5 Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
7 Copyright (C) 1997 - 2000 Pekka Riikonen
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
22 #include "silcincludes.h"
24 /* Set TRUE/FALSE to enable/disable debugging */
27 /* SILC Log name strings. These strings are printed to the log file. */
28 const SilcLogTypeName silc_log_types[] =
30 { "Info", SILC_LOG_INFO },
31 { "Warning", SILC_LOG_WARNING },
32 { "Error", SILC_LOG_ERROR },
33 { "Fatal", SILC_LOG_FATAL },
39 char *log_warning_file;
42 unsigned int log_info_size;
43 unsigned int log_warning_size;
44 unsigned int log_error_size;
45 unsigned int log_fatal_size;
47 /* Log callbacks. If these are set by the application these are used
48 instead of the default functions in this file. */
49 static SilcLogCb info_cb = NULL;
50 static SilcLogCb warning_cb = NULL;
51 static SilcLogCb error_cb = NULL;
52 static SilcLogCb fatal_cb = NULL;
54 /* Debug callbacks. If set these are used instead of default ones. */
55 static SilcDebugCb debug_cb = NULL;
56 static SilcDebugHexdumpCb debug_hexdump_cb = NULL;
58 /* Formats arguments to a string and returns it after allocating memory
59 for it. It must be remembered to free it later. */
61 char *silc_log_format(char *fmt, ...)
64 static char buf[8192];
66 memset(buf, 0, sizeof(buf));
68 vsnprintf(buf, sizeof(buf) - 1, fmt, args);
74 /* Outputs the log message to what ever log file selected. */
76 void silc_log_output(const char *filename, unsigned int maxsize,
77 SilcLogType type, char *string)
80 const SilcLogTypeName *np;
91 case SILC_LOG_WARNING:
93 (*warning_cb)(string);
114 /* Purge the log file if the max size is defined. */
116 fp = fopen(filename, "r");
120 filelen = fseek(fp, (off_t)0L, SEEK_END);
121 fseek(fp, (off_t)0L, SEEK_SET);
124 if (filelen >= maxsize)
129 /* Open the log file */
130 if ((fp = fopen(filename, "a+")) == NULL) {
131 fprintf(stderr, "warning: could not open log file "
132 "%s: %s\n", filename, strerror(errno));
133 fprintf(stderr, "warning: log messages will be displayed on the screen\n");
137 /* Get the log type name */
138 for(np = silc_log_types; np->name; np++) {
139 if (np->type == type)
143 fprintf(fp, "[%s] [%s] %s\n", silc_get_time(), np->name, string);
149 /* Outputs the debug message to stderr. */
151 void silc_log_output_debug(char *file, char *function,
152 int line, char *string)
161 (*debug_cb)(file, function, line, string);
166 /* fprintf(stderr, "%s:%s:%d: %s\n", file, function, line, string); */
167 fprintf(stderr, "%s:%d: %s\n", function, line, string);
172 /* Hexdumps a message */
174 void silc_log_output_hexdump(char *file, char *function,
175 int line, void *data_in,
176 unsigned int len, char *string)
180 unsigned char *data = (unsigned char *)data_in;
187 if (debug_hexdump_cb)
189 (*debug_hexdump_cb)(file, function, line, data_in, len, string);
194 /* fprintf(stderr, "%s:%s:%d: %s\n", file, function, line, string); */
195 fprintf(stderr, "%s:%d: %s\n", function, line, string);
205 if ((len - pos) < 16 && (len - pos <= len - off))
215 fprintf(stderr, "%08X ", k++ * 16);
217 for (i = 0; i < count; i++) {
218 fprintf(stderr, "%02X ", data[pos + i]);
220 if ((i + 1) % 4 == 0)
221 fprintf(stderr, " ");
224 if (count && count < 16) {
227 for (j = 0; j < 16 - count; j++) {
228 fprintf(stderr, " ");
230 if ((j + count + 1) % 4 == 0)
231 fprintf(stderr, " ");
235 for (i = 0; i < count; i++) {
238 if (data[pos] < 32 || data[pos] >= 127)
243 fprintf(stderr, "%c", ch);
248 fprintf(stderr, "\n");
257 void silc_log_set_files(char *info, unsigned int info_size,
258 char *warning, unsigned int warning_size,
259 char *error, unsigned int error_size,
260 char *fatal, unsigned int fatal_size)
262 log_info_file = info;
263 log_warning_file = warning;
264 log_error_file = error;
265 log_fatal_file = fatal;
267 log_info_size = info_size;
268 log_warning_size = warning_size;
269 log_error_size = error_size;
270 log_fatal_size = fatal_size;
273 /* Sets log callbacks */
275 void silc_log_set_callbacks(SilcLogCb info, SilcLogCb warning,
276 SilcLogCb error, SilcLogCb fatal)
279 warning_cb = warning;
284 /* Resets log callbacks */
286 void silc_log_reset_callbacks()
288 info_cb = warning_cb = error_cb = fatal_cb = NULL;
291 /* Sets debug callbacks */
293 void silc_log_set_debug_callbacks(SilcDebugCb debug,
294 SilcDebugHexdumpCb debug_hexdump)
297 debug_hexdump_cb = debug_hexdump;
300 /* Resets debug callbacks */
302 void silc_log_reset_debug_callbacks()
305 debug_hexdump_cb = NULL;