Replace strchrnul with possibly 2 calls to strchr (issue #78), update spec

Author: Rob Sanders

libcli.c

@@ -2515,6 +2515,16 @@ int cli_int_unregister_buildmode_command(struct cli_def *cli, const char *comman
   return cli_int_unregister_command_core(cli, command, CLI_BUILDMODE_COMMAND);
 }
 
+// recoded to find first '\v', otherwise first NULL, instead of using GNU extension strchrnul()
+char *local_strchrnul(const char *src, char target)
+{
+  char *found=NULL;
+  if ((found=strchr(src, target))) {
+    return found;
+  }
+  return strchr(src,'\0');
+}
+
 struct cli_command *cli_int_register_buildmode_command(struct cli_def *cli, struct cli_command *parent,
                                                        const char *command,
                                                        int (*callback)(struct cli_def *cli, const char *, char **, int),
@@ -2535,7 +2545,7 @@ struct cli_command *cli_int_register_buildmode_command(struct cli_def *cli, stru
   c->command_type = CLI_BUILDMODE_COMMAND;
   c->privilege = privilege;
   c->mode = mode;
-  if (help && !(c->help = strndup(help, strchrnul(help, '\v') - help))) {
+  if (help && !(c->help = strndup(help, local_strchrnul(help, '\v') - help))) {
     free(c->command);
     free(c);
     return NULL;

libcli.spec

@@ -67,13 +67,17 @@ rm -rf $RPM_BUILD_ROOT
 %defattr(-, root, root)
 
 %changelog
-* Wed Dec 17 2023 Rob Sanders <rsanders@forcepointgov.com> 1.10.8
+* Wed Dec 27 2023 Rob Sanders <rsanders@forcepointgov.com> 1.10.8
+- Replace strchrnul() with possibly 2 calls to strchr() (issue #78)
+
+* Sun Dec 17 2023 Rob Sanders <rsanders@forcepointgov.com> 1.10.8
 - Changed from strcasecmp to strcmp in cli_loop() to do case sensitive comparison for <tab> completion (issue #91)
+
 * Fri Dec 2 2022 Rob Sanders <rsanders@forcepointgov.com> 1.10.8
 - Added regular callback fixes to ensure callback fires every # seconds regardless of input - code provided by github user JereLeppanen initially on 27Apr2022(issue #76)
+
 * Thu Dec 1 2022 Rob Sanders <rsanders@forcepointgov.com> 1.10.8
 - Add backward compatibility for LIBCLI versions numbers (issue #85)
-
 - applied fixes for misspellings on LIBCLI version #defines (issue #75) - fix provided on github by belge-sel on 19Sep2021 
 - Fix for printing (issue #79) where text left in buffer (from call to cli_bufprint for example) is discarded instead of preserved.  Code provided on github by JereLeppanen on 27Apr2021