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Commit | Line | Data |
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e33dcf90 ML |
1 | /* |
2 | * This file is part of the libserialport project. | |
3 | * | |
48a4076f | 4 | * Copyright (C) 2013-2014 Martin Ling <martin-libserialport@earth.li> |
e33dcf90 ML |
5 | * Copyright (C) 2014 Aurelien Jacobs <aurel@gnuage.org> |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as | |
9 | * published by the Free Software Foundation, either version 3 of the | |
10 | * License, or (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include "libserialport.h" | |
22 | #include "libserialport_internal.h" | |
23 | ||
dc422c04 UH |
24 | /* USB path is a string of at most 8 decimal numbers < 128 separated by dots. */ |
25 | #define MAX_USB_PATH ((8 * 3) + (7 * 1) + 1) | |
e33dcf90 | 26 | |
eb50b1ac UH |
27 | static void enumerate_hub(struct sp_port *port, const char *hub_name, |
28 | const char *parent_path); | |
e33dcf90 ML |
29 | |
30 | static char *wc_to_utf8(PWCHAR wc_buffer, ULONG size) | |
31 | { | |
dc422c04 | 32 | WCHAR wc_str[(size / sizeof(WCHAR)) + 1]; |
e33dcf90 ML |
33 | char *utf8_str; |
34 | ||
dc422c04 | 35 | /* Zero-terminate the wide char string. */ |
e33dcf90 | 36 | memcpy(wc_str, wc_buffer, size); |
dc422c04 | 37 | wc_str[sizeof(wc_str) - 1] = 0; |
e33dcf90 | 38 | |
dc422c04 | 39 | /* Compute the size of the UTF-8 converted string. */ |
e33dcf90 ML |
40 | if (!(size = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, wc_str, -1, |
41 | NULL, 0, NULL, NULL))) | |
42 | return NULL; | |
43 | ||
dc422c04 | 44 | /* Allocate UTF-8 output buffer. */ |
e33dcf90 ML |
45 | if (!(utf8_str = malloc(size))) |
46 | return NULL; | |
47 | ||
dc422c04 | 48 | /* Actually converted to UTF-8. */ |
e33dcf90 ML |
49 | if (!WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, wc_str, -1, |
50 | utf8_str, size, NULL, NULL)) { | |
51 | free(utf8_str); | |
52 | return NULL; | |
53 | } | |
54 | ||
55 | return utf8_str; | |
56 | } | |
57 | ||
58 | static char *get_root_hub_name(HANDLE host_controller) | |
59 | { | |
dc422c04 | 60 | USB_ROOT_HUB_NAME root_hub_name; |
e33dcf90 ML |
61 | PUSB_ROOT_HUB_NAME root_hub_name_wc; |
62 | char *root_hub_name_utf8; | |
63 | ULONG size = 0; | |
64 | ||
dc422c04 | 65 | /* Compute the size of the root hub name string. */ |
e33dcf90 ML |
66 | if (!DeviceIoControl(host_controller, IOCTL_USB_GET_ROOT_HUB_NAME, 0, 0, |
67 | &root_hub_name, sizeof(root_hub_name), &size, NULL)) | |
68 | return NULL; | |
69 | ||
dc422c04 | 70 | /* Allocate wide char root hub name string. */ |
e33dcf90 ML |
71 | size = root_hub_name.ActualLength; |
72 | if (!(root_hub_name_wc = malloc(size))) | |
73 | return NULL; | |
74 | ||
dc422c04 | 75 | /* Actually get the root hub name string. */ |
e33dcf90 ML |
76 | if (!DeviceIoControl(host_controller, IOCTL_USB_GET_ROOT_HUB_NAME, |
77 | NULL, 0, root_hub_name_wc, size, &size, NULL)) { | |
78 | free(root_hub_name_wc); | |
79 | return NULL; | |
80 | } | |
81 | ||
dc422c04 | 82 | /* Convert the root hub name string to UTF-8. */ |
e33dcf90 ML |
83 | root_hub_name_utf8 = wc_to_utf8(root_hub_name_wc->RootHubName, size); |
