66 files changed, 0 insertions, 15542 deletions
diff --git a/src/pppoe-sniff.c b/src/pppoe-sniff.c deleted file mode 100755 index 1569857..0000000 --- a/src/pppoe-sniff.c +++ b/dev/null @@ -1,266 +0,0 @@ -/*********************************************************************** -* -* pppoe-sniff.c -* -* Sniff a network for likely-looking PPPoE frames and deduce the value -* to supply to PPPOE_EXTRA in /etc/ppp/pppoe.conf. USE AT YOUR OWN RISK. -* -* Copyright (C) 2000 by Roaring Penguin Software Inc. -* -* This program may be distributed according to the terms of the GNU -* General Public License, version 2 or (at your option) any later version. -* -* LIC: GPL -* -***********************************************************************/ - -static char const RCSID[] = -"$Id$"; - -#include "pppoe.h" - -#ifdef HAVE_GETOPT_H -#include <getopt.h> -#endif - -#include <errno.h> -#include <unistd.h> -#include <string.h> -#include <stdlib.h> - -#ifdef USE_DLPI -#include <sys/dlpi.h> -/* function declarations */ -void dlpromisconreq( int fd, u_long level); -void dlokack(int fd, char *bufp); -#endif - -/* Default interface if no -I option given */ -#define DEFAULT_IF "eth0" - -/* Global vars */ -int SeenPADR = 0; -int SeenSess = 0; -UINT16_t SessType, DiscType; - -char *IfName = NULL; /* Interface name */ -char *ServiceName = NULL; /* Service name */ - -/********************************************************************** -*%FUNCTION: parsePADRTags -*%ARGUMENTS: -* type -- tag type -* len -- tag length -* data -- tag data -* extra -- extra user data. -*%RETURNS: -* Nothing -*%DESCRIPTION: -* Picks interesting tags out of a PADR packet -***********************************************************************/ -void -parsePADRTags(UINT16_t type, UINT16_t len, unsigned char *data, - void *extra) -{ - switch(type) { - case TAG_SERVICE_NAME: - ServiceName = malloc(len+1); - if (ServiceName) { - memcpy(ServiceName, data, len); - ServiceName[len] = 0; - } - break; - } -} - -/********************************************************************** -*%FUNCTION: fatalSys -*%ARGUMENTS: -* str -- error message -*%RETURNS: -* Nothing -*%DESCRIPTION: -* Prints a message plus the errno value to stderr and exits. -***********************************************************************/ -void -fatalSys(char const *str) -{ - char buf[1024]; - sprintf(buf, "%.256s: %.256s", str, strerror(errno)); - printErr(buf); - exit(1); -} - -/********************************************************************** -*%FUNCTION: rp_fatal -*%ARGUMENTS: -* str -- error message -*%RETURNS: -* Nothing -*%DESCRIPTION: -* Prints a message to stderr and syslog and exits. -***********************************************************************/ -void -rp_fatal(char const *str) -{ - printErr(str); - exit(1); -} - -/********************************************************************** -*%FUNCTION: usage -*%ARGUMENTS: -* argv0 -- program name -*%RETURNS: -* Nothing -*%DESCRIPTION: -* Prints usage information and exits. -***********************************************************************/ -void -usage(char const *argv0) -{ - fprintf(stderr, "Usage: %s [options]\n", argv0); - fprintf(stderr, "Options:\n"); - fprintf(stderr, " -I if_name -- Specify interface (default %s.)\n", - DEFAULT_IF); - fprintf(stderr, " -V -- Print version and exit.\n"); - fprintf(stderr, "\nPPPoE Version %s, Copyright (C) 2000 Roaring Penguin Software Inc.\n", VERSION); - fprintf(stderr, "PPPoE comes with ABSOLUTELY NO WARRANTY.\n"); - fprintf(stderr, "This is free software, and you are welcome to redistribute it under the terms\n"); - fprintf(stderr, "of the GNU General Public License, version 2 or any later version.