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fixed potential hasher problem in IMA template hash

This commit is contained in:
Andreas Steffen 2012-07-16 22:44:45 +02:00
parent 915bceb4c7
commit c8ff69402b
1 changed files with 11 additions and 3 deletions
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14
src/libpts/plugins/imv_attestation/attest_db.c
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@ -1144,6 +1144,11 @@ METHOD(attest_db_t, add, bool,
ima = TRUE;
this->algo = PTS_MEAS_ALGO_SHA1;
hasher = lib->crypto->create_hasher(lib->crypto, HASH_SHA1);
if (!hasher)
{
printf("could not create hasher\n");
return FALSE;
}
}
pathname = this->did ? this->dir : this->file;
@ -1207,9 +1212,12 @@ METHOD(attest_db_t, add, bool,
strncpy(ima_buffer, filename, IMA_MAX_NAME_LEN);
ima_buffer[IMA_MAX_NAME_LEN] = '\0';
ima_template = chunk_create(ima_buffer, sizeof(ima_buffer));
hasher->get_hash(hasher, measurement, NULL);
hasher->get_hash(hasher, ima_template, measurement.ptr);
if (!hasher->get_hash(hasher, measurement, NULL) ||
!hasher->get_hash(hasher, ima_template, measurement.ptr))
{
printf("could not compute IMA template hash\n");
break;
}
if (!insert_file_hash(this, PTS_MEAS_ALGO_SHA1_IMA, measurement,
fid, did, TRUE, &ima_hashes_added))
{