Logging v1 has been removed and log_strdup wrapper function is no
longer needed. Removing the function and its use in the tree.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
Return ret error code instead of always returning zero causing
warnings:
...
subsys/net/lib/dns/resolve.c:975:6: warning: variable 'ret' set but
not used [-Wunused-but-set-variable]
int ret = 0;
^
...
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Fix compilation warnings:
...
subsys/net/lib/dns/dns_pack.c:548:6: warning: variable
'remaining_size' set but not used [-Wunused-but-set-variable]
int remaining_size;
^
...
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
In order to bring consistency in-tree, migrate all subsystems code to
the new prefix <zephyr/...>. Note that the conversion has been scripted,
refer to zephyrproject-rtos#45388 for more details.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
According to Kconfig guidelines, boolean prompts must not start with
"Enable...". The following command has been used to automate the changes
in this patch:
sed -i "s/bool \"[Ee]nables\? \(\w\)/bool \"\U\1/g" **/Kconfig*
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
A common pattern here was to take the work item as the subfield of a
containing object. But the contained field is not a k_work, it's a
k_work_delayable.
Things were working only because the work field was first, so the
pointers had the same value. Do things right and fix things to
produce correct code if/when that field ever moves within delayable.
Signed-off-by: Yong Cong Sin <yongcong.sin@gmail.com>
Replace unpacked in6_addr structures with raw buffers in net_ipv6_hdr
struct, to prevent compiler warnings about unaligned access.
Remove __packed parameter from `struct net_6lo_context` since the
structure isn't really serialized.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Replace unpacked in_addr structures with raw buffers in net_ipv4_hdr
struct, to prevent compiler warnings about unaligned access.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
While adding support for service type enumeration, a regression was
introduced which prevented mDNS ptr query responses.
1. There was an off-by-one error with label size checking
2. Valid queries were failing to match in `dns_rec_match()` due to
not checking for either NULL or 0 "wildcard" port
Fixes#39284
Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>
Support DNS-SD Service Type Enumeration in the dns_sd library
and mdns_responder sample application.
For more information, please see Section 9, "Service Type
Enumeration" in RFC 6763.
https://datatracker.ietf.org/doc/html/rfc6763Fixes#38673
Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>
As with IPv6, the mdns and llmnr responders should join their multicast
groups for IPv4 instead of just adding the multicast address to the
interface.
Signed-off-by: Markus Fuchs <markus.fuchs@ch.sauter-bc.com>
This migrates all the current iterable section usages to the external
API, dropping the "Z_" prefix:
Z_ITERABLE_SECTION_ROM
Z_ITERABLE_SECTION_ROM_GC_ALLOWED
Z_ITERABLE_SECTION_RAM
Z_ITERABLE_SECTION_RAM_GC_ALLOWED
Z_STRUCT_SECTION_ITERABLE
Z_STRUCT_SECTION_ITERABLE_ALTERNATE
Z_STRUCT_SECTION_FOREACH
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Check for the address family of the packet when setting the multicast
destination address used in the response. Current code checks either the
query type or the stack configuration, which can result in setting the
wrong type of address for the frame.
Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
Fixed mutli-IP DNS resolution as previously the same IP address was
used to populate all AI entries and added DNS_RESOLVER_AI_MAX_ENTRIES
config entry to define max number of IP addresses per DNS name to be
handled.
Signed-off-by: Ievgen Glinchuk <john.iceblink@gmail.com>
So far there was no dedicated mechanism for replacing DNS servers with
new list. Add dns_resolve_reconfigure() API that allows to achieve that
in a thread-safe manner.
Introduce 3rd state in DNS context lifetime by converting from 'bool
is_used' to 'enum dns_resolve_context_state state'. This new
DEACTIVATING state allows to mark a DNS context as busy and safely close
context without holding lock. Closing DNS context with released lock
prevents deadlock in case net_context_close() has to synchronize with a
separate thread executing handler passed to net_context_recv() (which is
the case for example with ESP-AT WiFi driver).
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
ctx->is_used member seemed to be used sometimes within a mutex acquired
block, sometimes not. Make it consistent by always using it with
acquired mutex.
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Query timeout handler is rescheduled if DNS context mutex is locked. So
far there was no timeout used, which means that work is simply put at
the end of system workqueue. This solves cases when mutex is locked by
any higher priority cooperative threads.
If however mutex was locked in application code within lower priority
thread (which is very likely) and query timeout has expired in the
meantime, then system workqueue is busy looping by calling query timeout
handler and trying to acquire DNS context lock.
Reschedule query timeout handler with 10ms delay, so that all
threads, including those with lower priorities, have a chance to move
forward and release DNS context lock.
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Switch to the new API for delayed work related to DNS queries.
