c%2B%2B/socket%2B%2B-1.10/sockinet.C

// sockinet.C  -*- C++ -*- socket library
// Copyright (C) 1992,1993,1994 Gnanasekaran Swaminathan <gs4t@virginia.edu>
// 
// Permission is granted to use at your own risk and distribute this software
// in source and binary forms provided the above copyright
// notice and this paragraph are preserved on all copies.
// This software is provided "as is" with no express or implied warranty.
//
// Version: 17Oct95 1.10

#include <config.h>
#include <sockinet.h>

EXTERN_C_BEGIN
#include <netdb.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
EXTERN_C_END

void    herror(const char*);

sockinetaddr::sockinetaddr () 
{
  sin_family      = sockinetbuf::af_inet;
  sin_addr.s_addr = htonl(INADDR_ANY);
  sin_port        = 0;
}

sockinetaddr::sockinetaddr(unsigned long addr, int port_no)
// addr and port_no are in host byte order
{
  sin_family      = sockinetbuf::af_inet;
  sin_addr.s_addr = htonl(addr);
  sin_port      = htons(port_no);
}

sockinetaddr::sockinetaddr(unsigned long addr, const char* sn, const char* pn)
// addr is in host byte order
{
  sin_family      = sockinetbuf::af_inet;
  sin_addr.s_addr = htonl (addr); // Added by cgay@cs.uoregon.edu May 29, 1993
  setport(sn, pn);
}

sockinetaddr::sockinetaddr (const char* host_name, int port_no)
// port_no is in host byte order
{
  setaddr(host_name);
  sin_port = htons(port_no);
}

sockinetaddr::sockinetaddr(const char* hn, const char* sn, const char* pn)
{
  setaddr(hn);
  setport(sn, pn);
}

sockinetaddr::sockinetaddr (const sockinetaddr& sina)
{
  sin_family      = sockinetbuf::af_inet;
  sin_addr.s_addr = sina.sin_addr.s_addr;
  sin_port      = sina.sin_port;
}   

void sockinetaddr::setport(const char* sn, const char* pn)
{
  servent* sp = getservbyname(sn, pn);
  if (sp == 0) {
    perror(sn);
    error ("sockinetaddr: invalid service name");
    exit(1);
  }
  sin_port = sp->s_port;
}

int sockinetaddr::getport () const
{
  return ntohs (sin_port);
}

void sockinetaddr::setaddr(const char* host_name)
{
  if ( (sin_addr.s_addr = inet_addr(host_name)) == -1) {
    hostent* hp = gethostbyname(host_name);
    if (hp == 0) {
      herror("sockinetaddr::sockinetaddr");
      exit(1);
    }
    memcpy(&sin_addr, hp->h_addr, hp->h_length);
    sin_family = hp->h_addrtype;
  }else
    sin_family = sockinetbuf::af_inet;
}

const char* sockinetaddr::gethostname () const
{
  if (sin_addr.s_addr == htonl(INADDR_ANY)) {
    static char hostname[64];
    if (::gethostname(hostname, 63) == -1) {
      perror("in sockinetaddr::gethostname");
      return "";
    }
    return hostname;            
  }
  
  hostent* hp = gethostbyaddr((const char*) &sin_addr,
                              sizeof(sin_addr),
                              family());
  if (hp == 0) {
    herror("sockinetaddr::gethostname");
    return "";
  }
  if (hp->h_name) return hp->h_name;
  return "";
}

sockinetbuf::sockinetbuf(sockbuf::type ty, int proto)
  : sockbuf(af_inet, ty, proto)
{}

sockinetbuf& sockinetbuf::operator = (const sockbuf& si)
{
  this->sockbuf::operator = (si);
  return *this;
  
}

sockinetbuf& sockinetbuf::operator = (const sockinetbuf& si)
{
  this->sockbuf::operator = (si);
  return *this;
}

sockbuf* sockinetbuf::open(sockbuf::type st, int proto)
{
  *this = sockinetbuf(st, proto);
  return this;
}

sockinetaddr sockinetbuf::localaddr() const
{
  sockinetaddr sin;
  int len = sin.size();
  if (::getsockname(rep->sock, sin.addr (), &len) == -1)
    perror("sockinetbuf::localaddr()");
  return sin;
}

int sockinetbuf::localport() const
{
  sockinetaddr sin = localaddr();
  if (sin.family() != af_inet) return -1;
  return sin.getport();
}

const char* sockinetbuf::localhost() const
{
  sockinetaddr sin = localaddr();
  if (sin.family() != af_inet) return "";
  return sin.gethostname();
}


sockinetaddr sockinetbuf::peeraddr() const
{
  sockinetaddr sin;
  int len = sin.size();
  if (::getpeername(rep->sock, sin.addr (), &len) == -1)
    perror("sockinetbuf::peeraddr()");
  return sin;
}

