/*
- * Unix SMB/Netbios implementation. Version 1.9. SMB parameters and setup
+ * Unix SMB/CIFS implementation.
+ * 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)
+ * Software Foundation; either version 3 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* 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.
+ * this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-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(waitsecs);
- 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 = sys_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);
+#ifndef MAP_FAILED
+#define MAP_FAILED ((void *)-1)
+#endif
- /* We have a lock on the file. */
- return (void *)fp;
-}
+/****************************************************************************
+ 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.
+****************************************************************************/
-/***************************************************************
- End enumeration of the file.
-****************************************************************/
-void endfilepwent(void *vp, int *file_lock_depth)
+char *fgets_slash(char *s2,int maxlen,XFILE *f)
{
- FILE *fp = (FILE *)vp;
+ char *s=s2;
+ int len = 0;
+ int c;
+ bool start_of_line = True;
- 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);
-}
+ if (x_feof(f)) {
+ return(NULL);
+ }
-/*************************************************************************
- 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);
-}
+ if (maxlen <2) {
+ return(NULL);
+ }
-/*************************************************************************
- 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;
- }
+ if (!s2) {
+ maxlen = MIN(maxlen,8);
+ s = (char *)SMB_MALLOC(maxlen);
+ }
- /*
- * Check if the string is terminated with a newline - if not
- * then we must keep reading and discard until we get one.
- */
+ if (!s) {
+ return(NULL);
+ }
- linebuf_len = strlen(linebuf);
- if (linebuf_len == 0)
- {
- linebuf[0] = '\0';
- return 0;
- }
+ *s = 0;
- if (linebuf[linebuf_len - 1] != '\n')
- {
- c = '\0';
- while (!ferror(fp) && !feof(fp))
- {
- c = fgetc(fp);
- if (c == '\n')
- {
+ while (len < maxlen-1) {
+ c = x_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;
}
- }
- }
- 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;
+ return(s);
+ case EOF:
+ if (len <= 0 && !s2) {
+ SAFE_FREE(s);
+ }
+ return(len>0?s:NULL);
+ case ' ':
+ if (start_of_line) {
+ break;
+ }
+ default:
+ start_of_line = False;
+ s[len++] = c;
+ s[len] = 0;
}
- p = (unsigned char *) strchr_m(linebuf, ':');
- if (p == NULL)
- {
- DEBUG(0, ("getfileline: malformed line entry (no :)\n"));
- continue;
+ if (!s2 && len > maxlen-3) {
+ maxlen *= 2;
+ s = (char *)SMB_REALLOC(s,maxlen);
+ if (!s) {
+ DEBUG(0,("fgets_slash: failed to expand buffer!\n"));
+ return(NULL);
+ }
}
- return linebuf_len;
}
- return -1;
+ return(s);
}
-
/****************************************************************************
-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
+ Load from a pipe into memory.
****************************************************************************/
-char *fgets_slash(char *s2,int maxlen,XFILE *f)
-{
- char *s=s2;
- int len = 0;
- int c;
- BOOL start_of_line = True;
-
- if (x_feof(f))
- return(NULL);
-
- if (maxlen <2) return(NULL);
-
- if (!s2)
- {
- maxlen = MIN(maxlen,8);
- s = (char *)malloc(maxlen);
- }
-
- if (!s) return(NULL);
-
- *s = 0;
-
- while (len < maxlen-1)
- {
- c = x_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)
- SAFE_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)
- {
- char *t;
-
- maxlen *= 2;
- t = (char *)Realloc(s,maxlen);
- if (!t) {
- DEBUG(0,("fgets_slash: failed to expand buffer!\n"));
- SAFE_FREE(s);
- return(NULL);
- } else s = t;
- }
- }
- return(s);
-}
-
-/****************************************************************************
-load from a pipe into memory
-****************************************************************************/
-char *file_pload(char *syscmd, size_t *size)
+static char *file_pload(char *syscmd, size_t *size)
{
int fd, n;
- char *p, *tp;
+ char *p;
pstring buf;
size_t total;
fd = sys_popen(syscmd);
- if (fd == -1) return NULL;
+ if (fd == -1) {
+ return NULL;
+ }
p = NULL;
total = 0;
while ((n = read(fd, buf, sizeof(buf))) > 0) {
- tp = Realloc(p, total + n + 1);
- if (!tp) {
- DEBUG(0,("file_pload: failed to exand buffer!\n"));
+ p = (char *)SMB_REALLOC(p, total + n + 1);
+ if (!p) {
+ DEBUG(0,("file_pload: failed to expand buffer!\n"));
close(fd);
- SAFE_FREE(p);
return NULL;
- } else p = tp;
+ }
memcpy(p+total, buf, n);
total += n;
}
- if (p) p[total] = 0;
+ if (p) {
+ p[total] = 0;
+ }
+
+ /* FIXME: Perhaps ought to check that the command completed
+ * successfully (returned 0); if not the data may be
+ * truncated. */
sys_pclose(fd);
- if (size) *size = total;
+ if (size) {
+ *size = total;
+ }
return p;
}
/****************************************************************************
-load a file into memory from a fd.
