2010-09-04 21:33:53 +02:00
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< title > Snort AI preprocessor module: Manage streams, sorting them into hash tables and linked lists< / title >
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< h1 > Manage streams, sorting them into hash tables and linked lists< / h1 > < / div >
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< tr > < td colspan = "2" > < h2 > < a name = "func-members" > < / a >
Functions< / h2 > < / td > < / tr >
< tr > < td class = "memItemLeft" align = "right" valign = "top" > PRIVATE void < / td > < td class = "memItemRight" valign = "bottom" > < a class = "el" href = "group__stream.html#ga80016adf701c717a6ebfb5b15b8a5749" > _AI_stream_free< / a > (struct < a class = "el" href = "structpkt__info.html" > pkt_info< / a > *stream)< / td > < / tr >
< tr > < td class = "mdescLeft" > < / td > < td class = "mdescRight" > Remove a stream from the hash table (private function). < a href = "#ga80016adf701c717a6ebfb5b15b8a5749" > < / a > < br / > < / td > < / tr >
< tr > < td class = "memItemLeft" align = "right" valign = "top" > void * < / td > < td class = "memItemRight" valign = "bottom" > < a class = "el" href = "group__stream.html#ga24b1131374e5059564b8a12380c4eb75" > AI_hashcleanup_thread< / a > (void *arg)< / td > < / tr >
< tr > < td class = "mdescLeft" > < / td > < td class = "mdescRight" > Thread called for cleaning up the hash table from the traffic streams older than a certain threshold. < a href = "#ga24b1131374e5059564b8a12380c4eb75" > < / a > < br / > < / td > < / tr >
< tr > < td class = "memItemLeft" align = "right" valign = "top" > void < / td > < td class = "memItemRight" valign = "bottom" > < a class = "el" href = "group__stream.html#ga7d71c5645b9baff7b6c4b9a181bf80c5" > AI_pkt_enqueue< / a > (SFSnortPacket *pkt)< / td > < / tr >
< tr > < td class = "mdescLeft" > < / td > < td class = "mdescRight" > Function called for appending a new packet to the hash table, creating a new stream or appending it to an existing stream. < a href = "#ga7d71c5645b9baff7b6c4b9a181bf80c5" > < / a > < br / > < / td > < / tr >
< tr > < td class = "memItemLeft" align = "right" valign = "top" > struct < a class = "el" href = "structpkt__info.html" > pkt_info< / a > * < / td > < td class = "memItemRight" valign = "bottom" > < a class = "el" href = "group__stream.html#ga2efedcabbfd12c5345f0c93a3dd4735c" > AI_get_stream_by_key< / a > (struct < a class = "el" href = "structpkt__key.html" > pkt_key< / a > key)< / td > < / tr >
< tr > < td class = "mdescLeft" > < / td > < td class = "mdescRight" > Get a TCP stream by key. < a href = "#ga2efedcabbfd12c5345f0c93a3dd4735c" > < / a > < br / > < / td > < / tr >
< tr > < td class = "memItemLeft" align = "right" valign = "top" > void < / td > < td class = "memItemRight" valign = "bottom" > < a class = "el" href = "group__stream.html#ga8749989cee2ac05a7de058faac280c02" > AI_set_stream_observed< / a > (struct < a class = "el" href = "structpkt__key.html" > pkt_key< / a > key)< / td > < / tr >
< tr > < td class = "mdescLeft" > < / td > < td class = "mdescRight" > Set the flag "observed" on a stream associated to a security alert, so that it won't be removed from the hash table. < a href = "#ga8749989cee2ac05a7de058faac280c02" > < / a > < br / > < / td > < / tr >
< / table >
< hr / > < h2 > Function Documentation< / h2 >
< a class = "anchor" id = "ga80016adf701c717a6ebfb5b15b8a5749" > < / a > <!-- doxytag: member="stream.c::_AI_stream_free" ref="ga80016adf701c717a6ebfb5b15b8a5749" args="(struct pkt_info *stream)" -->
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< td class = "memname" > PRIVATE void _AI_stream_free < / td >
< td > (< / td >
< td class = "paramtype" > struct < a class = "el" href = "structpkt__info.html" > pkt_info< / a > * < / td >
< td class = "paramname" > < em > stream< / em > < / td >
< td > ) < / td >
< td > < / td >
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< div class = "memdoc" >
< p > Remove a stream from the hash table (private function). < / p >
< dl > < dt > < b > Parameters:< / b > < / dt > < dd >
< table border = "0" cellspacing = "2" cellpadding = "0" >
< tr > < td valign = "top" > < / td > < td valign = "top" > < em > stream< / em > < / td > < td > Stream to be removed < / td > < / tr >
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< / dd >
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< a class = "anchor" id = "ga2efedcabbfd12c5345f0c93a3dd4735c" > < / a > <!-- doxytag: member="stream.c::AI_get_stream_by_key" ref="ga2efedcabbfd12c5345f0c93a3dd4735c" args="(struct pkt_key key)" -->
