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sipcapture.c
3259 lines (2720 loc) · 80.3 KB
/
sipcapture.c
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/*
* sipcapture module - helper module to capture sip messages
*
* Copyright (C) 2011-2015 Alexandr Dubovikov (alexandr.dubovikov@gmail.com)
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio 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
*
* Kamailio 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
*
*/
/*! \file
* sipcapture module - helper module to capture sip messages
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/if.h>
#include <netdb.h>
#include <arpa/inet.h>
/* BPF structure */
#ifdef __OS_linux
#include <linux/filter.h>
#endif
#ifndef __USE_BSD
#define __USE_BSD /* on linux use bsd version of iphdr (more portable) */
#endif /* __USE_BSD */
#include <netinet/ip.h>
#define __FAVOR_BSD /* on linux use bsd version of udphdr (more portable) */
#include <netinet/udp.h>
#include "../../core/sr_module.h"
#include "../../core/dprint.h"
#include "../../core/events.h"
#include "../../core/ut.h"
#include "../../core/ip_addr.h"
#include "../../core/mem/mem.h"
#include "../../core/mem/shm_mem.h"
#include "../../core/rpc.h"
#include "../../core/rpc_lookup.h"
#include "../../lib/srdb1/db.h"
#include "../../core/parser/contact/parse_contact.h"
#include "../../core/parser/parse_content.h"
#include "../../core/parser/parse_from.h"
#include "../../core/parser/parse_uri.h"
#include "../../core/parser/digest/digest.h"
#include "../../core/parser/parse_ppi_pai.h"
#include "../../core/parser/parse_rpid.h"
#include "../../core/forward.h"
#include "../../core/pvar.h"
#include "../../core/str.h"
#include "../../core/onsend.h"
#include "../../core/resolve.h"
#include "../../core/receive.h"
#include "../../core/mod_fix.h"
#include "../../core/rand/kam_rand.h"
#include "../../core/kemi.h"
#include "sipcapture.h"
#include "hash_mode.h"
#include "hep.h"
#ifdef STATISTICS
#include "../../core/counters.h"
#endif
#include "../topoh/api.h"
MODULE_VERSION
#define ETHHDR 14 /* sizeof of ethhdr structure */
#define EMPTY_STR(val) \
val.s = ""; \
val.len = 0;
#define TABLE_LEN 256
#define NR_KEYS 44
#define RTCP_NR_KEYS 12
#define MAX_HEADERS 16
/*multiple table mode*/
enum e_mt_mode
{
mode_random = 1,
mode_hash,
mode_round_robin,
mode_error
};
typedef struct _capture_mode_data
{
unsigned int id;
str name;
str db_url;
db1_con_t *db_con;
db_func_t db_funcs;
str *table_names;
unsigned int no_tables;
enum e_mt_mode mtmode;
enum hash_source hash_source;
unsigned int rr_idx;
stat_var *sipcapture_req;
stat_var *sipcapture_rpl;
struct _capture_mode_data *next;
} _capture_mode_data_t;
_capture_mode_data_t *capture_modes_root = NULL;
_capture_mode_data_t *capture_def = NULL;
/* module function prototypes */
static int mod_init(void);
static int sipcapture_init_rpc(void);
static int child_init(int rank);
static void destroy(void);
static int sipcapture_fixup(void **param, int param_no);
static int reportcapture_fixup(void **param, int param_no);
static int float2int_fixup(void **param, int param_no);
static int pv_get_hep(sip_msg_t *msg, pv_param_t *param, pv_value_t *res);
static int pv_parse_hep_name(pv_spec_p sp, str *in);
static int sip_capture(sip_msg_t *msg, str *dtable,
_capture_mode_data_t *cm_data);
static int report_capture(sip_msg_t *msg, str *_table, str *_corr, str *_data);
