| 1 | /* |
| 2 | * This file is part of the libCEC(R) library. |
| 3 | * |
| 4 | * libCEC(R) is Copyright (C) 2011-2012 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 "USBCECAdapterDetection.h" |
| 34 | #include "../platform/util/StdString.h" |
| 35 | |
| 36 | #if defined(__APPLE__) |
| 37 | #include <dirent.h> |
| 38 | #include <sys/param.h> |
| 39 | #include <IOKit/IOKitLib.h> |
| 40 | #include <IOKit/IOMessage.h> |
| 41 | #include <IOKit/IOCFPlugIn.h> |
| 42 | #include <IOKit/usb/IOUSBLib.h> |
| 43 | #include <IOKit/serial/IOSerialKeys.h> |
| 44 | #include <CoreFoundation/CoreFoundation.h> |
| 45 | #elif defined(__WINDOWS__) |
| 46 | #pragma comment(lib, "advapi32.lib") |
| 47 | #pragma comment(lib, "setupapi.lib") |
| 48 | #include <setupapi.h> |
| 49 | |
| 50 | // the virtual COM port only shows up when requesting devices with the raw device guid! |
| 51 | static GUID USB_RAW_GUID = { 0xA5DCBF10, 0x6530, 0x11D2, { 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED } }; |
| 52 | #elif defined(HAVE_LIBUDEV) |
| 53 | #include <dirent.h> |
| 54 | #include <poll.h> |
| 55 | extern "C" { |
| 56 | #include <libudev.h> |
| 57 | } |
| 58 | #elif defined(__FreeBSD__) |
| 59 | #include <stdio.h> |
| 60 | #include <unistd.h> |
| 61 | #endif |
| 62 | |
| 63 | #define CEC_VID 0x2548 |
| 64 | #define CEC_PID 0x1001 |
| 65 | |
| 66 | using namespace CEC; |
| 67 | using namespace std; |
| 68 | |
| 69 | #if defined(HAVE_LIBUDEV) |
| 70 | bool TranslateComPort(CStdString &strString) |
| 71 | { |
| 72 | CStdString strTmp(strString); |
| 73 | strTmp.MakeReverse(); |
| 74 | int iSlash = strTmp.Find('/'); |
| 75 | if (iSlash >= 0) |
| 76 | { |
| 77 | strTmp = strTmp.Left(iSlash); |
| 78 | strTmp.MakeReverse(); |
| 79 | strString.Format("%s/%s:1.0/tty", strString.c_str(), strTmp.c_str()); |
| 80 | return true; |
| 81 | } |
| 82 | |
| 83 | return false; |
| 84 | } |
| 85 | |
| 86 | bool FindComPort(CStdString &strLocation) |
| 87 | { |
| 88 | CStdString strPort = strLocation; |
| 89 | bool bReturn(!strPort.IsEmpty()); |
| 90 | CStdString strConfigLocation(strLocation); |
| 91 | if (TranslateComPort(strConfigLocation)) |
| 92 | { |
| 93 | DIR *dir; |
| 94 | struct dirent *dirent; |
| 95 | if((dir = opendir(strConfigLocation.c_str())) == NULL) |
| 96 | return bReturn; |
| 97 | |
| 98 | while ((dirent = readdir(dir)) != NULL) |
| 99 | { |
| 100 | if(strcmp((char*)dirent->d_name, "." ) != 0 && strcmp((char*)dirent->d_name, ".." ) != 0) |
| 101 | { |
| 102 | strPort.Format("/dev/%s", dirent->d_name); |
| 103 | if (!strPort.IsEmpty()) |
| 104 | { |
| 105 | strLocation = strPort; |
| 106 | bReturn = true; |
| 107 | break; |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | closedir(dir); |
| 112 | } |
| 113 | |
| 114 | return bReturn; |
| 115 | } |
| 116 | #endif |
| 117 | |
| 118 | uint8_t CUSBCECAdapterDetection::FindAdapters(cec_adapter *deviceList, uint8_t iBufSize, const char *strDevicePath /* = NULL */) |
| 119 | { |
| 120 | uint8_t iFound(0); |
| 121 | |
| 122 | #if defined(__APPLE__) |
| 123 | kern_return_t kresult; |
| 124 | char bsdPath[MAXPATHLEN] = {0}; |
| 125 | io_iterator_t serialPortIterator; |
| 126 | |
