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2fc904111d9b6ec45fc1e4ec9f1f8b43c1e67b9b
dnsmasq/contrib/dns-loc/dnsmasq2-loc-rfc1876.patch
Simon Kelley 5aabfc78bc import of dnsmasq-2.40.tar.gz
2012-01-05 17:31:13 +00:00

523 lines
15 KiB
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diff -Nur dnsmasq-2.39-orig/bld/Makefile dnsmasq-2.39/bld/Makefile
--- dnsmasq-2.39-orig/bld/Makefile 2007-02-17 14:37:06.000000000 +0100
+++ dnsmasq-2.39/bld/Makefile 2007-05-20 18:23:44.000000000 +0200
@@ -2,7 +2,7 @@
PKG_CONFIG ?= pkg-config
-OBJS = cache.o rfc1035.o util.o option.o forward.o isc.o network.o \
+OBJS = cache.o rfc1035.o rfc1876.o util.o option.o forward.o isc.o network.o \
dnsmasq.o dhcp.o lease.o rfc2131.o netlink.o dbus.o bpf.o \
helper.o tftp.o log.o
diff -Nur dnsmasq-2.39-orig/src/dnsmasq.h dnsmasq-2.39/src/dnsmasq.h
--- dnsmasq-2.39-orig/src/dnsmasq.h 2007-04-20 12:53:38.000000000 +0200
+++ dnsmasq-2.39/src/dnsmasq.h 2007-05-20 19:50:37.000000000 +0200
@@ -162,6 +162,12 @@
struct interface_name *next;
};
+struct loc_record {
+ char *name, loc[16];
+ unsigned short class;
+ struct loc_record *next;
+};
+
union bigname {
char name[MAXDNAME];
union bigname *next; /* freelist */
@@ -476,6 +482,7 @@
struct mx_srv_record *mxnames;
struct txt_record *txt;
struct ptr_record *ptr;
+ struct loc_record *loc;
struct interface_name *int_names;
char *mxtarget;
char *lease_file;
@@ -725,3 +732,6 @@
void tftp_request(struct listener *listen, struct daemon *daemon, time_t now);
void check_tftp_listeners(struct daemon *daemon, fd_set *rset, time_t now);
#endif
+
+/* rfc1876 */
+u_int32_t loc_aton(const char *ascii, u_char *binary);
diff -Nur dnsmasq-2.39-orig/src/option.c dnsmasq-2.39/src/option.c
--- dnsmasq-2.39-orig/src/option.c 2007-04-19 23:34:49.000000000 +0200
+++ dnsmasq-2.39/src/option.c 2007-05-20 20:15:15.000000000 +0200
@@ -43,6 +43,7 @@
#define LOPT_REMOTE 269
#define LOPT_SUBSCR 270
#define LOPT_INTNAME 271
+#define LOPT_LOC 272
#ifdef HAVE_GETOPT_LONG
static const struct option opts[] =
@@ -122,6 +123,7 @@
{"tftp-root", 1, 0, LOPT_PREFIX },
{"tftp-max", 1, 0, LOPT_TFTP_MAX },
{"ptr-record", 1, 0, LOPT_PTR },
+ {"loc-record", 1, 0, LOPT_LOC },
#if defined(__FreeBSD__) || defined(__DragonFly__)
{"bridge-interface", 1, 0 , LOPT_BRIDGE },
#endif
@@ -235,6 +237,7 @@
{ "-y, --localise-queries", gettext_noop("Answer DNS queries based on the interface a query was sent to."), NULL },
{ "-Y --txt-record=name,txt....", gettext_noop("Specify TXT DNS record."), NULL },
{ " --ptr-record=name,target", gettext_noop("Specify PTR DNS record."), NULL },
+ { " --loc-record=name,lat lon alt", gettext_noop("Specify LOC DNS record."), NULL },
{ " --interface-name=name,interface", gettext_noop("Give DNS name to IPv4 address of interface."), NULL },
{ "-z, --bind-interfaces", gettext_noop("Bind only to interfaces in use."), NULL },
{ "-Z, --read-ethers", gettext_noop("Read DHCP static host information from %s."), ETHERSFILE },
@@ -1835,6 +1838,37 @@
new->intr = safe_string_alloc(comma);
break;
}
+
+ case LOPT_LOC:
+ {
+ struct loc_record *new;