84 | free(root_hub_name_wc); | |
85 | return root_hub_name_utf8; | |
86 | } | |
87 | ||
88 | static char *get_external_hub_name(HANDLE hub, ULONG connection_index) | |
89 | { | |
dc422c04 | 90 | USB_NODE_CONNECTION_NAME ext_hub_name; |
e33dcf90 ML |
91 | PUSB_NODE_CONNECTION_NAME ext_hub_name_wc; |
92 | char *ext_hub_name_utf8; | |
93 | ULONG size; | |
94 | ||
dc422c04 | 95 | /* Compute the size of the external hub name string. */ |
e33dcf90 ML |
96 | ext_hub_name.ConnectionIndex = connection_index; |
97 | if (!DeviceIoControl(hub, IOCTL_USB_GET_NODE_CONNECTION_NAME, | |
98 | &ext_hub_name, sizeof(ext_hub_name), | |
99 | &ext_hub_name, sizeof(ext_hub_name), &size, NULL)) | |
100 | return NULL; | |
101 | ||
dc422c04 | 102 | /* Allocate wide char external hub name string. */ |
e33dcf90 ML |
103 | size = ext_hub_name.ActualLength; |
104 | if (size <= sizeof(ext_hub_name) | |
105 | || !(ext_hub_name_wc = malloc(size))) | |
106 | return NULL; | |
107 | ||
dc422c04 | 108 | /* Get the name of the external hub attached to the specified port. */ |
e33dcf90 ML |
109 | ext_hub_name_wc->ConnectionIndex = connection_index; |
110 | if (!DeviceIoControl(hub, IOCTL_USB_GET_NODE_CONNECTION_NAME, | |
111 | ext_hub_name_wc, size, | |
112 | ext_hub_name_wc, size, &size, NULL)) { | |
113 | free(ext_hub_name_wc); | |
114 | return NULL; | |
115 | } | |
116 | ||
dc422c04 | 117 | /* Convert the external hub name string to UTF-8. */ |
e33dcf90 ML |
118 | ext_hub_name_utf8 = wc_to_utf8(ext_hub_name_wc->NodeName, size); |
119 | free(ext_hub_name_wc); | |
120 | return ext_hub_name_utf8; | |
121 | } | |
122 | ||
123 | static char *get_string_descriptor(HANDLE hub_device, ULONG connection_index, | |
124 | UCHAR descriptor_index) | |
125 | { | |
126 | char desc_req_buf[sizeof(USB_DESCRIPTOR_REQUEST) + | |
127 | MAXIMUM_USB_STRING_LENGTH] = { 0 }; | |
dc422c04 UH |
128 | PUSB_DESCRIPTOR_REQUEST desc_req = (void *)desc_req_buf; |
129 | PUSB_STRING_DESCRIPTOR desc = (void *)(desc_req + 1); | |
e33dcf90 ML |
130 | ULONG size = sizeof(desc_req_buf); |
131 | ||
dc422c04 UH |
132 | desc_req->ConnectionIndex = connection_index; |
133 | desc_req->SetupPacket.wValue = (USB_STRING_DESCRIPTOR_TYPE << 8) | |
134 | | descriptor_index; | |
135 | desc_req->SetupPacket.wIndex = 0; | |
e33dcf90 ML |
136 | desc_req->SetupPacket.wLength = size - sizeof(*desc_req); |
137 | ||
138 | if (!DeviceIoControl(hub_device, | |
139 | IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, | |
140 | desc_req, size, desc_req, size, &size, NULL) | |
141 | || size < 2 | |
142 | || desc->bDescriptorType != USB_STRING_DESCRIPTOR_TYPE | |
143 | || desc->bLength != size - sizeof(*desc_req) | |
144 | || desc->bLength % 2) | |
145 | return NULL; | |
146 | ||
147 | return wc_to_utf8(desc->bString, desc->bLength); | |
148 | } | |
149 | ||
150 | static void enumerate_hub_ports(struct sp_port *port, HANDLE hub_device, | |
eb50b1ac | 151 | ULONG nb_ports, const char *parent_path) |
e33dcf90 ML |
152 | { |
153 | char path[MAX_USB_PATH]; | |
154 | ULONG index = 0; | |
155 | ||
156 | for (index = 1; index <= nb_ports; index++) { | |
157 | PUSB_NODE_CONNECTION_INFORMATION_EX connection_info_ex; | |
