other versions
- buster 4.08.06-1
- testing 5.07.00-1
- unstable 5.07.00-1
- experimental 5.09.01-1
FBB::Hostent(3bobcat) | struct hostent wrapper | FBB::Hostent(3bobcat) |
NAME¶
FBB::Hostent - Wrapper around a struct hostentSYNOPSIS¶
#include <bobcat/hostent>Linking option: -lbobcat
DESCRIPTION¶
@CLASS objects are wrappers around hostent structs which may be used by other objects. A struct hostent is defined as follows:struct hostent { char *h_name; // official name of host char **h_aliases; // alias list int h_addrtype; // host address type (always AF_INET) int h_length; // length of address char **h_addr_list; // list of addresses }
The address fields are binary values of the addresses, each address requiring h_length bytes, the last address being equal to 0. The @CLASS objects offer a C++-like interface to this struct.
NAMESPACE¶
FBBAll constructors, members, operators and manipulators, mentioned in this man-page, are defined in the namespace FBB.
INHERITS FROM¶
-CONSTRUCTORS¶
- o
- Hostent(hostent const *hostentPtr):
This constructor initializes an @CLASS object from an existing hostent struct. Functions like gethostbyname(3) and gethostbyaddress(3) return pointers to hostent structs.
The default, copy and move constructors are available.
MEMBER FUNCTIONS¶
- o
- size_t addressLength() const:
This member returns the length of the binary addresses in bytes. - o
- size_t addressType() const:
This member returns the type of the address. Currently this is always AF_INET. - o
- char const *alias(size_t index) const:
This member returns alias `index’ of the host. The first alias has index 0. If alias `index’ does not exist, 0 is returned. - o
- char const * const *beginAlias() const:
This member returns an iterator to the first alias. The hostname itself is not included in the list of aliases. - o
- char const *binaryAddress(size_t index) const:
This member returns the binary address `index’ of the host. The first address has index 0. If address `index’ does not exist, 0 is returned. The pointer to the binary address points to a series of addressLength() bytes. Note that the returned address is in network byte order. It can be converted to host byte order by the functions described in byteorder(3). - o
- std::string dottedDecimalAddress(size_t index) const:
This member returns address `index’ as a dotted decimal address in a string. The first address has index 0. If address `index’ does not exist, an empty string is returned. - o
- char const * const *endAlias() const:
This member returns an iterator pointing beyond the last alias. - o
- char const *hostname() const:
This member returns the standard (first) name of the host. - o
- size_t nAddresses() const:
This member returns the number of addresses that are available. When requesting a particular address, the requested index should be less than the value returned by this member. - o
- size_t nAliases() const:
This member returns the number of aliases that are available. When requesting a particular alias, the requested index should be less than the value returned by this member. - o
- void swap(Hostent &other):
The current Hostent object’s contents are swapped with the other object’s contents.
The overloaded assignment operator and the move-aware overloaded assignment operators are available.
EXAMPLE¶
#include <iostream> #include <algorithm> #include <iterator> #include <bobcat/hostent> using namespace std; using namespace FBB; int main(int argc, char **argv) { Hostent he(gethostbyname("localhost")); cout << "The local hostname = " << he.hostname() << endl; cout << "All aliases: " << endl; copy(he.beginAlias(), he.endAlias(), ostream_iterator<char const *>(cout, "\n")); cout << "Addresses:\n"; for (size_t idx = 0; idx < he.nAddresses(); idx++) cout << he.dottedDecimalAddress(idx) << endl; }
FILES¶
bobcat/hostent - defines the class interfaceSEE ALSO¶
bobcat(7)BUGS¶
None Reported.DISTRIBUTION FILES¶
- o
- bobcat_4.08.06-x.dsc: detached signature;
- o
- bobcat_4.08.06-x.tar.gz: source archive;
- o
- bobcat_4.08.06-x_i386.changes: change log;
- o
- libbobcat1_4.08.06-x_*.deb: debian package holding the libraries;
- o
- libbobcat1-dev_4.08.06-x_*.deb: debian package holding the libraries, headers and manual pages;
- o
- http://sourceforge.net/projects/bobcat: public archive location;
BOBCAT¶
Bobcat is an acronym of `Brokken’s Own Base Classes And Templates’.COPYRIGHT¶
This is free software, distributed under the terms of the GNU General Public License (GPL).AUTHOR¶
Frank B. Brokken (f.b.brokken@rug.nl).2005-2018 | libbobcat-dev_4.08.06-x.tar.gz |