1 /*=========================================================================
4 Module: $RCSfile: gdcmUtil.cxx,v $
6 Date: $Date: 2005/01/09 00:13:26 $
7 Version: $Revision: 1.86 $
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
45 * \brief Provide a better 'c++' approach for sprintf
46 * For example c code is:
47 * sprintf(trash, "%04x|%04x", group , element);
50 * std::ostringstream buf;
51 * buf << std::right << std::setw(4) << std::setfill('0') << std::hex
52 * << group << "|" << std::right << std::setw(4) << std::setfill('0')
53 * << std::hex << element;
57 std::string Util::Format(const char *format, ...)
61 va_start(args, format);
62 vsprintf(buffer, format, args); //might be a security flaw
63 va_end(args); // Each invocation of va_start should be matched
64 // by a corresponding invocation of va_end
65 // args is then 'undefined'
72 * \brief Because not available in C++ (?)
74 void Util::Tokenize (const std::string &str,
75 std::vector<std::string> &tokens,
76 const std::string& delimiters)
78 std::string::size_type lastPos = str.find_first_not_of(delimiters,0);
79 std::string::size_type pos = str.find_first_of (delimiters,lastPos);
80 while (std::string::npos != pos || std::string::npos != lastPos)
82 tokens.push_back(str.substr(lastPos, pos - lastPos));
83 lastPos = str.find_first_not_of(delimiters, pos);
84 pos = str.find_first_of (delimiters, lastPos);
90 * \brief Because not available in C++ (?)
91 * Counts the number of occurences of a substring within a string
94 int Util::CountSubstring (const std::string &str,
95 const std::string &subStr)
97 int count = 0; // counts how many times it appears
98 std::string::size_type x = 0; // The index position in the string
102 x = str.find(subStr,x); // Find the substring
103 if (x != std::string::npos) // If present
105 count++; // increase the count
106 x += subStr.length(); // Skip this word
109 while (x != std::string::npos); // Carry on until not present
116 * \brief Weed out a string from the non-printable characters (in order
117 * to avoid corrupting the terminal of invocation when printing)
118 * @param s string to remove non printable characters from
120 std::string Util::CreateCleanString(std::string const &s)
124 for(unsigned int i=0; i<str.size(); i++)
126 if(!isprint((unsigned char)str[i]))
134 if(!isprint((unsigned char)s[str.size()-1]))
136 if(s[str.size()-1] == 0)
138 str[str.size()-1] = ' ';
148 * \brief Add a SEPARATOR to the end of the name is necessary
149 * @param pathname file/directory name to normalize
151 std::string Util::NormalizePath(std::string const &pathname)
153 const char SEPARATOR_X = '/';
154 const char SEPARATOR_WIN = '\\';
155 const std::string SEPARATOR = "/";
156 std::string name = pathname;
157 int size = name.size();
159 if( name[size-1] != SEPARATOR_X && name[size-1] != SEPARATOR_WIN )
168 * \brief Get the (directory) path from a full path file name
169 * @param fullName file/directory name to extract Path from
171 std::string Util::GetPath(std::string const &fullName)
173 std::string res = fullName;
174 int pos1 = res.rfind("/");
175 int pos2 = res.rfind("\\");
190 * \brief Get the (last) name of a full path file name
191 * @param fullName file/directory name to extract end name from
193 std::string Util::GetName(std::string const &fullName)
195 std::string filename = fullName;
197 std::string::size_type slash_pos = filename.rfind("/");
198 std::string::size_type backslash_pos = filename.rfind("\\");
199 slash_pos = slash_pos > backslash_pos ? slash_pos : backslash_pos;
200 if(slash_pos != std::string::npos)
202 return filename.substr(slash_pos + 1);
212 * \brief Get the current date of the system in a dicom string
214 std::string Util::GetCurrentDate()
219 strftime(tmp,512,"%Y%m%d", localtime(&tloc) );
225 * \brief Get the current time of the system in a dicom string
227 std::string Util::GetCurrentTime()
232 strftime(tmp,512,"%H%M%S", localtime(&tloc) );
237 * \brief Create a /DICOM/ string:
238 * It should a of even length (no odd length ever)
239 * It can contain as many (if you are reading this from your
240 * editor the following character is is backslash followed by zero
241 * that needed to be escaped with an extra backslash for doxygen) \\0
244 std::string Util::DicomString(const char *s, size_t l)
246 std::string r(s, s+l);
247 gdcmAssertMacro( !(r.size() % 2) ); // == basically 'l' is even
253 * \brief Create a /DICOM/ string:
254 * It should a of even lenght (no odd length ever)
255 * It can contain as many (if you are reading this from your
256 * editor the following character is is backslash followed by zero
257 * that needed to be escaped with an extra backslash for doxygen) \\0
259 * This function is similar to DicomString(const char*),
260 * except it doesn't take a lenght.
