diff --git a/lib/common/xml.c b/lib/common/xml.c
index f3615830ff..ecc7fb1660 100644
--- a/lib/common/xml.c
+++ b/lib/common/xml.c
@@ -1,2779 +1,2802 @@
/*
* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* 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 2.1 of the License, or (at your option) any later version.
*
* This software 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <time.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <libxml/xmlreader.h>
#include <clplumbing/md5.h>
#if HAVE_BZLIB_H
# include <bzlib.h>
#endif
#define XML_BUFFER_SIZE 4096
#define XML_PARSER_DEBUG 0
xmlDoc *getDocPtr(xmlNode *node);
struct schema_s
{
int type;
const char *name;
const char *location;
const char *transform;
int after_transform;
};
struct schema_s known_schemas[] = {
/* 0 */ { 0, NULL, NULL, NULL, 1 },
/* 1 */ { 1, "pacemaker-0.6", CRM_DTD_DIRECTORY"/crm.dtd", CRM_DTD_DIRECTORY"/upgrade06.xsl", 4 },
/* 2 */ { 1, "transitional-0.6", CRM_DTD_DIRECTORY"/crm-transitional.dtd", CRM_DTD_DIRECTORY"/upgrade06.xsl", 4 },
/* 3 */ { 2, "pacemaker-0.7", CRM_DTD_DIRECTORY"/pacemaker-1.0.rng", NULL, 0 },
/* 4 */ { 2, "pacemaker-1.0", CRM_DTD_DIRECTORY"/pacemaker-1.0.rng", NULL, 6 },
/* 5 */ { 2, "pacemaker-1.1", CRM_DTD_DIRECTORY"/pacemaker-1.1.rng", NULL, 6 },
/* 6 */ { 2, "pacemaker-1.2", CRM_DTD_DIRECTORY"/pacemaker-1.2.rng", NULL, 0 },
/* 7 */ { 0, "none", NULL, NULL, 0 },
};
static int all_schemas = DIMOF(known_schemas);
static int max_schemas = DIMOF(known_schemas) - 2; /* skip back past 'none' */
static const char *filter[] = {
XML_ATTR_ORIGIN,
XML_DIFF_MARKER,
XML_CIB_ATTR_WRITTEN,
};
static void add_ha_nocopy(HA_Message *parent, HA_Message *child, const char *field)
{
int next = parent->nfields;
if (parent->nfields >= parent->nalloc && ha_msg_expand(parent) != HA_OK ) {
crm_err("Parent expansion failed");
return;
}
parent->names[next] = crm_strdup(field);
parent->nlens[next] = strlen(field);
parent->values[next] = child;
parent->vlens[next] = sizeof(HA_Message);
parent->types[next] = FT_UNCOMPRESS;
parent->nfields++;
}
int print_spaces(char *buffer, int spaces, int max);
int log_data_element(const char *function, const char *prefix, int log_level,
int depth, xmlNode *data, gboolean formatted);
int get_tag_name(const char *input, size_t offset, size_t max);
int get_attr_name(const char *input, size_t offset, size_t max);
int get_attr_value(const char *input, size_t offset, size_t max);
gboolean can_prune_leaf(xmlNode *xml_node);
void diff_filter_context(int context, int upper_bound, int lower_bound,
xmlNode *xml_node, xmlNode *parent);
int in_upper_context(int depth, int context, xmlNode *xml_node);
int write_file(const char *string, const char *filename);
xmlNode *
find_xml_node(xmlNode *root, const char * search_path, gboolean must_find)
{
const char *name = "NULL";
if(must_find || root != NULL) {
crm_validate_data(root);
}
if(root != NULL) {
name = crm_element_name(root);
}
if(search_path == NULL) {
crm_warn("Will never find <NULL>");
return NULL;
}
xml_child_iter_filter(
root, a_child, search_path,
/* crm_debug_5("returning node (%s).", crm_element_name(a_child)); */
crm_validate_data(a_child);
return a_child;
);
if(must_find) {
crm_warn("Could not find %s in %s.", search_path, name);
} else if(root != NULL) {
crm_debug_3("Could not find %s in %s.", search_path, name);
} else {
crm_debug_3("Could not find %s in <NULL>.", search_path);
}
return NULL;
}
xmlNode*
find_entity(xmlNode *parent, const char *node_name, const char *id)
{
crm_validate_data(parent);
xml_child_iter_filter(
parent, a_child, node_name,
if(id == NULL || crm_str_eq(id, ID(a_child), TRUE)) {
crm_debug_4("returning node (%s).",
crm_element_name(a_child));
return a_child;
}
);
crm_debug_3("node <%s id=%s> not found in %s.",
node_name, id, crm_element_name(parent));
return NULL;
}
void
copy_in_properties(xmlNode* target, xmlNode *src)
{
crm_validate_data(src);
crm_validate_data(target);
if(src == NULL) {
crm_warn("No node to copy properties from");
} else if (target == NULL) {
crm_err("No node to copy properties into");
} else {
xml_prop_iter(
src, local_prop_name, local_prop_value,
expand_plus_plus(target, local_prop_name, local_prop_value)
);
crm_validate_data(target);
}
return;
}
void fix_plus_plus_recursive(xmlNode* target)
{
xml_prop_iter(target, name, value, expand_plus_plus(target, name, value));
xml_child_iter(target, child, fix_plus_plus_recursive(child));
}
void
expand_plus_plus(xmlNode* target, const char *name, const char *value)
{
int offset = 1;
int name_len = 0;
int int_value = 0;
int value_len = 0;
const char *old_value = NULL;
if(value == NULL || name == NULL) {
return;
}
old_value = crm_element_value(target, name);
if(old_value == NULL) {
/* if no previous value, set unexpanded */
goto set_unexpanded;
} else if(strstr(value, name) != value) {
goto set_unexpanded;
}
name_len = strlen(name);
value_len = strlen(value);
if(value_len < (name_len + 2)
|| value[name_len] != '+'
|| (value[name_len+1] != '+' && value[name_len+1] != '=')) {
goto set_unexpanded;
}
/* if we are expanding ourselves,
* then no previous value was set and leave int_value as 0
*/
if(old_value != value) {
int_value = char2score(old_value);
}
if(value[name_len+1] != '+') {
const char *offset_s = value+(name_len+2);
offset = char2score(offset_s);
}
int_value += offset;
if(int_value > INFINITY) {
int_value = INFINITY;
}
crm_xml_add_int(target, name, int_value);
return;
set_unexpanded:
if(old_value == value) {
/* the old value is already set, nothing to do */
return;
}
crm_xml_add(target, name, value);
return;
}
xmlDoc *getDocPtr(xmlNode *node)
{
xmlDoc *doc = NULL;
CRM_CHECK(node != NULL, return NULL);
doc = node->doc;
if(doc == NULL) {
doc = xmlNewDoc((const xmlChar*)"1.0");
xmlDocSetRootElement(doc, node);
xmlSetTreeDoc(node, doc);
}
return doc;
}
xmlNode*
add_node_copy(xmlNode *parent, xmlNode *src_node)
{
xmlNode *child = NULL;
xmlDoc *doc = getDocPtr(parent);
CRM_CHECK(src_node != NULL, return NULL);
child = xmlDocCopyNode(src_node, doc, 1);
xmlAddChild(parent, child);
return child;
}
int
add_node_nocopy(xmlNode *parent, const char *name, xmlNode *child)
{
add_node_copy(parent, child);
free_xml(child);
return HA_OK;
}
const char *
crm_xml_add(xmlNode* node, const char *name, const char *value)
{
xmlAttr *attr = NULL;
CRM_CHECK_AND_STORE(node != NULL, return NULL);
CRM_CHECK_AND_STORE(name != NULL, return NULL);
if(value == NULL) {
return NULL;
}
#if XML_PARANOIA_CHECKS
{
const char *old_value = NULL;
old_value = crm_element_value(node, name);
/* Could be re-setting the same value */
CRM_CHECK_AND_STORE(old_value != value,
crm_err("Cannot reset %s with crm_xml_add(%s)",
name, value);
return value);
}
#endif
attr = xmlSetProp(node, (const xmlChar*)name, (const xmlChar*)value);
CRM_CHECK(attr && attr->children && attr->children->content, return NULL);
return (char *)attr->children->content;
}
const char *
crm_xml_replace(xmlNode* node, const char *name, const char *value)
{
xmlAttr *attr = NULL;
const char *old_value = NULL;
CRM_CHECK(node != NULL, return NULL);
CRM_CHECK(name != NULL && name[0] != 0, return NULL);
old_value = crm_element_value(node, name);
/* Could be re-setting the same value */
CRM_CHECK_AND_STORE(old_value != value, return value);
if (old_value != NULL && value == NULL) {
xml_remove_prop(node, name);
return NULL;
} else if(value == NULL) {
return NULL;
}
attr = xmlSetProp(node, (const xmlChar*)name, (const xmlChar*)value);
CRM_CHECK(attr && attr->children && attr->children->content, return NULL);
return (char *)attr->children->content;
}
const char *
crm_xml_add_int(xmlNode* node, const char *name, int value)
{
char *number = crm_itoa(value);
const char *added = crm_xml_add(node, name, number);
crm_free(number);
return added;
}
xmlNode*
create_xml_node(xmlNode *parent, const char *name)
{
xmlDoc *doc = NULL;
xmlNode *node = NULL;
if (name == NULL || name[0] == 0) {
return NULL;
}
if(parent == NULL) {
doc = xmlNewDoc((const xmlChar*)"1.0");
node = xmlNewDocRawNode(doc, NULL, (const xmlChar*)name, NULL);
xmlDocSetRootElement(doc, node);
} else {
doc = getDocPtr(parent);
node = xmlNewDocRawNode(doc, NULL, (const xmlChar*)name, NULL);
xmlAddChild(parent, node);
}
return node;
}
void
free_xml_from_parent(xmlNode *parent, xmlNode *a_node)
{
CRM_CHECK(a_node != NULL, return);
xmlUnlinkNode(a_node);
xmlFreeNode(a_node);
}
xmlNode*
copy_xml(xmlNode *src)
{
xmlDoc *doc = xmlNewDoc((const xmlChar*)"1.0");
xmlNode *copy = xmlDocCopyNode(src, doc, 1);
xmlDocSetRootElement(doc, copy);
xmlSetTreeDoc(copy, doc);
return copy;
}
static void crm_xml_err(void * ctx, const char * msg, ...) G_GNUC_PRINTF(2,3);
extern size_t strlcat(char * dest, const char *source, size_t len);
int
write_file(const char *string, const char *filename)
{
int rc = 0;
FILE *file_output_strm = NULL;
CRM_CHECK(filename != NULL, return -1);
if (string == NULL) {
crm_err("Cannot write NULL to %s", filename);
return -1;
}
file_output_strm = fopen(filename, "w");
if(file_output_strm == NULL) {
crm_perror(LOG_ERR,"Cannot open %s for writing", filename);
return -1;
}
rc = fprintf(file_output_strm, "%s", string);
if(rc < 0) {
crm_perror(LOG_ERR,"Cannot write output to %s", filename);
}
if(fflush(file_output_strm) != 0) {
crm_perror(LOG_ERR,"fflush for %s failed:", filename);
rc = -1;
}
if(fsync(fileno(file_output_strm)) < 0) {
crm_perror(LOG_ERR,"fsync for %s failed:", filename);
rc = -1;
}
fclose(file_output_strm);
return rc;
}
static void crm_xml_err(void * ctx, const char * msg, ...)
