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Enhance documentation of ssl_set_hostname

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(1) Add missing error condition
(2) Specify allowance and effect of of NULL hostname parameter
(3) Describe effect of function on failure

Also, adapt ChangeLog.
This commit is contained in:
Hanno Becker 2017-05-05 13:10:08 +01:00 committed by Simon Butcher
parent b9ac47c371
commit ce2c02cca2
2 changed files with 20 additions and 6 deletions
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6
ChangeLog
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@ -1,5 +1,11 @@
mbed TLS ChangeLog (Sorted per branch, date)
= mbed TLS 1.3.22 branch released 2017-xx-xx
Bugfix
* Fix memory leak in ssl_set_hostname() when called multiple times.
Found by projectgus and jethrogb, #836.
= mbed TLS 1.3.21 branch released 2017-08-10
Security

20
include/polarssl/ssl.h
View file

@ -1398,15 +1398,23 @@ void ssl_set_curves( ssl_context *ssl, const ecp_group_id *curves );
#if defined(POLARSSL_SSL_SERVER_NAME_INDICATION)
/**
* \brief Set hostname for ServerName TLS extension
* (client-side only)
*
* \brief Set or reset the hostname to check against the received
* server certificate. It sets the ServerName TLS extension,
* too, if that extension is enabled. (client-side only)
*
* \param ssl SSL context
* \param hostname the server hostname
* \param hostname the server hostname, may be NULL to clear hostname
*
* \return 0 if successful or POLARSSL_ERR_SSL_MALLOC_FAILED
*/
* \note Maximum hostname length SSL_MAX_HOST_NAME_LEN.
*
* \return 0 if successful, POLARSSL_ERR_SSL_MALLOC_FAILED on
* allocation failure, POLARSSL_ERR_BAD_INPUT_DATA on
* too long input hostname.
*
* \note Hostname set to the one provided on success (cleared
* when NULL). On allocation failure hostname is cleared.
* On too long input failure, old hostname is unchanged.
*/
int ssl_set_hostname( ssl_context *ssl, const char *hostname );
/**