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-rw-r--r--winsup/cygwin/grp.cc508
1 files changed, 0 insertions, 508 deletions
diff --git a/winsup/cygwin/grp.cc b/winsup/cygwin/grp.cc
deleted file mode 100644
index 506208b..0000000
--- a/winsup/cygwin/grp.cc
+++ /dev/null
@@ -1,508 +0,0 @@
-/* grp.cc
-
- Copyright 1996, 1997, 1998, 2000, 2001, 2002 Red Hat, Inc.
-
- Original stubs by Jason Molenda of Cygnus Support, crash@cygnus.com
- First implementation by Gunther Ebert, gunther.ebert@ixos-leipzig.de
-
-This file is part of Cygwin.
-
-This software is a copyrighted work licensed under the terms of the
-Cygwin license. Please consult the file "CYGWIN_LICENSE" for
-details. */
-
-#include "winsup.h"
-#include <grp.h>
-#include <wininet.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include "pinfo.h"
-#include "security.h"
-#include "fhandler.h"
-#include "path.h"
-#include "dtable.h"
-#include "cygerrno.h"
-#include "cygheap.h"
-#include "pwdgrp.h"
-
-/* Read /etc/group only once for better performance. This is done
- on the first call that needs information from it. */
-
-static struct __group32 *group_buf; /* group contents in memory */
-static int curr_lines;
-static int max_lines;
-
-/* Position in the group cache */
-#ifdef _MT_SAFE
-#define grp_pos _reent_winsup ()->_grp_pos
-#else
-static int grp_pos = 0;
-#endif
-
-static pwdgrp_check group_state;
-
-static int
-parse_grp (struct __group32 &grp, char *line)
-{
- int len = strlen (line);
- if (line[--len] == '\r')
- line[len] = '\0';
-
- char *dp = strchr (line, ':');
-
- if (!dp)
- return 0;
-
- *dp++ = '\0';
- grp.gr_name = line;
-
- grp.gr_passwd = dp;
- dp = strchr (grp.gr_passwd, ':');
- if (dp)
- {
- *dp++ = '\0';
- if (!strlen (grp.gr_passwd))
- grp.gr_passwd = NULL;
-
- grp.gr_gid = strtol (dp, NULL, 10);
- dp = strchr (dp, ':');
- if (dp)
- {
- if (*++dp)
- {
- int i = 0;
- char *cp;
-
- for (cp = dp; (cp = strchr (cp, ',')) != NULL; ++cp)
- ++i;
- char **namearray = (char **) calloc (i + 2, sizeof (char *));
- if (namearray)
- {
- i = 0;
- for (cp = dp; (cp = strchr (dp, ',')) != NULL; dp = cp + 1)
- {
- *cp = '\0';
- namearray[i++] = dp;
- }
- namearray[i++] = dp;
- namearray[i] = NULL;
- }
- grp.gr_mem = namearray;
- }
- else
- grp.gr_mem = (char **) calloc (1, sizeof (char *));
- return 1;
- }
- }
- return 0;
-}
-
-/* Read one line from /etc/group into the group cache */
-static void
-add_grp_line (char *line)
-{
- if (curr_lines == max_lines)
- {
- max_lines += 10;
- group_buf = (struct __group32 *) realloc (group_buf, max_lines * sizeof (struct __group32));
- }
- if (parse_grp (group_buf[curr_lines], line))
- curr_lines++;
-}
-
-class group_lock
-{
- bool armed;
- static NO_COPY pthread_mutex_t mutex;
- public:
- group_lock (bool doit)
- {
- if (armed = doit)
- pthread_mutex_lock (&mutex);
- }
- ~group_lock ()
- {
- if (armed)
- pthread_mutex_unlock (&mutex);
- }
-};
-
-pthread_mutex_t NO_COPY group_lock::mutex = (pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER;
-
-/* Cygwin internal */
-/* Read in /etc/group and save contents in the group cache */
-/* This sets group_in_memory_p to 1 so functions in this file can
- tell that /etc/group has been read in */
-/* FIXME: should be static but this is called in uinfo_init outside this
- file */
-void
-read_etc_group ()
-{
- static pwdgrp_read gr;
-
- group_lock here (cygwin_finished_initializing);
-
- /* if we got blocked by the mutex, then etc_group may have been processed */
- if (group_state != uninitialized)
- return;
-
- if (group_state != initializing)
- {
- group_state = initializing;
- if (gr.open ("/etc/group"))
- {
- char *line;
- while ((line = gr.gets ()) != NULL)
- if (strlen (line))
- add_grp_line (line);
-
- group_state.set_last_modified (gr.get_fhandle (), gr.get_fname ());
