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Make initdb throw error for bad locale values. 

Historically we've printed a complaint for a bad locale setting, but then
fallen back to the environment default.  Per discussion, this is not such
a great idea, because rectifying an erroneous locale choice post-initdb
(perhaps long after data has been loaded) could be enormously expensive.
Better to complain and give the user a chance to double-check things.

The behavior was particularly bad if the bad setting came from environment
variables rather than a bogus command-line switch: in that case not only
was there a fallback to C/SQL_ASCII, but the printed complaint was quite
unhelpful.  It's hard to be entirely sure what variables setlocale looked
at, but we can at least give a hint where the problem might be.

Per a complaint from Tomas Vondra.
This commit is contained in:
Tom Lane 2014-05-14 11:51:10 -04:00
parent eb6144bb44
commit 31a263237f
1 changed files with 47 additions and 39 deletions
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86
src/bin/initdb/initdb.c
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@ -252,7 +252,7 @@ static void trapsig(int signum);
static void check_ok(void);
static char *escape_quotes(const char *src);
static int locale_date_order(const char *locale);
static bool check_locale_name(int category, const char *locale,
static void check_locale_name(int category, const char *locale,
char **canonname);
static bool check_locale_encoding(const char *locale, int encoding);
static void setlocales(void);
@ -2529,7 +2529,7 @@ locale_date_order(const char *locale)
}
/*
* Is the locale name valid for the locale category?
* Verify that locale name is valid for the locale category.
*
* If successful, and canonname isn't NULL, a malloc'd copy of the locale's
* canonical name is stored there. This is especially useful for figuring out
@ -2540,7 +2540,7 @@ locale_date_order(const char *locale)
*
* this should match the backend's check_locale() function
*/
static bool
static void
check_locale_name(int category, const char *locale, char **canonname)
{
char *save;
@ -2551,7 +2551,11 @@ check_locale_name(int category, const char *locale, char **canonname)
save = setlocale(category, NULL);
if (!save)
return false; /* won't happen, we hope */
{
fprintf(stderr, _("%s: setlocale failed\n"),
progname);
exit(1);
}
/* save may be pointing at a modifiable scratch variable, so copy it. */
save = pg_strdup(save);
@ -2565,16 +2569,34 @@ check_locale_name(int category, const char *locale, char **canonname)
/* restore old value. */
if (!setlocale(category, save))
{
fprintf(stderr, _("%s: failed to restore old locale \"%s\"\n"),
progname, save);
exit(1);
}
free(save);
/* should we exit here? */
/* complain if locale wasn't valid */
if (res == NULL)
fprintf(stderr, _("%s: invalid locale name \"%s\"\n"),
progname, locale);
return (res != NULL);
{
if (*locale)
fprintf(stderr, _("%s: invalid locale name \"%s\"\n"),
progname, locale);
else
{
/*
* If no relevant switch was given on command line, locale is an
* empty string, which is not too helpful to report. Presumably
* setlocale() found something it did not like in the environment.
* Ideally we'd report the bad environment variable, but since
* setlocale's behavior is implementation-specific, it's hard to
* be sure what it didn't like. Print a safe generic message.
*/
fprintf(stderr, _("%s: invalid locale settings; check LANG and LC_* environment variables\n"),
progname);
}
exit(1);
}
}
/*
@ -2642,41 +2664,27 @@ setlocales(void)
}
/*
* canonicalize locale names, and override any missing/invalid values from
* our current environment
* canonicalize locale names, and obtain any missing values from our
* current environment
*/
if (check_locale_name(LC_CTYPE, lc_ctype, &canonname))
lc_ctype = canonname;
else
lc_ctype = pg_strdup(setlocale(LC_CTYPE, NULL));
if (check_locale_name(LC_COLLATE, lc_collate, &canonname))
lc_collate = canonname;
else
lc_collate = pg_strdup(setlocale(LC_COLLATE, NULL));
if (check_locale_name(LC_NUMERIC, lc_numeric, &canonname))
lc_numeric = canonname;
else
lc_numeric = pg_strdup(setlocale(LC_NUMERIC, NULL));
if (check_locale_name(LC_TIME, lc_time, &canonname))
lc_time = canonname;
else
lc_time = pg_strdup(setlocale(LC_TIME, NULL));
if (check_locale_name(LC_MONETARY, lc_monetary, &canonname))
lc_monetary = canonname;
else
lc_monetary = pg_strdup(setlocale(LC_MONETARY, NULL));
check_locale_name(LC_CTYPE, lc_ctype, &canonname);
lc_ctype = canonname;
check_locale_name(LC_COLLATE, lc_collate, &canonname);
lc_collate = canonname;
check_locale_name(LC_NUMERIC, lc_numeric, &canonname);
lc_numeric = canonname;
check_locale_name(LC_TIME, lc_time, &canonname);
lc_time = canonname;
check_locale_name(LC_MONETARY, lc_monetary, &canonname);
lc_monetary = canonname;
#if defined(LC_MESSAGES) && !defined(WIN32)
if (check_locale_name(LC_MESSAGES, lc_messages, &canonname))
lc_messages = canonname;
else
lc_messages = pg_strdup(setlocale(LC_MESSAGES, NULL));
check_locale_name(LC_MESSAGES, lc_messages, &canonname);
lc_messages = canonname;
#else
/* when LC_MESSAGES is not available, use the LC_CTYPE setting */
if (check_locale_name(LC_CTYPE, lc_messages, &canonname))
lc_messages = canonname;
else
lc_messages = pg_strdup(setlocale(LC_CTYPE, NULL));
check_locale_name(LC_CTYPE, lc_messages, &canonname);
lc_messages = canonname;
#endif
}