Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1 | #include "internal.h" |
| 2 | |
| 3 | #include <stdio.h> |
| 4 | #include <unistd.h> |
| 5 | #include <stdlib.h> |
| 6 | #include <errno.h> |
| 7 | #include <string.h> |
| 8 | #include <time.h> |
| 9 | #include <sys/fcntl.h> |
| 10 | #include <sys/socket.h> |
| 11 | #include <sys/ioctl.h> |
| 12 | #include <arpa/inet.h> |
| 13 | |
| 14 | #include <osmocom/core/select.h> |
Daniel Willmann | 6113525 | 2022-12-15 04:48:51 +0100 | [diff] [blame] | 15 | #include <osmocom/core/timer.h> |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 16 | #include <osmocom/gsm/tlv.h> |
| 17 | #include <osmocom/core/msgb.h> |
| 18 | #include <osmocom/core/logging.h> |
Harald Welte | 71d87b2 | 2011-07-18 14:49:56 +0200 | [diff] [blame] | 19 | #include <osmocom/core/talloc.h> |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 20 | #include <osmocom/abis/e1_input.h> |
| 21 | #include <osmocom/abis/ipaccess.h> |
| 22 | #include <osmocom/core/socket.h> |
Pablo Neira Ayuso | ef13269 | 2013-07-08 01:17:27 +0200 | [diff] [blame] | 23 | #include <osmocom/core/backtrace.h> |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 24 | |
| 25 | #include <osmocom/abis/ipa.h> |
| 26 | |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 27 | #define LOGIPA(link, level, fmt, args...) LOGP(DLINP, level, "%s:%u " fmt, link->addr, link->port, ## args) |
| 28 | |
Pablo Neira Ayuso | 88136fc | 2011-07-08 16:21:55 +0200 | [diff] [blame] | 29 | void ipa_msg_push_header(struct msgb *msg, uint8_t proto) |
| 30 | { |
| 31 | struct ipaccess_head *hh; |
| 32 | |
| 33 | msg->l2h = msg->data; |
| 34 | hh = (struct ipaccess_head *) msgb_push(msg, sizeof(*hh)); |
| 35 | hh->proto = proto; |
| 36 | hh->len = htons(msgb_l2len(msg)); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 37 | } |
| 38 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 39 | void ipa_client_conn_close(struct ipa_client_conn *link) |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 40 | { |
Daniel Willmann | 6113525 | 2022-12-15 04:48:51 +0100 | [diff] [blame] | 41 | osmo_timer_del(&link->timer); |
| 42 | |
Harald Welte | e68055b | 2013-06-30 14:21:54 +0200 | [diff] [blame] | 43 | /* be safe against multiple calls */ |
| 44 | if (link->ofd->fd != -1) { |
| 45 | osmo_fd_unregister(link->ofd); |
| 46 | close(link->ofd->fd); |
| 47 | link->ofd->fd = -1; |
| 48 | } |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 49 | msgb_free(link->pending_msg); |
| 50 | link->pending_msg = NULL; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 51 | } |
| 52 | |
Pau Espin Pedrol | 2775798 | 2018-08-28 17:32:29 +0200 | [diff] [blame] | 53 | static int ipa_client_read(struct ipa_client_conn *link) |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 54 | { |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 55 | struct osmo_fd *ofd = link->ofd; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 56 | struct msgb *msg; |
| 57 | int ret; |
| 58 | |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 59 | LOGIPA(link, LOGL_DEBUG, "message received\n"); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 60 | |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 61 | ret = ipa_msg_recv_buffered(ofd->fd, &msg, &link->pending_msg); |
Pau Espin Pedrol | 493c8e6 | 2018-08-28 16:46:39 +0200 | [diff] [blame] | 62 | if (ret <= 0) { |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 63 | if (ret == -EAGAIN) |
Pau Espin Pedrol | 2775798 | 2018-08-28 17:32:29 +0200 | [diff] [blame] | 64 | return 0; |
Pau Espin Pedrol | 493c8e6 | 2018-08-28 16:46:39 +0200 | [diff] [blame] | 65 | else if (ret == -EPIPE || ret == -ECONNRESET) |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 66 | LOGIPA(link, LOGL_ERROR, "lost connection with server\n"); |
Pau Espin Pedrol | 493c8e6 | 2018-08-28 16:46:39 +0200 | [diff] [blame] | 67 | else if (ret == 0) |
| 68 | LOGIPA(link, LOGL_ERROR, "connection closed with server\n"); |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 69 | ipa_client_conn_close(link); |
| 70 | if (link->updown_cb) |
| 71 | link->updown_cb(link, 0); |
Pau Espin Pedrol | 2775798 | 2018-08-28 17:32:29 +0200 | [diff] [blame] | 72 | return -EBADF; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 73 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 74 | if (link->read_cb) |
