2 This file is part of GNUnet.
3 (C) 2006, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file include/gnunet_common.h
23 * @brief commonly used definitions; globals in this file
24 * are exempt from the rule that the module name ("common")
25 * must be part of the symbol name.
27 * @author Christian Grothoff
30 #ifndef GNUNET_COMMON_H
31 #define GNUNET_COMMON_H
34 #include <sys/socket.h>
37 #include <netinet/in.h>
50 * Version of the API (for entire gnunetutil.so library).
52 #define GNUNET_UTIL_VERSION 0x00090100
55 * Named constants for return values. The following
56 * invariants hold: "GNUNET_NO == 0" (to allow "if (GNUNET_NO)")
57 * "GNUNET_OK != GNUNET_SYSERR", "GNUNET_OK != GNUNET_NO", "GNUNET_NO != GNUNET_SYSERR"
58 * and finally "GNUNET_YES != GNUNET_NO".
61 #define GNUNET_SYSERR -1
65 #define GNUNET_MIN(a,b) (((a) < (b)) ? (a) : (b))
67 #define GNUNET_MAX(a,b) (((a) > (b)) ? (a) : (b))
69 /* some systems use one underscore only... */
72 #define __BYTE_ORDER _BYTE_ORDER
77 #define __BIG_ENDIAN _BIG_ENDIAN
80 #ifndef __LITTLE_ENDIAN
82 #define __LITTLE_ENDIAN _LITTLE_ENDIAN
90 # if __BYTE_ORDER == __LITTLE_ENDIAN
91 # define GNUNET_htobe16(x) __bswap_16 (x)
92 # define GNUNET_htole16(x) (x)
93 # define GNUNET_be16toh(x) __bswap_16 (x)
94 # define GNUNET_le16toh(x) (x)
96 # define GNUNET_htobe32(x) __bswap_32 (x)
97 # define GNUNET_htole32(x) (x)
98 # define GNUNET_be32toh(x) __bswap_32 (x)
99 # define GNUNET_le32toh(x) (x)
101 # define GNUNET_htobe64(x) __bswap_64 (x)
102 # define GNUNET_htole64(x) (x)
103 # define GNUNET_be64toh(x) __bswap_64 (x)
104 # define GNUNET_le64toh(x) (x)
106 # if __BYTE_ORDER == __BIG_ENDIAN
107 # define GNUNET_htobe16(x) (x)
108 # define GNUNET_htole16(x) __bswap_16 (x)
109 # define GNUNET_be16toh(x) (x)
110 # define GNUNET_le16toh(x) __bswap_16 (x)
112 # define GNUNET_htobe32(x) (x)
113 # define GNUNET_htole32(x) __bswap_32 (x)
114 # define GNUNET_be32toh(x) (x)
115 # define GNUNET_le32toh(x) __bswap_32 (x)
117 # define GNUNET_htobe64(x) (x)
118 # define GNUNET_htole64(x) __bswap_64 (x)
119 # define GNUNET_be64toh(x) (x)
120 # define GNUNET_le64toh(x) __bswap_64 (x)
127 * gcc-ism to get packed structs.
129 #define GNUNET_PACKED __attribute__((packed))
132 * gcc-ism to document unused arguments
134 #define GNUNET_UNUSED __attribute__((unused))
137 * gcc-ism to document functions that don't return
139 #define GNUNET_NORETURN __attribute__((noreturn))
143 * gcc 4.x-ism to pack structures even on W32 (to be used before structs)
145 #define GNUNET_NETWORK_STRUCT_BEGIN \
146 _Pragma("pack(push)") \
150 * gcc 4.x-ism to pack structures even on W32 (to be used after structs)
152 #define GNUNET_NETWORK_STRUCT_END _Pragma("pack(pop)")
155 #error gcc 4.x or higher required on W32 systems
158 * Good luck, GNUNET_PACKED should suffice, but this won't work on W32
160 #define GNUNET_NETWORK_STRUCT_BEGIN
163 * Good luck, GNUNET_PACKED should suffice, but this won't work on W32
165 #define GNUNET_NETWORK_STRUCT_END
168 /* ************************ super-general types *********************** */
170 GNUNET_NETWORK_STRUCT_BEGIN
173 * Header for all communications.
