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Add function to free compression methods.

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Although the memory allocated by compression methods is fixed and
cannot grow over time it can cause warnings in some leak checking
tools. The function SSL_COMP_free_compression_methods() will free
and zero the list of supported compression methods. This should
*only* be called in a single threaded context when an application
is shutting down to avoid interfering with existing contexts
attempting to look up compression methods.
(cherry picked from commit 976c58302b)
This commit is contained in:
Dr. Stephen Henson
2014-02-28 18:37:08 +00:00
parent 65370f9bbc
commit db7b5e0d76
2 changed files with 13 additions and 0 deletions
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12
ssl/ssl_ciph.c
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@@ -1899,6 +1899,18 @@ STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP) *meths)
return old_meths;
}
static void cmeth_free(SSL_COMP *cm)
{
OPENSSL_free(cm);
}
void SSL_COMP_free_compression_methods(void)
{
STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods;
ssl_comp_methods = NULL;
sk_SSL_COMP_pop_free(old_meths, cmeth_free);
}
int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
{
SSL_COMP *comp;