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authorJakub Hrozek <jhrozek@redhat.com>2012-10-11 20:18:18 +0200
committerJakub Hrozek <jhrozek@redhat.com>2012-10-12 10:11:16 +0200
commit8445e39d8e154523b1c39ce701830dacef51d1e9 (patch)
tree941d4a090e7bcfdf31e810225e27f098d8f9bd9f /src/sss_client
parente7a24374d97e1d1c32d3e18561a20e8c5e6319ec (diff)
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PAM: fix handling the client fd in pam destructor
* Protect the fd with a mutex when closing * Set it to a safe value after closing
Diffstat (limited to 'src/sss_client')
-rw-r--r--src/sss_client/common.c17
-rw-r--r--src/sss_client/pam_sss.c11
-rw-r--r--src/sss_client/sss_cli.h8
3 files changed, 18 insertions, 18 deletions
diff --git a/src/sss_client/common.c b/src/sss_client/common.c
index a4d523cdf..7cfa3e0ef 100644
--- a/src/sss_client/common.c
+++ b/src/sss_client/common.c
@@ -795,11 +795,6 @@ errno_t check_server_cred(int sockfd)
return 0;
}
-int *sss_pam_get_socket(void)
-{
- return &sss_cli_sd;
-}
-
int sss_pam_make_request(enum sss_cli_command cmd,
struct sss_cli_req_data *rd,
uint8_t **repbuf, size_t *replen,
@@ -879,6 +874,18 @@ out:
return ret;
}
+void sss_pam_close_fd(void)
+{
+ sss_pam_lock();
+
+ if (sss_cli_sd != -1) {
+ close(sss_cli_sd);
+ sss_cli_sd = -1;
+ }
+
+ sss_pam_unlock();
+}
+
int sss_sudo_make_request(enum sss_cli_command cmd,
struct sss_cli_req_data *rd,
uint8_t **repbuf, size_t *replen,
diff --git a/src/sss_client/pam_sss.c b/src/sss_client/pam_sss.c
index 90d4c0a33..3734c8f08 100644
--- a/src/sss_client/pam_sss.c
+++ b/src/sss_client/pam_sss.c
@@ -125,20 +125,13 @@ static void free_exp_data(pam_handle_t *pamh, void *ptr, int err)
static void close_fd(pam_handle_t *pamh, void *ptr, int err)
{
- int fd = *((int *) ptr);
-
if (err & PAM_DATA_REPLACE) {
/* Nothing to do */
return;
}
- if (fd == -1) {
- /* fd not yet initialized */
- return;
- }
-
D(("Closing the fd"));
- close(fd);
+ sss_pam_close_fd();
}
static size_t add_authtok_item(enum pam_item_type type,
@@ -1098,7 +1091,7 @@ static int send_and_receive(pam_handle_t *pamh, struct pam_items *pi,
errnop = 0;
ret = sss_pam_make_request(task, &rd, &repbuf, &replen, &errnop);
- sret = pam_set_data(pamh, FD_DESTRUCTOR, sss_pam_get_socket(), close_fd);
+ sret = pam_set_data(pamh, FD_DESTRUCTOR, NULL, close_fd);
if (sret != PAM_SUCCESS) {
D(("pam_set_data failed, client might leaks fds"));
}
diff --git a/src/sss_client/sss_cli.h b/src/sss_client/sss_cli.h
index f3cb44adb..372bcee59 100644
--- a/src/sss_client/sss_cli.h
+++ b/src/sss_client/sss_cli.h
@@ -478,10 +478,10 @@ enum nss_status sss_nss_make_request(enum sss_cli_command cmd,
int *errnop);
int sss_pam_make_request(enum sss_cli_command cmd,
- struct sss_cli_req_data *rd,
- uint8_t **repbuf, size_t *replen,
- int *errnop);
-int *sss_pam_get_socket(void);
+ struct sss_cli_req_data *rd,
+ uint8_t **repbuf, size_t *replen,
+ int *errnop);
+void sss_pam_close_fd(void);
int sss_pac_make_request(enum sss_cli_command cmd,
struct sss_cli_req_data *rd,