int
getgrnam_r(const char *name, struct group *grp, char *buffer, size_t buflen,
struct group **result)
{
int rv, retval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_getgrnam_r, NULL)
NS_DNS_CB(_dns_getgrnam_r, NULL)
NS_NIS_CB(_nis_getgrnam_r, NULL)
NS_COMPAT_CB(_compat_getgrnam_r, NULL)
NS_NULL_CB
};
_DIAGASSERT(name != NULL);
_DIAGASSERT(grp != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
retval = 0;
mutex_lock(&__grmutex);
rv = nsdispatch(NULL, dtab, NSDB_GROUP, "getgrnam_r", __nsdefaultcompat,
&retval, name, grp, buffer, buflen, result);
mutex_unlock(&__grmutex);
switch (rv) {
case NS_SUCCESS:
case NS_NOTFOUND:
return 0;
default:
return retval;
}
}
struct hostent *
gethostbyname2(const char *name, int type)
{
static struct hostent host, *hp;
static char hostbuf[BUFSIZ];
static int herr;
int rval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_ht_gethostbyname, NULL)
{ NSSRC_DNS, _dns_gethostbyname, NULL },
NS_NIS_CB(_nis_gethostbyname, NULL) /* force -DHESIOD */
{ 0 }
};
#ifdef HAVE_DD_LOCK
__lock_acquire(name_lock);
#endif
rval = nsdispatch((void *)&hp, dtab, NSDB_HOSTS, "gethostbyname",
default_src, name, type, &host, hostbuf, BUFSIZ, &herr);
#ifdef HAVE_DD_LOCK
__lock_release(name_lock);
#endif
if (rval != NS_SUCCESS)
return NULL;
else
return hp;
}
/*ARGSUSED*/
static int
_compat_setgroupent(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
int stayopen = va_arg(ap, int);
int rv;
static const ns_dtab dtab[] = {
NS_FILES_CB(__grbad_compat, "files")
NS_DNS_CB(_dns_setgroupent, NULL)
NS_NIS_CB(_nis_setgroupent, NULL)
NS_COMPAT_CB(__grbad_compat, "compat")
NS_NULL_CB
};
/* force group_compat setgroupent() */
(void) nsdispatch(NULL, dtab, NSDB_GROUP_COMPAT, "setgroupent",
__nsdefaultnis_forceall, &rv, stayopen);
_compat_state.stayopen = stayopen;
rv = __grstart_compat(&_compat_state);
*retval = (rv == NS_SUCCESS);
return rv;
}
int
__gethostbyname_r(const char *name, struct hostent *result,
void *buffer, int buflen, struct hostent **hp, int *herr)
{
int rval;
int type;
static const ns_dtab dtab[] = {
NS_FILES_CB(_ht_gethostbyname, NULL)
{ NSSRC_DNS, _dns_gethostbyname, NULL },
NS_NIS_CB(_nis_gethostbyname, NULL) /* force -DHESIOD */
{ 0 }
};
if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
h_errno = NETDB_INTERNAL;
return HOST_NOT_FOUND;
}
if (_res.options & RES_USE_INET6)
type = AF_INET6;
else
type = AF_INET;
rval = nsdispatch((void *)hp, dtab, NSDB_HOSTS, "gethostbyname",
default_src, name, type, result, buffer, buflen, herr);
if (rval != NS_SUCCESS)
return rval;
else
return 0;
}
void
setgrent(void)
{
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_setgrent, NULL)
NS_DNS_CB(_dns_setgrent, NULL)
NS_NIS_CB(_nis_setgrent, NULL)
NS_COMPAT_CB(_compat_setgrent, NULL)
NS_NULL_CB
};
mutex_lock(&__grmutex);
/* force all setgrent() methods */
(void) nsdispatch(NULL, dtab, NSDB_GROUP, "setgrent",
__nsdefaultcompat_forceall);
mutex_unlock(&__grmutex);
}
static struct hostent *
_ghbyname(const char *name, int af, int flags, int *errp)
{
struct hostent *hp;
int rval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_ghbyname, NULL)
{ NSSRC_DNS, _dns_ghbyname, NULL },
NS_NIS_CB(_nis_ghbyname, NULL)
{ 0 }
};
if (flags & AI_ADDRCONFIG) {
int s;
/*
* TODO:
* Note that implementation dependent test for address
* configuration should be done everytime called
* (or apropriate interval),
* because addresses will be dynamically assigned or deleted.