int sockinetbuf::peerport() const
{
  sockinetaddr sin = peeraddr();
  if (sin.family() != af_inet) return -1;
  return sin.getport();
}

const char* sockinetbuf::peerhost() const
{
  sockinetaddr sin = peeraddr();
  if (sin.family() != af_inet) return "";
  return sin.gethostname();
}

int sockinetbuf::bind_until_success (int portno)
// a. bind to (INADDR_ANY, portno)
// b. if success return 0
// c. if failure and errno is EADDRINUSE, portno++ and go to step a.
// d. return errno.
{
  for (;;) {
    sockinetaddr sa ((unsigned long) INADDR_ANY, portno++);
    int eno = bind (sa);
    if (eno == 0)
      return 0;
    if (eno != EADDRINUSE)
      return eno;
  }
}

int sockinetbuf::bind (sockAddr& sa)
{
  return sockbuf::bind (sa);
}

int sockinetbuf::bind ()
{
  sockinetaddr sa;
  return bind (sa);
}

int sockinetbuf::bind (unsigned long addr, int port_no)
// address and portno are in host byte order
{
  sockinetaddr sa (addr, port_no);
  return bind (sa);
}

int sockinetbuf::bind (const char* host_name, int port_no)
{
  sockinetaddr sa (host_name, port_no);
  return bind (sa);
}

int sockinetbuf::bind (unsigned long addr,
                       const char* service_name,
                       const char* protocol_name)
{
  sockinetaddr sa (addr, service_name, protocol_name);
  return bind (sa);
}

int sockinetbuf::bind (const char* host_name,
                       const char* service_name,
                       const char* protocol_name)
{
  sockinetaddr sa (host_name, service_name, protocol_name);
  return bind (sa);
}

int sockinetbuf::connect (sockAddr& sa)
{
  return sockbuf::connect (sa);
}

int sockinetbuf::connect (unsigned long addr, int port_no)
// address and portno are in host byte order
{
  sockinetaddr sa (addr, port_no);
  return connect (sa);
}

int sockinetbuf::connect (const char* host_name, int port_no)
{
  sockinetaddr sa (host_name, port_no);
  return connect (sa);
}

int sockinetbuf::connect (unsigned long addr,
                          const char* service_name,
                          const char* protocol_name)
{
  sockinetaddr sa (addr, service_name, protocol_name);
  return connect (sa);
}

int sockinetbuf::connect (const char* host_name,
                          const char* service_name,
                          const char* protocol_name)
{
  sockinetaddr sa (host_name, service_name, protocol_name);
  return connect (sa);
}

isockinet::isockinet (sockbuf::type ty, int proto)
  : ios (new sockinetbuf (ty, proto))
{}

isockinet::isockinet (const sockbuf& sb)
  : ios (new sockinetbuf (sb))
{}

isockinet::~isockinet ()
{
  delete ios::rdbuf ();
  init (0);
}

osockinet::osockinet (sockbuf::type ty, int proto)
  : ios (new sockinetbuf (ty, proto))
{}

osockinet::osockinet (const sockbuf& sb)
  : ios (new sockinetbuf (sb))
{}

osockinet::~osockinet ()
{
  delete ios::rdbuf ();
  init (0);
}

iosockinet::iosockinet (sockbuf::type ty, int proto)
  : ios (new sockinetbuf (ty, proto))
{}

iosockinet::iosockinet (const sockbuf& sb)
  : ios (new sockinetbuf (sb))
{}

iosockinet::~iosockinet ()
{
  delete ios::rdbuf ();
  init (0);
}

#if !defined (__linux__)

extern "C" int h_errno;
static  char* errmsg[] = {
  ": No error\n",
  ": Host not found\n",
  ": Try again\n",
  ": No recovery\n",            
  ": No address\n"
  ": Unknown error\n"
};
void herror(const char* em)
{
  if (h_errno > 5) h_errno = 5;
  cerr << em << errmsg[h_errno];
}