static int w_sip_capture0(sip_msg_t *_m, char *_p1, char *_p2);
static int w_sip_capture1(sip_msg_t *_m, char *_table, char *_p2);
static int w_sip_capture2(sip_msg_t *_m, char *_table, char *_cmdata);
static int w_sip_capture(struct sip_msg *_m, char *_table,
_capture_mode_data_t *_cm_data);
static int w_report_capture1(sip_msg_t *_m, char *_table, char *_p2);
static int w_report_capture2(sip_msg_t *_m, char *_table, char *_corr);
static int w_report_capture3(sip_msg_t *_m, char *_table, char *_corr,
char *_data);
static int w_float2int(sip_msg_t *_m, char *_val, char *_coof);
static int w_sip_capture_forward(sip_msg_t *_m, char *_dst, char *_p2);
static int sipcapture_parse_aleg_callid_headers();
int parse_aleg_callid_headers(str *headers_str, str *headers);
int init_rawsock_children(void);
int extract_host_port(void);
int raw_capture_socket(struct ip_addr *ip, str *iface, int port_start,
int port_end, int proto);
int raw_capture_rcv_loop(int rsock, int port1, int port2, int ipip);
static int nosip_hep_msg(sr_event_param_t *evp);
static int hep_version(struct sip_msg *msg);
static str db_url = str_init(DEFAULT_DB_URL);
static str table_name = str_init("sip_capture");
static str hash_source = str_init("call_id");
static str table_time_sufix = str_init("%Y%m%D");
static str mt_mode = str_init("rand");
static str date_column = str_init("date");
static str micro_ts_column = str_init("micro_ts");
static str method_column = str_init("method");
static str reply_reason_column = str_init("reply_reason");
static str correlation_column = str_init("correlation_id");
static str ruri_column = str_init("ruri");
static str ruri_user_column = str_init("ruri_user");
static str ruri_domain_column = str_init("ruri_domain");
static str from_user_column = str_init("from_user");
static str from_domain_column = str_init("from_domain");
static str from_tag_column = str_init("from_tag");
static str to_user_column = str_init("to_user");
static str to_domain_column = str_init("to_domain");
static str to_tag_column = str_init("to_tag");
static str pid_user_column = str_init("pid_user");
static str contact_user_column = str_init("contact_user");
static str auth_user_column = str_init("auth_user");
static str callid_column = str_init("callid");
static str callid_aleg_column = str_init("callid_aleg");
static str via_1_column = str_init("via_1");
static str via_1_branch_column = str_init("via_1_branch");
static str cseq_column = str_init("cseq");
static str diversion_column = str_init("diversion");
static str reason_column = str_init("reason");
static str content_type_column = str_init("content_type");
static str authorization_column = str_init("auth");
static str user_agent_column = str_init("user_agent");
static str source_ip_column = str_init("source_ip");
static str source_port_column = str_init("source_port");
static str dest_ip_column = str_init("destination_ip");
static str dest_port_column = str_init("destination_port");
static str contact_ip_column = str_init("contact_ip");
static str contact_port_column = str_init("contact_port");
static str orig_ip_column = str_init("originator_ip");
static str orig_port_column = str_init("originator_port");
static str rtp_stat_column = str_init("rtp_stat");
static str proto_column = str_init("proto");
static str family_column = str_init("family");
static str type_column = str_init("type");
