programs/net/net.c

   1 /*
   2  * Copyright 2007 Tim Schwartz
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdio.h>
  20 #include <string.h>
  21 #include <windows.h>
  22 #include <lm.h>
  23 #include "resources.h"
  24
  25 #define NET_START 0001
  26 #define NET_STOP  0002
  27
  28 int output_string(int msg, ...)
  29 {
  30     char msg_buffer[8192];
  31     va_list arguments;
  32
  33     LoadString(GetModuleHandle(NULL), msg, msg_buffer, sizeof(msg_buffer));
  34     va_start(arguments, msg);
  35     vprintf(msg_buffer, arguments);
  36     va_end(arguments);
  37     return 0;
  38 }
  39
  40 BOOL output_error_string(DWORD error)
  41 {
  42     LPSTR pBuffer;
  43     if (FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM |
  44             FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_ALLOCATE_BUFFER,
  45             NULL, error, 0, (LPSTR)&pBuffer, 0, NULL))
  46     {
  47         fputs(pBuffer, stdout);
  48         LocalFree(pBuffer);
  49         return TRUE;
  50     }
  51     return FALSE;
  52 }
  53
  54 static BOOL net_use(int argc, char *argv[])
  55 {
  56     USE_INFO_2 *buffer, *connection;
  57     DWORD read, total, resume_handle, rc, i;
  58     const char *status_description[] = { "OK", "Paused", "Disconnected", "An error occurred",
  59                                          "A network error occurred", "Connection is being made",
  60                                          "Reconnecting" };
  61     resume_handle = 0;
  62     buffer = NULL;
  63
  64     if(argc<3)
  65     {
  66         do {
  67             rc = NetUseEnum(NULL, 2, (BYTE **) &buffer, 2048, &read, &total, &resume_handle);
  68             if (rc != ERROR_MORE_DATA && rc != ERROR_SUCCESS)
  69             {
  70                 break;
  71             }
  72
  73             if(total == 0)
  74             {
  75                 output_string(STRING_NO_ENTRIES);
  76                 break;
  77             }
  78
  79             output_string(STRING_USE_HEADER);
  80             for (i = 0, connection = buffer; i < read; ++i, ++connection)
  81                 output_string(STRING_USE_ENTRY, status_description[connection->ui2_status], connection->ui2_local,
  82                                 connection->ui2_remote, connection->ui2_refcount);
  83
  84             if (buffer != NULL) NetApiBufferFree(buffer);
  85         } while (rc == ERROR_MORE_DATA);
  86
  87         return TRUE;
  88     }
  89
  90     return FALSE;
  91 }
  92
  93 static BOOL StopService(SC_HANDLE SCManager, SC_HANDLE serviceHandle)
  94 {
  95     LPENUM_SERVICE_STATUS dependencies = NULL;
  96     DWORD buffer_size = 0;
  97     DWORD count = 0, counter;
  98     BOOL result;
  99     SC_HANDLE dependent_serviceHandle;
 100     SERVICE_STATUS_PROCESS ssp;
 101
 102     result = EnumDependentServices(serviceHandle, SERVICE_ACTIVE, dependencies, buffer_size, &buffer_size, &count);
 103
 104     if(!result && (GetLastError() == ERROR_MORE_DATA))
 105     {
 106         dependencies = HeapAlloc(GetProcessHeap(), 0, buffer_size);
 107         if(EnumDependentServices(serviceHandle, SERVICE_ACTIVE, dependencies, buffer_size, &buffer_size, &count))
 108         {
 109             for(counter = 0; counter < count; counter++)
 110             {
 111                 output_string(STRING_STOP_DEP, dependencies[counter].lpDisplayName);
 112                 dependent_serviceHandle = OpenService(SCManager, dependencies[counter].lpServiceName, SC_MANAGER_ALL_ACCESS);
 113                 if(dependent_serviceHandle) result = StopService(SCManager, dependent_serviceHandle);
 114                 CloseServiceHandle(dependent_serviceHandle);
 115                 if(!result) output_string(STRING_CANT_STOP, dependencies[counter].lpDisplayName);
 116            }
 117         }
 118     }
 119
 120     if(result) result = ControlService(serviceHandle, SERVICE_CONTROL_STOP, (LPSERVICE_STATUS)&ssp);
 121     HeapFree(GetProcessHeap(), 0, dependencies);
 122     return result;
 123 }
 124
 125 static BOOL net_service(int operation, char *service_name)
 126 {
 127     SC_HANDLE SCManager, serviceHandle;
 128     BOOL result = 0;
 129     char service_display_name[4096];
 130     DWORD buffer_size = sizeof(service_display_name);
 131
 132     SCManager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
 133     if(!SCManager)
 134     {
 135         output_string(STRING_NO_SCM);
 136         return FALSE;
 137     }
 138     serviceHandle = OpenService(SCManager, service_name, SC_MANAGER_ALL_ACCESS);
 139     if(!serviceHandle)
 140     {
 141         output_string(STRING_NO_SVCHANDLE);
 142         CloseServiceHandle(SCManager);
 143         return FALSE;
 144     }
 145
 146
 147     GetServiceDisplayName(SCManager, service_name, service_display_name, &buffer_size);
 148     if (!service_display_name[0]) strcpy(service_display_name, service_name);
 149
 150     switch(operation)
 151     {
 152     case NET_START:
 153         output_string(STRING_START_SVC, service_display_name);
 154         result = StartService(serviceHandle, 0, NULL);
 155
 156         if(result) output_string(STRING_START_SVC_SUCCESS, service_display_name);
 157         else
 158         {
 159             if (!output_error_string(GetLastError()))
 160                 output_string(STRING_START_SVC_FAIL, service_display_name);
 161         }
 162         break;
 163     case NET_STOP:
 164         output_string(STRING_STOP_SVC, service_display_name);
 165         result = StopService(SCManager, serviceHandle);
 166
 167         if(result) output_string(STRING_STOP_SVC_SUCCESS, service_display_name);
 168         else
 169         {
 170             if (!output_error_string(GetLastError()))
 171                 output_string(STRING_STOP_SVC_FAIL, service_display_name);
 172         }
 173         break;
 174     }
 175
 176     CloseServiceHandle(serviceHandle);
 177     CloseServiceHandle(SCManager);
 178     return result;
 179 }
 180
 181 int main(int argc, char *argv[])
 182 {
 183     if (argc < 2)
 184     {
 185         output_string(STRING_USAGE);
 186         return 1;
 187     }
 188
 189     if(!strcasecmp(argv[1], "help"))
 190     {
 191         output_string(STRING_HELP_USAGE);
 192     }
 193
 194     if(!strcasecmp(argv[1], "start"))
 195     {
 196         if(argc < 3)
 197         {
 198             output_string(STRING_START_USAGE);
 199             return 1;
 200         }
 201
 202         if(!net_service(NET_START, argv[2]))
 203         {
 204             return 1;
 205         }
 206         return 0;
 207     }
 208
 209     if(!strcasecmp(argv[1], "stop"))
 210     {
 211         if(argc < 3)
 212         {
 213             output_string(STRING_STOP_USAGE);
 214             return 1;
 215         }
 216
 217         if(!net_service(NET_STOP, argv[2]))
 218         {
 219             return 1;
 220         }
 221         return 0;
 222     }
 223
 224     if(!strcasecmp(argv[1], "use"))
 225     {
 226         if(!net_use(argc, argv)) return 1;
 227     }
 228
 229     return 0;
 230 }