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+/**
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+ * Copyright (C) 2015 Daniel-Constantin Mierla (asipto.com)
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+ *
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+ * This file is part of Kamailio, a free SIP server.
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+ *
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+ * This file is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version
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+ *
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+ *
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+ * This file 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 General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+ *
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+ */
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+
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+#include <stdio.h>
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+#include <unistd.h>
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+#include <stdlib.h>
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+#include <string.h>
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+#include <stdarg.h>
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+
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+#include "../../sr_module.h"
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+#include "../../dprint.h"
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+#include "../../mod_fix.h"
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+#include "../../forward.h"
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+#include "../../resolve.h"
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+#include "../../udp_server.h"
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+
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+MODULE_VERSION
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+
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+static int _lc_log_udp = 0;
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+static struct dest_info _lc_udp_dst = {0};
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+
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+static int mod_init(void);
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+static int child_init(int);
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+static void mod_destroy(void);
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+
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+static int w_log_udp(struct sip_msg* msg, char* txt, char* p2);
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+
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+void _lc_core_log_udp(int lpriority, const char *format, ...);
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+
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+static cmd_export_t cmds[]={
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+ {"log_udp", (cmd_function)w_log_udp, 1, fixup_spve_null,
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+ 0, ANY_ROUTE},
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+ {0, 0, 0, 0, 0, 0}
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+};
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+
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+static param_export_t params[]={
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+ {0, 0, 0}
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+};
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+
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+struct module_exports exports = {
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+ "log_custom",
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+ DEFAULT_DLFLAGS, /* dlopen flags */
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+ cmds,
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+ params,
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+ 0,
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+ 0, /* exported MI functions */
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+ 0, /* exported pseudo-variables */
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+ 0, /* extra processes */
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+ mod_init, /* module initialization function */
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+ 0, /* response function */
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+ mod_destroy, /* destroy function */
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+ child_init /* per child init function */
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+};
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+
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+
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+int mod_register(char *path, int *dlflags, void *p1, void *p2)
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+{
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+ str dest = {0};
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+ int ret = 0;
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+ struct sip_uri next_hop, *u;
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+ char *p;
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+
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+ if(_km_log_engine_type==0 || _km_log_engine_data==0)
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+ return 0;
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+
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+
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+ if(strcasecmp(_km_log_engine_type, "udp")!=0)
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+ return 0;
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+
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+ dest.s = _km_log_engine_data;
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+ dest.len = strlen(dest.s);
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+
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+ init_dest_info(&_lc_udp_dst);
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+
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+ u = &next_hop;
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+ u->port_no = 5060;
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+ u->host = dest;
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+ p = dest.s;
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+ /* detect ipv6 */
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+ p = memchr(p, ']', dest.len);
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+ if (p) p++;
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+ else p = dest.s;
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+ p = memchr(p, ':', dest.len - (p - dest.s));
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+ if (p) {
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+ u->host.len = p - dest.s;
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+ p++;
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+ u->port_no = str2s(p, dest.len - (p - dest.s), NULL);
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+ }
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+
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+ ret = sip_hostport2su(&_lc_udp_dst.to, &u->host, u->port_no,
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+ &_lc_udp_dst.proto);
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+ if(ret!=0) {
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+ LM_ERR("failed to resolve [%.*s]\n", u->host.len,
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+ ZSW(u->host.s));
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+ return -1;;
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+ }
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+
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+ return 0;
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+}
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+
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+/**
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+ * init module function
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+ */
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+static int mod_init(void)
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+{
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+ return 0;
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+}
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+
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+/**
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+ * @brief Initialize async module children
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+ */
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+static int child_init(int rank)
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+{
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+ if(rank!=PROC_INIT)
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+ return 0;
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+
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+ _lc_udp_dst.proto = PROTO_UDP;
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+ _lc_udp_dst.send_sock=get_send_socket(NULL, &_lc_udp_dst.to, PROTO_UDP);
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+ if (_lc_udp_dst.send_sock==0) {
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+ _lc_udp_dst.send_sock = get_out_socket(&_lc_udp_dst.to, PROTO_UDP);
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+ if (_lc_udp_dst.send_sock==0) {
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+ LM_ERR("failed to get send socket\n");
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+ return -1;
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+ }
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+ }
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+ km_log_func_set(&_lc_core_log_udp);
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+ _lc_log_udp = 1;
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+
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+
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+
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+ return 0;
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+}
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+/**
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+ * destroy module function
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+ */
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+static void mod_destroy(void)
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+{
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+}
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+
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+/**
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+ *
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+ */
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+static int w_log_udp(struct sip_msg* msg, char* txt, char* p2)
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+{
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+ str stxt;
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+ int ret;
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+
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+ if(_lc_log_udp==0)
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+ return 1;
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+
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+ if(fixup_get_svalue(msg, (gparam_t*)txt, &stxt)!=0) {
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+ LM_ERR("unable to get text parameter\n");
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+ return -1;
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+ }
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+
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+ ret=udp_send(&_lc_udp_dst, stxt.s, stxt.len);
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+
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+ if(ret==0) return 1;
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+
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+ return ret;
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+}
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+
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+#define LC_LOG_MSG_MAX_SIZE 16384
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+void _lc_core_log_udp(int lpriority, const char *format, ...)
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+{
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+ va_list arglist;
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+ char obuf[LC_LOG_MSG_MAX_SIZE];
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+ int n;
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+
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+ va_start(arglist, format);
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+
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+ n = 0;
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+ n += snprintf(obuf+n, 1024-n, "(%d) ", my_pid());
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+ n += vsnprintf(obuf+n, 1024-n, format, arglist);
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+ va_end(arglist);
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+ udp_send(&_lc_udp_dst, obuf, n);
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+}
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Daniel-Constantin Mierla