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sigar/bindings/ruby/rbsigar.c

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/*
* Copyright (C) [2004, 2005, 2006], Hyperic, Inc.
* This file is part of SIGAR.
*
* SIGAR is free software; you can redistribute it and/or modify
* it under the terms version 2 of the GNU General Public License as
* published by the Free Software Foundation. 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
#include <ruby.h>
#ifdef RB_RUBY_19
#include <ruby/re.h>
#else
#include <re.h>
#endif
#include <errno.h>
#include "sigar.h"
#include "sigar_fileinfo.h"
#include "sigar_log.h"
#include "sigar_format.h"
#include "sigar_ptql.h"
#include "sigar_private.h"
#include "sigar_util.h"
#define RB_SIGAR_RAISE(msg) rb_raise(rb_eArgError, "%s", msg)
#define RB_SIGAR_CROAK RB_SIGAR_RAISE(sigar_strerror(sigar, status))
#define OBJ2PID(pid) rb_sigar_pid_get(rbsigar, pid)
#ifndef RSTRING_PTR
#define RSTRING_PTR(s) RSTRING(s)->ptr
#endif
#ifndef RSTRING_LEN
#define RSTRING_LEN(s) RSTRING(s)->len
#endif
#ifdef RB_HAS_RE_ERROR
# define RB_REGEX_ERROR rb_eRegexpError
#else
# define RB_REGEX_ERROR rb_eArgError
#endif
#define SIGAR \
sigar_t *sigar = rbsigar->sigar;
#define SIGAR_GET \
rb_sigar_t *rbsigar = rb_sigar_get(obj); \
SIGAR;
typedef struct {
sigar_t *sigar;
VALUE logger;
} rb_sigar_t;
static rb_sigar_t *rb_sigar_get(VALUE obj)
{
rb_sigar_t *rbsigar;
Data_Get_Struct(obj, rb_sigar_t, rbsigar);
return rbsigar;
}
static int rbsigar_ptql_re_impl(void *data,
char *haystack, char *needle)
{
#ifdef RB_RUBY_19
/* XXX no more regex.h */
return 0;
#else
struct re_pattern_buffer *regex;
int len = strlen(haystack);
int retval;
const char *err;
regex = ALLOC(struct re_pattern_buffer);
MEMZERO((char *)regex, struct re_pattern_buffer, 1);
/* XXX cache */
if ((err = re_compile_pattern(needle, strlen(needle), regex))) {
re_free_pattern(regex);
rb_raise(RB_REGEX_ERROR, "%s", err);
return 0;
}
retval = re_match(regex, haystack, len, 0, NULL);
re_free_pattern(regex);
return retval > 0;
#endif
}
#define sigar_isdigit(c) \
(isdigit(((unsigned char)(c))))
static sigar_pid_t rb_sigar_pid_get(rb_sigar_t *rbsigar, VALUE obj)
{
SIGAR;
if (TYPE(obj) == T_STRING) {
char *pid = StringValuePtr(obj);
if (sigar_isdigit(*pid)) {
obj = rb_str2inum(obj, 10);
/* fallthru */
}
else if ((RSTRING_LEN(obj) == 2) &&
(*pid == '$') && (*(pid + 1) == '$'))
{
return sigar_pid_get(sigar);
}
else {
/* XXX cache queries */
sigar_ptql_query_t *query;
sigar_ptql_error_t error;
int status =
sigar_ptql_query_create(&query, (char *)pid, &error);
if (status == SIGAR_OK) {
sigar_pid_t qpid;
sigar_ptql_re_impl_set(sigar, NULL, rbsigar_ptql_re_impl);
status = sigar_ptql_query_find_process(sigar, query, &qpid);
sigar_ptql_re_impl_set(sigar, NULL, NULL);