- group_state = loaded;
- gr.close ();
- debug_printf ("Read /etc/group, %d lines", curr_lines);
- }
- else /* /etc/group doesn't exist -- create default one in memory */
- {
- char group_name [UNLEN + 1];
- DWORD group_name_len = UNLEN + 1;
- char domain_name [INTERNET_MAX_HOST_NAME_LENGTH + 1];
- DWORD domain_name_len = INTERNET_MAX_HOST_NAME_LENGTH + 1;
- SID_NAME_USE acType;
- static char linebuf [200];
-
- if (wincap.has_security ())
- {
- HANDLE ptok;
- cygsid tg;
- DWORD siz;
-
- if (OpenProcessToken (hMainProc, TOKEN_QUERY, &ptok))
- {
- if (GetTokenInformation (ptok, TokenPrimaryGroup, &tg,
- sizeof tg, &siz)
- && LookupAccountSidA (NULL, tg, group_name,
- &group_name_len, domain_name,
- &domain_name_len, &acType))
- {
- char strbuf[100];
- snprintf (linebuf, sizeof (linebuf), "%s:%s:%lu:",
- group_name,
- tg.string (strbuf),
- *GetSidSubAuthority (tg,
- *GetSidSubAuthorityCount (tg) - 1));
- debug_printf ("Emulating /etc/group: %s", linebuf);
- add_grp_line (linebuf);
- group_state = emulated;
- }
- CloseHandle (ptok);
- }
- }
- if (group_state != emulated)
- {
- strncpy (group_name, "Administrators", sizeof (group_name));
- if (!LookupAccountSidA (NULL, well_known_admins_sid, group_name,
- &group_name_len, domain_name,
- &domain_name_len, &acType))
- {
- strcpy (group_name, "unknown");
- debug_printf ("Failed to get local admins group name. %E");
- }
- snprintf (linebuf, sizeof (linebuf), "%s::%u:", group_name,
- (unsigned) DEFAULT_GID);
- debug_printf ("Emulating /etc/group: %s", linebuf);
- add_grp_line (linebuf);
- group_state = emulated;
- }
- }
- }
-
- return;
-}
-
-static
-struct __group16 *
-grp32togrp16 (struct __group16 *gp16, struct __group32 *gp32)
-{
- if (!gp16 || !gp32)
- return NULL;
-
- /* Copying the pointers is actually unnecessary. Just having the correct
- return type is important. */
- gp16->gr_name = gp32->gr_name;
- gp16->gr_passwd = gp32->gr_passwd;
- gp16->gr_gid = (__gid16_t) gp32->gr_gid; /* Not loss-free */
- gp16->gr_mem = gp32->gr_mem;
-
- return gp16;
-}
-
-extern "C" struct __group32 *
-getgrgid32 (__gid32_t gid)
-{
- struct __group32 * default_grp = NULL;
- if (group_state <= initializing)
- read_etc_group ();
-
- for (int i = 0; i < curr_lines; i++)
- {
- if (group_buf[i].gr_gid == DEFAULT_GID)
- default_grp = group_buf + i;
- if (group_buf[i].gr_gid == gid)
- return group_buf + i;
- }
-
- return allow_ntsec ? NULL : default_grp;
-}
-
-extern "C" struct __group16 *
-getgrgid (__gid16_t gid)
-{
- static struct __group16 g16;
-
- return grp32togrp16 (&g16, getgrgid32 ((__gid32_t) gid));
-}
-
-extern "C" struct __group32 *
-getgrnam32 (const char *name)
-{
- if (group_state <= initializing)
- read_etc_group ();
-
- for (int i = 0; i < curr_lines; i++)
- if (strcasematch (group_buf[i].gr_name, name))
- return group_buf + i;
-
- /* Didn't find requested group */
- return NULL;
-}
-
-extern "C" struct __group16 *
-getgrnam (const char *name)
-{
- static struct __group16 g16;
-
- return grp32togrp16 (&g16, getgrnam32 (name));
-}
-
-extern "C" void
-endgrent ()
-{
- grp_pos = 0;
-}
-
-extern "C" struct __group32 *
-getgrent32 ()
-{
- if (group_state <= initializing)
- read_etc_group ();
-
- if (grp_pos < curr_lines)
- return group_buf + grp_pos++;
-
- return NULL;
-}
-
-extern "C" struct __group16 *
-getgrent ()
-{
- static struct __group16 g16;
-
- return grp32togrp16 (&g16, getgrent32 ());
-}
-
-extern "C" void
-setgrent ()
-{
- grp_pos = 0;
-}
-
-/* Internal function. ONLY USE THIS INTERNALLY, NEVER `getgrent'!!! */
-struct __group32 *
-internal_getgrent (int pos)
-{
- if (group_state <= initializing)
- read_etc_group ();
-
- if (pos < curr_lines)
- return group_buf + pos;
- return NULL;
-}
-
-int
-getgroups32 (int gidsetsize, __gid32_t *grouplist, __gid32_t gid,
