Update README.md
[oweals/nmrpflash.git] / main.c
diff --git a/main.c b/main.c
index 39f327c32e3efc720fe8cd5a7c1e651b79912df0..cd1a81bbb766a786fe98ac60547daa8949897b98 100644 (file)
--- a/main.c
+++ b/main.c
+/**
+ * nmrpflash - Netgear Unbrick Utility
+ * Copyright (C) 2016 Joseph Lehner <joseph.c.lehner@gmail.com>
+ *
+ * nmrpflash 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * nmrpflash 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 nmrpflash.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <unistd.h>
 #include <getopt.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include "nmrpd.h"
 
+int verbosity = 0;
+
 void usage(FILE *fp)
 {
        fprintf(fp,
-                       "Usage: nmrpd [OPTIONS...]\n"
+                       "Usage: nmrpflash [OPTIONS...]\n"
                        "\n"
-                       "Options:\n"
+                       "Options (-i, and -f or -c are mandatory):\n"
                        " -a <ipaddr>     IP address to assign to target device\n"
+                       " -A <ipaddr>     IP address to assign to selected interface\n"
+                       " -B              Blind mode (don't wait for response packets)\n"
+                       " -c <command>    Command to run before (or instead of) TFTP upload\n"
                        " -f <firmware>   Firmware file\n"
+                       " -F <filename>   Remote filename to use during TFTP upload\n"
                        " -i <interface>  Network interface directly connected to device\n"
                        " -m <mac>        MAC address of target device (xx:xx:xx:xx:xx:xx)\n"
                        " -M <netmask>    Subnet mask to assign to target device\n"
-                       " -t <timeout>    Timeout (in milliseconds) for regular messages\n"
-                       " -T <timeout>    Time to wait after successfull TFTP upload\n"
+                       " -t <timeout>    Timeout (in milliseconds) for NMRP packets\n"
+                       " -T <timeout>    Time (seconds) to wait after successfull TFTP upload\n"
                        " -p <port>       Port to use for TFTP upload\n"
+#ifdef NMRPFLASH_SET_REGION
+                       " -R <region>     Set device region (NA, WW, GR, PR, RU, BZ, IN, KO, JP)\n"
+#endif
+#ifdef NMRPFLASH_TFTP_TEST
+                       " -U              Test TFTP upload\n"
+#endif
+                       " -v              Be verbose\n"
+                       " -V              Print version and exit\n"
+                       " -L              List network interfaces\n"
                        " -h              Show this screen\n"
                        "\n"
-                       "Options -a, -i and -f are mandatory!\n"
+                       "Example: (run as "
+#ifndef NMRPFLASH_WINDOWS
+                       "root"
+#else
+                       "administrator"
+#endif
+                       ")\n\n"
+#ifndef NMRPFLASH_WINDOWS
+                       "# nmrpflash -i eth0 -f firmware.bin\n"
+#else
+                       "C:\\> nmrpflash.exe -i net0 -f firmware.bin\n"
+#endif
+                       "\n"
+                       "When using -c, the environment variables IP, PORT, NETMASK\n"
+                       "and MAC are set to the device IP address, TFTP port, subnet\n"
+                       "mask and MAC address, respectively.\n"
                        "\n"
+                       "nmrpflash %s, Copyright (C) 2016 Joseph C. Lehner\n"
+                       "nmrpflash is free software, licensed under the GNU GPLv3.\n"
+                       "Source code at https://github.com/jclehner/nmrpflash\n"
+                       "\n",
+                       NMRPFLASH_VERSION
          );
 }
 
+#ifdef NMRPFLASH_WINDOWS
+void require_admin()
+{
+       SID_IDENTIFIER_AUTHORITY auth = SECURITY_NT_AUTHORITY;
+       PSID group = NULL;
+       BOOL admin, success = AllocateAndInitializeSid(
+               &auth, 2, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS,
+               0, 0, 0, 0, 0, 0, &group
+       );
+
+       if (success) {
+               success = CheckTokenMembership(NULL, group, &admin);
+               FreeSid(group);
+               if (success) {
+                       if (!admin) {
+                               fprintf(stderr, "Error: must be run as administrator\n");
+                               exit(1);
+                       } else {
+                               return;
+                       }
+               }
+       }
+
+       fprintf(stderr, "Warning: failed to check administrator privileges\n");
+}
+
+void show_exit_prompt()
+{
+       DWORD pid;
+       HWND win = GetConsoleWindow();
+       if (!win || !GetWindowThreadProcessId(win, &pid)) {
+               return;
+       }
+
+       if (GetCurrentProcessId() == pid) {
+               printf("Press any key to exit\n");
+               getch();
+       }
+}
+#else
+void require_admin()
+{
+       if (getuid() != 0) {
+               fprintf(stderr, "Error: must be run as root\n");
+               exit(1);
+       }
+}
+#endif
+
 int main(int argc, char **argv)
 {
        int c, val, max;
+       bool list = false, have_dest_mac = false;
        struct nmrpd_args args = {
-               .rx_timeout = 200,
-               .ul_timeout = 60000,
-               .filename = NULL,
+               .rx_timeout = 200 * 1000,
+               .ul_timeout = 5 * 60 * 1000,
+               .tftpcmd = NULL,
+               .file_local = NULL,
+               .file_remote = NULL,
+               .ipaddr_intf = NULL,
                .ipaddr = NULL,
                .ipmask = "255.255.255.0",
                .intf = NULL,
                .mac = "ff:ff:ff:ff:ff:ff",
                .op = NMRP_UPLOAD_FW,
                .port = 69,
-               .force_root = 1
+               .region = NULL,
+               .blind = false,
        };
+#ifdef NMRPFLASH_WINDOWS
+       char *newpath = NULL;
+       char *oldpath = NULL;
+       char *windir = NULL;
+       WSADATA wsa;
+
+       atexit(&show_exit_prompt);
+
+       val = WSAStartup(MAKEWORD(2, 2), &wsa);
+       if (val != 0) {
+               win_perror2("WSAStartup", val);
+               return 1;
+       }
+
+
+#ifndef _WIN64
+       // This dirty hack works around the WOW64 file system redirector[1], which would prevent
+       // us from calling programs residing in %windir%\System32 when running on a 64bit system
+       // (since nmrpflash is currently shipped as 32bit only).
+       //
+       // [1] https://msdn.microsoft.com/en-us/library/windows/desktop/aa384187(v=vs.85).aspx
+
+       oldpath = getenv("PATH");
+       windir = getenv("WINDIR");
+       if (oldpath && windir) {
+               newpath = malloc(strlen(oldpath) + strlen(windir) + 32);
+               sprintf(newpath, "%s;%s\\Sysnative", oldpath, windir);
+               SetEnvironmentVariable("PATH", newpath);
+               free(newpath);
+       }
+#endif
+#endif
 
