1 /*=========================================================================
4 Module: $RCSfile: gdcmUtil.cxx,v $
6 Date: $Date: 2005/01/10 22:54:34 $
7 Version: $Revision: 1.88 $
9 Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
10 l'Image). All rights reserved. See Doc/License.txt or
11 http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
13 This software is distributed WITHOUT ANY WARRANTY; without even
14 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 PURPOSE. See the above copyright notices for more information.
17 =========================================================================*/
20 #include "gdcmDebug.h"
23 // For GetCurrentDate, GetCurrentTime
25 #include <sys/types.h>
28 #include <stdarg.h> //only included in implementation file
29 #include <stdio.h> //only included in implementation file
32 #include <winsock.h> // for gethostname & gethostbyname
36 #include <unistd.h> // for gethostname
37 #include <netdb.h> // for gethostbyname
50 #include <strings.h> //for bzero on unix
54 #include <sys/ioctl.h>
55 #include <sys/types.h>
56 #include <sys/socket.h>
57 #include <netinet/in.h>
62 #include <sys/types.h>
63 #include <sys/socket.h>
65 #include <net/if_dl.h>
73 #include <sys/ndd_var.h>
74 #include <sys/kinfo.h>
78 #include <CoreFoundation/CoreFoundation.h>
79 #include <IOKit/IOKitLib.h>
80 #include <IOKit/network/IOEthernetInterface.h>
81 #include <IOKit/network/IONetworkInterface.h>
82 #include <IOKit/network/IOEthernetController.h>
84 // End For GetMACAddress
90 * \brief Provide a better 'c++' approach for sprintf
91 * For example c code is:
92 * sprintf(trash, "%04x|%04x", group , elem);
95 * std::ostringstream buf;
96 * buf << std::right << std::setw(4) << std::setfill('0') << std::hex
97 * << group << "|" << std::right << std::setw(4) << std::setfill('0')
98 * << std::hex << elem;
102 * Format("%04x|%04x", group , elem);
105 std::string Util::Format(const char *format, ...)
109 va_start(args, format);
110 vsprintf(buffer, format, args); //might be a security flaw
111 va_end(args); // Each invocation of va_start should be matched
112 // by a corresponding invocation of va_end
113 // args is then 'undefined'
120 * \brief Because not available in C++ (?)
122 void Util::Tokenize (const std::string &str,
123 std::vector<std::string> &tokens,
124 const std::string& delimiters)
126 std::string::size_type lastPos = str.find_first_not_of(delimiters,0);
127 std::string::size_type pos = str.find_first_of (delimiters,lastPos);
128 while (std::string::npos != pos || std::string::npos != lastPos)
130 tokens.push_back(str.substr(lastPos, pos - lastPos));
131 lastPos = str.find_first_not_of(delimiters, pos);
132 pos = str.find_first_of (delimiters, lastPos);
138 * \brief Because not available in C++ (?)
