diff options
Diffstat (limited to 'cddl/contrib/dtracetoolkit/Net/tcpsnoop.d')
| -rwxr-xr-x | cddl/contrib/dtracetoolkit/Net/tcpsnoop.d | 424 |
1 files changed, 424 insertions, 0 deletions
diff --git a/cddl/contrib/dtracetoolkit/Net/tcpsnoop.d b/cddl/contrib/dtracetoolkit/Net/tcpsnoop.d new file mode 100755 index 0000000..ca01864 --- /dev/null +++ b/cddl/contrib/dtracetoolkit/Net/tcpsnoop.d @@ -0,0 +1,424 @@ +#!/usr/sbin/dtrace -Cs +/* + * tcpsnoop.d - snoop TCP network packets by process. + * Written using DTrace (Solaris 10 3/05) + * + * This analyses TCP network packets and prints the responsible PID and UID, + * plus standard details such as IP address and port. This captures traffic + * of newly created TCP connections that were established while this program + * was running. It can help identify which processes is causing TCP traffic. + * + * WARNING: This script may only work on Solaris 10 3/05, since it uses the + * fbt provider to trace the raw operation of a specific version of the kernel. + * In the future, a 'stable' network provider should exist which will allow + * this to be written for that and subsequent versions of the kernel. In the + * meantime, check for other versions of this script in the /Net directory, + * and read the Notes/ALLfbt_notes.txt for more background on fbt. + * + * $Id: tcpsnoop.d 69 2007-10-04 13:40:00Z brendan $ + * + * USAGE: tcpsnoop.d + * + * FIELDS: + * UID user ID + * PID process ID + * CMD command + * LADDR local IP address + * RADDR remote IP address + * LPORT local port number + * RPORT remote port number + * DR direction + * SIZE packet size, bytes + * + * SEE ALSO: snoop -rS + * + * COPYRIGHT: Copyright (c) 2005, 2006 Brendan Gregg. + * + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at Docs/cddl1.txt + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * CDDL HEADER END + * + * Author: Brendan Gregg [Sydney, Australia] + * + * TODO: IPv6 + * + * 09-Jul-2004 Brendan Gregg Created this. + * 12-Mar-2005 " " Changed probes, size info now printed. + * 02-Jul-2005 " " Many more probes. Renamed "tcpsnoop.d". + * 03-Dec-2005 " " Fixed tcp_accept_finish bug, now 100% correct + * execname. Thanks Kias Belgaied for expertise. + * 20-Apr-2006 " " Fixed SS_TCP_FAST_ACCEPT bug in build 31+. + * 20-Apr-2006 " " Last update. + */ + +#pragma D option quiet +#pragma D option switchrate=10hz + +#include <sys/file.h> +#include <inet/common.h> +#include <sys/byteorder.h> + +/* + * Print header + */ +dtrace:::BEGIN +{ + /* print main headers */ + printf("%5s %6s %-15s %5s %2s %-15s %5s %5s %s\n", + "UID", "PID", "LADDR", "LPORT", "DR", "RADDR", "RPORT", + "SIZE", "CMD"); +} + +/* + * TCP Process inbound connections + * + * 0x00200000 has been hardcoded. It was SS_TCP_FAST_ACCEPT, but was + * renamed to SS_DIRECT around build 31. + */ +fbt:sockfs:sotpi_accept:entry +/(arg1 & FREAD) && (arg1 & FWRITE) && (args[0]->so_state & 0x00200000)/ +{ + self->sop = args[0]; +} + +fbt:sockfs:sotpi_create:return +/self->sop/ +{ + self->nsop = (struct sonode *)arg1; +} + +fbt:sockfs:sotpi_accept:return +/self->nsop/ +{ + this->tcpp = (tcp_t *)self->nsop->so_priv; + self->connp = (conn_t *)this->tcpp->tcp_connp; + tname[(int)self->connp] = execname; + tpid[(int)self->connp] = pid; + tuid[(int)self->connp] = uid; +} + +fbt:sockfs:sotpi_accept:return +{ + self->nsop = 0; + self->sop = 0; +} + +/* + * TCP Process outbound connections + */ +fbt:ip:tcp_connect:entry +{ + this->tcpp = (tcp_t *)arg0; + self->connp = (conn_t *)this->tcpp->tcp_connp; + tname[(int)self->connp] = execname; + tpid[(int)self->connp] = pid; + tuid[(int)self->connp] = uid; +} + +/* + * TCP Data translations + */ +fbt:sockfs:sotpi_accept:return, +fbt:ip:tcp_connect:return +/self->connp/ +{ + /* fetch ports */ +#if defined(_BIG_ENDIAN) + self->lport = self->connp->u_port.tcpu_ports.tcpu_lport; + self->fport = self->connp->u_port.tcpu_ports.tcpu_fport; +#else + self->lport = BSWAP_16(self->connp->u_port.tcpu_ports.tcpu_lport); + self->fport = BSWAP_16(self->connp->u_port.tcpu_ports.tcpu_fport); +#endif + + /* fetch IPv4 addresses */ + this->fad12 = + (int)self->connp->connua_v6addr.connua_faddr._S6_un._S6_u8[12]; + this->fad13 = + (int)self->connp->connua_v6addr.connua_faddr._S6_un._S6_u8[13]; + this->fad14 = + (int)self->connp->connua_v6addr.connua_faddr._S6_un._S6_u8[14]; + this->fad15 = + (int)self->connp->connua_v6addr.connua_faddr._S6_un._S6_u8[15]; + this->lad12 = + (int)self->connp->connua_v6addr.connua_laddr._S6_un._S6_u8[12]; + this->lad13 = + (int)self->connp->connua_v6addr.connua_laddr._S6_un._S6_u8[13]; + this->lad14 = + (int)self->connp->connua_v6addr.connua_laddr._S6_un._S6_u8[14]; + this->lad15 = + (int)self->connp->connua_v6addr.connua_laddr._S6_un._S6_u8[15]; + + /* convert type for use with lltostr() */ + this->fad12 = this->fad12 < 0 ? 256 + this->fad12 : this->fad12; + this->fad13 = this->fad13 < 0 ? 256 + this->fad13 : this->fad13; + this->fad14 = this->fad14 < 0 ? 256 + this->fad14 : this->fad14; + this->fad15 = this->fad15 < 0 ? 256 + this->fad15 : this->fad15; + this->lad12 = this->lad12 < 0 ? 256 + this->lad12 : this->lad12; + this->lad13 = this->lad13 < 0 ? 256 + this->lad13 : this->lad13; + this->lad14 = this->lad14 < 0 ? 256 + this->lad14 : this->lad14; + this->lad15 = this->lad15 < 0 ? 256 + this->lad15 : this->lad15; + + /* stringify addresses */ + self->faddr = strjoin(lltostr(this->fad12), "."); + self->faddr = strjoin(self->faddr, strjoin(lltostr(this->fad13), ".")); + self->faddr = strjoin(self->faddr, strjoin(lltostr(this->fad14), ".")); + self->faddr = strjoin(self->faddr, lltostr(this->fad15 + 0)); + self->laddr = strjoin(lltostr(this->lad12), "."); + self->laddr = strjoin(self->laddr, strjoin(lltostr(this->lad13), ".")); + self->laddr = strjoin(self->laddr, strjoin(lltostr(this->lad14), ".")); + self->laddr = strjoin(self->laddr, lltostr(this->lad15 + 0)); + + /* fix direction and save values */ + tladdr[(int)self->connp] = self->laddr; + tfaddr[(int)self->connp] = self->faddr; + tlport[(int)self->connp] = self->lport; + tfport[(int)self->connp] = self->fport; + + /* all systems go */ + tok[(int)self->connp] = 1; +} + +/* + * TCP Clear connp + */ +fbt:ip:tcp_get_conn:return +{ + /* Q_TO_CONN */ + this->connp = (conn_t *)arg1; + tok[(int)this->connp] = 