chiark / gitweb /
resolved: add identifiers for dnssec algorithms
[elogind.git] / src / resolve / resolved-dns-rr.c
index b6a2c04cb51d88c1e749d30859fb94b0ddb28bd1..bc0cbef92e8bfc34521920a8e861816acf277dfc 100644 (file)
@@ -25,6 +25,8 @@
 
 #include "resolved-dns-domain.h"
 #include "resolved-dns-rr.h"
+#include "resolved-dns-packet.h"
+#include "dns-type.h"
 
 DnsResourceKey* dns_resource_key_new(uint16_t class, uint16_t type, const char *name) {
         DnsResourceKey *k;
@@ -180,8 +182,7 @@ int dns_resource_key_to_string(const DnsResourceKey *key, char **ret) {
                 t = tbuf;
         }
 
-        s = strjoin(DNS_RESOURCE_KEY_NAME(key), " ", c, " ", t, NULL);
-        if (!s)
+        if (asprintf(&s, "%s %s %-5s", DNS_RESOURCE_KEY_NAME(key), c, t) < 0)
                 return -ENOMEM;
 
         *ret = s;
@@ -234,30 +235,50 @@ DnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr) {
 
         if (rr->key) {
                 switch(rr->key->type) {
+
+                case DNS_TYPE_SRV:
+                        free(rr->srv.name);
+                        break;
+
                 case DNS_TYPE_PTR:
                 case DNS_TYPE_NS:
                 case DNS_TYPE_CNAME:
+                case DNS_TYPE_DNAME:
                         free(rr->ptr.name);
                         break;
+
                 case DNS_TYPE_HINFO:
                         free(rr->hinfo.cpu);
                         free(rr->hinfo.os);
                         break;
-                case DNS_TYPE_SPF:
+
                 case DNS_TYPE_TXT:
+                case DNS_TYPE_SPF:
                         strv_free(rr->txt.strings);
                         break;
+
                 case DNS_TYPE_SOA:
                         free(rr->soa.mname);
                         free(rr->soa.rname);
                         break;
+
                 case DNS_TYPE_MX:
                         free(rr->mx.exchange);
                         break;
+
+                case DNS_TYPE_SSHFP:
+                        free(rr->sshfp.key);
+                        break;
+
+                case DNS_TYPE_DNSKEY:
+                        free(rr->dnskey.key);
+                        break;
+
                 case DNS_TYPE_LOC:
                 case DNS_TYPE_A:
                 case DNS_TYPE_AAAA:
                         break;
+
                 default:
                         free(rr->generic.data);
                 }
@@ -314,11 +335,24 @@ int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecor
         if (r <= 0)
                 return r;
 
-        switch (a->key->type) {
+        if (a->unparseable != b->unparseable)
+                return 0;
+
+        switch (a->unparseable ? _DNS_TYPE_INVALID : a->key->type) {
+
+        case DNS_TYPE_SRV:
+                r = dns_name_equal(a->srv.name, b->srv.name);
+                if (r <= 0)
+                        return r;
+
+                return a->srv.priority == b->srv.priority &&
+                       a->srv.weight == b->srv.weight &&
+                       a->srv.port == b->srv.port;
 
         case DNS_TYPE_PTR:
         case DNS_TYPE_NS:
         case DNS_TYPE_CNAME:
+        case DNS_TYPE_DNAME:
                 return dns_name_equal(a->ptr.name, b->ptr.name);
 
         case DNS_TYPE_HINFO:
@@ -354,6 +388,7 @@ int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecor
                        a->soa.retry   == b->soa.retry &&
                        a->soa.expire  == b->soa.expire &&
                        a->soa.minimum == b->soa.minimum;
+
         case DNS_TYPE_MX:
                 if (a->mx.priority != b->mx.priority)
                         return 0;
@@ -370,6 +405,19 @@ int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecor
                        a->loc.longitude == b->loc.longitude &&
                        a->loc.altitude == b->loc.altitude;
 
