1 files changed, 138 insertions, 0 deletions
diff --git a/log-client.c b/log-client.c
new file mode 100644
index 00000000..1792ba84
--- /dev/null
+++ b/log-client.c
@@ -0,0 +1,138 @@
+/*
+
+log-client.c
+
+Author: Tatu Ylonen <ylo@cs.hut.fi>
+
+Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+                   All rights reserved
+
+Created: Mon Mar 20 21:13:40 1995 ylo
+
+Client-side versions of debug(), log(), etc.  These print to stderr.
+
+*/
+
+#include "includes.h"
+RCSID("$Id: log-client.c,v 1.1 1999/10/27 03:42:44 damien Exp $");
+
+#include "xmalloc.h"
+#include "ssh.h"
+
+static int log_debug = 0;
+static int log_quiet = 0;
+
+void log_init(char *av0, int on_stderr, int debug, int quiet,
+	      SyslogFacility facility)
+{
+  log_debug = debug;
+  log_quiet = quiet;
+}
+
+void log(const char *fmt, ...)
+{
+  va_list args;
+
+  if (log_quiet)
+    return;
+  va_start(args, fmt);
+  vfprintf(stderr, fmt, args);
+  fprintf(stderr, "\r\n");
+  va_end(args);
+}
+
+void debug(const char *fmt, ...)
+{
+  va_list args;
+  if (log_quiet || !log_debug)
+    return;
+  va_start(args, fmt);
+  fprintf(stderr, "debug: ");
+  vfprintf(stderr, fmt, args);
+  fprintf(stderr, "\r\n");
+  va_end(args);
+}
+
+void error(const char *fmt, ...)
+{
+  va_list args;
+  if (log_quiet)
+    return;
+  va_start(args, fmt);
+  vfprintf(stderr, fmt, args);
+  fprintf(stderr, "\r\n");
+  va_end(args);
+}
+
+struct fatal_cleanup
+{
+  struct fatal_cleanup *next;
+  void (*proc)(void *);
+  void *context;
+};
+
+static struct fatal_cleanup *fatal_cleanups = NULL;
+
+/* Registers a cleanup function to be called by fatal() before exiting. */
+
+void fatal_add_cleanup(void (*proc)(void *), void *context)
+{
+  struct fatal_cleanup *cu;
+
+  cu = xmalloc(sizeof(*cu));
+  cu->proc = proc;
+  cu->context = context;
+  cu->next = fatal_cleanups;
+  fatal_cleanups = cu;
+}
+
+/* Removes a cleanup frunction to be called at fatal(). */
+
+void fatal_remove_cleanup(void (*proc)(void *context), void *context)
+{
+  struct fatal_cleanup **cup, *cu;
+  
+  for (cup = &fatal_cleanups; *cup; cup = &cu->next)
+    {
+      cu = *cup;
+      if (cu->proc == proc && cu->context == context)
+	{
+	  *cup = cu->next;
+	  xfree(cu);
+	  return;
+	}
+    }
+  fatal("fatal_remove_cleanup: no such cleanup function: 0x%lx 0x%lx\n",
+	(unsigned long)proc, (unsigned long)context);
+}
+
+/* Function to display an error message and exit.  This is in this file because
+   this needs to restore terminal modes before exiting.  See log-client.c
+   for other related functions. */
+
+void fatal(const char *fmt, ...)
+{
+  va_list args;
+  struct fatal_cleanup *cu, *next_cu;
+  static int fatal_called = 0;
+  
+  if (!fatal_called)
+    {
+      fatal_called = 1;
+
+      /* Call cleanup functions. */
+      for (cu = fatal_cleanups; cu; cu = next_cu)
+	{
+	  next_cu = cu->next;
+	  (*cu->proc)(cu->context);
+	}
+    }
+
+  va_start(args, fmt);
+  vfprintf(stderr, fmt, args);
+  fprintf(stderr, "\r\n");
+  va_end(args);
+  exit(255);
+}
+
+/* fatal() is in ssh.c so that it can properly reset terminal modes. */