X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=src%2FgdcmUtil.cxx;h=6655dc5f7585d200a419a6ce76da986c414429a1;hb=e7768bbebdc9a5972e396d71a3e848f5674ee378;hp=5ff44cde93200bd6b18f3ea9848c75f5c1338f2f;hpb=cfd7023dd0efe6d0cf17cdc1b31bbf17ac8a9ade;p=gdcm.git diff --git a/src/gdcmUtil.cxx b/src/gdcmUtil.cxx index 5ff44cde..6655dc5f 100644 --- a/src/gdcmUtil.cxx +++ b/src/gdcmUtil.cxx @@ -3,8 +3,8 @@ Program: gdcm Module: $RCSfile: gdcmUtil.cxx,v $ Language: C++ - Date: $Date: 2005/01/17 16:41:18 $ - Version: $Revision: 1.103 $ + Date: $Date: 2007/10/17 08:57:55 $ + Version: $Revision: 1.189 $ Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de l'Image). All rights reserved. See Doc/License.txt or @@ -18,25 +18,36 @@ #include "gdcmUtil.h" #include "gdcmDebug.h" + #include +#include // for va_list // For GetCurrentDate, GetCurrentTime #include #include #include +#if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__) +#include +#else +#include +#endif + #include //only included in implementation file #include //only included in implementation file -#if defined(_MSC_VER) - #include // for gethostname & gethostbyname +#if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__) + #include // for gethostname and gethostbyname and GetTickCount... +// I haven't find a way to determine wether we need to under GetCurrentTime or not... +// I think the best solution would simply to get rid of this problematic function +// and use a 'less' common name... +#if !defined(__BORLANDC__) || (__BORLANDC__ >= 0x0560) #undef GetCurrentTime +#endif #else -#ifndef __BORLANDC__ #include // for gethostname #include // for gethostbyname #endif -#endif // For GetMACAddress #ifdef _WIN32 @@ -49,14 +60,6 @@ #include #endif -// How do I do that in CMake ? -#ifdef __APPLE__ - #define HAVE_SA_LEN - #define CMAKE_HAVE_NET_IF_DL_H - #define CMAKE_HAVE_NETINET_IN_H - #define CMAKE_HAVE_NET_IF_H -#endif //APPLE - #ifdef CMAKE_HAVE_SYS_IOCTL_H #include // For SIOCGIFCONF on Linux #endif @@ -75,19 +78,48 @@ #ifdef CMAKE_HAVE_NET_IF_DL_H #include #endif -#ifdef __sun - //#if defined(CMAKE_HAVE_NET_IF_ARP_H) && defined(__sun) - // This is absolutely necesseray on SunOS +#if defined(CMAKE_HAVE_NET_IF_ARP_H) && defined(__sun) + // This is absolutely necessary on SunOS #include #endif -namespace gdcm +// For GetCurrentThreadID() +#ifdef __linux__ + #include + #include +#endif +#ifdef __sun + #include +#endif + +namespace GDCM_NAME_SPACE { +//------------------------------------------------------------------------- +const std::string Util::GDCM_UID = "1.2.826.0.1.3680043.2.1143"; +std::string Util::RootUID = GDCM_UID; +/* + * File Meta Information Version (0002,0001) shall contain a two byte OB + * value consisting of a 0x00 byte, followed by 0x01 byte, and not the + * value 0x0001 encoded as a little endian 16 bit short value, + * which would be the other way around... + */ + +#if defined(GDCM_WORDS_BIGENDIAN) || defined(GDCM_FORCE_BIGENDIAN_EMULATION) + const uint16_t Util::FMIV = 0x0001; +#else + const uint16_t Util::FMIV = 0x0100; +#endif + uint8_t *Util::FileMetaInformationVersion = (uint8_t *)&FMIV; + + std::string Util::GDCM_MAC_ADRESS = GetMACAddress(); + +//------------------------------------------------------------------------- +// Public /** - * \ingroup Globals * \brief Provide a better 'c++' approach for sprintf * For example c code is: - * sprintf(trash, "%04x|%04x", group , elem); + * char result[2048]; // hope 2048 is enough + * sprintf(result, "%04x|%04x", group , elem); * * c++ code is * std::ostringstream buf; @@ -97,12 +129,12 @@ namespace gdcm * buf.str(); * * gdcm style code is - * Format("%04x|%04x", group , elem); + * string result; + * result = gdcm::Util::Format("%04x|%04x", group , elem); */ - std::string Util::Format(const char *format, ...) { - char buffer[2048]; + char buffer[2048]; // hope 2048 is enough va_list args; va_start(args, format); vsprintf(buffer, format, args); //might be a security flaw @@ -114,12 +146,15 @@ std::string Util::Format(const char *format, ...) /** - * \ingroup Globals * \brief Because not available in C++ (?) + * @param str string to check + * @param tokens std::vector to receive the tokenized substrings + * @param delimiters string containing the character delimitors + */ void Util::Tokenize (const std::string &str, std::vector &tokens, - const std::string& delimiters) + const std::string &delimiters) { std::string::size_type lastPos = str.find_first_not_of(delimiters,0); std::string::size_type pos = str.find_first_of (delimiters,lastPos); @@ -132,36 +167,70 @@ void Util::Tokenize (const std::string &str, } /** - * \ingroup Globals * \brief Because not available in C++ (?) * Counts the number of occurences of a substring within a string + * @param str string to check + * @param subStr substring to count */ int Util::CountSubstring (const std::string &str, const std::string &subStr) { - int count = 0; // counts how many times it appears - std::string::size_type x = 0; // The index position in the string + int count = 0; // counts how many times it appears + std::string::size_type x = 0; // The index position in the string do { - x = str.find(subStr,x); // Find the substring - if (x != std::string::npos) // If present + x = str.find(subStr,x); // Find the substring + if (x != std::string::npos) // If present { - count++; // increase the count - x += subStr.length(); // Skip this word + count++; // increase the count + x += subStr.length(); // Skip this word } } - while (x != std::string::npos); // Carry on until not present + while (x != std::string::npos);// Carry on until not present return