| 127 | CFMutableDictionaryRef classesToMatch = IOServiceMatching(kIOSerialBSDServiceValue); |
| 128 | if (classesToMatch) |
| 129 | { |
| 130 | CFDictionarySetValue(classesToMatch, CFSTR(kIOSerialBSDTypeKey), CFSTR(kIOSerialBSDModemType)); |
| 131 | kresult = IOServiceGetMatchingServices(kIOMasterPortDefault, classesToMatch, &serialPortIterator); |
| 132 | if (kresult == KERN_SUCCESS) |
| 133 | { |
| 134 | io_object_t serialService; |
| 135 | while ((serialService = IOIteratorNext(serialPortIterator))) |
| 136 | { |
| 137 | int iVendor = 0, iProduct = 0; |
| 138 | CFTypeRef bsdPathAsCFString; |
| 139 | |
| 140 | // fetch the device path. |
| 141 | bsdPathAsCFString = IORegistryEntryCreateCFProperty(serialService, |
| 142 | CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0); |
| 143 | if (bsdPathAsCFString) |
| 144 | { |
| 145 | // convert the path from a CFString to a C (NUL-terminated) string. |
| 146 | CFStringGetCString((CFStringRef)bsdPathAsCFString, bsdPath, MAXPATHLEN - 1, kCFStringEncodingUTF8); |
| 147 | CFRelease(bsdPathAsCFString); |
| 148 | |
| 149 | // now walk up the hierarchy until we find the entry with vendor/product IDs |
| 150 | io_registry_entry_t parent; |
| 151 | CFTypeRef vendorIdAsCFNumber = NULL; |
| 152 | CFTypeRef productIdAsCFNumber = NULL; |
| 153 | kern_return_t kresult = IORegistryEntryGetParentEntry(serialService, kIOServicePlane, &parent); |
| 154 | while (kresult == KERN_SUCCESS) |
| 155 | { |
| 156 | vendorIdAsCFNumber = IORegistryEntrySearchCFProperty(parent, |
| 157 | kIOServicePlane, CFSTR(kUSBVendorID), kCFAllocatorDefault, 0); |
| 158 | productIdAsCFNumber = IORegistryEntrySearchCFProperty(parent, |
| 159 | kIOServicePlane, CFSTR(kUSBProductID), kCFAllocatorDefault, 0); |
| 160 | if (vendorIdAsCFNumber && productIdAsCFNumber) |
| 161 | { |
| 162 | CFNumberGetValue((CFNumberRef)vendorIdAsCFNumber, kCFNumberIntType, &iVendor); |
| 163 | CFRelease(vendorIdAsCFNumber); |
| 164 | CFNumberGetValue((CFNumberRef)productIdAsCFNumber, kCFNumberIntType, &iProduct); |
| 165 | CFRelease(productIdAsCFNumber); |
| 166 | IOObjectRelease(parent); |
| 167 | break; |
| 168 | } |
| 169 | io_registry_entry_t oldparent = parent; |
| 170 | kresult = IORegistryEntryGetParentEntry(parent, kIOServicePlane, &parent); |
| 171 | IOObjectRelease(oldparent); |
| 172 | } |
| 173 | if (strlen(bsdPath) && iVendor == CEC_VID && iProduct == CEC_PID) |
| 174 | { |
| 175 | if (!strDevicePath || !strcmp(bsdPath, strDevicePath)) |
| 176 | { |
| 177 | // on darwin, the device path is the same as the comm path. |
| 178 | snprintf(deviceList[iFound ].path, sizeof(deviceList[iFound].path), "%s", bsdPath); |
| 179 | snprintf(deviceList[iFound++].comm, sizeof(deviceList[iFound].path), "%s", bsdPath); |
| 180 | } |
| 181 | } |
| 182 | } |
| 183 | IOObjectRelease(serialService); |
| 184 | } |
| 185 | } |
| 186 | IOObjectRelease(serialPortIterator); |
| 187 | } |
| 188 | #elif defined(HAVE_LIBUDEV) |
| 189 | struct udev *udev; |
| 190 | if (!(udev = udev_new())) |
| 191 | return -1; |
| 192 | |
| 193 | struct udev_enumerate *enumerate; |
| 194 | struct udev_list_entry *devices, *dev_list_entry; |
| 195 | struct udev_device *dev, *pdev; |
