diff options
author | Holger Hans Peter Freyther <zecke@selfish.org> | 2010-02-20 21:21:02 +0100 |
---|---|---|
committer | Holger Hans Peter Freyther <zecke@selfish.org> | 2010-02-22 12:09:24 +0100 |
commit | 7bdc637aaeb3159bcb68b9ece31356176c0a0880 (patch) | |
tree | c78b932f86f8688e0edc23adfb5a8d3b5c67e7c7 /openbsc/src/mgcp/mgcp_protocol.c | |
parent | 92026f1cef5d8c187302e1ad2103a4826584ec1d (diff) |
[mgcp] Move away from global variables and split out VTY code
In separation of using the MGCP parsing in another context, refactor
the code to operate on a struct mgcp_config, split out the vty code
from the mgcp_protocol.c, and move the callbacks into the mgcp code.
There should be no functional changes.
Diffstat (limited to 'openbsc/src/mgcp/mgcp_protocol.c')
-rw-r--r-- | openbsc/src/mgcp/mgcp_protocol.c | 473 |
1 files changed, 89 insertions, 384 deletions
diff --git a/openbsc/src/mgcp/mgcp_protocol.c b/openbsc/src/mgcp/mgcp_protocol.c index 53573f3b2..8adc4c7b4 100644 --- a/openbsc/src/mgcp/mgcp_protocol.c +++ b/openbsc/src/mgcp/mgcp_protocol.c @@ -2,8 +2,8 @@ /* The protocol implementation */ /* - * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org> - * (C) 2009 by On-Waves + * (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org> + * (C) 2009-2010 by On-Waves * All Rights Reserved * * This program is free software; you can redistribute it and/or modify @@ -39,27 +39,10 @@ #include <openbsc/gsm_data.h> #include <openbsc/select.h> #include <openbsc/mgcp.h> -#include <openbsc/telnet_interface.h> - -#include <vty/command.h> -#include <vty/vty.h> +#include <openbsc/mgcp_internal.h> #warning "Make use of the rtp proxy code" -static int source_port = 2427; -static const char *local_ip = NULL; -static const char *source_addr = "0.0.0.0"; -static unsigned int number_endpoints = 0; -static const char *bts_ip = NULL; -static struct in_addr bts_in; -static const char *audio_name = "GSM-EFR/8000"; -static int audio_payload = 97; -static int audio_loop = 0; -static int early_bind = 0; - -static char *forward_ip = NULL; -static int forward_port = 0; - enum mgcp_connection_mode { MGCP_CONN_NONE = 0, MGCP_CONN_RECV_ONLY = 1, @@ -77,37 +60,6 @@ enum { PROTO_RTCP, }; -#define CI_UNUSED 0 -static unsigned int last_call_id = 0; - -struct mgcp_endpoint { - int ci; - char *callid; - char *local_options; - int conn_mode; - - /* the local rtp port we are binding to */ - int rtp_port; - - /* - * RTP mangling: - * - we get RTP and RTCP to us and need to forward to the BTS - * - we get RTP and RTCP from the BTS and forward to the network - */ - struct bsc_fd local_rtp; - struct bsc_fd local_rtcp; - - struct in_addr remote; - struct in_addr bts; - - /* in network byte order */ - int net_rtp, net_rtcp; - int bts_rtp, bts_rtcp; -}; - -static struct mgcp_endpoint *endpoints = NULL; -#define ENDPOINT_NUMBER(endp) abs(endp - endpoints) - /** * Macro for tokenizing MGCP messages and SDP in one go. * @@ -150,39 +102,36 @@ struct mgcp_msg_ptr { struct mgcp_request { char *name; - struct msgb *(*handle_request) (struct msgb *msg); + struct msgb *(*handle_request) (struct mgcp_config *cfg, struct msgb *msg); char *debug_name; }; #define MGCP_REQUEST(NAME, REQ, DEBUG_NAME) \ { .name = NAME, .handle_request = REQ, .debug_name = DEBUG_NAME }, -static struct msgb *handle_audit_endpoint(struct msgb *msg); -static struct msgb *handle_create_con(struct msgb *msg); -static struct msgb *handle_delete_con(struct msgb *msg); -static struct msgb *handle_modify_con(struct msgb *msg); - -static mgcp_change change_cb; -static void *change_cb_data; +static struct msgb *handle_audit_endpoint(struct mgcp_config *cfg, struct msgb *msg); +static struct msgb *handle_create_con(struct mgcp_config *cfg, struct msgb *msg); +static struct msgb *handle_delete_con(struct mgcp_config *cfg, struct msgb *msg); +static struct msgb *handle_modify_con(struct mgcp_config *cfg, struct msgb *msg); -static int generate_call_id() +static int generate_call_id(struct mgcp_config *cfg) { int i; /* use the call id */ - ++last_call_id; + ++cfg->last_call_id; /* handle wrap around */ - if (last_call_id == CI_UNUSED) - ++last_call_id; + if (cfg->last_call_id == CI_UNUSED) + ++cfg->last_call_id; /* callstack can only be of size number_of_endpoints */ /* verify that the call id is free, e.g. in case of overrun */ - for (i = 1; i < number_endpoints; ++i) - if (endpoints[i].ci == last_call_id) - return generate_call_id(); + for (i = 1; i < cfg->number_endpoints; ++i) + if (cfg->endpoints[i].ci == cfg->last_call_id) + return generate_call_id(cfg); - return last_call_id; + return cfg->last_call_id; } /* FIXIME/TODO: need to have a list of pending transactions and check that */ @@ -217,9 +166,11 @@ static int rtp_data_cb(struct bsc_fd *fd, unsigned int what) struct sockaddr_in addr; socklen_t slen = sizeof(addr); struct mgcp_endpoint *endp; + struct mgcp_config *cfg; int rc, dest, proto; endp = (struct mgcp_endpoint *) fd->data; + cfg = endp->cfg; rc = recvfrom(fd->fd, &buf, sizeof(buf), 0, (struct sockaddr *) &addr, &slen); @@ -249,9 +200,9 @@ static int rtp_data_cb(struct bsc_fd *fd, unsigned int what) proto = fd == &endp->local_rtp ? PROTO_RTP : PROTO_RTCP; /* We have no idea who called us, maybe it is the BTS. */ - if (dest == DEST_NETWORK && (endp->bts_rtp == 0 || forward_ip)) { + if (dest == DEST_NETWORK && (endp->bts_rtp == 0 || cfg->forward_ip)) { /* it was the BTS... */ - if (!bts_ip || memcmp(&addr.sin_addr, &bts_in, sizeof(bts_in)) == 0) { + if (!cfg->bts_ip || memcmp(&addr.sin_addr, &cfg->bts_in, sizeof(cfg->bts_in)) == 0) { if (fd == &endp->local_rtp) { endp->bts_rtp = addr.sin_port; } else { @@ -265,7 +216,7 @@ static int rtp_data_cb(struct bsc_fd *fd, unsigned int what) } /* dispatch */ - if (audio_loop) + if (cfg->audio_loop) dest = !dest; if (dest == DEST_NETWORK) { @@ -279,7 +230,7 @@ static int rtp_data_cb(struct bsc_fd *fd, unsigned int what) } } -static int create_bind(struct bsc_fd *fd, int port) +static int create_bind(const char *source_addr, struct bsc_fd *fd, int port) { struct sockaddr_in addr; int on = 1; @@ -305,15 +256,17 @@ static int create_bind(struct bsc_fd *fd, int port) static int bind_rtp(struct mgcp_endpoint *endp) { - if (create_bind(&endp->local_rtp, endp->rtp_port) != 0) { + struct mgcp_config *cfg = endp->cfg; + + if (create_bind(cfg->source_addr, &endp->local_rtp, endp->rtp_port) != 0) { LOGP(DMGCP, LOGL_ERROR, "Failed to create RTP port: %s:%d on 0x%x\n", - source_addr, endp->rtp_port, ENDPOINT_NUMBER(endp)); + cfg->source_addr, endp->rtp_port, ENDPOINT_NUMBER(endp)); goto cleanup0; } - if (create_bind(&endp->local_rtcp, endp->rtp_port + 1) != 0) { + if (create_bind(cfg->source_addr, &endp->local_rtcp, endp->rtp_port + 1) != 0) { LOGP(DMGCP, LOGL_ERROR, "Failed to create RTCP port: %s:%d on 0x%x\n", - source_addr, endp->rtp_port + 1, ENDPOINT_NUMBER(endp)); + cfg->source_addr, endp->rtp_port + 1, ENDPOINT_NUMBER(endp)); goto cleanup1; } @@ -397,13 +350,14 @@ static struct msgb *send_response(int code, const char *msg, const char *trans) return send_response_with_data(code, msg, trans, NULL); } -static struct msgb *send_with_sdp(struct mgcp_endpoint *endp, const char *msg, const char *trans_id) +static struct msgb *send_with_sdp(struct mgcp_endpoint *endp, + const char *msg, const char *trans_id) { - const char *addr = local_ip; + const char *addr = endp->cfg->local_ip; char sdp_record[4096]; if (!addr) - addr = source_addr; + addr = endp->cfg->source_addr; snprintf(sdp_record, sizeof(sdp_record) - 1, "I: %d\n\n" @@ -412,7 +366,8 @@ static struct msgb *send_with_sdp(struct mgcp_endpoint *endp, const char *msg, c "m=audio %d RTP/AVP %d\r\n" "a=rtpmap:%d %s\r\n", endp->ci, addr, endp->rtp_port, - audio_payload, audio_payload, audio_name); + endp->cfg->audio_payload, endp->cfg->audio_payload, + endp->cfg->audio_name); return send_response_with_data(200, msg, trans_id, sdp_record); } @@ -438,7 +393,7 @@ struct msgb *mgcp_create_rsip(void) * - this can be a command (four letters, space, transaction id) * - or a response (three numbers, space, transaction id) */ -struct msgb *mgcp_handle_message(struct msgb *msg) +struct msgb *mgcp_handle_message(struct mgcp_config *cfg, struct msgb *msg) { int code; struct msgb *resp = NULL; @@ -457,7 +412,7 @@ struct msgb *mgcp_handle_message(struct msgb *msg) for (i = 0; i < ARRAY_SIZE(mgcp_requests); ++i) if (strncmp(mgcp_requests[i].name, (const char *) &msg->data[0], 4) == 0) { handled = 1; - resp = mgcp_requests[i].handle_request(msg); + resp = mgcp_requests[i].handle_request(cfg, msg); break; } if (!handled) { @@ -504,21 +459,22 @@ static int find_msg_pointers(struct msgb *msg, struct mgcp_msg_ptr *ptrs, int pt return found; } -static struct mgcp_endpoint *find_endpoint(const char *mgcp) +static struct mgcp_endpoint *find_endpoint(struct mgcp_config *cfg, const char *mgcp) { char *endptr = NULL; unsigned int gw = INT_MAX; gw = strtoul(mgcp, &endptr, 16); - if (gw == 0 || gw >= number_endpoints || strcmp(endptr, "@mgw") != 0) { + if (gw == 0 || gw >= cfg->number_endpoints || strcmp(endptr, "@mgw") != 0) { LOGP(DMGCP, LOGL_ERROR, "Not able to find endpoint: '%s'\n", mgcp); return NULL; } - return &endpoints[gw]; + return &cfg->endpoints[gw]; } -static int analyze_header(struct msgb *msg, struct mgcp_msg_ptr *ptr, int size, +static int analyze_header(struct mgcp_config *cfg, struct msgb *msg, + struct mgcp_msg_ptr *ptr, int size, const char **transaction_id, struct mgcp_endpoint **endp) { int found; @@ -553,7 +509,7 @@ static int analyze_header(struct msgb *msg, struct mgcp_msg_ptr *ptr, int size, } *transaction_id = (const char *)&msg->l3h[ptr[0].start]; - *endp = find_endpoint((const char *)&msg->l3h[ptr[1].start]); + *endp = find_endpoint(cfg, (const char *)&msg->l3h[ptr[1].start]); return *endp == NULL; } @@ -581,14 +537,14 @@ static int verify_ci(const struct mgcp_endpoint *endp, return 0; } -static struct msgb *handle_audit_endpoint(struct msgb *msg) +static struct msgb *handle_audit_endpoint(struct mgcp_config *cfg, struct msgb *msg) { struct mgcp_msg_ptr data_ptrs[6]; int found, response; const char *trans_id; struct mgcp_endpoint *endp; - found = analyze_header(msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp); + found = analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp); if (found != 0) response = 500; else @@ -612,7 +568,7 @@ static int parse_conn_mode(const char* msg, int *conn_mode) return ret; } -static struct msgb *handle_create_con(struct msgb *msg) +static struct msgb *handle_create_con(struct mgcp_config *cfg, struct msgb *msg) { struct mgcp_msg_ptr data_ptrs[6]; int found, i, line_start; @@ -620,7 +576,7 @@ static struct msgb *handle_create_con(struct msgb *msg) struct mgcp_endpoint *endp; int error_code = 500; - found = analyze_header(msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp); + found = analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp); if (found != 0) return send_response(500, "CRCX", trans_id); @@ -633,11 +589,11 @@ static struct msgb *handle_create_con(struct msgb *msg) MSG_TOKENIZE_START switch (msg->l3h[line_start]) { case 'L': - endp->local_options = talloc_strdup(endpoints, + endp->local_options = talloc_strdup(cfg->endpoints, (const char *)&msg->l3h[line_start + 3]); break; case 'C': - endp->callid = talloc_strdup(endpoints, + endp->callid = talloc_strdup(cfg->endpoints, (const char *)&msg->l3h[line_start + 3]); break; case 'M': @@ -662,19 +618,19 @@ static struct msgb *handle_create_con(struct msgb *msg) memset(&endp->remote, 0, sizeof(endp->remote)); /* bind to the port now */ - endp->rtp_port = rtp_calculate_port(ENDPOINT_NUMBER(endp), rtp_base_port); - if (!early_bind && bind_rtp(endp) != 0) + endp->rtp_port = rtp_calculate_port(ENDPOINT_NUMBER(endp), cfg->rtp_base_port); + if (!cfg->early_bind && bind_rtp(endp) != 0) goto error2; /* assign a local call identifier or fail */ - endp->ci = generate_call_id(); + endp->ci = generate_call_id(cfg); if (endp->ci == CI_UNUSED) goto error2; LOGP(DMGCP, LOGL_NOTICE, "Creating endpoint on: 0x%x CI: %u port: %u\n", ENDPOINT_NUMBER(endp), endp->ci, endp->rtp_port); - if (change_cb) - change_cb(ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX, endp->rtp_port, change_cb_data); + if (cfg->change_cb) + cfg->change_cb(cfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX, endp->rtp_port); return send_with_sdp(endp, "CRCX", trans_id); error: @@ -688,7 +644,7 @@ error2: return send_response(error_code, "CRCX", trans_id); } -static struct msgb *handle_modify_con(struct msgb *msg) +static struct msgb *handle_modify_con(struct mgcp_config *cfg, struct msgb *msg) { struct mgcp_msg_ptr data_ptrs[6]; int found, i, line_start; @@ -696,7 +652,7 @@ static struct msgb *handle_modify_con(struct msgb *msg) struct mgcp_endpoint *endp; int error_code = 500; - found = analyze_header(msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp); + found = analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp); if (found != 0) return send_response(error_code, "MDCX", trans_id); @@ -767,8 +723,8 @@ static struct msgb *handle_modify_con(struct msgb *msg) /* modify */ LOGP(DMGCP, LOGL_NOTICE, "Modified endpoint on: 0x%x Server: %s:%u\n", ENDPOINT_NUMBER(endp), inet_ntoa(endp->remote), endp->net_rtp); - if (change_cb) - change_cb(ENDPOINT_NUMBER(endp), MGCP_ENDP_MDCX, endp->rtp_port, change_cb_data); + if (cfg->change_cb) + cfg->change_cb(cfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_MDCX, endp->rtp_port); return send_with_sdp(endp, "MDCX", trans_id); error: @@ -781,7 +737,7 @@ error3: return