sgsn: Moved IMSI ACL management to sgsn_auth.c
Currently the ACL code is located in sgsn_vty.c. This commit moves this to a new file sgsn_auth.c as a first step to make authorization more flexible in order to implement remote acquisition on subsciber data. Sponsored-by: On-Waves ehf
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fb26c60a2f
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3b5d407203
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@ -242,8 +242,17 @@ int sgsn_ctrl_cmds_install(void);
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/*
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* ACL handling
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*/
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struct imsi_acl_entry;
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struct imsi_acl_entry *sgsn_acl_lookup(const char *imsi);
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struct imsi_acl_entry {
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struct llist_head list;
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char imsi[16+1];
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};
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struct sgsn_config;
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struct sgsn_instance;
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void sgsn_auth_init(struct sgsn_instance *sgi);
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struct imsi_acl_entry *sgsn_acl_lookup(const char *imsi, struct sgsn_config *cfg);
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int sgsn_acl_add(const char *imsi, struct sgsn_config *cfg);
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int sgsn_acl_del(const char *imsi, struct sgsn_config *cfg);
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int gprs_sndcp_vty_init(void);
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struct sgsn_instance;
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@ -22,7 +22,7 @@ osmo_gbproxy_LDADD = $(top_builddir)/src/libcommon/libcommon.a \
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osmo_sgsn_SOURCES = gprs_gmm.c gprs_sgsn.c gprs_sndcp.c gprs_sndcp_vty.c \
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sgsn_main.c sgsn_vty.c sgsn_libgtp.c \
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gprs_llc.c gprs_llc_parse.c gprs_llc_vty.c crc24.c \
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sgsn_ctrl.c
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sgsn_ctrl.c sgsn_auth.c
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osmo_sgsn_LDADD = \
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$(top_builddir)/src/libcommon/libcommon.a \
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-lgtp $(OSMO_LIBS) $(LIBOSMOABIS_LIBS)
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@ -791,7 +791,7 @@ static int gsm48_rx_gmm_att_req(struct sgsn_mm_ctx *ctx, struct msgb *msg,
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snprintf(mccmnc, sizeof(mccmnc), "%03d%02d", ra_id.mcc, ra_id.mnc);
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if (strncmp(mccmnc, mi_string, 5) &&
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(sgsn->cfg.acl_enabled &&
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!sgsn_acl_lookup(mi_string))) {
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!sgsn_acl_lookup(mi_string, &sgsn->cfg))) {
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LOGP(DMM, LOGL_NOTICE, "Rejecting ATTACH REQUEST IMSI=%s\n",
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mi_string);
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return gsm48_tx_gmm_att_rej_oldmsg(msg,
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@ -0,0 +1,71 @@
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/* MS authorization and subscriber data handling */
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/* (C) 2009-2010 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <openbsc/sgsn.h>
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#include <openbsc/gprs_sgsn.h>
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void sgsn_auth_init(struct sgsn_instance *sgi)
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{
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INIT_LLIST_HEAD(&sgi->cfg.imsi_acl);
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}
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/* temporary IMSI ACL hack */
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struct imsi_acl_entry *sgsn_acl_lookup(const char *imsi, struct sgsn_config *cfg)
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{
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struct imsi_acl_entry *acl;
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llist_for_each_entry(acl, &cfg->imsi_acl, list) {
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if (!strcmp(imsi, acl->imsi))
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return acl;
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}
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return NULL;
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}
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int sgsn_acl_add(const char *imsi, struct sgsn_config *cfg)
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{
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struct imsi_acl_entry *acl;
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if (sgsn_acl_lookup(imsi, cfg))
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return -EEXIST;
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acl = talloc_zero(NULL, struct imsi_acl_entry);
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if (!acl)
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return -ENOMEM;
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strncpy(acl->imsi, imsi, sizeof(acl->imsi));
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llist_add(&acl->list, &cfg->imsi_acl);
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return 0;
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}
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int sgsn_acl_del(const char *imsi, struct sgsn_config *cfg)
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{
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struct imsi_acl_entry *acl;
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acl = sgsn_acl_lookup(imsi, cfg);
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if (!acl)
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return -ENODEV;
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llist_del(&acl->list);
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talloc_free(acl);
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return 0;
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}
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@ -345,6 +345,7 @@ int main(int argc, char **argv)
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bssgp_vty_init();
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gprs_llc_vty_init();
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gprs_sndcp_vty_init();
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sgsn_auth_init(&sgsn_inst);
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/* FIXME: register signal handler for SS_L_NS */
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rc = sgsn_parse_config(sgsn_inst.config_file, &sgsn_inst.cfg);
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@ -41,11 +41,6 @@
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static struct sgsn_config *g_cfg = NULL;
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struct imsi_acl_entry {
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struct llist_head list;
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char imsi[16+1];
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};
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#define GSM48_MAX_APN_LEN 102 /* 10.5.6.1 */
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static char *gprs_apn2str(uint8_t *apn, unsigned int len)
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{
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@ -328,48 +323,6 @@ DEFUN(show_pdpctx_all, show_pdpctx_all_cmd,
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return CMD_SUCCESS;
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}
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/* temporary IMSI ACL hack */
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struct imsi_acl_entry *sgsn_acl_lookup(const char *imsi)
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{
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struct imsi_acl_entry *acl;
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llist_for_each_entry(acl, &g_cfg->imsi_acl, list) {
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if (!strcmp(imsi, acl->imsi))
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return acl;
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}
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return NULL;
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}
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int sgsn_acl_add(const char *imsi)
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{
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struct imsi_acl_entry *acl;
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if (sgsn_acl_lookup(imsi))
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return -EEXIST;
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acl = talloc_zero(NULL, struct imsi_acl_entry);
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if (!acl)
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return -ENOMEM;
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strncpy(acl->imsi, imsi, sizeof(acl->imsi));
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llist_add(&acl->list, &g_cfg->imsi_acl);
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return 0;
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}
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int sgsn_acl_del(const char *imsi)
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{
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struct imsi_acl_entry *acl;
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acl = sgsn_acl_lookup(imsi);
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if (!acl)
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return -ENODEV;
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llist_del(&acl->list);
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talloc_free(acl);
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return 0;
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}
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DEFUN(imsi_acl, cfg_imsi_acl_cmd,
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"imsi-acl (add|del) IMSI",
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@ -383,9 +336,9 @@ DEFUN(imsi_acl, cfg_imsi_acl_cmd,
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int rc;
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if (!strcmp(op, "add"))
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rc = sgsn_acl_add(imsi);
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rc = sgsn_acl_add(imsi, g_cfg);
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else
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rc = sgsn_acl_del(imsi);
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rc = sgsn_acl_del(imsi, g_cfg);
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if (rc < 0) {
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vty_out(vty, "%% unable to %s ACL\n", op);
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@ -435,7 +388,6 @@ int sgsn_parse_config(const char *config_file, struct sgsn_config *cfg)
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int rc;
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g_cfg = cfg;
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INIT_LLIST_HEAD(&g_cfg->imsi_acl);
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rc = vty_read_config_file(config_file, NULL);
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if (rc < 0) {
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@ -15,6 +15,7 @@ sgsn_test_LDADD = \
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$(top_builddir)/src/gprs/gprs_sgsn.o \
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$(top_builddir)/src/gprs/sgsn_vty.o \
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$(top_builddir)/src/gprs/sgsn_libgtp.o \
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$(top_builddir)/src/gprs/sgsn_auth.o \
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$(LIBOSMOCORE_LIBS) \
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$(LIBOSMOGSM_LIBS) \
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$(LIBOSMOGB_LIBS) \
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