+ Load a file into memory from a fd.
+ Truncate at maxsize. If maxsize == 0 - no limit.
****************************************************************************/
-char *fd_load(int fd, size_t *size)
+char *fd_load(int fd, size_t *psize, size_t maxsize)
{
SMB_STRUCT_STAT sbuf;
+ size_t size;
char *p;
- if (sys_fstat(fd, &sbuf) != 0) return NULL;
+ if (sys_fstat(fd, &sbuf) != 0) {
+ return NULL;
+ }
- p = (char *)malloc(sbuf.st_size+1);
- if (!p) return NULL;
+ size = sbuf.st_size;
+ if (maxsize) {
+ size = MIN(size, maxsize);
+ }
- if (read(fd, p, sbuf.st_size) != sbuf.st_size) {
+ p = (char *)SMB_MALLOC(size+1);
+ if (!p) {
+ return NULL;
+ }
+
+ if (read(fd, p, size) != size) {
SAFE_FREE(p);
return NULL;
}
- p[sbuf.st_size] = 0;
+ p[size] = 0;
- if (size) *size = sbuf.st_size;
+ if (psize) {
+ *psize = size;
+ }
return p;
}
/****************************************************************************
-load a file into memory
+ Load a file into memory.
****************************************************************************/
-char *file_load(const char *fname, size_t *size)
+
+char *file_load(const char *fname, size_t *size, size_t maxsize)
{
int fd;
char *p;
- if (!fname || !*fname) return NULL;
+ if (!fname || !*fname) {
+ return NULL;
+ }
fd = open(fname,O_RDONLY);
- if (fd == -1) return NULL;
-
- p = fd_load(fd, size);
+ if (fd == -1) {
+ return NULL;
+ }
+ p = fd_load(fd, size, maxsize);
close(fd);
-
return p;
}
+/*******************************************************************
+ unmap or free memory
+*******************************************************************/
+
+bool unmap_file(void* start, size_t size)
+{
+#ifdef HAVE_MMAP
+ if ( munmap( start, size ) != 0 ) {
+ DEBUG( 1, ("map_file: Failed to unmap address %p "
+ "of size %u - %s\n",
+ start, (unsigned int)size, strerror(errno) ));
+ return False;
+ }
+ return True;
+#else
+ SAFE_FREE( start );
+ return True;
+#endif
+}
/*******************************************************************
-mmap (if possible) or read a file
+ mmap (if possible) or read a file.
********************************************************************/
+
void *map_file(char *fname, size_t size)
{
size_t s2 = 0;
int fd;
fd = open(fname, O_RDONLY, 0);
if (fd == -1) {
- DEBUG(1,("Failed to load %s - %s\n", fname, strerror(errno)));
+ DEBUG(2,("map_file: Failed to load %s - %s\n", fname, strerror(errno)));
return NULL;
}
p = mmap(NULL, size, PROT_READ, MAP_SHARED|MAP_FILE, fd, 0);
close(fd);
if (p == MAP_FAILED) {
- DEBUG(1,("Failed to mmap %s - %s\n", fname, strerror(errno)));
+ DEBUG(1,("map_file: Failed to mmap %s - %s\n", fname, strerror(errno)));
return NULL;
}
#endif
if (!p) {
- p = file_load(fname, &s2);
- if (!p || s2 != size) {
- DEBUG(1,("incorrect size for %s - got %d expected %d\n",
- fname, s2, size));
- if (p) free(p);
+ p = file_load(fname, &s2, 0);
+ if (!p) {
+ return NULL;
+ }
+ if (s2 != size) {
+ DEBUG(1,("map_file: incorrect size for %s - got %lu expected %lu\n",
+ fname, (unsigned long)s2, (unsigned long)size));
+ SAFE_FREE(p);
return NULL;
}
}
-
return p;
}
-
/****************************************************************************
-parse a buffer into lines
+ Parse a buffer into lines.
