cleanup

[openldap] / libraries / liblutil / getpeereid.c

diff --git a/libraries/liblutil/getpeereid.c b/libraries/liblutil/getpeereid.c
index 1bbe4aa9fbdfc94b6755c723f4ad712113120d03..258e7c5de9e9dc6eadc86eac5623b98d5d16fda9 100644 (file)
--- a/libraries/liblutil/getpeereid.c
+++ b/libraries/liblutil/getpeereid.c
@@ -40,6 +40,9 @@
 #include <sys/stat.h>
 #endif
 
+#include <stdlib.h>
+
+
 int getpeereid( int s, uid_t *euid, gid_t *egid )
 {
 #ifdef LDAP_PF_LOCAL
@@ -95,6 +98,48 @@ int getpeereid( int s, uid_t *euid, gid_t *egid )
                        return 0;
                }
        }
+#elif defined(SOCKCREDSIZE)
+       struct msghdr msg;
+       socklen_t crmsgsize;
+       void *crmsg;
+       struct cmsghdr *cmp;
+       struct sockcred *sc;
+
+       memset(&msg, 0, sizeof msg);
+       crmsgsize = CMSG_SPACE(SOCKCREDSIZE(NGROUPS));
+       if (crmsgsize == 0) goto sc_err;
+       crmsg = malloc(crmsgsize);
+       if (crmsg == NULL) goto sc_err;
+       memset(crmsg, 0, crmsgsize);
+       
+       msg.msg_control = crmsg;
+       msg.msg_controllen = crmsgsize;
+       
+       if (recvmsg(s, &msg, 0) < 0) {
+               free(crmsg);
+               goto sc_err;
+       }       
+
+       if (msg.msg_controllen == 0 || (msg.msg_flags & MSG_CTRUNC) != 0) {
+               free(crmsg);
+               goto sc_err;
+       }       
+       
+       cmp = CMSG_FIRSTHDR(&msg);
+       if (cmp->cmsg_level != SOL_SOCKET || cmp->cmsg_type != SCM_CREDS) {
+               printf("nocreds\n");
+               goto sc_err;
+       }       
+       
+       sc = (struct sockcred *)(void *)CMSG_DATA(cmp);
+       
+       *euid = sc->sc_euid;
+       *egid = sc->sc_egid;
+
+       free(crmsg);
+       return 0;
+
+sc_err:        
 #endif
 #endif /* LDAP_PF_LOCAL */