source/lib/ldb/common/ldb_debug.c

   1 /*
   2    ldb database library
   3
   4    Copyright (C) Andrew Tridgell  2004
   5
   6      ** NOTE! The following LGPL license applies to the ldb
   7      ** library. This does NOT imply that all of Samba is released
   8      ** under the LGPL
   9
  10    This library is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU Lesser General Public
  12    License as published by the Free Software Foundation; either
  13    version 3 of the License, or (at your option) any later version.
  14
  15    This library is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    Lesser General Public License for more details.
  19
  20    You should have received a copy of the GNU Lesser General Public
  21    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 /*
  25  *  Name: ldb
  26  *
  27  *  Component: ldb debug
  28  *
  29  *  Description: functions for printing debug messages
  30  *
  31  *  Author: Andrew Tridgell
  32  */
  33
  34 #include "includes.h"
  35 #include "ldb/include/includes.h"
  36
  37 /*
  38   this allows the user to choose their own debug function
  39 */
  40 int ldb_set_debug(struct ldb_context *ldb,
  41                   void (*debug)(void *context, enum ldb_debug_level level,
  42                                 const char *fmt, va_list ap),
  43                   void *context)
  44 {
  45         ldb->debug_ops.debug = debug;
  46         ldb->debug_ops.context = context;
  47         return 0;
  48 }
  49
  50 /*
  51   debug function for ldb_set_debug_stderr
  52 */
  53 static void ldb_debug_stderr(void *context, enum ldb_debug_level level,
  54                              const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0);
  55 static void ldb_debug_stderr(void *context, enum ldb_debug_level level,
  56                              const char *fmt, va_list ap)
  57 {
  58         if (level <= LDB_DEBUG_WARNING) {
  59                 vfprintf(stderr, fmt, ap);
  60         }
  61 }
  62
  63 /*
  64   convenience function to setup debug messages on stderr
  65   messages of level LDB_DEBUG_WARNING and higher are printed
  66 */
  67 int ldb_set_debug_stderr(struct ldb_context *ldb)
  68 {
  69         return ldb_set_debug(ldb, ldb_debug_stderr, ldb);
  70 }
  71
  72 /*
  73   log a message
  74 */
  75 void ldb_debug(struct ldb_context *ldb, enum ldb_debug_level level, const char *fmt, ...)
  76 {
  77         va_list ap;
  78         if (ldb->debug_ops.debug == NULL) {
  79                 ldb_set_debug_stderr(ldb);
  80         }
  81         va_start(ap, fmt);
  82         ldb->debug_ops.debug(ldb->debug_ops.context, level, fmt, ap);
  83         va_end(ap);
  84 }
  85
  86
  87 /*
  88   log a message, and set the ldb error string to the same message
  89 */
  90 void ldb_debug_set(struct ldb_context *ldb, enum ldb_debug_level level,
  91                    const char *fmt, ...)
  92 {
  93         va_list ap;
  94         char *msg;
  95         va_start(ap, fmt);
  96         msg = talloc_vasprintf(ldb, fmt, ap);
  97         va_end(ap);
  98         if (msg != NULL) {
  99                 ldb_set_errstring(ldb, msg);
 100                 ldb_debug(ldb, level, "%s", msg);
 101         }
 102         talloc_free(msg);
 103 }
 104