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Allow getent(1) to display utmpx entries as well.

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Because getutxent also matches the typical get*ent format of library
routines, I thought it would be a good idea to teach it how to read
utmpx databases. getent(1) just gives a raw dump, which is very useful
when debugging problems related to parsing/logging.
This commit is contained in:
Ed Schouten 2010-01-13 18:08:00 +00:00
parent 561f61e25d
commit 86586473e3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=202198
2 changed files with 91 additions and 0 deletions
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2
usr.bin/getent/getent.1
View File

@ -75,6 +75,7 @@ argument may be one of:
.It Li rpc Ta name number [alias ...]
.It Li services Ta name port/protocol [alias ...]
.It Li shells Ta /path/to/shell
.It Li utmpx Ta [time] type: properties
.El
.Pp
If one or more
@ -109,6 +110,7 @@ utility exits 0 on success,
or 3 if there is no support for enumeration on
.Ar database .
.Sh SEE ALSO
.Xr getutxent 3 ,
.Xr ethers 5 ,
.Xr group 5 ,
.Xr hosts 5 ,

89
usr.bin/getent/getent.c
View File

@ -60,6 +60,7 @@ __FBSDID("$FreeBSD$");
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <utmpx.h>
static int usage(void);
static int parsenum(const char *, unsigned long *);
@ -72,6 +73,7 @@ static int protocols(int, char *[]);
static int rpc(int, char *[]);
static int services(int, char *[]);
static int shells(int, char *[]);
static int utmpx(int, char *[]);
enum {
RV_OK = 0,
@ -93,6 +95,7 @@ static struct getentdb {
{ "rpc", rpc, },
{ "services", services, },
{ "shells", shells, },
{ "utmpx", utmpx, },
{ NULL, NULL, },
};
@ -562,3 +565,89 @@ shells(int argc, char *argv[])
endusershell();
return rv;
}
/*
* utmpx
*/
#define UTMPXPRINTID do { \
size_t i; \
for (i = 0; i < sizeof ut->ut_id; i++) \
printf("%02hhx", ut->ut_id[i]); \
} while (0)
static void
utmpxprint(const struct utmpx *ut)
{
if (ut->ut_type == EMPTY)
return;
printf("[%.24s] ", ctime(&ut->ut_tv.tv_sec));
switch (ut->ut_type) {
case BOOT_TIME:
printf("system boot\n");
return;
case SHUTDOWN_TIME:
printf("system shutdown\n");
return;
case OLD_TIME:
printf("old system time\n");
return;
case NEW_TIME:
printf("new system time\n");
return;
case USER_PROCESS:
printf("user process: id=\"");
UTMPXPRINTID;
printf("\" user=\"%s\" line=\"%s\" host=\"%s\"\n",
ut->ut_user, ut->ut_line, ut->ut_host);
break;
case DEAD_PROCESS:
printf("dead process: id=\"");
UTMPXPRINTID;
printf("\"\n");
break;
default:
printf("unknown record type\n");
break;
}
}
static int
utmpx(int argc, char *argv[])
{
const struct utmpx *ut;
int rv = RV_OK, db;
assert(argc > 1);
assert(argv != NULL);
if (argc == 2) {
db = UTXDB_ACTIVE;
} else if (argc == 3) {
if (strcmp(argv[2], "active") == 0)
db = UTXDB_ACTIVE;
else if (strcmp(argv[2], "lastlogin") == 0)
db = UTXDB_LASTLOGIN;
else if (strcmp(argv[2], "log") == 0)
db = UTXDB_LOG;
else
rv = RV_USAGE;
} else {
rv = RV_USAGE;
}
if (rv == RV_USAGE) {
fprintf(stderr, "Usage: %s utmpx [active | lastlogin | log]\n",
getprogname());
} else if (rv == RV_OK) {
if (setutxdb(db, NULL) != 0)
return (RV_NOTFOUND);
while ((ut = getutxent()) != NULL)
utmpxprint(ut);
endutxent();
}
return (rv);
}