ComputerSurge/bind9
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line numbers could be corrupted by very large tokens.

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This commit is contained in:
Brian Wellington
2000-12-09 00:41:33 +00:00
parent 10f89d2f83
commit bb812feb3c
1 changed files with 7 additions and 2 deletions
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9
lib/isc/lex.c
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@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: lex.c,v 1.54 2000/12/07 20:15:54 marka Exp $ */
/* $Id: lex.c,v 1.55 2000/12/09 00:41:33 bwelling Exp $ */
#include <config.h>
@@ -41,6 +41,7 @@ typedef struct inputsource {
void * input;
char * name;
unsigned long line;
unsigned long saved_line;
LINK(struct inputsource) link;
} inputsource;
@@ -345,13 +346,14 @@ pushandgrow(isc_lex_t *lex, inputsource *source, int c) {
isc_buffer_usedregion(source->pushback, &used);
result = isc_buffer_copyregion(tbuf, &used);
INSIST(result == ISC_R_SUCCESS);
tbuf->current = source->pushback->current;
isc_buffer_free(&source->pushback);
source->pushback = tbuf;
}
isc_buffer_putuint8(source->pushback, (isc_uint8_t)c);
return (ISC_R_SUCCESS);
}
isc_result_t
isc_lex_gettoken(isc_lex_t *lex, unsigned int options, isc_token_t *tokenp) {
inputsource *source;
@@ -379,6 +381,7 @@ isc_lex_gettoken(isc_lex_t *lex, unsigned int options, isc_token_t *tokenp) {
REQUIRE(tokenp != NULL);
lex->saved_paren_count = lex->paren_count;
source->saved_line = source->line;
if (source == NULL) {
if ((options & ISC_LEXOPT_NOMORE) != 0) {
@@ -448,6 +451,7 @@ isc_lex_gettoken(isc_lex_t *lex, unsigned int options, isc_token_t *tokenp) {
return (source->result);
}
}
if (!source->at_eof)
c = isc_buffer_getuint8(source->pushback);
else
@@ -787,6 +791,7 @@ isc_lex_ungettoken(isc_lex_t *lex, isc_token_t *tokenp) {
isc_buffer_first(source->pushback);
lex->paren_count = lex->saved_paren_count;
source->line = source->saved_line;
source->at_eof = ISC_FALSE;
}