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42 lines
2 KiB
C
42 lines
2 KiB
C
#ifndef CLIENT_H
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#define CLIENT_H
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#include "ssh_server.h" /* for client_t */
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/* Send `len` bytes to the client over its SSH channel. Serialised on
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* client->io_lock so concurrent senders don't interleave. Returns 0 on
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* success, -1 if the channel is gone or a partial write fails. */
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int client_send(client_t *client, const char *data, size_t len);
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/* Queue an audible bell for the client's own session loop to send. This
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* avoids writing to another client's SSH channel from the sender's thread. */
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void client_queue_bell(client_t *client);
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/* Send one queued bell, if present, from the client's own session loop.
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* Returns 0 when no bell was pending or it was written successfully. */
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int client_flush_pending_bells(client_t *client);
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/* printf-style wrapper around client_send(). The formatted string must
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* fit in 2048 bytes; truncation or encoding errors return -1. */
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int client_printf(client_t *client, const char *fmt, ...);
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/* Reference counting for safe cross-thread cleanup.
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*
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* Lifecycle: bootstrap_run() creates the client_t with ref_count = 1
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* (the "main" ref), then adds a second ref before installing the channel
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* callbacks (the "callback" ref) so the client outlives any in-flight
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* eof / close / window-change callback invocation. The interactive
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* session releases both refs in its cleanup path; the final release
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* frees the SSH session, channel, callback struct, and the client_t. */
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void client_addref(client_t *client);
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void client_release(client_t *client);
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/* Install the post-bootstrap channel callbacks (window-change, eof, close)
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* that target this client_t. Caller MUST have already added one
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* client_addref() to keep the client alive across in-flight callback
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* invocations; the matching client_release() happens during cleanup in
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* input_run_session(). Returns 0 on success, -1 on failure (in which
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* case the caller still owns both refs and must release them). */
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int client_install_channel_callbacks(client_t *client);
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#endif /* CLIENT_H */
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