×עך ׊×× ×€×× ××¢× ×€ÖŒ×š×××¢×§× ××× ××¢×××¢×:
- ××¢×š× ×¢× ×××¢×× DHCP ××××£ ×Ö·× IPv4 × ×¢×¥
- ××¢×š× ×¢× ×€ÖŒ××××Öž× (×Ö· ×××¡× ×עך ××× ×€Ö¿×× ×§×š×Ö·×Š× ð)
- סעך××עך ×€×ַך×××Ö·×
DB2DHCP (×××× ××Öž×€ÖŒ×), ×֞ך×××× ×¢×××Öž , ×××֞ס ××× ×©××× ×עך ××× ×עך ש××עך ×Š× ×ַסע×××Ö·× ×€Ö¿×ַך ×× × ××Ö·×¢ ×ַס. ××× ××× ××Öž× × ×× ××× ×Ö·× ×¢×¡ ××× ×Ö· ×××× ×¢×š× ×Ö·× ×¢×¡ ××× ×§××× ×××¢× ×Š× "××××©× ×š×¢×× ××׊×" - קך××× ×Ö· ×ך××¢×× DHCP סעך××עך ××× ×× ×€×××ק××× ×Š× ×¡×¢×עק×××š× ××¢× IP ×Ö·×ךעס ×€×× ×× ×Ö·××Öž× ×¢× × × ××Š× ×× ×עק ×€×× ×× ×Ö·××Öž× ×¢× × ×Öž×עך ××ַש××××¢× ×עק + ×€ÖŒ×Öž×š× ×§×Öž×××× ×ַ׊××¢ (×֞׀֌׊××¢ 82)
- שך×××× ×× ×× ×עך ×××ק (×Öž×! ××֞ס ××× ×××× ××Ö·×××ס××¢ ××¢××ק×××)
- ××ַק×××¢× ××Ö·×עךק×× ××¢× ×××¢×× ×××× ×§×××-××Ö·× ×××× ×ַס ××××£ ××ך×××ך (×Öž×עך ×עסעך × ×Öž×, ×Ö· ×€×ַך××¢××× ×) ð
ךע×××××Ö·×: עס ×ַך××¢× ð ×עס××¢× ××××£ FreeBSD ××× Ubuntu OS. ×××¢×֞ךע××ק×Ö·×××, ×× ×§×Öž× ×§×¢× ×¢× ×××× ××¢××¢×× ×Š× ×ַך××¢×× ××× ×עך ק××× ×ַס, ××××Ö·× ×¢×¡ ××סק×××¢× ×Š× ×××× ×§××× ×¡×€ÖŒ×¢×Š××€×ש ×××× ××× ×× ××× ×× ×§×Öž×.
קעך׀×Ö·××! עס ××× ×€×× ×עך ×Š× ×§×××¢×.
××× ×§ ×Š× ×š××€ÖŒ×Ö·××Ö·××Öž×š× ×€Ö¿×ַך ×Ö·××Ö·×שעך×
×עך ׀֌ך×֞׊עס ×€×× ×× ×¡××Öž××× ×, ק×Ö·× ×€×××עך×× × ××× × ××Š× ×× ×š×¢×××××Ö·× ×€×× "ש××¢×š× ×× ××Ö·×× ×××ַך×" ××× ×€×× × ××עך×קעך, ××× ××¢××Öž×× ×Ö· ×××¡× ××¢×֞ך××¢ ×××¢×× ×× DHCP ׀֌ך×Öž××֞ק×Öž×. ×€Ö¿×ַך ×××. ××× ×€Ö¿×ַך ×עש××××¢ ð
× ×××¡× ××¢×֞ך××¢
×××֞ס ××× DHCP
××֞ס ××× ×Ö· × ×¢×¥ ׀֌ך×Öž××֞ק×Öž× ×××֞ס ×Ö·××Ö·×× ×Ö· ×××× ×Š× ××¢×€Ö¿×× ×¢× ×××× IP ×Ö·×ךעס (××× ×× ×עךע ×€ÖŒ×ַך×Ö·××¢×עךס ××× ××××××××, ×× ×¡, ×××"× ×) ×€Ö¿×× ×Ö· DHCP סעך××עך. ×€ÖŒ×ַק××¥ ××¢× ×¢× ×€×ך×××× ××× ×× UDP ׀֌ך×Öž××֞ק×Öž×. ×עך ××¢× ×¢×š×Ö·× ×€ÖŒ×š×× ×Š××€ÖŒ ×€×× ×֞׀֌עך×ַ׊××¢ ×€×× ââ×× ×××× ×××¢× ×š×ק××עס××× × × ×¢×¥ ×€ÖŒ×ַך×Ö·××¢×עךס ××× ××× ××××:
