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      1 
      2 /*
      3  * Licensed Materials - Property of IBM
      4  *
      5  * trousers - An open source TCG Software Stack
      6  *
      7  * (C) Copyright International Business Machines Corp. 2004-2006
      8  *
      9  */
     10 
     11 
     12 #include <stdlib.h>
     13 #include <stdio.h>
     14 #include <syslog.h>
     15 #include <signal.h>
     16 #include <string.h>
     17 #include <errno.h>
     18 #include <unistd.h>
     19 
     20 #include "trousers/tss.h"
     21 #include "tcs_tsp.h"
     22 #include "tcs_utils.h"
     23 #include "tddl.h"
     24 #include "req_mgr.h"
     25 #include "tcslog.h"
     26 
     27 static struct tpm_req_mgr *trm;
     28 
     29 #ifdef TSS_DEBUG
     30 #define TSS_TPM_DEBUG
     31 #endif
     32 
     33 TSS_RESULT
     34 req_mgr_submit_req(BYTE *blob)
     35 {
     36 	TSS_RESULT result;
     37 	BYTE loc_buf[TSS_TPM_TXBLOB_SIZE];
     38 	UINT32 size = TSS_TPM_TXBLOB_SIZE;
     39 	UINT32 retry = TSS_REQ_MGR_MAX_RETRIES;
     40 
     41 	MUTEX_LOCK(trm->queue_lock);
     42 
     43 #ifdef TSS_TPM_DEBUG
     44 	LogBlobData("To TPM:", Decode_UINT32(&blob[2]), blob);
     45 #endif
     46 
     47 	do {
     48 		result = Tddli_TransmitData(blob, Decode_UINT32(&blob[2]), loc_buf, &size);
     49 	} while (!result && (Decode_UINT32(&loc_buf[6]) == TCPA_E_RETRY) && --retry);
     50 
     51 	if (!result)
     52 		memcpy(blob, loc_buf, Decode_UINT32(&loc_buf[2]));
     53 
     54 #ifdef TSS_TPM_DEBUG
     55 	LogBlobData("From TPM:", size, loc_buf);
     56 #endif
     57 
     58 	MUTEX_UNLOCK(trm->queue_lock);
     59 
     60 	return result;
     61 }
     62 
     63 TSS_RESULT
     64 req_mgr_init()
     65 {
     66 	if ((trm = calloc(1, sizeof(struct tpm_req_mgr))) == NULL) {
     67 		LogError("malloc of %zd bytes failed.", sizeof(struct tpm_req_mgr));
     68 		return TSS_E_OUTOFMEMORY;
     69 	}
     70 
     71 	MUTEX_INIT(trm->queue_lock);
     72 
     73 	return Tddli_Open();
     74 }
     75 
     76 TSS_RESULT
     77 req_mgr_final()
     78 {
     79 	free(trm);
     80 
     81 	return Tddli_Close();
     82 }
     83 
     84