Add m-esr52 at 52.6.0

1 files changed, 210 insertions, 0 deletions

diff --git a/security/nss/lib/smime/cmsdigdata.c b/security/nss/lib/smime/cmsdigdata.c
new file mode 100644
index 000000000..9ea22702e
--- /dev/null
+++ b/security/nss/lib/smime/cmsdigdata.c
@@ -0,0 +1,210 @@
+/* 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/. */
+
+/*
+ * CMS digestedData methods.
+ */
+
+#include "cmslocal.h"
+
+#include "secitem.h"
+#include "secasn1.h"
+#include "secoid.h"
+#include "secerr.h"
+
+/*
+ * NSS_CMSDigestedData_Create - create a digestedData object (presumably for encoding)
+ *
+ * version will be set by NSS_CMSDigestedData_Encode_BeforeStart
+ * digestAlg is passed as parameter
+ * contentInfo must be filled by the user
+ * digest will be calculated while encoding
+ */
+NSSCMSDigestedData *
+NSS_CMSDigestedData_Create(NSSCMSMessage *cmsg, SECAlgorithmID *digestalg)
+{
+    void *mark;
+    NSSCMSDigestedData *digd;
+    PLArenaPool *poolp;
+
+    poolp = cmsg->poolp;
+
+    mark = PORT_ArenaMark(poolp);
+
+    digd = (NSSCMSDigestedData *)PORT_ArenaZAlloc(poolp, sizeof(NSSCMSDigestedData));
+    if (digd == NULL)
+        goto loser;
+
+    digd->cmsg = cmsg;
+
+    if (SECOID_CopyAlgorithmID(poolp, &(digd->digestAlg), digestalg) != SECSuccess)
+        goto loser;
+
+    PORT_ArenaUnmark(poolp, mark);
+    return digd;
+
+loser:
+    PORT_ArenaRelease(poolp, mark);
+    return NULL;
+}
+
+/*
+ * NSS_CMSDigestedData_Destroy - destroy a digestedData object
+ */
+void
+NSS_CMSDigestedData_Destroy(NSSCMSDigestedData *digd)
+{
+    /* everything's in a pool, so don't worry about the storage */
+    NSS_CMSContentInfo_Destroy(&(digd->contentInfo));
+    return;
+}
+
+/*
+ * NSS_CMSDigestedData_GetContentInfo - return pointer to digestedData object's contentInfo
+ */
+NSSCMSContentInfo *
+NSS_CMSDigestedData_GetContentInfo(NSSCMSDigestedData *digd)
+{
+    return &(digd->contentInfo);
+}
+
+/*
+ * NSS_CMSDigestedData_Encode_BeforeStart - do all the necessary things to a DigestedData
+ *     before encoding begins.
+ *
+ * In particular:
+ *  - set the right version number. The contentInfo's content type must be set up already.
+ */
+SECStatus
+NSS_CMSDigestedData_Encode_BeforeStart(NSSCMSDigestedData *digd)
+{
+    unsigned long version;
+    SECItem *dummy;
+
+    version = NSS_CMS_DIGESTED_DATA_VERSION_DATA;
+    if (!NSS_CMSType_IsData(NSS_CMSContentInfo_GetContentTypeTag(
+            &(digd->contentInfo))))
+        version = NSS_CMS_DIGESTED_DATA_VERSION_ENCAP;
+
+    dummy = SEC_ASN1EncodeInteger(digd->cmsg->poolp, &(digd->version), version);
+    return (dummy == NULL) ? SECFailure : SECSuccess;
+}
+
+/*
+ * NSS_CMSDigestedData_Encode_BeforeData - do all the necessary things to a DigestedData
+ *     before the encapsulated data is passed through the encoder.
