/
tracer.c
3420 lines (2848 loc) · 85.9 KB
/
tracer.c
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/*
* tracer module - helper module to trace sip messages
*
* Copyright (C) 2006-2009 Voice Sistem S.R.L.
*
* This file is part of opensips, a free SIP server.
*
* opensips 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
*
* opensips 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
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "../../net/net_tcp.h"
#include "../../sr_module.h"
#include "../../dprint.h"
#include "../../ut.h"
#include "../../ip_addr.h"
#include "../../mem/mem.h"
#include "../../mem/shm_mem.h"
#include "../../mi/mi.h"
#include "../../db/db.h"
#include "../../db/db_insertq.h"
#include "../../parser/parse_content.h"
#include "../../parser/parse_from.h"
#include "../../pvar.h"
#include "../../sl_cb.h"
#include "../../str.h"
#include "../../script_cb.h"
#include "../tm/tm_load.h"
#include "../dialog/dlg_load.h"
#include "../../mod_fix.h"
#include "tracer.h"
/* trace info context position */
int sl_ctx_idx=-1;
/* DB structures used for all queries */
db_key_t db_keys[NR_KEYS];
db_val_t db_vals[NR_KEYS];
static db_ps_t siptrace_ps = NULL;
//static query_list_t *ins_list = NULL;
#define trace_id(_tid) ((tlist_elem_p)(_tid))
#define trace_id_dyn(_tid) ((tlist_dyn_elem_p)(_tid))
#define trace_id_ref(_tid) (trace_id_dyn(_tid)->ref++)
#define trace_id_unref(_tid) \
do { \
trace_id_dyn(_tid)->ref--; \
if (trace_id_dyn(_tid)->ref == 0) { \
if (trace_id(_tid)->type == TYPE_HEP) \
tprot.release_trace_dest(trace_id(_tid)->el.hep.hep_id); \
if (trace_id_dyn(_tid)->filters) \
free_trace_filters(trace_id_dyn(_tid)->filters); \
shm_free(_tid); \
} \
} while (0)
struct tm_binds tmb;
struct dlg_binds dlgb;
static trace_proto_t tprot;
/* "sip" tracing identifier */
int sip_trace_id;
/* module function prototypes */
static int mod_init(void);
static int child_init(int rank);
static void destroy(void);
static str siptrace_table = str_init("sip_trace");
static str date_column = str_init("time_stamp"); /* 00 */
static str callid_column = str_init("callid"); /* 01 */
static str trace_attrs_column = str_init("trace_attrs"); /* 02 */
static str msg_column = str_init("msg"); /* 03 */
static str method_column = str_init("method"); /* 04 */
static str status_column = str_init("status"); /* 05 */
static str fromproto_column = str_init("from_proto"); /* 06 */
static str fromip_column = str_init("from_ip"); /* 07 */
static str fromport_column = str_init("from_port"); /* 08 */
static str toproto_column = str_init("to_proto"); /* 09 */
static str toip_column = str_init("to_ip"); /* 10 */
static str toport_column = str_init("to_port"); /* 11 */
static str fromtag_column = str_init("fromtag"); /* 12 */
static str direction_column = str_init("direction"); /* 13 */
int trace_on = 1;
int *trace_on_flag = NULL;
static str trace_local_proto = {NULL, 0};
static str trace_local_ip = {NULL, 0};
static unsigned short trace_local_port = 0;
static tlist_elem_p trace_list=NULL;
static tlist_elem_p *dyn_trace_list=NULL;
static gen_lock_t *dyn_trace_lock;
static const char* corr_id_s="correlation_id";
static int corr_vendor = -1;
static int corr_id=-1;
/**
* TRACER FUNCTIONS
*
* **/
static int fixup_tid(void **param);
static int fixup_sflags(void **param);
static int trace_w(struct sip_msg *msg, tlist_elem_p list,
void *scope_p, str *trace_types_s, str *trace_attrs);
static int sip_trace(struct sip_msg*, trace_info_p);
