Delete bundled copy of NSS and replace with README.

nss/lib/pkcs7/p7common.c

Index: nss/lib/pkcs7/p7common.c
diff --git a/nss/lib/pkcs7/p7common.c b/nss/lib/pkcs7/p7common.c
deleted file mode 100644
index 10015ce25b1fdad99826f644ac028616d9b051c9..0000000000000000000000000000000000000000
--- a/nss/lib/pkcs7/p7common.c
+++ /dev/null
@@ -1,684 +0,0 @@
-/* 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/. */
-
-/*
- * PKCS7 implementation -- the exported parts that are used whether
- * creating or decoding.
- */
-
-#include "p7local.h"
-
-#include "cert.h"
-#include "secitem.h"
-#include "secoid.h"
-#include "pk11func.h"
-
-/*
- * Find out (saving pointer to lookup result for future reference)
- * and return the inner content type.
- */
-SECOidTag
-SEC_PKCS7ContentType (SEC_PKCS7ContentInfo *cinfo)
-{
-    if (cinfo->contentTypeTag == NULL)
-	cinfo->contentTypeTag = SECOID_FindOID(&(cinfo->contentType));
-
-    if (cinfo->contentTypeTag == NULL)
-	return SEC_OID_UNKNOWN;
-
-    return cinfo->contentTypeTag->offset;
-}
-
-
-/*
- * Destroy a PKCS7 contentInfo and all of its sub-pieces.
- */
-void
-SEC_PKCS7DestroyContentInfo(SEC_PKCS7ContentInfo *cinfo)
-{
-    SECOidTag kind;
-    CERTCertificate **certs;
-    CERTCertificateList **certlists;
-    SEC_PKCS7SignerInfo **signerinfos;
-    SEC_PKCS7RecipientInfo **recipientinfos;
-
-    PORT_Assert (cinfo->refCount > 0);
-    if (cinfo->refCount <= 0)
-	return;
-
-    cinfo->refCount--;
-    if (cinfo->refCount > 0)
-	return;
-
-    certs = NULL;
-    certlists = NULL;
-    recipientinfos = NULL;
-    signerinfos = NULL;
-
-    kind = SEC_PKCS7ContentType (cinfo);
-    switch (kind) {
-      case SEC_OID_PKCS7_ENVELOPED_DATA:
-	{
-	    SEC_PKCS7EnvelopedData *edp;
-
-	    edp = cinfo->content.envelopedData;
-	    if (edp != NULL) {
-		recipientinfos = edp->recipientInfos;
-	    }
-	}
-	break;
-      case SEC_OID_PKCS7_SIGNED_DATA:
-	{
-	    SEC_PKCS7SignedData *sdp;
-
-	    sdp = cinfo->content.signedData;
-	    if (sdp != NULL) {
-		certs = sdp->certs;
-		certlists = sdp->certLists;
-		signerinfos = sdp->signerInfos;
-	    }
-	}
-	break;
-      case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA:
-	{
-	    SEC_PKCS7SignedAndEnvelopedData *saedp;
-
-	    saedp = cinfo->content.signedAndEnvelopedData;
-	    if (saedp != NULL) {
-		certs = saedp->certs;
-		certlists = saedp->certLists;
-		recipientinfos = saedp->recipientInfos;
-		signerinfos = saedp->signerInfos;
-		if (saedp->sigKey != NULL)
-		    PK11_FreeSymKey (saedp->sigKey);
-	    }
-	}
-	break;
-      default:
-	/* XXX Anything else that needs to be "manually" freed/destroyed? */
-	break;
-    }
-
-    if (certs != NULL) {
-	CERTCertificate *cert;
-
-	while ((cert = *certs++) != NULL) {
-	    CERT_DestroyCertificate (cert);
-	}
-    }
-
-    if (certlists != NULL) {
-	CERTCertificateList *certlist;
-
-	while ((certlist = *certlists++) != NULL) {
-	    CERT_DestroyCertificateList (certlist);
-	}
-    }
-
-    if (recipientinfos != NULL) {
-	SEC_PKCS7RecipientInfo *ri;
-
-	while ((ri = *recipientinfos++) != NULL) {
-	    if (ri->cert != NULL)
-		CERT_DestroyCertificate (ri->cert);
-	}
-    }
-
-    if (signerinfos != NULL) {
-	SEC_PKCS7SignerInfo *si;
-
-	while ((si = *signerinfos++) != NULL) {
-	    if (si->cert != NULL)
-		CERT_DestroyCertificate (si->cert);
-	    if (si->certList != NULL)
-		CERT_DestroyCertificateList (si->certList);
-	}
-    }
-
-    if (cinfo->poolp != NULL) {
-	PORT_FreeArena (cinfo->poolp, PR_FALSE);	/* XXX clear it? */
-    }
-}
-
-
-/*
- * Return a copy of the given contentInfo.  The copy may be virtual
- * or may be real -- either way, the result needs to be passed to
- * SEC_PKCS7DestroyContentInfo later (as does the original).