{
int len = 0;
va_list args;
char *buf = NULL;
static int buffer_len = 0;
static char *buffer = NULL;
va_start(args, msg);
len = vasprintf(&buf, msg, args);
if(strchr(buf, '\n')) {
buf[len - 1] = 0;
if(buffer) {
crm_err("XML Error: %s%s", buffer, buf);
free(buffer);
} else {
crm_err("XML Error: %s", buf);
}
buffer = NULL;
buffer_len = 0;
} else if(buffer == NULL) {
buffer_len = len;
buffer = buf;
buf = NULL;
} else {
buffer_len += len;
buffer = realloc(buffer, buffer_len);
strlcat(buffer, buf, buffer_len);
}
va_end(args);
free(buf);
}
xmlNode*
string2xml(const char *input)
{
xmlNode *xml = NULL;
xmlDocPtr output = NULL;
xmlParserCtxtPtr ctxt = NULL;
xmlErrorPtr last_error = NULL;
if(input == NULL) {
crm_err("Can't parse NULL input");
return NULL;
}
/* create a parser context */
ctxt = xmlNewParserCtxt();
CRM_CHECK(ctxt != NULL, return NULL);
/* xmlCtxtUseOptions(ctxt, XML_PARSE_NOBLANKS|XML_PARSE_RECOVER); */
xmlCtxtResetLastError(ctxt);
xmlSetGenericErrorFunc(ctxt, crm_xml_err);
/* initGenericErrorDefaultFunc(crm_xml_err); */
output = xmlCtxtReadDoc(ctxt, (const xmlChar*)input, NULL, NULL, XML_PARSE_NOBLANKS|XML_PARSE_RECOVER);
if(output) {
xml = xmlDocGetRootElement(output);
}
last_error = xmlCtxtGetLastError(ctxt);
if(last_error && last_error->code != XML_ERR_OK) {
/* crm_abort(__FILE__,__PRETTY_FUNCTION__,__LINE__, "last_error->code != XML_ERR_OK", TRUE, TRUE); */
/*
* http://xmlsoft.org/html/libxml-xmlerror.html#xmlErrorLevel
* http://xmlsoft.org/html/libxml-xmlerror.html#xmlParserErrors
*/
crm_warn("Parsing failed (domain=%d, level=%d, code=%d): %s",
last_error->domain, last_error->level,
last_error->code, last_error->message);
if(last_error->code != XML_ERR_DOCUMENT_END) {
crm_err("Couldn't%s parse %d chars: %s", xml?" fully":"", (int)strlen(input), input);
if(xml != NULL) {
crm_log_xml_err(xml, "Partial");
}
} else {
int len = strlen(input);
crm_warn("String start: %.50s", input);
crm_warn("String start+%d: %s", len-50, input+len-50);
crm_abort(__FILE__,__PRETTY_FUNCTION__,__LINE__, "String parsing error", TRUE, TRUE);
}
}
xmlFreeParserCtxt(ctxt);
return xml;
}
xmlNode *
stdin2xml(void)
{
size_t data_length = 0;
size_t read_chars = 0;
char *xml_buffer = NULL;
xmlNode *xml_obj = NULL;
do {
crm_realloc(xml_buffer, XML_BUFFER_SIZE + data_length + 1);
read_chars = fread(xml_buffer + data_length, 1, XML_BUFFER_SIZE, stdin);
data_length += read_chars;
} while (read_chars > 0);
if(data_length == 0) {
crm_warn("No XML supplied on stdin");
return NULL;
}
xml_buffer[data_length] = '\0';
xml_obj = string2xml(xml_buffer);
crm_free(xml_buffer);
crm_log_xml_debug_3(xml_obj, "Created fragment");
return xml_obj;
}
static char *
decompress_file(const char *filename)
{
char *buffer = NULL;
#if HAVE_BZLIB_H
int rc = 0;
size_t length = 0, read_len = 0;
BZFILE *bz_file = NULL;
FILE *input = fopen(filename, "r");
if(input == NULL) {
crm_perror(LOG_ERR,"Could not open %s for reading", filename);
return NULL;
}
bz_file = BZ2_bzReadOpen(&rc, input, 0, 0, NULL, 0);
if ( rc != BZ_OK ) {
BZ2_bzReadClose ( &rc, bz_file);
return NULL;
}
rc = BZ_OK;
while ( rc == BZ_OK ) {
crm_realloc(buffer, XML_BUFFER_SIZE + length + 1);
read_len = BZ2_bzRead (
&rc, bz_file, buffer + length, XML_BUFFER_SIZE);
crm_debug_5("Read %ld bytes from file: %d",
(long)read_len, rc);
if ( rc == BZ_OK || rc == BZ_STREAM_END) {
length += read_len;
}
}
buffer[length] = '\0';
read_len = length;
if ( rc != BZ_STREAM_END ) {
crm_err("Couldnt read compressed xml from file");
crm_free(buffer);
buffer = NULL;
}
BZ2_bzReadClose (&rc, bz_file);
fclose(input);
#else
crm_err("Cannot read compressed files:"
" bzlib was not available at compile time");
#endif
return buffer;
}
xmlNode *
filename2xml(const char *filename)
{
xmlNode *xml = NULL;
xmlDocPtr output = NULL;
xmlParserCtxtPtr ctxt = NULL;
xmlErrorPtr last_error = NULL;
static int xml_options = XML_PARSE_NOBLANKS|XML_PARSE_RECOVER;
/* create a parser context */
ctxt = xmlNewParserCtxt();
CRM_CHECK(ctxt != NULL, return NULL);
/* xmlCtxtUseOptions(ctxt, XML_PARSE_NOBLANKS|XML_PARSE_RECOVER); */
xmlCtxtResetLastError(ctxt);
xmlSetGenericErrorFunc(ctxt, crm_xml_err);
/* initGenericErrorDefaultFunc(crm_xml_err); */
if(filename == NULL) {
/* STDIN_FILENO == fileno(stdin) */
output = xmlCtxtReadFd(ctxt, STDIN_FILENO, "unknown.xml", NULL, xml_options);
} else if(strstr(filename, ".bz2") == NULL) {
output = xmlCtxtReadFile(ctxt, filename, NULL, xml_options);
} else {
char *input = decompress_file(filename);
output = xmlCtxtReadDoc(ctxt, (const xmlChar*)input, NULL, NULL, xml_options);
crm_free(input);
}
if(output) {
xml = xmlDocGetRootElement(output);
}
last_error = xmlCtxtGetLastError(ctxt);
if(last_error && last_error->code != XML_ERR_OK) {
/* crm_abort(__FILE__,__PRETTY_FUNCTION__,__LINE__, "last_error->code != XML_ERR_OK", TRUE, TRUE); */
/*
* http://xmlsoft.org/html/libxml-xmlerror.html#xmlErrorLevel
* http://xmlsoft.org/html/libxml-xmlerror.html#xmlParserErrors
*/
crm_err("Parsing failed (domain=%d, level=%d, code=%d): %s",
last_error->domain, last_error->level,
last_error->code, last_error->message);
if(last_error && last_error->code != XML_ERR_OK) {
crm_err("Couldn't%s parse %s", xml?" fully":"", filename);
if(xml != NULL) {
crm_log_xml_err(xml, "Partial");
}
}
}
xmlFreeParserCtxt(ctxt);
return xml;
}
int
write_xml_file(xmlNode *xml_node, const char *filename, gboolean compress)
{
int res = 0;
time_t now;
char *buffer = NULL;
char *now_str = NULL;
unsigned int out = 0;
FILE *file_output_strm = NULL;
static mode_t cib_mode = S_IRUSR|S_IWUSR;
CRM_CHECK(filename != NULL, return -1);
crm_debug_3("Writing XML out to %s", filename);
crm_validate_data(xml_node);
if (xml_node == NULL) {
crm_err("Cannot write NULL to %s", filename);
return -1;
}
file_output_strm = fopen(filename, "w");
if(file_output_strm == NULL) {
crm_perror(LOG_ERR,"Cannot open %s for writing", filename);
return -1;
}
/* establish the correct permissions */
fchmod(fileno(file_output_strm), cib_mode);
crm_log_xml_debug_4(xml_node, "Writing out");
now = time(NULL);
now_str = ctime(&now);
now_str[24] = EOS; /* replace the newline */
crm_xml_add(xml_node, XML_CIB_ATTR_WRITTEN, now_str);
crm_validate_data(xml_node);
buffer = dump_xml_formatted(xml_node);
CRM_CHECK(buffer != NULL && strlen(buffer) > 0,
crm_log_xml_warn(xml_node, "dump:failed");
goto bail);
if(compress) {
#if HAVE_BZLIB_H
int rc = BZ_OK;
unsigned int in = 0;
BZFILE *bz_file = NULL;
bz_file = BZ2_bzWriteOpen(&rc, file_output_strm, 5, 0, 30);
if(rc != BZ_OK) {
crm_err("bzWriteOpen failed: %d", rc);
} else {
BZ2_bzWrite(&rc,bz_file,buffer,strlen(buffer));
if(rc != BZ_OK) {
crm_err("bzWrite() failed: %d", rc);
}
}
if(rc == BZ_OK) {
BZ2_bzWriteClose(&rc, bz_file, 0, &in, &out);
