macosx.c

   1 /*
   2  * This file is part of the libserialport project.
   3  *
   4  * Copyright (C) 2013-2014 Martin Ling <martin-libserialport@earth.li>
   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
  24 enum sp_return get_port_details(struct sp_port *port)
  25 {
  26         /* Description limited to 127 char,
  27            anything longer would not be user friendly anyway */
  28         char description[128];
  29         int bus, address, vid, pid = -1;
  30         char manufacturer[128], product[128], serial[128];
  31         char baddr[32];
  32         CFMutableDictionaryRef classes;
  33         io_iterator_t iter;
  34         io_object_t ioport;
  35         CFTypeRef cf_property, cf_bus, cf_address, cf_vendor, cf_product;
  36         Boolean result;
  37         char path[PATH_MAX];
  38
  39         DEBUG("Getting serial port list");
  40         if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue)))
  41                 RETURN_FAIL("IOServiceMatching() failed");
  42
  43         if (IOServiceGetMatchingServices(kIOMasterPortDefault, classes,
  44                                          &iter) != KERN_SUCCESS)
  45                 RETURN_FAIL("IOServiceGetMatchingServices() failed");
  46
  47         DEBUG("Iterating over results");
  48         while ((ioport = IOIteratorNext(iter))) {
  49                 if (!(cf_property = IORegistryEntryCreateCFProperty(ioport,
  50                             CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0))) {
  51                         IOObjectRelease(ioport);
  52                         continue;
  53                 }
  54                 result = CFStringGetCString(cf_property, path, sizeof(path),
  55                                             kCFStringEncodingASCII);
  56                 CFRelease(cf_property);
  57                 if (!result || strcmp(path, port->name)) {
  58                         IOObjectRelease(ioport);
  59                         continue;
  60                 }
  61                 DEBUG("Found port %s", path);
  62
  63                 IORegistryEntryGetParentEntry(ioport, kIOServicePlane, &ioparent);
  64                 if ((cf_property=IORegistryEntrySearchCFProperty(ioparent,kIOServicePlane,
  65                            CFSTR("IOProviderClass"), kCFAllocatorDefault,
  66                            kIORegistryIterateRecursively | kIORegistryIterateParents))) {
  67                         if (CFStringGetCString(cf_property, class, sizeof(class),
  68                                                kCFStringEncodingASCII) &&
  69                             strstr(class, "USB")) {
  70                                 DEBUG("Found USB class device");
  71                                 port->transport = SP_TRANSPORT_USB;
  72                         }
  73                         CFRelease(cf_property);
  74                 }
  75                 IOObjectRelease(ioparent);
  76
  77                 if ((cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
  78                          CFSTR("USB Interface Name"), kCFAllocatorDefault,
  79                          kIORegistryIterateRecursively | kIORegistryIterateParents)) ||
  80                     (cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
  81                          CFSTR("USB Product Name"), kCFAllocatorDefault,
  82                          kIORegistryIterateRecursively | kIORegistryIterateParents)) ||
  83                     (cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
  84                          CFSTR("Product Name"), kCFAllocatorDefault,
  85                          kIORegistryIterateRecursively | kIORegistryIterateParents)) ||
  86                     (cf_property = IORegistryEntryCreateCFProperty(ioport,
  87                          CFSTR(kIOTTYDeviceKey), kCFAllocatorDefault, 0))) {
  88                         if (CFStringGetCString(cf_property, description, sizeof(description),
  89                                                kCFStringEncodingASCII)) {
  90                                 DEBUG("Found description %s", description);
  91                                 port->description = strdup(description);
  92                         }
  93                         CFRelease(cf_property);
  94                 } else {
  95                         DEBUG("No description for this device");
  96                 }
  97
  98                 cf_bus = IORegistryEntrySearchCFProperty(ioport, kIOServicePlane,
  99                                                          CFSTR("USBBusNumber"),
 100                                                          kCFAllocatorDefault,
 101                                                          kIORegistryIterateRecursively