- ×עך ×××× (ק×××¢× ×) ×¡×¢× ×× ×Ö· UDP ×ך×Öž×ק×Ö·×¡× ××¢×× (DHCPDISCOVER) ×××עך ×× × ×¢×¥ ××× ×× ××¢×× "× ×, ×¢×ע׊עך ××¢×× ××ך ×Ö·× IP ×Ö·×ךעס." ×עך׊×, ×××ש×Ö·×××Ö·×× (×Öž×עך × ×× ×©××¢× ××ק) ×× ××¢×× ×Ö·×§×¢×š× ×€Ö¿×× ×€ÖŒ×Öž×š× 68 (×ק×ך), ××× ×× ×עס××× ××ש×Ö·× ××× ×€ÖŒ×Öž×š× 67 (×עס××× ××ש×Ö·×). ×¢×××¢××¢ ××¢×××סעס ×××× ×©××§× ×€ÖŒ×ַק××¥ ×€Ö¿×× ×€ÖŒ×Öž×š× 67. ×× MAC ×Ö·×ךעס ×€×× ××¢× ×§×××¢× × ×××× ××× ×ַך××Ö·× ×עךע×× × ××× ×× DHCPDISCOVER ׀֌עק×.
- ×× DHCP סעך××עךס ×××× ××××£ ×× × ×¢×¥ (××× ×¢×¡ ×§×¢× ×××× ×¢×××¢××¢ ×€×× ââ×××) ×€×Öž×š×¢× ×Ö· DHCPOFFER ×€×֞ךש××Öž× ××× × ×¢×¥ סע×××× ×ס ×€Ö¿×ַך ×× ×××× ×××֞ס ×עש××§× DHCPDISCOVER ××× ×××× ×ך×Öž×ק×Ö·×¡× ×¢×¡ ×××עך ×× × ×¢×¥. ××¢××××××ַ׊××¢ ×€×× ââ×××֞ס ××֞ס ×€ÖŒ×ַק×Ö·× ××× ×××¢× ×€Ö¿×ַך ××× ×××××š× ××××£ ×× MAC ×Ö·×ךעס ×€×× ××¢× ×§×××¢× × ×Š××עש××¢×× ×€×š×עך ××× ×× DHCPDISCOVER ××¢××.
- ×עך ק×××¢× × ×ַקסע׀֌ץ ×€ÖŒ×ַק××¥ ××× ×€ÖŒ×š×Ö·×€ÖŒ×Öž×××Ö·×× ×€Ö¿×ַך × ×¢×¥ סע×××× ×ס, ס×Ö·×עקץ ×× ××¢×š×¡× ×Ö·×ך×ַק×××× ×××× ×¢×š (×× ×§×š××××ך××Ö· ×§×¢× ×××× ×Ö·× ×עךש, ××ש×, ×× ×Š××× ×€×× ×€ÖŒ×ַק×Ö·× ×¢×§×¡×€ÖŒ×š×¢×¡, ×× × ××עך ×€×× ×× ×עך×××××× ×š××¥) ××× ×××× ×Ö· "××Ö·×Ö·××עך ××¢××" DHCPREQUEST ××× ×× × ×¢×¥ סע×××× ×ס ×€×× ×× DHCP סעך××עך עס ×××קס. ××× ××¢× ×€×Ö·×, ×× ×€ÖŒ×ַק×Ö·× ×××× ×Š× ×Ö· ס׀֌ע׊××€×ש DHCP סעך××עך.
- ×עך סעך××עך ×××֞ס ××ק×××¢× ×× DHCPREQUEST ×¡×¢× ×× ×Ö· DHCPACK ×€Ö¿×֞ך××Ö·× ×€ÖŒ×ַק×Ö·×, ××× ×××֞ס עס ×Ö·××Öž× ××××עך ךש×××ת ×× × ×¢×¥ סע×××× ×ס ×××¢× ×€Ö¿×ַך ××¢× ×§×××¢× ×
××× ×Ö·××ש×Ö·×, עס ××¢× ×¢× DHCPINFORM ×€ÖŒ×ַק××¥ ×××֞ס ק×××¢× ×€×× ××¢× ×§×××¢× ×, ××× ×עך ׊×× ×€×× ×××֞ס ××× ×Š× ×××××××× ×× DHCP סעך××עך ×Ö·× ×עך "ק×××¢× × ××× ××¢××¢××ק" ××× ××× × ××Š× ×× ×ך××ס × ×¢×¥ סע×××× ×ס. ××× ×× ×××€ÖŒ××Ö·××¢× ×××ש×Ö·× ×€×× ××¢× ×¡×¢×š××עך, ×× ×€ÖŒ×ַק××¥ ××¢× ×¢× ×××× ×֞ך×ך×.
