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xml.c
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xml.c
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/*
* Copyright (C) 2017 OpenSIPS Solutions
*
* This file is part of opensips, a free SIP server.
*
* opensips 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 of the License, or
* (at your option) any later version
*
* opensips is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* History:
* --------
* 2017-02-15 initial version (rvlad-patrascu)
*/
#include "../../sr_module.h"
#include "../../mem/mem.h"
#include "../../dprint.h"
#include "../../pvar.h"
#include "../../ut.h"
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <string.h>
enum {
EL_VAR_TAG = 1,
EL_VAR_IDX = 2,
};
enum {
ACCESS_EL,
ACCESS_EL_VAL,
ACCESS_EL_ATTR
};
typedef struct _xml_element {
str tag;
int idx;
int var_flags;
pv_spec_t tag_var;
pv_spec_t idx_var;
struct _xml_element *next;
} xml_element_t;
typedef struct _xml_path {
str obj_name;
str attr; /* name of accessed attribute */
int access_mode; /* access mode of the last node in the path */
int attr_is_var;
pv_spec_t attr_var;
xml_element_t *elements;
} xml_path_t;
typedef struct _xml_object_t {
str name;
xmlDoc *xml_doc;
struct _xml_object_t *next;
} xml_object_t;
static int mod_init(void);
static int child_init(int);
static void mod_destroy(void);
/* PV functions */
static int pv_set_xml(struct sip_msg*, pv_param_t*, int, pv_value_t*);
static int pv_get_xml(struct sip_msg*, pv_param_t*, pv_value_t*);
static int pv_parse_xml_name(pv_spec_p , const str *);
static pv_export_t mod_items[] = {
{ {"xml", sizeof("xml")-1}, PVT_XML, pv_get_xml, pv_set_xml,
pv_parse_xml_name, 0, 0, 0},
{ {0, 0}, 0, 0, 0, 0, 0, 0, 0 }
};
struct module_exports exports= {
"xml", /* module's name */
MOD_TYPE_DEFAULT,/* class of this module */
MODULE_VERSION,
DEFAULT_DLFLAGS, /* dlopen flags */
0, /* load function */
NULL, /* OpenSIPS module dependencies */
NULL, /* exported functions */
0, /* exported async functions */
0, /* param exports */
0, /* exported statistics */
0, /* exported MI functions */
mod_items, /* exported pseudo-variables */
0, /* exported transformations */
0, /* extra processes */
0, /* module pre-initialization function */
mod_init, /* module initialization function */
0, /* reply processing function */
mod_destroy,
child_init, /* per-child init function */
0 /* reload confirm function */
};
xml_object_t *objects;
static int new_parsed_elem(xml_path_t *path, str tag_str, str idx_str)
{
xml_element_t *elem = NULL, *it;
elem = pkg_malloc(sizeof *elem);
if (!elem) {
LM_ERR("No more pkg memory\n");
return -1;
}
memset(elem, 0, sizeof *elem);
if (!tag_str.s) {
LM_ERR("No element name\n");
return -1;
}
if (*tag_str.s == '$') {
if (!pv_parse_spec(&tag_str, &elem->tag_var)) {
LM_ERR("Unable to parse variable in element name\n");
return -1;
}
elem->var_flags |= EL_VAR_TAG;
} else
elem->tag = tag_str;
if (idx_str.s) {
if (*idx_str.s == '$') {
if (!pv_parse_spec(&idx_str, &elem->idx_var)) {
LM_ERR("Unable to parse variable in index\n");
return -1;
}
elem->var_flags |= EL_VAR_IDX;
} else {
if (str2sint(&idx_str, &elem->idx) < 0) {
LM_ERR("Invalid index\n");
return -1;
}
if (elem->idx < 0) {
LM_ERR("Negative index\n");
return -1;
}
}
}
if (!path->elements)
path->elements = elem;
