Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 1 | // Copyright (C) 1999-2005 Open Source Telecom Corporation. |
| 2 | // Copyright (C) 2006-2010 David Sugar, Tycho Softworks. |
| 3 | // |
| 4 | // This program is free software; you can redistribute it and/or modify |
| 5 | // it under the terms of the GNU General Public License as published by |
| 6 | // the Free Software Foundation; either version 2 of the License, or |
| 7 | // (at your option) any later version. |
| 8 | // |
| 9 | // This program is distributed in the hope that it will be useful, |
| 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | // GNU General Public License for more details. |
| 13 | // |
| 14 | // You should have received a copy of the GNU General Public License |
| 15 | // along with this program; if not, write to the Free Software |
| 16 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | // |
| 18 | // As a special exception, you may use this file as part of a free software |
| 19 | // library without restriction. Specifically, if other files instantiate |
| 20 | // templates or use macros or inline functions from this file, or you compile |
| 21 | // this file and link it with other files to produce an executable, this |
| 22 | // file does not by itself cause the resulting executable to be covered by |
| 23 | // the GNU General Public License. This exception does not however |
| 24 | // invalidate any other reasons why the executable file might be covered by |
| 25 | // the GNU General Public License. |
| 26 | // |
| 27 | // This exception applies only to the code released under the name GNU |
| 28 | // Common C++. If you copy code from other releases into a copy of GNU |
| 29 | // Common C++, as the General Public License permits, the exception does |
| 30 | // not apply to the code that you add in this way. To avoid misleading |
| 31 | // anyone as to the status of such modified files, you must delete |
| 32 | // this exception notice from them. |
| 33 | // |
| 34 | // If you write modifications of your own for GNU Common C++, it is your choice |
| 35 | // whether to permit this exception to apply to your modifications. |
| 36 | // If you do not wish that, delete this exception notice. |
| 37 | // |
| 38 | |
| 39 | #include <cc++/config.h> |
| 40 | #include <cc++/export.h> |
| 41 | #include <cc++/address.h> |
| 42 | #include "private.h" |
| 43 | #include <cstdlib> |
| 44 | |
| 45 | #ifdef CCXX_NAMESPACES |
| 46 | namespace ost { |
| 47 | #endif |
| 48 | |
| 49 | #ifndef WIN32 |
| 50 | Mutex IPV4Address::mutex; |
| 51 | #endif |
| 52 | |
| 53 | IPV4Host IPV4Host::_host_; |
| 54 | |
| 55 | const IPV4MulticastValidator IPV4Multicast::validator; |
| 56 | |
| 57 | void IPV4MulticastValidator::operator()(const in_addr address) const |
| 58 | { |
| 59 | #ifdef CCXX_EXCEPTIONS |
| 60 | // "0.0.0.0" is always accepted, as it is an "empty" address. |
| 61 | if ( (address.s_addr != INADDR_ANY) && |
