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| e57a89 | 1 | package com.jcdm.common.utils.ip; |
| 懒 | 2 | |
| 3 | import java.net.InetAddress; | |
| 4 | import java.net.UnknownHostException; | |
| 5 | import javax.servlet.http.HttpServletRequest; | |
| 6 | import com.jcdm.common.utils.ServletUtils; | |
| 7 | import com.jcdm.common.utils.StringUtils; | |
| 8 | ||
| 9 | /** | |
| 10 | * 获取IP方法 | |
| 11 | * | |
| 12 | * @author jc | |
| 13 | */ | |
| 14 | public class IpUtils | |
| 15 | { | |
| 16 | public final static String REGX_0_255 = "(25[0-5]|2[0-4]\\d|1\\d{2}|[1-9]\\d|\\d)"; | |
| 17 | // 匹配 ip | |
| 18 | public final static String REGX_IP = "((" + REGX_0_255 + "\\.){3}" + REGX_0_255 + ")"; | |
| 19 | public final static String REGX_IP_WILDCARD = "(((\\*\\.){3}\\*)|(" + REGX_0_255 + "(\\.\\*){3})|(" + REGX_0_255 + "\\." + REGX_0_255 + ")(\\.\\*){2}" + "|((" + REGX_0_255 + "\\.){3}\\*))"; | |
| 20 | // 匹配网段 | |
| 21 | public final static String REGX_IP_SEG = "(" + REGX_IP + "\\-" + REGX_IP + ")"; | |
| 22 | ||
| 23 | /** | |
| 24 | * 获取客户端IP | |
| 25 | * | |
| 26 | * @return IP地址 | |
| 27 | */ | |
| 28 | public static String getIpAddr() | |
| 29 | { | |
| 30 | return getIpAddr(ServletUtils.getRequest()); | |
| 31 | } | |
| 32 | ||
| 33 | /** | |
| 34 | * 获取客户端IP | |
| 35 | * | |
| 36 | * @param request 请求对象 | |
| 37 | * @return IP地址 | |
| 38 | */ | |
| 39 | public static String getIpAddr(HttpServletRequest request) | |
| 40 | { | |
| 41 | if (request == null) | |
| 42 | { | |
| 43 | return "unknown"; | |
| 44 | } | |
| 45 | String ip = request.getHeader("x-forwarded-for"); | |
| 46 | if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) | |
| 47 | { | |
| 48 | ip = request.getHeader("Proxy-Client-IP"); | |
| 49 | } | |
| 50 | if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) | |
| 51 | { | |
| 52 | ip = request.getHeader("X-Forwarded-For"); | |
| 53 | } | |
| 54 | if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) | |
| 55 | { | |
| 56 | ip = request.getHeader("WL-Proxy-Client-IP"); | |
| 57 | } | |
| 58 | if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) | |
| 59 | { | |
| 60 | ip = request.getHeader("X-Real-IP"); | |
| 61 | } | |
| 62 | ||
| 63 | if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) | |
| 64 | { | |
| 65 | ip = request.getRemoteAddr(); | |
| 66 | } | |
| 67 | ||
| 68 | return "0:0:0:0:0:0:0:1".equals(ip) ? "127.0.0.1" : getMultistageReverseProxyIp(ip); | |
| 69 | } | |
| 70 | ||
| 71 | /** | |
| 72 | * 检查是否为内部IP地址 | |
| 73 | * | |
| 74 | * @param ip IP地址 | |
| 75 | * @return 结果 | |
| 76 | */ | |
| 77 | public static boolean internalIp(String ip) | |
| 78 | { | |
| 79 | byte[] addr = textToNumericFormatV4(ip); | |
| 80 | return internalIp(addr) || "127.0.0.1".equals(ip); | |
| 81 | } | |
| 82 | ||
| 83 | /** | |
| 84 | * 检查是否为内部IP地址 | |
