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-rw-r--r--nis/nss_nis/nis-service.c254
1 files changed, 136 insertions, 118 deletions
diff --git a/nis/nss_nis/nis-service.c b/nis/nss_nis/nis-service.c
index 59a598f296..1e879d04e3 100644
--- a/nis/nss_nis/nis-service.c
+++ b/nis/nss_nis/nis-service.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2004, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996.
@@ -27,7 +27,6 @@
#include <rpcsvc/ypclnt.h>
#include "nss-nis.h"
-#include <libnsl.h>
/* Get the declaration of the parser function. */
@@ -37,7 +36,20 @@
__libc_lock_define_initialized (static, lock)
-static intern_t intern;
+struct response_t
+{
+ struct response_t *next;
+ char val[0];
+};
+
+struct intern_t
+{
+ struct response_t *start;
+ struct response_t *next;
+};
+typedef struct intern_t intern_t;
+
+static intern_t intern = { NULL, NULL };
struct search_t
{
@@ -52,31 +64,63 @@ struct search_t
};
static int
+saveit (int instatus, char *inkey, int inkeylen, char *inval,
+ int invallen, char *indata)
+{
+ intern_t *intern = (intern_t *) indata;
+
+ if (instatus != YP_TRUE)
+ return 1;
+
+ if (inkey && inkeylen > 0 && inval && invallen > 0)
+ {
+ struct response_t *newp = malloc (sizeof (struct response_t)
+ + invallen + 1);
+ if (newp == NULL)
+ return 1; /* We have no error code for out of memory */
+
+ if (intern->start == NULL)
+ intern->start = newp;
+ else
+ intern->next->next = newp;
+ intern->next = newp;
+
+ newp->next = NULL;
+ *((char *) mempcpy (newp->val, inval, invallen)) = '\0';
+ }
+
+ return 0;
+}
+
+static int
dosearch (int instatus, char *inkey, int inkeylen, char *inval,
int invallen, char *indata)
{
struct search_t *req = (struct search_t *) indata;
- if (__builtin_expect (instatus != YP_TRUE, 0))
+ if (instatus != YP_TRUE)
return 1;
if (inkey && inkeylen > 0 && inval && invallen > 0)
{
- if (__builtin_expect ((size_t) (invallen + 1) > req->buflen, 0))
+ struct parser_data *pdata = (void *) req->buffer;
+ int parse_res;
+ char *p;
+
+ if ((size_t) (invallen + 1) > req->buflen)
{
*req->errnop = ERANGE;
req->status = NSS_STATUS_TRYAGAIN;
return 1;
}
- char *p = strncpy (req->buffer, inval, invallen);
+ p = strncpy (req->buffer, inval, invallen);
req->buffer[invallen] = '\0';
while (isspace (*p))
++p;
- int parse_res = _nss_files_parse_servent (p, req->serv,
- (void *) req->buffer,
- req->buflen, req->errnop);
+ parse_res = _nss_files_parse_servent (p, req->serv, pdata, req->buflen,
+ req->errnop);
if (parse_res == -1)
{
req->status = NSS_STATUS_TRYAGAIN;
@@ -110,35 +154,35 @@ dosearch (int instatus, char *inkey, int inkeylen, char *inval,
return 0;
}
-static void
-internal_nis_endservent (void)
+static enum nss_status
+internal_nis_endservent (intern_t * intern)
{
- struct response_t *curr = intern.next;
-
- while (curr != NULL)
+ while (intern->start != NULL)
{
- struct response_t *last = curr;
- curr = curr->next;
- free (last);
+ intern->next = intern->start;
+ intern->start = intern->start->next;
+ free (intern->next);
}
- intern.next = intern.start = NULL;
+ return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nis_endservent (void)
{
+ enum nss_status status;
+
__libc_lock_lock (lock);
- internal_nis_endservent ();
+ status = internal_nis_endservent (&intern);
__libc_lock_unlock (lock);
- return NSS_STATUS_SUCCESS;
+ return status;
}
static enum nss_status
-internal_nis_setservent (void)
+internal_nis_setservent (intern_t *intern)
{
char *domainname;
struct ypall_callback ypcb;
@@ -147,18 +191,12 @@ internal_nis_setservent (void)
if (yp_get_default_domain (&domainname))
return NSS_STATUS_UNAVAIL;
- internal_nis_endservent ();
+ (void) internal_nis_endservent (intern);
- ypcb.foreach = _nis_saveit;
- ypcb.data = (char *) &intern;
+ ypcb.foreach = saveit;
+ ypcb.data = (char *) intern;
status = yperr2nss (yp_all (domainname, "services.byname", &ypcb));
-
- /* Mark the last buffer as full. */
- if (intern.next != NULL)
- intern.next->size = intern.offset;
-