else {
for (it = path->elements; it->next; it = it->next) ;
it->next = elem;
}
return 0;
}
enum {
ST_START_NAME = 0,
ST_START_IDX = 1,
ST_END_IDX = 2,
ST_ACCESS = 3,
};
int pv_parse_xml_name(pv_spec_p sp, const str *in)
{
xml_path_t *path = NULL;
char *cur, *start;
int prev_state = -1;
str tag_str = {0,0}, idx_str = {0,0}, attr_str;
path = pkg_malloc(sizeof *path);
if(!path) {
LM_ERR("No more pkg memory\n");
return -1;
}
path->elements = NULL;
/* first, get this xml object name */
start = q_memchr(in->s, '/', in->len);
if (!in->s || in->len == 0 || start == in->s) {
LM_ERR("name required for this $xml var\n");
return -1;
}
path->obj_name.s = in->s;
path->obj_name.len = start ? start - in->s : in->len;
path->attr.s = NULL;
path->attr_is_var = 0;
path->access_mode = ACCESS_EL;
/* get each element in path */
start = in->s + path->obj_name.len;
for (cur = start; cur < in->s + in->len; cur++) {
switch (*cur) {
case '/':
/* parsed an element */
if (prev_state == ST_START_NAME) {
tag_str.len = cur - start;
if (tag_str.len == 0) {
LM_ERR("No element name\n");
return -1;
}
tag_str.s = start;
if (new_parsed_elem(path, tag_str, idx_str) < 0)
return -1;
} else if (prev_state == ST_END_IDX) {
if (new_parsed_elem(path, tag_str, idx_str) < 0)
return -1;
}
/* new element in path to parse */
start = cur + 1;
idx_str.s = NULL;
tag_str.s = NULL;
prev_state = ST_START_NAME;
break;
case '[':
if (prev_state != ST_START_NAME) {
LM_ERR("Index must follow an element name\n");
return -1;
}
tag_str.len = cur - start;
if (tag_str.len == 0) {
LM_ERR("No element name\n");
return -1;
}
tag_str.s = start;
start = cur + 1;
prev_state = ST_START_IDX;
break;
case ']':
if (prev_state != ST_START_IDX) {
LM_ERR("Mismatched parenthesis, must correspond with opening \'[\'\n");
return -1;
}
idx_str.len = cur - start;
if (idx_str.len == 0) {
LM_ERR("Empty index\n");
return -1;
}
idx_str.s = start;
prev_state = ST_END_IDX;
break;
case '.':
if (!memcmp(cur+1, "val", 3)) {
if (prev_state != ST_START_NAME && prev_state != ST_END_IDX) {
LM_ERR("<.attr> or <.val> must follow a complete path\n");
return -1;
}
if (prev_state == ST_START_NAME) {
tag_str.len = cur - start;
if (tag_str.len == 0) {
LM_ERR("No element name\n");
return -1;
}
tag_str.s = start;
}
path->access_mode = ACCESS_EL_VAL;
/* it was the final element in the path */
cur = in->s + in->len;
prev_state = ST_ACCESS;
break;
} else if (!memcmp(cur+1, "attr", 4)) {
if (prev_state != ST_START_NAME && prev_state != ST_END_IDX) {
LM_ERR("<.attr> or <.val> must follow a complete path\n");
return -1;
}
if (prev_state == ST_START_NAME) {
tag_str.len = cur - start;
if (tag_str.len == 0) {
LM_ERR("No element name\n");
return -1;
}
tag_str.s = start;
}
path->access_mode = ACCESS_EL_ATTR;
attr_str.len = in->len - (cur - in->s + 6); /* 6 = len(".attr/") */
if (attr_str.len == 0) {
LM_ERR("Empty attribute\n");
return -1;
}
attr_str.s = cur + 6;
if (*attr_str.s == '$') {
if (!pv_parse_spec(&attr_str, &path->attr_var)) {
LM_ERR("Unable to parse variable in element attribute\n");
return -1;
}
path->attr_is_var = 1;
} else
path->attr = attr_str;
/* it was the final element in the path */
cur = in->s + in->len;
prev_state = ST_ACCESS;
break;
}
break;
}
}
if (prev_state == ST_END_IDX || prev_state == ST_ACCESS) {
if (new_parsed_elem(path, tag_str, idx_str) < 0) {