175 struct GNUNET_MessageHeader
179 * The length of the struct (in bytes, including the length field itself),
180 * in big-endian format.
182 uint16_t size GNUNET_PACKED;
185 * The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
187 uint16_t type GNUNET_PACKED;
190 GNUNET_NETWORK_STRUCT_END
193 * @brief 512-bit hashcode
197 uint32_t bits[512 / 8 / sizeof (uint32_t)]; /* = 16 */
202 GNUNET_NETWORK_STRUCT_BEGIN
205 * The identity of the host (basically the SHA-512 hashcode of
208 struct GNUNET_PeerIdentity
210 GNUNET_HashCode hashPubKey GNUNET_PACKED;
212 GNUNET_NETWORK_STRUCT_END
215 * Function called with a filename.
218 * @param filename complete filename (absolute path)
219 * @return GNUNET_OK to continue to iterate,
220 * GNUNET_SYSERR to abort iteration with error!
222 typedef int (*GNUNET_FileNameCallback) (void *cls, const char *filename);
225 /* ****************************** logging ***************************** */
230 enum GNUNET_ErrorType
232 GNUNET_ERROR_TYPE_UNSPECIFIED = -1,
233 GNUNET_ERROR_TYPE_NONE = 0,
234 GNUNET_ERROR_TYPE_ERROR = 1,
235 GNUNET_ERROR_TYPE_WARNING = 2,
236 GNUNET_ERROR_TYPE_INFO = 4,
237 GNUNET_ERROR_TYPE_DEBUG = 8,
238 GNUNET_ERROR_TYPE_INVALID = 16,
239 GNUNET_ERROR_TYPE_BULK = 32
244 * User-defined handler for log messages.
247 * @param kind severeity
248 * @param component what component is issuing the message?
249 * @param date when was the message logged?
250 * @param message what is the message
252 typedef void (*GNUNET_Logger) (void *cls, enum GNUNET_ErrorType kind,
253 const char *component, const char *date,
254 const char *message);
258 * Number of log calls to ignore.
260 extern unsigned int skip_log;
262 #if !defined(GNUNET_CULL_LOGGING)
264 GNUNET_get_log_call_status (int caller_level, const char *comp,
265 const char *file, const char *function, int line);
270 * @param kind how serious is the error?
271 * @param message what is the message (format string)
272 * @param ... arguments for format string
275 GNUNET_log_nocheck (enum GNUNET_ErrorType kind, const char *message, ...);
278 #if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
279 #define _GNUNET_BOOLEAN_EXPR(expr) \
281 int _gnunet_boolean_var_; \
283 _gnunet_boolean_var_ = 1; \
285 _gnunet_boolean_var_ = 0; \
286 _gnunet_boolean_var_; \
288 #define GN_LIKELY(expr) (__builtin_expect (_GNUNET_BOOLEAN_EXPR(expr), 1))
289 #define GN_UNLIKELY(expr) (__builtin_expect (_GNUNET_BOOLEAN_EXPR(expr), 0))
291 #define GN_LIKELY(expr) (expr)
292 #define GN_UNLIKELY(expr) (expr)
295 #if !defined(GNUNET_LOG_CALL_STATUS)
296 #define GNUNET_LOG_CALL_STATUS -1
300 * Log function that specifies an alternative component.
301 * This function should be used by plugins.
303 * @param kind how serious is the error?
