Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 1 | /* Relay UDT/all SCCP messages */ |
| 2 | /* |
| 3 | * (C) 2010-2011 by Holger Hans Peter Freyther <zecke@selfish.org> |
| 4 | * (C) 2010-2011 by On-Waves |
| 5 | * All Rights Reserved |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | #include <mtp_data.h> |
| 24 | #include <mtp_level3.h> |
| 25 | #include <mtp_pcap.h> |
| 26 | #include <thread.h> |
| 27 | #include <bsc_data.h> |
| 28 | #include <snmp_mtp.h> |
| 29 | #include <cellmgr_debug.h> |
Holger Hans Peter Freyther | 9cf11bc | 2011-01-17 15:53:06 +0100 | [diff] [blame] | 30 | #include <sctp_m2ua.h> |
Holger Hans Peter Freyther | a7bc3aa | 2011-02-16 16:12:07 +0100 | [diff] [blame] | 31 | #include <ss7_application.h> |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 32 | |
Holger Hans Peter Freyther | 0292127 | 2011-01-22 23:05:03 +0100 | [diff] [blame] | 33 | #include <osmocom/m2ua/m2ua_msg.h> |
| 34 | |
Harald Welte | ff397ed | 2011-05-08 10:29:23 +0200 | [diff] [blame] | 35 | #include <osmocom/core/talloc.h> |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 36 | |
Holger Hans Peter Freyther | 289436f | 2011-02-16 23:08:29 +0100 | [diff] [blame] | 37 | #include <osmocom/sccp/sccp.h> |
| 38 | |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 39 | #include <osmocom/vty/vty.h> |
| 40 | #include <osmocom/vty/telnet_interface.h> |
| 41 | |
| 42 | #include <sys/stat.h> |
| 43 | #include <sys/types.h> |
| 44 | |
| 45 | #include <fcntl.h> |
| 46 | #include <signal.h> |
| 47 | #include <stdio.h> |
| 48 | #include <stdlib.h> |
| 49 | #include <string.h> |
| 50 | #include <assert.h> |
| 51 | #include <unistd.h> |
| 52 | |
| 53 | #ifndef _GNU_SOURCE |
| 54 | #define _GNU_SOURCE |
| 55 | #endif |
| 56 | #include <getopt.h> |
| 57 | |
| 58 | #undef PACKAGE_NAME |
| 59 | #undef PACKAGE_VERSION |
| 60 | #undef PACKAGE_BUGREPORT |
| 61 | #undef PACKAGE_TARNAME |
| 62 | #undef PACKAGE_STRING |
| 63 | #include <cellmgr_config.h> |
| 64 | |
| 65 | static struct log_target *stderr_target; |
| 66 | |
Holger Hans Peter Freyther | 2d4891f | 2011-02-16 23:56:55 +0100 | [diff] [blame] | 67 | char *config = "osmo_stp.cfg"; |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 68 | |
Holger Hans Peter Freyther | 2ff47b8 | 2011-02-15 20:25:10 +0100 | [diff] [blame] | 69 | struct bsc_data *bsc; |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 70 | extern void cell_vty_init(void); |
Holger Hans Peter Freyther | 2d4891f | 2011-02-16 23:56:55 +0100 | [diff] [blame] | 71 | extern void handle_options(int argc, char **argv); |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 72 | |
Holger Hans Peter Freyther | 0452f22 | 2011-02-03 13:35:42 +0100 | [diff] [blame] | 73 | static struct mtp_link_set *find_link_set(struct bsc_data *bsc, |
| 74 | int len, const char *buf) |
| 75 | { |
Holger Hans Peter Freyther | 89fa11a | 2011-02-10 18:26:07 +0100 | [diff] [blame] | 76 | struct mtp_link_set *set; |
| 77 | |
