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Make the IPA installer IPv6 friendly

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Notable changes include:
 * parse AAAA records in dnsclient
 * also ask for AAAA records when verifying FQDN
 * do not use functions that are not IPv6 aware - notably socket.gethostbyname()
   The complete list of functions was taken from http://www.akkadia.org/drepper/userapi-ipv6.html
   section "Interface Checklist"
This commit is contained in:
Jakub Hrozek
2010-12-01 17:22:56 +01:00
committed by Rob Crittenden
parent b328d845de
commit ee4d2739f1
6 changed files with 125 additions and 70 deletions
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19
ipapython/dnsclient.py
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@@ -37,6 +37,7 @@ DNS_T_PTR = 12
DNS_T_HINFO = 13
DNS_T_MX = 15
DNS_T_TXT = 16
DNS_T_AAAA = 28
DNS_T_SRV = 33
DNS_T_ANY = 255
@@ -127,6 +128,10 @@ class DNSRData:
# u_int32_t address;
#} dns_rr_a_t;
#
#typedef struct dns_rr_aaaa {
# unsigned char address[16];
#} dns_rr_aaaa_t;
#
#typedef struct dns_rr_cname {
# const char *cname;
#} dns_rr_cname_t;
@@ -239,6 +244,18 @@ def dnsParseA(data, base):
print "A = %d.%d.%d.%d." % (ord(data[0]), ord(data[1]), ord(data[2]), ord(data[3]))
return rdata
def dnsParseAAAA(data, base):
rdata = DNSRData()
if len(data) < 16:
rdata.address = 0
return None
rdata.address = list(struct.unpack('!16B', data))
if DEBUG_DNSCLIENT:
print socket.inet_ntop(socket.AF_INET6,
struct.pack('!16B', *rdata.address))
return rdata
def dnsParseText(data):
if len(data) < 1:
return ("", None)
@@ -413,7 +430,7 @@ def dnsParseResults(results):
DNS_T_NULL: dnsParseNULL, DNS_T_WKS: dnsParseWKS,
DNS_T_PTR: dnsParsePTR, DNS_T_HINFO: dnsParseHINFO,
DNS_T_MX: dnsParseMX, DNS_T_TXT: dnsParseTXT,
DNS_T_SRV: dnsParseSRV}
DNS_T_AAAA : dnsParseAAAA, DNS_T_SRV: dnsParseSRV}
if not rr.dns_type in fmap:
if DEBUG_DNSCLIENT: