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/SET resolve_reverse_lookup to do reverse lookups for server when

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/connecting. Patch by c0ffee.


git-svn-id: http://svn.irssi.org/repos/irssi/trunk@3027 dbcabf3a-b0e7-0310-adc4-f8d773084564
This commit is contained in:
Timo Sirainen 2002-11-28 15:39:39 +00:00 • committed by cras
commit 5b60b859d4
3 changed files with 66 additions and 8 deletions
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44
src/core/net-nonblock.c
View file

@ -73,13 +73,15 @@ static int g_io_channel_read_block(GIOChannel *channel, void *data, int len)
/* nonblocking gethostbyname(), ip (IPADDR) + error (int, 0 = not error) is
written to pipe when found PID of the resolver child is returned */
int net_gethostbyname_nonblock(const char *addr, GIOChannel *pipe)
int net_gethostbyname_nonblock(const char *addr, GIOChannel *pipe,
int reverse_lookup)
{
RESOLVED_IP_REC rec;
const char *errorstr;
#ifndef WIN32
int pid;
#endif
int len;
g_return_val_if_fail(addr != NULL, FALSE);
@ -103,6 +105,13 @@ int net_gethostbyname_nonblock(const char *addr, GIOChannel *pipe)
rec.error = net_gethostbyname(addr, &rec.ip4, &rec.ip6);
if (rec.error == 0) {
errorstr = NULL;
if (reverse_lookup) {
/* reverse lookup the IP, ignore any error */
if (rec.ip4.family != 0)
net_gethostbyaddr(&rec.ip4, &rec.host4);
if (rec.ip6.family != 0)
net_gethostbyaddr(&rec.ip6, &rec.host6);
}
} else {
errorstr = net_gethosterror(rec.error);
rec.errlen = errorstr == NULL ? 0 : strlen(errorstr)+1;
@ -111,6 +120,22 @@ int net_gethostbyname_nonblock(const char *addr, GIOChannel *pipe)
g_io_channel_write_block(pipe, &rec, sizeof(rec));
if (rec.errlen != 0)
g_io_channel_write_block(pipe, (void *) errorstr, rec.errlen);
else {
if (rec.host4) {
len = strlen(rec.host4) + 1;
g_io_channel_write_block(pipe, (void *) &len,
sizeof(int));
g_io_channel_write_block(pipe, (void *) rec.host4,
len);
}
if (rec.host6) {
len = strlen(rec.host6) + 1;
g_io_channel_write_block(pipe, (void *) &len,
sizeof(int));
g_io_channel_write_block(pipe, (void *) rec.host6,
len);
}
}
#ifndef WIN32
if (pid == 0)
@ -124,8 +149,12 @@ int net_gethostbyname_nonblock(const char *addr, GIOChannel *pipe)
/* get the resolved IP address */
int net_gethostbyname_return(GIOChannel *pipe, RESOLVED_IP_REC *rec)
{
int len;
rec->error = -1;
rec->errorstr = NULL;
rec->host4 = NULL;
rec->host6 = NULL;
#ifndef WIN32
fcntl(g_io_channel_unix_get_fd(pipe), F_SETFL, O_NONBLOCK);
@ -143,6 +172,17 @@ int net_gethostbyname_return(GIOChannel *pipe, RESOLVED_IP_REC *rec)
reason, just ignore it. */
rec->errorstr = g_malloc0(rec->errlen+1);
g_io_channel_read_block(pipe, rec->errorstr, rec->errlen);
} else {
if (rec->host4) {
g_io_channel_read_block(pipe, &len, sizeof(int));
rec->host4 = g_malloc0(len);
g_io_channel_read_block(pipe, rec->host4, len);
}
if (rec->host6) {
g_io_channel_read_block(pipe, &len, sizeof(int));
rec->host6 = g_malloc0(len);
g_io_channel_read_block(pipe, rec->host6, len);
}
}
return 0;
@ -244,7 +284,7 @@ int net_connect_nonblock(const char *server, int port, const IPADDR *my_ip,
rec->pipes[1] = g_io_channel_unix_new(fd[1]);
/* start nonblocking host name lookup */
net_gethostbyname_nonblock(server, rec->pipes[1]);
net_gethostbyname_nonblock(server, rec->pipes[1], 0);
rec->tag = g_input_add(rec->pipes[0], G_INPUT_READ,
(GInputFunction) simple_readpipe, rec);