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d44e3c4f | 1 | /****************************************************************************** |
2 | * Copyright (c) 2000-2016 Ericsson Telecom AB | |
3 | * All rights reserved. This program and the accompanying materials | |
4 | * are made available under the terms of the Eclipse Public License v1.0 | |
5 | * which accompanies this distribution, and is available at | |
6 | * http://www.eclipse.org/legal/epl-v10.html | |
7 | * | |
8 | * Contributors: | |
9 | * Balasko, Jeno | |
10 | * Beres, Szabolcs | |
11 | * Delic, Adam | |
12 | * Kovacs, Ferenc | |
13 | * Raduly, Csaba | |
14 | * | |
15 | ******************************************************************************/ | |
970ed795 EL |
16 | #include "NetworkHandler.hh" |
17 | ||
18 | #include <stdio.h> | |
19 | #include <string.h> | |
20 | #include <errno.h> | |
21 | ||
22 | #include <sys/types.h> | |
23 | #include <arpa/inet.h> | |
24 | #include <netinet/tcp.h> | |
25 | ||
26 | #include "memory.h" | |
27 | #include "../core/Textbuf.hh" | |
28 | ||
29 | IPAddress::~IPAddress() { } | |
30 | ||
31 | NetworkHandler::NetworkHandler() : m_family(ipv4) { } | |
32 | ||
33 | void NetworkHandler::set_family(const char *p_addr) | |
34 | { | |
35 | if (!p_addr || IPv4Address::is_valid(p_addr)) m_family = ipv4; | |
36 | #if defined(LINUX) || defined(CYGWIN17) | |
37 | else if (IPv6Address::is_valid(p_addr)) m_family = ipv6; | |
38 | #endif | |
39 | else m_family = ipv0; | |
40 | } | |
41 | ||
42 | int NetworkHandler::socket() | |
43 | { | |
44 | return socket(m_family); | |
45 | } | |
46 | ||
47 | int NetworkHandler::socket(const NetworkFamily& p_family) | |
48 | { | |
49 | #if defined(LINUX) || defined(CYGWIN17) | |
50 | return ::socket(p_family == ipv4 ? AF_INET : AF_INET6, SOCK_STREAM, 0); | |
51 | #else | |
52 | (void)p_family; | |
53 | return ::socket(AF_INET, SOCK_STREAM, 0); | |
54 | #endif | |
55 | } | |
56 | ||
57 | HCNetworkHandler::HCNetworkHandler() : m_mc_addr(NULL), m_local_addr(NULL) { } | |
58 | ||
59 | HCNetworkHandler::~HCNetworkHandler() | |
60 | { | |
61 | delete m_mc_addr; | |
62 | delete m_local_addr; | |
63 | } | |
64 | ||
65 | bool HCNetworkHandler::set_local_addr(const char *p_addr, unsigned short p_port) | |
66 | { | |
67 | if (!p_addr) return false; | |
68 | switch (m_family) { | |
69 | case ipv4: m_local_addr = new IPv4Address(p_addr, p_port); break; | |
70 | #if defined(LINUX) || defined(CYGWIN17) | |
71 | case ipv6: m_local_addr = new IPv6Address(p_addr, p_port); break; | |
72 | #endif | |
73 | default: | |
74 | break; | |
75 | } | |
76 | return m_local_addr != NULL; | |
77 | } | |
78 | ||
79 | bool HCNetworkHandler::set_mc_addr(const char *p_addr, unsigned short p_port) | |
80 | { | |
81 | if (!p_addr) return false; | |
82 | switch (m_family) { | |
83 | case ipv4: m_mc_addr = new IPv4Address(p_addr, p_port); break; | |
84 | #if defined(LINUX) || defined(CYGWIN17) | |
85 | case ipv6: m_mc_addr = new IPv6Address(p_addr, p_port); break; | |
86 | #endif | |
87 | default: | |
88 | break; | |
89 | } | |
90 | return m_mc_addr != NULL; | |
91 | } | |
92 | ||
93 | int HCNetworkHandler::getsockname_local_addr(int p_sockfd) | |
94 | { | |
95 | if (m_local_addr != NULL) delete m_local_addr; | |
96 | switch (m_family) { | |
97 | case ipv4: m_local_addr = new IPv4Address(); break; | |
