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Diffstat (limited to 'source4/utils/smbfilter.c')
| -rw-r--r-- | source4/utils/smbfilter.c | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/source4/utils/smbfilter.c b/source4/utils/smbfilter.c deleted file mode 100644 index 9f240c31ca..0000000000 --- a/source4/utils/smbfilter.c +++ /dev/null @@ -1,245 +0,0 @@ -/* - Unix SMB/CIFS implementation. - SMB filter/socket plugin - Copyright (C) Andrew Tridgell 1999 - - 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., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#include "includes.h" - -#define SECURITY_MASK 0 -#define SECURITY_SET 0 - -/* this forces non-unicode */ -#define CAPABILITY_MASK 0 -#define CAPABILITY_SET 0 - -/* and non-unicode for the client too */ -#define CLI_CAPABILITY_MASK 0 -#define CLI_CAPABILITY_SET 0 - -static char *netbiosname; -static char packet[BUFFER_SIZE]; - -static void save_file(const char *fname, void *packet, size_t length) -{ - int fd; - fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0644); - if (fd == -1) { - perror(fname); - return; - } - if (write(fd, packet, length) != length) { - fprintf(stderr,"Failed to write %s\n", fname); - return; - } - close(fd); - printf("Wrote %d bytes to %s\n", length, fname); -} - -static void filter_reply(char *buf) -{ - int msg_type = CVAL(buf,0); - int type = CVAL(buf,smb_com); - unsigned x; - - if (msg_type) return; - - switch (type) { - - case SMBnegprot: - /* force the security bits */ - x = CVAL(buf, smb_vwv1); - x = (x | SECURITY_SET) & ~SECURITY_MASK; - SCVAL(buf, smb_vwv1, x); - - /* force the capabilities */ - x = IVAL(buf,smb_vwv9+1); - x = (x | CAPABILITY_SET) & ~CAPABILITY_MASK; - SIVAL(buf, smb_vwv9+1, x); - break; - - } -} - -static void filter_request(char *buf) -{ - int msg_type = CVAL(buf,0); - int type = CVAL(buf,smb_com); - pstring name1,name2; - unsigned x; - - if (msg_type) { - /* it's a netbios special */ - switch (msg_type) { - case 0x81: - /* session request */ - name_extract(buf,4,name1); - name_extract(buf,4 + name_len(buf + 4),name2); - d_printf("sesion_request: %s -> %s\n", - name1, name2); - if (netbiosname) { - /* replace the destination netbios name */ - name_mangle(netbiosname, buf+4, 0x20); - } - } - return; - } - - /* it's an ordinary SMB request */ - switch (type) { - case SMBsesssetupX: - /* force the client capabilities */ - x = IVAL(buf,smb_vwv11); - d_printf("SMBsesssetupX cap=0x%08x\n", x); - d_printf("pwlen=%d/%d\n", SVAL(buf, smb_vwv7), SVAL(buf, smb_vwv8)); - system("mv sessionsetup.dat sessionsetup1.dat"); - save_file("sessionsetup.dat", smb_buf(buf), SVAL(buf, smb_vwv7)); - x = (x | CLI_CAPABILITY_SET) & ~CLI_CAPABILITY_MASK; - SIVAL(buf, smb_vwv11, x); - break; - } - -} - - -static void filter_child(int c, struct in_addr dest_ip) -{ - int s; - - /* we have a connection from a new client, now connect to the server */ - s = open_socket_out(SOCK_STREAM, &dest_ip, 445, LONG_CONNECT_TIMEOUT); - - if (s == -1) { - d_printf("Unable to connect to %s\n", inet_ntoa(dest_ip)); - exit(1); - } - - while (c != -1 || s != -1) { - fd_set fds; - int num; - - FD_ZERO(&fds); - if (s != -1) FD_SET(s, &fds); - if (c != -1) FD_SET(c, &fds); - - num = sys_select_intr(MAX(s+1, c+1),&fds,NULL,NULL,NULL); - if (num <= 0) continue; - - if (c != -1 && FD_ISSET(c, &fds)) { - if (!receive_smb(c, packet, 0)) { - d_printf("client closed connection\n"); - exit(0); - } - filter_request(packet); - if (!send_smb(s, packet)) { - d_printf("server is dead\n"); - exit(1); - } - } - if (s != -1 && FD_ISSET(s, &fds)) { - if (!receive_smb(s, packet, 0)) { - d_printf("server closed connection\n"); - exit(0); - } - filter_reply(packet); - if (!send_smb(c, packet)) { - d_printf("client is dead\n"); - exit(1); - } - } - } - d_printf("Connection closed\n"); - exit(0); -} - - -static void start_filter(char *desthost) -{ - int s, c; - struct in_addr dest_ip; - - CatchChild(); - - /* start listening on port 445 locally */ - s = open_socket_in(SOCK_STREAM, 445, 0, 0, True); - - if (s == -1) { - d_printf("bind failed\n"); - exit(1); - } - - if (listen(s, 5) == -1) { - d_printf("listen failed\n"); - } - - if (!resolve_name(desthost, &dest_ip, 0x20)) { - d_printf("Unable to resolve host %s\n", desthost); - exit(1); - } - - while (1) { - fd_set fds; - int num; - struct sockaddr addr; - socklen_t in_addrlen = sizeof(addr); - - FD_ZERO(&fds); - FD_SET(s, &fds); - - num = sys_select_intr(s+1,&fds,NULL,NULL,NULL); - if (num > 0) { - c = accept(s, &addr, &in_addrlen); - if (c != -1) { - if (fork() == 0) { - close(s); - filter_child(c, dest_ip); - exit(0); - } else { - close(c); - } - } - } - } -} - - -int main(int argc, char *argv[]) -{ - char *desthost; - pstring configfile; - - setup_logging(argv[0], DEBUG_STDOUT); - - pstrcpy(configfile,dyn_CONFIGFILE); - - if (argc < 2) { - fprintf(stderr,"smbfilter <desthost> <netbiosname>\n"); - exit(1); - } - - desthost = argv[1]; - if (argc > 2) { - netbiosname = argv[2]; - } - - if (!lp_load(configfile,True,False,False)) { - d_printf("Unable to load config file\n"); - } - - start_filter(desthost); - return 0; -} |