blob: 0f7742f879b6cd83741405bc14ee07221bf6441d (
plain)
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
|
// Copyright 2005-2019 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#ifndef MUMBLE_MUMBLE_PLUGIN_UTILS_H_
#define MUMBLE_MUMBLE_PLUGIN_UTILS_H_
// escape lossily converts the given
// string to ASCII, replacing any
// character not within the printable
// ASCII region (32-126) with an ASCII
// space character.
//
// escape also replaces any double quote
// characters with an ASCII space. This
// allows the string to be safely used
// when constructing JSON documents via
// string concatenation.
//
// Finally, escape ensures that the given
// string is NUL-terminated by always
// setting the last byte of the input
// string to the value 0.
static void escape(char *str, size_t size) {
// Ensure the input string is properly NUL-terminated.
str[size-1] = 0;
char *c = str;
while (*c != '\0') {
// For JSON compatibility, the string
// can't contain double quotes.
// If a double quote is found, replace
// it with an ASCII space.
if (*c == '"') {
*c = ' ';
}
// Ensure the string is within printable
// ASCII. If not, replace the offending
// byte with an ASCII space.
if (*c < 32) {
*c = ' ';
} else if (*c > 126) {
*c = ' ';
}
c += 1;
}
}
#endif
|
