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GNUTLS: Add dedicated socket send/recv functions

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This avoids a compiler warning regarding casting a file descriptor to a
pointer (as input to gnutls_transport_set_ptr()), and also ensures that
the pointer is valid for the lifetime of the session.
This commit is contained in:
Aaron Jones 2016-09-16 13:32:30 +00:00
parent 3f32d48dab
commit 5797027e9f
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GPG key ID: EC6F86EE9CD840B5
1 changed files with 23 additions and 0 deletions
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23
libratbox/src/gnutls.c
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@ -73,6 +73,9 @@ struct ssl_connect
static void rb_ssl_connect_realcb(rb_fde_t *, int, struct ssl_connect *);
static ssize_t rb_sock_net_recv(gnutls_transport_ptr_t, void *, size_t);
static ssize_t rb_sock_net_xmit(gnutls_transport_ptr_t, const void *, size_t);
/*
@ -111,6 +114,22 @@ rb_ssl_cert_auth_cb(gnutls_session_t session,
return 0;
}
static ssize_t
rb_sock_net_recv(gnutls_transport_ptr_t context_ptr, void *const buf, const size_t count)
{
const int fd = rb_get_fd((rb_fde_t *)context_ptr);
return recv(fd, buf, count, 0);
}
static ssize_t
rb_sock_net_xmit(gnutls_transport_ptr_t context_ptr, const void *const buf, const size_t count)
{
const int fd = rb_get_fd((rb_fde_t *)context_ptr);
return send(fd, buf, count, 0);
}
static void
rb_ssl_init_fd(rb_fde_t *const F, const rb_fd_tls_direction dir)
{
@ -141,6 +160,10 @@ rb_ssl_init_fd(rb_fde_t *const F, const rb_fd_tls_direction dir)
gnutls_dh_set_prime_bits(SSL_P(F), 1024);
gnutls_priority_set(SSL_P(F), default_priority);
gnutls_transport_set_ptr(SSL_P(F), (gnutls_transport_ptr_t) F);
gnutls_transport_set_pull_function(SSL_P(F), rb_sock_net_recv);
gnutls_transport_set_push_function(SSL_P(F), rb_sock_net_xmit);
if(dir == RB_FD_TLS_DIRECTION_IN)
gnutls_certificate_server_set_request(SSL_P(F), GNUTLS_CERT_REQUEST);
}