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Use memdup_nulterm and check for NULs in handle_cmd_transport

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This commit is contained in:
Nick Mathewson 2013-07-16 13:59:09 -04:00
parent 550af7be0a
commit 50136b6698
1 changed files with 7 additions and 3 deletions
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10
src/or/ext_orport.c
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@ -467,9 +467,13 @@ static int
connection_ext_or_handle_cmd_transport(or_connection_t *conn,
const char *payload, uint16_t len)
{
char *transport_str = tor_malloc(len + 1); /* NUL-terminate the string */
memcpy(transport_str, payload, len);
transport_str[len] = 0;
char *transport_str;
if (memchr(payload, '\0', len)) {
log_fn(LOG_PROTOCOL_WARN, LD_NET, "Unexpected NUL in ExtORPort Transport");
return -1;
}
transport_str = tor_memdup_nulterm(payload, len);
/* Transport names MUST be C-identifiers. */
if (!string_is_C_identifier(transport_str)) {