| 62 | (address.s_addr & MCAST_VALID_MASK) != MCAST_VALID_VALUE ) { |
| 63 | throw "Multicast address not in the valid range: from 224.0.0.1 through 239.255.255.255"; |
| 64 | } |
| 65 | #endif |
| 66 | } |
| 67 | |
| 68 | IPV4Address::IPV4Address(const IPV4Validator *_validator) |
| 69 | : validator(_validator), ipaddr(NULL), addr_count(0), hostname(NULL) { |
| 70 | *this = (long unsigned int)INADDR_ANY; |
| 71 | } |
| 72 | |
| 73 | IPV4Address::IPV4Address(const char *address, const IPV4Validator *_validator) : |
| 74 | validator(_validator), ipaddr(NULL), addr_count(0), hostname(NULL) { |
| 75 | if ( this->validator ) |
| 76 | this->validator = validator; |
| 77 | if(address == 0 || !strcmp(address, "*")) |
| 78 | setAddress(NULL); |
| 79 | else |
| 80 | setAddress(address); |
| 81 | } |
| 82 | |
| 83 | IPV4Address::IPV4Address(struct in_addr addr, const IPV4Validator *_validator) : |
| 84 | validator(_validator), ipaddr(NULL), hostname(NULL) { |
| 85 | if ( this->validator ){ |
| 86 | this->validator = validator; |
| 87 | (*validator)(addr); |
| 88 | } |
| 89 | addr_count = 1; |
| 90 | ipaddr = new struct in_addr[1]; |
| 91 | ipaddr[0] = addr; |
| 92 | } |
| 93 | |
| 94 | IPV4Address::IPV4Address(const IPV4Address &rhs) : |
| 95 | validator(rhs.validator), addr_count(rhs.addr_count), hostname(NULL) |
| 96 | { |
| 97 | ipaddr = new struct in_addr[addr_count]; |
| 98 | memcpy(ipaddr, rhs.ipaddr, sizeof(struct in_addr) * addr_count); |
| 99 | } |
| 100 | |
| 101 | IPV4Address::~IPV4Address() |
| 102 | { |
| 103 | if(ipaddr) { |
| 104 | delete[] ipaddr; |
| 105 | ipaddr = NULL; |
| 106 | } |
| 107 | if(hostname) { |
| 108 | delString(hostname); |
| 109 | hostname = NULL; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | struct in_addr IPV4Address::getAddress(void) const |
| 114 | { |
| 115 | return ipaddr[0]; |
| 116 | } |
| 117 | |
| 118 | struct in_addr IPV4Address::getAddress(size_t i) const |
| 119 | { |
| 120 | return (i < addr_count ? ipaddr[i] : ipaddr[0]); |
| 121 | } |
| 122 | |
| 123 | bool IPV4Address::isInetAddress(void) const |
| 124 | { |
| 125 | struct in_addr addr; |
| 126 | memset(&addr, 0, sizeof(addr)); |
| 127 | if(memcmp(&addr, &ipaddr[0], sizeof(addr))) |
| 128 | return true; |
| 129 | return false; |
| 130 | } |
| 131 | |
| 132 | IPV4Address &IPV4Address::operator=(const char *str) |
| 133 | { |
| 134 | if(str == 0 || !strcmp(str, "*")) |
| 135 | str = "0.0.0.0"; |
| 136 | |
| 137 | setAddress(str); |
| 138 | |
| 139 | return *this; |
| 140 | } |
| 141 | |
| 142 | IPV4Address &IPV4Address::operator=(struct in_addr addr) |
| 143 | { |
| 144 | if(ipaddr) |
| 145 | delete[] ipaddr; |
| 146 | if ( validator ) |
| 147 | (*validator)(addr); |
| 148 | addr_count = 1; |
| 149 | ipaddr = new struct in_addr[1]; |
| 150 | ipaddr[0] = addr; |
| 151 | if(hostname) |
| 152 | delString(hostname); |
| 153 | hostname = NULL; |
| 154 | return *this; |
| 155 | } |
| 156 | |
| 157 | IPV4Address &IPV4Address::operator=(unsigned long addr) |
