276 lines
9.5 KiB
C++
276 lines
9.5 KiB
C++
/* pwdgrp.h
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Stuff common to pwd and grp handling.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#pragma once
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#include "sync.h"
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#include "ldap.h"
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#include "miscfuncs.h"
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#include "userinfo.h"
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/* These functions are needed to allow searching and walking through
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the passwd and group lists */
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extern struct passwd *internal_getpwsid (cygpsid &, cyg_ldap * = NULL);
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extern struct passwd *internal_getpwsid_from_db (cygpsid &sid);
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extern struct passwd *internal_getpwnam (const char *, cyg_ldap * = NULL);
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extern struct passwd *internal_getpwuid (uid_t, cyg_ldap * = NULL);
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extern struct group *internal_getgrsid (cygpsid &, cyg_ldap * = NULL);
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extern struct group *internal_getgrsid_from_db (cygpsid &sid);
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extern struct group *internal_getgrgid (gid_t, cyg_ldap * = NULL);
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extern struct group *internal_getgrnam (const char *, cyg_ldap * = NULL);
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extern int internal_getgroups (int, gid_t *, cyg_ldap *);
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/* These functions are called from mkpasswd/mkgroup via cygwin_internal. */
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void *setpwent_filtered (int enums, PCWSTR enum_tdoms);
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void *getpwent_filtered (void *gr);
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void endpwent_filtered (void *gr);
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void *setgrent_filtered (int enums, PCWSTR enum_tdoms);
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void *getgrent_filtered (void *gr);
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void endgrent_filtered (void *gr);
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/* NOTE: The below sid members were cygsid's originally. Don't do that.
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cygsid's are pointer based. When adding new entries to the passwd or
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group caches, a crealloc call potenitally moves the entries and then
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the cygsid pointers point into neverneverland. */
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struct pg_pwd
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{
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struct passwd p;
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BYTE sid[SECURITY_MAX_SID_SIZE];
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size_t len;
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};
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struct pg_grp
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{
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struct group g;
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BYTE sid[SECURITY_MAX_SID_SIZE];
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size_t len;
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};
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class pwdgrp
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{
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friend class pg_ent;
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friend class pw_ent;
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friend class gr_ent;
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unsigned pwdgrp_buf_elem_size;
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void *pwdgrp_buf;
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bool (pwdgrp::*parse) ();
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UNICODE_STRING path;
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OBJECT_ATTRIBUTES attr;
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LARGE_INTEGER last_modified;
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char *lptr;
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ULONG curr_lines;
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ULONG max_lines;
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static muto pglock;
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bool parse_passwd ();
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bool parse_group ();
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char *add_line (char *);
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char *raw_ptr () const {return lptr;}
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char *next_str (char);
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bool next_num (unsigned long&);
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bool next_num (unsigned int& i)
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{
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unsigned long x;
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bool res = next_num (x);
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i = (unsigned int) x;
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return res;
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}
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inline bool next_num (int& i)
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{
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unsigned long x;
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bool res = next_num (x);
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i = (int) x;
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return res;
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}
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void *add_account_post_fetch (char *line, bool lock);
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void *add_account_from_file (cygpsid &sid);
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void *add_account_from_file (const char *name);
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void *add_account_from_file (uint32_t id);
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void *add_account_from_windows (cygpsid &sid, cyg_ldap *pldap = NULL);
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void *add_account_from_windows (const char *name, cyg_ldap *pldap = NULL);
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void *add_account_from_windows (uint32_t id, cyg_ldap *pldap = NULL);
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void *add_account_from_cygserver (cygpsid &sid);
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void *add_account_from_cygserver (const char *name);
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void *add_account_from_cygserver (uint32_t id);
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bool construct_sid_from_name (cygsid &sid, wchar_t *name, wchar_t *sep);
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char *fetch_account_from_line (fetch_user_arg_t &arg, const char *line);
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char *fetch_account_from_file (fetch_user_arg_t &arg);
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char *fetch_account_from_windows (fetch_user_arg_t &arg,
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cyg_ldap *pldap = NULL);
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char *fetch_account_from_cygserver (fetch_user_arg_t &arg);
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public:
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ULONG cached_users () const { return curr_lines; }
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ULONG cached_groups () const { return curr_lines; }
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POBJECT_ATTRIBUTES file_attr () { return &attr; }
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bool check_file ();
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void init_pwd ();
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bool is_passwd () const { return pwdgrp_buf_elem_size == sizeof (pg_pwd); }
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pg_pwd *passwd () const { return (pg_pwd *) pwdgrp_buf; };
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struct passwd *add_user_from_cygserver (cygpsid &sid)
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{ return (struct passwd *) add_account_from_cygserver (sid); }
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struct passwd *add_user_from_cygserver (const char *name)
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{ return (struct passwd *) add_account_from_cygserver (name); }
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struct passwd *add_user_from_cygserver (uint32_t id)
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{ return (struct passwd *) add_account_from_cygserver (id); }
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struct passwd *add_user_from_file (cygpsid &sid)
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{ return (struct passwd *) add_account_from_file (sid); }
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struct passwd *add_user_from_file (const char *name)
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{ return (struct passwd *) add_account_from_file (name); }
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struct passwd *add_user_from_file (uint32_t id)
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{ return (struct passwd *) add_account_from_file (id); }
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struct passwd *add_user_from_windows (cygpsid &sid, cyg_ldap *pldap = NULL)
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{ return (struct passwd *) add_account_from_windows (sid, pldap); }
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struct passwd *add_user_from_windows (const char *name,
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cyg_ldap* pldap = NULL)
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{ return (struct passwd *) add_account_from_windows (name, pldap); }
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struct passwd *add_user_from_windows (uint32_t id, cyg_ldap *pldap = NULL)
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{ return (struct passwd *) add_account_from_windows (id, pldap); }
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struct passwd *find_user (cygpsid &sid);
