diff options
Diffstat (limited to 'src/resolve')
| -rw-r--r-- | src/resolve/resolved-dns-packet.c | 51 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-question.c | 40 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-question.h | 2 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-scope.c | 57 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-scope.h | 3 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-transaction.c | 192 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-transaction.h | 10 | ||||
| -rw-r--r-- | src/resolve/resolved-manager.c | 46 | ||||
| -rw-r--r-- | src/resolve/resolved-manager.h | 1 |
9 files changed, 209 insertions, 193 deletions
diff --git a/src/resolve/resolved-dns-packet.c b/src/resolve/resolved-dns-packet.c index 649e8b74e1..39951a362c 100644 --- a/src/resolve/resolved-dns-packet.c +++ b/src/resolve/resolved-dns-packet.c @@ -508,23 +508,21 @@ static int dns_packet_append_type_window(DnsPacket *p, uint8_t window, uint8_t l assert(p); assert(types); + assert(length > 0); saved_size = p->size; - if (length != 0) { - - r = dns_packet_append_uint8(p, window, NULL); - if (r < 0) - goto fail; + r = dns_packet_append_uint8(p, window, NULL); + if (r < 0) + goto fail; - r = dns_packet_append_uint8(p, length, NULL); - if (r < 0) - goto fail; + r = dns_packet_append_uint8(p, length, NULL); + if (r < 0) + goto fail; - r = dns_packet_append_blob(p, types, length, NULL); - if (r < 0) - goto fail; - } + r = dns_packet_append_blob(p, types, length, NULL); + if (r < 0) + goto fail; if (start) *start = saved_size; @@ -538,7 +536,7 @@ fail: static int dns_packet_append_types(DnsPacket *p, Bitmap *types, size_t *start) { Iterator i; uint8_t window = 0; - uint8_t len = 0; + uint8_t entry = 0; uint8_t bitmaps[32] = {}; unsigned n; size_t saved_size; @@ -550,30 +548,24 @@ static int dns_packet_append_types(DnsPacket *p, Bitmap *types, size_t *start) { saved_size = p->size; BITMAP_FOREACH(n, types, i) { - uint8_t entry; - assert(n <= 0xffff); - if ((n << 8) != window) { - r = dns_packet_append_type_window(p, window, len, bitmaps, NULL); + if ((n >> 8) != window && bitmaps[entry / 8] != 0) { + r = dns_packet_append_type_window(p, window, entry / 8 + 1, bitmaps, NULL); if (r < 0) goto fail; - if (len > 0) { - len = 0; - zero(bitmaps); - } + zero(bitmaps); } - window = n << 8; - len ++; + window = n >> 8; entry = n & 255; bitmaps[entry / 8] |= 1 << (7 - (entry % 8)); } - r = dns_packet_append_type_window(p, window, len, bitmaps, NULL); + r = dns_packet_append_type_window(p, window, entry / 8 + 1, bitmaps, NULL); if (r < 0) goto fail; @@ -1164,6 +1156,7 @@ static int dns_packet_read_type_window(DnsPacket *p, Bitmap **types, size_t *sta uint8_t window; uint8_t length; const uint8_t *bitmap; + uint8_t bit = 0; unsigned i; bool found = false; size_t saved_rindex; @@ -1195,10 +1188,10 @@ static int dns_packet_read_type_window(DnsPacket *p, Bitmap **types, size_t *sta for (i = 0; i < length; i++) { uint8_t bitmask = 1 << 7; - uint8_t bit = 0; if (!bitmap[i]) { found = false; + bit += 8; continue; } @@ -1673,8 +1666,12 @@ int dns_packet_read_rr(DnsPacket *p, DnsResourceRecord **ret, size_t *start) { if (r < 0) goto fail; - /* NSEC RRs with empty bitmpas makes no sense, but the RFC does not explicitly forbid them - so we allow it */ + /* The types bitmap must contain at least the NSEC record itself, so an empty bitmap means + something went wrong */ + if (bitmap_isclear(rr->nsec.types)) { + r = -EBADMSG; + goto fail; + } break; diff --git a/src/resolve/resolved-dns-question.c b/src/resolve/resolved-dns-question.c index 4d71f5e3d4..0efe740d1a 100644 --- a/src/resolve/resolved-dns-question.c +++ b/src/resolve/resolved-dns-question.c @@ -188,6 +188,46 @@ int dns_question_is_superset(DnsQuestion *q, DnsQuestion *other) { return 1; } +int dns_question_contains(DnsQuestion *a, DnsResourceKey *k) { + unsigned j; + int r; + + assert(a); + assert(k); + + for (j = 0; j < a->n_keys; j++) { + r = dns_resource_key_equal(a->keys[j], k); + if (r != 0) + return r; + } + + return 0; +} + +int dns_question_is_equal(DnsQuestion *a, DnsQuestion *b) { + unsigned j; + int r; + + assert(a); + assert(b); + + /* Checks if all keys in a are also contained b, and vice versa */ + + for (j = 0; j < a->n_keys; j++) { + r = dns_question_contains(b, a->keys[j]); + if (r <= 0) + return r; + } + + for (j = 0; j < b->n_keys; j++) { + r = dns_question_contains(a, b->keys[j]); + if (r <= 0) + return r; + } + + return 1; +} + int dns_question_cname_redirect(DnsQuestion *q, const char *name, DnsQuestion **ret) { _cleanup_(dns_question_unrefp) DnsQuestion *n = NULL; bool same = true; diff --git a/src/resolve/resolved-dns-question.h b/src/resolve/resolved-dns-question.h index 4ba2fe9f0e..fc98677798 100644 --- a/src/resolve/resolved-dns-question.h +++ b/src/resolve/resolved-dns-question.h @@ -43,6 +43,8 @@ int dns_question_matches_rr(DnsQuestion *q, DnsResourceRecord *rr); int dns_question_matches_cname(DnsQuestion *q, DnsResourceRecord *rr); int dns_question_is_valid(DnsQuestion *q); int dns_question_is_superset(DnsQuestion *q, DnsQuestion *other); +int dns_question_contains(DnsQuestion *a, DnsResourceKey *k); +int dns_question_is_equal(DnsQuestion *a, DnsQuestion *b); int dns_question_cname_redirect(DnsQuestion *q, const char *name, DnsQuestion **ret); diff --git a/src/resolve/resolved-dns-scope.c b/src/resolve/resolved-dns-scope.c index 0aab1e35d3..927a1ddc26 100644 --- a/src/resolve/resolved-dns-scope.c +++ b/src/resolve/resolved-dns-scope.c @@ -125,18 +125,17 @@ void dns_scope_next_dns_server(DnsScope *s) { manager_next_dns_server(s->manager); } -int dns_scope_emit(DnsScope *s, DnsTransaction *t, DnsPacket *p, DnsServer **server) { - DnsServer *srv = NULL; +int dns_scope_emit(DnsScope *s, int fd, DnsPacket *p) { union in_addr_union addr; int ifindex = 0, r; int family; uint16_t port; uint32_t mtu; - int fd; assert(s); assert(p); assert(p->protocol == s->protocol); + assert((s->protocol == DNS_PROTOCOL_DNS) != (fd < 0)); if (s->link) { mtu = s->link->mtu; @@ -148,28 +147,15 @@ int dns_scope_emit(DnsScope *s, DnsTransaction *t, DnsPacket *p, DnsServer **ser if (DNS_PACKET_QDCOUNT(p) > 1) return -EOPNOTSUPP; - srv = dns_scope_get_dns_server(s); - if (!srv) - return -ESRCH; - - family = srv->family; - addr = srv->address; - port = 53; - if (p->size > DNS_PACKET_UNICAST_SIZE_MAX) return -EMSGSIZE; if (p->size + UDP_PACKET_HEADER_SIZE > mtu) return -EMSGSIZE; - if (family == AF_INET) - fd = transaction_dns_ipv4_fd(t); - else if (family == AF_INET6) - fd = transaction_dns_ipv6_fd(t); - else - return -EAFNOSUPPORT; - if (fd < 0) - return fd; + r = manager_write(s->manager, fd, p); + if (r < 0) + return r; } else if (s->protocol == DNS_PROTOCOL_LLMNR) { @@ -192,20 +178,17 @@ int dns_scope_emit(DnsScope *s, DnsTransaction *t, DnsPacket *p, DnsServer **ser return -EAFNOSUPPORT; if (fd < 0) return fd; + + r = manager_send(s->manager, fd, ifindex, family, &addr, port, p); + if (r < 0) + return r; } else return -EAFNOSUPPORT; - r = manager_send(s->manager, fd, ifindex, family, &addr, port, p); - if (r < 0) - return r; - - if (server) - *server = srv; - return 1; } -int dns_scope_tcp_socket(DnsScope *s, int family, const union in_addr_union *address, uint16_t port, DnsServer **server) { +static int dns_scope_socket(DnsScope *s, int type, int family, const union in_addr_union *address, uint16_t port, DnsServer **server) { DnsServer *srv = NULL; _cleanup_close_ int fd = -1; union sockaddr_union sa = {}; @@ -249,13 +232,15 @@ int dns_scope_tcp_socket(DnsScope *s, int family, const union in_addr_union *add return -EAFNOSUPPORT; } - fd = socket(sa.sa.sa_family, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); + fd = socket(sa.sa.sa_family, type|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); if (fd < 0) return -errno; - r = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &one, sizeof(one)); - if (r < 0) - return -errno; + if (type == SOCK_STREAM) { + r = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &one, sizeof(one)); + if (r < 0) + return -errno; + } if (s->link) { uint32_t ifindex = htobe32(s->link->ifindex); @@ -298,6 +283,14 @@ int dns_scope_tcp_socket(DnsScope *s, int family, const union in_addr_union *add return ret; } +int dns_scope_udp_dns_socket(DnsScope *s, DnsServer **server) { + return dns_scope_socket(s, SOCK_DGRAM, AF_UNSPEC, NULL, 53, server); +} + +int dns_scope_tcp_socket(DnsScope *s, int family, const union in_addr_union *address, uint16_t port, DnsServer **server) { + return dns_scope_socket(s, SOCK_STREAM, family, address, port, server); +} + DnsScopeMatch dns_scope_good_domain(DnsScope *s, int ifindex, uint64_t flags, const char *domain) { char **i; @@ -687,7 +680,7 @@ static int on_conflict_dispatch(sd_event_source *es, usec_t usec, void *userdata return 0; } - r = dns_scope_emit(scope, NULL, p, NULL); + r = dns_scope_emit(scope, -1, p); if (r < 0) log_debug_errno(r, "Failed to send conflict packet: %m"); } diff --git a/src/resolve/resolved-dns-scope.h b/src/resolve/resolved-dns-scope.h index 21a160ea39..29479ad550 100644 --- a/src/resolve/resolved-dns-scope.h +++ b/src/resolve/resolved-dns-scope.h @@ -65,8 +65,9 @@ struct DnsScope { int dns_scope_new(Manager *m, DnsScope **ret, Link *l, DnsProtocol p, int family); DnsScope* dns_scope_free(DnsScope *s); -int dns_scope_emit(DnsScope *s, DnsTransaction *t, DnsPacket *p, DnsServer **server); +int dns_scope_emit(DnsScope *s, int fd, DnsPacket *p); int dns_scope_tcp_socket(DnsScope *s, int family, const union in_addr_union *address, uint16_t port, DnsServer **server); +int dns_scope_udp_dns_socket(DnsScope *s, DnsServer **server); DnsScopeMatch dns_scope_good_domain(DnsScope *s, int ifindex, uint64_t flags, const char *domain); int dns_scope_good_key(DnsScope *s, DnsResourceKey *key); diff --git a/src/resolve/resolved-dns-transaction.c b/src/resolve/resolved-dns-transaction.c index 3d46c99df8..8a93b265c6 100644 --- a/src/resolve/resolved-dns-transaction.c +++ b/src/resolve/resolved-dns-transaction.c @@ -39,10 +39,8 @@ DnsTransaction* dns_transaction_free(DnsTransaction *t) { dns_packet_unref(t->received); dns_answer_unref(t->cached); - sd_event_source_unref(t->dns_ipv4_event_source); - sd_event_source_unref(t->dns_ipv6_event_source); - safe_close(t->dns_ipv4_fd); - safe_close(t->dns_ipv6_fd); + sd_event_source_unref(t->dns_event_source); + safe_close(t->dns_fd); dns_server_unref(t->server); dns_stream_free(t->stream); @@ -94,7 +92,7 @@ int dns_transaction_new(DnsTransaction **ret, DnsScope *s, DnsQuestion *q) { if (!t) return -ENOMEM; - t->dns_ipv4_fd = t->dns_ipv6_fd = -1; + t->dns_fd = -1; t->question = dns_question_ref(q); @@ -245,7 +243,7 @@ static int on_stream_complete(DnsStream *s, int error) { } static int dns_transaction_open_tcp(DnsTransaction *t) { - _cleanup_(dns_server_unrefp) DnsServer *server = NULL; + DnsServer *server = NULL; _cleanup_close_ int fd = -1; int r; @@ -310,6 +308,16 @@ static int dns_transaction_open_tcp(DnsTransaction *t) { return 0; } +static void dns_transaction_next_dns_server(DnsTransaction *t) { + assert(t); + + t->server = dns_server_unref(t->server); + t->dns_event_source = sd_event_source_unref(t->dns_event_source); + t->dns_fd = safe_close(t->dns_fd); + + dns_scope_next_dns_server(t->scope); +} + void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p) { int r; @@ -342,24 +350,6 @@ void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p) { } } - if (t->scope->protocol == DNS_PROTOCOL_DNS) { - - /* For DNS we are fine with accepting packets on any - * interface, but the source IP address must be the - * one of the DNS server we queried */ - - assert(t->server); - - if (t->server->family != p->family) - return; - - if (!in_addr_equal(p->family, &p->sender, &t->server->address)) - return; - - if (p->sender_port != 53) - return; - } - if (t->received != p) { dns_packet_unref(t->received); t->received = dns_packet_ref(p); @@ -396,7 +386,7 @@ void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p) { } /* On DNS, couldn't send? Try immediately again, with a new server */ - dns_scope_next_dns_server(t->scope); + dns_transaction_next_dns_server(t); r = dns_transaction_go(t); if (r < 0) { @@ -416,8 +406,8 @@ void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p) { } /* Only consider responses with equivalent query section to the request */ - if (!dns_question_is_superset(p->question, t->question) || - !dns_question_is_superset(t->question, p->question)) { + r = dns_question_is_equal(p->question, t->question); + if (r <= 0) { dns_transaction_complete(t, DNS_TRANSACTION_INVALID_REPLY); return; } @@ -431,6 +421,56 @@ void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p) { dns_transaction_complete(t, DNS_TRANSACTION_FAILURE); } +static int on_dns_packet(sd_event_source *s, int fd, uint32_t revents, void *userdata) { + _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL; + DnsTransaction *t = userdata; + int r; + + assert(t); + assert(t->scope); + + r = manager_recv(t->scope->manager, fd, DNS_PROTOCOL_DNS, &p); + if (r <= 0) + return r; + + if (dns_packet_validate_reply(p) > 0 && + DNS_PACKET_ID(p) == t->id) { + dns_transaction_process_reply(t, p); + } else + log_debug("Invalid DNS packet."); + + return 0; +} + +static int dns_transaction_emit(DnsTransaction *t) { + int r; + + assert(t); + + if (t->scope->protocol == DNS_PROTOCOL_DNS && !t->server) { + DnsServer *server = NULL; + _cleanup_close_ int fd = -1; + + fd = dns_scope_udp_dns_socket(t->scope, &server); + if (fd < 0) + return fd; + + r = sd_event_add_io(t->scope->manager->event, &t->dns_event_source, fd, EPOLLIN, on_dns_packet, t); + if (r < 0) + return r; + + t->dns_fd = fd; + fd = -1; + t->server = dns_server_ref(server); + } + + r = dns_scope_emit(t->scope, t->dns_fd, t->sent); + if (r < 0) + return r; + + return 0; +} + static int on_transaction_timeout(sd_event_source *s, usec_t usec, void *userdata) { DnsTransaction *t = userdata; int r; @@ -439,7 +479,7 @@ static int on_transaction_timeout(sd_event_source *s, usec_t usec, void *userdat assert(t); /* Timeout reached? Try again, with a new server */ - dns_scope_next_dns_server(t->scope); + dns_transaction_next_dns_server(t); r = dns_transaction_go(t); if (r < 0) @@ -516,7 +556,6 @@ int dns_transaction_go(DnsTransaction *t) { } t->n_attempts++; - t->server = dns_server_unref(t->server); t->received = dns_packet_unref(t->received); t->cached = dns_answer_unref(t->cached); t->cached_rcode = 0; @@ -596,13 +635,9 @@ int dns_transaction_go(DnsTransaction *t) { * always be made via TCP on LLMNR */ r = dns_transaction_open_tcp(t); } else { - DnsServer *server; - /* Try via UDP, and if that fails due to large size try via TCP */ - r = dns_scope_emit(t->scope, t, t->sent, &server); - if (r >= 0) - t->server = dns_server_ref(server); - else if (r == -EMSGSIZE) + r = dns_transaction_emit(t); + if (r == -EMSGSIZE) r = dns_transaction_open_tcp(t); } if (r == -ESRCH) { @@ -616,7 +651,7 @@ int dns_transaction_go(DnsTransaction *t) { } /* Couldn't send? Try immediately again, with a new server */ - dns_scope_next_dns_server(t->scope); + dns_transaction_next_dns_server(t); return dns_transaction_go(t); } @@ -634,91 +669,6 @@ int dns_transaction_go(DnsTransaction *t) { return 1; } -static int on_dns_packet(sd_event_source *s, int fd, uint32_t revents, void *userdata) { - _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL; - DnsTransaction *t = userdata; - int r; - - assert(t); - assert(t->scope); - - r = manager_recv(t->scope->manager, fd, DNS_PROTOCOL_DNS, &p); - if (r <= 0) - return r; - - if (dns_packet_validate_reply(p) > 0 && - DNS_PACKET_ID(p) == t->id) { - dns_transaction_process_reply(t, p); - } else - log_debug("Invalid DNS packet."); - - return 0; -} - -int transaction_dns_ipv4_fd(DnsTransaction *t) { - const int one = 1; - int r; - - assert(t); - assert(t->scope); - assert(t->scope->manager); - - if (t->dns_ipv4_fd >= 0) - return t->dns_ipv4_fd; - - t->dns_ipv4_fd = socket(AF_INET, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); - if (t->dns_ipv4_fd < 0) - return -errno; - - r = setsockopt(t->dns_ipv4_fd, IPPROTO_IP, IP_PKTINFO, &one, sizeof(one)); - if (r < 0) { - r = -errno; - goto fail; - } - - r = sd_event_add_io(t->scope->manager->event, &t->dns_ipv4_event_source, t->dns_ipv4_fd, EPOLLIN, on_dns_packet, t); - if (r < 0) - goto fail; - - return t->dns_ipv4_fd; - -fail: - t->dns_ipv4_fd = safe_close(t->dns_ipv4_fd); - return r; -} - -int transaction_dns_ipv6_fd(DnsTransaction *t) { - const int one = 1; - int r; - - assert(t); - assert(t->scope); - assert(t->scope->manager); - - if (t->dns_ipv6_fd >= 0) - return t->dns_ipv6_fd; - - t->dns_ipv6_fd = socket(AF_INET6, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); - if (t->dns_ipv6_fd < 0) - return -errno; - - r = setsockopt(t->dns_ipv6_fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &one, sizeof(one)); - if (r < 0) { - r = -errno; - goto fail; - } - - r = sd_event_add_io(t->scope->manager->event, &t->dns_ipv6_event_source, t->dns_ipv6_fd, EPOLLIN, on_dns_packet, t); - if (r < 0) - goto fail; - - return t->dns_ipv6_fd; - -fail: - t->dns_ipv6_fd = safe_close(t->dns_ipv6_fd); - return