static str node_column = str_init("node");
static str msg_column = str_init("msg");
static str custom_field1_column = str_init("custom_field1");
static str custom_field2_column = str_init("custom_field2");
static str custom_field3_column = str_init("custom_field3");
static str capture_node = str_init("homer01");
static str star_contact = str_init("*");
static str callid_aleg_header = str_init("X-CID");
static str custom_field1_header = str_init("Mac");
static str custom_field2_header = str_init("IP");
static str custom_field3_header = str_init("Port");
int raw_sock_desc = -1; /* raw socket used for ip packets */
unsigned int raw_sock_children = 1;
int capture_on = 0;
int ipip_capture_on = 0;
int moni_capture_on = 0;
int moni_port_start = 0;
int moni_port_end = 0;
int *capture_on_flag = NULL;
int db_insert_mode = 0;
int promisc_on = 0;
int bpf_on = 0;
int hep_capture_on = 0;
int insert_retries = 0;
int insert_retry_timeout = 60;
int hep_offset = 0;
str raw_socket_listen = {0, 0};
str raw_interface = {0, 0};
char *authkey = NULL, *correlation_id = NULL;
str callid_aleg_headers[MAX_HEADERS];
int n_callid_aleg_headers = 0;
str sc_event_callback = STR_NULL;
struct ifreq ifr; /* interface structure */
/* by default nonsip_hook is inactive */
static int nonsip_hook = 0;
static int hep_route_no = -1;
static int sc_topoh_unmask = 0;
static topoh_api_t thb = {0};
#ifdef __OS_linux
/* Linux socket filter */
/* tcpdump -s 0 udp and portrange 5060-5090 -dd */
static struct sock_filter BPF_code[] = {
{0x28, 0, 0, 0x0000000c}, {0x15, 0, 7, 0x000086dd},
{0x30, 0, 0, 0x00000014}, {0x15, 0, 18, 0x00000011},
{0x28, 0, 0, 0x00000036}, {0x35, 0, 1, 0x000013c4},
{0x25, 0, 14, 0x000013e2}, {0x28, 0, 0, 0x00000038},
{0x35, 11, 13, 0x000013c4}, {0x15, 0, 12, 0x00000800},
{0x30, 0, 0, 0x00000017}, {0x15, 0, 10, 0x00000011},
{0x28, 0, 0, 0x00000014}, {0x45, 8, 0, 0x00001fff},
{0xb1, 0, 0, 0x0000000e}, {0x48, 0, 0, 0x0000000e},
{0x35, 0, 1, 0x000013c4}, {0x25, 0, 3, 0x000013e2},
{0x48, 0, 0, 0x00000010}, {0x35, 0, 2, 0x000013c4},
{0x25, 1, 0, 0x000013e2}, {0x6, 0, 0, 0x0000ffff},
{0x6, 0, 0, 0x00000000},
};
#endif
//db1_con_t *db_con = NULL; /*!< database connection */
//db_func_t db_funcs; /*!< Database functions */
//str* table_names = NULL;
unsigned int no_tables = 0;
enum e_mt_mode mtmode = mode_random;
enum hash_source source = hs_error;
//unsigned int rr_idx = 0;
struct hep_timeinfo *heptime;
/*! \brief
* Exported functions
*/
static cmd_export_t cmds[] = {
{"sip_capture", (cmd_function)w_sip_capture0, 0, 0, 0,
ANY_ROUTE},
{"sip_capture", (cmd_function)w_sip_capture1, 1, sipcapture_fixup, 0,
ANY_ROUTE},
{"sip_capture", (cmd_function)w_sip_capture2, 2, sipcapture_fixup, 0,
ANY_ROUTE},
{"report_capture", (cmd_function)w_report_capture1, 1,
reportcapture_fixup, 0, ANY_ROUTE},
{"report_capture", (cmd_function)w_report_capture2, 2,
reportcapture_fixup, 0, ANY_ROUTE},
{"report_capture", (cmd_function)w_report_capture3, 3,
reportcapture_fixup, 0, ANY_ROUTE},
{"float2int", (cmd_function)w_float2int, 2, float2int_fixup, 0,
ANY_ROUTE},
{"sip_capture_forward", (cmd_function)w_sip_capture_forward, 1,
fixup_spve_null, 0, ANY_ROUTE},
{0, 0, 0, 0, 0, 0}};
static pv_export_t mod_pvs[] = {
{{"hep", sizeof("hep") - 1}, PVT_OTHER, pv_get_hep, 0,
pv_parse_hep_name, 0, 0, 0},
{{0, 0}, 0, 0, 0, 0, 0, 0, 0}
};
int capture_mode_param(modparam_t type, void *val);