        opterr = 0;
 
-       while ((c = getopt(argc, argv, "a:f:i:m:M:p:t:T:")) != -1) {
-               max = 0xffffffff;
+       while ((c = getopt(argc, argv, "a:A:Bc:f:F:i:m:M:p:R:t:T:hLVvU")) != -1) {
+               max = 0x7fffffff;
                switch (c) {
                        case 'a':
                                args.ipaddr = optarg;
                                break;
+                       case 'A':
+                               args.ipaddr_intf = optarg;
+                               break;
+                       case 'B':
+                               args.blind = true;
+                               break;
+                       case 'c':
+                               args.tftpcmd = optarg;
+                               break;
                        case 'f':
-                               args.filename = optarg;
+                               args.file_local = optarg;
+                               break;
+                       case 'F':
+                               args.file_remote = optarg;
                                break;
                        case 'i':
                                args.intf = optarg;
                                break;
                        case 'm':
                                args.mac = optarg;
+                               have_dest_mac = true;
                                break;
                        case 'M':
                                args.ipmask = optarg;
                                break;
+#ifdef NMRPFLASH_SET_REGION
+                       case 'R':
+                               args.region = optarg;
+                               break;
+#endif
                        case 'p':
-                               max = 0xffff;
                        case 'T':
                        case 't':
+                               if (c == 'p') {
+                                       max = 0xffff;
+                               }
+
                                val = atoi(optarg);
                                if (val <= 0 || val > max) {
                                        fprintf(stderr, "Invalid numeric value for -%c.\n", c);
@@ -73,25 +235,66 @@ int main(int argc, char **argv)
                                if (c == 'p') {
                                        args.port = val;
                                } else if (c == 't') {
-                                       args.rx_timeout = val;
-                               } else {
-                                       args.ul_timeout = val;
+                                       args.rx_timeout = val * 1000;
+                               } else if (c == 'T') {
+                                       args.ul_timeout = val * 1000;
                                }
 
+                               break;
+                       case 'V':
+                               printf("nmrpflash %s\n", NMRPFLASH_VERSION);
+                               val = 0;
+                               goto out;
+                       case 'v':
+                               ++verbosity;
+                               break;
+                       case 'L':
+                               list = true;
                                break;
                        case 'h':
                                usage(stdout);
-                               return 0;
+                               val = 0;
+                               goto out;
+#ifdef NMRPFLASH_TFTP_TEST
+                       case 'U':
+                               if (args.ipaddr && args.file_local) {
+                                       val = tftp_put(&args);
+                                       goto out;
+                               }
+                               /* fall through */
+#endif
                        default:
                                usage(stderr);
-                               return 1;
+                               val = 1;
+                               goto out;
                }
        }
 
-       if (!args.filename || !args.intf || !args.ipaddr) {
+       if (args.ipaddr_intf && !args.ipaddr) {
+               fprintf(stderr, "Error: cannot use -A <ipaddr> without using -a <ipaddr>.\n");
+               return 1;
+       }
+
+       if (args.blind && !have_dest_mac) {
+               fprintf(stderr, "Error: use of -B requires -m <mac>.\n");
+               return 1;
+       }
+
+#ifndef NMRPFLASH_FUZZ
+       if (!list && ((!args.file_local && !args.tftpcmd) || !args.intf)) {
                usage(stderr);
                return 1;
        }
 
-       return nmrp_do(&args);
+       if (!list) {
+               require_admin();
+       }
+#endif
+       val = !list ? nmrp_do(&args) : ethsock_list_all();
+
+out:
+#ifdef NMRPFLASH_WINDOWS
+       WSACleanup();
+#endif
+       return val;
 }