- intern.next = intern.start;
- intern.offset = 0;
+ intern->next = intern->start;
return status;
}
@@ -170,7 +208,7 @@ _nss_nis_setservent (int stayopen)
__libc_lock_lock (lock);
- status = internal_nis_setservent ();
+ status = internal_nis_setservent (&intern);
__libc_lock_unlock (lock);
@@ -179,60 +217,29 @@ _nss_nis_setservent (int stayopen)
static enum nss_status
internal_nis_getservent_r (struct servent *serv, char *buffer,
- size_t buflen, int *errnop)
+ size_t buflen, int *errnop, intern_t *data)
{
struct parser_data *pdata = (void *) buffer;
int parse_res;
char *p;
- if (intern.start == NULL)
- internal_nis_setservent ();
+ if (data->start == NULL)
+ internal_nis_setservent (data);
- if (intern.next == NULL)
- /* Not one entry in the map. */
- return NSS_STATUS_NOTFOUND;
-
- /* Get the next entry until we found a correct one. */
+ /* Get the next entry until we found a correct one. */
do
{
- struct response_t *bucket = intern.next;
+ if (data->next == NULL)
+ return NSS_STATUS_NOTFOUND;
- if (__builtin_expect (intern.offset >= bucket->size, 0))
- {
- if (bucket->next == NULL)
- return NSS_STATUS_NOTFOUND;
-
- /* We look at all the content in the current bucket. Go on
- to the next. */
- bucket = intern.next = bucket->next;
- intern.offset = 0;
- }
-
- for (p = &bucket->mem[intern.offset]; isspace (*p); ++p)
- ++intern.offset;
-
- size_t len = strlen (p) + 1;
- if (__builtin_expect (len > buflen, 0))
- {
- *errnop = ERANGE;
- return NSS_STATUS_TRYAGAIN;
- }
-
- /* We unfortunately have to copy the data in the user-provided
- buffer because that buffer might be around for a very long
- time and the servent structure must remain valid. If we would
- rely on the BUCKET memory the next 'setservent' or 'endservent'
- call would destroy it.
-
- The important thing is that it is a single NUL-terminated
- string. This is what the parsing routine expects. */
- p = memcpy (buffer, &bucket->mem[intern.offset], len);
+ p = strncpy (buffer, data->next->val, buflen);
+ while (isspace (*p))
+ ++p;
parse_res = _nss_files_parse_servent (p, serv, pdata, buflen, errnop);
- if (__builtin_expect (parse_res == -1, 0))
+ if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
-
- intern.offset += len;
+ data->next = data->next->next;
}
while (!parse_res);
@@ -247,7 +254,7 @@ _nss_nis_getservent_r (struct servent *serv, char *buffer, size_t buflen,
__libc_lock_lock (lock);
- status = internal_nis_getservent_r (serv, buffer, buflen, errnop);
+ status = internal_nis_getservent_r (serv, buffer, buflen, errnop, &intern);
__libc_lock_unlock (lock);
@@ -259,55 +266,60 @@ _nss_nis_getservbyname_r (const char *name, const char *protocol,
struct servent *serv, char *buffer, size_t buflen,
int *errnop)
{
+ enum nss_status status;
+ char *domain;
+
if (name == NULL)
{
*errnop = EINVAL;
return NSS_STATUS_UNAVAIL;
}
- char *domain;
- if (__builtin_expect (yp_get_default_domain (&domain), 0))
+ if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
/* If the protocol is given, we could try if our NIS server knows
about services.byservicename map. If yes, we only need one query. */
- size_t keylen = strlen (name) + (protocol ? 1 + strlen (protocol) : 0);
- char key[keylen + 1];
+ char key[strlen (name) + (protocol ? strlen (protocol) : 0) + 2];
+ char *cp, *result;
+ size_t keylen, len;
+ int int_len;
/* key is: "name/proto" */
- char *cp = stpcpy (key, name);
- if (protocol != NULL)
+ cp = stpcpy (key, name);
+ if (protocol)
{
*cp++ = '/';
strcpy (cp, protocol);
}
-
- char *result;
- int int_len;
- int status = yp_match (domain, "services.byservicename", key,
- keylen, &result, &int_len);
- size_t len = int_len;
+ keylen = strlen (key);
+ status = yperr2nss (yp_match (domain, "services.byservicename", key,
+ keylen, &result, &int_len));
+ len = int_len;
/* If we found the key, it's ok and parse the result. If not,
fall through and parse the complete table. */
- if (__builtin_expect (status == YPERR_SUCCESS, 1))
+ if (status == NSS_STATUS_SUCCESS)