return -1;
}
} else if (prev_state == ST_START_NAME) {
tag_str.len = cur - start;
if (tag_str.len == 0) {
LM_ERR("No element name\n");
return -1;
}
tag_str.s = start;
if (new_parsed_elem(path, tag_str, idx_str) < 0)
return -1;
}
sp->pvp.pvn.u.dname = path;
sp->pvp.pvv.s = NULL;
return 0;
}
static inline xml_object_t *get_xml_obj(xml_path_t *path)
{
xml_object_t *obj;
for (obj = objects; obj; obj = obj->next)
if (!str_strcmp(&obj->name, &path->obj_name))
return obj;
return NULL;
}
static int path_eval_vars(struct sip_msg* msg, xml_path_t *path)
{
pv_value_t val;
xml_element_t *el;
memset(&val, 0, sizeof(pv_value_t));
for (el = path->elements; el; el = el->next) {
if (el->var_flags & EL_VAR_TAG) {
if( pv_get_spec_value(msg, &el->tag_var ,&val) < 0) {
LM_ERR("Unable to get value from element variable\n");
return -1;
}
if (!(val.flags & PV_VAL_STR)) {
LM_ERR("Non string value for element name\n");
return -1;
}
el->tag = val.rs;
}
if (el->var_flags & EL_VAR_IDX) {
if( pv_get_spec_value(msg, &el->idx_var ,&val) < 0) {
LM_ERR("Unable to get value from index variable\n");
return -1;
}
if (!(val.flags & PV_VAL_INT)) {
LM_ERR("Non integer value for index\n");
return -1;
}
el->idx = val.ri;
}
}
if (path->attr_is_var) {
if( pv_get_spec_value(msg, &path->attr_var ,&val) < 0) {
LM_ERR("Unable to get value from attribute variable\n");
return -1;
}
if (!(val.flags & PV_VAL_STR)) {
LM_ERR("Non string value for attribute name\n");
return -1;
}
path->attr = val.rs;
}
return 0;
}
static xmlNode *get_node_by_path(xmlNode *root, xml_element_t *path_el)
{
xmlNode *cur;
str n_name;
int i;
char *p;
cur = root;
while (path_el) {
i = 0;
while (cur) {
n_name.s = (char *)cur->name;
n_name.len = strlen(n_name.s);
/* skip an undefined namespace prefix that may appear
* in the element name */
p = q_memchr(n_name.s, ':', n_name.len);
if (p) {
n_name.len = n_name.len - (p - n_name.s + 1);
n_name.s = p + 1;
}
if (!str_strcmp(&path_el->tag, &n_name)) {
if (i == path_el->idx)
break;
else
i++;
}
cur = xmlNextElementSibling(cur);
}
if (!cur) {
if (i != 0) {
LM_DBG("Invalid path for xml var - bad index [%d] for element: <%.*s>\n",
path_el->idx, path_el->tag.len, path_el->tag.s);
return NULL;
} else {
LM_DBG("Invalid path for xml var - no element named: <%.*s> \n",
path_el->tag.len, path_el->tag.s);
return NULL;
}
}
if (!path_el->next)
return cur;
else {
cur = cur->children;
path_el = path_el->next;
}
}
return NULL;
}
static int get_node_content(xmlNode *node, xmlBufferPtr xml_buf)
{
xmlNode *n_it;
for (n_it = node->children; n_it; n_it = n_it->next)
if (n_it->type == XML_TEXT_NODE && xmlBufferCat(xml_buf, n_it->content) < 0) {
LM_ERR("Unable to append string to xml buffer\n");
return -1;
}
return 0;
}
static xmlAttr *get_node_attr(xmlNode *node, str attr_name)
{
xmlAttr *cur_attr;
str cur_attr_name;
for (cur_attr = node->properties; cur_attr; cur_attr = cur_attr->next) {
cur_attr_name.s = (char *)cur_attr->name;
cur_attr_name.len = strlen(cur_attr_name.s);
if (!str_strcmp(&cur_attr_name, &attr_name))
return cur_attr;
}
return NULL;
}
static str res_buf;
int pv_get_xml(struct sip_msg* msg, pv_param_t* pvp, pv_value_t* res)
{
xml_path_t *path = NULL;
xml_object_t *obj;
xmlNode *root = NULL, *node;
xmlBufferPtr xml_buf = NULL;
xmlAttr *attr;
char *xml_buf_s;
int xml_buf_len;