139 * Counts the number of occurences of a substring within a string
142 int Util::CountSubstring (const std::string &str,
143 const std::string &subStr)
145 int count = 0; // counts how many times it appears
146 std::string::size_type x = 0; // The index position in the string
150 x = str.find(subStr,x); // Find the substring
151 if (x != std::string::npos) // If present
153 count++; // increase the count
154 x += subStr.length(); // Skip this word
157 while (x != std::string::npos); // Carry on until not present
164 * \brief Weed out a string from the non-printable characters (in order
165 * to avoid corrupting the terminal of invocation when printing)
166 * @param s string to remove non printable characters from
168 std::string Util::CreateCleanString(std::string const &s)
172 for(unsigned int i=0; i<str.size(); i++)
174 if(!isprint((unsigned char)str[i]))
182 if(!isprint((unsigned char)s[str.size()-1]))
184 if(s[str.size()-1] == 0)
186 str[str.size()-1] = ' ';
196 * \brief Add a SEPARATOR to the end of the name is necessary
197 * @param pathname file/directory name to normalize
199 std::string Util::NormalizePath(std::string const &pathname)
201 const char SEPARATOR_X = '/';
202 const char SEPARATOR_WIN = '\\';
203 const std::string SEPARATOR = "/";
204 std::string name = pathname;
205 int size = name.size();
207 if( name[size-1] != SEPARATOR_X && name[size-1] != SEPARATOR_WIN )
216 * \brief Get the (directory) path from a full path file name
217 * @param fullName file/directory name to extract Path from
219 std::string Util::GetPath(std::string const &fullName)
221 std::string res = fullName;
222 int pos1 = res.rfind("/");
223 int pos2 = res.rfind("\\");
238 * \brief Get the (last) name of a full path file name
239 * @param fullName file/directory name to extract end name from
241 std::string Util::GetName(std::string const &fullName)
243 std::string filename = fullName;
245 std::string::size_type slash_pos = filename.rfind("/");
246 std::string::size_type backslash_pos = filename.rfind("\\");
247 slash_pos = slash_pos > backslash_pos ? slash_pos : backslash_pos;
248 if(slash_pos != std::string::npos)
250 return filename.substr(slash_pos + 1);
260 * \brief Get the current date of the system in a dicom string
262 std::string Util::GetCurrentDate()
267 strftime(tmp,512,"%Y%m%d", localtime(&tloc) );
273 * \brief Get the current time of the system in a dicom string
275 std::string Util::GetCurrentTime()
280 strftime(tmp,512,"%H%M%S", localtime(&tloc) );
285 * \brief Create a /DICOM/ string:
286 * It should a of even length (no odd length ever)
287 * It can contain as many (if you are reading this from your
288 * editor the following character is is backslash followed by zero
289 * that needed to be escaped with an extra backslash for doxygen) \\0
292 std::string Util::DicomString(const char *s, size_t l)
294 std::string r(s, s+l);
295 gdcmAssertMacro( !(r.size() % 2) ); // == basically 'l' is even
301 * \brief Create a /DICOM/ string:
302 * It should a of even lenght (no odd length ever)
303 * It can contain as many (if you are reading this from your
304 * editor the following character is is backslash followed by zero
305 * that needed to be escaped with an extra backslash for doxygen) \\0
307 * This function is similar to DicomString(const char*),
308 * except it doesn't take a lenght.
309 * It only pad with a null character if length is odd
311 std::string Util::DicomString(const char *s)
313 size_t l = strlen(s);
318 std::string r(s, s+l);
319 gdcmAssertMacro( !(r.size() % 2) );
325 * \brief Safely compare two Dicom String:
326 * - Both string should be of even lenght
327 * - We allow padding of even lenght string by either a null
328 * character of a space
330 bool Util::DicomStringEqual(const std::string &s1, const char *s2)
332 // s2 is the string from the DICOM reference: 'MONOCHROME1'
333 std::string s1_even = s1; //Never change input parameter
334 std::string s2_even = DicomString( s2 );
335 if( s1_even[s1_even.size()-1] == ' ')
337 s1_even[s1_even.size()-1] = '\0'; //replace space character by null
339 return s1_even == s2_even;
346 * \brief tells us if the processor we are working with is BigEndian or not
348 bool Util::IsCurrentProcessorBigEndian()
351 uint8_t bigEndianRepr[4] = { 0x00, 0x00, 0x00, 0x01 };
352 int res = memcmp(reinterpret_cast<const void*>(&intVal),
353 reinterpret_cast<const void*>(bigEndianRepr), 4);
363 typedef BOOL(WINAPI * pSnmpExtensionInit) (
364 IN DWORD dwTimeZeroReference,
365 OUT HANDLE * hPollForTrapEvent,
366 OUT AsnObjectIdentifier * supportedView);
368 typedef BOOL(WINAPI * pSnmpExtensionTrap) (
369 OUT AsnObjectIdentifier * enterprise,
370 OUT AsnInteger * genericTrap,
371 OUT AsnInteger * specificTrap,
372 OUT AsnTimeticks * timeStamp,
373 OUT RFC1157VarBindList * variableBindings);
375 typedef BOOL(WINAPI * pSnmpExtensionQuery) (
377 IN OUT RFC1157VarBindList * variableBindings,
378 OUT AsnInteger * errorStatus,
379 OUT AsnInteger * errorIndex);
381 typedef BOOL(WINAPI * pSnmpExtensionInitEx) (
382 OUT AsnObjectIdentifier * supportedView);
387 // Returns an iterator containing the primary (built-in) Ethernet interface. The caller is responsible for
388 // releasing the iterator after the caller is done with it.
