SysTutorials Posts

operator+(std::move_iterator) – operator+(std::move_iterator) Synopsis template <class Iter> move_iterator<Iter>(until C++ 17) operator+(typename move_iterator<Iter>::difference_type n, const move_iterator<Iter> &it); template <class Iter> constexpr move_iterator<Iter>(since C++ 17) operator+(typename move_iterator<Iter>::difference_type n, const move_iterator<Iter> &it); Returns the iterator it incremented by n. Parameters n – the number of positions to increment the iterator it – the iterator adaptor to increment Return…

QuantLib::Array – 1-D array used in linear algebra. Synopsis void swap (Array &) Related Functions (Note that these are not member functions.) Real DotProduct (const Array &, const Array &) const Disposable< Array > operator+ (const Array &v) const Disposable< Array > operator- (const Array &v) const Disposable< Array > operator+ (const Array &, const…

operator&,|,^(std::bitset) – operator&,|,^(std::bitset) Synopsis template <std::size_t N> (1) bitset<N> operator&(const bitset<N> &lhs, const bitset<N> &rhs); template <std::size_t N> (2) bitset<N> operator|(const bitset<N> &lhs, const bitset<N> &rhs); template <std::size_t N> (3) bitset<N> operator^(const bitset<N> &lhs, const bitset<N> &rhs); Performs binary AND, OR, and XOR between two bitsets, lhs and rhs. 1) Returns a bitset<N> containing the…

openpty, login_tty, forkpty – terminal utility functions Synopsis #include <pty.h> int openpty(int *amaster, int *aslave, char *name, const struct termios *termp, const struct winsize *winp); pid_t forkpty(int *amaster, char *name, const struct termios *termp, const struct winsize *winp); #include <utmp.h> int login_tty(int fd); Link with – lutil. Description The openpty() function finds an available pseudoterminal…

openproc, closeproc – initialize process information from /proc/ Synopsis #include <proc/readproc.h> PROCTAB* openproc (int flags, … ); void closeproc (PROCTAB* PT); Synopsis The openproc function initializes a PROCTAB structure which can be used by iterated readproc calls to get information on current processes. Depending on flags, openproc may need a second argument or a second…

oath_strerror – API function Synopsis #include <oath.h> const char *oath_strerror(int err); Arguments int err liboath error code Description Convert return code to human readable string explanation of the reason for the particular error code. This string can be used to output a diagnostic message to the user. This function is one of few in the…

oath_init – API function Synopsis #include <oath.h> int oath_init(void); Arguments void Description This function initializes the OATH library. Every user of this library needs to call this function before using other functions. You should call oath_done() when use of the OATH library is no longer needed. Note that this function may also initialize Libgcrypt, if…

oath_hotp_validate_callback – API function Synopsis #include <oath.h> int oath_hotp_validate_callback(const char *secret, size_t secret_length, uint64_t start_moving_factor, size_t window, unsigned digits, oath_validate_strcmp_function strcmp_otp, void *strcmp_handle); Arguments const char * secret the shared secret string size_t secret_length length of secret uint64_t start_moving_factor start counter in OTP stream size_t window how many OTPs after start counter to test unsigned…

oath_hotp_validate – API function Synopsis #include <oath.h> int oath_hotp_validate(const char *secret, size_t secret_length, uint64_t start_moving_factor, size_t window, const char *otp); Arguments const char * secret the shared secret string size_t secret_length length of secret uint64_t start_moving_factor start counter in OTP stream size_t window how many OTPs after start counter to test const char * otp…

oath_hotp_generate – API function Synopsis #include <oath.h> int oath_hotp_generate(const char *secret, size_t secret_length, uint64_t moving_factor, unsigned digits, bool add_checksum, size_t truncation_offset, char *output_otp); Arguments const char * secret the shared secret string size_t secret_length length of secret uint64_t moving_factor a counter indicating the current OTP to generate unsigned digits number of requested digits in the…

oath_hex2bin – API function Synopsis #include <oath.h> int oath_hex2bin(const char *hexstr, char *binstr, size_t *binlen); Arguments const char * hexstr input string with hex data char * binstr output string that holds binary data, or NULL size_t * binlen output variable holding needed length of binstr Description Convert string with hex data to binary data….

oath_done – API function Synopsis #include <oath.h> int oath_done(void); Arguments void Description This function deinitializes the OATH library, which were initialized using oath_init(). After calling this function, no other OATH library function may be called except for to re-initialize the library using oath_init(). Returns On success, OATH_OK (zero) is returned, otherwise an error code is…

oath_check_version – API function Synopsis #include <oath.h> const char *oath_check_version(const char *req_version); Arguments const char * req_version version string to compare with, or NULL. Description Check OATH library version. See OATH_VERSION for a suitable req_version string. This function is one of few in the library that can be used without a successful call to oath_init()….

oath_bin2hex – API function Synopsis #include <oath.h> void oath_bin2hex(const char *binstr, size_t binlen, char *hexstr); Arguments const char * binstr input binary data size_t binlen length of input binary data binstr char * hexstr output string with hex data, must have room for 2*binlen+1. Description Convert binary data to NUL-terminated string with hex data. The…

oath_base32_encode – API function Synopsis #include <oath.h> int oath_base32_encode(const char *in, size_t inlen, char **out, size_t *outlen); Arguments const char * in input string with binary data of length inlen size_t inlen length of input data in char ** out pointer to newly allocated output string of length outlen, or NULL size_t * outlen pointer…

oath_base32_decode – API function Synopsis #include <oath.h> int oath_base32_decode(const char *in, size_t inlen, char **out, size_t *outlen); Arguments const char * in input string with base32 encoded data of length inlen size_t inlen length of input base32 string in char ** out pointer to output variable for binary data of length outlen, or NULL size_t…

oath_authenticate_usersfile – API function Synopsis #include <oath.h> int oath_authenticate_usersfile(const char *usersfile, const char *username, const char *otp, size_t window, const char *passwd, time_t *last_otp); Arguments const char * usersfile string with user credential filename, in UsersFile format const char * username string with name of user const char * otp string with one-time password to…

nutscan_scan_xml_http – Scan network for XML/HTTP devices. Synopsis #include <nut-scan.h> nutscan_device_t * nutscan_scan_xml_http(long usec_timeout); Description The nutscan_scan_xml_http() function try to detect NUT compatible XML/HTTP devices. It does this by issuing a broadcast message on currently configured network interfaces. It waits up to usec_timeout microseconds for a response from potential devices. You MUST call nutscan_init(3) before…

nutscan_scan_usb – Scan NUT compatible USB devices. Synopsis #include <nut-scan.h> nutscan_device_t * nutscan_scan_usb(); Description The nutscan_scan_usb() function try to detect NUT compatible USB devices. You MUST call nutscan_init(3) before using this function. Return Value The nutscan_scan_usb() function returns a pointer to a nutscan_device_t structure containing all found devices or NULL if an error occurs or…

nutscan_scan_snmp – Scan network for SNMP devices. Synopsis #include <nut-scan.h> nutscan_device_t * nutscan_scan_snmp(const char * start_ip,const char * stop_ip,long timeout, nutscan_snmp_t * sec); Description The nutscan_scan_snmp() function try to detect NUT compatible SNMP devices. It tries SNMP queries on every IP ranging from start_ip to stop_ip. Those IP may be either IPv4 or IPv6 addresses…