2 This file is part of GNUnet.
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 * @file vpn/gnunet-daemon-vpn.c
24 * @author Philipp Tölke
27 #include "gnunet_getopt_lib.h"
28 #include "gnunet_program_lib.h"
29 #include "gnunet_os_lib.h"
30 #include "gnunet-vpn-helper-p.h"
31 /* #include "gnunet_template_service.h" */
39 struct GNUNET_DISK_PipeHandle* helper_in;
40 struct GNUNET_DISK_PipeHandle* helper_out;
41 const struct GNUNET_DISK_FileHandle* fh_from_helper;
43 struct GNUNET_SCHEDULER_Handle *sched; // TODO CG: is that right? Do I have to carry it around myself?
48 static void cleanup(void* cls, const struct GNUNET_SCHEDULER_TaskContext* tskctx) {
49 struct vpn_cls* mycls = (struct vpn_cls*) cls;
50 if (tskctx->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN) {
51 PLIBC_KILL(mycls->helper_pid, SIGTERM);
52 GNUNET_OS_process_wait(mycls->helper_pid);
56 static void helper_read(void* cls, const struct GNUNET_SCHEDULER_TaskContext* tsdkctx) {
57 struct vpn_cls* mycls = (struct vpn_cls*) cls;
58 struct suid_packet_header hdr = { .size = 0 };
62 while (r < sizeof(struct suid_packet_header)) {
63 int t = GNUNET_DISK_file_read(mycls->fh_from_helper, &hdr, sizeof(struct suid_packet_header));
65 fprintf(stderr, "Read error for header: %m\n");
71 fprintf(stderr, "Read %d bytes for the header. The 'size' is %x, that is %d\n", r, hdr.size, ntohl(hdr.size));
73 struct suid_packet *pkt = (struct suid_packet*) GNUNET_malloc(ntohl(hdr.size));
75 if (memcpy(pkt, &hdr, sizeof(struct suid_packet_header)) < 0) {
76 fprintf(stderr, "Memcpy: %m\n");
80 while (r < ntohl(pkt->hdr.size)) {
81 int t = GNUNET_DISK_file_read(mycls->fh_from_helper, (unsigned char*)pkt + r, ntohl(pkt->hdr.size) - r);
83 fprintf(stderr, "Read error for data: %m\n");
89 printf("read %d bytes. The first 87 are:\n\t", r);
91 for (r = 0; r < 87; r++)
92 printf("%02x ", pkt->data[r]);
97 GNUNET_SCHEDULER_add_read_file (mycls->sched, GNUNET_TIME_UNIT_FOREVER_REL, mycls->fh_from_helper, &helper_read, mycls);
101 * Main function that will be run by the scheduler.
104 * @param sched the scheduler to use
105 * @param args remaining command-line arguments
106 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
107 * @param cfg configuration
111 struct GNUNET_SCHEDULER_Handle *sched,
114 const struct GNUNET_CONFIGURATION_Handle *cfg) {
116 struct vpn_cls* mycls = (struct vpn_cls*) cls;
118 mycls->sched = sched;
120 GNUNET_SCHEDULER_add_delayed(sched, GNUNET_TIME_UNIT_FOREVER_REL, &cleanup, cls);
122 mycls->helper_in = GNUNET_DISK_pipe(1);
123 mycls->helper_out = GNUNET_DISK_pipe(1);
125 mycls->helper_pid = GNUNET_OS_start_process(mycls->helper_in, mycls->helper_out, "gnunet-vpn-helper", "gnunet-vpn-helper", NULL);
127 mycls->fh_from_helper = GNUNET_DISK_pipe_handle (mycls->helper_out, GNUNET_DISK_PIPE_END_READ);
129 GNUNET_SCHEDULER_add_read_file (sched, GNUNET_TIME_UNIT_FOREVER_REL, mycls->fh_from_helper, &helper_read, mycls);
134 * The main function to obtain template from gnunetd.
136 * @param argc number of arguments from the command line
137 * @param argv command line arguments
138 * @return 0 ok, 1 on error
141 main (int argc, char *const *argv)
143 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
144 GNUNET_GETOPT_OPTION_END
147 struct vpn_cls* cls = (struct vpn_cls*)malloc(sizeof(struct vpn_cls));
150 GNUNET_PROGRAM_run (argc,
153 gettext_noop ("help text"),
154 options, &run, cls)) ? ret : 1;
157 /* end of gnunet-daemon-vpn.c */