diff options
| -rw-r--r-- | LICENSE | 340 | ||||
| -rw-r--r-- | README | 5 | ||||
| -rw-r--r-- | src/Makefile | 18 | ||||
| -rw-r--r-- | src/arp.c | 145 | ||||
| -rw-r--r-- | src/iface.c | 119 | ||||
| -rw-r--r-- | src/includes/arp.h | 27 | ||||
| -rw-r--r-- | src/includes/defs.h | 31 | ||||
| -rw-r--r-- | src/includes/iface.h | 39 | ||||
| -rw-r--r-- | src/includes/netdt.h | 27 | ||||
| -rw-r--r-- | src/includes/network.h | 27 | ||||
| -rw-r--r-- | src/includes/param.h | 33 | ||||
| -rw-r--r-- | src/netdt.c | 72 | ||||
| -rw-r--r-- | src/netdt.o | bin | 0 -> 1748 bytes | |||
| -rw-r--r-- | src/network.c | 42 | ||||
| -rw-r--r-- | src/param.c | 69 |
15 files changed, 994 insertions, 0 deletions
@@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + + 1. You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. 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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + <one line to give the program's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + <signature of Ty Coon>, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. @@ -0,0 +1,5 @@ +This is one of my first personal projects I've been working on. It is so old +that looking at the code gives me creeps :D. Back in the day (when I was +building a hacker personality :)) I was amazed by networking, so I wrote netdt +- a LAN scanner that uses ARP protocol to find which hosts are up. Code +compiles only on Linux and you will need root privileges to run it. diff --git a/src/Makefile b/src/Makefile new file mode 100644 index 0000000..23291a7 --- /dev/null +++ b/src/Makefile @@ -0,0 +1,18 @@ +CC=gcc +CFLAGS+=-O2 -Wall -s +OBJS=netdt.o arp.o iface.o param.o network.o + +all: $(OBJS) + $(CC) -I./includes $(CFLAGS) -o netdt $(OBJS) +netdt.o: netdt.c ./includes/netdt.h ./includes/defs.h + $(CC) -I./includes $(CFLAGS) -c -o netdt.o netdt.c +arp.o: arp.c ./includes/arp.h ./includes/defs.h + $(CC) -I./includes $(CFLAGS) -c -o arp.o arp.c +iface.o: iface.c ./includes/iface.h + $(CC) -I./includes $(CFLAGS) -c -o iface.o iface.c +param.o: param.c ./includes/param.h + $(CC) -I./includes $(CFLAGS) -c -o param.o param.c +network.o: network.c ./includes/network.h + $(CC) -I./includes $(CFLAGS) -c -o network.o network.c +clean: + rm -rf netdt $(OBJS) diff --git a/src/arp.c b/src/arp.c new file mode 100644 index 0000000..7ad7555 --- /dev/null +++ b/src/arp.c @@ -0,0 +1,145 @@ +/* + * The Network Discovery Tool. + * Copyright (C) 2005 Tadas Vilkeliskis aka vptr (vpointer@gmail.com) + * + * The Network Discovery Tool is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <netinet/ether.h> +#include <netinet/if_ether.h> +#include <netinet/in.h> +#include <sys/socket.h> +#include <arpa/inet.h> +#include <netpacket/packet.h> + +#include <unistd.h> +#include <fcntl.h> + +#include "netdt.h" +#include "defs.h" +#include "param.h" +#include "iface.h" +#include "network.h" + +void arp_generate_packet(struct in_addr, struct in_addr, struct ether_addr, u_int8_t *); + +int arp_init(int argc, char **argv) +{ + PDEBUG("arp_init called\n"); + + extern struct param param; + struct in_addr sip, tip, netmask, tmp; + int sock_fd; + struct sockaddr_ll saddr_ll; + socklen_t sa_size = sizeof(struct sockaddr_ll); + struct