static int aff_vstat(AFFILE *af,struct af_vnode_info *vni)
{
memset(vni,0,sizeof(*vni)); // clear it
vni->imagesize = af->image_size; // we can just return this
vni->pagesize = af->image_pagesize;
vni->supports_compression = 1;
vni->has_pages = 1;
vni->supports_metadata = 1;
vni->cannot_decrypt = af_cannot_decrypt(af) ? 1 : 0;
/* Check for an encrypted page */
if(af->toc){
for(int i=0;i<af->toc_count;i++){
if(af->toc[i].name){
bool is_page = false;
vni->segment_count_total++;
if(af_segname_page_number(af->toc[i].name)>=0){
vni->page_count_total++;
is_page = true;
}
if(af_is_encrypted_segment(af->toc[i].name)){
vni->segment_count_encrypted++;
if(is_page) vni->page_count_encrypted++;
}
if(af_is_signature_segment(af->toc[i].name)){
vni->segment_count_signed++;
}
}
}
}
return 0;
}
TSK_IMG_INFO *
aff_open(const TSK_TCHAR * const images[], unsigned int a_ssize)
{
IMG_AFF_INFO *aff_info;
TSK_IMG_INFO *img_info;
int type;
char *image;
#ifdef TSK_WIN32
// convert wchar_t* image path to char* to conform to
// the AFFLIB API
UTF16 *utf16 = (UTF16 *)images[0];
size_t ilen = wcslen(utf16);
size_t olen = ilen*4 + 1;
UTF8 *utf8 = (UTF8 *) tsk_malloc(olen);
image = (char *) utf8;
if ( image == NULL )
return NULL;
TSKConversionResult retval =
tsk_UTF16toUTF8_lclorder( (const UTF16 **) &utf16,
&utf16[ilen], &utf8,
&utf8[olen], TSKlenientConversion );
*utf8 = '\0';
if (retval != TSKconversionOK) {
tsk_error_reset();
tsk_error_set_errno(TSK_ERR_FS_UNICODE);
tsk_error_set_errstr("aff_open file: %" PRIttocTSK
": Error converting path to UTF-8 %d\n",
images[0], retval);
free(image);
return NULL;
}
utf8 = (UTF8 *) image;
while ( *utf8 ) {
if ( *utf8 > 127 ) {
tsk_error_reset();
tsk_error_set_errno(TSK_ERR_FS_UNICODE);
tsk_error_set_errstr("aff_open file: %" PRIttocTSK
": Non-Latin paths are not supported for AFF images\n",
images[0]);
free(image);
return NULL;
}
utf8++;
}
#else
image = (char *) tsk_malloc( strlen(images[0])+1 );
if ( image == NULL )
return NULL;
strncpy(image, images[0], strlen(images[0])+1 );
#endif
if ((aff_info =
(IMG_AFF_INFO *) tsk_img_malloc(sizeof(IMG_AFF_INFO))) ==
NULL) {
free(image);
return NULL;
}
img_info = (TSK_IMG_INFO *) aff_info;
img_info->read = aff_read;
img_info->close = aff_close;
img_info->imgstat = aff_imgstat;
img_info->sector_size = 512;
if (a_ssize)
img_info->sector_size = a_ssize;
type = af_identify_file_type(image, 1);
if ((type == AF_IDENTIFY_ERR) || (type == AF_IDENTIFY_NOEXIST)) {
if (tsk_verbose) {
tsk_fprintf(stderr,
"aff_open: Error determining type of file: %" PRIttocTSK
"\n", images[0]);
perror("aff_open");
}
tsk_error_reset();
tsk_error_set_errno(TSK_ERR_IMG_OPEN);
tsk_error_set_errstr("aff_open file: %" PRIttocTSK
": Error checking type", images[0]);
tsk_img_free(aff_info);
free(image);
return NULL;
}
else if (type == AF_IDENTIFY_AFF) {
img_info->itype = TSK_IMG_TYPE_AFF_AFF;
}
else if (type == AF_IDENTIFY_AFD) {
img_info->itype = TSK_IMG_TYPE_AFF_AFD;
}
else if (type == AF_IDENTIFY_AFM) {
img_info->itype = TSK_IMG_TYPE_AFF_AFM;
}
else {
img_info->itype = TSK_IMG_TYPE_AFF_ANY;
}
aff_info->af_file = af_open(image, O_RDONLY | O_BINARY, 0);
if (!aff_info->af_file) {
// @@@ Need to check here if the open failed because of an incorrect password.
tsk_error_reset();
tsk_error_set_errno(TSK_ERR_IMG_OPEN);
tsk_error_set_errstr("aff_open file: %" PRIttocTSK
": Error opening - %s", images[0], strerror(errno));
tsk_img_free(aff_info);
if (tsk_verbose) {
tsk_fprintf(stderr, "Error opening AFF/AFD/AFM file\n");
perror("aff_open");
}
free(image);
return NULL;
}
// verify that a password was given and we can read encrypted data.
if (af_cannot_decrypt(aff_info->af_file)) {
tsk_error_reset();
tsk_error_set_errno(TSK_ERR_IMG_PASSWD);
tsk_error_set_errstr("aff_open file: %" PRIttocTSK, images[0]);
tsk_img_free(aff_info);
if (tsk_verbose) {
tsk_fprintf(stderr,
"Error opening AFF/AFD/AFM file (incorrect password)\n");
}
free(image);
return NULL;
}
aff_info->type = type;
img_info->size = af_imagesize(aff_info->af_file);
af_seek(aff_info->af_file, 0, SEEK_SET);
aff_info->seek_pos = 0;
free(image);
return img_info;
}
