1 /* 2 * difffile.h - nsd.diff file handling header file. Read/write diff files. 3 * 4 * Copyright (c) 2001-2006, NLnet Labs. All rights reserved. 5 * 6 * See LICENSE for the license. 7 * 8 */ 9 #ifndef DIFFFILE_H 10 #define DIFFFILE_H 11 12 #include "rbtree.h" 13 #include "namedb.h" 14 #include "options.h" 15 #include "udb.h" 16 struct nsd; 17 struct nsdst; 18 struct ixfr_store; 19 20 #define DIFF_PART_XXFR ('X'<<24 | 'X'<<16 | 'F'<<8 | 'R') 21 #define DIFF_PART_XFRF ('X'<<24 | 'F'<<16 | 'R'<<8 | 'F') 22 23 #define DIFF_NOT_COMMITTED (0u) /* XFR not (yet) committed to disk */ 24 #define DIFF_COMMITTED (1u<<0) /* XFR committed to disk */ 25 #define DIFF_CORRUPT (1u<<1) /* XFR corrupt */ 26 #define DIFF_INCONSISTENT (1u<<2) /* IXFR cannot be applied */ 27 #define DIFF_VERIFIED (1u<<3) /* XFR already verified */ 28 29 /* write an xfr packet data to the diff file, type=IXFR. 30 The diff file is created if necessary, with initial header(notcommitted). */ 31 void diff_write_packet(const char* zone, const char* pat, uint32_t old_serial, 32 uint32_t new_serial, uint32_t seq_nr, uint8_t* data, size_t len, 33 struct nsd* nsd, uint64_t filenumber); 34 35 /* 36 * Overwrite header of diff file with committed vale and other data. 37 * append log string. 38 */ 39 void diff_write_commit(const char* zone, uint32_t old_serial, 40 uint32_t new_serial, uint32_t num_parts, uint8_t commit, 41 const char* log_msg, struct nsd* nsd, uint64_t filenumber); 42 43 /* 44 * Overwrite committed value of diff file with discarded to ensure diff 45 * file is not reapplied on reload. 46 */ 47 void diff_update_commit(const char* zone, 48 uint8_t commit, struct nsd* nsd, uint64_t filenumber); 49 50 /* 51 * These functions read parts of the diff file. 52 */ 53 int diff_read_32(FILE *in, uint32_t* result); 54 int diff_read_8(FILE *in, uint8_t* result); 55 int diff_read_str(FILE* in, char* buf, size_t len); 56 57 /* delete the RRs for a zone from memory */ 58 void delete_zone_rrs(namedb_type* db, zone_type* zone); 59 /* delete an RR */ 60 int delete_RR(namedb_type* db, const dname_type* dname, 61 uint16_t type, uint16_t klass, uint32_t ttl, 62 buffer_type* packet, size_t rdatalen, zone_type *zone, 63 region_type* temp_region, int* softfail, 64 struct ixfr_store* ixfr_store); 65 /* add an RR */ 66 int add_RR(namedb_type* db, const dname_type* dname, 67 uint16_t type, uint16_t klass, uint32_t ttl, 68 buffer_type* packet, size_t rdatalen, zone_type *zone, 69 int* softfail, struct ixfr_store* ixfr_store); 70 71 /* apply the xfr file identified by xfrfilenr to zone */ 72 int apply_ixfr_for_zone(struct nsd* nsd, zone_type* zone, FILE* in, 73 struct nsd_options* opt, udb_base* taskudb, uint32_t xfrfilenr); 74 75 enum soainfo_hint { 76 soainfo_ok, 77 soainfo_gone, 78 soainfo_bad 79 }; 80 81 /* task udb structure */ 82 struct task_list_d { 83 /** next task in list */ 84 udb_rel_ptr next; 85 /** task type */ 86 enum { 87 /** expire or un-expire a zone */ 88 task_expire, 89 /** apply an ixfr or axfr to a zone */ 90 task_apply_xfr, 91 /** soa info for zone */ 92 task_soa_info, 93 /** check mtime of zonefiles and read them, done on SIGHUP */ 94 task_check_zonefiles, 95 /** write zonefiles (if changed) */ 96 task_write_zonefiles, 97 /** set verbosity */ 98 task_set_verbosity, 99 /** add a zone */ 100 task_add_zone, 101 /** delete zone */ 102 task_del_zone, 103 /** add TSIG key */ 104 task_add_key, 105 /** delete TSIG key */ 106 task_del_key, 107 /** add pattern */ 108 task_add_pattern, 109 /** delete pattern */ 110 task_del_pattern, 111 /** options change */ 112 task_opt_change, 113 /** zonestat increment */ 114 task_zonestat_inc, 115 /** cookies */ 116 task_cookies, 117 } task_type; 118 uint32_t size; /* size of this struct */ 119 120 /** soainfo: zonename dname, soaRR wireform, yesno is soainfo_hint */ 121 /** expire: zonename, boolyesno */ 122 /** apply_xfr: zonename, serials, yesno is filenamecounter */ 123 uint32_t oldserial, newserial; 124 /** general variable. for some used to see if zname is present. */ 125 uint64_t yesno; 126 struct dname zname[0]; 127 }; 128 #define TASKLIST(ptr) ((struct task_list_d*)UDB_PTR(ptr)) 129 /** create udb for tasks */ 130 struct udb_base* task_file_create(const char* file); 131 void task_remap(udb_base* udb); 132 void task_process_sync(udb_base* udb); 133 void task_clear(udb_base* udb); 134 void task_new_soainfo(udb_base* udb, udb_ptr* last, struct zone* z, enum soainfo_hint hint); 135 void task_new_expire(udb_base* udb, udb_ptr* last, 136 const struct dname* z, int expired); 137 void task_new_check_zonefiles(udb_base* udb, udb_ptr* last, 138 const dname_type* zone); 139 void task_new_write_zonefiles(udb_base* udb, udb_ptr* last, 140 const dname_type* zone); 141 void task_new_set_verbosity(udb_base* udb, udb_ptr* last, int v); 142 void task_new_add_zone(udb_base* udb, udb_ptr* last, const char* zone, 143 const char* pattern, unsigned zonestatid); 144 void task_new_del_zone(udb_base* udb, udb_ptr* last, const dname_type* dname); 145 void task_new_add_key(udb_base* udb, udb_ptr* last, struct key_options* key); 146 void task_new_del_key(udb_base* udb, udb_ptr* last, const char* name); 147 void task_new_add_pattern(udb_base* udb, udb_ptr* last, 148 struct pattern_options* p); 149 void task_new_del_pattern(udb_base* udb, udb_ptr* last, const char* name); 150 void task_new_opt_change(udb_base* udb, udb_ptr* last, struct nsd_options* opt); 151 void task_new_zonestat_inc(udb_base* udb, udb_ptr* last, unsigned sz); 152 void task_new_cookies(udb_base* udb, udb_ptr* last, int answer_cookie, 153 size_t cookie_count, void* cookie_secrets); 154 int task_new_apply_xfr(udb_base* udb, udb_ptr* last, const dname_type* zone, 155 uint32_t old_serial, uint32_t new_serial, uint64_t filenumber); 156 void task_process_apply_xfr(struct nsd* nsd, udb_base* udb, udb_ptr *task); 157 void task_process_in_reload(struct nsd* nsd, udb_base* udb, udb_ptr *last_task, 158 udb_ptr* task); 159 void task_process_expire(namedb_type* db, struct task_list_d* task); 160 161 #endif /* DIFFFILE_H */ 162
Indexes created Tue Feb 24 01:34:59 UTC 2026