304 * @param comp component responsible for generating the message
305 * @param message what is the message (format string)
306 * @param ... arguments for format string
309 GNUNET_log_from_nocheck (enum GNUNET_ErrorType kind, const char *comp,
310 const char *message, ...);
312 #if !defined(GNUNET_CULL_LOGGING)
313 #define GNUNET_log_from(kind,comp,...) do { int log_line = __LINE__;\
314 static int log_call_enabled = GNUNET_LOG_CALL_STATUS;\
315 if (GN_UNLIKELY(log_call_enabled == -1))\
316 log_call_enabled = GNUNET_get_log_call_status ((kind) & (~GNUNET_ERROR_TYPE_BULK), comp, __FILE__, __FUNCTION__, log_line);\
317 if (GN_UNLIKELY(skip_log > 0)) {skip_log--;}\
319 if (GN_UNLIKELY(log_call_enabled))\
320 GNUNET_log_from_nocheck (kind, comp, __VA_ARGS__);\
324 #define GNUNET_log(kind,...) do { int log_line = __LINE__;\
325 static int log_call_enabled = GNUNET_LOG_CALL_STATUS;\
326 if (GN_UNLIKELY(log_call_enabled == -1))\
327 log_call_enabled = GNUNET_get_log_call_status ((kind) & (~GNUNET_ERROR_TYPE_BULK), NULL, __FILE__, __FUNCTION__, log_line);\
328 if (GN_UNLIKELY(skip_log > 0)) {skip_log--;}\
330 if (GN_UNLIKELY(log_call_enabled))\
331 GNUNET_log_nocheck (kind, __VA_ARGS__);\
335 #define GNUNET_log(...)
336 #define GNUNET_log_from(...)
341 * Abort the process, generate a core dump if possible.
344 GNUNET_abort (void) GNUNET_NORETURN;
347 * Ignore the next n calls to the log function.
349 * @param n number of log calls to ignore
350 * @param check_reset GNUNET_YES to assert that the log skip counter is currently zero
353 GNUNET_log_skip (unsigned int n, int check_reset);
359 * @param comp default component to use
360 * @param loglevel what types of messages should be logged
361 * @param logfile change logging to logfile (use NULL to keep stderr)
362 * @return GNUNET_OK on success, GNUNET_SYSERR if logfile could not be opened
365 GNUNET_log_setup (const char *comp, const char *loglevel, const char *logfile);
369 * Add a custom logger.
371 * @param logger log function
372 * @param logger_cls closure for logger
375 GNUNET_logger_add (GNUNET_Logger logger, void *logger_cls);
379 * Remove a custom logger.
381 * @param logger log function
382 * @param logger_cls closure for logger
385 GNUNET_logger_remove (GNUNET_Logger logger, void *logger_cls);
389 * Convert a hash value to a string (for printing debug messages).
390 * This is one of the very few calls in the entire API that is
393 * @param hc the hash code
397 GNUNET_h2s (const GNUNET_HashCode * hc);
401 * Convert a hash value to a string (for printing debug messages).
402 * This prints all 104 characters of a hashcode!
403 * This is one of the very few calls in the entire API that is
406 * @param hc the hash code
410 GNUNET_h2s_full (const GNUNET_HashCode * hc);
414 * Convert a peer identity to a string (for printing debug messages).
415 * This is one of the very few calls in the entire API that is
418 * @param pid the peer identity
419 * @return string form of the pid; will be overwritten by next
420 * call to GNUNET_i2s.
423 GNUNET_i2s (const struct GNUNET_PeerIdentity *pid);
427 * Convert a "struct sockaddr*" (IPv4 or IPv6 address) to a string
428 * (for printing debug messages). This is one of the very few calls
429 * in the entire API that is NOT reentrant!
431 * @param addr the address
432 * @param addrlen the length of the address
433 * @return nicely formatted string for the address
434 * will be overwritten by next call to GNUNET_a2s.
437 GNUNET_a2s (const struct sockaddr *addr, socklen_t addrlen);
440 * Convert error type to string.
442 * @param kind type to convert
443 * @return string corresponding to the type
446 GNUNET_error_type_to_string (enum GNUNET_ErrorType kind);
450 * Use this for fatal errors that cannot be handled
452 #define GNUNET_assert(cond) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Assertion failed at %s:%d.\n"), __FILE__, __LINE__); GNUNET_abort(); } } while(0)
455 * Use this for fatal errors that cannot be handled
457 #define GNUNET_assert_at(cond, f, l) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Assertion failed at %s:%d.\n"), f, l); GNUNET_abort(); } } while(0)
460 * Use this for internal assertion violations that are
461 * not fatal (can be handled) but should not occur.
