cec : stop the processor thread and delete the CSerialPort instance on exit. zzzz
[deb_libcec.git] / src / lib / AdapterDetection.cpp
1 /*
2 * This file is part of the libCEC(R) library.
3 *
4 * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited. All rights reserved.
5 * libCEC(R) is an original work, containing original code.
6 *
7 * libCEC(R) is a trademark of Pulse-Eight Limited.
8 *
9 * This program is dual-licensed; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 *
23 *
24 * Alternatively, you can license this library under a commercial license,
25 * please contact Pulse-Eight Licensing for more information.
26 *
27 * For more information contact:
28 * Pulse-Eight Licensing <license@pulse-eight.com>
29 * http://www.pulse-eight.com/
30 * http://www.pulse-eight.net/
31 */
32
33 #include "AdapterDetection.h"
34 #include "platform/os-dependent.h"
35 #include "util/StdString.h"
36
37 #if !defined(__WINDOWS__)
38 #include <dirent.h>
39 #include <libudev.h>
40 #include <poll.h>
41 #else
42 #include <setupapi.h>
43
44 // the virtual COM port only shows up when requesting devices with the raw device guid!
45 static GUID USB_RAW_GUID = { 0xA5DCBF10, 0x6530, 0x11D2, { 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED } };
46 #endif
47
48 #define CEC_VID 0x2548
49 #define CEC_PID 0x1001
50
51 using namespace CEC;
52 using namespace std;
53
54 #if !defined(__WINDOWS__)
55 bool TranslateComPort(CStdString &strString)
56 {
57 CStdString strTmp(strString);
58 strTmp.MakeReverse();
59 int iSlash = strTmp.Find('/');
60 if (iSlash >= 0)
61 {
62 strTmp = strTmp.Left(iSlash);
63 strTmp.MakeReverse();
64 strString.Format("%s/%s:1.0/tty", strString.c_str(), strTmp.c_str());
65 return true;
66 }
67
68 return false;
69 }
70
71 bool FindComPort(CStdString &strLocation)
72 {
73 CStdString strPort = strLocation;
74 bool bReturn(!strPort.IsEmpty());
75 CStdString strConfigLocation(strLocation);
76 if (TranslateComPort(strConfigLocation))
77 {
78 DIR *dir;
79 struct dirent *dirent;
80 if((dir = opendir(strConfigLocation.c_str())) == NULL)
81 return bReturn;
82
83 while ((dirent = readdir(dir)) != NULL)
84 {
85 if(strcmp((char*)dirent->d_name, "." ) != 0 && strcmp((char*)dirent->d_name, ".." ) != 0)
86 {
87 strPort.Format("/dev/%s", dirent->d_name);
88 if (!strPort.IsEmpty())
89 {
90 strLocation = strPort;
91 bReturn = true;
92 break;
93 }
94 }
95 }
96 closedir(dir);
97 }
98
99 return bReturn;
100 }
101 #endif
102
103 int CAdapterDetection::FindAdapters(vector<cec_adapter> &deviceList, const char *strDevicePath /* = NULL */)
104 {
105 int iFound(0);
106
107 #if !defined(__WINDOWS__)
108 struct udev *udev;
109 if (!(udev = udev_new()))
110 return -1;
111
112 struct udev_enumerate *enumerate;
113 struct udev_list_entry *devices, *dev_list_entry;
114 struct udev_device *dev;
115 enumerate = udev_enumerate_new(udev);
116 udev_enumerate_scan_devices(enumerate);
117 devices = udev_enumerate_get_list_entry(enumerate);
118 udev_list_entry_foreach(dev_list_entry, devices)
119 {
120 const char *strPath;
121 strPath = udev_list_entry_get_name(dev_list_entry);
122
123 dev = udev_device_new_from_syspath(udev, strPath);
124 if (!dev)
125 continue;
126
127 dev = udev_device_get_parent(udev_device_get_parent(dev));
128 if (!dev)
129 continue;
130 if (!udev_device_get_sysattr_value(dev,"idVendor") || !udev_device_get_sysattr_value(dev, "idProduct"))
131 {
132 udev_device_unref(dev);
133 continue;
134 }
135
136 int iVendor, iProduct;
137 sscanf(udev_device_get_sysattr_value(dev, "idVendor"), "%x", &iVendor);
138 sscanf(udev_device_get_sysattr_value(dev, "idProduct"), "%x", &iProduct);
139 if (iVendor == CEC_VID && iProduct == CEC_PID)
140 {
141 CStdString strPath(udev_device_get_syspath(dev));
142 if (strDevicePath && strcmp(strPath.c_str(), strDevicePath))
143 continue;
