ref: 2899b719ae11e4ae18fef3995cdb84c64ac60bc3
parent: 2d56837b2fabf6a7cc11f02b51f20a1e35128c57
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Wed Nov 3 15:38:36 EDT 2021
libndb: move mkptrname() into libndb to avoid duplication
--- a/sys/include/ndb.h
+++ b/sys/include/ndb.h
@@ -128,6 +128,7 @@
Ndbtuple* csipinfo(char*, char*, char*, char**, int);
Ndbtuple* dnsquery(char*, char*, char*);
char* ipattr(char*);
+void mkptrname(char *ip, char *rip, int rlen);
Ndb* ndbcat(Ndb*, Ndb*);
int ndbchanged(Ndb*);
void ndbclose(Ndb*);
--- a/sys/man/2/ndb
+++ b/sys/man/2/ndb
@@ -1,6 +1,6 @@
.TH NDB 2
.SH NAME
-ndbopen, ndbcat, ndbchanged, ndbclose, ndbreopen, ndbsearch, ndbsnext, ndbgetvalue, ndbfree, ipattr, ndbgetipaddr, ndbipinfo, csipinfo, ndbhash, ndbparse, csgetvalue, ndbfindattr, dnsquery, ndbdiscard, ndbconcatenate, ndbreorder, ndbsubstitute, ndbdedup \- network database
+ndbopen, ndbcat, ndbchanged, ndbclose, ndbreopen, ndbsearch, ndbsnext, ndbgetvalue, ndbfree, ipattr, mkptrname, ndbgetipaddr, ndbipinfo, csipinfo, ndbhash, ndbparse, csgetvalue, ndbfindattr, dnsquery, ndbdiscard, ndbconcatenate, ndbreorder, ndbsubstitute, ndbdedup \- network database
.SH SYNOPSIS
.B #include <u.h>
.br
@@ -47,6 +47,9 @@
char* ipattr(char *name)
.PP
.B
+void mkptrname(char *ip, char *rip, int rlen);
+.PP
+.B
Ndbtuple* ndbgetipaddr(Ndb *db, char *sys);
.PP
.B
@@ -235,6 +238,26 @@
.B sys
system name
.RE
+.PP
+.I Mkptrname
+converts the address string
+.I ip
+to a reverse lookup domain-name, returned in
+.IR rip .
+The
+.I rlen
+argument gives the maximum size of the
+.I rip
+buffer including the NUL-terminator.
+If
+.I ip
+already is a reverse lookup domain-name
+or has invalid ip address syntax,
+then
+.I ip
+is copied into
+.I rip
+verbatim.
.PP
.I Ndbgetipaddr
looks in
--- a/sys/src/cmd/ndb/dnsdebug.c
+++ b/sys/src/cmd/ndb/dnsdebug.c
@@ -129,32 +129,6 @@
return x;
}
-/*
- * convert address into a reverse lookup address
- */
-static void
-mkptrname(char *ip, char *rip, int rlen)
-{- uchar a[IPaddrlen];
- char *p, *e;
- int i;
-
- if(cistrstr(ip, "in-addr.arpa") || cistrstr(ip, "ip6.arpa") || parseip(a, ip) == -1)
- snprint(rip, rlen, "%s", ip);
- else if(isv4(a))
- snprint(rip, rlen, "%ud.%ud.%ud.%ud.in-addr.arpa",
- a[15], a[14], a[13], a[12]);
- else{- p = rip;
- e = rip + rlen;
- for(i = 15; i >= 0; i--){- p = seprint(p, e, "%ux.", a[i]&0xf);
- p = seprint(p, e, "%ux.", a[i]>>4);
- }
- seprint(p, e, "ip6.arpa");
- }
-}
-
int
prettyrrfmt(Fmt *f)
{--- a/sys/src/cmd/ndb/dnsquery.c
+++ b/sys/src/cmd/ndb/dnsquery.c