261 * It only pad with a null character if length is odd
263 std::string Util::DicomString(const char *s)
265 size_t l = strlen(s);
270 std::string r(s, s+l);
271 gdcmAssertMacro( !(r.size() % 2) );
277 * \brief Safely compare two Dicom String:
278 * - Both string should be of even lenght
279 * - We allow padding of even lenght string by either a null
280 * character of a space
282 bool Util::DicomStringEqual(const std::string &s1, const char *s2)
284 // s2 is the string from the DICOM reference: 'MONOCHROME1'
285 std::string s1_even = s1; //Never change input parameter
286 std::string s2_even = DicomString( s2 );
287 if( s1_even[s1_even.size()-1] == ' ')
289 s1_even[s1_even.size()-1] = '\0'; //replace space character by null
291 return s1_even == s2_even;
298 * \brief tells us if the processor we are working with is BigEndian or not
300 bool Util::IsCurrentProcessorBigEndian()
303 uint8_t bigEndianRepr[4] = { 0x00, 0x00, 0x00, 0x01 };
304 int res = memcmp(reinterpret_cast<const void*>(&intVal),
305 reinterpret_cast<const void*>(bigEndianRepr), 4);
320 typedef BOOL(WINAPI * pSnmpExtensionInit) (
321 IN DWORD dwTimeZeroReference,
322 OUT HANDLE * hPollForTrapEvent,
323 OUT AsnObjectIdentifier * supportedView);
325 typedef BOOL(WINAPI * pSnmpExtensionTrap) (
326 OUT AsnObjectIdentifier * enterprise,
327 OUT AsnInteger * genericTrap,
328 OUT AsnInteger * specificTrap,
329 OUT AsnTimeticks * timeStamp,
330 OUT RFC1157VarBindList * variableBindings);
332 typedef BOOL(WINAPI * pSnmpExtensionQuery) (
334 IN OUT RFC1157VarBindList * variableBindings,
335 OUT AsnInteger * errorStatus,
336 OUT AsnInteger * errorIndex);
338 typedef BOOL(WINAPI * pSnmpExtensionInitEx) (
339 OUT AsnObjectIdentifier * supportedView);
341 #include <strings.h> //for bzero on unix
345 #include <sys/ioctl.h>
346 #include <sys/types.h>
347 #include <sys/socket.h>
348 #include <netinet/in.h>
349 #include <linux/if.h>
353 #include <sys/types.h>
354 #include <sys/socket.h>
356 #include <net/if_dl.h>
364 #include <sys/ndd_var.h>
365 #include <sys/kinfo.h>
369 #include <CoreFoundation/CoreFoundation.h>
370 #include <IOKit/IOKitLib.h>
371 #include <IOKit/network/IOEthernetInterface.h>
372 #include <IOKit/network/IONetworkInterface.h>
373 #include <IOKit/network/IOEthernetController.h>
375 //static kern_return_t FindEthernetInterfaces(io_iterator_t *matchingServices);
376 //static kern_return_t GetMACAddress(io_iterator_t intfIterator, UInt8 *MACAddress);
378 // Returns an iterator containing the primary (built-in) Ethernet interface. The caller is responsible for
379 // releasing the iterator after the caller is done with it.
