Merge remote-tracking branch 'alon/pull-libcacard.afe' into staging

This commit is contained in:
Anthony Liguori 2011-07-29 09:43:36 -05:00
commit 23487df884
4 changed files with 224 additions and 78 deletions

5
configure vendored
View File

@ -146,6 +146,7 @@ datadir="\${prefix}/share/qemu"
docdir="\${prefix}/share/doc/qemu"
bindir="\${prefix}/bin"
libdir="\${prefix}/lib"
includedir="\${prefix}/include"
sysconfdir="\${prefix}/etc"
confsuffix="/qemu"
slirp="yes"
@ -544,6 +545,8 @@ for opt do
;;
--libdir=*) libdir="$optarg"
;;
--includedir=*) includedir="$optarg"
;;
--datadir=*) datadir="$optarg"
;;
--docdir=*) docdir="$optarg"
@ -2594,6 +2597,7 @@ echo "Install prefix $prefix"
echo "BIOS directory `eval echo $datadir`"
echo "binary directory `eval echo $bindir`"
echo "library directory `eval echo $libdir`"
echo "include directory `eval echo $includedir`"
echo "config directory `eval echo $sysconfdir`"
if test "$mingw32" = "no" ; then
echo "Manual directory `eval echo $mandir`"
@ -2689,6 +2693,7 @@ echo all: >> $config_host_mak
echo "prefix=$prefix" >> $config_host_mak
echo "bindir=$bindir" >> $config_host_mak
echo "libdir=$libdir" >> $config_host_mak
echo "includedir=$includedir" >> $config_host_mak
echo "mandir=$mandir" >> $config_host_mak
echo "datadir=$datadir" >> $config_host_mak
echo "sysconfdir=$sysconfdir" >> $config_host_mak

View File

@ -2,7 +2,10 @@
-include $(SRC_PATH)/Makefile.objs
-include $(SRC_PATH)/rules.mak
$(call set-vpath, $(SRC_PATH):$(SRC_PATH)/libcacard)
libcacard_srcpath=$(SRC_PATH)/libcacard
libcacard_includedir=$(includedir)/cacard
$(call set-vpath, $(SRC_PATH):$(libcacard_srcpath))
# objects linked against normal qemu binaries, not compiled with libtool
QEMU_OBJS=$(addprefix ../,$(oslib-obj-y) qemu-malloc.o qemu-timer-common.o $(trace-obj-y))
@ -18,7 +21,7 @@ vscclient: $(libcacard-y) $(QEMU_OBJS) vscclient.o
$(call quiet-command,$(CC) $(libcacard_libs) -lrt -o $@ $^," LINK $@")
clean:
rm -f *.o */*.o *.d */*.d *.a */*.a *~ */*~ vscclient *.lo .libs/* *.la
rm -f *.o */*.o *.d */*.d *.a */*.a *~ */*~ vscclient *.lo .libs/* *.la *.pc
rm -Rf .libs
all: vscclient
@ -36,7 +39,25 @@ else
libcacard.la: $(libcacard.lib-y) $(QEMU_OBJS_LIB)
$(call quiet-command,libtool --mode=link --quiet --tag=CC $(CC) $(libcacard_libs) -lrt -rpath $(libdir) -o $@ $^," lt LINK $@")
install-libcacard: libcacard.la
libcacard.pc: $(libcacard_srcpath)/libcacard.pc.in
sed -e 's|@LIBDIR@|$(libdir)|' \
-e 's|@INCLUDEDIR@|$(libcacard_includedir)|' \
-e 's|@VERSION@|$(shell cat $(SRC_PATH)/VERSION)|' \
-e 's|@PREFIX@|$(prefix)|' \
< $(libcacard_srcpath)/libcacard.pc.in > libcacard.pc
.PHONY: install-libcacard
install-libcacard: libcacard.pc libcacard.la vscclient
$(INSTALL_DIR) "$(DESTDIR)$(libdir)"
$(INSTALL_DIR) "$(DESTDIR)$(libdir)/pkgconfig"
$(INSTALL_DIR) "$(DESTDIR)$(libcacard_includedir)"
$(INSTALL_DIR) "$(DESTDIR)$(bindir)"
libtool --mode=install $(INSTALL_PROG) vscclient "$(DESTDIR)$(bindir)"
libtool --mode=install $(INSTALL_PROG) libcacard.la "$(DESTDIR)$(libdir)"
libtool --mode=install $(INSTALL_PROG) libcacard.pc "$(DESTDIR)$(libdir)/pkgconfig"
for inc in *.h; do \
libtool --mode=install $(INSTALL_PROG) $(libcacard_srcpath)/$$inc "$(DESTDIR)$(libcacard_includedir)"; \
done
endif

