detect.c

#include "common.h"
#include "util.h"
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>

#define XML_BUFSIZE 0x10000

static void dump_xml_fragment(uint8_t *buf, uint32_t len)
{
  static int endianness = 0; // 0 = LE, 1 = BE
  uint32_t bp = 0;

  while (bp < len) {
    if (buf[bp+0] == 0xFF && buf[bp+1] == 0xFE) {
      endianness = 0;
    } else if (buf[bp+0] == 0xFE && buf[bp+1] == 0xff) {
      endianness = 1;
    } else {
      uint16_t tmp;

      if (endianness == 0) {
        tmp = buf[bp+1] << 8 | buf[bp+0];
      } else {
        tmp = buf[bp+0] << 8 | buf[bp+1];
      }
      // Fix this some day, we only print ISO 8859-1 correctly here,
      // should atleast support UTF-8.
      printf("%c", (uint8_t) tmp);
    }
    bp += 2;
  }
  printf("\n");
}

int main (int argc, char **argv)
{
  LIBMTP_raw_device_t * rawdevices;
  int numrawdevices;
  LIBMTP_error_number_t err;
  int i;

  int opt;
  extern int optind;
  extern char *optarg;

  while ((opt = getopt(argc, argv, "d")) != -1 ) {
    switch (opt) {
    case 'd':
      LIBMTP_Set_Debug(LIBMTP_DEBUG_PTP | LIBMTP_DEBUG_DATA);
      break;
    }
  }

  argc -= optind;
  argv += optind;

  LIBMTP_Init();

  fprintf(stdout, "libmtp version: " LIBMTP_VERSION_STRING "\n\n");

  fprintf(stdout, "Listing raw device(s)\n");
  err = LIBMTP_Detect_Raw_Devices(&rawdevices, &numrawdevices);
  switch(err) {
  case LIBMTP_ERROR_NO_DEVICE_ATTACHED:
    fprintf(stdout, "   No raw devices found.\n");
    return 0;
  case LIBMTP_ERROR_CONNECTING:
    fprintf(stderr, "Detect: There has been an error connecting. Exiting\n");
    return 1;
  case LIBMTP_ERROR_MEMORY_ALLOCATION:
    fprintf(stderr, "Detect: Encountered a Memory Allocation Error. Exiting\n");
    return 1;
  case LIBMTP_ERROR_NONE:
    {
      int i;

      fprintf(stdout, "   Found %d device(s):\n", numrawdevices);
      for (i = 0; i < numrawdevices; i++) {
        if (rawdevices[i].device_entry.vendor != NULL ||
            rawdevices[i].device_entry.product != NULL) {
          fprintf(stdout, "   %s: %s (%04x:%04x) @ bus %d, dev %d\n",
                  rawdevices[i].device_entry.vendor,
                  rawdevices[i].device_entry.product,
                  rawdevices[i].device_entry.vendor_id,
                  rawdevices[i].device_entry.product_id,
                  rawdevices[i].bus_location,
                  rawdevices[i].devnum);
        } else {
          fprintf(stdout, "   %04x:%04x @ bus %d, dev %d\n",
                  rawdevices[i].device_entry.vendor_id,
                  rawdevices[i].device_entry.product_id,
                  rawdevices[i].bus_location,
                  rawdevices[i].devnum);
        }
      }
    }
    break;
  case LIBMTP_ERROR_GENERAL:
  default:
    fprintf(stderr, "Unknown connection error.\n");
    return 1;
  }

  /* Iterate over connected MTP devices */
  fprintf(stdout, "Attempting to connect device(s)\n");
  for (i = 0; i < numrawdevices; i++) {
    LIBMTP_mtpdevice_t *device;
    LIBMTP_devicestorage_t *storage;
    char *friendlyname;
    char *syncpartner;
    char *sectime;
    char *devcert;
    uint16_t *filetypes;
    uint16_t filetypes_len;
    uint8_t maxbattlevel;
    uint8_t currbattlevel;
    int ret;

    device = LIBMTP_Open_Raw_Device_Uncached(&rawdevices[i]);
    if (device == NULL) {
      fprintf(stderr, "Unable to open raw device %d\n", i);
      continue;
    }

    LIBMTP_Dump_Errorstack(device);
    LIBMTP_Clear_Errorstack(device);
    LIBMTP_Dump_Device_Info(device);

    printf("MTP-specific device properties:\n");
    // The friendly name
    friendlyname = LIBMTP_Get_Friendlyname(device);
    if (friendlyname == NULL) {
      fprintf(stdout, "   Friendly name: (NULL)\n");
    } else {
      fprintf(stdout, "   Friendly name: %s\n", friendlyname);
      free(friendlyname);
    }
    syncpartner = LIBMTP_Get_Syncpartner(device);
    if (syncpartner == NULL) {
      fprintf(stdout, "   Synchronization partner: (NULL)\n");
    } else {
      fprintf(stdout, "   Synchronization partner: %s\n", syncpartner);
      free(syncpartner);
    }

