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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare
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| Current Path : /proc/self/root/usr/include/net-snmp/library/ |
| Current File : //proc/self/root/usr/include/net-snmp/library/tools.h |
/**
* @file library/tools.h
* @defgroup util Memory Utility Routines
* @ingroup library
* @{
*/
#ifndef _TOOLS_H
#define _TOOLS_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* General acros and constants.
*/
#ifdef WIN32
# define SNMP_MAXPATH MAX_PATH
#else
# ifdef PATH_MAX
# define SNMP_MAXPATH PATH_MAX
# else
# ifdef MAXPATHLEN
# define SNMP_MAXPATH MAXPATHLEN
# else
# define SNMP_MAXPATH 1024 /* Should be safe enough */
# endif
# endif
#endif
#define SNMP_MAXBUF (1024 * 4)
#define SNMP_MAXBUF_MEDIUM 1024
#define SNMP_MAXBUF_SMALL 512
#define SNMP_MAXBUF_MESSAGE 1500
#define SNMP_MAXOID 64
#define SNMP_MAX_CMDLINE_OIDS 128
#define SNMP_FILEMODE_CLOSED 0600
#define SNMP_FILEMODE_OPEN 0644
#define BYTESIZE(bitsize) ((bitsize + 7) >> 3)
#define ROUNDUP8(x) ( ( (x+7) >> 3 ) * 8 )
#define SNMP_STRORNULL(x) ( x ? x : "(null)")
/** @def SNMP_FREE(s)
Frees a pointer only if it is !NULL and sets its value to NULL */
#define SNMP_FREE(s) do { if (s) { free((void *)s); s=NULL; } } while(0)
/** @def SNMP_SWIPE_MEM(n, s)
Frees pointer n only if it is !NULL, sets n to s and sets s to NULL */
#define SNMP_SWIPE_MEM(n,s) do { if (n) free((void *)n); n = s; s=NULL; } while(0)
/*
* XXX Not optimal everywhere.
*/
/** @def SNMP_MALLOC_STRUCT(s)
Mallocs memory of sizeof(struct s), zeros it and returns a pointer to it. */
#define SNMP_MALLOC_STRUCT(s) (struct s *) calloc(1, sizeof(struct s))
/** @def SNMP_MALLOC_TYPEDEF(t)
Mallocs memory of sizeof(t), zeros it and returns a pointer to it. */
#define SNMP_MALLOC_TYPEDEF(td) (td *) calloc(1, sizeof(td))
/** @def SNMP_ZERO(s,l)
Zeros l bytes of memory starting at s. */
#define SNMP_ZERO(s,l) do { if (s) memset(s, 0, l); } while(0)
#define TOUPPER(c) (c >= 'a' && c <= 'z' ? c - ('a' - 'A') : c)
#define TOLOWER(c) (c >= 'A' && c <= 'Z' ? c + ('a' - 'A') : c)
#define HEX2VAL(s) \
((isalpha(s) ? (TOLOWER(s)-'a'+10) : (TOLOWER(s)-'0')) & 0xf)
#define VAL2HEX(s) ( (s) + (((s) >= 10) ? ('a'-10) : '0') )
/** @def SNMP_MAX(a, b)
Computers the maximum of a and b. */
#define SNMP_MAX(a,b) ((a) > (b) ? (a) : (b))
/** @def SNMP_MIN(a, b)
Computers the minimum of a and b. */
#define SNMP_MIN(a,b) ((a) > (b) ? (b) : (a))
/** @def SNMP_MACRO_VAL_TO_STR(s)
* Expands to string with value of the s.
* If s is macro, the resulting string is value of the macro.
* Example:
* #define TEST 1234
* SNMP_MACRO_VAL_TO_STR(TEST) expands to "1234"
* SNMP_MACRO_VAL_TO_STR(TEST+1) expands to "1234+1"
*/
#define SNMP_MACRO_VAL_TO_STR(s) SNMP_MACRO_VAL_TO_STR_PRIV(s)
#define SNMP_MACRO_VAL_TO_STR_PRIV(s) #s
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
/*
* QUIT the FUNction:
* e Error code variable
* l Label to goto to cleanup and get out of the function.