ether_addr mac; + struct ether_arp *arp_header; + u_int8_t packet[sizeof(struct ether_header) + sizeof(struct ether_arp)]; + //printf("%d\n", sizeof(packet)); exit(0); + + /* ETH_ALEN, ARPHDR_ETHER, ETHERTYPE_ARP */ + + if ( (sock_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ARP))) == -1) { + PDEBUG("ERROR: socket() failed\n"); + fprintf(stderr, "Error: can't create socket\n"); + exit(1); + } + if (fcntl(sock_fd, F_SETFL, O_NONBLOCK) == -1) { + PDEBUG("ERROR: fcntl() failed\n"); + fprintf(stderr, "Error: can't make socket non-blocking\n"); + close(sock_fd); + exit(1); + } + + iface_init(sock_fd, param.iface); + + if ( (saddr_ll.sll_ifindex = iface_get_index()) == -1) { + fprintf(stderr, "Error: no such device %s\n", param.iface); + close(sock_fd); + exit(1); + } + + /* + XXX + po situ veiksmu reiketu atlikti + patikrinima ar yra teisingas IP adresas + */ + iface_get_ip(&sip); + iface_get_netmask(&netmask); + iface_get_mac(&mac); + + saddr_ll.sll_family = PF_PACKET; + saddr_ll.sll_halen = ETH_ALEN; + memset(&saddr_ll.sll_addr, 0, ETH_ALEN); + + net_calc_network(sip, netmask); + tip.s_addr = sip.s_addr & netmask.s_addr; + arp_header = (struct ether_arp*)(packet + sizeof(struct ether_header)); + + fprintf(stdout, "Discovering network with %s/%s\n\n", inet_ntoa(sip), ether_ntoa(&mac)); + + while ( (tip.s_addr = net_next_ip(tip)) != 0) { + //printf("%s\n", inet_ntoa(tip)); + memset(packet, 0, sizeof(packet)); + arp_generate_packet(sip, tip, mac, packet); + sendto(sock_fd, &packet, 42, 0, (struct sockaddr*)&saddr_ll, sizeof(struct sockaddr_ll)); + usleep(param.packet_delay * 100); + if (recvfrom(sock_fd, &packet, 42, 0, (struct sockaddr*)&saddr_ll, &sa_size) == 42) { + if (arp_header->arp_op == htons(ARPOP_REPLY)) { + memcpy((void*)&tmp, (void*)&arp_header->arp_spa, 4); + fprintf(stdout, "%-15s %s\n", inet_ntoa(tmp), + ether_ntoa((struct ether_addr*)&arp_header->arp_sha)); + } + } + } + return (0); +} + +void arp_generate_packet(struct in_addr sip, struct in_addr tip, struct ether_addr smac, u_int8_t *packet) +{ + struct ether_header *eth_header; + struct ether_arp *arp_header; + + eth_header = (struct ether_header*)packet; + memset((void*)ð_header->ether_dhost, 0xff, ETH_ALEN); /* broadcast */ + memcpy((void*)ð_header->ether_shost, (void*)&smac.ether_addr_octet, ETH_ALEN); + eth_header->ether_type = htons(ETHERTYPE_ARP); + + arp_header = (struct ether_arp*)(packet + sizeof(struct ether_header)); + arp_header->arp_hrd = htons(ARPHRD_ETHER); + arp_header->arp_pro = htons(ETHERTYPE_IP); + arp_header->arp_hln = ETH_ALEN; + arp_header->arp_pln = 4; /* reikia susiziureti ar nera kokios konstantos */ + arp_header->arp_op = htons(ARPOP_REQUEST); + memcpy((void*)arp_header->arp_sha, (void*)&smac.ether_addr_octet, ETH_ALEN); + memcpy((void*)arp_header->arp_spa, (void*)&sip.s_addr, 4); + memcpy((void*)arp_header->arp_tpa, (void*)&tip.s_addr, 4); +} + +void arp_usage(char *pname) +{ + fprintf(stderr, "The Network Discovery Tool " PROGRAM_VERSION " by " PROGRAM_AUTHOR "\n" + "Usage: %s arp <options>\n" + "Options:\n" + " -i <if> Network interface\n" + " -t <time> Delay between packets\n" + " -h Help screen\n" + , pname); + exit(0); +} diff --git a/src/iface.c b/src/iface.c new file mode 100644 