diff --git a/lib/crm/common/xml.c b/lib/crm/common/xml.c
index ba72cb8af4..3d20592ec3 100644
--- a/lib/crm/common/xml.c
+++ b/lib/crm/common/xml.c
@@ -1,2621 +1,2626 @@
/* $Id: xml.c,v 1.104 2006/08/17 07:17:16 andrew Exp $ */
/*
* 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 <portability.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 <clplumbing/ipc.h>
#include <clplumbing/cl_log.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <clplumbing/md5.h>
#if HAVE_BZLIB_H
# include <bzlib.h>
#endif
#include <crm/dmalloc_wrapper.h>
#define XML_BUFFER_SIZE 4096
int is_comment_start(const char *input);
int is_comment_end(const char *input);
gboolean drop_comments(const char *input, int *offset);
void dump_array(
int log_level, const char *message, const char **array, int depth);
int print_spaces(char *buffer, int spaces);
int log_data_element(const char *function, const char *prefix, int log_level,
int depth, const crm_data_t *data, gboolean formatted);
int dump_data_element(
int depth, char **buffer, const crm_data_t *data, gboolean formatted);
crm_data_t *parse_xml(const char *input, int *offset);
int get_tag_name(const char *input);
int get_attr_name(const char *input);
int get_attr_value(const char *input);
gboolean can_prune_leaf(crm_data_t *xml_node);
void diff_filter_context(int context, int upper_bound, int lower_bound,
crm_data_t *xml_node, crm_data_t *parent);
int in_upper_context(int depth, int context, crm_data_t *xml_node);
crm_data_t *
find_xml_node(crm_data_t *root, const char * search_path, gboolean must_find)
{
if(must_find || root != NULL) {
crm_validate_data(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_log_xml(LOG_DEBUG_5, "found:", a_child);
crm_log_xml(LOG_DEBUG_6, "in:", root);
crm_validate_data(a_child);
return a_child;
);
if(must_find) {
crm_warn("Could not find %s in %s.", search_path, crm_element_name(root));
} else if(root != NULL) {
crm_debug_3("Could not find %s in %s.", search_path, crm_element_name(root));
} else {
crm_debug_3("Could not find %s in <NULL>.", search_path);
}
return NULL;
}
crm_data_t*
find_xml_node_nested(crm_data_t *root, const char **search_path, int len)
{
int j;
gboolean is_found = TRUE;
crm_data_t *match = NULL;
crm_data_t *lastMatch = root;
crm_validate_data(root);
if(search_path == NULL || search_path[0] == NULL) {
crm_warn("Will never find NULL");
return NULL;
}
dump_array(LOG_DEBUG_5, "Looking for.", search_path, len);
for (j=0; j < len; ++j) {
if (search_path[j] == NULL) {
/* a NULL also means stop searching */
break;
}
match = find_xml_node(lastMatch, search_path[j], FALSE);
if(match == NULL) {
is_found = FALSE;
break;
} else {
lastMatch = match;
}
}
if (is_found) {
crm_debug_5("returning node (%s).",
crm_element_name(lastMatch));
crm_log_xml_debug_5(lastMatch, "found\t%s");
crm_log_xml_debug_5(root, "in \t%s");
crm_validate_data(lastMatch);
return lastMatch;
}
dump_array(LOG_DEBUG_2,
"Could not find the full path to the node you specified.",
search_path, len);
crm_debug_2("Closest point was node (%s) starting from %s.",
crm_element_name(lastMatch), crm_element_name(root));
return NULL;
}
const char *
get_xml_attr_nested(crm_data_t *parent,
const char **node_path, int length,
const char *attr_name, gboolean error)
{
const char *attr_value = NULL;
crm_data_t *attr_parent = NULL;
if(error || parent != NULL) {
crm_validate_data(parent);
}
if(parent == NULL) {
crm_debug_3("Can not find attribute %s in NULL parent",attr_name);
return NULL;
}
if(attr_name == NULL || strlen(attr_name) == 0) {
crm_err("Can not find attribute with no name in %s",
crm_element_name(parent));
return NULL;
}
if(length == 0) {
attr_parent = parent;
} else {
attr_parent = find_xml_node_nested(parent, node_path, length);
if(attr_parent == NULL && error) {
crm_err("No node at the path you specified.");
return NULL;
}
}
attr_value = crm_element_value(attr_parent, attr_name);
if((attr_value == NULL || strlen(attr_value) == 0) && error) {
crm_err("No value present for %s at %s",
attr_name, crm_element_name(attr_parent));
return NULL;
}
return attr_value;
}
crm_data_t*
find_entity(crm_data_t *parent, const char *node_name, const char *id)
{
crm_validate_data(parent);
xml_child_iter_filter(
parent, a_child, node_name,
if(id == NULL || safe_str_eq(id, ID(a_child))) {
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(crm_data_t* target, const crm_data_t *src)
{
int value_len = 0;
char *incr_value = NULL;
char *new_value = NULL;
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,
/* if the value is name followed by "++" we need
* to increment the existing value
*/
new_value = NULL;
incr_value = NULL;
/* do a quick check to decide if its worth
* constructing the various strings and
* performing string comparisions
*/
value_len = strlen(local_prop_value);
if(value_len > 2
&& local_prop_value[0] == local_prop_value[0]
&& local_prop_value[value_len-1] == '+'
&& local_prop_value[value_len-2] == '+') {
int old_int = 0;
const char *old_value = NULL;
incr_value=crm_concat(local_prop_name,"+",'+');
if(safe_str_eq(local_prop_value, incr_value)) {
old_value = crm_element_value(
target, local_prop_name);
old_int = crm_parse_int(old_value, "0");
new_value = crm_itoa(old_int + 1);
local_prop_value = new_value;
}
}
crm_xml_add(target, local_prop_name, local_prop_value);
crm_free(incr_value);
crm_free(new_value);
);
crm_validate_data(target);
}
return;
}
crm_data_t*
add_node_copy(crm_data_t *parent, const crm_data_t *src_node)
{
const char *name = NULL;
crm_data_t *child = NULL;
CRM_CHECK(src_node != NULL, return NULL);
crm_validate_data(src_node);
name = crm_element_name(src_node);
CRM_CHECK(name != NULL, return NULL);
child = create_xml_node(parent, name);
