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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.
This commit is contained in:
Ulrich Drepper 2000-01-02 08:45:58 +00:00
parent 8d6f1731fc
commit 793bd4d9eb
6 changed files with 667 additions and 5 deletions
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7
ChangeLog
View File

@ -1,3 +1,10 @@
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.
2000-01-01 Ulrich Drepper <drepper@cygnus.com>
* Makeconfig (all-subdirs): Remove db and db2.

2
NEWS
View File

@ -11,7 +11,7 @@ Version 2.2
* Thorsten Kukuk added secure mode support to nscd.
* Update from Berkeley db 2.7.5.
* The Berkeley db libraries have been removed.
* Wide character I/O streams implemented by Ulrich Drepper.

580
nss/makedb.c Normal file
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@ -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;
}

4
nss/nss_db/db-open.c
View File

@ -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 *);

62
nss/nss_db/dummy-db.h
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@ -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

17
nss/nss_db/nss_db.h
View File

@ -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;