98 | #if defined(LINUX) || defined(CYGWIN17) | |
99 | case ipv6: m_local_addr = new IPv6Address(); break; | |
100 | #endif | |
101 | default: return -1; | |
102 | } | |
103 | return m_local_addr->getsockname(p_sockfd); | |
104 | } | |
105 | ||
106 | int HCNetworkHandler::bind_local_addr(int p_sockfd) const | |
107 | { | |
108 | m_local_addr->set_port(0); | |
109 | return ::bind(p_sockfd, m_local_addr->get_addr(), m_local_addr->get_addr_len()); | |
110 | } | |
111 | ||
112 | #ifdef SOLARIS | |
113 | #define CAST_AWAY_CONST_FOR_SOLARIS6 (sockaddr *) | |
114 | #else | |
115 | #define CAST_AWAY_CONST_FOR_SOLARIS6 | |
116 | #endif | |
117 | ||
118 | int HCNetworkHandler::connect_to_mc(int p_sockfd) const | |
119 | { | |
120 | return ::connect(p_sockfd, CAST_AWAY_CONST_FOR_SOLARIS6 m_mc_addr->get_addr(), | |
121 | m_mc_addr->get_addr_len()); | |
122 | } | |
123 | ||
124 | IPAddress *IPAddress::create_addr(const NetworkFamily& p_family) | |
125 | { | |
126 | switch (p_family) { | |
127 | case ipv4: | |
128 | return new IPv4Address(); | |
129 | #if defined(LINUX) || defined(CYGWIN17) | |
130 | case ipv6: | |
131 | return new IPv6Address(); | |
132 | #endif | |
133 | default: | |
134 | return NULL; | |
135 | } | |
136 | } | |
137 | ||
138 | IPAddress *IPAddress::create_addr(const char *p_addr) | |
139 | { | |
140 | if (p_addr == NULL) | |
141 | return NULL; | |
142 | if (IPv4Address::is_valid(p_addr)) | |
143 | return new IPv4Address(p_addr); | |
144 | #if defined(LINUX) || defined(CYGWIN17) | |
145 | else if (IPv6Address::is_valid(p_addr)) | |
146 | return new IPv6Address(p_addr); | |
147 | #endif | |
148 | else | |
149 | return NULL; | |
150 | } | |
151 | ||
152 | IPv4Address::IPv4Address() | |
153 | { | |
154 | clean_up(); | |
155 | m_addr.sin_family = AF_INET; | |
156 | m_addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
157 | m_addr.sin_port = htons(0); | |
158 | } | |
159 | ||
160 | IPv4Address::IPv4Address(const char *p_addr, unsigned short p_port) | |
161 | { | |
162 | set_addr(p_addr, p_port); | |
163 | } | |
164 | ||
165 | IPv4Address::~IPv4Address() | |
166 | { | |
167 | clean_up(); | |
168 | } | |
169 | ||
170 | bool IPv4Address::is_valid(const char *p_addr) | |
171 | { | |
172 | if (p_addr == NULL) { | |
173 | return false; | |
174 | } else { | |
175 | IPv4Address addr; | |
176 | return addr.set_addr(p_addr); | |
177 | } | |
178 | } | |
179 | ||
180 | bool IPv4Address::is_local() const | |
181 | { | |
182 | // Or: (ntohl(m_addr.sin_addr.s_addr) & 0xff000000u) == 0x7f000000u. | |
183 | return m_addr.sin_addr.s_addr == inet_addr("127.0.0.1"); | |
184 | } | |
185 | ||
186 | bool IPv4Address::set_addr(const char *p_addr, unsigned short p_port) | |
187 | { | |
188 | clean_up(); | |
189 | if (p_addr != NULL) { | |
190 | struct hostent *hptr = gethostbyname(p_addr); | |
191 | if (hptr != NULL && (size_t)hptr->h_length == sizeof(struct in_addr)) { | |
192 | m_addr.sin_family = AF_INET; | |
193 | m_addr.sin_port = htons(p_port); | |
194 | memset(m_addr.sin_zero, 0, sizeof(m_addr.sin_zero)); | |
195 | memcpy(&m_addr.sin_addr, hptr->h_addr_list[0], hptr->h_length); | |
196 | strncpy(m_addr_str, inet_ntoa(m_addr.sin_addr), sizeof(m_addr_str)); | |
197 | strncpy(m_host_str, hptr->h_name, sizeof(m_host_str)); | |
198 | return true; | |
199 | } | |