- */
-SEC_PKCS7ContentInfo *
-SEC_PKCS7CopyContentInfo(SEC_PKCS7ContentInfo *cinfo)
-{
-    if (cinfo == NULL)
-	return NULL;
-
-    PORT_Assert (cinfo->refCount > 0);
-
-    if (cinfo->created) {
-	/*
-	 * Want to do a real copy of these; otherwise subsequent
-	 * changes made to either copy are likely to be a surprise.
-	 * XXX I suspect that this will not actually be called for yet,
-	 * which is why the assert, so to notice if it is...
-	 */
-	PORT_Assert (0);
-	/*
-	 * XXX Create a new pool here, and copy everything from
-	 * within.  For cert stuff, need to call the appropriate
-	 * copy functions, etc.
-	 */
-    }
-
-    cinfo->refCount++;
-    return cinfo;
-}
-
-
-/*
- * Return a pointer to the actual content.  In the case of those types
- * which are encrypted, this returns the *plain* content.
- * XXX Needs revisiting if/when we handle nested encrypted types.
- */
-SECItem *
-SEC_PKCS7GetContent(SEC_PKCS7ContentInfo *cinfo)
-{
-    SECOidTag kind;
-
-    kind = SEC_PKCS7ContentType (cinfo);
-    switch (kind) {
-      case SEC_OID_PKCS7_DATA:
-	return cinfo->content.data;
-      case SEC_OID_PKCS7_DIGESTED_DATA:
-	{
-	    SEC_PKCS7DigestedData *digd;
-
-	    digd = cinfo->content.digestedData;
-	    if (digd == NULL)
-		break;
-	    return SEC_PKCS7GetContent (&(digd->contentInfo));
-	}
-      case SEC_OID_PKCS7_ENCRYPTED_DATA:
-	{
-	    SEC_PKCS7EncryptedData *encd;
-
-	    encd = cinfo->content.encryptedData;
-	    if (encd == NULL)
-		break;
-	    return &(encd->encContentInfo.plainContent);
-	}
-      case SEC_OID_PKCS7_ENVELOPED_DATA:
-	{
-	    SEC_PKCS7EnvelopedData *envd;
-
-	    envd = cinfo->content.envelopedData;
-	    if (envd == NULL)
-		break;
-	    return &(envd->encContentInfo.plainContent);
-	}
-      case SEC_OID_PKCS7_SIGNED_DATA:
-	{
-	    SEC_PKCS7SignedData *sigd;
-
-	    sigd = cinfo->content.signedData;
-	    if (sigd == NULL)
-		break;
-	    return SEC_PKCS7GetContent (&(sigd->contentInfo));
-	}
-      case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA:
-	{
-	    SEC_PKCS7SignedAndEnvelopedData *saed;
-
-	    saed = cinfo->content.signedAndEnvelopedData;
-	    if (saed == NULL)
-		break;
-	    return &(saed->encContentInfo.plainContent);
-	}
-      default:
-	PORT_Assert(0);
-	break;
-    }
-
-    return NULL;
-}
-
-
-/*
- * XXX Fix the placement and formatting of the
- * following routines (i.e. make them consistent with the rest of
- * the pkcs7 code -- I think some/many belong in other files and
- * they all need a formatting/style rehaul)
- */
-
-/* retrieve the algorithm identifier for encrypted data.  