path = (xml_path_t *)pvp->pvn.u.dname;
if (!path) {
LM_BUG("No path for xml var\n");
return pv_get_null( msg, pvp, res);
}
/* get the object refered in this xml var */
obj = get_xml_obj(path);
if (!obj) {
LM_DBG("Unknown object <%.*s>\n", path->obj_name.len, path->obj_name.s);
return pv_get_null( msg, pvp, res);
}
if (!obj->xml_doc) {
LM_DBG("Empty xml object\n");
return pv_get_null( msg, pvp, res);
}
if (path_eval_vars(msg, path) < 0)
return -1;
root = xmlDocGetRootElement(obj->xml_doc);
if (path->elements) {
node = get_node_by_path(root, path->elements);
if (!node) {
LM_DBG("Element not found\n");
return pv_get_null( msg, pvp, res);
}
} else
/* in case of dumping entire object, we do this from the root node */
node = root;
switch (path->access_mode) {
case ACCESS_EL:
if (!path->elements) {
xmlDocDumpMemory(obj->xml_doc, (xmlChar **)&xml_buf_s, &xml_buf_len);
/* libxml seems to place an unnecessary newline at the end of the doc dump */
if (xml_buf_s[xml_buf_len-1] == '\n')
xml_buf_len--;
} else {
xml_buf = xmlBufferCreate();
if (!xml_buf) {
LM_ERR("Unable to obtain xml buffer\n");
return pv_get_null( msg, pvp, res);
}
xml_buf_len = xmlNodeDump(xml_buf, obj->xml_doc, node, 0, 0);
if (xml_buf_len == -1) {
LM_ERR("Unable to dump node to xml buffer\n");
goto err_free_xml_buf;
}
xml_buf_s = (char *)xmlBufferContent(xml_buf);
if (!xml_buf_s) {
LM_ERR("Unable to obtain xml buffer content\n");
goto err_free_xml_buf;
}
}
if (pkg_str_extend(&res_buf, xml_buf_len) != 0) {
LM_ERR("No more pkg mem\n");
if (xml_buf)
xmlBufferFree(xml_buf);
else
xmlFree(xml_buf_s);
return pv_get_null( msg, pvp, res);
}
memcpy(res_buf.s, xml_buf_s, xml_buf_len);
if (xml_buf)
xmlBufferFree(xml_buf);
else
xmlFree(xml_buf_s);
res->rs.s = res_buf.s;
res->rs.len = xml_buf_len;
break;
case ACCESS_EL_VAL:
xml_buf = xmlBufferCreate();
if (!xml_buf) {
LM_ERR("Unable to obtain xml buffer\n");
return pv_get_null( msg, pvp, res);
}
if (get_node_content(node, xml_buf) < 0) {
LM_ERR("Unable to get node text content\n");
goto err_free_xml_buf;
}
xml_buf_len = xmlBufferLength(xml_buf);
if (pkg_str_extend(&res_buf, xml_buf_len) != 0) {
LM_ERR("No more pkg mem\n");
goto err_free_xml_buf;
}
xml_buf_s = (char *)xmlBufferContent(xml_buf);
if (!xml_buf_s) {
LM_ERR("Unable to obtain xml buffer content\n");
goto err_free_xml_buf;
}
memcpy(res_buf.s, xml_buf_s, xml_buf_len);
xmlBufferFree(xml_buf);
res->rs.s = res_buf.s;
res->rs.len = xml_buf_len;
break;
case ACCESS_EL_ATTR:
attr = get_node_attr(node, path->attr);
if (!attr) {
LM_DBG("Attribute: %.*s not found\n", path->attr.len, path->attr.s);
return pv_get_null( msg, pvp, res);
}
res->rs.s = (char *)attr->children->content;
res->rs.len = strlen(res->rs.s);
}
res->flags = PV_VAL_STR;
return 0;
err_free_xml_buf:
xmlBufferFree(xml_buf);
return pv_get_null( msg, pvp, res);
}
static int insert_new_node(xmlDoc *doc, xmlNode *parent, xmlDoc *new_doc, xml_path_t *path, str xml_str)
{
xmlNode *new_root, *lead_ws_node, *trail_ws_node;
char lead_ws[64] = {0}, trail_ws[64] = {0};
char *c;
int lead_ws_len = 0, trail_ws_len = 0;
/* libxml ignores leading and trailing whitespaces when parsing an XML
* block (if they are not contained IN the root node) so, when adding a
* new node, it would be impossible to insert it with indentation under
