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#82, switch to gethostbyname() for win32 support

This commit is contained in:
Erik Ekman 2009-09-26 09:42:32 +00:00
parent b23f08773a
commit 4d42dbd879
4 changed files with 33 additions and 21 deletions
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2
CHANGELOG
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@ -28,7 +28,7 @@ CHANGES:
- Added support for CNAME/TXT/A/MX query types, fixes #75.
Patch by Anne Bezemer, merge help by logix.
- Merged low-latency patch from Anne Bezemer, fixes #76.
- Resolve client nameserver argument (except on win32), #82.
- Resolve client nameserver argument if given as hostname, fixes #82.
2009-06-01: 0.5.2 "WifiFree"
- Fixed client segfault on OS X, #57

5
man/iodine.8
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@ -221,9 +221,8 @@ in production environments.
.B nameserver
The nameserver to use to relay the dns traffic. This can be any relaying
nameserver or the server running iodined if reachable. This field can be
given as an IP address, or as a hostname (except on Win32 currently).
This argument is optional, and if not specified a nameserver will be read
from the
given as an IP address, or as a hostname. This argument is optional, and
if not specified a nameserver will be read from the
.I /etc/resolv.conf
file.
.TP

44
src/client.c
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@ -145,26 +145,40 @@ client_set_nameserver(const char *cp, int port)
struct in_addr addr;
if (inet_aton(cp, &addr) != 1) {
/* try resolving if a domain is given */
struct hostent *host;
const char *err;
host = gethostbyname(cp);
if (host != NULL && h_errno > 0) {
int i = 0;
while (host->h_addr_list[i] != 0) {
addr = *(struct in_addr *) host->h_addr_list[i++];
fprintf(stderr, "Resolved %s to %s\n", cp, inet_ntoa(addr));
goto setaddr;
}
}
#ifndef WINDOWS32
/* MinGW only supports getaddrinfo on WinXP and higher..
* so turn it off in windows for now
*
* try resolving if a domain is given */
struct addrinfo *addrinfo;
struct addrinfo *res;
if (getaddrinfo(cp, NULL, NULL, &addrinfo) == 0) {
struct sockaddr_in *inaddr;
for (res = addrinfo; res != NULL; res = res->ai_next) {
inaddr = (struct sockaddr_in *) res->ai_addr;
addr = inaddr->sin_addr;
err = hstrerror(h_errno);
#else
{
DWORD wserr = WSAGetLastError();
switch (wserr) {
case WSAHOST_NOT_FOUND:
err = "Host not found";
break;
case WSANO_DATA:
err = "No data record found";
break;
default:
err = "Unknown error";
break;
}
freeaddrinfo(addrinfo);
} else
#endif
errx(1, "error parsing nameserver address: '%s'", cp);
}
#endif /* !WINDOWS32 */
errx(1, "error resolving nameserver '%s': %s", cp, err);
}
setaddr:
memset(&nameserv, 0, sizeof(nameserv));
nameserv.sin_family = AF_INET;
nameserv.sin_port = htons(port);

3
src/iodine.c
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@ -89,8 +89,7 @@ help() {
fprintf(stderr, " -I max interval between requests (default 4 sec) to prevent server timeouts\n");
fprintf(stderr, " -z context, to apply specified SELinux context after initialization\n");
fprintf(stderr, " -F pidfile to write pid to a file\n");
fprintf(stderr, "nameserver is the IP number/hostname of the relaying nameserver\n "
"(hostname not supported on win32). if absent, /etc/resolv.conf is used\n");
fprintf(stderr, "nameserver is the IP number/hostname of the relaying nameserver. if absent, /etc/resolv.conf is used\n");
fprintf(stderr, "topdomain is the FQDN that is delegated to the tunnel endpoint.\n");
exit(0);