diff options
Diffstat (limited to 'ext/socket/option.c')
| -rw-r--r-- | ext/socket/option.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/ext/socket/option.c b/ext/socket/option.c index 7b63058159..e98492fec3 100644 --- a/ext/socket/option.c +++ b/ext/socket/option.c @@ -920,7 +920,8 @@ inspect_tcpi_msec(VALUE ret, const char *prefix, u_int32_t t) static int inspect_tcp_info(int level, int optname, VALUE data, VALUE ret) { - if (RSTRING_LEN(data) == sizeof(struct tcp_info)) { + size_t actual_size = RSTRING_LEN(data); + if (sizeof(struct tcp_info) <= actual_size) { struct tcp_info s; memcpy((char*)&s, RSTRING_PTR(data), sizeof(s)); #ifdef HAVE_STRUCT_TCP_INFO_TCPI_STATE @@ -1063,6 +1064,8 @@ inspect_tcp_info(int level, int optname, VALUE data, VALUE ret) #ifdef HAVE_STRUCT_TCP_INFO_TCPI_SND_ZEROWIN rb_str_catf(ret, " snd_zerowin=%u", s.tcpi_snd_zerowin); /* FreeBSD */ #endif + if (sizeof(struct tcp_info) < actual_size) + rb_str_catf(ret, " (%u bytes too long)", (unsigned)(actual_size - sizeof(struct tcp_info))); return 1; } else { |