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         CFMutableDictionaryRef classes;
  32         io_iterator_t iter;
  33         io_object_t ioport, ioparent;
  34         CFTypeRef cf_property, cf_bus, cf_address, cf_vendor, cf_product;
  35         Boolean result;
  36         char path[PATH_MAX], class[16];
  37
  38         DEBUG("Getting serial port list");
  39         if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue)))
  40                 RETURN_FAIL("IOServiceMatching() failed");
  41
  42         if (IOServiceGetMatchingServices(kIOMasterPortDefault, classes,
  43                                          &iter) != KERN_SUCCESS)
  44                 RETURN_FAIL("IOServiceGetMatchingServices() failed");
  45
  46         DEBUG("Iterating over results");
  47         while ((ioport = IOIteratorNext(iter))) {
  48                 if (!(cf_property = IORegistryEntryCreateCFProperty(ioport,
  49                             CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0))) {
  50                         IOObjectRelease(ioport);
  51                         continue;
  52                 }
  53                 result = CFStringGetCString(cf_property, path, sizeof(path),
  54                                             kCFStringEncodingASCII);
  55                 CFRelease(cf_property);
  56                 if (!result || strcmp(path, port->name)) {
  57                         IOObjectRelease(ioport);
  58                         continue;
  59                 }
  60                 DEBUG("Found port %s", path);
  61
  62                 IORegistryEntryGetParentEntry(ioport, kIOServicePlane, &ioparent);
  63                 if ((cf_property=IORegistryEntrySearchCFProperty(ioparent,kIOServicePlane,
  64                            CFSTR("IOProviderClass"), kCFAllocatorDefault,
  65                            kIORegistryIterateRecursively | kIORegistryIterateParents))) {
  66                         if (CFStringGetCString(cf_property, class, sizeof(class),
  67                                                kCFStringEncodingASCII) &&
  68                             strstr(class, "USB")) {
  69                                 DEBUG("Found USB class device");
  70                                 port->transport = SP_TRANSPORT_USB;
  71                         }
  72                         CFRelease(cf_property);
  73                 }
  74                 IOObjectRelease(ioparent);
  75
  76                 if ((cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
  77                          CFSTR("USB Interface Name"), kCFAllocatorDefault,
  78                          kIORegistryIterateRecursively | kIORegistryIterateParents)) ||
  79                     (cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
  80                          CFSTR("USB Product Name"), kCFAllocatorDefault,
  81                          kIORegistryIterateRecursively | kIORegistryIterateParents)) ||
  82                     (cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
  83                          CFSTR("Product Name"), kCFAllocatorDefault,
  84                          kIORegistryIterateRecursively | kIORegistryIterateParents)) ||
  85                     (cf_property = IORegistryEntryCreateCFProperty(ioport,
  86                          CFSTR(kIOTTYDeviceKey), kCFAllocatorDefault, 0))) {
  87                         if (CFStringGetCString(cf_property, description, sizeof(description),
  88                                                kCFStringEncodingASCII)) {
  89                                 DEBUG("Found description %s", description);
  90                                 port->description = strdup(description);
  91                         }
  92                         CFRelease(cf_property);
  93                 } else {
  94                         DEBUG("No description for this device");
  95                 }
  96
  97                 cf_bus = IORegistryEntrySearchCFProperty(ioport, kIOServicePlane,
  98                                                          CFSTR("USBBusNumber"),
  99                                                          kCFAllocatorDefault,
 100                                                          kIORegistryIterateRecursively
 101                                                          | kIORegistryIterateParents);
 102                 cf_address = IORegistryEntrySearchCFProperty(ioport, kIOServicePlane,
 103                                                          CFSTR("USB Address"),
 104                                                          kCFAllocatorDefault,
 105                                                          kIORegistryIterateRecursively
 106                                                          | kIORegistryIterateParents);
 107                 if (cf_bus && cf_address &&
 108                     CFNumberGetValue(cf_bus    , kCFNumberIntType, &bus) &&
 109                     CFNumberGetValue(cf_address, kCFNumberIntType, &address)) {
 110                         DEBUG("Found matching USB bus:address %03d:%03d", bus, address);
 111                         port->usb_bus = bus;
 112                         port->usb_address = address;
 113                 }
 114                 if (cf_bus    )  CFRelease(cf_bus);
 115                 if (cf_address)  CFRelease(cf_address);
 116
 117                 cf_vendor = IORegistryEntrySearchCFProperty(ioport, kIOServicePlane,
 118                                                          CFSTR("idVendor"),
 119                                                          kCFAllocatorDefault,
 120                                                          kIORegistryIterateRecursively
 121                                                          | kIORegistryIterateParents);
 122                 cf_product = IORegistryEntrySearchCFProperty(ioport, kIOServicePlane,
 123                                                          CFSTR("idProduct"),
 124                                                          kCFAllocatorDefault,
 125                                                          kIORegistryIterateRecursively
 126                                                          | kIORegistryIterateParents);
 127                 if (cf_vendor && cf_product &&
 128                     CFNumberGetValue(cf_vendor , kCFNumberIntType, &vid) &&
 129                     CFNumberGetValue(cf_product, kCFNumberIntType, &pid)) {
 130                         DEBUG("Found matching USB vid:pid %04X:%04X", vid, pid);
 131                         port->usb_vid = vid;
 132                         port->usb_pid = pid;
 133                 }
 134                 if (cf_vendor )  CFRelease(cf_vendor);
 135                 if (cf_product)  CFRelease(cf_product);
 136
 137                 if ((cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
 138                          CFSTR("USB Vendor Name"), kCFAllocatorDefault,
 139                          kIORegistryIterateRecursively | kIORegistryIterateParents))) {
 140                         if (CFStringGetCString(cf_property, manufacturer, sizeof(manufacturer),
 141                                                kCFStringEncodingASCII)) {
 142                                 DEBUG("Found manufacturer %s", manufacturer);
 143                                 port->usb_manufacturer = strdup(manufacturer);
 144                         }
 145                         CFRelease(cf_property);
 146                 }
 147
 148                 if ((cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
 149                          CFSTR("USB Product Name"), kCFAllocatorDefault,
 150                          kIORegistryIterateRecursively | kIORegistryIterateParents))) {
 151                         if (CFStringGetCString(cf_property, product, sizeof(product),
 152                                                kCFStringEncodingASCII)) {
 153                                 DEBUG("Found product name %s", product);
 154                                 port->usb_product = strdup(product);
 155                         }
 156                         CFRelease(cf_property);
 157                 }
 158
 159                 if ((cf_property = IORegistryEntrySearchCFProperty(ioport,kIOServicePlane,
 160                          CFSTR("USB Serial Number"), kCFAllocatorDefault,
 161                          kIORegistryIterateRecursively | kIORegistryIterateParents))) {
 162                         if (CFStringGetCString(cf_property, serial, sizeof(serial),
 163                                                kCFStringEncodingASCII)) {
 164                                 DEBUG("Found serial number %s", serial);
 165                                 port->usb_serial = strdup(serial);
 166                         }
 167                         CFRelease(cf_property);
 168                 }
 169
 170                 IOObjectRelease(ioport);
 171                 break;
 172         }
 173         IOObjectRelease(iter);
 174
 175         RETURN_OK();
 176 }