389 static kern_return_t FindEthernetInterfaces(io_iterator_t *matchingServices)
391 kern_return_t kernResult;
392 mach_port_t masterPort;
393 CFMutableDictionaryRef matchingDict;
394 CFMutableDictionaryRef propertyMatchDict;
396 // Retrieve the Mach port used to initiate communication with I/O Kit
397 kernResult = IOMasterPort(MACH_PORT_NULL, &masterPort);
398 if (KERN_SUCCESS != kernResult)
400 printf("IOMasterPort returned %d\n", kernResult);
404 // Ethernet interfaces are instances of class kIOEthernetInterfaceClass.
405 // IOServiceMatching is a convenience function to create a dictionary with the key kIOProviderClassKey and
406 // the specified value.
407 matchingDict = IOServiceMatching(kIOEthernetInterfaceClass);
409 // Note that another option here would be:
410 // matchingDict = IOBSDMatching("en0");
412 if (NULL == matchingDict)
414 printf("IOServiceMatching returned a NULL dictionary.\n");
417 // Each IONetworkInterface object has a Boolean property with the key kIOPrimaryInterface. Only the
418 // primary (built-in) interface has this property set to TRUE.
420 // IOServiceGetMatchingServices uses the default matching criteria defined by IOService. This considers
421 // only the following properties plus any family-specific matching in this order of precedence
422 // (see IOService::passiveMatch):
424 // kIOProviderClassKey (IOServiceMatching)
425 // kIONameMatchKey (IOServiceNameMatching)
426 // kIOPropertyMatchKey
428 // kIOMatchedServiceCountKey
429 // family-specific matching
430 // kIOBSDNameKey (IOBSDNameMatching)
431 // kIOLocationMatchKey
433 // The IONetworkingFamily does not define any family-specific matching. This means that in
434 // order to have IOServiceGetMatchingServices consider the kIOPrimaryInterface property, we must
435 // add that property to a separate dictionary and then add that to our matching dictionary
436 // specifying kIOPropertyMatchKey.
438 propertyMatchDict = CFDictionaryCreateMutable( kCFAllocatorDefault, 0,
439 &kCFTypeDictionaryKeyCallBacks,
440 &kCFTypeDictionaryValueCallBacks);
442 if (NULL == propertyMatchDict)
444 printf("CFDictionaryCreateMutable returned a NULL dictionary.\n");
447 // Set the value in the dictionary of the property with the given key, or add the key
448 // to the dictionary if it doesn't exist. This call retains the value object passed in.
449 CFDictionarySetValue(propertyMatchDict, CFSTR(kIOPrimaryInterface), kCFBooleanTrue);
451 // Now add the dictionary containing the matching value for kIOPrimaryInterface to our main
452 // matching dictionary. This call will retain propertyMatchDict, so we can release our reference
453 // on propertyMatchDict after adding it to matchingDict.
454 CFDictionarySetValue(matchingDict, CFSTR(kIOPropertyMatchKey), propertyMatchDict);
455 CFRelease(propertyMatchDict);
459 // IOServiceGetMatchingServices retains the returned iterator, so release the iterator when we're done with it.
460 // IOServiceGetMatchingServices also consumes a reference on the matching dictionary so we don't need to release
461 // the dictionary explicitly.
462 kernResult = IOServiceGetMatchingServices(masterPort, matchingDict, matchingServices);
463 if (KERN_SUCCESS != kernResult)
465 printf("IOServiceGetMatchingServices returned %d\n", kernResult);
471 // Given an iterator across a set of Ethernet interfaces, return the MAC address of the last one.
472 // If no interfaces are found the MAC address is set to an empty string.
473 // In this sample the iterator should contain just the primary interface.