index 0000000..8c67218 --- /dev/null +++ b/src/iface.c @@ -0,0 +1,119 @@ +/* + * The Network Discovery Tool + * Copyright (C) 2005 Tadas Vilkeliskis aka vptr (vpointer@gmail.com) + * + * The Ultimate Network Tool is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#include <stdio.h> +#include <sys/ioctl.h> +#include <net/if.h> +#include <netinet/in.h> +#include <string.h> +#include <netinet/ether.h> +#include "iface.h" +#include "defs.h" + +struct ifreq iface; + +struct interface +{ + int index, + mtu, + metric; + short flags; + struct in_addr ip, netmask, broadcast; + struct ether_addr mac; + +} interface; + +void iface_init(int socket, char *name) +{ + PDEBUG("iface_init() called\n"); + memset(&iface, 0, sizeof(struct ifreq)); + strncpy(iface.ifr_name, name, strlen(name)); + + if (ioctl(socket, SIOCGIFINDEX, &iface) == -1) + interface.index = -1; + else { + interface.index = iface.ifr_ifindex; + + if (ioctl(socket, SIOCGIFADDR, &iface) != -1) + //memcpy(&iface_ip, &(((struct sockaddr_in * )&iface.ifr_addr)->sin_addr), 4); + interface.ip = ((struct sockaddr_in * )&iface.ifr_addr)->sin_addr; + + if (ioctl(socket, SIOCGIFNETMASK, &iface) != -1) + //memcpy(&iface_nmask, &(((struct sockaddr_in * )&iface.ifr_netmask)->sin_addr), 4); + interface.netmask = ((struct sockaddr_in * )&iface.ifr_netmask)->sin_addr; + + if (ioctl(socket, SIOCGIFBRDADDR, &iface) != -1) + //memcpy(&iface_bcast, &(((struct sockaddr_in * )&iface.ifr_broadaddr)->sin_addr), 4); + interface.broadcast = ((struct sockaddr_in * )&iface.ifr_broadaddr)->sin_addr; + + if (ioctl(socket, SIOCGIFHWADDR, &iface) != -1) + memcpy((void*)interface.mac.ether_addr_octet, (void*)&iface.ifr_hwaddr.sa_data, 6); + + if (ioctl(socket, SIOCGIFMTU, &iface) != -1) + interface.mtu = iface.ifr_mtu; + + if (ioctl(socket, SIOCGIFFLAGS, &iface) != -1) + interface.flags = iface.ifr_flags; + + if (ioctl(socket, SIOCGIFMETRIC, &iface) != -1) + interface.metric = iface.ifr_metric; + } + PDEBUG("iface_init() ended\n"); +} + +int inline iface_get_index() +{ + return (interface.index); +} + +int inline iface_get_mtu() +{ + return (interface.mtu); +} + +int inline iface_get_metric() +{ + return (interface.metric); +} + +short inline iface_get_flags() +{ + return (interface.flags); +} + +void inline iface_get_ip(struct in_addr *ip) +{ + (*ip) = interface.ip; +} + +void inline iface_get_netmask(struct in_addr *netmask) +{ + (*netmask) = interface.netmask; +} + +void inline iface_get_broadcast(struct in_addr *broadcast) +{ + (*broadcast) = interface.broadcast; +} + +void inline iface_get_mac(struct ether_addr *mac) +{ + (*mac) = interface.mac; +} diff --git a/src/includes/arp.h b/src/includes/arp.h new file mode 100644 index 0000000..d012894 --- /dev/null +++ b/src/includes/arp.h @@ -0,0 +1,27 @@ +/* + * The Network Discovery Tool. + * Copyright (C) 2005 Tadas Vilkeliskis aka vptr (vpointer@gmail.com) + * + * The Network Discovery Tool is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#ifndef __NETDT_ARP_H__ +#define __NETDT_ARP_H__ 1 + +int arp_init(int, char **); +void arp_usage(char *); + +#endif diff --git a/src/includes/defs.h b/src/includes/defs.h new file mode 100644 index 0000000..ac8a07c --- /dev/null +++ b/src/includes/defs.h @@ -0,0 +1,31 @@ +/* + * The Network Discovery Tool. + * Copyright (C) 2005 Tadas Vilkeliskis aka vptr (vpointer@gmail.com) + * + * The Network Discovery Tool is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#ifndef __NETDT_DEFS_H__ +#define __NETDT_DEFS_H__ 1 + +#undef PDEBUG +#ifdef DEBUG +#define PDEBUG(format, args...) fprintf(stderr, "DEBUG:%s:%d " format, __FILE__, __LINE__, ## args) +#else +#define PDEBUG(format, args...) +#endif + +#endif diff --git a/src/includes/iface.h b/src/includes/iface.h new file mode 100644 index 0000000..da2f86a --- /dev/null +++ b/src/includes/iface.h @@ -0,0 +1,39 @@ +/* + * The Network Discovery Tool + * Copyright (C) 2005 Virtual Pointer + * + * The Ultimate Network Tool is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#ifndef __NETDT_IFACE_H__ +#define __NETDT_IFACE_H__ 1 + +/* + * /usr/include/bits/ioctls.h + */ + +/* Initialize global interface variables, call first */ +void iface_init(int, char *); +int inline iface_get_index(); +int inline iface_get_mtu(); +int inline iface_get_metric(); +short inline iface_get_flags(); +void inline iface_get_ip(struct in_addr *); +void inline iface_get_netmask(struct in_addr *); +void inline iface_get_broadcast(struct in_addr *); +void inline iface_get_mac(struct ether_addr *); + +#endif diff --git a/src/includes/netdt.h b/src/includes/netdt.h new file mode 100644 index 0000000..3763d37 --- /dev/null +++ b/src/includes/netdt.h @@ -0,0 +1,27 @@ +/* + * The Network Discovery Tool. + * Copyright (C) 2005 Tadas Vilkeliskis aka vptr (vpointer@gmail.com) + * + * The Network Discovery Tool is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#ifndef __NETDT_H__ +#define __NETDT_H__ 1 + +#define PROGRAM_VERSION "0.0.1" +#define PROGRAM_AUTHOR "Tadas Vilkeliskis" + +#endif diff --git a/src/includes/network.h b/src/includes/network.h new file mode 100644 index 0000000..0b6a984 --- /dev/null +++ b/src/includes/network.h @@ -0,0 +1,27 @@ +/* + * The Network Discovery Tool. + * Copyright (C) 2005 Tadas Vilkeliskis aka vptr (vpointer@gmail.com) + * + * The Network Discovery Tool is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#ifndef __NETDT_NETWORK_H__ +#define __NETDT_NETWORK_H__ 1 + +void inline net_calc_network(struct in_addr, struct in_addr); +in_addr_t net_next_ip(struct in_addr); + +#endif diff --git a/src/includes/param.h b/src/includes/param.h new file mode 100644 index 0000000..bf5789d --- /dev/null +++ b/src/includes/param.h @@ -0,0 +1,33 @@ +/* + * The Network Discovery Tool. + * Copyright (C) 2005 Tadas Vilkeliskis aka vptr (vpointer@gmail.com) + * + * The Network Discovery Tool is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#ifndef __NETDT_PARAM_H__ +#define __NETDT_PARAM_H__ 1 + +struct param +{ + char *iface; + int flags; + unsigned long packet_delay; +}; + +int get_opt(int, char **); + +#endif diff --git a/src/netdt.c b/src/netdt.c new file mode 100644 index 0000000..968b303 --- /dev/null +++ b/src/netdt.c @@ -0,0 +1,72 @@ +/* + * The Network Discovery Tool. + * Copyright (C) 2005 Tadas Vilkeliskis aka vptr (vpointer@gmail.com) + * + * The Network Discovery Tool is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <signal.h> +#include <string.h> +#include "defs.h" +#include "param.h" +#include "netdt.h" +#include "arp.h" + +void usage(char *); +void sigh(int); + +int main(int argc, char **argv) +{ + extern struct param param; +#ifdef DEBUG + int i; + for (i = 0; i < argc; i++) + PDEBUG("Command line argv[%d] = %s\n", i, argv[i]); +#endif + if (argc < 2) usage(argv[0]); + + signal(SIGQUIT, sigh); + signal(SIGTERM, sigh); + signal(SIGINT, sigh); + + if (get_opt(argc, argv) == -1) usage(argv[0]); + //PDEBUG("%s", param.iface); + if (strncmp(argv[1], "arp", 3) == 0) { + if ((param.flags & 0xFFFFFFFF) == 0xFFFFFFFF) arp_usage(argv[0]); + return (arp_init(argc, argv)); + } else usage(argv[0]); + + return (0); +} + +void usage(char *pname) +{ + fprintf(stderr, "The Network Discovery Tool " PROGRAM_VERSION " by " PROGRAM_AUTHOR "\n" + "Usage: %s <type> <options>\n" + "Types:\n" + " arp Network discovery using ARP\n" + "Options:\n" + " -h Help screen\n" + , pname); + exit(0); +} + +void sigh(int type) +{ + exit(1); +} diff --git a/src/netdt.o b/src/netdt.o Binary files differnew file mode 100644 index 0000000..1c5bcab --- /dev/null +++ b/src/netdt.o diff --git a/src/network.c b/src/network.c new file mode 100644 index 0000000..5f0bf42 --- /dev/null +++ b/src/network.c @@ -0,0 +1,42 @@ +/* + * The Network Discovery Tool. + * Copyright (C) 2005 Tadas Vilkeliskis aka vptr (vpointer@gmail.com) + * + * The Network Discovery Tool is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#include <netinet/in.h> + +struct network +{ + unsigned long start, end; +} network; + +void inline net_calc_network(struct in_addr ip, struct in_addr netmask) +{ + network.start = ip.s_addr & netmask.s_addr; /* sitas isvis niekam nereikalingas, reikia sugalvoti kur i kisti */ + network.end = ip.s_addr | (~netmask.s_addr); +} + +in_addr_t net_next_ip(struct in_addr curr_ip) +{ + unsigned long curr; + curr = ntohl(curr_ip.s_addr); + if (curr + 1 <= ntohl(network.end)) { + curr++; + return (htonl(curr)); + } else return (0); +} diff --git a/src/param.c b/src/param.c new file mode 100644 index 0000000..3c7f5fb --- /dev/null +++ b/src/param.c @@ -0,0 +1,69 @@ +/* + * The Network Discovery Tool. + * Copyright (C) 2005 Tadas Vilkeliskis aka vptr (vpointer@gmail.com) + * + * The Network Discovery Tool is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#include <stdlib.h> +#include <stdio.h> +#include <limits.h> +#include <unistd.h> +#define _GNU_SOURCE +#include <getopt.h> +#include "param.h" + +struct param param; + +int get_opt(int argc, char **argv) +{ + extern char *optarg; + extern int optind, opterr, optopt; + int c; + + optind = 2; + + param.packet_delay = 90; + + while ( (c = getopt(argc, argv, "i:t:h")) != -1) { + switch (c) { + case 'i': + param.iface = optarg; + break; + case 't': + param.packet_delay = strtol(optarg, (char**)NULL, 10); + if (param.packet_delay == LONG_MIN || param.packet_delay == LONG_MAX) { + fprintf(stderr, "Error: incorrect packet delay, using defaults.\n"); + param.packet_delay = 90; + } + break; + case 'h': + param.flags |= 0xFFFFFFFF; /* ijungiam paskutini bita */ + break; + default: + //fprintf(stderr, "Unknown option -%c\n", optopt); + return (-1); + break; + } + } + + if (optind - 2 == 0) { + fprintf(stderr, "Error: too few arguments\n"); + return (-1); + } + + return (0); +} |