count; } /** - * \ingroup Globals + * \brief Checks whether a 'string' is printable or not (in order + * to avoid corrupting the terminal of invocation when printing) + * @param s string to check + */ +bool Util::IsCleanString(std::string const &s) +{ + for(unsigned int i=0; i 0) + if (str.size() > 0 ) { - if(!isprint((unsigned char)s[str.size()-1])) + if (!isprint((unsigned char)s[str.size()-1]) ) { - if(s[str.size()-1] == 0) + if (s[str.size()-1] == 0 ) { str[str.size()-1] = ' '; } } } - return str; } +/** + * \brief Replaces all special characters + * @param s string to modify + * @param rep replacement char + */ +void Util::ReplaceSpecChar(std::string &s, std::string &rep) +{ + unsigned int s_size = s.size(); + for(unsigned int i=0; i= '+' && s[i] <= '-') + || (s[i] >= 'a' && s[i] <= 'z') + || (s[i] >= '0' && s[i] <= '9') + || (s[i] >= 'A' && s[i] <= 'Z'))) + { + s.replace(i, 1, rep); + } + } + // deal with Dicom strings trailing '\0' + if(s[s_size-1] == rep.c_str()[0]) + s.erase(s_size-1, 1); +} + /** - * \ingroup Globals - * \brief Add a SEPARATOR to the end of the name is necessary + * \brief Weed out a string from the non-printable characters (in order + * to avoid corrupting the terminal of invocation when printing) + * @param s area to process (uint8_t is just for prototyping. feel free to cast) + * @param l area length to check + */ +std::string Util::CreateCleanString(uint8_t *s, int l) +{ + std::string str; + + for( int i=0; i pos2) + if ( pos1 > pos2 ) { res.resize(pos1); } @@ -227,23 +349,28 @@ std::string Util::GetPath(std::string const &fullName) { res.resize(pos2); } - +*/ + int pos = res.rfind(GDCM_FILESEPARATOR); + res.resize(pos); return res; } /** - * \ingroup Util * \brief Get the (last) name of a full path file name * @param fullName file/directory name to extract end name from */ std::string Util::GetName(std::string const &fullName) { std::string filename = fullName; - +/* std::string::size_type slash_pos = filename.rfind("/"); std::string::size_type backslash_pos = filename.rfind("\\"); - slash_pos = slash_pos > backslash_pos ? slash_pos : backslash_pos; - if(slash_pos != std::string::npos) + // At least with my gcc4.0.1, unfound char results in pos =4294967295 ... + //slash_pos = slash_pos > backslash_pos ? slash_pos : backslash_pos; + slash_pos = slash_pos < backslash_pos ? slash_pos : backslash_pos; +*/ + std::string::size_type slash_pos = filename.rfind(GDCM_FILESEPARATOR); + if (slash_pos != std::string::npos ) { return filename.substr(slash_pos + 1); } @@ -254,7 +381,6 @@ std::string Util::GetName(std::string const &fullName) } /** - * \ingroup Util * \brief Get the current date of the system in a dicom string */ std::string Util::GetCurrentDate() @@ -267,7 +393,6 @@ std::string Util::GetCurrentDate() } /** - * \ingroup Util * \brief Get the current time of the system in a dicom string */ std::string Util::GetCurrentTime() @@ -279,11 +404,91 @@ std::string Util::GetCurrentTime() return tmp; } +/** + * \brief Get both the date and time at the same time to avoid problem + * around midnight where the two calls could be before and after midnight + */ +std::string Util::GetCurrentDateTime() +{ + char tmp[40]; + long milliseconds; + time_t timep; + + // We need implementation specific functions to obtain millisecond precision +#if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__) + struct timeb tb; + ::ftime(&tb); + timep = tb.time; + milliseconds = tb.millitm; +#else + struct timeval tv; + gettimeofday (&tv, NULL); + timep = tv.tv_sec; + // Compute milliseconds from microseconds. + milliseconds = tv.tv_usec / 1000; +#endif + // Obtain the time of day, and convert it to a tm struct. + struct tm *ptm = localtime (&timep); + // Format the date and time, down to a single second. + strftime (tmp, sizeof (tmp), "%Y%m%d%H%M%S", ptm); + + // Add milliseconds + // Don't use Util::Format to accelerate execution of code + char tmpAll[80]; + sprintf(tmpAll,"%s%03ld",tmp,milliseconds); + + return tmpAll; +} + +unsigned int Util::GetCurrentThreadID() +{ +// FIXME the implementation is far from complete +#if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__) + return (unsigned int)GetCurrentThreadId(); +#else +#ifdef __linux__ + return 0; + // Doesn't work on fedora, but is in the man page... + //return (unsigned int)gettid(); +#else +#ifdef __sun + return (unsigned int)thr_self(); +#else + //default implementation + return 0; +#endif // __sun +#endif // __linux__ +#endif // Win32 +} + +unsigned int Util::GetCurrentProcessID() +{ +#if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__) + // NOTE: There is also a _getpid()... + return (unsigned int)GetCurrentProcessId(); +#else + // get process identification, POSIX + return (unsigned int)getpid(); +#endif +} + +/** + * \brief tells us whether the processor we are working with is BigEndian or not + */ +bool Util::IsCurrentProcessorBigEndian() +{ +#if defined(GDCM_WORDS_BIGENDIAN) + return true; +#else + return false; +#endif +} + /** * \brief Create a /DICOM/ string: * It should a of even length (no odd length ever) * It can contain as many (if you are reading this from your - * editor the following character is is backslash followed by zero + * editor the following character is backslash followed by zero * that needed to be escaped with an extra backslash for doxygen) \\0 * as you want. */ @@ -295,21 +500,20 @@ std::string Util::DicomString(const char *s, size_t l) } /** - * \ingroup Util * \brief Create a /DICOM/ string: - * It should a of even lenght (no odd length ever) + * It should a of even length (no odd length ever) * It can contain as many (if you are reading this from your - * editor the following character is is backslash followed by zero + * editor the following character is backslash followed by zero * that needed to be escaped with an extra backslash for doxygen) \\0 * as you want. * This function is similar to DicomString(const char*), - * except it doesn't take a lenght. + * except it doesn't take a length. * It only pad with a null character if length is odd */ std::string Util::DicomString(const char *s) { size_t l = strlen(s); - if( l%2 ) + if ( l%2 ) { l++; } @@ -319,79 +523,121 @@ std::string Util::DicomString(const char *s) } /** - * \ingroup Util - * \brief Safely compare two Dicom String: - * - Both string should be of even lenght - * - We allow padding of even lenght string by either a null - * character of a space + * \brief Safely check the equality of two Dicom String: + * - Both strings should be of even length + * - We allow padding of even length string by either + * a null character of a space */ bool Util::DicomStringEqual(const std::string &s1, const char *s2) { - // s2 is the string from the DICOM reference: 'MONOCHROME1' + // s2 is the string from the DICOM reference e.g. : 'MONOCHROME1' std::string s1_even = s1; //Never change input parameter std::string s2_even = DicomString( s2 ); - if( s1_even[s1_even.size()-1] == ' ') + if ( s1_even[s1_even.size()-1] == ' ' ) { s1_even[s1_even.size()-1] = '\0'; //replace space character by null } return s1_even == s2_even; } - - /** - * \ingroup Util - * \brief tells us if the processor we are working with is BigEndian or not + * \brief Safely compare two Dicom String: + * - Both strings should be of even length + * - We allow padding of even length string by either + * a null character of a space */ -bool Util::IsCurrentProcessorBigEndian() +bool Util::CompareDicomString(const std::string &s1, const char *s2, int op) { -#ifdef GDCM_WORDS_BIGENDIAN - return true; -#else - return false; -#endif + // s2 is the string from the DICOM reference e.g. : 'MONOCHROME1' + std::string s1_even = s1; //Never change input parameter + std::string s2_even = DicomString( s2 ); + if ( s1_even[s1_even.size()-1] == ' ' ) + { + s1_even[s1_even.size()-1] = '\0'; //replace space character by null + } + switch (op) + { + case GDCM_EQUAL : + return s1_even == s2_even; + case GDCM_DIFFERENT : + return s1_even != s2_even; + case GDCM_GREATER : + return s1_even > s2_even; + case GDCM_GREATEROREQUAL : + return s1_even >= s2_even; + case GDCM_LESS : + return s1_even < s2_even; + case GDCM_LESSOREQUAL : + return s1_even <= s2_even; + default : + gdcmDebugMacro(" Wrong operator : " << op); + return false; + } } - - #ifdef _WIN32 -typedef BOOL(WINAPI * pSnmpExtensionInit) ( - IN DWORD dwTimeZeroReference, - OUT HANDLE * hPollForTrapEvent, - OUT AsnObjectIdentifier * supportedView); - -typedef BOOL(WINAPI * pSnmpExtensionTrap) ( - OUT AsnObjectIdentifier * enterprise, - OUT AsnInteger * genericTrap, - OUT AsnInteger * specificTrap, - OUT AsnTimeticks * timeStamp, - OUT RFC1157VarBindList * variableBindings); - -typedef BOOL(WINAPI * pSnmpExtensionQuery) ( - IN BYTE requestType, - IN OUT RFC1157VarBindList * variableBindings, - OUT AsnInteger * errorStatus, - OUT AsnInteger * errorIndex); - -typedef BOOL(WINAPI * pSnmpExtensionInitEx) ( - OUT AsnObjectIdentifier * supportedView); + typedef BOOL(WINAPI * pSnmpExtensionInit) ( + IN DWORD dwTimeZeroReference, + OUT HANDLE * hPollForTrapEvent, + OUT AsnObjectIdentifier * supportedView); + + typedef BOOL(WINAPI * pSnmpExtensionTrap) ( + OUT AsnObjectIdentifier * enterprise, + OUT AsnInteger * genericTrap, + OUT AsnInteger * specificTrap, + OUT AsnTimeticks * timeStamp, + OUT RFC1157VarBindList * variableBindings); + + typedef BOOL(WINAPI * pSnmpExtensionQuery) ( + IN BYTE requestType, + IN OUT RFC1157VarBindList * variableBindings, + OUT AsnInteger * errorStatus, + OUT AsnInteger * errorIndex); + + typedef BOOL(WINAPI * pSnmpExtensionInitEx) ( + OUT AsnObjectIdentifier * supportedView); #endif //_WIN32 +#ifdef __sgi +static int SGIGetMacAddress(unsigned char *addr) +{ + FILE *f = popen("/etc/nvram eaddr","r"); + if(f == 0) + { + return -1; + } + unsigned int x[6]; + if(fscanf(f,"%02x:%02x:%02x:%02x:%02x:%02x", + x,x+1,x+2,x+3,x+4,x+5) != 6) + { + pclose(f); + return -1; + } + for(unsigned int i = 0; i < 6; i++) + { + addr[i] = static_cast(x[i]); + } + return 0; +} +#endif +/// \brief gets current M.A.C adress (for internal use only) +int GetMacAddrSys ( unsigned char *addr ); int GetMacAddrSys ( unsigned char *addr ) { #ifdef _WIN32 WSADATA WinsockData; - if (WSAStartup(MAKEWORD(2, 0), &WinsockData) != 0) + if ( (WSAStartup(MAKEWORD(2, 0), &WinsockData)) != 0 ) { - std::cerr << "This program requires Winsock 2.x!" << std::endl; + std::cerr << "in Get MAC Adress (internal) : This program requires Winsock 2.x!" + << std::endl; return -1; } HANDLE PollForTrapEvent; AsnObjectIdentifier SupportedView; - UINT OID_ifEntryType[] = { 1, 3, 6, 1, 2, 1, 2, 2, 1, 3 }; - UINT OID_ifEntryNum[] = { 1, 3, 6, 1, 2, 1, 2, 1 }; + UINT OID_ifEntryType[] = { 1, 3, 6, 1, 2, 1, 2, 2, 1, 3 }; + UINT OID_ifEntryNum[] = { 1, 3, 6, 1, 2, 1, 2, 1 }; UINT OID_ipMACEntAddr[] = { 1, 3, 6, 1, 2, 1, 2, 2, 1, 6 }; AsnObjectIdentifier MIB_ifMACEntAddr = { sizeof(OID_ipMACEntAddr) / sizeof(UINT), OID_ipMACEntAddr }; @@ -406,24 +652,18 @@ int GetMacAddrSys ( unsigned char *addr ) AsnObjectIdentifier MIB_NULL = { 0, 0 }; int ret; int dtmp; - int i = 0, j = 0; - BOOL found = FALSE; + int j = 0; // Load the SNMP dll and get the addresses of the functions necessary HINSTANCE m_hInst = LoadLibrary("inetmib1.dll"); if (m_hInst < (HINSTANCE) HINSTANCE_ERROR) { - m_hInst = NULL; return -1; } pSnmpExtensionInit m_Init = (pSnmpExtensionInit) GetProcAddress(m_hInst, "SnmpExtensionInit"); - pSnmpExtensionInitEx m_InitEx = - (pSnmpExtensionInitEx) GetProcAddress(m_hInst, "SnmpExtensionInitEx"); pSnmpExtensionQuery m_Query = (pSnmpExtensionQuery) GetProcAddress(m_hInst, "SnmpExtensionQuery"); - pSnmpExtensionTrap m_Trap = - (pSnmpExtensionTrap) GetProcAddress(m_hInst, "SnmpExtensionTrap"); m_Init(GetTickCount(), &PollForTrapEvent, &SupportedView); /* Initialize the variable list to be retrieved by m_Query */ @@ -435,10 +675,11 @@ int GetMacAddrSys ( unsigned char *addr ) // Inteface table varBindList.len = 1; // Only retrieving one item SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryNum); - ret = m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus, + m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus, &errorIndex); - printf("# of adapters in this system : %i\n", - varBind[0].value.asnValue.number); varBindList.len = 2; +// printf("# of adapters in this system : %i\n", +// varBind[0].value.asnValue.number); + varBindList.len = 2; // Copy in the OID of ifType, the type of interface SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryType); @@ -467,7 +708,6 @@ int GetMacAddrSys ( unsigned char *addr ) { j++; dtmp = varBind[0].value.asnValue.number; - std::cerr << "Interface #" << j << " type : " << dtmp << std::endl; // Type 6 describes ethernet interfaces if (dtmp == 6) @@ -484,7 +724,8 @@ int GetMacAddrSys ( unsigned char *addr ) && (varBind[1].value.asnValue.address.stream[4] == 0x00) ) { // Ignore all dial-up networking adapters - std::cerr << "Interface #" << j << " is a DUN adapter\n"; + std::cerr << "in Get MAC Adress (internal) : Interface #" + << j << " is a DUN adapter\n"; continue; } if ( (varBind[1].value.asnValue.address.stream[0] == 0x00) @@ -496,7 +737,8 @@ int GetMacAddrSys ( unsigned char *addr ) { // Ignore NULL addresses returned by other network // interfaces - std::cerr << "Interface #" << j << " is a NULL address\n"; + std::cerr << "in Get MAC Adress (internal) : Interface #" + << j << " is a NULL address\n"; continue; } memcpy( addr, varBind[1].value.asnValue.address.stream, 6); @@ -511,33 +753,34 @@ int GetMacAddrSys ( unsigned char *addr ) return 0; #endif //Win32 version +#if defined(__sgi) + return SGIGetMacAddress(addr); +#endif // __sgi + // implementation for POSIX system -#ifdef __sun +#if defined(CMAKE_HAVE_NET_IF_ARP_H) && defined(__sun) //The POSIX version is broken anyway on Solaris, plus would require full //root power - int i; struct arpreq parpreq; - struct sockaddr_in sa, *psa; - struct in_addr inaddr; + struct sockaddr_in *psa; struct hostent *phost; char hostname[MAXHOSTNAMELEN]; - unsigned char *ptr; char **paddrs; int sock, status=0; - if(gethostname(hostname, MAXHOSTNAMELEN) != 0) + if (gethostname(hostname, MAXHOSTNAMELEN) != 0 ) { - perror("gethostname"); + perror("in Get MAC Adress (internal) : gethostname"); return -1; } phost = gethostbyname(hostname); paddrs = phost->h_addr_list; sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); - if(sock == -1) + if (sock == -1 ) { - perror("sock"); + perror("in Get MAC Adress (internal) : sock"); return -1; } memset(&parpreq, 0, sizeof(struct arpreq)); @@ -548,9 +791,9 @@ int GetMacAddrSys ( unsigned char *addr ) memcpy(&psa->sin_addr, *paddrs, sizeof(struct in_addr)); status = ioctl(sock, SIOCGARP, &parpreq); - if(status == -1) + if (status == -1 ) { - perror("SIOCGARP"); + perror("in Get MAC Adress (internal) : SIOCGARP"); return -1; } memcpy(addr, parpreq.arp_ha.sa_data, 6); @@ -564,7 +807,7 @@ int GetMacAddrSys ( unsigned char *addr ) char buf[1024]; int n, i; unsigned char *a; -#ifdef AF_LINK +#if defined(AF_LINK) && (!defined(SIOCGIFHWADDR) && !defined(SIOCGENADDR)) struct sockaddr_dl *sdlp; #endif @@ -573,19 +816,19 @@ int GetMacAddrSys ( unsigned char *addr ) // max(sizeof(ifreq), sizeof(ifreq.ifr_name)+ifreq.ifr_addr.sa_len // However, under earlier systems, sa_len isn't present, so the size is // just sizeof(struct ifreq) -// We should investiage the use of SIZEOF_ADDR_IFREQ +// We should investigate the use of SIZEOF_ADDR_IFREQ // #ifdef HAVE_SA_LEN -#ifndef max -#define max(a,b) ((a) > (b) ? (a) : (b)) -#endif -#define ifreq_size(i) max(sizeof(struct ifreq),\ - sizeof((i).ifr_name)+(i).ifr_addr.sa_len) + #ifndef max + #define max(a,b) ((a) > (b) ? (a) : (b)) + #endif + #define ifreq_size(i) max(sizeof(struct ifreq),\ + sizeof((i).ifr_name)+(i).ifr_addr.sa_len) #else -#define ifreq_size(i) sizeof(struct ifreq) + #define ifreq_size(i) sizeof(struct ifreq) #endif // HAVE_SA_LEN - if( (sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0 ) + if ( (sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0 ) { return -1; } @@ -623,7 +866,7 @@ int GetMacAddrSys ( unsigned char *addr ) continue; a = (unsigned char *) &sdlp->sdl_data[sdlp->sdl_nlen]; #else - perror("No way to access hardware"); + perror("in Get MAC Adress (internal) : No way to access hardware"); close(sd); return -1; #endif // AF_LINK @@ -640,10 +883,40 @@ int GetMacAddrSys ( unsigned char *addr ) } close(sd); #endif + // Not implemented platforms (or no Ethernet cable !) + + /// \todo FIXME I wish we don't pollute command line applications when no Ethernet cable ! + //perror("Probabely your computer is not connected on a network, therefore its MAC adress cannot be found (or there is a configuration problem on your platform)"); + + // But the following -> error: invalid use of 'this' in non-member function + //gdcmWarningMacro( "Probabely your computer is not