static int sip_trace_instance(struct sip_msg*, trace_instance_p, int);
static int trace_dialog(struct sip_msg*, trace_info_p);
static int trace_transaction(struct sip_msg* msg, trace_info_p info,
char dlg_tran);
static void trace_onreq_out(struct cell* t, int type, struct tmcb_params *ps);
static void trace_tm_in(struct cell* t, int type, struct tmcb_params *ps);
static void trace_tm_out(struct cell* t, int type, struct tmcb_params *ps);
static void trace_msg_out(struct sip_msg* req, str *buffer,
struct socket_info* send_sock, int proto, union sockaddr_union *to,
trace_info_p info);
static void siptrace_dlg_cancel(struct cell* t, int type, struct tmcb_params *param);
/*
* callback used for statelessly forwarded requests; also catches the ACK in
* stateful transaction
*/
static void trace_slreq_out(struct sip_msg* req, str *buffer,int rpl_code,
union sockaddr_union *to, struct socket_info *sock, int proto);
static void trace_slreply_out(struct sip_msg* req, str *buffer,int rpl_code,
union sockaddr_union *dst, struct socket_info *sock, int proto);
#if 0
static void trace_slack_in(struct sip_msg* req, str *buffer,int rpl_code,
union sockaddr_union *dst, struct socket_info *sock, int proto);
#endif
static mi_response_t *sip_trace_mi(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *sip_trace_mi_tid(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *sip_trace_mi_mode(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *sip_trace_mi_2(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *sip_trace_mi_dyn(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *sip_trace_mi_stop(const mi_params_t *params,
struct mi_handler *async_hdl);
static int trace_send_duplicate(char *buf, int len, struct sip_uri *uri);
static int send_trace_proto_duplicate(trace_dest dest,
str* correlation, trace_instance_p info, int conn_id);
static int api_is_id_traced(int id);
static int is_id_traced(int id, trace_instance_p info);
static int pipport2su (str *sproto, str *ip, unsigned short port,
union sockaddr_union *tmp_su, unsigned int *proto);
static int parse_trace_id(unsigned int type, void *val);
void free_trace_info_pkg(void *param);
void free_trace_info_shm(void *param);
static void free_trace_filters(struct trace_filter *list);
static int init_dyn_tracing(void);
static void destroy_dyn_tracing(void);
static int process_dyn_tracing(struct sip_msg *msg, void *param);
/*
* Exported functions
*/
static cmd_export_t cmds[] = {
{"trace", (cmd_function)trace_w, {
{CMD_PARAM_STR, fixup_tid, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT, fixup_sflags, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT, 0, 0}, {0,0,0}},
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{0,0,{{0,0,0}},0}
};
/*
* Exported parameters
*/
static param_export_t params[] = {
{"trace_id", STR_PARAM|USE_FUNC_PARAM, parse_trace_id},
{"date_column", STR_PARAM, &date_column.s },
{"callid_column", STR_PARAM, &callid_column.s },
{"trace_attrs_column", STR_PARAM,&trace_attrs_column.s},
{"msg_column", STR_PARAM, &msg_column.s },
{"method_column", STR_PARAM, &method_column.s },
{"status_column", STR_PARAM, &status_column.s },
{"fromproto_column", STR_PARAM, &fromproto_column.s },
{"fromip_column", STR_PARAM, &fromip_column.s },
{"fromport_column", STR_PARAM, &fromport_column.s },
{"toproto_column", STR_PARAM, &toproto_column.s },
{"toip_column", STR_PARAM, &toip_column.s },
{"toport_column", STR_PARAM, &toport_column.s },