Pau Espin Pedrol | 2775798 | 2018-08-28 17:32:29 +0200 | [diff] [blame] | 75 | return link->read_cb(link, msg); |
| 76 | return 0; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 77 | } |
| 78 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 79 | static void ipa_client_write(struct ipa_client_conn *link) |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 80 | { |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 81 | if (link->write_cb) |
| 82 | link->write_cb(link); |
| 83 | } |
| 84 | |
Pablo Neira Ayuso | 8ad30c9 | 2011-09-08 13:29:06 +0200 | [diff] [blame] | 85 | static int ipa_client_write_default_cb(struct ipa_client_conn *link) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 86 | { |
| 87 | struct osmo_fd *ofd = link->ofd; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 88 | struct msgb *msg; |
| 89 | struct llist_head *lh; |
| 90 | int ret; |
| 91 | |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 92 | LOGIPA(link, LOGL_DEBUG, "sending data\n"); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 93 | |
| 94 | if (llist_empty(&link->tx_queue)) { |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 95 | osmo_fd_write_disable(ofd); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 96 | return 0; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 97 | } |
| 98 | lh = link->tx_queue.next; |
| 99 | llist_del(lh); |
| 100 | msg = llist_entry(lh, struct msgb, list); |
| 101 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 102 | ret = send(link->ofd->fd, msg->data, msg->len, 0); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 103 | if (ret < 0) { |
| 104 | if (errno == EPIPE || errno == ENOTCONN) { |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 105 | ipa_client_conn_close(link); |
| 106 | if (link->updown_cb) |
| 107 | link->updown_cb(link, 0); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 108 | } |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 109 | LOGIPA(link, LOGL_ERROR, "error to send\n"); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 110 | } |
| 111 | msgb_free(msg); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 112 | return 0; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 113 | } |
| 114 | |
Daniel Willmann | 6113525 | 2022-12-15 04:48:51 +0100 | [diff] [blame] | 115 | static void ipa_connect_failure(struct ipa_client_conn *link) |
| 116 | { |
| 117 | ipa_client_conn_close(link); |
| 118 | if (link->updown_cb) |
| 119 | link->updown_cb(link, 0); |
| 120 | } |
| 121 | |
Harald Welte | 7b6fc2e | 2011-08-19 21:58:48 +0200 | [diff] [blame] | 122 | static int ipa_client_fd_cb(struct osmo_fd *ofd, unsigned int what) |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 123 | { |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 124 | struct ipa_client_conn *link = ofd->data; |
Pau Espin Pedrol | 2775798 | 2018-08-28 17:32:29 +0200 | [diff] [blame] | 125 | int error, ret = 0; |
Harald Welte | 4301c37 | 2011-08-19 13:33:16 +0200 | [diff] [blame] | 126 | socklen_t len = sizeof(error); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 127 | |
| 128 | switch(link->state) { |
Pablo Neira Ayuso | c07a8e7 | 2011-06-21 19:50:04 +0200 | [diff] [blame] | 129 | case IPA_CLIENT_LINK_STATE_CONNECTING: |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 130 | ret = getsockopt(ofd->fd, SOL_SOCKET, SO_ERROR, &error, &len); |
| 131 | if (ret >= 0 && error > 0) { |
Daniel Willmann | 6113525 | 2022-12-15 04:48:51 +0100 | [diff] [blame] | 132 | ipa_connect_failure(link); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 133 | return 0; |
| 134 | } |
Daniel Willmann | 6113525 | 2022-12-15 04:48:51 +0100 | [diff] [blame] | 135 | |
| 136 | /* Stop the timer when connection succeeds, on failure it's deleted in |
| 137 | ipa_client_conn_close() called by ipa_connect_failure() above */ |
| 138 | osmo_timer_del(&link->timer); |
| 139 | |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 140 | osmo_fd_write_disable(ofd); |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 141 | LOGIPA(link, LOGL_NOTICE, "connection done\n"); |
Pablo Neira Ayuso | c07a8e7 | 2011-06-21 19:50:04 +0200 | [diff] [blame] | 142 | link->state = IPA_CLIENT_LINK_STATE_CONNECTED; |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 143 | if (link->updown_cb) |
| 144 | link->updown_cb(link, 1); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 145 | break; |