send_response(error_code, "MDCX", trans_id); } -static struct msgb *handle_delete_con(struct msgb *msg) +static struct msgb *handle_delete_con(struct mgcp_config *cfg, struct msgb *msg) { struct mgcp_msg_ptr data_ptrs[6]; int found, i, line_start; @@ -789,7 +745,7 @@ static struct msgb *handle_delete_con(struct msgb *msg) struct mgcp_endpoint *endp; int error_code = 500; - found = analyze_header(msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp); + found = analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp); if (found != 0) return send_response(error_code, "DLCX", trans_id); @@ -825,14 +781,14 @@ static struct msgb *handle_delete_con(struct msgb *msg) talloc_free(endp->callid); talloc_free(endp->local_options); - if (!early_bind) { + if (!cfg->early_bind) { bsc_unregister_fd(&endp->local_rtp); bsc_unregister_fd(&endp->local_rtcp); } endp->net_rtp = endp->net_rtcp = endp->bts_rtp = endp->bts_rtcp = 0; - if (change_cb) - change_cb(ENDPOINT_NUMBER(endp), MGCP_ENDP_DLCX, endp->rtp_port, change_cb_data); + if (cfg->change_cb) + cfg->change_cb(cfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_DLCX, endp->rtp_port); return send_response(250, "DLCX", trans_id); @@ -846,299 +802,48 @@ error3: return send_response(error_code, "DLCX", trans_id); } -/* - * vty code for mgcp below - */ -struct cmd_node mgcp_node = { - MGCP_NODE, - "%s(mgcp)#", - 1, -}; - -static int config_write_mgcp(struct vty *vty) -{ - vty_out(vty, "mgcp%s", VTY_NEWLINE); - if (local_ip) - vty_out(vty, " local ip %s%s", local_ip, VTY_NEWLINE); - if (bts_ip) - vty_out(vty, " bts ip %s%s", bts_ip, VTY_NEWLINE); - vty_out(vty, " bind ip %s%s", source_addr, VTY_NEWLINE); - vty_out(vty, " bind port %u%s", source_port, VTY_NEWLINE); - vty_out(vty, " bind early %u%s", !!early_bind, VTY_NEWLINE); - vty_out(vty, " rtp base %u%s", rtp_base_port, VTY_NEWLINE); - vty_out(vty, " sdp audio payload number %u%s", audio_payload, VTY_NEWLINE); - vty_out(vty, " sdp audio payload name %s%s", audio_name, VTY_NEWLINE); - vty_out(vty, " loop %u%s", !!audio_loop, VTY_NEWLINE); - vty_out(vty, " endpoints %u%s", number_endpoints, VTY_NEWLINE); - if (forward_ip) - vty_out(vty, " forward audio ip %s%s", forward_ip, VTY_NEWLINE); - if (forward_port != 0) - vty_out(vty, " forward audio port %d%s", forward_port, VTY_NEWLINE); - - return CMD_SUCCESS; -} - -DEFUN(show_mcgp, show_mgcp_cmd, "show mgcp", - SHOW_STR "Display information about the MGCP Media Gateway") -{ - int i; - - vty_out(vty, "MGCP is up and running with %u endpoints:%s", number_endpoints - 1, VTY_NEWLINE); - for (i = 1; i < number_endpoints; ++i) { - struct mgcp_endpoint *endp = &endpoints[i]; - vty_out(vty, " Endpoint 0x%.2x: CI: %d net: %u/%u bts: %u/%u%s", - i, endp->ci, - ntohs(endp->net_rtp), ntohs(endp->net_rtcp), - ntohs(endp->bts_rtp), ntohs(endp->bts_rtcp), VTY_NEWLINE); - } - - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp, - cfg_mgcp_cmd, - "mgcp", - "Configure the MGCP") -{ - vty->node = MGCP_NODE; - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp_local_ip, - cfg_mgcp_local_ip_cmd, - "local ip IP", - "Set the IP to be used in SDP records") -{ - local_ip = talloc_strdup(tall_bsc_ctx, argv[0]); - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp_bts_ip, - cfg_mgcp_bts_ip_cmd, - "bts ip IP", - "Set the IP of the BTS for RTP forwarding") -{ - bts_ip = talloc_strdup(tall_bsc_ctx, argv[0]); - inet_aton(bts_ip, &bts_in); - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp_bind_ip, - cfg_mgcp_bind_ip_cmd, - "bind ip IP", - "Bind the MGCP to this local addr") -{ - source_addr = talloc_strdup(tall_bsc_ctx, argv[0]); - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp_bind_port, - cfg_mgcp_bind_port_cmd, - "bind port <0-65534>", - "Bind the MGCP to this port") -{ - unsigned int port = atoi(argv[0]); - if (port > 65534) { - vty_out(vty, "%% wrong bind port '%s'%s", argv[0], VTY_NEWLINE); - return CMD_WARNING; - } - - source_port = port; - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp_bind_early, - cfg_mgcp_bind_early_cmd, - "bind early (0|1)", - "Bind all RTP ports early") -{ - unsigned int bind = atoi(argv[0]); - if (bind != 0 && bind != 1) { - vty_out(vty, "%% param must be 0 or 1.%s", VTY_NEWLINE); - return CMD_WARNING; - } - - early_bind = bind == 1; - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp_rtp_base_port, - cfg_mgcp_rtp_base_port_cmd, - "rtp base <0-65534>", - "Base port to use") +struct mgcp_config *mgcp_config_alloc(void) { - unsigned int port = atoi(argv[0]); - if (port > 65534) { - vty_out(vty, "%% wrong base port '%s'%s", argv[0], VTY_NEWLINE); - return CMD_WARNING; - } - - rtp_base_port = port; - return CMD_SUCCESS; -} + struct mgcp_config *cfg; -DEFUN(cfg_mgcp_sdp_payload_number, - cfg_mgcp_sdp_payload_number_cmd, - "sdp audio payload number <1-255>", - "Set the audio codec to use") -{ - unsigned int payload = atoi(argv[0]); - if (payload > 255) { - vty_out(vty, "%% wrong payload number '%s'%s", argv[0], VTY_NEWLINE); - return CMD_WARNING; + cfg = talloc_zero(NULL, struct mgcp_config); + if (!cfg) { + LOGP(DMGCP, LOGL_FATAL, "Failed to allocate config.\n"); + return NULL; } - audio_payload = payload; - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp_sdp_payload_name, - cfg_mgcp_sdp_payload_name_cmd, - "sdp audio payload name NAME", - "Set the audio name to use") -{ - audio_name = talloc_strdup(tall_bsc_ctx, argv[0]); - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp_loop, - cfg_mgcp_loop_cmd, - "loop (0|1)", - "Loop the audio") -{ - audio_loop = atoi(argv[0]); - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp_number_endp, - cfg_mgcp_number_endp_cmd, - "number endpoints <0-65534>", - "The number of endpoints to allocate. This is not dynamic.") -{ - /* + 1 as we start counting at one */ - number_endpoints = atoi(argv[0]) + 1; - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp_forward_ip, - cfg_mgcp_forward_ip_cmd, - "forward audio ip IP", - "Forward packets from and to the IP. This disables most of the MGCP feature.") -{ - if (forward_ip) - talloc_free(forward_ip); - forward_ip = talloc_strdup(tall_bsc_ctx, argv[0]); - return CMD_SUCCESS; -} - -DEFUN(cfg_mgcp_forward_port, - cfg_mgcp_forward_port_cmd, - "forward audio port <1-15000>", - "Forward packets from and to the port. This disables most of the MGCP feature.") -{ - forward_port = atoi(argv[0]); - return CMD_SUCCESS; -} + cfg->source_port = 2427; + cfg->source_addr = talloc_strdup(cfg, "0.0.0.0"); + cfg->audio_name = talloc_strdup(cfg, "GSM-EFR/8000"); + cfg->audio_payload = 97; + cfg->rtp_base_port = RTP_PORT_DEFAULT; -int mgcp_vty_init(void) -{ - install_element(VIEW_NODE, &show_mgcp_cmd); - - install_element(CONFIG_NODE, &cfg_mgcp_cmd); - install_node(&mgcp_node, config_write_mgcp); - install_default(MGCP_NODE); - install_element(MGCP_NODE, &cfg_mgcp_local_ip_cmd); - install_element(MGCP_NODE, &cfg_mgcp_bts_ip_cmd); - install_element(MGCP_NODE, &cfg_mgcp_bind_ip_cmd); - install_element(MGCP_NODE, &cfg_mgcp_bind_port_cmd); - install_element(MGCP_NODE, &cfg_mgcp_bind_early_cmd); - install_element(MGCP_NODE, &cfg_mgcp_rtp_base_port_cmd); - install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_number_cmd); - install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_name_cmd); - install_element(MGCP_NODE, &cfg_mgcp_loop_cmd); - install_element(MGCP_NODE, &cfg_mgcp_number_endp_cmd); - install_element(MGCP_NODE, &cfg_mgcp_forward_ip_cmd); - install_element(MGCP_NODE, &cfg_mgcp_forward_port_cmd); - return 0; + return cfg; } -int mgcp_parse_config(const char *config_file, struct gsm_network *dummy_network) +int mgcp_endpoints_allocate(struct mgcp_config *cfg) { - int i, rc; - - rc = vty_read_config_file(config_file); - if (rc < 0) { - fprintf(stderr, "Failed to parse the config file: '%s'\n", config_file); - return rc; - } - - - if (!bts_ip) - fprintf(stderr, "No BTS ip address specified. This will allow everyone to connect.\n"); + int i; - endpoints = _talloc_zero_array(tall_bsc_ctx, + /* Initialize all endpoints */ + cfg->endpoints = _talloc_zero_array(cfg, sizeof(struct mgcp_endpoint), - number_endpoints, "endpoints"); - if (!endpoints) { - fprintf(stderr, "Failed to allocate endpoints: %d. Quitting.\n", number_endpoints); + cfg->number_endpoints, "endpoints"); + if (!cfg->endpoints) return -1; - } - - /* Initialize all endpoints */ - for (i = 0; i < number_endpoints; ++i) { - endpoints[i].local_rtp.fd = -1; - endpoints[i].local_rtcp.fd = -1; - endpoints[i].ci = CI_UNUSED; - } - - /* - * This application supports two modes. - * 1.) a true MGCP gateway with support for AUEP, CRCX, MDCX, DLCX - * 2.) plain forwarding of RTP packets on the endpoints. - * both modes are mutual exclusive - */ - if (forward_ip) { - int port = rtp_base_port; - if (forward_port != 0) - port = forward_port; - - if (!early_bind) { - LOGP(DMGCP, LOGL_NOTICE, "Forwarding requires early bind.\n"); - return -1; - } - - /* - * Store the forward IP and assign a ci. For early bind - * the sockets will be created after this. - */ - for (i = 1; i < number_endpoints; ++i) { - struct mgcp_endpoint *endp = &endpoints[i]; - inet_aton(forward_ip, &endp->remote); - endp->ci = CI_UNUSED + 23; - endp->net_rtp = htons(rtp_calculate_port(ENDPOINT_NUMBER(endp), port)); - endp->net_rtcp = htons(rtp_calculate_port(ENDPOINT_NUMBER(endp), port) + 1); - } - - LOGP(DMGCP, LOGL_NOTICE, "Configured for Audio Forwarding.\n"); - } - /* early bind */ - if (early_bind) { - for (i = 1; i < number_endpoints; ++i) { - struct mgcp_endpoint *endp = &endpoints[i]; - endp->rtp_port = rtp_calculate_port(ENDPOINT_NUMBER(endp), rtp_base_port); - if (bind_rtp(endp) != 0) { - LOGP(DMGCP, LOGL_FATAL, "Failed to bind: %d\n", endp->rtp_port); - return -1; - } - } + for (i = 0; i < cfg->number_endpoints; ++i) { + cfg->endpoints[i].local_rtp.fd = -1; + cfg->endpoints[i].local_rtcp.fd = -1; + cfg->endpoints[i].ci = CI_UNUSED; + cfg->endpoints[i].cfg = cfg; } - return !!forward_ip; + return 0; } -void mgcp_set_change_cb(mgcp_change cb, void *data) +int mgcp_bind_rtp_port(struct mgcp_endpoint *endp, int rtp_port) { - change_cb = cb; - change_cb_data = data; + endp->rtp_port = rtp_port; + return bind_rtp(endp); } |