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|
/*
* Host Resources MIB - Installed Software group implementation - hr_swinst.c
*
*/
#include <net-snmp/net-snmp-config.h>
#if HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include <sys/stat.h>
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#if HAVE_DIRENT_H
#include <dirent.h>
#else
# define dirent direct
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# if HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
#ifdef HAVE_PKGLOCS_H
#include <pkglocs.h>
#endif
#ifdef HAVE_PKGINFO_H
#include <pkginfo.h>
#endif
#ifdef HAVE_LIBRPM
#include <rpm/rpmlib.h>
#include <rpm/header.h>
#include <fcntl.h>
#ifdef HAVE_RPMGETPATH
#include <rpm/rpmmacro.h>
#endif
#ifdef HAVE_RPM_RPMDB_H
#include <rpm/rpmdb.h>
#endif
#endif
#if HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#include "host_res.h"
#include "hr_swinst.h"
#include <net-snmp/utilities.h>
#define HRSWINST_MONOTONICALLY_INCREASING
/*********************
*
* Kernel & interface information,
* and internal forward declarations
*
*********************/
/*
* Reorganize the global data into a single static structure.
*
* Old New
*======================================================
* HRSW_directory swi->swi_directory
* HRSW_name[100] swi->swi_name[SNMP_MAXPATH]
* HRSW_index swi->swi_index
*
* swi->swi_dbpath (RPM only)
* swi->swi_maxrec (RPM only)
* swi->swi_nrec (RPM only)
* swi->swi_recs (RPM only)
* rpm_db swi->swi_rpmdb (RPM only)
* swi->swi_h (RPM only)
* swi->swi_prevx (RPM only)
*
* dp swi->swi_dp
* de_p swi->swi_dep
*/
typedef struct {
#if HAVE_LIBRPM
char *swi_directory;
#else
const char *swi_directory;
#endif
char swi_name[SNMP_MAXPATH]; /* XXX longest file name */
int swi_index;
#if HAVE_LIBRPM
const char *swi_dbpath;
time_t swi_timestamp; /* modify time on database */
int swi_maxrec; /* no. of allocations */
int swi_nrec; /* no. of valid offsets */
int *swi_recs; /* db record offsets */
rpmdb swi_rpmdb;
Header swi_h;
int swi_prevx;
#else
DIR *swi_dp;
struct dirent *swi_dep;
#endif
} SWI_t;
static SWI_t _myswi = { NULL, "", 0 }; /* XXX static for now */
int header_hrswinst(struct variable *, oid *, size_t *, int,
size_t *, WriteMethod **);
int header_hrswInstEntry(struct variable *, oid *, size_t *,
int, size_t *, WriteMethod **);
extern struct timeval starttime;
/*********************
*
* Initialisation & common implementation functions
*
*********************/
extern void Init_HR_SWInst(void);
extern int Get_Next_HR_SWInst(void);
extern void End_HR_SWInst(void);
extern int Save_HR_SW_info(int ix);
#ifdef HAVE_LIBRPM
static void Mark_HRSW_token(void);
static void Release_HRSW_token(void);
#else
#define Mark_HRSW_token()
#define Release_HRSW_token()
#endif
#define HRSWINST_CHANGE 1
#define HRSWINST_UPDATE 2
#define HRSWINST_INDEX 3
#define HRSWINST_NAME 4
#define HRSWINST_ID 5
#define HRSWINST_TYPE 6
#define HRSWINST_DATE 7
struct variable4 hrswinst_variables[] = {
{HRSWINST_CHANGE, ASN_TIMETICKS, RONLY, var_hrswinst, 1, {1}},
{HRSWINST_UPDATE, ASN_TIMETICKS, RONLY, var_hrswinst, 1, {2}},
{HRSWINST_INDEX, ASN_INTEGER, RONLY, var_hrswinst, 3, {3, 1, 1}},
