philippelh/bitchx
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On systems that support it, supply the AI_ADDRCONFIG flag to getaddrinfo().

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This means that we shouldn't try to connect using IPv6 if the local machine
doesn't have an IPv6 address itself.

This also simplifies the IPv6 code in BX_connect_by_number() a bit.


git-svn-id: svn://svn.code.sf.net/p/bitchx/code/trunk@203 13b04d17-f746-0410-82c6-800466cd88b0
This commit is contained in:
Kevin Easton
2012-06-02 11:38:37 +00:00
parent 64605b326c
commit 252d1bf004
3 changed files with 22 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
Changelog
View File

@@ -1,5 +1,8 @@
[Changes 1.2c01]
* Use AI_ADDRCONFIG flag to improve server address selection when client
is built for IPv6 but we don't have an IPv6 address. (caf)
* Enable SSL support by default, if OpenSSL is present at build time. (caf)
* Fix leak and potential crash in lame_resolv() using IPv6. (caf, snadge)
@@ -7,8 +10,8 @@
* Apply patch from snadge defining BIND_4_COMPAT on OpenBSD, to allow
/nslookup to build. (caf)
* Fix known problem with IPv6 on FreeBSD and enable IPv6 on all supporting
platforms. Thanks to brabes, snadge and packet. (caf)
* Fix problem connecting to IPv4 when IPv6 enabled on FreeBSD and enable
IPv6 on all supporting platforms. Thanks to brabes, snadge and packet. (caf)
* Improve connect() error handling. (caf)

4
include/irc.h
View File

@@ -99,6 +99,10 @@ extern char thing_star[4];
#include <netdb.h>
#endif
#ifndef AI_ADDRCONFIG
#define AI_ADDRCONFIG 0
#endif
#include "bsdglob.h"
#include "irc_std.h"

32
source/network.c
View File

@@ -506,7 +506,6 @@ int BX_connect_by_number(char *hostn, unsigned short *portnum, int service, int
#endif
#ifdef IPV6
struct addrinfo hints, *res;
struct sockaddr_foobar *sf = NULL;
#else
struct sockaddr_in localaddr;
if (LocalHostName)
@@ -524,39 +523,34 @@ int BX_connect_by_number(char *hostn, unsigned short *portnum, int service, int
#ifndef WINNT
#ifdef IPV6
memset(&hints, 0, sizeof(hints));
memset(&hints, 0, sizeof hints);
hints.ai_family = AF_UNSPEC;
hints.ai_flags = AI_ADDRCONFIG;
hints.ai_socktype = proto_type;
if (!getaddrinfo(hostn, NULL, &hints, &res) && res)
{
sf = (struct sockaddr_foobar*) res->ai_addr;
close(fd);
proto_type = (protocol == PROTOCOL_TCP) ? SOCK_STREAM : SOCK_DGRAM;
if ((fd = socket(sf->sf_family, proto_type, 0)) < 0)
if ((fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol)) < 0)
return -1;
set_socket_options (fd);
if ((server.sf_family = sf->sf_family) == AF_INET)
{
memcpy(&server.sf_addr, &sf->sf_addr, sizeof(struct in_addr));
server_len = sizeof server.sins.sin;
}
else
{
memcpy(&server.sf_addr6, &sf->sf_addr6, sizeof(struct in6_addr));
server_len = sizeof server.sins.sin6;
}
memcpy(&server, res->ai_addr, res->ai_addrlen);
server_len = res->ai_addrlen;
server.sf_port = htons(*portnum);
memset(&hints, 0, sizeof(struct addrinfo));
memset(&hints, 0, sizeof hints);
hints.ai_family = res->ai_family;
freeaddrinfo(res);
if (LocalHostName && !getaddrinfo(LocalHostName, NULL, &hints, &res) && res)
{
if (bind(fd, (struct sockaddr *) res->ai_addr, res->ai_addrlen))
return close(fd), -2;
int retval = bind(fd, (struct sockaddr *) res->ai_addr, res->ai_addrlen);
freeaddrinfo(res);
if (retval)
return close(fd), -2;
}
}
else