Update.

2000-01-02  Ulrich Drepper  <drepper@cygnus.com>

	* nss/nss_db/nss_db.h: Add definitions needed for makedb.
	* nss/nss_db/dummy-db.h: Likewise.
	* nss/makedb.c: New file.  Copied from file in db2, modified to not
	depend on being linked against libdb.

4 files changed, 659 insertions, 4 deletions

diff --git a/nss/makedb.c b/nss/makedb.c
new file mode 100644
index 0000000..d766258
--- /dev/null
+++ b/nss/makedb.c
@@ -0,0 +1,580 @@
+/* Create simple DB database from textual input.
+   Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <argp.h>
+#include <ctype.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <error.h>
+#include <fcntl.h>
+#include <libintl.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include "nss_db/dummy-db.h"
+
+/* Get libc version number.  */
+#include "../version.h"
+
+#define PACKAGE _libc_intl_domainname
+
+/* If non-zero convert key to lower case.  */
+static int to_lowercase;
+
+/* If non-zero print content of input file, one entry per line.  */
+static int do_undo;
+
+/* If non-zero do not print informational messages.  */
+static int be_quiet;
+
+/* Name of output file.  */
+static const char *output_name;
+
+/* Various definitions for the libdb handling.  */
+enum {
+  nodb,
+  db24,
+  db27
+} libdb_version;
+static int (*db_open) (const char *, int,
+		       uint32_t, int, void *, void *, void **);
+
+/* Constants which vary from version to version are actually variables
+   here.  */
+static int db_first;
+static int db_next;
+static int db_nooverwrite;
+static int db_truncate;
+
+
+/* Name and version of program.  */
+static void print_version (FILE *stream, struct argp_state *state);
+void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version;
+
+/* Definitions of arguments for argp functions.  */
+static const struct argp_option options[] =
+{
+  { "fold-case", 'f', NULL, 0, N_("Convert key to lower case") },
+  { "output", 'o', N_("NAME"), 0, N_("Write output to file NAME") },
+  { "quiet", 'q', NULL, 0,
+    N_("Do not print messages while building database") },
+  { "undo", 'u', NULL, 0,
+    N_("Print content of database file, one entry a line") },
+  { NULL, 0, NULL, 0, NULL }
+};
+
+/* Short description of program.  */
+static const char doc[] = N_("Create simple DB database from textual input.");
+
+/* Strings for arguments in help texts.  */
+static const char args_doc[] = N_("\
+INPUT-FILE OUTPUT-FILE\n-o OUTPUT-FILE INPUT-FILE\n-u INPUT-FILE");
+
+/* Prototype for option handler.  */
+static error_t parse_opt __P ((int key, char *arg, struct argp_state *state));
+
+/* Function to print some extra text in the help message.  */
+static char *more_help __P ((int key, const char *text, void *input));
+
+/* Data structure to communicate with argp functions.  */
+static struct argp argp =
+{
+  options, parse_opt, args_doc, doc, NULL, more_help
+};
+
+
+/* Prototypes for local functions.  */
+static int process_input __P ((FILE *input, const char *inname, NSS_DB *output,
+			       int to_lowercase, int be_quiet));
+static int print_database __P ((NSS_DB *db));
+static NSS_DB *dbopen (const char *fname, int oper, int mode);
+int main __P ((int argc, char *argv[]));
+
+
+int
+main (argc, argv)
+     int argc;
+     char *argv[];
+{
+  const char *input_name;
+  FILE *input_file;
+  NSS_DB *db_file;
+  int status;
+  int remaining;
+  int mode = 0666;
+
+  /* Set locale via LC_ALL.  */
+  setlocale (LC_ALL, "");
+
+  /* Set the text message domain.  */
+  textdomain (_libc_intl_domainname);
+
+  /* Initialize local variables.  */
+  input_name = NULL;
+
+  /* Parse and process arguments.  */
+  argp_parse (&argp, argc, argv, 0, &remaining, NULL);
+
+  /* Determine file names.  */
+  if (do_undo || output_name != NULL)
+    {
+      if (remaining + 1 != argc)
+	{
+	wrong_arguments:
+	  error (0, 0, gettext ("wrong number of arguments"));
+	  argp_help (&argp, stdout, ARGP_HELP_SEE,
+		     program_invocation_short_name);
+	  exit (1);
+	}
+      input_name = argv[remaining];
+    }
+  else
+    {
+      if (remaining + 2 != argc)
+	goto wrong_arguments;
+
+      input_name = argv[remaining++];
+      output_name = argv[remaining];
+    }
+
+  /* Special handling if we are asked to print the database.  */
+  if (do_undo)
+    {
+      db_file = dbopen (input_name, DB_RDONLY, 0666);
+      if (db_file == NULL)
+	error (EXIT_FAILURE, 0, gettext ("cannot open database file `%s': %s"),
+	       input_name,
+	       (errno == EINVAL ? gettext ("incorrectly formatted file")
+		: strerror (errno)));
+
+      status = print_database (db_file);
+
+      db_file->close (db_file->db, 0);
+
+      return status;
+    }
+
+  /* Open input file.  */
+  if (strcmp (input_name, "-") == 0 || strcmp (input_name, "/dev/stdin") == 0)
+    input_file = stdin;
+  else
+    {
+      struct stat st;
+
+      input_file = fopen (input_name, "r");
+      if (input_file == NULL)
+	error (EXIT_FAILURE, errno, gettext ("cannot open input file `%s'"),
+	       input_name);
+
+      /* Get the access rights from the source file.  The output file should
+	 have the same.  */
+      if (fstat (fileno (input_file), &st) >= 0)
+	mode = st.st_mode & ACCESSPERMS;
+    }
+
+  /* Open output file.  This must not be standard output so we don't
+     handle "-" and "/dev/stdout" special.  */
+  db_file = dbopen (output_name, DB_CREATE | db_truncate, mode);
+  if (db_file == NULL)
+    error (EXIT_FAILURE, errno, gettext ("cannot open output file `%s'"),
+	   output_name);
+
+  /* Start the real work.  */
+  status = process_input (input_file, input_name, db_file, to_lowercase,
+			  be_quiet);
+
+  /* Close files.  */
+  if (input_file != stdin)
+    fclose (input_file);
+  db_file->close (db_file->db, 0);
+
+  return status;
+}
+
+
+/* Handle program arguments.  */
+static error_t
+parse_opt (int key, char *arg, struct argp_state *state)
+{
+  switch (key)
+    {
+    case 'f':
+      to_lowercase = 1;
+      break;
+    case 'o':
+      output_name = arg;
+      break;
+    case 'q':
+      be_quiet = 1;
+      break;
+    case 'u':
+      do_undo = 1;
+      break;
+    default:
+      return ARGP_ERR_UNKNOWN;
+    }
+  return 0;
+}
+
+
+static char *
+more_help (int key, const char *text, void *input)
+{
+  switch (key)
+    {
+    case ARGP_KEY_HELP_EXTRA:
+      /* We print some extra information.  */
+      return strdup (gettext ("\
+Report bugs using the `glibcbug' script to <bugs@gnu.org>.\n"));
+    default:
+      break;
+    }
+  return (char *) text;
+}
+
+/* Print the version information.  */
+static void
+print_version (FILE *stream, struct argp_state *state)
+{
+  fprintf (stream, "makedb (GNU %s) %s\n", PACKAGE, VERSION);
+  fprintf (stream, gettext ("\
+Copyright (C) %s Free Software Foundation, Inc.\n\
+This is free software; see the source for copying conditions.  There is NO\n\
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
+"), "2000");
