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(Unicode C) SSH to Cisco Switch - Processing "More" ResponsesDemonstrates connecting to a Cisco switch, running a command to enable privileged mode, then running a command to get a paged response requiring the SPACE char to be sent to process "--More--".
#include <C_CkSshW.h> #include <C_CkStringArrayW.h> #include <C_CkStringBuilderW.h> void ChilkatSample(void) { HCkSshW ssh; BOOL success; int channelNum; HCkStringArrayW saMatch; HCkStringBuilderW sbReceived; BOOL moreComing; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. ssh = CkSshW_Create(); success = CkSshW_Connect(ssh,L"SSH_SERVER_DOMAIN_OR_IP_ADDRESS",22); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // 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; } // Start a shell session. channelNum = CkSshW_QuickShell(ssh); if (channelNum < 0) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // If the CISCO switch returns a prompt with ">", then read until we get the prompt. // (It's not actually required that we do this, but it helps to know that all is OK at this point..) success = CkSshW_ChannelReceiveUntilMatch(ssh,channelNum,L">",L"utf-8",TRUE); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Show what we received so far: wprintf(L"%s\n",CkSshW_getReceivedText(ssh,channelNum,L"utf-8")); // Send the "ena" command to enable privileged mode. // (For the Cisco switch, terminate command with a single CR char.) success = CkSshW_ChannelSendString(ssh,channelNum,L"ena\r",L"utf-8"); // Assume success for this example to make it shorter.. // Read to the "Password:" prompt. success = CkSshW_ChannelReceiveUntilMatch(ssh,channelNum,L"Password:",L"utf-8",TRUE); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Show what we received... wprintf(L"%s\n",CkSshW_getReceivedText(ssh,channelNum,L"utf-8")); // Send the password. success = CkSshW_ChannelSendString(ssh,channelNum,L"MY_PASSWORD_FOR_ELEVATED_PRIVILEGE\r",L"utf-8"); // The prompt now changes from "Something>" to "Something#> // Read until the new prompt.. success = CkSshW_ChannelReceiveUntilMatch(ssh,channelNum,L"#",L"utf-8",TRUE); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Show what we received... wprintf(L"%s\n",CkSshW_getReceivedText(ssh,channelNum,L"utf-8")); // Send the "show running-config" command. // The response will be in multiple pages, each ending with "--More--" and requiring a SPACE bar to be sent // to get the next page. success = CkSshW_ChannelSendString(ssh,channelNum,L"show running-config\r",L"utf-8"); // Consume the response until we end with another prompt. saMatch = CkStringArrayW_Create(); // Change "YOUR_PROMPT" to your actual prompt. We don't want to check for only "#" because // it's not specific enough. The data in the response could contain the "#" char... CkStringArrayW_Append(saMatch,L"YOUR_PROMPT#"); CkStringArrayW_Append(saMatch,L"--More--"); sbReceived = CkStringBuilderW_Create(); moreComing = TRUE; while ((moreComing == TRUE)) { success = CkSshW_ChannelReceiveUntilMatchN(ssh,channelNum,saMatch,L"utf-8",TRUE); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); CkStringArrayW_Dispose(saMatch); CkStringBuilderW_Dispose(sbReceived); return; } moreComing = FALSE; CkStringBuilderW_Clear(sbReceived); CkStringBuilderW_Append(sbReceived,CkSshW_getReceivedText(ssh,channelNum,L"utf-8")); wprintf(L"%s\n",CkStringBuilderW_getAsString(sbReceived)); if (CkStringBuilderW_Contains(sbReceived,L"--More--",TRUE) == TRUE) { moreComing = TRUE; // Send a SPACE char just as if we were interactively pressing the SPACE key to get more output. success = CkSshW_ChannelSendString(ssh,channelNum,L" ",L"utf-8"); } } CkSshW_Disconnect(ssh); CkSshW_Dispose(ssh); CkStringArrayW_Dispose(saMatch); CkStringBuilderW_Dispose(sbReceived); } |
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