200 | } | |
201 | return false; | |
202 | } | |
203 | ||
204 | int IPv4Address::accept(int p_sockfd) | |
205 | { | |
206 | clean_up(); | |
207 | socklen_type addrlen = sizeof(m_addr); | |
208 | int fd = ::accept(p_sockfd, (struct sockaddr *)&m_addr, &addrlen); | |
209 | if (fd >= 0) { | |
210 | strncpy(m_addr_str, inet_ntoa(m_addr.sin_addr), sizeof(m_addr_str)); | |
211 | if (m_addr.sin_addr.s_addr != htonl(INADDR_ANY)) { | |
212 | struct hostent *hptr = | |
213 | gethostbyaddr((const char *)&m_addr.sin_addr, | |
214 | sizeof(m_addr.sin_addr), m_addr.sin_family); | |
215 | if (hptr != NULL && (size_t)hptr->h_length == sizeof(struct in_addr)) { | |
216 | strncpy(m_host_str, hptr->h_name, sizeof(m_host_str)); | |
217 | } | |
218 | } | |
219 | } | |
220 | return fd; | |
221 | } | |
222 | ||
223 | int IPv4Address::getsockname(int p_sockfd) | |
224 | { | |
225 | clean_up(); | |
226 | socklen_type addrlen = sizeof(m_addr); | |
227 | int s = ::getsockname(p_sockfd, (struct sockaddr *)&m_addr, &addrlen); | |
228 | if (s >= 0) { | |
229 | strncpy(m_addr_str, inet_ntoa(m_addr.sin_addr), sizeof(m_addr_str)); | |
230 | if (m_addr.sin_addr.s_addr != htonl(INADDR_ANY)) { | |
231 | struct hostent *hptr = | |
232 | gethostbyaddr((const char *)&m_addr.sin_addr, | |
233 | sizeof(m_addr.sin_addr), m_addr.sin_family); | |
234 | if (hptr != NULL && (size_t)hptr->h_length == sizeof(struct in_addr)) { | |
235 | strncpy(m_host_str, hptr->h_name, sizeof(m_host_str)); | |
236 | } | |
237 | } | |
238 | } | |
239 | return s; | |
240 | } | |
241 | ||
242 | bool IPv4Address::operator==(const IPAddress& p_addr) const | |
243 | { | |
244 | return memcmp(&m_addr.sin_addr, &(((const IPv4Address&)p_addr).m_addr.sin_addr), sizeof(m_addr.sin_addr)) == 0; | |
245 | } | |
246 | ||
247 | bool IPv4Address::operator!=(const IPAddress& p_addr) const | |
248 | { | |
249 | return !(*this == p_addr); | |
250 | } | |
251 | ||
252 | IPAddress& IPv4Address::operator=(const IPAddress& p_addr) | |
253 | { | |
254 | clean_up(); | |
255 | memcpy(&m_addr, &((const IPv4Address&)p_addr).m_addr, sizeof(m_addr)); | |
256 | strncpy(m_host_str, ((const IPv4Address&)p_addr).m_host_str, sizeof(m_host_str)); | |
257 | strncpy(m_addr_str, ((const IPv4Address&)p_addr).m_addr_str, sizeof(m_addr_str)); | |
258 | return *this; | |
259 | } | |
260 | ||
261 | void IPv4Address::push_raw(Text_Buf& p_buf) const | |
262 | { | |
263 | p_buf.push_raw(sizeof(m_addr.sin_family), &m_addr.sin_family); | |
264 | p_buf.push_raw(sizeof(m_addr.sin_port), &m_addr.sin_port); | |
265 | p_buf.push_raw(sizeof(m_addr.sin_addr), &m_addr.sin_addr); | |
266 | p_buf.push_raw(sizeof(m_addr.sin_zero), &m_addr.sin_zero); | |
267 | } | |
268 | ||
269 | void IPv4Address::pull_raw(Text_Buf& p_buf) | |
270 | { | |
271 | clean_up(); | |
272 | p_buf.pull_raw(sizeof(m_addr.sin_family), &m_addr.sin_family); | |
273 | p_buf.pull_raw(sizeof(m_addr.sin_port), &m_addr.sin_port); | |
274 | p_buf.pull_raw(sizeof(m_addr.sin_addr), &m_addr.sin_addr); | |
275 | p_buf.pull_raw(sizeof(m_addr.sin_zero), &m_addr.sin_zero); | |
276 | } | |
277 | ||
278 | void IPv4Address::clean_up() | |
279 | { | |
280 | memset(&m_addr, 0, sizeof(m_addr)); | |
281 | memset(m_host_str, 0, sizeof(m_host_str)); | |
282 | memset(m_addr_str, 0, sizeof(m_addr_str)); | |
283 | } | |
284 | ||