dc422c04 | 158 | ULONG size = sizeof(*connection_info_ex) + (30 * sizeof(USB_PIPE_INFO)); |
e33dcf90 ML |
159 | |
160 | if (!(connection_info_ex = malloc(size))) | |
161 | break; | |
162 | ||
163 | connection_info_ex->ConnectionIndex = index; | |
164 | if (!DeviceIoControl(hub_device, | |
165 | IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX, | |
166 | connection_info_ex, size, | |
167 | connection_info_ex, size, &size, NULL)) { | |
dc422c04 UH |
168 | /* |
169 | * Try to get CONNECTION_INFORMATION if | |
170 | * CONNECTION_INFORMATION_EX did not work. | |
171 | */ | |
e33dcf90 ML |
172 | PUSB_NODE_CONNECTION_INFORMATION connection_info; |
173 | ||
dc422c04 | 174 | size = sizeof(*connection_info) + (30 * sizeof(USB_PIPE_INFO)); |
e33dcf90 ML |
175 | if (!(connection_info = malloc(size))) { |
176 | free(connection_info_ex); | |
177 | continue; | |
178 | } | |
179 | connection_info->ConnectionIndex = index; | |
180 | if (!DeviceIoControl(hub_device, | |
181 | IOCTL_USB_GET_NODE_CONNECTION_INFORMATION, | |
182 | connection_info, size, | |
183 | connection_info, size, &size, NULL)) { | |
184 | free(connection_info); | |
185 | free(connection_info_ex); | |
186 | continue; | |
187 | } | |
188 | ||
189 | connection_info_ex->ConnectionIndex = connection_info->ConnectionIndex; | |
190 | connection_info_ex->DeviceDescriptor = connection_info->DeviceDescriptor; | |
191 | connection_info_ex->DeviceIsHub = connection_info->DeviceIsHub; | |
192 | connection_info_ex->DeviceAddress = connection_info->DeviceAddress; | |
193 | free(connection_info); | |
194 | } | |
195 | ||
196 | if (connection_info_ex->DeviceIsHub) { | |
dc422c04 | 197 | /* Recursively enumerate external hub. */ |
e33dcf90 ML |
198 | PCHAR ext_hub_name; |
199 | if ((ext_hub_name = get_external_hub_name(hub_device, index))) { | |
200 | snprintf(path, sizeof(path), "%s%ld.", | |
201 | parent_path, connection_info_ex->ConnectionIndex); | |
202 | enumerate_hub(port, ext_hub_name, path); | |
203 | } | |
204 | free(connection_info_ex); | |
205 | } else { | |
206 | snprintf(path, sizeof(path), "%s%ld", | |
207 | parent_path, connection_info_ex->ConnectionIndex); | |
208 | ||
dc422c04 | 209 | /* Check if this device is the one we search for. */ |
e33dcf90 ML |
210 | if (strcmp(path, port->usb_path)) { |
211 | free(connection_info_ex); | |
212 | continue; | |
213 | } | |
214 | ||
dc422c04 | 215 | /* Finally grab detailed information regarding the device. */ |
e33dcf90 ML |
216 | port->usb_address = connection_info_ex->DeviceAddress + 1; |
217 | port->usb_vid = connection_info_ex->DeviceDescriptor.idVendor; | |
218 | port->usb_pid = connection_info_ex->DeviceDescriptor.idProduct; | |
219 | ||
220 | if (connection_info_ex->DeviceDescriptor.iManufacturer) | |
221 | port->usb_manufacturer = get_string_descriptor(hub_device,index, | |
222 | connection_info_ex->DeviceDescriptor.iManufacturer); | |
223 | if (connection_info_ex->DeviceDescriptor.iProduct) | |
224 | port->usb_product = get_string_descriptor(hub_device, index, | |
225 | connection_info_ex->DeviceDescriptor.iProduct); | |
226 | if (connection_info_ex->DeviceDescriptor.iSerialNumber) | |