connected on a network, therefore its MAC adress cannot be found (or there is a configuration problem on your platform)"); + + memset(addr,0,6); return -1; #endif //__sun } +/** + * \brief Mini function to return the last digit from a number express in base 256 + * pre condition data contain an array of 6 unsigned char + * post condition carry contain the last digit + */ +inline int getlastdigit(unsigned char *data) +{ + int extended, carry = 0; + for(int i=0;i<6;i++) + { + extended = (carry << 8) + data[i]; + data[i] = extended / 10; + carry = extended % 10; + } + return carry; +} + +/** + * \brief Encode the mac address on a fixed length string of 15 characters. + * we save space this way. + */ std::string Util::GetMACAddress() { // This code is the result of a long internet search to find something @@ -652,28 +925,263 @@ std::string Util::GetMACAddress() // http://groups-beta.google.com/group/comp.unix.solaris/msg/ad36929d783d63be // http://bdn.borland.com/article/0,1410,26040,00.html unsigned char addr[6]; - std::string macaddr; - + int stat = GetMacAddrSys(addr); - if (0 == stat) + if (stat == 0) { - for (int i=0; i<6; ++i) + // We need to convert a 6 digit number from base 256 to base 10, using integer + // would requires a 48bits one. To avoid this we have to reimplement the div + modulo + // with string only + bool zero = false; + int res; + std::string sres; + while(!zero) { - macaddr += Format("%2.2x", addr[i]); - //if(i) macaddr += "."; - //macaddr += Format("%i", (int)addr[i]); + res = getlastdigit(addr); + sres.insert(sres.begin(), '0' + res); + zero = (addr[0] == 0) && (addr[1] == 0) && (addr[2] == 0) + && (addr[3] == 0) && (addr[4] == 0) && (addr[5] == 0); } - return macaddr; + + return sres; } else { - gdcmVerboseMacro("Problem in finding the MAC Address"); + gdcmStaticWarningMacro("Problem in finding the MAC Address"); return ""; } } /** - * \ingroup Util + * \brief Creates a new UID. As stipulated in the DICOM ref + * each time a DICOM image is created it should have + * a unique identifier (URI) + * @param root is the DICOM prefix assigned by IOS group + */ +std::string Util::CreateUniqueUID(const std::string &root) +{ + std::string prefix; + std::string append; + if ( root.empty() ) + { + // gdcm UID prefix, as supplied by http://www.medicalconnections.co.uk + prefix = RootUID; + } + else + { + prefix = root; + } + + // A root was specified use it to forge our new UID: + append += "."; + //append += Util::GetMACAddress(); // to save CPU time + append += Util::GDCM_MAC_ADRESS; + append += "."; + append += Util::GetCurrentDateTime(); + append += "."; + //Also add a mini random number just in case: + char tmp[10]; + int r = (int) (100.0*rand()/RAND_MAX); + // Don't use Util::Format to accelerate the execution + sprintf(tmp,"%02d", r); + append += tmp; + + // If append is too long we need to rehash it + if ( (prefix + append).size() > 64 ) + { + gdcmStaticErrorMacro( "Size of UID is too long." ); + // we need a hash function to truncate this number + // if only md5 was cross plateform + // MD5(append); + } + + return prefix + append; +} + +void Util::SetRootUID(const std::string &root) +{ + if ( root.empty() ) + RootUID = GDCM_UID; + else + RootUID = root; +} + +const std::string &Util::GetRootUID() +{ + return RootUID; +} + +//------------------------------------------------------------------------- +/** + * \brief binary_write binary_write + * @param os ostream to write to + * @param val 16 bits value to write + */ +std::ostream &binary_write(std::ostream &os, const uint16_t &val) +{ +#if defined(GDCM_WORDS_BIGENDIAN) || defined(GDCM_FORCE_BIGENDIAN_EMULATION) + uint16_t swap; + swap = ( val << 8 | val >> 8 ); + + return os.write(reinterpret_cast(&swap), 2); +#else + return os.write(reinterpret_cast(&val), 2); +#endif //GDCM_WORDS_BIGENDIAN +} + +/** + * \brief binary_write binary_write + * @param os ostream to write to + * @param val 32 bits value to write + */ +std::ostream &binary_write(std::ostream &os, const uint32_t &val) +{ +#if defined(GDCM_WORDS_BIGENDIAN) || defined(GDCM_FORCE_BIGENDIAN_EMULATION) + uint32_t swap; + swap = ( (val<<24) | ((val<<8) & 0x00ff0000) | + ((val>>8) & 0x0000ff00) | (val>>24) ); + return os.write(reinterpret_cast(&swap), 4); +#else + return os.write(reinterpret_cast(&val), 4); +#endif //GDCM_WORDS_BIGENDIAN +} + +/** + * \brief binary_write binary_write + * @param os ostream to write to + * @param val double (64 bits) value to write + */ +std::ostream &binary_write(std::ostream &os, const double &val) +{ +#if defined(GDCM_WORDS_BIGENDIAN) || defined(GDCM_FORCE_BIGENDIAN_EMULATION) + double swap = val; + + char *beg = (char *)&swap; + char *end = beg + 7; + char t; + for (unsigned int i = 0; i<7; i++) + { + t = *beg; + *beg = *end; + *end = t; + beg++, + end--; + } + return os.write(reinterpret_cast(&swap), 8); +#else + return os.write(reinterpret_cast(&val), 8); +#endif //GDCM_WORDS_BIGENDIAN +} + +/** + * \brief binary_write binary_write + * @param os ostream to write to + * @param val 8 bits characters aray to write + */ +std::ostream &binary_write(std::ostream &os, const char *val) +{ + return os.write(val, strlen(val)); +} + +/** + * \brief binary_write binary_write + * @param os ostream to write to + * @param val std::string value to write + */ +std::ostream &binary_write(std::ostream &os, std::string const &val) +{ + return os.write(val.c_str(), val.size()); +} + +/** + * \brief binary_write binary_write + * @param os ostream to write to + * @param val 8 bits 'characters' aray to write + * @param len length of the 'value' to be written + */ +std::ostream &binary_write(std::ostream &os, const uint8_t *val, size_t len) +{ + // We are writting sizeof(char) thus no need to swap bytes + return os.write(reinterpret_cast(val), len); +} + +/** + * \brief binary_write binary_write + * @param os ostream to write to + * @param val 16 bits words aray to write + * @param len length (in bytes) of the 'value' to be written + */ +std::ostream &binary_write(std::ostream &os, const uint16_t *val, size_t len) +{ +// This is tricky since we are writting two bytes buffer. +// Be carefull with little endian vs big endian. +// Also this other trick is to allocate a small (efficient) buffer that store +// intermediate result before writting it. +#if defined(GDCM_WORDS_BIGENDIAN) || defined(GDCM_FORCE_BIGENDIAN_EMULATION) + const int BUFFER_SIZE = 4096; + static char buffer[BUFFER_SIZE]; + uint16_t *binArea16 = (uint16_t*)val; //for the const + + // how many BUFFER_SIZE long pieces in binArea ? + int nbPieces = len/BUFFER_SIZE; //(16 bits = 2 Bytes) + int remainingSize = len%BUFFER_SIZE; + + for (int j=0;j> 8 | *binArea16 << 8; + pbuffer++; + binArea16++; + } + os.write ( buffer, BUFFER_SIZE ); + } + if ( remainingSize > 0) + { + uint16_t *pbuffer = (uint16_t*)buffer; //reinitialize pbuffer + for (int i = 0; i < remainingSize/2; i++) + { + *pbuffer = *binArea16 >> 8 | *binArea16 << 8; + pbuffer++; + binArea16++; + } + os.write ( buffer, remainingSize ); + } + return os; +#else + return os.write(reinterpret_cast(val), len); +#endif +} + +std::string Util::ConvertToMD5 (std::string &inPszToCrypt) +{ + char *szChar = new char[ inPszToCrypt.size()+1 ]; + char *szHexOutput = new char[ 16 * 2 + 1 ]; + int nLen,nDi; + strcpy( szChar, inPszToCrypt.c_str() ); + // création du code md5 + nLen = strlen( szChar ); + md5_state_t state; + uint8_t digest[ 16 ]; + md5_init ( &state ); + md5_append ( &state, (const uint8_t *)szChar, nLen); + md5_finish ( &state, digest ); + for ( nDi = 0; nDi < 16; nDi++) + sprintf( szHexOutput + nDi * 2, "%02x", digest[ nDi ] ); + szHexOutput[16 * 2]=0; + delete [] szChar; + std::string md5String=szHexOutput; + delete [] szHexOutput; + return md5String; +} + +//------------------------------------------------------------------------- +// Protected + +//------------------------------------------------------------------------- +// Private +/** * \brief Return the IP adress of the machine writting the DICOM image */ std::string Util::GetIPAddress() @@ -684,11 +1192,11 @@ std::string Util::GetIPAddress() // SUSv2 guarantees that `Host names are limited to 255 bytes'. // POSIX 1003.1-2001 guarantees that `Host names (not including the // terminating NUL) are limited to HOST_NAME_MAX bytes'. -# define HOST_NAME_MAX 255 +#define HOST_NAME_MAX 255 // In this case we should maybe check the string was not truncated. // But I don't known how to check that... -#if defined(_MSC_VER) || defined(__BORLANDC__) - // with WinSock DLL we need to initialise the WinSock before using gethostname +#if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__) + // with WinSock DLL we need to initialize the WinSock before using gethostname WORD wVersionRequested = MAKEWORD(1,0); WSADATA WSAData; int err = WSAStartup(wVersionRequested,&WSAData); @@ -707,7 +1215,7 @@ std::string Util::GetIPAddress() char szHostName[HOST_NAME_MAX+1]; int r = gethostname(szHostName, HOST_NAME_MAX); - if( r == 0 ) + if ( r == 0 ) { // Get host adresses struct hostent *pHost = gethostbyname(szHostName); @@ -716,14 +1224,14 @@ std::string Util::GetIPAddress() { for( int j = 0; jh_length; j++ ) { - if( j > 0 ) str += "."; + if ( j > 0 ) str += "."; str += Util::Format("%u", (unsigned int)((unsigned char*)pHost->h_addr_list[i])[j]); } // str now contains one local IP address -#if defined(_MSC_VER) || defined(__BORLANDC__) +#if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__) WSACleanup(); #endif @@ -734,71 +1242,395 @@ std::string Util::GetIPAddress() return str; } -/** - * \ingroup Util - * \brief Creates a new UID. As stipulate in the DICOM ref - * each time a DICOM image is create it should have - * a unique identifier (URI) - */ -std::string Util::CreateUniqueUID(const std::string &root) +void Util::hfpswap(double *a, double *b) { - std::string radical = root; - if( !root.size() ) - { - // No root was specified use "GDCM" then - // echo "gdcm" | od -b - // 0000000 147 144 143 155 012 - radical = "147.144.143.155"; // special easter egg - } - // else - // A root was specified use it to forge our new UID: - radical += Util::GetMACAddress(); - radical += "."; - radical += Util::GetCurrentDate(); - radical += "."; - radical += Util::GetCurrentTime(); - - return radical; + double tmp; + tmp=*a; + *a=*b; + *b=tmp; } -template -std::ostream &binary_write(std::ostream &os, const T &val) -{ - return os.write(reinterpret_cast(&val), sizeof val); -} +// for MD5 +/* + Copyright (C) 1999, 2000, 2002 Aladdin Enterprises. All rights reserved. -std::ostream &binary_write(std::ostream &os, const uint16_t &val) -{ -#ifdef GDCM_WORDS_BIGENDIAN - uint16_t swap; - swap = ((( val << 8 ) & 0x0ff00 ) | (( val >> 8 ) & 0x00ff ) ); - return os.write(reinterpret_cast(&swap), 2); + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. + + L. Peter Deutsch + + ghost@aladdin.com + */ + +/* $Id: gdcmUtil.cxx,v 1.189 2007/10/17 08:57:55 jpr Exp $ */ + +/* + Independent implementation of MD5 (RFC 1321). + This code implements the MD5 Algorithm defined in RFC 1321, whose + text is available at + + http://www.ietf.org/rfc/rfc1321.txt + + The code is derived from the text of the RFC, including the test suite + (section A.5) but excluding the rest of Appendix