+ unsigned char *p, *q;
+
+ comma = split(arg);
+
+ if (!canonicalise_opt(arg))
+ {
+ option = '?';
+ problem = _("bad LOC record");
+ break;
+ }
+
+ new = safe_malloc(sizeof(struct loc_record));
+ new->next = daemon->loc;
+ daemon->loc = new;
+ new->class = C_IN;
+ if (!comma || loc_aton(comma,new->loc)!=16)
+ {
+ option = '?';
+ problem = _("bad LOC record");
+ break;
+ }
+
+ if (comma)
+ *comma = 0;
+ new->name = safe_string_alloc(arg);
+ break;
+ }
case LOPT_PTR: /* --ptr-record */
{
diff -Nur dnsmasq-2.39-orig/src/rfc1035.c dnsmasq-2.39/src/rfc1035.c
--- dnsmasq-2.39-orig/src/rfc1035.c 2007-04-20 12:54:26.000000000 +0200
+++ dnsmasq-2.39/src/rfc1035.c 2007-05-20 18:22:46.000000000 +0200
@@ -1112,6 +1112,27 @@
}
}
+ if (qtype == T_LOC || qtype == T_ANY)
+ {
+ struct loc_record *t;
+ for(t = daemon->loc; t ; t = t->next)
+ {
+ if (t->class == qclass && hostname_isequal(name, t->name))
+ {
+ ans = 1;
+ if (!dryrun)
+ {
+ log_query(F_CNAME | F_FORWARD | F_CONFIG | F_NXDOMAIN, name, NULL, 0, NULL, 0);
+ if (add_resource_record(header, limit, &trunc, nameoffset, &ansp,
+ daemon->local_ttl, NULL,
+ T_LOC, t->class, "t", 16, t->loc))
+ anscount++;
+
+ }
+ }
+ }
+ }
+
if (qclass == C_IN)
{
if (qtype == T_PTR || qtype == T_ANY)
diff -Nur dnsmasq-2.39-orig/src/rfc1876.c dnsmasq-2.39/src/rfc1876.c
--- dnsmasq-2.39-orig/src/rfc1876.c 1970-01-01 01:00:00.000000000 +0100
+++ dnsmasq-2.39/src/rfc1876.c 2007-05-20 19:50:10.000000000 +0200
@@ -0,0 +1,379 @@
+/*
+ * routines to convert between on-the-wire RR format and zone file
+ * format. Does not contain conversion to/from decimal degrees;
+ * divide or multiply by 60*60*1000 for that.
+ */
+
+#include "dnsmasq.h"
+
+static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000,
+ 1000000,10000000,100000000,1000000000};
+
+/* takes an XeY precision/size value, returns a string representation.*/
+static const char *
+precsize_ntoa(u_int8_t prec)
+{
+ static char retbuf[sizeof("90000000.00")];
+ unsigned long val;
+ int mantissa, exponent;
+
+ mantissa = (int)((prec >> 4) & 0x0f) % 10;
+ exponent = (int)((prec >> 0) & 0x0f) % 10;
+
+ val = mantissa * poweroften[exponent];
+
+ (void) sprintf(retbuf,"%d.%.2d", val/100, val%100);
+ return (retbuf);
+}
+
+/* converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer.*/
+static u_int8_t
+precsize_aton(char **strptr)
+{
+ unsigned int mval = 0, cmval = 0;
+ u_int8_t retval = 0;
+ register char *cp;
+ register int exponent;
+ register int mantissa;
+
+ cp = *strptr;
+
+ while (isdigit(*cp))
+ mval = mval * 10 + (*cp++ - '0');
+
+ if (*cp == '.') { /* centimeters */
+ cp++;
+ if (isdigit(*cp)) {
+ cmval = (*cp++ - '0') * 10;
+ if (isdigit(*cp)) {
+ cmval += (*cp++ - '0');
+ }
+ }
+ }
+ cmval = (mval * 100) + cmval;
+
+ for (exponent = 0; exponent < 9; exponent++)
+ if (cmval < poweroften[exponent+1])
+ break;
+
+ mantissa = cmval / poweroften[exponent];
+ if (mantissa > 9)
+ mantissa = 9;
+
+ retval = (mantissa << 4) | exponent;
+
+ *strptr = cp;
+
+ return (retval);
+}
+
+/* converts ascii lat/lon to unsigned encoded 32-bit number.
