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
|
/** **************************************************************************
* util.c
*
* Copyright 2008 Bryan Ischo <bryan@ischo.com>
*
* This file is part of libs3.
*
* libs3 is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, version 3 of the License.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of this library and its programs with the
* OpenSSL library, and distribute linked combinations including the two.
*
* libs3 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 General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License version 3
* along with libs3, in a file named COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
************************************************************************** **/
#include <ctype.h>
#include <string.h>
#include "util.h"
static const char *urlSafeG = "-_.!~*'()/";
static const char *hexG = "0123456789ABCDEF";
// Convenience utility for making the code look nicer. Tests a string
// against a format; only the characters specified in the format are
// checked (i.e. if the string is longer than the format, the string still
// checks out ok). Format characters are:
// d - is a digit
// anything else - is that character
// Returns nonzero the string checks out, zero if it does not.
static int checkString(const char *str, const char *format)
{
while (*format) {
if (*format == 'd') {
if (!isdigit(*str)) {
return 0;
}
}
else if (*str != *format) {
return 0;
}
str++, format++;
}
return 1;
}
int urlEncode(char *dest, const char *src, int maxSrcSize)
{
int len = 0;
if (src) while (*src) {
if (++len > maxSrcSize) {
return 0;
}
const char *urlsafe = urlSafeG;
int isurlsafe = 0;
while (*urlsafe) {
if (*urlsafe == *src) {
isurlsafe = 1;
break;
}
urlsafe++;
}
if (isurlsafe || isalnum(*src)) {
*dest++ = *src++;
}
else if (*src == ' ') {
*dest++ = '+';
src++;
}
else {
*dest++ = '%';
*dest++ = hexG[*src / 16];
*dest++ = hexG[*src % 16];
src++;
}
}
*dest = 0;
return 1;
}
time_t parseIso8601Time(const char *str)
{
// Check to make sure that it has a valid format
if (!checkString(str, "dddd-dd-ddTdd:dd:dd")) {
return -1;
}
#define nextnum() (((*str - '0') * 10) + (*(str + 1) - '0'))
// Convert it
struct tm stm;
memset(&stm, 0, sizeof(stm));
stm.tm_year = (nextnum() - 19) * 100;
str += 2;
stm.tm_year += nextnum();
str += 3;
stm.tm_mon = nextnum() - 1;
str += 3;
stm.tm_mday = nextnum();
str += 3;
stm.tm_hour = nextnum();
str += 3;
stm.tm_min = nextnum();
str += 3;
stm.tm_sec = nextnum();
str += 2;
stm.tm_isdst = -1;
time_t ret = mktime(&stm);
// Skip the millis
if (*str == '.') {
str++;
while (isdigit(*str)) {
str++;
}
}
if (checkString(str, "-dd:dd") || checkString(str, "+dd:dd")) {
int sign = (*str++ == '-') ? -1 : 1;
int hours = nextnum();
str += 3;
int minutes = nextnum();
ret += (-sign * (((hours * 60) + minutes) * 60));
}
// Else it should be Z to be a conformant time string, but we just assume
// that it is rather than enforcing that
return ret;
}
uint64_t parseUnsignedInt(const char *str)
{
// Skip whitespace
while (isblank(*str)) {
str++;
}
uint64_t ret = 0;
while (isdigit(*str)) {
ret *= 10;
ret += (*str++ - '0');
}
return ret;
}
int base64Encode(const unsigned char *in, int inLen, unsigned char *out)
{
static const char *ENC =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
unsigned char *original_out = out;
while (inLen) {
// first 6 bits of char 1
*out++ = ENC[*in >> 2];
if (!--inLen) {
// last 2 bits of char 1, 4 bits of 0
*out++ = ENC[(*in & 0x3) << 4];
*out++ = '=';
*out++ = '=';
break;
}
// last 2 bits of char 1, first 4 bits of char 2
*out++ = ENC[((*in & 0x3) << 4) | (*(in + 1) >> 4)];
in++;
if (!--inLen) {
// last 4 bits of char 2, 2 bits of 0
*out++ = ENC[(*in & 0xF) << 2];
*out++ = '=';
break;
}
// last 4 bits of char 2, first 2 bits of char 3
*out++ = ENC[((*in & 0xF) << 2) | (*(in + 1) >> 6)];
in++;
// last 6 bits of char 3
*out++ = ENC[*in & 0x3F];
in++, inLen--;
}
return (out - original_out);
}
|
