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osmo-bsc
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make telnet interface use VTY code

This commit is contained in:
Harald Welte 2009-03-10 12:21:45 +00:00
parent 68628e8479
commit 404cdd8951
4 changed files with 21 additions and 407 deletions
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4
include/openbsc/telnet_interface.h
View File

@ -25,6 +25,8 @@
#include "linuxlist.h"
#include "select.h"
#include <vty/vty.h>
#define TELNET_COMMAND_48 1
#define TELNET_COMMAND_11 2
@ -32,6 +34,8 @@ struct telnet_connection {
struct llist_head entry;
struct gsm_network *network;
struct bsc_fd fd;
struct vty *vty;
int bts;
int command;

6
src/Makefile.am
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@ -6,14 +6,14 @@ noinst_LIBRARIES = libbsc.a libvty.a
libbsc_a_SOURCES = abis_rsl.c abis_nm.c gsm_04_08.c gsm_data.c \
gsm_subscriber.c msgb.c select.c chan_alloc.c timer.c debug.c db.c \
gsm_04_11.c telnet_interface.c telnet_parser.l subchan_demux.c \
gsm_04_11.c telnet_interface.c subchan_demux.c \
trau_frame.c trau_mux.c paging.c e1_config.c e1_input.c tlv_parser.c \
input/misdn.c input/ipaccess.c signal.c gsm_utils.c
libvty_a_SOURCES = vty/buffer.c vty/command.c vty/vector.c vty/vty.c
bsc_hack_SOURCES = bsc_hack.c
bsc_hack_LDADD = libbsc.a -ldl -ldbi
bsc_hack_SOURCES = bsc_hack.c vty_interface.c
bsc_hack_LDADD = libbsc.a libvty.a -ldl -ldbi -lcrypt
bs11_config_SOURCES = bs11_config.c abis_nm.c gsm_data.c msgb.c debug.c select.c timer.c rs232.c tlv_parser.c

