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#include "config.h" |
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|
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#ifdef NTLM_ENABLE |
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#include "fetchmail.h" |
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#include "i18n.h" |
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#include "ntlm.h" |
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#include "socket.h" |
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|
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#include <string.h> |
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|
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int ntlm_helper(int sock, struct query *ctl, const char *proto) |
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{ |
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/* |
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* NTLM support by Grant Edwards. |
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* |
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* Handle MS-Exchange NTLM authentication method. This is the same |
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* as the NTLM auth used by Samba for SMB related services. We just |
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* encode the packets in base64 instead of sending them out via a |
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* network interface. |
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* |
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* Much source (ntlm.h, smb*.c smb*.h) was borrowed from Samba. |
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*/ |
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tSmbNtlmAuthRequest request; |
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tSmbNtlmAuthChallenge challenge; |
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tSmbNtlmAuthResponse response; |
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|
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char msgbuf[2048]; |
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int result; |
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|
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if ((result = gen_recv(sock, msgbuf, sizeof msgbuf))) |
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return result; |
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|
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if (msgbuf[0] != '+' && strspn(msgbuf+1, " \t") < strlen(msgbuf+1)) { |
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if (outlevel >= O_VERBOSE) { |
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report(stdout, GT_("Warning: received malformed challenge to \"AUTH(ENTICATE) NTLM\"!\n")); |
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} |
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result = PS_AUTHFAIL; |
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goto cancelfail; |
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} |
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|
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buildSmbNtlmAuthRequest(&request,ctl->remotename,NULL); |
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|
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if (outlevel >= O_DEBUG) |
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dumpSmbNtlmAuthRequest(stdout, &request); |
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|
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memset(msgbuf,0,sizeof msgbuf); |
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to64frombits (msgbuf, &request, SmbLength(&request)); |
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|
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if (outlevel >= O_MONITOR) |
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report(stdout, "%s> %s\n", proto, msgbuf); |
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|
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strcat(msgbuf,"\r\n"); |
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SockWrite (sock, msgbuf, strlen (msgbuf)); |
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|
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if ((result = gen_recv(sock, msgbuf, sizeof msgbuf))) |
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goto cancelfail; |
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|
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(void)from64tobits (&challenge, msgbuf, sizeof(challenge)); |
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|
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if (outlevel >= O_DEBUG) |
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dumpSmbNtlmAuthChallenge(stdout, &challenge); |
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|
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buildSmbNtlmAuthResponse(&challenge, &response,ctl->remotename,ctl->password); |
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|
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if (outlevel >= O_DEBUG) |
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dumpSmbNtlmAuthResponse(stdout, &response); |
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|
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memset(msgbuf,0,sizeof msgbuf); |
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to64frombits (msgbuf, &response, SmbLength(&response)); |
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|
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if (outlevel >= O_MONITOR) |
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report(stdout, "%s> %s\n", proto, msgbuf); |
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|
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strcat(msgbuf,"\r\n"); |
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SockWrite (sock, msgbuf, strlen (msgbuf)); |
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|
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return PS_SUCCESS; |
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|
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cancelfail: /* cancel authentication and return failure */ |
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{ |
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if (outlevel >= O_MONITOR) |
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report(stdout, "%s> *\n", proto); |
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SockWrite(sock, "*\r\n", 3); |
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return result; |
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} |
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} |
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|
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#endif /* NTLM_ENABLE */ |
