1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include <stdio.h>
#include <osmocom/core/utils.h>
/*! \addtogroup utils
* @{
*/
/*! \file utils.c */
static char namebuf[255];
/*! \brief get human-readable string for given value
* \param[in] vs Array of value_string tuples
* \param[in] val Value to be converted
* \returns pointer to human-readable string
*/
const char *get_value_string(const struct value_string *vs, uint32_t val)
{
int i;
for (i = 0;; i++) {
if (vs[i].value == 0 && vs[i].str == NULL)
break;
if (vs[i].value == val)
return vs[i].str;
}
snprintf(namebuf, sizeof(namebuf), "unknown 0x%x", val);
namebuf[sizeof(namebuf) - 1] = '\0';
return namebuf;
}
/*! \brief get numeric value for given human-readable string
* \param[in] vs Array of value_string tuples
* \param[in] str human-readable string
* \returns numeric value (>0) or negative numer in case of error
*/
int get_string_value(const struct value_string *vs, const char *str)
{
int i;
for (i = 0;; i++) {
if (vs[i].value == 0 && vs[i].str == NULL)
break;
if (!strcasecmp(vs[i].str, str))
return vs[i].value;
}
return -EINVAL;
}
/*! \brief Convert BCD-encoded digit into printable character
* \param[in] bcd A single BCD-encoded digit
* \returns single printable character
*/
char osmo_bcd2char(uint8_t bcd)
{
if (bcd < 0xa)
return '0' + bcd;
else
return 'A' + (bcd - 0xa);
}
/*! \brief Convert number in ASCII to BCD value
* \param[in] c ASCII character
* \returns BCD encoded value of character
*/
uint8_t osmo_char2bcd(char c)
{
return c - 0x30;
}
/*! \brief Parse a string ocntaining hexadecimal digits
* \param[in] str string containing ASCII encoded hexadecimal digits
* \param[out] b output buffer
* \param[in] max_len maximum space in output buffer
*/
int osmo_hexparse(const char *str, uint8_t *b, int max_len)
{
int i, l, v;
l = strlen(str);
if ((l&1) || ((l>>1) > max_len))
return -1;
memset(b, 0x00, max_len);
for (i=0; i<l; i++) {
char c = str[i];
if (c >= '0' && c <= '9')
v = c - '0';
else if (c >= 'a' && c <= 'f')
v = 10 + (c - 'a');
else if (c >= 'A' && c <= 'F')
v = 10 + (c - 'A');
else
return -1;
b[i>>1] |= v << (i&1 ? 0 : 4);
}
return i>>1;
}
static char hexd_buff[4096];
static char *_osmo_hexdump(const unsigned char *buf, int len, char *delim)
{
int i;
char *cur = hexd_buff;
hexd_buff[0] = 0;
for (i = 0; i < len; i++) {
int len_remain = sizeof(hexd_buff) - (cur - hexd_buff);
if (len_remain <= 0)
break;
int rc = snprintf(cur, len_remain, "%02x%s", buf[i], delim);
if (rc <= 0)
break;
cur += rc;
}
hexd_buff[sizeof(hexd_buff)-1] = 0;
return hexd_buff;
}
/*! \brief Convert a sequence of unpacked bits to ASCII string
* \param[in] bits A sequence of unpacked bits
* \param[in] len Length of bits
*/
char *osmo_ubit_dump(const uint8_t *bits, unsigned int len)
{
int i;
if (len > sizeof(hexd_buff)-1)
len = sizeof(hexd_buff)-1;
memset(hexd_buff, 0, sizeof(hexd_buff));
for (i = 0; i < len; i++) {
char outch;
switch (bits[i]) {
case 0:
outch = '0';
break;
case 0xff:
outch = '?';
break;
case 1:
outch = '1';
break;
default:
outch = 'E';
break;
}
hexd_buff[i] = outch;
}
hexd_buff[sizeof(hexd_buff)-1] = 0;
return hexd_buff;
}
/*! \brief Convert binary sequence to hexadecimal ASCII string
* \param[in] buf pointer to sequence of bytes
* \param[in] len length of buf in number of bytes
* \returns pointer to zero-terminated string
*
* This function will print a sequence of bytes as hexadecimal numbers,
* adding one space character between each byte (e.g. "1a ef d9")
*/
char *osmo_hexdump(const unsigned char *buf, int len)
{
return _osmo_hexdump(buf, len, " ");
}
/*! \brief Convert binary sequence to hexadecimal ASCII string
* \param[in] buf pointer to sequence of bytes
* \param[in] len length of buf in number of bytes
* \returns pointer to zero-terminated string
*
* This function will print a sequence of bytes as hexadecimal numbers,
* without any space character between each byte (e.g. "1aefd9")
*/
char *osmo_hexdump_nospc(const unsigned char *buf, int len)
{
return _osmo_hexdump(buf, len, "");
}
/* Compat with previous typo to preserve abi */
char *osmo_osmo_hexdump_nospc(const unsigned char *buf, int len)
__attribute__((weak, alias("osmo_hexdump_nospc")));
#include "../config.h"
#ifdef HAVE_CTYPE_H
#include <ctype.h>
/*! \brief Convert an entire string to lower case
* \param[out] out output string, caller-allocated
* \param[in] in input string
*/
void osmo_str2lower(char *out, const char *in)
{
unsigned int i;
for (i = 0; i < strlen(in); i++)
out[i] = tolower(in[i]);
out[strlen(in)] = '\0';
}
/*! \brief Convert an entire string to upper case
* \param[out] out output string, caller-allocated
* \param[in] in input string
*/
void osmo_str2upper(char *out, const char *in)
{
unsigned int i;
for (i = 0; i < strlen(in); i++)
out[i] = toupper(in[i]);
out[strlen(in)] = '\0';
}
#endif /* HAVE_CTYPE_H */
/*! @} */
|