0; + tpid[(int)this->connp] = 0; + tuid[(int)this->connp] = 0; + tname[(int)this->connp] = 0; +} + +/* + * TCP Process "port closed" + */ +fbt:ip:tcp_xmit_early_reset:entry +{ + this->queuep = (queue_t *)`tcp_g_q; /* ` */ + this->connp = (conn_t *)this->queuep->q_ptr; + this->tcpp = (tcp_t *)this->connp->conn_tcp; + + /* split addresses */ + this->ipha = (ipha_t *)args[1]->b_rptr; + this->fad15 = (this->ipha->ipha_src & 0xff000000) >> 24; + this->fad14 = (this->ipha->ipha_src & 0x00ff0000) >> 16; + this->fad13 = (this->ipha->ipha_src & 0x0000ff00) >> 8; + this->fad12 = (this->ipha->ipha_src & 0x000000ff); + this->lad15 = (this->ipha->ipha_dst & 0xff000000) >> 24; + this->lad14 = (this->ipha->ipha_dst & 0x00ff0000) >> 16; + this->lad13 = (this->ipha->ipha_dst & 0x0000ff00) >> 8; + this->lad12 = (this->ipha->ipha_dst & 0x000000ff); + + /* stringify addresses */ + self->faddr = strjoin(lltostr(this->fad12), "."); + self->faddr = strjoin(self->faddr, strjoin(lltostr(this->fad13), ".")); + self->faddr = strjoin(self->faddr, strjoin(lltostr(this->fad14), ".")); + self->faddr = strjoin(self->faddr, lltostr(this->fad15 + 0)); + self->laddr = strjoin(lltostr(this->lad12), "."); + self->laddr = strjoin(self->laddr, strjoin(lltostr(this->lad13), ".")); + self->laddr = strjoin(self->laddr, strjoin(lltostr(this->lad14), ".")); + self->laddr = strjoin(self->laddr, lltostr(this->lad15 + 0)); + + self->reset = 1; +} + +/* + * TCP Fetch "port closed" ports + */ +fbt:ip:tcp_xchg:entry +/self->reset/ +{ +#if defined(_BIG_ENDIAN) + self->lport = (uint16_t)arg0; + self->fport = (uint16_t)arg1; +#else + self->lport = BSWAP_16((uint16_t)arg0); + self->fport = BSWAP_16((uint16_t)arg1); +#endif + self->lport = BE16_TO_U16(arg0); + self->fport = BE16_TO_U16(arg1); +} + +/* + * TCP Print "port closed" + */ +fbt:ip:tcp_xmit_early_reset:return +{ + self->name = "<closed>"; + self->pid = 0; + self->uid = 0; + self->size = 54; /* should check trailers */ + self->dir = "<-"; + printf("%5d %6d %-15s %5d %2s %-15s %5d %5d %s\n", + self->uid, self->pid, self->laddr, self->lport, self->dir, + self->faddr, self->fport, self->size, self->name); + self->dir = "->"; + printf("%5d %6d %-15s %5d %2s %-15s %5d %5d %s\n", + self->uid, self->pid, self->laddr, self->lport, self->dir, + self->faddr, self->fport, self->size, self->name); + self->reset = 0; + self->size = 0; + self->name = 0; +} + +/* + * TCP Process Write + */ +fbt:ip:tcp_send_data:entry +{ + self->conn_p = (conn_t *)args[0]->tcp_connp; +} + +fbt:ip:tcp_send_data:entry +/tok[(int)self->conn_p]/ +{ + self->dir = "->"; + self->size = msgdsize(args[2]) + 14; /* should check trailers */ + self->uid = tuid[(int)self->conn_p]; + self->laddr = tladdr[(int)self->conn_p]; + self->faddr = tfaddr[(int)self->conn_p]; + self->lport = tlport[(int)self->conn_p]; + self->fport = tfport[(int)self->conn_p]; + self->ok = 2; + + /* follow inetd -> in.