[Freeswitch-svn] [commit] r5537 - freeswitch/trunk/scripts/contrib/trixter
Freeswitch SVN
trixter at freeswitch.org
Wed Jul 18 04:25:13 EDT 2007
Author: trixter
Date: Wed Jul 18 04:25:12 2007
New Revision: 5537
Added:
freeswitch/trunk/scripts/contrib/trixter/switch_xml.c
Log:
patch for newer GCC versions with better error checking
Added: freeswitch/trunk/scripts/contrib/trixter/switch_xml.c
==============================================================================
--- (empty file)
+++ freeswitch/trunk/scripts/contrib/trixter/switch_xml.c Wed Jul 18 04:25:12 2007
@@ -0,0 +1,1783 @@
+/*
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005/2006, Anthony Minessale II <anthmct at yahoo.com>
+ *
+ * Version: MPL 1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ *
+ * The Initial Developer of the Original Code is
+ * Anthony Minessale II <anthmct at yahoo.com>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Anthony Minessale II <anthmct at yahoo.com>
+ *
+ *
+ * switch_xml.c -- XML PARSER
+ *
+ * Derived from ezxml http://ezxml.sourceforge.net
+ * Original Copyright
+ *
+ * Copyright 2004, 2006 Aaron Voisine <aaron at voisine.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <switch.h>
+#ifndef WIN32
+#include <switch_private.h>
+#endif
+
+#ifdef HAVE_MMAP
+#include <sys/mman.h>
+#ifdef __sun
+extern int madvise(caddr_t, size_t, int);
+#endif
+#endif
+
+#define SWITCH_XML_WS "\t\r\n " // whitespace
+#define SWITCH_XML_ERRL 128 // maximum error string length
+
+typedef struct switch_xml_root *switch_xml_root_t;
+struct switch_xml_root { // additional data for the root tag
+ struct switch_xml xml; // is a super-struct built on top of switch_xml struct
+ switch_xml_t cur; // current xml tree insertion point
+ char *m; // original xml string
+ switch_size_t len; // length of allocated memory for mmap
+ uint8_t dynamic;
+ char *u; // UTF-8 conversion of string if original was UTF-16
+ char *s; // start of work area
+ char *e; // end of work area
+ char **ent; // general entities (ampersand sequences)
+ char ***attr; // default attributes
+ char ***pi; // processing instructions
+ short standalone; // non-zero if <?xml standalone="yes"?>
+ char err[SWITCH_XML_ERRL]; // error string
+};
+
+char *SWITCH_XML_NIL[] = { NULL }; // empty, null terminated array of strings
+
+struct switch_xml_binding {
+ switch_xml_search_function_t function;
+ switch_xml_section_t sections;
+ void *user_data;
+ struct switch_xml_binding *next;
+};
+
+typedef struct switch_xml_binding switch_xml_binding_t;
+static switch_xml_binding_t *BINDINGS = NULL;
+static switch_xml_t MAIN_XML_ROOT = NULL;
+static switch_memory_pool_t *XML_MEMORY_POOL;
+static switch_mutex_t *XML_LOCK;
+static switch_thread_rwlock_t *RWLOCK;
+static uint32_t lock_count = 0;
+
+struct xml_section_t {
+ const char *name;
+ switch_xml_section_t section;
+};
+
+
+static struct xml_section_t SECTIONS[] = {
+ {"result", SWITCH_XML_SECTION_RESULT},
+ {"config", SWITCH_XML_SECTION_CONFIG},
+ {"directory", SWITCH_XML_SECTION_DIRECTORY},
+ {"dialplan", SWITCH_XML_SECTION_DIALPLAN},
+ {"phrases", SWITCH_XML_SECTION_PHRASES},
+ {NULL, 0}
+};
+
+SWITCH_DECLARE(switch_xml_section_t) switch_xml_parse_section_string(const char *str)
+{
+ size_t x;
+ char buf[1024] = "";
+ switch_xml_section_t sections = SWITCH_XML_SECTION_RESULT;
+
+ if (str) {
+ for (x = 0; x < strlen(str); x++) {
+ buf[x] = (char) tolower((int) str[x]);
+ }
+ for (x = 0;; x++) {
+ if (!SECTIONS[x].name) {
+ break;
+ }
+ if (strstr(buf, SECTIONS[x].name)) {
