+++ /dev/null
-/** @file\r
- Copyright (c) 1999 - 2014, Intel Corporation. All rights reserved.<BR>\r
- This program and the accompanying materials are licensed and made available\r
- under the terms and conditions of the BSD License which accompanies this\r
- distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php.\r
-\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-**/\r
-/*\r
- * Copyright (c) 1996 by Internet Software Consortium.\r
- *\r
- * Permission to use, copy, modify, and distribute this software for any\r
- * purpose with or without fee is hereby granted, provided that the above\r
- * copyright notice and this permission notice appear in all copies.\r
- *\r
- * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS\r
- * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES\r
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE\r
- * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL\r
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR\r
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS\r
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS\r
- * SOFTWARE.\r
- */\r
-\r
-/*\r
- * Portions copyright (c) 1999, 2000\r
- * Intel Corporation.\r
- * All rights reserved.\r
- *\r
- * Redistribution and use in source and binary forms, with or without\r
- * modification, are permitted provided that the following conditions\r
- * are met:\r
- *\r
- * 1. Redistributions of source code must retain the above copyright\r
- * notice, this list of conditions and the following disclaimer.\r
- *\r
- * 2. Redistributions in binary form must reproduce the above copyright\r
- * notice, this list of conditions and the following disclaimer in the\r
- * documentation and/or other materials provided with the distribution.\r
- *\r
- * 3. All advertising materials mentioning features or use of this software\r
- * must display the following acknowledgement:\r
- *\r
- * This product includes software developed by Intel Corporation and\r
- * its contributors.\r
- *\r
- * 4. Neither the name of Intel Corporation or its contributors may be\r
- * used to endorse or promote products derived from this software\r
- * without specific prior written permission.\r
- *\r
- * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS''\r
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
- * ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR CONTRIBUTORS BE\r
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF\r
- * THE POSSIBILITY OF SUCH DAMAGE.\r
- *\r
- */\r
-\r
-/*\r
- * Based on the Dynamic DNS reference implementation by Viraj Bais\r
- * <viraj_bais@ccm.fm.intel.com>\r
- */\r
-\r
-#include <sys/types.h>\r
-#include <sys/param.h>\r
-\r
-#include <netinet/in.h>\r
-#include <arpa/nameser.h>\r
-#include <arpa/inet.h>\r
-\r
-#include <errno.h>\r
-#include <limits.h>\r
-#include <netdb.h>\r
-#include <resolv.h>\r
-#include <stdio.h>\r
-#include <stdlib.h>\r
-#include <string.h>\r
-#include <unistd.h>\r
