* pq_sendcountedtext - append a counted text string (with character set conversion)
* pq_sendtext - append a text string (with conversion)
* pq_sendstring - append a null-terminated text string (with conversion)
+ * pq_send_ascii_string - append a null-terminated text string (without conversion)
* pq_endmessage - send the completed message to the frontend
* Note: it is also possible to append data to the StringInfo buffer using
* the regular StringInfo routines, but this is discouraged since required
pq_sendstring(StringInfo buf, const char *str)
{
int slen = strlen(str);
-
char *p;
p = pg_server_to_client(str, slen);
appendBinaryStringInfo(buf, str, slen + 1);
}
+/* --------------------------------
+ * pq_send_ascii_string - append a null-terminated text string (without conversion)
+ *
+ * This function intentionally bypasses encoding conversion, instead just
+ * silently replacing any non-7-bit-ASCII characters with question marks.
+ * It is used only when we are having trouble sending an error message to
+ * the client with normal localization and encoding conversion. The caller
+ * should already have taken measures to ensure the string is just ASCII;
+ * the extra work here is just to make certain we don't send a badly encoded
+ * string to the client (which might or might not be robust about that).
+ *
+ * NB: passed text string must be null-terminated, and so is the data
+ * sent to the frontend.
+ * --------------------------------
+ */
+void
+pq_send_ascii_string(StringInfo buf, const char *str)
+{
+ while (*str)
+ {
+ char ch = *str++;
+
+ if (IS_HIGHBIT_SET(ch))
+ ch = '?';
+ appendStringInfoCharMacro(buf, ch);
+ }
+ appendStringInfoChar(buf, '\0');
+}
+
/* --------------------------------
* pq_sendint - append a binary integer to a StringInfo buffer
* --------------------------------
#include "utils/ps_status.h"
+#undef _
+#define _(x) err_gettext(x)
+
/* Global variables */
ErrorContextCallback *error_context_stack = NULL;
return (recursion_depth > 2);
}
+/*
+ * One of those fallback steps is to stop trying to localize the error
+ * message, since there's a significant probability that that's exactly
+ * what's causing the recursion.
+ */
+static inline const char *
+err_gettext(const char *str)
+{
+#ifdef ENABLE_NLS
+ if (in_error_recursion_trouble())
+ return str;
+ else
+ return gettext(str);
+#else
+ return str;
+#endif
+}
+
+
/*
* errstart --- begin an error-reporting cycle
*
char *fmtbuf; \
StringInfoData buf; \
/* Internationalize the error format string */ \
- if (translateit) \
+ if (translateit && !in_error_recursion_trouble()) \
fmt = _(fmt); \
/* Expand %m in format string */ \
fmtbuf = expand_fmt_string(fmt, edata); \
}
+/*
+ * Append a text string to the error report being built for the client.
+ *
+ * This is ordinarily identical to pq_sendstring(), but if we are in
+ * error recursion trouble we skip encoding conversion, because of the
+ * possibility that the problem is a failure in the encoding conversion
+ * subsystem itself. Code elsewhere should ensure that the passed-in
+ * strings will be plain 7-bit ASCII, and thus not in need of conversion,
+ * in such cases. (In particular, we disable localization of error messages
+ * to help ensure that's true.)
+ */
+static void
+err_sendstring(StringInfo buf, const char *str)
+{
+ if (in_error_recursion_trouble())
+ pq_send_ascii_string(buf, str);
+ else
+ pq_sendstring(buf, str);
+}
+
/*
* Write error report to client
*/
int i;
pq_sendbyte(&msgbuf, PG_DIAG_SEVERITY);
- pq_sendstring(&msgbuf, error_severity(edata->elevel));
+ err_sendstring(&msgbuf, error_severity(edata->elevel));
/* unpack MAKE_SQLSTATE code */
ssval = edata->sqlerrcode;
tbuf[i] = '\0';
pq_sendbyte(&msgbuf, PG_DIAG_SQLSTATE);
- pq_sendstring(&msgbuf, tbuf);
+ err_sendstring(&msgbuf, tbuf);