{HRSWINST_NAME, ASN_OCTET_STR, RONLY, var_hrswinst, 3, {3, 1, 2}},
{HRSWINST_ID, ASN_OBJECT_ID, RONLY, var_hrswinst, 3, {3, 1, 3}},
{HRSWINST_TYPE, ASN_INTEGER, RONLY, var_hrswinst, 3, {3, 1, 4}},
{HRSWINST_DATE, ASN_OCTET_STR, RONLY, var_hrswinst, 3, {3, 1, 5}}
};
oid hrswinst_variables_oid[] = { 1, 3, 6, 1, 2, 1, 25, 6 };
#ifdef PKGLOC /* Description from HRSW_dir/.../pkginfo: DESC= */
#define _PATH_HRSW_directory PKGLOC
#endif
#ifdef hpux9 /* Description from HRSW_dir/.../index: fd: */
#define _PATH_HRSW_directory "/system"
#endif
#ifdef hpux10 /* Description from HRSW_dir/.../pfiles/INDEX: title */
#define _PATH_HRSW_directory "/var/adm/sw/products"
#endif
#ifdef hpux11 /* Description from HRSW_dir/.../pfiles/INDEX: title */
#define _PATH_HRSW_directory "/var/adm/sw/products"
#endif
#ifdef freebsd2
#define _PATH_HRSW_directory "/var/db/pkg"
#endif
void
init_hr_swinst(void)
{
#if defined(HAVE_LIBRPM) || defined(_PATH_HRSW_directory)
SWI_t *swi = &_myswi; /* XXX static for now */
#endif
#ifdef HAVE_LIBRPM
struct stat stat_buf;
#endif
/*
* Read settings from config file,
* or take system-specific defaults
*/
#ifdef HAVE_LIBRPM
if (swi->swi_directory == NULL) {
char path[SNMP_MAXPATH];
/*
* XXX distinguish between rpm-2.5.x and rpm-2.9x
*/
#ifdef HAVE_RPMGETPATH
rpmReadConfigFiles(NULL, NULL);
swi->swi_dbpath = rpmGetPath("%{_dbpath}", NULL);
#else
rpmReadConfigFiles(NULL, NULL, NULL, 0);
swi->swi_dbpath = rpmGetVar(RPMVAR_DBPATH);
#endif
if (swi->swi_directory != NULL)
free(swi->swi_directory);
snprintf(path, sizeof(path), "%s/Packages", swi->swi_dbpath);
if (stat(path, &stat_buf) == -1)
snprintf(path, sizeof(path), "%s/packages.rpm", swi->swi_dbpath);
path[ sizeof(path)-1 ] = 0;
swi->swi_directory = strdup(path);
}
#else
# ifdef _PATH_HRSW_directory
if (swi->swi_directory == NULL) {
swi->swi_directory = _PATH_HRSW_directory;
}
strcpy(swi->swi_name, "[installed name]"); /* default name */
# else
/*
* XXX SunOS4 package directory is ?? -MJS
*/
return; /* packages not known - don't register */
# endif
#endif
REGISTER_MIB("host/hr_swinst", hrswinst_variables, variable4,
hrswinst_variables_oid);
}
/*
* header_hrswinst(...
* Arguments:
* vp IN - pointer to variable entry that points here
* name IN/OUT - IN/name requested, OUT/name found
* length IN/OUT - length of IN/OUT oid's
* exact IN - TRUE if an exact match was requested
* var_len OUT - length of variable or 0 if function returned
* write_method
*/
int
header_hrswinst(struct variable *vp,
oid * name,
size_t * length,
int exact, size_t * var_len, WriteMethod ** write_method)
{
#define HRSWINST_NAME_LENGTH 9
oid newname[MAX_OID_LEN];
int result;
DEBUGMSGTL(("host/hr_swinst", "var_hrswinst: "));
DEBUGMSGOID(("host/hr_swinst", name, *length));
DEBUGMSG(("host/hr_swinst", " %d\n", exact));
memcpy((char *) newname, (char *) vp->name, vp->namelen * sizeof(oid));
newname[HRSWINST_NAME_LENGTH] = 0;
result = snmp_oid_compare(name, *length, newname, vp->namelen + 1);
if ((exact && (result != 0)) || (!exact && (result >= 0)))
return (MATCH_FAILED);
memcpy((char *) name, (char *) newname,
(vp->namelen + 1) * sizeof(oid));
*length = vp->namelen + 1;
*write_method = 0;
*var_len = sizeof(long); /* default to 'long' results */
