[Buildroot] [git commit branch/2021.05.x] package/nmap: fix ncat on Unix socket

[Buildroot] [git commit branch/2021.05.x] package/nmap: fix ncat on Unix socket

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=7458efcaa144c15315e8ac62ab8b6261863a3763
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2021.05.x

Starting with nmap 7.91, ncat segfaults on an attempt to use it for a
Unix-domain socket (`ncat -U path`). The fix has been committed to nmap
in r38121.

Signed-off-by: Alexey Neyman <stilor@att.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 2f99483a59edc4e0ad9482551b3af2d8f4be1793)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
 package/nmap/0002-ncat-unix-socket.patch | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/package/nmap/0002-ncat-unix-socket.patch b/package/nmap/0002-ncat-unix-socket.patch
new file mode 100644
index 0000000000..b6484ebeea
--- /dev/null
+++ b/package/nmap/0002-ncat-unix-socket.patch
@@ -0,0 +1,30 @@
+ChangeLog:
+
+o [Ncat][GH#2154] Ncat no longer crashes when used with Unix domain sockets.
+
+Backported from: r38121
+
+Signed-off-by: Alexey Neyman <stilor@att.net>
+
+Index: ncat/ncat_main.c
+===================================================================
+--- a/ncat/ncat_main.c	(revision 38120)
++++ b/ncat/ncat_main.c	(revision 38121)
+@@ -846,7 +846,7 @@
+             targetaddrs->addr.un.sun_family = AF_UNIX;
+             strncpy(targetaddrs->addr.un.sun_path, argv[optind], sizeof(targetaddrs->addr.un.sun_path));
+             targetaddrs->addrlen = SUN_LEN(&targetaddrs->addr.un);
+-            o.target = argv[optind];
++            o.sslservername = o.target = argv[optind];
+             optind++;
+         } else
+ #endif
+@@ -865,7 +865,7 @@
+                 targetaddrs->addr.vm.svm_cid = long_cid;
+ 
+                 targetaddrs->addrlen = sizeof(targetaddrs->addr.vm);
+-                o.target = argv[optind];
++                o.sslservername = o.target = argv[optind];
+                 optind++;
+             }
+         } else
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