×€ÖŒ×¢×§× ×€Ö¿×֞ך××Ö·×
××× ×Ö·×××¢××××, ×Ö· ×¢×××¢×š× ×¢× ×€ÖŒ×ַק×Ö·× ×š×Ö·× ×§××§× ×¢×€ÖŒ×¢×¡ ××× ××֞ס:
××× ××× ××עך ×€×Ö·×, ××ך ×××¢×× ××Ö·×ך×Ö·××× ××××× ×× ××Ö·×× ××××Ö·× ×€Ö¿×× ×× ××× ××Ö·×× ×€×× ×× UDP ×€ÖŒ×ַק×Ö·×, ×Öž× OSI ש××××¢ ׀֌ך×Öž××֞ק×Öž× ××¢×עך×, × ××××× ×× DHCP ס×ך×ק××ך:
××ק׀֌××סק×Öž××עך
×עך ׀֌ך×֞׊עס ×€×× ×§×š××× ×Ö·× IP ×Ö·×ךעס ×€Ö¿×ַך ×Ö· ×××× ××××× ××× ×Öž× ××× ×× DHCP ק×××¢× × ×©××§× ×Ö· ×ך×Öž×ק×Ö·×¡× ××¢×× ×€Ö¿×× ×€ÖŒ×Öž×š× 68 ×Š× 255.255.255.255:67. ××× ××¢× ×€ÖŒ×¢×§×, ×עך ק×××¢× × ×××× ×××× MAC ×Ö·×ךעס, ××× ×××֞ס ×€ÖŒ×× ×§× ×¢×¡ ×××× ×Š× ××ַק×××¢× ×€Ö¿×× ×× DHCP סעך××עך. ×× ×€ÖŒ×¢×§× ×¡×ך×ק××ך ××× ××סקך×××× ××× ×× ××ש ××× ××.
DHCPDISCOVER ×€ÖŒ×ַק×Ö·× ×¡×ך×ק××ך ××ש
×Öž×š× ××× ××¢× ×€ÖŒ×¢×§×
×××¢×š× × ×Öž××¢×
×××ַש׀֌××
×ק×××
××××¢
ק×עך×Ö·×€×ַק××ש×Ö·×
1
ש××××× ××¢××
1
×עקס
1
×Öž× ××Öž× ×××€ÖŒ. 1 - ××¢×× ×€×× ×§×××¢× × ×Š× ×¡×¢×š××עך, 2 - ×¢× ×׀עך ×€×× ×¡×¢×š××עך ×Š× ×§×××¢× ×
2
××ַך××××ַךע ×××€ÖŒ
1
×עקס
1
×××€ÖŒ ×€×× ××Ö·×× ×××Ö·×š× ×Ö·×ךעס, ××× ××¢× ×€ÖŒ×š×Öž××֞ק×Öž× 1 - MAC
3
××ַך××××ַךע ×××¢× ×× ××¢× ×
6
×עקס
1
×× ××¢× × ×€×× ×× MAC ×Ö·×ךעס ×€×× ×× ××××
4
××֞׀֌ס
1
×עקס
1
× ××עך ×€×× ×× ×עך×××××× ×š××¥
5
×ך×Ö·× ×¡×ַק×××Öž× ×©××Ö·×
23:cf:de:1×
×עקס
4
××× ×Š×ק ×ך×Ö·× ×¡×ַק×××Öž× ×××¢× ×××€×עך. ×××©×¢× ×¢×š××××Ö·× ×××š× ×עך ק×××¢× × ××× ×× ×Öž× ×××× ×€×× ×Ö· ××§×©× ×֞׀֌עך×ַ׊××¢
7
׊װײ××¢ ך ×× × ××ך×××¢××× ××¢×
0
×עקס
4
׊××× ××× ×¡×¢×§×× ×עס ×€×× ×× ×Öž× ×××× ×€×× ××¢× ×€ÖŒ×š×֞׊עס ×€×× ××ַק×××¢× ×Ö·× ×Ö·×ךעס
9
ש××××× ×€××Ö·×ס
0
×עקס
2