| 85 | * | |
| 86 | * @param addr byte地址 | |
| 87 | * @return 结果 | |
| 88 | */ | |
| 89 | private static boolean internalIp(byte[] addr) | |
| 90 | { | |
| 91 | if (StringUtils.isNull(addr) || addr.length < 2) | |
| 92 | { | |
| 93 | return true; | |
| 94 | } | |
| 95 | final byte b0 = addr[0]; | |
| 96 | final byte b1 = addr[1]; | |
| 97 | // 10.x.x.x/8 | |
| 98 | final byte SECTION_1 = 0x0A; | |
| 99 | // 172.16.x.x/12 | |
| 100 | final byte SECTION_2 = (byte) 0xAC; | |
| 101 | final byte SECTION_3 = (byte) 0x10; | |
| 102 | final byte SECTION_4 = (byte) 0x1F; | |
| 103 | // 192.168.x.x/16 | |
| 104 | final byte SECTION_5 = (byte) 0xC0; | |
| 105 | final byte SECTION_6 = (byte) 0xA8; | |
| 106 | switch (b0) | |
| 107 | { | |
| 108 | case SECTION_1: | |
| 109 | return true; | |
| 110 | case SECTION_2: | |
| 111 | if (b1 >= SECTION_3 && b1 <= SECTION_4) | |
| 112 | { | |
| 113 | return true; | |
| 114 | } | |
| 115 | case SECTION_5: | |
| 116 | switch (b1) | |
| 117 | { | |
| 118 | case SECTION_6: | |
| 119 | return true; | |
| 120 | } | |
| 121 | default: | |
| 122 | return false; | |
| 123 | } | |
| 124 | } | |
| 125 | ||
| 126 | /** | |
| 127 | * 将IPv4地址转换成字节 | |
| 128 | * | |
| 129 | * @param text IPv4地址 | |
| 130 | * @return byte 字节 | |
| 131 | */ | |
| 132 | public static byte[] textToNumericFormatV4(String text) | |
| 133 | { | |
| 134 | if (text.length() == 0) | |
| 135 | { | |
| 136 | return null; | |
| 137 | } | |
| 138 | ||
| 139 | byte[] bytes = new byte[4]; | |
| 140 | String[] elements = text.split("\\.", -1); | |
| 141 | try | |
| 142 | { | |
| 143 | long l; | |
| 144 | int i; | |
| 145 | switch (elements.length) | |
| 146 | { | |
| 147 | case 1: | |
| 148 | l = Long.parseLong(elements[0]); | |
| 149 | if ((l < 0L) || (l > 4294967295L)) | |
| 150 | { | |
| 151 | return null; | |
| 152 | } | |
| 153 | bytes[0] = (byte) (int) (l >> 24 & 0xFF); | |
| 154 | bytes[1] = (byte) (int) ((l & 0xFFFFFF) >> 16 & 0xFF); | |
| 155 | bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF); | |
| 156 | bytes[3] = (byte) (int) (l & 0xFF); | |
| 157 | break; | |
| 158 | case 2: | |
| 159 | l = Integer.parseInt(elements[0]); | |
| 160 | if ((l < 0L) || (l > 255L)) | |
| 161 | { | |
| 162 | return null; | |
| 163 | } | |
| 164 | bytes[0] = (byte) (int) (l & 0xFF); | |
| 165 | l = Integer.parseInt(elements[1]); | |
| 166 | if ((l < 0L) || (l > 16777215L)) | |
| 167 | { | |
| 168 | return null; | |
| 169 | } | |
| 170 | bytes[1] = (byte) (int) (l >> 16 & 0xFF); | |
| 171 | bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF); | |
| 172 | bytes[3] = (byte) (int) (l & 0xFF); | |
| 173 | break; | |
| 174 | case 3: | |
| 175 | for (i = 0; i < 2; ++i) | |
| 176 | { | |
| 177 | l = Integer.parseInt(elements[i]); | |
| 178 | if ((l < 0L) || (l > 255L)) | |
| 179 | { | |
| 180 | return null; | |
| 181 | } | |
