81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include "config.h"
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#include "ttymode.h"
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#include <stdlib.h>
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#include <string.h>
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guac_ssh_ttymodes guac_ssh_ttymodes_init() {
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/* Simple allocation for a placeholder */
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guac_ssh_ttymode* ttymode_array = malloc(1);
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/* Set up the initial data structure. */
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guac_ssh_ttymodes empty_modes = {
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ttymode_array,
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0
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};
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return empty_modes;
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}
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void guac_ssh_ttymodes_add(guac_ssh_ttymodes *tty_modes, char opcode, uint32_t value) {
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tty_modes->num_opcodes++;
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tty_modes->ttymode_array = realloc(tty_modes->ttymode_array, sizeof(guac_ssh_ttymode) * tty_modes->num_opcodes);
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tty_modes->ttymode_array[tty_modes->num_opcodes - 1].opcode = opcode;
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tty_modes->ttymode_array[tty_modes->num_opcodes - 1].value = value;
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}
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int guac_ssh_ttymodes_size(guac_ssh_ttymodes *tty_modes) {
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/* Each opcode pair is 5 bytes (1 opcode, 4 value)
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Add one for the ending opcode */
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return (tty_modes->num_opcodes * 5) + 1;
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}
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char* guac_ssh_ttymodes_to_array(guac_ssh_ttymodes *tty_modes) {
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/* Total data size should be number of tracked opcodes
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plus one final byte for the TTY_OP_END code. */
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int data_size = (tty_modes->num_opcodes * 5) + 1;
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char* temp = malloc(data_size);
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/* Loop through the array based on number of tracked
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opcodes and convert each one. */
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for (int i = 0; i < tty_modes->num_opcodes; i++) {
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int idx = i * 5;
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uint32_t value = tty_modes->ttymode_array[i].value;
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/* Opcode goes in first byte. */
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temp[idx] = tty_modes->ttymode_array[i].opcode;
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/* Convert 32-bit int to individual bytes. */
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temp[idx+1] = (value >> 24) & 0xFF;
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temp[idx+2] = (value >> 16) & 0xFF;
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temp[idx+3] = (value >> 8) & 0xFF;
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temp[idx+4] = value & 0xFF;
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}
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/* Add the ending opcode */
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temp[data_size - 1] = GUAC_SSH_TTY_OP_END;
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return temp;
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}
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