-/* $OSSEC, os_xml_access.c, v0.3, 2005/02/11, Daniel B. Cid$ */
-
/* Copyright (C) 2009 Trend Micro Inc.
* All rights reserved.
*
* Foundation
*/
-/* os_xml C Library.
- */
-
-
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "os_xml.h"
#include "os_xml_internal.h"
+/* Prototypes */
+static char **_GetElements(const OS_XML *_lxml, const char **element_name, XML_TYPE type) __attribute__((nonnull(1)));
+static char **_GetElementContent(OS_XML *_lxml, const char **element_name, const char *attr) __attribute__((nonnull(1, 2)));
-/* Internal functions */
-static char **_GetElements(const OS_XML *_lxml, const char **element_name,XML_TYPE type) __attribute__((nonnull(1)));
-static char **_GetElementContent(OS_XML *_lxml, const char **element_name, const char *attr) __attribute__((nonnull(1,2)));
-
-/* OS_ElementExist: v1.0: 2005/02/26
- * Check if a element exists
+/* Check if a element exists
* The element_name must be NULL terminated (last char)
*/
unsigned int OS_ElementExist(const OS_XML *_lxml, const char **element_name)
{
- unsigned int i=0,j=0,matched=0,totalmatch=0;
-
- if(element_name[0] == NULL)
- return(0);
-
- for(i=0,j=0;i<_lxml->cur;i++)
- {
- if(element_name[j] == NULL)
- j=0;
- if((_lxml->tp[i] == XML_ELEM)&&(_lxml->rl[i] == j))
- {
- if(strcmp(_lxml->el[i],element_name[j]) == 0)
- {
+ unsigned int i = 0, j = 0, matched = 0, totalmatch = 0;
+
+ if (element_name[0] == NULL) {
+ return (0);
+ }
+
+ for (i = 0, j = 0; i < _lxml->cur; i++) {
+ if (element_name[j] == NULL) {
+ j = 0;
+ }
+ if ((_lxml->tp[i] == XML_ELEM) && (_lxml->rl[i] == j)) {
+ if (strcmp(_lxml->el[i], element_name[j]) == 0) {
j++;
- matched=1;
- if(element_name[j] == NULL)
- {
- j=0;
+ matched = 1;
+ if (element_name[j] == NULL) {
+ j = 0;
totalmatch++;
}
continue;
}
}
- if((matched == 1) &&(j > _lxml->rl[i])&&
- (_lxml->tp[i] == XML_ELEM))
- {
- j=0;
- matched=0;
+ if ((matched == 1) && (j > _lxml->rl[i]) &&
+ (_lxml->tp[i] == XML_ELEM)) {
+ j = 0;
+ matched = 0;
}
}
- return(totalmatch);
+ return (totalmatch);
}
-
-/* RootElementExist: v1.0: 2005/02/26
- * Check if a root element exists
- */
+/* Check if a root element exists */
unsigned int OS_RootElementExist(const OS_XML *_lxml, const char *element_name)
{
- const char *(elements[])={element_name,NULL};
- return(OS_ElementExist(_lxml,elements));
+ const char *(elements[]) = {element_name, NULL};
+ return (OS_ElementExist(_lxml, elements));
}
-
-/* GetAttributes: v.0.1: 2005/03/01
- * Get the attributes of the element_name
- */
+/* Get the attributes of the element_name */
char **OS_GetAttributes(const OS_XML *_lxml, const char **element_name)
{
- return(_GetElements(_lxml,element_name,XML_ATTR));
+ return (_GetElements(_lxml, element_name, XML_ATTR));
}
-
-
-
-/* GetElements: v0.1: 2005/03/01
- * Get the elements children of the element_name
- */
+/* Get the elements children of the element_name */
char **OS_GetElements(const OS_XML *_lxml, const char **element_name)
{
- return(_GetElements(_lxml, element_name,XML_ELEM));
+ return (_GetElements(_lxml, element_name, XML_ELEM));
}
