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Diffstat (limited to 'winsup/cygwin/grp.cc')
-rw-r--r--winsup/cygwin/grp.cc356
1 files changed, 0 insertions, 356 deletions
diff --git a/winsup/cygwin/grp.cc b/winsup/cygwin/grp.cc
deleted file mode 100644
index 32dc6d0a3..000000000
--- a/winsup/cygwin/grp.cc
+++ /dev/null
@@ -1,356 +0,0 @@
-/* grp.cc
-
- Copyright 1996, 1997, 1998, 2000, 2001 Cygnus Solutions.
-
- 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 "sync.h"
-#include "sigproc.h"
-#include "pinfo.h"
-#include "fhandler.h"
-#include "dtable.h"
-#include "cygheap.h"
-#include "cygerrno.h"
-#include "security.h"
-
-/* Read /etc/group only once for better performance. This is done
- on the first call that needs information from it. */
-
-static NO_COPY const char *etc_group = "/etc/group";
-static struct group *group_buf = NULL; /* group contents in memory */
-static int curr_lines = 0;
-static int max_lines = 0;
-
-/* Position in the group cache */
-#ifdef _MT_SAFE
-#define grp_pos _reent_winsup()->_grp_pos
-#else
-static int grp_pos = 0;
-#endif
-
-/* Set to loaded when /etc/passwd has been read in by read_etc_passwd ().
- Set to emulated if passwd is emulated. */
-/* Functions in this file need to check the value of passwd_state
- and read in the password file if it isn't set. */
-enum grp_state {
- uninitialized = 0,
- initializing,
- emulated,
- loaded
-};
-static grp_state group_state = uninitialized;
-
-static int
-parse_grp (struct group &grp, const char *line)
-{
- int len = strlen(line);
- char *newline = (char *) malloc (len + 1);
- (void) memcpy (newline, line, len + 1);
-
- if (newline[--len] == '\n')
- newline[len] = '\0';
-
- char *dp = strchr (newline, ':');
-
- if (!dp)
- return 0;
-
- *dp++ = '\0';
- grp.gr_name = newline;
-
- 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 (const char *line)
-{
- if (curr_lines == max_lines)
- {
- max_lines += 10;
- group_buf = (struct group *) realloc (group_buf, max_lines * sizeof (struct group));
- }
- if (parse_grp (group_buf[curr_lines], line))
- curr_lines++;
-}
-
-/* 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 ()
-{
- char linebuf [200];
- char group_name [UNLEN + 1];
- DWORD group_name_len = UNLEN + 1;
-
- strncpy (group_name, "Administrators", sizeof (group_name));
-
- static NO_COPY pthread_mutex_t etc_group_mutex = (pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER;
- pthread_mutex_lock (&etc_group_mutex);
-
- /* if we got blocked by the mutex, then etc_group may have been processed */
- if (group_state != uninitialized)
- {
- pthread_mutex_unlock(&etc_group_mutex);
- return;
- }
-
- if (group_state != initializing)
- {
- group_state = initializing;
-
- FILE *f = fopen (etc_group, "rt");
-
- if (f)
- {
- while (fgets (linebuf, sizeof (linebuf), f) != NULL)
- {
- if (strlen (linebuf))
- add_grp_line (linebuf);
- }
-
- fclose (f);
- group_state = loaded;
- }
- else /* /etc/group doesn't exist -- create default one in memory */
- {
- char domain_name [INTERNET_MAX_HOST_NAME_LENGTH + 1];
- DWORD domain_name_len = INTERNET_MAX_HOST_NAME_LENGTH + 1;
- SID_NAME_USE acType;
- debug_printf ("Emulating /etc/group");
- 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:\n", group_name, DEFAULT_GID);
- add_grp_line (linebuf);
- group_state = emulated;
- }
- }
-
- pthread_mutex_unlock(&etc_group_mutex);
-}
-
-extern "C"
-struct group *
-getgrgid (gid_t gid)
-{
- struct group * 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 default_grp;
-}
-
-extern "C"
-struct group *
-getgrnam (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"
-void
-endgrent()
-{
- grp_pos = 0;
-}
-
-extern "C"
-struct group *
-getgrent()
-{
- if (group_state <= initializing)
- read_etc_group();
-
- if (grp_pos < curr_lines)
- return group_buf + grp_pos++;
-
- return NULL;
-}
-
-extern "C"
-void
-setgrent ()
-{
- grp_pos = 0;
-}
-
-/* Internal function. ONLY USE THIS INTERNALLY, NEVER `getgrent'!!! */
-struct group *
-internal_getgrent (int pos)
-{
- if (group_state <= initializing)
- read_etc_group();
-
- if (pos < curr_lines)
- return group_buf + pos;
- return NULL;
-}
-
-int
-getgroups (int gidsetsize, gid_t *grouplist, gid_t gid, const char *username)
-{
- HANDLE hToken = NULL;
- DWORD size;
- int cnt = 0;
- struct group *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)
- {
- 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
-getgroups (int gidsetsize, gid_t *grouplist)
-{
- return getgroups (gidsetsize, grouplist, myself->gid, cygheap->user.name ());
-}
-
-extern "C"
-int
-initgroups (const char *, gid_t)
-{
- return 0;
-}
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