+  fprintf (stream, gettext ("Written by %s.\n"), "Ulrich Drepper");
+}
+
+
+static int
+process_input (input, inname, output, to_lowercase, be_quiet)
+     FILE *input;
+     const char *inname;
+     NSS_DB *output;
+     int to_lowercase;
+     int be_quiet;
+{
+  char *line;
+  size_t linelen;
+  int status;
+  size_t linenr;
+
+  line = NULL;
+  linelen = 0;
+  status = EXIT_SUCCESS;
+  linenr = 0;
+
+  while (!feof (input))
+    {
+      DBT key;
+      DBT val;
+      char *cp;
+      int n;
+
+      n = getline (&line, &linelen, input);
+      if (n < 0)
+	/* This means end of file or some bug.  */
+	break;
+      if (n == 0)
+	/* Short read.  Probably interrupted system call. */
+	continue;
+
+      ++linenr;
+
+      if (line[n - 1] == '\n')
+	/* Remove trailing newline.  */
+	line[--n] = '\0';
+
+      cp = line;
+      while (isspace (*cp))
+	++cp;
+
+      if (*cp == '#')
+	/* First non-space character in line '#': it's a comment.  */
+	continue;
+
+      key.data = cp;
+      while (*cp != '\0' && !isspace (*cp))
+	{
+	  if (to_lowercase)
+	    *cp = tolower (*cp);
+	  ++cp;
+	}
+
+      if (key.data == cp)
+	/* It's an empty line.  */
+	continue;
+
+      key.size = cp - (char *) key.data;
+      key.flags = 0;
+
+      while (isspace (*cp))
+	++cp;
+
+      val.data = cp;
+      val.size = (&line[n] - cp) + 1;
+      val.flags = 0;
+
+      /* Store the value.  */
+      status = output->put (output->db, NULL, &key, &val, db_nooverwrite);
+      if (status != 0)
+	{
+	  if (status == DB_KEYEXIST)
+	    {
+	      if (!be_quiet)
+		error_at_line (0, 0, inname, linenr,
+			       gettext ("duplicate key"));
+	      /* This is no real error.  Just give a warning.  */
+	      status = 0;
+	      continue;
+	    }
+	  else
+	    error (0, status, gettext ("while writing database file"));
+
+	  status = EXIT_FAILURE;
+
+	  clearerr (input);
+	  break;
+	}
+    }
+
+  if (ferror (input))
+    {
+      error (0, 0, gettext ("problems while reading `%s'"), inname);
+      status = EXIT_FAILURE;
+    }
+
+  return status;
+}
+
+
+static int
+print_database (db)
+     NSS_DB *db;
+{
+  DBT key;
+  DBT val;
+  NSS_DBC *cursor;
+  int status;
+
+  status = db->cursor (db->db, NULL, &cursor);
+  if (status != 0)
+    {
+      error (0, status, gettext ("while reading database"));
+      return EXIT_FAILURE;
+    }
+
+  key.flags = 0;
+  val.flags = 0;
+  status = cursor->c_get (cursor->cursor, &key, &val, db_first);
+  while (status == 0)
+    {
+      printf ("%.*s %s\n", (int) key.size, (char *) key.data,
+	      (char *) val.data);
+
+      status = cursor->c_get (cursor->cursor, &key, &val, db_next);
+    }
+
+  if (status != DB_NOTFOUND)
+    {
+      error (0, status, gettext ("while reading database"));
+      return EXIT_FAILURE;
+    }
+
+  return EXIT_SUCCESS;
+}
+
+
+static int
+load_db (void)
+{
+  static const char *libnames[] = { "libdb.so.3" };
+  int x;
+  void *handle;
+
+  for(x = 0; x < sizeof (libnames) / sizeof (libnames[0]); ++x)
+    {
+      handle = dlopen (libnames[x], RTLD_LAZY);
+      if (handle == NULL)
+	continue;
+
+      db_open = dlsym (handle, "db_open");
+      if (db_open != NULL)
+	{
+	  /* Alright, we got a library.  Now find out which version it is.  */
+	  const char *(*db_version) (int *, int *, int *);
+
+	  db_version = dlsym (handle, "db_version");
+	  if (db_version != NULL)
+	    {
+	      /* Call the function and get the information.  */
+	      int major, minor, subminor;
+