#endif // !__linux__
Revision:	1.1
Committed:	Mon Feb 26 15:01:39 2001 UTC (23 years, 9 months ago) by ab11
Content type:	text/plain
Branch:	MAIN
CVS Tags:	PROJECT_COMPLETION
Log Message:	Networking class. Assumed to be bug free.
#	User	Rev	Content
1	ab11	1.1	// sockinet.C -- C++ -- socket library
2			// Copyright (C) 1992,1993,1994 Gnanasekaran Swaminathan <gs4t@virginia.edu>
3			//
4			// Permission is granted to use at your own risk and distribute this software
5			// in source and binary forms provided the above copyright
6			// notice and this paragraph are preserved on all copies.
7			// This software is provided "as is" with no express or implied warranty.
8			//
9			// Version: 17Oct95 1.10
10
11			#include <config.h>
12			#include <sockinet.h>
13
14			EXTERN_C_BEGIN
15			#include <netdb.h>
16			#include <sys/time.h>
17			#include <sys/socket.h>
18			#include <stdlib.h>
19			#include <unistd.h>
20			#include <errno.h>
21			EXTERN_C_END
22
23			void herror(const char*);
24
25			sockinetaddr::sockinetaddr ()
26			{
27			sin_family = sockinetbuf::af_inet;
28			sin_addr.s_addr = htonl(INADDR_ANY);
29			sin_port = 0;
30			}
31
32			sockinetaddr::sockinetaddr(unsigned long addr, int port_no)
33			// addr and port_no are in host byte order
34			{
35			sin_family = sockinetbuf::af_inet;
36			sin_addr.s_addr = htonl(addr);
37			sin_port = htons(port_no);
38			}
39
40			sockinetaddr::sockinetaddr(unsigned long addr, const char* sn, const char* pn)
41			// addr is in host byte order
42			{
43			sin_family = sockinetbuf::af_inet;
44			sin_addr.s_addr = htonl (addr); // Added by cgay@cs.uoregon.edu May 29, 1993
45			setport(sn, pn);
46			}
47
48			sockinetaddr::sockinetaddr (const char* host_name, int port_no)
49			// port_no is in host byte order
50			{
51			setaddr(host_name);
52			sin_port = htons(port_no);
53			}
54
55			sockinetaddr::sockinetaddr(const char* hn, const char* sn, const char* pn)
56			{
57			setaddr(hn);
58			setport(sn, pn);
59			}
60
61			sockinetaddr::sockinetaddr (const sockinetaddr& sina)
62			{
63			sin_family = sockinetbuf::af_inet;
64			sin_addr.s_addr = sina.sin_addr.s_addr;
65			sin_port = sina.sin_port;
66			}
67
68			void sockinetaddr::setport(const char* sn, const char* pn)
69			{
70			servent* sp = getservbyname(sn, pn);
71			if (sp == 0) {
72			perror(sn);
73			error ("sockinetaddr: invalid service name");
74			exit(1);
75			}
76			sin_port = sp->s_port;
77			}
78
79			int sockinetaddr::getport () const
80			{
81			return ntohs (sin_port);
82			}
83
84			void sockinetaddr::setaddr(const char* host_name)
85			{
86			if ( (sin_addr.s_addr = inet_addr(host_name)) == -1) {
87			hostent* hp = gethostbyname(host_name);
88			if (hp == 0) {
89			herror("sockinetaddr::sockinetaddr");
90			exit(1);
91			}
92			memcpy(&sin_addr, hp->h_addr, hp->h_length);
93			sin_family = hp->h_addrtype;
94			}else
95			sin_family = sockinetbuf::af_inet;
96			}
97
98			const char* sockinetaddr::gethostname () const
99			{
100			if (sin_addr.s_addr == htonl(INADDR_ANY)) {
101			static char hostname[64];
102			if (::gethostname(hostname, 63) == -1) {
103			perror("in sockinetaddr::gethostname");
104			return "";
105			}
106			return hostname;
107			}
108
109			hostent* hp = gethostbyaddr((const char*) &sin_addr,
110			sizeof(sin_addr),
111			family());
112			if (hp == 0) {
113			herror("sockinetaddr::gethostname");
114			return "";
115			}
116			if (hp->h_name) return hp->h_name;
117			return "";
118			}
119
120			sockinetbuf::sockinetbuf(sockbuf::type ty, int proto)
121			: sockbuf(af_inet, ty, proto)
122			{}
123
124			sockinetbuf& sockinetbuf::operator = (const sockbuf& si)
125			{
126			this->sockbuf::operator = (si);
127			return *this;
128
129			}
130
131			sockinetbuf& sockinetbuf::operator = (const sockinetbuf& si)
132			{
133			this->sockbuf::operator = (si);
134			return *this;
135			}
136
137			sockbuf* sockinetbuf::open(sockbuf::type st, int proto)
138			{
139			*this = sockinetbuf(st, proto);
140			return this;
141			}
142
143			sockinetaddr sockinetbuf::localaddr() const
144			{
145			sockinetaddr sin;
146			int len = sin.size();
147			if (::getsockname(rep->sock, sin.addr (), &len) == -1)
148			perror("sockinetbuf::localaddr()");
149			return sin;
150			}
151
152			int sockinetbuf::localport() const
153			{
154			sockinetaddr sin = localaddr();
155			if (sin.family() != af_inet) return -1;
156			return sin.getport();
157			}
158