- * the identifier returned is a copy of the algorithm identifier
- * in the content info and needs to be freed after being used.
- *
- *   cinfo is the content info for which to retrieve the
- *     encryption algorithm.
- *
- * if the content info is not encrypted data or an error 
- * occurs NULL is returned.
- */
-SECAlgorithmID *
-SEC_PKCS7GetEncryptionAlgorithm(SEC_PKCS7ContentInfo *cinfo)
-{
-  SECAlgorithmID *alg = 0;
-  switch (SEC_PKCS7ContentType(cinfo))
-    {
-    case SEC_OID_PKCS7_ENCRYPTED_DATA:
-      alg = &cinfo->content.encryptedData->encContentInfo.contentEncAlg;
-      break;
-    case SEC_OID_PKCS7_ENVELOPED_DATA:
-      alg = &cinfo->content.envelopedData->encContentInfo.contentEncAlg;
-      break;
-    case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA:
-      alg = &cinfo->content.signedAndEnvelopedData
-	->encContentInfo.contentEncAlg;
-      break;
-    default:
-      alg = 0;
-      break;
-    }
-
-    return alg;
-}
-
-/* set the content of the content info.  For data content infos,
- * the data is set.  For encrytped content infos, the plainContent
- * is set, and is expected to be encrypted later.
- *  
- * cinfo is the content info where the data will be set
- *
- * buf is a buffer of the data to set
- *
- * len is the length of the data being set.
- *
- * in the event of an error, SECFailure is returned.  SECSuccess 
- * indicates the content was successfully set.
- */
-SECStatus 
-SEC_PKCS7SetContent(SEC_PKCS7ContentInfo *cinfo,
-		    const char *buf, 
-		    unsigned long len)
-{
-    SECOidTag cinfo_type;
-    SECStatus rv;
-    SECItem content;
-    SECOidData *contentTypeTag = NULL;
-
-    content.type = siBuffer;
-    content.data = (unsigned char *)buf;
-    content.len = len;
-
-    cinfo_type = SEC_PKCS7ContentType(cinfo);
-
-    /* set inner content */
-    switch(cinfo_type)
-    {
-	case SEC_OID_PKCS7_SIGNED_DATA:
-	    if(content.len > 0) {
-		/* we "leak" the old content here, but as it's all in the pool */
-		/* it does not really matter */
-
-		/* create content item if necessary */
-		if (cinfo->content.signedData->contentInfo.content.data == NULL)
-		    cinfo->content.signedData->contentInfo.content.data = SECITEM_AllocItem(cinfo->poolp, NULL, 0);
-		rv = SECITEM_CopyItem(cinfo->poolp, 
-			cinfo->content.signedData->contentInfo.content.data,
-			&content);
-	    } else {
-		cinfo->content.signedData->contentInfo.content.data->data = NULL;
-		cinfo->content.signedData->contentInfo.content.data->len = 0;
-		rv = SECSuccess;
-	    }
-	    if(rv == SECFailure)
-		goto loser;
-	    
-	    break;
-	case SEC_OID_PKCS7_ENCRYPTED_DATA:
-	    /* XXX this forces the inner content type to be "data" */
-	    /* do we really want to override without asking or reason? */
-	    contentTypeTag = SECOID_FindOIDByTag(SEC_OID_PKCS7_DATA);
-	    if(contentTypeTag == NULL)
-		goto loser;
