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- /*
- This file is part of GNUnet.
- Copyright (C) 2006-2013 GNUnet e.V.
- GNUnet is free software: you can redistribute it and/or modify it
- under the terms of the GNU Affero General Public License as published
- by the Free Software Foundation, either version 3 of the License,
- or (at your option) any later version.
- GNUnet 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
- Affero General Public License for more details.
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- SPDX-License-Identifier: AGPL3.0-or-later
- */
- /**
- * @file include/gnunet_common.h
- * @brief commonly used definitions; globals in this file
- * are exempt from the rule that the module name ("common")
- * must be part of the symbol name.
- *
- * @author Christian Grothoff
- * @author Nils Durner
- * @author Martin Schanzenbach
- *
- * @defgroup logging Logging
- * @see [Documentation](https://gnunet.org/logging)
- *
- * @defgroup memory Memory management
- */
- #ifndef GNUNET_COMMON_H
- #define GNUNET_COMMON_H
- #if HAVE_SYS_SOCKET_H
- #include <sys/socket.h>
- #endif
- #if HAVE_NETINET_IN_H
- #include <netinet/in.h>
- #endif
- #ifdef MINGW
- #include "winproc.h"
- #endif
- #ifdef HAVE_STDINT_H
- #include <stdint.h>
- #endif
- #ifdef HAVE_STDARG_H
- #include <stdarg.h>
- #endif
- #ifdef HAVE_BYTESWAP_H
- #include <byteswap.h>
- #endif
- #ifdef __cplusplus
- extern "C"
- {
- #if 0 /* keep Emacsens' auto-indent happy */
- }
- #endif
- #endif
- /**
- * Version of the API (for entire gnunetutil.so library).
- */
- #define GNUNET_UTIL_VERSION 0x000A0102
- /**
- * Named constants for return values. The following invariants hold:
- * `GNUNET_NO == 0` (to allow `if (GNUNET_NO)`) `GNUNET_OK !=
- * GNUNET_SYSERR`, `GNUNET_OK != GNUNET_NO`, `GNUNET_NO !=
- * GNUNET_SYSERR` and finally `GNUNET_YES != GNUNET_NO`.
- */
- #define GNUNET_OK 1
- #define GNUNET_SYSERR -1
- #define GNUNET_YES 1
- #define GNUNET_NO 0
- #define GNUNET_MIN(a,b) (((a) < (b)) ? (a) : (b))
- #define GNUNET_MAX(a,b) (((a) > (b)) ? (a) : (b))
- /* some systems use one underscore only, and mingw uses no underscore... */
- #ifndef __BYTE_ORDER
- #ifdef _BYTE_ORDER
- #define __BYTE_ORDER _BYTE_ORDER
- #else
- #ifdef BYTE_ORDER
- #define __BYTE_ORDER BYTE_ORDER
- #endif
- #endif
- #endif
- #ifndef __BIG_ENDIAN
- #ifdef _BIG_ENDIAN
- #define __BIG_ENDIAN _BIG_ENDIAN
- #else
- #ifdef BIG_ENDIAN
- #define __BIG_ENDIAN BIG_ENDIAN
- #endif
- #endif
- #endif
- #ifndef __LITTLE_ENDIAN
- #ifdef _LITTLE_ENDIAN
- #define __LITTLE_ENDIAN _LITTLE_ENDIAN
- #else
- #ifdef LITTLE_ENDIAN
- #define __LITTLE_ENDIAN LITTLE_ENDIAN
- #endif
- #endif
- #endif
- /**
- * wrap va_arg for enums
- */
- #define GNUNET_VA_ARG_ENUM(va,X) ((enum X) va_arg (va, int))
- /**
- * @ingroup logging
- * define #GNUNET_EXTRA_LOGGING if using this header outside the GNUnet source
- * tree where gnunet_config.h is unavailable
- */
- #ifndef GNUNET_EXTRA_LOGGING
- #define GNUNET_EXTRA_LOGGING 0
- #endif
- /**
- * Endian operations
- */
- # if __BYTE_ORDER == __LITTLE_ENDIAN
- # define GNUNET_htobe16(x) __bswap_16 (x)
- # define GNUNET_htole16(x) (x)
- # define GNUNET_be16toh(x) __bswap_16 (x)
- # define GNUNET_le16toh(x) (x)
- # define GNUNET_htobe32(x) __bswap_32 (x)
- # define GNUNET_htole32(x) (x)
- # define GNUNET_be32toh(x) __bswap_32 (x)
- # define GNUNET_le32toh(x) (x)
- # define GNUNET_htobe64(x) __bswap_64 (x)
- # define GNUNET_htole64(x) (x)
- # define GNUNET_be64toh(x) __bswap_64 (x)
- # define GNUNET_le64toh(x) (x)
- #endif
- # if __BYTE_ORDER == __BIG_ENDIAN
- # define GNUNET_htobe16(x) (x)
- # define GNUNET_htole16(x) __bswap_16 (x)
- # define GNUNET_be16toh(x) (x)
- # define GNUNET_le16toh(x) __bswap_16 (x)
- # define GNUNET_htobe32(x) (x)
- # define GNUNET_htole32(x) __bswap_32 (x)
- # define GNUNET_be32toh(x) (x)
- # define GNUNET_le32toh(x) __bswap_32 (x)
- # define GNUNET_htobe64(x) (x)
- # define GNUNET_htole64(x) __bswap_64 (x)
- # define GNUNET_be64toh(x) (x)
- # define GNUNET_le64toh(x) __bswap_64 (x)
- #endif
- /**
- * Macro used to avoid using 0 for the length of a variable-size
- * array (Non-Zero-Length).
- *
- * Basically, C standard says that "int[n] x;" is undefined if n=0.
