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00013 #ifndef _UTIL_H
00014 #define _UTIL_H
00015
00016 #include <stdbool.h>
00017 #include <time.h>
00018
00019 #define dprintf(X,Y) fprintf(stderr, (X), (Y))
00020
00021
00022 #define LDNS_VERSION "1.2.1 "
00023
00027 #ifdef S_SPLINT_S
00028 #define INLINE
00029 #else
00030 #define INLINE static inline
00031 #endif
00032
00036 #define LDNS_MALLOC(type) LDNS_XMALLOC(type, 1)
00037
00038 #define LDNS_XMALLOC(type, count) ((type *) malloc((count) * sizeof(type)))
00039
00040 #define LDNS_REALLOC(ptr, type) LDNS_XREALLOC((ptr), type, 1)
00041
00042 #define LDNS_XREALLOC(ptr, type, count) \
00043 ((type *) realloc((ptr), (count) * sizeof(type)))
00044
00045 #define LDNS_FREE(ptr) \
00046 do { free((ptr)); (ptr) = NULL; } while (0)
00047
00048 #define LDNS_DEP printf("DEPRECATED FUNCTION!\n");
00049
00050
00051
00052
00053
00054 INLINE uint16_t
00055 ldns_read_uint16(const void *src)
00056 {
00057 #ifdef ALLOW_UNALIGNED_ACCESSES
00058 return ntohs(*(uint16_t *) src);
00059 #else
00060 uint8_t *p = (uint8_t *) src;
00061 return ((uint16_t) p[0] << 8) | (uint16_t) p[1];
00062 #endif
00063 }
00064
00065 INLINE uint32_t
00066 ldns_read_uint32(const void *src)
00067 {
00068 #ifdef ALLOW_UNALIGNED_ACCESSES
00069 return ntohl(*(uint32_t *) src);
00070 #else
00071 uint8_t *p = (uint8_t *) src;
00072 return ( ((uint32_t) p[0] << 24)
00073 | ((uint32_t) p[1] << 16)
00074 | ((uint32_t) p[2] << 8)
00075 | (uint32_t) p[3]);
00076 #endif
00077 }
00078
00079
00080
00081
00082
00083 INLINE void
00084 ldns_write_uint16(void *dst, uint16_t data)
00085 {
00086 #ifdef ALLOW_UNALIGNED_ACCESSES
00087 * (uint16_t *) dst = htons(data);
00088 #else
00089 uint8_t *p = (uint8_t *) dst;
00090 p[0] = (uint8_t) ((data >> 8) & 0xff);
00091 p[1] = (uint8_t) (data & 0xff);
00092 #endif
00093 }
00094
00095 INLINE void
00096 ldns_write_uint32(void *dst, uint32_t data)
00097 {
00098 #ifdef ALLOW_UNALIGNED_ACCESSES
00099 * (uint32_t *) dst = htonl(data);
00100 #else
00101 uint8_t *p = (uint8_t *) dst;
00102 p[0] = (uint8_t) ((data >> 24) & 0xff);
00103 p[1] = (uint8_t) ((data >> 16) & 0xff);
00104 p[2] = (uint8_t) ((data >> 8) & 0xff);
00105 p[3] = (uint8_t) (data & 0xff);
00106 #endif
00107 }
00108
00109
00110 INLINE void
00111 ldns_write_uint64_as_uint48(void *dst, uint64_t data)
00112 {
00113 uint8_t *p = (uint8_t *) dst;
00114 p[0] = (uint8_t) ((data >> 40) & 0xff);
00115 p[1] = (uint8_t) ((data >> 32) & 0xff);
00116 p[2] = (uint8_t) ((data >> 24) & 0xff);
00117 p[3] = (uint8_t) ((data >> 16) & 0xff);
00118 p[4] = (uint8_t) ((data >> 8) & 0xff);
00119 p[5] = (uint8_t) (data & 0xff);
00120 }
00121
00122
00129 struct ldns_schwartzian_compare_struct {
00130 void *original_object;
00131 void *transformed_object;
00132 };
00133
00141 struct ldns_struct_lookup_table {
00142 int id;
00143 const char *name;
00144 };
00145 typedef struct ldns_struct_lookup_table ldns_lookup_table;
00146
00153 ldns_lookup_table *ldns_lookup_by_name(ldns_lookup_table table[],
00154 const char *name);
00155
00162 ldns_lookup_table *ldns_lookup_by_id(ldns_lookup_table table[], int id);
00163
00172 int ldns_get_bit(uint8_t bits[], size_t index);
00173
00174
00183 int ldns_get_bit_r(uint8_t bits[], size_t index);
00184
00195 void ldns_set_bit(uint8_t *byte, int bit_nr, bool value);
00196
00201
00202 INLINE long
00203 ldns_power(long a, long b) {
00204 long result = 1;
00205 while (b > 0) {
00206 if (b & 1) {
00207 result *= a;
00208 if (b == 1) {
00209 return result;
00210 }
00211 }
00212 a *= a;
00213 b /= 2;
00214 }
00215 return result;
00216 }
00217
00223 int ldns_hexdigit_to_int(char ch);
00224
00230 char ldns_int_to_hexdigit(int ch);
00231
00236 const char * ldns_version(void);
00237
00244 time_t mktime_from_utc(const struct tm *tm);
00245
00246 #endif