13
libcacard/libcacard.pc.in Normal file
View File

@ -0,0 +1,13 @@
prefix=@PREFIX@
exec_prefix=${prefix}
libdir=@LIBDIR@
includedir=@INCLUDEDIR@
Name: cacard
Description: CA Card library
Version: @VERSION@
Requires: nss
Libs: -L${libdir} -lcacard
Libs.private:
Cflags: -I${includedir}

View File

@ -33,10 +33,17 @@
#include "vreader.h"
#include "vevent.h"
typedef enum {
VCardEmulUnknown = -1,
VCardEmulFalse = 0,
VCardEmulTrue = 1
} VCardEmulTriState;
struct VCardKeyStruct {
CERTCertificate *cert;
PK11SlotInfo *slot;
SECKEYPrivateKey *key;
VCardEmulTriState failedX509;
};
@ -140,6 +147,7 @@ vcard_emul_make_key(PK11SlotInfo *slot, CERTCertificate *cert)
/* NOTE: the cert is a temp cert, not necessarily the cert in the token,
* use the DER version of this function */
key->key = PK11_FindKeyByDERCert(slot, cert, NULL);
key->failedX509 = VCardEmulUnknown;
return key;
}
@ -208,13 +216,23 @@ vcard_emul_rsa_op(VCard *card, VCardKey *key,
{
SECKEYPrivateKey *priv_key;
unsigned signature_len;
PK11SlotInfo *slot;
SECStatus rv;
unsigned char buf[2048];
unsigned char *bp = NULL;
int pad_len;
vcard_7816_status_t ret = VCARD7816_STATUS_SUCCESS;
if ((!nss_emul_init) || (key == NULL)) {
/* couldn't get the key, indicate that we aren't logged in */
return VCARD7816_STATUS_ERROR_CONDITION_NOT_SATISFIED;
}
priv_key = vcard_emul_get_nss_key(key);
if (priv_key == NULL) {
/* couldn't get the key, indicate that we aren't logged in */
return VCARD7816_STATUS_ERROR_CONDITION_NOT_SATISFIED;
}
slot = vcard_emul_card_get_slot(card);
/*
* this is only true of the rsa signature
@ -223,13 +241,116 @@ vcard_emul_rsa_op(VCard *card, VCardKey *key,
if (buffer_size != signature_len) {
return VCARD7816_STATUS_ERROR_DATA_INVALID;
}
rv = PK11_PrivDecryptRaw(priv_key, buffer, &signature_len, signature_len,
buffer, buffer_size);
if (rv != SECSuccess) {
return vcard_emul_map_error(PORT_GetError());
/* be able to handle larger keys if necessariy */
bp = &buf[0];
if (sizeof(buf) < signature_len) {
bp = qemu_malloc(signature_len);
}
assert(buffer_size == signature_len);
return VCARD7816_STATUS_SUCCESS;
/*
* do the raw operations. Some tokens claim to do CKM_RSA_X_509, but then
* choke when they try to do the actual operations. Try to detect
* those cases and treat them as if the token didn't claim support for
* X_509.
*/
if (key->failedX509 != VCardEmulTrue
&& PK11_DoesMechanism(slot, CKM_RSA_X_509)) {
rv = PK11_PrivDecryptRaw(priv_key, bp, &signature_len, signature_len,
buffer, buffer_size);
if (rv == SECSuccess) {
assert(buffer_size == signature_len);
memcpy(buffer, bp, signature_len);
key->failedX509 = VCardEmulFalse;
goto cleanup;
}
/*
* we've had a successful X509 operation, this failure must be
* somethine else
*/
if (key->failedX509 == VCardEmulFalse) {
ret = vcard_emul_map_error(PORT_GetError());
goto cleanup;
}
/*
* key->failedX509 must be Unknown at this point, try the
* non-x_509 case
*/
}
/* token does not support CKM_RSA_X509, emulate that with CKM_RSA_PKCS */
/* is this a PKCS #1 formatted signature? */
if ((buffer[0] == 0) && (buffer[1] == 1)) {
int i;
for (i = 2; i < buffer_size; i++) {
/* rsa signature pad */
if (buffer[i] != 0xff) {
break;
}
}
if ((i < buffer_size) && (buffer[i] == 0)) {
/* yes, we have a properly formated PKCS #1 signature */
/*
* NOTE: even if we accidentally got an encrypt buffer, which
* through shear luck started with 00, 01, ff, 00, it won't matter
* because the resulting Sign operation will effectively decrypt
