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authorJosé Bollo <jose.bollo@iot.bzh>2017-07-31 15:51:05 +0200
committerJosé Bollo <jose.bollo@iot.bzh>2017-08-02 13:53:38 +0200
commit3eefd4308167bac1f24c014618b1ba16cd055b63 (patch)
tree82a0618400833a780283108004121d62635bff13
parenta3acd11d38255758b87f2b00e5c2550b056e8672 (diff)
afb-cred: provide default values of credentials
Change-Id: I3764edf986c01ef30e21ee1ec7e2b0098eec9e9e Signed-off-by: José Bollo <jose.bollo@iot.bzh>
-rw-r--r--src/afb-cred.c26
1 files changed, 25 insertions, 1 deletions
diff --git a/src/afb-cred.c b/src/afb-cred.c
index 763c9265..87661f19 100644
--- a/src/afb-cred.c
+++ b/src/afb-cred.c
@@ -29,6 +29,19 @@
#define MAX_LABEL_LENGTH 1024
+#if !defined(DEFAULT_PEERSEC_LABEL)
+# define DEFAULT_PEERSEC_LABEL "NoLabel"
+#endif
+#if !defined(DEFAULT_PEERCRED_UID)
+# define DEFAULT_PEERCRED_UID 99 /* nobody */
+#endif
+#if !defined(DEFAULT_PEERCRED_GID)
+# define DEFAULT_PEERCRED_GID 99 /* nobody */
+#endif
+#if !defined(DEFAULT_PEERCRED_PID)
+# define DEFAULT_PEERCRED_PID 0 /* no process */
+#endif
+
static struct afb_cred *current;
static struct afb_cred *mkcred(uid_t uid, gid_t gid, pid_t pid, const char *label, size_t size)
@@ -90,7 +103,7 @@ static struct afb_cred *mkcurrent()
struct afb_cred *afb_cred_create(uid_t uid, gid_t gid, pid_t pid, const char *label)
{
- label = label ? : "";
+ label = label ? : DEFAULT_PEERSEC_LABEL;
return mkcred(uid, gid, pid, label, strlen(label));
}
@@ -105,18 +118,29 @@ struct afb_cred *afb_cred_create_for_socket(int fd)
length = (socklen_t)(sizeof ucred);
rc = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &length);
if (rc < 0 || length != (socklen_t)(sizeof ucred)) {
+#if !defined(NO_DEFAULT_PEERCRED)
if (!rc)
errno = EINVAL;
return NULL;
+#else
+ ucred.uid = DEFAULT_PEERCRED_UID;
+ ucred.gid = DEFAULT_PEERCRED_GID;
+ ucred.pid = DEFAULT_PEERCRED_PID;
+#endif
}
/* get the security label */
length = (socklen_t)(sizeof label);
rc = getsockopt(fd, SOL_SOCKET, SO_PEERSEC, label, &length);
if (rc < 0 || length > (socklen_t)(sizeof label)) {
+#if !defined(NO_DEFAULT_PEERSEC)
+ length = (socklen_t)strlen(DEFAULT_PEERSEC_LABEL);
+ strcpy (label, DEFAULT_PEERSEC_LABEL);
+#else
if (!rc)
errno = EINVAL;
return NULL;
+#endif
}
/* makes the result */