sigar_ptql_query_destroy(query);
if (status == SIGAR_OK) {
return qpid;
}
else {
RB_SIGAR_RAISE(sigar_strerror(sigar, status));
}
}
else {
RB_SIGAR_RAISE(error.message);
}
}
}
return NUM2UINT(obj);
}
static void rb_sigar_free(void *obj)
{
xfree(obj);
}
static void rb_sigar_close(rb_sigar_t *rbsigar)
{
sigar_close(rbsigar->sigar);
rb_sigar_free(rbsigar);
}
static void rb_sigar_mark(rb_sigar_t *rbsigar)
{
rb_gc_mark(rbsigar->logger);
}
static VALUE rb_sigar_new(VALUE module)
{
rb_sigar_t *rbsigar;
rbsigar = ALLOC(rb_sigar_t);
sigar_open(&(rbsigar->sigar));
return Data_Wrap_Struct(module, rb_sigar_mark, rb_sigar_close, rbsigar);
}
static VALUE rb_sigar_format_size(VALUE rclass, VALUE size)
{
char buffer[56];
return rb_str_new2(sigar_format_size(NUM2LL(size), buffer));
}
static VALUE rb_sigar_net_interface_flags_to_s(VALUE rclass, VALUE flags)
{
char buffer[1024];
return rb_str_new2(sigar_net_interface_flags_to_string(NUM2LL(flags), buffer));
}
static VALUE rb_sigar_net_connection_type_to_s(VALUE rclass, VALUE type)
{
return rb_str_new2(sigar_net_connection_type_get(NUM2INT(type)));
}
static VALUE rb_sigar_net_connection_state_to_s(VALUE rclass, VALUE state)
{
return rb_str_new2(sigar_net_connection_state_get(NUM2INT(state)));
}
static VALUE rb_sigar_net_address_to_string(sigar_net_address_t *address)
{
char addr_str[SIGAR_INET6_ADDRSTRLEN];
sigar_net_address_to_string(NULL, address, addr_str);
return rb_str_new2(addr_str);
}
#define rb_sigar_net_address_to_s(a) rb_sigar_net_address_to_string(&a)
static VALUE rb_sigar_new_list(char *data, unsigned long number,
int size, VALUE rclass)
{
unsigned long i;
VALUE av = rb_ary_new2(number);
for (i=0; i<number; i++, data += size) {
void *ent = malloc(size);
memcpy(ent, data, size);
rb_ary_push(av, Data_Wrap_Struct(rclass, 0, free, ent));
}
return av;
}
static VALUE rb_sigar_new_strlist(char **data, unsigned long number)
{
unsigned long i;
VALUE av = rb_ary_new2(number);
for (i=0; i<number; i++) {
rb_ary_push(av, rb_str_new2(data[i]));
}
return av;
}
static VALUE rb_sigar_new_intlist(int *data, int number)
{
int i;
VALUE av = rb_ary_new2(number);
for (i=0; i<number; i++) {
rb_ary_push(av, rb_int2inum(data[i]));
}
return av;
}
static VALUE rb_sigar_net_interface_list(VALUE obj)
{
SIGAR_GET;
int status;
sigar_net_interface_list_t iflist;
VALUE RETVAL;
status = sigar_net_interface_list_get(sigar, &iflist);
if (status != SIGAR_OK) {
RB_SIGAR_CROAK;
}
RETVAL = rb_sigar_new_strlist(iflist.data, iflist.number);
sigar_net_interface_list_destroy(sigar, &iflist);
return RETVAL;
}
static int rb_sigar_str2net_address(VALUE bytes, sigar_net_address_t *address)
{
long len = RSTRING_LEN(bytes);
switch (len) {
case 4:
address->family = SIGAR_AF_INET;
break;
case 4*4:
address->family = SIGAR_AF_INET6;