Holger Hans Peter Freyther | 599c9a4 | 2011-02-15 11:18:38 +0100 | [diff] [blame] | 78 | llist_for_each_entry(set, &bsc->linksets, entry) |
Holger Hans Peter Freyther | 89fa11a | 2011-02-10 18:26:07 +0100 | [diff] [blame] | 79 | if (strncmp(buf, set->name, len) == 0) |
| 80 | return set; |
| 81 | |
Holger Hans Peter Freyther | 0452f22 | 2011-02-03 13:35:42 +0100 | [diff] [blame] | 82 | return NULL; |
| 83 | } |
| 84 | |
Harald Welte | ff397ed | 2011-05-08 10:29:23 +0200 | [diff] [blame] | 85 | static int inject_read_cb(struct osmo_fd *fd, unsigned int what) |
Holger Hans Peter Freyther | 0452f22 | 2011-02-03 13:35:42 +0100 | [diff] [blame] | 86 | { |
| 87 | struct msgb *msg; |
| 88 | struct m2ua_msg_part *data, *link; |
| 89 | struct bsc_data *bsc; |
| 90 | struct m2ua_msg *m2ua; |
| 91 | struct mtp_link_set *out_set; |
| 92 | uint8_t buf[4096]; |
| 93 | |
| 94 | bsc = fd->data; |
| 95 | |
| 96 | int rc = read(fd->fd, buf, sizeof(buf)); |
| 97 | if (rc <= 0) { |
| 98 | LOGP(DINP, LOGL_ERROR, "Failed to read from the console.\n"); |
| 99 | return -1; |
| 100 | } |
| 101 | |
Holger Hans Peter Freyther | ee63d7d | 2011-02-10 12:39:05 +0100 | [diff] [blame] | 102 | if (!bsc->allow_inject) { |
| 103 | LOGP(DINP, LOGL_ERROR, "Injecting messages is not allowed.\n"); |
| 104 | return -1; |
| 105 | } |
| 106 | |
Holger Hans Peter Freyther | 0452f22 | 2011-02-03 13:35:42 +0100 | [diff] [blame] | 107 | m2ua = m2ua_from_msg(rc, buf); |
| 108 | if (!m2ua) { |
| 109 | LOGP(DINP, LOGL_ERROR, "Failed to parse M2UA.\n"); |
| 110 | return -1; |
| 111 | } |
| 112 | |
| 113 | if (m2ua->hdr.msg_class == M2UA_CLS_MAUP && m2ua->hdr.msg_type == M2UA_MAUP_DATA) { |
| 114 | data = m2ua_msg_find_tag(m2ua, M2UA_TAG_DATA); |
| 115 | if (!data) { |
| 116 | LOGP(DINP, LOGL_ERROR, "MAUP Data without data.\n"); |
| 117 | goto exit; |
| 118 | } |
| 119 | |
| 120 | if (data->len > 2048) { |
| 121 | LOGP(DINP, LOGL_ERROR, "Data is too big for this configuration.\n"); |
| 122 | goto exit; |
| 123 | } |
| 124 | |
| 125 | link = m2ua_msg_find_tag(m2ua, MUA_TAG_IDENT_TEXT); |
| 126 | if (!link) { |
| 127 | LOGP(DINP, LOGL_ERROR, "Interface Identifier Text is mandantory.\n"); |
| 128 | goto exit; |
| 129 | } |
| 130 | |
| 131 | if (link->len > 255) { |
| 132 | LOGP(DINP, LOGL_ERROR, "Spec violation. Ident text should be shorter than 255.\n"); |
| 133 | goto exit; |
| 134 | } |
| 135 | |
| 136 | out_set = find_link_set(bsc, link->len, (const char *) link->dat); |
| 137 | if (!out_set) { |
| 138 | LOGP(DINP, LOGL_ERROR, "Identified linkset does not exist.\n"); |
| 139 | goto exit; |
| 140 | } |
| 141 | |
| 142 | msg = msgb_alloc(2048, "inject-data"); |
| 143 | if (!msg) { |
| 144 | LOGP(DINP, LOGL_ERROR, "Failed to allocate storage.\n"); |
| 145 | goto exit; |
| 146 | } |
| 147 | |
| 148 | msg->l2h = msgb_put(msg, data->len); |
| 149 | memcpy(msg->l2h, data->dat, data->len); |
| 150 | |
| 151 | /* we are diretcly going to the output. no checking of anything */ |
| 152 | if (mtp_link_set_send(out_set, msg) != 0) { |
