main.c

   1 /**
   2  * nmrp-flash - Netgear Unbrick Utility
   3  * Copyright (C) 2016 Joseph Lehner <joseph.c.lehner@gmail.com>
   4  *
   5  * nmrp-flash is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * nmrp-flash is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with nmrp-flash.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #include <getopt.h>
  21 #include <stdlib.h>
  22 #include <stdio.h>
  23 #include "nmrpd.h"
  24 #include "ethsock.h"
  25
  26 int verbosity = 0;
  27
  28 void usage(FILE *fp)
  29 {
  30         fprintf(fp,
  31                         "Usage: nmrp-flash [OPTIONS...]\n"
  32                         "\n"
  33                         "Options (-a, -i and -f are mandatory):\n"
  34                         " -a <ipaddr>     IP address to assign to target device\n"
  35                         " -f <firmware>   Firmware file\n"
  36                         " -i <interface>  Network interface directly connected to device\n"
  37                         " -m <mac>        MAC address of target device (xx:xx:xx:xx:xx:xx)\n"
  38                         " -M <netmask>    Subnet mask to assign to target device\n"
  39                         " -t <timeout>    Timeout (in milliseconds) for regular messages\n"
  40                         " -T <timeout>    Time to wait after successfull TFTP upload\n"
  41                         " -p <port>       Port to use for TFTP upload\n"
  42                         " -v              Be verbose\n"
  43                         " -V              Print version and exit\n"
  44                         " -L              List network interfaces\n"
  45                         " -h              Show this screen\n"
  46                         "\n"
  47                         "Example:\n"
  48                         "\n"
  49                         "$ sudo nmrp-flash -a 192.168.1.254 -i eth0 -f firmware.bin\n"
  50                         "\n"
  51                         "nmrp-flash v%s, Copyright (C) 2016 Joseph C. Lehner\n"
  52                         "nmrp-flash is free software, licensed under the GNU GPLv3.\n"
  53                         "Source code at https://github.com/jclehner/nmrp-flash\n"
  54                         "\n",
  55                         NMRPD_VERSION
  56           );
  57 }
  58
  59 int main(int argc, char **argv)
  60 {
  61         int c, val, max;
  62         struct nmrpd_args args = {
  63                 .rx_timeout = 200,
  64                 .ul_timeout = 60000,
  65                 .tftpcmd = NULL,
  66                 .filename = NULL,
  67                 .ipaddr = NULL,
  68                 .ipmask = "255.255.255.0",
  69                 .intf = NULL,
  70                 .mac = "ff:ff:ff:ff:ff:ff",
  71                 .op = NMRP_UPLOAD_FW,
  72                 .port = 69,
  73                 .force_root = 1
  74         };
  75
  76         opterr = 0;
  77
  78         while ((c = getopt(argc, argv, "a:f:i:m:M:p:t:T:hLVv")) != -1) {
  79                 max = 0x7fffffff;
  80                 switch (c) {
  81                         case 'a':
  82                                 args.ipaddr = optarg;
  83                                 break;
  84                         case 'f':
  85                                 args.filename = optarg;
  86                                 break;
  87                         case 'i':
  88                                 args.intf = optarg;
  89                                 break;
  90                         case 'm':
  91                                 args.mac = optarg;
  92                                 break;
  93                         case 'M':
  94                                 args.ipmask = optarg;
  95                                 break;
  96                         case 'p':
  97                                 max = 0xffff;
  98                         case 'T':
  99                         case 't':
 100                                 val = atoi(optarg);
 101                                 if (val <= 0 || val > max) {
 102                                         fprintf(stderr, "Invalid numeric value for -%c.\n", c);
 103                                         return 1;
 104                                 }
 105
 106                                 if (c == 'p') {
 107                                         args.port = val;
 108                                 } else if (c == 't') {
 109                                         args.rx_timeout = val;
 110                                 } else {
 111                                         args.ul_timeout = val;
 112                                 }
 113
 114                                 break;
 115                         case 'V':
 116                                 printf("nmrp-flash v%s\n", NMRPD_VERSION);
 117                                 return 0;
 118                         case 'v':
 119                                 ++verbosity;
 120                                 break;
 121                         case 'L':
 122                                 return ethsock_list_all();
 123                         case 'h':
 124                                 usage(stdout);
 125                                 return 0;
 126                         default:
 127                                 usage(stderr);
 128                                 return 1;
 129                 }
 130         }
 131
 132         if (!args.filename || !args.intf || !args.ipaddr) {
 133                 usage(stderr);
 134                 return 1;
 135         }
 136
 137 #ifndef NMRPFLASH_WINDOWS
 138         if (geteuid() != 0) {
 139                 fprintf(stderr, "This program must be run as root!\n");
 140                 return 1;
 141         }
 142 #endif
 143
 144         return nmrp_do(&args);
 145 }