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-rw-r--r--src/external/platform.m412
-rw-r--r--src/responder/common/responder.h4
-rw-r--r--src/responder/common/responder_common.c137
-rw-r--r--src/sss_client/common.c126
4 files changed, 5 insertions, 274 deletions
diff --git a/src/external/platform.m4 b/src/external/platform.m4
index ee0093789..71b4f2c85 100644
--- a/src/external/platform.m4
+++ b/src/external/platform.m4
@@ -27,15 +27,3 @@ fi
AM_CONDITIONAL([HAVE_FEDORA], [test x"$osname" == xfedora])
AM_CONDITIONAL([HAVE_REDHAT], [test x"$osname" == xredhat])
AM_CONDITIONAL([HAVE_SUSE], [test x"$osname" == xsuse])
-
-AC_CHECK_MEMBERS([struct ucred.pid, struct ucred.uid, struct ucred.gid], , ,
- [[#define _GNU_SOURCE
- #include <sys/socket.h>]])
-
-if test x"$ac_cv_member_struct_ucred_pid" = xyes -a \
- x"$ac_cv_member_struct_ucred_uid" = xyes -a \
- x"$ac_cv_member_struct_ucred_gid" = xyes ; then
- AC_DEFINE([HAVE_UCRED], [1], [Define if struct ucred is available])
-else
- AC_MSG_WARN([struct ucred is not available])
-fi
diff --git a/src/responder/common/responder.h b/src/responder/common/responder.h
index 6391fcf7c..ea6ba5831 100644
--- a/src/responder/common/responder.h
+++ b/src/responder/common/responder.h
@@ -101,10 +101,6 @@ struct cli_ctx {
struct cli_request *creq;
struct cli_protocol_version *cli_protocol_version;
int priv;
- int creds_exchange_done;
- int client_uid;
- int client_gid;
- int client_pid;
};
struct sss_cmd_table {
diff --git a/src/responder/common/responder_common.c b/src/responder/common/responder_common.c
index 501c35205..ff27f62cf 100644
--- a/src/responder/common/responder_common.c
+++ b/src/responder/common/responder_common.c
@@ -19,9 +19,6 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-/* for struct ucred */
-#define _GNU_SOURCE
-
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
@@ -32,8 +29,7 @@
#include <string.h>
#include <sys/time.h>
#include <errno.h>
-#include <popt.h>
-#include "config.h"
+#include "popt.h"
#include "util/util.h"
#include "db/sysdb.h"
#include "confdb/confdb.h"
@@ -148,134 +144,12 @@ static void client_recv(struct cli_ctx *cctx)
return;
}
-static void cred_handler(struct cli_ctx *cctx, char action)
-{
-#ifdef HAVE_UCRED
- int ret;
- int fd;
- struct msghdr msg;
- struct iovec iov;
- struct cmsghdr *cmsg;
- struct ucred *creds;
- /* buf must be aligned on some architectures. */
- union ubuf {
- int align;
- char buf[CMSG_SPACE(sizeof(struct ucred))];
- } u;
- char dummy='s';
- int enable=1;
-
- if (cctx->creds_exchange_done != 0) {
- DEBUG(1, ("cred_handler called, but creds are already exchanged.\n"));
- goto failed;
- }
-
- fd = cctx->cfd;
-
- iov.iov_base = &dummy;
- iov.iov_len = 1;
-
- memset (&msg, 0, sizeof(msg));
-
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
-
- msg.msg_control = u.buf;
- msg.msg_controllen = sizeof(u.buf);
-
- switch (action) {
- case 'r':
- ret = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &enable, sizeof(int));
- if (ret == -1) {
- DEBUG(1, ("setsockopt failed: [%d][%s].\n", errno,
- strerror(errno)));
- goto failed;
- }
-
- ret = recvmsg(fd, &msg, 0);
- if (ret == -1) {