| 158 | { |
| 159 | union { |
| 160 | uint32 addr; |
| 161 | struct in_addr in4; |
| 162 | } aptr; |
| 163 | |
| 164 | aptr.addr = addr; |
| 165 | |
| 166 | if ( validator ) |
| 167 | (*validator)(aptr.in4); |
| 168 | |
| 169 | if(ipaddr) |
| 170 | delete[] ipaddr; |
| 171 | |
| 172 | addr_count = 1; |
| 173 | ipaddr = new struct in_addr[1]; |
| 174 | memcpy(ipaddr, &aptr.in4, sizeof(struct in_addr)); |
| 175 | if(hostname) |
| 176 | delString(hostname); |
| 177 | hostname = NULL; |
| 178 | return *this; |
| 179 | } |
| 180 | |
| 181 | IPV4Address &IPV4Address::operator=(const IPV4Address &rhs) |
| 182 | { |
| 183 | if(this == &rhs) return *this; |
| 184 | |
| 185 | addr_count = rhs.addr_count; |
| 186 | if(ipaddr) |
| 187 | delete[] ipaddr; |
| 188 | ipaddr = new struct in_addr[addr_count]; |
| 189 | memcpy(ipaddr, rhs.ipaddr, sizeof(struct in_addr) * addr_count); |
| 190 | validator = rhs.validator; |
| 191 | if(hostname) |
| 192 | delString(hostname); |
| 193 | hostname = NULL; |
| 194 | |
| 195 | return *this; |
| 196 | } |
| 197 | |
| 198 | bool IPV4Address::operator==(const IPV4Address &a) const |
| 199 | { |
| 200 | const IPV4Address *smaller, *larger; |
| 201 | size_t s, l; |
| 202 | |
| 203 | if(addr_count > a.addr_count) { |
| 204 | smaller = &a; |
| 205 | larger = this; |
| 206 | } |
| 207 | else { |
| 208 | smaller = this; |
| 209 | larger = &a; |
| 210 | } |
| 211 | |
| 212 | // Loop through all addr's in the smaller and make sure |
| 213 | // that they are all in the larger |
| 214 | for(s = 0; s < smaller->addr_count; s++) { |
| 215 | // bool found = false; |
| 216 | for(l = 0; l < larger->addr_count && |
| 217 | memcmp((char *)&ipaddr[s], (char *)&a.ipaddr[l], sizeof(struct in_addr)); l++); |
| 218 | if(l == larger->addr_count) return false; |
| 219 | } |
| 220 | return true; |
| 221 | } |
| 222 | |
| 223 | bool IPV4Address::operator!=(const IPV4Address &a) const |
| 224 | { |
| 225 | // Impliment in terms of operator== |
| 226 | return (*this == a ? false : true); |
| 227 | } |
| 228 | |
| 229 | IPV4Host &IPV4Host::operator&=(const IPV4Mask &ma) |
| 230 | { |
| 231 | for(size_t i = 0; i < addr_count; i++) { |
| 232 | struct in_addr mask = ma.getAddress(); |
| 233 | unsigned char *a = (unsigned char *)&ipaddr[i]; |
| 234 | unsigned char *m = (unsigned char *)&mask; |
| 235 | |
| 236 | for(size_t j = 0; j < sizeof(struct in_addr); ++j) |
| 237 | *(a++) &= *(m++); |
| 238 | } |
| 239 | if(hostname) |
| 240 | delString(hostname); |
| 241 | hostname = NULL; |
| 242 | |
| 243 | return *this; |
| 244 | } |
| 245 | |
| 246 | IPV4Host::IPV4Host(struct in_addr addr) : |
| 247 | IPV4Address(addr) {} |
| 248 | |
| 249 | IPV4Host::IPV4Host(const char *host) : |
| 250 | IPV4Address(host) |
| 251 | { |
| 252 | char namebuf[256]; |
| 253 | |
| 254 | if(!host) { |
| 255 | if(this == &_host_) { |
| 256 | gethostname(namebuf, 256); |
| 257 | setAddress(namebuf); |
| 258 | } |
| 259 | else |