+/* Get the elements or attributes (internal use) */
+static char **_GetElements(const OS_XML *_lxml, const char **element_name, XML_TYPE type)
+{
+ unsigned i = 0, j = 0, k = 0, matched = 0, ready = 0;
+ char **ret = NULL;
+ char **ret_tmp = NULL;
+ if ((type == XML_ELEM) && (element_name == NULL)) {
+ ready = 1;
+ }
-
-/* _GetElements: v0.1: 2005/03/01
- * Get the elements or attributes (internal use)
- */
-static char **_GetElements(const OS_XML *_lxml, const char **element_name,XML_TYPE type)
-{
- unsigned i=0,j=0,k=0,matched=0,ready=0;
- char **ret=NULL;
- char **ret_tmp=NULL;
-
- if((type == XML_ELEM) && (element_name == NULL))
- ready=1;
-
- for(i=0,j=0;i<_lxml->cur;i++)
- {
- if((ready != 1) &&(element_name[j] == NULL))
- {
- if(matched ==1)
- ready=1;
- else
+ for (i = 0, j = 0; i < _lxml->cur; i++) {
+ if ((ready != 1) && (element_name[j] == NULL)) {
+ if (matched == 1) {
+ ready = 1;
+ } else {
break;
+ }
}
- if(j > 16)
- return(ret);
-
- if((ready == 1)&&(_lxml->tp[i] == type))
- {
- if(((type == XML_ATTR)&&(_lxml->rl[i] == j-1)
- &&(_lxml->el[i] != NULL))||
- ((type == XML_ELEM)&&(_lxml->rl[i] == j)&&
- (_lxml->el[i] != NULL)))
- {
- size_t el_size = strlen(_lxml->el[i])+1;
- ret_tmp = (char**)realloc(ret,(k+2)*sizeof(char *));
- if(ret_tmp == NULL)
+ if (j > 16) {
+ return (ret);
+ }
+
+ if ((ready == 1) && (_lxml->tp[i] == type)) {
+ if (((type == XML_ATTR) && (_lxml->rl[i] == j - 1)
+ && (_lxml->el[i] != NULL)) ||
+ ((type == XML_ELEM) && (_lxml->rl[i] == j) &&
+ (_lxml->el[i] != NULL))) {
+ size_t el_size = strlen(_lxml->el[i]) + 1;
+ ret_tmp = (char **)realloc(ret, (k + 2) * sizeof(char *));
+ if (ret_tmp == NULL) {
goto fail;
+ }
ret = ret_tmp;
- ret[k+1] = NULL;
- ret[k]=(char*)calloc(el_size,sizeof(char));
- if(ret[k] == NULL)
- {
+ ret[k + 1] = NULL;
+ ret[k] = (char *)calloc(el_size, sizeof(char));
+ if (ret[k] == NULL) {
goto fail;
}
- strncpy(ret[k],_lxml->el[i],el_size-1);
+ strncpy(ret[k], _lxml->el[i], el_size - 1);
k++;
}
}
- else if((_lxml->tp[i] == XML_ELEM)&&(_lxml->rl[i] == j)&&
- (element_name[j] != NULL))
- {
- if(strcmp(_lxml->el[i],element_name[j]) == 0)
- {
+ else if ((_lxml->tp[i] == XML_ELEM) && (_lxml->rl[i] == j) &&
+ (element_name[j] != NULL)) {
+ if (strcmp(_lxml->el[i], element_name[j]) == 0) {
j++;
- matched=1;
+ matched = 1;
continue;
}
}
- if(matched == 1)
- {
- if(((_lxml->tp[i]==XML_ATTR)&&(j > _lxml->rl[i]+1))||
- ((_lxml->tp[i] == XML_ELEM)&&(j > _lxml->rl[i])))
- {
- j=0;
- matched=0;
- if(element_name == NULL)
- ready=1;
- else
- ready=0;
+ if (matched == 1) {
+ if (((_lxml->tp[i] == XML_ATTR) && (j > _lxml->rl[i] + 1)) ||
+ ((_lxml->tp[i] == XML_ELEM) && (j > _lxml->rl[i]))) {
+ j = 0;
+ matched = 0;
+ if (element_name == NULL) {
+ ready = 1;
+ } else {
+ ready = 0;
+ }
}
}
}
- return(ret);
+ return (ret);
- fail:
+fail:
i = 0;
- if(ret)
- {
- while(ret[i])
- free(ret[i++]);
- free(ret);
+ if (ret) {
+ while (ret[i]) {
+ free(ret[i++]);
+ }
+ free(ret);
}
return (NULL);
}
-
-
-/* OS_GetOneContentforElement: v0.1: 2005/03/01
- * Get one value for a specific element.
