136 lines
5.0 KiB
C
136 lines
5.0 KiB
C
/* Copyright (c) 2017 LiteSpeed Technologies Inc. See LICENSE. */
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#ifndef LSQUIC_PARSE_GQUIC_BE_H
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#define LSQUIC_PARSE_GQUIC_BE_H
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/* Header file to make it easy to reference gQUIC parsing functions. This
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* is only meant to be used internally. The alternative would be to place
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* all gQUIC-big-endian functions -- from all versions -- in a single file,
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* and that would be a mess.
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*/
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#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__NetBSD__)
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#include <sys/endian.h>
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#define bswap_16 bswap16
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#define bswap_32 bswap32
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#define bswap_64 bswap64
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#else
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#include <byteswap.h>
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#endif
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#define CHECK_SPACE(need, pstart, pend) \
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do { if ((intptr_t) (need) > ((pend) - (pstart))) { return -1; } } while (0)
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define READ_UINT(varname, varwidth, src, nbytes) do { \
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varname = 0; \
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memcpy((unsigned char *) &varname + varwidth / 8 - (nbytes), (src), \
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(nbytes)); \
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varname = bswap_##varwidth(varname); \
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} while (0)
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#else
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#define READ_UINT(varname, varwidth, src, nbytes) do { \
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varname = 0; \
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memcpy((unsigned char *) &varname + varwidth / 8 - (nbytes), (src), \
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(nbytes)); \
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} while (0)
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#endif
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uint64_t
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gquic_be_read_float_time16 (const void *mem);
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void
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gquic_be_write_float_time16 (lsquic_time_t time_us, void *mem);
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void
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gquic_be_parse_packet_in_finish (lsquic_packet_in_t *packet_in,
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struct packin_parse_state *state);
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int
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gquic_be_gen_ver_nego_pkt (unsigned char *buf, size_t bufsz, uint64_t conn_id,
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unsigned version_bitmask);
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int
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gquic_be_gen_reg_pkt_header (unsigned char *buf, size_t bufsz, const lsquic_cid_t *conn_id,
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const lsquic_ver_tag_t *ver, const unsigned char *nonce,
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lsquic_packno_t packno, enum lsquic_packno_bits bits);
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int
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gquic_be_gen_stream_frame (unsigned char *buf, size_t buf_len, uint32_t stream_id,
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uint64_t offset, gsf_fin_f gsf_fin, gsf_size_f gsf_size,
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gsf_read_f gsf_read, void *stream);
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int
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gquic_be_parse_stream_frame (const unsigned char *buf, size_t rem_packet_sz,
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stream_frame_t *stream_frame);
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lsquic_packno_t
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gquic_be_parse_ack_high (const unsigned char *buf, size_t buf_len);
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int
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gquic_be_parse_ack_frame (const unsigned char *buf, size_t buf_len, ack_info_t *ack);
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int
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gquic_be_gen_stop_waiting_frame(unsigned char *buf, size_t buf_len,
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lsquic_packno_t cur_packno, enum lsquic_packno_bits bits,
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lsquic_packno_t least_unacked_packno);
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int
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gquic_be_parse_stop_waiting_frame (const unsigned char *buf, size_t buf_len,
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lsquic_packno_t cur_packno, enum lsquic_packno_bits bits,
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lsquic_packno_t *least_unacked);
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int
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gquic_be_skip_stop_waiting_frame (size_t buf_len, enum lsquic_packno_bits bits);
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int
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gquic_be_gen_window_update_frame (unsigned char *buf, int buf_len, uint32_t stream_id,
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uint64_t offset);
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int
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gquic_be_parse_window_update_frame (const unsigned char *buf, size_t buf_len,
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uint32_t *stream_id, uint64_t *offset);
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int
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gquic_be_gen_blocked_frame (unsigned char *buf, size_t buf_len, uint32_t stream_id);
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int
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gquic_be_parse_blocked_frame (const unsigned char *buf, size_t buf_len,
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uint32_t *stream_id);
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int
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gquic_be_gen_rst_frame (unsigned char *buf, size_t buf_len, uint32_t stream_id,
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uint64_t offset, uint32_t error_code);
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int
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gquic_be_parse_rst_frame (const unsigned char *buf, size_t buf_len, uint32_t *stream_id,
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uint64_t *offset, uint32_t *error_code);
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int
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gquic_be_gen_ping_frame (unsigned char *buf, int buf_len);
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int
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gquic_be_gen_connect_close_frame (unsigned char *buf, int buf_len, uint32_t error_code,
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const char *reason, int reason_len);
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int
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gquic_be_parse_connect_close_frame (const unsigned char *buf, size_t buf_len,
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uint32_t *error_code, uint16_t *reason_len, uint8_t *reason_offset);
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int
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gquic_be_gen_goaway_frame(unsigned char *buf, size_t buf_len, uint32_t error_code,
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uint32_t last_good_stream_id, const char *reason,
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size_t reason_len);
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int
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gquic_be_parse_goaway_frame (const unsigned char *buf, size_t buf_len,
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uint32_t *error_code, uint32_t *last_good_stream_id,
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uint16_t *reason_length, const char **reason);
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int
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gquic_be_gen_ack_frame (unsigned char *outbuf, size_t outbuf_sz,
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gaf_rechist_first_f rechist_first, gaf_rechist_next_f rechist_next,
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gaf_rechist_largest_recv_f rechist_largest_recv,
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void *rechist, lsquic_time_t now, int *has_missing);
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#endif
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