Pablo Neira Ayuso | c07a8e7 | 2011-06-21 19:50:04 +0200 | [diff] [blame] | 146 | case IPA_CLIENT_LINK_STATE_CONNECTED: |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 147 | if (what & OSMO_FD_READ) { |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 148 | LOGIPA(link, LOGL_DEBUG, "connected read\n"); |
Pau Espin Pedrol | 2775798 | 2018-08-28 17:32:29 +0200 | [diff] [blame] | 149 | ret = ipa_client_read(link); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 150 | } |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 151 | if (ret != -EBADF && (what & OSMO_FD_WRITE)) { |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 152 | LOGIPA(link, LOGL_DEBUG, "connected write\n"); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 153 | ipa_client_write(link); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 154 | } |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 155 | break; |
| 156 | default: |
| 157 | break; |
| 158 | } |
Daniel Willmann | 6113525 | 2022-12-15 04:48:51 +0100 | [diff] [blame] | 159 | return 0; |
| 160 | } |
| 161 | |
| 162 | /* Treat the connect timeout exactly like a connect failure */ |
| 163 | static void ipa_connect_timeout_cb(void *data) |
| 164 | { |
| 165 | struct ipa_client_conn *link = (struct ipa_client_conn *)data; |
| 166 | |
| 167 | LOGIPA(link, LOGL_NOTICE, "Connect timeout reached\n"); |
| 168 | ipa_connect_failure(link); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 169 | } |
| 170 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 171 | struct ipa_client_conn * |
| 172 | ipa_client_conn_create(void *ctx, struct e1inp_ts *ts, |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 173 | int priv_nr, const char *addr, uint16_t port, |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 174 | void (*updown_cb)(struct ipa_client_conn *link, int up), |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 175 | int (*read_cb)(struct ipa_client_conn *link, |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 176 | struct msgb *msgb), |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 177 | int (*write_cb)(struct ipa_client_conn *link), |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 178 | void *data) |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 179 | { |
Pau Espin Pedrol | b6e28bf | 2019-11-08 17:30:28 +0100 | [diff] [blame] | 180 | return ipa_client_conn_create2(ctx, ts, priv_nr, NULL, 0, addr, port, |
| 181 | updown_cb, read_cb, write_cb, data); |
| 182 | } |
| 183 | |
| 184 | struct ipa_client_conn * |
| 185 | ipa_client_conn_create2(void *ctx, struct e1inp_ts *ts, |
| 186 | int priv_nr, const char *loc_addr, uint16_t loc_port, |
| 187 | const char *rem_addr, uint16_t rem_port, |
| 188 | void (*updown_cb)(struct ipa_client_conn *link, int up), |
| 189 | int (*read_cb)(struct ipa_client_conn *link, |
| 190 | struct msgb *msgb), |
| 191 | int (*write_cb)(struct ipa_client_conn *link), |
| 192 | void *data) |
| 193 | { |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 194 | struct ipa_client_conn *ipa_link; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 195 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 196 | ipa_link = talloc_zero(ctx, struct ipa_client_conn); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 197 | if (!ipa_link) |
| 198 | return NULL; |
| 199 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 200 | if (ts) { |
Pablo Neira Ayuso | 00af772 | 2011-09-08 12:47:06 +0200 | [diff] [blame] | 201 | if (ts->line->driver == NULL) { |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 202 | talloc_free(ipa_link); |
| 203 | return NULL; |
| 204 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 205 | ipa_link->ofd = &ts->driver.ipaccess.fd; |
| 206 | } else { |
| 207 | ipa_link->ofd = talloc_zero(ctx, struct osmo_fd); |
| 208 | if (ipa_link->ofd == NULL) { |
| 209 | talloc_free(ipa_link); |
| 210 | return NULL; |
| 211 | } |
| 212 | } |
| 213 | |
Harald Welte | 6e831b7 | 2020-10-18 22:59:58 +0200 | [diff] [blame] | 214 | osmo_fd_setup(ipa_link->ofd, -1, OSMO_FD_READ|OSMO_FD_WRITE, ipa_client_fd_cb, ipa_link, priv_nr); |
Pablo Neira Ayuso | c07a8e7 | 2011-06-21 19:50:04 +0200 | [diff] [blame] | 215 | ipa_link->state = IPA_CLIENT_LINK_STATE_CONNECTING; |
Pau Espin Pedrol | b6e28bf | 2019-11-08 17:30:28 +0100 | [diff] [blame] | 216 | ipa_link->local_addr = talloc_strdup(ipa_link, loc_addr); |
