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
|
/*
* Copyright (c) 2011 Remko Tronçon
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include <SwifTools/URIHandler/XMPPURI.h>
#include <boost/algorithm/string/predicate.hpp>
#include <boost/algorithm/string/find_format.hpp>
#include <boost/algorithm/string/formatter.hpp>
#include <boost/algorithm/string/find_iterator.hpp>
#include <boost/algorithm/string/split.hpp>
#include <boost/algorithm/string/classification.hpp>
#include <sstream>
#include <stdexcept>
#include <vector>
using namespace Swift;
namespace {
struct PercentEncodedCharacterFinder {
template<typename Iterator>
boost::iterator_range<Iterator> operator()(Iterator begin, Iterator end) {
boost::iterator_range<Iterator> r = boost::first_finder("%")(begin, end);
if (r.end() == end) {
return r;
}
else {
if (r.end() + 1 == end || r.end() + 2 == end) {
throw std::runtime_error("Incomplete escape character");
}
else {
r.advance_end(2);
return r;
}
}
}
};
struct PercentUnencodeFormatter {
template<typename FindResult>
std::string operator()(const FindResult& match) const {
std::stringstream s;
s << std::hex << std::string(match.begin() + 1, match.end());
unsigned int value;
s >> value;
if (s.fail() || s.bad()) {
throw std::runtime_error("Invalid escape character");
}
return std::string(reinterpret_cast<const char*>(&value), 1);
}
};
std::string unescape(const std::string& s) {
try {
return boost::find_format_all_copy(s, PercentEncodedCharacterFinder(), PercentUnencodeFormatter());
}
catch (const std::exception&) {
return "";
}
}
}
XMPPURI::XMPPURI() {
}
XMPPURI XMPPURI::fromString(const std::string& s) {
XMPPURI result;
if (boost::starts_with(s, "xmpp:")) {
std::string uri = s.substr(5, s.npos);
bool parsePath = true;
bool parseQuery = true;
bool parseFragment = true;
// Parse authority
if (boost::starts_with(uri, "//")) {
size_t i = uri.find_first_of("/#?", 2);
result.setAuthority(JID(unescape(uri.substr(2, i - 2))));
if (i == uri.npos) {
uri = "";
parsePath = parseQuery = parseFragment = false;
}
else {
if (uri[i] == '?') {
parsePath = false;
}
else if (uri[i] == '#') {
parseQuery = parsePath = false;
}
uri = uri.substr(i + 1, uri.npos);
}
}
// Parse path
if (parsePath) {
size_t i = uri.find_first_of("#?");
result.setPath(JID(unescape(uri.substr(0, i))));
if (i == uri.npos) {
uri = "";
parseQuery = parseFragment = false;
}
else {
if (uri[i] == '#') {
parseQuery = false;
}
uri = uri.substr(i + 1, uri.npos);
}
}
// Parse query
if (parseQuery) {
size_t end = uri.find_first_of("#");
std::string query = uri.substr(0, end);
bool haveType = false;
typedef boost::split_iterator<std::string::iterator> split_iterator;
for (split_iterator it = boost::make_split_iterator(query, boost::first_finder(";")); it != split_iterator(); ++it) {
if (haveType) {
std::vector<std::string> keyValue;
boost::split(keyValue, *it, boost::is_any_of("="));
if (keyValue.size() == 1) {
result.addQueryParameter(unescape(keyValue[0]), "");
}
else if (keyValue.size() >= 2) {
result.addQueryParameter(unescape(keyValue[0]), unescape(keyValue[1]));
}
}
else {
result.setQueryType(unescape(boost::copy_range<std::string>(*it)));
haveType = true;
}
}
uri = (end == uri.npos ? "" : uri.substr(end + 1, uri.npos));
}
// Parse fragment
if (parseFragment) {
result.setFragment(unescape(uri));
}
}
return result;
}
|
Swift