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/*
Copyright 2015 Red Hat, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301 USA
*/
#include <libxml/parser.h>
#include <libxml/xmlmemory.h>
#include <libxml/xpath.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <libgen.h>
#include "config.h"
#include "list.h"
#include "resgroup.h"
#include "reslist.h"
#include "xmlconf.h"
#define shift() {++argv; --argc;}
const char *agentpath = RESOURCE_ROOTDIR;
static xmlNode *
get_rm_node(xmlDocPtr doc)
{
xmlNodePtr n, o;
if (!doc)
return NULL;
n = xmlDocGetRootElement(doc);
if (!n)
return NULL;
if (strcmp((char *)n->name, "cluster")) {
fprintf(stderr, "Expected cluster tag, got %s\n", (char *)n->name);
return NULL;
}
for (o = n->xmlChildrenNode; o; o = o->next) {
if (o->type != XML_ELEMENT_NODE)
continue;
if (!strcmp((char *)o->name, "rm"))
return o;
}
return NULL;
}
static void
remove_resources_block(xmlNodePtr rm)
{
xmlNodePtr o, r = NULL;
for (o = rm->xmlChildrenNode; o; o = o->next) {
if (o->type != XML_ELEMENT_NODE)
continue;
if (!strcmp((char *)o->name, "resources")) {
r = o;
break;
}
}
if (!r)
return;
xmlUnlinkNode(r);
xmlFreeNode(r);
}
static int
replace_resource(xmlNodePtr rm, char *restype, char *primattr, char *ident, xmlNodePtr n)
{
xmlNodePtr o, r = NULL;
char *p = NULL;
for (o = rm->xmlChildrenNode; o; o = o->next) {
if (o->type != XML_ELEMENT_NODE)
continue;
if (!strcmp((char *)o->name, restype)) {
p = (char *)xmlGetProp(o, (xmlChar *) primattr);
if (!strcmp(p, ident)) {
r = o;
break;
}
}
}
if (p)
xmlFree(p);
if (!r)
return -1;
xmlUnlinkNode(r);
xmlFreeNode(r);
xmlAddChild(rm, n);
return 0;
}
static int
flatten(int argc, char **argv)
{
xmlDocPtr d = NULL;
xmlNode *n = NULL, *rm = NULL, *new_rb = NULL;
resource_rule_t *rulelist = NULL;
resource_t *reslist = NULL, *curres;
resource_node_t *tree = NULL, *rn;
FILE *f = stdout;
int ret = 0;
#ifdef RA_METADATA_EXT
int rawmetadata = 1;
#else
int rawmetadata = 0;
#endif
conf_setconfig(argv[0]);
if (conf_open() < 0)
goto out;
while (argc >= 2) {
shift();
if (!strcmp(argv[0], "-r")) {
if (!new_rb)
new_rb = xmlNewNode(NULL, (xmlChar *) "rm");
#ifdef RA_METADATA_EXT
} else if (!strcmp(argv[0], "-e")) {
rawmetadata = 0;
#endif
} else {
if (f == stdout)
f = fopen(argv[0], "w+");
}
}
d = conf_get_doc();
rm = get_rm_node(d);
/* allow fallback to rawmetadata, but not the other way around */
do {
load_resource_rules(agentpath, &rulelist, rawmetadata);
if (rulelist)
break;
#ifdef RA_METADATA_EXT
rawmetadata = !rawmetadata;
#endif
} while (rawmetadata);
if (!rulelist) {
fprintf(stderr, "No resource rules available\n");
if (rm)
goto out;
else
goto out_print;
}
load_resources(&reslist, &rulelist);
build_resource_tree(&tree, &rulelist, &reslist);
if (!tree) {
fprintf(stderr, "No resource trees defined; nothing to do\n");
goto out_print;
}
#ifdef DEBUG
fprintf(stderr, "Resources %p tree %p\n", reslist, tree);
#endif
shift();
list_do(&tree, rn) {
n = NULL;
curres = rn->rn_resource;
#ifdef DEBUG
fprintf(stderr, "Flatten %s:%s ... \n", curres->r_rule->rr_type,
curres->r_attrs[0].ra_value);
#endif
if (res_flatten(&n, new_rb, &tree, curres)) {
fprintf(stderr, "FAIL 1\n");
ret = -1;
goto out;
}
if (replace_resource(rm, curres->r_rule->rr_type,
curres->r_attrs[0].ra_name, curres->r_attrs[0].ra_value, n) != 0) {
fprintf(stderr, "FAIL 2\n");
ret = -1;
goto out;
}
}
while (!list_done(&tree, rn)) ;
remove_resources_block(rm);
if (new_rb) {
xmlAddChild(rm, new_rb);
}
out_print:
xmlDocFormatDump(f, d, 1);
out:
if (f && f != stdout)
fclose(f);
conf_close();
destroy_resource_tree(&tree);
destroy_resources(&reslist);
destroy_resource_rules(&rulelist);
return ret;
}
static void
usage(const char *arg0, int ret)
{
#ifdef RA_METADATA_EXT
fprintf(stderr, "usage: %s <input.conf> [-e] [-r] [output.conf] \n\n", arg0);
fprintf(stderr, "-e\tfirst try evaluating RA executables, only then try *.%s"
" files\n", RA_METADATA_EXT);
#else
fprintf(stderr, "usage: %s <input.conf> [-r] [output.conf] \n\n", arg0);
#endif
fprintf(stderr, "-r\t?\n");
exit(ret);
}
int
main(int argc, char **argv)
{
char *arg0 = basename(argv[0]);
int ret = 0;
if (argc < 2) {
usage(arg0, 1);
}
if (!strcasecmp(argv[1], "-h") || !strcasecmp(argv[1], "-?")) {
usage(arg0, 0);
}
xmlInitParser();
xmlIndentTreeOutput = 1;
xmlKeepBlanksDefault(0);
shift();
ret = flatten(argc, argv);
xmlCleanupParser();
return ret;
}
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