/*! \brief
* Exported parameters
*/
static param_export_t params[] = {
{"db_url", PARAM_STR, &db_url},
{"table_name", PARAM_STR, &table_name},
{"hash_source", PARAM_STR, &hash_source},
{"mt_mode", PARAM_STR, &mt_mode},
{"date_column", PARAM_STR, &date_column},
{"micro_ts_column", PARAM_STR, µ_ts_column},
{"method_column", PARAM_STR, &method_column},
{"correlation_column", PARAM_STR, &correlation_column.s},
{"reply_reason_column", PARAM_STR, &reply_reason_column},
{"ruri_column", PARAM_STR, &ruri_column},
{"ruri_user_column", PARAM_STR, &ruri_user_column},
{"ruri_domain_column", PARAM_STR, &ruri_domain_column},
{"from_user_column", PARAM_STR, &from_user_column},
{"from_domain_column", PARAM_STR, &from_domain_column},
{"from_tag_column", PARAM_STR, &from_tag_column},
{"to_user_column", PARAM_STR, &to_user_column},
{"to_domain_column", PARAM_STR, &to_domain_column},
{"to_tag_column", PARAM_STR, &to_tag_column},
{"pid_user_column", PARAM_STR, &pid_user_column},
{"contact_user_column", PARAM_STR, &contact_user_column},
{"auth_user_column", PARAM_STR, &auth_user_column},
{"callid_column", PARAM_STR, &callid_column},
{"callid_aleg_column", PARAM_STR, &callid_aleg_column},
{"via_1_column", PARAM_STR, &via_1_column},
{"via_1_branch_column", PARAM_STR, &via_1_branch_column},
{"cseq_column", PARAM_STR, &cseq_column},
{"diversion_column", PARAM_STR, &diversion_column},
{"reason_column", PARAM_STR, &reason_column},
{"content_type_column", PARAM_STR, &content_type_column},
{"authorization_column", PARAM_STR, &authorization_column},
{"user_agent_column", PARAM_STR, &user_agent_column},
{"source_ip_column", PARAM_STR, &source_ip_column},
{"source_port_column", PARAM_STR, &source_port_column},
{"destination_ip_column", PARAM_STR, &dest_ip_column},
{"destination_port_column", PARAM_STR, &dest_port_column},
{"contact_ip_column", PARAM_STR, &contact_ip_column},
{"contact_port_column", PARAM_STR, &contact_port_column},
{"originator_ip_column", PARAM_STR, &orig_ip_column},
{"originator_port_column", PARAM_STR, &orig_port_column},
{"proto_column", PARAM_STR, &proto_column},
{"family_column", PARAM_STR, &family_column},
{"rtp_stat_column", PARAM_STR, &rtp_stat_column},
{"type_column", PARAM_STR, &type_column},
{"node_column", PARAM_STR, &node_column},
{"msg_column", PARAM_STR, &msg_column},
{"custom_field1_column", PARAM_STR, &custom_field1_column},
{"custom_field2_column", PARAM_STR, &custom_field2_column},
{"custom_field3_column", PARAM_STR, &custom_field3_column},
{"capture_on", INT_PARAM, &capture_on},
{"capture_node", PARAM_STR, &capture_node},
{"raw_sock_children", INT_PARAM, &raw_sock_children},
{"hep_capture_on", INT_PARAM, &hep_capture_on},
{"raw_socket_listen", PARAM_STR, &raw_socket_listen},
{"raw_ipip_capture_on", INT_PARAM, &ipip_capture_on},
{"raw_moni_capture_on", INT_PARAM, &moni_capture_on},
{"db_insert_mode", INT_PARAM, &db_insert_mode},
{"raw_interface", PARAM_STR, &raw_interface},
{"promiscious_on", INT_PARAM, &promisc_on},
{"raw_moni_bpf_on", INT_PARAM, &bpf_on},
{"callid_aleg_header", PARAM_STR, &callid_aleg_header},
{"custom_field1_header", PARAM_STR, &custom_field1_header},
{"custom_field2_header", PARAM_STR, &custom_field2_header},
{"custom_field3_header", PARAM_STR, &custom_field3_header},
{"capture_mode", PARAM_STRING | USE_FUNC_PARAM,
(void *)capture_mode_param},
{"insert_retries", INT_PARAM, &insert_retries},
