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#include "device_msg.h"
#include <string.h>
#include "config.h"
#include "util/buffer_util.h"
#include "util/log.h"
ssize_t
device_msg_deserialize(const unsigned char *buf, size_t len,
struct device_msg *msg) {
if (len < 5) {
// at least type + empty string length
return 0; // not available
}
msg->type = buf[0];
switch (msg->type) {
case DEVICE_MSG_TYPE_CLIPBOARD: {
size_t clipboard_len = buffer_read32be(&buf[1]);
if (clipboard_len > len - 5) {
return 0; // not available
}
char *text = SDL_malloc(clipboard_len + 1);
if (!text) {
LOGW("Could not allocate text for clipboard");
return -1;
}
if (clipboard_len) {
memcpy(text, &buf[5], clipboard_len);
}
text[clipboard_len] = '\0';
msg->clipboard.text = text;
return 5 + clipboard_len;
}
default:
LOGW("Unknown device message type: %d", (int) msg->type);
return -1; // error, we cannot recover
}
}
void
device_msg_destroy(struct device_msg *msg) {
if (msg->type == DEVICE_MSG_TYPE_CLIPBOARD) {
SDL_free(msg->clipboard.text);
}
}
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