{
- if (__builtin_expect ((size_t) (len + 1) > buflen, 0))
+ struct parser_data *pdata = (void *) buffer;
+ int parse_res;
+ char *p;
+
+ if ((size_t) (len + 1) > buflen)
{
free (result);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
- char *p = strncpy (buffer, result, len);
+ p = strncpy (buffer, result, len);
buffer[len] = '\0';
while (isspace (*p))
++p;
free (result);
-
- int parse_res = _nss_files_parse_servent (p, serv, (void *) buffer,
- buflen, errnop);
- if (__builtin_expect (parse_res < 0, 0))
+ parse_res = _nss_files_parse_servent (p, serv, pdata,
+ buflen, errnop);
+ if (parse_res < 0)
{
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
@@ -319,8 +331,8 @@ _nss_nis_getservbyname_r (const char *name, const char *protocol,
}
/* Check if it is safe to rely on services.byservicename. */
- if (_nsl_default_nss () & NSS_FLAG_SERVICES_AUTHORITATIVE)
- return yperr2nss (status);
+ if (_nis_default_nss () & NSS_FLAG_SERVICES_AUTHORITATIVE)
+ return status;
struct ypall_callback ypcb;
struct search_t req;
@@ -335,10 +347,10 @@ _nss_nis_getservbyname_r (const char *name, const char *protocol,
req.buflen = buflen;
req.errnop = errnop;
req.status = NSS_STATUS_NOTFOUND;
- status = yp_all (domain, "services.byname", &ypcb);
+ status = yperr2nss (yp_all (domain, "services.byname", &ypcb));
- if (__builtin_expect (status != YPERR_SUCCESS, 0))
- return yperr2nss (status);
+ if (status != NSS_STATUS_SUCCESS)
+ return status;
return req.status;
}
@@ -348,8 +360,10 @@ _nss_nis_getservbyport_r (int port, const char *protocol,
struct servent *serv, char *buffer,
size_t buflen, int *errnop)
{
+ enum nss_status status;
char *domain;
- if (__builtin_expect (yp_get_default_domain (&domain), 0))
+
+ if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
/* If the protocol is given, we only need one query.
@@ -358,44 +372,48 @@ _nss_nis_getservbyport_r (int port, const char *protocol,
const char *proto = protocol != NULL ? protocol : "tcp";
do
{
- /* key is: "port/proto" */
char key[sizeof (int) * 3 + strlen (proto) + 2];
- size_t keylen = snprintf (key, sizeof (key), "%d/%s", ntohs (port),
- proto);
-
char *result;
+ size_t keylen, len;
int int_len;
- int status = yp_match (domain, "services.byname", key, keylen, &result,
- &int_len);
- size_t len = int_len;
+
+ /* key is: "port/proto" */
+ keylen = snprintf (key, sizeof (key), "%d/%s", ntohs (port), proto);
+ status = yperr2nss (yp_match (domain, "services.byname", key,
+ keylen, &result, &int_len));
+ len = int_len;
/* If we found the key, it's ok and parse the result. If not,
fall through and parse the complete table. */
- if (__builtin_expect (status == YPERR_SUCCESS, 1))
+ if (status == NSS_STATUS_SUCCESS)
{
- if (__builtin_expect ((size_t) (len + 1) > buflen, 0))
+ struct parser_data *pdata = (void *) buffer;
+ int parse_res;
+ char *p;
+
+ if ((size_t) (len + 1) > buflen)
{
free (result);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
- char *p = strncpy (buffer, result, len);
+ p = strncpy (buffer, result, len);
buffer[len] = '\0';
while (isspace (*p))
++p;
free (result);
- int parse_res = _nss_files_parse_servent (p, serv, (void *) buffer,
- buflen, errnop);
- if (__builtin_expect (parse_res < 0, 0))
+ parse_res = _nss_files_parse_servent (p, serv, pdata,
+ buflen, errnop);
+ if (parse_res < 0)
{
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
else
return NSS_STATUS_NOTFOUND;
}
-
- return NSS_STATUS_SUCCESS;
+ else
+ return NSS_STATUS_SUCCESS;
}
}
while (protocol == NULL && (proto[0] == 't' ? (proto = "udp") : NULL));
@@ -416,10 +434,10 @@ _nss_nis_getservbyport_r (int port, const char *protocol,
req.buflen = buflen;
req.errnop = errnop;
req.status = NSS_STATUS_NOTFOUND;
- int status = yp_all (domain, "services.byname", &ypcb);
+ status = yperr2nss (yp_all (domain, "services.byname", &ypcb));
- if (__builtin_expect (status != YPERR_SUCCESS, 0))
- return yperr2nss (status);
+ if (status != NSS_STATUS_SUCCESS)
+ return status;
return req.status;
}