/* make sure user authenticated on rx call acall is in list of valid
users. Copy the "real name" of the authenticated user into namep
if a pointer is passed.
*/
afs_int32
afsconf_SuperUser(struct afsconf_dir *adir, struct rx_call *acall, char *namep)
{
register struct rx_connection *tconn;
register afs_int32 code;
int flag;
LOCK_GLOBAL_MUTEX;
if (!adir) {
UNLOCK_GLOBAL_MUTEX;
return 0;
}
if (afsconf_GetNoAuthFlag(adir)) {
if (namep)
strcpy(namep, "<NoAuth>");
UNLOCK_GLOBAL_MUTEX;
return 1;
}
tconn = rx_ConnectionOf(acall);
code = rx_SecurityClassOf(tconn);
if (code == 0) {
UNLOCK_GLOBAL_MUTEX;
return 0; /* not authenticated at all, answer is no */
} else if (code == 1) {
/* bcrypt tokens */
UNLOCK_GLOBAL_MUTEX;
return 0; /* not supported any longer */
} else if (code == 2) {
char tname[MAXKTCNAMELEN]; /* authentication from ticket */
char tinst[MAXKTCNAMELEN];
char tcell[MAXKTCREALMLEN];
char tcell_l[MAXKTCREALMLEN];
char *tmp;
/* keep track of which one actually authorized request */
char uname[MAXKTCNAMELEN + MAXKTCNAMELEN + MAXKTCREALMLEN + 3];
afs_uint32 exp;
static char lcell[MAXCELLCHARS] = "";
static char lrealms[AFS_NUM_LREALMS][AFS_REALM_SZ];
static int num_lrealms = -1;
int lrealm_match = 0, i;
/* get auth details from server connection */
code =
rxkad_GetServerInfo(acall->conn, NULL, &exp, tname, tinst, tcell,
NULL);
if (code) {
UNLOCK_GLOBAL_MUTEX;
return 0; /* bogus connection/other error */
}
/* don't bother checking anything else if tix have expired */
#ifdef AFS_PTHREAD_ENV
if (exp < clock_Sec()) {
#else
if (exp < FT_ApproxTime()) {
#endif
UNLOCK_GLOBAL_MUTEX;
return 0; /* expired tix */
}
/* generate lowercased version of cell name */
strcpy(tcell_l, tcell);
tmp = tcell_l;
while (*tmp) {
*tmp = tolower(*tmp);
tmp++;
}
/* determine local cell name. It's static, so will only get
* calculated the first time through */
if (!lcell[0])
afsconf_GetLocalCell(adir, lcell, sizeof(lcell));
/* if running a krb environment, also get the local realm */
/* note - this assumes AFS_REALM_SZ <= MAXCELLCHARS */
/* just set it to lcell if it fails */
if (num_lrealms == -1) {
for (i=0; i<AFS_NUM_LREALMS; i++) {
if (afs_krb_get_lrealm(lrealms[i], i) != 0 /*KSUCCESS*/)
break;
}
if (i == 0) {
strncpy(lrealms[0], lcell, AFS_REALM_SZ);
num_lrealms = 1;
} else {
num_lrealms = i;
}
}
/* See if the ticket cell matches one of the local realms */
lrealm_match = 0;
for ( i=0;i<num_lrealms;i++ ) {
if (!strcasecmp(lrealms[i], tcell)) {
lrealm_match = 1;
break;
}
}
/* If yes, then make sure that the name is not present in
* an exclusion list */
if (lrealm_match) {
if (tinst[0])
snprintf(uname,sizeof(uname),"%s.%s@%s",tname,tinst,tcell);
else
snprintf(uname,sizeof(uname),"%s@%s",tname,tcell);
if (afs_krb_exclusion(uname))
lrealm_match = 0;
}
/* start with no uname and no authorization */
strcpy(uname, "");
flag = 0;
/* localauth special case */
if (strlen(tinst) == 0 && strlen(tcell) == 0
&& !strcmp(tname, AUTH_SUPERUSER)) {
strcpy(uname, "<LocalAuth>");
flag = 1;
/* cell of connection matches local cell or one of the realms */
} else if (!strcasecmp(tcell, lcell) || lrealm_match) {
if ((tmp = CompFindUser(adir, tname, ".", tinst, NULL))) {
strcpy(uname, tmp);
flag = 1;
#ifdef notyet
} else if ((tmp = CompFindUser(adir, tname, "/", tinst, NULL))) {
strcpy(uname, tmp);
flag = 1;
#endif