| 217 | ipa_link->local_port = loc_port; |
| 218 | ipa_link->addr = talloc_strdup(ipa_link, rem_addr); |
| 219 | ipa_link->port = rem_port; |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 220 | ipa_link->updown_cb = updown_cb; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 221 | ipa_link->read_cb = read_cb; |
Daniel Willmann | 6113525 | 2022-12-15 04:48:51 +0100 | [diff] [blame] | 222 | osmo_timer_setup(&ipa_link->timer, ipa_connect_timeout_cb, ipa_link); |
| 223 | |
Pablo Neira Ayuso | 8ad30c9 | 2011-09-08 13:29:06 +0200 | [diff] [blame] | 224 | /* default to generic write callback if not set. */ |
| 225 | if (write_cb == NULL) |
| 226 | ipa_link->write_cb = ipa_client_write_default_cb; |
Pablo Neira Ayuso | 81ed759 | 2012-08-22 16:35:17 +0200 | [diff] [blame] | 227 | else |
| 228 | ipa_link->write_cb = write_cb; |
| 229 | |
Pablo Neira Ayuso | 2220a05 | 2011-09-08 18:43:31 +0200 | [diff] [blame] | 230 | if (ts) |
| 231 | ipa_link->line = ts->line; |
Pablo Neira Ayuso | e009f4a | 2011-06-23 13:36:34 +0200 | [diff] [blame] | 232 | ipa_link->data = data; |
Pablo Neira Ayuso | af3fed9 | 2011-06-23 20:42:19 +0200 | [diff] [blame] | 233 | INIT_LLIST_HEAD(&ipa_link->tx_queue); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 234 | |
| 235 | return ipa_link; |
| 236 | } |
| 237 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 238 | void ipa_client_conn_destroy(struct ipa_client_conn *link) |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 239 | { |
| 240 | talloc_free(link); |
| 241 | } |
| 242 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 243 | int ipa_client_conn_open(struct ipa_client_conn *link) |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 244 | { |
Daniel Willmann | 6113525 | 2022-12-15 04:48:51 +0100 | [diff] [blame] | 245 | return ipa_client_conn_open2(link, 30); |
| 246 | } |
| 247 | |
| 248 | int ipa_client_conn_open2(struct ipa_client_conn *link, unsigned int connect_timeout) |
| 249 | { |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 250 | int ret; |
| 251 | |
Daniel Willmann | f2c7603 | 2022-12-15 16:05:29 +0100 | [diff] [blame] | 252 | if (link->ofd->fd != -1) |
| 253 | return -EINVAL; |
| 254 | |
Harald Welte | e7e1b75 | 2014-08-17 21:41:34 +0200 | [diff] [blame] | 255 | link->state = IPA_CLIENT_LINK_STATE_CONNECTING; |
Pau Espin Pedrol | b6e28bf | 2019-11-08 17:30:28 +0100 | [diff] [blame] | 256 | ret = osmo_sock_init2(AF_INET, SOCK_STREAM, IPPROTO_TCP, |
| 257 | link->local_addr, link->local_port, |
Pablo Neira Ayuso | 9b3a33c | 2011-06-21 13:52:41 +0200 | [diff] [blame] | 258 | link->addr, link->port, |
Harald Welte | 6bcc32b | 2021-04-28 14:40:59 +0200 | [diff] [blame] | 259 | OSMO_SOCK_F_BIND|OSMO_SOCK_F_CONNECT|OSMO_SOCK_F_NONBLOCK| |
| 260 | OSMO_SOCK_F_DSCP(link->dscp) | OSMO_SOCK_F_PRIO(link->priority)); |
Harald Welte | 14dd30a | 2016-11-26 09:37:09 +0100 | [diff] [blame] | 261 | if (ret < 0) |
| 262 | return ret; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 263 | link->ofd->fd = ret; |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 264 | osmo_fd_write_enable(link->ofd); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 265 | if (osmo_fd_register(link->ofd) < 0) { |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 266 | close(ret); |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 267 | link->ofd->fd = -1; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 268 | return -EIO; |
| 269 | } |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 270 | |
Daniel Willmann | 6113525 | 2022-12-15 04:48:51 +0100 | [diff] [blame] | 271 | if (connect_timeout > 0) |
| 272 | osmo_timer_schedule(&link->timer, connect_timeout, 0); |
| 273 | |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 274 | return 0; |
| 275 | } |
| 276 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 277 | void ipa_client_conn_send(struct ipa_client_conn *link, struct msgb *msg) |
Pablo Neira Ayuso | af3fed9 | 2011-06-23 20:42:19 +0200 | [diff] [blame] | 278 | { |
| 279 | msgb_enqueue(&link->tx_queue, msg); |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 280 | osmo_fd_write_enable(link->ofd); |
Pablo Neira Ayuso | af3fed9 | 2011-06-23 20:42:19 +0200 | [diff] [blame] | 281 | } |
| 282 | |
Holger Hans Peter Freyther | 9087859 | 2015-01-18 17:50:05 +0100 | [diff] [blame] | 283 | size_t ipa_client_conn_clear_queue(struct ipa_client_conn *link) |
