implemented os_info_t class
This commit is contained in:
Andreas Steffen
@@ -0,0 +1,309 @@
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/*
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* Copyright (C) 2012 Andreas Steffen
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* HSR Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "os_info.h"
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#include <sys/utsname.h>
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#include <utils/linked_list.h>
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#include <debug.h>
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typedef struct private_os_info_t private_os_info_t;
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/**
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* Private data of an os_info_t object.
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*
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*/
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struct private_os_info_t {
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/**
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* Public os_info_t interface.
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*/
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os_info_t public;
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/**
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* OS name
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*/
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chunk_t name;
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/**
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* OS version
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*/
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chunk_t version;
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};
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METHOD(os_info_t, get_name, chunk_t,
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private_os_info_t *this)
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{
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return this->name;
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}
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METHOD(os_info_t, get_version, chunk_t,
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private_os_info_t *this)
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{
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return this->version;
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}
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METHOD(os_info_t, create_package_enumerator, enumerator_t*,
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private_os_info_t *this)
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{
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/* TODO */
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return NULL;
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}
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METHOD(os_info_t, destroy, void,
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private_os_info_t *this)
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{
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free(this->name.ptr);
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free(this->version.ptr);
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free(this);
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}
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#define RELEASE_LSB 0
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#define RELEASE_DEBIAN 1
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/**
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* Determine Linux distribution version and hardware platform
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*/
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static bool extract_platform_info(chunk_t *name, chunk_t *version)
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{
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FILE *file;
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u_char buf[BUF_LEN], *pos = buf;
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int len = BUF_LEN - 1;
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chunk_t os_name = chunk_empty;
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chunk_t os_version = chunk_empty;
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struct utsname uninfo;
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int i;
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/* Linux/Unix distribution release info (from http://linuxmafia.com) */
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const char* releases[] = {
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"/etc/lsb-release", "/etc/debian_version",
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"/etc/SuSE-release", "/etc/novell-release",
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"/etc/sles-release", "/etc/redhat-release",
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"/etc/fedora-release", "/etc/gentoo-release",
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"/etc/slackware-version", "/etc/annvix-release",
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"/etc/arch-release", "/etc/arklinux-release",
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"/etc/aurox-release", "/etc/blackcat-release",
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"/etc/cobalt-release", "/etc/conectiva-release",
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"/etc/debian_release", "/etc/immunix-release",
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"/etc/lfs-release", "/etc/linuxppc-release",
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"/etc/mandrake-release", "/etc/mandriva-release",
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"/etc/mandrakelinux-release", "/etc/mklinux-release",
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"/etc/pld-release", "/etc/redhat_version",
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"/etc/slackware-release", "/etc/e-smith-release",
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"/etc/release", "/etc/sun-release",
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"/etc/tinysofa-release", "/etc/turbolinux-release",
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"/etc/ultrapenguin-release", "/etc/UnitedLinux-release",
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"/etc/va-release", "/etc/yellowdog-release"
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};
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const char lsb_distrib_id[] = "DISTRIB_ID=";
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const char lsb_distrib_release[] = "DISTRIB_RELEASE=";
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for (i = 0; i < countof(releases); i++)
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{
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file = fopen(releases[i], "r");
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if (!file)
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{
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continue;
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}
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/* read release file into buffer */
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fseek(file, 0, SEEK_END);
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len = min(ftell(file), len);
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rewind(file);
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buf[len] = '\0';
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if (fread(buf, 1, len, file) != len)
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{
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DBG1(DBG_IMC, "failed to read file \"%s\"", releases[i]);
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fclose(file);
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return FALSE;
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}
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fclose(file);
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DBG1(DBG_IMC, "processing \"%s\" file", releases[i]);
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switch (i)
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{
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case RELEASE_LSB:
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{
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/* Determine Distribution ID */
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pos = strstr(buf, lsb_distrib_id);
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if (!pos)
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{
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DBG1(DBG_IMC, "failed to find begin of DISTRIB_ID field");
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return FALSE;
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}
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pos += strlen(lsb_distrib_id);
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os_name.ptr = pos;
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pos = strchr(pos, '\n');
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if (!pos)
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{
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DBG1(DBG_IMC, "failed to find end of DISTRIB_ID field");
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return FALSE;
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}
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os_name.len = pos - os_name.ptr;
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/* Determine Distribution Release */
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pos = strstr(buf, lsb_distrib_release);
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if (!pos)
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{
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DBG1(DBG_IMC, "failed to find begin of DISTRIB_RELEASE field");
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return FALSE;
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}
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pos += strlen(lsb_distrib_release);
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os_version.ptr = pos;
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pos = strchr(pos, '\n');
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if (!pos)
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{
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DBG1(DBG_IMC, "failed to find end of DISTRIB_RELEASE field");
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return FALSE;
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}
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os_version.len = pos - os_version.ptr;
