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/*
* Copyright (C) 1999-2008 by CERN/IT/PDP/DM
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: Cupv_check.c,v $ $Revision: 1.11 $ $Date: 2008/01/29 10:09:39 $ CERN IT-DS/HSM Ben Couturier";
#endif /* not lint */
#include <errno.h>
#ifndef USE_CUPV
#include <stdio.h>
#endif
#include <string.h>
#include <sys/types.h>
#if defined(_WIN32)
#include <winsock2.h>
#else
#include <unistd.h>
#include <netinet/in.h>
#endif
#include "marshall.h"
#include "Cupv_api.h"
#ifndef USE_CUPV
#ifndef _WIN32
#if defined(_REENTRANT) || defined(_THREAD_SAFE)
#define strtok(X,Y) strtok_r(X,Y,&last)
#endif /* _REENTRANT || _THREAD_SAFE */
#endif /* _WIN32 */
#include "Cns.h"
#else
#include "Cupv.h"
#endif
#include "serrno.h"
extern char localdomain[CA_MAXHOSTNAMELEN+1];
Cupv_check(uid_t priv_uid, gid_t priv_gid, const char *src, const char *tgt, int priv)
{
int c;
char fqn[CA_MAXHOSTNAMELEN+1];
char func[16];
char *getconfent();
gid_t gid;
int l;
#ifndef USE_CUPV
#ifndef _WIN32
#if defined(_REENTRANT) || defined(_THREAD_SAFE)
char *last = NULL;
#endif
#endif
#endif
int msglen;
char *p;
char *q;
char *sbp;
char sendbuf[REQBUFSZ];
struct Cupv_api_thread_info *thip;
uid_t uid;
int lensrc, lentgt;
strcpy (func, "Cupv_check");
#ifdef USE_CUPV
if (Cupv_apiinit (&thip))
return (-1);
uid = geteuid();
gid = getegid();
#if defined(_WIN32)
if (uid < 0 || gid < 0) {
Cupv_errmsg (func, CUP53);
serrno = SENOMAPFND;
return (-1);
}
#endif
#endif
if (priv_uid < 0 || priv_gid < 0 || priv < 0) {
serrno = EINVAL;
return (-1);
}
if (src == NULL) {
lensrc = 0;
} else {
lensrc = strlen(src);
}
if (tgt == NULL) {
lentgt = 0;
} else {
lentgt = strlen(tgt);
}
if (lensrc > CA_MAXREGEXPLEN || lentgt > CA_MAXREGEXPLEN) {
serrno = EINVAL;
return(-1);
}
/* Applying a first check to see if the request is for root */
/* In this case just return without asking the server */
if (priv_uid == 0) {
if (src == NULL && tgt == NULL) {
/* Both NULL, authorized */
return(0);
} else if (strcmp(src, tgt)==0) {
/* src == tmp */
return(0);
}
} /* In other cases, a message is sent to the server for validation */
#ifndef USE_CUPV
if (priv_uid != 0) {
serrno = EACCES;
return (-1);
}
if ((p = getconfent (CNS_SCE, "TRUST", 1)) == NULL) {
serrno = EACCES;
return (-1);
}
l = strlen (localdomain);
for (q = strtok (p, "\t "); q; q = strtok (NULL, "\t ")) {
if (strcmp (src, q) == 0)
return (0);
if (strchr (q, '.'))
continue;
if (strlen (q) + l + 1 > CA_MAXHOSTNAMELEN)
continue;
sprintf (fqn, "%s.%s", q, localdomain);
if (strcmp (src, fqn) == 0)
return (0);
}
serrno = EACCES;
return (-1);
#else
/* Build request header */
sbp = sendbuf;
marshall_LONG (sbp, CUPV_MAGIC);
marshall_LONG (sbp, CUPV_CHECK);
q = sbp; /* save pointer. The next field will be updated */
msglen = 3 * LONGSIZE;
marshall_LONG(sbp, msglen);
marshall_LONG (sbp, uid);
marshall_LONG (sbp, gid);
marshall_LONG (sbp, priv_uid);
marshall_LONG (sbp, priv_gid);
if (src == NULL) {
marshall_STRING (sbp, "");
} else {
marshall_STRING(sbp, src);
}
if (tgt == NULL) {
marshall_STRING (sbp, "");
} else {
marshall_STRING(sbp, tgt);
}
marshall_LONG (sbp, priv);
msglen = sbp - sendbuf;
marshall_LONG (q, msglen); /* update length field */
while ((c = send2Cupv (NULL, sendbuf, msglen, NULL, 0)) &&
serrno == ECUPVNACT)
sleep (RETRYI);
return (c);
#endif
}
#ifndef USE_CUPV
Cupv_seterrbuf(char *buffer, int buflen)
{
return (0);
}
#endif
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