227 | port->usb_serial = get_string_descriptor(hub_device, index, | |
228 | connection_info_ex->DeviceDescriptor.iSerialNumber); | |
229 | ||
230 | free(connection_info_ex); | |
231 | break; | |
232 | } | |
233 | } | |
234 | } | |
235 | ||
eb50b1ac UH |
236 | static void enumerate_hub(struct sp_port *port, const char *hub_name, |
237 | const char *parent_path) | |
e33dcf90 ML |
238 | { |
239 | USB_NODE_INFORMATION hub_info; | |
240 | HANDLE hub_device; | |
241 | ULONG size = sizeof(hub_info); | |
242 | char *device_name; | |
243 | ||
dc422c04 | 244 | /* Open the hub with its full name. */ |
e33dcf90 ML |
245 | if (!(device_name = malloc(strlen("\\\\.\\") + strlen(hub_name) + 1))) |
246 | return; | |
247 | strcpy(device_name, "\\\\.\\"); | |
248 | strcat(device_name, hub_name); | |
249 | hub_device = CreateFile(device_name, GENERIC_WRITE, FILE_SHARE_WRITE, | |
250 | NULL, OPEN_EXISTING, 0, NULL); | |
251 | free(device_name); | |
252 | if (hub_device == INVALID_HANDLE_VALUE) | |
253 | return; | |
254 | ||
dc422c04 | 255 | /* Get the number of ports of the hub. */ |
e33dcf90 ML |
256 | if (DeviceIoControl(hub_device, IOCTL_USB_GET_NODE_INFORMATION, |
257 | &hub_info, size, &hub_info, size, &size, NULL)) | |
dc422c04 | 258 | /* Enumerate the ports of the hub. */ |
e33dcf90 ML |
259 | enumerate_hub_ports(port, hub_device, |
260 | hub_info.u.HubInformation.HubDescriptor.bNumberOfPorts, parent_path); | |
261 | ||
262 | CloseHandle(hub_device); | |
263 | } | |
264 | ||
265 | static void enumerate_host_controller(struct sp_port *port, | |
266 | HANDLE host_controller_device) | |
267 | { | |
268 | char *root_hub_name; | |
269 | ||
270 | if ((root_hub_name = get_root_hub_name(host_controller_device))) { | |
271 | enumerate_hub(port, root_hub_name, ""); | |
272 | free(root_hub_name); | |
273 | } | |
274 | } | |
275 | ||
276 | static void get_usb_details(struct sp_port *port, DEVINST dev_inst_match) | |
277 | { | |
278 | HDEVINFO device_info; | |
279 | SP_DEVINFO_DATA device_info_data; | |
280 | ULONG i, size = 0; | |
281 | ||
dc422c04 | 282 | device_info = SetupDiGetClassDevs(&GUID_CLASS_USB_HOST_CONTROLLER, NULL, NULL, |
e33dcf90 ML |
283 | DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); |
284 | device_info_data.cbSize = sizeof(device_info_data); | |
285 | ||
dc422c04 | 286 | for (i = 0; SetupDiEnumDeviceInfo(device_info, i, &device_info_data); i++) { |
e33dcf90 ML |
287 | SP_DEVICE_INTERFACE_DATA device_interface_data; |
288 | PSP_DEVICE_INTERFACE_DETAIL_DATA device_detail_data; | |
289 | DEVINST dev_inst = dev_inst_match; | |
290 | HANDLE host_controller_device; | |
291 | ||
292 | device_interface_data.cbSize = sizeof(device_interface_data); | |
293 | if (!SetupDiEnumDeviceInterfaces(device_info, 0, | |
294 | &GUID_CLASS_USB_HOST_CONTROLLER, | |
295 | i, &device_interface_data)) | |
296 | continue; | |
297 | ||
298 | if (!SetupDiGetDeviceInterfaceDetail(device_info,&device_interface_data, | |
299 | NULL, 0, &size, NULL) | |
300 | && GetLastError() != ERROR_INSUFFICIENT_BUFFER) | |
301 | continue; | |
302 | ||
303 | if (!(device_detail_data = malloc(size))) | |
304 | continue; | |
