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/*
Copyright (C) 2009-2015 Red Hat, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <glib.h>
#include <spice/enums.h>
#include <openssl/err.h>
#include <common/macros.h>
#include "utils.h"
int rgb32_data_has_alpha(int width, int height, size_t stride,
const uint8_t *data, int *all_set_out)
{
const uint8_t *line, *end;
uint8_t alpha;
int has_alpha;
has_alpha = FALSE;
while (height-- > 0) {
line = data;
end = line + sizeof(uint32_t) * width;
data += stride;
while (line != end) {
alpha = line[3];
if (alpha != 0) {
has_alpha = TRUE;
if (alpha != 0xffU) {
*all_set_out = FALSE;
return TRUE;
}
}
line += sizeof(uint32_t);
}
}
*all_set_out = has_alpha;
return has_alpha;
}
/* These names are used to parse command line options, don't change them */
static const char *const channel_names[] = {
[ SPICE_CHANNEL_MAIN ] = "main",
[ SPICE_CHANNEL_DISPLAY ] = "display",
[ SPICE_CHANNEL_INPUTS ] = "inputs",
[ SPICE_CHANNEL_CURSOR ] = "cursor",
[ SPICE_CHANNEL_PLAYBACK ] = "playback",
[ SPICE_CHANNEL_RECORD ] = "record",
[ SPICE_CHANNEL_TUNNEL ] = "tunnel",
[ SPICE_CHANNEL_SMARTCARD] = "smartcard",
[ SPICE_CHANNEL_USBREDIR ] = "usbredir",
[ SPICE_CHANNEL_PORT ] = "port",
[ SPICE_CHANNEL_WEBDAV ] = "webdav",
};
/* Make sure the last channel in the protocol has a name.
* We don't want to do this check in all cases as this would make code
* fail to compile if there are additional channels in the protocol so
* do this check only if ENABLE_EXTRA_CHECKS is enabled */
#if ENABLE_EXTRA_CHECKS
verify(G_N_ELEMENTS(channel_names) == SPICE_END_CHANNEL);
#endif
/**
* red_channel_type_to_str:
*
* This function returns a human-readable name from a SPICE_CHANNEL_* type.
* It must be called with a valid channel type.
*
* Returns: NULL if the channel type is invalid, the channel name otherwise.
*/
const char *red_channel_type_to_str(int type)
{
g_return_val_if_fail(type >= 0, NULL);
g_return_val_if_fail(type < G_N_ELEMENTS(channel_names), NULL);
g_return_val_if_fail(channel_names[type] != NULL, NULL);
return channel_names[type];
}
/**
* red_channel_name_to_type:
*
* Converts a channel name to a SPICE_CHANNEL_* type. These names are currently
* used in our public API (see spice_server_set_channel_security()).
*
* Returns: -1 if @name was not a known channel name, the channel
* type otherwise.
*
*/
int red_channel_name_to_type(const char *name)
{
int i;
for (i = 0; i < G_N_ELEMENTS(channel_names); i++) {
if (g_strcmp0(channel_names[i], name) == 0) {
return i;
}
}
return -1;
}
void red_dump_openssl_errors(void)
{
int ssl_error;
ssl_error = ERR_get_error();
while (ssl_error != 0) {
char error_str[256];
ERR_error_string_n(ssl_error, error_str, sizeof(error_str));
g_warning("%s", error_str);
ssl_error = ERR_get_error();
}
}
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