{"insert_retry_timeout", INT_PARAM, &insert_retry_timeout},
{"table_time_sufix", PARAM_STR, &table_time_sufix},
{"topoh_unmask", PARAM_INT, &sc_topoh_unmask},
{"nonsip_hook", PARAM_INT, &nonsip_hook},
{"event_callback", PARAM_STR, &sc_event_callback},
{0, 0, 0}
};
#ifdef STATISTICS
/*
stat_var* sipcapture_req;
stat_var* sipcapture_rpl;
stat_export_t sipcapture_stats[] = {
{"captured_requests" , 0, &sipcapture_req },
{"captured_replies" , 0, &sipcapture_rpl },
{0,0,0}
};
*/
stat_export_t *sipcapture_stats = NULL;
#endif
/*! \brief module exports */
struct module_exports exports = {
"sipcapture", /* module name */
DEFAULT_DLFLAGS, /* dlopen flags */
cmds, /* cmd (cfg function) exports */
params, /* param exports */
0, /* RPC method exports */
mod_pvs, /* pseudo-variables exports */
0, /* response handling function */
mod_init, /* module init function */
child_init, /* per-child init function */
destroy /* module destroy function */
};
/* returns number of tables if successful
* <0 if failed
*/
int parse_table_names(str table_name, str **table_names)
{
char *p = NULL;
unsigned int no_tables;
char *table_name_cpy;
unsigned int i;
/*parse and save table names*/
no_tables = 1;
i = 0;
str *names;
table_name_cpy = (char *)pkg_malloc(sizeof(char) * table_name.len + 1);
if(table_name_cpy == NULL) {
LM_ERR("no more pkg memory left\n");
return -1;
}
memcpy(table_name_cpy, table_name.s, table_name.len);
table_name_cpy[table_name.len] = '\0';
p = table_name_cpy;
while(*p) {
if(*p == '|') {
no_tables++;
}
p++;
}
names = (str *)pkg_malloc(sizeof(str) * no_tables);
if(names == NULL) {
LM_ERR("no more pkg memory left\n");
pkg_free(table_name_cpy);
return -1;
}
p = strtok(table_name_cpy, "| \t");
while(p != NULL) {
LM_INFO("INFO: table name:%s\n", p);
names[i].len = strlen(p);
names[i].s = (char *)pkg_malloc(sizeof(char) * names[i].len);
memcpy(names[i].s, p, names[i].len);
i++;
p = strtok(NULL, "| \t");
}
pkg_free(table_name_cpy);
*table_names = names;
return no_tables;
}
/* checks for some missing fields*/
int check_capture_mode(_capture_mode_data_t *n)
{
if(!n->db_url.s || !n->db_url.len) {
LM_ERR("db_url not set\n");
goto error;
}
if(!n->mtmode) {
LM_ERR("mt_mode not set\n");
goto error;
} else if(!n->no_tables || !n->table_names) {
LM_ERR("table names not set\n");
goto error;
}
return 0;
error:
LM_ERR("parsing capture_mode: not all needed parameters are set. Please "
"check again\n");
return -1;
}
int capture_mode_set_params(_capture_mode_data_t *n, str *params)
{
param_t *params_list = NULL;
param_hooks_t phooks;
param_t *pit = NULL;
db_func_t db_funcs;
str s;
LM_DBG("to tokenize: [%.*s]\n", params->len, params->s);
if(n == NULL || params == NULL)
return -1;
s = *params;
if(parse_params(&s, CLASS_ANY, &phooks, ¶ms_list) < 0)
return -1;
for(pit = params_list; pit; pit = pit->next) {
LM_DBG("parameter is [%.*s]\n", pit->name.len, pit->name.s);
LM_DBG("parameter value is [%.*s]\n", pit->body.len, pit->body.s);
if(pit->name.len == 6
&& strncmp(pit->name.s, "db_url", pit->name.len) == 0) {
n->db_url.len = pit->body.len;
n->db_url.s = (char *)pkg_malloc(sizeof(char) * n->db_url.len);
if(!n->db_url.s) {
LM_ERR("no more pkg memory\n");
goto error;
}
memcpy(n->db_url.s, pit->body.s, n->db_url.len);
if(db_bind_mod(&n->db_url, &db_funcs)) {
LM_ERR("parsing capture_mode: could not bind db funcs for "
"url:[%.*s]\n",
