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*
* Side effects:
* Sets result to message digest or error message
*
*-------------------------------------------------------------------
*/
static int DigestMain(int type, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
int idx, format = HEX_FORMAT, res = TCL_OK, flags = 0;
const char *digestName, *channel = NULL;
Tcl_Obj *cmdObj = NULL, *dataObj = NULL, *fileObj = NULL, *keyObj = NULL;
unsigned char *cipherName = NULL;
const EVP_MD *md = NULL;
const EVP_CIPHER *cipher = NULL;
/* Clear interp result */
Tcl_ResetResult(interp);
/* Validate arg count */
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*
* Side effects:
* Sets result to message digest or error message
*
*-------------------------------------------------------------------
*/
static int DigestMain(int type, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
int idx, start = 1, format = HEX_FORMAT, res = TCL_OK;
Tcl_Obj *cmdObj = NULL, *dataObj = NULL, *fileObj = NULL, *keyObj = NULL;
const char *digestName = NULL, *cipherName = NULL, *channel = NULL, *opt;
const EVP_MD *md = NULL;
const EVP_CIPHER *cipher = NULL;
/* Clear interp result */
Tcl_ResetResult(interp);
/* Validate arg count */
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digestName = Tcl_GetStringFromObj(objv[1],NULL);
if ((md = EVP_get_digestbyname(digestName)) != NULL) {
return DigestDataHandler(interp, objv[2], md, NULL, HEX_FORMAT | TYPE_MD, NULL);
} else {
Tcl_AppendResult(interp, "Invalid digest \"", digestName, "\"", NULL);
return TCL_ERROR;
}
}
/* Get options */
for (idx = 1; idx < objc; idx++) {
char *opt = Tcl_GetStringFromObj(objv[idx], NULL);
if (opt[0] != '-') {
break;
}
OPTFLAG("-bin", format, BIN_FORMAT);
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digestName = Tcl_GetStringFromObj(objv[1],NULL);
if ((md = EVP_get_digestbyname(digestName)) != NULL) {
return DigestDataHandler(interp, objv[2], md, NULL, HEX_FORMAT | TYPE_MD, NULL);
} else {
Tcl_AppendResult(interp, "Invalid digest \"", digestName, "\"", NULL);
return TCL_ERROR;
}
} else {
/* Special case if first arg is digest, cipher, or mac */
opt = Tcl_GetStringFromObj(objv[start], NULL);
if (opt[0] != '-') {
if (type == TYPE_MD || type == TYPE_HMAC) {
digestName = opt;
start++;
} else if (type == TYPE_CMAC) {
cipherName = opt;
start++;
} else if (type == TYPE_MAC) {
macName = opt;
start++;
}
}
}
/* Get options */
for (idx = start; idx < objc; idx++) {
char *opt = Tcl_GetStringFromObj(objv[idx], NULL);
if (opt[0] != '-') {
break;
}
OPTFLAG("-bin", format, BIN_FORMAT);
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res = DigestFileHandler(interp, fileObj, md, cipher, format | type, keyObj);
} else if (channel != NULL) {
res = DigestChannelHandler(interp, channel, md, cipher, format | type, keyObj);
} else if (cmdObj != NULL) {
res = DigestCommandHandler(interp, cmdObj, md, cipher, format | type, keyObj);
} else if (dataObj != NULL) {
res = DigestDataHandler(interp, dataObj, md, cipher, format | type, keyObj);
}
return res;
}
/*
*-------------------------------------------------------------------
*
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res = DigestFileHandler(interp, fileObj, md, cipher, format | type, keyObj);
} else if (channel != NULL) {
res = DigestChannelHandler(interp, channel, md, cipher, format | type, keyObj);
} else if (cmdObj != NULL) {
res = DigestCommandHandler(interp, cmdObj, md, cipher, format | type, keyObj);
} else if (dataObj != NULL) {
res = DigestDataHandler(interp, dataObj, md, cipher, format | type, keyObj);
} else {
Tcl_AppendResult(interp, "No operation specified: Use -channel, -command, -data, or -file option", NULL);
res = TCL_ERROR;
}
return res;
}
/*
*-------------------------------------------------------------------
*
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