In the previous solution it was assumed that the work item could be
immediately cancelled at the point the query slot was released. This
is not true. We need a secondary condition to record the fact that
the query was completed while the work item was still pending, and an
additional check to detect when the work item completed and the slot
reclaimed.
Also annotate functions to indicate when they require the lock on
query content to be held, add some helpers that abstract core
operations like invoking a callback or releasing a query slot, and fix
some more cases where query slot content was accessed outside of the
new lock infrastructure.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
It is documented that using transient information like whether a work
item is pending or a delayed work item has time left to determine the
state of the work item before subsequent reconfiguration is prone to
race conditions, and known to produce unexpected behavior in the
presence of preemptive threads, SMP, or use of the work item from
interrupts. As a best practice such pre-validation steps should be
avoided unless algorithmically necessary.
All comparisons of remaining delayed time before canceling a delayed
work item in this module appear to be optimizations subject to the
above race conditions. Remove the checks so that only the inherent
race conditions in the implementation of canceling a work item remain.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
This change enables support for DNS service discovery
(RFC 6763) in the mdns_responder service and sample app.
Fixes#29429
Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>
This change adds support for DNS Service Discovery (DNS-SD)
as described in RFC 6763.
Fixes#29099
Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>
Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.
A coccinelle rule is used for this:
@r_const_dev_1
disable optional_qualifier
@
@@
-struct device *
+const struct device *
@r_const_dev_2
disable optional_qualifier
@
@@
-struct device * const
+const struct device *
Fixes#27399
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Add more tests to verify that we discard malformed packets.
In order to simplify the testing, separate message validation to
dns_validate_msg() function in resolve.c. Allow that function to
be called from unit test. This way we can construct invalid DNS
messages in unit test and verify that they are discarded when
needed.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The ANCOUNT has nothing to do with label count so remove the
original while loop and just go through all the labels until
we have read all of them.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This is not possible with valid DNS messages but is possible if
we receive malformed DNS packet.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
-Wimplicit-fallthrough=2 requires a fallthrough comment or a compiler
to tells gcc that this happens intentionally.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
Unit tests were failing to build because random header was included by
kernel_includes.h. The problem is that rand32.h includes a generated
file that is either not generated or not included when building unit
tests. Also, it is better to limit the scope of this file to where it is
used.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
It might happen that while we are waiting for the response
to one of our query, we receive a query to resolve another name.
Previously this would make the current name resolution to fail because
only responses were expected to be received.
Signed-off-by: Léonard Bise <leonard.bise@gmail.com>
As mDNS requests set DNS id to 0, we cannot use it to match
the DNS response packet. In order to allow this functionality,
create a hash from query name and type, and use that together
with DNS id to match request and response.
Fixes#21914
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Use this short header style in all Kconfig files:
# <description>
# <copyright>
# <license>
...
Also change all <description>s from
# Kconfig[.extension] - Foo-related options
to just
# Foo-related options
It's clear enough that it's about Kconfig.
The <description> cleanup was done with this command, along with some
manual cleanup (big letter at the start, etc.)
git ls-files '*Kconfig*' | \
xargs sed -i -E '1 s/#\s*Kconfig[\w.-]*\s*-\s*/# /'
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Fix GCC "warning: 'ipv4' defined but not used [-Wunused-variable]" and
"warning: 'ipv6' defined but not used [-Wunused-variable]" when either
IPv4 or IPv6 support is not enabled.
Signed-off-by: Markus Fuchs <markus.fuchs@de.sauter-bc.com>
create_ipv6_answer() function is behind #define's but get used behind
IS_ENABLED(CONFIG_NET_IPV6), which is not allowed.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
If we are returned IPv4 address but the hints says IPv6, then
return error as currently we do not support AI_V4MAPPED addresses.
Same check for IPv6 if we want only IPv4 address.
Fixes#18870
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The mDNS packet receive had issues:
* The DNS id needs to be 0 for both sending and receiving, we did
not accepted 0 incoming id.
* The mDNS response does not have any questions in it so we just
need to skip the question count checks in response.
* Skip the Cache-Flush bit in Class field so that we can properly
parse CLASS_IN value.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
In DNS server init, print information whether the DNS server
is mDNS or LLMNR one. This way we do not need to remember what
IP addresses are used either of them.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The source UDP port in all Multicast DNS responses MUST be 5353
as described in RFC 6762 chapter 6.
Fixes#18732
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Simplify algorithm to skip (aka calculate length) of encoded domain
name in a DNS answer. Now it's fully compliant to RFC 1035 regarding
handling of compressed FQDNs. Additionally, bounds checking is now
performed by the parsing code.
Fixes: #18334
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
If DNS server(s) are added or removed e.g., as part of DHCP
processing, send newly defined net-mgmt events so that
a user application may get this information.
Fixes#16924
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The hostname needs to have log_strdup() when printing it.
