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/***************************************************************************
$RCSfile$
-------------------
cvs : $Id$
begin : Tue May 03 2005
copyright : (C) 2005 by Martin Preuss
email : martin@libchipcard.de

***************************************************************************
* Please see toplevel file COPYING for license details *
***************************************************************************/

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include "globals.h"

#include <gwenhywfar/debug.h>
#include <gwenhywfar/bio_file.h>
#include <gwenhywfar/base64.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>



static int signFile(GWEN_CRYPTTOKEN *ct,
GWEN_CRYPTTOKEN_CONTEXT *ctx,
const char *inFile,
FILE *f) {
GWEN_BUFFER *fbuf;
GWEN_BUFFER *sigbuf;
GWEN_BUFFER *b64buf;
GWEN_BUFFEREDIO *bio;
int fd;
int rv;

fd=open(inFile, O_RDONLY);
if (fd==-1) {
DBG_ERROR(GWEN_LOGDOMAIN, "ERROR on open(%s): %s",
inFile, strerror(errno));
return 1;
}

bio=GWEN_BufferedIO_File_new(fd);
assert(bio);
GWEN_BufferedIO_SetReadBuffer(bio, 0, 1024);

fbuf=GWEN_Buffer_new(0, 1025, 0, 1);

while(1) {
GWEN_ERRORCODE err;
char buffer[1024];
unsigned int bsize;

bsize=sizeof(buffer);
err=GWEN_BufferedIO_ReadRaw(bio, buffer, &bsize);
if (!GWEN_Error_IsOk(err)) {
DBG_ERROR_ERR(0, err);
GWEN_BufferedIO_Abandon(bio);
GWEN_BufferedIO_free(bio);
return 1;
}
if (bsize==0)
break;
GWEN_Buffer_AppendBytes(fbuf, buffer, bsize);
}
GWEN_BufferedIO_Close(bio);
GWEN_BufferedIO_free(bio);

GWEN_Buffer_Rewind(fbuf);

sigbuf=GWEN_Buffer_new(0, 256, 0, 1);
rv=GWEN_CryptToken_Sign(ct, ctx,
GWEN_Buffer_GetStart(fbuf),
GWEN_Buffer_GetUsedBytes(fbuf),
sigbuf);
if (rv) {
DBG_ERROR(GWEN_LOGDOMAIN, "Could not sign file data");
return 3;
}
GWEN_Buffer_free(fbuf);

b64buf=GWEN_Buffer_new(0, 256, 0, 1);
rv=GWEN_Base64_Encode((unsigned char*)(GWEN_Buffer_GetStart(sigbuf)),
GWEN_Buffer_GetUsedBytes(sigbuf),
b64buf, 0);
if (rv) {
DBG_ERROR(GWEN_LOGDOMAIN, "Could not base64-encode signature");
GWEN_Buffer_free(b64buf);
GWEN_Buffer_free(sigbuf);
return 3;
}
GWEN_Buffer_free(sigbuf);

fprintf(f, "%s\t%s\n", inFile, GWEN_Buffer_GetStart(b64buf));
GWEN_Buffer_free(b64buf);