\n"); - fprintf(stderr, "http://www.roaringpenguin.com\n"); - exit(0); -} - -#if !defined(USE_LINUX_PACKET) && !defined(USE_DLPI) - -int -main() -{ - fprintf(stderr, "Sorry, pppoe-sniff works only on Linux.\n"); - return 1; -} - -#else - -/********************************************************************** -*%FUNCTION: main -*%ARGUMENTS: -* argc, argv -- count and values of command-line arguments -*%RETURNS: -* Nothing -*%DESCRIPTION: -* Main program -***********************************************************************/ -int -main(int argc, char *argv[]) -{ - int opt; - int sock; - PPPoEPacket pkt; - int size; -#ifdef USE_DLPI - long buf[MAXDLBUF]; -#endif - - if (getuid() != geteuid() || - getgid() != getegid()) { - fprintf(stderr, "SECURITY WARNING: pppoe-sniff will NOT run suid or sgid. Fix your installation.\n"); - exit(1); - } - - while((opt = getopt(argc, argv, "I:V")) != -1) { - switch(opt) { - case 'I': - SET_STRING(IfName, optarg); - break; - case 'V': - printf("pppoe-sniff: Roaring Penguin PPPoE Version %s\n", VERSION); - exit(0); - default: - usage(argv[0]); - } - } - - /* Pick a default interface name */ - if (!IfName) { - IfName = DEFAULT_IF; - } - - /* Open the interface */ -#ifdef USE_DLPI - sock = openInterface(IfName, Eth_PPPOE_Discovery, NULL); - dlpromisconreq(sock, DL_PROMISC_PHYS); - dlokack(sock, (char *)buf); - dlpromisconreq(sock, DL_PROMISC_SAP); - dlokack(sock, (char *)buf); -#else - - sock = openInterface(IfName, ETH_P_ALL, NULL); - -#endif - - /* We assume interface is in promiscuous mode -- use ifconfig to - ensure this */ - fprintf(stderr, "Sniffing for PADR. Start your connection on another machine...\n"); - while (!SeenPADR) { - if (receivePacket(sock, &pkt, &size) < 0) continue; - if (ntohs(pkt.length) + HDR_SIZE > (unsigned int)size) continue; - if (pkt.ver != 1 || pkt.type != 1) continue; - if (pkt.code != CODE_PADR) continue; - - /* Looks promising... parse it */ - if (parsePacket(&pkt, parsePADRTags, NULL) < 0) { - continue; - } - DiscType = ntohs(pkt.ethHdr.h_proto); - fprintf(stderr, "\nExcellent! Sniffed a likely-looking PADR.\n"); - break; - } - - while (!SeenSess) { - if (receivePacket(sock, &pkt, &size) < 0) continue; - if (ntohs(pkt.length) + HDR_SIZE > (unsigned int)size) continue; - if (pkt.ver != 1 || pkt.type != 1) continue; - if (pkt.code != CODE_SESS) continue; - - /* Cool! */ - SessType = ntohs(pkt.ethHdr.h_proto); - break; - } - - fprintf(stderr, "Wonderful! Sniffed a likely-looking session packet.\n"); - if ((ServiceName == NULL || *ServiceName == 0) && - DiscType == ETH_PPPOE_DISCOVERY && - SessType == ETH_PPPOE_SESSION) { - fprintf(stderr, "\nGreat! It looks like a standard PPPoE service.\nYou should not need anything special in the configuration file.\n"); - return 0; - } - - fprintf(stderr, "\nOK, looks like you need something special in the configuration file.\nTry this:\n\n"); - if (ServiceName != NULL && *ServiceName != 0) { - fprintf(stderr, "SERVICENAME='%s'\n", ServiceName); - } - if (DiscType != ETH_PPPOE_DISCOVERY || SessType != ETH_PPPOE_SESSION) { - fprintf(stderr, " PPPOE_EXTRA='-f %x:%x'\n", DiscType, SessType); - } - return 0; -} - -#endif -/********************************************************************** -*%FUNCTION: sysErr -*%ARGUMENTS: -* str -- error message -*%RETURNS: -* Nothing -*%DESCRIPTION: -* Prints a message plus the errno value to syslog. -***********************************************************************/ -void -sysErr(char const *str) -{ - char buf[1024]; - sprintf(buf, "%.256s: %.256s", str, strerror(errno)); - printErr(buf); -} |