libosmocore 0.9.6-23.20170220git32ee5af8.fc42
Osmocom core library
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utils.h
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1#pragma once
2
3#include <osmocom/core/backtrace.h>
4#include <osmocom/core/talloc.h>
5
13#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
15#define OSMO_MAX(a, b) ((a) >= (b) ? (a) : (b))
17#define OSMO_MIN(a, b) ((a) >= (b) ? (b) : (a))
19#define OSMO_STRINGIFY(x) #x
21#define OSMO_VALUE_STRING(x) { x, OSMO_STRINGIFY(x) }
22
23#include <stdint.h>
24#include <stdio.h>
25
28 unsigned int value;
29 const char *str;
30};
31
32const char *get_value_string(const struct value_string *vs, uint32_t val);
33const char *get_value_string_or_null(const struct value_string *vs,
34 uint32_t val);
35
36int get_string_value(const struct value_string *vs, const char *str);
37
38char osmo_bcd2char(uint8_t bcd);
39/* only works for numbers in ascci */
40uint8_t osmo_char2bcd(char c);
41
42int osmo_hexparse(const char *str, uint8_t *b, int max_len);
43
44char *osmo_ubit_dump(const uint8_t *bits, unsigned int len);
45char *osmo_hexdump(const unsigned char *buf, int len);
46char *osmo_hexdump_nospc(const unsigned char *buf, int len);
47char *osmo_osmo_hexdump_nospc(const unsigned char *buf, int len) __attribute__((__deprecated__));
48
49#define osmo_static_assert(exp, name) typedef int dummy##name [(exp) ? 1 : -1] __attribute__((__unused__));
50
51void osmo_str2lower(char *out, const char *in);
52void osmo_str2upper(char *out, const char *in);
53
54#define OSMO_SNPRINTF_RET(ret, rem, offset, len) \
55do { \
56 len += ret; \
57 if (ret > rem) \
58 ret = rem; \
59 offset += ret; \
60 rem -= ret; \
61} while (0)
62
68#define OSMO_ASSERT(exp) \
69 if (!(exp)) { \
70 fprintf(stderr, "Assert failed %s %s:%d\n", #exp, __BASE_FILE__, __LINE__); \
71 osmo_generate_backtrace(); \
72 abort(); \
73 }
74
79static inline void osmo_talloc_replace_string(void *ctx, char **dst, const char *newstr)
80{
81 if (*dst)
82 talloc_free(*dst);
83 *dst = talloc_strdup(ctx, newstr);
84}
85
86int osmo_constant_time_cmp(const uint8_t *exp, const uint8_t *rel, const int count);
87uint64_t osmo_decode_big_endian(const uint8_t *data, size_t data_len);
88uint8_t *osmo_encode_big_endian(uint64_t value, size_t data_len);
89
90size_t osmo_strlcpy(char *dst, const char *src, size_t siz);
91
size_t osmo_strlcpy(char *dst, const char *src, size_t siz)
Copy a C-string into a sized buffer.
Definition utils.c:365
static void osmo_talloc_replace_string(void *ctx, char **dst, const char *newstr)
Definition utils.h:79
int get_string_value(const struct value_string *vs, const char *str)
get numeric value for given human-readable string
Definition utils.c:87
uint64_t osmo_decode_big_endian(const uint8_t *data, size_t data_len)
Generic retrieval of 1..8 bytes as big-endian uint64_t.
Definition utils.c:326
char * osmo_hexdump_nospc(const unsigned char *buf, int len)
Convert binary sequence to hexadecimal ASCII string.
Definition utils.c:251
char * osmo_ubit_dump(const uint8_t *bits, unsigned int len)
Convert a sequence of unpacked bits to ASCII string.
Definition utils.c:200
int osmo_constant_time_cmp(const uint8_t *exp, const uint8_t *rel, const int count)
Wishful thinking to generate a constant time compare.
Definition utils.c:304
char osmo_bcd2char(uint8_t bcd)
Convert BCD-encoded digit into printable character.
Definition utils.c:104
void osmo_str2lower(char *out, const char *in)
Convert an entire string to lower case.
Definition utils.c:271
uint8_t * osmo_encode_big_endian(uint64_t value, size_t data_len)
Generic big-endian encoding of big endian number up to 64bit.
Definition utils.c:347
void osmo_str2upper(char *out, const char *in)
Convert an entire string to upper case.
Definition utils.c:284
const char * get_value_string_or_null(const struct value_string *vs, uint32_t val)
get human-readable string or NULL for given value
Definition utils.c:67
int osmo_hexparse(const char *str, uint8_t *b, int max_len)
Parse a string containing hexadecimal digits.
Definition utils.c:127
char * osmo_hexdump(const unsigned char *buf, int len)
Convert binary sequence to hexadecimal ASCII string.
Definition utils.c:238
uint8_t osmo_char2bcd(char c)
Convert number in ASCII to BCD value.
Definition utils.c:116
const char * get_value_string(const struct value_string *vs, uint32_t val)
get human-readable string for given value
Definition utils.c:51
A mapping between human-readable string and numeric value.
Definition utils.h:27
unsigned int value
numeric value
Definition utils.h:28
const char * str
human-readable string
Definition utils.h:29