req_resp_hdrs.h

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#pragma once
#include "ws_symbol_export.h"
#include <epan/packet.h>
#include <wsutil/strtoi.h>

WS_DLL_PUBLIC bool req_resp_hdrs_parse_content_length(const char *value,
                              int64_t *content_length);

WS_DLL_PUBLIC bool req_resp_hdrs_do_reassembly(
    tvbuff_t *tvb, const int offset, packet_info *pinfo,
    const bool desegment_headers, const bool desegment_body,
    bool desegment_until_fin, bool allow_content_length_list,
    int *last_chunk_offset, dissector_table_t streaming_subdissector_table,
    dissector_handle_t *streaming_chunk_handle);

static inline bool
starts_with_chunk_size(tvbuff_t *tvb, const int offset, packet_info *pinfo) {
    unsigned chunk_size = 0;
    unsigned linelen;
 
    if (!tvb_find_line_end_remaining(tvb, offset, &linelen, NULL))
        return false;
 
    char *chunk_string = (char *)tvb_get_string_enc(pinfo->pool, tvb, offset, linelen, ENC_ASCII);
    char *c = chunk_string;
 
    /* ignore extensions, including optional BWS ("bad whitespace")
     * in the grammar for historical reasons, see RFC 9112 7.1.1.
     */
    if ((c = strpbrk(c, "; \t"))) {
        *c = '\0';
    }
 
    if (!ws_hexstrtou32(chunk_string, NULL, &chunk_size)) {
        return false; /* can not get chunk size*/
    } else if (chunk_size > (1U << 31)) {
        return false; /* chunk size is unreasonable */
    }
    return true;
}