if(rc != BZ_OK) {
crm_err("bzWriteClose() failed: %d",rc);
out = -1;
} else {
crm_debug_2("%s: In: %d, out: %d", filename, in, out);
}
}
#else
crm_err("Cannot write compressed files:"
" bzlib was not available at compile time");
#endif
}
if(out <= 0) {
res = fprintf(file_output_strm, "%s", buffer);
if(res < 0) {
crm_perror(LOG_ERR,"Cannot write output to %s", filename);
goto bail;
}
}
bail:
if(fflush(file_output_strm) != 0) {
crm_perror(LOG_ERR,"fflush for %s failed:", filename);
res = -1;
}
if(fsync(fileno(file_output_strm)) < 0) {
crm_perror(LOG_ERR,"fsync for %s failed:", filename);
res = -1;
}
fclose(file_output_strm);
crm_debug_3("Saved %d bytes to the Cib as XML", res);
crm_free(buffer);
return res;
}
void
print_xml_formatted(int log_level, const char *function,
xmlNode *msg, const char *text)
{
if(msg == NULL) {
do_crm_log(log_level, "%s: %s: NULL", function, crm_str(text));
return;
}
crm_validate_data(msg);
log_data_element(function, text, log_level, 0, msg, TRUE);
return;
}
static HA_Message*
convert_xml_message_struct(HA_Message *parent, xmlNode *src_node, const char *field)
{
xmlNode *child = NULL;
xmlNode *__crm_xml_iter = src_node->children;
xmlAttrPtr prop_iter = src_node->properties;
const char *name = NULL;
const char *value = NULL;
HA_Message *result = ha_msg_new(3);
ha_msg_add(result, F_XML_TAGNAME, (const char *)src_node->name);
while(prop_iter != NULL) {
name = (const char *)prop_iter->name;
value = (const char *)xmlGetProp(src_node, prop_iter->name);
prop_iter = prop_iter->next;
ha_msg_add(result, name, value);
}
while(__crm_xml_iter != NULL) {
child = __crm_xml_iter;
__crm_xml_iter = __crm_xml_iter->next;
convert_xml_message_struct(result, child, NULL);
}
if(parent == NULL) {
return result;
}
if(field) {
HA_Message *holder = holder = ha_msg_new(3);
CRM_ASSERT(holder != NULL);
ha_msg_add(holder, F_XML_TAGNAME, field);
add_ha_nocopy(holder, result, (const char*)src_node->name);
ha_msg_addstruct_compress(parent, field, holder);
ha_msg_del(holder);
} else {
add_ha_nocopy(parent, result, (const char*)src_node->name);
}
return result;
}
static void
convert_xml_child(HA_Message *msg, xmlNode *xml)
{
int orig = 0;
int rc = BZ_OK;
unsigned int len = 0;
char *buffer = NULL;
char *compressed = NULL;
const char *name = NULL;
name = (const char *)xml->name;
buffer = dump_xml_unformatted(xml);
orig = strlen(buffer);
if(orig < CRM_BZ2_THRESHOLD) {
ha_msg_add(msg, name, buffer);
goto done;
}
len = (orig * 1.1) + 600; /* recomended size */
crm_malloc(compressed, len);
rc = BZ2_bzBuffToBuffCompress(compressed, &len, buffer, orig, CRM_BZ2_BLOCKS, 0, CRM_BZ2_WORK);
if(rc != BZ_OK) {
crm_err("Compression failed: %d", rc);
crm_free(compressed);
convert_xml_message_struct(msg, xml, name);
goto done;
}
crm_free(buffer);
buffer = compressed;
crm_debug_2("Compression details: %d -> %d", orig, len);
ha_msg_addbin(msg, name, buffer, len);
done:
crm_free(buffer);
# if 0
{
unsigned int used = orig;
char *uncompressed = NULL;
crm_debug("Trying to decompress %d bytes", len);
crm_malloc0(uncompressed, orig);
rc = BZ2_bzBuffToBuffDecompress(
uncompressed, &used, compressed, len, 1, 0);
CRM_CHECK(rc == BZ_OK, ;);
CRM_CHECK(used == orig, ;);
crm_debug("rc=%d, used=%d", rc, used);
if(rc != BZ_OK) {
exit(100);
}
crm_debug("Original %s, decompressed %s", buffer, uncompressed);
crm_free(uncompressed);
}
# endif
}
HA_Message*
convert_xml_message(xmlNode *xml)
{
HA_Message *result = NULL;
result = ha_msg_new(3);
ha_msg_add(result, F_XML_TAGNAME, (const char *)xml->name);
xml_prop_iter(xml, name, value, ha_msg_add(result, name, value));
xml_child_iter(xml, child, convert_xml_child(result, child));
return result;
}
static void
convert_ha_field(xmlNode *parent, HA_Message *msg, int lpc)
{
int type = 0;
const char *name = NULL;
const char *value = NULL;
xmlNode *xml = NULL;
int rc = BZ_OK;
size_t orig_len = 0;
unsigned int used = 0;
char *uncompressed = NULL;
char *compressed = NULL;
int size = orig_len * 10;
CRM_CHECK(parent != NULL, return);
CRM_CHECK(msg != NULL, return);
name = msg->names[lpc];
type = cl_get_type(msg, name);
switch(type) {
case FT_STRUCT:
convert_ha_message(parent, msg->values[lpc], name);
break;
case FT_COMPRESS:
case FT_UNCOMPRESS:
convert_ha_message(parent, cl_get_struct(msg, name), name);
break;
case FT_STRING:
value = cl_get_string(msg, name);
CRM_CHECK_AND_STORE(value != NULL, return);
crm_debug_5("Converting %s/%d/%s", name, type, value[0] == '<' ? "xml":"field");
if( value[0] != '<' ) {
crm_xml_add(parent, name, value);
break;
}
/* unpack xml string */
xml = string2xml(value);
if(xml == NULL) {
crm_err("Conversion of field '%s' failed", name);
return;
}
add_node_nocopy(parent, NULL, xml);
break;
case FT_BINARY:
value = cl_get_binary(msg, name, &orig_len);
size = orig_len * 10 + 1; /* +1 because an exact 10x compression factor happens occasionally */
if(orig_len < 3
|| value[0] != 'B'
|| value[1] != 'Z'
|| value[2] != 'h') {
if(strstr(name, "uuid") == NULL) {
crm_err("Skipping non-bzip binary field: %s", name);
}
return;
}
crm_malloc0(compressed, orig_len);
memcpy(compressed, value, orig_len);
crm_debug_2("Trying to decompress %d bytes", (int)orig_len);
retry:
crm_realloc(uncompressed, size);
memset(uncompressed, 0, size);
used = size - 1; /* always leave room for a trailing '\0'
* BZ2_bzBuffToBuffDecompress wont say anything if
* the uncompressed data is exactly 'size' bytes
*/
rc = BZ2_bzBuffToBuffDecompress(
uncompressed, &used, compressed, orig_len, 1, 0);
if(rc == BZ_OUTBUFF_FULL) {
size = size * 2;
/* dont try to allocate more memory than we have */
if(size > 0) {
goto retry;
}
}
if(rc != BZ_OK) {
crm_err("Decompression of %s (%d bytes) into %d failed: %d",
name, (int)orig_len, size, rc);
} else {
CRM_ASSERT(used < size);
CRM_CHECK(uncompressed[used] == 0, uncompressed[used] = 0);
xml = string2xml(uncompressed);
}
if(xml != NULL) {
add_node_copy(parent, xml);
free_xml(xml);
}
crm_free(uncompressed);
crm_free(compressed);
break;
}
}
xmlNode *
convert_ha_message(xmlNode *parent, HA_Message *msg, const char *field)
{
int lpc = 0;
xmlNode *child = NULL;
const char *tag = NULL;
CRM_CHECK_AND_STORE(msg != NULL, crm_err("Empty message for %s", field); return parent);
tag = cl_get_string(msg, F_XML_TAGNAME);
if(tag == NULL) {
tag = field;
} else if(parent && safe_str_neq(field, tag)) {
/* For compatability with 0.6.x */
crm_debug("Creating intermediate parent %s between %s and %s", field, crm_element_name(parent), tag);
parent = create_xml_node(parent, field);
}
if(parent == NULL) {
parent = create_xml_node(NULL, tag);
child = parent;
} else {
child = create_xml_node(parent, tag);
}
for (lpc = 0; lpc < msg->nfields; lpc++) {
convert_ha_field(child, msg, lpc);