×××עך ×€××Ö·×ס ×××֞ס ×§×¢× ×¢× ×××× ××ַש×××× ×Š× ×Öž× ××××Ö·×× ×€ÖŒ×š×Öž××֞ק×Öž× ×€ÖŒ×ַך×Ö·××¢×עךס
11
ק×××¢× × IP ×Ö·×ךעס
0.0.0.0
×€ÖŒ×ַס
4
ק×××¢× × IP ×Ö·×ךעס (×××× ×§×××)
15
×××× ×§×××¢× × IP ×Ö·×ךעס
0.0.0.0
×€ÖŒ×ַס
4
IP ×Ö·×ךעס ××¢×€Ö¿×× × ×××š× ×× ×¡×¢×š××עך (×××× ×× ××׊×)
19
××××Ö·×עך סעך××עך IP ×Ö·×ךעס
0.0.0.0
×€ÖŒ×ַס
4
סעך×××ךעך IP ×Ö·×ךעס (×××× ××ק×× ×)
23
ך×××× ×Ö·××¢× × IP ×Ö·×ךעס
172.16.114.41
×€ÖŒ×ַס
4
IP ×Ö·×ךעס ×€×× ×× ×š×¢××¢ ×Ö·××¢× × (××ש×, ×Ö· ××ַש××××¢×)
27
ק×××¢× × MAC ×Ö·×ךעס
14:d6:4d:a7:c9:55
×עקס
6
MAC ×Ö·×ךעס ×€×× ×× ×€ÖŒ×ַק×Ö·× ×¡×¢× ×עך (ק×××¢× ×)
31
ק×××¢× × ××Ö·×× ×××Ö·×š× ×Ö·×ךעס ×××Ö·××
×עקס
10
ךע×עך××××š× ×Ö·××עק×ע׊×. ×××ש×Ö·×××Ö·×× ×Öž× ××¢×€××× ××× ×עך×֞ס
41
סעך×××ךעך ××Ö·××¢××֞ס × ×Öž××¢×
×€ÖŒ×ַס
64
DHCP סעך××עך × ×Öž××¢×. ×××ש×Ö·×××Ö·×× × ×× ×ך×Ö·× ×¡×××××¢×
105
ש××××× ×עקע × ×Öž××¢×
×€ÖŒ×ַס
128
×עקע × ×Öž××¢× ××××£ ×× ×¡×¢×š××עך ××¢× ××Š× ×××š× ××סק×עסס ס×××ש×Ö·× × ×××¢× ××××× ×
235
××Ö·××ק ק××××¢×
×§×¡× ××קס: ×§×¡× ××קס: ×§×¡× ××קס: ×§×¡× ××קס
×עקס
4
"××Ö·××ש" × ××עך, ×××× ×××֞ס, ×× ×§×. ××ך ×§×¢× ×¢× ××ַש××××¢× ×Ö·× ××¢× ×€ÖŒ×ַק×Ö·× ××¢××¢×š× ×Š× ×× DHCP ׀֌ך×Öž××֞ק×Öž×
DHCP ×֞׀֌׊×עס. ×§×¢× ×¢× ×××× ××× ×§××× ×¡×ך
236
×֞׀֌׊××¢ × ××עך
53
×ע׊ע××עך
1
×֞׀֌׊××¢ 53, ×××֞ס ס׀֌ע׊××€×׊××š× ×× DHCP ×€ÖŒ×ַק×Ö·× ×××€ÖŒ
1 - DHCP ××סק×Öž××עך
3 - DHCPREQUEST
2 - DHCPOFFER
5 - DHCPACK
8 - DHCPINFORM
×֞׀֌׊××¢ ××¢× ×
1
×ע׊ע××עך
1
×֞׀֌׊××¢ ××עך×
1
×ע׊ע××עך
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×֞׀֌׊××¢ × ××עך
50
×ע׊ע××עך
1
×××֞ס IP ×Ö·×ךעס ××× ×עך ק×××¢× × ××××× ×Š× ××ַק×××¢×?