 102                                                          | kIORegistryIterateParents);
 103                 cf_address = IORegistryEntrySearchCFProperty(ioport, kIOServicePlane,
 104                                                          CFSTR("USB Address"),
 105                                                          kCFAllocatorDefault,
 106                                                          kIORegistryIterateRecursively
 107                                                          | kIORegistryIterateParents);
 108                 if (cf_bus && cf_address &&
 109                     CFNumberGetValue(cf_bus    , kCFNumberIntType, &bus) &&
 110                     CFNumberGetValue(cf_address, kCFNumberIntType, &address)) {
 111                         DEBUG("Found matching USB bus:address %03d:%03d", bus, address);
 112                         port->usb_bus = bus;
 113                         port->usb_address = address;
 114                 }
 115                 if (cf_bus    )  CFRelease(cf_bus);
 116                 if (cf_address)  CFRelease(cf_address);
 117
 118                 cf_vendor = IORegistryEntrySearchCFProperty(ioport, kIOServicePlane,
 119                                                          CFSTR("idVendor"),
 120                                                          kCFAllocatorDefault,
 121                                                          kIORegistryIterateRecursively
 122                                                          | kIORegistryIterateParents);
 123                 cf_product = IORegistryEntrySearchCFProperty(ioport, kIOServicePlane,
 124                                                          CFSTR("idProduct"),
 125                                                          kCFAllocatorDefault,
 126                                                          kIORegistryIterateRecursively
 127                                                          | kIORegistryIterateParents);
 128                 if (cf_vendor && cf_product &&
 129                     CFNumberGetValue(cf_vendor , kCFNumberIntType, &vid) &&
 130                     CFNumberGetValue(cf_product, kCFNumberIntType, &pid)) {
 131                         DEBUG("Found matching USB vid:pid %04X:%04X", vid, pid);
 132                         port->usb_vid = vid;
 133                         port->usb_pid = pid;
 134                 }
 135                 if (cf_vendor )  CFRelease(cf_vendor);
 136                 if (cf_product)  CFRelease(cf_product);
 137
 138                 if ((cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
 139                          CFSTR("USB Vendor Name"), kCFAllocatorDefault,
 140                          kIORegistryIterateRecursively | kIORegistryIterateParents))) {
 141                         if (CFStringGetCString(cf_property, manufacturer, sizeof(manufacturer),
 142                                                kCFStringEncodingASCII)) {
 143                                 DEBUG("Found manufacturer %s", manufacturer);
 144                                 port->usb_manufacturer = strdup(manufacturer);
 145                         }
 146                         CFRelease(cf_property);
 147                 }
 148
 149                 if ((cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
 150                          CFSTR("USB Product Name"), kCFAllocatorDefault,
 151                          kIORegistryIterateRecursively | kIORegistryIterateParents))) {
 152                         if (CFStringGetCString(cf_property, product, sizeof(product),
 153                                                kCFStringEncodingASCII)) {
 154                                 DEBUG("Found product name %s", product);
 155                                 port->usb_product = strdup(product);
 156                         }
 157                         CFRelease(cf_property);
 158                 }
 159
 160                 if ((cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
 161                          CFSTR("USB Serial Number"), kCFAllocatorDefault,
 162                          kIORegistryIterateRecursively | kIORegistryIterateParents))) {
 163                         if (CFStringGetCString(cf_property, serial, sizeof(serial),
 164                                                kCFStringEncodingASCII)) {
 165                                 DEBUG("Found serial number %s", serial);
 166                                 port->usb_serial = strdup(serial);
 167                         }
 168                         CFRelease(cf_property);
 169                 }
 170
 171                 IOObjectRelease(ioport);
 172                 break;
 173         }
 174         IOObjectRelease(iter);
 175
 176         RETURN_OK();
 177 }