return (MATCH_SUCCEEDED);
}
int
header_hrswInstEntry(struct variable *vp,
oid * name,
size_t * length,
int exact,
size_t * var_len, WriteMethod ** write_method)
{
#define HRSWINST_ENTRY_NAME_LENGTH 11
oid newname[MAX_OID_LEN];
int swinst_idx, LowIndex = -1;
int result;
int err = 0, errcount = 0;
DEBUGMSGTL(("host/hr_swinst", "var_hrswinstEntry: "));
DEBUGMSGOID(("host/hr_swinst", name, *length));
DEBUGMSG(("host/hr_swinst", " %d\n", exact));
memcpy((char *) newname, (char *) vp->name, vp->namelen * sizeof(oid));
/*
* Find "next" installed software entry
*/
do {
Init_HR_SWInst();
while ((swinst_idx = Get_Next_HR_SWInst()) != -1) {
DEBUGMSG(("host/hr_swinst", "(index %d ....", swinst_idx));
newname[HRSWINST_ENTRY_NAME_LENGTH] = swinst_idx;
DEBUGMSGOID(("host/hr_swinst", newname, *length));
DEBUGMSG(("host/hr_swinst", "\n"));
result = snmp_oid_compare(name, *length, newname, vp->namelen + 1);
if (exact && (result == 0)) {
LowIndex = swinst_idx;
err = Save_HR_SW_info(LowIndex);
break;
}
if ((!exact && (result < 0)) &&
(LowIndex == -1 || swinst_idx < LowIndex)) {
LowIndex = swinst_idx;
err = Save_HR_SW_info(LowIndex);
#ifdef HRSWINST_MONOTONICALLY_INCREASING
break;
#endif
}
}
if (err != 0 )
errcount++;
/* restart until Save_HR_SW_info() succeeds,max. 3 times */
} while (err != 0 && errcount < 3);
if (err != 0) {
DEBUGMSGTL(("host/hr_swinst", "restart did not help, bailing out\n"));
return (MATCH_FAILED);
}
Mark_HRSW_token();
End_HR_SWInst();
if (LowIndex == -1) {
DEBUGMSGTL(("host/hr_swinst", "... index out of range\n"));
return (MATCH_FAILED);
}
memcpy((char *) name, (char *) newname,
(vp->namelen + 1) * sizeof(oid));
*length = vp->namelen + 1;
*write_method = 0;
*var_len = sizeof(long); /* default to 'long' results */
DEBUGMSGTL(("host/hr_inst", "... get installed S/W stats "));
DEBUGMSGOID(("host/hr_inst", name, *length));
DEBUGMSG(("host/hr_inst", "\n"));
return LowIndex;
}
/*********************
*
* System specific implementation functions
*
*********************/
u_char *
var_hrswinst(struct variable * vp,
oid * name,
size_t * length,
int exact, size_t * var_len, WriteMethod ** write_method)
{
SWI_t *swi = &_myswi; /* XXX static for now */
int sw_idx = 0;
static char string[SNMP_MAXPATH];
u_char *ret = NULL;
struct stat stat_buf;
if (vp->magic < HRSWINST_INDEX) {
if (header_hrswinst(vp, name, length, exact, var_len, write_method)
== MATCH_FAILED)
return NULL;
} else {
sw_idx =
header_hrswInstEntry(vp, name, length, exact, var_len,
write_method);
if (sw_idx == MATCH_FAILED)
return NULL;
}
switch (vp->magic) {
case HRSWINST_CHANGE:
case HRSWINST_UPDATE:
string[0] = '\0';
if (swi->swi_directory != NULL) {
strncpy(string, swi->swi_directory, sizeof(string));
string[ sizeof(string)-1 ] = 0;
}
if (*string && (stat(string, &stat_buf) != -1)) {
if (stat_buf.st_mtime > starttime.tv_sec)
/*
* changed 'recently' - i.e. since this agent started
*/
long_return = (stat_buf.st_mtime - starttime.tv_sec) * 100;
else
long_return = 0; /* predates this agent */
} else
#if NETSNMP_NO_DUMMY_VALUES
return NULL;
#else
long_return = 363136200;
#endif
ret = (u_char *) & long_return;
break;
case HRSWINST_INDEX:
long_return = sw_idx;