144
145 CStdString strComm(strPath);
146 if (FindComPort(strComm))
147 {
148 cec_adapter foundDev;
149 foundDev.path = strPath;
150 foundDev.comm = strComm;
151 deviceList.push_back(foundDev);
152 ++iFound;
153 }
154 }
155 udev_device_unref(dev);
156 }
157
158 udev_enumerate_unref(enumerate);
159 udev_unref(udev);
160 #else
161 HDEVINFO hDevHandle;
162 DWORD required = 0, iMemberIndex = 0;
163 int nBufferSize = 0;
164
165 SP_DEVICE_INTERFACE_DATA deviceInterfaceData;
166 deviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
167
168 SP_DEVINFO_DATA devInfoData;
169 devInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
170
171 if ((hDevHandle = SetupDiGetClassDevs(&USB_RAW_GUID, 0, 0, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE)) == INVALID_HANDLE_VALUE)
172 return iFound;
173
174 BOOL bResult = true;
175 TCHAR *buffer = NULL;
176 PSP_DEVICE_INTERFACE_DETAIL_DATA devicedetailData;
177 while(bResult)
178 {
179 bResult = SetupDiEnumDeviceInfo(hDevHandle, iMemberIndex, &devInfoData);
180
181 if (bResult)
182 bResult = SetupDiEnumDeviceInterfaces(hDevHandle, 0, &USB_RAW_GUID, iMemberIndex, &deviceInterfaceData);
183
184 if(!bResult)
185 {
186 SetupDiDestroyDeviceInfoList(hDevHandle);
187 delete []buffer;
188 buffer = NULL;
189 return iFound;
190 }
191
192 iMemberIndex++;
193 BOOL bDetailResult = false;
194 {
195 // As per MSDN, Get the required buffer size. Call SetupDiGetDeviceInterfaceDetail with a
196 // NULL DeviceInterfaceDetailData pointer, a DeviceInterfaceDetailDataSize of zero,
197 // and a valid RequiredSize variable. In response to such a call, this function returns
198 // the required buffer size at RequiredSize and fails with GetLastError returning
199 // ERROR_INSUFFICIENT_BUFFER.
200 // Allocate an appropriately sized buffer and call the function again to get the interface details.
201
202 SetupDiGetDeviceInterfaceDetail(hDevHandle, &deviceInterfaceData, NULL, 0, &required, NULL);
203
204 buffer = new TCHAR[required];
205 devicedetailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA) buffer;
206 devicedetailData->cbSize = sizeof(SP_INTERFACE_DEVICE_DETAIL_DATA);
207 nBufferSize = required;
208 }
209
210 bDetailResult = SetupDiGetDeviceInterfaceDetail(hDevHandle, &deviceInterfaceData, devicedetailData, nBufferSize , &required, NULL);
211 if(!bDetailResult)
212 continue;
213
214 if (strDevicePath && strcmp(strDevicePath, devicedetailData->DevicePath) != 0)
215 continue;
216
217 CStdString strVendorId;
218 CStdString strProductId;
219 CStdString strTmp(devicedetailData->DevicePath);
220 strVendorId = strTmp.substr(strTmp.Find("vid_") + 4, 4);
221 strProductId = strTmp.substr(strTmp.Find("pid_") + 4, 4);
222 if (strTmp.Find("&mi_") >= 0 && strTmp.Find("&mi_00") < 0)
223 continue;
224
225 int iVendor, iProduct;
226 sscanf(strVendorId, "%x", &iVendor);
227 sscanf(strProductId, "%x", &iProduct);
228 if (iVendor != CEC_VID || iProduct != CEC_PID)
229 continue;
230
231 HKEY hDeviceKey = SetupDiOpenDevRegKey(hDevHandle, &devInfoData, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_QUERY_VALUE);
232 if (!hDeviceKey)
233 continue;
234
235 TCHAR strPortName[256];
236 strPortName[0] = _T('\0');
237 DWORD dwSize = sizeof(strPortName);
238 DWORD dwType = 0;
239
240 /* search the registry */
241 if ((RegQueryValueEx(hDeviceKey, _T("PortName"), NULL, &dwType, reinterpret_cast<LPBYTE>(strPortName), &dwSize) == ERROR_SUCCESS) && (dwType == REG_SZ))
242 {
243 if (_tcslen(strPortName) > 3 && _tcsnicmp(strPortName, _T("COM"), 3) == 0 &&
244 _ttoi(&(strPortName[3])) > 0)
245 {
246 cec_adapter foundDev;
247 foundDev.path = devicedetailData->DevicePath;
248 foundDev.comm = strPortName;
249 deviceList.push_back(foundDev);
250 ++iFound;
251 }
252 }
253
254 RegCloseKey(hDeviceKey);
255 }
256 #endif
257
258 return iFound;
259 }