copy_in_properties(child, src_node);
xml_child_iter(src_node, src_child,
add_node_copy(child, src_child);
);
crm_set_element_parent(child, parent);
return child;
}
const char *
crm_xml_add(crm_data_t* node, const char *name, const char *value)
{
const char *parent_name = NULL;
if(node != NULL) {
parent_name = crm_element_name(node);
}
crm_debug_5("[%s] Setting %s to %s", crm_str(parent_name), name, value);
if (name == NULL || strlen(name) <= 0) {
} else if(node == NULL) {
} else if(parent_name == NULL && strcasecmp(name, F_XML_TAGNAME) != 0) {
} else if (value == NULL || strlen(value) <= 0) {
xml_remove_prop(node, name);
return NULL;
} else {
const char *new_value = NULL;
crm_validate_data(node);
ha_msg_mod(node, name, value);
new_value = crm_element_value(node, name);
return new_value;
}
return NULL;
}
const char *
crm_xml_add_int(crm_data_t* node, const char *name, int value)
{
const char *parent_name = NULL;
if(node != NULL) {
parent_name = crm_element_name(node);
}
crm_debug_5("[%s] Setting %s to %d", crm_str(parent_name), name, value);
if (name == NULL || strlen(name) <= 0) {
} else if(node == NULL) {
} else if(parent_name == NULL && strcasecmp(name, F_XML_TAGNAME) != 0) {
} else {
crm_validate_data(node);
ha_msg_mod_int(node, name, value);
return crm_element_value(node, name);
}
return NULL;
}
crm_data_t*
create_xml_node(crm_data_t *parent, const char *name)
{
const char *local_name = NULL;
const char *parent_name = NULL;
crm_data_t *ret_value = NULL;
if (name == NULL || strlen(name) < 1) {
ret_value = NULL;
} else {
local_name = name;
ret_value = ha_msg_new(3);
CRM_CHECK(ret_value != NULL, return NULL);
crm_xml_add(ret_value, F_XML_TAGNAME, name);
crm_set_element_parent(ret_value, parent);
crm_validate_data(ret_value);
if(parent) {
crm_validate_data(parent);
parent_name = crm_element_name(parent);
crm_debug_5("Attaching %s to parent %s",
local_name, parent_name);
CRM_CHECK(HA_OK == ha_msg_addstruct(
parent, name, ret_value), return NULL);
crm_msg_del(ret_value);
crm_validate_data(parent);
ret_value = parent->values[parent->nfields-1];
}
}
crm_debug_5("Created node [%s [%s]]",
crm_str(parent_name), crm_str(local_name));
return ret_value;
}
void
free_xml_from_parent(crm_data_t *parent, crm_data_t *a_node)
{
CRM_CHECK(parent != NULL, return);
CRM_CHECK(a_node != NULL, return);
crm_validate_data(parent);
cl_msg_remove_value(parent, a_node);
crm_validate_data(parent);
}
void
free_xml_fn(crm_data_t *a_node)
{
if(a_node == NULL) {
; /* nothing to do */
} else {
int has_parent = 0;
crm_validate_data(a_node);
ha_msg_value_int(a_node, F_XML_PARENT, &has_parent);
/* there is no way in hell we should be deleting anything
* with a parent and without the parent knowning
*/
CRM_CHECK(has_parent == 0, return);
crm_validate_data(a_node);
ha_msg_del(a_node);
}
return;
}
void
add_xml_tstamp(crm_data_t *a_node)
{
char *since_epoch = NULL;
time_t a_time = time(NULL);
crm_validate_data(a_node);
if(a_time == (time_t)-1) {
cl_perror("set_node_tstamp(): Invalid time returned");
return;
}
crm_malloc0(since_epoch, 128);
if(since_epoch != NULL) {
sprintf(since_epoch, "%ld", (unsigned long)a_time);
ha_msg_mod(a_node, XML_ATTR_TSTAMP, since_epoch);
crm_validate_data(a_node);
crm_free(since_epoch);
}
}
crm_data_t*
copy_xml(const crm_data_t *src_node)
{
return add_node_copy(NULL, src_node);
}
crm_data_t*
string2xml(const char *input)
{
crm_data_t *output = parse_xml(input, NULL);
if(output != NULL) {
crm_update_parents(output);
crm_validate_data(output);
}
return output;
}
crm_data_t *
stdin2xml(void)
{
size_t data_length = 0;
size_t read_chars = 0;
char *xml_buffer = NULL;
crm_data_t *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);
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;
}
crm_data_t*
file2xml(FILE *input, gboolean compressed)
{
char *buffer = NULL;
gboolean work_done = FALSE;
crm_data_t *new_obj = NULL;
size_t length = 0, read_len = 0;
if(input == NULL) {
crm_err("No file to read");
return NULL;
}
if(compressed) {
#if HAVE_BZLIB_H
int rc = 0;
BZFILE *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);
}
BZ2_bzReadClose (&rc, bz_file);
if(buffer == NULL) {
return NULL;
}
work_done = TRUE;
#else
crm_err("Cannot read compressed files:"
" bzlib was not available at compile time");
#endif
}
if(work_done == FALSE) {
int start = 0;
start = ftell(input);
fseek(input, 0L, SEEK_END);
length = ftell(input);
fseek(input, 0L, start);
CRM_ASSERT(start == ftell(input));
crm_debug_3("Reading %ld bytes from file", (long)length);
crm_malloc0(buffer, (length+1));
read_len = fread(buffer, 1, length, input);
}
/* see how big the file is */
if(read_len != length) {
crm_err("Calculated and read bytes differ: %ld vs. %ld",
(long)length, (long)read_len);
} else if(length > 0) {
new_obj = string2xml(buffer);
} else {
crm_warn("File contained no XML");
}
crm_free(buffer);
return new_obj;
}
void
dump_array(int log_level, const char *message, const char **array, int depth)
{
int j;
if(message != NULL) {
do_crm_log(log_level, "%s", message);
}
do_crm_log(log_level, "Contents of the array:");
if(array == NULL || array[0] == NULL || depth == 0) {
do_crm_log(log_level, "\t<empty>");
return;
}
for (j=0; j < depth && array[j] != NULL; j++) {
if (array[j] == NULL) { break; }
do_crm_log(log_level, "\t--> (%s).", array[j]);
}
}
int
write_xml_file(crm_data_t *xml_node, const char *filename, gboolean compress)
{
int res = 0;
time_t now;
char *buffer = NULL;
char *now_str = NULL;
gboolean is_done = FALSE;
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;
}
crm_validate_data(xml_node);
crm_log_xml_debug_4(xml_node, "Writing out");
crm_validate_data(xml_node);