*/
if (af == AF_UNSPEC) {
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
af = AF_INET;
else {
close(s);
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
af = AF_INET6;
else
close(s);
}
}
if (af != AF_UNSPEC) {
if ((s = socket(af, SOCK_DGRAM, 0)) < 0)
return NULL;
close(s);
}
}
rval = nsdispatch(&hp, dtab, NSDB_HOSTS, "ghbyname", default_src,
name, af, errp);
return (rval == NS_SUCCESS) ? hp : NULL;
}
int
setgroupent(int stayopen)
{
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_setgroupent, NULL)
NS_DNS_CB(_dns_setgroupent, NULL)
NS_NIS_CB(_nis_setgroupent, NULL)
NS_COMPAT_CB(_compat_setgroupent, NULL)
NS_NULL_CB
};
int rv, retval;
mutex_lock(&__grmutex);
/* force all setgroupent() methods */
rv = nsdispatch(NULL, dtab, NSDB_GROUP, "setgroupent",
__nsdefaultcompat_forceall, &retval, stayopen);
mutex_unlock(&__grmutex);
return (rv == NS_SUCCESS) ? retval : 0;
}
/*ARGSUSED*/
static int
_compat_endgrent(void *nsrv, void *nscb, va_list ap)
{
static const ns_dtab dtab[] = {
NS_FILES_CB(__grbad_compat, "files")
NS_DNS_CB(_dns_endgrent, NULL)
NS_NIS_CB(_nis_endgrent, NULL)
NS_COMPAT_CB(__grbad_compat, "compat")
NS_NULL_CB
};
/* force group_compat endgrent() */
(void) nsdispatch(NULL, dtab, NSDB_GROUP_COMPAT, "endgrent",
__nsdefaultnis_forceall);
/* reset state, close fp */
_compat_state.stayopen = 0;
return __grend_compat(&_compat_state);
}
struct group *
getgrnam(const char *name)
{
int rv;
struct group *retval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_getgrnam, NULL)
NS_DNS_CB(_dns_getgrnam, NULL)
NS_NIS_CB(_nis_getgrnam, NULL)
NS_COMPAT_CB(_compat_getgrnam, NULL)
NS_NULL_CB
};
mutex_lock(&__grmutex);
rv = nsdispatch(NULL, dtab, NSDB_GROUP, "getgrnam", __nsdefaultcompat,
&retval, name);
mutex_unlock(&__grmutex);
return (rv == NS_SUCCESS) ? retval : NULL;
}
int
__gethostbyaddr_r (const char *addr, int len, int type,
struct hostent *result, void *buffer, int buflen,
struct hostent **hp, int *herr)
{
int rval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_ht_gethostbyaddr, NULL)
{ NSSRC_DNS, _dns_gethostbyaddr, NULL },
NS_NIS_CB(_nis_gethostbyaddr, NULL) /* force -DHESIOD */
{ 0 }
};
rval = nsdispatch((void *)hp, dtab, NSDB_HOSTS, "gethostbyaddr",
default_src, addr, len, type, result, buffer, buflen, herr);
if(rval != NS_SUCCESS)
return rval;
else
return 0;
}
/*
* __grscan_compat
* Scan state->fp for the next desired entry.
* If search is zero, return the next entry.
* If search is non-zero, look for a specific name (if name != NULL),
* or a specific gid (if name == NULL).
* Sets *retval to the errno if the result is not NS_SUCCESS or
* NS_NOTFOUND.
*
* searchfunc is invoked when a compat "+" lookup is required;
* searchcookie is passed as the first argument to searchfunc,
* the second argument is the group result.
* This should return NS_NOTFOUND when "no more groups" from compat src.
* If searchfunc is NULL then nsdispatch of getgrent is used.
* This is primarily intended for getgroupmembership(3)'s compat backend.
*/
int
__grscan_compat(int *retval, struct group *grp, char *buffer, size_t buflen,
struct __grstate_compat *state, int search, const char *name, gid_t gid,
int (*searchfunc)(void *, struct group **), void *searchcookie)
{
int rv;
char filebuf[_GETGR_R_SIZE_MAX], *ep;
static const ns_dtab compatentdtab[] = {
NS_FILES_CB(__grbad_compat, "files")
NS_DNS_CB(_dns_getgrent_r, NULL)
NS_NIS_CB(_nis_getgrent_r, NULL)
NS_COMPAT_CB(__grbad_compat, "compat")
NS_NULL_CB
};
static const ns_dtab compatgiddtab[] = {
NS_FILES_CB(__grbad_compat, "files")
NS_DNS_CB(_dns_getgrgid_r, NULL)
NS_NIS_CB(_nis_getgrgid_r, NULL)
NS_COMPAT_CB(__grbad_compat, "compat")
NS_NULL_CB
};
static const ns_dtab compatnamdtab[] = {
NS_FILES_CB(__grbad_compat, "files")
NS_DNS_CB(_dns_getgrnam_r, NULL)
NS_NIS_CB(_nis_getgrnam_r, NULL)
NS_COMPAT_CB(__grbad_compat, "compat")
NS_NULL_CB
};
_DIAGASSERT(retval != NULL);
_DIAGASSERT(grp != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(state != NULL);
