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Fixed partial send data offset and memory leak

This commit is contained in:
M66B 2019-05-05 08:20:22 +02:00
parent 7ee1defee3
commit f34eabd55a
1 changed files with 16 additions and 10 deletions
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26
app/src/main/jni/netguard/tcp.c
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@ -485,20 +485,26 @@ void check_tcp_socket(const struct arguments *args,
fwd = 1;
buffer_size -= sent;
s->tcp.sent += sent;
s->tcp.forward->seq += sent;
s->tcp.forward->len -= sent;
s->tcp.remote_seq = s->tcp.forward->seq;
s->tcp.remote_seq = s->tcp.forward->seq + sent;
if (s->tcp.forward->len == 0) {
struct segment *p = s->tcp.forward;
s->tcp.forward = s->tcp.forward->next;
free(p->data);
free(p);
} else {
if (sent != s->tcp.forward->len) {
log_android(ANDROID_LOG_WARN, "%s partial send %u/%u",
session, sent, s->tcp.forward->len);
break;
struct segment *n = malloc(sizeof(struct segment));
n->seq = s->tcp.forward->seq + sent;
n->len = s->tcp.forward->len - (uint16_t) sent;
n->data = malloc(n->len);
memcpy(n->data, s->tcp.forward->data + sent, n->len);
n->psh = s->tcp.forward->psh;
n->next = s->tcp.forward->next;
s->tcp.forward->next = n;
}
struct segment *p = s->tcp.forward;
s->tcp.forward = s->tcp.forward->next;
free(p->data);
free(p);
}
}