/* Handle configuration data.
|
/* Handle configuration data.
|
Copyright (C) 1997,98,99,2000,2001 Free Software Foundation, Inc.
|
Copyright (C) 1997,98,99,2000,2001 Free Software Foundation, Inc.
|
This file is part of the GNU C Library.
|
This file is part of the GNU C Library.
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
The GNU C Library is free software; you can redistribute it and/or
|
modify it under the terms of the GNU Lesser General Public
|
modify it under the terms of the GNU Lesser General Public
|
License as published by the Free Software Foundation; either
|
License as published by the Free Software Foundation; either
|
version 2.1 of the License, or (at your option) any later version.
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
The GNU C Library is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
Lesser General Public License for more details.
|
Lesser General Public License for more details.
|
|
|
You should have received a copy of the GNU Lesser General Public
|
You should have received a copy of the GNU Lesser General Public
|
License along with the GNU C Library; if not, write to the Free
|
License along with the GNU C Library; if not, write to the Free
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
02111-1307 USA. */
|
02111-1307 USA. */
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|
|
#include <assert.h>
|
#include <assert.h>
|
#include <ctype.h>
|
#include <ctype.h>
|
#include <errno.h>
|
#include <errno.h>
|
#include <limits.h>
|
#include <limits.h>
|
#include <locale.h>
|
#include <locale.h>
|
#include <search.h>
|
#include <search.h>
|
#include <stddef.h>
|
#include <stddef.h>
|
#include <stdio.h>
|
#include <stdio.h>
|
#include <stdio_ext.h>
|
#include <stdio_ext.h>
|
#include <stdlib.h>
|
#include <stdlib.h>
|
#include <string.h>
|
#include <string.h>
|
#include <unistd.h>
|
#include <unistd.h>
|
#include <sys/param.h>
|
#include <sys/param.h>
|
|
|
#include <dirent.h>
|
#include <dirent.h>
|
#include <gconv_int.h>
|
#include <gconv_int.h>
|
|
|
/* This is the default path where we look for module lists. */
|
/* This is the default path where we look for module lists. */
|
static const char default_gconv_path[] = GCONV_PATH;
|
static const char default_gconv_path[] = GCONV_PATH;
|
|
|
/* The path elements, as determined by the __gconv_get_path function.
|
/* The path elements, as determined by the __gconv_get_path function.
|
All path elements end in a slash. */
|
All path elements end in a slash. */
|
struct path_elem *__gconv_path_elem;
|
struct path_elem *__gconv_path_elem;
|
/* Maximum length of a single path element in __gconv_path_elem. */
|
/* Maximum length of a single path element in __gconv_path_elem. */
|
size_t __gconv_max_path_elem_len;
|
size_t __gconv_max_path_elem_len;
|
|
|
/* We use the following struct if we couldn't allocate memory. */
|
/* We use the following struct if we couldn't allocate memory. */
|
static const struct path_elem empty_path_elem;
|
static const struct path_elem empty_path_elem;
|
|
|
/* Name of the file containing the module information in the directories
|
/* Name of the file containing the module information in the directories
|
along the path. */
|
along the path. */
|
static const char gconv_conf_filename[] = "gconv-modules";
|
static const char gconv_conf_filename[] = "gconv-modules";
|
|
|
/* Filename extension for the modules. */
|
/* Filename extension for the modules. */
|
#ifndef MODULE_EXT
|
#ifndef MODULE_EXT
|
# define MODULE_EXT ".so"
|
# define MODULE_EXT ".so"
|
#endif
|
#endif
|
static const char gconv_module_ext[] = MODULE_EXT;
|
static const char gconv_module_ext[] = MODULE_EXT;
|
|
|
/* We have a few builtin transformations. */
|
/* We have a few builtin transformations. */
|
static struct gconv_module builtin_modules[] =
|
static struct gconv_module builtin_modules[] =
|
{
|
{
|
#define BUILTIN_TRANSFORMATION(From, To, Cost, Name, Fct, MinF, MaxF, \
|
#define BUILTIN_TRANSFORMATION(From, To, Cost, Name, Fct, MinF, MaxF, \
