src/tcptable.h

   1 #ifndef IPTRAF_NG_TCPTABLE_H
   2 #define IPTRAF_NG_TCPTABLE_H
   3
   4 /***
   5
   6    tcptable.h   -- table manipulation for the statistics display.
   7
   8 ***/
   9
  10 #include "packet.h"
  11 #include "rate.h"
  12
  13 /*
  14  * max() macros that also do
  15  * strict type-checking.. See the
  16  * "unnecessary" pointer comparison.
  17  */
  18 #define max(x, y) ({                            \
  19         typeof(x) _max1 = (x);                  \
  20         typeof(y) _max2 = (y);                  \
  21         (void) (&_max1 == &_max2);              \
  22         _max1 > _max2 ? _max1 : _max2; })
  23
  24 #define FLAG_SYN        1
  25 #define FLAG_RST        2
  26 #define FLAG_PSH        4
  27 #define FLAG_ACK        8
  28 #define FLAG_URG        16
  29
  30 #define CLOSED          64
  31
  32 #define ENTRIES_IN_HASH_TABLE   1543
  33
  34 struct tcptableent {
  35         struct sockaddr_storage saddr;
  36         struct sockaddr_storage daddr;
  37         char s_fqdn[45];        /* fully-qualified domain names */
  38         char d_fqdn[45];
  39         int s_fstat;
  40         int d_fstat;
  41         char smacaddr[18];
  42         char s_sname[11];       /* Service names, maxlen=10 */
  43         char d_sname[11];
  44         unsigned int protocol;
  45         unsigned long pcount;   /* packet count */
  46         unsigned long bcount;   /* byte count */
  47         unsigned int stat;      /* TCP flags */
  48         unsigned int win;
  49         unsigned int psize;
  50         unsigned long finack;
  51         int partial;
  52         int finsent;
  53         char ifname[IFNAMSIZ];
  54         unsigned int index;
  55         int reused;
  56         int timedout;
  57         int inclosed;
  58         int half_bracket;
  59         unsigned long spanbr;
  60         struct rate rate;
  61         time_t lastupdate;
  62         time_t conn_starttime;
  63         struct tcp_hashentry *hash_node;
  64         struct tcptableent *oth_connection;     /* the other half of the connection */
  65         struct tcptableent *prev_entry;
  66         struct tcptableent *next_entry;
  67 };
  68
  69 struct closedlist {
  70         struct tcptableent *closedentry;
  71         struct tcptableent *pair;
  72         struct closedlist *next_entry;
  73 };
  74
  75 struct tcp_hashentry {
  76         unsigned int index;
  77         unsigned int hp;        /* index position in bucket array */
  78         struct tcptableent *tcpnode;
  79         struct tcp_hashentry *prev_entry;
  80         struct tcp_hashentry *next_entry;
  81 };
  82
  83 struct tcptable {
  84         struct tcp_hashentry *hash_table[ENTRIES_IN_HASH_TABLE];
  85         struct tcp_hashentry *hash_tails[ENTRIES_IN_HASH_TABLE];
  86         struct tcptableent *head;
  87         struct tcptableent *tail;
  88         struct closedlist *closedentries;
  89         struct closedlist *closedtail;
  90         struct tcptableent *firstvisible;
  91         struct tcptableent *lastvisible;
  92         struct tcptableent *barptr;
  93         unsigned int lastpos;
  94         unsigned int count;
  95         unsigned int bmaxy;     /* number of lines of the border window */
  96         unsigned int imaxy;     /* number of lines inside the border */
  97         int ifnamew;            /* interface name width to display */
  98         int mode;
  99
 100         WINDOW *tcpscreen;
 101         PANEL *tcppanel;
 102         WINDOW *borderwin;
 103         PANEL *borderpanel;
 104         WINDOW *statwin;
 105         PANEL *statpanel;
 106 };
 107
 108 void show_stats(WINDOW *win, unsigned long long total);
 109
 110 void init_tcp_table(struct tcptable *table);
 111
 112 struct tcptableent *addentry(struct tcptable *table,
 113                              struct sockaddr_storage *saddr,
 114                              struct sockaddr_storage *daddr,
 115                              int protocol, char *ifname,
 116                              int *rev_lookup, int rvnamedon);
 117
 118 void mark_timeouted_entries(struct tcptable *table, int logging, FILE *logfile);
 119
 120 struct tcptableent *in_table(struct tcptable *table,
 121                              struct sockaddr_storage *saddr,
 122                              struct sockaddr_storage *daddr,
 123                              char *ifname);
 124
 125 void updateentry(struct tcptable *table, struct pkt_hdr *pkt,
 126                  struct tcptableent *tableentry, struct tcphdr *transpacket,
 127                  unsigned int bcount, int *revlook, int rvnfd, int logging,
 128                  FILE *logfile);
 129
 130 void addtoclosedlist(struct tcptable *table, struct tcptableent *tableentry);
 131
 132 void clearaddr(struct tcptable *table, struct tcptableent *tableentry);
 133
 134 void printentry(struct tcptable *table, struct tcptableent *tableentry);
 135
 136 void refreshtcpwin(struct tcptable *table);
 137
 138 void destroytcptable(struct tcptable *table);
 139
 140 void flushclosedentries(struct tcptable *table);
 141
 142 void write_timeout_log(int logging, FILE *logfile, struct tcptableent *tcpnode);
 143
 144 void writetcplog(int logging, FILE *fd, struct tcptableent *entry,
 145                  unsigned int pktlen, char *message);
 146
 147 void write_tcp_unclosed(int logging, FILE *fd, struct tcptable *table);
 148
 149 #endif  /* IPTRAF_NG_TCPTABLE_H */