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-rw-r--r--source3/lib/util_file.c329
-rw-r--r--source3/lib/util_sid.c178
2 files changed, 507 insertions, 0 deletions
diff --git a/source3/lib/util_file.c b/source3/lib/util_file.c
new file mode 100644
index 0000000000..0d6e77b010
--- /dev/null
+++ b/source3/lib/util_file.c
@@ -0,0 +1,329 @@
+/*
+ * Unix SMB/Netbios implementation. Version 1.9. SMB parameters and setup
+ * Copyright (C) Andrew Tridgell 1992-1998 Modified by Jeremy Allison 1995.
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 675
+ * Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "includes.h"
+
+extern int DEBUGLEVEL;
+
+static int gotalarm;
+
+/***************************************************************
+ Signal function to tell us we timed out.
+****************************************************************/
+
+static void gotalarm_sig(void)
+{
+ gotalarm = 1;
+}
+
+/***************************************************************
+ Lock or unlock a fd for a known lock type. Abandon after waitsecs
+ seconds.
+****************************************************************/
+
+BOOL do_file_lock(int fd, int waitsecs, int type)
+{
+ SMB_STRUCT_FLOCK lock;
+ int ret;
+
+ gotalarm = 0;
+ CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
+
+ lock.l_type = type;
+ lock.l_whence = SEEK_SET;
+ lock.l_start = 0;
+ lock.l_len = 1;
+ lock.l_pid = 0;
+
+ alarm(5);
+ ret = fcntl(fd, SMB_F_SETLKW, &lock);
+ alarm(0);
+ CatchSignal(SIGALRM, SIGNAL_CAST SIG_DFL);
+
+ if (gotalarm) {
+ DEBUG(0, ("do_file_lock: failed to %s file.\n",
+ type == F_UNLCK ? "unlock" : "lock"));
+ return False;
+ }
+
+ return (ret == 0);
+}
+
+
+/***************************************************************
+ Lock an fd. Abandon after waitsecs seconds.
+****************************************************************/
+
+BOOL file_lock(int fd, int type, int secs, int *plock_depth)
+{
+ if (fd < 0)
+ return False;
+
+ (*plock_depth)++;
+
+ if ((*plock_depth) == 0)
+ {
+ if (!do_file_lock(fd, secs, type)) {
+ DEBUG(10,("file_lock: locking file failed, error = %s.\n",
+ strerror(errno)));
+ return False;
+ }
+ }
+
+ return True;
+}
+
+/***************************************************************
+ Unlock an fd. Abandon after waitsecs seconds.
+****************************************************************/
+
+BOOL file_unlock(int fd, int *plock_depth)
+{
+ BOOL ret=True;
+
+ if(*plock_depth == 1)
+ ret = do_file_lock(fd, 5, F_UNLCK);
+
+ (*plock_depth)--;
+
+ if(!ret)
+ DEBUG(10,("file_unlock: unlocking file failed, error = %s.\n",
+ strerror(errno)));
+ return ret;
+}
+
+/***************************************************************
+ locks a file for enumeration / modification.
+ update to be set = True if modification is required.
+****************************************************************/
+
+void *startfilepwent(char *pfile, char *s_readbuf, int bufsize,
+ int *file_lock_depth, BOOL update)
+{
+ FILE *fp = NULL;
+
+ if (!*pfile)
+ {
+ DEBUG(0, ("startfilepwent: No file set\n"));
+ return (NULL);
+ }
+ DEBUG(10, ("startfilepwent: opening file %s\n", pfile));
+
+ fp = fopen(pfile, update ? "r+b" : "rb");
+
+ if (fp == NULL) {
+ DEBUG(0, ("startfilepwent: unable to open file %s\n", pfile));
+ return NULL;
+ }
+
+ /* Set a buffer to do more efficient reads */
+ setvbuf(fp, s_readbuf, _IOFBF, bufsize);
+
+ if (!file_lock(fileno(fp), (update ? F_WRLCK : F_RDLCK), 5, file_lock_depth))
+ {
+ DEBUG(0, ("startfilepwent: unable to lock file %s\n", pfile));
+ fclose(fp);
+ return NULL;
+ }
+
+ /* Make sure it is only rw by the owner */
+ chmod(pfile, 0600);
+
+ /* We have a lock on the file. */
+ return (void *)fp;
+}
+
+/***************************************************************
+ End enumeration of the file.
+****************************************************************/
+void endfilepwent(void *vp, int *file_lock_depth)
+{
+ FILE *fp = (FILE *)vp;
+
+ file_unlock(fileno(fp), file_lock_depth);
+ fclose(fp);
+ DEBUG(7, ("endfilepwent: closed file.\n"));
+}
+
+/*************************************************************************
+ Return the current position in the file list as an SMB_BIG_UINT.
+ This must be treated as an opaque token.
