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/*
* OpenConnect (SSL + DTLS) VPN client
*
* Copyright © 2008-2010 Intel Corporation.
* Copyright © 2008 Nick Andrew <nick@nick-andrew.net>
*
* Author: David Woodhouse <dwmw2@infradead.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to:
*
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <string.h>
#include "openconnect-internal.h"
int config_lookup_host(struct openconnect_info *vpninfo, const char *host)
{
int fd, i;
struct stat st;
char *xmlfile;
EVP_MD_CTX c;
unsigned char sha1[SHA_DIGEST_LENGTH];
xmlDocPtr xml_doc;
xmlNode *xml_node, *xml_node2;
if (!vpninfo->xmlconfig)
return 0;
fd = open(vpninfo->xmlconfig, O_RDONLY);
if (fd < 0) {
perror(_("Open XML config file"));
fprintf(stderr, _("Treating host \"%s\" as a raw hostname\n"),
host);
return 0;
}
if (fstat(fd, &st)) {
perror(_("fstat XML config file"));
return -1;
}
xmlfile = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
if (xmlfile == MAP_FAILED) {
perror(_("mmap XML config file"));
close(fd);
return -1;
}
EVP_MD_CTX_init(&c);
EVP_Digest(xmlfile, st.st_size, sha1, NULL, EVP_sha1(), NULL);
EVP_MD_CTX_cleanup(&c);
for (i = 0; i < SHA_DIGEST_LENGTH; i++)
sprintf(&vpninfo->xmlsha1[i*2], "%02x", sha1[i]);
vpn_progress(vpninfo, PRG_TRACE, _("XML config file SHA1: %s\n"),
vpninfo->xmlsha1);
xml_doc = xmlReadMemory(xmlfile, st.st_size, "noname.xml", NULL, 0);
munmap(xmlfile, st.st_size);
close(fd);
if (!xml_doc) {
fprintf(stderr, _("Failed to parse XML config file %s\n"),
vpninfo->xmlconfig);
fprintf(stderr, _("Treating host \"%s\" as a raw hostname\n"),
host);
return 0;
}
xml_node = xmlDocGetRootElement(xml_doc);
for (xml_node = xml_node->children; xml_node; xml_node = xml_node->next) {
if (xml_node->type == XML_ELEMENT_NODE &&
!strcmp((char *)xml_node->name, "ServerList")) {
for (xml_node = xml_node->children; xml_node && !vpninfo->hostname;
xml_node = xml_node->next) {
if (xml_node->type == XML_ELEMENT_NODE &&
!strcmp((char *)xml_node->name, "HostEntry")) {
int match = 0;
for (xml_node2 = xml_node->children;
match >= 0 && xml_node2; xml_node2 = xml_node2->next) {
if (xml_node2->type != XML_ELEMENT_NODE)
continue;
if (!match && !strcmp((char *)xml_node2->name, "HostName")) {
char *content = (char *)xmlNodeGetContent(xml_node2);
if (content && !strcmp(content, host))
match = 1;
else
match = -1;
free(content);
} else if (match &&
!strcmp((char *)xml_node2->name, "HostAddress")) {
char *content = (char *)xmlNodeGetContent(xml_node2);
if (content) {
vpninfo->hostname = content;
printf(_("Host \"%s\" has address \"%s\"\n"),
host, content);
}
} else if (match &&
!strcmp((char *)xml_node2->name, "UserGroup")) {
char *content = (char *)xmlNodeGetContent(xml_node2);
if (content) {
free(vpninfo->urlpath);
vpninfo->urlpath = content;
printf(_("Host \"%s\" has UserGroup \"%s\"\n"),
host, content);
}
}
}
}
}
break;
}
}
xmlFreeDoc(xml_doc);
if (!vpninfo->hostname) {
fprintf(stderr, _("Host \"%s\" not listed in config; treating as raw hostname\n"),
host);
}
return 0;
}
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