- * This was supposed to prevent issues with pointer aliasing.
- * However, C compilers may conclude that n!=0 as n=0 would be
- * undefined, and then optimize under the assumption n!=0, which
- * could cause actual issues. Hence, when initializing an array
- * on the stack with a variable-length that might be zero, write
- * "int[GNUNET_NZL(n)] x;" instead of "int[n] x".
- */
- #define GNUNET_NZL(l) GNUNET_MAX(1,l)
- /**
- * gcc-ism to get packed structs.
- */
- #define GNUNET_PACKED __attribute__((packed))
- /**
- * gcc-ism to get gcc bitfield layout when compiling with -mms-bitfields
- */
- #if MINGW
- #define GNUNET_GCC_STRUCT_LAYOUT __attribute__((gcc_struct))
- #else
- #define GNUNET_GCC_STRUCT_LAYOUT
- #endif
- /**
- * gcc-ism to force alignment; we use this to align char-arrays
- * that may then be cast to 'struct's. See also gcc
- * bug #33594.
- */
- #ifdef __BIGGEST_ALIGNMENT__
- #define GNUNET_ALIGN __attribute__((aligned (__BIGGEST_ALIGNMENT__)))
- #else
- #define GNUNET_ALIGN __attribute__((aligned (8)))
- #endif
- /**
- * gcc-ism to document unused arguments
- */
- #define GNUNET_UNUSED __attribute__((unused))
- /**
- * gcc-ism to document functions that don't return
- */
- #define GNUNET_NORETURN __attribute__((noreturn))
- #if MINGW
- #if __GNUC__ > 3
- /**
- * gcc 4.x-ism to pack structures even on W32 (to be used before structs);
- * Using this would cause structs to be unaligned on the stack on Sparc,
- * so we *only* use this on W32 (see #670578 from Debian); fortunately,
- * W32 doesn't run on sparc anyway.
- */
- #define GNUNET_NETWORK_STRUCT_BEGIN \
- _Pragma("pack(push)") \
- _Pragma("pack(1)")
- /**
- * gcc 4.x-ism to pack structures even on W32 (to be used after structs)
- * Using this would cause structs to be unaligned on the stack on Sparc,
- * so we *only* use this on W32 (see #670578 from Debian); fortunately,
- * W32 doesn't run on sparc anyway.
- */
- #define GNUNET_NETWORK_STRUCT_END _Pragma("pack(pop)")
- #else
- #error gcc 4.x or higher required on W32 systems
- #endif
- #else
- /**
- * Define as empty, GNUNET_PACKED should suffice, but this won't work on W32
- */
- #define GNUNET_NETWORK_STRUCT_BEGIN
- /**
- * Define as empty, GNUNET_PACKED should suffice, but this won't work on W32;
- */
- #define GNUNET_NETWORK_STRUCT_END
- #endif
- /* ************************ super-general types *********************** */
- GNUNET_NETWORK_STRUCT_BEGIN
- /**
- * @brief A 512-bit hashcode. These are the default length for GNUnet, using SHA-512.
- */
- struct GNUNET_HashCode
- {
- uint32_t bits[512 / 8 / sizeof (uint32_t)]; /* = 16 */
- };
- /**
- * @brief A 256-bit hashcode. Used under special conditions, like when space
- * is critical and security is not impacted by it.
- */
- struct GNUNET_ShortHashCode
- {
- uint32_t bits[256 / 8 / sizeof (uint32_t)]; /* = 8 */
- };
- /**
- * Header for all communications.
- */
- struct GNUNET_MessageHeader
- {
- /**
- * The length of the struct (in bytes, including the length field itself),
- * in big-endian format.
- */
- uint16_t size GNUNET_PACKED;
- /**
- * The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
- */
- uint16_t type GNUNET_PACKED;
- };
- /**
- * Answer from service to client about last operation.
- */
- struct GNUNET_OperationResultMessage
- {
- struct GNUNET_MessageHeader header;
- uint32_t reserved GNUNET_PACKED;
- /**
- * Operation ID.
- */
- uint64_t op_id GNUNET_PACKED;
- /**
- * Status code for the operation.
- */
- uint64_t result_code GNUNET_PACKED;
- /* Followed by data. */
- };
- /**
- * Identifier for an asynchronous execution context.
- */
- struct GNUNET_AsyncScopeId
- {
- uint32_t bits[16 / sizeof (uint32_t)]; /* = 16 bytes */
- };
- GNUNET_NETWORK_STRUCT_END
- /**
- * Saved async scope identifier or root scope.
- */
- struct GNUNET_AsyncScopeSave {
- /**
- * Saved scope. Unused if 'have_scope==GNUNET_NO'.
- */
- struct GNUNET_AsyncScopeId scope_id;
- /**
- * GNUNET_YES unless this saved scope is the unnamed root scope.
- */
- int have_scope;
- };
- /**
- * Function called with a filename.
- *
- * @param cls closure
- * @param filename complete filename (absolute path)
- * @return #GNUNET_OK to continue to iterate,
- * #GNUNET_NO to stop iteration with no error,
- * #GNUNET_SYSERR to abort iteration with error!
- */
- typedef int
- (*GNUNET_FileNameCallback) (void *cls,
- const char *filename);
- /**
- * Generic continuation callback.
- *
- * @param cls Closure.
- */
- typedef void
- (*GNUNET_ContinuationCallback) (void *cls);
- /**
- * Function called with the result of an asynchronous operation.
- *
- * @param cls
- * Closure.
- * @param result_code
- * Result code for the operation.
- * @param data
- * Data result for the operation.
- * @param data_size
- * Size of @a data.
