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