380 static kern_return_t FindEthernetInterfaces(io_iterator_t *matchingServices)
382 kern_return_t kernResult;
383 mach_port_t masterPort;
384 CFMutableDictionaryRef matchingDict;
385 CFMutableDictionaryRef propertyMatchDict;
387 // Retrieve the Mach port used to initiate communication with I/O Kit
388 kernResult = IOMasterPort(MACH_PORT_NULL, &masterPort);
389 if (KERN_SUCCESS != kernResult)
391 printf("IOMasterPort returned %d\n", kernResult);
395 // Ethernet interfaces are instances of class kIOEthernetInterfaceClass.
396 // IOServiceMatching is a convenience function to create a dictionary with the key kIOProviderClassKey and
397 // the specified value.
398 matchingDict = IOServiceMatching(kIOEthernetInterfaceClass);
400 // Note that another option here would be:
401 // matchingDict = IOBSDMatching("en0");
403 if (NULL == matchingDict)
405 printf("IOServiceMatching returned a NULL dictionary.\n");
408 // Each IONetworkInterface object has a Boolean property with the key kIOPrimaryInterface. Only the
409 // primary (built-in) interface has this property set to TRUE.
411 // IOServiceGetMatchingServices uses the default matching criteria defined by IOService. This considers
412 // only the following properties plus any family-specific matching in this order of precedence
413 // (see IOService::passiveMatch):
415 // kIOProviderClassKey (IOServiceMatching)
416 // kIONameMatchKey (IOServiceNameMatching)
417 // kIOPropertyMatchKey
419 // kIOMatchedServiceCountKey
420 // family-specific matching
421 // kIOBSDNameKey (IOBSDNameMatching)
422 // kIOLocationMatchKey
424 // The IONetworkingFamily does not define any family-specific matching. This means that in
425 // order to have IOServiceGetMatchingServices consider the kIOPrimaryInterface property, we must
426 // add that property to a separate dictionary and then add that to our matching dictionary
427 // specifying kIOPropertyMatchKey.
429 propertyMatchDict = CFDictionaryCreateMutable( kCFAllocatorDefault, 0,
430 &kCFTypeDictionaryKeyCallBacks,
431 &kCFTypeDictionaryValueCallBacks);
433 if (NULL == propertyMatchDict)
435 printf("CFDictionaryCreateMutable returned a NULL dictionary.\n");
438 // Set the value in the dictionary of the property with the given key, or add the key
439 // to the dictionary if it doesn't exist. This call retains the value object passed in.
440 CFDictionarySetValue(propertyMatchDict, CFSTR(kIOPrimaryInterface), kCFBooleanTrue);
442 // Now add the dictionary containing the matching value for kIOPrimaryInterface to our main
443 // matching dictionary. This call will retain propertyMatchDict, so we can release our reference
444 // on propertyMatchDict after adding it to matchingDict.
445 CFDictionarySetValue(matchingDict, CFSTR(kIOPropertyMatchKey), propertyMatchDict);
446 CFRelease(propertyMatchDict);
450 // IOServiceGetMatchingServices retains the returned iterator, so release the iterator when we're done with it.
451 // IOServiceGetMatchingServices also consumes a reference on the matching dictionary so we don't need to release
452 // the dictionary explicitly.
453 kernResult = IOServiceGetMatchingServices(masterPort, matchingDict, matchingServices);
454 if (KERN_SUCCESS != kernResult)
456 printf("IOServiceGetMatchingServices returned %d\n", kernResult);
462 // Given an iterator across a set of Ethernet interfaces, return the MAC address of the last one.
463 // If no interfaces are found the MAC address is set to an empty string.
464 // In this sample the iterator should contain just the primary interface.
465 static kern_return_t GetMACAddress_MAC(io_iterator_t intfIterator, UInt8 *MACAddress)
467 io_object_t intfService;
468 io_object_t controllerService;
469 kern_return_t kernResult = KERN_FAILURE;
471 // Initialize the returned address
472 bzero(MACAddress, kIOEthernetAddressSize);
474 // IOIteratorNext retains the returned object, so release it when we're done with it.
