3653fb6b15
Add a special LOG_OOM() function to log all OutOfMemory errors (i.e. allocations returning NULL).
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
#include "device_msg.h"
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "util/buffer_util.h"
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#include "util/log.h"
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ssize_t
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device_msg_deserialize(const unsigned char *buf, size_t len,
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struct device_msg *msg) {
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if (len < 5) {
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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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msg->type = buf[0];
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switch (msg->type) {
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case DEVICE_MSG_TYPE_CLIPBOARD: {
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size_t clipboard_len = buffer_read32be(&buf[1]);
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if (clipboard_len > len - 5) {
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return 0; // not available
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}
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char *text = malloc(clipboard_len + 1);
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if (!text) {
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LOG_OOM();
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return -1;
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}
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if (clipboard_len) {
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memcpy(text, &buf[5], clipboard_len);
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}
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text[clipboard_len] = '\0';
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msg->clipboard.text = text;
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return 5 + clipboard_len;
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}
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case DEVICE_MSG_TYPE_ACK_CLIPBOARD: {
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uint64_t sequence = buffer_read64be(&buf[1]);
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msg->ack_clipboard.sequence = sequence;
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return 9;
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}
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default:
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LOGW("Unknown device message type: %d", (int) msg->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_msg_destroy(struct device_msg *msg) {
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if (msg->type == DEVICE_MSG_TYPE_CLIPBOARD) {
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free(msg->clipboard.text);
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}
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}
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