305 | device_detail_data->cbSize = sizeof(*device_detail_data); | |
306 | if (!SetupDiGetDeviceInterfaceDetail(device_info,&device_interface_data, | |
307 | device_detail_data, size, &size, | |
308 | NULL)) { | |
309 | free(device_detail_data); | |
310 | continue; | |
311 | } | |
312 | ||
313 | while (CM_Get_Parent(&dev_inst, dev_inst, 0) == CR_SUCCESS | |
314 | && dev_inst != device_info_data.DevInst) { } | |
315 | if (dev_inst != device_info_data.DevInst) { | |
316 | free(device_detail_data); | |
317 | continue; | |
318 | } | |
319 | ||
320 | port->usb_bus = i + 1; | |
321 | ||
322 | host_controller_device = CreateFile(device_detail_data->DevicePath, | |
323 | GENERIC_WRITE, FILE_SHARE_WRITE, | |
324 | NULL, OPEN_EXISTING, 0, NULL); | |
325 | if (host_controller_device != INVALID_HANDLE_VALUE) { | |
326 | enumerate_host_controller(port, host_controller_device); | |
327 | CloseHandle(host_controller_device); | |
328 | } | |
329 | free(device_detail_data); | |
330 | } | |
331 | ||
332 | SetupDiDestroyDeviceInfoList(device_info); | |
333 | return; | |
334 | } | |
335 | ||
970f279a | 336 | SP_PRIV enum sp_return get_port_details(struct sp_port *port) |
e33dcf90 | 337 | { |
dc422c04 UH |
338 | /* |
339 | * Description limited to 127 char, anything longer | |
340 | * would not be user friendly anyway. | |
341 | */ | |
e33dcf90 ML |
342 | char description[128]; |
343 | SP_DEVINFO_DATA device_info_data = { .cbSize = sizeof(device_info_data) }; | |
344 | HDEVINFO device_info; | |
345 | int i; | |
346 | ||
347 | device_info = SetupDiGetClassDevs(NULL, 0, 0, | |
348 | DIGCF_PRESENT | DIGCF_ALLCLASSES); | |
349 | if (device_info == INVALID_HANDLE_VALUE) | |
350 | RETURN_FAIL("SetupDiGetClassDevs() failed"); | |
351 | ||
dc422c04 | 352 | for (i = 0; SetupDiEnumDeviceInfo(device_info, i, &device_info_data); i++) { |
e33dcf90 ML |
353 | HKEY device_key; |
354 | DEVINST dev_inst; | |
355 | char value[8], class[16]; | |
356 | DWORD size, type; | |
357 | CONFIGRET cr; | |
358 | ||
dc422c04 | 359 | /* Check if this is the device we are looking for. */ |
b328a48b AJ |
360 | device_key = SetupDiOpenDevRegKey(device_info, &device_info_data, |
361 | DICS_FLAG_GLOBAL, 0, | |
362 | DIREG_DEV, KEY_QUERY_VALUE); | |
363 | if (device_key == INVALID_HANDLE_VALUE) | |
e33dcf90 ML |
364 | continue; |
365 | size = sizeof(value); | |
366 | if (RegQueryValueExA(device_key, "PortName", NULL, &type, (LPBYTE)value, | |
7aeb6736 AJ |
367 | &size) != ERROR_SUCCESS || type != REG_SZ) { |
368 | RegCloseKey(device_key); | |
e33dcf90 | 369 | continue; |
7aeb6736 | 370 | } |
e33dcf90 ML |
371 | RegCloseKey(device_key); |
372 | value[sizeof(value)-1] = 0; | |
373 | if (strcmp(value, port->name)) | |
374 | continue; | |
375 | ||
dc422c04 | 376 | /* Check port transport type. */ |
e33dcf90 ML |
377 | dev_inst = device_info_data.DevInst; |
378 | size = sizeof(class); | |
379 | cr = CR_FAILURE; | |
380 | while (CM_Get_Parent(&dev_inst, dev_inst, 0) == CR_SUCCESS && | |
381 | (cr = CM_Get_DevNode_Registry_PropertyA(dev_inst, | |
382 | CM_DRP_CLASS, 0, class, &size, 0)) != CR_SUCCESS) { } | |
383 | if (cr == CR_SUCCESS) { | |
384 | if (!strcmp(class, "USB")) | |