+ sections |= SECTIONS[x].section;
+ }
+ }
+ }
+ return sections;
+}
+
+SWITCH_DECLARE(switch_status_t) switch_xml_bind_search_function(switch_xml_search_function_t function, switch_xml_section_t sections, void *user_data)
+{
+ switch_xml_binding_t *binding = NULL, *ptr = NULL;
+ assert(function != NULL);
+
+ if (!(binding = switch_core_alloc(XML_MEMORY_POOL, sizeof(*binding)))) {
+ return SWITCH_STATUS_MEMERR;
+ }
+
+ binding->function = function;
+ binding->sections = sections;
+ binding->user_data = user_data;
+
+ switch_mutex_lock(XML_LOCK);
+ for (ptr = BINDINGS; ptr && ptr->next; ptr = ptr->next);
+
+ if (ptr) {
+ ptr->next = binding;
+ } else {
+ BINDINGS = binding;
+ }
+ switch_mutex_unlock(XML_LOCK);
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+
+SWITCH_DECLARE(switch_xml_t) switch_xml_find_child(switch_xml_t node, const char *childname, const char *attrname, const char *value)
+{
+ switch_xml_t p = NULL;
+
+ if (!(childname && attrname && value)) {
+ return node;
+ }
+
+ for (p = switch_xml_child(node, childname); p; p = p->next) {
+ const char *aname = switch_xml_attr(p, attrname);
+ if (aname && value && !strcasecmp(aname, value)) {
+ break;
+ }
+ }
+
+ return p;
+}
+
+// returns the first child tag with the given name or NULL if not found
+SWITCH_DECLARE(switch_xml_t) switch_xml_child(switch_xml_t xml, const char *name)
+{
+ xml = (xml) ? xml->child : NULL;
+ while (xml && strcmp(name, xml->name))
+ xml = xml->sibling;
+ return xml;
+}
+
+// returns the Nth tag with the same name in the same subsection or NULL if not
+// found
+switch_xml_t switch_xml_idx(switch_xml_t xml, int idx)
+{
+ for (; xml && idx; idx--)
+ xml = xml->next;
+ return xml;
+}
+
+// returns the value of the requested tag attribute or "" if not found
+SWITCH_DECLARE(const char *) switch_xml_attr_soft(switch_xml_t xml, const char *attr)
+{
+ const char *ret = switch_xml_attr(xml, attr);
+
+ return ret ? ret : "";
+}
+
+// returns the value of the requested tag attribute or NULL if not found
+SWITCH_DECLARE(const char *) switch_xml_attr(switch_xml_t xml, const char *attr)
+{
+ int i = 0, j = 1;
+ switch_xml_root_t root = (switch_xml_root_t) xml;
+
+ if (!xml || !xml->attr)
+ return NULL;
+ while (xml->attr[i] && strcmp(attr, xml->attr[i]))
+ i += 2;
+ if (xml->attr[i])
+ return xml->attr[i + 1]; // found attribute
+
+ while (root->xml.parent)
+ root = (switch_xml_root_t) root->xml.parent; // root tag
+ for (i = 0; root->attr[i] && strcmp(xml->name, root->attr[i][0]); i++);
+ if (!root->attr[i])
+ return NULL; // no matching default attributes
+ while (root->attr[i][j] && strcmp(attr, root->attr[i][j]))
+ j += 3;
+ return (root->attr[i][j]) ? root->attr[i][j + 1] : NULL; // found default
+}
+
+// same as switch_xml_get but takes an already initialized va_list
+static switch_xml_t switch_xml_vget(switch_xml_t xml, va_list ap)
+{
+ char *name = va_arg(ap, char *);
+ int idx = -1;
+
+ if (name && *name) {
+ idx = va_arg(ap, int);
+ xml = switch_xml_child(xml, name);
+ }
+ return (idx < 0) ? xml : switch_xml_vget(switch_xml_idx(xml, idx), ap);
+}
+
+// Traverses the xml tree to retrieve a specific subtag. Takes a variable
+// length list of tag names and indexes. The argument list must be terminated
+// by either an index of -1 or an empty string tag name. Example:
+// title = switch_xml_get(library, "shelf", 0, "book", 2, "title", -1);
+// This retrieves the title of the 3rd book on the 1st shelf of library.
+// Returns NULL if not found.
+SWITCH_DECLARE(switch_xml_t) switch_xml_get(switch_xml_t xml,...)