break;
default:
return EINVAL;
}
memcpy(RSTRING_PTR(bytes), &address->addr.in6, len);
return SIGAR_OK;
}
static VALUE rb_cSigarNetStat;
static VALUE rb_sigar_net_stat_get(VALUE obj, VALUE flags, VALUE bytes, int port)
{
SIGAR_GET;
int status;
int has_port = (port != -1);
sigar_net_stat_t *RETVAL = malloc(sizeof(*RETVAL));
sigar_net_address_t address;
if (has_port) {
status = rb_sigar_str2net_address(bytes, &address);
if (status == SIGAR_OK) {
status = sigar_net_stat_port_get(sigar, RETVAL, NUM2INT(flags),
&address, port);
}
}
else {
status = sigar_net_stat_get(sigar, RETVAL, NUM2INT(flags));
}
if (status != SIGAR_OK) {
free(RETVAL);
RB_SIGAR_CROAK;
}
return Data_Wrap_Struct(rb_cSigarNetStat, 0, rb_sigar_free, RETVAL);
}
static VALUE rb_sigar_net_stat(VALUE obj, VALUE flags)
{
return rb_sigar_net_stat_get(obj, flags, Qnil, -1);
}
static VALUE rb_sigar_net_stat_port(VALUE obj, VALUE flags, VALUE address, VALUE port)
{
return rb_sigar_net_stat_get(obj, flags, address, NUM2INT(port));
}
static VALUE rb_sigar_NetStat_tcp_states(VALUE self)
{
sigar_net_stat_t *net_stat;
Data_Get_Struct(self, sigar_net_stat_t, net_stat);
return rb_sigar_new_intlist(&net_stat->tcp_states[0], SIGAR_TCP_UNKNOWN);
}
static VALUE rb_cSigarNetConnection;
static VALUE rb_sigar_net_connection_list(VALUE obj, VALUE flags)
{
SIGAR_GET;
int status;
sigar_net_connection_list_t connlist;
VALUE RETVAL;
status = sigar_net_connection_list_get(sigar, &connlist, NUM2UINT(flags));
if (status != SIGAR_OK) {
RB_SIGAR_CROAK;
}
RETVAL = rb_sigar_new_list((char *)&connlist.data[0],
connlist.number,
sizeof(*connlist.data),
rb_cSigarNetConnection);
sigar_net_connection_list_destroy(sigar, &connlist);
return RETVAL;
}
static VALUE rb_sigar_net_services_name(VALUE obj, VALUE protocol, VALUE port)
{
SIGAR_GET;
char *name;
if ((name = sigar_net_services_name_get(sigar, NUM2UINT(protocol), NUM2UINT(port)))) {
return rb_str_new2(name);
}
else {
return Qnil;
}
}
static VALUE rb_cSigarCpuInfo;
static VALUE rb_sigar_cpu_info_list(VALUE obj)
{
SIGAR_GET;
int status;
sigar_cpu_info_list_t cpu_infos;
VALUE RETVAL;
status = sigar_cpu_info_list_get(sigar, &cpu_infos);
if (status != SIGAR_OK) {
RB_SIGAR_CROAK;
}
RETVAL = rb_sigar_new_list((char *)&cpu_infos.data[0],
cpu_infos.number,
sizeof(*cpu_infos.data),
rb_cSigarCpuInfo);
sigar_cpu_info_list_destroy(sigar, &cpu_infos);
return RETVAL;
}
static VALUE rb_cSigarCpuPerc;
static VALUE rb_cSigarFileSystem;
static VALUE rb_sigar_file_system_list(VALUE obj)
{
SIGAR_GET;
int status;
sigar_file_system_list_t fslist;
VALUE RETVAL;
status = sigar_file_system_list_get(sigar, &fslist);
if (status != SIGAR_OK) {
RB_SIGAR_CROAK;
}
RETVAL = rb_sigar_new_list((char *)&fslist.data[0],
fslist.number,
sizeof(*fslist.data),
rb_cSigarFileSystem);
