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ipp2p: internally simplify selecting protocol searches

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This commit is contained in:
Jan Engelhardt
2008-03-26 07:53:10 +01:00
parent 0712d0fdca
commit a1d307e336
3 changed files with 85 additions and 210 deletions
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50
extensions/xt_ipp2p.c
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@@ -749,40 +749,38 @@ search_waste(const unsigned char *payload, const unsigned int plen)
static const struct {
unsigned int command;
__u8 short_hand; /* for fucntions included in short hands */
unsigned int packet_len;
unsigned int (*function_name)(const unsigned char *, const unsigned int);
} matchlist[] = {
{IPP2P_EDK, SHORT_HAND_IPP2P, 20, search_all_edk},
// {IPP2P_DATA_KAZAA, SHORT_HAND_DATA, 200, search_kazaa},
// {IPP2P_DATA_EDK, SHORT_HAND_DATA, 60, search_edk},
// {IPP2P_DATA_DC, SHORT_HAND_DATA, 26, search_dc},
{IPP2P_DC, SHORT_HAND_IPP2P, 5, search_all_dc},
// {IPP2P_DATA_GNU, SHORT_HAND_DATA, 40, search_gnu},
{IPP2P_GNU, SHORT_HAND_IPP2P, 5, search_all_gnu},
{IPP2P_KAZAA, SHORT_HAND_IPP2P, 5, search_all_kazaa},
{IPP2P_BIT, SHORT_HAND_IPP2P, 20, search_bittorrent},
{IPP2P_APPLE, SHORT_HAND_IPP2P, 5, search_apple},
{IPP2P_SOUL, SHORT_HAND_IPP2P, 5, search_soul},
{IPP2P_WINMX, SHORT_HAND_IPP2P, 2, search_winmx},
{IPP2P_ARES, SHORT_HAND_IPP2P, 5, search_ares},
{IPP2P_MUTE, SHORT_HAND_NONE, 200, search_mute},
{IPP2P_WASTE, SHORT_HAND_NONE, 5, search_waste},
{IPP2P_XDCC, SHORT_HAND_NONE, 5, search_xdcc},
{IPP2P_EDK, 20, search_all_edk},
// {IPP2P_DATA_KAZAA, 200, search_kazaa},
// {IPP2P_DATA_EDK, 60, search_edk},
// {IPP2P_DATA_DC, 26, search_dc},
{IPP2P_DC, 5, search_all_dc},
// {IPP2P_DATA_GNU, 40, search_gnu},
{IPP2P_GNU, 5, search_all_gnu},
{IPP2P_KAZAA, 5, search_all_kazaa},
{IPP2P_BIT, 20, search_bittorrent},
{IPP2P_APPLE, 5, search_apple},
{IPP2P_SOUL, 5, search_soul},
{IPP2P_WINMX, 2, search_winmx},
{IPP2P_ARES, 5, search_ares},
{IPP2P_MUTE, 200, search_mute},
{IPP2P_WASTE, 5, search_waste},
{IPP2P_XDCC, 5, search_xdcc},
{0},
};
static const struct {
unsigned int command;
__u8 short_hand; /* for fucntions included in short hands */
unsigned int packet_len;
unsigned int (*function_name)(const unsigned char *, const unsigned int);
} udp_list[] = {
{IPP2P_KAZAA, SHORT_HAND_IPP2P, 14, udp_search_kazaa},
{IPP2P_BIT, SHORT_HAND_IPP2P, 23, udp_search_bit},
{IPP2P_GNU, SHORT_HAND_IPP2P, 11, udp_search_gnu},
{IPP2P_EDK, SHORT_HAND_IPP2P, 9, udp_search_edk},
{IPP2P_DC, SHORT_HAND_IPP2P, 12, udp_search_directconnect},
{IPP2P_KAZAA, 14, udp_search_kazaa},
{IPP2P_BIT, 23, udp_search_bit},
{IPP2P_GNU, 11, udp_search_gnu},
{IPP2P_EDK, 9, udp_search_edk},
{IPP2P_DC, 12, udp_search_directconnect},
{0},
};
@@ -826,8 +824,7 @@ ipp2p_mt(const struct sk_buff *skb, const struct net_device *in,
haystack += tcph->doff * 4; /* get TCP-Header-Size */
hlen -= tcph->doff * 4;
while (matchlist[i].command) {
if (((info->cmd & matchlist[i].command) == matchlist[i].command ||
(info->cmd & matchlist[i].short_hand) == matchlist[i].short_hand) &&
if ((info->cmd & matchlist[i].command) == matchlist[i].command &&
hlen > matchlist[i].packet_len)
{
p2p_result = matchlist[i].function_name(haystack, hlen);
@@ -848,8 +845,7 @@ ipp2p_mt(const struct sk_buff *skb, const struct net_device *in,
const struct udphdr *udph = udp_hdr(skb);
while (udp_list[i].command) {
if (((info->cmd & udp_list[i].command) == udp_list[i].command ||
(info->cmd & udp_list[i].short_hand) == udp_list[i].short_hand) &&
if ((info->cmd & udp_list[i].command) == udp_list[i].command &&
hlen > udp_list[i].packet_len)
{
p2p_result = udp_list[i].function_name(haystack, hlen);