159			const char* sockinetbuf::localhost() const
160			{
161			sockinetaddr sin = localaddr();
162			if (sin.family() != af_inet) return "";
163			return sin.gethostname();
164			}
165
166
167			sockinetaddr sockinetbuf::peeraddr() const
168			{
169			sockinetaddr sin;
170			int len = sin.size();
171			if (::getpeername(rep->sock, sin.addr (), &len) == -1)
172			perror("sockinetbuf::peeraddr()");
173			return sin;
174			}
175
176			int sockinetbuf::peerport() const
177			{
178			sockinetaddr sin = peeraddr();
179			if (sin.family() != af_inet) return -1;
180			return sin.getport();
181			}
182
183			const char* sockinetbuf::peerhost() const
184			{
185			sockinetaddr sin = peeraddr();
186			if (sin.family() != af_inet) return "";
187			return sin.gethostname();
188			}
189
190			int sockinetbuf::bind_until_success (int portno)
191			// a. bind to (INADDR_ANY, portno)
192			// b. if success return 0
193			// c. if failure and errno is EADDRINUSE, portno++ and go to step a.
194			// d. return errno.
195			{
196			for (;;) {
197			sockinetaddr sa ((unsigned long) INADDR_ANY, portno++);
198			int eno = bind (sa);
199			if (eno == 0)
200			return 0;
201			if (eno != EADDRINUSE)
202			return eno;
203			}
204			}
205
206			int sockinetbuf::bind (sockAddr& sa)
207			{
208			return sockbuf::bind (sa);
209			}
210
211			int sockinetbuf::bind ()
212			{
213			sockinetaddr sa;
214			return bind (sa);
215			}
216
217			int sockinetbuf::bind (unsigned long addr, int port_no)
218			// address and portno are in host byte order
219			{
220			sockinetaddr sa (addr, port_no);
221			return bind (sa);
222			}
223
224			int sockinetbuf::bind (const char* host_name, int port_no)
225			{
226			sockinetaddr sa (host_name, port_no);
227			return bind (sa);
228			}
229
230			int sockinetbuf::bind (unsigned long addr,
231			const char* service_name,
232			const char* protocol_name)
233			{
234			sockinetaddr sa (addr, service_name, protocol_name);
235			return bind (sa);
236			}
237
238			int sockinetbuf::bind (const char* host_name,
239			const char* service_name,
240			const char* protocol_name)
241			{
242			sockinetaddr sa (host_name, service_name, protocol_name);
243			return bind (sa);
244			}
245
246			int sockinetbuf::connect (sockAddr& sa)
247			{
248			return sockbuf::connect (sa);
249			}
250
251			int sockinetbuf::connect (unsigned long addr, int port_no)
252			// address and portno are in host byte order
253			{
254			sockinetaddr sa (addr, port_no);
255			return connect (sa);
256			}
257
258			int sockinetbuf::connect (const char* host_name, int port_no)
259			{
260			sockinetaddr sa (host_name, port_no);
261			return connect (sa);
262			}
263
264			int sockinetbuf::connect (unsigned long addr,
265			const char* service_name,
266			const char* protocol_name)
267			{
268			sockinetaddr sa (addr, service_name, protocol_name);
269			return connect (sa);
270			}
271
272			int sockinetbuf::connect (const char* host_name,
273			const char* service_name,
274			const char* protocol_name)
275			{
276			sockinetaddr sa (host_name, service_name, protocol_name);
277			return connect (sa);
278			}
279
280			isockinet::isockinet (sockbuf::type ty, int proto)
281			: ios (new sockinetbuf (ty, proto))
282			{}
283
284			isockinet::isockinet (const sockbuf& sb)
285			: ios (new sockinetbuf (sb))
286			{}
287
288			isockinet::~isockinet ()
289			{
290			delete ios::rdbuf ();
291			init (0);
292			}
293
294			osockinet::osockinet (sockbuf::type ty, int proto)
295			: ios (new sockinetbuf (ty, proto))
296			{}
297
298			osockinet::osockinet (const sockbuf& sb)
299			: ios (new sockinetbuf (sb))
300			{}
301
302			osockinet::~osockinet ()
303			{
304			delete ios::rdbuf ();
305			init (0);
306			}
307
308			iosockinet::iosockinet (sockbuf::type ty, int proto)
309			: ios (new sockinetbuf (ty, proto))
310			{}
311
312			iosockinet::iosockinet (const sockbuf& sb)
313			: ios (new sockinetbuf (sb))
314			{}
315
316			iosockinet::~iosockinet ()
317			{
318			delete ios::rdbuf ();
319			init (0);
320			}
321
322			#if !defined (__linux__)
323
324			extern "C" int h_errno;
325			static char* errmsg[] = {
326			": No error\n",
327			": Host not found\n",
328			": Try again\n",
329			": No recovery\n",
330			": No address\n"
331			": Unknown error\n"
332			};
333			void herror(const char* em)
334			{
335			if (h_errno > 5) h_errno = 5;
336			cerr << em << errmsg[h_errno];
337			}
338
339			#endif // !__linux__