commit 4cc0cd5d121e6f1278aa4f5149ff1e94b220d872
author roman <xjanot04@stud.fit.vutbr.cz> Fri Apr 14 09:12:29 2023 +0200
committer Michal Vasko <mvasko@cesnet.cz> Fri Nov 03 15:03:11 2023 +0100
tree 2c886969dbd294441404e1867a64b2bdaa79882d
parent a08a05f1055f666dc73b9bffd3937b0b699fbab9

server ssh UPDATE print more informative err msg

src/session_server_ssh.c

diff --git a/src/session_server_ssh.c b/src/session_server_ssh.c
index c6b744d..34db658 100644
--- a/src/session_server_ssh.c
+++ b/src/session_server_ssh.c
@@ -1859,6 +1859,7 @@
     struct nc_server_ssh_opts *opts;
     int rc = 1, r;
     struct timespec ts_timeout;
+    const char *err_msg;
 
     opts = session->data;
 
@@ -1909,7 +1910,11 @@
         rc = 0;
         goto cleanup;
     } else if (r != SSH_OK) {
-        ERR(session, "SSH key exchange error (%s).", ssh_get_error(session->ti.libssh.session));
+        err_msg = ssh_get_error(session->ti.libssh.session);
+        if (err_msg[0] == '\0') {
+            err_msg = "hostkey algorithm generated from the hostkey most likely not found in the set of configured hostkey algorithms";
+        }
+        ERR(session, "SSH key exchange error (%s).", err_msg);
         rc = -1;
         goto cleanup;
     }