- */
- typedef void
- (*GNUNET_ResultCallback) (void *cls, int64_t result_code,
- const void *data, uint16_t data_size);
- /* ****************************** logging ***************************** */
- /**
- * @ingroup logging
- * Types of errors.
- */
- enum GNUNET_ErrorType
- {
- GNUNET_ERROR_TYPE_UNSPECIFIED = -1,
- GNUNET_ERROR_TYPE_NONE = 0,
- GNUNET_ERROR_TYPE_ERROR = 1,
- GNUNET_ERROR_TYPE_WARNING = 2,
- /* UX: We need a message type that is output by
- * default without looking like there is a problem.
- */
- GNUNET_ERROR_TYPE_MESSAGE = 4,
- GNUNET_ERROR_TYPE_INFO = 8,
- GNUNET_ERROR_TYPE_DEBUG = 16,
- GNUNET_ERROR_TYPE_INVALID = 32,
- GNUNET_ERROR_TYPE_BULK = 64
- };
- /**
- * @ingroup logging
- * User-defined handler for log messages.
- *
- * @param cls closure
- * @param kind severeity
- * @param component what component is issuing the message?
- * @param date when was the message logged?
- * @param message what is the message
- */
- typedef void
- (*GNUNET_Logger) (void *cls,
- enum GNUNET_ErrorType kind,
- const char *component,
- const char *date,
- const char *message);
- /**
- * @ingroup logging
- * Get the number of log calls that are going to be skipped
- *
- * @return number of log calls to be ignored
- */
- int
- GNUNET_get_log_skip (void);
- #if !defined(GNUNET_CULL_LOGGING)
- int
- GNUNET_get_log_call_status (int caller_level,
- const char *comp,
- const char *file,
- const char *function,
- int line);
- #endif
- /**
- * @ingroup logging
- * Main log function.
- *
- * @param kind how serious is the error?
- * @param message what is the message (format string)
- * @param ... arguments for format string
- */
- void
- GNUNET_log_nocheck (enum GNUNET_ErrorType kind, const char *message, ...)
- __attribute__ ((format (printf, 2, 3)));
- /* from glib */
- #if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
- #define _GNUNET_BOOLEAN_EXPR(expr) \
- __extension__ ({ \
- int _gnunet_boolean_var_; \
- if (expr) \
- _gnunet_boolean_var_ = 1; \
- else \
- _gnunet_boolean_var_ = 0; \
- _gnunet_boolean_var_; \
- })
- #define GN_LIKELY(expr) (__builtin_expect (_GNUNET_BOOLEAN_EXPR(expr), 1))
- #define GN_UNLIKELY(expr) (__builtin_expect (_GNUNET_BOOLEAN_EXPR(expr), 0))
- #else
- #define GN_LIKELY(expr) (expr)
- #define GN_UNLIKELY(expr) (expr)
- #endif
- #if !defined(GNUNET_LOG_CALL_STATUS)
- #define GNUNET_LOG_CALL_STATUS -1
- #endif
- /**
- * @ingroup logging
- * Log function that specifies an alternative component.
- * This function should be used by plugins.
- *
- * @param kind how serious is the error?
- * @param comp component responsible for generating the message
- * @param message what is the message (format string)
- * @param ... arguments for format string
- */
- void
- GNUNET_log_from_nocheck (enum GNUNET_ErrorType kind, const char *comp,
- const char *message, ...);
- #if !defined(GNUNET_CULL_LOGGING)
- #define GNUNET_log_from(kind,comp,...) do { int log_line = __LINE__;\
- static int log_call_enabled = GNUNET_LOG_CALL_STATUS;\
- if ((GNUNET_EXTRA_LOGGING > 0) || ((GNUNET_ERROR_TYPE_DEBUG & (kind)) == 0)) { \
- if (GN_UNLIKELY(log_call_enabled == -1))\
- log_call_enabled = GNUNET_get_log_call_status ((kind) & (~GNUNET_ERROR_TYPE_BULK), (comp), __FILE__, __FUNCTION__, log_line); \
- if (GN_UNLIKELY(GNUNET_get_log_skip () > 0)) { GNUNET_log_skip (-1, GNUNET_NO); }\
- else {\
- if (GN_UNLIKELY(log_call_enabled))\
- GNUNET_log_from_nocheck ((kind), comp, __VA_ARGS__); \
- }\
- }\
- } while (0)
- #define GNUNET_log(kind,...) do { int log_line = __LINE__;\
- static int log_call_enabled = GNUNET_LOG_CALL_STATUS;\
- if ((GNUNET_EXTRA_LOGGING > 0) || ((GNUNET_ERROR_TYPE_DEBUG & (kind)) == 0)) { \
- if (GN_UNLIKELY(log_call_enabled == -1))\
- log_call_enabled = GNUNET_get_log_call_status ((kind) & (~GNUNET_ERROR_TYPE_BULK), NULL, __FILE__, __FUNCTION__, log_line);\
- if (GN_UNLIKELY(GNUNET_get_log_skip () > 0)) { GNUNET_log_skip (-1, GNUNET_NO); }\
- else {\
- if (GN_UNLIKELY(log_call_enabled))\
- GNUNET_log_nocheck ((kind), __VA_ARGS__); \
- }\
- }\
- } while (0)
- #else
- #define GNUNET_log(...)
- #define GNUNET_log_from(...)
- #endif
- /**
- * @ingroup logging
- * Log error message about missing configuration option.
- *
- * @param kind log level
- * @param section section with missing option
- * @param option name of missing option
- */
- void
- GNUNET_log_config_missing (enum GNUNET_ErrorType kind,
- const char *section,
- const char *option);
- /**
- * @ingroup logging
- * Log error message about invalid configuration option value.