228
src/telnet_interface.c
View File

@ -35,8 +35,6 @@
#include <openbsc/paging.h>
#include <openbsc/signal.h>
extern void telnet_parse(struct telnet_connection *connection, char *line);
#define WRITE_CONNECTION(fd, msg...) \
int ret; \
char buf[4096]; \
@ -64,6 +62,8 @@ void telnet_init(struct gsm_network *network, int port) {
struct sockaddr_in sock_addr;
int fd, on = 1;
bsc_vty_init(network);
fd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (fd < 0) {
@ -93,26 +93,10 @@ void telnet_init(struct gsm_network *network, int port) {
bsc_register_fd(&server_socket);
/* register callbacks */
#if 0
register_signal_handler(SS_PAGING, telnet_paging_callback, network);
register_signal_handler(SS_SMS, telnet_sms_callback, network);
}
void telnet_write_help(int fd) {
int ret;
static char *msg =
"Help for the ad-hoc telnet command line interface\n"
"The generic pattern is CMD LEN DATA\\n or just CMD\n"
"where CMD is one of the following:\n"
"help\n"
"page IMSI (type)\n"
"call IMSI (number)\n"
"get_channel IMSI Add use count on an active channel\n"
"put_channel IMSI Remove use count on an active channel\n"
"show This will show the channel allocation\n"
"48 IMSI 0xAB 0xEF...Send GSM 04.08. proto and msg byte then data\n"
"11 IMSI 0xAB 0xEF...Send GSM 04.11\n";
ret = write(fd, msg, strlen(msg));
#endif
}
static void print_welcome(int fd) {
@ -142,200 +126,10 @@ int telnet_close_client(struct bsc_fd *fd) {
return 0;
}
void telnet_error_client(int fd) {
int ret;
static char *msg = "Something went wrong. Please try again.\n";
printf("Error\n");
ret = write(fd, msg, strlen(msg));
}
static struct gsm_lchan* find_channel(struct gsm_bts *bts, const char *imsi,
const char **error, int fd) {
int ret;
struct gsm_lchan *lchan;
struct gsm_subscriber *subscr;
subscr = subscr_get_by_imsi(imsi);
if (!subscr) {
ret = write(fd, error[0], strlen(error[0]));
return NULL;
}
lchan = lchan_find(bts, subscr);
if (!lchan)
ret = write(fd, error[1], strlen(error[1]));
subscr_put(subscr);
return lchan;
}
void telnet_page(struct telnet_connection *connection, const char *imsi, int type) {
int ret;
static const char* error[] = {
"paging: IMSI not found\n",
"paging: No channel allocated for IMSI -> will allocate\n" };
struct gsm_bts *bts = &connection->network->bts[connection->bts];
struct gsm_lchan *lchan = find_channel(bts, imsi, error, connection->fd.fd);
if (lchan) {
static const char *msg = "paging: A Channel is already allocated.\n";
ret = write(connection->fd.fd, msg, strlen(msg));
return;
}
struct gsm_subscriber *subscr = subscr_get_by_imsi(imsi);
if (!subscr)
return;
paging_request(bts, subscr, type, NULL, NULL);
}
void telnet_put_channel(struct telnet_connection *connection, const char *imsi) {
static const char* error[] = {
"put_channel: IMSI not found\n",
"put_channel: No channel allocated for IMSI\n" };
struct gsm_bts *bts = &connection->network->bts[connection->bts];
struct gsm_lchan *lchan = find_channel(bts, imsi, error, connection->fd.fd);
if (!lchan)
return;
put_lchan(lchan);
}
void telnet_get_channel(struct telnet_connection *connection, const char *imsi) {
static const char* error[] = {
"get_channel: IMSI not found\n",
"get_channel: No channel allocated for IMSI\n" };
struct gsm_bts *bts = &connection->network->bts[connection->bts];
struct gsm_lchan *lchan = find_channel(bts, imsi, error, connection->fd.fd);
if (!lchan)
return;
use_lchan(lchan);
}
void telnet_call(struct telnet_connection *connection, const char* imsi,
const char *origin) {
static const char* error[] = {
"call: IMSI not found\n",
"call: No channel allocated for IMSI\n" };
struct gsm_bts *bts = &connection->network->bts[connection->bts];