@@ -4,7 +4,6 @@
#include <ctype.h>
#include <ndb.h>
#include "dns.h"
-#include "ip.h"
static void
querydns(int fd, char *line, int n)
@@ -20,32 +19,6 @@
while((n = read(fd, buf, sizeof(buf)-1)) > 0){buf[n++] = '\n';
write(1, buf, n);
- }
-}
-
-/*
- * convert address into a reverse lookup address
- */
-static void
-mkptrname(char *ip, char *rip, int rlen)
-{- uchar a[IPaddrlen];
- char *p, *e;
- int i;
-
- if(cistrstr(ip, "in-addr.arpa") || cistrstr(ip, "ip6.arpa") || parseip(a, ip) == -1)
- snprint(rip, rlen, "%s", ip);
- else if(isv4(a))
- snprint(rip, rlen, "%ud.%ud.%ud.%ud.in-addr.arpa",
- a[15], a[14], a[13], a[12]);
- else{- p = rip;
- e = rip + rlen;
- for(i = 15; i >= 0; i--){- p = seprint(p, e, "%ux.", a[i]&0xf);
- p = seprint(p, e, "%ux.", a[i]>>4);
- }
- seprint(p, e, "ip6.arpa");
}
}
--- a/sys/src/libndb/dnsquery.c
+++ b/sys/src/libndb/dnsquery.c
@@ -5,7 +5,6 @@
#include <ndbhf.h>
#include <ip.h>
-static void mkptrname(char*, char*, int);
static Ndbtuple *doquery(int, char *dn, char *type);
/*
@@ -49,32 +48,6 @@
close(fd);
ndbsetmalloctag(t, getcallerpc(&net));
return t;
-}
-
-/*
- * convert address into a reverse lookup address
- */
-static void
-mkptrname(char *ip, char *rip, int rlen)
-{- uchar a[IPaddrlen];
- char *p, *e;
- int i;
-
- if(cistrstr(ip, "in-addr.arpa") || cistrstr(ip, "ip6.arpa") || parseip(a, ip) == -1)
- snprint(rip, rlen, "%s", ip);
- else if(isv4(a))
- snprint(rip, rlen, "%ud.%ud.%ud.%ud.in-addr.arpa",
- a[15], a[14], a[13], a[12]);
- else{- p = rip;
- e = rip + rlen;
- for(i = 15; i >= 0; i--){- p = seprint(p, e, "%ux.", a[i]&0xf);
- p = seprint(p, e, "%ux.", a[i]>>4);
- }
- seprint(p, e, "ip6.arpa");
- }
}
static Ndbtuple*
--- a/sys/src/libndb/mkfile
+++ b/sys/src/libndb/mkfile
@@ -6,6 +6,7 @@
csipinfo.$O\
dnsquery.$O\
ipattr.$O\
+ mkptrname.$O\
ndbaux.$O\
ndbcache.$O\
ndbcat.$O\
--- /dev/null
+++ b/sys/src/libndb/mkptrname.c
@@ -1,0 +1,29 @@
+#include <u.h>
+#include <libc.h>
+#include <ip.h>
+
+/*
+ * convert address into a reverse lookup address
+ */
+void
+mkptrname(char *ip, char *rip, int rlen)
+{+ uchar a[IPaddrlen];
+ char *p, *e;
+ int i;
+
+ if(cistrstr(ip, "in-addr.arpa") || cistrstr(ip, "ip6.arpa") || parseip(a, ip) == -1)
+ snprint(rip, rlen, "%s", ip);
+ else if(isv4(a))
+ snprint(rip, rlen, "%ud.%ud.%ud.%ud.in-addr.arpa",
+ a[15], a[14], a[13], a[12]);
+ else{+ p = rip;
+ e = rip + rlen;
+ for(i = 15; i >= 0; i--){+ p = seprint(p, e, "%ux.", a[i]&0xf);
+ p = seprint(p, e, "%ux.", a[i]>>4);
+ }
+ seprint(p, e, "ip6.arpa");
+ }
+}