- *
- * @param kind log level
- * @param section section with invalid option
- * @param option name of invalid option
- * @param required what is required that is invalid about the option
- */
- void
- GNUNET_log_config_invalid (enum GNUNET_ErrorType kind,
- const char *section,
- const char *option,
- const char *required);
- /**
- * @ingroup logging
- * Abort the process, generate a core dump if possible.
- * Most code should use `GNUNET_assert (0)` instead to
- * first log the location of the failure.
- */
- void
- GNUNET_abort_ (void) GNUNET_NORETURN;
- /**
- * @ingroup logging
- * Ignore the next @a n calls to the log function.
- *
- * @param n number of log calls to ignore (could be negative)
- * @param check_reset #GNUNET_YES to assert that the log skip counter is currently zero
- */
- void
- GNUNET_log_skip (int n,
- int check_reset);
- /**
- * @ingroup logging
- * Setup logging.
- *
- * @param comp default component to use
- * @param loglevel what types of messages should be logged
- * @param logfile change logging to logfile (use NULL to keep stderr)
- * @return #GNUNET_OK on success, #GNUNET_SYSERR if logfile could not be opened
- */
- int
- GNUNET_log_setup (const char *comp,
- const char *loglevel,
- const char *logfile);
- /**
- * @ingroup logging
- * Add a custom logger. Note that installing any custom logger
- * will disable the standard logger. When multiple custom loggers
- * are installed, all will be called. The standard logger will
- * only be used if no custom loggers are present.
- *
- * @param logger log function
- * @param logger_cls closure for @a logger
- */
- void
- GNUNET_logger_add (GNUNET_Logger logger,
- void *logger_cls);
- /**
- * @ingroup logging
- * Remove a custom logger.
- *
- * @param logger log function
- * @param logger_cls closure for @a logger
- */
- void
- GNUNET_logger_remove (GNUNET_Logger logger,
- void *logger_cls);
- /**
- * @ingroup logging
- * Convert a short hash value to a string (for printing debug messages).
- * This is one of the very few calls in the entire API that is
- * NOT reentrant!
- *
- * @param shc the hash code
- * @return string
- */
- const char *
- GNUNET_sh2s (const struct GNUNET_ShortHashCode *shc);
- /**
- * @ingroup logging
- * Convert a hash value to a string (for printing debug messages).
- * This is one of the very few calls in the entire API that is
- * NOT reentrant!
- *
- * @param hc the hash code
- * @return string
- */
- const char *
- GNUNET_h2s (const struct GNUNET_HashCode *hc);
- /**
- * @ingroup logging
- * Convert a hash value to a string (for printing debug messages).
- * This is one of the very few calls in the entire API that is
- * NOT reentrant! Identical to #GNUNET_h2s(), except that another
- * buffer is used so both #GNUNET_h2s() and #GNUNET_h2s2() can be
- * used within the same log statement.
- *
- * @param hc the hash code
- * @return string
- */
- const char *
- GNUNET_h2s2 (const struct GNUNET_HashCode *hc);
- /**
- * @ingroup logging
- * Convert a hash value to a string (for printing debug messages).
- * This prints all 104 characters of a hashcode!
- * This is one of the very few calls in the entire API that is
- * NOT reentrant!
- *
- * @param hc the hash code
- * @return string
- */
- const char *
- GNUNET_h2s_full (const struct GNUNET_HashCode *hc);
- /**
- * Public key. Details in gnunet_util_crypto.h.
- */
- struct GNUNET_CRYPTO_EddsaPublicKey;
- /**
- * Public key. Details in gnunet_util_crypto.h.
- */
- struct GNUNET_CRYPTO_EcdhePublicKey;
- /**
- * @ingroup logging
- * Convert a public key value to a string (for printing debug messages).
- * This is one of the very few calls in the entire API that is
- * NOT reentrant!
- *
- * @param hc the hash code
- * @return string
- */
- const char *
- GNUNET_p2s (const struct GNUNET_CRYPTO_EddsaPublicKey *p);
- /**
- * @ingroup logging
- * Convert a public key value to a string (for printing debug messages).
- * This is one of the very few calls in the entire API that is
- * NOT reentrant!
- *
- * @param hc the hash code
- * @return string
- */
- const char *
- GNUNET_p2s2 (const struct GNUNET_CRYPTO_EddsaPublicKey *p);
- /**
- * @ingroup logging
- * Convert a public key value to a string (for printing debug messages).
- * This is one of the very few calls in the entire API that is
- * NOT reentrant!
- *
- * @param hc the hash code
- * @return string
- */
- const char *
- GNUNET_e2s (const struct GNUNET_CRYPTO_EcdhePublicKey *p);
- /**
- * @ingroup logging
- * Convert a public key value to a string (for printing debug messages).
- * This is one of the very few calls in the entire API that is
- * NOT reentrant!
- *
- * @param hc the hash code
- * @return string
- */
- const char *
- GNUNET_e2s2 (const struct GNUNET_CRYPTO_EcdhePublicKey *p);
- /**
- * @ingroup logging
- * Convert a peer identity to a string (for printing debug messages).
- * This is one of the very few calls in the entire API that is
- * NOT reentrant!
- *
- * @param pid the peer identity
- * @return string form of the pid; will be overwritten by next
- * call to #GNUNET_i2s().
- */
- const char *
- GNUNET_i2s (const struct GNUNET_PeerIdentity *pid);
- /**
- * @ingroup logging
- * Convert a peer identity to a string (for printing debug messages).
- * This is one of the very few calls in the entire API that is
- * NOT reentrant! Identical to #GNUNET_i2s(), except that another
- * buffer is used so both #GNUNET_i2s() and #GNUNET_i2s2() can be
- * used within the same log statement.
- *
- * @param pid the peer identity
- * @return string form of the pid; will be overwritten by next
- * call to #GNUNET_i2s().