}
return parent;
}
xmlNode *convert_ipc_message(IPC_Message *msg, const char *field)
{
HA_Message *hmsg = wirefmt2msg((char *)msg->msg_body, msg->msg_len, 0);
xmlNode *xml = convert_ha_message(NULL, hmsg, __FUNCTION__);
crm_msg_del(hmsg);
return xml;
}
xmlNode *
get_message_xml(xmlNode *msg, const char *field)
{
xmlNode *tmp = first_named_child(msg, field);
return first_named_child(tmp, NULL);
}
gboolean
add_message_xml(xmlNode *msg, const char *field, xmlNode *xml)
{
xmlNode *holder = create_xml_node(msg, field);
add_node_copy(holder, xml);
return TRUE;
}
static char *
dump_xml(xmlNode *an_xml_node, gboolean formatted, gboolean for_digest)
{
int len = 0;
char *buffer = NULL;
xmlBuffer *xml_buffer = NULL;
xmlDoc *doc = getDocPtr(an_xml_node);
/* doc will only be NULL if an_xml_node is */
CRM_CHECK(doc != NULL, return NULL);
xml_buffer = xmlBufferCreate();
CRM_ASSERT(xml_buffer != NULL);
len = xmlNodeDump(xml_buffer, doc, an_xml_node, 0, formatted);
if(len > 0) {
if(for_digest) {
/* for compatability with the old result which is used for digests */
len += 3;
crm_malloc0(buffer, len);
snprintf(buffer, len, " %s\n", (char *)xml_buffer->content);
} else {
buffer = crm_strdup((char *)xml_buffer->content);
}
} else {
crm_err("Conversion failed");
}
xmlBufferFree(xml_buffer);
return buffer;
}
char *
dump_xml_formatted(xmlNode *an_xml_node)
{
return dump_xml(an_xml_node, TRUE, FALSE);
}
char *
dump_xml_unformatted(xmlNode *an_xml_node)
{
return dump_xml(an_xml_node, FALSE, FALSE);
}
#define update_buffer() do { \
if(printed < 0) { \
crm_perror(LOG_ERR,"snprintf failed"); \
goto print; \
} else if(printed >= (buffer_len - offset)) { \
crm_err("Output truncated: available=%d, needed=%d", buffer_len - offset, printed); \
offset += printed; \
goto print; \
} else if(offset >= buffer_len) { \
crm_err("Buffer exceeded"); \
offset += printed; \
goto print; \
} else { \
offset += printed; \
} \
} while(0)
int
print_spaces(char *buffer, int depth, int max)
{
int lpc = 0;
int spaces = 2*depth;
max--;
/* <= so that we always print 1 space - prevents problems with syslog */
for(lpc = 0; lpc <= spaces && lpc < max; lpc++) {
if(sprintf(buffer+lpc, "%c", ' ') < 1) {
return -1;
}
}
return lpc;
}
int
log_data_element(
const char *function, const char *prefix, int log_level, int depth,
xmlNode *data, gboolean formatted)
{
int child_result = 0;
int offset = 0;
int printed = 0;
char *buffer = NULL;
int buffer_len = 1000;
const char *name = NULL;
const char *hidden = NULL;
if(data == NULL) {
crm_warn("No data to dump as XML");
return 0;
}
name = crm_element_name(data);
CRM_ASSERT(name != NULL);
crm_debug_5("Dumping %s", name);
crm_malloc0(buffer, buffer_len);
if(formatted) {
offset = print_spaces(buffer, depth, buffer_len - offset);
}
printed = snprintf(buffer + offset, buffer_len - offset, "<%s", name);
update_buffer();
hidden = crm_element_value(data, "hidden");
xml_prop_iter(
data, prop_name, prop_value,
if(prop_name == NULL
|| safe_str_eq(F_XML_TAGNAME, prop_name)) {
continue;
} else if(hidden != NULL
&& prop_name[0] != 0
&& strstr(hidden, prop_name) != NULL) {
prop_value = "*****";
}
crm_debug_5("Dumping <%s %s=\"%s\"...",
name, prop_name, prop_value);
printed = snprintf(buffer + offset, buffer_len - offset,
" %s=\"%s\"", prop_name, prop_value);
update_buffer();
);
printed = snprintf(buffer + offset, buffer_len - offset,
" %s>", xml_has_children(data)?"":"/");
update_buffer();
print:
do_crm_log(log_level, "%s: %s%s", function, prefix?prefix:"", buffer);
if(xml_has_children(data) == FALSE) {
crm_free(buffer);
return 0;
}
xml_child_iter(
data, a_child,
child_result = log_data_element(
function, prefix, log_level, depth+1, a_child, formatted);
);
if(formatted) {
offset = print_spaces(buffer, depth, buffer_len);
}
do_crm_log(log_level, "%s: %s%s</%s>", function, prefix?prefix:"", buffer, name);
crm_free(buffer);
return 1;
}
gboolean
xml_has_children(const xmlNode *xml_root)
{
if(xml_root != NULL && xml_root->children != NULL) {
return TRUE;
}
return FALSE;
}
void
xml_validate(const xmlNode *xml_root)
{
CRM_ASSERT(xml_root != NULL);
}
int
crm_element_value_int(xmlNode *data, const char *name, int *dest)
{
const char *value = crm_element_value(data, name);
CRM_CHECK(dest != NULL, return -1);
if(value) {
*dest = crm_int_helper(value, NULL);
return 0;
}
return -1;
}
const char *
crm_element_value_const(const xmlNode *data, const char *name)
{
return crm_element_value((xmlNode*)data, name);
}
char *
crm_element_value_copy(xmlNode *data, const char *name)
{
char *value_copy = NULL;
const char *value = crm_element_value(data, name);
if(value != NULL) {
value_copy = crm_strdup(value);
}
return value_copy;
}
void
xml_remove_prop(xmlNode *obj, const char *name)
{
xmlUnsetProp(obj, (const xmlChar*)name);
}
void
log_xml_diff(unsigned int log_level, xmlNode *diff, const char *function)
{
xmlNode *added = find_xml_node(diff, "diff-added", FALSE);
xmlNode *removed = find_xml_node(diff, "diff-removed", FALSE);
gboolean is_first = TRUE;
if(crm_log_level < log_level) {
/* nothing will ever be printed */
return;
}
xml_child_iter(
removed, child,
log_data_element(function, "-", log_level, 0, child, TRUE);
if(is_first) {
is_first = FALSE;
} else {
do_crm_log(log_level, " --- ");
}
);
is_first = TRUE;
xml_child_iter(
added, child,
log_data_element(function, "+", log_level, 0, child, TRUE);
if(is_first) {
is_first = FALSE;
} else {
do_crm_log(log_level, " +++ ");
}
);
}
void
purge_diff_markers(xmlNode *a_node)
{
CRM_CHECK(a_node != NULL, return);
xml_remove_prop(a_node, XML_DIFF_MARKER);
xml_child_iter(a_node, child,
purge_diff_markers(child);
);
}
gboolean
apply_xml_diff(xmlNode *old, xmlNode *diff, xmlNode **new)
{
gboolean result = TRUE;
const char *digest = crm_element_value(diff, XML_ATTR_DIGEST);
xmlNode *added = find_xml_node(diff, "diff-added", FALSE);
xmlNode *removed = find_xml_node(diff, "diff-removed", FALSE);
int root_nodes_seen = 0;
CRM_CHECK(new != NULL, return FALSE);
crm_debug_2("Substraction Phase");
xml_child_iter(removed, child_diff,
CRM_CHECK(root_nodes_seen == 0, result = FALSE);
if(root_nodes_seen == 0) {
*new = subtract_xml_object(old, child_diff, NULL);
}
root_nodes_seen++;
);
if(root_nodes_seen == 0) {
*new = copy_xml(old);
} else if(root_nodes_seen > 1) {
crm_err("(-) Diffs cannot contain more than one change set..."
" saw %d", root_nodes_seen);
result = FALSE;
}
root_nodes_seen = 0;
crm_debug_2("Addition Phase");
if(result) {
xml_child_iter(added, child_diff,
CRM_CHECK(root_nodes_seen == 0, result = FALSE);
if(root_nodes_seen == 0) {
add_xml_object(NULL, *new, child_diff);
}
root_nodes_seen++;
);
}
if(root_nodes_seen > 1) {
crm_err("(+) Diffs cannot contain more than one change set..."
