merged the modularization branch (credentials) back to trunk
This commit is contained in:
Martin Willi
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/*
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* Copyright (C) 2005-2008 Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* $Id$
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*/
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#include "utils.h"
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#include <string.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <enum.h>
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ENUM(status_names, SUCCESS, DESTROY_ME,
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"SUCCESS",
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"FAILED",
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"OUT_OF_RES",
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"ALREADY_DONE",
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"NOT_SUPPORTED",
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"INVALID_ARG",
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"NOT_FOUND",
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"PARSE_ERROR",
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"VERIFY_ERROR",
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"INVALID_STATE",
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"DESTROY_ME",
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"NEED_MORE",
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);
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/**
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* Described in header.
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*/
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void *clalloc(void * pointer, size_t size)
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{
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void *data;
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data = malloc(size);
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memcpy(data, pointer, size);
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return (data);
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}
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/**
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* Described in header.
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*/
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void memxor(u_int8_t dest[], u_int8_t src[], size_t n)
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{
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size_t i;
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for (i = 0; i < n; i++)
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{
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dest[i] ^= src[i];
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}
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}
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/**
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* We use a single mutex for all refcount variables. This
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* is not optimal for performance, but the critical section
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* is not that long...
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* TODO: Consider to include a mutex in each refcount_t variable.
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*/
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static pthread_mutex_t ref_mutex = PTHREAD_MUTEX_INITIALIZER;
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/**
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* Described in header.
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*
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* TODO: May be implemented with atomic CPU instructions
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* instead of a mutex.
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*/
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void ref_get(refcount_t *ref)
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{
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pthread_mutex_lock(&ref_mutex);
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(*ref)++;
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pthread_mutex_unlock(&ref_mutex);
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}
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/**
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* Described in header.
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*
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* TODO: May be implemented with atomic CPU instructions
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* instead of a mutex.
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*/
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bool ref_put(refcount_t *ref)
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{
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bool more_refs;
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pthread_mutex_lock(&ref_mutex);
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more_refs = --(*ref);
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pthread_mutex_unlock(&ref_mutex);
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return !more_refs;
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}
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/**
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* output handler in printf() for time_t
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*/
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static int time_print(FILE *stream, const struct printf_info *info,
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const void *const *args)
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{
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static const char* months[] = {
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"Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
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};
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time_t *time = *((time_t**)(args[0]));
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bool utc = TRUE;
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struct tm t;
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if (info->alt)
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{
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utc = *((bool*)(args[1]));
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}
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if (time == UNDEFINED_TIME)
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{
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return fprintf(stream, "--- -- --:--:--%s----",
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info->alt ? " UTC " : " ");
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}
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if (utc)
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{
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gmtime_r(time, &t);
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}
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else
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{
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localtime_r(time, &t);
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}
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return fprintf(stream, "%s %02d %02d:%02d:%02d%s%04d",
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months[t.tm_mon], t.tm_mday, t.tm_hour, t.tm_min,
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t.tm_sec, utc ? " UTC " : " ", t.tm_year + 1900);
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}
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/**
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* arginfo handler for printf() time
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*/
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static int time_arginfo(const struct printf_info *info, size_t n, int *argtypes)
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{
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if (info->alt)
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{
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if (n > 1)
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{
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argtypes[0] = PA_POINTER;
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argtypes[1] = PA_INT;
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}
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return 2;
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}
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if (n > 0)
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{
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argtypes[0] = PA_POINTER;
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}
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return 1;
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}
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/**
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* output handler in printf() for time deltas
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*/
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static int time_delta_print(FILE *stream, const struct printf_info *info,
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const void *const *args)
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{
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char* unit = "second";
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time_t *arg1, *arg2;
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time_t delta;
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arg1 = *((time_t**)(args[0]));
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if (info->alt)
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{
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arg2 = *((time_t**)(args[1]));
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delta = abs(*arg1 - *arg2);
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}
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else
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{
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delta = *arg1;
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}
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if (delta > 2 * 60 * 60 * 24)
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{
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delta /= 60 * 60 * 24;
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unit = "day";
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}
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else if (delta > 2 * 60 * 60)
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{
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delta /= 60 * 60;
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unit = "hour";
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}
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else if (delta > 2 * 60)
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{
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delta /= 60;
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unit = "minute";
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}
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return fprintf(stream, "%d %s%s", delta, unit, (delta == 1)? "":"s");
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}
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/**
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* arginfo handler for printf() time deltas
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*/
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int time_delta_arginfo(const struct printf_info *info, size_t n, int *argtypes)
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{
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if (info->alt)
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{
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if (n > 1)
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{
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argtypes[0] = PA_POINTER;
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argtypes[1] = PA_POINTER;
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}
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return 2;
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}
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if (n > 0)
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{
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argtypes[0] = PA_POINTER;
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}
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return 1;
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}
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/**
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* Number of bytes per line to dump raw data
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*/
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#define BYTES_PER_LINE 16
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static char hexdig_upper[] = "0123456789ABCDEF";
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/**
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* output handler in printf() for mem ranges
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*/
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static int mem_print(FILE *stream, const struct printf_info *info,
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const void *const *args)
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{
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char *bytes = *((void**)(args[0]));
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int len = *((size_t*)(args[1]));
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char buffer[BYTES_PER_LINE * 3];
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char ascii_buffer[BYTES_PER_LINE + 1];
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char *buffer_pos = buffer;
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char *bytes_pos = bytes;
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char *bytes_roof = bytes + len;
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int line_start = 0;
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int i = 0;
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int written = 0;
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written += fprintf(stream, "=> %d bytes @ %p", len, bytes);
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while (bytes_pos < bytes_roof)
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{
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*buffer_pos++ = hexdig_upper[(*bytes_pos >> 4) & 0xF];
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*buffer_pos++ = hexdig_upper[ *bytes_pos & 0xF];
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ascii_buffer[i++] =
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(*bytes_pos > 31 && *bytes_pos < 127) ? *bytes_pos : '.';
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if (++bytes_pos == bytes_roof || i == BYTES_PER_LINE)
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{
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int padding = 3 * (BYTES_PER_LINE - i);
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int written;
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while (padding--)
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{
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*buffer_pos++ = ' ';
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}
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*buffer_pos++ = '\0';
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ascii_buffer[i] = '\0';
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written += fprintf(stream, "\n%4d: %s %s",
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line_start, buffer, ascii_buffer);
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buffer_pos = buffer;
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line_start += BYTES_PER_LINE;
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i = 0;
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}
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else
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{
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*buffer_pos++ = ' ';
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}
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}
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return written;
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}
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/**
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* arginfo handler for printf() mem ranges
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*/
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int mem_arginfo(const struct printf_info *info, size_t n, int *argtypes)
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{
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if (n > 1)
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{
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argtypes[0] = PA_POINTER;
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argtypes[1] = PA_INT;
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}
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return 2;
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}
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/**
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* return printf hook functions for a time
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*/
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printf_hook_functions_t time_get_printf_hooks()
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{
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printf_hook_functions_t hooks = {time_print, time_arginfo};
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return hooks;
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}
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/**
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* return printf hook functions for a time delta
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*/
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printf_hook_functions_t time_delta_get_printf_hooks()
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{
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printf_hook_functions_t hooks = {time_delta_print, time_delta_arginfo};
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return hooks;
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}
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/**
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* return printf hook functions for mem ranges
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*/
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printf_hook_functions_t mem_get_printf_hooks()
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{
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printf_hook_functions_t hooks = {mem_print, mem_arginfo};
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return hooks;
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}
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