n->db_url.len, n->db_url.s);
goto error;
}
n->db_funcs = db_funcs;
if(!DB_CAPABILITY(n->db_funcs, DB_CAP_INSERT)) {
LM_ERR("parsing capture_mode: database modules does not "
"provide all functions needed"
" by module\n");
goto error;
}
}
else if(pit->name.len == 10
&& strncmp(pit->name.s, "table_name", pit->name.len) == 0) {
if((int)(n->no_tables =
parse_table_names(pit->body, &n->table_names))
< 0) {
LM_ERR("parsing capture_mode: table name parsing failed\n");
goto error;
}
} else if(pit->name.len == 7
&& strncmp(pit->name.s, "mt_mode", pit->name.len) == 0) {
if(pit->body.len == 4
&& strncmp(pit->body.s, "rand", pit->body.len) == 0) {
n->mtmode = mode_random;
} else if(pit->body.len == 11
&& strncmp(pit->body.s, "round_robin", pit->body.len)
== 0) {
n->mtmode = mode_round_robin;
} else if(pit->body.len == 4
&& strncmp(pit->body.s, "hash", pit->body.len) == 0) {
n->mtmode = mode_hash;
} else {
LM_ERR("parsing capture_mode: capture mode not recognized: "
"[%.*s]\n",
pit->body.len, pit->body.s);
goto error;
}
} else if(pit->name.len == 11
&& strncmp(pit->name.s, "hash_source", pit->name.len) == 0) {
if((n->hash_source = get_hash_source(pit->body.s)) == hs_error) {
LM_ERR("parsing capture_mode: hash source unrecognized: "
"[%.*s]\n",
pit->body.len, pit->body.s);
goto error;
}
}
}
if(n->mtmode == mode_hash
&& (n->hash_source == 0 || n->hash_source == hs_error)) {
LM_WARN("Hash mode set, but no hash source provided for [%.*s]. Will "
"consider hashing by call id.\n",
n->name.len, n->name.s);
n->hash_source = hs_call_id;
}
if(check_capture_mode(n)) {
goto error;
}
return 0;
error:
if(n->db_url.s) {
pkg_free(n->db_url.s);
}
return -1;
}
void *capture_mode_init(str *name, str *params)
{
_capture_mode_data_t *n = NULL;
unsigned int id;
if(!name || name->len == 0) {
LM_ERR("capture_mode name is empty\n");
goto error;
}
if(!params || params->len == 0) {
LM_ERR("capture_mode params are empty\n");
goto error;
}
id = core_case_hash(name, 0, 0);
n = (_capture_mode_data_t *)pkg_malloc(sizeof(_capture_mode_data_t));
if(!n) {
LM_ERR("no more pkg memory\n");
goto error;
}
memset(n, 0, sizeof(_capture_mode_data_t));
n->id = id;
n->name.len = name->len;
n->name.s = (char *)pkg_malloc(sizeof(char) * n->name.len);
if(!n->name.s) {
LM_ERR("no more pkg memory\n");
goto error;
}
memcpy(n->name.s, name->s, n->name.len);
n->table_names = (str *)pkg_malloc(sizeof(str));
if(!n->table_names) {
LM_ERR("no more pkg memory\n");
goto error;
}
if(capture_mode_set_params(n, params) < 0) {
LM_ERR("capture mode parsing failed\n");
goto error;
}
n->next = capture_modes_root;
capture_modes_root = n;
return n;
error:
if(n) {
if(n->name.s) {
pkg_free(n->name.s);
}
if(n->table_names) {
pkg_free(n->table_names);
}
pkg_free(n);
}
return 0;
}
/*parse name=>param1=>val1;param2=>val2;..*/
int capture_mode_param(modparam_t type, void *val)
{
str name;
str in;
str tok;
char *p;
in.s = val;
in.len = strlen(in.s);
p = in.s;
while(p < in.s + in.len
&& (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r'))
p++;
if(p > in.s + in.len || *p == '\0')
goto error;
name.s = p;
while(p < in.s + in.len) {
if(*p == '=' || *p == ' ' || *p == '\t' || *p == '\n' || *p == '\r')
break;
p++;
}
if(p > in.s + in.len || *p == '\0')
goto error;
name.len = p - name.s;
if(*p != '=') {
while(p < in.s + in.len
&& (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r'))
p++;