{"fromtag_column", STR_PARAM, &fromtag_column.s },
{"direction_column", STR_PARAM, &direction_column.s },
{"trace_on", INT_PARAM, &trace_on },
{"trace_local_ip", STR_PARAM, &trace_local_ip.s },
{0, 0, 0}
};
static mi_export_t mi_cmds[] = {
{ "trace", 0, MI_NAMED_PARAMS_ONLY, 0, {
{sip_trace_mi, {0}},
{sip_trace_mi_tid, {"id", 0}},
{sip_trace_mi_mode, {"mode", 0}},
{sip_trace_mi_2,{"id", "mode", 0}},
{EMPTY_MI_RECIPE}
}
},
{ "trace_start", 0, 0, 0, {
{sip_trace_mi_dyn,{"id", "uri", 0}},
{sip_trace_mi_dyn,{"id", "uri", "filter", 0}},
{sip_trace_mi_dyn,{"id", "uri", "filter", "scope", "type", 0}},
{EMPTY_MI_RECIPE}
}
},
{ "trace_stop", 0, 0, 0, {
{sip_trace_mi_stop,{"id", 0}},
{EMPTY_MI_RECIPE}
}
},
{EMPTY_MI_EXPORT}
};
#ifdef STATISTICS
#include "../../statistics.h"
stat_var* siptrace_req;
stat_var* siptrace_rpl;
static stat_export_t siptrace_stats[] = {
{"traced_requests" , 0, &siptrace_req },
{"traced_replies" , 0, &siptrace_rpl },
{0,0,0}
};
#endif
static module_dependency_t *get_deps_hep(param_export_t *param)
{
tlist_elem_p it;
for (it=trace_list;it;it=it->next)
if (it->type==TYPE_HEP)
return alloc_module_dep(MOD_TYPE_DEFAULT, "proto_hep", DEP_ABORT);
else if (it->type==TYPE_DB)
return alloc_module_dep(MOD_TYPE_SQLDB, NULL, DEP_ABORT);
return NULL;
}
static dep_export_t deps = {
{ /* OpenSIPS module dependencies */
{ MOD_TYPE_NULL, NULL, 0 },
},
{ /* modparam dependencies */
{"trace_id", get_deps_hep},
{ NULL, NULL },
},
};
/* module exports */
struct module_exports exports = {
"tracer",
MOD_TYPE_DEFAULT,/* class of this module */
MODULE_VERSION,
DEFAULT_DLFLAGS, /* dlopen flags */
0, /* load function */
&deps, /* OpenSIPS module dependencies */
cmds, /* Exported functions */
0, /* Exported async functions */
params, /* Exported parameters */
#ifdef STATISTICS
siptrace_stats,
#else
0, /* exported statistics */
#endif
mi_cmds, /* exported MI functions */
0, /* exported pseudo-variables */
0, /* exported transformations */
0, /* extra processes */
mod_init, /* module initialization function */
0, /* response function */
destroy, /* destroy function */
child_init, /* child initialization function */
0 /* reload confirm function */
};
static int
get_db_struct(str *url, str *tb_name, st_db_struct_t **st_db)
{
st_db_struct_t *dbs;
dbs = pkg_malloc(sizeof(st_db_struct_t));
if (st_db == NULL) {
LM_ERR("invalid output parameter!\n");
return -1;
}
if (url == NULL || url->s == NULL || url->len == 0) {
LM_ERR("invalid URL!\n");
return -1;
}
/* if not set populated with 'tracer_table' in parse_siptrace_id() */
dbs->table = *tb_name;
if (db_bind_mod(url, &dbs->funcs)) {
LM_ERR("unable to bind database module\n");
return -1;
}
if (!DB_CAPABILITY(dbs->funcs, DB_CAP_INSERT)) {
LM_ERR("database modules does not provide all functions needed by module\n");
return -1;
}
if ((dbs->con=dbs->funcs.init(url)) == 0) {
LM_CRIT("Cannot connect to DB\n");
return -1;
}
if (db_check_table_version(&dbs->funcs, dbs->con,
&dbs->table, TRACER_TABLE_VERSION) < 0) {
LM_ERR("error during table version check.\n");
return -1;
}
dbs->url = *url;
dbs->funcs.close(dbs->con);
dbs->con = 0;
*st_db = dbs;
return 0;
}
static inline void get_value_and_update(str* token, char delim, str* value)
{
char* end;
value->s = token->s;
if ( !(end=q_memchr(token->s, delim, token->len)) ) {
value->len = token->len;
token->len = 0;
} else {
value->len = end - token->s;
token->len = token->len - ((end + 1) - token->s);
/* might have a negative value if ';' is the last character */