|
MinT, MaxT) \
|
MinT, MaxT) \
|
{ \
|
{ \
|
from_string: From, \
|
from_string: From, \
|
to_string: To, \
|
to_string: To, \
|
cost_hi: Cost, \
|
cost_hi: Cost, \
|
cost_lo: INT_MAX, \
|
cost_lo: INT_MAX, \
|
module_name: Name \
|
module_name: Name \
|
},
|
},
|
#define BUILTIN_ALIAS(From, To)
|
#define BUILTIN_ALIAS(From, To)
|
|
|
#include "gconv_builtin.h"
|
#include "gconv_builtin.h"
|
};
|
};
|
|
|
#undef BUILTIN_TRANSFORMATION
|
#undef BUILTIN_TRANSFORMATION
|
#undef BUILTIN_ALIAS
|
#undef BUILTIN_ALIAS
|
|
|
static const char *builtin_aliases[] =
|
static const char *builtin_aliases[] =
|
{
|
{
|
#define BUILTIN_TRANSFORMATION(From, To, Cost, Name, Fct, MinF, MaxF, \
|
#define BUILTIN_TRANSFORMATION(From, To, Cost, Name, Fct, MinF, MaxF, \
|
MinT, MaxT)
|
MinT, MaxT)
|
#define BUILTIN_ALIAS(From, To) From " " To,
|
#define BUILTIN_ALIAS(From, To) From " " To,
|
|
|
#include "gconv_builtin.h"
|
#include "gconv_builtin.h"
|
};
|
};
|
|
|
#ifdef USE_IN_LIBIO
|
#ifdef USE_IN_LIBIO
|
# include <libio/libioP.h>
|
# include <libio/libioP.h>
|
# define __getdelim(line, len, c, fp) _IO_getdelim (line, len, c, fp)
|
# define __getdelim(line, len, c, fp) _IO_getdelim (line, len, c, fp)
|
#endif
|
#endif
|
|
|
|
|
/* Value of the GCONV_PATH environment variable. */
|
/* Value of the GCONV_PATH environment variable. */
|
const char *__gconv_path_envvar;
|
const char *__gconv_path_envvar;
|
|
|
|
|
/* Test whether there is already a matching module known. */
|
/* Test whether there is already a matching module known. */
|
static int
|
static int
|
internal_function
|
internal_function
|
detect_conflict (const char *alias)
|
detect_conflict (const char *alias)
|
{
|
{
|
struct gconv_module *node = __gconv_modules_db;
|
struct gconv_module *node = __gconv_modules_db;
|
|
|
while (node != NULL)
|
while (node != NULL)
|
{
|
{
|
int cmpres = strcmp (alias, node->from_string);
|
int cmpres = strcmp (alias, node->from_string);
|
|
|
if (cmpres == 0)
|
if (cmpres == 0)
|
/* We have a conflict. */
|
/* We have a conflict. */
|
return 1;
|
return 1;
|
else if (cmpres < 0)
|
else if (cmpres < 0)
|
node = node->left;
|
node = node->left;
|
else
|
else
|
node = node->right;
|
node = node->right;
|
}
|
}
|
|
|
return node != NULL;
|
return node != NULL;
|
}
|
}
|
|
|
|
|
/* Add new alias. */
|
/* Add new alias. */
|
static inline void
|
static inline void
|
add_alias (char *rp, void *modules)
|
add_alias (char *rp, void *modules)
|
{
|
{
|
/* We now expect two more string. The strings are normalized
|
/* We now expect two more string. The strings are normalized
|
(converted to UPPER case) and strored in the alias database. */
|
(converted to UPPER case) and strored in the alias database. */
|
struct gconv_alias *new_alias;
|
struct gconv_alias *new_alias;
|
char *from, *to, *wp;
|
char *from, *to, *wp;
|
char old_locale[20], *old_locale_p;
|
char old_locale[20], *old_locale_p;
|
|
|
/* Set locale to default C locale. */
|
/* Set locale to default C locale. */
|
old_locale_p = setlocale(LC_ALL, "C");
|
old_locale_p = setlocale(LC_ALL, "C");
|
strncpy(old_locale, old_locale_p, 20);
|
strncpy(old_locale, old_locale_p, 20);
|
|
|
while (isspace (*rp))
|
while (isspace (*rp))
|
++rp;
|
++rp;
|
from = wp = rp;
|
from = wp = rp;
|
while (*rp != '\0' && !isspace (*rp))
|
while (*rp != '\0' && !isspace (*rp))
|
*wp++ = toupper (*rp++);
|
*wp++ = toupper (*rp++);
|
if (*rp == '\0')
|
if (*rp == '\0')
|
{
|
{
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
/* There is no `to' string on the line. Ignore it. */
|
/* There is no `to' string on the line. Ignore it. */
|
return;
|
return;
|
}
|
}
|
*wp++ = '\0';
|
*wp++ = '\0';
|
to = ++rp;
|
to = ++rp;
|
while (isspace (*rp))
|
while (isspace (*rp))
|
++rp;
|
++rp;
|
while (*rp != '\0' && !isspace (*rp))
|
while (*rp != '\0' && !isspace (*rp))
|
*wp++ = toupper (*rp++);
|
*wp++ = toupper (*rp++);
|
if (to == wp)
|
if (to == wp)
|
{
|
{
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