474 static kern_return_t GetMACAddress_MAC(io_iterator_t intfIterator, UInt8 *MACAddress)
476 io_object_t intfService;
477 io_object_t controllerService;
478 kern_return_t kernResult = KERN_FAILURE;
480 // Initialize the returned address
481 bzero(MACAddress, kIOEthernetAddressSize);
483 // IOIteratorNext retains the returned object, so release it when we're done with it.
484 while ( (intfService = IOIteratorNext(intfIterator)))
486 CFTypeRef MACAddressAsCFData;
488 // IONetworkControllers can't be found directly by the IOServiceGetMatchingServices call,
489 // since they are hardware nubs and do not participate in driver matching. In other words,
490 // registerService() is never called on them. So we've found the IONetworkInterface and will
491 // get its parent controller by asking for it specifically.
493 // IORegistryEntryGetParentEntry retains the returned object, so release it when we're done with it.
494 kernResult = IORegistryEntryGetParentEntry( intfService,
496 &controllerService );
498 if (KERN_SUCCESS != kernResult)
500 printf("IORegistryEntryGetParentEntry returned 0x%08x\n", kernResult);
503 // Retrieve the MAC address property from the I/O Registry in the form of a CFData
504 MACAddressAsCFData = IORegistryEntryCreateCFProperty( controllerService,
505 CFSTR(kIOMACAddress),
508 if (MACAddressAsCFData)
510 CFShow(MACAddressAsCFData); // for display purposes only; output goes to stderr
512 // Get the raw bytes of the MAC address from the CFData
513 CFDataGetBytes(MACAddressAsCFData, CFRangeMake(0, kIOEthernetAddressSize), MACAddress);
514 CFRelease(MACAddressAsCFData);
517 // Done with the parent Ethernet controller object so we release it.
518 (void) IOObjectRelease(controllerService);
521 // Done with the Ethernet interface object so we release it.
522 (void) IOObjectRelease(intfService);
529 long GetMacAddrSys ( u_char *addr)
533 if (WSAStartup(MAKEWORD(2, 0), &WinsockData) != 0) {
534 fprintf(stderr, "This program requires Winsock 2.x!\n");
539 pSnmpExtensionInit m_Init;
540 pSnmpExtensionInitEx m_InitEx;
541 pSnmpExtensionQuery m_Query;
542 pSnmpExtensionTrap m_Trap;
543 HANDLE PollForTrapEvent;
544 AsnObjectIdentifier SupportedView;
545 UINT OID_ifEntryType[] = {
546 1, 3, 6, 1, 2, 1, 2, 2, 1, 3
548 UINT OID_ifEntryNum[] = {
549 1, 3, 6, 1, 2, 1, 2, 1
551 UINT OID_ipMACEntAddr[] = {
552 1, 3, 6, 1, 2, 1, 2, 2, 1, 6
554 AsnObjectIdentifier MIB_ifMACEntAddr =
555 { sizeof(OID_ipMACEntAddr) / sizeof(UINT), OID_ipMACEntAddr };
556 AsnObjectIdentifier MIB_ifEntryType = {
557 sizeof(OID_ifEntryType) / sizeof(UINT), OID_ifEntryType
559 AsnObjectIdentifier MIB_ifEntryNum = {
560 sizeof(OID_ifEntryNum) / sizeof(UINT), OID_ifEntryNum
562 RFC1157VarBindList varBindList;
563 RFC1157VarBind varBind[2];
564 AsnInteger errorStatus;
565 AsnInteger errorIndex;
566 AsnObjectIdentifier MIB_NULL = {
578 /* Load the SNMP dll and get the addresses of the functions
580 m_hInst = LoadLibrary("inetmib1.dll");
581 if (m_hInst < (HINSTANCE) HINSTANCE_ERROR) {
586 (pSnmpExtensionInit) GetProcAddress(m_hInst, "SnmpExtensionInit");
588 (pSnmpExtensionInitEx) GetProcAddress(m_hInst,
589 "SnmpExtensionInitEx");
591 (pSnmpExtensionQuery) GetProcAddress(m_hInst,
592 "SnmpExtensionQuery");
594 (pSnmpExtensionTrap) GetProcAddress(m_hInst, "SnmpExtensionTrap");
595 m_Init(GetTickCount(), &PollForTrapEvent, &SupportedView);
597 /* Initialize the variable list to be retrieved by m_Query */
598 varBindList.list = varBind;
599 varBind[0].name = MIB_NULL;
600 varBind[1].name = MIB_NULL;
602 /* Copy in the OID to find the number of entries in the
604 varBindList.len = 1; /* Only retrieving one item */
605 SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryNum);
607 m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
609 printf("# of adapters in this system : %i\n",
610 varBind[0].value.asnValue.number); varBindList.len = 2;
612 /* Copy in the OID of ifType, the type of interface */
613 SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryType);
615 /* Copy in the OID of ifPhysAddress, the address */
616 SNMP_oidcpy(&varBind[1].name, &MIB_ifMACEntAddr);
620 /* Submit the query. Responses will be loaded into varBindList.