-	    rv = SECITEM_CopyItem(cinfo->poolp, 
-		&(cinfo->content.encryptedData->encContentInfo.contentType),
-		&(contentTypeTag->oid));
-	    if(rv == SECFailure)
-		goto loser;
-	    if(content.len > 0) {
-		rv = SECITEM_CopyItem(cinfo->poolp, 
-			&(cinfo->content.encryptedData->encContentInfo.plainContent),
-			&content);
-	    } else {
-		cinfo->content.encryptedData->encContentInfo.plainContent.data = NULL;
-		cinfo->content.encryptedData->encContentInfo.encContent.data = NULL;
-		cinfo->content.encryptedData->encContentInfo.plainContent.len = 0;
-		cinfo->content.encryptedData->encContentInfo.encContent.len = 0;
-		rv = SECSuccess;
-	    }
-	    if(rv == SECFailure)
-		goto loser;
-	    break;
-	case SEC_OID_PKCS7_DATA:
-	    cinfo->content.data = (SECItem *)PORT_ArenaZAlloc(cinfo->poolp,
-		sizeof(SECItem));
-	    if(cinfo->content.data == NULL)
-		goto loser;
-	    if(content.len > 0) {
-		rv = SECITEM_CopyItem(cinfo->poolp,
-			cinfo->content.data, &content);
-	    } else {
-	    	/* handle case with NULL content */
-		rv = SECSuccess;
-	    }
-	    if(rv == SECFailure)
-		goto loser;
-	    break;
-	default:
-	    goto loser;
-    }
-
-    return SECSuccess;
-
-loser:
-	
-    return SECFailure;
-}
-
-/* the content of an encrypted data content info is encrypted.
- * it is assumed that for encrypted data, that the data has already
- * been set and is in the "plainContent" field of the content info.
- *
- * cinfo is the content info to encrypt
- *
- * key is the key with which to perform the encryption.  if the
- *     algorithm is a password based encryption algorithm, the
- *     key is actually a password which will be processed per
- *     PKCS #5.
- * 
- * in the event of an error, SECFailure is returned.  SECSuccess
- * indicates a success.
- */
-SECStatus 
-SEC_PKCS7EncryptContents(PLArenaPool *poolp,
-			 SEC_PKCS7ContentInfo *cinfo,
-			 SECItem *key,
-			 void *wincx)
-{
-    SECAlgorithmID *algid 	= NULL;
-    SECItem *       src;
-    SECItem *       dest;
-    SECItem *       blocked_data = NULL;
-    void *          mark;
-    void *          cx;
-    PK11SymKey *    eKey 	= NULL;
-    PK11SlotInfo *  slot 	= NULL;
-
-    CK_MECHANISM_TYPE cryptoMechType;
-    int             bs;
-    SECStatus       rv 		= SECFailure;
-    SECItem         *c_param = NULL;
-
-    if((cinfo == NULL) || (key == NULL))
-	return SECFailure;
-
-    if(SEC_PKCS7ContentType(cinfo) != SEC_OID_PKCS7_ENCRYPTED_DATA)
-	return SECFailure;
-
-    algid = SEC_PKCS7GetEncryptionAlgorithm(cinfo);	
-    if(algid == NULL)
-	return SECFailure;
-
-    if(poolp == NULL)
-	poolp = cinfo->poolp;
-
-    mark = PORT_ArenaMark(poolp);
-    
-    src = &cinfo->content.encryptedData->encContentInfo.plainContent;
-    dest = &cinfo->content.encryptedData->encContentInfo.encContent;
-    dest->data = (unsigned char*)PORT_ArenaZAlloc(poolp, (src->len + 64));