| 284 | { |
| 285 | size_t deleted = 0; |
| 286 | |
| 287 | while (!llist_empty(&link->tx_queue)) { |
| 288 | struct msgb *msg = msgb_dequeue(&link->tx_queue); |
| 289 | msgb_free(msg); |
| 290 | deleted += 1; |
| 291 | } |
| 292 | |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 293 | osmo_fd_write_disable(link->ofd); |
Holger Hans Peter Freyther | 9087859 | 2015-01-18 17:50:05 +0100 | [diff] [blame] | 294 | return deleted; |
| 295 | } |
| 296 | |
Harald Welte | 7b6fc2e | 2011-08-19 21:58:48 +0200 | [diff] [blame] | 297 | static int ipa_server_fd_cb(struct osmo_fd *ofd, unsigned int what) |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 298 | { |
Pablo Neira Ayuso | cdda0a8 | 2013-07-08 01:13:19 +0200 | [diff] [blame] | 299 | int fd, ret; |
Max | 480073a | 2019-01-20 12:43:45 +0100 | [diff] [blame] | 300 | char ipbuf[INET6_ADDRSTRLEN + 1]; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 301 | struct sockaddr_in sa; |
| 302 | socklen_t sa_len = sizeof(sa); |
| 303 | struct ipa_server_link *link = ofd->data; |
| 304 | |
Pablo Neira Ayuso | cdda0a8 | 2013-07-08 01:13:19 +0200 | [diff] [blame] | 305 | fd = accept(ofd->fd, (struct sockaddr *)&sa, &sa_len); |
| 306 | if (fd < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 307 | LOGP(DLINP, LOGL_ERROR, "failed to accept from origin " |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 308 | "peer, reason=`%s'\n", strerror(errno)); |
Pablo Neira Ayuso | cdda0a8 | 2013-07-08 01:13:19 +0200 | [diff] [blame] | 309 | return fd; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 310 | } |
Max | 480073a | 2019-01-20 12:43:45 +0100 | [diff] [blame] | 311 | |
| 312 | if (!link->addr) { |
| 313 | ret = osmo_sock_get_local_ip(fd, ipbuf, INET6_ADDRSTRLEN + 1); |
| 314 | if (ret == 0) |
| 315 | link->addr = talloc_strdup(link, ipbuf); |
| 316 | } |
| 317 | |
Max | 3a2aa09 | 2019-01-20 12:48:47 +0100 | [diff] [blame] | 318 | LOGIPA(link, LOGL_NOTICE, "accept()ed new link from %s:%u\n", |
| 319 | inet_ntoa(sa.sin_addr), ntohs(sa.sin_port)); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 320 | |
Harald Welte | 6bcc32b | 2021-04-28 14:40:59 +0200 | [diff] [blame] | 321 | /* make new fd inherit DSCP + priority of listen-socket */ |
| 322 | osmo_sock_set_dscp(fd, link->dscp); |
| 323 | osmo_sock_set_priority(fd, link->priority); |
| 324 | |
Pablo Neira Ayuso | cdda0a8 | 2013-07-08 01:13:19 +0200 | [diff] [blame] | 325 | ret = link->accept_cb(link, fd); |
| 326 | if (ret < 0) { |
| 327 | LOGP(DLINP, LOGL_ERROR, |
Debian Mobcom Maintainers | 418775c | 2018-08-09 21:32:08 +0200 | [diff] [blame] | 328 | "failed to process accept()ed new link, " |
Pablo Neira Ayuso | cdda0a8 | 2013-07-08 01:13:19 +0200 | [diff] [blame] | 329 | "reason=`%s'\n", strerror(-ret)); |
| 330 | close(fd); |
| 331 | return ret; |
| 332 | } |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 333 | |
| 334 | return 0; |
| 335 | } |
| 336 | |
| 337 | struct ipa_server_link * |
| 338 | ipa_server_link_create(void *ctx, struct e1inp_line *line, |
| 339 | const char *addr, uint16_t port, |
Pablo Neira Ayuso | e009f4a | 2011-06-23 13:36:34 +0200 | [diff] [blame] | 340 | int (*accept_cb)(struct ipa_server_link *link, int fd), |
| 341 | void *data) |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 342 | { |
| 343 | struct ipa_server_link *ipa_link; |
| 344 | |
Pablo Neira Ayuso | cdda0a8 | 2013-07-08 01:13:19 +0200 | [diff] [blame] | 345 | OSMO_ASSERT(accept_cb != NULL); |
| 346 | |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 347 | ipa_link = talloc_zero(ctx, struct ipa_server_link); |
| 348 | if (!ipa_link) |
| 349 | return NULL; |
| 350 | |
Harald Welte | 6e831b7 | 2020-10-18 22:59:58 +0200 | [diff] [blame] | 351 | osmo_fd_setup(&ipa_link->ofd, -1, OSMO_FD_READ|OSMO_FD_WRITE, ipa_server_fd_cb, ipa_link, 0); |
Max | 480073a | 2019-01-20 12:43:45 +0100 | [diff] [blame] | 352 | if (addr) |
| 353 | ipa_link->addr = talloc_strdup(ipa_link, addr); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 354 | ipa_link->port = port; |
| 355 | ipa_link->accept_cb = accept_cb; |
| 356 | ipa_link->line = line; |
Pablo Neira Ayuso | e009f4a | 2011-06-23 13:36:34 +0200 | [diff] [blame] | 357 | ipa_link->data = data; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 358 | |
| 359 | return ipa_link; |
| 360 | |
| 361 | } |
| 362 | |
