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server: workaround evil clients

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If the clients attempt to send more data after we've instantiated the
terminal, just consume the data but ignore it.
This commit is contained in:
Daniel Eklöf 2019-11-05 09:31:47 +01:00
parent 5f77f0e999
commit 5b3fe4492c
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1 changed files with 6 additions and 0 deletions
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server.c
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@ -102,6 +102,12 @@ fdm_client(struct fdm *fdm, int fd, int events, void *data)
assert(events & EPOLLIN); assert(events & EPOLLIN);
if (client->term != NULL) {
uint8_t dummy[128];
read(fd, dummy, sizeof(dummy));
return true;
}
uint16_t term_env_len; uint16_t term_env_len;
if (recv(fd, &term_env_len, sizeof(term_env_len), 0) != sizeof(term_env_len)) if (recv(fd, &term_env_len, sizeof(term_env_len), 0) != sizeof(term_env_len))
goto shutdown; goto shutdown;