if(p > in.s + in.len || *p == '\0' || *p != '=')
goto error;
}
p++;
if(*p != '>')
goto error;
p++;
while(p < in.s + in.len
&& (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r'))
p++;
tok.s = p;
tok.len = in.len + (int)(in.s - p);
LM_DBG("capture_mode name: [%.*s] data: [%.*s]\n", name.len, name.s,
tok.len, tok.s);
if(!capture_mode_init(&name, &tok)) {
return -1;
}
return 0;
error:
LM_ERR("invalid parameter [%.*s] at [%d]\n", in.len, in.s, (int)(p - in.s));
return -1;
}
/*! \brief Initialize sipcapture module */
static int mod_init(void)
{
struct ip_addr *ip = NULL;
char *def_params = NULL;
sr_kemi_eng_t *keng = NULL;
#ifdef STATISTICS
int cnt = 0;
int i = 0;
char *stat_name = NULL;
_capture_mode_data_t *c = NULL;
int def;
#endif
if(sipcapture_init_rpc() != 0) {
LM_ERR("failed to register RPC commands\n");
return -1;
}
if(sc_topoh_unmask == 1) {
/* bind the topoh API */
if(topoh_load_api(&thb) != 0) {
LM_ERR("cannot bind to topoh API\n");
return -1;
}
}
/* Check the table name - if table_name is empty and no capture modes
* are defined, then error*/
if(!table_name.len && capture_modes_root == NULL) {
LM_ERR("ERROR: sipcapture: mod_init: table_name is not defined or "
"empty\n");
return -1;
}
/*create a default capture mode using the default parameters*/
def_params = (char *)pkg_malloc(
snprintf(NULL, 0,
"db_url=%s;table_name=%s;mt_mode=%s;hash_source=%s",
db_url.s, table_name.s, mt_mode.s, hash_source.s)
+ 1);
sprintf(def_params, "db_url=%s;table_name=%s;mt_mode=%s;hash_source=%s",
db_url.s, table_name.s, mt_mode.s, hash_source.s);
str def_name, def_par;
def_name.s = strdup("default");
def_name.len = 7;
def_par.s = def_params;
def_par.len = strlen(def_params);
LM_DBG("def_params is: %s\n", def_params);
if((capture_def = capture_mode_init(&def_name, &def_par)) == NULL) {
LM_WARN("Default capture mode configuration failed. Suppose "
"sip_capture calls will use other defined capture modes.\n");
}
pkg_free(def_params);
if(sipcapture_parse_aleg_callid_headers() < 0) {
return -1;
}
#ifdef STATISTICS
int route_no;
c = capture_modes_root;
while(c) {
cnt++;
c = c->next;
}
/*requests and replies for each mode + 1 zero-filled stat_export */
stat_export_t *stats =
(stat_export_t *)shm_malloc(sizeof(stat_export_t) * cnt * 2 + 1);
c = capture_modes_root;
while(c) {
/*for the default capture_mode, don't add it's name to the stat name*/
def = (capture_def && c == capture_def) ? 1 : 0;
stat_name = (char *)shm_malloc(
sizeof(char)
* (snprintf(NULL, 0,
(def) ? "captured_requests%.*s"
: "captured_requests[%.*s]",
(def) ? 0 : c->name.len, (def) ? "" : c->name.s)
+ 1));
sprintf(stat_name,
(def) ? "captured_requests%.*s" : "captured_requests[%.*s]",
(def) ? 0 : c->name.len, (def) ? "" : c->name.s);
stats[i].name = stat_name;
stats[i].flags = 0;
stats[i].stat_pointer = &c->sipcapture_req;
i++;
stat_name = (char *)shm_malloc(
sizeof(char)
* (snprintf(NULL, 0,
(def) ? "captured_replies%.*s"
: "captured_replies[%.*s]",
(def) ? 0 : c->name.len, (def) ? "" : c->name.s)
+ 1));
sprintf(stat_name,
(def) ? "captured_replies%.*s" : "captured_replies[%.*s]",
(def) ? 0 : c->name.len, (def) ? "" : c->name.s);
stats[i].name = stat_name;
stats[i].flags = 0;
stats[i].stat_pointer = &c->sipcapture_rpl;
i++;
c = c->next;
}
stats[i].name = 0;
stats[i].flags = 0;
stats[i].stat_pointer = 0;
sipcapture_stats = stats;
/* register statistics */
