mirror of git://git.zx2c4.com/wireguard-tools
99 lines
2.0 KiB
C
99 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR MIT
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/*
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* Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "containers.h"
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#include "ipc.h"
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struct string_list {
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char *buffer;
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size_t len;
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size_t cap;
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};
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static int string_list_add(struct string_list *list, const char *str)
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{
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size_t len = strlen(str) + 1;
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if (len == 1)
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return 0;
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if (len >= list->cap - list->len) {
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char *new_buffer;
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size_t new_cap = list->cap * 2;
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if (new_cap < list->len + len + 1)
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new_cap = list->len + len + 1;
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new_buffer = realloc(list->buffer, new_cap);
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if (!new_buffer)
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return -errno;
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list->buffer = new_buffer;
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list->cap = new_cap;
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}
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memcpy(list->buffer + list->len, str, len);
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list->len += len;
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list->buffer[list->len] = '\0';
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return 0;
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}
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#include "ipc-uapi.h"
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#if defined(__linux__)
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#include "ipc-linux.h"
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#elif defined(__OpenBSD__)
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#include "ipc-openbsd.h"
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#elif defined(__FreeBSD__)
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#include "ipc-freebsd.h"
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#elif defined(_WIN32)
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#include "ipc-windows.h"
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#endif
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/* first\0second\0third\0forth\0last\0\0 */
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char *ipc_list_devices(void)
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{
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struct string_list list = { 0 };
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int ret;
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#ifdef IPC_SUPPORTS_KERNEL_INTERFACE
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ret = kernel_get_wireguard_interfaces(&list);
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if (ret < 0)
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goto cleanup;
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#endif
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ret = userspace_get_wireguard_interfaces(&list);
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if (ret < 0)
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goto cleanup;
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cleanup:
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errno = -ret;
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if (errno) {
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free(list.buffer);
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return NULL;
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}
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return list.buffer ?: strdup("\0");
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}
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int ipc_get_device(struct wgdevice **dev, const char *iface)
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{
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#ifdef IPC_SUPPORTS_KERNEL_INTERFACE
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if (userspace_has_wireguard_interface(iface))
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return userspace_get_device(dev, iface);
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return kernel_get_device(dev, iface);
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#else
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return userspace_get_device(dev, iface);
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#endif
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}
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int ipc_set_device(struct wgdevice *dev)
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{
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#ifdef IPC_SUPPORTS_KERNEL_INTERFACE
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if (userspace_has_wireguard_interface(dev->name))
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return userspace_set_device(dev);
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return kernel_set_device(dev);
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#else
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return userspace_set_device(dev);
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#endif
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}
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