sigar_file_system_list_destroy(sigar, &fslist);
return RETVAL;
}
static VALUE rb_cSigarWho;
static VALUE rb_sigar_who_list(VALUE obj)
{
SIGAR_GET;
int status;
sigar_who_list_t list;
VALUE RETVAL;
status = sigar_who_list_get(sigar, &list);
if (status != SIGAR_OK) {
RB_SIGAR_CROAK;
}
RETVAL = rb_sigar_new_list((char *)&list.data[0],
list.number,
sizeof(*list.data),
rb_cSigarWho);
sigar_who_list_destroy(sigar, &list);
return RETVAL;
}
static VALUE rb_cSigarNetRoute;
static VALUE rb_sigar_net_route_list(VALUE obj)
{
SIGAR_GET;
int status;
sigar_net_route_list_t list;
VALUE RETVAL;
status = sigar_net_route_list_get(sigar, &list);
if (status != SIGAR_OK) {
RB_SIGAR_CROAK;
}
RETVAL = rb_sigar_new_list((char *)&list.data[0],
list.number,
sizeof(*list.data),
rb_cSigarNetRoute);
sigar_net_route_list_destroy(sigar, &list);
return RETVAL;
}
static VALUE rb_sigar_proc_list(int argc, VALUE *argv, VALUE obj)
{
SIGAR_GET;
int status;
sigar_proc_list_t list;
VALUE RETVAL;
VALUE vptql;
rb_scan_args(argc, argv, "01", &vptql);
if (NIL_P(vptql)) {
status = sigar_proc_list_get(sigar, &list);
if (status != SIGAR_OK) {
RB_SIGAR_CROAK;
}
}
else {
sigar_ptql_query_t *query;
sigar_ptql_error_t error;
char *ptql = StringValuePtr(vptql);
status = sigar_ptql_query_create(&query, ptql, &error);
if (status != SIGAR_OK) {
RB_SIGAR_RAISE(error.message);
}
sigar_ptql_re_impl_set(sigar, NULL, rbsigar_ptql_re_impl);
status = sigar_ptql_query_find(sigar, query, &list);
sigar_ptql_re_impl_set(sigar, NULL, NULL);
sigar_ptql_query_destroy(query);
if (status != SIGAR_OK) {
RB_SIGAR_RAISE(sigar_strerror(sigar, status));
}
}
RETVAL = rb_sigar_new_intlist(&list.data[0],
list.number);
sigar_proc_list_destroy(sigar, &list);
return RETVAL;
}
static VALUE rb_sigar_proc_args(VALUE obj, VALUE pid)
{
SIGAR_GET;
int status;
sigar_proc_args_t args;
VALUE RETVAL;
status = sigar_proc_args_get(sigar, OBJ2PID(pid), &args);
if (status != SIGAR_OK) {
RB_SIGAR_CROAK;
}
RETVAL = rb_sigar_new_strlist(args.data, args.number);
sigar_proc_args_destroy(sigar, &args);
return RETVAL;
}
static int rb_sigar_env_getall(void *data,
const char *key, int klen,
char *val, int vlen)
{
rb_hash_aset(*((VALUE*)data),
rb_str_new(key, klen),
rb_str_new(val, vlen));
return SIGAR_OK;
}
static VALUE rb_sigar_proc_env(VALUE obj, VALUE pid)
{
SIGAR_GET;
int status;
sigar_proc_env_t procenv;
VALUE RETVAL = rb_hash_new();
procenv.type = SIGAR_PROC_ENV_ALL;
procenv.env_getter = rb_sigar_env_getall;
procenv.data = &RETVAL;
status = sigar_proc_env_get(sigar, OBJ2PID(pid), &procenv);
if (status != SIGAR_OK) {
RB_SIGAR_CROAK;
}
return RETVAL;
}
VALUE rb = Qnil;
static const char *logger_consts[] = {
"FATAL", /* SIGAR_LOG_FATAL */
"ERROR", /* SIGAR_LOG_ERROR */
"WARN", /* SIGAR_LOG_WARN */
"INFO", /* SIGAR_LOG_INFO */