* the real buffer.
*/
SECItem signature;
SECItem hash;
i++;
hash.data = &buffer[i];
hash.len = buffer_size - i;
signature.data = bp;
signature.len = signature_len;
rv = PK11_Sign(priv_key, &signature, &hash);
if (rv != SECSuccess) {
ret = vcard_emul_map_error(PORT_GetError());
goto cleanup;
}
assert(buffer_size == signature.len);
memcpy(buffer, bp, signature.len);
/*
* we got here because either the X509 attempt failed, or the
* token couldn't do the X509 operation, in either case stay
* with the PKCS version for future operations on this key
*/
key->failedX509 = VCardEmulTrue;
goto cleanup;
}
}
pad_len = buffer_size - signature_len;
assert(pad_len < 4);
/*
* OK now we've decrypted the payload, package it up in PKCS #1 for the
* upper layer.
*/
buffer[0] = 0;
buffer[1] = 2; /* RSA_encrypt */
pad_len -= 3; /* format is 0 || 2 || pad || 0 || data */
/*
* padding for PKCS #1 encrypted data is a string of random bytes. The
* random butes protect against potential decryption attacks against RSA.
* Since PrivDecrypt has already stripped those bytes, we can't reconstruct
* them. This shouldn't matter to the upper level code which should just
* strip this code out anyway, so We'll pad with a constant 3.
*/
memset(&buffer[2], 0x03, pad_len);
pad_len += 2; /* index to the end of the pad */
buffer[pad_len] = 0;
pad_len++; /* index to the start of the data */
memcpy(&buffer[pad_len], bp, signature_len);
/*
* we got here because either the X509 attempt failed, or the
* token couldn't do the X509 operation, in either case stay
* with the PKCS version for future operations on this key
*/
key->failedX509 = VCardEmulTrue;
cleanup:
if (bp != buf) {
qemu_free(bp);
}
return ret;
}
/*
@ -476,6 +597,7 @@ vcard_emul_mirror_card(VReader *vreader)
VCardKey **keys;
PK11SlotInfo *slot;
PRBool ret;
VCard *card;
slot = vcard_emul_reader_get_slot(vreader);
if (slot == NULL) {
@ -535,7 +657,12 @@ vcard_emul_mirror_card(VReader *vreader)
}
/* now create the card */
return vcard_emul_make_card(vreader, certs, cert_len, keys, cert_count);
card = vcard_emul_make_card(vreader, certs, cert_len, keys, cert_count);
qemu_free(certs);
qemu_free(cert_len);
qemu_free(keys);
return card;
}
static VCardEmulType default_card_type = VCARD_EMUL_NONE;
@ -820,6 +947,9 @@ vcard_emul_init(const VCardEmulOptions *options)
vreader_free(vreader);
has_readers = PR_TRUE;
}
qemu_free(certs);
qemu_free(cert_len);
qemu_free(keys);
}
/* if we aren't suppose to use hw, skip looking up hardware tokens */
@ -925,17 +1055,6 @@ vcard_emul_replay_insertion_events(void)
/*
* Silly little functions to help parsing our argument string
*/
static char *
copy_string(const char *str, int str_len)
{
char *new_str;
new_str = qemu_malloc(str_len+1);
memcpy(new_str, str, str_len);
new_str[str_len] = 0;
return new_str;
}
static int
count_tokens(const char *str, char token, char token_end)
{
@ -975,13 +1094,31 @@ find_blank(const char *str)
static VCardEmulOptions options;
#define READER_STEP 4
/* Expects "args" to be at the beginning of a token (ie right after the ','
* ending the previous token), and puts the next token start in "token",
* and its length in "token_length". "token" will not be nul-terminated.
* After calling the macro, "args" will be advanced to the beginning of
* the next token.
* This macro may call continue or break.
*/
#define NEXT_TOKEN(token) \
(token) = args; \
args = strpbrk(args, ",)"); \
if (*args == 0) { \
