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
|
/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program 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; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "UriUtil.hxx"
#include <assert.h>
#include <string.h>
bool uri_has_scheme(const char *uri)
{
return strstr(uri, "://") != nullptr;
}
/* suffixes should be ascii only characters */
const char *
uri_get_suffix(const char *uri)
{
const char *suffix = strrchr(uri, '.');
if (suffix == nullptr)
return nullptr;
++suffix;
if (strpbrk(suffix, "/\\") != nullptr)
return nullptr;
return suffix;
}
static const char *
verify_uri_segment(const char *p)
{
const char *q;
unsigned dots = 0;
while (*p == '.') {
++p;
++dots;
}
if (dots <= 2 && (*p == 0 || *p == '/'))
return nullptr;
q = strchr(p + 1, '/');
return q != nullptr ? q : "";
}
bool
uri_safe_local(const char *uri)
{
while (true) {
uri = verify_uri_segment(uri);
if (uri == nullptr)
return false;
if (*uri == 0)
return true;
assert(*uri == '/');
++uri;
}
}
std::string
uri_remove_auth(const char *uri)
{
const char *auth, *slash, *at;
if (memcmp(uri, "http://", 7) == 0)
auth = uri + 7;
else if (memcmp(uri, "https://", 8) == 0)
auth = uri + 8;
else
/* unrecognized URI */
return std::string();
slash = strchr(auth, '/');
if (slash == nullptr)
slash = auth + strlen(auth);
at = (const char *)memchr(auth, '@', slash - auth);
if (at == nullptr)
/* no auth info present, do nothing */
return std::string();
/* duplicate the full URI and then delete the auth
information */
std::string result(uri);
result.erase(auth - uri, at + 1 - auth);
return result;
}
bool
uri_is_child(const char *parent, const char *child)
{
assert(parent != nullptr);
assert(child != nullptr);
const size_t parent_length = strlen(parent);
return memcmp(parent, child, parent_length) == 0 &&
child[parent_length] == '/';
}
bool
uri_is_child_or_same(const char *parent, const char *child)
{
return strcmp(parent, child) == 0 || uri_is_child(parent, child);
}
|