/* M field is required per protocol, so always send something */
pq_sendbyte(&msgbuf, PG_DIAG_MESSAGE_PRIMARY);
if (edata->message)
- pq_sendstring(&msgbuf, edata->message);
+ err_sendstring(&msgbuf, edata->message);
else
- pq_sendstring(&msgbuf, _("missing error text"));
+ err_sendstring(&msgbuf, _("missing error text"));
if (edata->detail)
{
pq_sendbyte(&msgbuf, PG_DIAG_MESSAGE_DETAIL);
- pq_sendstring(&msgbuf, edata->detail);
+ err_sendstring(&msgbuf, edata->detail);
}
if (edata->hint)
{
pq_sendbyte(&msgbuf, PG_DIAG_MESSAGE_HINT);
- pq_sendstring(&msgbuf, edata->hint);
+ err_sendstring(&msgbuf, edata->hint);
}
if (edata->context)
{
pq_sendbyte(&msgbuf, PG_DIAG_CONTEXT);
- pq_sendstring(&msgbuf, edata->context);
+ err_sendstring(&msgbuf, edata->context);
}
if (edata->cursorpos > 0)
{
snprintf(tbuf, sizeof(tbuf), "%d", edata->cursorpos);
pq_sendbyte(&msgbuf, PG_DIAG_STATEMENT_POSITION);
- pq_sendstring(&msgbuf, tbuf);
+ err_sendstring(&msgbuf, tbuf);
}
if (edata->internalpos > 0)
{
snprintf(tbuf, sizeof(tbuf), "%d", edata->internalpos);
pq_sendbyte(&msgbuf, PG_DIAG_INTERNAL_POSITION);
- pq_sendstring(&msgbuf, tbuf);
+ err_sendstring(&msgbuf, tbuf);
}
if (edata->internalquery)
{
pq_sendbyte(&msgbuf, PG_DIAG_INTERNAL_QUERY);
- pq_sendstring(&msgbuf, edata->internalquery);
+ err_sendstring(&msgbuf, edata->internalquery);
}
if (edata->filename)
{
pq_sendbyte(&msgbuf, PG_DIAG_SOURCE_FILE);
- pq_sendstring(&msgbuf, edata->filename);
+ err_sendstring(&msgbuf, edata->filename);
}
if (edata->lineno > 0)
{
snprintf(tbuf, sizeof(tbuf), "%d", edata->lineno);
pq_sendbyte(&msgbuf, PG_DIAG_SOURCE_LINE);
- pq_sendstring(&msgbuf, tbuf);
+ err_sendstring(&msgbuf, tbuf);
}
if (edata->funcname)
{
pq_sendbyte(&msgbuf, PG_DIAG_SOURCE_FUNCTION);
- pq_sendstring(&msgbuf, edata->funcname);
+ err_sendstring(&msgbuf, edata->funcname);
}
pq_sendbyte(&msgbuf, '\0'); /* terminator */
appendStringInfoChar(&buf, '\n');
- pq_sendstring(&msgbuf, buf.data);
+ err_sendstring(&msgbuf, buf.data);
pfree(buf.data);
}
/*
* error_severity --- get localized string representing elevel
- *
- * Note: in an error recursion situation, we stop localizing the tags
- * for ERROR and above. This is necessary because the problem might be
- * failure to convert one of these strings to the client encoding.
*/
static const char *
error_severity(int elevel)
prefix = _("WARNING");
break;
case ERROR:
- if (in_error_recursion_trouble())
- prefix = "ERROR";
- else
- prefix = _("ERROR");
+ prefix = _("ERROR");
break;
case FATAL:
- if (in_error_recursion_trouble())
- prefix = "FATAL";
- else
- prefix = _("FATAL");
+ prefix = _("FATAL");
break;
case PANIC:
- if (in_error_recursion_trouble())
- prefix = "PANIC";
- else
- prefix = _("PANIC");
+ prefix = _("PANIC");
break;
default:
prefix = "???";
for (j = 0; j < jlimit; j++)
p += sprintf(p, "%02x", (unsigned char) mbstr[j]);
- /*
- * In an error recursion situation, don't try to translate the message.
- * This gets us out of trouble if the problem is failure to convert
- * this very message (after translation) to the client encoding.
- */
- if (in_error_recursion_trouble())
- ereport(ERROR,
- (errcode(ERRCODE_UNTRANSLATABLE_CHARACTER),
- errmsg_internal("character 0x%s of encoding \"%s\" has no equivalent in \"%s\"",
- buf,
- pg_enc2name_tbl[src_encoding].name,
- pg_enc2name_tbl[dest_encoding].name)));
- else
- ereport(ERROR,
- (errcode(ERRCODE_UNTRANSLATABLE_CHARACTER),
- errmsg("character 0x%s of encoding \"%s\" has no equivalent in \"%s\"",
- buf,
- pg_enc2name_tbl[src_encoding].name,
- pg_enc2name_tbl[dest_encoding].name)));
+ ereport(ERROR,
+ (errcode(ERRCODE_UNTRANSLATABLE_CHARACTER),
+ errmsg("character 0x%s of encoding \"%s\" has no equivalent in \"%s\"",
+ buf,
+ pg_enc2name_tbl[src_encoding].name,
+ pg_enc2name_tbl[dest_encoding].name)));
}
#endif
projects / users / bernd / postgres.git / commitdiff