* This function is used to read generic data objects presented by
the underlying card, if available. It can provide some structures
that we are not able to emulate in softeare card.
Signed-off-by: Jakub Jelen <jjelen@xxxxxxxxxx>
Reviewed-by: Robert Relyea <rrelyea@xxxxxxxxxx>
---
docs/libcacard.txt | 8 +++++++
src/libcacard.syms | 1 +
src/vcard_emul.h | 4 ++++
src/vcard_emul_nss.c | 53 ++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 66 insertions(+)
diff --git a/docs/libcacard.txt b/docs/libcacard.txt
index 324dcb8..f421054 100644
--- a/docs/libcacard.txt
+++ b/docs/libcacard.txt
@@ -354,6 +354,14 @@ and applet.
This function returns the size of RSA key in bits.
+ unsigned char *vcard_emul_read_object(VCard *card,
+ const unsigned char *label,
+ unsigned int *ret_len);
+
+ This function reads generic data from underlying smart card by the label,
+ if avaialble.
+
+
The sample card type emulator is found in cac.c. It implements the cac specific
applets. Only those applets needed by the coolkey pkcs#11 driver on the guest
have been implemented. To support the full range CAC middleware, a complete CAC
diff --git a/src/libcacard.syms b/src/libcacard.syms
index 04c0f89..b073fb8 100644
--- a/src/libcacard.syms
+++ b/src/libcacard.syms
@@ -21,6 +21,7 @@ vcard_emul_rsa_bits
vcard_emul_type_from_string
vcard_emul_type_select
vcard_emul_usage
+vcard_emul_read_object
vcard_find_applet
vcard_free
vcard_get_atr
diff --git a/src/vcard_emul.h b/src/vcard_emul.h
index ec64605..cb7fcbb 100644
--- a/src/vcard_emul.h
+++ b/src/vcard_emul.h
@@ -64,4 +64,8 @@ VCardEmulOptions *vcard_emul_options(const char *args);
VCardEmulError vcard_emul_init(const VCardEmulOptions *options);
void vcard_emul_replay_insertion_events(void);
void vcard_emul_usage(void);
+
+unsigned char *vcard_emul_read_object(VCard *card, const char *label,
+ unsigned int *ret_len);
+
#endif
diff --git a/src/vcard_emul_nss.c b/src/vcard_emul_nss.c
index e213d7f..e02426b 100644
--- a/src/vcard_emul_nss.c
+++ b/src/vcard_emul_nss.c
@@ -1327,6 +1327,59 @@ vcard_emul_options(const char *args)
return opts;
}
+unsigned char *
+vcard_emul_read_object(VCard *card, const char *label,
+ unsigned int *ret_len)
+{
+ PK11SlotInfo *slot;
+ PK11GenericObject *obj, *firstObj, *myObj = NULL;
+ SECItem result;
+ SECStatus r;
+
+ slot = vcard_emul_card_get_slot(card);
+
+ firstObj = PK11_FindGenericObjects(slot, CKO_DATA);
+ fprintf(stderr, "%s: Search for generic objects: got %p", __func__, firstObj);
+ for (obj = firstObj; obj; obj = PK11_GetNextGenericObject(obj)) {
+ int found = 0;
+ r = PK11_ReadRawAttribute(PK11_TypeGeneric, obj,
+ CKA_LABEL, &result);
+ if (r != SECSuccess) {
+ PK11_DestroyGenericObjects(firstObj);
+ return NULL;
+ }
+
+ if (strlen(label) == result.len
+ && memcmp(label, result.data, result.len) == 0)
+ found = 1;
+
+ free(result.data);
+ result.data = NULL;
+
+ if (found) {
+ if (obj == firstObj)
+ firstObj = obj;
+ PK11_UnlinkGenericObject(obj);
+ myObj = obj;
+ break;
+ }
+ }
+ PK11_DestroyGenericObjects(firstObj);
+
+ if (!myObj)
+ return NULL;
+
+ r = PK11_ReadRawAttribute(PK11_TypeGeneric, myObj,
+ CKA_VALUE, &result);
+ PK11_DestroyGenericObject(myObj);
+ if (r != SECSuccess)
+ return NULL;
+
+ *ret_len = result.len;
+ return result.data;
+
+}
+
void
vcard_emul_usage(void)
{
--
2.17.1
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