475 while ( (intfService = IOIteratorNext(intfIterator)))
477 CFTypeRef MACAddressAsCFData;
479 // IONetworkControllers can't be found directly by the IOServiceGetMatchingServices call,
480 // since they are hardware nubs and do not participate in driver matching. In other words,
481 // registerService() is never called on them. So we've found the IONetworkInterface and will
482 // get its parent controller by asking for it specifically.
484 // IORegistryEntryGetParentEntry retains the returned object, so release it when we're done with it.
485 kernResult = IORegistryEntryGetParentEntry( intfService,
487 &controllerService );
489 if (KERN_SUCCESS != kernResult)
491 printf("IORegistryEntryGetParentEntry returned 0x%08x\n", kernResult);
494 // Retrieve the MAC address property from the I/O Registry in the form of a CFData
495 MACAddressAsCFData = IORegistryEntryCreateCFProperty( controllerService,
496 CFSTR(kIOMACAddress),
499 if (MACAddressAsCFData)
501 CFShow(MACAddressAsCFData); // for display purposes only; output goes to stderr
503 // Get the raw bytes of the MAC address from the CFData
504 CFDataGetBytes(MACAddressAsCFData, CFRangeMake(0, kIOEthernetAddressSize), MACAddress);
505 CFRelease(MACAddressAsCFData);
508 // Done with the parent Ethernet controller object so we release it.
509 (void) IOObjectRelease(controllerService);
512 // Done with the Ethernet interface object so we release it.
513 (void) IOObjectRelease(intfService);
520 long GetMacAddrSys ( u_char *addr)
524 if (WSAStartup(MAKEWORD(2, 0), &WinsockData) != 0) {
525 fprintf(stderr, "This program requires Winsock 2.x!\n");
530 pSnmpExtensionInit m_Init;
531 pSnmpExtensionInitEx m_InitEx;
532 pSnmpExtensionQuery m_Query;
533 pSnmpExtensionTrap m_Trap;
534 HANDLE PollForTrapEvent;
535 AsnObjectIdentifier SupportedView;
536 UINT OID_ifEntryType[] = {
537 1, 3, 6, 1, 2, 1, 2, 2, 1, 3
539 UINT OID_ifEntryNum[] = {
540 1, 3, 6, 1, 2, 1, 2, 1
542 UINT OID_ipMACEntAddr[] = {
543 1, 3, 6, 1, 2, 1, 2, 2, 1, 6
545 AsnObjectIdentifier MIB_ifMACEntAddr =
546 { sizeof(OID_ipMACEntAddr) / sizeof(UINT), OID_ipMACEntAddr };
547 AsnObjectIdentifier MIB_ifEntryType = {
548 sizeof(OID_ifEntryType) / sizeof(UINT), OID_ifEntryType
550 AsnObjectIdentifier MIB_ifEntryNum = {
551 sizeof(OID_ifEntryNum) / sizeof(UINT), OID_ifEntryNum
553 RFC1157VarBindList varBindList;
554 RFC1157VarBind varBind[2];
555 AsnInteger errorStatus;
556 AsnInteger errorIndex;
557 AsnObjectIdentifier MIB_NULL = {
569 /* Load the SNMP dll and get the addresses of the functions
571 m_hInst = LoadLibrary("inetmib1.dll");
572 if (m_hInst < (HINSTANCE) HINSTANCE_ERROR) {
577 (pSnmpExtensionInit) GetProcAddress(m_hInst, "SnmpExtensionInit");
579 (pSnmpExtensionInitEx) GetProcAddress(m_hInst,
580 "SnmpExtensionInitEx");
582 (pSnmpExtensionQuery) GetProcAddress(m_hInst,
583 "SnmpExtensionQuery");
585 (pSnmpExtensionTrap) GetProcAddress(m_hInst, "SnmpExtensionTrap");
586 m_Init(GetTickCount(), &PollForTrapEvent, &SupportedView);
588 /* Initialize the variable list to be retrieved by m_Query */
589 varBindList.list = varBind;
590 varBind[0].name = MIB_NULL;
591 varBind[1].name = MIB_NULL;
593 /* Copy in the OID to find the number of entries in the
595 varBindList.len = 1; /* Only retrieving one item */
596 SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryNum);
598 m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
600 printf("# of adapters in this system : %i\n",
601 varBind[0].value.asnValue.number); varBindList.len = 2;
603 /* Copy in the OID of ifType, the type of interface */
604 SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryType);
606 /* Copy in the OID of ifPhysAddress, the address */
607 SNMP_oidcpy(&varBind[1].name, &MIB_ifMACEntAddr);
611 /* Submit the query. Responses will be loaded into varBindList.