"DEBUG", /* SIGAR_LOG_DEBUG */
"DEBUG", /* SIGAR_LOG_TRACE */
};
static void rb_sigar_logger_impl(sigar_t *sigar, void *data,
int level, char *message)
{
rb_sigar_t *rbsigar = ((rb_sigar_t*)data);
VALUE logger = rbsigar->logger;
/* XXX: cost of this, better way? */
VALUE logger_const = rb_const_get(rb_cObject, rb_intern("Logger"));
VALUE logger_level = rb_const_get(logger_const,
rb_intern(logger_consts[level]));
VALUE msg = rb_str_new2(message);
rb_funcall(logger, rb_intern ("add"), 2, logger_level, msg);
return;
}
static void rb_sigar_proc_impl(sigar_t *sigar, void *data,
int level, char *message)
{
rb_sigar_t *rbsigar = ((rb_sigar_t*)data);
VALUE logger = rbsigar->logger;
rb_funcall(logger, rb_intern("call"), 2, INT2FIX(level), rb_str_new2(message));
return;
}
static VALUE rb_sigar_logger(VALUE obj)
{
rb_sigar_t *rbsigar = rb_sigar_get(obj);
return rbsigar->logger;
}
static VALUE rb_sigar_set_logger(VALUE obj, VALUE logger)
{
SIGAR_GET;
if (rb_obj_is_kind_of(logger, rb_cProc) ||
rb_respond_to(logger, rb_intern("call"))) {
sigar_log_impl_set(sigar, rbsigar, rb_sigar_proc_impl);
rbsigar->logger = logger;
return obj;
}
/* Have to load Logger to test for it properly */
rb_require("logger");
if (rb_obj_is_kind_of(logger, rb_path2class("Logger"))) {
sigar_log_impl_set(sigar, rbsigar, rb_sigar_logger_impl);
rbsigar->logger = logger;
}
else {
rb_raise(rb_eArgError,
"value is not a proc object or subclass of Logger");
}
return obj;
}
static VALUE rb_sigar_log_level(VALUE obj)
{
SIGAR_GET;
return INT2FIX(sigar_log_level_get(sigar));
}
static VALUE rb_sigar_set_log_level(VALUE obj, VALUE level)
{
SIGAR_GET;
sigar_log_level_set(sigar, NUM2INT(level));
return obj;
}
#include "./rbsigar_generated.rx"
#define RB_SIGAR_CONST_INT(name) \
rb_define_const(rclass, #name, INT2FIX(SIGAR_##name))
#define RB_SIGAR_DEFINE_CONST_STR(name, value) \
rb_define_const(rclass, name, rb_obj_freeze(rb_str_new2(value)))
#define RB_SIGAR_CONST_STR(name) \
rb_define_const(rclass, #name, rb_obj_freeze(rb_str_new2(SIGAR_##name)))
static void Init_rbsigar_constants(VALUE rclass)
{
RB_SIGAR_CONST_INT(IFF_UP);
RB_SIGAR_CONST_INT(IFF_BROADCAST);
RB_SIGAR_CONST_INT(IFF_DEBUG);
RB_SIGAR_CONST_INT(IFF_LOOPBACK);
RB_SIGAR_CONST_INT(IFF_POINTOPOINT);
RB_SIGAR_CONST_INT(IFF_NOTRAILERS);
RB_SIGAR_CONST_INT(IFF_RUNNING);
RB_SIGAR_CONST_INT(IFF_NOARP);
RB_SIGAR_CONST_INT(IFF_PROMISC);
RB_SIGAR_CONST_INT(IFF_ALLMULTI);
RB_SIGAR_CONST_INT(IFF_MULTICAST);
RB_SIGAR_CONST_INT(NETCONN_CLIENT);
RB_SIGAR_CONST_INT(NETCONN_SERVER);
RB_SIGAR_CONST_INT(NETCONN_TCP);
RB_SIGAR_CONST_INT(NETCONN_UDP);
RB_SIGAR_CONST_INT(NETCONN_RAW);
RB_SIGAR_CONST_INT(NETCONN_UNIX);
RB_SIGAR_CONST_INT(TCP_ESTABLISHED);
RB_SIGAR_CONST_INT(TCP_SYN_SENT);
RB_SIGAR_CONST_INT(TCP_SYN_RECV);
RB_SIGAR_CONST_INT(TCP_FIN_WAIT1);
