diff options
author | Philip Hazel <ph10@hermes.cam.ac.uk> | 2004-11-24 15:43:36 +0000 |
---|---|---|
committer | Philip Hazel <ph10@hermes.cam.ac.uk> | 2004-11-24 15:43:36 +0000 |
commit | ea3bc19b9e6b236ca38c6bf506229fd41e89d6ad (patch) | |
tree | 46b2cfeca7a735ae33b314023675f3aed0d47d9f /src | |
parent | 5b1fde4da6b09fa407b547fcd40e474f6f4d25fc (diff) |
Added the mxh lookup type for dnsdb lookups.
Diffstat (limited to 'src')
-rw-r--r-- | src/ACKNOWLEDGMENTS | 3 | ||||
-rw-r--r-- | src/src/dns.c | 6 | ||||
-rw-r--r-- | src/src/exim.h | 6 | ||||
-rw-r--r-- | src/src/lookups/dnsdb.c | 38 |
4 files changed, 36 insertions, 17 deletions
diff --git a/src/ACKNOWLEDGMENTS b/src/ACKNOWLEDGMENTS index 4ca8ffbb7..fe092c448 100644 --- a/src/ACKNOWLEDGMENTS +++ b/src/ACKNOWLEDGMENTS @@ -1,4 +1,4 @@ -$Cambridge: exim/src/ACKNOWLEDGMENTS,v 1.6 2004/11/24 14:38:13 ph10 Exp $ +$Cambridge: exim/src/ACKNOWLEDGMENTS,v 1.7 2004/11/24 15:43:36 ph10 Exp $ EXIM ACKNOWLEDGEMENTS @@ -122,6 +122,7 @@ Tony Finch Expansion extensions Timezone patch for exiwhat Patch for more daemon exiwhat information Patch for -dd + Patch for mxh lookup type in dnsdb Giuliano Gavazzi Patches for OSX compilation Dominic Germain Patch for exiqgrep MacOS X bug Oliver Gorwits $load_average patch diff --git a/src/src/dns.c b/src/src/dns.c index a5a154741..e80b1c122 100644 --- a/src/src/dns.c +++ b/src/src/dns.c @@ -1,4 +1,4 @@ -/* $Cambridge: exim/src/src/dns.c,v 1.2 2004/11/19 09:45:54 ph10 Exp $ */ +/* $Cambridge: exim/src/src/dns.c,v 1.3 2004/11/24 15:43:36 ph10 Exp $ */ /************************************************* * Exim - an Internet mail transport agent * @@ -650,6 +650,10 @@ dns_special_lookup(dns_answer *dnsa, uschar *name, int type, { if (type >= 0) return dns_lookup(dnsa, name, type, fully_qualified_name); +/* The "mx hosts only" type doesn't require any special action here */ + +if (type == T_MXH) return dns_lookup(dnsa, name, T_MX, fully_qualified_name); + /* Find nameservers for the domain or the nearest enclosing zone, excluding the root servers. */ diff --git a/src/src/exim.h b/src/src/exim.h index 998adc3ea..397a13687 100644 --- a/src/src/exim.h +++ b/src/src/exim.h @@ -1,4 +1,4 @@ -/* $Cambridge: exim/src/src/exim.h,v 1.2 2004/11/19 09:45:54 ph10 Exp $ */ +/* $Cambridge: exim/src/src/exim.h,v 1.3 2004/11/24 15:43:36 ph10 Exp $ */ /************************************************* * Exim - an Internet mail transport agent * @@ -279,9 +279,11 @@ header files. I don't suppose they have T_SRV either. */ #endif /* We use the private type T_ZNS for retrieving the nameservers for the -enclosing zone of a domain. */ +enclosing zone of a domain, and the private type T_MXH for retrieving +the MX hostnames only (without their priorities). */ #define T_ZNS (-1) +#define T_MXH (-2) /* The resolv.h header defines __P(x) on some Solaris 2.5.1 systems (without checking that it is already defined, in fact). This conflicts with other diff --git a/src/src/lookups/dnsdb.c b/src/src/lookups/dnsdb.c index 22a9de4f4..29a36081e 100644 --- a/src/src/lookups/dnsdb.c +++ b/src/src/lookups/dnsdb.c @@ -1,4 +1,4 @@ -/* $Cambridge: exim/src/src/lookups/dnsdb.c,v 1.3 2004/11/19 15:18:57 ph10 Exp $ */ +/* $Cambridge: