mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-11-11 02:10:17 +01:00
437 lines
11 KiB
C
437 lines
11 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* The following code handles the storage of PKCS 11 modules used by the
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* NSS. This file is written to abstract away how the modules are
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* stored so we can deside that later.
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*/
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#include "sftkdb.h"
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#include "sftkdbti.h"
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#include "sdb.h"
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#include "prsystem.h"
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#include "prprf.h"
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#include "prenv.h"
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#include "lgglue.h"
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#include "secerr.h"
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#include "softoken.h"
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static LGOpenFunc legacy_glue_open = NULL;
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static LGReadSecmodFunc legacy_glue_readSecmod = NULL;
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static LGReleaseSecmodFunc legacy_glue_releaseSecmod = NULL;
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static LGDeleteSecmodFunc legacy_glue_deleteSecmod = NULL;
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static LGAddSecmodFunc legacy_glue_addSecmod = NULL;
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static LGShutdownFunc legacy_glue_shutdown = NULL;
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/*
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* The following 3 functions duplicate the work done by bl_LoadLibrary.
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* We should make bl_LoadLibrary a global and replace the call to
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* sftkdb_LoadLibrary(const char *libname) with it.
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*/
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#ifdef XP_UNIX
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#include <unistd.h>
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#define LG_MAX_LINKS 20
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static char *
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sftkdb_resolvePath(const char *orig)
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{
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int count = 0;
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int len =0;
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int ret = -1;
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char *resolved = NULL;
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char *source = NULL;
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len = 1025; /* MAX PATH +1*/
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if (strlen(orig)+1 > len) {
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/* PATH TOO LONG */
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return NULL;
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}
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resolved = PORT_Alloc(len);
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if (!resolved) {
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return NULL;
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}
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source = PORT_Alloc(len);
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if (!source) {
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goto loser;
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}
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PORT_Strcpy(source, orig);
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/* Walk down all the links */
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while ( count++ < LG_MAX_LINKS) {
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char *tmp;
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/* swap our previous sorce out with resolved */
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/* read it */
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ret = readlink(source, resolved, len-1);
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if (ret < 0) {
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break;
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}
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resolved[ret] = 0;
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tmp = source; source = resolved; resolved = tmp;
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}
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if (count > 1) {
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ret = 0;
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}
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loser:
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if (resolved) {
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PORT_Free(resolved);
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}
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if (ret < 0) {
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if (source) {
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PORT_Free(source);
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source = NULL;
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}
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}
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return source;
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}
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#endif
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static PRLibrary *
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sftkdb_LoadFromPath(const char *path, const char *libname)
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{
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char *c;
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int pathLen, nameLen, fullPathLen;
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char *fullPathName = NULL;
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PRLibSpec libSpec;
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PRLibrary *lib = NULL;
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/* strip of our parent's library name */
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c = strrchr(path, PR_GetDirectorySeparator());
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if (!c) {
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return NULL; /* invalid path */
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}
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pathLen = (c-path)+1;
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nameLen = strlen(libname);
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fullPathLen = pathLen + nameLen +1;
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fullPathName = (char *)PORT_Alloc(fullPathLen);
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if (fullPathName == NULL) {
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return NULL; /* memory allocation error */
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}
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PORT_Memcpy(fullPathName, path, pathLen);
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PORT_Memcpy(fullPathName+pathLen, libname, nameLen);
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fullPathName[fullPathLen-1] = 0;
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libSpec.type = PR_LibSpec_Pathname;
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libSpec.value.pathname = fullPathName;
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lib = PR_LoadLibraryWithFlags(libSpec, PR_LD_NOW | PR_LD_LOCAL);
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PORT_Free(fullPathName);
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return lib;
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}
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static PRLibrary *
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sftkdb_LoadLibrary(const char *libname)
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{
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PRLibrary *lib = NULL;
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PRFuncPtr fn_addr;
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char *parentLibPath = NULL;
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fn_addr = (PRFuncPtr) &sftkdb_LoadLibrary;
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parentLibPath = PR_GetLibraryFilePathname(SOFTOKEN_LIB_NAME, fn_addr);
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if (!parentLibPath) {
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goto done;
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}
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lib = sftkdb_LoadFromPath(parentLibPath, libname);
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#ifdef XP_UNIX
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/* handle symbolic link case */
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if (!lib) {
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char *trueParentLibPath = sftkdb_resolvePath(parentLibPath);
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if (!trueParentLibPath) {
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goto done;
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}
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lib = sftkdb_LoadFromPath(trueParentLibPath, libname);
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PORT_Free(trueParentLibPath);
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}
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#endif
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done:
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if (parentLibPath) {
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PORT_Free(parentLibPath);
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}
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/* still couldn't load it, try the generic path */
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if (!lib) {
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PRLibSpec libSpec;
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libSpec.type = PR_LibSpec_Pathname;
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libSpec.value.pathname = libname;
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lib = PR_LoadLibraryWithFlags(libSpec, PR_LD_NOW | PR_LD_LOCAL);
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}
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return lib;
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}
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/*
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* stub files for legacy db's to be able to encrypt and decrypt
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* various keys and attributes.