- DEBUG(1, ("recvmsg failed.[%d][%s]\n", errno, strerror(errno)));
- goto failed;
- }
-
- cmsg = CMSG_FIRSTHDR(&msg);
-
- if (cmsg->cmsg_level == SOL_SOCKET &&
- cmsg->cmsg_type == SCM_CREDENTIALS) {
- creds = (struct ucred *) CMSG_DATA(cmsg);
- DEBUG(1, ("creds: [%d][%d][%d]\n",creds->uid, creds->gid,
- creds->pid));
- cctx->client_uid = creds->uid;
- cctx->client_gid = creds->gid;
- cctx->client_pid = creds->pid;
- }
-
- TEVENT_FD_WRITEABLE(cctx->cfde);
-
- return;
- break;
- case 's':
- cmsg = CMSG_FIRSTHDR(&msg);
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_CREDENTIALS;
- cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred));
-
- creds = (struct ucred *) CMSG_DATA(cmsg);
-
- creds->uid = geteuid();
- creds->gid = getegid();
- creds->pid = getpid();
-
- msg.msg_controllen = cmsg->cmsg_len;
-
- ret = sendmsg(fd, &msg, 0);
- if (ret == -1) {
- DEBUG(1, ("sendmsg failed.[%d][%s]\n", errno, strerror(errno)));
- goto failed;
- }
- DEBUG(4, ("Send creds to the client succesfully.\n"));
- cctx->creds_exchange_done = 1;
-
- TEVENT_FD_NOT_WRITEABLE(cctx->cfde);
- return;
- default:
- DEBUG(1, ("Unknown action [%c].\n", action));
- goto failed;
- }
-
-failed:
- talloc_free(cctx);
- return;
-
-#else
-
- DEBUG(9, ("Credential exchange not available over socket, "
- "continuing without.\n"));
- cctx->creds_exchange_done = 1;
- return;
-
-#endif
-}
-
static void client_fd_handler(struct tevent_context *ev,
struct tevent_fd *fde,
uint16_t flags, void *ptr)
{
struct cli_ctx *cctx = talloc_get_type(ptr, struct cli_ctx);
- if (cctx->creds_exchange_done == 0) {
- if (flags & TEVENT_FD_READ) {
- cred_handler(cctx, 'r');
- return;
- }
- if (flags & TEVENT_FD_WRITE) {
- cred_handler(cctx, 's');
- return;
- }
- }
-
if (flags & TEVENT_FD_READ) {
client_recv(cctx);
return;
@@ -339,10 +213,6 @@ static void accept_priv_fd_handler(struct tevent_context *ev,
}
cctx->priv = 1;
- cctx->creds_exchange_done = 0;
- cctx->client_uid = -1;
- cctx->client_gid = -1;
- cctx->client_pid = -1;
cctx->cfde = tevent_add_fd(ev, cctx, cctx->cfd,
TEVENT_FD_READ, client_fd_handler, cctx);
@@ -395,11 +265,6 @@ static void accept_fd_handler(struct tevent_context *ev,
return;
}
- cctx->creds_exchange_done = 0;
- cctx->client_uid = -1;
- cctx->client_gid = -1;
- cctx->client_pid = -1;
-
cctx->cfde = tevent_add_fd(ev, cctx, cctx->cfd,
TEVENT_FD_READ, client_fd_handler, cctx);
if (!cctx->cfde) {
diff --git a/src/sss_client/common.c b/src/sss_client/common.c
index 07b9d0d95..6732c24fc 100644
--- a/src/sss_client/common.c
+++ b/src/sss_client/common.c
@@ -23,9 +23,6 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-/* for struct ucred */
-#define _GNU_SOURCE
-
#include <nss.h>
#include <security/pam_modules.h>
#include <errno.h>
@@ -39,8 +36,6 @@
#include <string.h>
#include <fcntl.h>
#include <poll.h>
-
-#include "config.h"
#include "sss_cli.h"
/* common functions */
@@ -55,108 +50,6 @@ static void sss_cli_close_socket(void)
}
}
-static int exchange_credentials(void)
-{
-#ifdef HAVE_UCRED
- int ret;
- struct msghdr msg;
- struct cmsghdr *cmsg;
- struct iovec iov;
- char dummy='a';
- /* buf must be aligned on some architectures. */
- union ubuf {
- int align;
- char buf[CMSG_SPACE(sizeof(struct ucred))];
- } u;
- struct ucred *creds;
- int enable = 1;
- struct pollfd pfd;
-
- ret = setsockopt(sss_cli_sd, SOL_SOCKET, SO_PASSCRED, &enable, sizeof(int));
- if (ret == -1) {
- return errno;
- }
-
- iov.iov_base = &dummy;
- iov.iov_len = 1;
-
- memset(&msg, 0, sizeof(msg));
-
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
-
- msg.msg_control = u.buf;
- msg.msg_controllen = sizeof(u.buf);
-
- cmsg = CMSG_FIRSTHDR(&msg);
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_CREDENTIALS;
- cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred));
-
- creds = (struct ucred *) CMSG_DATA(cmsg);
-
- creds->uid = geteuid();
- creds->gid = getegid();
- creds->pid = getpid();
-
- msg.msg_controllen = cmsg->cmsg_len;
-
- pfd.fd = sss_cli_sd;
- pfd.events = POLLOUT;
- ret = poll(&pfd, 1, SSS_CLI_SOCKET_TIMEOUT);
- if (ret != 1 || !(pfd.revents & POLLOUT) ) {
- return errno;
- }
-
- ret = sendmsg(sss_cli_sd, &msg, 0);
- if (ret == -1) {
- return errno;
- }
-
- memset(&msg, 0, sizeof(msg));
-
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
-
- msg.msg_control = u.buf;
- msg.msg_controllen = sizeof(u.buf);
-
- pfd.fd = sss_cli_sd;
- pfd.events = POLLIN;
- ret = poll(&pfd, 1, SSS_CLI_SOCKET_TIMEOUT);
-
- if (ret != 1 || !(pfd.revents & POLLIN) ) {
- return errno;
- }
-
- ret = recvmsg(sss_cli_sd, &msg, 0);
- if (ret == -1) {
- return errno;
- }
-
- cmsg = CMSG_FIRSTHDR(&msg);
-
- if (msg.msg_controllen != 0 && cmsg->cmsg_level == SOL_SOCKET &&
- cmsg->cmsg_type == SCM_CREDENTIALS) {
- creds = (struct ucred *) CMSG_DATA(cmsg);
- if (creds->uid != 0 || creds->gid!= 0) {
- return SSS_STATUS_UNAVAIL;
- }
- }
-
- return SSS_STATUS_SUCCESS;
-
-#else
-
- return SSS_STATUS_SUCCESS;
-
-#endif
-}
-
/* Requests:
*
* byte 0-3: 32bit unsigned with length (the complete packet length: 0 to X)
@@ -706,10 +599,9 @@ static enum sss_status sss_cli_check_socket(int *errnop, const char *socket_name
sss_cli_sd = mysd;
- if (exchange_credentials() == SSS_STATUS_SUCCESS)
- if (sss_nss_check_version(socket_name) == NSS_STATUS_SUCCESS) {
- return SSS_STATUS_SUCCESS;
- }
+ if (sss_nss_check_version(socket_name) == NSS_STATUS_SUCCESS) {
+ return SSS_STATUS_SUCCESS;
+ }
sss_cli_close_socket();
*errnop = EFAULT;
@@ -761,22 +653,12 @@ int sss_pam_make_request(enum sss_cli_command cmd,
if (ret != 0) return PAM_SERVICE_ERR;
if ( ! (stat_buf.st_uid == 0 &&
stat_buf.st_gid == 0 &&
- S_ISSOCK(stat_buf.st_mode) &&
- (stat_buf.st_mode & ~S_IFMT) == 0600 )) {
+ (stat_buf.st_mode&(S_IFSOCK|S_IRUSR|S_IWUSR)) == stat_buf.st_mode)) {
return PAM_SERVICE_ERR;
}
ret = sss_cli_check_socket(errnop, SSS_PAM_PRIV_SOCKET_NAME);
} else {
- ret = stat(SSS_PAM_SOCKET_NAME, &stat_buf);
- if (ret != 0) return PAM_SERVICE_ERR;
- if ( ! (stat_buf.st_uid == 0 &&
- stat_buf.st_gid == 0 &&
- S_ISSOCK(stat_buf.st_mode) &&
- (stat_buf.st_mode & ~S_IFMT) == 0666 )) {
- return PAM_SERVICE_ERR;
- }
-
ret = sss_cli_check_socket(errnop, SSS_PAM_SOCKET_NAME);
}
if (ret != NSS_STATUS_SUCCESS) {
generated by cgit (git 2.34.1) at 2024-11-12 09:10:25 +0000