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/* API for probe.c */
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#ifndef __PROBE_H_
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#define __PROBE_H_
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#include "common.h"
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#include "tls.h"
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typedef enum {
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    PROBE_NEXT,  /* Enough data, probe failed -- it's some other protocol */
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    PROBE_MATCH, /* Enough data, probe successful -- it's the current protocol */
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    PROBE_AGAIN, /* Not enough data for this probe, try again with more data */
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} probe_result;
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struct proto;
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typedef int T_PROBE(const char*, int, struct proto*);
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/* For each protocol we need: */
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struct proto {
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    const char* description;  /* a string that says what it is (for logging and command-line parsing) */
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    const char* service;      /* service name to do libwrap checks */
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    struct addrinfo *saddr; /* list of addresses to try and switch that protocol */
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    /* function to probe that protocol; parameters are buffer and length
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     * containing the data to probe, and a pointer to the protocol structure */
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    T_PROBE* probe;
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    void* data;     /* opaque pointer ; used to pass list of regex to regex probe, or sni hostnames to sni probe */
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    struct proto *next; /* pointer to next protocol in list, NULL if last */
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};
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/* Returns a pointer to the array of builtin protocols */
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struct proto * get_builtins(void);
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/* Returns the number of builtin protocols */
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int get_num_builtins(void);
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/* Returns the probe for specified protocol */
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T_PROBE* get_probe(const char* description);
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/* Returns the head of the configured protocols */
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struct proto* get_first_protocol(void);
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/* Set the list of configured protocols */
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void set_protocol_list(struct proto*);
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/* probe_client_protocol
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 *
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 * Read the beginning of data coming from the client connection and check if
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 * it's a known protocol. Then leave the data on the deferred
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 * write buffer of the connection and returns a pointer to the protocol
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 * structure
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 */
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int probe_client_protocol(struct connection *cnx);
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/* set the protocol to connect to in case of timeout */
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void set_ontimeout(const char* name);
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/* timeout_protocol
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 *
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 * Returns the protocol to connect to in case of timeout
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 */
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struct proto* timeout_protocol(void);
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void hexdump(const char*, unsigned int);
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#endif
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