Also it is useful to print information if the sending fails.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
- answer offset was 1 byte off.
- request offset, when copied into the answer, was off as well.
Fixes#16142
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Modify dns_unpack_answer() function to check if the answer is
compressed or not, and return correct values regardless.
Fixes#16594
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The query->len does not take 'Terminator' into account, shift over
one byte to prevent overwriting it with next field (Type).
This fixes mdns_resolver sample.
Fixes: 87eb552dd2 (net/dns: Switch mdns responder to new net_pkt API)
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
It is possible that UDP header cannot be accessed so we need
to check that we do not do null pointer dereference.
Coverity-CID: 198866
Fixes#16581
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Update the files which contain no license information with the
'Apache-2.0' SPDX license identifier. Many source files in the tree are
missing licensing information, which makes it harder for compliance
tools to determine the correct license.
By default all files without license information are under the default
license of Zephyr, which is Apache version 2.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
And also to the relevant callbacks.
That parameter is not used anywhere so it is useless.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Now that legacy functions are removew, let's rename the new functions by
removing the _new suffix.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Unfortunately, most of the dns pack/unpack code is not factorized, and
mdns responder rewrites its own functions to write dns hdr, query,
answer.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Unfortunately, most of the dns pack/unpack code is not factorized, and
llmnr responder rewrites its own functions to write dns hdr, query,
answer.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
So instead of building the net_pkt by itself, dns will pass its message
buffer to net_context_sendto_new(), which in turn will build the net_pkt
relevantly.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
dns_write was in the middle of this, let's just move it to a more
relevant place so we logically have macros, then local variables then
functions.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Some of dns_pack.c macros are also used in resolve.c, so let's just put
the macros in dns_pack.h
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
There are issues using lowercase min and max macros when compiling a C++
application with a third-party toolchain such as GNU ARM Embedded when
using some STL headers i.e. <chrono>.
This is because there are actual C++ functions called min and max
defined in some of the STL headers and these macros interfere with them.
By changing the macros to UPPERCASE, which is consistent with almost all
other pre-processor macros this naming conflict is avoided.
All files that use these macros have been updated.
Signed-off-by: Carlos Stuart <carlosstuart1970@gmail.com>
If status is 0, both ip_hdr and proto_hdr will own a pointer to the
relevant IP and Protocol headers. In order to know which of ipv4/ipv6
and udp/tcp one will need to use respectively net_pkt_family(pkt) and
net_context_get_ip_proto(context).
Having access to those headers directly, many callbacks will not need
to parse the packet again no get the src/dst addresses or the src/dst
ports. This will be change after this commit.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Remove network specific default and max log level setting
and start to use the zephyr logging values for those.
Remove LOG_MODULE_REGISTER() from net_core.h and place the
calls into .c files. This is done in order to avoid weird
compiler errors in some cases and to make the code look similar
as other subsystems.
Fixes#11343Fixes#11659
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
net_udp_get_hdr() function returns NULL on failure. Therefore
handle its return value to avoid potential NULL dereference.
Fixes#11485
Coverity-CID: 189738
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Unify the function naming for various network checking functions.
For example:
net_is_ipv6_addr_loopback() -> net_ipv6_is_addr_loopback()
net_is_my_ipv6_maddr() -> net_ipv6_is_my_maddr()
etc.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Fixes following warning:
...
subsys/net/lib/dns/llmnr_responder.c:24:0:
subsys/net/lib/dns/llmnr_responder.c: In function ‘recv_cb’:
include/net/net_pkt.h:1203:9: warning: ‘addr’ may be used uninitialized
in this function [-Wmaybe-uninitialized]
return net_pkt_append(pkt, len, data, timeout) == len;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
subsys/net/lib/dns/llmnr_responder.c:306:14: note: ‘addr’ was declared
here
const u8_t *addr;
^~~~
...
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Fixes warning:
warning: ‘ipv6’ defined but not used [-Wunused-variable]
static struct net_context *ipv6;
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Adding spaces around "=" when definining Kconfig template so
that is more consistent with overall style of these template
variables.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
As the debugging print calls are async, all the strings that might
be overwritten must use log_strdup() which will create a copy
of the printable string.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
There is now a proper function to select the right source IPv4
address when sending a mDNS packet so use it instead of selecting
the address directly from network interface.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The return of memset is never checked. This patch explicitly ignore
the return to avoid MISRA-C violations.
The only directory excluded directory was ext/* since it contains
only imported code.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
Consistently use
config FOO
bool/int/hex/string "Prompt text"
instead of
config FOO
bool/int/hex/string
prompt "Prompt text"
(...and a bunch of other variations that e.g. swapped the order of the
type and the 'prompt', or put other properties between them).
The shorthand is fully equivalent to using 'prompt'. It saves lines and
avoids tricking people into thinking there is some semantic difference.