if ( token->len > 0 )
token->s = end + 1;
}
str_trim_spaces_lr(*value);
}
static int
parse_siptrace_uri(str* token, str* uri, str* param1)
{
static const char key_value_delim = '=';
static const char param_delim = ';';
static const char db_delim = '\\';
static str uri_str={"uri", sizeof("uri")-1};
static str tb_name_str={"table", sizeof("table")-1};
char *end;
str key, value, aux;
/* we must be careful because there might be a mysql password containing
* our delimiters; so we first parse the key then carefully go through
* the value if it's an uri */
str_trim_spaces_lr(*token);
while ( token->len > 0 ) {
if ( !(end=q_memchr(token->s, key_value_delim, token->len)) ) {
LM_ERR("key delimiter '=' not found in <%.*s>\n", token->len, token->s);
return -1;
}
key.s = token->s;
key.len = end - token->s;
str_trim_spaces_lr(key);
token->len -= ((end + 1) - token->s);
token->s = end + 1;
if ( !strncmp(key.s, uri_str.s, uri_str.len) ) {
if ( !(end=q_memrchr( token->s, db_delim, token->len)) ) {
/* no '/' so it's not a db url; just do a normal parse */
get_value_and_update( token, param_delim, &value);
} else {
aux.s = end;
aux.len = token->len - (end - token->s);
value.s = token->s;
/* now search the actual delimiter */
if ( !(end=q_memchr( aux.s, param_delim, aux.len)) ) {
value.len = token->len;
token->len = 0;
} else {
value.len = end - token->s;
token->len = token->len - ((end+1) - token->s);
if ( token->len > 0 )
token->s = end + 1;
}
}
*uri = value;
} else if ( !strncmp(key.s, tb_name_str.s, tb_name_str.len) ) {
get_value_and_update( token, param_delim, &value);
*param1 = value;
} else {
LM_ERR("Invalid key <%.*s> in trace id!\n", key.len, key.s);
return -1;
}
}
return 0;
}
static void get_siptrace_type(str *name, str *trace_uri, str *param1,
unsigned int *hash, enum types *type)
{
#define IS_HEP_URI(__url__) ((__url__->len > 3/*O_o*/ \
&& (__url__->s[0]|0x20) == 'h' && (__url__->s[1]|0x20) == 'e' \
&& (__url__->s[2]|0x20) == 'p'))
#define IS_SIP_URI(__url__) ((__url__->len > 3/*O_o*/ \
&& (__url__->s[0]|0x20) == 's' && (__url__->s[1]|0x20) == 'i' \
&& (__url__->s[2]|0x20) == 'p'))
#define IS_UDP(__url__) ((__url__.len == 3/*O_o*/ \
&& (__url__.s[0]|0x20) == 'u' && (__url__.s[1]|0x20) == 'd' \
&& (__url__.s[2]|0x20) == 'p'))
#define IS_TCP(__url__) ((__url__.len == 3/*O_o*/ \
&& (__url__.s[0]|0x20) == 't' && (__url__.s[1]|0x20) == 'c' \
&& (__url__.s[2]|0x20) == 'p'))
unsigned int param_hash;
*hash = core_hash(name, trace_uri, 0);
if (IS_HEP_URI(trace_uri)) {
/* jump over 'hep:' prefix and keep the name; will be loaded in mod init */
*type = TYPE_HEP;
trace_uri->len -= HEP_PREFIX_LEN;
trace_uri->s += HEP_PREFIX_LEN;
} else if (IS_SIP_URI(trace_uri)) {
*type = TYPE_SIP;
} else {
/* need to take the table into account */
if (param1 && (param1->s == NULL || param1->len == 0))
param1 = &siptrace_table;
param_hash = core_hash(trace_uri, param1, 0);
*hash ^= (param_hash>>3);
*type = TYPE_DB;
}
#undef IS_HEP_URI
#undef IS_SIP_URI
#undef IS_TCP
#undef IS_UDP
}
static inline tlist_elem_p get_siptrace_id(str *name, unsigned int hash, enum types type)
{
tlist_elem_p el;
for (el = trace_list; el; el = el->next)
if (el->type == type && el->uri_hash == hash)
return el;
return NULL;
}
static inline tlist_elem_p get_dyn_siptrace_id(str *name, unsigned int hash, enum types type,
int leave_locked)
{
tlist_elem_p el;
lock_get(dyn_trace_lock);
for (el = *dyn_trace_list; el; el = el->next)