| 363 | void ipa_server_link_destroy(struct ipa_server_link *link) |
| 364 | { |
| 365 | talloc_free(link); |
| 366 | } |
| 367 | |
| 368 | int ipa_server_link_open(struct ipa_server_link *link) |
| 369 | { |
| 370 | int ret; |
| 371 | |
| 372 | ret = osmo_sock_init(AF_INET, SOCK_STREAM, IPPROTO_TCP, |
Harald Welte | 6bcc32b | 2021-04-28 14:40:59 +0200 | [diff] [blame] | 373 | link->addr, link->port, OSMO_SOCK_F_BIND| |
| 374 | OSMO_SOCK_F_DSCP(link->dscp) | OSMO_SOCK_F_PRIO(link->priority)); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 375 | if (ret < 0) |
| 376 | return ret; |
| 377 | |
| 378 | link->ofd.fd = ret; |
| 379 | if (osmo_fd_register(&link->ofd) < 0) { |
| 380 | close(ret); |
Alexander Couzens | e11afda | 2019-08-28 02:35:10 +0200 | [diff] [blame] | 381 | link->ofd.fd = -1; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 382 | return -EIO; |
| 383 | } |
| 384 | return 0; |
| 385 | } |
| 386 | |
| 387 | void ipa_server_link_close(struct ipa_server_link *link) |
| 388 | { |
Alexander Couzens | e11afda | 2019-08-28 02:35:10 +0200 | [diff] [blame] | 389 | if (link->ofd.fd == -1) |
| 390 | return; |
| 391 | |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 392 | osmo_fd_unregister(&link->ofd); |
| 393 | close(link->ofd.fd); |
Alexander Couzens | e11afda | 2019-08-28 02:35:10 +0200 | [diff] [blame] | 394 | link->ofd.fd = -1; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 395 | } |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 396 | |
Pau Espin Pedrol | 082876b | 2018-08-28 17:53:38 +0200 | [diff] [blame] | 397 | static int ipa_server_conn_read(struct ipa_server_conn *conn) |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 398 | { |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 399 | struct osmo_fd *ofd = &conn->ofd; |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 400 | struct msgb *msg; |
| 401 | int ret; |
| 402 | |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 403 | LOGIPA(conn, LOGL_DEBUG, "message received\n"); |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 404 | |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 405 | ret = ipa_msg_recv_buffered(ofd->fd, &msg, &conn->pending_msg); |
Pau Espin Pedrol | 3750dea | 2018-08-28 17:49:29 +0200 | [diff] [blame] | 406 | if (ret <= 0) { |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 407 | if (ret == -EAGAIN) |
Pau Espin Pedrol | 082876b | 2018-08-28 17:53:38 +0200 | [diff] [blame] | 408 | return 0; |
Pau Espin Pedrol | 3750dea | 2018-08-28 17:49:29 +0200 | [diff] [blame] | 409 | else if (ret == -EPIPE || ret == -ECONNRESET) |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 410 | LOGIPA(conn, LOGL_ERROR, "lost connection with server\n"); |
Pau Espin Pedrol | 3750dea | 2018-08-28 17:49:29 +0200 | [diff] [blame] | 411 | else if (ret == 0) |
| 412 | LOGIPA(conn, LOGL_ERROR, "connection closed with server\n"); |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 413 | ipa_server_conn_destroy(conn); |
Pau Espin Pedrol | 082876b | 2018-08-28 17:53:38 +0200 | [diff] [blame] | 414 | return -EBADF; |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 415 | } |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 416 | if (conn->cb) |
Pau Espin Pedrol | 082876b | 2018-08-28 17:53:38 +0200 | [diff] [blame] | 417 | return conn->cb(conn, msg); |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 418 | |
Pau Espin Pedrol | 082876b | 2018-08-28 17:53:38 +0200 | [diff] [blame] | 419 | return 0; |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 420 | } |
| 421 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 422 | static void ipa_server_conn_write(struct ipa_server_conn *conn) |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 423 | { |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 424 | struct msgb *msg; |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 425 | int ret; |
| 426 | |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 427 | LOGIPA(conn, LOGL_DEBUG, "sending data\n"); |
Neels Hofmeyr | 01543a1 | 2017-09-14 04:32:19 +0200 | [diff] [blame] | 428 | msg = msgb_dequeue(&conn->tx_queue); |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 429 | |
Neels Hofmeyr | 01543a1 | 2017-09-14 04:32:19 +0200 | [diff] [blame] | 430 | if (!msg) { |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 431 | osmo_fd_write_disable(&conn->ofd); |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 432 | return; |