Most of the grunt work was done by a modified version of
https://unix.stackexchange.com/questions/26284/how-can-i-use-sed-to-replace-a-multi-line-string/26290#26290, but some
of the rarer variations had to be converted manually.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Instead of waiting forever for a network buffer, have a timeout
when allocating net_buf. This way we cannot left hanging for a
long time waiting for a buffer and possibly deadlock the system.
This commit adds checks to L2 and network support libraries.
Fixes#7571
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This finishes refactor of splitting off net_config library name from
net_app library, started in c60df1311, c89a06dbc. This commit makes
sure that Kconfig options are prefixed with CONFIG_NET_CONFIG_
instead of CONFIG_NET_APP_, and propagates these changes thru the
app configs in the tree.
Also, minor dependency, etc. tweaks are made.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Move struct members around in networking code so that we avoid
unnecessary holes inside structs. No functionality changes by
this commit.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Bool symbols implicitly default to 'n'.
A 'default n' can make sense e.g. in a Kconfig.defconfig file, if you
want to override a 'default y' on the base definition of the symbol. It
isn't used like that on any of these symbols though.
Remove some 'default ""' properties on string symbols too.
Also make definitions more consistent by converting some
config FOO
<type>
prompt "foo"
definitions to a shorter form:
config FOO
<type> "foo"
This shorthand works for int/hex/string symbols too, not just for bool
symbols.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
This allows zephyr to listen LLMNR DNS queries sent by Windows
and respond to them. See RFC 4795 for details.
The feature requires that hostname is set properly to the
zephyr device and LLMNR is configured properly.
Typically following config options are enough for this support:
CONFIG_NET_HOSTNAME_ENABLE=y
CONFIG_NET_HOSTNAME="zephyr-device"
CONFIG_DNS_RESOLVER=y
CONFIG_LLMNR_RESPONDER=y
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This implements LLMNR client from RFC 4795. This means that caller
is able to resolve DNS resource records using multicast DNS.
The LLMNR is used in Windows networks.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Convert couple of MSEC() calls to K_MSEC() as the timeouts
when using MSEC() are just too long.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Callers of dns_get_addr_info() depends on receiving an end-of-results
callback (where 'info' is NULL) when finished. Do this on failure in
cb_recv() instead of pointing to an empty object.
This fix will avoid a deadlock situation in getaddrinfo().
A reply code other than "no error" in the DNS response is a typical
case when the lookup failed and this occurs.
Moved "struct dns_addrinfo info" variable from cb_recv() to dns_read()
because it was now unused in cb_recv().
Adding tests for this requires network access and a DNS server,
or a mechanism for generating a DNS response with a reply code.
Signed-off-by: Stig Bjørlykke <stig.bjorlykke@nordicsemi.no>
In some cases, we need to initialize DNS servers from a binary
addresses, e.g. in case of DHCP processing. With existing API,
such addresses would need to be converted to strings, just to
be converted back to struct sockaddr in dns_resolve_init().
This is not efficient, and with a number of addresses quite
cumbersome. So instead, allow to pass DNS server either as
strings, or as struct sockaddr's (or both).
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Instead of accessing the environment variable ZEPHYR_BASE every time we
require accessing the source code root, use an intermediate variable
that has OS path separators correctly set to '/' to avoid issues on
Windows.
Note: This removes the ZEPHYR_SOURCE_DIR CMake variable. External
applications using that will need to change to use the new ZEPHYR_BASE
variable.
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
Introducing CMake is an important step in a larger effort to make
Zephyr easy to use for application developers working on different
platforms with different development environment needs.
Simplified, this change retains Kconfig as-is, and replaces all
Makefiles with CMakeLists.txt. The DSL-like Make language that KBuild
offers is replaced by a set of CMake extentions. These extentions have
either provided simple one-to-one translations of KBuild features or
introduced new concepts that replace KBuild concepts.
This is a breaking change for existing test infrastructure and build
scripts that are maintained out-of-tree. But for FW itself, no porting
should be necessary.
For users that just want to continue their work with minimal
disruption the following should suffice:
Install CMake 3.8.2+
Port any out-of-tree Makefiles to CMake.
Learn the absolute minimum about the new command line interface:
$ cd samples/hello_world
$ mkdir build && cd build
$ cmake -DBOARD=nrf52_pca10040 ..
$ cd build
$ make
PR: zephyrproject-rtos#4692
docs: http://docs.zephyrproject.org/getting_started/getting_started.html
Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no>
If we run out of memory, then net_pkt might be null and we must
not access it.
Coverity-CID: 178235
Fixes#4593
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Some doxygen directives were missing from dns_pack.h file.
Also make function header documentation look better.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This creates mDNS responder and serves configured IP addresses
to the callers which want to resolve .local addresses.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
