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Add --cache-rr to enable caching of arbitrary RR types.

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This commit is contained in:
Simon Kelley
2023-03-23 17:15:35 +00:00
parent 88fc6c8023
commit 638c7c4d20
9 changed files with 416 additions and 174 deletions
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20
src/dnsmasq.h
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@@ -282,7 +282,8 @@ struct event_desc {
#define OPT_STRIP_MAC 70
#define OPT_NORR 71
#define OPT_NO_IDENT 72
#define OPT_LAST 73
#define OPT_CACHE_RR 73
#define OPT_LAST 74
#define OPTION_BITS (sizeof(unsigned int)*8)
#define OPTION_SIZE ( (OPT_LAST/OPTION_BITS)+((OPT_LAST%OPTION_BITS)!=0) )
@@ -337,7 +338,7 @@ union all_addr {
/* for arbitrary RR record. */
struct {
struct blockdata *rrdata;
u16 rrtype;
unsigned short rrtype, datalen;
} rr;
};
@@ -663,6 +664,11 @@ struct iname {
struct iname *next;
};
struct rrlist {
unsigned short rr;
struct rrlist *next;
};
/* subnet parameters from command line */
struct mysubnet {
union mysockaddr addr;
@@ -1128,6 +1134,7 @@ extern struct daemon {
struct naptr *naptr;
struct txt_record *txt, *rr;
struct ptr_record *ptr;
struct rrlist *cache_rr, filter_rr;
struct host_record *host_records, *host_records_tail;
struct cname *cnames;
struct auth_zone *auth_zones;
@@ -1309,6 +1316,7 @@ struct server_details {
/* cache.c */
void cache_init(void);
unsigned short rrtype(char *in);
void next_uid(struct crec *crecp);
void log_query(unsigned int flags, char *name, union all_addr *addr, char *arg, unsigned short type);
char *record_source(unsigned int index);
@@ -1342,6 +1350,8 @@ int read_hostsfile(char *filename, unsigned int index, int cache_size,
void blockdata_init(void);
void blockdata_report(void);
struct blockdata *blockdata_alloc(char *data, size_t len);
int blockdata_expand(struct blockdata *block, size_t oldlen,
char *data, size_t newlen);
void *blockdata_retrieve(struct blockdata *block, size_t len, void *data);
struct blockdata *blockdata_read(int fd, size_t len);
void blockdata_write(struct blockdata *block, size_t len, int fd);
@@ -1423,6 +1433,7 @@ void rand_init(void);
unsigned short rand16(void);
u32 rand32(void);
u64 rand64(void);
int rr_on_list(struct rrlist *list, unsigned short rr);
int legal_hostname(char *name);
char *canonicalise(char *in, int *nomem);
unsigned char *do_rfc1035_name(unsigned char *p, char *sval, char *limit);
@@ -1817,13 +1828,16 @@ int do_poll(int timeout);
/* rrfilter.c */
size_t rrfilter(struct dns_header *header, size_t *plen, int mode);
u16 *rrfilter_desc(int type);
short *rrfilter_desc(int type);
int expand_workspace(unsigned char ***wkspc, int *szp, int new);
int to_wire(char *name);
void from_wire(char *name);
/* modes. */
#define RRFILTER_EDNS0 0
#define RRFILTER_DNSSEC 1
#define RRFILTER_A 2
#define RRFILTER_AAAA 3
/* edns0.c */
unsigned char *find_pseudoheader(struct dns_header *header, size_t plen,
size_t *len, unsigned char **p, int *is_sign, int *is_last);