" saw %d", root_nodes_seen);
result = FALSE;
} else if(result && digest) {
char *new_digest = calculate_xml_digest(*new, FALSE, TRUE);
if(safe_str_neq(new_digest, digest)) {
crm_info("Digest mis-match: expected %s, calculated %s",
digest, new_digest);
result = FALSE;
} else {
crm_debug_2("Digest matched: expected %s, calculated %s",
digest, new_digest);
}
crm_free(new_digest);
} else if(result) {
int lpc = 0;
xmlNode *intermediate = NULL;
xmlNode *diff_of_diff = NULL;
xmlNode *calc_added = NULL;
xmlNode *calc_removed = NULL;
const char *value = NULL;
const char *name = NULL;
const char *version_attrs[] = {
XML_ATTR_NUMUPDATES,
XML_ATTR_GENERATION,
XML_ATTR_GENERATION_ADMIN
};
crm_debug_2("Verification Phase");
intermediate = diff_xml_object(old, *new, FALSE);
calc_added = find_xml_node(intermediate, "diff-added", FALSE);
calc_removed = find_xml_node(intermediate, "diff-removed", FALSE);
/* add any version details to the diff so they match */
for(lpc = 0; lpc < DIMOF(version_attrs); lpc++) {
name = version_attrs[lpc];
value = crm_element_value(added, name);
crm_xml_add(calc_added, name, value);
value = crm_element_value(removed, name);
crm_xml_add(calc_removed, name, value);
}
diff_of_diff = diff_xml_object(intermediate, diff, TRUE);
if(diff_of_diff != NULL) {
crm_info("Diff application failed!");
crm_log_xml_debug(old, "diff:original");
crm_log_xml_debug(diff, "diff:input");
result = FALSE;
}
free_xml(diff_of_diff);
free_xml(intermediate);
diff_of_diff = NULL;
intermediate = NULL;
}
if(result) {
purge_diff_markers(*new);
}
return result;
}
xmlNode *
diff_xml_object(xmlNode *old, xmlNode *new, gboolean suppress)
{
xmlNode *diff = NULL;
xmlNode *tmp1 = NULL;
xmlNode *added = NULL;
xmlNode *removed = NULL;
tmp1 = subtract_xml_object(old, new, "removed:top");
if(tmp1 != NULL) {
if(suppress && can_prune_leaf(tmp1)) {
free_xml(tmp1);
} else {
diff = create_xml_node(NULL, "diff");
removed = create_xml_node(diff, "diff-removed");
added = create_xml_node(diff, "diff-added");
add_node_nocopy(removed, NULL, tmp1);
}
}
tmp1 = subtract_xml_object(new, old, "added:top");
if(tmp1 != NULL) {
if(suppress && can_prune_leaf(tmp1)) {
free_xml(tmp1);
return diff;
}
if(diff == NULL) {
diff = create_xml_node(NULL, "diff");
}
if(removed == NULL) {
removed = create_xml_node(diff, "diff-removed");
}
if(added == NULL) {
added = create_xml_node(diff, "diff-added");
}
add_node_nocopy(added, NULL, tmp1);
}
return diff;
}
gboolean
can_prune_leaf(xmlNode *xml_node)
{
gboolean can_prune = TRUE;
/* return FALSE; */
xml_prop_iter(xml_node, prop_name, prop_value,
if(safe_str_eq(prop_name, XML_ATTR_ID)) {
continue;
}
can_prune = FALSE;
);
xml_child_iter(xml_node, child,
if(can_prune_leaf(child)) {
free_xml(child);
} else {
can_prune = FALSE;
}
);
return can_prune;
}
void
diff_filter_context(int context, int upper_bound, int lower_bound,
xmlNode *xml_node, xmlNode *parent)
{
xmlNode *us = NULL;
xmlNode *new_parent = parent;
const char *name = crm_element_name(xml_node);
CRM_CHECK(xml_node != NULL && name != NULL, return);
us = create_xml_node(parent, name);
xml_prop_iter(xml_node, prop_name, prop_value,
lower_bound = context;
crm_xml_add(us, prop_name, prop_value);
);
if(lower_bound >= 0 || upper_bound >= 0) {
crm_xml_add(us, XML_ATTR_ID, ID(xml_node));
new_parent = us;
} else {
upper_bound = in_upper_context(0, context, xml_node);
if(upper_bound >= 0) {
crm_xml_add(us, XML_ATTR_ID, ID(xml_node));
new_parent = us;
} else {
free_xml(us);
us = NULL;
}
}
xml_child_iter(us, child,
diff_filter_context(
context, upper_bound-1, lower_bound-1,
child, new_parent);
);
}
int
in_upper_context(int depth, int context, xmlNode *xml_node)
{
gboolean has_attributes = FALSE;
if(context == 0) {
return 0;
}
xml_prop_iter(xml_node, prop_name, prop_value,
has_attributes = TRUE;
break;
);
if(has_attributes) {
return depth;
} else if(depth < context) {
xml_child_iter(xml_node, child,
if(in_upper_context(depth+1, context, child)) {
return depth;
}
);
}
return 0;
}
xmlNode *
subtract_xml_object(xmlNode *left, xmlNode *right, const char *marker)
{
gboolean skip = FALSE;
gboolean differences = FALSE;
xmlNode *diff = NULL;
xmlNode *child_diff = NULL;
xmlNode *right_child = NULL;
const char *id = NULL;
const char *name = NULL;
const char *value = NULL;
const char *right_val = NULL;
int lpc = 0;
static int filter_len = DIMOF(filter);
if(left == NULL) {
return NULL;
}
id = ID(left);
if(right == NULL) {
xmlNode *deleted = NULL;
crm_debug_5("Processing <%s id=%s> (complete copy)",
crm_element_name(left), id);
deleted = copy_xml(left);
crm_xml_add(deleted, XML_DIFF_MARKER, marker);
return deleted;
}
name = crm_element_name(left);
CRM_CHECK(name != NULL, return NULL);
diff = create_xml_node(NULL, name);
/* changes to name/value pairs */
xml_prop_iter(left, prop_name, left_value,
if(crm_str_eq(prop_name, XML_ATTR_ID, TRUE)) {
continue;
}
skip = FALSE;
for(lpc = 0; skip == FALSE && lpc < filter_len; lpc++){
if(crm_str_eq(prop_name, filter[lpc], TRUE)) {
skip = TRUE;
}
}
if(skip) { continue; }
right_val = crm_element_value(right, prop_name);
if(right_val == NULL) {
/* new */
differences = TRUE;
crm_xml_add(diff, prop_name, left_value);
} else if(strcmp(left_value, right_val) == 0) {
/* unchanged */
} else {
/* changed */
differences = TRUE;
crm_xml_add(diff, prop_name, left_value);
}
);
/* changes to child objects */
xml_child_iter(
left, left_child,
right_child = find_entity(
right, crm_element_name(left_child), ID(left_child));
child_diff = subtract_xml_object(
left_child, right_child, marker);
if(child_diff != NULL) {
differences = TRUE;
add_node_nocopy(diff, NULL, child_diff);
}
);
if(differences == FALSE) {
/* check for XML_DIFF_MARKER in a child */
xml_child_iter(
right, right_child,
value = crm_element_value(right_child, XML_DIFF_MARKER);
if(value != NULL && safe_str_eq(value, "removed:top")) {
crm_debug_3("Found the root of the deletion: %s", name);
differences = TRUE;
break;
}
);
}
if(differences == FALSE) {
free_xml(diff);
crm_debug_5("\tNo changes to <%s id=%s>", crm_str(name), id);
return NULL;
}
crm_xml_add(diff, XML_ATTR_ID, id);
return diff;
}
int
add_xml_object(xmlNode *parent, xmlNode *target, xmlNode *update)
{
const char *object_id = NULL;
const char *object_name = NULL;
#if XML_PARSE_DEBUG
crm_log_xml(LOG_DEBUG_5, "update:", update);
crm_log_xml(LOG_DEBUG_5, "target:", target);
#endif
CRM_CHECK(update != NULL, return 0);
object_name = crm_element_name(update);
object_id = ID(update);
CRM_CHECK(object_name != NULL, return 0);
if(target == NULL && object_id == NULL) {
/* placeholder object */
target = find_xml_node(parent, object_name, FALSE);
} else if(target == NULL) {
target = find_entity(parent, object_name, object_id);
}
if(target == NULL) {
target = create_xml_node(parent, object_name);
CRM_CHECK(target != NULL, return 0);
#if XML_PARSER_DEBUG
crm_debug_2("Added <%s%s%s/>", crm_str(object_name),
object_id?" id=":"", object_id?object_id:"");
} else {
crm_debug_3("Found node <%s%s%s/> to update",
crm_str(object_name),
object_id?" id=":"", object_id?object_id:"");
#endif
}
copy_in_properties(target, update);
xml_child_iter(
update, a_child,
#if XML_PARSER_DEBUG
crm_debug_4("Updating child <%s id=%s>",
crm_element_name(a_child), ID(a_child));
#endif
add_xml_object(target, NULL, a_child);
);
#if XML_PARSER_DEBUG
crm_debug_3("Finished with <%s id=%s>",
crm_str(object_name), crm_str(object_id));
#endif
return 0;
}
gboolean
update_xml_child(xmlNode *child, xmlNode *to_update)
{
gboolean can_update = TRUE;
CRM_CHECK(child != NULL, return FALSE);
CRM_CHECK(to_update != NULL, return FALSE);
if(safe_str_neq(crm_element_name(to_update), crm_element_name(child))) {
can_update = FALSE;
} else if(safe_str_neq(ID(to_update), ID(child))) {
can_update = FALSE;
} else if(can_update) {
#if XML_PARSER_DEBUG
crm_log_xml_debug_2(child, "Update match found...");
#endif
add_xml_object(NULL, child, to_update);
}
xml_child_iter(
child, child_of_child,
/* only update the first one */
if(can_update) {
break;
}
can_update = update_xml_child(child_of_child, to_update);
);
return can_update;
}
int
find_xml_children(xmlNode **children, xmlNode *root,
const char *tag, const char *field, const char *value,
gboolean search_matches)
{
int match_found = 0;
CRM_CHECK(root != NULL, return FALSE);
CRM_CHECK(children != NULL, return FALSE);
if(tag != NULL && safe_str_neq(tag, crm_element_name(root))) {
} else if(value != NULL