- */
+/* Get one value for a specific element */
char *OS_GetOneContentforElement(OS_XML *_lxml, const char **element_name)
{
int i = 1;
_lxml->fol = 0;
ret = _GetElementContent(_lxml, element_name, NULL);
- if(ret == NULL)
- {
- return(NULL);
+ if (ret == NULL) {
+ return (NULL);
}
- if(ret[0] != NULL)
- {
+ if (ret[0] != NULL) {
uniqret = ret[0];
}
- /* Freeing memory */
- while(ret[i])
- {
+ /* Free memory */
+ while (ret[i]) {
free(ret[i]);
ret[i] = NULL;
i++;
}
free(ret);
- return(uniqret);
+ return (uniqret);
}
-
-/* OS_GetElementContent: v0.1: 2005/03/01
- * Get all values for a specific element
- */
+/* Get all values for a specific element */
char **OS_GetElementContent(OS_XML *_lxml, const char **element_name)
{
- _lxml->fol=0;
- return(_GetElementContent(_lxml, element_name, NULL));
+ _lxml->fol = 0;
+ return (_GetElementContent(_lxml, element_name, NULL));
}
-
-/* OS_GetContents: v0.1: 2005/03/01
- * Get the contents for a specific element
+/* Get the contents for a specific element
* Use element_name = NULL to start the state
*/
char **OS_GetContents(OS_XML *_lxml, const char **element_name)
{
- if(element_name == NULL)
- {
+ if (element_name == NULL) {
_lxml->fol = -1;
- return(NULL);
+ return (NULL);
}
- return(_GetElementContent(_lxml, element_name, NULL));
+ return (_GetElementContent(_lxml, element_name, NULL));
}
-
-
-/* OS_GetAttributeContent: v0.1: 2005/03/01
- * Get one value for a specific attribute
- */
+/* Get one value for a specific attribute */
char *OS_GetAttributeContent(OS_XML *_lxml, const char **element_name,
- const char *attribute_name)
+ const char *attribute_name)
{
char *uniqret = NULL;
char **ret = NULL;
- _lxml->fol=0;
-
- ret = _GetElementContent(_lxml, element_name,attribute_name);
-
- if(ret == NULL)
- return(NULL);
+ _lxml->fol = 0;
- if(ret[0] != NULL)
- {
- uniqret = ret[0];
+ ret = _GetElementContent(_lxml, element_name, attribute_name);
+ if (ret == NULL) {
+ return (NULL);
}
+ if (ret[0] != NULL) {
+ uniqret = ret[0];
+ }
+
int i = 1;
- while(ret[i] != NULL)
- {
+ while (ret[i] != NULL) {
free(ret[i++]);
}
free(ret);
- return(uniqret);
+ return (uniqret);
}
-
-/* _GetElementContent: v0.1: 2005/03/01
- * Get the values for an element or attribute
- */
+/* Get the values for an element or attribute */
static char **_GetElementContent(OS_XML *_lxml, const char **element_name, const char *attr)
{
int i = 0;
- unsigned int j = 0,k = 0,l = 0,matched = 0;
+ unsigned int j = 0, k = 0, l = 0, matched = 0;
char **ret = NULL;
char **ret_tmp;
- if(_lxml->fol >= 0 && (unsigned int)_lxml->fol == _lxml->cur)
- {
+ if (_lxml->fol >= 0 && (unsigned int)_lxml->fol == _lxml->cur) {
_lxml->fol = 0;
- return(NULL);
+ return (NULL);
}
- if(_lxml->fol > 0)
- {
- for(i=_lxml->fol;i>=0;i--)
- {
+ if (_lxml->fol > 0) {
+ for (i = _lxml->fol; i >= 0; i--) {
_lxml->fol = i;
- if(_lxml->rl[i] == 0)
+ if (_lxml->rl[i] == 0) {
break;
+ }
}
i = _lxml->fol;
- }
- else
- {
+ } else {
i = 0;
}
- /* Looping through all nodes */
- for(j=0,l=(unsigned int)i; l<_lxml->cur; l++)
- {
- if(element_name[j] == NULL)
- {
- if(matched !=1)
+ /* Loop over all nodes */
+ for (j = 0, l = (unsigned int)i; l < _lxml->cur; l++) {
+ if (element_name[j] == NULL) {
+ if (matched != 1) {
break;
+ }
}
- /* Setting maximum depth of 16. */
- if(j > 16)
+ /* Set maximum depth of 16 */
+ if (j > 16) {
goto fail;
-
+ }
/* If the type is not an element and the relation doesn't match,
- * keep going.