/* No `to' string, ignore the line. */
|
/* No `to' string, ignore the line. */
|
return;
|
return;
|
}
|
}
|
*wp++ = '\0';
|
*wp++ = '\0';
|
|
|
/* Test whether this alias conflicts with any available module. */
|
/* Test whether this alias conflicts with any available module. */
|
if (detect_conflict (from))
|
if (detect_conflict (from))
|
{
|
{
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
/* It does conflict, don't add the alias. */
|
/* It does conflict, don't add the alias. */
|
return;
|
return;
|
}
|
}
|
|
|
new_alias = (struct gconv_alias *) malloc (sizeof (struct gconv_alias) + (wp - from));
|
new_alias = (struct gconv_alias *) malloc (sizeof (struct gconv_alias) + (wp - from));
|
if (new_alias != NULL)
|
if (new_alias != NULL)
|
{
|
{
|
void **inserted;
|
void **inserted;
|
|
|
new_alias->fromname = memcpy ((char *) new_alias
|
new_alias->fromname = memcpy ((char *) new_alias
|
+ sizeof (struct gconv_alias),
|
+ sizeof (struct gconv_alias),
|
from, wp - from);
|
from, wp - from);
|
new_alias->toname = new_alias->fromname + (to - from);
|
new_alias->toname = new_alias->fromname + (to - from);
|
|
|
inserted = (void **) tsearch (new_alias, &__gconv_alias_db,
|
inserted = (void **) tsearch (new_alias, &__gconv_alias_db,
|
__gconv_alias_compare);
|
__gconv_alias_compare);
|
if (inserted == NULL || *inserted != new_alias)
|
if (inserted == NULL || *inserted != new_alias)
|
/* Something went wrong, free this entry. */
|
/* Something went wrong, free this entry. */
|
free (new_alias);
|
free (new_alias);
|
}
|
}
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
}
|
}
|
|
|
|
|
/* Insert a data structure for a new module in the search tree. */
|
/* Insert a data structure for a new module in the search tree. */
|
static inline void
|
static inline void
|
internal_function
|
internal_function
|
insert_module (struct gconv_module *newp, int tobefreed)
|
insert_module (struct gconv_module *newp, int tobefreed)
|
{
|
{
|
struct gconv_module **rootp = &__gconv_modules_db;
|
struct gconv_module **rootp = &__gconv_modules_db;
|
|
|
while (*rootp != NULL)
|
while (*rootp != NULL)
|
{
|
{
|
struct gconv_module *root = *rootp;
|
struct gconv_module *root = *rootp;
|
int cmpres;
|
int cmpres;
|
|
|
cmpres = strcmp (newp->from_string, root->from_string);
|
cmpres = strcmp (newp->from_string, root->from_string);
|
if (cmpres == 0)
|
if (cmpres == 0)
|
{
|
{
|
/* Both strings are identical. Insert the string at the
|
/* Both strings are identical. Insert the string at the
|
end of the `same' list if it is not already there. */
|
end of the `same' list if it is not already there. */
|
while (strcmp (newp->from_string, root->from_string) != 0
|
while (strcmp (newp->from_string, root->from_string) != 0
|
|| strcmp (newp->to_string, root->to_string) != 0)
|
|| strcmp (newp->to_string, root->to_string) != 0)
|
{
|
{
|
rootp = &root->same;
|
rootp = &root->same;
|
root = *rootp;
|
root = *rootp;
|
if (root == NULL)
|
if (root == NULL)
|
break;
|
break;
|
}
|
}
|
|
|
if (root != NULL)
|
if (root != NULL)
|
{
|
{
|
/* This is a no new conversion. But maybe the cost is
|
/* This is a no new conversion. But maybe the cost is
|
better. */
|
better. */
|
if (newp->cost_hi < root->cost_hi
|
if (newp->cost_hi < root->cost_hi
|
|| (newp->cost_hi == root->cost_hi
|
|| (newp->cost_hi == root->cost_hi
|
&& newp->cost_lo < root->cost_lo))
|
&& newp->cost_lo < root->cost_lo))
|
{
|
{
|
newp->left = root->left;
|
newp->left = root->left;
|
newp->right = root->right;
|
newp->right = root->right;
|
newp->same = root->same;
|
newp->same = root->same;
|
*rootp = newp;
|
*rootp = newp;
|
|
|
free (root);
|
free (root);
|
}
|
}
|
else if (tobefreed)
|
else if (tobefreed)
|
free (newp);
|
free (newp);
|
return;
|
return;
|
}
|
}
|
|
|
break;
|
break;
|
}
|
}
|
else if (cmpres < 0)
|
else if (cmpres < 0)
|
rootp = &root->left;
|
rootp = &root->left;
|
else
|
else
|
rootp = &root->right;
|
rootp = &root->right;
|
}
|
}
|
|
|
/* Plug in the new node here. */
|
/* Plug in the new node here. */