285 | #if defined(LINUX) || defined(CYGWIN17) | |
286 | IPv6Address::IPv6Address() | |
287 | { | |
288 | clean_up(); | |
289 | m_addr.sin6_family = AF_INET6; | |
290 | m_addr.sin6_addr = in6addr_any; | |
291 | m_addr.sin6_port = htons(0); | |
292 | } | |
293 | ||
294 | IPv6Address::IPv6Address(const char *p_addr, unsigned short p_port) | |
295 | { | |
296 | set_addr(p_addr, p_port); | |
297 | } | |
298 | ||
299 | IPv6Address::~IPv6Address() | |
300 | { | |
301 | clean_up(); | |
302 | } | |
303 | ||
304 | const char *IPv6Address::get_addr_str() const | |
305 | { | |
306 | if (strlen(m_addr_str) > 0) { | |
307 | // The host name should always contain the interface's name for link-local addresses. | |
308 | return (strlen(m_host_str) > 0 && strstr(m_host_str, "%") != NULL) ? m_host_str : m_addr_str; | |
309 | } else { | |
310 | return m_host_str; | |
311 | } | |
312 | } | |
313 | ||
314 | bool IPv6Address::set_addr(const char *p_addr, unsigned short p_port) | |
315 | { | |
316 | clean_up(); | |
317 | struct addrinfo hints, *res; | |
318 | memset(&hints, 0, sizeof(struct addrinfo)); | |
319 | hints.ai_flags = AI_CANONNAME | AI_PASSIVE; | |
320 | hints.ai_family = AF_INET6; | |
321 | hints.ai_socktype = SOCK_STREAM; | |
322 | hints.ai_protocol = 0; // Any. | |
323 | char p_port_str[6]; | |
324 | memset(p_port_str, 0, sizeof(p_port_str)); | |
325 | snprintf(p_port_str, sizeof(p_port_str), "%u", p_port); | |
326 | int s = getaddrinfo(p_addr, p_port_str, &hints, &res); | |
327 | if (s == 0) { | |
328 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)(void*)res->ai_addr; | |
329 | // The (void*) shuts up the "cast increases required alignment" warning. | |
330 | // Hopefully, the res->ai_addr points to a properly aligned sockaddr_in6 | |
331 | // and we won't have problems like these if we decide to support Sparc: | |
332 | // http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=340384 | |
333 | memcpy(&m_addr, addr, sizeof(m_addr)); | |
334 | m_addr.sin6_port = htons(p_port); | |
335 | inet_ntop(res->ai_family, &(addr->sin6_addr), m_addr_str, sizeof(m_addr_str)); | |
336 | strncpy(m_host_str, res->ai_canonname, sizeof(m_host_str)); | |
337 | freeaddrinfo(res); | |
338 | return true; | |
339 | } | |
340 | return false; | |
341 | } | |
342 | ||
343 | int IPv6Address::accept(int p_sockfd) | |
344 | { | |
345 | clean_up(); | |
346 | socklen_type addrlen = sizeof(m_addr); | |
347 | int fd = ::accept(p_sockfd, (struct sockaddr *)&m_addr, &addrlen); | |
348 | if (fd >= 0) { | |
349 | if (!inet_ntop(AF_INET6, &m_addr.sin6_addr, m_addr_str, sizeof(m_addr_str))) { | |
350 | fprintf(stderr, "IPv6Address::accept(): Unable to convert IPv6 address " | |
351 | "from binary to text form: %s\n", strerror(errno)); | |
352 | } | |
353 | int s = getnameinfo((struct sockaddr *)&m_addr, sizeof(m_addr), | |
354 | m_host_str, sizeof(m_host_str), NULL, 0, 0); | |
355 | if (s != 0) { | |
356 | fprintf(stderr, "IPv6Address::accept(): Address to name translation " | |
357 | "failed: %s\n", gai_strerror(s)); | |
358 | } | |
359 | } | |
360 | return fd; | |
361 | } | |
362 | ||
363 | int IPv6Address::getsockname(int p_sockfd) | |
364 | { | |
365 | clean_up(); | |
366 | socklen_type addrlen = sizeof(m_addr); | |
367 | int s1 = ::getsockname(p_sockfd, (struct sockaddr *)&m_addr, &addrlen); | |
368 | if (s1 >= 0) { | |
