1 files changed, 116 insertions, 0 deletions
diff --git a/nsock/src/nsock_log.c b/nsock/src/nsock_log.c
new file mode 100644
index 0000000..5ef033c
--- /dev/null
+++ b/nsock/src/nsock_log.c
@@ -0,0 +1,116 @@
+/***************************************************************************
+ * nsock_log.c -- nsock logging infrastructure.                            *
+ *                                                                         *
+ ***********************IMPORTANT NSOCK LICENSE TERMS***********************
+ *
+ * The nsock parallel socket event library is (C) 1999-2023 Nmap Software LLC
+ * This library is free software; you may redistribute and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation; Version 2. This guarantees your right to use, modify, and
+ * redistribute this software under certain conditions. If this license is
+ * unacceptable to you, Nmap Software LLC may be willing to sell alternative
+ * licenses (contact sales@nmap.com ).
+ *
+ * As a special exception to the GPL terms, Nmap Software LLC grants permission
+ * to link the code of this program with any version of the OpenSSL library
+ * which is distributed under a license identical to that listed in the included
+ * docs/licenses/OpenSSL.txt file, and distribute linked combinations including
+ * the two. You must obey the GNU GPL in all respects for all of the code used
+ * other than OpenSSL. If you modify this file, you may extend this exception to
+ * your version of the file, but you are not obligated to do so.
+ *
+ * If you received these files with a written license agreement stating terms
+ * other than the (GPL) terms above, then that alternative license agreement
+ * takes precedence over this comment.
+ *
+ * Source is provided to this software because we believe users have a right to
+ * know exactly what a program is going to do before they run it. This also
+ * allows you to audit the software for security holes.
+ *
+ * Source code also allows you to port Nmap to new platforms, fix bugs, and add
+ * new features. You are highly encouraged to send your changes to the
+ * dev@nmap.org mailing list for possible incorporation into the main
+ * distribution. By sending these changes to Fyodor or one of the Insecure.Org
+ * development mailing lists, or checking them into the Nmap source code
+ * repository, it is understood (unless you specify otherwise) that you are
+ * offering the Nmap Project (Nmap Software LLC) the unlimited, non-exclusive
+ * right to reuse, modify, and relicense the code. Nmap will always be available
+ * Open Source, but this is important because the inability to relicense code
+ * has caused devastating problems for other Free Software projects (such as KDE
+ * and NASM). We also occasionally relicense the code to third parties as
+ * discussed above. If you wish to specify special license conditions of your
+ * contributions, just say so when you send them.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License v2.0 for more
+ * details (http://www.gnu.org/licenses/gpl-2.0.html).
+ *
+ ***************************************************************************/
+
+/* $Id$ */
+
+
+#define _GNU_SOURCE
+#include <stdio.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "nsock_internal.h"
+#include "nsock_log.h"
+
+static void nsock_stderr_logger(const struct nsock_log_rec *rec);
+
+extern struct timeval nsock_tod;
+
+nsock_loglevel_t    NsockLogLevel = NSOCK_LOG_ERROR;
+nsock_logger_t      NsockLogger   = nsock_stderr_logger;
+
+
+void nsock_set_log_function(nsock_logger_t logger) {
+  if (logger != NULL)
+    NsockLogger = logger;
+  else
+    NsockLogger = nsock_stderr_logger;
+
+  nsock_log_debug("Registered external logging function: %p", NsockLogger);
+}
+
+nsock_loglevel_t nsock_get_loglevel(void) {
+  return NsockLogLevel;
+}
+
+void nsock_set_loglevel(nsock_loglevel_t loglevel) {
+  NsockLogLevel = loglevel;
+  nsock_log_debug("Set log level to %s", nsock_loglevel2str(loglevel));
+}
+
+void nsock_stderr_logger(const struct nsock_log_rec *rec) {
+  fprintf(stderr, "libnsock %s(): %s\n", rec->func, rec->msg);
+}
+
+void __nsock_log_internal(nsock_loglevel_t loglevel, const char *file, int line,
+                          const char *func, const char *format, ...) {
+  struct nsock_log_rec rec;
+  va_list args;
+  int rc;
+
+  va_start(args, format);
+
+  rec.level = loglevel;
+  rec.time = nsock_tod;
+  rec.file = file;
+  rec.line = line;
+  rec.func = func;
+
+  rc = vasprintf(&rec.msg, format, args);
+  if (rc >= 0) {
+    NsockLogger(&rec);
+    free(rec.msg);
+  }
+  va_end(args);
+}
+