+*************************************************************************/
+SMB_BIG_UINT getfilepwpos(void *vp)
+{
+ return (SMB_BIG_UINT)sys_ftell((FILE *)vp);
+}
+
+/*************************************************************************
+ Set the current position in the file list from an SMB_BIG_UINT.
+ This must be treated as an opaque token.
+*************************************************************************/
+BOOL setfilepwpos(void *vp, SMB_BIG_UINT tok)
+{
+ return !sys_fseek((FILE *)vp, (SMB_OFF_T)tok, SEEK_SET);
+}
+
+/*************************************************************************
+ gets a line out of a file.
+ line is of format "xxxx:xxxxxx:xxxxx:".
+ lines with "#" at the front are ignored.
+*************************************************************************/
+int getfileline(void *vp, char *linebuf, int linebuf_size)
+{
+ /* Static buffers we will return. */
+ FILE *fp = (FILE *)vp;
+ unsigned char c;
+ unsigned char *p;
+ size_t linebuf_len;
+
+ if (fp == NULL)
+ {
+ DEBUG(0,("getfileline: Bad file pointer.\n"));
+ return -1;
+ }
+
+ /*
+ * Scan the file, a line at a time.
+ */
+ while (!feof(fp))
+ {
+ linebuf[0] = '\0';
+
+ fgets(linebuf, linebuf_size, fp);
+ if (ferror(fp))
+ {
+ return -1;
+ }
+
+ /*
+ * Check if the string is terminated with a newline - if not
+ * then we must keep reading and discard until we get one.
+ */
+
+ linebuf_len = strlen(linebuf);
+ if (linebuf[linebuf_len - 1] != '\n')
+ {
+ c = '\0';
+ while (!ferror(fp) && !feof(fp))
+ {
+ c = fgetc(fp);
+ if (c == '\n')
+ {
+ break;
+ }
+ }
+ }
+ else
+ {
+ linebuf[linebuf_len - 1] = '\0';
+ }
+
+#ifdef DEBUG_PASSWORD
+ DEBUG(100, ("getfileline: got line |%s|\n", linebuf));
+#endif
+ if ((linebuf[0] == 0) && feof(fp))
+ {
+ DEBUG(4, ("getfileline: end of file reached\n"));
+ return 0;
+ }
+
+ if (linebuf[0] == '#' || linebuf[0] == '\0')
+ {
+ DEBUG(6, ("getfileline: skipping comment or blank line\n"));
+ continue;
+ }
+
+ p = (unsigned char *) strchr(linebuf, ':');
+ if (p == NULL)
+ {
+ DEBUG(0, ("getfileline: malformed line entry (no :)\n"));
+ continue;
+ }
+ return linebuf_len;
+ }
+ return -1;
+}
+
+
+/****************************************************************************
+read a line from a file with possible \ continuation chars.
+Blanks at the start or end of a line are stripped.
+The string will be allocated if s2 is NULL
+****************************************************************************/
+char *fgets_slash(char *s2,int maxlen,FILE *f)
+{
+ char *s=s2;
+ int len = 0;
+ int c;
+ BOOL start_of_line = True;
+
+ if (feof(f))
+ return(NULL);
+
+ if (!s2)
+ {
+ maxlen = MIN(maxlen,8);
+ s = (char *)Realloc(s,maxlen);
+ }
+
+ if (!s || maxlen < 2) return(NULL);
+
+ *s = 0;
+
+ while (len < maxlen-1)
+ {
+ c = getc(f);
+ switch (c)
+ {
+ case '\r':
+ break;
+ case '\n':
+ while (len > 0 && s[len-1] == ' ')
+ {
+ s[--len] = 0;
+ }
+ if (len > 0 && s[len-1] == '\\')
+ {
+ s[--len] = 0;
+ start_of_line = True;
+ break;
+ }
+ return(s);
+ case EOF:
+ if (len <= 0 && !s2)
+ free(s);
+ return(len>0?s:NULL);
+ case ' ':
+ if (start_of_line)
+ break;
+ default:
+ start_of_line = False;
+ s[len++] = c;
+ s[len] = 0;
+ }
+ if (!s2 && len > maxlen-3)
+ {
+ maxlen *= 2;
+ s = (char *)Realloc(s,maxlen);
+ if (!s) return(NULL);
+ }
+ }
+ return(s);
+}
+
diff --git a/source3/lib/util_sid.c b/source3/lib/util_sid.c
new file mode 100644
index 0000000000..17af94a79c
--- /dev/null
+++ b/source3/lib/util_sid.c
@@ -0,0 +1,178 @@
+/*
+ Unix SMB/Netbios implementation.
+ Version 1.9.
+ Samba utility functions
+ Copyright (C) Andrew Tridgell 1992-1998
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+
+extern int DEBUGLEVEL;
+
+
+/*****************************************************************
+ Convert a SID to an ascii string.