ret = (u_char *) & long_return;
break;
case HRSWINST_NAME:
{
#ifdef HAVE_PKGINFO
char *pver;
# endif
strncpy(string, swi->swi_name, sizeof(string) - 1);
/* If we are on a solaris machine, the package names do not include versioning info,
* so we must add it manually
*/
#ifdef HAVE_PKGINFO
pver = pkgparam(swi->swi_name, "VERSION");
/* 1 spot for the terminating null and one for the dash */
if (pver &&
(strlen(pver) + 2 + strlen(string) <= sizeof(string))) {
strcat(string, "-");
strcat(string, pver);
}
# endif
/*
* This will be unchanged from the initial "null"
* value, if swi->swi_name is not defined
*/
string[sizeof(string) - 1] = '\0';
*var_len = strlen(string);
ret = (u_char *) string;
}
break;
case HRSWINST_ID:
*var_len = nullOidLen;
ret = (u_char *) nullOid;
break;
case HRSWINST_TYPE:
{
#ifdef HAVE_PKGINFO
/*
* at least on solaris2 this works
*/
char *catg = pkgparam(swi->swi_name, "CATEGORY");
if (catg == NULL) {
long_return = 1; /* unknown */
} else {
if (strstr(catg, "system") != NULL) {
long_return = 2; /* operatingSystem */
} else if (strstr(catg, "application") != NULL) {
long_return = 4; /* applcation */
} else {
long_return = 1; /* unknown */
}
free(catg);
}
#else
# ifdef HAVE_LIBRPM
char *rpm_groups;
if ( headerGetEntry(swi->swi_h, RPMTAG_GROUP, NULL, (void **) &rpm_groups, NULL) ) {
if ( strstr(rpm_groups, "System Environment") != NULL )
long_return = 2; /* operatingSystem */
else
long_return = 4; /* applcation */
} else {
long_return = 1; /* unknown */
}
# else
long_return = 1; /* unknown */
# endif
#endif
ret = (u_char *) & long_return;
}
break;
case HRSWINST_DATE:
{
#ifdef HAVE_LIBRPM
int *rpm_data;
if ( headerGetEntry(swi->swi_h, RPMTAG_INSTALLTIME, NULL, (void **) &rpm_data, NULL) ) {
time_t installTime = *rpm_data;
ret = date_n_time(&installTime, var_len);
} else {
ret = date_n_time(0, var_len);
}
#else
if (swi->swi_directory != NULL) {
snprintf(string, sizeof(string), "%s/%s",
swi->swi_directory, swi->swi_name);
string[ sizeof(string)-1 ] = 0;
stat(string, &stat_buf);
ret = date_n_time(&stat_buf.st_mtime, var_len);
} else {
#if NETSNMP_NO_DUMMY_VALUES
return NULL;
#endif
sprintf(string, "back in the mists of time");
*var_len = strlen(string);
ret = (u_char *) string;
}
#endif
}
break;
default:
DEBUGMSGTL(("snmpd", "unknown sub-id %d in var_hrswinst\n",
vp->magic));
ret = NULL;
break;
}
Release_HRSW_token();
return ret;
}
/*********************
*
* Internal implementation functions
*
*********************/
#ifdef HAVE_LIBRPM
static void
Check_HRSW_cache(void *xxx)
{
SWI_t *swi = (SWI_t *) xxx;
/*
* Make sure cache is up-to-date
*/
if (swi->swi_recs != NULL) {
struct stat sb;
lstat(swi->swi_directory, &sb);
if (swi->swi_timestamp == sb.st_mtime)
return;
swi->swi_timestamp = sb.st_mtime;
swi->swi_maxrec = 0;
}
/*
* Get header offsets
*/
{
int ix = 0;
int offset;
#if defined(RPMDBI_PACKAGES)
rpmdbMatchIterator mi = NULL;
Header h;
mi = rpmdbInitIterator(swi->swi_rpmdb, RPMDBI_PACKAGES, NULL, 0);
while ((h = rpmdbNextIterator(mi)) != NULL) {
offset = rpmdbGetIteratorOffset(mi);
#else
for (offset = rpmdbFirstRecNum(swi->swi_rpmdb);
offset != 0;
offset = rpmdbNextRecNum(swi->swi_rpmdb, offset)) {