×֞׀֌׊××¢ ××¢× ×
4
×ע׊ע××עך
1
×֞׀֌׊××¢ ××עך×
172.16.134.61
×€ÖŒ×ַס
4
×֞׀֌׊××¢ × ××עך
55
1
× ×¢×¥ ×€ÖŒ×ַך×Ö·××¢×עךס ××¢××¢×× ×××š× ×עך ק×××¢× ×. ×× ××Ö·×¥ ×§×¢× ×××× ×Ö·× ×עךש
01 - × ×¢×¥ ××ַסקע
03 - ××××××××
06 - ×× ×¡
oc â ××֞ס×× ×Ö·××¢
0f - × ×¢×¥ ×€×¢×× × ×Öž××¢×
1c - ×Ö·×ךעס ×€×× ×ך×Öž×ק×Ö·×¡× ××¢×× (×ך×Öž×ק×ַס×)
42 - ××€××€ÖŒ סעך××עך × ×Öž××¢×
79 - ק××ַס××ַס ס××Ö·××ק ך××
×֞׀֌׊××¢ ××¢× ×
8
1
×֞׀֌׊××¢ ××עך×
01:03:06:0c:0f:1c:42:79
8
×֞׀֌׊××¢ × ××עך
82
×ע׊ע××עך
×֞׀֌׊××¢ 82, ×××֞ס ×ך×Ö·× ×¡×××× ×× MAC ×Ö·×ךעס ×€×× ×× ×š×¢×€ÖŒ×¢×Ö·×עך ×××× ××× ×¢×××¢××¢ × ×Öž× ×××Ö·××עס.
ך××Ö¿ ×Öž×€×, ××֞ס ××× ×× ×€ÖŒ×Öž×š× ×€×× ×× ××ַש××××¢× ××××£ ×××֞ס ×עך ס××£ DHCP ק×××¢× × ××××€×. ×עך ×֞׀֌׊××¢ ×ÖŒ××× × ×Öž× ×€ÖŒ×ַך×Ö·××¢×עךס. ×עך עךש×עך ×××× ××× ×× × ××עך ×€×× ×× "ס×××Öž×€ÖŒ×××Öž×", ×× ×š××¢ ××× ×××Ö·× ××¢× ×, ××¢××Öž×× ×××Ö·× ××עך×.
××× ××¢× ×€×Ö·×, ××× ×֞׀֌׊××¢ 82, ×× ×¡×Ö·×-×֞׀֌׊×עס ××¢× ×¢× × ×¢×¡××¢×:
Agent Circuit ID = 00:04:00:01:00:04, ××× ×× ×ע׊××¢ ׊×××× ×××עס ××¢× ×¢× ×× DHCP ק×××¢× × ×€ÖŒ×Öž×š× ×€×× ×××֞ס ×× ××¢×× ×עק×××¢×
×Ö·××¢× × ×š×××Öž×× ×©××Ö·× = 00:06:c8:be:19:93:11:48 - MAC ×Ö·×ךעס ×€×× ×× DHCP ךע׀֌ע×Ö·×עך ××××
×֞׀֌׊××¢ ××¢× ×
18
×ע׊ע××עך
×֞׀֌׊××¢ ××עך×
01:06
00:04:00:01:00:04
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00:06:c8:be:19:93:11:48
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ס××£ ×€×× ×€ÖŒ×¢×§×
255
×ע׊ע××עך
1
255 ס××××Ö·×××××Ö·× ×× ×¡××£ ×€×× ×× ×€ÖŒ×ַק×Ö·×
DHCPOFFER
××× ××Ö·×× ××× ×עך סעך××עך ××ק××× ×× DHCPDISCOVER ×€ÖŒ×ַק×Ö·× ××× ×××× ×¢×¡ ××¢× ×Ö·× ×¢×¡ ×§×¢× ×€×֞ךש××Öž×× ××¢× ×§×××¢× × ×¢×€ÖŒ×¢×¡ ×€×× ×× ××¢××¢×× ×××× ×¢×š, עס ×××©×¢× ×¢×š×××¥ ×Ö· ×¢× ×׀עך ×€Ö¿×ַך ××× - DHCPDISCOVER. ×עך ×¢× ×׀עך ××× ×עש××§× ×Š× ×× ×€ÖŒ×Öž×š× "×€×× ××× ×¢×¡ ×עק×××¢×", ×××š× ×ך×Öž×ק×ַס×, ××××Ö·× ××× ××¢× ××Öž××¢× ×, ×עך ק×××¢× × ××× × ×Öž× × ××©× ×Ö·× IP ×Ö·×ךעס, ×עך××עך עס ×§×¢× × ×֞ך ×Öž× × ×¢××¢× ××¢× ×€ÖŒ×ַק×Ö·× ×××× ×¢×¡ ××× ×עש××§× ×××š× ×ך×Öž×ק×ַס×. ×עך ק×××¢× × ×× ×¢×š×§×¢× × ×Ö·× ××֞ס ××× ×Ö· ×€ÖŒ×¢×§× ×€Ö¿×ַך ××× ×××š× ×××× MAC ×Ö·×ךעס ××× ××¢× ×€ÖŒ×¢×§×, ××× ××¢××× × ××× ×× ×ך×Ö·× ×¡×ַק×××Öž× × ××עך ×××֞ס עך ×××©×¢× ×¢×š×××¥ ××× ×עך ׊××× ×××¢× ×עך עךש×עך ×€ÖŒ×¢×§× ××× ××ש××€×.