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struct passwd *find_user (const char *name);
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struct passwd *find_user (uid_t uid);
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void init_grp ();
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bool is_group () const { return pwdgrp_buf_elem_size == sizeof (pg_grp); }
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pg_grp *group () const { return (pg_grp *) pwdgrp_buf; };
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struct group *add_group_from_cygserver (cygpsid &sid)
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{ return (struct group *) add_account_from_cygserver (sid); }
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struct group *add_group_from_cygserver (const char *name)
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{ return (struct group *) add_account_from_cygserver (name); }
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struct group *add_group_from_cygserver (uint32_t id)
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{ return (struct group *) add_account_from_cygserver (id); }
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struct group *add_group_from_file (cygpsid &sid)
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{ return (struct group *) add_account_from_file (sid); }
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struct group *add_group_from_file (const char *name)
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{ return (struct group *) add_account_from_file (name); }
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struct group *add_group_from_file (uint32_t id)
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{ return (struct group *) add_account_from_file (id); }
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struct group *add_group_from_windows (cygpsid &sid, cyg_ldap *pldap = NULL)
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{ return (struct group *) add_account_from_windows (sid, pldap); }
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struct group *add_group_from_windows (const char *name,
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cyg_ldap *pldap = NULL)
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{ return (struct group *) add_account_from_windows (name, pldap); }
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struct group *add_group_from_windows (uint32_t id, cyg_ldap *pldap = NULL)
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{ return (struct group *) add_account_from_windows (id, pldap); }
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struct group *add_group_from_windows (fetch_acc_t &full_acc,
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cyg_ldap *pldap = NULL);
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struct group *find_group (cygpsid &sid);
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struct group *find_group (const char *name);
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struct group *find_group (gid_t gid);
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};
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class pg_ent
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{
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protected:
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pwdgrp pg;
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bool group;
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pg_pwd pwd;
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pg_grp grp;
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NT_readline rl;
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cyg_ldap cldap;
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PCHAR buf;
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ULONG cnt;
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ULONG max;
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ULONG_PTR resume;
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int enums; /* ENUM_xxx values defined in sys/cygwin.h. */
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PCWSTR enum_tdoms;
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bool from_files;
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bool from_db;
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UNICODE_STRING dom;
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enum {
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rewound = 0,
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from_cache,
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from_file,
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from_builtin,
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from_local,
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from_sam,
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from_ad,
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finished
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} state;
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void clear_cache ();
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inline bool nss_db_enum_caches () const { return !!(enums & ENUM_CACHE); }
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inline bool nss_db_enum_files () const { return !!(enums & ENUM_FILES); }
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inline bool nss_db_enum_builtin () const { return !!(enums & ENUM_BUILTIN); }
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inline bool nss_db_enum_local () const { return !!(enums & ENUM_LOCAL); }
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inline bool nss_db_enum_primary () const { return !!(enums & ENUM_PRIMARY); }
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inline bool nss_db_enum_tdom (PWCHAR domain)
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{
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if (enums & ENUM_TDOMS_ALL)
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return true;
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if (!(enums & ENUM_TDOMS) || !enum_tdoms || !domain)
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return false;
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for (PCWSTR td = enum_tdoms; td && *td; td = wcschr (td, L'\0'))
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if (!wcscasecmp (td, domain))
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return true;
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return false;
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}
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virtual void *enumerate_caches () = 0;
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virtual void *enumerate_file ();
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virtual void *enumerate_builtin ();
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virtual void *enumerate_local () = 0;
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virtual void *enumerate_sam ();
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virtual void *enumerate_ad ();
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public:
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void setent (bool _group, int _enums = 0, PCWSTR _enum_tdoms = NULL);
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void *getent ();
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void endent (bool _group);
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};
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class pw_ent : public pg_ent
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{
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void *enumerate_caches ();
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void *enumerate_local ();
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public:
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inline void setpwent (int _enums = 0, PCWSTR _enum_tdoms = NULL)
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{ setent (false, _enums, _enum_tdoms); }
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struct passwd *getpwent ();
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inline void endpwent () { endent (false); }
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};
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class gr_ent : public pg_ent
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{
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void *enumerate_caches ();
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void *enumerate_local ();
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public:
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inline void setgrent (int _enums = 0, PCWSTR _enum_tdoms = NULL)
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{ setent (true, _enums, _enum_tdoms); }
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struct group *getgrent ();
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inline void endgrent () { endent (true); }
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};
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/* These inline methods have to be defined here so that pg_pwd and pg_grp
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are defined. */
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inline BOOL cygsid::getfrompw (const struct passwd *pw)
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{ return (*this = pw ? (PSID) ((pg_pwd *) pw)->sid : NO_SID) != NO_SID; }
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inline BOOL cygsid::getfromgr (const struct group *gr)
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{ return (*this = gr ? (PSID) ((pg_grp *) gr)->sid : NO_SID) != NO_SID; }
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/* Use these functions if you just need the PSID. */
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inline PSID sidfromuid (uid_t uid, cyg_ldap *pldap)
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{
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struct passwd *pw = internal_getpwuid (uid, pldap);
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if (pw)
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return (PSID) ((pg_pwd *) pw)->sid;
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return NO_SID;
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}
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inline PSID sidfromgid (gid_t gid, cyg_ldap *pldap)
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{
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struct group *gr = internal_getgrgid (gid, pldap);
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if (gr)
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return (PSID) ((pg_grp *) gr)->sid;
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return NO_SID;
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}
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