+{
+ va_list ap;
+ switch_xml_t r;
+
+ va_start(ap, xml);
+ r = switch_xml_vget(xml, ap);
+ va_end(ap);
+ return r;
+}
+
+// returns a null terminated array of processing instructions for the given
+// target
+SWITCH_DECLARE(const char **) switch_xml_pi(switch_xml_t xml, const char *target)
+{
+ switch_xml_root_t root = (switch_xml_root_t) xml;
+ int i = 0;
+
+ if (!root)
+ return (const char **) SWITCH_XML_NIL;
+ while (root->xml.parent)
+ root = (switch_xml_root_t) root->xml.parent; // root tag
+ while (root->pi[i] && strcmp(target, root->pi[i][0]))
+ i++; // find target
+ return (const char **) ((root->pi[i]) ? root->pi[i] + 1 : SWITCH_XML_NIL);
+}
+
+// set an error string and return root
+static switch_xml_t switch_xml_err(switch_xml_root_t root, char *s, const char *err, ...)
+{
+ va_list ap;
+ int line = 1;
+ char *t, fmt[SWITCH_XML_ERRL];
+
+ for (t = root->s; t && t < s; t++)
+ if (*t == '\n')
+ line++;
+ snprintf(fmt, SWITCH_XML_ERRL, "[error near line %d]: %s", line, err);
+
+ va_start(ap, err);
+ vsnprintf(root->err, SWITCH_XML_ERRL, fmt, ap);
+ va_end(ap);
+
+ return &root->xml;
+}
+
+// Recursively decodes entity and character references and normalizes new lines
+// ent is a null terminated array of alternating entity names and values. set t
+// to '&' for general entity decoding, '%' for parameter entity decoding, 'c'
+// for cdata sections, ' ' for attribute normalization, or '*' for non-cdata
+// attribute normalization. Returns s, or if the decoded string is longer than
+// s, returns a malloced string that must be freed.
+static char *switch_xml_decode(char *s, char **ent, char t)
+{
+ char *e, *r = s, *m = s;
+ long b, c, d, l;
+
+ for (; *s; s++) { // normalize line endings
+ while (*s == '\r') {
+ *(s++) = '\n';
+ if (*s == '\n')
+ memmove(s, (s + 1), strlen(s));
+ }
+ }
+
+ for (s = r;;) {
+ while (*s && *s != '&' && (*s != '%' || t != '%') && !isspace((int) (*s)))
+ s++;
+
+ if (!*s)
+ break;
+ else if (t != 'c' && !strncmp(s, "&#", 2)) { // character reference
+ if (s[2] == 'x')
+ c = strtol(s + 3, &e, 16); // base 16
+ else
+ c = strtol(s + 2, &e, 10); // base 10
+ if (!c || *e != ';') {
+ s++;
+ continue;
+ } // not a character ref
+
+ if (c < 0x80)
+ *(s++) = (char) c; // US-ASCII subset
+ else { // multi-byte UTF-8 sequence
+ for (b = 0, d = c; d; d /= 2)
+ b++; // number of bits in c
+ b = (b - 2) / 5; // number of bytes in payload
+ *(s++) = (char) ((0xFF << (7 - b)) | (c >> (6 * b))); // head
+ while (b)
+ *(s++) = (char) (0x80 | ((c >> (6 * --b)) & 0x3F)); // payload
+ }
+
+ memmove(s, strchr(s, ';') + 1, strlen(strchr(s, ';')));
+ } else if ((*s == '&' && (t == '&' || t == ' ' || t == '*')) || (*s == '%' && t == '%')) { // entity reference
+ for (b = 0; ent[b] && strncmp(s + 1, ent[b], strlen(ent[b])); b += 2); // find entity in entity list
+
+ if (ent[b++]) { // found a match
+ if ((c = (long) strlen(ent[b])) - 1 > (e = strchr(s, ';')) - s) {
+ l = (d = (long) (s - r)) + c + (long) strlen(e); // new length
+ r = (r == m) ? strcpy(malloc(l), r) : realloc(r, l);
+ e = strchr((s = r + d), ';'); // fix up pointers
+ }
+
+ memmove(s + c, e + 1, strlen(e)); // shift rest of string