* transitions */ + self->name = pid && (tname[(int)self->conn_p] == "inetd") ? + execname : tname[(int)self->conn_p]; + self->pid = pid && (tname[(int)self->conn_p] == "inetd") ? + pid : tpid[(int)self->conn_p]; + tname[(int)self->conn_p] = self->name; + tpid[(int)self->conn_p] = self->pid; +} + +/* + * TCP Process Read + */ +fbt:ip:tcp_rput_data:entry +{ + self->conn_p = (conn_t *)arg0; + self->size = msgdsize(args[1]) + 14; /* should check trailers */ +} + +fbt:ip:tcp_rput_data:entry +/tok[(int)self->conn_p]/ +{ + self->dir = "<-"; + self->uid = tuid[(int)self->conn_p]; + self->laddr = tladdr[(int)self->conn_p]; + self->faddr = tfaddr[(int)self->conn_p]; + self->lport = tlport[(int)self->conn_p]; + self->fport = tfport[(int)self->conn_p]; + self->ok = 2; + + /* follow inetd -> in.* transitions */ + self->name = pid && (tname[(int)self->conn_p] == "inetd") ? + execname : tname[(int)self->conn_p]; + self->pid = pid && (tname[(int)self->conn_p] == "inetd") ? + pid : tpid[(int)self->conn_p]; + tname[(int)self->conn_p] = self->name; + tpid[(int)self->conn_p] = self->pid; +} + +/* + * TCP Complete printing outbound handshake + */ +fbt:ip:tcp_connect:return +/self->connp/ +{ + self->name = tname[(int)self->connp]; + self->pid = tpid[(int)self->connp]; + self->uid = tuid[(int)self->connp]; + self->size = 54; /* should check trailers */ + self->dir = "->"; + /* this packet occured before connp was fully established */ + printf("%5d %6d %-15s %5d %2s %-15s %5d %5d %s\n", + self->uid, self->pid, self->laddr, self->lport, self->dir, + self->faddr, self->fport, self->size, self->name); +} + +/* + * TCP Complete printing inbound handshake + */ +fbt:sockfs:sotpi_accept:return +/self->connp/ +{ + self->name = tname[(int)self->connp]; + self->pid = tpid[(int)self->connp]; + self->uid = tuid[(int)self->connp]; + self->size = 54; /* should check trailers */ + /* these packets occured before connp was fully established */ + self->dir = "<-"; + printf("%5d %6d %-15s %5d %2s %-15s %5d %5d %s\n", + self->uid, self->pid, self->laddr, self->lport, self->dir, + self->faddr, self->fport, self->size, self->name); + self->dir = "->"; + printf("%5d %6d %-15s %5d %2s %-15s %5d %5d %s\n", + self->uid, self->pid, self->laddr, self->lport, self->dir, + self->faddr, self->fport, self->size, self->name); + self->dir = "<-"; + printf("%5d %6d %-15s %5d %2s %-15s %5d %5d %s\n", + self->uid, self->pid, self->laddr, self->lport, self->dir, + self->faddr, self->fport, self->size, self->name); +} + +/* + * Print output + */ +fbt:ip:tcp_send_data:entry, +fbt:ip:tcp_rput_data:entry +/self->ok == 2/ +{ + /* print output line */ + printf("%5d %6d %-15s %5d %2s %-15s %5d %5d %s\n", + self->uid, self->pid, self->laddr, self->lport, self->dir, + self->faddr, self->fport, self->size, self->name); +} + +/* + * TCP Clear connect variables + */ +fbt:sockfs:sotpi_accept:return, +fbt:ip:tcp_connect:return +/self->connp/ +{ + self->faddr = 0; + self->laddr = 0; + self->fport = 0; + self->lport = 0; + self->connp = 0; + self->name = 0; + self->pid = 0; + self->uid = 0; +} + +/* + * TCP Clear r/w variables + */ +fbt:ip:tcp_send_data:entry, +fbt:ip:tcp_rput_data:entry +{ + self->ok = 0; + self->dir = 0; + self->uid = 0; + self->pid = 0; + self->size = 0; + self->name = 0; + self->lport = 0; + self->fport = 0; + self->laddr = 0; + self->faddr = 0; + self->conn_p = 0; +} |