-#include <ctype.h>\r
-\r
-#include "res_config.h"\r
-\r
-static int getnum_str(u_char **, u_char *);\r
-static int getword_str(char *, int, u_char **, u_char *);\r
-\r
-#define ShrinkBuffer(x) if ((buflen -= x) < 0) return (-2);\r
-\r
-/*\r
- * Form update packets.\r
- * Returns the size of the resulting packet if no error\r
- * On error,\r
- * returns -1 if error in reading a word/number in rdata\r
- * portion for update packets\r
- * -2 if length of buffer passed is insufficient\r
- * -3 if zone section is not the first section in\r
- * the linked list, or section order has a problem\r
- * -4 on a number overflow\r
- * -5 unknown operation or no records\r
- */\r
-int\r
-res_mkupdate(ns_updrec *rrecp_in, u_char *buf, int buflen) {\r
- ns_updrec *rrecp_start = rrecp_in;\r
- HEADER *hp;\r
- u_char *cp, *sp2, *startp, *endp;\r
- int n, i, soanum, multiline;\r
- ns_updrec *rrecp;\r
- struct in_addr ina;\r
- char buf2[MAXDNAME];\r
- int section, numrrs = 0, counts[ns_s_max];\r
- u_int16_t rtype, rclass;\r
- u_int32_t n1, rttl;\r
- u_char *dnptrs[20], **dpp, **lastdnptr;\r
-\r
- if ((_res.options & RES_INIT) == 0 && res_init() == -1) {\r
- h_errno = NETDB_INTERNAL;\r
- return (-1);\r
- }\r
-\r
- /*\r
- * Initialize header fields.\r
- */\r
- if ((buf == NULL) || (buflen < HFIXEDSZ))\r
- return (-1);\r
- memset(buf, 0, HFIXEDSZ);\r
- hp = (HEADER *) buf;\r
- hp->id = htons(++_res.id);\r
- hp->opcode = ns_o_update;\r
- hp->rcode = NOERROR;\r
- cp = buf + HFIXEDSZ;\r
- buflen -= HFIXEDSZ;\r
- dpp = dnptrs;\r
- *dpp++ = buf;\r
- *dpp++ = NULL;\r
- lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0];\r
-\r
- if (rrecp_start == NULL)\r
- return (-5);\r
- else if (rrecp_start->r_section != S_ZONE)\r
- return (-3);\r
-\r
- memset(counts, 0, sizeof counts);\r
- for (rrecp = rrecp_start; rrecp; rrecp = rrecp->r_grpnext) {\r
- numrrs++;\r
- section = rrecp->r_section;\r
- if (section < 0 || section >= ns_s_max)\r
- return (-1);\r
- counts[section]++;\r
- for (i = section + 1; i < ns_s_max; i++)\r
- if (counts[i])\r
- return (-3);\r
- rtype = rrecp->r_type;\r
- rclass = rrecp->r_class;\r
- rttl = rrecp->r_ttl;\r
- /* overload class and type */\r
- if (section == S_PREREQ) {\r
- rttl = 0;\r
- switch (rrecp->r_opcode) {\r
- case YXDOMAIN:\r
- rclass = C_ANY;\r
- rtype = T_ANY;\r
- rrecp->r_size = 0;\r
- break;\r
- case NXDOMAIN:\r
- rclass = C_NONE;\r
- rtype = T_ANY;\r
- rrecp->r_size = 0;\r
- break;\r
- case NXRRSET:\r
- rclass = C_NONE;\r
- rrecp->r_size = 0;\r
- break;\r
- case YXRRSET:\r
- if (rrecp->r_size == 0)\r
- rclass = C_ANY;\r
- break;\r
- default:\r
- fprintf(stderr,\r
- "res_mkupdate: incorrect opcode: %d\n",\r
- rrecp->r_opcode);\r
- fflush(stderr);\r
- return (-1);\r
- }\r
- } else if (section == S_UPDATE) {\r
- switch (rrecp->r_opcode) {\r
- case DELETE:\r
- rclass = rrecp->r_size == 0 ? C_ANY : C_NONE;\r
- break;\r
- case ADD:\r
- break;\r
- default:\r
- fprintf(stderr,\r
- "res_mkupdate: incorrect opcode: %d\n",\r