| 433 | } |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 434 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 435 | ret = send(conn->ofd.fd, msg->data, msg->len, 0); |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 436 | if (ret < 0) { |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 437 | LOGIPA(conn, LOGL_ERROR, "error to send\n"); |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 438 | } |
| 439 | msgb_free(msg); |
| 440 | } |
| 441 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 442 | static int ipa_server_conn_cb(struct osmo_fd *ofd, unsigned int what) |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 443 | { |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 444 | struct ipa_server_conn *conn = ofd->data; |
Pau Espin Pedrol | 082876b | 2018-08-28 17:53:38 +0200 | [diff] [blame] | 445 | int rc = 0; |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 446 | |
Pablo Neira Ayuso | 218bb8f | 2011-09-09 01:04:46 +0200 | [diff] [blame] | 447 | LOGP(DLINP, LOGL_DEBUG, "connected read/write\n"); |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 448 | if (what & OSMO_FD_READ) |
Pau Espin Pedrol | 082876b | 2018-08-28 17:53:38 +0200 | [diff] [blame] | 449 | rc = ipa_server_conn_read(conn); |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 450 | if (rc != -EBADF && (what & OSMO_FD_WRITE)) |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 451 | ipa_server_conn_write(conn); |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 452 | |
| 453 | return 0; |
| 454 | } |
| 455 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 456 | struct ipa_server_conn * |
| 457 | ipa_server_conn_create(void *ctx, struct ipa_server_link *link, int fd, |
| 458 | int (*cb)(struct ipa_server_conn *conn, struct msgb *msg), |
Daniel Willmann | a0d9331 | 2011-09-15 12:56:58 +0200 | [diff] [blame] | 459 | int (*closed_cb)(struct ipa_server_conn *conn), void *data) |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 460 | { |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 461 | struct ipa_server_conn *conn; |
Harald Welte | b2d727a | 2016-04-28 07:53:49 +0200 | [diff] [blame] | 462 | struct sockaddr_in sa; |
| 463 | socklen_t sa_len = sizeof(sa); |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 464 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 465 | conn = talloc_zero(ctx, struct ipa_server_conn); |
| 466 | if (conn == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 467 | LOGP(DLINP, LOGL_ERROR, "cannot allocate new peer in server, " |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 468 | "reason=`%s'\n", strerror(errno)); |
| 469 | return NULL; |
| 470 | } |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 471 | conn->server = link; |
Harald Welte | 6e831b7 | 2020-10-18 22:59:58 +0200 | [diff] [blame] | 472 | osmo_fd_setup(&conn->ofd, fd, OSMO_FD_READ, ipa_server_conn_cb, conn, 0); |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 473 | conn->cb = cb; |
Daniel Willmann | a0d9331 | 2011-09-15 12:56:58 +0200 | [diff] [blame] | 474 | conn->closed_cb = closed_cb; |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 475 | conn->data = data; |
| 476 | INIT_LLIST_HEAD(&conn->tx_queue); |
Pablo Neira Ayuso | af3fed9 | 2011-06-23 20:42:19 +0200 | [diff] [blame] | 477 | |
Harald Welte | b2d727a | 2016-04-28 07:53:49 +0200 | [diff] [blame] | 478 | if (!getpeername(fd, (struct sockaddr *)&sa, &sa_len)) { |
| 479 | char *str = inet_ntoa(sa.sin_addr); |
| 480 | conn->addr = talloc_strdup(conn, str); |
| 481 | conn->port = ntohs(sa.sin_port); |
| 482 | } |
| 483 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 484 | if (osmo_fd_register(&conn->ofd) < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 485 | LOGP(DLINP, LOGL_ERROR, "could not register FD\n"); |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 486 | talloc_free(conn); |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 487 | return NULL; |
| 488 | } |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 489 | return conn; |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 490 | } |
| 491 | |
Harald Welte | 12814b9 | 2016-04-28 07:54:31 +0200 | [diff] [blame] | 492 | int ipa_server_conn_ccm(struct ipa_server_conn *conn, struct msgb *msg) |
| 493 | { |
| 494 | struct tlv_parsed tlvp; |
| 495 | uint8_t msg_type = *(msg->l2h); |