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break;
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}
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case RELEASE_DEBIAN:
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{
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char str_debian[] = "Debian";
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os_name = chunk_create(str_debian, strlen(str_debian));
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os_version.ptr = buf;
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pos = strchr(buf, '\n');
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if (!pos)
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{
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DBG1(DBG_PTS, "failed to find end of release string");
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return FALSE;
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}
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os_version.len = pos - os_version.ptr;
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break;
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}
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default:
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{
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const char str_release[] = " release ";
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os_name.ptr = buf;
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pos = strstr(buf, str_release);
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if (!pos)
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{
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DBG1(DBG_IMC, "failed to find release keyword");
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return FALSE;
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}
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os_name.len = pos - os_name.ptr;
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pos += strlen(str_release);
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os_version.ptr = pos;
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pos = strchr(pos, '\n');
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if (!pos)
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{
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DBG1(DBG_IMC, "failed to find end of release string");
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return FALSE;
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}
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os_version.len = pos - os_version.ptr;
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break;
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}
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}
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break;
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}
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if (!os_name.ptr)
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{
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DBG1(DBG_IMC, "no distribution release file found");
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return FALSE;
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}
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if (uname(&uninfo) < 0)
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{
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DBG1(DBG_IMC, "could not retrieve machine architecture");
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return FALSE;
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}
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/* copy OS name */
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*name = chunk_clone(os_name);
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/* copy OS version and machine architecture */
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*version = chunk_alloc(os_version.len + 1 + strlen(uninfo.machine));
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pos = version->ptr;
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memcpy(pos, os_version.ptr, os_version.len);
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pos += os_version.len;
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*pos++ = ' ';
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memcpy(pos, uninfo.machine, strlen(uninfo.machine));
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return TRUE;
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}
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/**
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* See header
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*/
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os_info_t *os_info_create(void)
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{
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private_os_info_t *this;
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chunk_t name, version;
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/* As an opton OS name and OS version can be configured manually */
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name.ptr = lib->settings->get_str(lib->settings,
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"libimcv.os_info.name", NULL);
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version.ptr = lib->settings->get_str(lib->settings,
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"libimcv.os_info.version", NULL);
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if (name.ptr && version.ptr)
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{
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name.len = strlen(name.ptr);
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name = chunk_clone(name);
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version.len = strlen(version.ptr);
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version = chunk_clone(version);
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}
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else
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{
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if (!extract_platform_info(&name, &version))
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{
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return NULL;
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}
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}
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DBG1(DBG_IMC, "operating system name is '%.*s'",
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name.len, name.ptr);
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DBG1(DBG_IMC, "operating system version is '%.*s'",
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version.len, version.ptr);
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INIT(this,
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.public = {
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.get_name = _get_name,
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.get_version = _get_version,
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.create_package_enumerator = _create_package_enumerator,
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.destroy = _destroy,
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},
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.name = name,
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.version = version,
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);
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return &this->public;
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}
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@@ -0,0 +1,65 @@
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/*
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* Copyright (C) 2012 Andreas Steffen
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* HSR Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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/**
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* @defgroup os_info os_info
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* @{ @ingroup libimcv
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*/
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#ifndef OS_INFO_H_
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#define OS_INFO_H_
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typedef struct os_info_t os_info_t;
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#include <library.h>
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/**
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* Interface for the Operating System (OS) information module
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*/
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struct os_info_t {
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/**
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* Get the OS product name or distribution
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*
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* @return OS name
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*/
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chunk_t (*get_name)(os_info_t *this);
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/**
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* Get the OS version or release
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*
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* @return OS version
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*/
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chunk_t (*get_version)(os_info_t *this);
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/**
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* Enumerates over all installed packages
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*
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* @return return package enumerator
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*/
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enumerator_t* (*create_package_enumerator)(os_info_t *this);
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/**
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* Destroys an os_info_t object.
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*/
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void (*destroy)(os_info_t *this);
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};
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/**
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* Create an os_info_t object
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*/
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os_info_t* os_info_create(void);
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#endif /** OS_INFO_H_ @}*/
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