&& safe_str_neq(value, crm_element_value(root, field))) {
} else {
if(*children == NULL) {
*children = create_xml_node(NULL, __FUNCTION__);
}
add_node_copy(*children, root);
match_found = 1;
}
if(search_matches || match_found == 0) {
xml_child_iter(
root, child,
match_found += find_xml_children(
children, child, tag, field, value,
search_matches);
);
}
return match_found;
}
gboolean
replace_xml_child(xmlNode *parent, xmlNode *child, xmlNode *update, gboolean delete_only)
{
gboolean can_delete = FALSE;
const char *up_id = NULL;
const char *child_id = NULL;
const char *right_val = NULL;
CRM_CHECK(child != NULL, return FALSE);
CRM_CHECK(update != NULL, return FALSE);
up_id = ID(update);
child_id = ID(child);
if(up_id == NULL || safe_str_eq(child_id, up_id)) {
can_delete = TRUE;
}
if(safe_str_neq(crm_element_name(update), crm_element_name(child))) {
can_delete = FALSE;
}
if(can_delete && delete_only) {
xml_prop_iter(update, prop_name, left_value,
right_val = crm_element_value(child, prop_name);
if(safe_str_neq(left_value, right_val)) {
can_delete = FALSE;
}
);
}
if(can_delete && parent != NULL) {
crm_log_xml_debug_4(child, "Delete match found...");
if(delete_only || update == NULL) {
free_xml_from_parent(NULL, child);
} else {
xmlNode *tmp = copy_xml(update);
xmlNode *old = xmlReplaceNode(child, tmp);
free_xml_from_parent(NULL, old);
}
child = NULL;
return TRUE;
} else if(can_delete) {
crm_log_xml_debug(child, "Cannot delete the search root");
can_delete = FALSE;
}
xml_child_iter(
child, child_of_child,
/* only delete the first one */
if(can_delete) {
break;
}
can_delete = replace_xml_child(child, child_of_child, update, delete_only);
);
return can_delete;
}
void
hash2nvpair(gpointer key, gpointer value, gpointer user_data)
{
const char *name = key;
const char *s_value = value;
xmlNode *xml_node = user_data;
xmlNode *xml_child = create_xml_node(xml_node, XML_CIB_TAG_NVPAIR);
crm_xml_add(xml_child, XML_ATTR_ID, name);
crm_xml_add(xml_child, XML_NVPAIR_ATTR_NAME, name);
crm_xml_add(xml_child, XML_NVPAIR_ATTR_VALUE, s_value);
crm_debug_3("dumped: name=%s value=%s", name, s_value);
}
void
hash2smartfield(gpointer key, gpointer value, gpointer user_data)
{
const char *name = key;
const char *s_value = value;
xmlNode *xml_node = user_data;
if(isdigit(name[0])) {
xmlNode *tmp = create_xml_node(xml_node, XML_TAG_PARAM);
crm_xml_add(tmp, XML_NVPAIR_ATTR_NAME, name);
crm_xml_add(tmp, XML_NVPAIR_ATTR_VALUE, s_value);
} else if(crm_element_value(xml_node, name) == NULL) {
crm_xml_add(xml_node, name, s_value);
crm_debug_3("dumped: %s=%s", name, s_value);
} else {
crm_debug_2("duplicate: %s=%s", name, s_value);
}
}
void
hash2field(gpointer key, gpointer value, gpointer user_data)
{
const char *name = key;
const char *s_value = value;
xmlNode *xml_node = user_data;
if(crm_element_value(xml_node, name) == NULL) {
crm_xml_add(xml_node, name, s_value);
crm_debug_3("dumped: %s=%s", name, s_value);
} else {
crm_debug_2("duplicate: %s=%s", name, s_value);
}
}
void
hash2metafield(gpointer key, gpointer value, gpointer user_data)
{
char *crm_name = NULL;
if(key == NULL || value == NULL) {
return;
} else if(((char*)key)[0] == '#') {
return;
} else if(strstr(key, ":")) {
return;
}
crm_name = crm_meta_name(key);
hash2field(crm_name, value, user_data);
crm_free(crm_name);
}
GHashTable *
xml2list(xmlNode *parent)
{
xmlNode *nvpair_list = NULL;
GHashTable *nvpair_hash = g_hash_table_new_full(
g_str_hash, g_str_equal,
g_hash_destroy_str, g_hash_destroy_str);
CRM_CHECK(parent != NULL, return nvpair_hash);
nvpair_list = find_xml_node(parent, XML_TAG_ATTRS, FALSE);
if(nvpair_list == NULL) {
crm_debug_2("No attributes in %s",
crm_element_name(parent));
crm_log_xml_debug_2(
parent,"No attributes for resource op");
}
crm_log_xml_debug_3(nvpair_list, "Unpacking");
xml_prop_iter(
nvpair_list, key, value,
crm_debug_4("Added %s=%s", key, value);
g_hash_table_insert(
nvpair_hash, crm_strdup(key), crm_strdup(value));
);
xml_child_iter_filter(
nvpair_list, child, XML_TAG_PARAM,
const char *key = crm_element_value(child, XML_NVPAIR_ATTR_NAME);
const char *value = crm_element_value(child, XML_NVPAIR_ATTR_VALUE);
crm_debug_4("Added %s=%s", key, value);
if(key != NULL && value != NULL) {
g_hash_table_insert(nvpair_hash, crm_strdup(key), crm_strdup(value));
}
);
return nvpair_hash;
}
typedef struct name_value_s
{
const char *name;
const void *value;
} name_value_t;
static gint
sort_pairs(gconstpointer a, gconstpointer b)
{
int rc = 0;
const name_value_t *pair_a = a;
const name_value_t *pair_b = b;
CRM_ASSERT(a != NULL);
CRM_ASSERT(pair_a->name != NULL);
CRM_ASSERT(b != NULL);
CRM_ASSERT(pair_b->name != NULL);
rc = strcmp(pair_a->name, pair_b->name);
if(rc < 0) {
return -1;
} else if(rc > 0) {
return 1;
}
return 0;
}
static void
dump_pair(gpointer data, gpointer user_data)
{
name_value_t *pair = data;
xmlNode *parent = user_data;
crm_xml_add(parent, pair->name, pair->value);
}
xmlNode *
sorted_xml(xmlNode *input, xmlNode *parent, gboolean recursive)
{
GListPtr sorted = NULL;
GListPtr unsorted = NULL;
name_value_t *pair = NULL;
xmlNode *result = NULL;
const char *name = crm_element_name(input);
CRM_CHECK(input != NULL, return NULL);
name = crm_element_name(input);
CRM_CHECK(name != NULL, return NULL);
result = create_xml_node(parent, name);
xml_prop_iter(input, p_name, p_value,
crm_malloc0(pair, sizeof(name_value_t));
pair->name = p_name;
pair->value = p_value;
unsorted = g_list_prepend(unsorted, pair);
pair = NULL;
);
sorted = g_list_sort(unsorted, sort_pairs);
g_list_foreach(sorted, dump_pair, result);
slist_destroy(name_value_t, child, sorted, crm_free(child));
if(recursive) {
xml_child_iter(input, child, sorted_xml(child, result, recursive));
} else {
xml_child_iter(input, child, add_node_copy(result, child));
}
return result;
}
static void
filter_xml(xmlNode *data, const char **filter, int filter_len, gboolean recursive)
{
int lpc = 0;
for(lpc = 0; lpc < filter_len; lpc++) {
xml_remove_prop(data, filter[lpc]);
}
if(recursive == FALSE) {
return;
}
xml_child_iter(data, child, filter_xml(child, filter, filter_len, recursive));
}
/* "c048eae664dba840e1d2060f00299e9d" */
char *
calculate_xml_digest(xmlNode *input, gboolean sort, gboolean do_filter)
{
int i = 0;
int digest_len = 16;
char *digest = NULL;
unsigned char *raw_digest = NULL;
xmlNode *sorted = NULL;
char *buffer = NULL;
size_t buffer_len = 0;
if(sort || do_filter) {
sorted = sorted_xml(input, NULL, TRUE);
} else {
sorted = copy_xml(input);
}
if(do_filter) {
filter_xml(sorted, filter, DIMOF(filter), TRUE);
}
buffer = dump_xml(sorted, FALSE, TRUE);
buffer_len = strlen(buffer);
CRM_CHECK(buffer != NULL && buffer_len > 0, free_xml(sorted); crm_free(buffer); return NULL);
crm_malloc(digest, (2 * digest_len + 1));
crm_malloc(raw_digest, (digest_len + 1));
MD5((unsigned char *)buffer, buffer_len, raw_digest);
for(i = 0; i < digest_len; i++) {
sprintf(digest+(2*i), "%02x", raw_digest[i]);
}
digest[(2*digest_len)] = 0;
crm_debug_2("Digest %s: %s\n", digest, buffer);
crm_log_xml(LOG_DEBUG_3, "digest:source", sorted);
crm_free(buffer);
crm_free(raw_digest);
free_xml(sorted);
return digest;
}
#if HAVE_LIBXML2
# include <libxml/parser.h>
# include <libxml/tree.h>
# include <libxml/relaxng.h>
# include <libxslt/xslt.h>
# include <libxslt/transform.h>
#endif
static gboolean
validate_with_dtd(
xmlDocPtr doc, gboolean to_logs, const char *dtd_file)
{
gboolean valid = TRUE;
xmlDtdPtr dtd = NULL;
xmlValidCtxtPtr cvp = NULL;
CRM_CHECK(doc != NULL, return FALSE);
CRM_CHECK(dtd_file != NULL, return FALSE);
dtd = xmlParseDTD(NULL, (const xmlChar *)dtd_file);
CRM_CHECK(dtd != NULL, crm_err("Could not find/parse %s", dtd_file); goto cleanup);
cvp = xmlNewValidCtxt();
CRM_CHECK(cvp != NULL, goto cleanup);
if(to_logs) {
cvp->userData = (void *) LOG_ERR;
cvp->error = (xmlValidityErrorFunc) cl_log;
cvp->warning = (xmlValidityWarningFunc) cl_log;
} else {
cvp->userData = (void *) stderr;
cvp->error = (xmlValidityErrorFunc) fprintf;
cvp->warning = (xmlValidityWarningFunc) fprintf;
}
if (!xmlValidateDtd(cvp, doc, dtd)) {
valid = FALSE;
}
cleanup:
if(cvp) {
xmlFreeValidCtxt(cvp);
}
if(dtd) {
xmlFreeDtd(dtd);
}
return valid;
}
xmlNode *first_named_child(xmlNode *parent, const char *name)
{
xml_child_iter_filter(parent, match, name, return match);
return NULL;
}
#if 0
static void relaxng_invalid_stderr(void * userData, xmlErrorPtr error)
{
/*
Structure xmlError
struct _xmlError {
int domain : What part of the library raised this er
