Kim Woelders
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/*
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* Copyright (c) 2018 Lars Thrane A/S
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* SPDX-License-Identifier: GPL-2.0
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*
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* Telnet interface - server
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*/
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#ifndef TELNET_SERVER_H
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#define TELNET_SERVER_H
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typedef void (cli_tx_f) (void *cctx, const void *buf, int len);
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typedef void (cli_ss_f) (void *cctx, int signal, int value);
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/* Telnet context */
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typedef struct {
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void *cctx; /* Client context */
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cli_tx_f *cli_tx; /* Write to client */
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cli_ss_f *cli_ss; /* Signal from client */
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unsigned int bytes_rx; /* Rx byte count */
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unsigned int off_rx; /* Rx buffer offset */
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unsigned char mode_telnet; /* Telnet mode */
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unsigned char mode_rfc2217; /* RFC-2217 mode */
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unsigned int baudrate;
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unsigned char datasize;
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unsigned char parity;
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unsigned char stopsize;
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unsigned char linestate;
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unsigned char modemstate;
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unsigned char linestate_mask;
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unsigned char modemstate_mask;
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char dtr_state;
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char rts_state;
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} tn_ctx_t;
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extern tn_ctx_t *telnet_ctx_init(void *cctx, cli_tx_f * ftx, cli_ss_f * fss);
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extern int telnet_rx(tn_ctx_t * tcc, char *buf, int *plen);
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extern int telnet_tx(tn_ctx_t * tcc, const char *buf, int len);
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extern void telnet_reply_opt(tn_ctx_t * tcc, int opt, int prm,
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const void *val, int len);
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extern void telnet_rfc2217_init(tn_ctx_t * tcc, int when);
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extern void telnet_rfc2217_handle_opt(tn_ctx_t * tcc, int opt,
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unsigned char *pu, int nd);
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extern void telnet_rfc2217_change_linestate(tn_ctx_t * tcc, int mask);
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extern void telnet_rfc2217_change_modemstate(tn_ctx_t * tcc, int mask);
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/* Init modes */
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#define TNI_INIT 0 /* Init context */
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#define TNI_ON 1 /* Option activated */
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/* Signals that may be passed to cli_ss_f() */
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#define TNS_DTR 1
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#define TNS_RTS 2
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#endif /* TELNET_SERVER_H */
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