+ * moves pointer. */
+static u_int32_t
+latlon2ul(char **latlonstrptr,int *which)
+{
+ register char *cp;
+ u_int32_t retval;
+ int deg = 0, min = 0, secs = 0, secsfrac = 0;
+
+ cp = *latlonstrptr;
+
+ while (isdigit(*cp))
+ deg = deg * 10 + (*cp++ - '0');
+
+ while (isspace(*cp))
+ cp++;
+
+ if (!(isdigit(*cp)))
+ goto fndhemi;
+
+ while (isdigit(*cp))
+ min = min * 10 + (*cp++ - '0');
+ while (isspace(*cp))
+ cp++;
+
+ if (!(isdigit(*cp)))
+ goto fndhemi;
+
+ while (isdigit(*cp))
+ secs = secs * 10 + (*cp++ - '0');
+
+ if (*cp == '.') { /* decimal seconds */
+ cp++;
+ if (isdigit(*cp)) {
+ secsfrac = (*cp++ - '0') * 100;
+ if (isdigit(*cp)) {
+ secsfrac += (*cp++ - '0') * 10;
+ if (isdigit(*cp)) {
+ secsfrac += (*cp++ - '0');
+ }
+ }
+ }
+ }
+
+ while (!isspace(*cp)) /* if any trailing garbage */
+ cp++;
+
+ while (isspace(*cp))
+ cp++;
+
+ fndhemi:
+ switch (*cp) {
+ case 'N': case 'n':
+ case 'E': case 'e':
+ retval = ((unsigned)1<<31)
+ + (((((deg * 60) + min) * 60) + secs) * 1000)
+ + secsfrac;
+ break;
+ case 'S': case 's':
+ case 'W': case 'w':
+ retval = ((unsigned)1<<31)
+ - (((((deg * 60) + min) * 60) + secs) * 1000)
+ - secsfrac;
+ break;
+ default:
+ retval = 0; /* invalid value -- indicates error */
+ break;
+ }
+
+ switch (*cp) {
+ case 'N': case 'n':
+ case 'S': case 's':
+ *which = 1; /* latitude */
+ break;
+ case 'E': case 'e':
+ case 'W': case 'w':
+ *which = 2; /* longitude */
+ break;
+ default:
+ *which = 0; /* error */
+ break;
+ }
+
+ cp++; /* skip the hemisphere */
+
+ while (!isspace(*cp)) /* if any trailing garbage */
+ cp++;
+
+ while (isspace(*cp)) /* move to next field */
+ cp++;
+
+ *latlonstrptr = cp;
+
+ return (retval);
+}
+
+/* converts a zone file representation in a string to an RDATA
+ * on-the-wire representation. */
+u_int32_t
+loc_aton(const char *ascii, u_char *binary)
+{
+ const char *cp, *maxcp;
+ u_char *bcp;
+
+ u_int32_t latit = 0, longit = 0, alt = 0;
+ u_int32_t lltemp1 = 0, lltemp2 = 0;
+ int altmeters = 0, altfrac = 0, altsign = 1;
+ u_int8_t hp = 0x16; /* default = 1e6 cm = 10000.00m = 10km */
+ u_int8_t vp = 0x13; /* default = 1e3 cm = 10.00m */
+ u_int8_t siz = 0x12; /* default = 1e2 cm = 1.00m */
+ int which1 = 0, which2 = 0;
+
+ cp = ascii;
+ maxcp = cp + strlen(ascii);
+
+ lltemp1 = latlon2ul(&cp, &which1);
+ lltemp2 = latlon2ul(&cp, &which2);
+
+ switch (which1 + which2) {
+ case 3: /* 1 + 2, the only valid combination */
+ if ((which1 == 1) && (which2 == 2)) { /* normal case */
+ latit = lltemp1;
+ longit = lltemp2;
+ } else if ((which1 == 2) && (which2 == 1)) {/*reversed*/
+ longit = lltemp1;
+ latit = lltemp2;
+ } else { /* some kind of brokenness */
+ return 0;
+ }
+ break;
+ default: /* we didn't get one of each */
+ return 0;
+ }
+
+ /* altitude */
+ if (*cp == '-') {
+ altsign = -1;
+ cp++;
+ }
+
+ if (*cp == '+')
+ cp++;
+
+ while (isdigit(*cp))
+ altmeters = altmeters * 10 + (*cp++ - '0');
+
+ if (*cp == '.') { /* decimal meters */
+ cp++;
+ if (isdigit(*cp)) {
+ altfrac = (*cp++ - '0') * 10;
+ if (isdigit(*cp)) {
+ altfrac += (*cp++ - '0');
+ }
+ }
+ }
+
+ alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
+
+ while (!isspace(*cp) && (cp < maxcp))
+ /* if trailing garbage or m */
+ cp++;
+
+ while (isspace(*cp) && (cp < maxcp))
+ cp++;
+ if (cp >= maxcp)
+ goto defaults;
+
+ siz = precsize_aton(&cp);
+
+ while (!isspace(*cp) && (cp < maxcp))/*if trailing garbage or m*/
+ cp++;
+
+ while (isspace(*cp) && (cp < maxcp))
+ cp++;
+
+ if (cp >= maxcp)
+ goto defaults;
+
+ hp = precsize_aton(&cp);
+
+ while (!isspace(*cp) && (cp < maxcp))/*if trailing garbage or m*/
+ cp++;
+
+ while (isspace(*cp) && (cp < maxcp))
+ cp++;
+
+ if (cp >= maxcp)
+ goto defaults;
+
+ vp = precsize_aton(&cp);
+
+ defaults:
+
+ bcp = binary;
+ *bcp++ = (u_int8_t) 0; /* version byte */
+ *bcp++ = siz;
+ *bcp++ = hp;
+ *bcp++ = vp;
+ PUTLONG(latit,bcp);
+ PUTLONG(longit,bcp);
+ PUTLONG(alt,bcp);
+
+ return (16); /* size of RR in octets */
+}
+
+/* takes an on-the-wire LOC RR and prints it in zone file
+ * (human readable) format. */
+char *
+loc_ntoa(const u_char *binary,char *ascii)
+{
+ static char tmpbuf[255*3];
+
+ register char *cp;
+ register const u_char *rcp;
+
+ int latdeg, latmin, latsec, latsecfrac;
+ int longdeg, longmin, longsec, longsecfrac;
+ char northsouth, eastwest;
+ int altmeters, altfrac, altsign;
+
+ const int referencealt = 100000 * 100;
+
+ int32_t latval, longval, altval;
+ u_int32_t templ;
+ u_int8_t sizeval, hpval, vpval, versionval;
+
+ char *sizestr, *hpstr, *vpstr;
+
+ rcp = binary;
+ if (ascii)
+ cp = ascii;
+ else {
+ cp = tmpbuf;
+ }
+
+ versionval = *rcp++;
+
+ if (versionval) {
+ sprintf(cp,"; error: unknown LOC RR version");
+ return (cp);
+ }
+
+ sizeval = *rcp++;
+
+ hpval = *rcp++;
+ vpval = *rcp++;
+
+ GETLONG(templ,rcp);
+ latval = (templ - ((unsigned)1<<31));
+
+ GETLONG(templ,rcp);
+ longval = (templ - ((unsigned)1<<31));
+
+ GETLONG(templ,rcp);
+ if (templ < referencealt) { /* below WGS 84 spheroid */
+ altval = referencealt - templ;
+ altsign = -1;
+ } else {
+ altval = templ - referencealt;
+ altsign = 1;
+ }
+
+ if (latval < 0) {
+ northsouth = 'S';
+ latval = -latval;
+ }
+ else
+ northsouth = 'N';
+
+ latsecfrac = latval % 1000;
+ latval = latval / 1000;
+ latsec = latval % 60;
+ latval = latval / 60;
+ latmin = latval % 60;
+ latval = latval / 60;
+ latdeg = latval;
+
+ if (longval < 0) {
+ eastwest = 'W';
+ longval = -longval;
+ }
+ else
+ eastwest = 'E';
+
+ longsecfrac = longval % 1000;
+ longval = longval / 1000;
+ longsec = longval % 60;
+ longval = longval / 60;
+ longmin = longval % 60;
+ longval = longval / 60;
+ longdeg = longval;
+
+ altfrac = altval % 100;
+ altmeters = (altval / 100) * altsign;
+
+ sizestr = strdup(precsize_ntoa(sizeval));
+ hpstr = strdup(precsize_ntoa(hpval));
+ vpstr = strdup(precsize_ntoa(vpval));
+
+ sprintf(cp,
+ "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm",
+ latdeg, latmin, latsec, latsecfrac, northsouth,
+ longdeg, longmin, longsec, longsecfrac, eastwest,
+ altmeters, altfrac, sizestr, hpstr, vpstr);
+ free(sizestr);
+ free(hpstr);
+ free(vpstr);
+
+ return (cp);
+}
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