release/src/router/samba3/examples/libsmbclient/smbwrapper/smbsh.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 2.0
   4    SMB wrapper functions - frontend
   5    Copyright (C) Andrew Tridgell 1998
   6    Copyright (C) Derrell Lipman 2003-2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <unistd.h>
  28 #include <limits.h>
  29 #include <string.h>
  30 #include <libsmbclient.h>
  31 #include "bsd-strlfunc.h"
  32
  33 #ifndef FALSE
  34 # define        FALSE   (0)
  35 # define        TRUE    (! FALSE)
  36 #endif
  37
  38 static void smbsh_usage(void)
  39 {
  40         printf("smbsh [options] [command [args] ...]\n\n");
  41         printf(" -p prepend library name\n");
  42         printf(" -a append library name\n");
  43         printf(" -n");
  44         printf(" -W workgroup\n");
  45         printf(" -U username\n");
  46         printf(" -P prefix\n");
  47         printf(" -R resolve order\n");
  48         printf(" -d debug level\n");
  49         printf(" -l logfile\n");
  50         printf(" -L libdir\n");
  51         exit(0);
  52 }
  53
  54 int main(int argc, char *argv[])
  55 {
  56         char *p, *u;
  57         char *libd = ".";
  58         char line[PATH_MAX], pre[PATH_MAX], post[PATH_MAX];
  59         int opt;
  60         int no_ask = 0;
  61         struct stat statbuf;
  62         extern char *optarg;
  63         extern int optind;
  64
  65         *pre = *post = '\0';
  66
  67         while ((opt = getopt(argc, argv, "p:a:d:nL:W:U:h")) != -1) {
  68                 switch (opt) {
  69                 case 'p':       /* prepend library before smbwrapper.so */
  70                         if (*pre != '\0')
  71                                 smbw_strlcat(pre, " ", sizeof(pre));
  72                         smbw_strlcat(pre, optarg, sizeof(pre));
  73                         break;
  74
  75                 case 'a':       /* append library after smbwrapper.so */
  76                         smbw_strlcat(post, " ", sizeof(post));
  77                         smbw_strlcat(post, optarg, sizeof(post));
  78                         break;
  79
  80                 case 'd':
  81                         setenv("DEBUG", optarg, TRUE);
  82                         break;
  83
  84                 case 'n':       /* don't ask for username/password */
  85                         no_ask++;
  86                         break;
  87
  88                 case 'L':
  89                         libd = optarg;
  90                         break;
  91
  92                 case 'W':
  93                         setenv("WORKGROUP", optarg, TRUE);
  94                         break;
  95
  96                 case 'U':
  97                         p = strchr(optarg,'%');
  98                         if (p) {
  99                                 *p=0;
 100                                 setenv("PASSWORD", p+1, TRUE);
 101                         }
 102                         setenv("USER", optarg, TRUE);
 103                         break;
 104
 105                 case 'h':
 106                 default:
 107                         smbsh_usage();
 108                 }
 109         }
 110
 111
 112         if (! no_ask) {
 113                 if (!getenv("USER")) {
 114                         printf("Username: ");
 115                         u = fgets(line, sizeof(line)-1, stdin);
 116                         setenv("USER", u, TRUE);
 117                 }
 118
 119                 if (!getenv("PASSWORD")) {
 120                         p = getpass("Password: ");
 121                         setenv("PASSWORD", p, TRUE);
 122                 }
 123         }
 124
 125         smbw_strlcpy(line, pre, PATH_MAX - strlen(line));
 126         smbw_strlcat(line, " ", sizeof(line));
 127         smbw_strlcat(line, libd, sizeof(line));
 128         smbw_strlcat(line, "/smbwrapper.so", sizeof(line));
 129         smbw_strlcat(line, post, sizeof(line));
 130         setenv("LD_PRELOAD", line, TRUE);
 131         setenv("LD_BIND_NOW", "true", TRUE);
 132
 133         snprintf(line,sizeof(line)-1,"%s/smbwrapper.32.so", libd);
 134
 135         if (stat(line, &statbuf) == 0 && S_ISREG(statbuf.st_mode)) {
 136                 snprintf(line, sizeof(line)-1,
 137                          "%s/smbwrapper.32.so:DEFAULT", libd);
 138                 setenv("_RLD_LIST", line, TRUE);
 139                 snprintf(line, sizeof(line)-1,
 140                          "%s/smbwrapper.so:DEFAULT", libd);
 141                 setenv("_RLDN32_LIST", line, TRUE);
 142         } else {
 143                 snprintf(line,sizeof(line)-1,"%s/smbwrapper.so:DEFAULT", libd);
 144                 setenv("_RLD_LIST", line, TRUE);
 145         }
 146
 147         if (optind < argc) {
 148                 execvp(argv[optind], &argv[optind]);
 149         } else {
 150                 char *shellpath = getenv("SHELL");
 151
 152                 setenv("PS1", "smbsh$ ", TRUE);
 153
 154                 if(shellpath) {
 155                         execl(shellpath,"smbsh", NULL);
 156                 } else {
 157                         setenv("SHELL", "/bin/sh", TRUE);
 158                         execl("/bin/sh", "smbsh", NULL);
 159                 }
 160         }
 161         printf("launch failed!\n");
 162         return 1;
 163 }