- */
- const char *
- GNUNET_i2s2 (const struct GNUNET_PeerIdentity *pid);
- /**
- * @ingroup logging
- * Convert a peer identity to a string (for printing debug messages).
- * This is one of the very few calls in the entire API that is
- * NOT reentrant!
- *
- * @param pid the peer identity
- * @return string form of the pid; will be overwritten by next
- * call to #GNUNET_i2s_full().
- */
- const char *
- GNUNET_i2s_full (const struct GNUNET_PeerIdentity *pid);
- /**
- * @ingroup logging
- * Convert a "struct sockaddr*" (IPv4 or IPv6 address) to a string
- * (for printing debug messages). This is one of the very few calls
- * in the entire API that is NOT reentrant!
- *
- * @param addr the address
- * @param addrlen the length of the @a addr
- * @return nicely formatted string for the address
- * will be overwritten by next call to #GNUNET_a2s().
- */
- const char *
- GNUNET_a2s (const struct sockaddr *addr,
- socklen_t addrlen);
- /**
- * @ingroup logging
- * Convert error type to string.
- *
- * @param kind type to convert
- * @return string corresponding to the type
- */
- const char *
- GNUNET_error_type_to_string (enum GNUNET_ErrorType kind);
- /**
- * @ingroup logging
- * Use this for fatal errors that cannot be handled
- */
- #define GNUNET_assert(cond) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Assertion failed at %s:%d. Aborting.\n"), __FILE__, __LINE__); GNUNET_abort_(); } } while(0)
- /**
- * @ingroup logging
- * Use this for fatal errors that cannot be handled
- */
- #define GNUNET_assert_at(cond, f, l) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Assertion failed at %s:%d. Aborting.\n"), f, l); GNUNET_abort_(); } } while(0)
- /**
- * @ingroup logging
- * Use this for fatal errors that cannot be handled
- *
- * @param cond Condition to evaluate
- * @param comp Component string to use for logging
- */
- #define GNUNET_assert_from(cond, comp) do { if (! (cond)) { GNUNET_log_from(GNUNET_ERROR_TYPE_ERROR, comp, _("Assertion failed at %s:%d. Aborting.\n"), __FILE__, __LINE__); GNUNET_abort_(); } } while(0)
- /**
- * @ingroup logging
- * Use this for internal assertion violations that are
- * not fatal (can be handled) but should not occur.
- */
- #define GNUNET_break(cond) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Assertion failed at %s:%d.\n"), __FILE__, __LINE__); } } while(0)
- /**
- * @ingroup logging
- * Use this for assertion violations caused by other
- * peers (i.e. protocol violations). We do not want to
- * confuse end-users (say, some other peer runs an
- * older, broken or incompatible GNUnet version), but
- * we still want to see these problems during
- * development and testing. "OP == other peer".
- */
- #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)
- /**
- * @ingroup logging
- * Log an error message at log-level 'level' that indicates
- * a failure of the command 'cmd' with the message given
- * by strerror(errno).
- */
- #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)
- /**
- * @ingroup logging
- * Log an error message at log-level 'level' that indicates
- * a failure of the command 'cmd' with the message given
- * by strerror(errno).
- */
- #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)
- /**
- * @ingroup logging
- * Log an error message at log-level 'level' that indicates
- * a failure of the command 'cmd' with the message given
- * by strerror(errno).
- */
- #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)
- /**
- * @ingroup logging
- * Log an error message at log-level 'level' that indicates
- * a failure of the command 'cmd' with the message given
- * by strerror(errno).
- */
- #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)
- /* ************************* endianess conversion ****************** */
- /**
- * Convert unsigned 64-bit integer to network byte order.
- *
- * @param n
- * The value in host byte order.
- *
- * @return The same value in network byte order.
- */
- uint64_t
- GNUNET_htonll (uint64_t n);
- /**
- * Convert unsigned 64-bit integer to host byte order.
- *
- * @param n
- * The value in network byte order.
- *
- * @return The same value in host byte order.
- */
- uint64_t
- GNUNET_ntohll (uint64_t n);
- /**
- * Convert double to network byte order.
- *
- * @param d
- * The value in host byte order.
- *
- * @return The same value in network byte order.
- */
- double
- GNUNET_hton_double (double d);
- /**
- * Convert double to host byte order
- *
- * @param d
- * The value in network byte order.
- *
- * @return The same value in host byte order.
- */
- double
- GNUNET_ntoh_double (double d);
- /* ************************* allocation functions ****************** */
- /**
- * @ingroup memory
- * Maximum allocation with GNUNET_malloc macro.
- */
- #define GNUNET_MAX_MALLOC_CHECKED (1024 * 1024 * 40)
- /**
- * @ingroup memory
- * Allocate a struct or union of the given @a type.
- * Wrapper around #GNUNET_malloc that returns a pointer
- * to the newly created object of the correct type.
- *
- * @param type name of the struct or union, i.e. pass 'struct Foo'.
- */
- #define GNUNET_new(type) (type *) GNUNET_malloc (sizeof (type))
- /**
- * Compare memory in @a a and @a b, where both must be of
- * the same pointer type.
- */
- #define GNUNET_memcmp(a,b) ({ \
- const typeof(*b) * _a = (a); \
- const typeof(*a) * _b = (b); \
- memcmp(_a, \
- _b, \
- sizeof (*a)); })
- /**
- * Check that memory in @a a is all zeros. @a a must be a pointer.
- *
- * @param a pointer to a struct which should be tested for the
- * entire memory being zero'ed out.
- */
- #define GNUNET_is_zero(a) ({ \
- static const typeof(*a) _z; \
- memcmp((a), \
- &_z, \
- sizeof (_z)); })
- /**
- * Call memcpy() but check for @a n being 0 first. In the latter
- * case, it is now safe to pass NULL for @a src or @a dst.