if (el->type == type && el->uri_hash == hash)
break;
if (!leave_locked)
lock_release(dyn_trace_lock);
return el;
}
static int parse_siptrace_id(str *suri)
{
#define PARSE_NAME(__uri, __name) \
do { \
while (__uri->s[0]==' ') \
(__uri->s++, __uri->len--); \
__name.s = __uri->s; \
while (__uri->len \
&& (__uri->s[0] != ']' && __uri->s[0] != ' ')) \
(__uri->s++, __uri->len--, __name.len++); \
\
if (*(__uri->s-1) != ']') \
while (__uri->len && __uri->s[0] != ']') \
(__uri->s++, __uri->len--); \
\
if (!__uri->len || __uri->s[0] != ']') { \
LM_ERR("bad name [%.*s]!\n", __uri->len, __uri->s); \
return -1; \
} \
(__uri->s++, __uri->len--); \
} while(0);
unsigned int hash;
str name={NULL, 0};
str trace_uri;
str param1={NULL, 0};
tlist_elem_p elem;
enum types uri_type;
if (suri == NULL) {
LM_ERR("bad input parameters!\n");
return -1;
}
/*format: [<proto>]uri; it should never have
* less than 5 */
if (suri->len < 5) {
LM_ERR("suri too short!\n");
return -1;
}
/* we consider the str trimmed before the function */
if (suri->s[0] != '[') {
LM_ERR("bad format for uri {%.*s}\n", suri->len, suri->s);
return -1;
} else {
suri->s++;
suri->len--;
}
PARSE_NAME(suri, name); /*parse '[<name>]'*/
if (parse_siptrace_uri(suri, &trace_uri, ¶m1) < 0) {
LM_ERR("invalid uri <%.*s>\n", suri->len, suri->s);
return -1;
}
get_siptrace_type(&name, &trace_uri, ¶m1, &hash, &uri_type);
if (get_siptrace_id(&name, hash, uri_type))
return 0;
LM_DBG("allocating %d [%.*s]\n", hash, name.len, name.s);
elem = pkg_malloc(sizeof(tlist_elem_t));
if (!elem) {
LM_ERR("could not allocate elem for %.*s!\n", name.len, name.s);
return -1;
}
memset(elem, 0, sizeof(tlist_elem_t));
elem->type = uri_type;
elem->hash = core_hash(&name, NULL, 0);
elem->uri_hash = hash;
elem->name = name;
if (uri_type == TYPE_DB) {
if (get_db_struct(&trace_uri, ¶m1, &elem->el.db) < 0) {
LM_ERR("Invalid parameters extracted!url <%.*s>! table name <%.*s>!\n",
trace_uri.len, trace_uri.s, param1.len, param1.s);
return -1;
}
} else if (uri_type == TYPE_SIP) {
if (parse_uri(trace_uri.s, trace_uri.len, &elem->el.uri) < 0) {
LM_ERR("failed to parse the URI!\n");
return -1;
}
} else {
elem->el.hep.name = trace_uri;
}
add_last(elem, trace_list);
return 0;
#undef PARSE_NAME
}
int parse_trace_id(unsigned int type, void *val)
{
str suri;
suri.s = (char*)val;
suri.len = strlen(suri.s);
str_trim_spaces_lr(suri);
if (parse_siptrace_id(&suri) < 0) {
LM_ERR("failed to parse tracer uri [%.*s]\n", suri.len, suri.s);
return -1;
}
return 0;
}
static int parse_trace_local_ip(void){
/* We tokenize the trace_local_ip from proto:ip:port to three fields */
trace_local_ip.len = strlen(trace_local_ip.s);
unsigned int port_no;
char *c = strchr(trace_local_ip.s, ':');
if (c == NULL) {
/* Only ip is specified */
trace_local_port = SIP_PORT;
trace_local_proto.s = "udp";
trace_local_proto.len = sizeof("udp") -1;
}
else {
str first_token = {c + 1,
trace_local_ip.len - (c - trace_local_ip.s) - 1};
if (str2int(&first_token, &port_no) == 0){
/* The first token is the port, so no proto */
if (port_no > 65535 || port_no == 0){
LM_WARN("trace local_ip: port is out of range (%d). "
"Will consider it to be %d\n", port_no, SIP_PORT);
trace_local_port = SIP_PORT;
}
else
trace_local_port = (unsigned short) port_no;
trace_local_proto.s = "udp";
trace_local_proto.len = sizeof("udp") - 1;
trace_local_ip.len = c - trace_local_ip.s;
}
else {
/* The first token is the protocol */
trace_local_proto.s = trace_local_ip.s;