int code : The error code, e.g. an xmlParserError
char * message : human-readable informative error messag
xmlErrorLevel level : how consequent is the error
char * file : the filename
int line : the line number if available
char * str1 : extra string information
char * str2 : extra string information
char * str3 : extra string information
int int1 : extra number information
int int2 : column number of the error or 0 if N/A
void * ctxt : the parser context if available
void * node : the node in the tree
}
*/
crm_err("Structured error: line=%d, level=%d %s",
error->line, error->level, error->message);
}
#endif
static gboolean
validate_with_relaxng(
xmlDocPtr doc, gboolean to_logs, const char *relaxng_file)
{
gboolean valid = TRUE;
int rc = 0;
xmlRelaxNGPtr rng = NULL;
xmlRelaxNGValidCtxtPtr valid_ctx = NULL;
xmlRelaxNGParserCtxtPtr parser_ctx = NULL;
CRM_CHECK(doc != NULL, return FALSE);
CRM_CHECK(relaxng_file != NULL, return FALSE);
xmlLoadExtDtdDefaultValue = 1;
parser_ctx = xmlRelaxNGNewParserCtxt(relaxng_file);
CRM_CHECK(parser_ctx != NULL, goto cleanup);
if(to_logs) {
xmlRelaxNGSetParserErrors(parser_ctx,
(xmlRelaxNGValidityErrorFunc) cl_log,
(xmlRelaxNGValidityWarningFunc) cl_log,
GUINT_TO_POINTER(LOG_ERR));
} else {
xmlRelaxNGSetParserErrors(parser_ctx,
(xmlRelaxNGValidityErrorFunc) fprintf,
(xmlRelaxNGValidityWarningFunc) fprintf,
stderr);
}
rng = xmlRelaxNGParse(parser_ctx);
CRM_CHECK(rng != NULL, crm_err("Could not find/parse %s", relaxng_file); goto cleanup);
valid_ctx = xmlRelaxNGNewValidCtxt(rng);
CRM_CHECK(valid_ctx != NULL, goto cleanup);
if(to_logs) {
xmlRelaxNGSetValidErrors(valid_ctx,
(xmlRelaxNGValidityErrorFunc) cl_log,
(xmlRelaxNGValidityWarningFunc) cl_log,
GUINT_TO_POINTER(LOG_ERR));
} else {
xmlRelaxNGSetValidErrors(valid_ctx,
(xmlRelaxNGValidityErrorFunc) fprintf,
(xmlRelaxNGValidityWarningFunc) fprintf,
stderr);
}
/* xmlRelaxNGSetValidStructuredErrors( */
/* valid_ctx, relaxng_invalid_stderr, valid_ctx); */
xmlLineNumbersDefault(1);
rc = xmlRelaxNGValidateDoc(valid_ctx, doc);
if (rc > 0) {
valid = FALSE;
} else if (rc < 0) {
crm_err("Internal libxml error during validation\n");
}
cleanup:
if(parser_ctx != NULL) {
xmlRelaxNGFreeParserCtxt(parser_ctx);
xmlCleanupParser();
}
if(valid_ctx != NULL) {
xmlRelaxNGFreeValidCtxt(valid_ctx);
}
if (rng != NULL) {
xmlRelaxNGFree(rng);
}
return valid;
}
static gboolean validate_with(xmlNode *xml, int method, gboolean to_logs)
{
xmlDocPtr doc = NULL;
gboolean valid = FALSE;
int type = known_schemas[method].type;
const char *file = known_schemas[method].location;
CRM_CHECK(xml != NULL, return FALSE);
doc = getDocPtr(xml);
crm_debug_2("Validating with: %s (type=%d)", crm_str(file), type);
switch(type) {
case 0:
valid = TRUE;
break;
case 1:
valid = validate_with_dtd(doc, to_logs, file);
break;
case 2:
valid = validate_with_relaxng(doc, to_logs, file);
break;
default:
crm_err("Unknown validator type: %d", type);
break;
}
return valid;
}
#include <stdio.h>
static void dump_file(const char *filename)
{
FILE *fp = NULL;
int ch, line = 0;
CRM_CHECK(filename != NULL, return);
fp = fopen(filename, "r");
CRM_CHECK(fp != NULL, return);
fprintf(stderr, "%4d ", ++line);
do {
ch = getc(fp);
if(ch == EOF) {
putc('\n', stderr);
break;
} else if(ch == '\n') {
fprintf(stderr, "\n%4d ", ++line);
} else {
putc(ch, stderr);
}
} while(1);
fclose(fp);
}
gboolean validate_xml_verbose(xmlNode *xml_blob)
{
xmlDoc *doc = NULL;
xmlNode *xml = NULL;
gboolean rc = FALSE;
char *filename = NULL;
static char *template = NULL;
if(template == NULL) {
template = crm_strdup(CRM_STATE_DIR"/cib-invalid.XXXXXX");
}
filename = mktemp(template);
write_xml_file(xml_blob, filename, FALSE);
dump_file(filename);
doc = xmlParseFile(filename);
xml = xmlDocGetRootElement(doc);
rc = validate_xml(xml, NULL, FALSE);
free_xml(xml);
return rc;
}
gboolean validate_xml(xmlNode *xml_blob, const char *validation, gboolean to_logs)
{
int lpc = 0;
if(validation == NULL) {
validation = crm_element_value(xml_blob, XML_ATTR_VALIDATION);
}
if(validation == NULL) {
validation = crm_element_value(xml_blob, "ignore-dtd");
if(crm_is_true(validation)) {
validation = "none";
} else {
validation = "transitional-0.6";
}
}
if(safe_str_eq(validation, "none")) {
return TRUE;
}
for(; lpc < all_schemas; lpc++) {
if(safe_str_eq(validation, known_schemas[lpc].name)) {
return validate_with(xml_blob, lpc, to_logs);
}
}
crm_err("Unknown validator: %s", validation);
return FALSE;
}
static xmlNode *apply_transformation(xmlNode *xml, const char *transform)
{
xmlNode *out = NULL;
xmlDocPtr res = NULL;
xmlDocPtr doc = NULL;
xsltStylesheet *xslt = NULL;
CRM_CHECK(xml != NULL, return FALSE);
doc = getDocPtr(xml);
xmlLoadExtDtdDefaultValue = 1;
xmlSubstituteEntitiesDefault(1);
xslt = xsltParseStylesheetFile((const xmlChar *)transform);
CRM_CHECK(xslt != NULL, goto cleanup);
res = xsltApplyStylesheet(xslt, doc, NULL);
CRM_CHECK(res != NULL, goto cleanup);
out = xmlDocGetRootElement(res);
cleanup:
if(xslt) {
xsltFreeStylesheet(xslt);
}
xsltCleanupGlobals();
xmlCleanupParser();
return out;
}
const char *get_schema_name(int version)
{
if(version < 0 || version >= all_schemas) {
return "unknown";
}
return known_schemas[version].name;
}
int get_schema_version(const char *name)
{
int lpc = 0;
for(; lpc < all_schemas; lpc++) {
if(safe_str_eq(name, known_schemas[lpc].name)) {
return lpc;
}
}
return -1;
}
/* set which validation to use */
#include <crm/cib.h>
int update_validation(
xmlNode **xml_blob, int *best, gboolean transform, gboolean to_logs)
{
xmlNode *xml = NULL;
char *value = NULL;
int lpc = 0, match = -1, rc = cib_ok;
CRM_CHECK(best != NULL, return cib_invalid_argument);
CRM_CHECK(xml_blob != NULL, return cib_invalid_argument);
CRM_CHECK(*xml_blob != NULL, return cib_invalid_argument);
*best = 0;
xml = *xml_blob;
value = crm_element_value_copy(xml, XML_ATTR_VALIDATION);
if(value != NULL) {
match = get_schema_version(value);
lpc = match;
if(lpc >= 0 && transform == FALSE) {
lpc++;
} else if(lpc < 0) {
crm_debug("Unknown validation type");
lpc = 0;
}
}
if(match >= max_schemas) {
/* nothing to do */
crm_free(value);
*best = match;
return cib_ok;
}
for(; lpc < max_schemas; lpc++) {
gboolean valid = TRUE;
crm_debug("Testing '%s' validation", known_schemas[lpc].name?known_schemas[lpc].name:"<unset>");
valid = validate_with(xml, lpc, to_logs);
if(valid) {
*best = lpc;
}
if(valid && transform) {
xmlNode *upgrade = NULL;
int next = known_schemas[lpc].after_transform;
if(next <= 0) {
next = lpc+1;
}
crm_notice("Upgrading %s-style configuration to %s with %s",
known_schemas[lpc].name, known_schemas[next].name, known_schemas[lpc].transform?known_schemas[lpc].transform:"no-op");
if(known_schemas[lpc].transform == NULL) {
if(validate_with(xml, next, to_logs)) {
crm_debug("Configuration valid for schema: %s", known_schemas[next].name);
lpc = next; *best = next;
rc = cib_ok;
} else {
crm_info("Configuration not valid for schema: %s", known_schemas[next].name);
}
} else {
upgrade = apply_transformation(xml, known_schemas[lpc].transform);
if(upgrade == NULL) {
crm_err("Transformation %s failed", known_schemas[lpc].transform);
rc = cib_transform_failed;
} else if(validate_with(upgrade, next, to_logs)) {
crm_info("Transformation %s successful", known_schemas[lpc].transform);
lpc = next; *best = next;
free_xml(xml);
xml = upgrade;
rc = cib_ok;
} else {
crm_err("Transformation %s did not produce a valid configuration", known_schemas[lpc].transform);
crm_log_xml_info(upgrade, "transform:bad");
free_xml(upgrade);
rc = cib_dtd_validation;
}
}
}
}
if(*best > match) {
crm_notice("Upgraded from %s to %s validation", value?value:"<none>", known_schemas[*best].name);
crm_xml_add(xml, XML_ATTR_VALIDATION, known_schemas[*best].name);
}
*xml_blob = xml;
crm_free(value);
return rc;
}
xmlNode *
getXpathResult(xmlXPathObjectPtr xpathObj, int index)
{
xmlNode *match = NULL;
CRM_CHECK(index >= 0, return NULL);
CRM_CHECK(xpathObj != NULL, return NULL);
if(index >= xpathObj->nodesetval->nodeNr) {
crm_err("Requested index %d of only %d items", index, xpathObj->nodesetval->nodeNr);
return NULL;
}
match = xpathObj->nodesetval->nodeTab[index];
CRM_CHECK(match != NULL, return NULL);
-
+
+ /*
+ * From xpath2.c
+ *
+ * All the elements returned by an XPath query are pointers to
+ * elements from the tree *except* namespace nodes where the XPath
+ * semantic is different from the implementation in libxml2 tree.
