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authorSumit Bose <sbose@redhat.com>2010-10-07 13:15:52 +0200
committerStephen Gallagher <sgallagh@redhat.com>2010-10-13 09:49:38 -0400
commit60dceaee2014822717a3f22e1b65b228e20cc5f0 (patch)
treee09cc2489670ce17f20d618ca6be3d48999c0044
parent619bd403265ce0880989ba6f8324b010949851bc (diff)
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Avoid a global variable in netgroup client.
The structure which is used to store the result also provides elements to store a context for the netgroup enumeration call.
-rw-r--r--src/sss_client/nss_compat.h2
-rw-r--r--src/sss_client/nss_netgroup.c62
2 files changed, 26 insertions, 38 deletions
diff --git a/src/sss_client/nss_compat.h b/src/sss_client/nss_compat.h
index 37871c23..97fbfebb 100644
--- a/src/sss_client/nss_compat.h
+++ b/src/sss_client/nss_compat.h
@@ -57,7 +57,7 @@ struct __netgrent
{
char *cursor;
unsigned long int position;
- } insertedname; /* added name to union to avoid warning */
+ } idx; /* added name to union to avoid warning */
int first;
struct name_list *known_groups;
struct name_list *needed_groups;
diff --git a/src/sss_client/nss_netgroup.c b/src/sss_client/nss_netgroup.c
index 86178544..158e37b4 100644
--- a/src/sss_client/nss_netgroup.c
+++ b/src/sss_client/nss_netgroup.c
@@ -35,12 +35,12 @@
#define MAX_NETGR_NAME_LENGTH 2048
-static struct sss_nss_getnetgrent_data {
- char *name;
- size_t len;
- size_t ptr;
- uint8_t *data;
-} sss_nss_getnetgrent_data;
+#define CLEAR_NETGRENT_DATA(netgrent) do { \
+ free(netgrent->data); \
+ netgrent->data = NULL; \
+ netgrent->idx.position = 0; \
+ netgrent->data_size = 0; \
+} while (0);
/*
* Replies:
@@ -61,19 +61,6 @@ struct sss_nss_netgr_rep {
size_t buflen;
};
-static void sss_nss_getnetgrent_data_clean(void) {
- if (sss_nss_getnetgrent_data.name != NULL) {
- free(sss_nss_getnetgrent_data.name);
- sss_nss_getnetgrent_data.name = NULL;
- }
- if (sss_nss_getnetgrent_data.data != NULL) {
- free(sss_nss_getnetgrent_data.data);
- sss_nss_getnetgrent_data.data = NULL;
- }
- sss_nss_getnetgrent_data.len = 0;
- sss_nss_getnetgrent_data.ptr = 0;
-}
-
static int sss_nss_getnetgr_readrep(struct sss_nss_netgr_rep *pr,
uint8_t *buf, size_t *len)
{
@@ -203,28 +190,30 @@ enum nss_status _nss_sss_setnetgrent(const char *netgroup,
enum nss_status nret;
struct sss_cli_req_data rd;
int errnop;
+ char *name;
size_t name_len;
errno_t ret;
if (!netgroup) return NSS_STATUS_NOTFOUND;
/* make sure we do not have leftovers, and release memory */
- sss_nss_getnetgrent_data_clean();
+ CLEAR_NETGRENT_DATA(result);
ret = sss_strnlen(netgroup, MAX_NETGR_NAME_LENGTH, &name_len);
if (ret != 0) return NSS_STATUS_NOTFOUND;
- sss_nss_getnetgrent_data.name = malloc(sizeof(char)*name_len + 1);
- if (sss_nss_getnetgrent_data.name == NULL) {
+ name = malloc(sizeof(char)*name_len + 1);
+ if (name == NULL) {
return NSS_STATUS_TRYAGAIN;
}
- strncpy(sss_nss_getnetgrent_data.name, netgroup, name_len + 1);
+ strncpy(name, netgroup, name_len + 1);
- rd.data = sss_nss_getnetgrent_data.name;
+ rd.data = name;
rd.len = name_len + 1;
nret = sss_nss_make_request(SSS_NSS_SETNETGRENT, &rd,
&repbuf, &replen, &errnop);
+ free(name);
if (nret != NSS_STATUS_SUCCESS) {
errno = errnop;
return nret;
@@ -236,6 +225,7 @@ enum nss_status _nss_sss_setnetgrent(const char *netgroup,
return NSS_STATUS_NOTFOUND;
}
+ free(repbuf);
return NSS_STATUS_SUCCESS;
}
@@ -257,13 +247,11 @@ enum nss_status _nss_sss_getnetgrent_r(struct __netgrent *result,
/* If we're already processing result data, continue to
* return it.
*/
- if (sss_nss_getnetgrent_data.data != NULL &&
- sss_nss_getnetgrent_data.ptr < sss_nss_getnetgrent_data.len) {
+ if (result->data != NULL &&
+ result->idx.position < result->data_size) {
- repbuf = (uint8_t *)sss_nss_getnetgrent_data.data +
- sss_nss_getnetgrent_data.ptr;
- replen = sss_nss_getnetgrent_data.len -
- sss_nss_getnetgrent_data.ptr;
+ repbuf = (uint8_t *) result->data + result->idx.position;
+ replen = result->data_size - result->idx.position;
netgrrep.result = result;
netgrrep.buffer = buffer;
@@ -275,13 +263,13 @@ enum nss_status _nss_sss_getnetgrent_r(struct __netgrent *result,
return NSS_STATUS_TRYAGAIN;
}
- sss_nss_getnetgrent_data.ptr = sss_nss_getnetgrent_data.len - replen;
+ result->idx.position = result->data_size - replen;
return NSS_STATUS_SUCCESS;
}
/* Release memory, if any */
- sss_nss_getnetgrent_data_clean();
+ CLEAR_NETGRENT_DATA(result);
/* retrieve no more than SSS_NSS_MAX_ENTRIES at a time */
num_entries = SSS_NSS_MAX_ENTRIES;
@@ -300,22 +288,22 @@ enum nss_status _nss_sss_getnetgrent_r(struct __netgrent *result,
return NSS_STATUS_RETURN;
}
- sss_nss_getnetgrent_data.data = repbuf;
- sss_nss_getnetgrent_data.len = replen;
+ result->data = (char *) repbuf;
+ result->data_size = replen;
/* skip metadata fields */
- sss_nss_getnetgrent_data.ptr = NETGR_METADATA_COUNT;
+ result->idx.position = NETGR_METADATA_COUNT;
/* call again ourselves, this will return the first result */
return _nss_sss_getnetgrent_r(result, buffer, buflen, errnop);
}
-enum nss_status _nss_sss_endnetgrent(void)
+enum nss_status _nss_sss_endnetgrent(struct __netgrent *result)
{
enum nss_status nret;
int errnop;
/* make sure we do not have leftovers, and release memory */
- sss_nss_getnetgrent_data_clean();
+ CLEAR_NETGRENT_DATA(result);
nret = sss_nss_make_request(SSS_NSS_ENDNETGRENT,
NULL, NULL, NULL, &errnop);