Chiebot-Mirror
/
c-ares
mirror of https://github.com/c-ares/c-ares.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity
A C library for asynchronous DNS requests (grpc依赖)
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
811 Commits
14 Branches
96 Tags
22 MiB
Tag: Branch: Tree: 8d360330a5
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '8d360330a5'
${ noResults }
c-ares/docs/ares_dup.3

26 lines
794 B
Raw Normal View History Unescape

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
.\"
.\" Copyright (C) 2004-2009 by Daniel Stenberg
provide SPDX identifiers and a REUSE CI job to verify All files have their licence and copyright information clearly identifiable. If not in the file header, they are set separately in .reuse/dep5. All used license texts are provided in LICENSES/
1 year ago
.\" SPDX-License-Identifier: MIT
.\"
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
.TH ARES_DUP 3 "26 May 2009"
.SH NAME
ares_dup \- Duplicate a resolver channel
.SH SYNOPSIS
.nf
docs: reformat/cleanup man pages SYNOPSIS sections (#494) To make them render "nicer" in both terminals and on the website. - Removes the bold - Removes .PP lines - Indents them more like proper code style Fix By: Daniel Stenberg (@bagder)
2 years ago
#include <ares.h>
const is fine on ares__channel_[un]lock (#758) at https://github.com/c-ares/c-ares/pull/601#issuecomment-1801935063 you chose not to scatter `const` on the public interface because of the plan - now realised - to add threading to c-ares, and in the expectation that even read operations would need to lock the mutex. But the threading implementation has a _pointer_ to a mutex inside the ares channel and as I understand it, that means that it is just fine to mark `ares__channel_lock` (and `ares__channel_unlock`) as taking a `const` channel. It is the pointed-to mutex that is not constant, but C does not propagate `const`-ness through pointers. This PR sprinkles const where appropriate on public interfaces. Fix By: David Hotham (@dimbleby)
6 months ago
int ares_dup(ares_channel_t **\fIdest\fP, const ares_channel_t *\fIsource\fP)
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
.fi
.SH DESCRIPTION
The \fBares_dup(3)\fP function duplicates an existing communications channel
for name service lookups. If it returns successfully, \fBares_dup(3)\fP will
set the variable pointed to by \fIdest\fP to a handle used to identify the
name service channel. The caller should invoke \fIares_destroy(3)\fP on the
handle when the channel is no longer needed.
.SH SEE ALSO
docs: provide better man page references When referring to another c-ares function use \fI function(3) \fP to let the webpage rendering find and cross-link them appropriately. SEE ALSO references should be ".BR name (3),", with a space before the open parenthesis. This helps the manpage to HTML renderer. Closes #565
1 year ago
.BR ares_destroy (3),
.BR ares_init (3),
.BR ares_library_init (3)
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
.SH AVAILABILITY
\fIares_dup(3)\fP was added in c-ares 1.6.0