463 #define GNUNET_break(cond) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Assertion failed at %s:%d.\n"), __FILE__, __LINE__); } } while(0)
466 * Use this for assertion violations caused by other
467 * peers (i.e. protocol violations). We do not want to
468 * confuse end-users (say, some other peer runs an
469 * older, broken or incompatible GNUnet version), but
470 * we still want to see these problems during
471 * development and testing. "OP == other peer".
473 #define GNUNET_break_op(cond) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK, _("External protocol violation detected at %s:%d.\n"), __FILE__, __LINE__); } } while(0)
476 * Log an error message at log-level 'level' that indicates
477 * a failure of the command 'cmd' with the message given
478 * by strerror(errno).
480 #define GNUNET_log_strerror(level, cmd) do { GNUNET_log(level, _("`%s' failed at %s:%d with error: %s\n"), cmd, __FILE__, __LINE__, STRERROR(errno)); } while(0)
483 * Log an error message at log-level 'level' that indicates
484 * a failure of the command 'cmd' with the message given
485 * by strerror(errno).
487 #define GNUNET_log_from_strerror(level, component, cmd) do { GNUNET_log_from (level, component, _("`%s' failed at %s:%d with error: %s\n"), cmd, __FILE__, __LINE__, STRERROR(errno)); } while(0)
490 * Log an error message at log-level 'level' that indicates
491 * a failure of the command 'cmd' with the message given
492 * by strerror(errno).
494 #define GNUNET_log_strerror_file(level, cmd, filename) do { GNUNET_log(level, _("`%s' failed on file `%s' at %s:%d with error: %s\n"), cmd, filename,__FILE__, __LINE__, STRERROR(errno)); } while(0)
497 * Log an error message at log-level 'level' that indicates
498 * a failure of the command 'cmd' with the message given
499 * by strerror(errno).
501 #define GNUNET_log_from_strerror_file(level, component, cmd, filename) do { GNUNET_log_from (level, component, _("`%s' failed on file `%s' at %s:%d with error: %s\n"), cmd, filename,__FILE__, __LINE__, STRERROR(errno)); } while(0)
503 /* ************************* endianess conversion ****************** */
506 * Convert unsigned 64-bit integer to host-byte-order.
507 * @param n the value in network byte order
508 * @return the same value in host byte order
511 GNUNET_ntohll (uint64_t n);
514 * Convert unsigned 64-bit integer to network-byte-order.
515 * @param n the value in host byte order
516 * @return the same value in network byte order
519 GNUNET_htonll (uint64_t n);
522 * Convert double to network-byte-order.
523 * @param d the value in network byte order
524 * @return the same value in host byte order
527 GNUNET_hton_double (double d);
530 * Convert double to host-byte-order
531 * @param d the value in network byte order
532 * @return the same value in host byte order
535 GNUNET_ntoh_double (double d);
537 /* ************************* allocation functions ****************** */
540 * Maximum allocation with GNUNET_malloc macro.
542 #define GNUNET_MAX_MALLOC_CHECKED (1024 * 1024 * 40)
545 * Wrapper around malloc. Allocates size bytes of memory.
546 * The memory will be zero'ed out.
548 * @param size the number of bytes to allocate, must be
549 * smaller than 40 MB.
550 * @return pointer to size bytes of memory, never NULL (!)
552 #define GNUNET_malloc(size) GNUNET_xmalloc_(size, __FILE__, __LINE__)
555 * Allocate and initialize a block of memory.
557 * @param buf data to initalize the block with
558 * @param size the number of bytes in buf (and size of the allocation)
559 * @return pointer to size bytes of memory, never NULL (!)
561 #define GNUNET_memdup(buf,size) GNUNET_xmemdup_(buf, size, __FILE__, __LINE__)
564 * Wrapper around malloc. Allocates size bytes of memory.
565 * The memory will be zero'ed out.
567 * @param size the number of bytes to allocate
568 * @return pointer to size bytes of memory, NULL if we do not have enough memory
570 #define GNUNET_malloc_large(size) GNUNET_xmalloc_unchecked_(size, __FILE__, __LINE__)
573 * Wrapper around realloc. Rellocates size bytes of memory.
