Commit graph

531 commits

Author SHA1 Message Date
Hanno Becker 095d9cf58e Fix ordering of free()ing of internal structures in ssl_server2
If `MBEDTLS_MEMORY_BUFFER_ALLOC_C` is configured and Mbed TLS'
custom buffer allocator is used for calloc() and free(), the
read buffer used by the server example application is allocated
from the buffer allocator, but freed after the buffer allocator
has been destroyed. If memory backtracing is enabled, this leaves
a memory leak in the backtracing structure allocated for the buffer,
as found by valgrind.

Fixes #2069.
2018-10-09 12:44:42 +01:00
Simon Butcher 0592ea772a Merge remote-tracking branch 'public/pr/1140' into development 2018-09-27 11:37:42 +01:00
Simon Butcher 14dac0953e Merge remote-tracking branch 'public/pr/1918' into development 2018-08-28 12:21:41 +01:00
Simon Butcher 1846e406c8 Merge remote-tracking branch 'public/pr/1939' into development 2018-08-28 12:19:56 +01:00
Hanno Becker 1841b0a11c Rename ssl_conf_datagram_packing() to ssl_set_datagram_packing()
The naming convention is that functions of the form mbedtls_ssl_conf_xxx()
apply to the SSL configuration.
2018-08-24 11:13:57 +01:00
Hanno Becker f61ff4e1d6 ssl_server2: Remove redundant new line 2018-08-21 13:17:47 +01:00
Hanno Becker 6aeaa05a95 Merge branch 'iotssl-165-dtls-hs-fragmentation-new' into datagram_packing 2018-08-20 12:53:37 +01:00
Manuel Pégourié-Gonnard 6e7aaca146 Move MTU setting to SSL context, not config
This setting belongs to the individual connection, not to a configuration
shared by many connections. (If a default value is desired, that can be handled
by the application code that calls mbedtls_ssl_set_mtu().)

There are at least two ways in which this matters:
- per-connection settings can be adjusted if MTU estimates become available
  during the lifetime of the connection
- it is at least conceivable that a server might recognize restricted clients
  based on range of IPs and immediately set a lower MTU for them. This is much
easier to do with a per-connection setting than by maintaining multiple
near-duplicated ssl_config objects that differ only by the MTU setting.
2018-08-20 10:37:23 +02:00
Hanno Becker 4d61591c0c Add cmd line option to ssl_client2 for datagram packing
This commit adds a new command line option `dgram_packing`
to the example server application programs/ssl/ssl_client2
allowing to allow/forbid the use of datagram packing.
2018-08-17 15:45:40 +01:00
Hanno Becker e7675d0d3d Add cmd line option to ssl_server2 for datagram packing
This commit adds a new command line option `dgram_packing`
to the example server application programs/ssl/ssl_server2
allowing to allow/forbid the use of datagram packing.
2018-08-17 15:45:33 +01:00
Manuel Pégourié-Gonnard b747c6cf9b Add basic first tests for MTU setting
For now, just check that it causes us to fragment. More tests are coming in
follow-up commits to ensure we respect the exact value set, including when
renegotiating.
2018-08-16 10:01:47 +02:00
Mohammad Azim Khan 9ebdcffef4 Fix Wformat-overflow warning in ssl_mail_client.c
sprintf( (char *) buf, "%s\r\n", base );
 Above code generates Wformat-overflow warning since both buf and base
are of same size. buf should be sizeof( base ) + characters added in
the format. In this case format 2 bytes for "\r\n".
2018-08-14 11:02:23 +01:00
Simon Butcher 2c92949e0a Merge remote-tracking branch 'public/pr/1198' into development 2018-07-24 17:20:17 +01:00
Simon Butcher 116ac43d00 Merge remote-tracking branch 'public/pr/1852' into development 2018-07-24 12:18:59 +01:00
Simon Butcher cce68bec1d Add a macro to define the memory size in ssl_server2.c
When MBEDTLS_MEMORY_BUFFER_ALLOC_C was defined, the sample ssl_server2.c was
using its own memory buffer for memory allocated by the library. The memory
used wasn't obvious, so this adds a macro for the memory buffer allocated to
make the allocated memory size more obvious and hence easier to configure.
2018-07-23 14:26:09 +01:00
Simon Butcher ccbd46435f Increase the memory buffer size for ssl_server2.c
Newer features in the library have increased the overall RAM usage of the
library, when all features are enabled. ssl_server2.c, with all features enabled
was running out of memory for the ssl-opt.sh test 'Authentication: client
max_int chain, server required'.