- * Unlike traditional memcpy(), returns nothing.
- *
- * @param dst destination of the copy, may be NULL if @a n is zero
- * @param src source of the copy, may be NULL if @a n is zero
- * @param n number of bytes to copy
- */
- #define GNUNET_memcpy(dst,src,n) do { if (0 != n) { (void) memcpy (dst,src,n); } } while (0)
- /**
- * @ingroup memory
- * Allocate a size @a n array with structs or unions of the given @a type.
- * Wrapper around #GNUNET_malloc that returns a pointer
- * to the newly created objects of the correct type.
- *
- * @param n number of elements in the array
- * @param type name of the struct or union, i.e. pass 'struct Foo'.
- */
- #define GNUNET_new_array(n, type) (type *) GNUNET_malloc ((n) * sizeof (type))
- /**
- * @ingroup memory
- * Allocate a size @a n times @a m array
- * with structs or unions of the given @a type.
- *
- * @param n size of the first dimension
- * @param m size of the second dimension
- * @param type name of the struct or union, i.e. pass 'struct Foo'.
- */
- #define GNUNET_new_array_2d(n, m, type) (type **) GNUNET_xnew_array_2d_ (n, m, sizeof (type), __FILE__, __LINE__)
- /**
- * @ingroup memory
- * Allocate a size @a n times @a m times @a o array
- * with structs or unions of the given @a type.
- *
- * @param n size of the first dimension
- * @param m size of the second dimension
- * @param o size of the third dimension
- * @param type name of the struct or union, i.e. pass 'struct Foo'.
- */
- #define GNUNET_new_array_3d(n, m, o, type) (type ***) GNUNET_xnew_array_3d_ (n, m, o, sizeof (type), __FILE__, __LINE__)
- /**
- * @ingroup memory
- * Wrapper around malloc. Allocates size bytes of memory.
- * The memory will be zero'ed out.
- *
- * @param size the number of bytes to allocate, must be
- * smaller than 40 MB.
- * @return pointer to size bytes of memory, never NULL (!)
- */
- #define GNUNET_malloc(size) GNUNET_xmalloc_(size, __FILE__, __LINE__)
- /**
- * @ingroup memory
- * Allocate and initialize a block of memory.
- *
- * @param buf data to initalize the block with
- * @param size the number of bytes in buf (and size of the allocation)
- * @return pointer to size bytes of memory, never NULL (!)
- */
- #define GNUNET_memdup(buf,size) GNUNET_xmemdup_(buf, size, __FILE__, __LINE__)
- /**
- * @ingroup memory
- * Wrapper around malloc. Allocates size bytes of memory.
- * The memory will be zero'ed out.
- *
- * @param size the number of bytes to allocate
- * @return pointer to size bytes of memory, NULL if we do not have enough memory
- */
- #define GNUNET_malloc_large(size) GNUNET_xmalloc_unchecked_(size, __FILE__, __LINE__)
- /**
- * @ingroup memory
- * Wrapper around realloc. Reallocates size bytes of memory.
- * The content of the intersection of the new and old size will be unchanged.
- *
- * @param ptr the pointer to reallocate
- * @param size the number of bytes to reallocate
- * @return pointer to size bytes of memory
- */
- #define GNUNET_realloc(ptr, size) GNUNET_xrealloc_(ptr, size, __FILE__, __LINE__)
- /**
- * @ingroup memory
- * Wrapper around free. Frees the memory referred to by ptr.
- * Note that it is generally better to free memory that was
- * allocated with #GNUNET_array_grow using #GNUNET_array_grow(mem, size, 0) instead of #GNUNET_free.
- *
- * @param ptr location where to free the memory. ptr must have
- * been returned by #GNUNET_strdup, #GNUNET_strndup, #GNUNET_malloc or #GNUNET_array_grow earlier.
- */
- #define GNUNET_free(ptr) GNUNET_xfree_(ptr, __FILE__, __LINE__)
- /**
- * @ingroup memory
- * Free the memory pointed to by ptr if ptr is not NULL.
- * Equivalent to `if (NULL != ptr) GNUNET_free(ptr)`.
- *
- * @param ptr the location in memory to free
- */
- #define GNUNET_free_non_null(ptr) do { void * __x__ = ptr; if (__x__ != NULL) { GNUNET_free(__x__); } } while(0)
- /**
- * @ingroup memory
- * Wrapper around #GNUNET_xstrdup_. Makes a copy of the zero-terminated string
- * pointed to by a.
- *
- * @param a pointer to a zero-terminated string
- * @return a copy of the string including zero-termination
- */
- #define GNUNET_strdup(a) GNUNET_xstrdup_(a,__FILE__,__LINE__)
- /**
- * @ingroup memory
- * Wrapper around #GNUNET_xstrndup_. Makes a partial copy of the string
- * pointed to by a.
- *
- * @param a pointer to a string
- * @param length of the string to duplicate
- * @return a partial copy of the string including zero-termination
- */
- #define GNUNET_strndup(a,length) GNUNET_xstrndup_(a,length,__FILE__,__LINE__)
- /**
- * @ingroup memory
- * Grow a well-typed (!) array. This is a convenience
- * method to grow a vector @a arr of size @a size
- * to the new (target) size @a tsize.