+ strncpy(s, ent[b], c); // copy in replacement text
+ } else
+ s++; // not a known entity
+ } else if ((t == ' ' || t == '*') && isspace((int) (*s)))
+ *(s++) = ' ';
+ else
+ s++; // no decoding needed
+ }
+
+ if (t == '*') { // normalize spaces for non-cdata attributes
+ for (s = r; *s; s++) {
+ if ((l = (long) strspn(s, " ")))
+ memmove(s, s + l, strlen(s + l) + 1);
+ while (*s && *s != ' ')
+ s++;
+ }
+ if (--s >= r && *s == ' ')
+ *s = '\0'; // trim any trailing space
+ }
+ return r;
+}
+
+// called when parser finds start of new tag
+static void switch_xml_open_tag(switch_xml_root_t root, char *name, char **attr)
+{
+ switch_xml_t xml = root->cur;
+
+ if (xml->name)
+ xml = switch_xml_add_child(xml, name, strlen(xml->txt));
+ else
+ xml->name = name; // first open tag
+
+ xml->attr = attr;
+ root->cur = xml; // update tag insertion point
+}
+
+// called when parser finds character content between open and closing tag
+static void switch_xml_char_content(switch_xml_root_t root, char *s, switch_size_t len, char t)
+{
+ switch_xml_t xml = root->cur;
+ char *m = s;
+ switch_size_t l;
+
+ if (!xml || !xml->name || !len)
+ return; // sanity check
+
+ s[len] = '\0'; // null terminate text (calling functions anticipate this)
+ len = strlen(s = switch_xml_decode(s, root->ent, t)) + 1;
+
+ if (!*(xml->txt))
+ xml->txt = s; // initial character content
+ else { // allocate our own memory and make a copy
+ xml->txt = (xml->flags & SWITCH_XML_TXTM) // allocate some space
+ ? realloc(xml->txt, (l = strlen(xml->txt)) + len)
+ : strcpy(malloc((l = strlen(xml->txt)) + len), xml->txt);
+ strcpy(xml->txt + l, s); // add new char content
+ if (s != m)
+ free(s); // free s if it was malloced by switch_xml_decode()
+ }
+
+ if (xml->txt != m)
+ switch_xml_set_flag(xml, SWITCH_XML_TXTM);
+}
+
+// called when parser finds closing tag
+static switch_xml_t switch_xml_close_tag(switch_xml_root_t root, char *name, char *s)
+{
+ if (!root->cur || !root->cur->name || strcmp(name, root->cur->name))
+ return switch_xml_err(root, s, "unexpected closing tag </%s>", name);
+
+ root->cur = root->cur->parent;
+ return NULL;
+}
+
+// checks for circular entity references, returns non-zero if no circular
+// references are found, zero otherwise
+static int switch_xml_ent_ok(char *name, char *s, char **ent)
+{
+ int i;
+
+ for (;; s++) {
+ while (*s && *s != '&')
+ s++; // find next entity reference
+ if (!*s)
+ return 1;
+ if (!strncmp(s + 1, name, strlen(name)))
+ return 0; // circular ref.
+ for (i = 0; ent[i] && strncmp(ent[i], s + 1, strlen(ent[i])); i += 2);
+ if (ent[i] && !switch_xml_ent_ok(name, ent[i + 1], ent))
+ return 0;
+ }
+}
+
+// called when the parser finds a processing instruction
+static void switch_xml_proc_inst(switch_xml_root_t root, char *s, switch_size_t len)
+{
+ int i = 0, j = 1;
+ char *target = s;
+
+ s[len] = '\0'; // null terminate instruction
+ if (*(s += strcspn(s, SWITCH_XML_WS))) {
+ *s = '\0'; // null terminate target
+ s += strspn(s + 1, SWITCH_XML_WS) + 1; // skip whitespace after target
+ }
+
+ if (!strcmp(target, "xml")) { // <?xml ... ?>
+ if ((s = strstr(s, "standalone")) && !strncmp(s + strspn(s + 10, SWITCH_XML_WS "='\"") + 10, "yes", 3))