|
*rootp = newp;
|
*rootp = newp;
|
}
|
}
|
|
|
|
|
/* Add new module. */
|
/* Add new module. */
|
static void
|
static void
|
internal_function
|
internal_function
|
add_module (char *rp, const char *directory, size_t dir_len, void **modules,
|
add_module (char *rp, const char *directory, size_t dir_len, void **modules,
|
size_t *nmodules, int modcounter)
|
size_t *nmodules, int modcounter)
|
{
|
{
|
/* We expect now
|
/* We expect now
|
1. `from' name
|
1. `from' name
|
2. `to' name
|
2. `to' name
|
3. filename of the module
|
3. filename of the module
|
4. an optional cost value
|
4. an optional cost value
|
*/
|
*/
|
struct gconv_alias fake_alias;
|
struct gconv_alias fake_alias;
|
struct gconv_module *new_module;
|
struct gconv_module *new_module;
|
char *from, *to, *module, *wp;
|
char *from, *to, *module, *wp;
|
int need_ext;
|
int need_ext;
|
int cost_hi;
|
int cost_hi;
|
char old_locale[20], *old_locale_p;
|
char old_locale[20], *old_locale_p;
|
char *old;
|
char *old;
|
size_t len;
|
size_t len;
|
char *new;
|
char *new;
|
|
|
/* Set locale to default C locale. */
|
/* Set locale to default C locale. */
|
old_locale_p = setlocale(LC_ALL, "C");
|
old_locale_p = setlocale(LC_ALL, "C");
|
strncpy(old_locale, old_locale_p, 20);
|
strncpy(old_locale, old_locale_p, 20);
|
|
|
while (isspace (*rp))
|
while (isspace (*rp))
|
++rp;
|
++rp;
|
from = rp;
|
from = rp;
|
while (*rp != '\0' && !isspace (*rp))
|
while (*rp != '\0' && !isspace (*rp))
|
{
|
{
|
*rp = toupper (*rp);
|
*rp = toupper (*rp);
|
++rp;
|
++rp;
|
}
|
}
|
if (*rp == '\0')
|
if (*rp == '\0')
|
{
|
{
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
return;
|
return;
|
}
|
}
|
*rp++ = '\0';
|
*rp++ = '\0';
|
to = wp = rp;
|
to = wp = rp;
|
while (isspace (*rp))
|
while (isspace (*rp))
|
{
|
{
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
++rp;
|
++rp;
|
}
|
}
|
while (*rp != '\0' && !isspace (*rp))
|
while (*rp != '\0' && !isspace (*rp))
|
*wp++ = toupper (*rp++);
|
*wp++ = toupper (*rp++);
|
if (*rp == '\0')
|
if (*rp == '\0')
|
{
|
{
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
return;
|
return;
|
}
|
}
|
*wp++ = '\0';
|
*wp++ = '\0';
|
do
|
do
|
++rp;
|
++rp;
|
while (isspace (*rp));
|
while (isspace (*rp));
|
module = wp;
|
module = wp;
|
while (*rp != '\0' && !isspace (*rp))
|
while (*rp != '\0' && !isspace (*rp))
|
*wp++ = *rp++;
|
*wp++ = *rp++;
|
if (*rp == '\0')
|
if (*rp == '\0')
|
{
|
{
|
/* There is no cost, use one by default. */
|
/* There is no cost, use one by default. */
|
*wp++ = '\0';
|
*wp++ = '\0';
|
cost_hi = 1;
|
cost_hi = 1;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* There might be a cost value. */
|
/* There might be a cost value. */
|
char *endp;
|
char *endp;
|
|
|
*wp++ = '\0';
|
*wp++ = '\0';
|
cost_hi = strtol (rp, &endp, 10);
|
cost_hi = strtol (rp, &endp, 10);
|
if (rp == endp || cost_hi < 1)
|
if (rp == endp || cost_hi < 1)
|
/* No useful information. */
|
/* No useful information. */
|
cost_hi = 1;
|
cost_hi = 1;
|
}
|
}
|
|
|
if (module[0] == '\0')
|
if (module[0] == '\0')
|
{
|
{
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
/* No module name given. */
|
/* No module name given. */
|
return;
|
return;
|
}
|
}
|
if (module[0] == '/')
|
if (module[0] == '/')
|
dir_len = 0;
|
dir_len = 0;
|
|
|
/* See whether we must add the ending. */
|
/* See whether we must add the ending. */
|
need_ext = 0;
|
need_ext = 0;
|
if (wp - module < (ptrdiff_t) sizeof (gconv_module_ext)
|
if (wp - module < (ptrdiff_t) sizeof (gconv_module_ext)
|
|| memcmp (wp - sizeof (gconv_module_ext), gconv_module_ext,
|
|| memcmp (wp - sizeof (gconv_module_ext), gconv_module_ext,
|
sizeof (gconv_module_ext)) != 0)
|
sizeof (gconv_module_ext)) != 0)
|
/* We must add the module extension. */
|
/* We must add the module extension. */
|
need_ext = sizeof (gconv_module_ext) - 1;
|
need_ext = sizeof (gconv_module_ext) - 1;
|
|
|
/* See whether we have already an alias with this name defined. */
|