* an existing node unless we add the whitespaces manually as nodes in the tree
*/
/* add leading whitespaces node to existing tree */
for (c = xml_str.s; c - xml_str.s < xml_str.len &&
(*c == ' ' || *c == '\t' || *c == '\n'); c++)
lead_ws[lead_ws_len++] = *c;
if (lead_ws_len) {
if ((lead_ws_node = xmlNewText(BAD_CAST lead_ws)) == NULL) {
LM_ERR("Unable to create node with leading whitespaces\n");
return -1;
}
if (!xmlAddChild(parent, lead_ws_node)) {
LM_ERR("Unable to add node with leading whitespaces\n");
return -1;
}
}
/* add root of new xml block */
new_root = xmlDocGetRootElement(new_doc);
xmlSetTreeDoc(new_root, doc);
if (!xmlAddChild(parent, new_root)) {
LM_ERR("Unable to link new xml block into existing tree\n");
return -1;
}
/* add trailing whitespaces node */
c = NULL;
for (c = xml_str.s + xml_str.len - 1; c > xml_str.s &&
(*c == ' ' || *c == '\t' || *c == '\n'); c--) ;
trail_ws_len = xml_str.len - (c+1 - xml_str.s);
if (trail_ws_len) {
memcpy(trail_ws, c+1, trail_ws_len);
if ((trail_ws_node = xmlNewText(BAD_CAST trail_ws)) == NULL) {
LM_ERR("Unable to create node with trailing whitespaces\n");
return -1;
}
if (!xmlAddChild(parent, trail_ws_node)) {
LM_ERR("Unable to add node with trailing whitespaces\n");
return -1;
}
}
return 0;
}
static int set_node_content(xmlNode *node, str new_content)
{
xmlNode *n_it, *tmp = NULL, *new_txt;
int set = 0;
/* remove all text nodes */
if (!new_content.s)
set = 1;
for (n_it = node->children; n_it; n_it = tmp) {
tmp = n_it->next;
if (n_it->type == XML_TEXT_NODE && !xmlIsBlankNode(n_it)) {
if (!set) {
/* replace existing text node content with given string */
xmlNodeSetContentLen(n_it, BAD_CAST new_content.s, new_content.len);
set = 1;
} else {
/* remove any other text node */
xmlUnlinkNode(n_it);
xmlFreeNode(n_it);
}
}
}
/* no existing text nodes, create one */
if (new_content.s && !set) {
if ((new_txt = xmlNewTextLen(BAD_CAST new_content.s, new_content.len)) == NULL) {
LM_ERR("Unable to create text node\n");
return -1;
}
if (!xmlAddChild(node, new_txt)) {
LM_ERR("Unable to add text node\n");
return -1;
}
}
return 0;
}
int pv_set_xml(struct sip_msg* msg, pv_param_t* pvp, int flag, pv_value_t* val)
{
xml_path_t *path = NULL;
xml_object_t *obj;
xmlDoc *new_doc = NULL;
xmlNode *root, *node = NULL;
str empty_str = {0,0};
char *attr_name_s, *attr_val_s;
path = (xml_path_t *)pvp->pvn.u.dname;
if (!path) {
LM_BUG("No path for xml var\n");
return -1;
}
/* get the object refered in this xml var */
obj = get_xml_obj(path);
if (path_eval_vars(msg, path) < 0)
return -1;
if (obj && obj->xml_doc && path->elements) {
root = xmlDocGetRootElement(obj->xml_doc);
node = get_node_by_path(root, path->elements);
if (!node) {
LM_NOTICE("Element not found\n");
return -1;
}
}
if (!val || val->flags & PV_VAL_NULL) {
if (!obj) {
LM_ERR("Uninitialized xml object: %.*s\n", path->obj_name.len,
path->obj_name.s);
return -1;
}
switch (path->access_mode) {
case ACCESS_EL:
if (!path->elements) { /* we only have the object name in path */
if (!obj->xml_doc) /* attempted to clear empty xml object */
return 0;
/* clear the entire object */
xmlFreeDoc(obj->xml_doc);
obj->xml_doc = NULL;
} else {
/* delete node */
if (!node) {
LM_NOTICE("Element not found\n");
return -1;
}
xmlUnlinkNode(node);
xmlFreeNode(node);
}
break;
case ACCESS_EL_VAL:
if (!obj->xml_doc) {
