Add m-esr52 at 52.6.0

1 files changed, 261 insertions, 0 deletions

diff --git a/security/nss/lib/ckfw/builtins/bfind.c b/security/nss/lib/ckfw/builtins/bfind.c
new file mode 100644
index 000000000..3e5da1a55
--- /dev/null
+++ b/security/nss/lib/ckfw/builtins/bfind.c
@@ -0,0 +1,261 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef BUILTINS_H
+#include "builtins.h"
+#endif /* BUILTINS_H */
+
+/*
+ * builtins/find.c
+ *
+ * This file implements the NSSCKMDFindObjects object for the
+ * "builtin objects" cryptoki module.
+ */
+
+struct builtinsFOStr {
+    NSSArena *arena;
+    CK_ULONG n;
+    CK_ULONG i;
+    builtinsInternalObject **objs;
+};
+
+static void
+builtins_mdFindObjects_Final(
+    NSSCKMDFindObjects *mdFindObjects,
+    NSSCKFWFindObjects *fwFindObjects,
+    NSSCKMDSession *mdSession,
+    NSSCKFWSession *fwSession,
+    NSSCKMDToken *mdToken,
+    NSSCKFWToken *fwToken,
+    NSSCKMDInstance *mdInstance,
+    NSSCKFWInstance *fwInstance)
+{
+    struct builtinsFOStr *fo = (struct builtinsFOStr *)mdFindObjects->etc;
+    NSSArena *arena = fo->arena;
+
+    nss_ZFreeIf(fo->objs);
+    nss_ZFreeIf(fo);
+    nss_ZFreeIf(mdFindObjects);
+    if ((NSSArena *)NULL != arena) {
+        NSSArena_Destroy(arena);
+    }
+
+    return;
+}
+
+static NSSCKMDObject *
+builtins_mdFindObjects_Next(
+    NSSCKMDFindObjects *mdFindObjects,
+    NSSCKFWFindObjects *fwFindObjects,
+    NSSCKMDSession *mdSession,
+    NSSCKFWSession *fwSession,
+    NSSCKMDToken *mdToken,
+    NSSCKFWToken *fwToken,
+    NSSCKMDInstance *mdInstance,
+    NSSCKFWInstance *fwInstance,
+    NSSArena *arena,
+    CK_RV *pError)
+{
+    struct builtinsFOStr *fo = (struct builtinsFOStr *)mdFindObjects->etc;
+    builtinsInternalObject *io;
+
+    if (fo->i == fo->n) {
+        *pError = CKR_OK;
+        return (NSSCKMDObject *)NULL;
+    }
+
+    io = fo->objs[fo->i];
+    fo->i++;
+
+    return nss_builtins_CreateMDObject(arena, io, pError);
+}
+
+static int
+builtins_derUnwrapInt(unsigned char *src, int size, unsigned char **dest)
+{
+    unsigned char *start = src;
+    int len = 0;
+
+    if (*src++ != 2) {
+        return 0;
+    }
+    len = *src++;
+    if (len & 0x80) {
+        int count = len & 0x7f;
+        len = 0;
+
+        if (count + 2 > size) {
+            return 0;
+        }
+        while (count-- > 0) {
+            len = (len << 8) | *src++;
+        }
+    }
+    if (len + (src - start) != size) {
+        return 0;
+    }
+    *dest = src;
+    return len;
+}
+
+static CK_BBOOL
+builtins_attrmatch(
+    CK_ATTRIBUTE_PTR a,
+    const NSSItem *b)
+{
+    PRBool prb;
+
+    if (a->ulValueLen != b->size) {
+        /* match a decoded serial number */
+        if ((a->type == CKA_SERIAL_NUMBER) && (a->ulValueLen < b->size)) {
+            int len;
+            unsigned char *data = NULL;
+
+            len = builtins_derUnwrapInt(b->data, b->size, &data);
+            if (data &&
+                (len == a->ulValueLen) &&
+                nsslibc_memequal(a->pValue, data, len, (PRStatus *)NULL)) {
+                return CK_TRUE;
+            }
+        }
+        return CK_FALSE;
+    }
+
+    prb = nsslibc_memequal(a->pValue, b->data, b->size, (PRStatus *)NULL);
+
+    if (PR_TRUE == prb) {
+        return CK_TRUE;
+    } else {
+        return CK_FALSE;
+    }
+}
+
+static CK_BBOOL
+builtins_match(
+    CK_ATTRIBUTE_PTR pTemplate,
+    CK_ULONG ulAttributeCount,
+    builtinsInternalObject *o)
+{
+    CK_ULONG i;
+
+    for (i = 0; i < ulAttributeCount; i++) {
+        CK_ULONG j;
+
+        for (j = 0; j < o->n; j++) {