| 196 | enumerate = udev_enumerate_new(udev); |
| 197 | udev_enumerate_scan_devices(enumerate); |
| 198 | devices = udev_enumerate_get_list_entry(enumerate); |
| 199 | udev_list_entry_foreach(dev_list_entry, devices) |
| 200 | { |
| 201 | const char *strPath; |
| 202 | strPath = udev_list_entry_get_name(dev_list_entry); |
| 203 | |
| 204 | dev = udev_device_new_from_syspath(udev, strPath); |
| 205 | if (!dev) |
| 206 | continue; |
| 207 | |
| 208 | pdev = udev_device_get_parent(udev_device_get_parent(dev)); |
| 209 | if (!pdev || !udev_device_get_sysattr_value(pdev,"idVendor") || !udev_device_get_sysattr_value(pdev, "idProduct")) |
| 210 | { |
| 211 | udev_device_unref(dev); |
| 212 | continue; |
| 213 | } |
| 214 | |
| 215 | int iVendor, iProduct; |
| 216 | sscanf(udev_device_get_sysattr_value(pdev, "idVendor"), "%x", &iVendor); |
| 217 | sscanf(udev_device_get_sysattr_value(pdev, "idProduct"), "%x", &iProduct); |
| 218 | if (iVendor == CEC_VID && iProduct == CEC_PID) |
| 219 | { |
| 220 | CStdString strPath(udev_device_get_syspath(pdev)); |
| 221 | if (!strDevicePath || !strcmp(strPath.c_str(), strDevicePath)) |
| 222 | { |
| 223 | CStdString strComm(strPath); |
| 224 | if (FindComPort(strComm)) |
| 225 | { |
| 226 | snprintf(deviceList[iFound ].path, sizeof(deviceList[iFound].path), "%s", strPath.c_str()); |
| 227 | snprintf(deviceList[iFound++].comm, sizeof(deviceList[iFound].path), "%s", strComm.c_str()); |
| 228 | } |
| 229 | } |
| 230 | } |
| 231 | udev_device_unref(dev); |
| 232 | } |
| 233 | |
| 234 | udev_enumerate_unref(enumerate); |
| 235 | udev_unref(udev); |
| 236 | #elif defined(__WINDOWS__) |
| 237 | HDEVINFO hDevHandle; |
| 238 | DWORD required = 0, iMemberIndex = 0; |
| 239 | int nBufferSize = 0; |
| 240 | |
| 241 | SP_DEVICE_INTERFACE_DATA deviceInterfaceData; |
| 242 | deviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); |
| 243 | |
| 244 | SP_DEVINFO_DATA devInfoData; |
| 245 | devInfoData.cbSize = sizeof(SP_DEVINFO_DATA); |
| 246 | |
| 247 | if ((hDevHandle = SetupDiGetClassDevs(&USB_RAW_GUID, 0, 0, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE)) == INVALID_HANDLE_VALUE) |
| 248 | return iFound; |
| 249 | |
| 250 | BOOL bResult = true; |
| 251 | TCHAR *buffer = NULL; |
| 252 | PSP_DEVICE_INTERFACE_DETAIL_DATA devicedetailData; |
| 253 | while(bResult && iFound < iBufSize) |
| 254 | { |
| 255 | bResult = SetupDiEnumDeviceInfo(hDevHandle, iMemberIndex, &devInfoData); |
| 256 | |
| 257 | if (bResult) |
| 258 | bResult = SetupDiEnumDeviceInterfaces(hDevHandle, 0, &USB_RAW_GUID, iMemberIndex, &deviceInterfaceData); |
| 259 | |
| 260 | if(!bResult) |
| 261 | { |
| 262 | SetupDiDestroyDeviceInfoList(hDevHandle); |
| 263 | delete []buffer; |
| 264 | buffer = NULL; |
| 265 | return iFound; |
| 266 | } |
| 267 | |
| 268 | iMemberIndex++; |
| 269 | BOOL bDetailResult = false; |
| 270 | { |
| 271 | // As per MSDN, Get the required buffer size. Call SetupDiGetDeviceInterfaceDetail with a |
| 272 | // NULL DeviceInterfaceDetailData pointer, a DeviceInterfaceDetailDataSize of zero, |
| 273 | // and a valid RequiredSize variable. In response to such a call, this function returns |
