diff options
Diffstat (limited to 'winsup/cygwin/sec_helper.cc')
| -rw-r--r-- | winsup/cygwin/sec_helper.cc | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/winsup/cygwin/sec_helper.cc b/winsup/cygwin/sec_helper.cc index 59eba0887..e4f7419a7 100644 --- a/winsup/cygwin/sec_helper.cc +++ b/winsup/cygwin/sec_helper.cc @@ -186,6 +186,43 @@ cygsid::getfromgr (const struct __group32 *gr) return (*this = sp) != NULL; } +bool +get_sids_info (cygpsid owner_sid, cygpsid group_sid, __uid32_t * uidret, __gid32_t * gidret) +{ + struct passwd *pw; + struct __group32 *gr = NULL; + bool ret = false; + + if (group_sid == cygheap->user.groups.pgsid) + *gidret = myself->gid; + else if ((gr = internal_getgrsid (group_sid))) + *gidret = gr->gr_gid; + else + *gidret = ILLEGAL_GID; + + if (owner_sid == cygheap->user.sid ()) + { + *uidret = myself->uid; + if (*gidret == myself->gid) + ret = true; + else + ret = (internal_getgroups (0, NULL, &group_sid) > 0); + } + else if ((pw = internal_getpwsid (owner_sid))) + { + *uidret = pw->pw_uid; + if (gr || (*gidret != ILLEGAL_GID + && (gr = internal_getgrgid (*gidret)))) + for (int idx = 0; gr->gr_mem[idx]; ++idx) + if ((ret = strcasematch (pw->pw_name, gr->gr_mem[idx]))) + break; + } + else + *uidret = ILLEGAL_UID; + + return ret; +} + BOOL is_grp_member (__uid32_t uid, __gid32_t gid) { |