+ * keep going
*/
- if((_lxml->tp[l] != XML_ELEM) || (_lxml->rl[l] != j))
- {
- /* If the node relation is higher than we currently xml
+ if ((_lxml->tp[l] != XML_ELEM) || (_lxml->rl[l] != j)) {
+ /* If the node relation is higher than the current xml
* node, zero the position and look at it again (i--).
*/
- if(j > _lxml->rl[l])
- {
+ if (j > _lxml->rl[l]) {
j = 0;
matched = 0;
l--;
- }
- else
- {
+ } else {
continue;
}
}
-
- /* If the element name matches what we are looking for. */
- else if(element_name[j] != NULL && strcmp(_lxml->el[l], element_name[j]) == 0)
- {
+ /* If the element name matches what we are looking for */
+ else if (element_name[j] != NULL && strcmp(_lxml->el[l], element_name[j]) == 0) {
j++;
matched = 1;
- /* Get content if we are at the end of the array. */
- if(element_name[j] == NULL)
- {
- /* If we have an attribute to match. */
- if(attr != NULL)
- {
- unsigned int m=0;
- for(m=l+1; m<_lxml->cur; m++)
- {
- if(_lxml->tp[m] == XML_ELEM)
- {
+ /* Get content if we are at the end of the array */
+ if (element_name[j] == NULL) {
+ /* If we have an attribute to match */
+ if (attr != NULL) {
+ unsigned int m = 0;
+ for (m = l + 1; m < _lxml->cur; m++) {
+ if (_lxml->tp[m] == XML_ELEM) {
break;
}
- if(strcmp(attr, _lxml->el[m]) == 0)
- {
+ if (strcmp(attr, _lxml->el[m]) == 0) {
l = m;
break;
}
}
}
- if(_lxml->ct[l] != NULL)
- {
- /* Increasing the size of the array. */
- ret_tmp = (char**) realloc(ret,(k+2) * sizeof(char*));
- if(ret_tmp == NULL)
- {
- goto fail;
+ if (_lxml->ct[l] != NULL) {
+ /* Increase the size of the array */
+ ret_tmp = (char **) realloc(ret, (k + 2) * sizeof(char *));
+ if (ret_tmp == NULL) {
+ goto fail;
}
ret = ret_tmp;
- /* Adding new entry. */
+ /* Add new entry */
ret[k] = strdup(_lxml->ct[l]);
ret[k + 1] = NULL;
- if(ret[k] == NULL)
- {
+ if (ret[k] == NULL) {
goto fail;
}
matched = 1;
k++;
- if(attr != NULL)
- {
+ if (attr != NULL) {
break;
}
- else if(_lxml->fol != 0)
- {
- _lxml->fol = (int) l+1;
+ else if (_lxml->fol != 0) {
+ _lxml->fol = (int) l + 1;
break;
}
}
- /* Setting new array pointer. */
- if((l<_lxml->cur-1) && (_lxml->tp[l+1] == XML_ELEM))
- {
- j = _lxml->rl[l+1];
+ /* Set new array pointer */
+ if ((l < _lxml->cur - 1) && (_lxml->tp[l + 1] == XML_ELEM)) {
+ j = _lxml->rl[l + 1];
}
}
continue;
}
- if(j > _lxml->rl[l])
- {
+ if (j > _lxml->rl[l]) {
j = 0;
matched = 0;
}
}
- return(ret);
+ return (ret);
- fail:
+fail:
i = 0;
- if(ret)
- {
- while(ret[i])
- free(ret[i++]);
- free(ret);
+ if (ret) {
+ while (ret[i]) {
+ free(ret[i++]);
+ }
+ free(ret);
}
- return (NULL);
+ return (NULL);
}
-/* EOF */
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