612 We can expect this call to succeed a # of times corresponding
613 to the # of adapters reported to be in the system */
615 m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
616 &errorIndex); if (!ret) ret = 1;
619 /* Confirm that the proper type has been returned */
621 SNMP_oidncmp(&varBind[0].name, &MIB_ifEntryType,
622 MIB_ifEntryType.idLength); if (!ret) {
624 dtmp = varBind[0].value.asnValue.number;
625 printf("Interface #%i type : %i\n", j, dtmp);
627 /* Type 6 describes ethernet interfaces */
630 /* Confirm that we have an address here */
632 SNMP_oidncmp(&varBind[1].name, &MIB_ifMACEntAddr,
633 MIB_ifMACEntAddr.idLength);
635 && (varBind[1].value.asnValue.address.stream != NULL)) {
637 (varBind[1].value.asnValue.address.stream[0] ==
639 && (varBind[1].value.asnValue.address.stream[1] ==
641 && (varBind[1].value.asnValue.address.stream[2] ==
643 && (varBind[1].value.asnValue.address.stream[3] ==
645 && (varBind[1].value.asnValue.address.stream[4] ==
648 /* Ignore all dial-up networking adapters */
649 printf("Interface #%i is a DUN adapter\n", j);
653 (varBind[1].value.asnValue.address.stream[0] ==
655 && (varBind[1].value.asnValue.address.stream[1] ==
657 && (varBind[1].value.asnValue.address.stream[2] ==
659 && (varBind[1].value.asnValue.address.stream[3] ==
661 && (varBind[1].value.asnValue.address.stream[4] ==
663 && (varBind[1].value.asnValue.address.stream[5] ==
666 /* Ignore NULL addresses returned by other network
668 printf("Interface #%i is a NULL address\n", j);
671 //sprintf((char*)addr, "%02x%02x%02x%02x%02x%02x",
672 // varBind[1].value.asnValue.address.stream[0],
673 // varBind[1].value.asnValue.address.stream[1],
674 // varBind[1].value.asnValue.address.stream[2],
675 // varBind[1].value.asnValue.address.stream[3],
676 // varBind[1].value.asnValue.address.stream[4],
677 // varBind[1].value.asnValue.address.stream[5]);
678 memcpy( addr, varBind[1].value.asnValue.address.stream, 6);
679 //printf("MAC Address of interface #%i: %s\n", j, addr);
683 } while (!ret); /* Stop only on an error. An error will occur
684 when we go exhaust the list of interfaces to
688 /* Free the bindings */
689 SNMP_FreeVarBind(&varBind[0]);
690 SNMP_FreeVarBind(&varBind[1]);
694 /* implementation for Linux */
703 s = socket(AF_INET, SOCK_DGRAM, 0);
708 ifc.ifc_len = sizeof(buf);
710 ioctl(s, SIOCGIFCONF, &ifc);
713 for (i = ifc.ifc_len / sizeof(struct ifreq); --i >= 0; IFR++) {
715 strcpy(ifr.ifr_name, IFR->ifr_name);
716 if (ioctl(s, SIOCGIFFLAGS, &ifr) == 0) {
717 if (! (ifr.ifr_flags & IFF_LOOPBACK)) {
718 if (ioctl(s, SIOCGIFHWADDR, &ifr) == 0) {
728 bcopy( ifr.ifr_hwaddr.sa_data, addr, 6);
736 /* implementation for FreeBSD */
738 struct ifaddrs *ifap, *ifaphead;
740 const struct sockaddr_dl *sdl;
744 rtnerr = getifaddrs(&ifaphead);
750 for (ifap = ifaphead; ifap; ifap = ifap->ifa_next) {
752 if (ifap->ifa_addr->sa_family == AF_LINK) {
