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Fix has_permission (bug #33644)

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This commit is contained in:
wbaumann
2013-08-15 17:22:24 +00:00
parent f7ea24cd4c
commit 06e1569677
2 changed files with 25 additions and 14 deletions
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35
src/cache.c
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@ -2278,28 +2278,35 @@ has_permission(const dav_node *node, uid_t uid, int how)
a_mode |= (how & W_OK) ? (S_IWUSR | S_IWGRP | S_IWOTH) : 0;
a_mode |= (how & X_OK) ? (S_IXUSR | S_IXGRP | S_IXOTH) : 0;
if (!(~node->mode & S_IRWXO & a_mode))
return 1;
if (node->uid == uid && !(~node->mode & S_IRWXU & a_mode))
if (node->uid == uid) {
if (~node->mode & S_IRWXU & a_mode)
return 0;
return 1;
}
struct passwd *pw = getpwuid(uid);
if (!pw)
return 0;
if (pw->pw_gid != node->gid) {
struct group *grp = getgrgid(node->gid);
if (!grp)
if (pw->pw_gid == node->gid) {
if (~node->mode & S_IRWXG & a_mode)
return 0;
char **members = grp->gr_mem;
while (*members && strcmp(*members, pw->pw_name) != 0)
members++;
if (!*members)
return 0;
}
if (!(~node->mode & S_IRWXG & a_mode))
return 1;
}
struct group *grp = getgrgid(node->gid);
if (!grp)
return 0;
char **members = grp->gr_mem;
while (*members && strcmp(*members, pw->pw_name) != 0)
members++;
if (*members) {
if (~node->mode & S_IRWXG & a_mode)
return 0;
return 1;
}
if (!(~node->mode & S_IRWXO & a_mode))
return 1;
return 0;
}