ctl: fix rpc_scan return when "*" is used

- the rpc_scan function (both for binrpc and fifo) did return the
  wrong number of parameters when the newly introduced "*"
  modifier was used.
- for binrpcs, "*" switches to "nofault" mode only if the error is
  E_BINRPC_MORE_DATA or E_BINRPC_EOP (meaning no more data to read
  parameters from). All the other errors will generate faults,
  even with "*" in the format strings (e.g. parameter type
  mismatch, invalid value a.s.o.).

modules_s/ctl/binrpc_run.c

@@ -594,14 +594,17 @@ static int rpc_scan(struct binrpc_ctx* ctx, char* fmt, ...)
 	int err;
 	char* orig_fmt;
 	int nofault;
+	int modifiers;
 	
 	va_start(ap, fmt);
 	orig_fmt=fmt;
 	nofault = 0;
+	modifiers=0;
 	for (;*fmt; fmt++){
 		switch(*fmt){
 			case '*': /* start of optional parameters */
 				nofault = 1;
+				modifiers++;
 				break;
 			case 'b': /* bool */
 			case 't': /* time */
@@ -652,9 +655,9 @@ static int rpc_scan(struct binrpc_ctx* ctx, char* fmt, ...)
 		ctx->in.record_no++;
 	}
 	va_end(ap);
-	return (int)(fmt-orig_fmt);
+	return (int)(fmt-orig_fmt)-modifiers;
 error_read:
-	if(nofault==0)
+	if(nofault==0 || ((err!=E_BINRPC_MORE_DATA) && (err!=E_BINRPC_EOP)))
 		rpc_fault(ctx, 400, "error at parameter %d: expected %s type but"
 						" %s", ctx->in.record_no, rpc_type_name(v.type),
 						 binrpc_error(err));
@@ -675,7 +678,7 @@ error_inv_param:
 						*fmt);
 error_ret:
 	va_end(ap);
-	return -(int)(fmt-orig_fmt);
+	return -((int)(fmt-orig_fmt)-modifiers);
 }
 
 

modules_s/ctl/fifo_server.c

@@ -1347,12 +1347,14 @@ static int rpc_scan(rpc_ctx_t* ctx, char* fmt, ...)
 	int read;
 	str line;
 	int nofault;
+	int modifiers;
 
 	va_list ap;
 	va_start(ap, fmt);
 
 	nofault = 0;
 	read = 0;
+	modifiers=0;
 	while(*fmt) {
 		if (read_line(&line.s, &line.len, &ctx->read_h) < 0) {
 			va_end(ap);
@@ -1363,6 +1365,7 @@ static int rpc_scan(rpc_ctx_t* ctx, char* fmt, ...)
 		switch(*fmt) {
 		case '*': /* start of optional parameters */
 			nofault = 1;
+			modifiers++;
 			break;
 		case 'b': /* Bool */
 		case 't': /* Date and time */
@@ -1429,11 +1432,11 @@ static int rpc_scan(rpc_ctx_t* ctx, char* fmt, ...)
 		read++;
 	}
 	va_end(ap);
-	return read;
+	return read-modifiers;
 
  error:
 	va_end(ap);
-	return -read;
+	return -(read-modifiers);
 }