A. It does not include + any code or documentation that is identified in the RFC as being + copyrighted. + + The original and principal author of md5.c is L. Peter Deutsch + . Other authors are noted in the change history + that follows (in reverse chronological order): + + 2002-04-13 lpd Clarified derivation from RFC 1321; now handles byte order + either statically or dynamically; added missing #include + in library. + 2002-03-11 lpd Corrected argument list for main(), and added int return + type, in test program and T value program. + 2002-02-21 lpd Added missing #include in test program. + 2000-07-03 lpd Patched to eliminate warnings about "constant is + unsigned in ANSI C, signed in traditional"; made test program + self-checking. + 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. + 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5). + 1999-05-03 lpd Original version. + */ + +//#include "md5.h" +//#include + +#undef BYTE_ORDER /* 1 = big-endian, -1 = little-endian, 0 = unknown */ +#ifdef ARCH_IS_BIG_ENDIAN +# define BYTE_ORDER (ARCH_IS_BIG_ENDIAN ? 1 : -1) #else - return os.write(reinterpret_cast(&val), 2); -#endif //GDCM_WORDS_BIGENDIAN -} +# define BYTE_ORDER 0 +#endif -std::ostream &binary_write(std::ostream &os, const uint32_t &val) + +#define T_MASK ((uint16_t)~0) +#define T1 /* 0xd76aa478 */ (T_MASK ^ 0x28955b87) +#define T2 /* 0xe8c7b756 */ (T_MASK ^ 0x173848a9) +#define T3 0x242070db +#define T4 /* 0xc1bdceee */ (T_MASK ^ 0x3e423111) +#define T5 /* 0xf57c0faf */ (T_MASK ^ 0x0a83f050) +#define T6 0x4787c62a +#define T7 /* 0xa8304613 */ (T_MASK ^ 0x57cfb9ec) +#define T8 /* 0xfd469501 */ (T_MASK ^ 0x02b96afe) +#define T9 0x698098d8 +#define T10 /* 0x8b44f7af */ (T_MASK ^ 0x74bb0850) +#define T11 /* 0xffff5bb1 */ (T_MASK ^ 0x0000a44e) +#define T12 /* 0x895cd7be */ (T_MASK ^ 0x76a32841) +#define T13 0x6b901122 +#define T14 /* 0xfd987193 */ (T_MASK ^ 0x02678e6c) +#define T15 /* 0xa679438e */ (T_MASK ^ 0x5986bc71) +#define T16 0x49b40821 +#define T17 /* 0xf61e2562 */ (T_MASK ^ 0x09e1da9d) +#define T18 /* 0xc040b340 */ (T_MASK ^ 0x3fbf4cbf) +#define T19 0x265e5a51 +#define T20 /* 0xe9b6c7aa */ (T_MASK ^ 0x16493855) +#define T21 /* 0xd62f105d */ (T_MASK ^ 0x29d0efa2) +#define T22 0x02441453 +#define T23 /* 0xd8a1e681 */ (T_MASK ^ 0x275e197e) +#define T24 /* 0xe7d3fbc8 */ (T_MASK ^ 0x182c0437) +#define T25 0x21e1cde6 +#define T26 /* 0xc33707d6 */ (T_MASK ^ 0x3cc8f829) +#define T27 /* 0xf4d50d87 */ (T_MASK ^ 0x0b2af278) +#define T28 0x455a14ed +#define T29 /* 0xa9e3e905 */ (T_MASK ^ 0x561c16fa) +#define T30 /* 0xfcefa3f8 */ (T_MASK ^ 0x03105c07) +#define T31 0x676f02d9 +#define T32 /* 0x8d2a4c8a */ (T_MASK ^ 0x72d5b375) +#define T33 /* 0xfffa3942 */ (T_MASK ^ 0x0005c6bd) +#define T34 /* 0x8771f681 */ (T_MASK ^ 0x788e097e) +#define T35 0x6d9d6122 +#define T36 /* 0xfde5380c */ (T_MASK ^ 0x021ac7f3) +#define T37 /* 0xa4beea44 */ (T_MASK ^ 0x5b4115bb) +#define T38 0x4bdecfa9 +#define T39 /* 0xf6bb4b60 */ (T_MASK ^ 0x0944b49f) +#define T40 /* 0xbebfbc70 */ (T_MASK ^ 0x4140438f) +#define T41 0x289b7ec6 +#define T42 /* 0xeaa127fa */ (T_MASK ^ 0x155ed805) +#define T43 /* 0xd4ef3085 */ (T_MASK ^ 0x2b10cf7a) +#define T44 0x04881d05 +#define T45 /* 0xd9d4d039 */ (T_MASK ^ 0x262b2fc6) +#define T46 /* 0xe6db99e5 */ (T_MASK ^ 0x1924661a) +#define T47 0x1fa27cf8 +#define T48 /* 0xc4ac5665 */ (T_MASK ^ 0x3b53a99a) +#define T49 /* 0xf4292244 */ (T_MASK ^ 0x0bd6ddbb) +#define T50 0x432aff97 +#define T51 /* 0xab9423a7 */ (T_MASK ^ 0x546bdc58) +#define T52 /* 0xfc93a039 */ (T_MASK ^ 0x036c5fc6) +#define T53 0x655b59c3 +#define T54 /* 0x8f0ccc92 */ (T_MASK ^ 0x70f3336d) +#define T55 /* 0xffeff47d */ (T_MASK ^ 0x00100b82) +#define T56 /* 0x85845dd1 */ (T_MASK ^ 0x7a7ba22e) +#define T57 0x6fa87e4f +#define T58 /* 0xfe2ce6e0 */ (T_MASK ^ 0x01d3191f) +#define T59 /* 0xa3014314 */ (T_MASK ^ 0x5cfebceb) +#define T60 0x4e0811a1 +#define T61 /* 0xf7537e82 */ (T_MASK ^ 0x08ac817d) +#define T62 /* 0xbd3af235 */ (T_MASK ^ 0x42c50dca) +#define T63 0x2ad7d2bb +#define T64 /* 0xeb86d391 */ (T_MASK ^ 0x14792c6e) + + +void +Util::md5_process(md5_state_t *pms, const uint8_t *data /*[64]*/) { -#ifdef GDCM_WORDS_BIGENDIAN - uint32_t swap; - swap = ( ((val<<24) & 0xff000000) | ((val<<8) & 0x00ff0000) | - ((val>>8) & 0x0000ff00) | ((val>>24) & 0x000000ff) ); - return os.write(reinterpret_cast(&swap), 4); + uint16_t + a = pms->abcd[0], b = pms->abcd[1], + c = pms->abcd[2], d = pms->abcd[3]; + uint16_t t; + +#if BYTE_ORDER > 0 + /* Define storage only for big-endian CPUs. */ + uint16_t X[16]; #else - return os.write(reinterpret_cast(&val), 4); -#endif //GDCM_WORDS_BIGENDIAN + /* Define storage for little-endian or both types of CPUs. */ + uint16_t xbuf[16]; + const uint16_t *X; +#endif + { +#if BYTE_ORDER == 0 +/* + * Determine dynamically whether this is a big-endian or + * little-endian machine, since we can use a more efficient + * algorithm on the latter. + */ +static const int w = 1; + +if (*((const uint8_t *)&w)) /* dynamic little-endian */ +#endif +#if BYTE_ORDER <= 0 /* little-endian */ +{ + /* + * On little-endian machines, we can process properly aligned + * data without copying it. + */ + if (!