753 sdl = (const struct sockaddr_dl *) ifap->ifa_addr;
754 ap = ((caddr_t)((sdl)->sdl_data + (sdl)->sdl_nlen));
755 alen = sdl->sdl_alen;
756 if (ap && alen > 0) {
759 //printf ("%s:", ifap->ifa_name);
760 //for (i = 0; i < alen; i++, ap++)
762 //printf("%c%02x", i > 0 ? ':' : ' ', 0xff&*ap);
771 freeifaddrs(ifaphead);
775 /* implementation for HP-UX */
778 #define LAN_DEV0 "/dev/lan0"
781 struct fis iocnt_block;
783 char net_buf[sizeof(LAN_DEV0)+1];
786 (void)sprintf(net_buf, "%s", LAN_DEV0);
787 p = net_buf + strlen(net_buf) - 1;
790 * Get 802.3 address from card by opening the driver and interrogating it.
792 for (i = 0; i < 10; i++, (*p)++) {
793 if ((fd = open (net_buf, O_RDONLY)) != -1) {
794 iocnt_block.reqtype = LOCAL_ADDRESS;
795 ioctl (fd, NETSTAT, &iocnt_block);
798 if (iocnt_block.vtype == 6)
803 if (fd == -1 || iocnt_block.vtype != 6) {
807 bcopy( &iocnt_block.value.s[0], addr, 6);
812 /* implementation for AIX */
816 struct kinfo_ndd *nddp;
818 size = getkerninfo(KINFO_NDD, 0, 0, 0);
822 nddp = (struct kinfo_ndd *)malloc(size);
827 if (getkerninfo(KINFO_NDD, nddp, &size, 0) < 0) {
831 bcopy(nddp->ndd_addr, addr, 6);
837 kern_return_t kernResult = KERN_SUCCESS; // on PowerPC this is an int (4 bytes)
839 * error number layout as follows (see mach/error.h and IOKit/IOReturn.h):
842 * | system(6) | subsystem(12) | code(14) |
845 io_iterator_t intfIterator;
846 UInt8 MACAddress[ kIOEthernetAddressSize ];
848 kernResult = FindEthernetInterfaces(&intfIterator);
850 if (KERN_SUCCESS != kernResult)
852 printf("FindEthernetInterfaces returned 0x%08x\n", kernResult);
855 kernResult = GetMACAddress_MAC(intfIterator, MACAddress);
857 if (KERN_SUCCESS != kernResult)
859 printf("GetMACAddress returned 0x%08x\n", kernResult);
863 (void) IOObjectRelease(intfIterator); // Release the iterator.
865 memcpy(addr, MACAddress, kIOEthernetAddressSize);
869 /* Not implemented platforms */
874 std::string Util::GetMACAddress()
876 // This is a rip from: http://cplus.kompf.de/macaddr.html for Linux, HPUX and AIX
877 // and http://tangentsoft.net/wskfaq/examples/src/snmpmac.cpp for windows version
878 // and http://groups-beta.google.com/group/sol.lists.freebsd.hackers/msg/0d0f862e05fce6c0 for the FreeBSD version
879 // and http://developer.apple.com/samplecode/GetPrimaryMACAddress/GetPrimaryMACAddress.html for MacOSX version
884 stat = GetMacAddrSys( addr);
887 //printf( "MAC address = ");
888 for (int i=0; i<6; ++i)
890 //printf("%2.2x", addr[i]);
891 macaddr += Format("%2.2x", addr[i]);
898 //printf( "No MAC address !\n" );
905 * \brief Return the IP adress of the machine writting the DICOM image
907 std::string Util::GetIPAddress()
909 // This is a rip from http://www.codeguru.com/Cpp/I-N/internet/network/article.php/c3445/
910 #ifndef HOST_NAME_MAX
911 // SUSv2 guarantees that `Host names are limited to 255 bytes'.