}
/* cell of conn doesn't match local cell or realm */
} else {
if ((tmp = CompFindUser(adir, tname, ".", tinst, tcell))) {
strcpy(uname, tmp);
flag = 1;
#ifdef notyet
} else if ((tmp = CompFindUser(adir, tname, "/", tinst, tcell))) {
strcpy(uname, tmp);
flag = 1;
#endif
} else if ((tmp = CompFindUser(adir, tname, ".", tinst, tcell_l))) {
strcpy(uname, tmp);
flag = 1;
#ifdef notyet
} else if ((tmp = CompFindUser(adir, tname, "/", tinst, tcell_l))) {
strcpy(uname, tmp);
flag = 1;
#endif
}
}
if (namep)
strcpy(namep, uname);
UNLOCK_GLOBAL_MUTEX;
return flag;
} else { /* some other auth type */
UNLOCK_GLOBAL_MUTEX;
return 0; /* mysterious, just say no */
}
}
static int
kerberosSuperUser(struct afsconf_dir *adir, char *tname, char *tinst,
char *tcell, char *namep)
{
char tcell_l[MAXKTCREALMLEN];
char *tmp;
/* keep track of which one actually authorized request */
char uname[MAXKTCNAMELEN + MAXKTCNAMELEN + MAXKTCREALMLEN + 3];
static char lcell[MAXCELLCHARS] = "";
static char lrealms[AFS_NUM_LREALMS][AFS_REALM_SZ];
static int num_lrealms = -1;
int lrealm_match = 0, i;
int flag;
/* generate lowercased version of cell name */
strcpy(tcell_l, tcell);
tmp = tcell_l;
while (*tmp) {
*tmp = tolower(*tmp);
tmp++;
}
/* determine local cell name. It's static, so will only get
* calculated the first time through */
if (!lcell[0])
afsconf_GetLocalCell(adir, lcell, sizeof(lcell));
/* if running a krb environment, also get the local realm */
/* note - this assumes AFS_REALM_SZ <= MAXCELLCHARS */
/* just set it to lcell if it fails */
if (num_lrealms == -1) {
for (i=0; i<AFS_NUM_LREALMS; i++) {
if (afs_krb_get_lrealm(lrealms[i], i) != 0 /*KSUCCESS*/)
break;
}
if (i == 0) {
strncpy(lrealms[0], lcell, AFS_REALM_SZ);
num_lrealms = 1;
} else {
num_lrealms = i;
}
}
/* See if the ticket cell matches one of the local realms */
lrealm_match = 0;
for ( i=0;i<num_lrealms;i++ ) {
if (!strcasecmp(lrealms[i], tcell)) {
lrealm_match = 1;
break;
}
}
/* If yes, then make sure that the name is not present in
* an exclusion list */
if (lrealm_match) {
if (tinst[0])
snprintf(uname,sizeof(uname),"%s.%s@%s",tname,tinst,tcell);
else
snprintf(uname,sizeof(uname),"%s@%s",tname,tcell);
if (afs_krb_exclusion(uname))
lrealm_match = 0;
}
/* start with no uname and no authorization */
strcpy(uname, "");
flag = 0;
/* localauth special case */
if (strlen(tinst) == 0 && strlen(tcell) == 0
&& !strcmp(tname, AUTH_SUPERUSER)) {
strcpy(uname, "<LocalAuth>");
flag = 1;
/* cell of connection matches local cell or one of the realms */
} else if (!strcasecmp(tcell, lcell) || lrealm_match) {
if ((tmp = CompFindUser(adir, tname, ".", tinst, NULL))) {
strcpy(uname, tmp);
flag = 1;
#ifdef notyet
} else if ((tmp = CompFindUser(adir, tname, "/", tinst, NULL))) {
strcpy(uname, tmp);
flag = 1;
#endif
}
/* cell of conn doesn't match local cell or realm */
} else {
if ((tmp = CompFindUser(adir, tname, ".", tinst, tcell))) {
strcpy(uname, tmp);
flag = 1;
#ifdef notyet
} else if ((tmp = CompFindUser(adir, tname, "/", tinst, tcell))) {
strcpy(uname, tmp);
flag = 1;
#endif
} else if ((tmp = CompFindUser(adir, tname, ".", tinst, tcell_l))) {
strcpy(uname, tmp);
flag = 1;
#ifdef notyet
} else if ((tmp = CompFindUser(adir, tname, "/", tinst, tcell_l))) {
strcpy(uname, tmp);
flag = 1;
#endif
}
}
if (namep)
strcpy(namep, uname);
return flag;
}