return 0;
}





int signFiles(GWEN_DB_NODE *dbArgs, int argc, char **argv) {
GWEN_DB_NODE *db;
const char *outFile;
const char *inFile;
const char *ttype;
const char *tname;
const char *padding;
const char *hashing;
int context;
GWEN_CRYPTTOKEN_HASHALGO ha=GWEN_CryptToken_HashAlgo_RMD160;
GWEN_CRYPTTOKEN_PADDALGO pa=GWEN_CryptToken_PaddAlgo_ANSIX9_23;
GWEN_PLUGIN_MANAGER *pm;
GWEN_PLUGIN *pl;
GWEN_CRYPTTOKEN *ct;
GWEN_CRYPTTOKEN_CONTEXT *ctx;
int rv;
int i;
FILE *f;
const GWEN_ARGS args[]={
{
GWEN_ARGS_FLAGS_HAS_ARGUMENT, /* flags */
GWEN_ArgsTypeChar, /* type */
"outfile", /* name */
0, /* minnum */
1, /* maxnum */
"o", /* short option */
"outfile", /* long option */
"Specify the output file", /* short description */
"Specify the output file" /* long description */
},
{
GWEN_ARGS_FLAGS_HAS_ARGUMENT, /* flags */
GWEN_ArgsTypeChar, /* type */
"tokenType", /* name */
1, /* minnum */
1, /* maxnum */
"t", /* short option */
"ttype", /* long option */
"Specify the crypt token type", /* short description */
"Specify the crypt token type" /* long description */
},
{
GWEN_ARGS_FLAGS_HAS_ARGUMENT, /* flags */
GWEN_ArgsTypeChar, /* type */
"tokenName", /* name */
0, /* minnum */
1, /* maxnum */
"n", /* short option */
"tname", /* long option */
"Specify the crypt token name", /* short description */
"Specify the crypt token name" /* long description */
},
{
GWEN_ARGS_FLAGS_HAS_ARGUMENT, /* flags */
GWEN_ArgsTypeChar, /* type */
"context", /* name */
0, /* minnum */
1, /* maxnum */
"c", /* short option */
"context", /* long option */
"Specify the crypt token context", /* short description */
"Specify the crypt token context" /* long description */
},
{
GWEN_ARGS_FLAGS_HAS_ARGUMENT, /* flags */
GWEN_ArgsTypeChar, /* type */
"paddAlgo", /* name */
0, /* minnum */
1, /* maxnum */
0, /* short option */
"padding", /* long option */
"Specify the padding to be used", /* short description */
"Specify the padding to be used" /* long description */
},
{
GWEN_ARGS_FLAGS_HAS_ARGUMENT, /* flags */
GWEN_ArgsTypeChar, /* type */
"hashAlgo", /* name */
0, /* minnum */
1, /* maxnum */
0, /* short option */
"hashing", /* long option */
"Specify the hashing to be used", /* short description */
"Specify the hashing to be used" /* long description */
},
{
GWEN_ARGS_FLAGS_HELP | GWEN_ARGS_FLAGS_LAST, /* flags */
GWEN_ArgsTypeInt, /* type */
"help", /* name */
0, /* minnum */
0, /* maxnum */
"h", /* short option */
"help", /* long option */
"Show this help screen", /* short description */
"Show this help screen" /* long description */
}
};

db=GWEN_DB_GetGroup(dbArgs, GWEN_DB_FLAGS_DEFAULT, "local");
rv=GWEN_Args_Check(argc, argv, 1,
GWEN_ARGS_MODE_ALLOW_FREEPARAM,
args,
db);
if (rv==GWEN_ARGS_RESULT_ERROR) {
fprintf(stderr, "ERROR: Could not parse arguments\n");
return 1;
}
else if (rv==GWEN_ARGS_RESULT_HELP) {
GWEN_BUFFER *ubuf;

ubuf=GWEN_Buffer_new(0, 1024, 0, 1);
if (GWEN_Args_Usage(args, ubuf, GWEN_ArgsOutTypeTXT)) {
fprintf(stderr, "ERROR: Could not create help string\n");
return 1;
}
fprintf(stderr, "%s\n", GWEN_Buffer_GetStart(ubuf));
GWEN_Buffer_free(ubuf);
return 0;
}

/* check for input files */
inFile=GWEN_DB_GetCharValue(db, "params", 0, 0);
if (!inFile) {
DBG_ERROR(GWEN_LOGDOMAIN, "No input files specified");
return 1;
}

/* open output file, if necessary */
outFile=GWEN_DB_GetCharValue(db, "outFile", 0, 0);
if (outFile && *outFile) {
f=fopen(outFile, "w+");
if (!f) {
DBG_ERROR(GWEN_LOGDOMAIN,
"ERROR on fopen(%s): %s",
outFile,
strerror(errno));
return 2;
}
}
else
f=stdout;

ttype=GWEN_DB_GetCharValue(db, "tokenType", 0, 0);
assert(ttype);

