Implement support for DNS Recursive Name option and use obtained
information to configure DNS resolver.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
There's nothing in RFC 2131 or RFC 8415 that would mandate the DHCP
server to reply with a source port set to the IANA assigned one, and
some servers seem to send responses with some arbitrary source port set.
Therefore, make Zephyr's DHCP client implementation more permissive,
accepting packets with a source port set to a different port than the
IANA assigned server port.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
When writing to a time resource, the logic was incorrect when validation
was enabled for the resource - when determining the actual underlying data
type we should compare against the data buffer length and not the
validation buffer length.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
The mDNS probing is described in RFC 6762 chapter 8.1.
The code will send an unsolicited mDNS query to network and
will check if there are existing hosts with the same name.
If there are, then the mDNS responder will not respond to
queries it is configured to use.
Fixes#84333
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Allow user to specify the network interface where the query should
be sent, but only if the user has supplied the DNS servers in sockaddr
list. If user has specified a DNS servers in a string list, then the
possible network interface is taken from the string.
The reason for this is that it is not possible to add network interface
to the sockaddr list so an extra parameter is needed.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Allow user to specify socket service struct and port number so
that DNS servers specified in Kconfig etc are not used. This way
we can send a DNS query to arbitrary address without it affecting
the system configuration.
This is used in mDNS probing so that that mDNS responder can send
probe message and not change / configure system global DNS config.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Introduce dns_resolve_name_internal() that allows resolving a name
and not use DNS cache if caching is enabled.
This is needed in mDNS probing (RFC 6762 chapter 8.1) which needs
to send a mDNS query and not get any results from cache.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Building with clang warns:
subsys/net/lib/http/http_hpack.c:21:20: error: unused function
'http_hpack_key_is_dynamic' [-Werror,-Wunused-function]
static inline bool http_hpack_key_is_dynamic(uint32_t key)
^
Signed-off-by: Tom Hughes <tomhughes@chromium.org>
The coap_client.h header won't build if included from c++ file:
error: expected primary-expression before ‘.’ token
.value[0] = coap_bytes_to_block_size(CONFIG_COAP_CLIENT_BLOCK_SIZE),
Therefore move the actual function implementation to the library C file
to prevent this.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
option struct was uninitialized in insert_option() function
during encode_options() call when the while loop wasn't
executed before.
Signed-off-by: Jakub Witowski <jakub.witowski9302@gmail.com>
The hdr_len was uninitialized when none of if-else
conditions were met in decode_delta() function.
Signed-off-by: Jakub Witowski <jakub.witowski9302@gmail.com>
From the MQTT-SN spec:
6.5 Topic Name Registration Procedure
...
At any point in time a client may have only one
REGISTER message outstanding, i.e. it has to wait
for a REGACK message before it can register another
topic name.
...
6.9 Client’s Topic Subscribe/Un-subscribe Procedure
...
As for the REGISTER procedure, a client may have only
one SUBSCRIBE or one UNSUBCRIBE transaction open at a time.
...
Until now, the library did not comply with these requirements.
An additional "waiting" state for topics was introduced:
REGISTER, SUBSCRIBE and UNSUBSCRIBE as an extra step before
switching to REGISTERING, SUBSCRIBING and UNSUBSCRIBING. The
library now makes sure that only one topic can be REGISTERING
and only one topic can be in either SUBSCRIBING or UNSUBSCRIBING.
Additionally, requesting to UNSUBSCRIBE is now denied if the topic
is not yet SUBSCRIBED, to avoid weird race conditions.
Also, added two tests that verify this behavior.
This fixes#84644
Signed-off-by: Rene Beckmann <rene.bckmnn@gmail.com>
Add word 'by' to function names to clarify which is the thing that
is found and which is the thing that is searched for. For example,
mqtt_sn_topic_find_name was renamed to mqtt_sn_topic_find_by_name
because the function does not find the name but finds a topic by
its name.
Signed-off-by: Rene Beckmann <rene.bckmnn@gmail.com>
When HTTP 101 Switching Protocols response is received, force the HTTP
parser to ignore any potential message body payload (which should
already belong to the new protocol).
This is usually not an issue, as Switching Protocols reply should
contain headers only, however it's been observed that some servers
specify chunked transfer-encoding header which tricks the parser
to wait for payload event though it never arrives.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Print interface status information for "net iface" command.
This is useful information when debugging connectivity issues.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
It might happen now after the commit 8519fa1627 ("net: socket service
resets its restart flag") that the event has disappeared before we
call the work, if that happens we must not bail out but restart
the service.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Just ignore any EALREADY error returned when trying to register a
DNS dispatcher. This could happen if trying to init things when the
interface comes up and we have already initialized the dispatcher.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
The DNS_EAI_SYSTEM error value tells that the errno value
contains the actual system error value. So set the errno
properly when there is a system error.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Feed the dispatcher context to dispatcher callbacks instead of
resolver or responder context. The callback can then use the
proper context because the dispatcher context contains those
two context. This allows dispatcher callback to utilize all the
information (like interface etc) stored in dispatcher context.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
As the zsock_recv_dgram() is rather large, remove the inline
keyword from it and let compiler to decide what to do with it.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Print the socket descriptor and interface after bounding it
successfully in order to help to figure out what sockets are
bind to one specific interface.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Restore only the socket descriptor that we marked as -1 after running
the work related to that socket. Earlier we tried to restore the whole
global array of descriptors which could go wrong and is not needed
as we only support synchronous work.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
The variable block_len in function coap_next_block_for_option()
can be used uninitialized in case of empty packet in
coap_packet_get_payload(). Mute the compiler warning with
default value of 0.