385 | port->transport = SP_TRANSPORT_USB; | |
386 | } | |
387 | ||
dc422c04 | 388 | /* Get port description (friendly name). */ |
e33dcf90 ML |
389 | dev_inst = device_info_data.DevInst; |
390 | size = sizeof(description); | |
391 | while ((cr = CM_Get_DevNode_Registry_PropertyA(dev_inst, | |
392 | CM_DRP_FRIENDLYNAME, 0, description, &size, 0)) != CR_SUCCESS | |
393 | && CM_Get_Parent(&dev_inst, dev_inst, 0) == CR_SUCCESS) { } | |
394 | if (cr == CR_SUCCESS) | |
395 | port->description = strdup(description); | |
396 | ||
dc422c04 | 397 | /* Get more informations for USB connected ports. */ |
e33dcf90 ML |
398 | if (port->transport == SP_TRANSPORT_USB) { |
399 | char usb_path[MAX_USB_PATH] = "", tmp[MAX_USB_PATH]; | |
400 | char device_id[MAX_DEVICE_ID_LEN]; | |
401 | ||
dc422c04 | 402 | /* Recurse over parents to build the USB device path. */ |
e33dcf90 ML |
403 | dev_inst = device_info_data.DevInst; |
404 | do { | |
dc422c04 | 405 | /* Verify that this layer of the tree is USB related. */ |
e33dcf90 ML |
406 | if (CM_Get_Device_IDA(dev_inst, device_id, |
407 | sizeof(device_id), 0) != CR_SUCCESS | |
408 | || strncmp(device_id, "USB\\", 4)) | |
409 | continue; | |
410 | ||
dc422c04 | 411 | /* Discard one layer for composite devices. */ |
e33dcf90 ML |
412 | char compat_ids[512], *p = compat_ids; |
413 | size = sizeof(compat_ids); | |
414 | if (CM_Get_DevNode_Registry_PropertyA(dev_inst, | |
415 | CM_DRP_COMPATIBLEIDS, 0, | |
416 | &compat_ids, | |
417 | &size, 0) == CR_SUCCESS) { | |
418 | while (*p) { | |
419 | if (!strncmp(p, "USB\\COMPOSITE", 13)) | |
420 | break; | |
421 | p += strlen(p) + 1; | |
422 | } | |
423 | if (*p) | |
424 | continue; | |
425 | } | |
426 | ||
dc422c04 | 427 | /* Stop the recursion when reaching the USB root. */ |
e33dcf90 ML |
428 | if (!strncmp(device_id, "USB\\ROOT", 8)) |
429 | break; | |
430 | ||
dc422c04 | 431 | /* Prepend the address of current USB layer to the USB path. */ |
e33dcf90 ML |
432 | DWORD address; |
433 | size = sizeof(address); | |
434 | if (CM_Get_DevNode_Registry_PropertyA(dev_inst, CM_DRP_ADDRESS, | |
435 | 0, &address, &size, 0) == CR_SUCCESS) { | |
436 | strcpy(tmp, usb_path); | |
437 | snprintf(usb_path, sizeof(usb_path), "%d%s%s", | |
438 | (int)address, *tmp ? "." : "", tmp); | |
439 | } | |
440 | } while (CM_Get_Parent(&dev_inst, dev_inst, 0) == CR_SUCCESS); | |
441 | ||
442 | port->usb_path = strdup(usb_path); | |
443 | ||
dc422c04 | 444 | /* Wake up the USB device to be able to read string descriptor. */ |
e33dcf90 ML |
445 | char *escaped_port_name; |
446 | HANDLE handle; | |
447 | if (!(escaped_port_name = malloc(strlen(port->name) + 5))) | |
448 | RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed"); | |
449 | sprintf(escaped_port_name, "\\\\.\\%s", port->name); | |
450 | handle = CreateFile(escaped_port_name, GENERIC_READ, 0, 0, | |
451 | OPEN_EXISTING, | |
452 | FILE_ATTRIBUTE_NORMAL|FILE_FLAG_OVERLAPPED, 0); | |
453 | free(escaped_port_name); | |
454 | CloseHandle(handle); | |
455 | ||
dc422c04 | 456 | /* Retrieve USB device details from the device descriptor. */ |
e33dcf90 ML |
457 | get_usb_details(port, device_info_data.DevInst); |