exim/src/src/lookups/dnsdb.c,v 1.4 2004/11/24 15:43:36 ph10 Exp $ */ /************************************************* * Exim - an Internet mail transport agent * @@ -32,6 +32,7 @@ static char *type_names[] = { #endif "cname", "mx", + "mxh", "ns", "ptr", "srv", @@ -49,6 +50,7 @@ static int type_values[] = { #endif T_CNAME, T_MX, + T_MXH, /* Private type for "MX hostnames" */ T_NS, T_PTR, T_SRV, @@ -184,6 +186,8 @@ while ((domain = string_nextinlist(&keystring, &sep, buffer, sizeof(buffer))) != NULL) { uschar rbuffer[256]; + int searchtype = (type == T_ZNS)? T_NS : /* record type we want */ + (type == T_MXH)? T_MX : type; /* If the type is PTR, we have to construct the relevant magic lookup key. This code is now in a separate function. */ @@ -196,24 +200,25 @@ while ((domain = string_nextinlist(&keystring, &sep, buffer, sizeof(buffer))) DEBUG(D_lookup) debug_printf("dnsdb key: %s\n", domain); - /* Do the lookup and sort out the result. We use the special - lookup function that knows about pseudo types like "zns". If the lookup - fails, continue with the next domain. */ + /* Do the lookup and sort out the result. There are two special types that + are handled specially: T_ZNS and T_MXH. The former is handled in a special + lookup function so that the facility could be used from other parts of the + Exim code. The latter affects only what happens later on in this function, + but for tidiness it is handled in a similar way. If the lookup fails, + continue with the next domain. */ rc = dns_special_lookup(&dnsa, domain, type, NULL); if (rc == DNS_NOMATCH || rc == DNS_NODATA) continue; if (rc != DNS_SUCCEED) return DEFER; - /* If the lookup was a pseudo-type, change it to the correct type for - searching the returned records; then search for them. */ - - if (type == T_ZNS) type = T_NS; + /* Search the returned records */ + for (rr = dns_next_rr(&dnsa, &dnss, RESET_ANSWERS); rr != NULL; rr = dns_next_rr(&dnsa, &dnss, RESET_NEXT)) { - if (rr->type != type) continue; + if (rr->type != searchtype) continue; /* There may be several addresses from an A6 record. Put the configured separator between them, just as for between several records. However, A6 @@ -245,26 +250,33 @@ while ((domain = string_nextinlist(&keystring, &sep, buffer, sizeof(buffer))) yield = string_cat(yield, &size, &ptr, (uschar *)(rr->data+1), (rr->data)[0]); } - else /* T_CNAME, T_MX, T_NS, T_SRV, T_PTR */ + else /* T_CNAME, T_MX, T_MXH, T_NS, T_SRV, T_PTR */ { + int num; uschar s[264]; uschar *p = (uschar *)(rr->data); - if (type == T_MX) + + if (type == T_MXH) + { + /* mxh ignores the priority number and includes only the hostnames */ + GETSHORT(num, p); /* pointer is advanced */ + } + else if (type == T_MX) { - int num; GETSHORT(num, p); /* pointer is advanced */ sprintf(CS s, "%d ", num); yield = string_cat(yield, &size, &ptr, s, Ustrlen(s)); } else if (type == T_SRV) { - int num, weight, port; + int weight, port; GETSHORT(num, p); /* pointer is advanced */ GETSHORT(weight, p); GETSHORT(port, p); sprintf(CS s, "%d %d %d ", num, weight, port); yield = string_cat(yield, &size, &ptr, s, Ustrlen(s)); } + rc = dn_expand(dnsa.answer, dnsa.answer + dnsa.answerlen, p, (DN_EXPAND_ARG4_TYPE)(s), sizeof(s)); |