src/utils.c

/*
 * utils.c
 * contains utilitary methos for logging and debugging
 *
 * Copyright (c) 2008 Jonathan Beck All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA 
 */
#include <stdarg.h>
#include <stdio.h>
#include "utils.h"

int toto_debug = 0;
uint16_t dbg_mask = 0;

/**
 * Sets the level of debugging. Currently the only acceptable values are 0 and
 * 1.
 *
 * @param level Set to 0 for no debugging or 1 for debugging.
 */
void iphone_set_debug(int level)
{
	toto_debug = level;
}


/**
 * Set debug ids to display. Values can be OR-ed
 *
 * @param level Set to 0 for no debugging or 1 for debugging.
 */
void iphone_set_debug_mask(uint16_t mask)
{
	dbg_mask = mask;
}

void log_debug_msg(const char *format, ...)
{
#ifndef STRIP_DEBUG_CODE

	va_list args;
	/* run the real fprintf */
	va_start(args, format);

	if (toto_debug)
		vfprintf(stderr, format, args);

	va_end(args);

#endif
}

void log_dbg_msg(uint16_t id, const char *format, ...)
{
#ifndef STRIP_DEBUG_CODE
	if (id & dbg_mask) {
		va_list args;
		/* run the real fprintf */
		va_start(args, format);

		vfprintf(stderr, format, args);

		va_end(args);
	}
#endif
}

inline void log_debug_buffer(const char *data, const int length)
{
#ifndef STRIP_DEBUG_CODE
	int i;
	int j;
	unsigned char c;

	if (toto_debug) {
		for (i = 0; i < length; i += 16) {
			fprintf(stderr, "%04x: ", i);
			for (j = 0; j < 16; j++) {
				if (i + j >= length) {
					fprintf(stderr, "   ");
					continue;
				}
				fprintf(stderr, "%02hhx ", *(data + i + j));
			}
			fprintf(stderr, "  | ");
			for (j = 0; j < 16; j++) {
				if (i + j >= length)
					break;
				c = *(data + i + j);
				if ((c < 32) || (c > 127)) {
					fprintf(stderr, ".");
					continue;
				}
				fprintf(stderr, "%c", c);
			}
			fprintf(stderr, "\n");
		}
		fprintf(stderr, "\n");
	}
#endif
}

inline void dump_debug_buffer(const char *file, const char *data, const int length)
{
#ifndef STRIP_DEBUG_CODE

	/* run the real fprintf */
	if (toto_debug) {
		FILE *my_ssl_packet = fopen(file, "w+");
		fwrite(data, 1, length, my_ssl_packet);
		fflush(my_ssl_packet);
		fprintf(stderr, "Wrote SSL packet to drive, too.\n");
		fclose(my_ssl_packet);
	}
#endif
}