struct gsm_lchan *lchan = find_channel(bts, imsi, error, connection->fd.fd);
if (!lchan)
return;
/* TODO: add the origin */
gsm48_cc_tx_setup(lchan, NULL);
}
void telnet_send_gsm_48(struct telnet_connection *connection) {
static const char* error[] = {
"48: IMSI not found\n",
"48: No channel allocated for IMSI\n" };
int ret;
struct gsm_bts *bts = &connection->network->bts[connection->bts];
struct gsm_lchan *lchan = find_channel(bts, connection->imsi, error, connection->fd.fd);
if (!lchan)
return;
if (connection->read < 2) {
static const char *msg = "48: Need at least two bytes";
ret = write(connection->fd.fd, msg, strlen(msg));
return;
}
struct msgb *msg = gsm48_msgb_alloc();
struct gsm48_hdr *gh;
int i;
gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh) + connection->read-2);
msg->lchan = lchan;
gh->proto_discr = connection->commands[0];
gh->msg_type = connection->commands[1];
for (i = 2; i < connection->read; ++i)
gh->data[i-2] = connection->commands[i];
gsm48_sendmsg(msg);
}
void telnet_send_gsm_11(struct telnet_connection *connection) {
printf("sending gsm04.11 message\n");
}
static void show_bts(int fd, struct gsm_bts *bts) {
WRITE_CONNECTION(fd,
"BTS #%u on link %u LOC: %u TRX: %d CCCH0: arfcn:%u,#%u\n",
bts->nr, bts->bts_nr, bts->location_area_code,
bts->num_trx, bts->c0->arfcn, bts->c0->nr)
}
static void show_trx(int fd, struct gsm_bts_trx *trx) {
WRITE_CONNECTION(fd,
" TRX: %u ARFCN: %u\n",
trx->nr, trx->arfcn)
}
static void show_ts(int fd, struct gsm_bts_trx_ts *ts) {
WRITE_CONNECTION(fd,
" TS: #%u pchan: %12s flags: %u\n",
ts->nr, gsm_pchan_name(ts->pchan), ts->flags);
}
static void show_lchan(int fd, struct gsm_lchan *lchan) {
struct gsm_subscriber *subscr = lchan->subscr;
WRITE_CONNECTION(fd,
" LCHAN: #%u type: %7s count: %d subscriber: %s/%s/%s use: %d loc: %p\n",
lchan->nr, gsm_lchan_name(lchan->type),
lchan->use_count,
subscr ? subscr->imsi : "na",
subscr ? subscr->tmsi : "na",
subscr ? subscr->name : "na",
lchan->use_count, lchan->loc_operation);
}
void telnet_list_channels(struct telnet_connection *connection) {
int bts_no, trx, lchan_no, ts_no;
struct gsm_network *network = connection->network;
for (bts_no = 0; bts_no < network->num_bts; ++bts_no) {
struct gsm_bts *bts = &network->bts[bts_no];
show_bts(connection->fd.fd, bts);
for (trx = 0; trx < bts->num_trx; ++trx) {
show_trx(connection->fd.fd, &bts->trx[trx]);
for (ts_no = 0; ts_no < 8; ++ts_no) {
show_ts(connection->fd.fd, &bts->trx[trx].ts[ts_no]);
for (lchan_no = 0; lchan_no < TS_MAX_LCHAN; ++lchan_no) {
struct gsm_lchan *lchan =
&bts->trx[trx].ts[ts_no].lchan[lchan_no];
show_lchan(connection->fd.fd, lchan);
}
}
}
}
}
static int client_data(struct bsc_fd *fd, unsigned int what) {
char buf[4096];
int ret;
ret = read(fd->fd, buf, sizeof(buf)-1);
buf[ret] = '\0';
/* connection is gone */
if (ret <= 0)
return telnet_close_client(fd);
/* time to parse. This code assumes that the input is line based */
telnet_parse((struct telnet_connection*)fd->data, buf);
return 0;
static int client_data(struct bsc_fd *fd, unsigned int what)
{
struct telnet_connection *conn = fd->data;
return vty_read(conn->vty);
}
static int telnet_new_connection(struct bsc_fd *fd, unsigned int what) {
@ -363,9 +157,14 @@ static int telnet_new_connection(struct bsc_fd *fd, unsigned int what) {
print_welcome(new_connection);
connection->vty = vty_create(new_connection);
if (!connection->vty)
return -1;
return 0;
}
#if 0
static int telnet_paging_callback(unsigned int subsys, unsigned int singal,
void *handler_data, void *signal_data)
{
@ -399,3 +198,4 @@ static int telnet_sms_callback(unsigned int subsys, unsigned int signal,
return 0;
}
#endif