/* See whether we have already an alias with this name defined. */
|
old = from;
|
old = from;
|
len = strnlen (old, to - from);
|
len = strnlen (old, to - from);
|
new = (char *) alloca (len + 1);
|
new = (char *) alloca (len + 1);
|
new[len] = '\0';
|
new[len] = '\0';
|
fake_alias.fromname = (char *) memcpy (new, old, len);
|
fake_alias.fromname = (char *) memcpy (new, old, len);
|
|
|
if (tfind (&fake_alias, &__gconv_alias_db, __gconv_alias_compare) != NULL)
|
if (tfind (&fake_alias, &__gconv_alias_db, __gconv_alias_compare) != NULL)
|
{
|
{
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
/* This module duplicates an alias. */
|
/* This module duplicates an alias. */
|
return;
|
return;
|
}
|
}
|
|
|
new_module = (struct gconv_module *) calloc (1,
|
new_module = (struct gconv_module *) calloc (1,
|
sizeof (struct gconv_module)
|
sizeof (struct gconv_module)
|
+ (wp - from)
|
+ (wp - from)
|
+ dir_len + need_ext);
|
+ dir_len + need_ext);
|
if (new_module != NULL)
|
if (new_module != NULL)
|
{
|
{
|
char *tmp;
|
char *tmp;
|
|
|
new_module->from_string = tmp = (char *) (new_module + 1);
|
new_module->from_string = tmp = (char *) (new_module + 1);
|
tmp = memcpy (tmp, from, to - from);
|
tmp = memcpy (tmp, from, to - from);
|
tmp += (to - from);
|
tmp += (to - from);
|
|
|
new_module->to_string = tmp;
|
new_module->to_string = tmp;
|
tmp = memcpy (tmp, to, module - to);
|
tmp = memcpy (tmp, to, module - to);
|
tmp += (module - to);
|
tmp += (module - to);
|
|
|
new_module->cost_hi = cost_hi;
|
new_module->cost_hi = cost_hi;
|
new_module->cost_lo = modcounter;
|
new_module->cost_lo = modcounter;
|
|
|
new_module->module_name = tmp;
|
new_module->module_name = tmp;
|
|
|
if (dir_len != 0)
|
if (dir_len != 0)
|
{
|
{
|
tmp = memcpy (tmp, directory, dir_len);
|
tmp = memcpy (tmp, directory, dir_len);
|
tmp += dir_len;
|
tmp += dir_len;
|
}
|
}
|
|
|
tmp = memcpy (tmp, module, wp - module);
|
tmp = memcpy (tmp, module, wp - module);
|
tmp += (wp - module);
|
tmp += (wp - module);
|
|
|
if (need_ext)
|
if (need_ext)
|
memcpy (tmp - 1, gconv_module_ext, sizeof (gconv_module_ext));
|
memcpy (tmp - 1, gconv_module_ext, sizeof (gconv_module_ext));
|
|
|
/* Now insert the new module data structure in our search tree. */
|
/* Now insert the new module data structure in our search tree. */
|
insert_module (new_module, 1);
|
insert_module (new_module, 1);
|
}
|
}
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
}
|
}
|
|
|
|
|
/* Read the next configuration file. */
|
/* Read the next configuration file. */
|
static void
|
static void
|
internal_function
|
internal_function
|
read_conf_file (const char *filename, const char *directory, size_t dir_len,
|
read_conf_file (const char *filename, const char *directory, size_t dir_len,
|
void **modules, size_t *nmodules)
|
void **modules, size_t *nmodules)
|
{
|
{
|
FILE *fp = fopen (filename, "r");
|
FILE *fp = fopen (filename, "r");
|
char *line = NULL;
|
char *line = NULL;
|
size_t line_len = 0;
|
size_t line_len = 0;
|
static int modcounter;
|
static int modcounter;
|
char old_locale[20], *old_locale_p;
|
char old_locale[20], *old_locale_p;
|
|
|
/* Don't complain if a file is not present or readable, simply silently
|
/* Don't complain if a file is not present or readable, simply silently
|
ignore it. */
|
ignore it. */
|
if (fp == NULL)
|
if (fp == NULL)
|
return;
|
return;
|
|
|
/* Set locale to default C locale. */
|
/* Set locale to default C locale. */
|
old_locale_p = setlocale(LC_ALL, "C");
|
old_locale_p = setlocale(LC_ALL, "C");
|
strncpy(old_locale, old_locale_p, 20);
|
strncpy(old_locale, old_locale_p, 20);
|
|
|
/* Process the known entries of the file. Comments start with `#' and
|
/* Process the known entries of the file. Comments start with `#' and
|
end with the end of the line. Empty lines are ignored. */
|
end with the end of the line. Empty lines are ignored. */
|
while (!feof (fp))
|
while (!feof (fp))
|
{
|
{
|
char *rp, *endp, *word;
|
char *rp, *endp, *word;
|
ssize_t n = __getdelim (&line, &line_len, '\n', fp);