break; \
} \
if (*args == ')') { \
args++; \
continue; \
} \
(token##_length) = args - (token); \
args = strip(args+1);
VCardEmulOptions *
vcard_emul_options(const char *args)
{
int reader_count = 0;
VCardEmulOptions *opts;
char type_str[100];
int type_len;
/* Allow the future use of allocating the options structure on the fly */
memcpy(&options, &default_options, sizeof(options));
@ -996,63 +1133,32 @@ vcard_emul_options(const char *args)
* cert_2,cert_3...) */
if (strncmp(args, "soft=", 5) == 0) {
const char *name;
size_t name_length;
const char *vname;
size_t vname_length;
const char *type_params;
size_t type_params_length;
char type_str[100];
VCardEmulType type;
int name_length, vname_length, type_params_length, count, i;
int count, i;
VirtualReaderOptions *vreaderOpt = NULL;
args = strip(args + 5);
if (*args != '(') {
continue;
}
name = args;
args = strpbrk(args + 1, ",)");
if (*args == 0) {
break;
}
if (*args == ')') {
args++;
continue;
}
args = strip(args+1);
name_length = args - name - 2;
vname = args;
args = strpbrk(args + 1, ",)");
if (*args == 0) {
break;
}
if (*args == ')') {
args++;
continue;
}
vname_length = args - name - 2;
args = strip(args+1);
type_len = strpbrk(args, ",)") - args;
assert(sizeof(type_str) > type_len);
strncpy(type_str, args, type_len);
type_str[type_len] = 0;
NEXT_TOKEN(name)
NEXT_TOKEN(vname)
NEXT_TOKEN(type_params)
type_params_length = MIN(type_params_length, sizeof(type_str)-1);
strncpy(type_str, type_params, type_params_length);
type_str[type_params_length] = 0;
type = vcard_emul_type_from_string(type_str);
args = strpbrk(args, ",)");
if (*args == 0) {
break;
}
if (*args == ')') {
args++;
continue;
}
args = strip(args++);
type_params = args;
args = strpbrk(args + 1, ",)");
if (*args == 0) {
break;
}
if (*args == ')') {
args++;
continue;
}
type_params_length = args - name;
args = strip(args++);
NEXT_TOKEN(type_params)
if (*args == 0) {
break;
}
@ -1067,18 +1173,19 @@ vcard_emul_options(const char *args)
}
opts->vreader = vreaderOpt;
vreaderOpt = &vreaderOpt[opts->vreader_count];
vreaderOpt->name = copy_string(name, name_length);
vreaderOpt->vname = copy_string(vname, vname_length);
vreaderOpt->name = qemu_strndup(name, name_length);
vreaderOpt->vname = qemu_strndup(vname, vname_length);
vreaderOpt->card_type = type;
vreaderOpt->type_params =
copy_string(type_params, type_params_length);
count = count_tokens(args, ',', ')');
qemu_strndup(type_params, type_params_length);
count = count_tokens(args, ',', ')') + 1;
vreaderOpt->cert_count = count;
vreaderOpt->cert_name = (char **)qemu_malloc(count*sizeof(char *));
for (i = 0; i < count; i++) {
const char *cert = args + 1;
args = strpbrk(args + 1, ",)");
vreaderOpt->cert_name[i] = copy_string(cert, args - cert);
const char *cert = args;
args = strpbrk(args, ",)");
vreaderOpt->cert_name[i] = qemu_strndup(cert, args - cert);
args = strip(args+1);
}
if (*args == ')') {
args++;
@ -1104,7 +1211,7 @@ vcard_emul_options(const char *args)
args = strip(args+10);
params = args;
args = find_blank(args);
opts->hw_type_params = copy_string(params, args-params);
opts->hw_type_params = qemu_strndup(params, args-params);
/* db="/data/base/path" */
} else if (strncmp(args, "db=", 3) == 0) {
const char *db;
@ -1115,7 +1222,7 @@ vcard_emul_options(const char *args)
args++;
db = args;
args = strpbrk(args, "\"\n");
opts->nss_db = copy_string(db, args-db);
opts->nss_db = qemu_strndup(db, args-db);
if (*args != 0) {
args++;
}