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< td class = "memname" > struct < a class = "el" href = "structpkt__info.html" > pkt_info< / a > * AI_get_stream_by_key < / td >
< td > (< / td >
< td class = "paramtype" > struct < a class = "el" href = "structpkt__key.html" > pkt_key< / a > < / td >
< td class = "paramname" > < em > key< / em > < / td >
< td > ) < / td >
< td > < code > [read]< / code > < / td >
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< p > Get a TCP stream by key. < / p >
< dl > < dt > < b > Parameters:< / b > < / dt > < dd >
< table border = "0" cellspacing = "2" cellpadding = "0" >
< tr > < td valign = "top" > < / td > < td valign = "top" > < em > key< / em > < / td > < td > Key of the stream to be picked up (struct < a class = "el" href = "structpkt__key.html" > pkt_key< / a > ) < / td > < / tr >
< / table >
< / dd >
< / dl >
< dl class = "return" > < dt > < b > Returns:< / b > < / dt > < dd > A < a class = "el" href = "structpkt__info.html" > pkt_info< / a > pointer to the stream if found, NULL otherwise < / dd > < / dl >
< / div >
< / div >
< a class = "anchor" id = "ga24b1131374e5059564b8a12380c4eb75" > < / a > <!-- doxytag: member="stream.c::AI_hashcleanup_thread" ref="ga24b1131374e5059564b8a12380c4eb75" args="(void *arg)" -->
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< td class = "memname" > void* AI_hashcleanup_thread < / td >
< td > (< / td >
< td class = "paramtype" > void * < / td >
< td class = "paramname" > < em > arg< / em > < / td >
< td > ) < / td >
< td > < / td >
< / tr >
< / table >
< / div >
< div class = "memdoc" >
< p > Thread called for cleaning up the hash table from the traffic streams older than a certain threshold. < / p >
< dl > < dt > < b > Parameters:< / b > < / dt > < dd >
< table border = "0" cellspacing = "2" cellpadding = "0" >
< tr > < td valign = "top" > < / td > < td valign = "top" > < em > arg< / em > < / td > < td > Pointer to the < a class = "el" href = "structAI__config.html" > AI_config< / a > struct < / td > < / tr >
< / table >
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< a class = "anchor" id = "ga7d71c5645b9baff7b6c4b9a181bf80c5" > < / a > <!-- doxytag: member="stream.c::AI_pkt_enqueue" ref="ga7d71c5645b9baff7b6c4b9a181bf80c5" args="(SFSnortPacket *pkt)" -->
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< td class = "memname" > void AI_pkt_enqueue < / td >
< td > (< / td >
< td class = "paramtype" > SFSnortPacket * < / td >
< td class = "paramname" > < em > pkt< / em > < / td >
< td > ) < / td >
< td > < / td >
< / tr >
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< p > Function called for appending a new packet to the hash table, creating a new stream or appending it to an existing stream. < / p >
< dl > < dt > < b > Parameters:< / b > < / dt > < dd >
< table border = "0" cellspacing = "2" cellpadding = "0" >
< tr > < td valign = "top" > < / td > < td valign = "top" > < em > pkt< / em > < / td > < td > Packet to be appended < / td > < / tr >
< / table >
< / dd >
< / dl >
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< a class = "anchor" id = "ga8749989cee2ac05a7de058faac280c02" > < / a > <!-- doxytag: member="stream.c::AI_set_stream_observed" ref="ga8749989cee2ac05a7de058faac280c02" args="(struct pkt_key key)" -->
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< div class = "memproto" >
< table class = "memname" >
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< td class = "memname" > void AI_set_stream_observed < / td >
< td > (< / td >
< td class = "paramtype" > struct < a class = "el" href = "structpkt__key.html" > pkt_key< / a > < / td >
< td class = "paramname" > < em > key< / em > < / td >
< td > ) < / td >
< td > < / td >
< / tr >
< / table >
< / div >
< div class = "memdoc" >
< p > Set the flag "observed" on a stream associated to a security alert, so that it won't be removed from the hash table. < / p >
< dl > < dt > < b > Parameters:< / b > < / dt > < dd >
< table border = "0" cellspacing = "2" cellpadding = "0" >
< tr > < td valign = "top" > < / td > < td valign = "top" > < em > key< / em > < / td > < td > Key of the stream to be set as "observed" < / td > < / tr >
< / table >
< / dd >
< / dl >
< / div >
< / div >
< / div >
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2010-09-11 02:12:39 +02:00
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2010-09-04 21:33:53 +02:00
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