|
ssize_t n = __getdelim (&line, &line_len, '\n', fp);
|
if (n < 0)
|
if (n < 0)
|
/* An error occurred. */
|
/* An error occurred. */
|
break;
|
break;
|
|
|
rp = line;
|
rp = line;
|
/* Terminate the line (excluding comments or newline) by an NUL byte
|
/* Terminate the line (excluding comments or newline) by an NUL byte
|
to simplify the following code. */
|
to simplify the following code. */
|
endp = strchr (rp, '#');
|
endp = strchr (rp, '#');
|
if (endp != NULL)
|
if (endp != NULL)
|
*endp = '\0';
|
*endp = '\0';
|
else
|
else
|
if (rp[n - 1] == '\n')
|
if (rp[n - 1] == '\n')
|
rp[n - 1] = '\0';
|
rp[n - 1] = '\0';
|
|
|
while (isspace (*rp))
|
while (isspace (*rp))
|
++rp;
|
++rp;
|
|
|
/* If this is an empty line go on with the next one. */
|
/* If this is an empty line go on with the next one. */
|
if (rp == endp)
|
if (rp == endp)
|
continue;
|
continue;
|
|
|
word = rp;
|
word = rp;
|
while (*rp != '\0' && !isspace (*rp))
|
while (*rp != '\0' && !isspace (*rp))
|
++rp;
|
++rp;
|
|
|
if (rp - word == sizeof ("alias") - 1
|
if (rp - word == sizeof ("alias") - 1
|
&& memcmp (word, "alias", sizeof ("alias") - 1) == 0)
|
&& memcmp (word, "alias", sizeof ("alias") - 1) == 0)
|
add_alias (rp, *modules);
|
add_alias (rp, *modules);
|
else if (rp - word == sizeof ("module") - 1
|
else if (rp - word == sizeof ("module") - 1
|
&& memcmp (word, "module", sizeof ("module") - 1) == 0)
|
&& memcmp (word, "module", sizeof ("module") - 1) == 0)
|
add_module (rp, directory, dir_len, modules, nmodules, modcounter++);
|
add_module (rp, directory, dir_len, modules, nmodules, modcounter++);
|
/* else */
|
/* else */
|
/* Otherwise ignore the line. */
|
/* Otherwise ignore the line. */
|
}
|
}
|
|
|
free (line);
|
free (line);
|
|
|
fclose (fp);
|
fclose (fp);
|
|
|
setlocale(LC_ALL, old_locale);
|
setlocale(LC_ALL, old_locale);
|
}
|
}
|
|
|
|
|
/* Determine the directories we are looking for data in. */
|
/* Determine the directories we are looking for data in. */
|
void
|
void
|
__gconv_get_path (void)
|
__gconv_get_path (void)
|
{
|
{
|
struct path_elem *result;
|
struct path_elem *result;
|
__LOCK_INIT(static, path_lock);
|
__LOCK_INIT(static, path_lock);
|
|
|
#ifdef HAVE_DD_LOCK
|
#ifdef HAVE_DD_LOCK
|
__lock_acquire(path_lock);
|
__lock_acquire(path_lock);
|
#endif
|
#endif
|
|
|
/* Make sure there wasn't a second thread doing it already. */
|
/* Make sure there wasn't a second thread doing it already. */
|
result = (struct path_elem *) __gconv_path_elem;
|
result = (struct path_elem *) __gconv_path_elem;
|
if (result == NULL)
|
if (result == NULL)
|
{
|
{
|
/* Determine the complete path first. */
|
/* Determine the complete path first. */
|
char *gconv_path;
|
char *gconv_path;
|
size_t gconv_path_len;
|
size_t gconv_path_len;
|
char *elem;
|
char *elem;
|
char *oldp;
|
char *oldp;
|
char *cp;
|
char *cp;
|
int nelems;
|
int nelems;
|
char *cwd;
|
char *cwd;
|
size_t cwdlen;
|
size_t cwdlen;
|
|
|
if (__gconv_path_envvar == NULL)
|
if (__gconv_path_envvar == NULL)
|
{
|
{
|
char * old = default_gconv_path;
|
char * old = default_gconv_path;
|
size_t len = strlen (old) + 1;
|
size_t len = strlen (old) + 1;
|
char *new = (char *) alloca (len);
|
char *new = (char *) alloca (len);
|
|
|
/* No user-defined path. Make a modifiable copy of the
|
/* No user-defined path. Make a modifiable copy of the
|
default path. */
|
default path. */
|
gconv_path = (char *) memcpy (new, old, len);
|
gconv_path = (char *) memcpy (new, old, len);
|
gconv_path_len = sizeof (default_gconv_path);
|
gconv_path_len = sizeof (default_gconv_path);
|
cwd = NULL;
|
cwd = NULL;
|
cwdlen = 0;
|
cwdlen = 0;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* Append the default path to the user-defined path. */
|
/* Append the default path to the user-defined path. */
|
size_t user_len = strlen (__gconv_path_envvar);
|
size_t user_len = strlen (__gconv_path_envvar);
|
char *tmp;
|
char *tmp;
|
|
|
gconv_path_len = user_len + 1 + sizeof (default_gconv_path);