| 182 | bytes[i] = (byte) (int) (l & 0xFF); | |
| 183 | } | |
| 184 | l = Integer.parseInt(elements[2]); | |
| 185 | if ((l < 0L) || (l > 65535L)) | |
| 186 | { | |
| 187 | return null; | |
| 188 | } | |
| 189 | bytes[2] = (byte) (int) (l >> 8 & 0xFF); | |
| 190 | bytes[3] = (byte) (int) (l & 0xFF); | |
| 191 | break; | |
| 192 | case 4: | |
| 193 | for (i = 0; i < 4; ++i) | |
| 194 | { | |
| 195 | l = Integer.parseInt(elements[i]); | |
| 196 | if ((l < 0L) || (l > 255L)) | |
| 197 | { | |
| 198 | return null; | |
| 199 | } | |
| 200 | bytes[i] = (byte) (int) (l & 0xFF); | |
| 201 | } | |
| 202 | break; | |
| 203 | default: | |
| 204 | return null; | |
| 205 | } | |
| 206 | } | |
| 207 | catch (NumberFormatException e) | |
| 208 | { | |
| 209 | return null; | |
| 210 | } | |
| 211 | return bytes; | |
| 212 | } | |
| 213 | ||
| 214 | /** | |
| 215 | * 获取IP地址 | |
| 216 | * | |
| 217 | * @return 本地IP地址 | |
| 218 | */ | |
| 219 | public static String getHostIp() | |
| 220 | { | |
| 221 | try | |
| 222 | { | |
| 223 | return InetAddress.getLocalHost().getHostAddress(); | |
| 224 | } | |
| 225 | catch (UnknownHostException e) | |
| 226 | { | |
| 227 | } | |
| 228 | return "127.0.0.1"; | |
| 229 | } | |
| 230 | ||
| 231 | /** | |
| 232 | * 获取主机名 | |
| 233 | * | |
| 234 | * @return 本地主机名 | |
| 235 | */ | |
| 236 | public static String getHostName() | |
| 237 | { | |
| 238 | try | |
| 239 | { | |
| 240 | return InetAddress.getLocalHost().getHostName(); | |
| 241 | } | |
| 242 | catch (UnknownHostException e) | |
| 243 | { | |
| 244 | } | |
| 245 | return "未知"; | |
| 246 | } | |
| 247 | ||
| 248 | /** | |
| 249 | * 从多级反向代理中获得第一个非unknown IP地址 | |
| 250 | * | |
| 251 | * @param ip 获得的IP地址 | |
| 252 | * @return 第一个非unknown IP地址 | |
| 253 | */ | |
| 254 | public static String getMultistageReverseProxyIp(String ip) | |
| 255 | { | |
| 256 | // 多级反向代理检测 | |
| 257 | if (ip != null && ip.indexOf(",") > 0) | |
| 258 | { | |
| 259 | final String[] ips = ip.trim().split(","); | |
| 260 | for (String subIp : ips) | |
| 261 | { | |
| 262 | if (false == isUnknown(subIp)) | |
| 263 | { | |
| 264 | ip = subIp; | |
| 265 | break; | |
| 266 | } | |
| 267 | } | |
| 268 | } | |
| 269 | return StringUtils.substring(ip, 0, 255); | |
| 270 | } | |
| 271 | ||
| 272 | /** | |
| 273 | * 检测给定字符串是否为未知，多用于检测HTTP请求相关 | |
| 274 | * | |
| 275 | * @param checkString 被检测的字符串 | |
| 276 | * @return 是否未知 | |
| 277 | */ | |
| 278 | public static boolean isUnknown(String checkString) | |
| 279 | { | |
| 280 | return StringUtils.isBlank(checkString) || "unknown".equalsIgnoreCase(checkString); | |
| 281 | } | |
| 282 | ||
| 283 | /** | |
| 284 | * 是否为IP | |
| 285 | */ | |
| 286 | public static boolean isIP(String ip) | |
| 287 | { | |
| 288 | return StringUtils.isNotBlank(ip) && ip.matches(REGX_IP); | |
| 289 | } | |
| 290 | ||
| 291 | /** | |
