main.c

   1 /**
   2  * nmrpflash - Netgear Unbrick Utility
   3  * Copyright (C) 2016 Joseph Lehner <joseph.c.lehner@gmail.com>
   4  *
   5  * nmrpflash 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  * nmrpflash 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 nmrpflash.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #include <unistd.h>
  21 #include <getopt.h>
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include "nmrpd.h"
  25
  26 int verbosity = 0;
  27
  28 void usage(FILE *fp)
  29 {
  30         fprintf(fp,
  31                         "Usage: nmrpflash [OPTIONS...]\n"
  32                         "\n"
  33                         "Options (-a, -i and -f and/or -c are mandatory):\n"
  34                         " -a <ipaddr>     IP address to assign to target device\n"
  35                         " -c <command>    Command to run before (or instead of) TFTP upload\n"
  36                         " -f <firmware>   Firmware file\n"
  37                         " -F <filename>   Remote filename to use during TFTP upload\n"
  38                         " -i <interface>  Network interface directly connected to device\n"
  39                         " -m <mac>        MAC address of target device (xx:xx:xx:xx:xx:xx)\n"
  40                         " -M <netmask>    Subnet mask to assign to target device\n"
  41                         " -t <timeout>    Timeout (in milliseconds) for regular messages\n"
  42                         " -T <timeout>    Time (seconds) to wait after successfull TFTP upload\n"
  43                         " -p <port>       Port to use for TFTP upload\n"
  44 #ifdef NMRPFLASH_SET_REGION
  45                         " -R <region>     Set device region\n"
  46 #endif
  47 #ifdef NMRPFLASH_TFTP_TEST
  48                         " -U              Test TFTP upload\n"
  49 #endif
  50                         " -v              Be verbose\n"
  51                         " -V              Print version and exit\n"
  52                         " -L              List network interfaces\n"
  53                         " -h              Show this screen\n"
  54                         "\n"
  55                         "Example:\n"
  56                         "\n"
  57 #ifndef NMRPFLASH_WINDOWS
  58                         "$ sudo nmrpflash -i eth0 -a 192.168.1.254 -f firmware.bin\n"
  59 #else
  60                         "C:\\> nmrpflash.exe -i net0 -a 192.168.1.254 -f firmware.bin\n"
  61 #endif
  62                         "\n"
  63                         "nmrpflash %s, Copyright (C) 2016 Joseph C. Lehner\n"
  64                         "nmrpflash is free software, licensed under the GNU GPLv3.\n"
  65                         "Source code at https://github.com/jclehner/nmrpflash\n"
  66                         "\n",
  67                         NMRPFLASH_VERSION
  68           );
  69 }
  70
  71 int main(int argc, char **argv)
  72 {
  73         int c, val, max;
  74         struct nmrpd_args args = {
  75                 .rx_timeout = 200,
  76                 .ul_timeout = 120000,
  77                 .tftpcmd = NULL,
  78                 .file_local = NULL,
  79                 .file_remote = NULL,
  80                 .ipaddr = NULL,
  81                 .ipmask = "255.255.255.0",
  82                 .intf = NULL,
  83                 .mac = "ff:ff:ff:ff:ff:ff",
  84                 .op = NMRP_UPLOAD_FW,
  85                 .port = 69,
  86                 .force_root = 1
  87         };
  88 #ifdef NMRPFLASH_WINDOWS
  89         WSADATA wsa;
  90
  91         val = WSAStartup(MAKEWORD(2, 2), &wsa);
  92         if (val != 0) {
  93                 win_perror2("WSAStartup", val);
  94                 return 1;
  95         }
  96 #endif
  97
  98         opterr = 0;
  99
 100         while ((c = getopt(argc, argv, "a:c:f:F:i:m:M:p:R:t:T:hLVvU")) != -1) {
 101                 max = 0x7fffffff;
 102                 switch (c) {
 103                         case 'a':
 104                                 args.ipaddr = optarg;
 105                                 break;
 106                         case 'c':
 107                                 args.tftpcmd = optarg;
 108                                 break;
 109                         case 'f':
 110                                 args.file_local = optarg;
 111                                 break;
 112                         case 'F':
 113                                 args.file_remote = optarg;
 114                                 break;
 115                         case 'i':
 116                                 args.intf = optarg;
 117                                 break;
 118                         case 'm':
 119                                 args.mac = optarg;
 120                                 break;
 121                         case 'M':
 122                                 args.ipmask = optarg;
 123                                 break;
 124                         case 'p':
 125 #ifdef NMRPFLASH_SET_REGION
 126                         case 'R':
 127 #endif
 128                         case 'T':
 129                         case 't':
 130                                 if (c == 'p') {
 131                                         max = 0xffff;
 132                                 } else if (c == 'R') {
 133                                         max = 0x0009;
 134                                 }
 135
 136                                 val = atoi(optarg);
 137                                 if (val <= 0 || val > max) {
 138                                         fprintf(stderr, "Invalid numeric value for -%c.\n", c);
 139                                         return 1;
 140                                 }
 141
 142                                 if (c == 'p') {
 143                                         args.port = val;
 144                                 } else if (c == 't') {
 145                                         args.rx_timeout = val;
 146                                 } else if (c == 'T') {
 147                                         args.ul_timeout = val * 1000;
 148                                 } else if (c == 'R') {
 149                                         args.region = val;
 150                                 }
 151
 152                                 break;
 153                         case 'V':
 154                                 printf("nmrpflash %s\n", NMRPFLASH_VERSION);
 155                                 val = 0;
 156                                 goto out;
 157                         case 'v':
 158                                 ++verbosity;
 159                                 break;
 160                         case 'L':
 161                                 val = ethsock_list_all();
 162                                 goto out;
 163                         case 'h':
 164                                 usage(stdout);
 165                                 val = 0;
 166                                 goto out;
 167 #ifdef NMRPFLASH_TFTP_TEST
 168                         case 'U':
 169                                 if (args.ipaddr && args.file_local) {
 170                                         val = tftp_put(&args);
 171                                         goto out;
 172                                 }
 173                                 /* fall through */
 174 #endif
 175                         default:
 176                                 usage(stderr);
 177                                 val = 1;
 178                                 goto out;
 179                 }
 180         }
 181
 182         if ((!args.file_local && !args.tftpcmd) || !args.intf || !args.ipaddr) {
 183                 usage(stderr);
 184                 return 1;
 185         }
 186
 187 #ifndef NMRPFLASH_WINDOWS
 188         if (geteuid() != 0) {
 189                 fprintf(stderr, "This program must be run as root!\n");
 190                 return 1;
 191         }
 192 #endif
 193
 194         val = nmrp_do(&args);
 195
 196 out:
 197 #ifdef NMRPFLASH_WINDOWS
 198         WSACleanup();
 199 #endif
 200         return val;
 201 }