|
gconv_path_len = user_len + 1 + sizeof (default_gconv_path);
|
gconv_path = alloca (gconv_path_len);
|
gconv_path = alloca (gconv_path_len);
|
tmp = memcpy (gconv_path, __gconv_path_envvar,
|
tmp = memcpy (gconv_path, __gconv_path_envvar,
|
user_len);
|
user_len);
|
tmp += user_len;
|
tmp += user_len;
|
memcpy (tmp, ":", 1);
|
memcpy (tmp, ":", 1);
|
tmp += 1;
|
tmp += 1;
|
memcpy (tmp,
|
memcpy (tmp,
|
default_gconv_path, sizeof (default_gconv_path));
|
default_gconv_path, sizeof (default_gconv_path));
|
|
|
cwd = getcwd (NULL, 0);
|
cwd = getcwd (NULL, 0);
|
cwdlen = strlen (cwd);
|
cwdlen = strlen (cwd);
|
}
|
}
|
assert (default_gconv_path[0] == '/');
|
assert (default_gconv_path[0] == '/');
|
|
|
/* In a first pass we calculate the number of elements. */
|
/* In a first pass we calculate the number of elements. */
|
oldp = NULL;
|
oldp = NULL;
|
cp = strchr (gconv_path, ':');
|
cp = strchr (gconv_path, ':');
|
nelems = 1;
|
nelems = 1;
|
while (cp != NULL)
|
while (cp != NULL)
|
{
|
{
|
if (cp != oldp + 1)
|
if (cp != oldp + 1)
|
++nelems;
|
++nelems;
|
oldp = cp;
|
oldp = cp;
|
cp = strchr (cp + 1, ':');
|
cp = strchr (cp + 1, ':');
|
}
|
}
|
|
|
/* Allocate the memory for the result. */
|
/* Allocate the memory for the result. */
|
result = (struct path_elem *) malloc ((nelems + 1)
|
result = (struct path_elem *) malloc ((nelems + 1)
|
* sizeof (struct path_elem)
|
* sizeof (struct path_elem)
|
+ gconv_path_len + nelems
|
+ gconv_path_len + nelems
|
+ (nelems - 1) * (cwdlen + 1));
|
+ (nelems - 1) * (cwdlen + 1));
|
if (result != NULL)
|
if (result != NULL)
|
{
|
{
|
char *strspace = (char *) &result[nelems + 1];
|
char *strspace = (char *) &result[nelems + 1];
|
int n = 0;
|
int n = 0;
|
|
|
/* Separate the individual parts. */
|
/* Separate the individual parts. */
|
__gconv_max_path_elem_len = 0;
|
__gconv_max_path_elem_len = 0;
|
elem = strtok_r (gconv_path, ":", &gconv_path);
|
elem = strtok_r (gconv_path, ":", &gconv_path);
|
assert (elem != NULL);
|
assert (elem != NULL);
|
do
|
do
|
{
|
{
|
result[n].name = strspace;
|
result[n].name = strspace;
|
if (elem[0] != '/')
|
if (elem[0] != '/')
|
{
|
{
|
assert (cwd != NULL);
|
assert (cwd != NULL);
|
strspace = memcpy (strspace, cwd, cwdlen);
|
strspace = memcpy (strspace, cwd, cwdlen);
|
strspace += cwdlen;
|
strspace += cwdlen;
|
*strspace++ = '/';
|
*strspace++ = '/';
|
}
|
}
|
strspace = strcpy (strspace, elem);
|
strspace = strcpy (strspace, elem);
|
while(*strspace != '\0') strspace++;
|
while(*strspace != '\0') strspace++;
|
|
|
if (strspace[-1] != '/')
|
if (strspace[-1] != '/')
|
*strspace++ = '/';
|
*strspace++ = '/';
|
|
|
result[n].len = strspace - result[n].name;
|
result[n].len = strspace - result[n].name;
|
if (result[n].len > __gconv_max_path_elem_len)
|
if (result[n].len > __gconv_max_path_elem_len)
|
__gconv_max_path_elem_len = result[n].len;
|
__gconv_max_path_elem_len = result[n].len;
|
|
|
*strspace++ = '\0';
|
*strspace++ = '\0';
|
++n;
|
++n;
|
}
|
}
|
while ((elem = strtok_r (NULL, ":", &gconv_path)) != NULL);
|
while ((elem = strtok_r (NULL, ":", &gconv_path)) != NULL);
|
|
|
result[n].name = NULL;
|
result[n].name = NULL;
|
result[n].len = 0;
|
result[n].len = 0;
|
}
|
}
|
|
|
__gconv_path_elem = result ?: (struct path_elem *) &empty_path_elem;
|
__gconv_path_elem = result ?: (struct path_elem *) &empty_path_elem;
|
|
|
if (cwd != NULL)
|
if (cwd != NULL)
|
free (cwd);
|
free (cwd);
|
}
|
}
|
|
|
#ifdef HAVE_DD_LOCK
|
#ifdef HAVE_DD_LOCK
|
__lock_release(path_lock);
|
__lock_release(path_lock);
|
#endif
|
#endif
|
}
|
}
|
|
|
|
|
/* Read all configuration files found in the user-specified and the default
|
/* Read all configuration files found in the user-specified and the default
|
path. */
|
path. */
|
void
|
void
|
__gconv_read_conf (void)
|
__gconv_read_conf (void)
|
{
|
{
|
void *modules = NULL;
|
void *modules = NULL;
|
size_t nmodules = 0;
|
size_t nmodules = 0;
|
int save_errno = errno;
|
int save_errno = errno;
|
size_t cnt;
|
size_t cnt;