r; -} - static const char* const dns_transaction_state_table[_DNS_TRANSACTION_STATE_MAX] = { [DNS_TRANSACTION_NULL] = "null", [DNS_TRANSACTION_PENDING] = "pending", diff --git a/src/resolve/resolved-dns-transaction.h b/src/resolve/resolved-dns-transaction.h index 87f342ca11..a8f4267bc8 100644 --- a/src/resolve/resolved-dns-transaction.h +++ b/src/resolve/resolved-dns-transaction.h @@ -61,11 +61,8 @@ struct DnsTransaction { sd_event_source *timeout_event_source; unsigned n_attempts; - int dns_ipv4_fd; - int dns_ipv6_fd; - - sd_event_source *dns_ipv4_event_source; - sd_event_source *dns_ipv6_event_source; + int dns_fd; + sd_event_source *dns_event_source; /* the active server */ DnsServer *server; @@ -95,9 +92,6 @@ int dns_transaction_go(DnsTransaction *t); void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p); void dns_transaction_complete(DnsTransaction *t, DnsTransactionState state); -int transaction_dns_ipv4_fd(DnsTransaction *t); -int transaction_dns_ipv6_fd(DnsTransaction *t); - const char* dns_transaction_state_to_string(DnsTransactionState p) _const_; DnsTransactionState dns_transaction_state_from_string(const char *s) _pure_; diff --git a/src/resolve/resolved-manager.c b/src/resolve/resolved-manager.c index 17de14bae1..5be01d3cb8 100644 --- a/src/resolve/resolved-manager.c +++ b/src/resolve/resolved-manager.c @@ -912,10 +912,12 @@ int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret) { if (p->ifindex == LOOPBACK_IFINDEX) p->ifindex = 0; - /* If we don't know the interface index still, we look for the - * first local interface with a matching address. Yuck! */ - if (p->ifindex <= 0) - p->ifindex = manager_find_ifindex(m, p->family, &p->destination); + if (protocol != DNS_PROTOCOL_DNS) { + /* If we don't know the interface index still, we look for the + * first local interface with a matching address. Yuck! */ + if (p->ifindex <= 0) + p->ifindex = manager_find_ifindex(m, p->family, &p->destination); + } *ret = p; p = NULL; @@ -947,6 +949,42 @@ static int sendmsg_loop(int fd, struct msghdr *mh, int flags) { } } +static int write_loop(int fd, void *message, size_t length) { + int r; + + assert(fd >= 0); + assert(message); + + for (;;) { + if (write(fd, message, length) >= 0) + return 0; + + if (errno == EINTR) + continue; + + if (errno != EAGAIN) + return -errno; + + r = fd_wait_for_event(fd, POLLOUT, SEND_TIMEOUT_USEC); + if (r < 0) + return r; + if (r == 0) + return -ETIMEDOUT; + } +} + +int manager_write(Manager *m, int fd, DnsPacket *p) { + int r; + + log_debug("Sending %s packet with id %u", DNS_PACKET_QR(p) ? "response" : "query", DNS_PACKET_ID(p)); + + r = write_loop(fd, DNS_PACKET_DATA(p), p->size); + if (r < 0) + return r; + + return 0; +} + static int manager_ipv4_send(Manager *m, int fd, int ifindex, const struct in_addr *addr, uint16_t port, DnsPacket *p) { union sockaddr_union sa = { .in.sin_family = AF_INET, diff --git a/src/resolve/resolved-manager.h b/src/resolve/resolved-manager.h index 005f844df2..53b5acb33c 100644 --- a/src/resolve/resolved-manager.h +++ b/src/resolve/resolved-manager.h @@ -119,6 +119,7 @@ void manager_next_dns_server(Manager *m); uint32_t manager_find_mtu(Manager *m); +int manager_write(Manager *m, int fd, DnsPacket *p); int manager_send(Manager *m, int fd, int ifindex, int family, const union in_addr_union *addr, uint16_t port, DnsPacket *p); int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret); |