+ root->standalone = 1;
+ return;
+ }
+
+ if (!root->pi[0])
+ *(root->pi = malloc(sizeof(char **))) = NULL; //first pi
+
+ while (root->pi[i] && strcmp(target, root->pi[i][0]))
+ i++; // find target
+ if (!root->pi[i]) { // new target
+ root->pi = realloc(root->pi, sizeof(char **) * (i + 2));
+ root->pi[i] = malloc(sizeof(char *) * 3);
+ root->pi[i][0] = target;
+ root->pi[i][1] = (char *) (root->pi[i + 1] = NULL); // terminate pi list
+ root->pi[i][2] = strdup(""); // empty document position list
+ }
+
+ while (root->pi[i][j])
+ j++; // find end of instruction list for this target
+ root->pi[i] = realloc(root->pi[i], sizeof(char *) * (j + 3));
+ root->pi[i][j + 2] = realloc(root->pi[i][j + 1], j + 1);
+ strcpy(root->pi[i][j + 2] + j - 1, (root->xml.name) ? ">" : "<");
+ root->pi[i][j + 1] = NULL; // null terminate pi list for this target
+ root->pi[i][j] = s; // set instruction
+}
+
+// called when the parser finds an internal doctype subset
+static short switch_xml_internal_dtd(switch_xml_root_t root, char *s, switch_size_t len)
+{
+ char q, *c, *t, *n = NULL, *v, **ent, **pe;
+ int i, j;
+
+ pe = memcpy(malloc(sizeof(SWITCH_XML_NIL)), SWITCH_XML_NIL, sizeof(SWITCH_XML_NIL));
+
+ for (s[len] = '\0'; s;) {
+ while (*s && *s != '<' && *s != '%')
+ s++; // find next declaration
+
+ if (!*s)
+ break;
+ else if (!strncmp(s, "<!ENTITY", 8)) { // parse entity definitions
+ c = s += strspn(s + 8, SWITCH_XML_WS) + 8; // skip white space separator
+ n = s + strspn(s, SWITCH_XML_WS "%"); // find name
+ *(s = n + strcspn(n, SWITCH_XML_WS)) = ';'; // append ; to name
+
+ v = s + strspn(s + 1, SWITCH_XML_WS) + 1; // find value
+ if ((q = *(v++)) != '"' && q != '\'') { // skip externals
+ s = strchr(s, '>');
+ continue;
+ }
+
+ for (i = 0, ent = (*c == '%') ? pe : root->ent; ent[i]; i++);
+ ent = realloc(ent, (i + 3) * sizeof(char *)); // space for next ent
+ if (*c == '%')
+ pe = ent;
+ else
+ root->ent = ent;
+
+ *(++s) = '\0'; // null terminate name
+ if ((s = strchr(v, q)))
+ *(s++) = '\0'; // null terminate value
+ ent[i + 1] = switch_xml_decode(v, pe, '%'); // set value
+ ent[i + 2] = NULL; // null terminate entity list
+ if (!switch_xml_ent_ok(n, ent[i + 1], ent)) { // circular reference
+ if (ent[i + 1] != v)
+ free(ent[i + 1]);
+ switch_xml_err(root, v, "circular entity declaration &%s", n);
+ break;
+ } else
+ ent[i] = n; // set entity name
+ } else if (!strncmp(s, "<!ATTLIST", 9)) { // parse default attributes
+ t = s + strspn(s + 9, SWITCH_XML_WS) + 9; // skip whitespace separator
+ if (!*t) {
+ switch_xml_err(root, t, "unclosed <!ATTLIST");
+ break;
+ }
+ if (*(s = t + strcspn(t, SWITCH_XML_WS ">")) == '>')
+ continue;
+ else
+ *s = '\0'; // null terminate tag name
+ for (i = 0; root->attr[i] && strcmp(n, root->attr[i][0]); i++);
+
+ while (*(n = ++s + strspn(s, SWITCH_XML_WS)) && *n != '>') {
+ if (*(s = n + strcspn(n, SWITCH_XML_WS)))
+ *s = '\0'; // attr name
+ else {
+ switch_xml_err(root, t, "malformed <!ATTLIST");
+ break;
+ }
+
+ s += strspn(s + 1, SWITCH_XML_WS) + 1; // find next token
+ c = (strncmp(s, "CDATA", 5)) ? "*" : " "; // is it cdata?