| 260 | *this = _host_; |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | bool IPV4Address::setIPAddress(const char *host) |
| 265 | { |
| 266 | if(!host) |
| 267 | return false; |
| 268 | |
| 269 | #if defined(WIN32) |
| 270 | struct sockaddr_in addr; |
| 271 | addr.sin_addr.s_addr = inet_addr(host); |
| 272 | if ( validator ) |
| 273 | (*validator)(addr.sin_addr); |
| 274 | if(addr.sin_addr.s_addr == INADDR_NONE) |
| 275 | return false; |
| 276 | *this = addr.sin_addr.s_addr; |
| 277 | #else |
| 278 | struct in_addr l_addr; |
| 279 | |
| 280 | int ok = inet_aton(host, &l_addr); |
| 281 | if ( validator ) |
| 282 | (*validator)(l_addr); |
| 283 | if ( !ok ) |
| 284 | return false; |
| 285 | *this = l_addr; |
| 286 | #endif |
| 287 | return true; |
| 288 | } |
| 289 | |
| 290 | void IPV4Address::setAddress(const char *host) |
| 291 | { |
| 292 | if(hostname) |
| 293 | delString(hostname); |
| 294 | hostname = NULL; |
| 295 | |
| 296 | if(!host) // The way this is currently used, this can never happen |
| 297 | { |
| 298 | *this = (long unsigned int)htonl(INADDR_ANY); |
| 299 | return; |
| 300 | } |
| 301 | |
| 302 | #ifdef WIN32 |
| 303 | if(!stricmp(host, "localhost")) { |
| 304 | *this = (long unsigned int)inet_addr("127.0.0.1"); |
| 305 | return; |
| 306 | } |
| 307 | #endif |
| 308 | |
| 309 | if(!setIPAddress(host)) { |
| 310 | struct hostent *hp; |
| 311 | struct in_addr **bptr; |
| 312 | #if defined(__GLIBC__) |
| 313 | char hbuf[8192]; |
| 314 | struct hostent hb; |
| 315 | int rtn; |
| 316 | |
| 317 | if(gethostbyname_r(host, &hb, hbuf, sizeof(hbuf), &hp, &rtn)) |
| 318 | hp = NULL; |
| 319 | #elif defined(sun) |
| 320 | char hbuf[8192]; |
| 321 | struct hostent hb; |
| 322 | int rtn; |
| 323 | |
| 324 | hp = gethostbyname_r(host, &hb, hbuf, sizeof(hbuf), &rtn); |
| 325 | #elif (defined(__osf__) || defined(WIN32)) |
| 326 | hp = gethostbyname(host); |
| 327 | #else |
| 328 | mutex.enterMutex(); |
| 329 | hp = gethostbyname(host); |
| 330 | mutex.leaveMutex(); |
| 331 | #endif |
| 332 | if(!hp) { |
| 333 | if(ipaddr) |
| 334 | delete[] ipaddr; |
| 335 | ipaddr = new struct in_addr[1]; |
| 336 | memset((void *)&ipaddr[0], 0, sizeof(ipaddr)); |
| 337 | return; |
| 338 | } |
| 339 | |
| 340 | // Count the number of IP addresses returned |
| 341 | addr_count = 0; |
| 342 | for(bptr = (struct in_addr **)hp->h_addr_list; *bptr != NULL; bptr++) { |
| 343 | addr_count++; |
| 344 | } |
| 345 | |
| 346 | // Allocate enough memory |
| 347 | if(ipaddr) |
| 348 | delete[] ipaddr; // Cause this was allocated in base |
| 349 | ipaddr = new struct in_addr[addr_count]; |
| 350 | |
| 351 | // Now go through the list again assigning to |
| 352 | // the member ipaddr; |
| 353 | bptr = (struct in_addr **)hp->h_addr_list; |
| 354 | for(unsigned int i = 0; i < addr_count; i++) { |
| 355 | if ( validator ) |
| 356 | (*validator)(*bptr[i]); |
| 357 | ipaddr[i] = *bptr[i]; |