+ * As a result when a returned node set is freed when
+ * xmlXPathFreeObject() is called, that routine must check the
+ * element type. But node from the returned set may have been removed
+ * by xmlNodeSetContent() resulting in access to freed data.
+ * This can be exercised by running
+ * valgrind xpath2 test3.xml '//discarded' discarded
+ * There is 2 ways around it:
+ * - make a copy of the pointers to the nodes from the result set
+ * then call xmlXPathFreeObject() and then modify the nodes
+ * or
+ * - remove the reference to the modified nodes from the node set
+ * as they are processed, if they are not namespace nodes.
+ */
+ if (xpathObj->nodesetval->nodeTab[index]->type != XML_NAMESPACE_DECL) {
+ xpathObj->nodesetval->nodeTab[index] = NULL;
+ }
+
if(match->type == XML_DOCUMENT_NODE) {
/* Will happen if section = '/' */
match = match->children;
} else if(match->type != XML_ELEMENT_NODE
&& match->parent
&& match->parent->type == XML_ELEMENT_NODE) {
/* reurning the parent instead */
match = match->parent;
} else if(match->type != XML_ELEMENT_NODE) {
/* We only support searching nodes */
crm_err("We only support %d not %d", XML_ELEMENT_NODE, match->type);
match = NULL;
}
return match;
}
/* the caller needs to check if the result contains a xmlDocPtr or xmlNodePtr */
xmlXPathObjectPtr
xpath_search(xmlNode *xml_top, const char *path)
{
xmlDocPtr doc = NULL;
xmlXPathObjectPtr xpathObj = NULL;
xmlXPathContextPtr xpathCtx = NULL;
const xmlChar *xpathExpr = (const xmlChar *)path;
CRM_CHECK(path != NULL, return NULL);
CRM_CHECK(xml_top != NULL, return NULL);
CRM_CHECK(strlen(path) > 0, return NULL);
doc = getDocPtr(xml_top);
crm_debug_2("Evaluating: %s", path);
xpathCtx = xmlXPathNewContext(doc);
CRM_ASSERT(xpathCtx != NULL);
xpathObj = xmlXPathEvalExpression(xpathExpr, xpathCtx);
xmlXPathFreeContext(xpathCtx);
return xpathObj;
}
gboolean
cli_config_update(xmlNode **xml, int *best_version, gboolean to_logs)
{
gboolean rc = TRUE;
static int min_version = -1;
static int max_version = -1;
const char *value = crm_element_value(*xml, XML_ATTR_VALIDATION);
int version = get_schema_version(value);
if(min_version < 0) {
min_version = get_schema_version(MINIMUM_SCHEMA_VERSION);
}
if(max_version < 0) {
max_version = get_schema_version(LATEST_SCHEMA_VERSION);
}
if(version < min_version) {
xmlNode *converted = NULL;
converted = copy_xml(*xml);
update_validation(&converted, &version, TRUE, to_logs);
value = crm_element_value(converted, XML_ATTR_VALIDATION);
if(version < min_version) {
if(to_logs) {
crm_config_err("Your current configuration could only be upgraded to %s... "
"the minimum requirement is %s.\n", crm_str(value), MINIMUM_SCHEMA_VERSION);
} else {
fprintf(stderr, "Your current configuration could only be upgraded to %s... "
"the minimum requirement is %s.\n", crm_str(value), MINIMUM_SCHEMA_VERSION);
}
free_xml(converted);
converted = NULL;
rc = FALSE;
} else {
free_xml(*xml);
*xml = converted;
if(version < max_version) {
crm_config_warn("Your configuration was internally updated to %s... "
"which is acceptable but not the most recent",
get_schema_name(version));
} else if(to_logs){
crm_info("Your configuration was internally updated to the latest version (%s)",
get_schema_name(version));
}
}
} else if(version > max_version) {
if(to_logs){
crm_config_warn("Configuration validation is currently disabled."
" It is highly encouraged and prevents many common cluster issues.");
} else {
fprintf(stderr, "Configuration validation is currently disabled."
" It is highly encouraged and prevents many common cluster issues.\n");
}
}
if(best_version) {
*best_version = version;
}
return rc;
}
xmlNode *expand_idref(xmlNode *input, xmlNode *top)
{
const char *tag = NULL;
const char *ref = NULL;
xmlNode *result = input;
char *xpath_string = NULL;
if(result == NULL) {
return NULL;
} else if(top == NULL) {
top = input;
}
tag = crm_element_name(result);
ref = crm_element_value(result, XML_ATTR_IDREF);
if(ref != NULL) {
int xpath_max = 512, offset = 0;
crm_malloc0(xpath_string, xpath_max);
offset += snprintf(xpath_string + offset, xpath_max - offset, "//%s[@id='%s']", tag, ref);
result = get_xpath_object(xpath_string, top, LOG_ERR);
if(result == NULL) {
char *nodePath = (char *)xmlGetNodePath(top);
crm_err("No match for %s found in %s: Invalid configuration", xpath_string, crm_str(nodePath));
crm_free(nodePath);
}
}
crm_free(xpath_string);
return result;
}
xmlNode*
get_xpath_object_relative(const char *xpath, xmlNode *xml_obj, int error_level)
{
int len = 0;
xmlNode *result = NULL;
char *xpath_full = NULL;
char *xpath_prefix = NULL;
if(xml_obj == NULL || xpath == NULL) {
return NULL;
}
xpath_prefix = (char *)xmlGetNodePath(xml_obj);
len += strlen(xpath_prefix);
len += strlen(xpath);
xpath_full = crm_strdup(xpath_prefix);
crm_realloc(xpath_full, len+1);
strncat(xpath_full, xpath, len);
result = get_xpath_object(xpath_full, xml_obj, error_level);
crm_free(xpath_prefix);
crm_free(xpath_full);
return result;
}
xmlNode*
get_xpath_object(const char *xpath, xmlNode *xml_obj, int error_level)
{
xmlNode *result = NULL;
xmlXPathObjectPtr xpathObj = NULL;
char *nodePath = NULL;
char *matchNodePath = NULL;
if(xpath == NULL) {
return xml_obj; /* or return NULL? */
}
xpathObj = xpath_search(xml_obj, xpath);
nodePath = (char *)xmlGetNodePath(xml_obj);
if(xpathObj == NULL || xpathObj->nodesetval == NULL || xpathObj->nodesetval->nodeNr < 1) {
do_crm_log(error_level, "No match for %s in %s", xpath, crm_str(nodePath));
crm_log_xml(LOG_DEBUG_2, "Bad Input", xml_obj);
} else if(xpathObj->nodesetval->nodeNr > 1) {
int lpc = 0, max = xpathObj->nodesetval->nodeNr;
do_crm_log(error_level, "Too many matches for %s in %s", xpath, crm_str(nodePath));
for(lpc = 0; lpc < max; lpc++) {
xmlNode *match = getXpathResult(xpathObj, lpc);
CRM_CHECK(match != NULL, continue);
matchNodePath = (char *)xmlGetNodePath(match);
do_crm_log(error_level, "%s[%d] = %s", xpath, lpc, crm_str(matchNodePath));
crm_free(matchNodePath);
}
crm_log_xml(LOG_DEBUG_2, "Bad Input", xml_obj);
} else {
result = getXpathResult(xpathObj, 0);
}
if(xpathObj) {
xmlXPathFreeObject(xpathObj);
}
crm_free(nodePath);
return result;
}
const char *
crm_element_value(xmlNode *data, const char *name)
{
xmlAttr *attr = NULL;
if(data == NULL) {
crm_err("Couldn't find %s in NULL", name?name:"<null>");
return NULL;
} else if(name == NULL) {
crm_err("Couldn't find NULL in %s", crm_element_name(data));
return NULL;
}
attr = xmlHasProp(data, (const xmlChar*)name);
if(attr == NULL || attr->children == NULL) {
return NULL;
}
return (const char*)attr->children->content;
}