-    dest->len = (src->len + 64);
-    if(dest->data == NULL) {
-	rv = SECFailure;
-	goto loser;
-    }
-
-    slot = PK11_GetInternalKeySlot();
-    if(slot == NULL) {
-	rv = SECFailure;
-	goto loser;
-    }
-
-    eKey = PK11_PBEKeyGen(slot, algid, key, PR_FALSE, wincx);
-    if(eKey == NULL) {
-	rv = SECFailure;
-	goto loser;
-    }
-    
-    cryptoMechType = PK11_GetPBECryptoMechanism(algid, &c_param, key);
-    if (cryptoMechType == CKM_INVALID_MECHANISM) {
-	rv = SECFailure;
-	goto loser;
-    }
-
-    /* block according to PKCS 8 */
-    bs = PK11_GetBlockSize(cryptoMechType, c_param);
-    rv = SECSuccess;
-    if(bs) {
-	char pad_char;
-	pad_char = (char)(bs - (src->len % bs));
-	if(src->len % bs) {
-	    rv = SECSuccess;
-	    blocked_data = PK11_BlockData(src, bs);
-	    if(blocked_data) {
-		PORT_Memset((blocked_data->data + blocked_data->len 
-			    - (int)pad_char), 
-			    pad_char, (int)pad_char);
-	    } else {
-		rv = SECFailure;
-		goto loser;
-	    }
-	} else {
-	    blocked_data = SECITEM_DupItem(src);
-	    if(blocked_data) {
-		blocked_data->data = (unsigned char*)PORT_Realloc(
-						  blocked_data->data,
-						  blocked_data->len + bs);
-		if(blocked_data->data) {
-		    blocked_data->len += bs;
-		    PORT_Memset((blocked_data->data + src->len), (char)bs, bs);
-		} else {
-		    rv = SECFailure;
-		    goto loser;
-		}
-	    } else {
-		rv = SECFailure;
-		goto loser;
-	    }
-	 }
-    } else {
-	blocked_data = SECITEM_DupItem(src);
-	if(!blocked_data) {
-	    rv = SECFailure;
-	    goto loser;
-	}
-    }
-
-    cx = PK11_CreateContextBySymKey(cryptoMechType, CKA_ENCRYPT,
-		    		    eKey, c_param);
-    if(cx == NULL) {
-	rv = SECFailure;
-	goto loser;
-    }
-
-    rv = PK11_CipherOp((PK11Context*)cx, dest->data, (int *)(&dest->len), 
-		       (int)(src->len + 64), blocked_data->data, 
-		       (int)blocked_data->len);
-    PK11_DestroyContext((PK11Context*)cx, PR_TRUE);
-
-loser:
-    /* let success fall through */
-    if(blocked_data != NULL)
-	SECITEM_ZfreeItem(blocked_data, PR_TRUE);
-
-    if(rv == SECFailure)
-	PORT_ArenaRelease(poolp, mark);
-    else 
-	PORT_ArenaUnmark(poolp, mark);
-
-    if(eKey != NULL)
-	PK11_FreeSymKey(eKey);
-
-    if(slot != NULL)
-	PK11_FreeSlot(slot);
-
-    if(c_param != NULL) 
-	SECITEM_ZfreeItem(c_param, PR_TRUE);
-	
-    return rv;
-}
-
-/* the content of an encrypted data content info is decrypted.
- * it is assumed that for encrypted data, that the data has already
- * been set and is in the "encContent" field of the content info.
- *
- * cinfo is the content info to decrypt
- *
- * key is the key with which to perform the decryption.  if the
- *     algorithm is a password based encryption algorithm, the
- *     key is actually a password which will be processed per
- *     PKCS #5.
- * 
- * in the event of an error, SECFailure is returned.  SECSuccess
- * indicates a success.
