diff options
| -rw-r--r-- | src/decoder/_flac_common.c | 40 |
1 files changed, 21 insertions, 19 deletions
diff --git a/src/decoder/_flac_common.c b/src/decoder/_flac_common.c index 9e2d9f437..ae7d039ce 100644 --- a/src/decoder/_flac_common.c +++ b/src/decoder/_flac_common.c @@ -110,25 +110,27 @@ flac_comment_value(const FLAC__StreamMetadata_VorbisComment_Entry *entry, size_t char_tnum_length = 0; const char *comment = (const char*)entry->entry; - if (entry->length > name_length && - g_ascii_strncasecmp(comment, name, name_length) == 0) { - if (char_tnum != NULL) { - char_tnum_length = strlen(char_tnum); - if (entry->length > name_length + char_tnum_length + 2 && - comment[name_length] == '[' && - g_ascii_strncasecmp(comment + name_length + 1, - char_tnum, char_tnum_length) == 0 && - comment[name_length + char_tnum_length + 1] == ']') - name_length = name_length + char_tnum_length + 2; - else if (entry->length > name_length + char_tnum_length && - g_ascii_strncasecmp(comment + name_length, - char_tnum, char_tnum_length) == 0) - name_length = name_length + char_tnum_length; - } - if (comment[name_length] == '=') { - *length_r = entry->length - name_length - 1; - return comment + name_length + 1; - } + if (entry->length <= name_length || + g_ascii_strncasecmp(comment, name, name_length) != 0) + return NULL; + + if (char_tnum != NULL) { + char_tnum_length = strlen(char_tnum); + if (entry->length > name_length + char_tnum_length + 2 && + comment[name_length] == '[' && + g_ascii_strncasecmp(comment + name_length + 1, + char_tnum, char_tnum_length) == 0 && + comment[name_length + char_tnum_length + 1] == ']') + name_length = name_length + char_tnum_length + 2; + else if (entry->length > name_length + char_tnum_length && + g_ascii_strncasecmp(comment + name_length, + char_tnum, char_tnum_length) == 0) + name_length = name_length + char_tnum_length; + } + + if (comment[name_length] == '=') { + *length_r = entry->length - name_length - 1; + return comment + name_length + 1; } return NULL; |