diff options
| -rw-r--r-- | regexp/jimregexp.c | 20 | ||||
| -rw-r--r-- | regexp/jimregexp.h | 3 |
2 files changed, 19 insertions, 4 deletions
diff --git a/regexp/jimregexp.c b/regexp/jimregexp.c index e3fe4fc05..7fd6d473e 100644 --- a/regexp/jimregexp.c +++ b/regexp/jimregexp.c @@ -723,7 +723,7 @@ static int regatom(regex_t *preg, int *flagp) pattern++; } - while (*pattern && *pattern != ']') { + while (*pattern != ']') { /* Is this a range? a-z */ int start; int end; @@ -735,6 +735,11 @@ static int regatom(regex_t *preg, int *flagp) }; int cc; + if (!*pattern) { + preg->err = REG_ERR_UNMATCHED_BRACKET; + return 0; + } + pattern += reg_utf8_tounicode_case(pattern, &start, nocase); if (start == '\\') { /* First check for class shorthand escapes */ @@ -758,6 +763,10 @@ static int regatom(regex_t *preg, int *flagp) preg->err = REG_ERR_NULL_CHAR; return 0; } + if (start == '\\' && *pattern == 0) { + preg->err = REG_ERR_INVALID_ESCAPE; + return 0; + } } if (pattern[0] == '-' && pattern[1] && pattern[1] != ']') { /* skip '-' */ @@ -769,6 +778,10 @@ static int regatom(regex_t *preg, int *flagp) preg->err = REG_ERR_NULL_CHAR; return 0; } + if (start == '\\' && *pattern == 0) { + preg->err = REG_ERR_INVALID_ESCAPE; + return 0; + } } reg_addrange(preg, start, end); @@ -873,7 +886,7 @@ cc_switch: ch = *preg->regparse++; switch (ch) { case '\0': - preg->err = REG_ERR_TRAILING_BACKSLASH; + preg->err = REG_ERR_INVALID_ESCAPE; return 0; case 'A': ret = regnode(preg, BOLX); @@ -1883,9 +1896,10 @@ size_t regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_s "nested count", "internal error", "count follows nothing", - "trailing backslash", + "invalid escape \\ sequence", "corrupted program", "contains null char", + "brackets [] not balanced", }; const char *err; diff --git a/regexp/jimregexp.h b/regexp/jimregexp.h index 581b7104c..ab734797b 100644 --- a/regexp/jimregexp.h +++ b/regexp/jimregexp.h @@ -91,9 +91,10 @@ enum { REG_ERR_NESTED_COUNT, REG_ERR_INTERNAL, REG_ERR_COUNT_FOLLOWS_NOTHING, - REG_ERR_TRAILING_BACKSLASH, + REG_ERR_INVALID_ESCAPE, REG_ERR_CORRUPTED, REG_ERR_NULL_CHAR, + REG_ERR_UNMATCHED_BRACKET, REG_ERR_NUM }; |