+	      DL_CALL_FCT (db_version, (&major, &minor, &subminor));
+	      if (major == 2)
+		{
+		  /* We currently cannot handle other versions than the
+		     2.x series.  */
+		  if (minor < 6 || (minor == 6 && subminor < 4))
+		    {
+		      libdb_version = db24;
+		      db_first = DB24_FIRST;
+		      db_next = DB24_NEXT;
+		      db_nooverwrite = DB24_NOOVERWRITE;
+		      db_truncate = DB24_TRUNCATE;
+		    }
+		  else
+		    {
+		      libdb_version = db27;
+		      db_first = DB27_FIRST;
+		      db_next = DB27_NEXT;
+		      db_nooverwrite = DB27_NOOVERWRITE;
+		      db_truncate = DB27_TRUNCATE;
+		    }
+		}
+	    }
+
+	  if (libdb_version != nodb)
+	    return 0;
+	}
+
+      dlclose (handle);
+    }
+
+  (void) dlerror ();
+  return 1;
+}
+
+
+static int
+db_cursor (void *db, void *txn, NSS_DBC **dbcp)
+{
+  void *ptr;
+  NSS_DBC *dbc = NULL;
+  int ret;
+
+  switch (libdb_version)
+    {
+    case db24:
+      ret = ((struct db24 *) db)->cursor (db, txn, &ptr);
+      break;
+    case db27:
+      ret = ((struct db27 *) db)->cursor (db, txn, &ptr, 0);
+      break;
+    default:
+      abort ();
+    }
+
+  if (ret == 0)
+    {
+      dbc = (NSS_DBC *) malloc (sizeof (NSS_DBC));
+      if (dbc == NULL)
+	error (EXIT_FAILURE, errno, gettext ("while reading database"));
+      dbc->cursor = ptr;
+
+      switch (libdb_version)
+	{
+	case db24:
+	  dbc->c_get =
+	    (int (*) (void *, void *, void *, uint32_t))
+	    ((struct dbc24 *) ptr)->c_get;
+	  break;
+	case db27:
+	  dbc->c_get =
+	    (int (*) (void *, void *, void *, uint32_t))
+	    ((struct dbc27 *) ptr)->c_get;
+	  break;
+	default:
+	  abort ();
+	}
+    }
+
+  *dbcp = dbc;
+
+  return ret;
+}
+
+
+static NSS_DB *
+dbopen (const char *fname, int oper, int mode)
+{
+  int err;
+  void *odb;
+  NSS_DB *db;
+
+  /* First load the shared object.  */
+  load_db ();
+
+  if (db_open == NULL)
+    return NULL;
+
+  /* Actually open the database.  */
+  err = DL_CALL_FCT (db_open, (fname, DB_BTREE, oper, mode, NULL, NULL, &odb));
+  if (err != 0)
+    {
+      errno = err;
+      return NULL;
+    }
+
+  /* Construct the object we pass up.  */
+  db = (NSS_DB *) malloc (sizeof (NSS_DB));
+  if (db != NULL)
+    {
+      db->db = odb;
+
+      /* The functions are at different positions for the different
+	 versions.  Sigh.  */
+      switch (libdb_version)
+	{
+	case db24:
+	  db->close =
+	    (int (*) (void *, uint32_t)) ((struct db24 *) odb)->close;
+	  db->fd =
+	    (int (*) (void *, int *)) ((struct db24 *) odb)->fd;
+	  db->get =
+	    (int (*) (void *, void *, void *, void *, uint32_t))
+	    ((struct db24 *) odb)->get;
+	  db->put =
+	    (int (*) (void *, void *, void *, void *, uint32_t))
+	    ((struct db24 *) odb)->put;
+	  break;
+	case db27:
+	  db->close =
+	    (int (*) (void *, uint32_t)) ((struct db27 *) odb)->close;
+	  db->fd =
+	    (int (*) (void *, int *)) ((struct db27 *) odb)->fd;
+	  db->get =
+	    (int (*) (void *, void *, void *, void *, uint32_t))
+	    ((struct db27 *) odb)->get;
+	  db->put =
+	    (int (*) (void *, void *, void *, void *, uint32_t))
+	    ((struct db27 *) odb)->put;
+	  break;
+	default:
+	  abort ();
+	}
+      db->cursor = db_cursor;
+    }
+
+  return db;
+}
diff --git a/nss/nss_db/db-open.c b/nss/nss_db/db-open.c
index 2d96ffd..c3a0679 100644
--- a/nss/nss_db/db-open.c
+++ b/nss/nss_db/db-open.c
@@ -57,14 +57,14 @@ load_db (void)
   static const char *libnames[] = { "libdb.so.3" };
   int x;
 