trace_local_proto.len = c - trace_local_ip.s;
if (trace_local_proto.len > 4){
/* Too many letters for the protocol. Avoiding overflow */
LM_ERR("trace_local_ip : wrong protocol\n");
return -1;
} else if (trace_local_proto.len == 0){
trace_local_proto.s = "udp";
trace_local_proto.len = sizeof("udp") - 1;
}
char *c2 = strchr(c + 1, ':');
if (c2 != NULL){
/* We have a second token */
str second_token;
second_token.s = c2 + 1;
second_token.len = trace_local_ip.len -
(c2 - trace_local_ip.s) - 1;
if (str2int(&second_token, &port_no) != 0) {
trace_local_port = SIP_PORT;
LM_WARN("trace_local_ip: port is wrongly defined. "
"Will consider it as %hd\n", trace_local_port);
}
else if (port_no > 65535 || port_no == 0){
LM_WARN("trace local_ip: port is out of range (%d). "
"Will consider it to be %d\n",
port_no, SIP_PORT);
trace_local_port = SIP_PORT;
}
else
trace_local_port = (unsigned short) port_no;
trace_local_ip.s = c + 1;
trace_local_ip.len = c2 - c - 1;
}
else {
trace_local_port = SIP_PORT;
trace_local_ip.len -= c - trace_local_ip.s + 1;
trace_local_ip.s = c + 1;
}
}
}
return 0;
}
/*
* no fancy stuff just bubble sort; the list will be quite small
*/
static void do_sort(tlist_elem_p *list_p)
{
int done=1;
tlist_elem_p it, prev, tmp;
/* 0 or 1 elems already sorted */
if (*list_p==NULL || (*list_p)->next==NULL)
return;
do {
done=1;
prev=NULL;
it=*list_p;
do {
if (it->hash > it->next->hash) {
/* need to modify start of the list */
if (!prev) {
tmp=it->next;
it->next=tmp->next;
tmp->next=it;
*list_p=tmp;
} else {
tmp=it->next;
prev->next=tmp;
it->next=tmp->next;
tmp->next=it;
}
done=0;
}
prev=it;
it=it->next;
} while (it && it->next);
} while (!done);
}
static void init_db_cols(void)
{
#define COL_INIT(_col, _index, _type) \
do { \
db_keys[_index] = &_col##_column; \
db_vals[_index].type = DB_##_type; \
db_vals[_index].nul = 0; \
} while(0);
COL_INIT(msg, 0, STR);
COL_INIT(callid, 1, STR);
COL_INIT(method, 2, STR);
COL_INIT(status, 3, STR);
COL_INIT(fromproto, 4, STR);
COL_INIT(fromip, 5, STR);
COL_INIT(fromport, 6, INT);
COL_INIT(toproto, 7, STR);
COL_INIT(toip, 8, STR);
COL_INIT(toport, 9, INT);
COL_INIT(date, 10, DATETIME);
COL_INIT(direction, 11, STRING);
COL_INIT(fromtag, 12, STR);
COL_INIT(trace_attrs, 13, STR);
}
static int mod_init(void)
{
tlist_elem_p it;
date_column.len = strlen(date_column.s);
callid_column.len = strlen(callid_column.s);
trace_attrs_column.len = strlen(trace_attrs_column.s);
msg_column.len = strlen(msg_column.s);
method_column.len = strlen(method_column.s);
status_column.len = strlen(status_column.s);
fromproto_column.len = strlen(fromproto_column.s);
fromip_column.len = strlen(fromip_column.s);
fromport_column.len = strlen(fromport_column.s);
toproto_column.len = strlen(toproto_column.s);
toip_column.len = strlen(toip_column.s);
toport_column.len = strlen(toport_column.s);
fromtag_column.len = strlen(fromtag_column.s);
direction_column.len = strlen(direction_column.s);
if (trace_local_ip.s)
parse_trace_local_ip();
LM_INFO("initializing...\n");
trace_on_flag = (int*)shm_malloc(sizeof(int));
if(trace_on_flag==NULL)
{
LM_ERR("no more shm memory left\n");
return -1;
}
if (init_dyn_tracing() < 0) {
LM_ERR("could not initiate dynamic tracing!\n");
return -1;
}
*trace_on_flag = trace_on;
/* best effort - try to load any tracing protocol, if possible */
trace_prot_bind(TRACE_PROTO, &tprot);
/* initialize hep api */
for (it=trace_list;it;it=it->next) {
if (it->type!=TYPE_HEP)
continue;