DHCPOFFER ×€ÖŒ×ַק×Ö·× ×¡×ך×ק××ך ××ש
×Öž×š× ××× ××¢× ×€ÖŒ×¢×§×
× ×Öž××¢× ×€×× ×××¢×š× (׀֌ך×֞ס×)
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×Öž× ××Öž× ×××€ÖŒ. 1 - ××¢×× ×€×× ×§×××¢× × ×Š× ×¡×¢×š××עך, 2 - ×¢× ×׀עך ×€×× ×¡×¢×š××עך ×Š× ×§×××¢× ×
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קס×× ×§×Ö·× ×€×××עך××ש×Ö·× ×עקע ×€ÖŒ×ַךסעך
×עך × ×֞ך××Ö·× ×€ÖŒ××××Öž× ××Öž××××¢ xml.dom ××× ××¢× ×׊×. עס ×××× × ×€ÖŒ×©××, ×Öž×עך ×עש×ַס ×××€ÖŒ××Ö·××¢× ×××ש×Ö·× ×¢×¡ ××× ××¢×××¢× ×Ö· ××××¢×š×§× ×€×¢×× ×€×× ×§××֞ך ××ַק××××¢× ×××ש×Ö·× ××× ×××ש׀××× ××××£ ×× × ×¢×¥ × ××Š× ××¢× ××Öž××××¢.
×××× = minidom.parse(gconfig["config_file"]) mconfig=tree.getElementsByTagName("mysql") ×€Ö¿×ַך ×¢××¢× ××× mconfig: gconfig["mysql_host"]=elem.getElementsByTagName("host")[0].×€×ךס×ק×× ×. gconfig["mysql_username"]=elem.getElementsByTagName("××Ö·× ×׊עך × ×Öž××¢×")[0].firstChild.data gconfig["mysql_password"]=elem.getElementsByTagName("password")[0].firstChild.data gconfig["mysql_password" =elem.getElementsByTagName("××Ö·×¡×¢× ×Ö·××¢")[0].firstChild.data dconfig=tree.getElementsByTagName("dhcpserver") ×€Ö¿×ַך ×¢××¢× ××× dconfig: gconfig["×ך×Öž×ק×ַס×"]=×¢××¢×.××¢××¢××¢××¢× ×ס××××Ö·×× ×Ö·××¢("×ך×Öž×ק×ַס×")[0]. firstChild.data gconfig["dhcp_host"]=elem.getElementsByTagName("host")[0].firstChild.data gconfig["dhcp_LeaseTime"]=elem.getElementsByTagName("LeaseTime")[0].firstChild.data gconfig[" dhcp_ThreadLimit"]=int(elem.getElementsByTagName("ThreadLimit")[0].firstChild.data) gconfig["dhcp_Server"]=elem.getElementsByTagName("DHCPServer")[0].firstChild.data gconfig"["dhMacp_Server"] =elem.getElementsByTagName("defaultMask")[0].firstChild.data gconfig["dhcp_defaultRouter"]=elem.getElementsByTagName("defaultRouter")[0].firstChild.data gconfig["dhcp_defaultDgetElement"](elem.getElementsByTagName("defaultRouter") defaultDNS")[0].firstChild.data qconfig=tree.getElementsByTagName("×Öž× ×€Ö¿×š×¢×") ×€Ö¿×ַך ×¢××¢× ××× qconfig: gconfig["offer_count"]=elem.getElementsByTagName("offer_count")[0].firstChild.data ×€Ö¿×ַך × ××עך ××× ×§×××(×× ×(×ק×Öž× ×€××["×֞׀׀עך_ק×Öž×× ×"])): ×ק×Öž× ×€××["×֞׀׀עך_"+ס×ך(× ××+1)]=×¢××¢×.××¢××¢××¢××¢× ×¥ ×××××Ö·×× ×Ö·××¢("×֞׀׀עך_"+ס×ך(× ××+1))[0].×€×ךס×ק××××.××Ö·××Ö· ×ק×Öž× ×€×× ["history_sql"]=elem.getElementsByTagName("history_sql")[0].firstChild.data options=tree.getElementsByTagName("×֞׀֌׊×עס") ×€Ö¿×ַך ×¢××¢× ××× ×֞׀֌׊×עס: node=elem.getElementsByTagName("×֞׀֌׊××¢") ×€Ö¿×ַך ×֞׀֌׊×עס ××× × ×Öž××¢ : optionsMod.append(options.firstChild.data)
×××××××ךע×Ö·××× ×
×Ö·××× ××¢× ××, ×××××××ךע×Ö·××× × ××× ×€ÖŒ××××Öž× ××× ×××€ÖŒ××Ö·××¢× ×Ö·× ×××עך ק××ך ××× ×€×©××.