- * <p>
- *
- * Example (simple, well-typed stack):
- *
- * <pre>
- * static struct foo * myVector = NULL;
- * static int myVecLen = 0;
- *
- * static void push(struct foo * elem) {
- * GNUNET_array_grow(myVector, myVecLen, myVecLen+1);
- * GNUNET_memcpy(&myVector[myVecLen-1], elem, sizeof(struct foo));
- * }
- *
- * static void pop(struct foo * elem) {
- * if (myVecLen == 0) die();
- * GNUNET_memcpy(elem, myVector[myVecLen-1], sizeof(struct foo));
- * GNUNET_array_grow(myVector, myVecLen, myVecLen-1);
- * }
- * </pre>
- *
- * @param arr base-pointer of the vector, may be NULL if size is 0;
- * will be updated to reflect the new address. The TYPE of
- * arr is important since size is the number of elements and
- * not the size in bytes
- * @param size the number of elements in the existing vector (number
- * of elements to copy over), will be updated with the new
- * array size
- * @param tsize the target size for the resulting vector, use 0 to
- * free the vector (then, arr will be NULL afterwards).
- */
- #define GNUNET_array_grow(arr,size,tsize) GNUNET_xgrow_((void**)&(arr), sizeof((arr)[0]), &size, tsize, __FILE__, __LINE__)
- /**
- * @ingroup memory
- * Append an element to a list (growing the list by one).
- *
- * @param arr base-pointer of the vector, may be NULL if size is 0;
- * will be updated to reflect the new address. The TYPE of
- * arr is important since size is the number of elements and
- * not the size in bytes
- * @param size the number of elements in the existing vector (number
- * of elements to copy over), will be updated with the new
- * array size
- * @param element the element that will be appended to the array
- */
- #define GNUNET_array_append(arr,size,element) do { GNUNET_array_grow(arr,size,size+1); (arr)[size-1] = element; } while(0)
- /**
- * @ingroup memory
- * Like snprintf, just aborts if the buffer is of insufficient size.
- *
- * @param buf pointer to buffer that is written to
- * @param size number of bytes in @a buf
- * @param format format strings
- * @param ... data for format string
- * @return number of bytes written to buf or negative value on error
- */
- int
- GNUNET_snprintf (char *buf, size_t size, const char *format, ...);
- /**
- * @ingroup memory
- * Like asprintf, just portable.
- *
- * @param buf set to a buffer of sufficient size (allocated, caller must free)
- * @param format format string (see printf, fprintf, etc.)
- * @param ... data for format string
- * @return number of bytes in "*buf" excluding 0-termination
- */
- int
- GNUNET_asprintf (char **buf, const char *format, ...);
- /* ************** internal implementations, use macros above! ************** */
- /**
- * Allocate memory. Checks the return value, aborts if no more
- * memory is available. Don't use GNUNET_xmalloc_ directly. Use the
- * #GNUNET_malloc macro.
- * The memory will be zero'ed out.
- *
- * @param size number of bytes to allocate
- * @param filename where is this call being made (for debugging)
- * @param linenumber line where this call is being made (for debugging)
- * @return allocated memory, never NULL
- */
- void *
- GNUNET_xmalloc_ (size_t size, const char *filename, int linenumber);
- /**
- * Allocate memory for a two dimensional array in one block
- * and set up pointers. Aborts if no more memory is available.
- * Don't use GNUNET_xnew_array_2d_ directly. Use the
- * #GNUNET_new_array_2d macro.
- * The memory of the elements will be zero'ed out.
- *
- * @param n size of the first dimension
- * @param m size of the second dimension
- * @param elementSize size of a single element in bytes
- * @param filename where is this call being made (for debugging)
- * @param linenumber line where this call is being made (for debugging)
- * @return allocated memory, never NULL
- */
- void **
- GNUNET_xnew_array_2d_ (size_t n, size_t m, size_t elementSize,
- const char *filename, int linenumber);
- /**
- * Allocate memory for a three dimensional array in one block
- * and set up pointers. Aborts if no more memory is available.
- * Don't use GNUNET_xnew_array_3d_ directly. Use the
- * #GNUNET_new_array_3d macro.
- * The memory of the elements will be zero'ed out.
- *
- * @param n size of the first dimension
- * @param m size of the second dimension
- * @param o size of the third dimension
- * @param elementSize size of a single element in bytes
- * @param filename where is this call being made (for debugging)
- * @param linenumber line where this call is being made (for debugging)
- * @return allocated memory, never NULL
- */
- void ***
- GNUNET_xnew_array_3d_ (size_t n, size_t m, size_t o, size_t elementSize,
- const char *filename, int linenumber);
- /**
- * Allocate and initialize memory. Checks the return value, aborts if no more
- * memory is available. Don't use GNUNET_xmemdup_ directly. Use the
- * #GNUNET_memdup macro.
- *
- * @param buf buffer to initialize from (must contain size bytes)
- * @param size number of bytes to allocate
- * @param filename where is this call being made (for debugging)
- * @param linenumber line where this call is being made (for debugging)
- * @return allocated memory, never NULL
- */
- void *
- GNUNET_xmemdup_ (const void *buf, size_t size, const char *filename,
- int linenumber);
- /**
- * Allocate memory. This function does not check if the allocation
- * request is within reasonable bounds, allowing allocations larger
- * than 40 MB. If you don't expect the possibility of very large
- * allocations, use #GNUNET_malloc instead. The memory will be zero'ed
- * out.
- *
- * @param size number of bytes to allocate
- * @param filename where is this call being made (for debugging)
- * @param linenumber line where this call is being made (for debugging)
- * @return pointer to size bytes of memory, NULL if we do not have enough memory
- */
- void *
- GNUNET_xmalloc_unchecked_ (size_t size, const char *filename, int linenumber);
- /**
- * Reallocate memory. Checks the return value, aborts if no more
- * memory is available.
- */
- void *
- GNUNET_xrealloc_ (void *ptr, size_t n, const char *filename, int linenumber);
- /**
- * Free memory. Merely a wrapper for the case that we
- * want to keep track of allocations. Don't use GNUNET_xfree_
- * directly. Use the #GNUNET_free macro.