****************************************************************************/
+
static char **file_lines_parse(char *p, size_t size, int *numlines)
{
int i;
char *s, **ret;
- if (!p) return NULL;
+ if (!p) {
+ return NULL;
+ }
for (s = p, i=0; s < p+size; s++) {
if (s[0] == '\n') i++;
}
- ret = (char **)malloc(sizeof(ret[0])*(i+2));
+ ret = SMB_MALLOC_ARRAY(char *, i+2);
if (!ret) {
SAFE_FREE(p);
return NULL;
}
memset(ret, 0, sizeof(ret[0])*(i+2));
- if (numlines) *numlines = i;
ret[0] = p;
for (s = p, i=0; s < p+size; s++) {
i++;
ret[i] = s+1;
}
- if (s[0] == '\r') s[0] = 0;
+ if (s[0] == '\r') {
+ s[0] = 0;
+ }
+ }
+
+ /* remove any blank lines at the end */
+ while (i > 0 && ret[i-1][0] == 0) {
+ i--;
+ }
+
+ if (numlines) {
+ *numlines = i;
}
return ret;
}
-
/****************************************************************************
-load a file into memory and return an array of pointers to lines in the file
-must be freed with file_lines_free().
+ Load a file into memory and return an array of pointers to lines in the file
+ must be freed with file_lines_free().
****************************************************************************/
-char **file_lines_load(const char *fname, int *numlines)
+
+char **file_lines_load(const char *fname, int *numlines, size_t maxsize)
{
char *p;
- size_t size;
+ size_t size = 0;
- p = file_load(fname, &size);
- if (!p) return NULL;
+ p = file_load(fname, &size, maxsize);
+ if (!p) {
+ return NULL;
+ }
return file_lines_parse(p, size, numlines);
}
/****************************************************************************
-load a fd into memory and return an array of pointers to lines in the file
-must be freed with file_lines_free(). If convert is true calls unix_to_dos on
-the list.
+ Load a fd into memory and return an array of pointers to lines in the file
+ must be freed with file_lines_free(). If convert is true calls unix_to_dos on
+ the list.
****************************************************************************/
-char **fd_lines_load(int fd, int *numlines)
+
+char **fd_lines_load(int fd, int *numlines, size_t maxsize)
{
char *p;
size_t size;
- p = fd_load(fd, &size);
- if (!p) return NULL;
+ p = fd_load(fd, &size, maxsize);
+ if (!p) {
+ return NULL;
+ }
return file_lines_parse(p, size, numlines);
}
-
/****************************************************************************
-load a pipe into memory and return an array of pointers to lines in the data
-must be freed with file_lines_free().
+ Load a pipe into memory and return an array of pointers to lines in the data
+ must be freed with file_lines_free().
****************************************************************************/
+
char **file_lines_pload(char *syscmd, int *numlines)
{
char *p;
size_t size;
p = file_pload(syscmd, &size);
- if (!p) return NULL;
+ if (!p) {
+ return NULL;
+ }
return file_lines_parse(p, size, numlines);
}
/****************************************************************************
-free lines loaded with file_lines_load
+ Free lines loaded with file_lines_load.
****************************************************************************/
+
void file_lines_free(char **lines)
{
- if (!lines) return;
+ if (!lines) {
+ return;
+ }
SAFE_FREE(lines[0]);
SAFE_FREE(lines);
}
-
/****************************************************************************
-take a lislist of lines and modify them to produce a list where \ continues
-a line
+ Take a list of lines and modify them to produce a list where \ continues
+ a line.
****************************************************************************/
+
void file_lines_slashcont(char **lines)
{
int i, j;
lines[i][len-1] = ' ';
if (lines[i+1]) {
char *p = &lines[i][len];
- while (p < lines[i+1]) *p++ = ' ';
- for (j = i+1; lines[j]; j++) lines[j] = lines[j+1];
+ while (p < lines[i+1]) {
+ *p++ = ' ';
+ }
+ for (j = i+1; lines[j]; j++) {
+ lines[j] = lines[j+1];
+ }
}
} else {
i++;
}
}
}
+
+/****************************************************************************
+ Save a lump of data into a file. Mostly used for debugging.
+****************************************************************************/
+
+bool file_save(const char *fname, void *packet, size_t length)
+{
+ int fd;
+ fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0644);
+ if (fd == -1) {
+ return False;
+ }
+ if (write(fd, packet, length) != (size_t)length) {
+ return False;
+ }
+ close(fd);
+ return True;
+}
git.samba.org / sfrench / samba-autobuild / .git / blobdiff