c-ares

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Tag: Branch: Tree: a42a0024a9

Commit Graph

Author	SHA1	Message	Date
Brad House	0cc570eabe	Implement ares_reinit() to reload system configuration into existing channel (#614 ) This PR implements ares_reinit() to safely reload a channel's configuration even if there are existing queries. This function can be called when system configuration is detected to be changed, however since c-ares isn't thread aware, care must be taken to ensure no other c-ares calls are in progress at the time this function is called. Also, this function may update the open file descriptor list so care must also be taken to wake any event loops and reprocess the list of file descriptors. Fixes Bug #301 Fix By: Brad House (@bradh352)	1 year ago
Fionn Fitzmaurice	6d6cd5daf6	Avoid buffer overflow in RC4 loop comparison (#336 ) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)	4 years ago

Author

SHA1

Message

Date

Brad House

0cc570eabe

Implement ares_reinit() to reload system configuration into existing channel (#614 )

This PR implements ares_reinit() to safely reload a channel's configuration even if there are existing queries.  This function can be called when system configuration is detected to be changed, however since c-ares isn't thread aware, care must be taken to ensure no other c-ares calls are in progress at the time this function is called.  Also, this function may update the open file descriptor list so care must also be taken to wake any event loops and reprocess the list of file descriptors.

Fixes Bug #301

Fix By: Brad House (@bradh352)

1 year ago

Fionn Fitzmaurice

6d6cd5daf6

Avoid buffer overflow in RC4 loop comparison (#336 )

The rc4 function iterates over a buffer of size buffer_len who's maximum
value is INT_MAX with a counter of type short that is not guaranteed to
have maximum size INT_MAX.

In circumstances where short is narrower than int and where buffer_len
is larger than the maximum value of a short, it may be possible to loop
infinitely as counter will overflow and never be greater than or equal
to buffer_len.

The solution is to make the comparison be between types of equal width.
This commit defines counter as an int.

Fix By: Fionn Fitzmaurice (@fionn)

4 years ago

2 Commits (a42a0024a9f9cce83c165b6b44cd5cabf34534da)