- rrecp->r_opcode);\r
- fflush(stderr);\r
- return (-1);\r
- }\r
- }\r
-\r
- /*\r
- * XXX appending default domain to owner name is omitted,\r
- * fqdn must be provided\r
- */\r
- if ((n = dn_comp(rrecp->r_dname, cp, buflen, dnptrs,\r
- lastdnptr)) < 0)\r
- return (-1);\r
- cp += n;\r
- ShrinkBuffer(n + 2*INT16SZ);\r
- PUTSHORT(rtype, cp);\r
- PUTSHORT(rclass, cp);\r
- if (section == S_ZONE) {\r
- if (numrrs != 1 || rrecp->r_type != T_SOA)\r
- return (-3);\r
- continue;\r
- }\r
- ShrinkBuffer(INT32SZ + INT16SZ);\r
- PUTLONG(rttl, cp);\r
- sp2 = cp; /* save pointer to length byte */\r
- cp += INT16SZ;\r
- if (rrecp->r_size == 0) {\r
- if (section == S_UPDATE && rclass != C_ANY)\r
- return (-1);\r
- else {\r
- PUTSHORT(0, sp2);\r
- continue;\r
- }\r
- }\r
- startp = rrecp->r_data;\r
- endp = startp + rrecp->r_size - 1;\r
- /* XXX this should be done centrally. */\r
- switch (rrecp->r_type) {\r
- case T_A:\r
- if (!getword_str(buf2, sizeof buf2, &startp, endp))\r
- return (-1);\r
- if (!inet_aton(buf2, &ina))\r
- return (-1);\r
- n1 = ntohl(ina.s_addr);\r
- ShrinkBuffer(INT32SZ);\r
- PUTLONG(n1, cp);\r
- break;\r
- case T_CNAME:\r
- case T_MB:\r
- case T_MG:\r
- case T_MR:\r
- case T_NS:\r
- case T_PTR:\r
- if (!getword_str(buf2, sizeof buf2, &startp, endp))\r
- return (-1);\r
- n = dn_comp(buf2, cp, buflen, dnptrs, lastdnptr);\r
- if (n < 0)\r
- return (-1);\r
- cp += n;\r
- ShrinkBuffer(n);\r
- break;\r
- case T_MINFO:\r
- case T_SOA:\r
- case T_RP:\r
- for (i = 0; i < 2; i++) {\r
- if (!getword_str(buf2, sizeof buf2, &startp,\r
- endp))\r
- return (-1);\r
- n = dn_comp(buf2, cp, buflen,\r
- dnptrs, lastdnptr);\r
- if (n < 0)\r
- return (-1);\r
- cp += n;\r
- ShrinkBuffer(n);\r
- }\r
- if (rrecp->r_type == T_SOA) {\r
- ShrinkBuffer(5 * INT32SZ);\r
- while (isspace(*startp) || !*startp)\r
- startp++;\r
- if (*startp == '(') {\r
- multiline = 1;\r
- startp++;\r
- } else\r
- multiline = 0;\r
- /* serial, refresh, retry, expire, minimum */\r
- for (i = 0; i < 5; i++) {\r
- soanum = getnum_str(&startp, endp);\r
- if (soanum < 0)\r
- return (-1);\r
- PUTLONG(soanum, cp);\r
- }\r
- if (multiline) {\r
- while (isspace(*startp) || !*startp)\r
- startp++;\r
- if (*startp != ')')\r
- return (-1);\r
- }\r
- }\r
- break;\r
- case T_MX:\r
- case T_AFSDB:\r
- case T_RT:\r
- n = getnum_str(&startp, endp);\r
- if (n < 0)\r
- return (-1);\r
- PUTSHORT(n, cp);\r
- ShrinkBuffer(INT16SZ);\r
- if (!getword_str(buf2, sizeof buf2, &startp, endp))\r
- return (-1);\r
- n = dn_comp(buf2, cp, buflen, dnptrs, lastdnptr);\r
- if (n < 0)\r
- return (-1);\r
- cp += n;\r
- ShrinkBuffer(n);\r
- break;\r
- case T_PX:\r
- n = getnum_str(&startp, endp);\r
- if (n < 0)\r
- return (-1);\r
- PUTSHORT(n, cp);\r
- ShrinkBuffer(INT16SZ);\r
- for (i = 0; i < 2; i++) {\r
- if (!getword_str(buf2, sizeof buf2, &startp,\r
- endp))\r
- return (-1);\r
- n = dn_comp(buf2, cp, buflen, dnptrs,\r
- lastdnptr);\r
- if (n < 0)\r
- return (-1);\r
- cp += n;\r
- ShrinkBuffer(n);\r