575 * @param ptr the pointer to reallocate
576 * @param size the number of bytes to reallocate
577 * @return pointer to size bytes of memory
579 #define GNUNET_realloc(ptr, size) GNUNET_xrealloc_(ptr, size, __FILE__, __LINE__)
582 * Wrapper around free. Frees the memory referred to by ptr.
583 * Note that is is generally better to free memory that was
584 * allocated with GNUNET_array_grow using GNUNET_array_grow(mem, size, 0) instead of GNUNET_free.
586 * @param ptr location where to free the memory. ptr must have
587 * been returned by GNUNET_strdup, GNUNET_strndup, GNUNET_malloc or GNUNET_array_grow earlier.
589 #define GNUNET_free(ptr) GNUNET_xfree_(ptr, __FILE__, __LINE__)
592 * Free the memory pointed to by ptr if ptr is not NULL.
593 * Equivalent to if (ptr!=null)GNUNET_free(ptr).
595 * @param ptr the location in memory to free
597 #define GNUNET_free_non_null(ptr) do { void * __x__ = ptr; if (__x__ != NULL) { GNUNET_free(__x__); } } while(0)
600 * Wrapper around GNUNET_strdup. Makes a copy of the zero-terminated string
603 * @param a pointer to a zero-terminated string
604 * @return a copy of the string including zero-termination
606 #define GNUNET_strdup(a) GNUNET_xstrdup_(a,__FILE__,__LINE__)
609 * Wrapper around GNUNET_strndup. Makes a partial copy of the string
612 * @param a pointer to a string
613 * @param length of the string to duplicate
614 * @return a partial copy of the string including zero-termination
616 #define GNUNET_strndup(a,length) GNUNET_xstrndup_(a,length,__FILE__,__LINE__)
619 * Grow a well-typed (!) array. This is a convenience
620 * method to grow a vector <tt>arr</tt> of size <tt>size</tt>
621 * to the new (target) size <tt>tsize</tt>.
624 * Example (simple, well-typed stack):
627 * static struct foo * myVector = NULL;
628 * static int myVecLen = 0;
630 * static void push(struct foo * elem) {
631 * GNUNET_array_grow(myVector, myVecLen, myVecLen+1);
632 * memcpy(&myVector[myVecLen-1], elem, sizeof(struct foo));
635 * static void pop(struct foo * elem) {
636 * if (myVecLen == 0) die();
637 * memcpy(elem, myVector[myVecLen-1], sizeof(struct foo));
638 * GNUNET_array_grow(myVector, myVecLen, myVecLen-1);
642 * @param arr base-pointer of the vector, may be NULL if size is 0;
643 * will be updated to reflect the new address. The TYPE of
644 * arr is important since size is the number of elements and
645 * not the size in bytes
646 * @param size the number of elements in the existing vector (number
647 * of elements to copy over)
648 * @param tsize the target size for the resulting vector, use 0 to
649 * free the vector (then, arr will be NULL afterwards).
651 #define GNUNET_array_grow(arr,size,tsize) GNUNET_xgrow_((void**)&arr, sizeof(arr[0]), &size, tsize, __FILE__, __LINE__)
654 * Append an element to a list (growing the
657 #define GNUNET_array_append(arr,size,element) do { GNUNET_array_grow(arr,size,size+1); arr[size-1] = element; } while(0)
660 * Like snprintf, just aborts if the buffer is of insufficient size.
662 * @param buf pointer to buffer that is written to
663 * @param size number of bytes in buf
664 * @param format format strings
665 * @param ... data for format string
666 * @return number of bytes written to buf or negative value on error
669 GNUNET_snprintf (char *buf, size_t size, const char *format, ...);
673 * Like asprintf, just portable.
675 * @param buf set to a buffer of sufficient size (allocated, caller must free)
676 * @param format format string (see printf, fprintf, etc.)
677 * @param ... data for format string
678 * @return number of bytes in "*buf" excluding 0-termination
681 GNUNET_asprintf (char **buf, const char *format, ...);
684 /* ************** internal implementations, use macros above! ************** */
687 * Allocate memory. Checks the return value, aborts if no more
688 * memory is available. Don't use GNUNET_xmalloc_ directly. Use the
689 * GNUNET_malloc macro.