This commit increases the memory buffer allocation for ssl_server2.c to allow
the test to work with all features enabled.
2018-07-22 14:43:39 +01:00
Andres Amaya Garcia ce6fbac247 Fix ssl_client2 to send 0-length app data 2018-07-20 23:09:29 +01:00
Simon Butcher fad547072a Merge remote-tracking branch 'public/pr/532' into development 2018-07-19 16:15:51 +01:00
Nicholas Wilson 61fa436ad3 Address review comments - tidy usage of macros to use minimal values 2018-06-28 17:09:21 +01:00
Andrzej Kurek 755890f529 Remove trailing whitespace 2018-06-27 03:57:15 -04:00
Nicholas Wilson 2682edf205 Fix build using -std=c99
In each place where POSIX/GNU functions are used, the file must declare
that it wants POSIX functionality before including any system headers.
2018-06-25 12:00:26 +01:00
Andrzej Kurek da4029d665 ssl_server2: add buffer overhead for a termination character
Switch to mbedtls style of memory allocation
2018-06-20 07:07:55 -04:00
Andrzej Kurek 30e731decd Added buffer_size and response_size options for ssl-server2.
Added appropriate tests.
2018-06-20 04:22:06 -04:00
Simon Butcher 688a456f58 Merge remote-tracking branch 'public/pr/1734' into development 2018-06-17 17:35:34 +01:00
Simon Butcher 5f57f1e3cc Merge remote-tracking branch 'public/pr/1270' into development 2018-06-15 14:17:31 +01:00
Gilles Peskine d5d983e168 ssl_server2: handle mbedtls_x509_dn_gets failure
If mbedtls_x509_dn_gets fails, the server could end up calling printf
on an uninitialized buffer. Check if the function succeeds. Found by
Coverity.
2018-06-15 14:05:10 +02:00
Andres Amaya Garcia 7d42965ea8 Fix typo in platform macro defines for examples 2018-06-14 23:01:55 +01:00
Andres Amaya Garcia 67a42acfb8 Fix ret code in ssl_mail_client.c 2018-06-14 23:01:55 +01:00
Andres Amaya Garcia 4be53b5519 Fix ret code in ssl_fork_server.c 2018-06-14 23:01:10 +01:00
Andres Amaya Garcia 5517202541 Fix ret code in ssl_client1.c 2018-06-14 23:01:10 +01:00
Gilles Peskine 4481744538 Fix memory leak in ssl_server2 with SNI + async callback
In ssl_server2, the private key objects are normally local variables
of the main function. However this does not hold for private keys in
the SNI configuration. When async callbacks are used, the test code
transfers the ownership of the private keys to the async callbacks.
Therefore the test code must free the SNI private keys through the
async callbacks (but it must not free the straight private keys this
way since they are not even heap-allocated).
2018-06-14 13:26:52 +02:00
Gilles Peskine e247989061 SNI + SSL async callback: make all keys async
When testing async callbacks with SNI, make all the keys async, not
just the first one. Otherwise the test is fragile with respect to
whether a key is used directly or through the async callbacks.
2018-06-14 13:26:52 +02:00
Gilles Peskine 2636fade52 ssl_async_resume: free the operation context on error 2018-06-14 13:26:52 +02:00
Gilles Peskine f5a9996088 ssl_server2: get op_name from context in ssl_async_resume as well 2018-06-14 13:26:52 +02:00
Gilles Peskine 3dae1cfa3a Async callback: use mbedtls_pk_check_pair to compare keys
In the current test code, the object that is used as a public key in
the certificate also contains a private key. However this is because
of the way the stest code is built and does not demonstrate the API in
a useful way. Use mbedtls_pk_check_pair, which is not what real-world
code would do (since the private key would typically be in an external
cryptoprocessor) but is a more representative placeholder.
2018-06-14 13:26:51 +02:00
