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105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
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/*
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p0f - HTTP fingerprinting
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-------------------------
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Copyright (C) 2012 by Michal Zalewski <lcamtuf@coredump.cx>
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Distributed under the terms and conditions of GNU LGPL.
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*/
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#ifndef _HAVE_FP_HTTP_H
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#define _HAVE_FP_HTTP_H
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#include "types.h"
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/* A structure used for looking up various headers internally in fp_http.c: */
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struct http_id {
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char* name;
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u32 id;
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};
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/* Another internal structure for UA -> OS maps: */
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struct ua_map_record {
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u8* name;
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u32 id;
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};
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/* HTTP header field: */
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struct http_hdr {
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s32 id; /* Lookup ID (-1 = none) */
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u8* name; /* Text name (NULL = use lookup ID) */
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u8* value; /* Value, if any */
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u8 optional; /* Optional header? */
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};
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/* Request / response signature collected from the wire: */
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struct http_sig {
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s8 http_ver; /* HTTP version (-1 = any) */
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struct http_hdr hdr[HTTP_MAX_HDRS]; /* Mandatory / discovered headers */
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u32 hdr_cnt;
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u64 hdr_bloom4; /* Bloom filter for headers */
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u32 miss[HTTP_MAX_HDRS]; /* Missing headers */
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u32 miss_cnt;
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u8* sw; /* Software string (U-A or Server) */
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u8* lang; /* Accept-Language */
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u8* via; /* Via or X-Forwarded-For */
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u32 date; /* Parsed 'Date' */
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u32 recv_date; /* Actual receipt date */
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/* Information used for matching with p0f.fp: */
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struct http_sig_record* matched; /* NULL = no match */
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u8 dishonest; /* "sw" looks forged? */
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};
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/* Record for a HTTP signature read from p0f.fp: */
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struct http_sig_record {
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s32 class_id; /* OS class ID (-1 = user) */
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s32 name_id; /* OS name ID */
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u8* flavor; /* Human-readable flavor string */
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u32 label_id; /* Signature label ID */
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u32* sys; /* OS class / name IDs for user apps */
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u32 sys_cnt; /* Length of sys */
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u32 line_no; /* Line number in p0f.fp */
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u8 generic; /* Generic signature? */
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struct http_sig* sig; /* Actual signature data */
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};
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/* Register new HTTP signature. */
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struct packet_flow;
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void http_parse_ua(u8* val, u32 line_no);
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void http_register_sig(u8 to_srv, u8 generic, s32 sig_class, u32 sig_name,
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u8* sig_flavor, u32 label_id, u32* sys, u32 sys_cnt,
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u8* val, u32 line_no);
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u8 process_http(u8 to_srv, struct packet_flow* f);
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void free_sig_hdrs(struct http_sig* h);
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void http_init(void);
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#endif /* _HAVE_FP_HTTP_H */
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