaked_ip IP address leaked to Internet NULL
+ * kernel_release `uname -r` NULL
+ * keyboard_indicators caps/num lock indicators format string (c?n?)
+ * see keyboard_indicators.c
+diff --git a/slstatus.h b/slstatus.h
+index 8ef5874..6f67ccd 100644
+--- a/slstatus.h
++++ b/slstatus.h
+_AT_@ -30,6 +30,7 @@ const char *hostname(const char *unused);
+ /* ip */
+ const char *ipv4(const char *interface);
+ const char *ipv6(const char *interface);
++const char *leaked_ip(void);
+
+ /* kernel_release */
+ const char *kernel_release(const char *unused);
+--
+2.35.1
+
Received on Thu Jan 05 2023 - 02:16:39 CET