| 153 | LOGP(DINP, LOGL_ERROR, "Failed to send message.\n"); |
| 154 | msgb_free(msg); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | exit: |
| 159 | m2ua_msg_free(m2ua); |
| 160 | return 0; |
| 161 | } |
| 162 | |
| 163 | static int inject_init(struct bsc_data *bsc) |
| 164 | { |
| 165 | int fd; |
| 166 | struct sockaddr_in addr; |
| 167 | |
| 168 | fd = socket(PF_INET, SOCK_DGRAM, 0); |
| 169 | if (fd < 0) |
| 170 | return -1; |
| 171 | |
| 172 | memset(&addr, 0, sizeof(addr)); |
| 173 | addr.sin_family = AF_INET; |
| 174 | addr.sin_port = htons(5001); |
| 175 | |
| 176 | if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) != 0) { |
| 177 | LOGP(DINP, LOGL_ERROR, "Failed to bind to port 5001.\n"); |
| 178 | close(fd); |
| 179 | return -1; |
| 180 | } |
| 181 | |
| 182 | bsc->inject_fd.fd = fd; |
| 183 | bsc->inject_fd.when = BSC_FD_READ; |
| 184 | bsc->inject_fd.cb = inject_read_cb; |
| 185 | bsc->inject_fd.data = bsc; |
| 186 | |
Harald Welte | ff397ed | 2011-05-08 10:29:23 +0200 | [diff] [blame] | 187 | if (osmo_fd_register(&bsc->inject_fd) != 0) { |
Holger Hans Peter Freyther | 0452f22 | 2011-02-03 13:35:42 +0100 | [diff] [blame] | 188 | LOGP(DINP, LOGL_ERROR, "Failed to register.\n"); |
| 189 | close(fd); |
| 190 | return -1; |
| 191 | } |
| 192 | |
| 193 | return 0; |
| 194 | } |
| 195 | |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 196 | int main(int argc, char **argv) |
| 197 | { |
| 198 | int rc; |
Holger Hans Peter Freyther | a7bc3aa | 2011-02-16 16:12:07 +0100 | [diff] [blame] | 199 | struct ss7_application *app; |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 200 | |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 201 | thread_init(); |
| 202 | |
| 203 | log_init(&log_info); |
| 204 | stderr_target = log_target_create_stderr(); |
| 205 | log_add_target(stderr_target); |
| 206 | |
| 207 | /* enable filters */ |
| 208 | log_set_all_filter(stderr_target, 1); |
| 209 | log_set_category_filter(stderr_target, DINP, 1, LOGL_INFO); |
| 210 | log_set_category_filter(stderr_target, DSCCP, 1, LOGL_INFO); |
| 211 | log_set_category_filter(stderr_target, DMSC, 1, LOGL_INFO); |
| 212 | log_set_category_filter(stderr_target, DMGCP, 1, LOGL_INFO); |
| 213 | log_set_print_timestamp(stderr_target, 1); |
| 214 | log_set_use_color(stderr_target, 0); |
| 215 | |
| 216 | sccp_set_log_area(DSCCP); |
Holger Hans Peter Freyther | 0292127 | 2011-01-22 23:05:03 +0100 | [diff] [blame] | 217 | m2ua_set_log_area(DM2UA); |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 218 | |
Holger Hans Peter Freyther | 2ff47b8 | 2011-02-15 20:25:10 +0100 | [diff] [blame] | 219 | bsc = bsc_data_create(); |
| 220 | if (!bsc) |
| 221 | return -1; |
Holger Hans Peter Freyther | 2ff47b8 | 2011-02-15 20:25:10 +0100 | [diff] [blame] | 222 | |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 223 | handle_options(argc, argv); |
| 224 | |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 225 | srand(time(NULL)); |
| 226 | |
