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/* Copyright (C) 2014 Daniel Dressler and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License. */
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include "logging.h"
#include "options.h"
void BASE_LOG(enum log_level level, const char *fmt, ...)
{
char buf[65536];
if (!g_options.verbose_mode && level != LOGGING_ERROR)
return;
va_list arg;
va_start(arg, fmt);
if (g_options.log_destination == LOGGING_STDERR)
vfprintf(stderr, fmt, arg);
else if (g_options.log_destination == LOGGING_SYSLOG) {
vsnprintf(buf, sizeof(buf), fmt, arg);
syslog(LOG_ERR, buf);
}
va_end(arg);
}
char* hexdump (void *addr, int len) {
int i;
char linebuf[17];
char *pc = (char*)addr;
char *outbuf, *outbufp;
outbuf = calloc((len / 16 + 1) * 80, sizeof(char));
if (outbuf == NULL)
return "*** Failed to allocate memory for hex dump! ***";
outbufp = outbuf;
/* Process every byte in the data. */
for (i = 0; i < len; i++) {
if ((i % 16) == 0) { /* Multiple of 16 means new line (with line offset). */
if (i != 0) { /* Just don't print ASCII for the zeroth line. */
sprintf (outbufp, " %s\n", linebuf);
outbufp += strlen(linebuf) + 3;
}
/* Output the offset. */
sprintf (outbufp, " %08x ", i);
outbufp += 11;
}
/* Now the hex code for the specific character. */
sprintf (outbufp, " %02x", pc[i]);
outbufp += 3;
/* And store a printable ASCII character for later. */
if ((pc[i] < 0x20) || (pc[i] > 0x7e))
linebuf[i % 16] = '.';
else
linebuf[i % 16] = pc[i];
linebuf[(i % 16) + 1] = '\0';
}
/* Pad out last line if not exactly 16 characters. */
while ((i % 16) != 0) {
sprintf (outbufp, " ");
outbufp += 3;
i++;
}
/* And print the final ASCII bit. */
sprintf (outbufp, " %s\n", linebuf);
return outbuf;
}
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