190
src/telnet_parser.l
View File

@ -1,190 +0,0 @@
/* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
/*
* I'm lazy and will not introduce lemon to this game. Our telnet
* interface is matching line based so we can have a pattern that
* is matching a line and everyone will be happy.
*/
%option never-interactive
%option noyywrap
%option reentrant
%{
#include <string.h>
#include <openbsc/telnet_interface.h>
extern char *strndup(const char *s, size_t n);
extern void telnet_write_help(int);
extern void telnet_close_client(struct bsc_fd*);
extern void telnet_error_client(int fd);
extern void telnet_page(struct telnet_connection *con, const char *imsi, int page);
extern void telnet_call(struct telnet_connection *con, const char *imsi,
const char* origin);
extern void telnet_put_channel(struct telnet_connection*, const char *imsi);
extern void telnet_get_channel(struct telnet_connection*, const char *imsi);
extern void telnet_send_gsm_48(struct telnet_connection*);
extern void telnet_send_gsm_11(struct telnet_connection*);
extern void telnet_list_channels(struct telnet_connection*);
static const int PAGE_LEN = 5; /* "page " */
static const int CALL_LEN = 5; /* "call " */
static const int PUT_LEN = 12; /* "put_channel " */
static const int GET_LEN = 12; /* "get_channel " */
static const int NET_LEN = 3; /* "48 " "11 " */
static const int SHOW_LEN = 5; /* "show " */
#define YY_EXTRA_TYPE struct telnet_connection*
/* the string is null terminated */
static int parse_hex(char *hex)
{
int byte;
sscanf(hex, "%x", &byte);
return byte;
}
#define PREPARE_STRING(len) \
yytext[yyleng-1] = '\0'; \
char *str = yytext + len; \
char *pag = strstr(str, "\r"); \
if (pag) pag[0] = '\0'; \
pag = strstr(str, "\n"); \
if (pag) pag[0] = '\0';
%}
CMD_HELP "help"
CMD_EXIT "exit"
CMD_CLOSE "close"
CMD_PAGE "page"
CMD_GET_CHANNEL "get_channel"
CMD_PUT_CHANNEL "put_channel"
CMD_CALL "call"
CMD_48 "48"
CMD_11 "11"
CMD_SHOW "show"
LINE_END \n|\r\n
HEX [0][x][0-9a-zA-Z][0-9a-zA-Z]
%s READ_HEX_BYTES
%%
{CMD_HELP}{LINE_END} {telnet_write_help(yyextra->fd.fd); yyterminate();}
{CMD_EXIT}{LINE_END} {telnet_close_client(&yyextra->fd); yyterminate();}
{CMD_CLOSE}{LINE_END} {telnet_close_client(&yyextra->fd); yyterminate();}
{CMD_SHOW}{LINE_END} {telnet_list_channels(yyextra); yyterminate();}
{CMD_PAGE}[ ][0-9]+{LINE_END} {
PREPARE_STRING(PAGE_LEN)
telnet_page(yyextra, str, 0);
yyterminate();
}
{CMD_PAGE}[ ][0-9]+[ ][0-2]{LINE_END} {
PREPARE_STRING(PAGE_LEN)
char *sp = strstr(str, " ");
sp[0] = '\0';
telnet_page(yyextra, str, atoi(sp+1));
yyterminate();
}
{CMD_PUT_CHANNEL}[ ][0-9]+{LINE_END} {
PREPARE_STRING(PUT_LEN)
telnet_put_channel(yyextra, str);
yyterminate();
}
{CMD_GET_CHANNEL}[ ][0-9]+{LINE_END} {
PREPARE_STRING(GET_LEN)
telnet_get_channel(yyextra, str);
yyterminate();
}
{CMD_CALL}[ ][0-9]+[ ][0-9]+{LINE_END} {
PREPARE_STRING(CALL_LEN)
char *sp = strstr(str, " ");
sp[0] = '\0';
telnet_call(yyextra, str, sp+1);
yyterminate();
}
{CMD_CALL}[ ][0-9]+{LINE_END} {
PREPARE_STRING(CALL_LEN)
telnet_call(yyextra, str, NULL);
yyterminate();
}
<READ_HEX_BYTES>{HEX} {
if (yyextra->read >= sizeof(yyextra->commands)) {
yyterminate();
}
yytext[yyleng] = '\0';
yyextra->commands[yyextra->read++] = parse_hex(yytext+2);
}
<READ_HEX_BYTES>{LINE_END} {
if (yyextra->command == TELNET_COMMAND_11) {
telnet_send_gsm_11(yyextra);
} else if (yyextra->command == TELNET_COMMAND_48) {
telnet_send_gsm_48(yyextra);
}
if (yyextra->imsi) {
free(yyextra->imsi);
yyextra->imsi = NULL;
}
yyterminate();
}
<INITIAL>{CMD_48}[ ][0-9]+ {
BEGIN READ_HEX_BYTES;
yyextra->read = 0;
yyextra->command = TELNET_COMMAND_48;
yytext[yyleng-1] = '\0';
yyextra->imsi = strdup(yytext);
}
<INITIAL>{CMD_11}[ ][0-9]+ {
BEGIN READ_HEX_BYTES;
yyextra->read = 0;
yyextra->command = TELNET_COMMAND_11;
yytext[yyleng-1] = '\0';
yyextra->imsi = strdup(yytext);
}
[ \t\r\n] /* Ommit */
. { telnet_error_client(yyextra->fd.fd); yyterminate(); }
%%
void telnet_parse(struct telnet_connection *conn, char *buf)
{
yyscan_t scanner;
yylex_init(&scanner);
yyset_extra(conn, scanner);
yy_scan_string(buf, scanner);
yylex(scanner);
yylex_destroy(scanner);
if (conn->imsi) {
free(conn->imsi);
conn->imsi = NULL;
}
}
__attribute__((unused)) void telnet_unused(void)
{
yyunput(0, 0, 0);
input(0);
}