+ *
+ * In detail:
+ *  - set up the digests if necessary
+ */
+SECStatus
+NSS_CMSDigestedData_Encode_BeforeData(NSSCMSDigestedData *digd)
+{
+    SECStatus rv = NSS_CMSContentInfo_Private_Init(&digd->contentInfo);
+    if (rv != SECSuccess) {
+        return SECFailure;
+    }
+
+    /* set up the digests */
+    if (digd->digestAlg.algorithm.len != 0 && digd->digest.len == 0) {
+        /* if digest is already there, do nothing */
+        digd->contentInfo.privateInfo->digcx = NSS_CMSDigestContext_StartSingle(&(digd->digestAlg));
+        if (digd->contentInfo.privateInfo->digcx == NULL)
+            return SECFailure;
+    }
+    return SECSuccess;
+}
+
+/*
+ * NSS_CMSDigestedData_Encode_AfterData - do all the necessary things to a DigestedData
+ *     after all the encapsulated data was passed through the encoder.
+ *
+ * In detail:
+ *  - finish the digests
+ */
+SECStatus
+NSS_CMSDigestedData_Encode_AfterData(NSSCMSDigestedData *digd)
+{
+    SECStatus rv = SECSuccess;
+    /* did we have digest calculation going on? */
+    if (digd->contentInfo.privateInfo && digd->contentInfo.privateInfo->digcx) {
+        rv = NSS_CMSDigestContext_FinishSingle(digd->contentInfo.privateInfo->digcx,
+                                               digd->cmsg->poolp,
+                                               &(digd->digest));
+        /* error has been set by NSS_CMSDigestContext_FinishSingle */
+        digd->contentInfo.privateInfo->digcx = NULL;
+    }
+
+    return rv;
+}
+
+/*
+ * NSS_CMSDigestedData_Decode_BeforeData - do all the necessary things to a DigestedData
+ *     before the encapsulated data is passed through the encoder.
+ *
+ * In detail:
+ *  - set up the digests if necessary
+ */
+SECStatus
+NSS_CMSDigestedData_Decode_BeforeData(NSSCMSDigestedData *digd)
+{
+    SECStatus rv;
+
+    /* is there a digest algorithm yet? */
+    if (digd->digestAlg.algorithm.len == 0)
+        return SECFailure;
+
+    rv = NSS_CMSContentInfo_Private_Init(&digd->contentInfo);
+    if (rv != SECSuccess) {
+        return SECFailure;
+    }
+
+    digd->contentInfo.privateInfo->digcx = NSS_CMSDigestContext_StartSingle(&(digd->digestAlg));
+    if (digd->contentInfo.privateInfo->digcx == NULL)
+        return SECFailure;
+
+    return SECSuccess;
+}
+
+/*
+ * NSS_CMSDigestedData_Decode_AfterData - do all the necessary things to a DigestedData
+ *     after all the encapsulated data was passed through the encoder.
+ *
+ * In detail:
+ *  - finish the digests
+ */
+SECStatus
+NSS_CMSDigestedData_Decode_AfterData(NSSCMSDigestedData *digd)
+{
+    SECStatus rv = SECSuccess;
+    /* did we have digest calculation going on? */
+    if (digd->contentInfo.privateInfo && digd->contentInfo.privateInfo->digcx) {
+        rv = NSS_CMSDigestContext_FinishSingle(digd->contentInfo.privateInfo->digcx,
+                                               digd->cmsg->poolp,
+                                               &(digd->cdigest));
+        /* error has been set by NSS_CMSDigestContext_FinishSingle */
+        digd->contentInfo.privateInfo->digcx = NULL;
+    }
+
+    return rv;
+}
+
+/*
+ * NSS_CMSDigestedData_Decode_AfterEnd - finalize a digestedData.
+ *
+ * In detail:
+ *  - check the digests for equality
+ */
+SECStatus
+NSS_CMSDigestedData_Decode_AfterEnd(NSSCMSDigestedData *digd)
+{
+    /* did we have digest calculation going on? */
+    if (digd->cdigest.len != 0) {
+        /* XXX comparision btw digest & cdigest */
+        /* XXX set status */
+        /* TODO!!!! */
+    }
+
+    return SECSuccess;
+}