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, return -1);
/* establish the file with correct permissions */
file_output_strm = fopen(filename, "w");
fclose(file_output_strm);
chmod(filename, cib_mode);
/* now write it */
file_output_strm = fopen(filename, "w");
if(file_output_strm == NULL) {
crm_free(buffer);
cl_perror("Cannot write to %s", filename);
return -1;
}
if(compress) {
#if HAVE_BZLIB_H
int rc = BZ_OK;
BZFILE *bz_file = NULL;
unsigned int in = 0, out = 0;
is_done = TRUE;
bz_file = BZ2_bzWriteOpen(&rc, file_output_strm, 5,0,0);
if(rc != BZ_OK) {
is_done = FALSE;
crm_err("bzWriteOpen failed: %d", rc);
}
if(is_done) {
BZ2_bzWrite(&rc,bz_file,buffer,strlen(buffer));
if(rc != BZ_OK) {
crm_err("bzWrite() failed: %d", rc);
is_done = FALSE;
}
}
if(is_done) {
BZ2_bzWriteClose(&rc, bz_file, 0, &in, &out);
if(rc != BZ_OK) {
crm_err("bzWriteClose() failed: %d",rc);
is_done = FALSE;
} else {
- crm_debug("%s: In: %d, out: %d",
- filename, in, out);
+ 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(is_done == FALSE) {
res = fprintf(file_output_strm, "%s", buffer);
if(res < 0) {
cl_perror("Cannot write output to %s",filename);
}
fflush(file_output_strm);
}
fclose(file_output_strm);
crm_free(buffer);
crm_debug_3("Saved %d bytes to the Cib as XML", res);
return res;
}
void
print_xml_formatted(int log_level, const char *function,
const crm_data_t *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;
}
crm_data_t *
get_message_xml(HA_Message *msg, const char *field)
{
crm_data_t *xml_node = NULL;
crm_data_t *tmp_node = NULL;
crm_validate_data(msg);
tmp_node = cl_get_struct(msg, field);
if(tmp_node != NULL) {
xml_node = copy_xml(tmp_node);
}
return xml_node;
}
gboolean
add_message_xml(HA_Message *msg, const char *field, const crm_data_t *xml)
{
crm_validate_data(xml);
crm_validate_data(msg);
CRM_CHECK(field != NULL, return FALSE);
ha_msg_addstruct_compress(msg, field, xml);
crm_update_parents(msg);
return TRUE;
}
char *
dump_xml_formatted(const crm_data_t *an_xml_node)
{
char *buffer = NULL;
char *mutable_ptr = NULL;
if(an_xml_node == NULL) {
return NULL;
}
crm_malloc0(buffer, 3*get_stringlen(an_xml_node));
mutable_ptr = buffer;
crm_validate_data(an_xml_node);
CRM_CHECK(dump_data_element(
0, &mutable_ptr, an_xml_node, TRUE) >= 0,
crm_crit("Could not dump the whole message"));
crm_debug_4("Dumped: %s", buffer);
return buffer;
}
char *
dump_xml_unformatted(const crm_data_t *an_xml_node)
{
char *buffer = NULL;
char *mutable_ptr = NULL;
crm_malloc0(buffer, 2*get_stringlen(an_xml_node));
mutable_ptr = buffer;
crm_validate_data(an_xml_node);
CRM_CHECK(dump_data_element(
0, &mutable_ptr, an_xml_node, TRUE) >= 0,
crm_crit("Could not dump the whole message"));
crm_debug_4("Dumped: %s", buffer);
return buffer;
}
#define update_buffer_head(buffer, len) if(len < 0) { \
(*buffer) = EOS; return -1; \
} else { \
buffer += len; \
}
int
print_spaces(char *buffer, int depth)
{
int lpc = 0;
int spaces = 2*depth;
/* <= so that we always print 1 space - prevents problems with syslog */
for(lpc = 0; lpc <= spaces; lpc++) {
if(sprintf(buffer, "%c", ' ') < 1) {
return -1;
}
buffer += 1;
}
return lpc;
}
int
log_data_element(
const char *function, const char *prefix, int log_level, int depth,
const crm_data_t *data, gboolean formatted)
{
int printed = 0;
int child_result = 0;
int has_children = 0;
char print_buffer[1000];
char *buffer = print_buffer;
const char *name = crm_element_name(data);
const char *hidden = NULL;
crm_debug_5("Dumping %s...", name);
crm_validate_data(data);
if(data == NULL) {
crm_warn("No data to dump as XML");
return 0;
} else if(name == NULL && depth == 0) {
xml_child_iter(
data, a_child,
child_result = log_data_element(
function, prefix, log_level, depth, a_child, formatted);
if(child_result < 0) {
return child_result;
}
);
return 0;
} else if(name == NULL) {
crm_err("Cannot dump NULL element at depth %d", depth);
return -1;
}
if(formatted) {
printed = print_spaces(buffer, depth);
update_buffer_head(buffer, printed);
}
printed = sprintf(buffer, "<%s", name);
update_buffer_head(buffer, printed);
hidden = crm_element_value(data, "hidden");
xml_prop_iter(
data, prop_name, prop_value,
if(prop_name == NULL) {
CRM_ASSERT(prop_name != NULL);
} else if(safe_str_eq(F_XML_TAGNAME, prop_name)) {
continue;
} else if(safe_str_eq(F_XML_PARENT, prop_name)) {
continue;
} else if(hidden != NULL
&& strlen(prop_name) > 0
&& strstr(hidden, prop_name) != NULL) {
prop_value = "*****";
}
crm_debug_5("Dumping <%s %s=\"%s\"...",
name, prop_name, prop_value);
printed = sprintf(buffer, " %s=\"%s\"", prop_name, prop_value);
update_buffer_head(buffer, printed);
);
xml_child_iter(
data, child,
if(child != NULL) {
has_children++;
break;
}
);
printed = sprintf(buffer, "%s>", has_children==0?"/":"");
update_buffer_head(buffer, printed);
do_crm_log(log_level, "%s: %s%s",
function, prefix?prefix:"", print_buffer);
buffer = print_buffer;
if(has_children == 0) {
return 0;
}
xml_child_iter(
data, a_child,
child_result = log_data_element(
function, prefix, log_level, depth+1, a_child, formatted);
if(child_result < 0) { return -1; }
);
if(formatted) {
printed = print_spaces(buffer, depth);
update_buffer_head(buffer, printed);
}
do_crm_log(log_level, "%s: %s%s</%s>",
function, prefix?prefix:"", print_buffer, name);
crm_debug_5("Dumped %s...", name);
return has_children;
}
int
dump_data_element(
int depth, char **buffer, const crm_data_t *data, gboolean formatted)
{
int printed = 0;
int child_result = 0;
int has_children = 0;
const char *name = crm_element_name(data);
crm_debug_5("Dumping %s...", name);
crm_validate_data(data);
if(buffer == NULL || *buffer == NULL) {
crm_err("No buffer supplied to dump XML into");
return -1;