| 496 | struct ipaccess_unit unit_data = {}; |
| 497 | char *unitid; |
| 498 | int len, rc; |
| 499 | |
| 500 | /* shared CCM handling on both server and client */ |
| 501 | rc = ipa_ccm_rcvmsg_base(msg, &conn->ofd); |
| 502 | switch (rc) { |
| 503 | case -1: |
| 504 | /* error in IPA CCM processing */ |
| 505 | goto err; |
| 506 | case 1: |
| 507 | /* IPA CCM message that was handled in _base */ |
| 508 | return 0; |
| 509 | case 0: |
| 510 | /* IPA CCM message that we need to handle */ |
| 511 | break; |
| 512 | default: |
| 513 | /* Error */ |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 514 | LOGIPA(conn, LOGL_ERROR, "Unexpected return from " |
Harald Welte | 12814b9 | 2016-04-28 07:54:31 +0200 | [diff] [blame] | 515 | "ipa_ccm_rcvmsg_base: %d\n", rc); |
| 516 | goto err; |
| 517 | } |
| 518 | |
| 519 | switch (msg_type) { |
| 520 | case IPAC_MSGT_ID_RESP: |
Harald Welte | 82eb55e | 2018-08-01 13:22:55 +0200 | [diff] [blame] | 521 | rc = ipa_ccm_id_resp_parse(&tlvp, (const uint8_t *)msg->l2h+1, msgb_l2len(msg)-1); |
Harald Welte | 12814b9 | 2016-04-28 07:54:31 +0200 | [diff] [blame] | 522 | if (rc < 0) { |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 523 | LOGIPA(conn, LOGL_ERROR, "IPA CCM RESPonse with " |
Harald Welte | 12814b9 | 2016-04-28 07:54:31 +0200 | [diff] [blame] | 524 | "malformed TLVs\n"); |
| 525 | goto err; |
| 526 | } |
| 527 | if (!TLVP_PRESENT(&tlvp, IPAC_IDTAG_UNIT)) { |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 528 | LOGIPA(conn, LOGL_ERROR, "IPA CCM RESP without " |
Harald Welte | 12814b9 | 2016-04-28 07:54:31 +0200 | [diff] [blame] | 529 | "unit ID\n"); |
| 530 | goto err; |
| 531 | } |
| 532 | len = TLVP_LEN(&tlvp, IPAC_IDTAG_UNIT); |
| 533 | if (len < 1) { |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 534 | LOGIPA(conn, LOGL_ERROR, "IPA CCM RESP with short" |
Harald Welte | 12814b9 | 2016-04-28 07:54:31 +0200 | [diff] [blame] | 535 | "unit ID\n"); |
| 536 | goto err; |
| 537 | } |
| 538 | unitid = (char *) TLVP_VAL(&tlvp, IPAC_IDTAG_UNIT); |
| 539 | unitid[len-1] = '\0'; |
| 540 | ipa_parse_unitid(unitid, &unit_data); |
| 541 | |
| 542 | /* FIXME */ |
| 543 | rc = conn->ccm_cb(conn, msg, &tlvp, &unit_data); |
| 544 | if (rc < 0) |
| 545 | goto err; |
| 546 | break; |
| 547 | default: |
Max | f446367 | 2018-02-13 15:17:27 +0100 | [diff] [blame] | 548 | LOGIPA(conn, LOGL_ERROR, "Unknown IPA message type\n"); |
Harald Welte | 12814b9 | 2016-04-28 07:54:31 +0200 | [diff] [blame] | 549 | break; |
| 550 | } |
| 551 | return 0; |
| 552 | err: |
| 553 | /* in case of any error, we close the connection */ |
| 554 | ipa_server_conn_destroy(conn); |
| 555 | return -1; |
| 556 | } |
| 557 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 558 | void ipa_server_conn_destroy(struct ipa_server_conn *conn) |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 559 | { |
Harald Welte | c0a0ec4 | 2019-03-04 22:32:52 +0100 | [diff] [blame] | 560 | /* make the function re-entrant in case closed_cb() below somehow |
| 561 | * calls again into this destructor */ |
| 562 | if (conn->ofd.fd == -1) |
| 563 | return; |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 564 | close(conn->ofd.fd); |
Harald Welte | c0a0ec4 | 2019-03-04 22:32:52 +0100 | [diff] [blame] | 565 | conn->ofd.fd = -1; |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 566 | msgb_free(conn->pending_msg); |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 567 | osmo_fd_unregister(&conn->ofd); |
Daniel Willmann | a0d9331 | 2011-09-15 12:56:58 +0200 | [diff] [blame] | 568 | if (conn->closed_cb) |
| 569 | conn->closed_cb(conn); |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 570 | talloc_free(conn); |
Pablo Neira Ayuso | 6af9b61 | 2011-06-23 14:07:47 +0200 | [diff] [blame] | 571 | } |
Pablo Neira Ayuso | af3fed9 | 2011-06-23 20:42:19 +0200 | [diff] [blame] | 572 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 573 | void ipa_server_conn_send(struct ipa_server_conn *conn, struct msgb *msg) |
Pablo Neira Ayuso | af3fed9 | 2011-06-23 20:42:19 +0200 | [diff] [blame] | 574 | { |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 575 | msgb_enqueue(&conn->tx_queue, msg); |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 576 | osmo_fd_write_enable(&conn->ofd); |
Pablo Neira Ayuso | af3fed9 | 2011-06-23 20:42:19 +0200 | [diff] [blame] | 577 | } |