+*****************************************************************/
+
+char *sid_to_string(pstring sidstr_out, DOM_SID *sid)
+{
+ char subauth[16];
+ int i;
+ /* BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 */
+ uint32 ia = (sid->id_auth[5]) +
+ (sid->id_auth[4] << 8 ) +
+ (sid->id_auth[3] << 16) +
+ (sid->id_auth[2] << 24);
+
+ slprintf(sidstr_out, sizeof(pstring) - 1, "S-%d-%d", sid->sid_rev_num, ia);
+
+ for (i = 0; i < sid->num_auths; i++)
+ {
+ slprintf(subauth, sizeof(subauth)-1, "-%d", sid->sub_auths[i]);
+ pstrcat(sidstr_out, subauth);
+ }
+
+ DEBUG(7,("sid_to_string returning %s\n", sidstr_out));
+ return sidstr_out;
+}
+
+/*****************************************************************
+ Convert a string to a SID. Returns True on success, False on fail.
+*****************************************************************/
+
+BOOL string_to_sid(DOM_SID *sidout, char *sidstr)
+{
+ pstring tok;
+ char *p = sidstr;
+ /* BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 */
+ uint32 ia;
+
+ memset((char *)sidout, '\0', sizeof(DOM_SID));
+
+ if (StrnCaseCmp( sidstr, "S-", 2)) {
+ DEBUG(0,("string_to_sid: Sid %s does not start with 'S-'.\n", sidstr));
+ return False;
+ }
+
+ p += 2;
+ if (!next_token(&p, tok, "-", sizeof(tok))) {
+ DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
+ return False;
+ }
+
+ /* Get the revision number. */
+ sidout->sid_rev_num = atoi(tok);
+
+ if (!next_token(&p, tok, "-", sizeof(tok))) {
+ DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
+ return False;
+ }
+
+ /* identauth in decimal should be < 2^32 */
+ ia = atoi(tok);
+
+ /* NOTE - the ia value is in big-endian format. */
+ sidout->id_auth[0] = 0;
+ sidout->id_auth[1] = 0;
+ sidout->id_auth[2] = (ia & 0xff000000) >> 24;
+ sidout->id_auth[3] = (ia & 0x00ff0000) >> 16;
+ sidout->id_auth[4] = (ia & 0x0000ff00) >> 8;
+ sidout->id_auth[5] = (ia & 0x000000ff);
+
+ sidout->num_auths = 0;
+
+ while(next_token(&p, tok, "-", sizeof(tok)) &&
+ sidout->num_auths < MAXSUBAUTHS)
+ {
+ /*
+ * NOTE - the subauths are in native machine-endian format. They
+ * are converted to little-endian when linearized onto the wire.
+ */
+ sid_append_rid(sidout, atoi(tok));
+ }
+
+ DEBUG(7,("string_to_sid: converted SID %s ok\n", sidstr));
+
+ return True;
+}
+
+/*****************************************************************
+ add a rid to the end of a sid
+*****************************************************************/
+BOOL sid_append_rid(DOM_SID *sid, uint32 rid)
+{
+ if (sid->num_auths < MAXSUBAUTHS)
+ {
+ sid->sub_auths[sid->num_auths++] = rid;
+ return True;
+ }
+ return False;
+}
+
+/*****************************************************************
+ removes the last rid from the end of a sid
+*****************************************************************/
+BOOL sid_split_rid(DOM_SID *sid, uint32 *rid)
+{
+ if (sid->num_auths > 0)
+ {
+ sid->num_auths--;
+ (*rid) = sid->sub_auths[sid->num_auths];
+ return True;
+ }
+ return False;
+}
+
+/*****************************************************************
+ copies a sid
+*****************************************************************/
+void sid_copy(DOM_SID *sid1, DOM_SID *sid2)
+{
+ int i;
+
+ for (i = 0; i < sid2->num_auths; i++)
+ {
+ sid1->sub_auths[i] = sid2->sub_auths[i];
+ }
+
+ sid1->num_auths = sid2->num_auths;
+ sid1->sid_rev_num = sid2->sid_rev_num;
+}
+/*****************************************************************
+ compare two sids
+*****************************************************************/
+BOOL sid_equal(DOM_SID *sid1, DOM_SID *sid2)
+{
+ int i;
+
+ /* compare most likely different rids, first: i.e start at end */
+ for (i = sid1->num_auths-1; i >= 0; --i)
+ {
+ if (sid1->sub_auths[i] != sid2->sub_auths[i]) return False;
+ }
+
+ if (sid1->num_auths != sid2->num_auths ) return False;
+ if (sid1->sid_rev_num != sid2->sid_rev_num) return False;
+
+ for (i = 0; i < 6; i++)
+ {
+ if (sid1->id_auth[i] != sid2->id_auth[i]) return False;
+ }
+
+ return True;
+}
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