369 | if (!inet_ntop(AF_INET6, &m_addr.sin6_addr, m_addr_str, sizeof(m_addr_str))) { | |
370 | fprintf(stderr, "IPv6Address::getsockname(): Unable to convert IPv6 " | |
371 | "address from binary to text form: %s\n", strerror(errno)); | |
372 | } | |
373 | int s2 = getnameinfo((struct sockaddr *)&m_addr, sizeof(m_addr), | |
374 | m_host_str, sizeof(m_host_str), NULL, 0, 0); | |
375 | if (s2 != 0) { | |
376 | fprintf(stderr, "IPv6Address::getsockname(): Address to name " | |
377 | "translation failed: %s\n", gai_strerror(s2)); | |
378 | } | |
379 | } | |
380 | return s1; | |
381 | } | |
382 | ||
383 | bool IPv6Address::operator==(const IPAddress& p_addr) const | |
384 | { | |
385 | return memcmp(&m_addr.sin6_addr, &(((const IPv6Address&)p_addr).m_addr.sin6_addr), sizeof(m_addr.sin6_addr)) == 0; | |
386 | } | |
387 | ||
388 | bool IPv6Address::operator!=(const IPAddress& p_addr) const | |
389 | { | |
390 | return !(*this == p_addr); | |
391 | } | |
392 | ||
393 | IPAddress& IPv6Address::operator=(const IPAddress& p_addr) | |
394 | { | |
395 | clean_up(); | |
396 | memcpy(&m_addr, &((const IPv6Address&)p_addr).m_addr, sizeof(m_addr)); | |
397 | strncpy(m_host_str, ((const IPv6Address&)p_addr).m_host_str, sizeof(m_host_str)); | |
398 | strncpy(m_addr_str, ((const IPv6Address&)p_addr).m_addr_str, sizeof(m_addr_str)); | |
399 | return *this; | |
400 | } | |
401 | ||
402 | void IPv6Address::push_raw(Text_Buf& p_buf) const | |
403 | { | |
404 | p_buf.push_raw(sizeof(m_addr.sin6_family), &m_addr.sin6_family); | |
405 | p_buf.push_raw(sizeof(m_addr.sin6_port), &m_addr.sin6_port); | |
406 | p_buf.push_raw(sizeof(m_addr.sin6_flowinfo), &m_addr.sin6_flowinfo); | |
407 | p_buf.push_raw(sizeof(m_addr.sin6_addr), &m_addr.sin6_addr); | |
408 | p_buf.push_raw(sizeof(m_addr.sin6_scope_id), &m_addr.sin6_scope_id); | |
409 | } | |
410 | ||
411 | void IPv6Address::pull_raw(Text_Buf& p_buf) | |
412 | { | |
413 | clean_up(); | |
414 | p_buf.pull_raw(sizeof(m_addr.sin6_family), &m_addr.sin6_family); | |
415 | p_buf.pull_raw(sizeof(m_addr.sin6_port), &m_addr.sin6_port); | |
416 | p_buf.pull_raw(sizeof(m_addr.sin6_flowinfo), &m_addr.sin6_flowinfo); | |
417 | p_buf.pull_raw(sizeof(m_addr.sin6_addr), &m_addr.sin6_addr); | |
418 | p_buf.pull_raw(sizeof(m_addr.sin6_scope_id), &m_addr.sin6_scope_id); | |
419 | } | |
420 | ||
421 | void IPv6Address::clean_up() | |
422 | { | |
423 | memset(&m_addr, 0, sizeof(m_addr)); | |
424 | memset(m_host_str, 0, sizeof(m_host_str)); | |
425 | memset(m_addr_str, 0, sizeof(m_addr_str)); | |
426 | } | |
427 | ||
428 | bool IPv6Address::is_local() const | |
429 | { | |
430 | const unsigned char localhost_bytes[] = | |
431 | { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; | |
432 | const unsigned char mapped_ipv4_localhost[] = | |
433 | { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0x7f, 0, 0, 1 }; | |
434 | ||
435 | return (memcmp(m_addr.sin6_addr.s6_addr, localhost_bytes, 16) == 0 | |
436 | || memcmp(m_addr.sin6_addr.s6_addr, mapped_ipv4_localhost, 16) == 0); | |
437 | } | |
438 | ||
439 | bool IPv6Address::is_valid(const char *p_addr) | |
440 | { | |
441 | if (p_addr == NULL) { | |
442 | return false; | |
443 | } else { | |
444 | IPv6Address addr; | |
445 | return addr.set_addr(p_addr); | |
446 | } | |
447 | } | |
448 | #endif // LINUX || CYGWIN17 |