| 358 | } |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | IPV4Broadcast::IPV4Broadcast(const char *net) : |
| 363 | IPV4Address(net) |
| 364 | { |
| 365 | } |
| 366 | |
| 367 | IPV4Mask::IPV4Mask(const char *mask) |
| 368 | { |
| 369 | unsigned long x = 0xffffffff; |
| 370 | int l = 32 - atoi(mask); |
| 371 | |
| 372 | if(setIPAddress(mask)) |
| 373 | return; |
| 374 | |
| 375 | if(l < 1 || l > 32) { |
| 376 | #ifdef CCXX_EXCEPTIONS |
| 377 | if(Thread::getException() == Thread::throwObject) |
| 378 | throw((IPV4Address *)this); |
| 379 | #endif |
| 380 | return; |
| 381 | } |
| 382 | |
| 383 | *this = htonl(x << l); |
| 384 | } |
| 385 | |
| 386 | const char *IPV4Address::getHostname(void) const |
| 387 | { |
| 388 | struct hostent *hp = NULL; |
| 389 | struct in_addr addr0; |
| 390 | |
| 391 | memset(&addr0, 0, sizeof(addr0)); |
| 392 | if(!memcmp(&addr0, &ipaddr[0], sizeof(addr0))) |
| 393 | return NULL; |
| 394 | |
| 395 | #ifdef WIN32 |
| 396 | memset(&addr0, 0xff, sizeof(addr0)); |
| 397 | if(!memcmp(&addr0, &ipaddr[0], sizeof(addr0))) |
| 398 | return "255.255.255.255"; |
| 399 | long a = inet_addr("127.0.0.1"); |
| 400 | if(!memcmp(&a, &ipaddr[0], sizeof(a))) |
| 401 | return "localhost"; |
| 402 | #endif |
| 403 | |
| 404 | #if defined(__GLIBC__) |
| 405 | char hbuf[8192]; |
| 406 | struct hostent hb; |
| 407 | int rtn; |
| 408 | if(gethostbyaddr_r((char *)&ipaddr[0], sizeof(addr0), AF_INET, &hb, hbuf, sizeof(hbuf), &hp, &rtn)) |
| 409 | hp = NULL; |
| 410 | #elif defined(sun) |
| 411 | char hbuf[8192]; |
| 412 | struct hostent hb; |
| 413 | int rtn; |
| 414 | hp = gethostbyaddr_r((char *)&ipaddr[0], (int)sizeof(addr0), (int)AF_INET, &hb, hbuf, (int)sizeof(hbuf), &rtn); |
| 415 | #elif defined(__osf__) || defined(WIN32) |
| 416 | hp = gethostbyaddr((char *)&ipaddr[0], sizeof(addr0), AF_INET); |
| 417 | #else |
| 418 | mutex.enterMutex(); |
| 419 | hp = gethostbyaddr((char *)&ipaddr[0], sizeof(addr0), AF_INET); |
| 420 | mutex.leaveMutex(); |
| 421 | #endif |
| 422 | if(hp) { |
| 423 | if(hostname) |
| 424 | delString(hostname); |
| 425 | hostname = newString(hp->h_name); |
| 426 | return hostname; |
| 427 | } else { |
| 428 | return inet_ntoa(ipaddr[0]); |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | IPV4Host operator&(const IPV4Host &addr, const IPV4Mask &mask) |
| 433 | { |
| 434 | IPV4Host temp = addr; |
| 435 | temp &= mask; |
| 436 | return temp; |
| 437 | } |
| 438 | |
| 439 | IPV4Multicast::IPV4Multicast() : |
| 440 | IPV4Address(&validator) |
| 441 | {} |
| 442 | |
| 443 | IPV4Multicast::IPV4Multicast(const struct in_addr address) : |
| 444 | IPV4Address(address,&validator) |
| 445 | {} |
| 446 | |
| 447 | IPV4Multicast::IPV4Multicast(const char *address) : |
| 448 | IPV4Address(address,&validator) |
| 449 | {} |
| 450 | |
| 451 | #ifdef CCXX_NAMESPACES |
| 452 | } |
| 453 | #endif |
| 454 | |
| 455 | /** EMACS ** |
| 456 | * Local variables: |
| 457 | * mode: c++ |
| 458 | * c-basic-offset: 4 |
| 459 | * End: |
| 460 | */ |