#endif
if (ix >= swi->swi_maxrec) {
swi->swi_maxrec += 256;
swi->swi_recs = (swi->swi_recs == NULL)
? (int *) malloc(swi->swi_maxrec * sizeof(int))
: (int *) realloc(swi->swi_recs,
swi->swi_maxrec * sizeof(int));
}
swi->swi_recs[ix++] = offset;
#if !defined(RPMDBI_PACKAGES)
}
#else
}
rpmdbFreeIterator(mi);
#endif
swi->swi_nrec = ix;
}
}
#endif /* HAVE_LIBRPM */
void
Init_HR_SWInst(void)
{
SWI_t *swi = &_myswi; /* XXX static for now */
swi->swi_index = 0;
#ifdef HAVE_LIBRPM
if (swi->swi_rpmdb != NULL)
return;
if (rpmdbOpen("", &swi->swi_rpmdb, O_RDONLY, 0644) != 0)
swi->swi_index = -1;
Check_HRSW_cache(swi);
#else
if (swi->swi_directory != NULL) {
if (swi->swi_dp != NULL) {
closedir(swi->swi_dp);
swi->swi_dp = NULL;
}
if ((swi->swi_dp = opendir(swi->swi_directory)) == NULL)
swi->swi_index = -1;
} else
swi->swi_index = -1;
#endif
}
int
Get_Next_HR_SWInst(void)
{
SWI_t *swi = &_myswi; /* XXX static for now */
if (swi->swi_index == -1)
return -1;
#ifdef HAVE_LIBRPM
/*
* XXX Watchout: index starts with 1
*/
if (0 <= swi->swi_index && swi->swi_index < swi->swi_nrec)
return ++swi->swi_index;
#else
if (swi->swi_directory != NULL) {
while ((swi->swi_dep = readdir(swi->swi_dp)) != NULL) {
if (swi->swi_dep->d_name[0] == '.')
continue;
/*
* Ought to check for "properly-formed" entry
*/
return ++swi->swi_index;
}
}
#endif
return -1;
}
int
Save_HR_SW_info(int ix)
{
SWI_t *swi = &_myswi; /* XXX static for now */
#ifdef HAVE_LIBRPM
/*
* XXX Watchout: ix starts with 1
*/
if (1 <= ix && ix <= swi->swi_nrec && ix != swi->swi_prevx) {
int offset;
Header h;
char *n, *v, *r;
offset = swi->swi_recs[ix - 1];
#if defined(RPMDBI_PACKAGES)
{
rpmdbMatchIterator mi;
mi = rpmdbInitIterator(swi->swi_rpmdb, RPMDBI_PACKAGES,
&offset, sizeof(offset));
if ((h = rpmdbNextIterator(mi)) != NULL)
h = headerLink(h);
rpmdbFreeIterator(mi);
}
#else
h = rpmdbGetRecord(swi->swi_rpmdb, offset);
#endif
if (h == NULL) {
DEBUGMSGTL(("host/hr_swinst",
"RPM cache has probably expired when reading entry %d, "
"reloading...\n", ix));
swi->swi_timestamp = 0;
return -1;
}
if (swi->swi_h != NULL)
headerFree(swi->swi_h);
swi->swi_h = h;
swi->swi_prevx = ix;
headerGetEntry(swi->swi_h, RPMTAG_NAME, NULL, (void **) &n, NULL);
headerGetEntry(swi->swi_h, RPMTAG_VERSION, NULL, (void **) &v,
NULL);
headerGetEntry(swi->swi_h, RPMTAG_RELEASE, NULL, (void **) &r,
NULL);
snprintf(swi->swi_name, sizeof(swi->swi_name), "%s-%s-%s", n, v, r);
swi->swi_name[ sizeof(swi->swi_name)-1 ] = 0;
}
#else
snprintf(swi->swi_name, sizeof(swi->swi_name), swi->swi_dep->d_name);
swi->swi_name[ sizeof(swi->swi_name)-1 ] = 0;
#endif
return 0;
}
#ifdef HAVE_LIBRPM
void
Mark_HRSW_token(void)
{
}
void
Release_HRSW_token(void)
{
SWI_t *swi = &_myswi; /* XXX static for now */
if (swi != NULL && swi->swi_h) {
headerFree(swi->swi_h);
swi->swi_h = NULL;
swi->swi_prevx = -1;
}
}
#endif /* HAVE_LIBRPM */
void
End_HR_SWInst(void)
{
SWI_t *swi = &_myswi; /* XXX static for now */
#ifdef HAVE_LIBRPM
rpmdbClose(swi->swi_rpmdb); /* or only on finishing ? */
swi->swi_rpmdb = NULL;
#else
if (swi->swi_dp != NULL)
closedir(swi->swi_dp);
swi->swi_dp = NULL;
#endif
}
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