+ if (!strncmp(s, "NOTATION", 8))
+ s += strspn(s + 8, SWITCH_XML_WS) + 8;
+ s = (*s == '(') ? strchr(s, ')') : s + strcspn(s, SWITCH_XML_WS);
+ if (!s) {
+ switch_xml_err(root, t, "malformed <!ATTLIST");
+ break;
+ }
+
+ s += strspn(s, SWITCH_XML_WS ")"); // skip white space separator
+ if (!strncmp(s, "#FIXED", 6))
+ s += strspn(s + 6, SWITCH_XML_WS) + 6;
+ if (*s == '#') { // no default value
+ s += strcspn(s, SWITCH_XML_WS ">") - 1;
+ if (*c == ' ')
+ continue; // cdata is default, nothing to do
+ v = NULL;
+ } else if ((*s == '"' || *s == '\'') && // default value
+ (s = strchr(v = s + 1, *s)))
+ *s = '\0';
+ else {
+ switch_xml_err(root, t, "malformed <!ATTLIST");
+ break;
+ }
+
+ if (!root->attr[i]) { // new tag name
+ root->attr = (!i) ? malloc(2 * sizeof(char **))
+ : realloc(root->attr, (i + 2) * sizeof(char **));
+ root->attr[i] = malloc(2 * sizeof(char *));
+ root->attr[i][0] = t; // set tag name
+ root->attr[i][1] = (char *) (root->attr[i + 1] = NULL);
+ }
+
+ for (j = 1; root->attr[i][j]; j += 3); // find end of list
+ root->attr[i] = realloc(root->attr[i], (j + 4) * sizeof(char *));
+
+ root->attr[i][j + 3] = NULL; // null terminate list
+ root->attr[i][j + 2] = c; // is it cdata?
+ root->attr[i][j + 1] = (v) ? switch_xml_decode(v, root->ent, *c)
+ : NULL;
+ root->attr[i][j] = n; // attribute name
+ }
+ } else if (!strncmp(s, "<!--", 4))
+ s = strstr(s + 4, "-->"); // comments
+ else if (!strncmp(s, "<?", 2)) { // processing instructions
+ if ((s = strstr(c = s + 2, "?>")))
+ switch_xml_proc_inst(root, c, s++ - c);
+ } else if (*s == '<')
+ s = strchr(s, '>'); // skip other declarations
+ else if (*(s++) == '%' && !root->standalone)
+ break;
+ }
+
+ free(pe);
+ return !*root->err;
+}
+
+// Converts a UTF-16 string to UTF-8. Returns a new string that must be freed
+// or NULL if no conversion was needed.
+static char *switch_xml_str2utf8(char **s, switch_size_t *len)
+{
+ char *u;
+ switch_size_t l = 0, sl, max = *len;
+ long c, d;
+ int b, be = (**s == '\xFE') ? 1 : (**s == '\xFF') ? 0 : -1;
+
+ if (be == -1)
+ return NULL; // not UTF-16
+
+ u = malloc(max);
+ for (sl = 2; sl < *len - 1; sl += 2) {
+ c = (be) ? (((*s)[sl] & 0xFF) << 8) | ((*s)[sl + 1] & 0xFF) //UTF-16BE
+ : (((*s)[sl + 1] & 0xFF) << 8) | ((*s)[sl] & 0xFF); //UTF-16LE
+ if (c >= 0xD800 && c <= 0xDFFF && (sl += 2) < *len - 1) { // high-half
+ d = (be) ? (((*s)[sl] & 0xFF) << 8) | ((*s)[sl + 1] & 0xFF)
+ : (((*s)[sl + 1] & 0xFF) << 8) | ((*s)[sl] & 0xFF);
+ c = (((c & 0x3FF) << 10) | (d & 0x3FF)) + 0x10000;
+ }
+
+ while (l + 6 > max)
+ u = realloc(u, max += SWITCH_XML_BUFSIZE);
+ if (c < 0x80)
+ u[l++] = (char) c; // US-ASCII subset
+ else { // multi-byte UTF-8 sequence
+ for (b = 0, d = c; d; d /= 2)
+ b++; // bits in c
+ b = (b - 2) / 5; // bytes in payload
+ u[l++] = (char) ((0xFF << (7 - b)) | (c >> (6 * b))); // head
+ while (b)
+ u[l++] = (char) (0x80 | ((c >> (6 * --b)) & 0x3F)); // payload
+ }
+ }
+ return *s = realloc(u, *len = l);
+}
+
+// frees a tag attribute list
+static void switch_xml_free_attr(char **attr)
+{
+ int i = 0;
+ char *m;
+
+ if (!attr || attr == SWITCH_XML_NIL)
+ return; // nothing to free
+ while (attr[i])