((data - (const uint8_t *)0) & 3)) { + /* data are properly aligned */ + X = (const uint16_t *)data; + } else { + /* not aligned */ + memcpy(xbuf, data, 64); + X = xbuf; + } } +#endif +#if BYTE_ORDER == 0 +else /* dynamic big-endian */ +#endif +#if BYTE_ORDER >= 0 /* big-endian */ +{ + /* + * On big-endian machines, we must arrange the bytes in the + * right order. + */ + const uint8_t *xp = data; + int i; + +# if BYTE_ORDER == 0 + X = xbuf; /* (dynamic only) */ +# else +# define xbuf /* (static only) */ +# endif + for (i = 0; i < 16; ++i, xp += 4) + xbuf[i] = xp[0] + (xp[1] << 8) + (xp[2] << 16) + (xp[3] << 24); + } +#endif + } -std::ostream &binary_write(std::ostream &os, const char *val) +#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n)))) + + /* Round 1. */ + /* Let [abcd k s i] denote the operation + a = b + ((a + F(b,c,d) + X[k] + T[i]) <<< s). */ + +#define F(x, y, z) (((x) & (y)) | (~(x) & (z))) +#define SET(a, b, c, d, k, s, Ti) \ + t = a + F(b,c,d) + X[k] + Ti;\ + a = ROTATE_LEFT(t, s) + b + /* Do the following 16 operations. */ + SET(a, b, c, d, 0, 7, T1); + SET(d, a, b, c, 1, 12, T2); + SET(c, d, a, b, 2, 17, T3); + SET(b, c, d, a, 3, 22, T4); + SET(a, b, c, d, 4, 7, T5); + SET(d, a, b, c, 5, 12, T6); + SET(c, d, a, b, 6, 17, T7); + SET(b, c, d, a, 7, 22, T8); + SET(a, b, c, d, 8, 7, T9); + SET(d, a, b, c, 9, 12, T10); + SET(c, d, a, b, 10, 17, T11); + SET(b, c, d, a, 11, 22, T12); + SET(a, b, c, d, 12, 7, T13); + SET(d, a, b, c, 13, 12, T14); + SET(c, d, a, b, 14, 17, T15); + SET(b, c, d, a, 15, 22, T16); +#undef SET + /* Round 2. */ + /* Let [abcd k s i] denote the operation + a = b + ((a + G(b,c,d) + X[k] + T[i]) <<< s). */ + +#define G(x, y, z) (((x) & (z)) | ((y) & ~(z))) +#define SET(a, b, c, d, k, s, Ti)\ + t = a + G(b,c,d) + X[k] + Ti; \ + a = ROTATE_LEFT(t, s) + b + /* Do the following 16 operations. */ + SET(a, b, c, d, 1, 5, T17); + SET(d, a, b, c, 6, 9, T18); + SET(c, d, a, b, 11, 14, T19); + SET(b, c, d, a, 0, 20, T20); + SET(a, b, c, d, 5, 5, T21); + SET(d, a, b, c, 10, 9, T22); + SET(c, d, a, b, 15, 14, T23); + SET(b, c, d, a, 4, 20, T24); + SET(a, b, c, d, 9, 5, T25); + SET(d, a, b, c, 14, 9, T26); + SET(c, d, a, b, 3, 14, T27); + SET(b, c, d, a, 8, 20, T28); + SET(a, b, c, d, 13, 5, T29); + SET(d, a, b, c, 2, 9, T30); + SET(c, d, a, b, 7, 14, T31); + SET(b, c, d, a, 12, 20, T32); +#undef SET + /* Round 3. */ + /* Let [abcd k s t] denote the operation + a = b + ((a + H(b,c,d) + X[k] + T[i]) <<< s). */ +#define H(x, y, z) ((x) ^ (y) ^ (z)) +#define SET(a, b, c, d, k, s, Ti)\ + t = a + H(b,c,d) + X[k] + Ti; \ + a = ROTATE_LEFT(t, s) + b + + /* Do the following 16 operations. */ + SET(a, b, c, d, 5, 4, T33); + SET(d, a, b, c, 8, 11, T34); + SET(c, d, a, b, 11, 16, T35); + SET(b, c, d, a, 14, 23, T36); + SET(a, b, c, d, 1, 4, T37); + SET(d, a, b, c, 4, 11, T38); + SET(c, d, a, b, 7, 16, T39); + SET(b, c, d, a, 10, 23, T40); + SET(a, b, c, d, 13, 4, T41); + SET(d, a, b, c, 0, 11, T42); + SET(c, d, a, b, 3, 16, T43); + SET(b, c, d, a, 6, 23, T44); + SET(a, b, c, d, 9, 4, T45); + SET(d, a, b, c, 12, 11, T46); + SET(c, d, a, b, 15, 16, T47); + SET(b, c, d, a, 2, 23, T48); +#undef SET + /* Round 4. */ + /* Let [abcd k s t] denote the operation + a = b + ((a + I(b,c,d) + X[k] + T[i]) <<< s). */ +#define I(x, y, z) ((y) ^ ((x) | ~(z))) +#define SET(a, b, c, d, k, s, Ti)\ + t = a + I(b,c,d) + X[k] + Ti; \ + a = ROTATE_LEFT(t, s) + b + + /* Do the following 16 operations. */ + SET(a, b, c, d, 0, 6, T49); + SET(d, a, b, c, 7, 10, T50); + SET(c, d, a, b, 14, 15, T51); + SET(b, c, d, a, 5, 21, T52); + SET(a, b, c, d, 12, 6, T53); + SET(d, a, b, c, 3, 10, T54); + SET(c, d, a, b, 10, 15, T55); + SET(b, c, d, a, 1, 21, T56); + SET(a, b, c, d, 8, 6, T57); + SET(d, a, b, c, 15, 10, T58); + SET(c, d, a, b, 6, 15, T59); + SET(b, c, d, a, 13, 21, T60); + SET(a, b, c, d, 4, 6, T61); + SET(d, a, b, c, 11, 10, T62); + SET(c, d, a, b, 2, 15, T63); + SET(b, c, d, a, 9, 21, T64); + +#undef SET + /* Then perform the following additions. (That is increment each + of the four registers by the value it had before this block + was started.) */ + pms->abcd[0] += a; + pms->abcd[1] += b; + pms->abcd[2] += c; + pms->abcd[3] += d; +} +void +Util::md5_init(md5_state_t *pms) { - return os.write(val, strlen(val)); + pms->count[0] = pms->count[1] = 0; + pms->abcd[0] = 0x67452301; + pms->abcd[1] = /*0xefcdab89*/ T_MASK ^ 0x10325476; + pms->abcd[2] = /*0x98badcfe*/ T_MASK ^ 0x67452301; + pms->abcd[3] = 0x10325476; } -std::ostream &binary_write(std::ostream &os, std::string const &val) + +void +Util::md5_append(md5_state_t *pms, const uint8_t *data, int nbytes) { - return os.write(val.c_str(), val.size()); + const uint8_t *p = data; + int left = nbytes; + int offset = (pms->count[0] >> 3) & 63; + uint16_t nbits = (uint16_t)(nbytes << 3); + if (nbytes <= 0) + return; + /* Update the message length. */ + pms->count[1] += nbytes >> 29; + pms->count[0] += nbits; + if (pms->count[0] < nbits) + pms->count[1]++; + /* Process an initial partial block. */ + if (offset) { + int copy = (offset + nbytes > 64 ? 64 - offset : nbytes); + memcpy(pms->buf + offset, p, copy); + if (offset + copy < 64) + return; + p += copy; + left -= copy; + md5_process(pms, pms->buf); + } + /* Process full blocks. */ + for (; left >= 64; p += 64, left -= 64) + md5_process(pms, p); + /* Process a final partial block. */ + if (left) + memcpy(pms->buf, p, left); +} +void +Util::md5_finish(md5_state_t *pms, uint8_t digest[16]) +{ + static const uint8_t pad[64] = { + 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 + }; + + uint8_t data[8]; + int i; + /* Save the length before padding. */ + for (i = 0; i < 8; ++i) + data[i] = (uint8_t)(pms->count[i >> 2] >> ((i & 3) << 3)); + /* Pad to 56 bytes mod 64. */ + md5_append(pms, pad, ((55 - (pms->count[0] >> 3)) & 63) + 1); + /* Append the length. */ + md5_append(pms, data, 8); + for (i = 0; i < 16; ++i) + digest[i] = (uint8_t)(pms->abcd[i >> 2] >> ((i & 3) << 3)); } +//------------------------------------------------------------------------- } // end namespace gdcm