912 // POSIX 1003.1-2001 guarantees that `Host names (not including the
913 // terminating NUL) are limited to HOST_NAME_MAX bytes'.
914 # define HOST_NAME_MAX 255
915 // In this case we should maybe check the string was not truncated.
916 // But I don't known how to check that...
917 #if defined(_MSC_VER) || defined(__BORLANDC__)
918 // with WinSock DLL we need to initialise the WinSock before using gethostname
919 WORD wVersionRequested = MAKEWORD(1,0);
921 int err = WSAStartup(wVersionRequested,&WSAData);
923 /* Tell the user that we could not find a usable */
930 #endif //HOST_NAME_MAX
933 char szHostName[HOST_NAME_MAX+1];
934 int r = gethostname(szHostName, HOST_NAME_MAX);
939 struct hostent *pHost = gethostbyname(szHostName);
941 for( int i = 0; pHost!= NULL && pHost->h_addr_list[i]!= NULL; i++ )
943 for( int j = 0; j<pHost->h_length; j++ )
945 if( j > 0 ) str += ".";
947 str += Util::Format("%u",
948 (unsigned int)((unsigned char*)pHost->h_addr_list[i])[j]);
950 // str now contains one local IP address
952 #if defined(_MSC_VER) || defined(__BORLANDC__)
958 // If an error occur r == -1
959 // Most of the time it will return 127.0.0.1...
965 * \brief Creates a new UID. As stipulate in the DICOM ref
966 * each time a DICOM image is create it should have
967 * a unique identifier (URI)
969 std::string Util::CreateUniqueUID(const std::string &root)
971 // The code works as follow:
972 // echo "gdcm" | od -b
973 // 0000000 147 144 143 155 012
974 // Therefore we return
975 // radical + 147.144.143.155 + IP + time()
976 std::string radical = root;
977 if( !root.size() ) //anything better ?
979 radical = "0.0."; // Is this really usefull ?
982 // A root was specified use it to forge our new UID:
983 radical += "147.144.143.155"; // gdcm
985 radical += Util::GetIPAddress();
987 radical += Util::GetCurrentDate();
989 radical += Util::GetCurrentTime();
995 std::ostream &binary_write(std::ostream &os, const T &val)
997 return os.write(reinterpret_cast<const char*>(&val), sizeof val);
1000 std::ostream &binary_write(std::ostream &os, const uint16_t &val)
1002 #ifdef GDCM_WORDS_BIGENDIAN
1004 swap = ((( val << 8 ) & 0x0ff00 ) | (( val >> 8 ) & 0x00ff ) );
1005 return os.write(reinterpret_cast<const char*>(&swap), 2);
1007 return os.write(reinterpret_cast<const char*>(&val), 2);
1008 #endif //GDCM_WORDS_BIGENDIAN
1011 std::ostream &binary_write(std::ostream &os, const uint32_t &val)
1013 #ifdef GDCM_WORDS_BIGENDIAN
1015 swap = ( ((val<<24) & 0xff000000) | ((val<<8) & 0x00ff0000) |
1016 ((val>>8) & 0x0000ff00) | ((val>>24) & 0x000000ff) );
1017 return os.write(reinterpret_cast<const char*>(&swap), 4);
1019 return os.write(reinterpret_cast<const char*>(&val), 4);
1020 #endif //GDCM_WORDS_BIGENDIAN
1023 std::ostream &binary_write(std::ostream &os, const char *val)
1025 return os.write(val, strlen(val));
1028 std::ostream &binary_write(std::ostream &os, std::string const &val)
1030 return os.write(val.c_str(), val.size());
1033 } // end namespace gdcm