*
* XXX It would be nice if the label could be constructed by the
* preprocessor in context. Limited to a single error return value.
* Temporary hack at best.
*/
#define QUITFUN(e, l) \
if ( (e) != SNMPERR_SUCCESS) { \
rval = SNMPERR_GENERR; \
goto l ; \
}
/*
* DIFFTIMEVAL
* Set <diff> to the difference between <now> (current) and <then> (past).
*
* ASSUMES that all inputs are (struct timeval)'s.
* Cf. system.c:calculate_time_diff().
*/
#define DIFFTIMEVAL(now, then, diff) \
{ \
now.tv_sec--; \
now.tv_usec += 1000000L; \
diff.tv_sec = now.tv_sec - then.tv_sec; \
diff.tv_usec = now.tv_usec - then.tv_usec; \
if (diff.tv_usec > 1000000L){ \
diff.tv_usec -= 1000000L; \
diff.tv_sec++; \
} \
}
/*
* ISTRANSFORM
* ASSUMES the minimum length for ttype and toid.
*/
#define USM_LENGTH_OID_TRANSFORM 10
#define ISTRANSFORM(ttype, toid) \
!snmp_oid_compare(ttype, USM_LENGTH_OID_TRANSFORM, \
usm ## toid ## Protocol, USM_LENGTH_OID_TRANSFORM)
#define ENGINETIME_MAX 2147483647 /* ((2^31)-1) */
#define ENGINEBOOT_MAX 2147483647 /* ((2^31)-1) */
/*
* Prototypes.
*/
int snmp_realloc(u_char ** buf, size_t * buf_len);
void free_zero(void *buf, size_t size);
u_char *malloc_random(size_t * size);
u_char *malloc_zero(size_t size);
int memdup(u_char ** to, const u_char * from, size_t size);
u_int binary_to_hex(const u_char * input, size_t len,
char **output);
/* preferred */
int netsnmp_hex_to_binary(u_char ** buf, size_t * buf_len,
size_t * offset, int allow_realloc,
const char *hex, const char *delim);
/* calls netsnmp_hex_to_binary w/delim of " " */
int snmp_hex_to_binary(u_char ** buf, size_t * buf_len,
size_t * offset, int allow_realloc,
const char *hex);
/* handles odd lengths */
int hex_to_binary2(const u_char * input, size_t len,
char **output);
int snmp_decimal_to_binary(u_char ** buf, size_t * buf_len,
size_t * out_len,
int allow_realloc,
const char *decimal);
#define snmp_cstrcat(b,l,o,a,s) snmp_strcat(b,l,o,a,(const u_char *)s)
int snmp_strcat(u_char ** buf, size_t * buf_len,
size_t * out_len, int allow_realloc,
const u_char * s);
char *netsnmp_strdup_and_null(const u_char * from,
size_t from_len);
void dump_chunk(const char *debugtoken, const char *title,
const u_char * buf, int size);
char *dump_snmpEngineID(const u_char * buf, size_t * buflen);
typedef void *marker_t;
marker_t atime_newMarker(void);
void atime_setMarker(marker_t pm);
long atime_diff(marker_t first, marker_t second);
u_long uatime_diff(marker_t first, marker_t second); /* 1/1000th sec */
u_long uatime_hdiff(marker_t first, marker_t second); /* 1/100th sec */
int atime_ready(marker_t pm, int deltaT);
int uatime_ready(marker_t pm, unsigned int deltaT);
int marker_tticks(marker_t pm);
int timeval_tticks(struct timeval *tv);
char *netsnmp_getenv(const char *name);
int netsnmp_addrstr_hton(char *ptr, size_t len);
#ifdef __cplusplus
}
#endif
#endif /* _TOOLS_H */
/* @} */
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