- }\r
- break;\r
- case T_WKS:\r
- case T_HINFO:\r
- case T_TXT:\r
- case T_X25:\r
- case T_ISDN:\r
- case T_NSAP:\r
- case T_LOC:\r
- /* XXX - more fine tuning needed here */\r
- ShrinkBuffer(rrecp->r_size);\r
- memcpy(cp, rrecp->r_data, rrecp->r_size);\r
- cp += rrecp->r_size;\r
- break;\r
- default:\r
- return (-1);\r
- } /*switch*/\r
- n = (u_int16_t)((cp - sp2) - INT16SZ);\r
- PUTSHORT(n, sp2);\r
- } /*for*/\r
-\r
- hp->qdcount = htons(counts[0]);\r
- hp->ancount = htons(counts[1]);\r
- hp->nscount = htons(counts[2]);\r
- hp->arcount = htons(counts[3]);\r
- return ((int)(cp - buf));\r
-}\r
-\r
-/*\r
- * Get a whitespace delimited word from a string (not file)\r
- * into buf. modify the start pointer to point after the\r
- * word in the string.\r
- */\r
-static int\r
-getword_str(char *buf, int size, u_char **startpp, u_char *endp) {\r
- char *cp;\r
- int c;\r
-\r
- for (cp = buf; *startpp <= endp; ) {\r
- c = **startpp;\r
- if (isspace(c) || c == '\0') {\r
- if (cp != buf) /* trailing whitespace */\r
- break;\r
- else { /* leading whitespace */\r
- (*startpp)++;\r
- continue;\r
- }\r
- }\r
- (*startpp)++;\r
- if (cp >= buf+size-1)\r
- break;\r
- *cp++ = (u_char)c;\r
- }\r
- *cp = '\0';\r
- return (cp != buf);\r
-}\r
-\r
-/*\r
- * Get a whitespace delimited number from a string (not file) into buf\r
- * update the start pointer to point after the number in the string.\r
- */\r
-static int\r
-getnum_str(u_char **startpp, u_char *endp) {\r
- int c;\r
- int n;\r
- int seendigit = 0;\r
- int m = 0;\r
-\r
- for (n = 0; *startpp <= endp; ) {\r
- c = **startpp;\r
- if (isspace(c) || c == '\0') {\r
- if (seendigit) /* trailing whitespace */\r
- break;\r
- else { /* leading whitespace */\r
- (*startpp)++;\r
- continue;\r
- }\r
- }\r
- if (c == ';') {\r
- while ((*startpp <= endp) &&\r
- ((c = **startpp) != '\n'))\r
- (*startpp)++;\r
- if (seendigit)\r
- break;\r
- continue;\r
- }\r
- if (!isdigit(c)) {\r
- if (c == ')' && seendigit) {\r
- (*startpp)--;\r
- break;\r
- }\r
- return (-1);\r
- }\r
- (*startpp)++;\r
- n = n * 10 + (c - '0');\r
- seendigit = 1;\r
- }\r
- return (n + m);\r
-}\r
-\r
-/*\r
- * Allocate a resource record buffer & save rr info.\r
- */\r
-ns_updrec *\r
-res_mkupdrec(int section, const char *dname,\r
- u_int class, u_int type, u_long ttl) {\r
- ns_updrec *rrecp = (ns_updrec *)calloc(1, sizeof(ns_updrec));\r
-\r
- if (!rrecp || !(rrecp->r_dname = strdup(dname))) {\r
- free(rrecp);\r
- return (NULL);\r
- }\r
- rrecp->r_class = (u_int16_t)class;\r
- rrecp->r_type = (u_int16_t)type;\r
- rrecp->r_ttl = (u_int32_t)ttl;\r
- rrecp->r_section = (u_int8_t)section;\r
- return (rrecp);\r
-}\r
-\r
-/*\r
- * Free a resource record buffer created by res_mkupdrec.\r
- */\r
-void\r
-res_freeupdrec(ns_updrec *rrecp) {\r
- /* Note: freeing r_dp is the caller's responsibility. */\r
- if (rrecp->r_dname != NULL)\r
- free(rrecp->r_dname);\r
- free(rrecp);\r
-}\r
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