| 292 | * 是否为IP，或 *为间隔的通配符地址 | |
| 293 | */ | |
| 294 | public static boolean isIpWildCard(String ip) | |
| 295 | { | |
| 296 | return StringUtils.isNotBlank(ip) && ip.matches(REGX_IP_WILDCARD); | |
| 297 | } | |
| 298 | ||
| 299 | /** | |
| 300 | * 检测参数是否在ip通配符里 | |
| 301 | */ | |
| 302 | public static boolean ipIsInWildCardNoCheck(String ipWildCard, String ip) | |
| 303 | { | |
| 304 | String[] s1 = ipWildCard.split("\\."); | |
| 305 | String[] s2 = ip.split("\\."); | |
| 306 | boolean isMatchedSeg = true; | |
| 307 | for (int i = 0; i < s1.length && !s1[i].equals("*"); i++) | |
| 308 | { | |
| 309 | if (!s1[i].equals(s2[i])) | |
| 310 | { | |
| 311 | isMatchedSeg = false; | |
| 312 | break; | |
| 313 | } | |
| 314 | } | |
| 315 | return isMatchedSeg; | |
| 316 | } | |
| 317 | ||
| 318 | /** | |
| 319 | * 是否为特定格式如:“10.10.10.1-10.10.10.99”的ip段字符串 | |
| 320 | */ | |
| 321 | public static boolean isIPSegment(String ipSeg) | |
| 322 | { | |
| 323 | return StringUtils.isNotBlank(ipSeg) && ipSeg.matches(REGX_IP_SEG); | |
| 324 | } | |
| 325 | ||
| 326 | /** | |
| 327 | * 判断ip是否在指定网段中 | |
| 328 | */ | |
| 329 | public static boolean ipIsInNetNoCheck(String iparea, String ip) | |
| 330 | { | |
| 331 | int idx = iparea.indexOf('-'); | |
| 332 | String[] sips = iparea.substring(0, idx).split("\\."); | |
| 333 | String[] sipe = iparea.substring(idx + 1).split("\\."); | |
| 334 | String[] sipt = ip.split("\\."); | |
| 335 | long ips = 0L, ipe = 0L, ipt = 0L; | |
| 336 | for (int i = 0; i < 4; ++i) | |
| 337 | { | |
| 338 | ips = ips << 8 | Integer.parseInt(sips[i]); | |
| 339 | ipe = ipe << 8 | Integer.parseInt(sipe[i]); | |
| 340 | ipt = ipt << 8 | Integer.parseInt(sipt[i]); | |
| 341 | } | |
| 342 | if (ips > ipe) | |
| 343 | { | |
| 344 | long t = ips; | |
| 345 | ips = ipe; | |
| 346 | ipe = t; | |
| 347 | } | |
| 348 | return ips <= ipt && ipt <= ipe; | |
| 349 | } | |
| 350 | ||
| 351 | /** | |
| 352 | * 校验ip是否符合过滤串规则 | |
| 353 | * | |
| 354 | * @param filter 过滤IP列表,支持后缀'*'通配,支持网段如:`10.10.10.1-10.10.10.99` | |
| 355 | * @param ip 校验IP地址 | |
| 356 | * @return boolean 结果 | |
| 357 | */ | |
| 358 | public static boolean isMatchedIp(String filter, String ip) | |
| 359 | { | |
| 360 | if (StringUtils.isEmpty(filter) || StringUtils.isEmpty(ip)) | |
| 361 | { | |
| 362 | return false; | |
| 363 | } | |
| 364 | String[] ips = filter.split(";"); | |
| 365 | for (String iStr : ips) | |
| 366 | { | |
| 367 | if (isIP(iStr) && iStr.equals(ip)) | |
| 368 | { | |
| 369 | return true; | |
| 370 | } | |
| 371 | else if (isIpWildCard(iStr) && ipIsInWildCardNoCheck(iStr, ip)) | |
| 372 | { | |
| 373 | return true; | |
| 374 | } | |
| 375 | else if (isIPSegment(iStr) && ipIsInNetNoCheck(iStr, ip)) | |
| 376 | { | |
| 377 | return true; | |
| 378 | } | |
| 379 | } | |
| 380 | return false; | |
| 381 | } | |
| 382 | } | |