+        case DNS_TYPE_SSHFP:
+                return a->sshfp.algorithm == b->sshfp.algorithm &&
+                       a->sshfp.fptype == b->sshfp.fptype &&
+                       a->sshfp.key_size == b->sshfp.key_size &&
+                       memcmp(a->sshfp.key, b->sshfp.key, a->sshfp.key_size) == 0;
+
+        case DNS_TYPE_DNSKEY:
+                return a->dnskey.zone_key_flag == b->dnskey.zone_key_flag &&
+                       a->dnskey.sep_flag == b->dnskey.sep_flag &&
+                       a->dnskey.algorithm == b->dnskey.algorithm &&
+                       a->dnskey.key_size == b->dnskey.key_size &&
+                       memcmp(a->dnskey.key, b->dnskey.key, a->dnskey.key_size) == 0;
+
         default:
                 return a->generic.size == b->generic.size &&
                         memcmp(a->generic.data, b->generic.data, a->generic.size) == 0;
@@ -407,9 +455,8 @@ static char* format_location(uint32_t latitude, uint32_t longitude, uint32_t alt
         return s;
 }
 
-
 int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
-        _cleanup_free_ char *k = NULL;
+        _cleanup_free_ char *k = NULL, *t = NULL;
         char *s;
         int r;
 
@@ -421,9 +468,21 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
 
         switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) {
 
+        case DNS_TYPE_SRV:
+                r = asprintf(&s, "%s %u %u %u %s",
+                             k,
+                             rr->srv.priority,
+                             rr->srv.weight,
+                             rr->srv.port,
+                             strna(rr->srv.name));
+                if (r < 0)
+                        return -ENOMEM;
+                break;
+
         case DNS_TYPE_PTR:
         case DNS_TYPE_NS:
         case DNS_TYPE_CNAME:
+        case DNS_TYPE_DNAME:
                 s = strjoin(k, " ", rr->ptr.name, NULL);
                 if (!s)
                         return -ENOMEM;
@@ -437,9 +496,7 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
                 break;
 
         case DNS_TYPE_SPF: /* exactly the same as TXT */
-        case DNS_TYPE_TXT: {
-                _cleanup_free_ char *t;
-
+        case DNS_TYPE_TXT:
                 t = strv_join_quoted(rr->txt.strings);
                 if (!t)
                         return -ENOMEM;
@@ -449,7 +506,6 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
                         return -ENOMEM;
 
                 break;
-        }
 
         case DNS_TYPE_A: {
                 _cleanup_free_ char *x = NULL;
@@ -464,18 +520,15 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
                 break;
         }
 
-        case DNS_TYPE_AAAA: {
-                _cleanup_free_ char *x = NULL;
-
-                r = in_addr_to_string(AF_INET6, (const union in_addr_union*) &rr->aaaa.in6_addr, &x);
+        case DNS_TYPE_AAAA:
+                r = in_addr_to_string(AF_INET6, (const union in_addr_union*) &rr->aaaa.in6_addr, &t);
                 if (r < 0)
                         return r;
 
-                s = strjoin(k, " ", x, NULL);
+                s = strjoin(k, " ", t, NULL);
                 if (!s)
                         return -ENOMEM;
                 break;
-        }
 
         case DNS_TYPE_SOA:
                 r = asprintf(&s, "%s %s %s %u %u %u %u %u",
@@ -500,38 +553,67 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
                         return -ENOMEM;
                 break;
 
-        case DNS_TYPE_LOC: {
-                _cleanup_free_ char *loc;
+        case DNS_TYPE_LOC:
                 assert(rr->loc.version == 0);
 
-                loc = format_location(rr->loc.latitude,
-                                      rr->loc.longitude,
-                                      rr->loc.altitude,
-                                      rr->loc.size,
-                                      rr->loc.horiz_pre,
-                                      rr->loc.vert_pre);
-                if (!loc)
+                t = format_location(rr->loc.latitude,
+                                    rr->loc.longitude,
+                                    rr->loc.altitude,
+                                    rr->loc.size,
+                                    rr->loc.horiz_pre,
+                                    rr->loc.vert_pre);
+                if (!t)
                         return -ENOMEM;
 