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*/
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static SECStatus
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sftkdb_encrypt_stub(PLArenaPool *arena, SDB *sdb, SECItem *plainText,
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SECItem **cipherText)
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{
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SFTKDBHandle *handle = sdb->app_private;
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SECStatus rv;
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if (handle == NULL) {
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return SECFailure;
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}
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/* if we aren't the key handle, try the other handle */
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if (handle->type != SFTK_KEYDB_TYPE) {
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handle = handle->peerDB;
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}
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/* not a key handle */
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if (handle == NULL || handle->passwordLock == NULL) {
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return SECFailure;
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}
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PZ_Lock(handle->passwordLock);
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if (handle->passwordKey.data == NULL) {
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PZ_Unlock(handle->passwordLock);
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/* PORT_SetError */
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return SECFailure;
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}
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rv = sftkdb_EncryptAttribute(arena,
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handle->newKey?handle->newKey:&handle->passwordKey,
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plainText, cipherText);
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PZ_Unlock(handle->passwordLock);
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return rv;
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}
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/*
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* stub files for legacy db's to be able to encrypt and decrypt
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* various keys and attributes.
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*/
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static SECStatus
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sftkdb_decrypt_stub(SDB *sdb, SECItem *cipherText, SECItem **plainText)
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{
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SFTKDBHandle *handle = sdb->app_private;
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SECStatus rv;
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SECItem *oldKey = NULL;
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if (handle == NULL) {
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return SECFailure;
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}
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/* if we aren't th handle, try the other handle */
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oldKey = handle->oldKey;
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if (handle->type != SFTK_KEYDB_TYPE) {
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handle = handle->peerDB;
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}
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/* not a key handle */
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if (handle == NULL || handle->passwordLock == NULL) {
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return SECFailure;
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}
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PZ_Lock(handle->passwordLock);
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if (handle->passwordKey.data == NULL) {
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PZ_Unlock(handle->passwordLock);
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/* PORT_SetError */
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return SECFailure;
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}
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rv = sftkdb_DecryptAttribute( oldKey ? oldKey : &handle->passwordKey,
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cipherText, plainText);
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PZ_Unlock(handle->passwordLock);
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return rv;
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}
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static const char *LEGACY_LIB_NAME =
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SHLIB_PREFIX"nssdbm"SHLIB_VERSION"."SHLIB_SUFFIX;
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/*
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* 2 bools to tell us if we've check the legacy library successfully or
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* not. Initialize on startup to false by the C BSS segment;
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*/
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static PRBool legacy_glue_libCheckFailed; /* set if we failed the check */
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static PRBool legacy_glue_libCheckSucceeded; /* set if we passed the check */
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static PRLibrary *legacy_glue_lib = NULL;
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static SECStatus
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sftkdbLoad_Legacy(PRBool isFIPS)
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{
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PRLibrary *lib = NULL;
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LGSetCryptFunc setCryptFunction = NULL;
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if (legacy_glue_lib) {
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/* this check is necessary because it's possible we loaded the
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* legacydb to read secmod.db, which told us whether we were in
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* FIPS mode or not. */
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if (isFIPS && !legacy_glue_libCheckSucceeded) {
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if (legacy_glue_libCheckFailed ||
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!BLAPI_SHVerify(LEGACY_LIB_NAME,(PRFuncPtr)legacy_glue_open)) {
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legacy_glue_libCheckFailed = PR_TRUE;
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/* don't clobber legacy glue to avoid race. just let it
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* get cleared in shutdown */
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return SECFailure;
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}
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legacy_glue_libCheckSucceeded = PR_TRUE;
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}
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return SECSuccess;
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}
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lib = sftkdb_LoadLibrary(LEGACY_LIB_NAME);
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if (lib == NULL) {
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return SECFailure;
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}
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legacy_glue_open = (LGOpenFunc)PR_FindFunctionSymbol(lib, "legacy_Open");
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legacy_glue_readSecmod = (LGReadSecmodFunc) PR_FindFunctionSymbol(lib,
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"legacy_ReadSecmodDB");
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legacy_glue_releaseSecmod = (LGReleaseSecmodFunc) PR_FindFunctionSymbol(lib,
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"legacy_ReleaseSecmodDBData");
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legacy_glue_deleteSecmod = (LGDeleteSecmodFunc) PR_FindFunctionSymbol(lib,
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"legacy_DeleteSecmodDB");
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legacy_glue_addSecmod = (LGAddSecmodFunc)PR_FindFunctionSymbol(lib,
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"legacy_AddSecmodDB");
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legacy_glue_shutdown = (LGShutdownFunc) PR_FindFunctionSymbol(lib,
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"legacy_Shutdown");
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setCryptFunction = (LGSetCryptFunc) PR_FindFunctionSymbol(lib,
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"legacy_SetCryptFunctions");
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if (!legacy_glue_open || !legacy_glue_readSecmod ||
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!legacy_glue_releaseSecmod || !legacy_glue_deleteSecmod ||
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!legacy_glue_addSecmod || !setCryptFunction) {
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PR_UnloadLibrary(lib);
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return SECFailure;
