/* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ #ifndef DNS_MASTER_H #define DNS_MASTER_H 1 /*! \file dns/master.h */ /*** *** Imports ***/ #include <inttypes.h> #include <stdio.h> #include <isc/lang.h> #include <dns/types.h> /* * Flags to be passed in the 'options' argument in the functions below. */ #define DNS_MASTER_AGETTL 0x00000001 /*%< Age the ttl based on $DATE. */ #define DNS_MASTER_MANYERRORS \ 0x00000002 /*%< Continue processing on errors. \ */ #define DNS_MASTER_NOINCLUDE 0x00000004 /*%< Disallow $INCLUDE directives. */ #define DNS_MASTER_ZONE 0x00000008 /*%< Loading a zone master file. */ #define DNS_MASTER_HINT 0x00000010 /*%< Loading a hint master file. */ #define DNS_MASTER_SLAVE 0x00000020 /*%< Loading a slave master file. */ #define DNS_MASTER_CHECKNS \ 0x00000040 /*%< \ * Check NS records to see \ * if they are an address \ */ #define DNS_MASTER_FATALNS \ 0x00000080 /*%< \ * Treat DNS_MASTER_CHECKNS \ * matches as fatal \ */ #define DNS_MASTER_CHECKNAMES 0x00000100 #define DNS_MASTER_CHECKNAMESFAIL 0x00000200 #define DNS_MASTER_CHECKWILDCARD \ 0x00000400 /* Check for internal wildcards. \ */ #define DNS_MASTER_CHECKMX 0x00000800 #define DNS_MASTER_CHECKMXFAIL 0x00001000 #define DNS_MASTER_RESIGN 0x00002000 #define DNS_MASTER_KEY 0x00004000 /*%< Loading a key zone master file. */ #define DNS_MASTER_NOTTL 0x00008000 /*%< Don't require ttl. */ #define DNS_MASTER_CHECKTTL 0x00010000 /*%< Check max-zone-ttl */ ISC_LANG_BEGINDECLS /* * Structures that implement the "raw" format for master dump. * These are provided for a reference purpose only; in the actual * encoding, we directly read/write each field so that the encoded data * is always "packed", regardless of the hardware architecture. */ #define DNS_RAWFORMAT_VERSION 1 /* * Flags to indicate the status of the data in the raw file header */ #define DNS_MASTERRAW_COMPAT 0x01 #define DNS_MASTERRAW_SOURCESERIALSET 0x02 #define DNS_MASTERRAW_LASTXFRINSET 0x04 /* Common header */ struct dns_masterrawheader { uint32_t format; /* must be * dns_masterformat_raw * or * dns_masterformat_map */ uint32_t version; /* compatibility for future * extensions */ uint32_t dumptime; /* timestamp on creation * (currently unused) */ uint32_t flags; /* Flags */ uint32_t sourceserial; /* Source serial number (used * by inline-signing zones) */ uint32_t lastxfrin; /* timestamp of last transfer * (used by slave zones) */ }; /* The structure for each RRset */ typedef struct { uint32_t totallen; /* length of the data for this * RRset, including the * "header" part */ dns_rdataclass_t rdclass; /* 16-bit class */ dns_rdatatype_t type; /* 16-bit type */ dns_rdatatype_t covers; /* same as type */ dns_ttl_t ttl; /* 32-bit TTL */ uint32_t nrdata; /* number of RRs in this set */ /* followed by encoded owner name, and then rdata */ } dns_masterrawrdataset_t; /* * Method prototype: a callback to register each include file as * it is encountered. */ typedef void (*dns_masterincludecb_t)(const char *file, void *arg); /*** *** Function ***/ isc_result_t dns_master_loadfile(const char *master_file, dns_name_t *top, dns_name_t *origin, dns_rdataclass_t zclass, unsigned int options, uint32_t resign, dns_rdatacallbacks_t *callbacks, dns_masterincludecb_t include_cb, void *include_arg, isc_mem_t *mctx, dns_masterformat_t format, dns_ttl_t maxttl); isc_result_t dns_master_loadstream(FILE *stream, dns_name_t *top, dns_name_t *origin, dns_rdataclass_t zclass, unsigned int options, dns_rdatacallbacks_t *callbacks, isc_mem_t *mctx); isc_result_t dns_master_loadbuffer(isc_buffer_t *buffer, dns_name_t *top, dns_name_t *origin, dns_rdataclass_t zclass, unsigned int options, dns_rdatacallbacks_t *callbacks, isc_mem_t *mctx); isc_result_t dns_master_loadlexer(isc_lex_t *lex, dns_name_t *top, dns_name_t *origin, dns_rdataclass_t zclass, unsigned int options, dns_rdatacallbacks_t *callbacks, isc_mem_t *mctx); isc_result_t dns_master_loadfileinc(const char *master_file, dns_name_t *top, dns_name_t *origin, dns_rdataclass_t zclass, unsigned int options, uint32_t resign, dns_rdatacallbacks_t *callbacks, isc_task_t *task, dns_loaddonefunc_t done, void *done_arg, dns_loadctx_t **ctxp, dns_masterincludecb_t include_cb, void *include_arg, isc_mem_t *mctx, dns_masterformat_t format, uint32_t maxttl); isc_result_t dns_master_loadstreaminc(FILE *stream, dns_name_t *top, dns_name_t *origin, dns_rdataclass_t zclass, unsigned int options, dns_rdatacallbacks_t *callbacks, isc_task_t *task, dns_loaddonefunc_t done, void *done_arg, dns_loadctx_t **ctxp, isc_mem_t *mctx); isc_result_t dns_master_loadbufferinc(isc_buffer_t *buffer, dns_name_t *top, dns_name_t *origin, dns_rdataclass_t zclass, unsigned int options, dns_rdatacallbacks_t *callbacks, isc_task_t *task, dns_loaddonefunc_t done, void *done_arg, dns_loadctx_t **ctxp, isc_mem_t *mctx); isc_result_t dns_master_loadlexerinc(isc_lex_t *lex, dns_name_t *top, dns_name_t *origin, dns_rdataclass_t zclass, unsigned int options, dns_rdatacallbacks_t *callbacks, isc_task_t *task, dns_loaddonefunc_t done, void *done_arg, dns_loadctx_t **ctxp, isc_mem_t *mctx); /*%< * Loads a RFC1305 master file from a file, stream, buffer, or existing * lexer into rdatasets and then calls 'callbacks->commit' to commit the * rdatasets. Rdata memory belongs to dns_master_load and will be * reused / released when the callback completes. dns_load_master will * abort if callbacks->commit returns any value other than ISC_R_SUCCESS. * * If 'DNS_MASTER_AGETTL' is set and the master file contains one or more * $DATE directives, the TTLs of the data will be aged accordingly. * * 'callbacks->commit' is assumed to call 'callbacks->error' or * 'callbacks->warn' to generate any error messages required. * * 'done' is called with 'done_arg' and a result code when the loading * is completed or has failed. If the initial setup fails 'done' is * not called. * * 'resign' the number of seconds before a RRSIG expires that it should * be re-signed. 0 is used if not provided. * * Requires: *\li 'master_file' points to a valid string. *\li 'lexer' points to a valid lexer. *\li 'top' points to a valid name. *\li 'origin' points to a valid name. *\li 'callbacks->commit' points to a valid function. *\li 'callbacks->error' points to a valid function. *\li 'callbacks->warn' points to a valid function. *\li 'mctx' points to a valid memory context. *\li 'task' and 'done' to be valid. *\li 'lmgr' to be valid. *\li 'ctxp != NULL && ctxp == NULL'. * * Returns: *\li ISC_R_SUCCESS upon successfully loading the master file. *\li ISC_R_SEENINCLUDE upon successfully loading the master file with * a $INCLUDE statement. *\li ISC_R_NOMEMORY out of memory. *\li ISC_R_UNEXPECTEDEND expected to be able to read a input token and * there was not one. *\li ISC_R_UNEXPECTED *\li DNS_R_NOOWNER failed to specify a ownername. *\li DNS_R_NOTTL failed to specify a ttl. *\li DNS_R_BADCLASS record class did not match zone class. *\li DNS_R_CONTINUE load still in progress (dns_master_load*inc() only). *\li Any dns_rdata_fromtext() error code. *\li Any error code from callbacks->commit(). */ void dns_loadctx_detach(dns_loadctx_t **ctxp); /*%< * Detach from the load context. * * Requires: *\li '*ctxp' to be valid. * * Ensures: *\li '*ctxp == NULL' */ void dns_loadctx_attach(dns_loadctx_t *source, dns_loadctx_t **target); /*%< * Attach to the load context. * * Requires: *\li 'source' to be valid. *\li 'target != NULL && *target == NULL'. */ void dns_loadctx_cancel(dns_loadctx_t *ctx); /*%< * Cancel loading the zone file associated with this load context. * * Requires: *\li 'ctx' to be valid */ void dns_master_initrawheader(dns_masterrawheader_t *header); /*%< * Initializes the header for a raw master file, setting all * values to zero. */ ISC_LANG_ENDDECLS #endif /* DNS_MASTER_H */