def PacketWork(data,addr): ... # ×××€ÖŒ××Ö·××¢× ×××ש×Ö·× ×€×× ×€ÖŒ×ַךס×× × ×× ×× ×§×Ö·××× × ×€ÖŒ×ַק×Ö·× ××× ×š×ס׀֌×Ö·× × ×Š× ×¢×¡ ... ×שעת ××ת: ××Ö·××, adr = udp_socket.recvfrom(1024) # ×××ך×× ×€Ö¿×ַך ×× UDP ×€ÖŒ×ַק×Ö·× ×€×Öž××¢× = threading.thread( target=PacketWork, args=(data,addr,)).start() # ××× ×¢×¡ ×עק×××¢× - ××ך ק×Ö·×עך ×× ×€×š×עך ×××€××× × ×€ÖŒ×ַקקע××××֞ךק ×€Ö¿×× ×§×Š××¢ ××× ×עך ××× ×עך×ך×× × ××× ×€ÖŒ×ַך×Ö·××¢×עךס ×שעת ×ךע××× ×.×ַק×××××¢_ק×Öž×× × () >gconfig["dhcp_ThreadLimit"]: ׊×××. ש××Öž×€×(1) # ×××× ×× × ××עך עס ××¢× ×¢× ×©××× ×€×××¡× ××ק ×עך ×€Ö¿×¢××¢× ××× ××× ×× ×¡×¢×××× ×ס, ××ך ×××ַך×× ××× ×¢×¡ ××¢× ×¢× ××××× ×קעךע ×€×× ââââ×××
××ַק×××¢× / ש××§× DHCP ×€ÖŒ×ַק×Ö·×
××× ×¡×ך ×Š× ×× ××¢×š×¡×¢×€ÖŒ× ×××€ÖŒ ×€ÖŒ×ַק××¥ ×××֞ס ק×××¢× ×××š× ×× × ×¢×¥ ק×֞ך×, ××ך ××Ö·×š×€Ö¿× ×Š× "×××××" ×× ××Öž××¢×:
udp_socket = socket.socket(socket.AF_INET,socket.SOCK_DGRAM,socket.IPPROTO_UDP) udp_socket.bind((gconfig["dhcp_host"],67))
, ××× ×× ×€××Ö·×ס ××¢× ×¢×:
- AF_INET - ×××× ×Ö·× ×× ×Ö·×ךעס ×€Ö¿×֞ך××Ö·× ×××¢× ×××× IP: ×€ÖŒ×֞ך×. עס ×§×¢× ×××× ×××× AF_UNIX - ××× ×× ×Ö·×ךעס ××× ××¢××¢×× ×××š× ×× ×עקע × ×Öž××¢×.
- SOCK_DGRAM - ×××× ×Ö·× ××ך ××Öž× × ×× ×Öž× × ×¢××¢× ×Ö· "ך×× ×€ÖŒ×ַק×Ö·×", ×Öž×עך ×××× ×¢×š ×××֞ס ××× ×©××× ××ך×××¢××× ××¢× ×××š× ×× ×€××ך×××Ö·× ××× ××× ×Ö· ×××× ×ך××××¢× ×€ÖŒ×ַק×Ö·×. ××¢× ×¢. ××ך ××ַק×××¢× ××××× ×Ö· UDP ×€ÖŒ×ַק×Ö·× ×Öž× ×× "×ש×××ת" ק×Öž××€ÖŒ×Öž× ×¢× × ×€×× ×× UDP ×€ÖŒ×ַק×Ö·× ×š×ַ׀֌עך. ×××× ××ך × ××Š× ×× SOCK_RAW ×€×Öž×, ××ך ×××¢× ×××× ××Ö·×š×€Ö¿× ×Š× ×€ÖŒ×ַךס××š× ××¢× "ך×ַ׀֌עך".