- const char *username)
-{
- HANDLE hToken = NULL;
- DWORD size;
- int cnt = 0;
- struct __group32 *gr;
-
- if (group_state <= initializing)
- read_etc_group ();
-
- if (allow_ntsec &&
- OpenProcessToken (hMainProc, TOKEN_QUERY, &hToken))
- {
- if (GetTokenInformation (hToken, TokenGroups, NULL, 0, &size)
- || GetLastError () == ERROR_INSUFFICIENT_BUFFER)
- {
- char buf[size];
- TOKEN_GROUPS *groups = (TOKEN_GROUPS *) buf;
-
- if (GetTokenInformation (hToken, TokenGroups, buf, size, &size))
- {
- cygsid sid;
-
- for (int gidx = 0; (gr = internal_getgrent (gidx)); ++gidx)
- if (sid.getfromgr (gr))
- for (DWORD pg = 0; pg < groups->GroupCount; ++pg)
- if (sid == groups->Groups[pg].Sid &&
- sid != well_known_world_sid)
- {
- if (cnt < gidsetsize)
- grouplist[cnt] = gr->gr_gid;
- ++cnt;
- if (gidsetsize && cnt > gidsetsize)
- {
- CloseHandle (hToken);
- goto error;
- }
- break;
- }
- }
- }
- else
- debug_printf ("%d = GetTokenInformation(NULL) %E", size);
- CloseHandle (hToken);
- if (cnt)
- return cnt;
- }
-
- for (int gidx = 0; (gr = internal_getgrent (gidx)); ++gidx)
- if (gid == gr->gr_gid)
- {
- if (cnt < gidsetsize)
- grouplist[cnt] = gr->gr_gid;
- ++cnt;
- if (gidsetsize && cnt > gidsetsize)
- goto error;
- }
- else if (gr->gr_mem)
- for (int gi = 0; gr->gr_mem[gi]; ++gi)
- if (strcasematch (username, gr->gr_mem[gi]))
- {
- if (cnt < gidsetsize)
- grouplist[cnt] = gr->gr_gid;
- ++cnt;
- if (gidsetsize && cnt > gidsetsize)
- goto error;
- }
- return cnt;
-
-error:
- set_errno (EINVAL);
- return -1;
-}
-
-extern "C" int
-getgroups32 (int gidsetsize, __gid32_t *grouplist)
-{
- return getgroups32 (gidsetsize, grouplist, myself->gid,
- cygheap->user.name ());
-}
-
-extern "C" int
-getgroups (int gidsetsize, __gid16_t *grouplist)
-{
- __gid32_t *grouplist32 = NULL;
-
- if (gidsetsize < 0)
- {
- set_errno (EINVAL);
- return -1;
- }
- if (gidsetsize > 0 && grouplist)
- grouplist32 = (__gid32_t *) alloca (gidsetsize * sizeof (__gid32_t));
-
- int ret = getgroups32 (gidsetsize, grouplist32, myself->gid,
- cygheap->user.name ());
-
- if (gidsetsize > 0 && grouplist)
- for (int i = 0; i < ret; ++ i)
- grouplist[i] = grouplist32[i];
-
- return ret;
-}
-
-extern "C" int
-initgroups32 (const char *, __gid32_t)
-{
- if (wincap.has_security ())
- cygheap->user.groups.clear_supp ();
- return 0;
-}
-
-extern "C" int
-initgroups (const char * name, __gid16_t gid)
-{
- return initgroups32 (name, gid16togid32(gid));
-}
-
-/* setgroups32: standards? */
-extern "C" int
-setgroups32 (int ngroups, const __gid32_t *grouplist)
-{
- if (ngroups < 0 || (ngroups > 0 && !grouplist))
- {
- set_errno (EINVAL);
- return -1;
- }
-
- if (!wincap.has_security ())
- return 0;
-
- cygsidlist gsids (cygsidlist_alloc, ngroups);
- struct __group32 *gr;
-
- if (ngroups && !gsids.sids)
- return -1;
-
- for (int gidx = 0; gidx < ngroups; ++gidx)
- {
- for (int gidy = 0; gidy < gidx; gidy++)
- if (grouplist[gidy] == grouplist[gidx])
- goto found; /* Duplicate */
- for (int gidy = 0; (gr = internal_getgrent (gidy)); ++gidy)
- if (gr->gr_gid == (__gid32_t) grouplist[gidx])
- {
- if (gsids.addfromgr (gr))
- goto found;
- break;
- }
- debug_printf ("No sid found for gid %d", grouplist[gidx]);
- gsids.free_sids ();
- set_errno (EINVAL);
- return -1;
- found:
- continue;
- }
- cygheap->user.groups.update_supp (gsids);
- return 0;
-}
-
-extern "C" int
-setgroups (int ngroups, const __gid16_t *grouplist)
-{
- __gid32_t *grouplist32 = NULL;
-
- if (ngroups > 0 && grouplist)
- {
- grouplist32 = (__gid32_t *) alloca (ngroups * sizeof (__gid32_t));
- if (grouplist32 == NULL)
- return -1;
- for (int i = 0; i < ngroups; i++)
- grouplist32[i] = grouplist[i];
- }
- return setgroups32 (ngroups, grouplist32);
-}
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