/* name is NULL to indicate searching for gid */
*retval = 0;
if (state->fp == NULL) { /* only start if file not open yet */
rv = __grstart_compat(state);
if (rv != NS_SUCCESS)
goto compatgrscan_out;
}
rv = NS_NOTFOUND;
for (;;) { /* loop through file */
if (state->name != NULL) {
/* processing compat entry */
int crv, cretval;
struct group cgrp, *cgrpres;
if (state->name[0]) { /* specific +group: */
crv = nsdispatch(NULL, compatnamdtab,
NSDB_GROUP_COMPAT, "getgrnam_r",
__nsdefaultnis,
&cretval, state->name,
&cgrp, filebuf, sizeof(filebuf), &cgrpres);
free(state->name); /* (only check 1 grp) */
state->name = NULL;
} else if (!search) { /* any group */
if (searchfunc) {
crv = searchfunc(searchcookie,
&cgrpres);
} else {
crv = nsdispatch(NULL, compatentdtab,
NSDB_GROUP_COMPAT, "getgrent_r",
__nsdefaultnis,
&cretval, &cgrp, filebuf,
sizeof(filebuf), &cgrpres);
}
} else if (name) { /* specific group */
crv = nsdispatch(NULL, compatnamdtab,
NSDB_GROUP_COMPAT, "getgrnam_r",
__nsdefaultnis,
&cretval, name,
&cgrp, filebuf, sizeof(filebuf), &cgrpres);
} else { /* specific gid */
crv = nsdispatch(NULL, compatgiddtab,
NSDB_GROUP_COMPAT, "getgrgid_r",
__nsdefaultnis,
&cretval, gid,
&cgrp, filebuf, sizeof(filebuf), &cgrpres);
}
if (crv != NS_SUCCESS) { /* not found */
free(state->name);
state->name = NULL;
continue; /* try next line */
}
if (!_gr_copy(cgrpres, grp, buffer, buflen)) {
rv = NS_UNAVAIL;
break;
}
goto compatgrscan_cmpgrp; /* skip to grp test */
}
/* get next file line */
if (fgets(filebuf, (int)sizeof(filebuf), state->fp) == NULL)
break;
ep = strchr(filebuf, '\n');
if (ep == NULL) { /* skip lines that are too big */
int ch;
while ((ch = getc(state->fp)) != '\n' && ch != EOF)
continue;
continue;
}
*ep = '\0'; /* clear trailing \n */
if (filebuf[0] == '+') { /* parse compat line */
if (state->name)
free(state->name);
state->name = NULL;
switch(filebuf[1]) {
case ':':
case '\0':
state->name = strdup("");
break;
default:
ep = strchr(filebuf + 1, ':');
if (ep == NULL)
break;
*ep = '\0';
state->name = strdup(filebuf + 1);
break;
}
if (state->name == NULL) {
rv = NS_UNAVAIL;
break;
}
continue;
}
/* validate line */
if (! _gr_parse(filebuf, grp, buffer, buflen)) {
continue; /* skip bad lines */
}
compatgrscan_cmpgrp:
if (! search) { /* just want this one */
rv = NS_SUCCESS;
break;
}
/* want specific */
if ((name && strcmp(name, grp->gr_name) == 0) ||
(!name && gid == grp->gr_gid)) {
rv = NS_SUCCESS;
break;
}
}
compatgrscan_out:
if (rv != NS_SUCCESS && rv != NS_NOTFOUND)
*retval = errno;
return rv;
}
struct hostent *
getipnodebyaddr(const void *src, size_t len, int af, int *errp)
{
struct hostent *hp;
int rval;
#ifdef INET6
struct in6_addr addrbuf;
#else
struct in_addr addrbuf;
#endif
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_ghbyaddr, NULL)
{ NSSRC_DNS, _dns_ghbyaddr, NULL },
NS_NIS_CB(_nis_ghbyaddr, NULL)
#ifdef ICMPNL
{ NSSRC_ICMP, _icmp_ghbyaddr, NULL },
#endif
{ 0 }
};
*errp = HOST_NOT_FOUND;
switch (af) {
case AF_INET:
if (len != sizeof(struct in_addr)) {
*errp = NO_RECOVERY;
return NULL;
}
if ((long)src & ~(sizeof(struct in_addr) - 1)) {
memcpy(&addrbuf, src, len);
src = &addrbuf;
}
if (((struct in_addr *)src)->s_addr == 0)
return NULL;
break;
#ifdef INET6
case AF_INET6:
if (len != sizeof(struct in6_addr)) {
*errp = NO_RECOVERY;
return NULL;
}
if ((long)src & ~(sizeof(struct in6_addr) / 2 - 1)) { /*XXX*/
memcpy(&addrbuf, src, len);
src = &addrbuf;
}
if (IN6_IS_ADDR_UNSPECIFIED((struct in6_addr *)src))
return NULL;
if (IN6_IS_ADDR_V4MAPPED((struct in6_addr *)src)
|| IN6_IS_ADDR_V4COMPAT((struct in6_addr *)src)) {
src = (char *)src +
(sizeof(struct in6_addr) - sizeof(struct in_addr));
af = AF_INET;
len = sizeof(struct in_addr);
}
break;
#endif
default:
*errp = NO_RECOVERY;
return NULL;
}
rval = nsdispatch(&hp, dtab, NSDB_HOSTS, "ghbyaddr", default_src,
src, len, af, errp);
return (rval == NS_SUCCESS) ? hp : NULL;
}
