2 * Open AnyConnect (SSL + DTLS) client
4 * © 2008 David Woodhouse <dwmw2@infradead.org>
6 * Permission to use, copy, modify, and/or distribute this software
7 * for any purpose with or without fee is hereby granted, provided
8 * that the above copyright notice and this permission notice appear
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
12 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
13 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
14 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
15 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
16 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
17 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
18 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 #include <sys/select.h>
26 #include <arpa/inet.h>
28 #include "anyconnect.h"
30 void queue_packet(struct pkt **q, struct pkt *new)
39 int queue_new_packet(struct pkt **q, int type, void *buf, int len)
41 struct pkt *new = malloc(sizeof(struct pkt) + len);
48 memcpy(new->data, buf, len);
53 int vpn_add_pollfd(struct anyconnect_info *vpninfo, int fd, short events)
56 vpninfo->pfds = realloc(vpninfo->pfds, sizeof(struct pollfd) * vpninfo->nfds);
58 fprintf(stderr, "Failed to reallocate pfds\n");
61 vpninfo->pfds[vpninfo->nfds - 1].fd = fd;
62 vpninfo->pfds[vpninfo->nfds - 1].events = events;
64 return vpninfo->nfds - 1;
69 static void handle_sigint(int sig)
74 int vpn_mainloop(struct anyconnect_info *vpninfo)
77 memset(&sa, 0, sizeof(sa));
78 sa.sa_handler = handle_sigint;
80 sigaction(SIGINT, &sa, NULL);
81 while (!killed && !vpninfo->quit_reason) {
83 int timeout = INT_MAX;
85 if (vpninfo->dtls_fd != -1)
86 did_work += dtls_mainloop(vpninfo, &timeout);
88 did_work += ssl_mainloop(vpninfo, &timeout);
89 did_work += tun_mainloop(vpninfo, &timeout);
95 printf("Did no work; sleeping for %d ms...\n", timeout);
97 poll(vpninfo->pfds, vpninfo->nfds, timeout);
98 if (vpninfo->pfds[vpninfo->ssl_pfd].revents & POLL_HUP) {
99 fprintf(stderr, "Server closed connection!\n");
100 /* OpenSSL doesn't seem to cope properly with this... */
104 if (!vpninfo->quit_reason)
105 vpninfo->quit_reason = "Client received SIGINT";
107 ssl_bye(vpninfo, vpninfo->quit_reason);
109 if (vpninfo->vpnc_script) {
110 setenv("TUNDEV", vpninfo->ifname, 1);
111 setenv("reason", "disconnect", 1);
112 system(vpninfo->vpnc_script);