} else if(data == NULL) {
crm_warn("No data to dump as XML");
(*buffer)[0] = EOS;
return 0;
} else if(name == NULL && depth == 0) {
xml_child_iter(
data, a_child,
child_result = dump_data_element(
depth, buffer, a_child, formatted);
if(child_result < 0) {
return child_result;
}
);
return 0;
} else if(name == NULL) {
crm_err("Cannot dump NULL element at depth %d", depth);
return -1;
}
if(formatted) {
printed = print_spaces(*buffer, depth);
update_buffer_head(*buffer, printed);
}
printed = sprintf(*buffer, "<%s", name);
update_buffer_head(*buffer, printed);
xml_prop_iter(data, prop_name, prop_value,
if(safe_str_eq(F_XML_TAGNAME, prop_name)) {
continue;
} else if(safe_str_eq(F_XML_PARENT, prop_name)) {
continue;
}
crm_debug_5("Dumping <%s %s=\"%s\"...",
name, prop_name, prop_value);
printed = sprintf(*buffer, " %s=\"%s\"", prop_name, prop_value);
update_buffer_head(*buffer, printed);
);
xml_child_iter(
data, child,
if(child != NULL) {
has_children++;
break;
}
);
printed = sprintf(*buffer, "%s>%s",
has_children==0?"/":"", formatted?"\n":"");
update_buffer_head(*buffer, printed);
if(has_children == 0) {
return 0;
}
xml_child_iter(
data, child,
child_result = dump_data_element(
depth+1, buffer, child, formatted);
if(child_result < 0) { return -1; }
);
if(formatted) {
printed = print_spaces(*buffer, depth);
update_buffer_head(*buffer, printed);
}
printed = sprintf(*buffer, "</%s>%s", name, formatted?"\n":"");
update_buffer_head(*buffer, printed);
crm_debug_5("Dumped %s...", name);
return has_children;
}
gboolean
xml_has_children(crm_data_t *xml_root)
{
crm_validate_data(xml_root);
xml_child_iter(
xml_root, a_child,
return TRUE;
);
return FALSE;
}
void
xml_validate(const crm_data_t *xml_root)
{
int lpc = 0;
CRM_ASSERT(xml_root != NULL);
CRM_ASSERT(cl_is_allocated(xml_root) == 1);
CRM_ASSERT(xml_root->nfields < 500);
for (lpc = 0; lpc < xml_root->nfields; lpc++) {
void *child = xml_root->values[lpc];
CRM_ASSERT(cl_is_allocated(xml_root->names[lpc]) == 1);
if(child == NULL) {
} else if(xml_root->types[lpc] == FT_STRUCT
|| xml_root->types[lpc] == FT_UNCOMPRESS) {
crm_validate_data(child);
} else if(xml_root->types[lpc] == FT_STRING) {
CRM_ASSERT(cl_is_allocated(child) == 1);
/* } else { */
/* CRM_CHECK(FALSE); */
}
}
}
void
crm_set_element_parent(crm_data_t *data, crm_data_t *parent)
{
crm_validate_data(data);
if(parent != NULL) {
ha_msg_mod_int(data, F_XML_PARENT, 1);
} else {
ha_msg_mod_int(data, F_XML_PARENT, 0);
}
}
const char *
crm_element_value(const crm_data_t *data, const char *name)
{
const char *value = NULL;
crm_validate_data(data);
value = cl_get_string(data, name);
#if XML_PARANOIA_CHECKS
CRM_CHECK(value == NULL || cl_is_allocated(value) == 1, return NULL);
#endif
return value;
}
char *
crm_element_value_copy(const crm_data_t *data, const char *name)
{
const char *value = NULL;
char *value_copy = NULL;
crm_validate_data(data);
value = cl_get_string(data, name);
if(value != NULL) {
#if XML_PARANOIA_CHECKS
CRM_CHECK(cl_is_allocated(value) == 1, return NULL);
#endif
value_copy = crm_strdup(value);
}
return value_copy;
}
const char *
crm_element_name(const crm_data_t *data)
{
#if CRM_DEV_BUILD
crm_validate_data(data);
#endif
return cl_get_string(data, F_XML_TAGNAME);
}
void
xml_remove_prop(crm_data_t *obj, const char *name)
{
if(crm_element_value(obj, name) != NULL) {
cl_msg_remove(obj, name);
}
}
void
crm_update_parents(crm_data_t *xml_root)
{
crm_validate_data(xml_root);
xml_child_iter(
xml_root, a_child,
crm_set_element_parent(a_child, xml_root);
crm_update_parents(a_child);
);
}
int
get_tag_name(const char *input)
{
int lpc = 0;
char ch = 0;
const char *error = NULL;
gboolean do_special = FALSE;
for(lpc = 0; error == NULL && lpc < (ssize_t)strlen(input); lpc++) {
ch = input[lpc];
crm_debug_5("Processing char %c [%d]", ch, lpc);
switch(ch) {
case 0:
error = "unexpected EOS";
break;
case '?':
if(lpc == 0) {
/* weird xml tag that we dont care about */
do_special = TRUE;
} else {
return lpc;
}
break;
case '/':
case '>':
case '\t':
case '\n':
case ' ':
if(!do_special) {
return lpc;
}
break;
default:
if(do_special) {
} else if('a' <= ch && ch <= 'z') {
} else if('A' <= ch && ch <= 'Z') {
} else if(ch == '_') {
} else if(ch == '-') {
} else {
error = "bad character, not in [a-zA-Z_-]";
}
break;
}
}
crm_err("Error parsing token near %.15s: %s", input, crm_str(error));
return -1;
}
int
get_attr_name(const char *input)
{
int lpc = 0;
char ch = 0;
const char *error = NULL;
for(lpc = 0; error == NULL && lpc < (ssize_t)strlen(input); lpc++) {
ch = input[lpc];
crm_debug_5("Processing char %c[%d]", ch, lpc);
switch(ch) {
case 0:
error = "unexpected EOS";
break;
case '\t':
case '\n':
case ' ':
error = "unexpected whitespace";
break;
case '=':
return lpc;
default:
if('a' <= ch && ch <= 'z') {
} else if('A' <= ch && ch <= 'Z') {
} else if(isdigit((int) ch)) {
} else if(ch == '_') {
} else if(ch == '-') {
} else {
error = "bad character, not in [a-zA-Z0-9_-]";
}
break;
}
}
crm_err("Error parsing token near %.15s: %s", input, crm_str(error));
return -1;
}
int
get_attr_value(const char *input)
{
int lpc = 0;
char ch = 0;
const char *error = NULL;
for(lpc = 0; error == NULL && lpc < (ssize_t)strlen(input); lpc++) {
ch = input[lpc];
crm_debug_5("Processing char %c [%d]", ch, lpc);
switch(ch) {
case 0:
error = "unexpected EOS";
break;
case '\\':
if(input[lpc+1] == '"') {
/* skip over the next char */
lpc++;
break;
}
/*fall through*/
case '"':
return lpc;
default:
break;
}
}
crm_err("Error parsing token near %.15s: %s", input, crm_str(error));
return -1;
}
int
is_comment_start(const char *input)
{
CRM_CHECK(input != NULL, return 0);
if(strlen(input) > 4
&& input[0] == '<'
&& input[1] == '!'
