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
|
/*
* Copyright 2003-2016 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 "config.h"
#include "lib/upnp/ContentDirectoryService.hxx"
#include "lib/upnp/ixmlwrap.hxx"
#include "lib/upnp/UniqueIxml.hxx"
#include "lib/upnp/Action.hxx"
#include "Directory.hxx"
#include "util/NumberParser.hxx"
#include "util/UriUtil.hxx"
#include "util/RuntimeError.hxx"
#include "util/ScopeExit.hxx"
#include <stdio.h>
static void
ReadResultTag(UPnPDirContent &dirbuf, IXML_Document *response)
{
const char *p = ixmlwrap::getFirstElementValue(response, "Result");
if (p == nullptr)
p = "";
dirbuf.Parse(p);
}
inline void
ContentDirectoryService::readDirSlice(UpnpClient_Handle hdl,
const char *objectId, unsigned offset,
unsigned count, UPnPDirContent &dirbuf,
unsigned &didreadp,
unsigned &totalp) const
{
// Create request
char ofbuf[100], cntbuf[100];
sprintf(ofbuf, "%u", offset);
sprintf(cntbuf, "%u", count);
// Some devices require an empty SortCriteria, else bad params
IXML_Document *request =
MakeActionHelper("Browse", m_serviceType.c_str(),
"ObjectID", objectId,
"BrowseFlag", "BrowseDirectChildren",
"Filter", "*",
"SortCriteria", "",
"StartingIndex", ofbuf,
"RequestedCount", cntbuf);
if (request == nullptr)
throw std::runtime_error("UpnpMakeAction() failed");
AtScopeExit(request) { ixmlDocument_free(request); };
IXML_Document *response;
int code = UpnpSendAction(hdl, m_actionURL.c_str(), m_serviceType.c_str(),
0 /*devUDN*/, request, &response);
if (code != UPNP_E_SUCCESS)
throw FormatRuntimeError("UpnpSendAction() failed: %s",
UpnpGetErrorMessage(code));
AtScopeExit(response) { ixmlDocument_free(response); };
const char *value = ixmlwrap::getFirstElementValue(response, "NumberReturned");
didreadp = value != nullptr
? ParseUnsigned(value)
: 0;
value = ixmlwrap::getFirstElementValue(response, "TotalMatches");
if (value != nullptr)
totalp = ParseUnsigned(value);
ReadResultTag(dirbuf, response);
}
UPnPDirContent
ContentDirectoryService::readDir(UpnpClient_Handle handle,
const char *objectId) const
{
UPnPDirContent dirbuf;
unsigned offset = 0, total = -1, count;
do {
readDirSlice(handle, objectId, offset, m_rdreqcnt, dirbuf,
count, total);
offset += count;
} while (count > 0 && offset < total);
return dirbuf;
}
UPnPDirContent
ContentDirectoryService::search(UpnpClient_Handle hdl,
const char *objectId,
const char *ss) const
{
UPnPDirContent dirbuf;
unsigned offset = 0, total = -1, count;
do {
char ofbuf[100];
sprintf(ofbuf, "%d", offset);
UniqueIxmlDocument request(MakeActionHelper("Search", m_serviceType.c_str(),
"ContainerID", objectId,
"SearchCriteria", ss,
"Filter", "*",
"SortCriteria", "",
"StartingIndex", ofbuf,
"RequestedCount", "0")); // Setting a value here gets twonky into fits
if (!request)
throw std::runtime_error("UpnpMakeAction() failed");
IXML_Document *_response;
auto code = UpnpSendAction(hdl, m_actionURL.c_str(),
m_serviceType.c_str(),
0 /*devUDN*/,
request.get(), &_response);
if (code != UPNP_E_SUCCESS)
throw FormatRuntimeError("UpnpSendAction() failed: %s",
UpnpGetErrorMessage(code));
UniqueIxmlDocument response(_response);
const char *value =
ixmlwrap::getFirstElementValue(response.get(),
"NumberReturned");
count = value != nullptr
? ParseUnsigned(value)
: 0;
offset += count;
value = ixmlwrap::getFirstElementValue(response.get(),
"TotalMatches");
if (value != nullptr)
total = ParseUnsigned(value);
ReadResultTag(dirbuf, response.get());
} while (count > 0 && offset < total);
return dirbuf;
}
UPnPDirContent
ContentDirectoryService::getMetadata(UpnpClient_Handle hdl,
const char *objectId) const
{
// Create request
UniqueIxmlDocument request(MakeActionHelper("Browse", m_serviceType.c_str(),
"ObjectID", objectId,
"BrowseFlag", "BrowseMetadata",
"Filter", "*",
"SortCriteria", "",
"StartingIndex", "0",
"RequestedCount", "1"));
if (request == nullptr)
throw std::runtime_error("UpnpMakeAction() failed");
IXML_Document *_response;
auto code = UpnpSendAction(hdl, m_actionURL.c_str(),
m_serviceType.c_str(),
0 /*devUDN*/, request.get(), &_response);
if (code != UPNP_E_SUCCESS)
throw FormatRuntimeError("UpnpSendAction() failed: %s",
UpnpGetErrorMessage(code));
UniqueIxmlDocument response(_response);
UPnPDirContent dirbuf;
ReadResultTag(dirbuf, response.get());
return dirbuf;
}
|