RB_SIGAR_CONST_INT(TCP_FIN_WAIT2);
RB_SIGAR_CONST_INT(TCP_TIME_WAIT);
RB_SIGAR_CONST_INT(TCP_CLOSE);
RB_SIGAR_CONST_INT(TCP_CLOSE_WAIT);
RB_SIGAR_CONST_INT(TCP_LAST_ACK);
RB_SIGAR_CONST_INT(TCP_LISTEN);
RB_SIGAR_CONST_INT(TCP_CLOSING);
RB_SIGAR_CONST_INT(TCP_IDLE);
RB_SIGAR_CONST_INT(TCP_BOUND);
RB_SIGAR_CONST_INT(TCP_UNKNOWN);
RB_SIGAR_CONST_INT(RTF_UP);
RB_SIGAR_CONST_INT(RTF_GATEWAY);
RB_SIGAR_CONST_INT(RTF_HOST);
RB_SIGAR_CONST_STR(NULL_HWADDR);
RB_SIGAR_CONST_INT(LOG_FATAL);
RB_SIGAR_CONST_INT(LOG_ERROR);
RB_SIGAR_CONST_INT(LOG_WARN);
RB_SIGAR_CONST_INT(LOG_INFO);
RB_SIGAR_CONST_INT(LOG_DEBUG);
RB_SIGAR_CONST_INT(LOG_TRACE);
}
static void Init_rbsigar_version(VALUE rclass)
{
sigar_version_t *sv = sigar_version_get();
RB_SIGAR_DEFINE_CONST_STR("BUILD_DATE", sv->build_date);
RB_SIGAR_DEFINE_CONST_STR("SCM_REVISION", sv->scm_revision);
RB_SIGAR_DEFINE_CONST_STR("VERSION", sv->version);
}
void Init_rbsigar(void)
{
VALUE rclass = rb_define_class("Sigar", rb_cObject);
rb_define_method(rclass, "logger", rb_sigar_logger, 0);
rb_define_method(rclass, "logger=", rb_sigar_set_logger, 1);
rb_define_method(rclass, "log_level", rb_sigar_log_level, 0);
rb_define_method(rclass, "log_level=", rb_sigar_set_log_level, 1);
rb_define_method(rclass, "cpu_info_list", rb_sigar_cpu_info_list, 0);
rb_define_method(rclass, "file_system_list", rb_sigar_file_system_list, 0);
rb_define_method(rclass, "net_connection_list", rb_sigar_net_connection_list, 1);
rb_define_method(rclass, "net_interface_list", rb_sigar_net_interface_list, 0);
rb_define_method(rclass, "net_services_name", rb_sigar_net_services_name, 2);
rb_define_method(rclass, "net_stat", rb_sigar_net_stat, 1);
rb_define_method(rclass, "net_stat_port", rb_sigar_net_stat_port, 3);
rb_define_method(rclass, "net_route_list", rb_sigar_net_route_list, 0);
rb_define_method(rclass, "who_list", rb_sigar_who_list, 0);
rb_define_method(rclass, "proc_list", rb_sigar_proc_list, -1);
rb_define_method(rclass, "proc_args", rb_sigar_proc_args, 1);
rb_define_method(rclass, "proc_env", rb_sigar_proc_env, 1);
rb_define_singleton_method(rclass, "new", rb_sigar_new, 0);
rb_define_singleton_method(rclass, "format_size", rb_sigar_format_size, 1);
rb_define_singleton_method(rclass, "net_interface_flags_to_s",
rb_sigar_net_interface_flags_to_s, 1);
rb_define_singleton_method(rclass, "net_connection_type_to_s",
rb_sigar_net_connection_type_to_s, 1);
rb_define_singleton_method(rclass, "net_connection_state_to_s",
rb_sigar_net_connection_state_to_s, 1);
Init_rbsigar_constants(rclass);
Init_rbsigar_version(rclass);
/* generated */
rb_sigar_define_module_methods(rclass);
rb_define_method(rb_cSigarNetStat, "tcp_states", rb_sigar_NetStat_tcp_states, 0);
}
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