&& input[2] == '-'
&& input[3] == '-') {
crm_debug_6("Found comment start: <!--");
return 4;
} else if(strlen(input) > 2
&& input[0] == '<'
&& input[1] == '!') {
crm_debug_6("Found comment start: <!");
return 2;
} else if(strlen(input) > 2
&& input[0] == '<'
&& input[1] == '?') {
crm_debug_6("Found comment start: <?");
return 2;
}
if(strlen(input) > 3) {
crm_debug_6("Not comment start: %c%c%c%c", input[0], input[1], input[2], input[3]);
} else {
crm_debug_6("Not comment start");
}
return 0;
}
int
is_comment_end(const char *input)
{
CRM_CHECK(input != NULL, return 0);
if(strlen(input) > 2
&& input[0] == '-'
&& input[1] == '-'
&& input[2] == '>') {
crm_debug_6("Found comment end: -->");
return 3;
} else if(strlen(input) > 1
&& input[0] == '?'
&& input[1] == '>') {
crm_debug_6("Found comment end: ?>");
return 2;
}
if(strlen(input) > 2) {
crm_debug_6("Not comment end: %c%c%c", input[0], input[1], input[2]);
} else {
crm_debug_6("Not comment end");
}
return 0;
}
static gboolean
drop_whitespace(const char *input, int *offset)
{
char ch = 0;
int len = 0, lpc = 0;
gboolean more = TRUE;
const char *our_input = input;
if(input == NULL) {
return FALSE;
}
if(offset != NULL) {
our_input = input + (*offset);
}
len = strlen(our_input);
while(lpc < len && more) {
ch = our_input[lpc];
crm_debug_6("Processing char %c[%d]", ch, lpc);
if(isspace(ch)) {
lpc++;
} else {
more = FALSE;
}
}
crm_debug_4("Finished processing whitespace");
if(offset != NULL) {
(*offset) += lpc;
}
if(lpc > 0) {
crm_debug_5("Skipped %d whitespace chars", lpc);
return TRUE;
}
return FALSE;
}
gboolean
drop_comments(const char *input, int *offset)
{
gboolean more = TRUE;
gboolean in_directive = FALSE;
int in_comment = FALSE;
const char *our_input = input;
int len = 0, lpc = 0;
int tag_len = 0;
char ch = 0;
if(input == NULL) {
return FALSE;
}
if(offset != NULL) {
our_input = input + (*offset);
}
len = strlen(our_input);
while(lpc < len && more) {
ch = our_input[lpc];
crm_debug_6("Processing char %c[%d]", ch, lpc);
switch(ch) {
case 0:
if(in_comment == FALSE) {
more = FALSE;
} else {
crm_err("unexpected EOS");
crm_warn("Parsing error at or before: %s", our_input);
}
break;
case '<':
tag_len = is_comment_start(our_input + lpc);
if(tag_len > 0) {
if(in_comment) {
crm_err("Nested XML comments are not supported!");
crm_warn("Parsing error at or before: %s", our_input);
crm_warn("Netsed comment found at: %s", our_input + lpc + tag_len);
}
in_comment = TRUE;
lpc+=tag_len;
if(tag_len == 2) {
#if 1
if(our_input[lpc-1] == '!') {
in_directive = TRUE;
}
#else
tag_len = get_tag_name(our_input + lpc);
crm_debug_2("Tag length: %d", len);
if(strncmp("DOCTYPE", our_input+lpc, tag_len) == 0) {
in_directive = TRUE;
}
#endif
}
} else if(in_comment == FALSE){
more = FALSE;
} else {
lpc++;
crm_debug_6("Skipping comment char %c", our_input[lpc]);
}
break;
case '>':
lpc++;
if(in_directive) {
in_directive = FALSE;
in_comment = FALSE;
}
break;
case '-':
case '?':
tag_len = is_comment_end(our_input + lpc);
if(tag_len > 0) {
lpc+=tag_len;
in_comment = FALSE;
} else {
lpc++;
crm_debug_6("Skipping comment char %c", our_input[lpc]);
}
break;
case ' ':
case '\t':
case '\n':
case '\r':
lpc++;
crm_debug_6("Skipping whitespace char %d", our_input[lpc]);
break;
default:
lpc++;
crm_debug_6("Skipping comment char %c", our_input[lpc]);
break;
}
}
crm_debug_4("Finished processing comments");
if(offset != NULL) {
(*offset) += lpc;
}
if(lpc > 0) {
crm_debug_5("Skipped %d comment chars", lpc);
return TRUE;
}
return FALSE;
}
crm_data_t*
parse_xml(const char *input, int *offset)
{
int len = 0, lpc = 0;
char ch = 0;
char *tag_name = NULL;
char *attr_name = NULL;
char *attr_value = NULL;
gboolean more = TRUE;
gboolean were_comments = TRUE;
const char *error = NULL;
const char *our_input = input;
crm_data_t *new_obj = NULL;
if(input == NULL) {
return NULL;
}
if(offset != NULL) {
our_input = input + (*offset);
}
len = strlen(our_input);
while(lpc < len && were_comments) {
were_comments = drop_comments(our_input, &lpc);
}
CRM_CHECK(our_input[lpc] == '<', return NULL);
lpc++;
len = get_tag_name(our_input + lpc);
crm_debug_5("Tag length: %d", len);
if(len < 0) {
return NULL;
}
crm_malloc0(tag_name, len+1);
strncpy(tag_name, our_input + lpc, len+1);
tag_name[len] = EOS;
crm_debug_4("Processing tag %s", tag_name);
new_obj = ha_msg_new(1);
ha_msg_add(new_obj, F_XML_TAGNAME, tag_name);
lpc += len;
for(; more && error == NULL && lpc < (ssize_t)strlen(input); lpc++) {
ch = our_input[lpc];
crm_debug_5("Processing char %c[%d]", ch, lpc);
switch(ch) {
case 0:
error = "unexpected EOS";
break;
case '/':
if(our_input[lpc+1] == '>') {
more = FALSE;
}
break;
case '<':
if(our_input[lpc+1] != '/') {
crm_data_t *child = NULL;
gboolean any_comments = FALSE;
do {
were_comments = drop_comments(our_input, &lpc);
any_comments = any_comments || were_comments;
} while(lpc < len && were_comments);
if(any_comments) {
lpc--;
break;
}
crm_debug_4("Start parsing child...");
child = parse_xml(our_input, &lpc);
if(child == NULL) {
error = "error parsing child";
} else {
ha_msg_addstruct_compress(
new_obj, crm_element_name(child), child);
crm_debug_4("Finished parsing child: %s",
crm_element_name(child));
