Fix "Hostname" parsing in OpenSSH config files, as reported
at <https://red.libssh.org/issues/260>.

From: Niels Ole Salscheider <niels_ole@salscheider-online.de>
Date: Mon, 8 May 2017 17:36:13 +0200
Subject: [PATCH] Fix reading of the first parameter

This is a fixup for 7b8b5eb4eac314a3a29be812bef0264c6611f6e7.
Previously, it would return as long as the parameter was _not_ seen
before. It also did not handle the case for the unsupported opcode (-1)
which would cause a segfault when accessing the "seen" array.
---
 src/config.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/config.c b/src/config.c
index 7c03b27..238a655 100644
--- a/src/config.c
+++ b/src/config.c
@@ -218,8 +218,9 @@ static int ssh_config_parse_line(ssh_session session, const char *line,
   }
 
   opcode = ssh_config_get_opcode(keyword);
-  if (*parsing == 1 && opcode != SOC_HOST) {
-      if (seen[opcode] == 0) {
+  if (*parsing == 1 && opcode != SOC_HOST &&
+      opcode > SOC_UNSUPPORTED && opcode < SOC_END) {
+      if (seen[opcode] == 1) {
           return 0;
       }
       seen[opcode] = 1;
fac2e24ac926f155d76e42aa90690467'>refs</a><a class='active' href='/guix/log/gnu/tests/monitoring.scm'>log</a><a href='/guix/tree/gnu/tests/monitoring.scm?id=8bea1e05fac2e24ac926f155d76e42aa90690467'>tree</a><a href='/guix/commit/gnu/tests/monitoring.scm?id=8bea1e05fac2e24ac926f155d76e42aa90690467'>commit</a><a href='/guix/diff/gnu/tests/monitoring.scm?id=8bea1e05fac2e24ac926f155d76e42aa90690467'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/tests/monitoring.scm'>
<input type='hidden' name='id' value='8bea1e05fac2e24ac926f155d76e42aa90690467'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=8bea1e05fac2e24ac926f155d76e42aa90690467'>root</a>/<a href='/guix/log/gnu?id=8bea1e05fac2e24ac926f155d76e42aa90690467'>gnu</a>/<a href='/guix/log/gnu/tests?id=8bea1e05fac2e24ac926f155d76e42aa90690467'>tests</a>/<a href='/guix/log/gnu/tests/monitoring.scm?id=8bea1e05fac2e24ac926f155d76e42aa90690467'>monitoring.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/tests/monitoring.scm?id=8bea1e05fac2e24ac926f155d76e42aa90690467&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-08-11 02:00:00 +0200'>2024-08-11</span></td><td><a href='/guix/commit/gnu/tests/monitoring.scm?id=902b15b24d6ea2a1e255b88dff7670e8a95cb9a9'>gnu: Replace (almost) all uses of /run/setuid-programs.</a><span class='msg-avail'>...<span class='msg-tooltip'>…those good for master, anyway.

* gnu/packages/admin.scm (ktsuss, opendoas, hosts)
[arguments]: Replace /run/setuid-programs with /run/privileged/bin.
* gnu/packages/containers.scm (slirp4netns)[arguments]: Likewise.
* gnu/packages/debian.scm (pbuilder)[arguments]: Likewise.
* gnu/packages/disk.scm (udevil)[arguments]: Likewise.
* gnu/packages/enlightenment.scm (efl, enlightenment)
[arguments]: Likewise.
* gnu/packages/gnome.scm (gdm, gnome-control-center)
[arguments]: Likewise.
* gnu/packages/linux.scm (singularity)[arguments]: Likewise.
* gnu/packages/lxde.scm (spacefm)[arguments]: Likewise.
* gnu/packages/monitoring.scm (zabbix-agentd)[arguments]: Likewise.
* gnu/packages/virtualization.scm (ganeti)[arguments]: Likewise.
* gnu/packages/xdisorg.scm (xsecurelock)[arguments]: Likewise.
* gnu/services/dbus.scm (dbus-configuration-directory): Likewise.
* gnu/services/ganeti.scm (%default-ganeti-environment-variables):
Likewise.
* gnu/services/monitoring.scm (zabbix-agent-shepherd-service): Likewise.
* gnu/tests/ldap.scm (marionette): Likewise.
* gnu/tests/monitoring.scm (os): Likewise.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>