+            if (o->types[j] == pTemplate[i].type) {
+                if (CK_FALSE == builtins_attrmatch(&pTemplate[i], &o->items[j])) {
+                    return CK_FALSE;
+                } else {
+                    break;
+                }
+            }
+        }
+
+        if (j == o->n) {
+            /* Loop ran to the end: no matching attribute */
+            return CK_FALSE;
+        }
+    }
+
+    /* Every attribute passed */
+    return CK_TRUE;
+}
+
+NSS_IMPLEMENT NSSCKMDFindObjects *
+nss_builtins_FindObjectsInit(
+    NSSCKFWSession *fwSession,
+    CK_ATTRIBUTE_PTR pTemplate,
+    CK_ULONG ulAttributeCount,
+    CK_RV *pError)
+{
+    /* This could be made more efficient.  I'm rather rushed. */
+    NSSArena *arena;
+    NSSCKMDFindObjects *rv = (NSSCKMDFindObjects *)NULL;
+    struct builtinsFOStr *fo = (struct builtinsFOStr *)NULL;
+
+/*
+   * 99% of the time we get 0 or 1 matches. So we start with a small
+   * stack-allocated array to hold the matches and switch to a heap-allocated
+   * array later if the number of matches exceeds STACK_BUF_LENGTH.
+   */
+#define STACK_BUF_LENGTH 1
+    builtinsInternalObject *stackTemp[STACK_BUF_LENGTH];
+    builtinsInternalObject **temp = stackTemp;
+    PRBool tempIsHeapAllocated = PR_FALSE;
+    PRUint32 i;
+
+    arena = NSSArena_Create();
+    if ((NSSArena *)NULL == arena) {
+        goto loser;
+    }
+
+    rv = nss_ZNEW(arena, NSSCKMDFindObjects);
+    if ((NSSCKMDFindObjects *)NULL == rv) {
+        *pError = CKR_HOST_MEMORY;
+        goto loser;
+    }
+
+    fo = nss_ZNEW(arena, struct builtinsFOStr);
+    if ((struct builtinsFOStr *)NULL == fo) {
+        *pError = CKR_HOST_MEMORY;
+        goto loser;
+    }
+
+    fo->arena = arena;
+    /* fo->n and fo->i are already zero */
+
+    rv->etc = (void *)fo;
+    rv->Final = builtins_mdFindObjects_Final;
+    rv->Next = builtins_mdFindObjects_Next;
+    rv->null = (void *)NULL;
+
+    for (i = 0; i < nss_builtins_nObjects; i++) {
+        builtinsInternalObject *o = (builtinsInternalObject *)&nss_builtins_data[i];
+
+        if (CK_TRUE == builtins_match(pTemplate, ulAttributeCount, o)) {
+            if (fo->n == STACK_BUF_LENGTH) {
+                /* Switch from the small stack array to a heap-allocated array large
+         * enough to handle matches in all remaining cases. */
+                temp = nss_ZNEWARRAY((NSSArena *)NULL, builtinsInternalObject *,
+                                     fo->n + nss_builtins_nObjects - i);
+                if ((builtinsInternalObject **)NULL == temp) {
+                    *pError =
+                        CKR_HOST_MEMORY;
+                    goto loser;
+                }
+                tempIsHeapAllocated = PR_TRUE;
+                (void)nsslibc_memcpy(temp, stackTemp,
+                                     sizeof(builtinsInternalObject *) * fo->n);
+            }
+
+            temp[fo->n] = o;
+            fo->n++;
+        }
+    }
+
+    fo->objs = nss_ZNEWARRAY(arena, builtinsInternalObject *, fo->n);
+    if ((builtinsInternalObject **)NULL == fo->objs) {
+        *pError = CKR_HOST_MEMORY;
+        goto loser;
+    }
+
+    (void)nsslibc_memcpy(fo->objs, temp, sizeof(builtinsInternalObject *) * fo->n);
+    if (tempIsHeapAllocated) {
+        nss_ZFreeIf(temp);
+        temp = (builtinsInternalObject **)NULL;
+    }
+
+    return rv;
+
+loser:
+    if (tempIsHeapAllocated) {
+        nss_ZFreeIf(temp);
+    }
+    nss_ZFreeIf(fo);
+    nss_ZFreeIf(rv);
+    if ((NSSArena *)NULL != arena) {
+        NSSArena_Destroy(arena);
+    }
+    return (NSSCKMDFindObjects *)NULL;
+}