49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
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#include "device_event.h"
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#include <string.h>
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#include <SDL2/SDL_assert.h>
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#include "buffer_util.h"
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#include "log.h"
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ssize_t
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device_event_deserialize(const unsigned char *buf, size_t len,
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struct device_event *event) {
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if (len < 3) {
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// at least type + empty string length
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return 0; // not available
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}
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event->type = buf[0];
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switch (event->type) {
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case DEVICE_EVENT_TYPE_GET_CLIPBOARD: {
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uint16_t clipboard_len = buffer_read16be(&buf[1]);
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if (clipboard_len > len - 3) {
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return 0; // not available
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}
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char *text = SDL_malloc(clipboard_len + 1);
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if (!text) {
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LOGW("Could not allocate text for clipboard");
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return -1;
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}
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if (clipboard_len) {
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memcpy(text, &buf[3], clipboard_len);
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}
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text[clipboard_len] = '\0';
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event->clipboard_event.text = text;
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return 3 + clipboard_len;
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}
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default:
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LOGW("Unsupported device event type: %d", (int) event->type);
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return -1; // error, we cannot recover
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}
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}
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void
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device_event_destroy(struct device_event *event) {
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if (event->type == DEVICE_EVENT_TYPE_GET_CLIPBOARD) {
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SDL_free(event->clipboard_event.text);
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}
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}
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