- */
-SECStatus 
-SEC_PKCS7DecryptContents(PLArenaPool *poolp,
-			 SEC_PKCS7ContentInfo *cinfo,
-			 SECItem *key,
-			 void *wincx)
-{
-    SECAlgorithmID *algid = NULL;
-    SECStatus rv = SECFailure;
-    SECItem *dest, *src;
-    void *mark;
-
-    PK11SymKey *eKey = NULL;
-    PK11SlotInfo *slot = NULL;
-    CK_MECHANISM_TYPE cryptoMechType;
-    void *cx;
-    SECItem *c_param = NULL;
-    int bs;
-
-    if((cinfo == NULL) || (key == NULL))
-	return SECFailure;
-
-    if(SEC_PKCS7ContentType(cinfo) != SEC_OID_PKCS7_ENCRYPTED_DATA)
-	return SECFailure;
-
-    algid = SEC_PKCS7GetEncryptionAlgorithm(cinfo);	
-    if(algid == NULL)
-	return SECFailure;
-
-    if(poolp == NULL)
-	poolp = cinfo->poolp;
-
-    mark = PORT_ArenaMark(poolp);
-    
-    src = &cinfo->content.encryptedData->encContentInfo.encContent;
-    dest = &cinfo->content.encryptedData->encContentInfo.plainContent;
-    dest->data = (unsigned char*)PORT_ArenaZAlloc(poolp, (src->len + 64));
-    dest->len = (src->len + 64);
-    if(dest->data == NULL) {
-	rv = SECFailure;
-	goto loser;
-    }
-
-    slot = PK11_GetInternalKeySlot();
-    if(slot == NULL) {
-	rv = SECFailure;
-	goto loser;
-    }
-
-    eKey = PK11_PBEKeyGen(slot, algid, key, PR_FALSE, wincx);
-    if(eKey == NULL) {
-	rv = SECFailure;
-	goto loser;
-    }
-    
-    cryptoMechType = PK11_GetPBECryptoMechanism(algid, &c_param, key);
-    if (cryptoMechType == CKM_INVALID_MECHANISM) {
-	rv = SECFailure;
-	goto loser;
-    }
-
-    cx = PK11_CreateContextBySymKey(cryptoMechType, CKA_DECRYPT,
-		    		    eKey, c_param);
-    if(cx == NULL) {
-	rv = SECFailure;
-	goto loser;
-    }
-
-    rv = PK11_CipherOp((PK11Context*)cx, dest->data, (int *)(&dest->len), 
-		       (int)(src->len + 64), src->data, (int)src->len);
-    PK11_DestroyContext((PK11Context *)cx, PR_TRUE);
-
-    bs = PK11_GetBlockSize(cryptoMechType, c_param);
-    if(bs) {
-	/* check for proper badding in block algorithms.  this assumes
-	 * RC2 cbc or a DES cbc variant.  and the padding is thus defined
-	 */
-	if(((int)dest->data[dest->len-1] <= bs) && 
-	   ((int)dest->data[dest->len-1] > 0)) {
-	    dest->len -= (int)dest->data[dest->len-1];
-	} else {
-	    rv = SECFailure;
-	    /* set an error ? */
-	}
-    } 
-
-loser:
-    /* let success fall through */
-    if(rv == SECFailure)
-	PORT_ArenaRelease(poolp, mark);
-    else
-	PORT_ArenaUnmark(poolp, mark);
-
-    if(eKey != NULL)
-	PK11_FreeSymKey(eKey);
-
-    if(slot != NULL)
-	PK11_FreeSlot(slot);
-
-    if(c_param != NULL) 
-	SECITEM_ZfreeItem(c_param, PR_TRUE);
-	
-    return rv;
-}
-
-SECItem **
-SEC_PKCS7GetCertificateList(SEC_PKCS7ContentInfo *cinfo)
-{
-    switch(SEC_PKCS7ContentType(cinfo))
-    {
-	case SEC_OID_PKCS7_SIGNED_DATA:
-	    return cinfo->content.signedData->rawCerts;
-	    break;
-	default:
-	    return NULL;
-	    break;
-    }
-}
-
-
-int
-SEC_PKCS7GetKeyLength(SEC_PKCS7ContentInfo *cinfo)
-{
-  if (cinfo->contentTypeTag->offset == SEC_OID_PKCS7_ENVELOPED_DATA)
-    return cinfo->content.envelopedData->encContentInfo.keysize;
-  else
-    return 0;
-}
-