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- I introduced a maximum limit for received HTTP headers. It is controlled by

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the define CURL_MAX_HTTP_HEADER which is even exposed in the public header
  file to allow for users to fairly easy rebuild libcurl with a modified
  limit. The rationale for a fixed limit is that libcurl is realloc()ing a
  buffer to be able to put a full header into it, so that it can call the
  header callback with the entire header, but that also risk getting it into
  trouble if a server by mistake or willingly sends a header that is more or
  less without an end. The limit is set to 100K.
This commit is contained in:
Daniel Stenberg 2009-09-27 21:34:13 +00:00
parent 867a0de670
commit 8646cecb78
4 changed files with 33 additions and 3 deletions
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9
include/curl/curl.h
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@ -178,6 +178,15 @@ typedef int (*curl_progress_callback)(void *clientp,
time for those who feel adventurous. */
#define CURL_MAX_WRITE_SIZE 16384
#endif
#ifndef CURL_MAX_HTTP_HEADER
/* The only reason to have a max limit for this is to avoid the risk of a bad
server feeding libcurl with a never-ending header that will cause reallocs
infinitely */
#define CURL_MAX_HTTP_HEADER (100*1024)
#endif
/* This is a magic return code for the write callback that, when returned,
will signal libcurl to pause receiving on the current transfer. */
#define CURL_WRITEFUNC_PAUSE 0x10000001