if (tprot.get_trace_dest_by_name == NULL) {
LM_ERR("NO tracing protocol specified!\n");
return -1;
}
it->el.hep.hep_id = tprot.get_trace_dest_by_name(&it->el.hep.name);
if (it->el.hep.hep_id == NULL) {
LM_ERR("hep id not found!\n");
return -1;
}
LM_DBG("hep id {%.*s} loaded successfully!\n",
it->el.hep.name.len, it->el.hep.name.s);
}
/* set db_keys/vals info */
init_db_cols();
/* this will allow using HEP, SIP and DB that
* are declared under the same name in the same
* sip_trace() call */
for (it=trace_list; it; it=it->next) {
it->traceable=shm_malloc(sizeof(unsigned char));
if (it->traceable==NULL) {
LM_ERR("no more shmem!\n");
return -1;
}
*it->traceable = trace_on;
}
/* sort the list */
do_sort(&trace_list);
if (trace_list==NULL) {
LM_WARN("No trace id defined! The module is useless!\n");
}
/* this makes sense only if trace protocol is loaded */
if ( tprot.send_message ) {
sip_trace_id=register_traced_type(SIP_TRACE_TYPE_STR);
if (sip_trace_id == -1) {
LM_ERR("failed to get an id for \"%s\" tracing!\n", SIP_TRACE_TYPE_STR);
return -1;
}
if (register_trace_type == NULL)
register_trace_type = ®ister_traced_type;
if (check_is_traced == NULL)
check_is_traced = &api_is_id_traced;
if (get_next_destination == NULL)
get_next_destination = get_next_trace_dest;
if (sip_context_trace == NULL)
sip_context_trace = sip_context_trace_impl;
/* set the global trace api for other modules/functions if loaded */
if (tprot.get_trace_dest_by_name && !global_trace_api)
global_trace_api = &tprot;
}
/* load the module dependencies, best effort for now, as the strict
* dependency will be checked later in fixup function, according to
* the sip_trace() flags */
load_dlg_api(&dlgb);
load_tm_api(&tmb);
/* statelessly forwarded request callbacks */
if (register_slcb(SLCB_REQUEST_OUT, FL_USE_SIPTRACE,
trace_slreq_out) != 0) {
LM_ERR("can't register callback for statelessly "
"forwarded request\n");
return -1;
}
if (register_slcb(SLCB_REPLY_OUT, FL_USE_SIPTRACE,
trace_slreply_out) != 0) {
LM_ERR("can't register callback for statelessly "
"forwarded request\n");
return -1;
}
/* FIXME find a way to pass the flags and the trace_info_p
* parameter if there's any*/
#if 0
if (register_slcb(SLCB_ACK_IN, 0, trace_slack_in) != 0) {
LM_ERR("can't register callback for statelessly "
"forwarded request\n");
return -1;
}
#endif
/* register the context index for the tracing context
* set a free function only if no TM, otherwise
* tm/dialog will free the structure */
sl_ctx_idx=context_register_ptr(CONTEXT_GLOBAL,
(tmb.t_gett==NULL)?free_trace_info_pkg:0);
if (register_script_cb(process_dyn_tracing, PRE_SCRIPT_CB|REQ_TYPE_CB, 0)!=0) {
LM_ERR("could not register request dynamic tracing callback\n");
return -1;
}
return 0;
}
static int child_init(int rank)
{
tlist_elem_p it;
for (it=trace_list; it; it=it->next) {
if (it->type == TYPE_DB) {
LM_DBG("Initializing trace id [%.*s]\n",
it->name.len, it->name.s);
it->el.db->con = it->el.db->funcs.init(&it->el.db->url);
if (!it->el.db->con) {
LM_ERR("Unable to connect to database with url [%.*s]\n",
it->el.db->url.len, it->el.db->url.s);
return -1;
}
}
}
return 0;
}
static void destroy(void)
{
tlist_elem_p el, last=NULL;
el=trace_list;
while (el) {
if (last) {
shm_free(last->traceable);
pkg_free(last);
}
if (el->type == TYPE_DB) {
if (el->el.db->con) {
el->el.db->funcs.close(el->el.db->con);
}
}
last=el;
el=el->next;
}
if (last)
if (trace_on_flag)
shm_free(trace_on_flag);
destroy_dyn_tracing();
}