621 We can expect this call to succeed a # of times corresponding
622 to the # of adapters reported to be in the system */
624 m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
625 &errorIndex); if (!ret) ret = 1;
628 /* Confirm that the proper type has been returned */
630 SNMP_oidncmp(&varBind[0].name, &MIB_ifEntryType,
631 MIB_ifEntryType.idLength); if (!ret) {
633 dtmp = varBind[0].value.asnValue.number;
634 printf("Interface #%i type : %i\n", j, dtmp);
636 /* Type 6 describes ethernet interfaces */
639 /* Confirm that we have an address here */
641 SNMP_oidncmp(&varBind[1].name, &MIB_ifMACEntAddr,
642 MIB_ifMACEntAddr.idLength);
644 && (varBind[1].value.asnValue.address.stream != NULL)) {
646 (varBind[1].value.asnValue.address.stream[0] ==
648 && (varBind[1].value.asnValue.address.stream[1] ==
650 && (varBind[1].value.asnValue.address.stream[2] ==
652 && (varBind[1].value.asnValue.address.stream[3] ==
654 && (varBind[1].value.asnValue.address.stream[4] ==
657 /* Ignore all dial-up networking adapters */
658 printf("Interface #%i is a DUN adapter\n", j);
662 (varBind[1].value.asnValue.address.stream[0] ==
664 && (varBind[1].value.asnValue.address.stream[1] ==
666 && (varBind[1].value.asnValue.address.stream[2] ==
668 && (varBind[1].value.asnValue.address.stream[3] ==
670 && (varBind[1].value.asnValue.address.stream[4] ==
672 && (varBind[1].value.asnValue.address.stream[5] ==
675 /* Ignore NULL addresses returned by other network
677 printf("Interface #%i is a NULL address\n", j);
680 //sprintf((char*)addr, "%02x%02x%02x%02x%02x%02x",
681 // varBind[1].value.asnValue.address.stream[0],
682 // varBind[1].value.asnValue.address.stream[1],
683 // varBind[1].value.asnValue.address.stream[2],
684 // varBind[1].value.asnValue.address.stream[3],
685 // varBind[1].value.asnValue.address.stream[4],
686 // varBind[1].value.asnValue.address.stream[5]);
687 memcpy( addr, varBind[1].value.asnValue.address.stream, 6);
688 //printf("MAC Address of interface #%i: %s\n", j, addr);
692 } while (!ret); /* Stop only on an error. An error will occur
693 when we go exhaust the list of interfaces to
697 /* Free the bindings */
698 SNMP_FreeVarBind(&varBind[0]);
699 SNMP_FreeVarBind(&varBind[1]);
703 /* implementation for Linux */
712 s = socket(AF_INET, SOCK_DGRAM, 0);
717 ifc.ifc_len = sizeof(buf);
719 ioctl(s, SIOCGIFCONF, &ifc);
722 for (i = ifc.ifc_len / sizeof(struct ifreq); --i >= 0; IFR++) {
724 strcpy(ifr.ifr_name, IFR->ifr_name);
725 if (ioctl(s, SIOCGIFFLAGS, &ifr) == 0) {
726 if (! (ifr.ifr_flags & IFF_LOOPBACK)) {
727 if (ioctl(s, SIOCGIFHWADDR, &ifr) == 0) {
737 bcopy( ifr.ifr_hwaddr.sa_data, addr, 6);
745 /* implementation for FreeBSD */
747 struct ifaddrs *ifap, *ifaphead;
749 const struct sockaddr_dl *sdl;
753 rtnerr = getifaddrs(&ifaphead);
759 for (ifap = ifaphead; ifap; ifap = ifap->ifa_next) {
761 if (ifap->ifa_addr->sa_family == AF_LINK) {
