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| author | Nick Mathewson <nickm@torproject.org> | 2017-09-27 11:15:03 -0400 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2017-09-27 11:16:20 -0400 |
| commit | 14124f82dfbdf68e202f6e5f8220e6567e7a9d1e (patch) | |
| tree | 8d4960d28ca8db5b4c61918e50d74c9bd140bb13 | |
| parent | 5427365907ef42a25ba1f3de072dcd6244e7a75b (diff) | |
| download | tor-14124f82dfbdf68e202f6e5f8220e6567e7a9d1e.tar.gz tor-14124f82dfbdf68e202f6e5f8220e6567e7a9d1e.zip | |
Mark some tests in parse_socks.c as unreachable (BUG, LCOV)
These tests aren't reachable, given their actual arguments. I'm
going to mark them as BUG(), and as unreachable with LCOV.
| -rw-r--r-- | src/or/proto_socks.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/or/proto_socks.c b/src/or/proto_socks.c index f92d614918..3fb3a131d9 100644 --- a/src/or/proto_socks.c +++ b/src/or/proto_socks.c @@ -340,13 +340,16 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req, tor_addr_to_str(tmpbuf, &destaddr, sizeof(tmpbuf), 1); - if (strlen(tmpbuf)+1 > MAX_SOCKS_ADDR_LEN) { + if (BUG(strlen(tmpbuf)+1 > MAX_SOCKS_ADDR_LEN)) { + /* LCOV_EXCL_START -- This branch is unreachable, given the + * size of tmpbuf and the actual value of MAX_SOCKS_ADDR_LEN */ socks_request_set_socks5_error(req, SOCKS5_GENERAL_ERROR); log_warn(LD_APP, "socks5 IP takes %d bytes, which doesn't fit in %d. " "Rejecting.", (int)strlen(tmpbuf)+1,(int)MAX_SOCKS_ADDR_LEN); return -1; + /* LCOV_EXCL_STOP */ } strlcpy(req->address,tmpbuf,sizeof(req->address)); req->port = ntohs(get_uint16(data+4+addrlen)); @@ -375,12 +378,15 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req, *want_length_out = 7+len; return 0; /* not yet */ } - if (len+1 > MAX_SOCKS_ADDR_LEN) { + if (BUG(len+1 > MAX_SOCKS_ADDR_LEN)) { + /* LCOV_EXCL_START -- unreachable, since len is at most 255, + * and MAX_SOCKS_ADDR_LEN is 256. */ socks_request_set_socks5_error(req, SOCKS5_GENERAL_ERROR); log_warn(LD_APP, "socks5 hostname is %d bytes, which doesn't fit in " "%d. Rejecting.", len+1,MAX_SOCKS_ADDR_LEN); return -1; + /* LCOV_EXCL_STOP */ } memcpy(req->address,data+5,len); req->address[len] = 0; @@ -443,10 +449,13 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req, log_debug(LD_APP,"socks4: destip not in form 0.0.0.x."); in.s_addr = htonl(destip); tor_inet_ntoa(&in,tmpbuf,sizeof(tmpbuf)); - if (strlen(tmpbuf)+1 > MAX_SOCKS_ADDR_LEN) { + if (BUG(strlen(tmpbuf)+1 > MAX_SOCKS_ADDR_LEN)) { + /* LCOV_EXCL_START -- This branch is unreachable, given the + * size of tmpbuf and the actual value of MAX_SOCKS_ADDR_LEN */ log_debug(LD_APP,"socks4 addr (%d bytes) too long. Rejecting.", (int)strlen(tmpbuf)); return -1; + /* LCOV_EXCL_STOP */ } log_debug(LD_APP, "socks4: successfully read destip (%s)", |