690 * The memory will be zero'ed out.
692 * @param size number of bytes to allocate
693 * @param filename where is this call being made (for debugging)
694 * @param linenumber line where this call is being made (for debugging)
695 * @return allocated memory, never NULL
698 GNUNET_xmalloc_ (size_t size, const char *filename, int linenumber);
702 * Allocate and initialize memory. Checks the return value, aborts if no more
703 * memory is available. Don't use GNUNET_xmemdup_ directly. Use the
704 * GNUNET_memdup macro.
706 * @param buf buffer to initialize from (must contain size bytes)
707 * @param size number of bytes to allocate
708 * @param filename where is this call being made (for debugging)
709 * @param linenumber line where this call is being made (for debugging)
710 * @return allocated memory, never NULL
713 GNUNET_xmemdup_ (const void *buf, size_t size, const char *filename,
718 * Allocate memory. This function does not check if the allocation
719 * request is within reasonable bounds, allowing allocations larger
720 * than 40 MB. If you don't expect the possibility of very large
721 * allocations, use GNUNET_malloc instead. The memory will be zero'ed
724 * @param size number of bytes to allocate
725 * @param filename where is this call being made (for debugging)
726 * @param linenumber line where this call is being made (for debugging)
727 * @return pointer to size bytes of memory, NULL if we do not have enough memory
730 GNUNET_xmalloc_unchecked_ (size_t size, const char *filename, int linenumber);
733 * Reallocate memory. Checks the return value, aborts if no more
734 * memory is available.
737 GNUNET_xrealloc_ (void *ptr, size_t n, const char *filename, int linenumber);
740 * Free memory. Merely a wrapper for the case that we
741 * want to keep track of allocations. Don't use GNUNET_xfree_
742 * directly. Use the GNUNET_free macro.
744 * @param ptr pointer to memory to free
745 * @param filename where is this call being made (for debugging)
746 * @param linenumber line where this call is being made (for debugging)
749 GNUNET_xfree_ (void *ptr, const char *filename, int linenumber);
753 * Dup a string. Don't call GNUNET_xstrdup_ directly. Use the GNUNET_strdup macro.
754 * @param str string to duplicate
755 * @param filename where is this call being made (for debugging)
756 * @param linenumber line where this call is being made (for debugging)
757 * @return the duplicated string
760 GNUNET_xstrdup_ (const char *str, const char *filename, int linenumber);
763 * Dup partially a string. Don't call GNUNET_xstrndup_ directly. Use the GNUNET_strndup macro.
765 * @param str string to duplicate
766 * @param len length of the string to duplicate
767 * @param filename where is this call being made (for debugging)
768 * @param linenumber line where this call is being made (for debugging)
769 * @return the duplicated string
772 GNUNET_xstrndup_ (const char *str, size_t len, const char *filename,
776 * Grow an array, the new elements are zeroed out.
777 * Grows old by (*oldCount-newCount)*elementSize
778 * bytes and sets *oldCount to newCount.
780 * Don't call GNUNET_xgrow_ directly. Use the GNUNET_array_grow macro.
782 * @param old address of the pointer to the array
784 * @param elementSize the size of the elements of the array
785 * @param oldCount address of the number of elements in the *old array
786 * @param newCount number of elements in the new array, may be 0 (then *old will be NULL afterwards)
787 * @param filename where is this call being made (for debugging)
788 * @param linenumber line where this call is being made (for debugging)
791 GNUNET_xgrow_ (void **old, size_t elementSize, unsigned int *oldCount,
792 unsigned int newCount, const char *filename, int linenumber);
796 * Create a copy of the given message.
798 * @param msg message to copy
799 * @return duplicate of the message
801 struct GNUNET_MessageHeader *
802 GNUNET_copy_message (const struct GNUNET_MessageHeader *msg);
805 #if __STDC_VERSION__ < 199901L
807 #define __func__ __FUNCTION__
809 #define __func__ "<unknown>"
813 #endif /*GNUNET_COMMON_H_ */