- *
- * @param ptr pointer to memory to free
- * @param filename where is this call being made (for debugging)
- * @param linenumber line where this call is being made (for debugging)
- */
- void
- GNUNET_xfree_ (void *ptr, const char *filename, int linenumber);
- /**
- * Dup a string. Don't call GNUNET_xstrdup_ directly. Use the #GNUNET_strdup macro.
- * @param str string to duplicate
- * @param filename where is this call being made (for debugging)
- * @param linenumber line where this call is being made (for debugging)
- * @return the duplicated string
- */
- char *
- GNUNET_xstrdup_ (const char *str, const char *filename, int linenumber);
- /**
- * Dup partially a string. Don't call GNUNET_xstrndup_ directly. Use the #GNUNET_strndup macro.
- *
- * @param str string to duplicate
- * @param len length of the string to duplicate
- * @param filename where is this call being made (for debugging)
- * @param linenumber line where this call is being made (for debugging)
- * @return the duplicated string
- */
- char *
- GNUNET_xstrndup_ (const char *str, size_t len, const char *filename,
- int linenumber);
- /**
- * Grow an array, the new elements are zeroed out.
- * Grows old by (*oldCount-newCount)*elementSize
- * bytes and sets *oldCount to newCount.
- *
- * Don't call GNUNET_xgrow_ directly. Use the #GNUNET_array_grow macro.
- *
- * @param old address of the pointer to the array
- * *old may be NULL
- * @param elementSize the size of the elements of the array
- * @param oldCount address of the number of elements in the *old array
- * @param newCount number of elements in the new array, may be 0 (then *old will be NULL afterwards)
- * @param filename where is this call being made (for debugging)
- * @param linenumber line where this call is being made (for debugging)
- */
- void
- GNUNET_xgrow_ (void **old, size_t elementSize, unsigned int *oldCount,
- unsigned int newCount, const char *filename, int linenumber);
- /**
- * @ingroup memory
- * Create a copy of the given message.
- *
- * @param msg message to copy
- * @return duplicate of the message
- */
- struct GNUNET_MessageHeader *
- GNUNET_copy_message (const struct GNUNET_MessageHeader *msg);
- /**
- * Set the async scope for the current thread.
- *
- * @param aid the async scope identifier
- * @param old_scope[out] location to save the old scope
- */
- void
- GNUNET_async_scope_enter (const struct GNUNET_AsyncScopeId *aid,
- struct GNUNET_AsyncScopeSave *old_scope);
- /**
- * Clear the current thread's async scope.
- *
- * @param old_scope scope to restore
- */
- void
- GNUNET_async_scope_restore (struct GNUNET_AsyncScopeSave *old_scope);
- /**
- * Get the current async scope.
- *
- * @param[out] scope_ret pointer to where the result is stored
- */
- void
- GNUNET_async_scope_get (struct GNUNET_AsyncScopeSave *scope_ret);
- /**
- * Generate a fresh async scope identifier.
- *
- * @param[out] aid_ret pointer to where the result is stored
- */
- void
- GNUNET_async_scope_fresh (struct GNUNET_AsyncScopeId *aid_ret);
- #if __STDC_VERSION__ < 199901L
- #if __GNUC__ >= 2
- #define __func__ __FUNCTION__
- #else
- #define __func__ "<unknown>"
- #endif
- #endif
- /**
- * Valid task priorities. Use these, do not pass random integers!
- * For various reasons (#3862 -- building with QT Creator, and
- * our restricted cross-compilation with emscripten) this cannot
- * be in gnunet_scheduler_lib.h, but it works if we declare it here.
- * Naturally, logically this is part of the scheduler.
- */
- enum GNUNET_SCHEDULER_Priority
- {
- /**
- * Run with the same priority as the current job.
- */
- GNUNET_SCHEDULER_PRIORITY_KEEP = 0,
- /**
- * Run when otherwise idle.
- */
- GNUNET_SCHEDULER_PRIORITY_IDLE = 1,
- /**
- * Run as background job (higher than idle,
- * lower than default).
- */
- GNUNET_SCHEDULER_PRIORITY_BACKGROUND = 2,
- /**
- * Run with the default priority (normal
- * P2P operations). Any task that is scheduled
- * without an explicit priority being specified
- * will run with this priority.
- */
- GNUNET_SCHEDULER_PRIORITY_DEFAULT = 3,
- /**
- * Run with high priority (important requests).
- * Higher than DEFAULT.
- */
- GNUNET_SCHEDULER_PRIORITY_HIGH = 4,
- /**
- * Run with priority for interactive tasks.
- * Higher than "HIGH".
- */
- GNUNET_SCHEDULER_PRIORITY_UI = 5,
- /**
- * Run with priority for urgent tasks. Use
- * for things like aborts and shutdowns that
- * need to preempt "UI"-level tasks.
- * Higher than "UI".
- */
- GNUNET_SCHEDULER_PRIORITY_URGENT = 6,
- /**
- * This is an internal priority level that is only used for tasks
- * that are being triggered due to shutdown (they have automatically
- * highest priority). User code must not use this priority level
- * directly. Tasks run with this priority level that internally
- * schedule other tasks will see their original priority level
- * be inherited (unless otherwise specified).
- */
- GNUNET_SCHEDULER_PRIORITY_SHUTDOWN = 7,
- /**
- * Number of priorities (must be the last priority).
- * This priority must not be used by clients.
- */
- GNUNET_SCHEDULER_PRIORITY_COUNT = 8
- };
- #if 0 /* keep Emacsens' auto-indent happy */
- {
- #endif
- #ifdef __cplusplus
- }
- #endif
- #endif /* GNUNET_COMMON_H */
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