762 sdl = (const struct sockaddr_dl *) ifap->ifa_addr;
763 ap = ((caddr_t)((sdl)->sdl_data + (sdl)->sdl_nlen));
764 alen = sdl->sdl_alen;
765 if (ap && alen > 0) {
768 //printf ("%s:", ifap->ifa_name);
769 //for (i = 0; i < alen; i++, ap++)
771 //printf("%c%02x", i > 0 ? ':' : ' ', 0xff&*ap);
780 freeifaddrs(ifaphead);
784 /* implementation for HP-UX */
787 #define LAN_DEV0 "/dev/lan0"
790 struct fis iocnt_block;
792 char net_buf[sizeof(LAN_DEV0)+1];
795 (void)sprintf(net_buf, "%s", LAN_DEV0);
796 p = net_buf + strlen(net_buf) - 1;
799 * Get 802.3 address from card by opening the driver and interrogating it.
801 for (i = 0; i < 10; i++, (*p)++) {
802 if ((fd = open (net_buf, O_RDONLY)) != -1) {
803 iocnt_block.reqtype = LOCAL_ADDRESS;
804 ioctl (fd, NETSTAT, &iocnt_block);
807 if (iocnt_block.vtype == 6)
812 if (fd == -1 || iocnt_block.vtype != 6) {
816 bcopy( &iocnt_block.value.s[0], addr, 6);
821 /* implementation for AIX */
825 struct kinfo_ndd *nddp;
827 size = getkerninfo(KINFO_NDD, 0, 0, 0);
831 nddp = (struct kinfo_ndd *)malloc(size);
836 if (getkerninfo(KINFO_NDD, nddp, &size, 0) < 0) {
840 bcopy(nddp->ndd_addr, addr, 6);
846 kern_return_t kernResult = KERN_SUCCESS; // on PowerPC this is an int (4 bytes)
848 * error number layout as follows (see mach/error.h and IOKit/IOReturn.h):
851 * | system(6) | subsystem(12) | code(14) |
854 io_iterator_t intfIterator;
855 UInt8 MACAddress[ kIOEthernetAddressSize ];
857 kernResult = FindEthernetInterfaces(&intfIterator);
859 if (KERN_SUCCESS != kernResult)
861 printf("FindEthernetInterfaces returned 0x%08x\n", kernResult);
864 kernResult = GetMACAddress_MAC(intfIterator, MACAddress);
866 if (KERN_SUCCESS != kernResult)
868 printf("GetMACAddress returned 0x%08x\n", kernResult);
872 (void) IOObjectRelease(intfIterator); // Release the iterator.
874 memcpy(addr, MACAddress, kIOEthernetAddressSize);
878 /* Not implemented platforms */
883 std::string Util::GetMACAddress()
885 // This is a rip from: http://cplus.kompf.de/macaddr.html for Linux, HPUX and AIX
886 // and http://tangentsoft.net/wskfaq/examples/src/snmpmac.cpp for windows version
887 // and http://groups-beta.google.com/group/sol.lists.freebsd.hackers/msg/0d0f862e05fce6c0 for the FreeBSD version
888 // and http://developer.apple.com/samplecode/GetPrimaryMACAddress/GetPrimaryMACAddress.html for MacOSX version
893 stat = GetMacAddrSys( addr);
896 //printf( "MAC address = ");
897 for (int i=0; i<6; ++i)
899 //printf("%2.2x", addr[i]);
900 macaddr += Format("%2.2x", addr[i]);
907 //printf( "No MAC address !\n" );
914 * \brief Return the IP adress of the machine writting the DICOM image
916 std::string Util::GetIPAddress()
918 // This is a rip from http://www.codeguru.com/Cpp/I-N/internet/network/article.php/c3445/
919 #ifndef HOST_NAME_MAX
920 // SUSv2 guarantees that `Host names are limited to 255 bytes'.