Holger Hans Peter Freyther | cfe9d71 | 2011-02-17 20:32:09 +0100 | [diff] [blame] | 227 | cell_vty_init(); |
Holger Hans Peter Freyther | cfe9d71 | 2011-02-17 20:32:09 +0100 | [diff] [blame] | 228 | rc = telnet_init(NULL, NULL, 4242); |
| 229 | if (rc < 0) |
| 230 | return rc; |
| 231 | |
| 232 | if (inject_init(bsc) != 0) { |
| 233 | LOGP(DINP, LOGL_NOTICE, "Failed to initialize inject interface.\n"); |
| 234 | return -1; |
| 235 | } |
| 236 | |
Holger Hans Peter Freyther | 7176030 | 2011-02-22 20:57:08 +0100 | [diff] [blame] | 237 | /* now bind the the UDP and SCTP port */ |
| 238 | if (link_global_init(&bsc->udp_data) != 0) { |
| 239 | LOGP(DINP, LOGL_ERROR, "Global UDP input init failed.\n"); |
Holger Hans Peter Freyther | cfe9d71 | 2011-02-17 20:32:09 +0100 | [diff] [blame] | 240 | return -1; |
Holger Hans Peter Freyther | 7176030 | 2011-02-22 20:57:08 +0100 | [diff] [blame] | 241 | } |
Holger Hans Peter Freyther | cfe9d71 | 2011-02-17 20:32:09 +0100 | [diff] [blame] | 242 | |
Holger Hans Peter Freyther | 7176030 | 2011-02-22 20:57:08 +0100 | [diff] [blame] | 243 | bsc->m2ua_trans = sctp_m2ua_transp_create(bsc); |
Holger Hans Peter Freyther | cfe9d71 | 2011-02-17 20:32:09 +0100 | [diff] [blame] | 244 | if (!bsc->m2ua_trans) { |
| 245 | LOGP(DINP, LOGL_ERROR, "Failed to create SCTP transport.\n"); |
| 246 | return -1; |
| 247 | } |
| 248 | |
Holger Hans Peter Freyther | 7176030 | 2011-02-22 20:57:08 +0100 | [diff] [blame] | 249 | if (vty_read_config_file(config, NULL) < 0) { |
| 250 | fprintf(stderr, "Failed to read the VTY config.\n"); |
| 251 | return -1; |
| 252 | } |
Holger Hans Peter Freyther | 9cf11bc | 2011-01-17 15:53:06 +0100 | [diff] [blame] | 253 | |
Holger Hans Peter Freyther | 7176030 | 2011-02-22 20:57:08 +0100 | [diff] [blame] | 254 | if (link_global_bind(&bsc->udp_data, bsc->udp_src_port) != 0) { |
| 255 | LOGP(DINP, LOGL_ERROR, "Global UDP bind failed.\n"); |
| 256 | return -1; |
| 257 | } |
Holger Hans Peter Freyther | a7bc3aa | 2011-02-16 16:12:07 +0100 | [diff] [blame] | 258 | |
Holger Hans Peter Freyther | 7176030 | 2011-02-22 20:57:08 +0100 | [diff] [blame] | 259 | if (sctp_m2ua_transport_bind(bsc->m2ua_trans, "0.0.0.0", bsc->m2ua_src_port) != 0) { |
| 260 | LOGP(DINP, LOGL_ERROR, |
| 261 | "Failed to bind on port %d\n", bsc->m2ua_src_port); |
| 262 | return -1; |
| 263 | } |
| 264 | |
| 265 | /* start all apps */ |
| 266 | llist_for_each_entry(app, &bsc->apps, entry) { |
| 267 | LOGP(DINP, LOGL_NOTICE, |
| 268 | "Going to start app %d/%s.\n", app->nr, app->name); |
| 269 | ss7_application_start(app); |
| 270 | } |
Holger Hans Peter Freyther | 9cf11bc | 2011-01-17 15:53:06 +0100 | [diff] [blame] | 271 | |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 272 | while (1) { |
Harald Welte | ff397ed | 2011-05-08 10:29:23 +0200 | [diff] [blame] | 273 | osmo_select_main(0); |
Holger Hans Peter Freyther | a93b83b | 2011-01-17 15:21:06 +0100 | [diff] [blame] | 274 | } |
| 275 | |
| 276 | return 0; |
| 277 | } |
| 278 | |