diff options
Diffstat (limited to 'src/libstrongswan/library.c')
| -rw-r--r-- | src/libstrongswan/library.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/src/libstrongswan/library.c b/src/libstrongswan/library.c new file mode 100644 index 000000000..9f96d119c --- /dev/null +++ b/src/libstrongswan/library.c @@ -0,0 +1,184 @@ +/** + * @file library.c + * + * @brief Helper functions and definitions. + * + */ + +/* + * Copyright (C) 2005-2006 Martin Willi + * Copyright (C) 2005 Jan Hutter + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program 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 General Public License + * for more details. + */ + +#include <string.h> +#include <time.h> +#include <stdio.h> +#include <stdarg.h> +#include <pthread.h> + +#include "library.h" + +#include <printf_hook.h> + +ENUM(status_names, SUCCESS, DESTROY_ME, + "SUCCESS", + "FAILED", + "OUT_OF_RES", + "ALREADY_DONE", + "NOT_SUPPORTED", + "INVALID_ARG", + "NOT_FOUND", + "PARSE_ERROR", + "VERIFY_ERROR", + "INVALID_STATE", + "DESTROY_ME", + "NEED_MORE", +); + +/** + * Described in header. + */ +void *clalloc(void * pointer, size_t size) +{ + void *data; + data = malloc(size); + + memcpy(data, pointer,size); + + return (data); +} + +/** + * Described in header. + */ +void memxor(u_int8_t dest[], u_int8_t src[], size_t n) +{ + size_t i; + for (i = 0; i < n; i++) + { + dest[i] ^= src[i]; + } +} + +/** + * We use a single mutex for all refcount variables. This + * is not optimal for performance, but the critical section + * is not that long... + * TODO: Consider to include a mutex in each refcount_t variable. + */ +static pthread_mutex_t ref_mutex = PTHREAD_MUTEX_INITIALIZER; + +/** + * Described in header. + * + * TODO: May be implemented with atomic CPU instructions + * instead of a mutex. + */ +void ref_get(refcount_t *ref) +{ + pthread_mutex_lock(&ref_mutex); + (*ref)++; + pthread_mutex_unlock(&ref_mutex); +} + +/** + * Described in header. + * + * TODO: May be implemented with atomic CPU instructions + * instead of a mutex. + */ +bool ref_put(refcount_t *ref) +{ + bool more_refs; + + pthread_mutex_lock(&ref_mutex); + more_refs = --(*ref); + pthread_mutex_unlock(&ref_mutex); + return !more_refs; +} + +/** + * output handler in printf() for time_t + */ +static int print_time(FILE *stream, const struct printf_info *info, + const void *const *args) +{ + static const char* months[] = { + "Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" + }; + time_t *time = *((time_t**)(args[0])); + bool utc = TRUE; + struct tm t; + + if (info->alt) + { + utc = *((bool*)(args[1])); + } + if (time == UNDEFINED_TIME) + { + return fprintf(stream, "--- -- --:--:--%s----", + info->alt ? " UTC " : " "); + } + if (utc) + { + gmtime_r(time, &t); + } + else + { + localtime_r(time, &t); + } + return fprintf(stream, "%s %02d %02d:%02d:%02d%s%04d", + months[t.tm_mon], t.tm_mday, t.tm_hour, t.tm_min, + t.tm_sec, utc ? " UTC " : " ", t.tm_year + 1900); +} + +/** + * output handler in printf() for time deltas + */ +static int print_time_delta(FILE *stream, const struct printf_info *info, + const void *const *args) +{ + time_t *start = *((time_t**)(args[0])); + time_t *end = *((time_t**)(args[1])); + u_int delta = abs(*end - *start); + + char* unit = "second"; + + if (delta > 2 * 60 * 60 * 24) + { + delta /= 60 * 60 * 24; + unit = "day"; + } + else if (delta > 2 * 60 * 60) + { + delta /= 60 * 60; + unit = "hour"; + } + else if (delta > 2 * 60) + { + delta /= 60; + unit = "minute"; + } + return fprintf(stream, "%d %s%s", delta, unit, (delta == 1)? "":"s"); +} + +/** + * register printf() handlers for time_t + */ +static void __attribute__ ((constructor))print_register() +{ + register_printf_function(PRINTF_TIME, print_time, arginfo_ptr_alt_ptr_int); + register_printf_function(PRINTF_TIME_DELTA, print_time_delta, arginfo_ptr_ptr); +} |