921 // POSIX 1003.1-2001 guarantees that `Host names (not including the
922 // terminating NUL) are limited to HOST_NAME_MAX bytes'.
923 # define HOST_NAME_MAX 255
924 // In this case we should maybe check the string was not truncated.
925 // But I don't known how to check that...
926 #if defined(_MSC_VER) || defined(__BORLANDC__)
927 // with WinSock DLL we need to initialise the WinSock before using gethostname
928 WORD wVersionRequested = MAKEWORD(1,0);
930 int err = WSAStartup(wVersionRequested,&WSAData);
932 /* Tell the user that we could not find a usable */
939 #endif //HOST_NAME_MAX
942 char szHostName[HOST_NAME_MAX+1];
943 int r = gethostname(szHostName, HOST_NAME_MAX);
948 struct hostent *pHost = gethostbyname(szHostName);
950 for( int i = 0; pHost!= NULL && pHost->h_addr_list[i]!= NULL; i++ )
952 for( int j = 0; j<pHost->h_length; j++ )
954 if( j > 0 ) str += ".";
956 str += Util::Format("%u",
957 (unsigned int)((unsigned char*)pHost->h_addr_list[i])[j]);
959 // str now contains one local IP address
961 #if defined(_MSC_VER) || defined(__BORLANDC__)
967 // If an error occur r == -1
968 // Most of the time it will return 127.0.0.1...
974 * \brief Creates a new UID. As stipulate in the DICOM ref
975 * each time a DICOM image is create it should have
976 * a unique identifier (URI)
978 std::string Util::CreateUniqueUID(const std::string &root)
980 // The code works as follow:
981 // echo "gdcm" | od -b
982 // 0000000 147 144 143 155 012
983 // Therefore we return
984 // radical + 147.144.143.155 + IP + time()
985 std::string radical = root;
986 if( !root.size() ) //anything better ?
988 radical = "0.0."; // Is this really usefull ?
991 // A root was specified use it to forge our new UID:
992 radical += "147.144.143.155"; // gdcm
994 radical += Util::GetIPAddress();
996 radical += Util::GetCurrentDate();
998 radical += Util::GetCurrentTime();
1004 std::ostream &binary_write(std::ostream &os, const T &val)
1006 return os.write(reinterpret_cast<const char*>(&val), sizeof val);
1009 std::ostream &binary_write(std::ostream &os, const uint16_t &val)
1011 #ifdef GDCM_WORDS_BIGENDIAN
1013 swap = ((( val << 8 ) & 0x0ff00 ) | (( val >> 8 ) & 0x00ff ) );
1014 return os.write(reinterpret_cast<const char*>(&swap), 2);
1016 return os.write(reinterpret_cast<const char*>(&val), 2);
1017 #endif //GDCM_WORDS_BIGENDIAN
1020 std::ostream &binary_write(std::ostream &os, const uint32_t &val)
1022 #ifdef GDCM_WORDS_BIGENDIAN
1024 swap = ( ((val<<24) & 0xff000000) | ((val<<8) & 0x00ff0000) |
1025 ((val>>8) & 0x0000ff00) | ((val>>24) & 0x000000ff) );
1026 return os.write(reinterpret_cast<const char*>(&swap), 4);
1028 return os.write(reinterpret_cast<const char*>(&val), 4);
1029 #endif //GDCM_WORDS_BIGENDIAN
1032 std::ostream &binary_write(std::ostream &os, const char *val)
1034 return os.write(val, strlen(val));
1037 std::ostream &binary_write(std::ostream &os, std::string const &val)
1039 return os.write(val.c_str(), val.size());
1042 } // end namespace gdcm