b16641e30c
This is designed to work with a server that follows this: struct sockaddr_un addr = { .sun_family = AF_UNIX, .sun_path = "/var/run/wireguard/wguserspace0.sock" }; int fd, ret; ssize_t len; socklen_t socklen; struct wgdevice *device; fd = socket(AF_UNIX, SOCK_DGRAM, 0); if (fd < 0) exit(1); if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) exit(1); for (;;) { /* First we look at how big the next message is, so we know how much to * allocate. Note on BSD you can instead use ioctl(fd, FIONREAD, &len). */ len = recv(fd, NULL, 0, MSG_PEEK | MSG_TRUNC); if (len < 0) { handle_error(); continue; } /* Next we allocate a buffer for the received data. */ device = NULL; if (len) { device = malloc(len); if (!device) { handle_error(); continue; } } /* Finally we receive the data, storing too the return address. */ socklen = sizeof(addr); len = recvfrom(fd, device, len, 0, (struct sockaddr *)&addr, (socklen_t *)&socklen); if (len < 0) { handle_error(); free(device); continue; } if (!len) { /* If len is zero, it's a "get" request, so we send our device back. */ device = get_current_wireguard_device(&len); sendto(fd, device, len, 0, (struct sockaddr *)&addr, socklen); } else { /* Otherwise, we just received a wgdevice, so we should "set" and send back the return status. */ ret = set_current_wireguard_device(device); sendto(fd, &ret, sizeof(ret), 0, (struct sockaddr *)&addr, socklen); free(device); } } Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
36 lines
895 B
C
36 lines
895 B
C
/* Copyright 2015-2016 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "subcommands.h"
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#include "config.h"
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#include "kernel.h"
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int set_main(int argc, char *argv[])
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{
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struct wgdevice *device = NULL;
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int ret = 1;
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if (argc < 3) {
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fprintf(stderr, "Usage: %s %s <interface> [listen-port <port>] [private-key <file path>] [peer <base64 public key> [remove] [endpoint <ip>:<port>] [persistent-keepalive <interval seconds>] [allowed-ips <ip1>/<cidr1>[,<ip2>/<cidr2>]...] ]...\n", PROG_NAME, argv[0]);
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return 1;
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}
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if (!config_read_cmd(&device, argv + 2, argc - 2))
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goto cleanup;
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strncpy(device->interface, argv[1], IFNAMSIZ - 1);
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device->interface[IFNAMSIZ - 1] = 0;
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if (set_device(device) != 0) {
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perror("Unable to set device");
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goto cleanup;
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}
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ret = 0;
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cleanup:
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free(device);
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return ret;
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}
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