ha_msg_del(child);
if(our_input[lpc] == '<') {
/* lpc is about to get incrimented
* make sure we process the '<' that
* we're currently looking at
*/
lpc--;
}
/* lpc++; /\* > *\/ */
}
} else {
lpc += 2; /* </ */
len = get_tag_name(our_input+lpc);
if(len < 0) {
error = "couldnt find tag";
} else if(strncmp(our_input+lpc, tag_name, len) == 0) {
more = FALSE;
lpc += len;
/* lpc++; /\* > *\/ */
if(our_input[lpc] != '>') {
error = "clase tag cannot contain attrs";
}
crm_debug_4("Finished parsing ourselves: %s",
crm_element_name(new_obj));
} else {
error = "Mismatching close tag";
crm_err("Expected: %s", tag_name);
}
}
break;
case '=':
lpc++; /* = */
/*fall through*/
case '"':
lpc++; /* " */
len = get_attr_value(our_input+lpc);
if(len < 0) {
error = "couldnt find attr_value";
} else {
crm_malloc0(attr_value, len+1);
strncpy(attr_value, our_input+lpc, len+1);
attr_value[len] = EOS;
lpc += len;
/* lpc++; /\* " *\/ */
crm_debug_4("creating nvpair: <%s %s=\"%s\"...",
tag_name,
crm_str(attr_name),
crm_str(attr_value));
ha_msg_add(new_obj, attr_name, attr_value);
crm_free(attr_name);
crm_free(attr_value);
}
break;
case '>':
case ' ':
case '\t':
case '\n':
case '\r':
break;
default:
len = get_attr_name(our_input+lpc);
if(len < 0) {
error = "couldnt find attr_name";
} else {
crm_malloc0(attr_name, len+1);
strncpy(attr_name, our_input+lpc, len+1);
attr_name[len] = EOS;
lpc += len;
crm_debug_4("found attr name: %s", attr_name);
lpc--; /* make sure the '=' is seen next time around */
}
break;
}
}
if(error) {
crm_err("Error parsing token: %s", error);
crm_err("Error at or before: %s", our_input+lpc-3);
return NULL;
}
if(offset == NULL) {
lpc++;
drop_comments(our_input, &lpc);
drop_whitespace(our_input, &lpc);
if(lpc < (ssize_t)strlen(input)) {
crm_err("Ignoring trailing characters in XML input.");
crm_err("Parsed %d characters of a possible %d. Trailing text was: ...\'%20s\'",
lpc, (int)strlen(input), input+lpc);
}
}
crm_debug_4("Finished processing %s tag", tag_name);
crm_free(tag_name);
if(offset != NULL) {
(*offset) += lpc;
}
return new_obj;
}
void
log_xml_diff(unsigned int log_level, crm_data_t *diff, const char *function)
{
crm_data_t *added = find_xml_node(diff, "diff-added", FALSE);
crm_data_t *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(crm_data_t *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(crm_data_t *old, crm_data_t *diff, crm_data_t **new)
{
gboolean result = TRUE;
crm_data_t *added = find_xml_node(diff, "diff-added", FALSE);
crm_data_t *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) {
int lpc = 0;
crm_data_t *intermediate = NULL;
crm_data_t *diff_of_diff = NULL;
crm_data_t *calc_added = NULL;
crm_data_t *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_notice("Diff application failed!");
crm_log_xml_debug(old, "diff:old");
crm_log_xml_debug(*new, "diff:new");
log_xml_diff(LOG_DEBUG, diff_of_diff, "diff:diff_of_diff");
log_xml_diff(LOG_INFO, intermediate, "diff:actual_diff");
result = FALSE;
}
free_xml(diff_of_diff);
free_xml(intermediate);
diff_of_diff = NULL;
intermediate = NULL;
}
if(result == FALSE) {
log_xml_diff(LOG_INFO, diff, "diff:input_diff");
log_data_element("diff:input", NULL, LOG_DEBUG_2, 0, old, TRUE);
/* CRM_CHECK(diff_of_diff != NULL); */
result = FALSE;
} else {
purge_diff_markers(*new);
}
return result;
}
crm_data_t *
diff_xml_object(crm_data_t *old, crm_data_t *new, gboolean suppress)
{
crm_data_t *diff = NULL;
crm_data_t *tmp1 = NULL;
crm_data_t *added = NULL;
crm_data_t *removed = NULL;
tmp1 = subtract_xml_object(old, new, "removed:top");
if(tmp1 != NULL) {
if(suppress && can_prune_leaf(tmp1)) {
ha_msg_del(tmp1);
tmp1 = NULL;
} else {
diff = create_xml_node(NULL, "diff");
removed = create_xml_node(diff, "diff-removed");
added = create_xml_node(diff, "diff-added");
add_node_copy(removed, tmp1);
}
free_xml(tmp1);
}
tmp1 = subtract_xml_object(new, old, "added:top");
if(tmp1 != NULL) {
if(suppress && can_prune_leaf(tmp1)) {
ha_msg_del(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_copy(added, tmp1);
free_xml(tmp1);
}
return diff;
}
gboolean
can_prune_leaf(crm_data_t *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)) {
cl_msg_remove_value(xml_node, child);
__counter--;
} else {
can_prune = FALSE;
}
);
return can_prune;
}
void
diff_filter_context(int context, int upper_bound, int lower_bound,
crm_data_t *xml_node, crm_data_t *parent)
{
crm_data_t *us = NULL;
crm_data_t *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, crm_data_t *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;
}
crm_data_t *
subtract_xml_object(crm_data_t *left, crm_data_t *right, const char *marker)
{
gboolean skip = FALSE;
gboolean differences = FALSE;
crm_data_t *diff = NULL;
crm_data_t *child_diff = NULL;
crm_data_t *right_child = NULL;
const char *right_val = NULL;
const char *name = NULL;
const char *value = NULL;
int lpc = 0;
const char *filter[] = {
XML_ATTR_ORIGIN,
XML_DIFF_MARKER,
XML_CIB_ATTR_WRITTEN,
};
crm_log_xml(LOG_DEBUG_5, "left:", left);
crm_log_xml(LOG_DEBUG_5, "right:", right);
if(left == NULL) {
return NULL;
} else if(right == NULL) {
crm_data_t *deleted = NULL;
crm_debug_5("Processing <%s id=%s> (complete copy)",