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}
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/* verify the loaded library if we are in FIPS mode */
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if (isFIPS) {
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if (!BLAPI_SHVerify(LEGACY_LIB_NAME,(PRFuncPtr)legacy_glue_open)) {
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PR_UnloadLibrary(lib);
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return SECFailure;
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}
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legacy_glue_libCheckSucceeded = PR_TRUE;
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}
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setCryptFunction(sftkdb_encrypt_stub,sftkdb_decrypt_stub);
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legacy_glue_lib = lib;
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return SECSuccess;
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}
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CK_RV
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sftkdbCall_open(const char *dir, const char *certPrefix, const char *keyPrefix,
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int certVersion, int keyVersion, int flags, PRBool isFIPS,
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SDB **certDB, SDB **keyDB)
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{
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SECStatus rv;
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rv = sftkdbLoad_Legacy(isFIPS);
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if (rv != SECSuccess) {
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return CKR_GENERAL_ERROR;
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}
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if (!legacy_glue_open) {
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PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
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return SECFailure;
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}
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return (*legacy_glue_open)(dir, certPrefix, keyPrefix,
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certVersion, keyVersion,
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flags, certDB, keyDB);
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}
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char **
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sftkdbCall_ReadSecmodDB(const char *appName, const char *filename,
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const char *dbname, char *params, PRBool rw)
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{
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SECStatus rv;
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rv = sftkdbLoad_Legacy(PR_FALSE);
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if (rv != SECSuccess) {
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return NULL;
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}
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if (!legacy_glue_readSecmod) {
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PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
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return NULL;
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}
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return (*legacy_glue_readSecmod)(appName, filename, dbname, params, rw);
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}
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SECStatus
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sftkdbCall_ReleaseSecmodDBData(const char *appName,
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const char *filename, const char *dbname,
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char **moduleSpecList, PRBool rw)
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{
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SECStatus rv;
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rv = sftkdbLoad_Legacy(PR_FALSE);
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if (rv != SECSuccess) {
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return rv;
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}
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if (!legacy_glue_releaseSecmod) {
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PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
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return SECFailure;
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}
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return (*legacy_glue_releaseSecmod)(appName, filename, dbname,
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moduleSpecList, rw);
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}
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SECStatus
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sftkdbCall_DeleteSecmodDB(const char *appName,
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const char *filename, const char *dbname,
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char *args, PRBool rw)
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{
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SECStatus rv;
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rv = sftkdbLoad_Legacy(PR_FALSE);
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if (rv != SECSuccess) {
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return rv;
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}
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if (!legacy_glue_deleteSecmod) {
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PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
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return SECFailure;
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}
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return (*legacy_glue_deleteSecmod)(appName, filename, dbname, args, rw);
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}
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SECStatus
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sftkdbCall_AddSecmodDB(const char *appName,
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const char *filename, const char *dbname,
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char *module, PRBool rw)
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{
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SECStatus rv;
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rv = sftkdbLoad_Legacy(PR_FALSE);
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if (rv != SECSuccess) {
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return rv;
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}
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if (!legacy_glue_addSecmod) {
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PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
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return SECFailure;
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}
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return (*legacy_glue_addSecmod)(appName, filename, dbname, module, rw);
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}
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CK_RV
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sftkdbCall_Shutdown(void)
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{
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CK_RV crv = CKR_OK;
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char *disableUnload = NULL;
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if (!legacy_glue_lib) {
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return CKR_OK;
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}
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if (legacy_glue_shutdown) {
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#ifdef NO_FORK_CHECK
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PRBool parentForkedAfterC_Initialize = PR_FALSE;
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#endif
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crv = (*legacy_glue_shutdown)(parentForkedAfterC_Initialize);
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}
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disableUnload = PR_GetEnv("NSS_DISABLE_UNLOAD");
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if (!disableUnload) {
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PR_UnloadLibrary(legacy_glue_lib);
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}
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legacy_glue_lib = NULL;
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legacy_glue_open = NULL;
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legacy_glue_readSecmod = NULL;
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legacy_glue_releaseSecmod = NULL;
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legacy_glue_deleteSecmod = NULL;
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legacy_glue_addSecmod = NULL;
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legacy_glue_libCheckFailed = PR_FALSE;
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legacy_glue_libCheckSucceeded = PR_FALSE;
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return crv;
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}
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