    // Some battery info
    ret = LIBMTP_Get_Batterylevel(device, &maxbattlevel, &currbattlevel);
    if (ret == 0) {
      fprintf(stdout, "   Battery level %d of %d (%d%%)\n",currbattlevel, maxbattlevel,
              (int) ((float) currbattlevel/ (float) maxbattlevel * 100.0));
    } else {
      // Silently ignore. Some devices does not support getting the
      // battery level.
      LIBMTP_Clear_Errorstack(device);
    }

    ret = LIBMTP_Get_Supported_Filetypes(device, &filetypes, &filetypes_len);
    if (ret == 0) {
      uint16_t i;

      printf("libmtp supported (playable) filetypes:\n");
      for (i = 0; i < filetypes_len; i++) {
        fprintf(stdout, "   %s\n", LIBMTP_Get_Filetype_Description(filetypes[i]));
      }
    } else {
      LIBMTP_Dump_Errorstack(device);
      LIBMTP_Clear_Errorstack(device);
    }

    // Secure time XML fragment
    ret = LIBMTP_Get_Secure_Time(device, &sectime);
    if (ret == 0 && sectime != NULL) {
      fprintf(stdout, "\nSecure Time:\n%s\n", sectime);
      free(sectime);
    } else {
      // Silently ignore - there may be devices not supporting secure time.
      LIBMTP_Clear_Errorstack(device);
    }

    // Device certificate XML fragment
    if (rawdevices[i].device_entry.vendor_id == 0x041e) {
      /*
       * This code is currently disabled except for vendors we
       * know does support it: all devices say that
       * they support getting a device certificate but a lot of
       * them obviously doesn't, instead they crash when you try
       * to obtain it.
       */
      ret = LIBMTP_Get_Device_Certificate(device, &devcert);
      if (ret == 0 && devcert != NULL) {
        fprintf(stdout, "\nDevice Certificate:\n%s\n", devcert);
        free(devcert);
      } else {
        fprintf(stdout, "Unable to acquire device certificate, perhaps this device "
                "does not support this\n");
        LIBMTP_Dump_Errorstack(device);
        LIBMTP_Clear_Errorstack(device);
      }
    }

    /* Try to get Media player device info XML file... */
    /* Loop over storages */
    for (storage = device->storage; storage != 0; storage = storage->next) {
      LIBMTP_file_t *files;

      /* Get file listing for the root directory, no other dirs */
      files = LIBMTP_Get_Files_And_Folders(device,
                                           storage->id,
                                           LIBMTP_FILES_AND_FOLDERS_ROOT);

      if (files != NULL) {
        LIBMTP_file_t *file, *tmp;
        file = files;
        while (file != NULL) {
          if (!strcmp(file->filename, "WMPInfo.xml") ||
              !strcmp(file->filename, "WMPinfo.xml") ||
              !strcmp(file->filename, "default-capabilities.xml")) {
            if (file->item_id != 0) {
              /* Dump this file */
              FILE *xmltmp = tmpfile();
              int tmpfiledescriptor = fileno(xmltmp);

              if (tmpfiledescriptor != -1) {
                int ret = LIBMTP_Get_Track_To_File_Descriptor(device,
                                                              file->item_id,
                                                              tmpfiledescriptor,
                                                              NULL,
                                                              NULL);
                if (ret == 0) {
                  uint8_t *buf = NULL;
                  uint32_t readbytes;

                  buf = malloc(XML_BUFSIZE);
                  if (buf == NULL) {
                    printf("Could not allocate %08x bytes...\n", XML_BUFSIZE);
                    LIBMTP_Dump_Errorstack(device);
                    LIBMTP_Clear_Errorstack(device);
                    free(rawdevices);
                    return 1;
                  }

                  lseek(tmpfiledescriptor, 0, SEEK_SET);
                  readbytes = read(tmpfiledescriptor, (void*) buf, XML_BUFSIZE);

                  if (readbytes >= 2 && readbytes < XML_BUFSIZE) {
                    fprintf(stdout, "\n%s file contents:\n", file->filename);
                    dump_xml_fragment(buf, readbytes);
                  } else {
                    perror("Unable to read file");
                    LIBMTP_Dump_Errorstack(device);
                    LIBMTP_Clear_Errorstack(device);
                  }
                  free(buf);
                } else {
                  LIBMTP_Dump_Errorstack(device);
                  LIBMTP_Clear_Errorstack(device);
                }
                fclose(xmltmp);
              }
            }
          }
          tmp = file;
          file = file->next;
          LIBMTP_destroy_file_t(tmp);
        }
      }
    }
    LIBMTP_Release_Device(device);
  } /* End For Loop */

  free(rawdevices);

  printf("OK.\n");

  return 0;
}

Generated on 26 Jun 2017 for libmtp by  doxygen 1.6.1