if(register_module_stats(exports.name, sipcapture_stats) != 0) {
LM_ERR("failed to register core statistics\n");
return -1;
}
#endif
kam_srand(time(NULL));
if(db_insert_mode) {
LM_INFO("INFO: sipcapture: mod_init: you have enabled INSERT DELAYED \
Make sure your DB can support it\n");
}
capture_on_flag = (int *)shm_malloc(sizeof(int));
if(capture_on_flag == NULL) {
LM_ERR("no more shm memory left\n");
return -1;
}
*capture_on_flag = capture_on;
if(nonsip_hook) {
if(sc_event_callback.s == NULL || sc_event_callback.len <= 0) {
route_no = route_get(&event_rt, "sipcapture:request");
if(route_no == -1) {
LM_ERR("failed to find event_route[sipcapture:request]\n");
return -1;
}
if(event_rt.rlist[route_no] == 0) {
LM_ERR("event_route[sipcapture:request] is empty\n");
return -1;
}
hep_route_no = route_no;
} else {
hep_route_no = -1;
keng = sr_kemi_eng_get();
if(keng == NULL) {
LM_DBG("event callback (%s) set, but no cfg engine\n",
sc_event_callback.s);
return -1;
}
}
if(sr_event_register_cb(SREV_RCV_NOSIP, nosip_hep_msg) < 0) {
LM_ERR("failed to register SREV_RCV_NOSIP event\n");
return -1;
}
} else {
/* register DGRAM event */
if(sr_event_register_cb(SREV_NET_DGRAM_IN, hep_msg_received) < 0) {
LM_ERR("failed to register SREV_NET_DGRAM_IN event\n");
return -1;
}
}
if(ipip_capture_on && moni_capture_on) {
LM_ERR("only one RAW mode is supported. Please disable ipip_capture_on "
"or moni_capture_on\n");
return -1;
}
if((insert_retries < 0) || (insert_retries > 500)) {
LM_ERR("insert_retries should be a value between 0 and 500\n");
return -1;
}
if((0 == insert_retries) && (insert_retry_timeout != 0)) {
LM_ERR("insert_retry_timeout has no meaning when insert_retries is not "
"set\n");
}
if((insert_retry_timeout < 0) || (insert_retry_timeout > 300)) {
LM_ERR("insert_retry_timeout should be a value between 0 and 300\n");
return -1;
}
/* raw processes for IPIP encapsulation */
if(ipip_capture_on || moni_capture_on) {
register_procs(raw_sock_children);
if(extract_host_port()
&& (((ip = str2ip(&raw_socket_listen)) == NULL)
&& ((ip = str2ip6(&raw_socket_listen)) == NULL))) {
LM_ERR("sipcapture mod_init: bad RAW IP: %.*s\n",
raw_socket_listen.len, raw_socket_listen.s);
return -1;
}
if(moni_capture_on && !moni_port_start) {
LM_ERR("ERROR:sipcapture:mod_init: Please define port/portrange"
" in 'raw_socket_listen', before activate"
" monitoring capture\n");
return -1;
}
raw_sock_desc = raw_capture_socket(raw_socket_listen.len ? ip : 0,
raw_interface.len ? &raw_interface : 0, moni_port_start,
moni_port_end, ipip_capture_on ? IPPROTO_IPIP : htons(0x0800));
if(raw_sock_desc < 0) {
LM_ERR("could not initialize raw udp socket:"
" %s (%d)\n",
strerror(errno), errno);
if(errno == EPERM)
LM_ERR("could not initialize raw socket on startup"
" due to inadequate permissions, please"
" restart as root or with CAP_NET_RAW\n");
return -1;
}
if(promisc_on && raw_interface.len) {
memset(&ifr, 0, sizeof(ifr));
memcpy(ifr.ifr_name, raw_interface.s, raw_interface.len);
#ifdef __OS_linux
if(ioctl(raw_sock_desc, SIOCGIFFLAGS, &ifr) < 0) {
LM_ERR("could not get flags from interface [%.*s]:"
" %s (%d)\n",
raw_interface.len, raw_interface.s, strerror(errno),
errno);
goto error;
}
ifr.ifr_flags |= IFF_PROMISC;
if(ioctl(raw_sock_desc, SIOCSIFFLAGS, &ifr) < 0) {
LM_ERR("could not set PROMISC flag to interface [%.*s]:"
" %s (%d)\n",
raw_interface.len, raw_interface.s, strerror(errno),