Gilles Peskine a668c60186 Rename mbedtls_ssl_async_{get,set}_data for clarity
Rename to mbedtls_ssl_get_async_operation_data and
mbedtls_ssl_set_async_operation_data so that they're about
"async operation data" and not about some not-obvious "data".
2018-06-14 13:26:51 +02:00
Gilles Peskine 166ce748cf SSL async callback: cert is not always from mbedtls_ssl_conf_own_cert
The certificate passed to async callbacks may not be the one set by
mbedtls_ssl_conf_own_cert. For example, when using an SNI callback,
it's whatever the callback is using. Document this, and add a test
case (and code sample) with SNI.
2018-06-14 13:26:51 +02:00
Gilles Peskine d6fbfde994 ssl_async_set_key: detect if ctx->slots overflows 2018-06-14 13:26:51 +02:00
Gilles Peskine 4d9ec4dcf7 Fix uninitialized variable in ssl_server2 2018-06-14 13:26:51 +02:00
Gilles Peskine 6331d78675 Don't use the printf format %zd
We target C89 libc, so don't use %zd or %zu. Just use %u, and make
slot numbers `unsigned` for simplicity.
2018-06-14 13:26:51 +02:00
Gilles Peskine 3f3ada8839 Fix memory leak in ssl_server2 with SNI + async callback
In ssl_server2, the private key objects are normally local variables
of the main function. However this does not hold for private keys in
the SNI configuration. When async callbacks are used, the test code
transfers the ownership of the private keys to the async callbacks.
Therefore the test code must free the SNI private keys through the
async callbacks (but it must not free the straight private keys this
way since they are not even heap-allocated).
2018-06-13 18:09:28 +02:00
Gilles Peskine 157f6d8f74 SNI + SSL async callback: make all keys async
When testing async callbacks with SNI, make all the keys async, not
just the first one. Otherwise the test is fragile with respect to
whether a key is used directly or through the async callbacks.
2018-06-13 18:06:51 +02:00
Gilles Peskine 3cde2fca53 ssl_async_resume: free the operation context on error 2018-06-12 14:17:39 +02:00
Darryl Green 11999bb72e Fix minor code style issues 2018-05-15 09:21:57 +01:00
Gilles Peskine 276b9a650c ssl_server2: get op_name from context in ssl_async_resume as well 2018-04-30 16:39:35 +02:00
Gilles Peskine 26d01bcb5c Async callback: use mbedtls_pk_check_pair to compare keys
In the current test code, the object that is used as a public key in
the certificate also contains a private key. However this is because
of the way the stest code is built and does not demonstrate the API in
a useful way. Use mbedtls_pk_check_pair, which is not what real-world
code would do (since the private key would typically be in an external
cryptoprocessor) but is a more representative placeholder.
2018-04-30 12:07:56 +02:00
Gilles Peskine 1febfef561 Rename mbedtls_ssl_async_{get,set}_data for clarity
Rename to mbedtls_ssl_get_async_operation_data and
mbedtls_ssl_set_async_operation_data so that they're about
"async operation data" and not about some not-obvious "data".
2018-04-30 11:54:39 +02:00
Gilles Peskine 807d74a062 SSL async callback: cert is not always from mbedtls_ssl_conf_own_cert
The certificate passed to async callbacks may not be the one set by
mbedtls_ssl_conf_own_cert. For example, when using an SNI callback,
it's whatever the callback is using. Document this, and add a test
case (and code sample) with SNI.
2018-04-30 10:30:49 +02:00
Gilles Peskine 0b53e24c6b ssl_async_set_key: detect if ctx->slots overflows 2018-04-30 10:23:56 +02:00
Gilles Peskine 9de55fab56 Fix uninitialized variable in ssl_server2 2018-04-26 14:33:43 +02:00