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Correctly check that compress gone well before using the result buffer.

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We need to check the return code of compress.
Compress may fail for different reason, one being that the compr_buffer
is not large enough.
This commit is contained in:
Matthieu Gautier 2017-03-15 09:50:43 +01:00
parent 3592cd84c6
commit e27ce444c6
1 changed files with 2 additions and 2 deletions
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4
src/server/kiwix-serve.cpp
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@ -166,9 +166,9 @@ bool compress_content(string &content,
pthread_mutex_lock(&compressorLock);
compr_buffer.reserve(COMPRESSOR_BUFFER_SIZE);
uLongf comprLen = COMPRESSOR_BUFFER_SIZE;
compress(&compr_buffer[0], &comprLen, (const Bytef*)(content.data()), contentLength);
int err = compress(&compr_buffer[0], &comprLen, (const Bytef*)(content.data()), contentLength);
if (comprLen > 2 && comprLen < (contentLength+2)) {
if (err == Z_OK && comprLen > 2 && comprLen < (contentLength+2)) {
/* /!\ Internet Explorer has a bug with deflate compression.
It can not handle the first two bytes (compression headers)