crm_element_name(left), ID(left));
deleted = copy_xml(left);
crm_xml_add(deleted, XML_DIFF_MARKER, marker);
return deleted;
}
name = crm_element_name(left);
/* sanity checks */
CRM_CHECK(name != NULL, return NULL);
CRM_CHECK(safe_str_eq(crm_element_name(left),
crm_element_name(right)), return NULL);
CRM_CHECK(safe_str_eq(ID(left), ID(right)), return NULL);
diff = create_xml_node(NULL, name);
/* changes to name/value pairs */
crm_debug_5("Processing <%s id=%s>", crm_str(name), ID(left));
xml_prop_iter(left, prop_name, left_value,
if(safe_str_eq(prop_name, XML_ATTR_ID)) {
continue;
}
skip = FALSE;
for(lpc = 0; skip == FALSE && lpc < DIMOF(filter); lpc++){
if(safe_str_eq(prop_name, filter[lpc])) {
skip = TRUE;
}
}
if(skip) { continue; }
right_val = crm_element_value(right, prop_name);
if(right_val == NULL) {
differences = TRUE;
crm_xml_add(diff, prop_name, left_value);
crm_debug_6("\t%s: %s", crm_str(prop_name),
crm_str(left_value));
} else if(safe_str_eq(left_value, right_val)) {
crm_debug_5("\t%s: %s (removed)",
crm_str(prop_name),
crm_str(left_value));
} else {
differences = TRUE;
crm_xml_add(diff, prop_name, left_value);
crm_debug_5("\t%s: %s->%s",
crm_str(prop_name),
crm_str(left_value),
right_val);
}
);
/* changes to child objects */
crm_debug_3("Processing children of <%s id=%s>",crm_str(name),ID(left));
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_copy(diff, child_diff);
free_xml(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("Found the root of the deletion: %s", name);
crm_log_xml_debug(right_child, "deletion");
differences = TRUE;
break;
}
);
}
if(differences == FALSE) {
free_xml(diff);
crm_debug_5("\tNo changes to <%s id=%s>", crm_str(name), ID(left));
return NULL;
}
crm_xml_add(diff, XML_ATTR_ID, ID(left));
return diff;
}
int
add_xml_object(crm_data_t *parent, crm_data_t *target, const crm_data_t *update)
{
const char *object_id = NULL;
const char *object_name = NULL;
crm_log_xml(LOG_DEBUG_5, "update:", update);
crm_log_xml(LOG_DEBUG_5, "target:", target);
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);
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:"");
}
copy_in_properties(target, update);
xml_child_iter(
update, a_child,
crm_debug_4("Updating child <%s id=%s>",
crm_element_name(a_child), ID(a_child));
add_xml_object(target, NULL, a_child);
);
crm_debug_3("Finished with <%s id=%s>",
crm_str(object_name), crm_str(object_id));
return 0;
}
gboolean
update_xml_child(crm_data_t *child, crm_data_t *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) {
crm_log_xml_debug_2(child, "Update match found...");
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(crm_data_t **children, crm_data_t *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(crm_data_t *parent, crm_data_t *child, crm_data_t *update, gboolean delete_only)
{
gboolean can_delete = FALSE;
const char *right_val = NULL;
CRM_CHECK(child != NULL, return FALSE);
CRM_CHECK(update != NULL, return FALSE);
if(safe_str_eq(ID(child), ID(update))) {
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) {
cl_msg_remove_value(parent, child);
} else {
/* preserve the order */
cl_msg_replace_value(parent, child, update,
sizeof(struct ha_msg), FT_STRUCT);
}
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;
crm_data_t *xml_node = user_data;
crm_data_t *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
hash2field(gpointer key, gpointer value, gpointer user_data)
{
const char *name = key;
const char *s_value = value;
crm_data_t *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;
}
crm_name = crm_concat(CRM_META, key, '_');
hash2field(crm_name, value, user_data);
crm_free(crm_name);
}
#if CRM_DEPRECATED_SINCE_2_0_3
GHashTable *
xml2list_202(crm_data_t *parent)
{
crm_data_t *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("No attributes in %s",
crm_element_name(parent));
crm_log_xml_debug_2(
parent,"No attributes for resource op");
}
xml_child_iter_filter(
nvpair_list, node_iter, XML_CIB_TAG_NVPAIR,
const char *key = crm_element_value(
node_iter, XML_NVPAIR_ATTR_NAME);
const char *value = crm_element_value(
node_iter, XML_NVPAIR_ATTR_VALUE);
crm_debug_2("Added %s=%s", key, value);
g_hash_table_insert(
nvpair_hash, crm_strdup(key), crm_strdup(value));
);
return nvpair_hash;
}
#endif
GHashTable *
xml2list(crm_data_t *parent)
{
crm_data_t *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));
);
return nvpair_hash;
}
static void
assign_uuid(crm_data_t *xml_obj)
{
cl_uuid_t new_uuid;
char *new_uuid_s = NULL;
const char *tag_name = crm_element_name(xml_obj);
const char *tag_id = ID(xml_obj);
crm_malloc0(new_uuid_s, 38);
cl_uuid_generate(&new_uuid);
cl_uuid_unparse(&new_uuid, new_uuid_s);
crm_warn("Updating object from <%s id=%s/> to <%s id=%s/>",
tag_name, tag_id?tag_id:"__empty__", tag_name, new_uuid_s);
crm_xml_add(xml_obj, XML_ATTR_ID, new_uuid_s);
crm_log_xml_debug(xml_obj, "Updated object");
crm_free(new_uuid_s);
}
static gboolean
tag_needs_id(const char *tag_name)
{
int lpc = 0;
const char *allowed_list[] = {
XML_TAG_CIB,
XML_TAG_FRAGMENT,
XML_CIB_TAG_NODES,
XML_CIB_TAG_RESOURCES,
XML_CIB_TAG_CONSTRAINTS,
XML_CIB_TAG_STATUS,
XML_LRM_TAG_RESOURCES,
"configuration",
"crm_config",
