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(Unicode C) SSH Exec (Execute Command Line)Shows how to execute a command on an SSH server and retrieve the command output.
#include <C_CkSshW.h> void ChilkatSample(void) { HCkSshW ssh; const wchar_t *hostname; int port; BOOL success; int channelNum; const wchar_t *cmd1; const wchar_t *cmd2; const wchar_t *cmd3; const wchar_t *cmd4; const wchar_t *cmd5; const wchar_t *cmd6; const wchar_t *cmdOutput; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. ssh = CkSshW_Create(); // Connect to an SSH server: // Hostname may be an IP address or hostname: hostname = L"192.168.1.108"; port = 22; success = CkSshW_Connect(ssh,hostname,port); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Wait a max of 5 seconds when reading responses.. CkSshW_putIdleTimeoutMs(ssh,5000); // Authenticate using login/password: success = CkSshW_AuthenticatePw(ssh,L"myLogin",L"myPassword"); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Open a session channel. (It is possible to have multiple // session channels open simultaneously.) channelNum = CkSshW_OpenSessionChannel(ssh); if (channelNum < 0) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // The SendReqExec method starts a command on the remote // server. The syntax of the command string depends on the // default shell used on the remote server to run the command. // On Windows systems it is CMD.EXE. On UNIX/Linux // systems the user's default shell is typically defined in /etc/password. // Here are some examples of command lines for <b>Windows SSH servers</b>: // Get a directory listing: cmd1 = L"dir"; // Do a nameserver lookup: cmd2 = L"nslookup chilkatsoft.com"; // List a specific directory. Given that the shell is CMD.EXE, backslashes must // be used: cmd3 = L"dir \\temp"; // Execute a sequence of commands. The syntax for CMD.EXE may be found // here: http://technet.microsoft.com/en-us/library/bb490880.aspx. Notice how the commands // are separated by "&&" and the entire command must be enclosed in quotes: cmd4 = L"\"cd \\temp&&dir\""; // Here are two examples of command lines for <b>Linux/UNIX SSH servers</b>: // Get a directory listing: cmd5 = L"ls -l /tmp"; // Run a series of commands (syntax may depend on your default shell): cmd6 = L"cd /etc; ls -la"; // Request a directory listing on the remote server: // If your server is Windows, change the string from "ls" to "dir" success = CkSshW_SendReqExec(ssh,channelNum,L"ls"); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Call ChannelReceiveToClose to read // output until the server's corresponding "channel close" is received. success = CkSshW_ChannelReceiveToClose(ssh,channelNum); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Let's pickup the accumulated output of the command: cmdOutput = CkSshW_getReceivedText(ssh,channelNum,L"ansi"); if (CkSshW_getLastMethodSuccess(ssh) != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Display the remote shell's command output: wprintf(L"%s\n",cmdOutput); // Disconnect CkSshW_Disconnect(ssh); CkSshW_Dispose(ssh); } |
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