ש××§× ×Ö· ×€ÖŒ×ַק×Ö·× ×§×¢× ×¢× ×××× ××× ×Ö· ×ך×Öž×ק×ַס×:
udp_socket.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1) #××ַש××××¢× ×× ××Öž××¢× ×Š× ×ך×Öž×ק×Ö·×¡× ××Öž××¢ rz=udp_socket.sendto(packetack, (gconfig["×ך×Öž×Ö·×ק×ַס×"],68))
, ××× ×Š× ×× ×Ö·×ךעס "×€×× ××× ×× ×€ÖŒ×¢×§× ×עק×××¢× ×€××":
udp_socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1) # ××ַש××××¢× ×× ××Öž××¢× ×Š× ×××××-×××¡× ×¢×š ××Öž××¢ rz=udp_socket.sendto(packetack, addr)
, ××× SOL_SOCKET ×××× ×× "׀֌ך×Öž××֞ק×Öž× ××ך××" ×€Ö¿×ַך ××ַש××¢×××§× ×֞׀֌׊×עס,
, SO_BROADCAST ×֞׀֌׊××¢ ×Ö·× ×עך ××¢×× ×€ÖŒ×¢×§× ××× "×ך×Öž×Ö·×ק×ַס×"
,SO_REUSEADDR ×֞׀֌׊××¢ ס××××ש×× ×× ××Öž××¢× ×Š× "×€×××¢ ׊××עךעךס" ××Öž××¢. ××× ××¢×֞ך××¢, עס ××× ××× ××××ק ××× ××¢× ×€×Ö·×, ×Öž×עך ××××£ ×××× ×¢×š ×€×× ×× FreeBSD סעך××עךס ××××£ ×××֞ס ××× ×עס××¢×, ×× ×§×Öž× ××× × ××©× ×ַך××¢×× ×Öž× ××¢× ×֞׀֌׊××¢.
×€ÖŒ×ַךס×× × ×Ö· DHCP ×€ÖŒ×ַק×Ö·×
××֞ס ××× ××× ××× ××ַקע ××××§× ×€ÖŒ××××Öž×. עס ×××š× ×¡ ×××ס ×Ö·× ×××ס ×€×× ×× ×§×¢×¡×× ×¢×¡ ×Ö·××Ö·×× ××ך ×Š× ×××× ××Ö·× ×¥ ×€×עקס×Ö·××Ö·× ××× ×× ×××עק×Öž××¢. ×Ö·××Ö·××× × ×¢×¡ ×Š× ×××× ×××עך ××××× ×××עך××¢××¢×Š× ××× ×ע׊×××Ö·× ×××Ö·××עס, ס×ך×× ×ס ××× ×עקס - ×.×. ××֞ס ××× ×××֞ס ××ך ××ַקע ××Ö·×š×€Ö¿× ×Š× ×€Ö¿×ַךש×××× ×× ×¡×ך×ק××ך ×€×× ××¢× ×€ÖŒ×¢×§×. ×Ö·×××, ×€Ö¿×ַך ×××ַש׀֌××, ××ך ×§×¢× ×¢× ××ַק×××¢× ×Ö· ק××× ×€×× ×××עס ××× ×עקס ××× × ×֞ך ×××עס:
ךעס["קס×××עקס"]=××Ö·××Ö·[4:8].×עקס() ךעס["קס××××××¢"]=××Ö·××Ö·[4:8]
, ×€ÖŒ×Ö·×§× ×× ×××עס ××× ×Ö· ס×ך×ק××ך:
res["×€××Ö·×ס"]=×€ÖŒ×ַק('BB',data[10],data[11])
××ַק×××¢× IP ×€Ö¿×× ×¡×ך×ק××ך:
ךעס ["ס××Ö·××ך"] = socket.inet_ntoa (×€ÖŒ×ַק ('BBBB', ××Ö·×× [12], ××Ö·×× [13], ××Ö·×× [14], ××Ö·×× [15]));
××× ×€Ö¿×ַךקעך×:
res=res+socket.inet_pton(socket.AF_INET, gconfig["dhcp_Server"])
×Ö·× ×¡ ×Ö·××¢ ×€Ö¿×ַך ×××Š× ð
×ק×ך: www.habr.com