Signed-off-by: Dave Lacerte <lacerte.dave@hydroquebec.com>
Tickless mode is refactored to use zvfs_eventfd,
but the Kconfig dependencies were not updated.
Signed-off-by: Seppo Takalo <seppo.takalo@nordicsemi.no>
The socket service restarts whenever a new socket is registered.
This is triggered via zvfs_eventfd_write(ctx.events[0].fd, 1),
but the restart flag (ctx.events[0].revents) is not properly cleared,
causing unintended repeated restarts and skipped socket processing.
Detecting socket restart is done after the socket fd has processed its
data, so the socket doesn't lose its data. Ensure the socket service
clears its restart flag (ctx.events[0].revents = 0) immediately after
detecting a restart event, preventing unnecessary restarts.
Fixes#81813
Signed-off-by: Dominic Moffat <dom@illysky.com>
The current DNS caching logic is not aware of the IP address version.
If there is a cached address for a query, the caller of
dns_get_addr_info() will receive that address, even if it is not the
same version as the caller requested. For example:
- dns_get_addr_info() is called to resolve an IPv4 address
- the DNS client caches the IPv4 address that was received
- dns_get_addr_info() is called to resolve an IPv6 address
- the DNS client sees that there is a cached IPv4 address for the
given query
- the DNS client does not check that the cached address is of the
requested version (IPv6)
- the cached IPv4 address is returned from dns_get_addr_info()
This changes the DNS client to check IP address version when searching
cached addresses.
Signed-off-by: Noah Olson <noah@wavelynx.com>
The offset in post-write callback is incorrect for TLV format as
the first data block contain TLV header. This fix is replacing
reamaning for offset in opaque context struct and passing it to
post-write and validation callback.
The fix also corrects the offset in pull context as it was pointing
at the end of the block processed data and not on the block context
prior to processing.
Signed-off-by: Dave Lacerte <lacerte.dave@hydroquebec.com>
lwm2m_gw_handle_req() function logic expects that at least one URI
option was found, therefore add an extra check to return the function
early if that isn't the case.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
If VLAN count is set to 0, then only priority tagged VLAN frames
that have tag value 0 can be received. Also this means that VLAN
interfaces are not created which can save memory if you do not need
to receive any other VLAN frames than those tagged with value 0.
Fixes#84023
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
`lwm2m_send_message_async` returns critical errors which are not handled in
many cases. The function can return -ENOMEM, -EPERM or other error codes
from functions called.
Signed-off-by: Marc Lasch <marc.lasch@husqvarnagroup.com>
The event monitor did not handled IPv4 multicast address
addition or deletion information.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
To simplify debugging what event code is missing from the
events shell module, print also event id for the for unknown
events. This way it is a bit easier to figure out what the
unknown event is.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Print Ethernet carrier on/off and VLAN tag enabled/disabled
status when monitoring events.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
The recvmsg() function should not modify the buffer configuration
provided in struct msghdr, such behavior is not specified in the POSIX
function description, nor is it consistent with well-known behavior of
this function in Linux.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
As the CoAP library was refactored to handle response
messages as stated by RFC, the LwM2M message handling was
untouched.
LwM2M Notify handling is relying on response callback
to be called, but as per CoAP RFC an empty Ack is not
actually a response and the callback was not called anymore.
Fix the issue by calling the response callback when
we receive an empty ack for any confirmable response
messages.
This should not affect any handling of CoAP requests.
Signed-off-by: Seppo Takalo <seppo.takalo@nordicsemi.no>
Check if NET_DHCPV4_SERVER_OPTION_DNS_ADDRESS is set before using it to
set the DNS option in DHCP responses. This avoids sending a client a DNS
server of 0.0.0.0.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Add a Kconfig option to skip the router DHCP server option. This can be
useful to avoid having the client trying to forward all its traffic to
the embedded device.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
If we have received data to the accepted socket, then release
those before removing the accepted socket. This is a rare event
as it requires that we get multiple simultaneous connections
and there is a failure before the socket accept is called by
the application.
For example one such scenario is when HTTP server receives multiple
connection attempts at the same time, and the server poll fails
before socket accept is called. This leads to buffer leak as the
socket close is not called for the accepted socket because the
accepted is not yet created from application point of view.
The solution is to flush the received queue of the accepted socket
before removing the actual accepted socket.
Fixes#84538
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
A _res_fallback parameter to HTTP_SERVICE_DEFINE is added to optionally
specify a fallback resource detail, which will be served if no other
resource matches the URL.
Signed-off-by: Matt Rodgers <mrodgers@witekio.com>
Do not free the slot when cred buf is NULL.
If the TLS credential storage backend does not have a buffer pointer
to the TLS credential, then the buffer pointer can be NULL.
This may happen with an out-of-tree TLS credential storage backend.
In this case where credential buffer is NULL find_ref_slot retrieves
a new slot, and then tries to free it, causing a crash.
Signed-off-by: Joakim Andersson <joerchan@gmail.com>
Fixes#84198.
If a '?' character is used as part of a wildcard resource, do not treat
this as the end of the string when comparing with a path from the HTTP
request. Only the path from the HTTP request may be terminated by '?'
(in the case of a request with query parameters).
Signed-off-by: Matt Rodgers <mrodgers@witekio.com>