| 274 | // the required buffer size at RequiredSize and fails with GetLastError returning |
| 275 | // ERROR_INSUFFICIENT_BUFFER. |
| 276 | // Allocate an appropriately sized buffer and call the function again to get the interface details. |
| 277 | |
| 278 | SetupDiGetDeviceInterfaceDetail(hDevHandle, &deviceInterfaceData, NULL, 0, &required, NULL); |
| 279 | |
| 280 | buffer = new TCHAR[required]; |
| 281 | devicedetailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA) buffer; |
| 282 | devicedetailData->cbSize = sizeof(SP_INTERFACE_DEVICE_DETAIL_DATA); |
| 283 | nBufferSize = required; |
| 284 | } |
| 285 | |
| 286 | bDetailResult = SetupDiGetDeviceInterfaceDetail(hDevHandle, &deviceInterfaceData, devicedetailData, nBufferSize , &required, NULL); |
| 287 | if(!bDetailResult) |
| 288 | continue; |
| 289 | |
| 290 | if (strDevicePath && strcmp(strDevicePath, devicedetailData->DevicePath) != 0) |
| 291 | continue; |
| 292 | |
| 293 | CStdString strVendorId; |
| 294 | CStdString strProductId; |
| 295 | CStdString strTmp(devicedetailData->DevicePath); |
| 296 | strVendorId.assign(strTmp.substr(strTmp.Find("vid_") + 4, 4)); |
| 297 | strProductId.assign(strTmp.substr(strTmp.Find("pid_") + 4, 4)); |
| 298 | if (strTmp.Find("&mi_") >= 0 && strTmp.Find("&mi_00") < 0) |
| 299 | continue; |
| 300 | |
| 301 | int iVendor, iProduct; |
| 302 | sscanf(strVendorId, "%x", &iVendor); |
| 303 | sscanf(strProductId, "%x", &iProduct); |
| 304 | if (iVendor != CEC_VID || iProduct != CEC_PID) |
| 305 | continue; |
| 306 | |
| 307 | HKEY hDeviceKey = SetupDiOpenDevRegKey(hDevHandle, &devInfoData, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_QUERY_VALUE); |
| 308 | if (!hDeviceKey) |
| 309 | continue; |
| 310 | |
| 311 | TCHAR strPortName[256]; |
| 312 | strPortName[0] = _T('\0'); |
| 313 | DWORD dwSize = sizeof(strPortName); |
| 314 | DWORD dwType = 0; |
| 315 | |
| 316 | /* search the registry */ |
| 317 | if ((RegQueryValueEx(hDeviceKey, _T("PortName"), NULL, &dwType, reinterpret_cast<LPBYTE>(strPortName), &dwSize) == ERROR_SUCCESS) && (dwType == REG_SZ)) |
| 318 | { |
| 319 | if (_tcslen(strPortName) > 3 && _tcsnicmp(strPortName, _T("COM"), 3) == 0 && |
| 320 | _ttoi(&(strPortName[3])) > 0) |
| 321 | { |
| 322 | snprintf(deviceList[iFound ].path, sizeof(deviceList[iFound].path), "%s", devicedetailData->DevicePath); |
| 323 | snprintf(deviceList[iFound++].comm, sizeof(deviceList[iFound].path), "%s", strPortName); |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | RegCloseKey(hDeviceKey); |
| 328 | } |
| 329 | #elif defined(__FreeBSD__) |
| 330 | char devicePath[PATH_MAX + 1]; |
| 331 | int i; |
| 332 | |
| 333 | for (i = 0; i < 8; ++i) |
| 334 | { |
| 335 | (void)snprintf(devicePath, sizeof(devicePath), "/dev/ttyU%d", i); |
| 336 | if (!access(devicePath, 0)) |
| 337 | { |
| 338 | snprintf(deviceList[iFound ].path, sizeof(deviceList[iFound].path), "%s", devicePath); |
| 339 | snprintf(deviceList[iFound++].comm, sizeof(deviceList[iFound].path), "%s", devicePath); |
| 340 | } |
| 341 | } |
| 342 | #endif |
| 343 | |
| 344 | iBufSize = 0; /* silence "unused" warning on linux/osx */ |
| 345 | |
| 346 | return iFound; |
| 347 | } |