-                s = strjoin(k, " ", loc, NULL);
+                s = strjoin(k, " ", t, NULL);
                 if (!s)
                         return -ENOMEM;
+                break;
+
+        case DNS_TYPE_SSHFP:
+                t = hexmem(rr->sshfp.key, rr->sshfp.key_size);
+                if (!t)
+                        return -ENOMEM;
 
+                r = asprintf(&s, "%s %u %u %s",
+                             k,
+                             rr->sshfp.algorithm,
+                             rr->sshfp.fptype,
+                             t);
+                if (r < 0)
+                        return -ENOMEM;
                 break;
-        }
 
-        default: {
-                _cleanup_free_ char *x = NULL;
+        case DNS_TYPE_DNSKEY: {
+                const char *alg;
+
+                alg = dnssec_algorithm_to_string(rr->dnskey.algorithm);
 
-                x = hexmem(rr->generic.data, rr->generic.size);
-                if (!x)
+                t = hexmem(rr->dnskey.key, rr->dnskey.key_size);
+                if (!t)
                         return -ENOMEM;
 
-                s = strjoin(k, " ", x, NULL);
+                r = asprintf(&s, "%s %u 3 %.*s%.*u %s",
+                             k,
+                             dnskey_to_flags(rr),
+                             alg ? -1 : 0, alg,
+                             alg ? 0 : 1, alg ? 0u : (unsigned) rr->dnskey.algorithm,
+                             t);
+                if (r < 0)
+                        return -ENOMEM;
+                break;
+        }
+
+        default:
+                t = hexmem(rr->generic.data, rr->generic.size);
+                if (!t)
+                        return -ENOMEM;
+
+                s = strjoin(k, " ", t, NULL);
                 if (!s)
                         return -ENOMEM;
                 break;
-        }}
+        }
 
         *ret = s;
         return 0;
@@ -564,55 +646,3 @@ int dns_class_from_string(const char *s, uint16_t *class) {
 
         return 0;
 }
-
-static const struct {
-        uint16_t type;
-        const char *name;
-} dns_types[] = {
-        { DNS_TYPE_A,     "A"     },
-        { DNS_TYPE_NS,    "NS"    },
-        { DNS_TYPE_CNAME, "CNAME" },
-        { DNS_TYPE_SOA,   "SOA"   },
-        { DNS_TYPE_PTR,   "PTR"   },
-        { DNS_TYPE_HINFO, "HINFO" },
-        { DNS_TYPE_MX,    "MX"    },
-        { DNS_TYPE_TXT,   "TXT"   },
-        { DNS_TYPE_AAAA,  "AAAA"  },
-        { DNS_TYPE_LOC,   "LOC"   },
-        { DNS_TYPE_SRV,   "SRV"   },
-        { DNS_TYPE_SSHFP, "SSHFP" },
-        { DNS_TYPE_SPF,   "SPF"   },
-        { DNS_TYPE_DNAME, "DNAME" },
-        { DNS_TYPE_ANY,   "ANY"   },
-        { DNS_TYPE_OPT,   "OPT"   },
-        { DNS_TYPE_TKEY,  "TKEY"  },
-        { DNS_TYPE_TSIG,  "TSIG"  },
-        { DNS_TYPE_IXFR,  "IXFR"  },
-        { DNS_TYPE_AXFR,  "AXFR"  },
-};
-
-
-const char *dns_type_to_string(uint16_t type) {
-        unsigned i;
-
-        for (i = 0; i < ELEMENTSOF(dns_types); i++)
-                if (dns_types[i].type == type)
-                        return dns_types[i].name;
-
-        return NULL;
-}
-
-int dns_type_from_string(const char *s, uint16_t *type) {
-        unsigned i;
-
-        assert(s);
-        assert(type);
-
-        for (i = 0; i < ELEMENTSOF(dns_types); i++)
-                if (strcaseeq(dns_types[i].name, s)) {
-                        *type = dns_types[i].type;
-                        return 0;
-                }
-
-        return -EINVAL;
-}