-  for(x = 0; x < 1; ++x)
+  for(x = 0; x < sizeof (libnames) / sizeof (libnames[0]); ++x)
     {
       libdb_handle = dlopen (libnames[x], RTLD_LAZY);
       if (libdb_handle == NULL)
 	continue;
 
       libdb_db_open = dlsym (libdb_handle, "db_open");
-      if (libdb_db_open)
+      if (libdb_db_open != NULL)
 	{
 	  /* Alright, we got a library.  Now find out which version it is.  */
 	  const char *(*db_version) (int *, int *, int *);
diff --git a/nss/nss_db/dummy-db.h b/nss/nss_db/dummy-db.h
index 4414a1c..600d51d 100644
--- a/nss/nss_db/dummy-db.h
+++ b/nss/nss_db/dummy-db.h
@@ -14,6 +14,11 @@
 /* Permission flags are also not changed.  */
 #define DB_RDONLY	0x010000
 
+/* Access methods.  */
+#define DB24_FIRST		0x000020
+#define DB24_NEXT		0x000800
+#define DB24_NOOVERWRITE	0x001000
+
 
 /* This is for the db-2.x version up to 2.x.y.  We use the name `db24' since
    this is the version which was shipped with glibc 2.1.  */
@@ -68,7 +73,27 @@ struct db24
 };
 
 
-/* Version 2.7, slightly incompatible with version 2.4.  */
+struct dbc24
+{
+  void *dbp;
+  void *txn;
+  struct
+  {
+    void *tqe_next;
+    void **tqe_prev;
+  } links;
+  void *internal;
+  void *c_close;
+  void *c_del;
+  int (*c_get) (void *, void *, void *, uint32_t);
+  void *c_put;
+};
+
+/* Flags which changed.  */
+#define DB24_TRUNCATE	0x080000
+
+
+/* Versions for 2.7, slightly incompatible with version 2.4.  */
 struct db27
 {
   void	*mutexp;
@@ -109,3 +134,38 @@ struct db27
   int (*stat) (void *, void *, void *(*)(size_t), uint32_t);
   int (*sync) (void *, uint32_t);
 };
+
+
+struct dbc27
+{
+  void *dbp;
+  void *txn;
+  struct
+  {
+    void *tqe_next;
+    void **tqe_prev;
+  } links;
+  uint32_t lid;
+  uint32_t locker;
+  DBT lock_dbt;
+  uint32_t lock[14];
+  size_t mylock;
+  DBT rkey;
+  DBT rdata;
+  void *c_am_close;
+  void *c_am_destroy;
+  void *c_close;
+  void *c_del;
+  int (*c_get) (void *, void *, void *, uint32_t);
+  void *c_put;
+  void *internal;
+  uint32_t flags;
+};
+
+/* Flags which changed.  */
+#define DB27_TRUNCATE	0x020000
+
+/* Access methods.  */
+#define DB27_FIRST		7
+#define DB27_NEXT		15
+#define DB27_NOOVERWRITE	17
diff --git a/nss/nss_db/nss_db.h b/nss/nss_db/nss_db.h
index 8dc2a36..dbf6ed8 100644
--- a/nss/nss_db/nss_db.h
+++ b/nss/nss_db/nss_db.h
@@ -24,17 +24,32 @@
 
 /* The error values kept the same values though new values were added.
    Define only those which we need.  */
+#define DB_KEYEXIST	( -3)
 #define DB_NOTFOUND	( -7)
 
+/* Flags are also unchanged.  */
+#define DB_CREATE	0x000001
+
+
+/* Similarly we have to handle the cursor object.  It is also very
+   different from version to version.  */
+typedef struct
+{
+  void *cursor;
+  int (*c_get) (void *, void *, void *, uint32_t);
+} NSS_DBC;
+
+
 /* This is the wrapper we put around the `DB' structures to provide a
    uniform interface to the higher-level functions.  */
 typedef struct
 {
   void *db;
   int (*close) (void *, uint32_t);
+  int (*cursor) (void *, void *, NSS_DBC **);
   int (*fd) (void *, int *);
   int (*get) (void *, void *, void *, void *, uint32_t);
-
+  int (*put) (void *, void *, void *, void *, uint32_t);
 } NSS_DB;