diff options
Diffstat (limited to 'indra/llcommon')
| -rw-r--r-- | indra/llcommon/llsdserialize.cpp | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/indra/llcommon/llsdserialize.cpp b/indra/llcommon/llsdserialize.cpp index e7482b601d..56cc141f0d 100644 --- a/indra/llcommon/llsdserialize.cpp +++ b/indra/llcommon/llsdserialize.cpp @@ -125,14 +125,20 @@ bool LLSDSerialize::deserialize(LLSD& sd, std::istream& str, llssize max_bytes) char hdr_buf[MAX_HDR_LEN + 1] = ""; /* Flawfinder: ignore */ bool fail_if_not_legacy = false; - /* - * Get the first line before anything. Don't read more than max_bytes: - * this get() overload reads no more than (count-1) bytes into the - * specified buffer. In the usual case when max_bytes exceeds - * sizeof(hdr_buf), get() will read no more than sizeof(hdr_buf)-2. - */ - str.get(hdr_buf, llmin(max_bytes+1, sizeof(hdr_buf)-1), '\n'); + /* + * Get the first line before anything. Don't read more than max_bytes: + * this get() overload reads no more than (count-1) bytes into the + * specified buffer. In the usual case when max_bytes exceeds + * sizeof(hdr_buf), get() will read no more than sizeof(hdr_buf)-2. + */ + llssize max_hdr_read = MAX_HDR_LEN; + if (max_bytes != LLSDSerialize::SIZE_UNLIMITED) + { + max_hdr_read = llmin(max_bytes + 1, max_hdr_read); + } + str.get(hdr_buf, max_hdr_read, '\n'); auto inbuf = str.gcount(); + // https://en.cppreference.com/w/cpp/io/basic_istream/get // When the get() above sees the specified delimiter '\n', it stops there // without pulling it from the stream. If it turns out that the stream |