From d00cc1a298f30e22b299e8521ad4bbc00253ac3a Mon Sep 17 00:00:00 2001
From: Jaco Kroon <jaco@uls.co.za>
Date: Mon, 23 Sep 2024 22:28:44 +0200
Subject: [PATCH] Export remote_number into REMOTENUMBER environment variable.

---
 pppd/auth.c | 1 +
 pppd/main.c | 2 ++
 pppd/pppd.8 | 6 ++++++
 3 files changed, 9 insertions(+)

diff --git a/pppd/auth.c b/pppd/auth.c
index aabab177..f69492ea 100644
--- a/pppd/auth.c
+++ b/pppd/auth.c
@@ -492,6 +492,7 @@ ppp_set_remote_number(const char *buf)
 {
     if (buf) {
         strlcpy(remote_number, buf, sizeof(remote_number));
+        ppp_script_setenv("REMOTENUMBER", remote_number, 0);
     }
 }
 
diff --git a/pppd/main.c b/pppd/main.c
index 7f73e0da..051bac82 100644
--- a/pppd/main.c
+++ b/pppd/main.c
@@ -852,6 +852,8 @@ set_ifunit(int iskey)
 	create_pidfile(getpid());	/* write pid to file */
 	create_linkpidfile(getpid());
     }
+    if (*remote_number)
+        ppp_script_setenv("REMOTENUMBER", remote_number, 0);
     run_net_script(path_net_init, 1);
 }
 
diff --git a/pppd/pppd.8 b/pppd/pppd.8
index c028c22c..3279e4b9 100644
--- a/pppd/pppd.8
+++ b/pppd/pppd.8
@@ -1780,6 +1780,12 @@ set when IPV6CP has come up.
 The authenticated name of the peer.  This is only set if the peer
 authenticates itself.
 .TP
+.B REMOTENUMBER
+The remote's number as provided to pppd by the remotenumber option.  The
+meaning of this varies based on the type of connection, xl2tpd for example can
+either provide the dialing number AVP or the remote's IP address.  pppoe-server
+typically provides the MAC address.
+.TP
 .B SPEED
 The baud rate of the tty device.
 .TP