458 | } | |
459 | break; | |
460 | } | |
461 | ||
7aeb6736 AJ |
462 | SetupDiDestroyDeviceInfoList(device_info); |
463 | ||
e33dcf90 ML |
464 | RETURN_OK(); |
465 | } | |
466 | ||
970f279a | 467 | SP_PRIV enum sp_return list_ports(struct sp_port ***list) |
48a4076f AJ |
468 | { |
469 | HKEY key; | |
470 | TCHAR *value, *data; | |
471 | DWORD max_value_len, max_data_size, max_data_len; | |
472 | DWORD value_len, data_size, data_len; | |
473 | DWORD type, index = 0; | |
474 | char *name; | |
475 | int name_len; | |
476 | int ret = SP_OK; | |
477 | ||
478 | DEBUG("Opening registry key"); | |
479 | if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"), | |
480 | 0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS) { | |
481 | SET_FAIL(ret, "RegOpenKeyEx() failed"); | |
482 | goto out_done; | |
483 | } | |
484 | DEBUG("Querying registry key value and data sizes"); | |
485 | if (RegQueryInfoKey(key, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
486 | &max_value_len, &max_data_size, NULL, NULL) != ERROR_SUCCESS) { | |
487 | SET_FAIL(ret, "RegQueryInfoKey() failed"); | |
488 | goto out_close; | |
489 | } | |
490 | max_data_len = max_data_size / sizeof(TCHAR); | |
491 | if (!(value = malloc((max_value_len + 1) * sizeof(TCHAR)))) { | |
dc422c04 | 492 | SET_ERROR(ret, SP_ERR_MEM, "Registry value malloc failed"); |
48a4076f AJ |
493 | goto out_close; |
494 | } | |
495 | if (!(data = malloc((max_data_len + 1) * sizeof(TCHAR)))) { | |
dc422c04 | 496 | SET_ERROR(ret, SP_ERR_MEM, "Registry data malloc failed"); |
48a4076f AJ |
497 | goto out_free_value; |
498 | } | |
499 | DEBUG("Iterating over values"); | |
500 | while ( | |
501 | value_len = max_value_len + 1, | |
502 | data_size = max_data_size, | |
503 | RegEnumValue(key, index, value, &value_len, | |
504 | NULL, &type, (LPBYTE)data, &data_size) == ERROR_SUCCESS) | |
505 | { | |
7aeb6736 | 506 | if (type == REG_SZ) { |
6c444ade AJ |
507 | data_len = data_size / sizeof(TCHAR); |
508 | data[data_len] = '\0'; | |
48a4076f | 509 | #ifdef UNICODE |
6c444ade | 510 | name_len = WideCharToMultiByte(CP_ACP, 0, data, -1, NULL, 0, NULL, NULL); |
48a4076f | 511 | #else |
6c444ade | 512 | name_len = data_len + 1; |
48a4076f | 513 | #endif |
6c444ade | 514 | if (!(name = malloc(name_len))) { |
dc422c04 | 515 | SET_ERROR(ret, SP_ERR_MEM, "Registry port name malloc failed"); |
6c444ade AJ |
516 | goto out; |
517 | } | |
48a4076f | 518 | #ifdef UNICODE |
6c444ade | 519 | WideCharToMultiByte(CP_ACP, 0, data, -1, name, name_len, NULL, NULL); |
48a4076f | 520 | #else |
6c444ade | 521 | strcpy(name, data); |
48a4076f | 522 | #endif |
d38c7d2c | 523 | DEBUG_FMT("Found port %s", name); |
48a4076f | 524 | if (!(*list = list_append(*list, name))) { |
dc422c04 | 525 | SET_ERROR(ret, SP_ERR_MEM, "List append failed"); |
7aeb6736 | 526 | free(name); |
48a4076f AJ |
527 | goto out; |
528 | } | |
7aeb6736 | 529 | free(name); |
48a4076f AJ |
530 | } |
531 | index++; | |
532 | } | |
533 | out: | |
534 | free(data); | |
535 | out_free_value: | |
536 | free(value); | |
537 | out_close: | |
538 | RegCloseKey(key); | |
539 | out_done: | |
540 | ||
541 | return ret; | |
542 | } |