"attributes",
"operations",
"diff",
"diff-added",
"diff-removed",
};
for(lpc = 0; lpc < DIMOF(allowed_list); lpc++) {
if(safe_str_eq(tag_name, allowed_list[lpc])) {
/* this tag is never meant to have an ID */
return FALSE;
}
}
return TRUE;
}
static gboolean
non_unique_allowed(const char *tag_name)
{
int lpc = 0;
const char *non_unique[] = {
XML_LRM_TAG_RESOURCE,
XML_LRM_TAG_RSC_OP,
};
for(lpc = 0; lpc < DIMOF(non_unique); lpc++) {
if(safe_str_eq(tag_name, non_unique[lpc])) {
/* this tag can have a non-unique ID */
return TRUE;
}
}
return FALSE;
}
gboolean
do_id_check(crm_data_t *xml_obj, GHashTable *id_hash,
gboolean silent_add, gboolean silent_rename)
{
char *lookup_id = NULL;
gboolean modified = FALSE;
char *old_id = NULL;
const char *tag_id = NULL;
const char *tag_name = NULL;
const char *lookup_value = NULL;
gboolean created_hash = FALSE;
if(xml_obj == NULL) {
return FALSE;
} else if(id_hash == NULL) {
created_hash = TRUE;
id_hash = g_hash_table_new_full(
g_str_hash, g_str_equal,
g_hash_destroy_str, g_hash_destroy_str);
}
xml_child_iter(
xml_obj, xml_child,
if(do_id_check(xml_child, id_hash, silent_add, silent_rename)) {
modified = TRUE;
}
);
tag_id = ID(xml_obj);
tag_name = TYPE(xml_obj);
if(tag_needs_id(tag_name) == FALSE) {
crm_debug_5("%s does not need an ID", tag_name);
goto finish_id_check;
} else if(tag_id != NULL && non_unique_allowed(tag_name)){
crm_debug_5("%s does not need top be unique", tag_name);
goto finish_id_check;
}
lookup_id = NULL;
if(tag_id != NULL) {
lookup_id = crm_concat(tag_name, tag_id, '-');
lookup_value = g_hash_table_lookup(id_hash, lookup_id);
if(lookup_value == NULL) {
g_hash_table_insert(id_hash, lookup_id, crm_strdup(tag_id));
goto finish_id_check;
}
modified |= (!silent_rename);
} else {
modified |= (!silent_add);
}
if(tag_id != NULL) {
old_id = crm_strdup(tag_id);
}
crm_free(lookup_id);
assign_uuid(xml_obj);
tag_id = ID(xml_obj);
if(modified == FALSE) {
/* nothing to report */
} else if(old_id != NULL && safe_str_neq(tag_id, old_id)) {
crm_err("\"id\" collision detected... Multiple '%s' entries"
" with id=\"%s\", assigned id=\"%s\"",
tag_name, old_id, tag_id);
} else if(old_id == NULL && tag_id != NULL) {
crm_err("Detected <%s.../> object without an ID. Assigned: %s",
tag_name, tag_id);
}
crm_free(old_id);
finish_id_check:
if(created_hash) {
g_hash_table_destroy(id_hash);
}
return modified;
}
typedef struct name_value_s
{
const char *name;
const void *value;
} name_value_t;
static gint
sort_pairs(gconstpointer a, gconstpointer b)
{
const name_value_t *pair_a = a;
const name_value_t *pair_b = b;
if(a == NULL && b == NULL) {
return 0;
} else if(a == NULL) {
return 1;
} else if(b == NULL) {
return -1;
}
if(pair_a->name == NULL && pair_b->name == NULL) {
return 0;
} else if(pair_a->name == NULL) {
return 1;
} else if(pair_b->name == NULL) {
return -1;
}
return strcmp(pair_a->name, pair_b->name);
}
static void
dump_pair(gpointer data, gpointer user_data)
{
name_value_t *pair = data;
crm_data_t *parent = user_data;
crm_xml_add(parent, pair->name, pair->value);
}
static void
free_pair(gpointer data, gpointer user_data)
{
name_value_t *pair = data;
crm_free(pair);
}
static crm_data_t *
sorted_xml(const crm_data_t *input)
{
GListPtr sorted = NULL;
GListPtr unsorted = NULL;
name_value_t *pair = NULL;
crm_data_t *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(NULL, 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);
g_list_foreach(sorted, free_pair, NULL);
g_list_free(sorted);
return result;
}
/* "c048eae664dba840e1d2060f00299e9d" */
char *
calculate_xml_digest(crm_data_t *input, gboolean sort)
{
int i = 0;
int digest_len = 16;
char *digest = NULL;
unsigned char *raw_digest = NULL;
crm_data_t *sorted = NULL;
char *buffer = NULL;
if(sort) {
sorted = sorted_xml(input);
} else {
sorted = copy_xml(input);
}
buffer = dump_xml_formatted(sorted);
CRM_CHECK(buffer != NULL && strlen(buffer) > 0,
free_xml(sorted); return NULL);
crm_malloc0(digest, (2 * digest_len + 1));
crm_malloc0(raw_digest, (digest_len + 1));
MD5((unsigned char *)buffer, strlen(buffer), raw_digest);
for(i = 0; i < digest_len; i++) {
sprintf(digest+(2*i), "%02x", raw_digest[i]);
}
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>
#endif
gboolean
validate_with_dtd(
crm_data_t *xml_blob, gboolean to_logs, const char *dtd_file)
{
gboolean valid = TRUE;
#if HAVE_LIBXML2
char *buffer = NULL;
xmlDocPtr doc = NULL;
xmlDtdPtr dtd = NULL;
xmlValidCtxtPtr cvp = NULL;
CRM_CHECK(xml_blob != NULL, return FALSE);
CRM_CHECK(dtd_file != NULL, return FALSE);
buffer = dump_xml_formatted(xml_blob);
CRM_CHECK(buffer != NULL, return FALSE);
doc = xmlParseMemory(buffer, strlen(buffer));
CRM_CHECK(doc != NULL, crm_free(buffer); return FALSE);
dtd = xmlParseDTD(NULL, (const xmlChar *)dtd_file);
CRM_CHECK(dtd != NULL, crm_free(buffer); return TRUE);
cvp = xmlNewValidCtxt();
CRM_CHECK(cvp != NULL, crm_free(buffer); return TRUE);
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)) {
crm_err("CIB does not validate against %s", dtd_file);
valid = FALSE;
crm_log_xml_debug(xml_blob, "invalid");
}
xmlFreeValidCtxt(cvp);
xmlFreeDtd(dtd);
xmlFreeDoc(doc);
crm_free(buffer);
#endif
return valid;
}