LM_NOTICE("Empty xml object\n");
return -1;
}
if (!node) {
LM_NOTICE("Element not found\n");
return -1;
}
if (set_node_content(node, empty_str) < 0) {
LM_ERR("Unable to clear text content for element <%s>\n", node->name);
return -1;
}
break;
case ACCESS_EL_ATTR:
if (!obj->xml_doc) {
LM_DBG("Empty xml object\n");
return -1;
}
if (!node) {
LM_NOTICE("Element not found\n");
return -1;
}
attr_name_s = pkg_malloc(path->attr.len+1);
if (!attr_name_s) {
LM_ERR("No more pkg mem\n");
return -1;
}
memcpy(attr_name_s, path->attr.s, path->attr.len);
attr_name_s[path->attr.len] = 0;
if (xmlUnsetProp(node, BAD_CAST attr_name_s) < 0) {
LM_ERR("Unable to remove attribute: %s\n", attr_name_s);
pkg_free(attr_name_s);
return -1;
}
pkg_free(attr_name_s);
}
} else if (val->flags & PV_VAL_STR) {
switch (path->access_mode) {
case ACCESS_EL:
if (!obj) {
if (!path->elements) {
/* "instantiate" xml object */
obj = pkg_malloc(sizeof *obj);
if (!obj) {
LM_ERR("No more pkg memory\n");
return -1;
}
obj->xml_doc = NULL;
obj->name.len = path->obj_name.len;
obj->name.s = path->obj_name.s;
obj->next = objects;
objects = obj;
} else {
LM_ERR("Unknown object <%.*s>\n", path->obj_name.len, path->obj_name.s);
return -1;
}
}
if (val->rs.len == 0) {
if (!path->elements) {
if (obj->xml_doc)
/* clear the entire object if not empty */
xmlFreeDoc(obj->xml_doc);
obj->xml_doc = NULL;
} else {
LM_ERR("Empty string\n");
return -1;
}
} else {
/* parse given XML block and build a tree */
new_doc = xmlParseMemory(val->rs.s, val->rs.len);
if (!new_doc) {
LM_ERR("Failed to parse xml block\n");
return -1;
}
if (!path->elements) {
/* clear the entire object if not empty */
if (obj->xml_doc)
xmlFreeDoc(obj->xml_doc);
/* initialize object with given xml block */
obj->xml_doc = new_doc;
} else {
if (insert_new_node(obj->xml_doc, node, new_doc, path, val->rs) < 0) {
LM_ERR("Unable to add new element\n");
return -1;
}
}
}
break;
case ACCESS_EL_VAL:
if (!obj) {
LM_ERR("Uninitialized xml object: %.*s\n", path->obj_name.len,
path->obj_name.s);
return -1;
}
if (!obj->xml_doc) {
LM_DBG("Empty xml object\n");
return -1;
}
if (!node) {
LM_NOTICE("Element not found\n");
return -1;
}
if (set_node_content(node, val->rs) < 0) {
LM_ERR("Unable to set content for element <%s>\n", node->name);
return -1;
}
break;
case ACCESS_EL_ATTR:
if (!obj) {
LM_ERR("Uninitialized xml object: %.*s\n", path->obj_name.len,
path->obj_name.s);
return -1;
}
if (!obj->xml_doc) {
LM_DBG("Empty xml object\n");
return -1;
}
if (!node) {
LM_NOTICE("Element not found\n");
return -1;
}
attr_name_s = pkg_malloc(path->attr.len+1);
if (!attr_name_s) {
LM_ERR("No more pkg mem\n");
return -1;
}
memcpy(attr_name_s, path->attr.s, path->attr.len);
attr_name_s[path->attr.len] = 0;
attr_val_s = pkg_malloc(val->rs.len+1);
if (!attr_val_s) {
LM_ERR("No more pkg mem\n");
return -1;
}
memcpy(attr_val_s, val->rs.s, val->rs.len);
attr_val_s[val->rs.len] = 0;
if (!xmlSetProp(node, BAD_CAST attr_name_s, BAD_CAST attr_val_s)) {
LM_ERR("Unable to set/reset attribute: %s\n", attr_name_s);
pkg_free(attr_name_s);
pkg_free(attr_val_s);
return -1;
}
pkg_free(attr_name_s);
pkg_free(attr_val_s);
}
} else {
LM_ERR("Non-string value\n");
return -1;
}
return 0;
}
static int mod_init(void)
{
return 0;
}
static int child_init(int rank)
{
return 0;
}
static void mod_destroy(void)
{
return;
}