|
char *filename;
|
char *filename;
|
char *tmp;
|
char *tmp;
|
const char *elem;
|
const char *elem;
|
size_t elem_len;
|
size_t elem_len;
|
|
|
/* First see whether we should use the cache. */
|
/* First see whether we should use the cache. */
|
if (__gconv_load_cache () == 0)
|
if (__gconv_load_cache () == 0)
|
{
|
{
|
/* Yes, we are done. */
|
/* Yes, we are done. */
|
__set_errno (save_errno);
|
__set_errno (save_errno);
|
return;
|
return;
|
}
|
}
|
|
|
#ifndef STATIC_GCONV
|
#ifndef STATIC_GCONV
|
/* Find out where we have to look. */
|
/* Find out where we have to look. */
|
if (__gconv_path_elem == NULL)
|
if (__gconv_path_elem == NULL)
|
__gconv_get_path ();
|
__gconv_get_path ();
|
|
|
for (cnt = 0; __gconv_path_elem[cnt].name != NULL; ++cnt)
|
for (cnt = 0; __gconv_path_elem[cnt].name != NULL; ++cnt)
|
{
|
{
|
elem = __gconv_path_elem[cnt].name;
|
elem = __gconv_path_elem[cnt].name;
|
elem_len = __gconv_path_elem[cnt].len;
|
elem_len = __gconv_path_elem[cnt].len;
|
|
|
/* No slash needs to be inserted between elem and gconv_conf_filename;
|
/* No slash needs to be inserted between elem and gconv_conf_filename;
|
elem already ends in a slash. */
|
elem already ends in a slash. */
|
filename = alloca (elem_len + sizeof (gconv_conf_filename));
|
filename = alloca (elem_len + sizeof (gconv_conf_filename));
|
tmp = memcpy (filename, elem, elem_len);
|
tmp = memcpy (filename, elem, elem_len);
|
tmp += elem_len;
|
tmp += elem_len;
|
memcpy (tmp, gconv_conf_filename, sizeof (gconv_conf_filename));
|
memcpy (tmp, gconv_conf_filename, sizeof (gconv_conf_filename));
|
|
|
/* Read the next configuration file. */
|
/* Read the next configuration file. */
|
read_conf_file (filename, elem, elem_len, &modules, &nmodules);
|
read_conf_file (filename, elem, elem_len, &modules, &nmodules);
|
}
|
}
|
#endif
|
#endif
|
|
|
/* Add the internal modules. */
|
/* Add the internal modules. */
|
for (cnt = 0; cnt < sizeof (builtin_modules) / sizeof (builtin_modules[0]);
|
for (cnt = 0; cnt < sizeof (builtin_modules) / sizeof (builtin_modules[0]);
|
++cnt)
|
++cnt)
|
{
|
{
|
struct gconv_alias fake_alias;
|
struct gconv_alias fake_alias;
|
|
|
fake_alias.fromname = (char *) builtin_modules[cnt].from_string;
|
fake_alias.fromname = (char *) builtin_modules[cnt].from_string;
|
|
|
if (tfind (&fake_alias, &__gconv_alias_db, __gconv_alias_compare)
|
if (tfind (&fake_alias, &__gconv_alias_db, __gconv_alias_compare)
|
!= NULL)
|
!= NULL)
|
/* It'll conflict so don't add it. */
|
/* It'll conflict so don't add it. */
|
continue;
|
continue;
|
|
|
insert_module (&builtin_modules[cnt], 0);
|
insert_module (&builtin_modules[cnt], 0);
|
}
|
}
|
|
|
/* Add aliases for builtin conversions. */
|
/* Add aliases for builtin conversions. */
|
cnt = sizeof (builtin_aliases) / sizeof (builtin_aliases[0]);
|
cnt = sizeof (builtin_aliases) / sizeof (builtin_aliases[0]);
|
while (cnt > 0)
|
while (cnt > 0)
|
{
|
{
|
char * old = builtin_aliases[--cnt];
|
char * old = builtin_aliases[--cnt];
|
size_t len = strlen (old) + 1;
|
size_t len = strlen (old) + 1;
|
char *new = (char *) alloca (len);
|
char *new = (char *) alloca (len);
|
char *copy = (char *) memcpy (new, old, len);
|
char *copy = (char *) memcpy (new, old, len);
|
|
|
add_alias (copy, modules);
|
add_alias (copy, modules);
|
}
|
}
|
|
|
/* Restore the error number. */
|
/* Restore the error number. */
|
__set_errno (save_errno);
|
__set_errno (save_errno);
|
}
|
}
|
|
|
|
|
|
|
/* Free all resources if necessary. */
|
/* Free all resources if necessary. */
|
static void __attribute__ ((unused))
|
static void __attribute__ ((unused))
|
free_mem (void)
|
free_mem (void)
|
{
|
{
|
if (__gconv_path_elem != NULL && __gconv_path_elem != &empty_path_elem)
|
if (__gconv_path_elem != NULL && __gconv_path_elem != &empty_path_elem)
|
free ((void *) __gconv_path_elem);
|
free ((void *) __gconv_path_elem);
|
}
|
}
|
|
|
text_set_element (__libc_subfreeres, free_mem);
|
text_set_element (__libc_subfreeres, free_mem);
|
|
|