tname=GWEN_DB_GetCharValue(db, "tokenName", 0, 0);
hashing=GWEN_DB_GetCharValue(db, "hashalgo", 0, "rmd160");
if (hashing) {
ha=GWEN_CryptToken_HashAlgo_fromString(hashing);
if (ha==GWEN_CryptToken_HashAlgo_Unknown) {
DBG_ERROR(GWEN_LOGDOMAIN,
"Unknown hashing algo \"%s\"",
hashing);
return 1;
}
}
padding=GWEN_DB_GetCharValue(db, "paddalgo", 0, "ansix9_23");
if (padding) {
pa=GWEN_CryptToken_PaddAlgo_fromString(padding);
if (pa==GWEN_CryptToken_PaddAlgo_Unknown) {
DBG_ERROR(GWEN_LOGDOMAIN,
"Unknown padding algo \"%s\"",
padding);
return 1;
}
}


/* get crypt token */
pm=GWEN_PluginManager_FindPluginManager("crypttoken");
if (pm==0) {
DBG_ERROR(0, "Plugin manager not found");
return 3;
}

pl=GWEN_PluginManager_GetPlugin(pm, ttype);
if (pl==0) {
DBG_ERROR(0, "Plugin not found");
return 3;
}
DBG_ERROR(0, "Plugin found");

ct=GWEN_CryptToken_Plugin_CreateToken(pl, 0, tname);
if (ct==0) {
DBG_ERROR(0, "Could not create crypt token");
return 3;
}

/* open crypt token for use */
rv=GWEN_CryptToken_Open(ct, 0);
if (rv) {
DBG_ERROR(0, "Could not open token");
return 3;
}

/* get context */
context=GWEN_DB_GetIntValue(db, "context", 0, 0);
if (context==0) {
GWEN_CRYPTTOKEN_CONTEXT_LIST *ctxl;
const GWEN_CRYPTTOKEN_CONTEXT *cctx;

/* select the first context */
ctxl=GWEN_CryptToken_Context_List_new();
rv=GWEN_CryptToken_FillContextList(ct, ctxl);
if (rv) {
DBG_ERROR(0, "Could not get context list");
GWEN_CryptToken_Close(ct);
return 3;
}

cctx=GWEN_CryptToken_Context_List_First(ctxl);
if (!cctx) {
DBG_ERROR(GWEN_LOGDOMAIN, "No context found");
GWEN_CryptToken_Close(ct);
return 3;
}
ctx=GWEN_CryptToken_Context_dup(cctx);
}
else {
const GWEN_CRYPTTOKEN_CONTEXT *cctx;

cctx=GWEN_CryptToken_GetContextById(ct, context);
if (!cctx) {
DBG_ERROR(GWEN_LOGDOMAIN, "Context %d found", context);
GWEN_CryptToken_Close(ct);
return 3;
}
ctx=GWEN_CryptToken_Context_dup(cctx);
}
assert(ctx);

if (1) {
const GWEN_CRYPTTOKEN_SIGNINFO *csi;
GWEN_CRYPTTOKEN_SIGNINFO *si;

csi=GWEN_CryptToken_Context_GetSignInfo(ctx);
if (!csi) {
DBG_ERROR(GWEN_LOGDOMAIN, "No sign info stored in context %d",
GWEN_CryptToken_Context_GetId(ctx));
GWEN_CryptToken_Close(ct);
return 3;
}

si=GWEN_CryptToken_SignInfo_dup(csi);
GWEN_CryptToken_SignInfo_SetHashAlgo(si, ha);
GWEN_CryptToken_SignInfo_SetPaddAlgo(si, pa);

GWEN_CryptToken_Context_SetSignInfo(ctx, si);
GWEN_CryptToken_SignInfo_free(si);
}

/* sign every input file */
for (i=0; ; i++) {
inFile=GWEN_DB_GetCharValue(db, "params", i, 0);
if (!inFile)
break;
rv=signFile(ct, ctx, inFile, f);
if (rv) {
return 3;
}
}

/* close output file if necessary */
if (outFile) {
if (fclose(f)) {
DBG_ERROR(GWEN_LOGDOMAIN,
"ERROR on fclose(%s): %s",
outFile,
strerror(errno));
return 2;
}
}

return 0;
}



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