+ i += 2; // find end of attribute list
+ m = attr[i + 1]; // list of which names and values are malloced
+ for (i = 0; m[i]; i++) {
+ if (m[i] & SWITCH_XML_NAMEM)
+ free(attr[i * 2]);
+ if (m[i] & SWITCH_XML_TXTM)
+ free(attr[(i * 2) + 1]);
+ }
+ free(m);
+ free(attr);
+}
+
+// parse the given xml string and return an switch_xml structure
+SWITCH_DECLARE(switch_xml_t) switch_xml_parse_str(char *s, switch_size_t len)
+{
+ switch_xml_root_t root = (switch_xml_root_t) switch_xml_new(NULL);
+ char q, e, *d, **attr, **a = NULL; // initialize a to avoid compile warning
+ int l, i, j;
+
+ root->m = s;
+ if (!len)
+ return switch_xml_err(root, s, "root tag missing");
+ root->u = switch_xml_str2utf8(&s, &len); // convert utf-16 to utf-8
+ root->e = (root->s = s) + len; // record start and end of work area
+
+ e = s[len - 1]; // save end char
+ s[len - 1] = '\0'; // turn end char into null terminator
+
+ while (*s && *s != '<')
+ s++; // find first tag
+ if (!*s)
+ return switch_xml_err(root, s, "root tag missing");
+
+ for (;;) {
+ attr = (char **) SWITCH_XML_NIL;
+ d = ++s;
+
+ if (isalpha((int) (*s)) || *s == '_' || *s == ':' || (int8_t) *s < '\0') { // new tag
+ if (!root->cur)
+ return switch_xml_err(root, d, "markup outside of root element");
+
+ s += strcspn(s, SWITCH_XML_WS "/>");
+ while (isspace((int) (*s)))
+ *(s++) = '\0'; // null terminate tag name
+
+ if (*s && *s != '/' && *s != '>') // find tag in default attr list
+ for (i = 0; (a = root->attr[i]) && strcmp(a[0], d); i++);
+
+ for (l = 0; *s && *s != '/' && *s != '>'; l += 2) { // new attrib
+ attr = (l) ? realloc(attr, (l + 4) * sizeof(char *))
+ : malloc(4 * sizeof(char *)); // allocate space
+ attr[l + 3] = (l) ? realloc(attr[l + 1], (l / 2) + 2)
+ : malloc(2); // mem for list of maloced vals
+ strcpy(attr[l + 3] + (l / 2), " "); // value is not malloced
+ attr[l + 2] = NULL; // null terminate list
+ attr[l + 1] = ""; // temporary attribute value
+ attr[l] = s; // set attribute name
+
+ s += strcspn(s, SWITCH_XML_WS "=/>");
+ if (*s == '=' || isspace((int) (*s))) {
+ *(s++) = '\0'; // null terminate tag attribute name
+ q = *(s += strspn(s, SWITCH_XML_WS "="));
+ if (q == '"' || q == '\'') { // attribute value
+ attr[l + 1] = ++s;
+ while (*s && *s != q)
+ s++;
+ if (*s)
+ *(s++) = '\0'; // null terminate attribute val
+ else {
+ switch_xml_free_attr(attr);
+ return switch_xml_err(root, d, "missing %c", q);
+ }
+
+ for (j = 1; a && a[j] && strcmp(a[j], attr[l]); j += 3);
+ attr[l + 1] = switch_xml_decode(attr[l + 1], root->ent, (a && a[j]) ? *a[j + 2] : ' ');
+ if (attr[l + 1] < d || attr[l + 1] > s)
+ attr[l + 3][l / 2] = SWITCH_XML_TXTM; // value malloced
+ }
+ }
+ while (isspace((int) (*s)))
+ s++;
+ }
+
+ if (*s == '/') { // self closing tag
+ *(s++) = '\0';
+ if ((*s && *s != '>') || (!*s && e != '>')) {
+ if (l)
+ switch_xml_free_attr(attr);
+ return switch_xml_err(root, d, "missing >");
+ }
+ switch_xml_open_tag(root, d, attr);
+ switch_xml_close_tag(root, d, s);
+ } else if ((q = *s) == '>' || (!*s && e == '>')) { // open tag
+ *s = '\0'; // temporarily null terminate tag name
+ switch_xml_open_tag(root, d, attr);
+ *s = q;
+ } else {
+ if (l)
+ switch_xml_free_attr(attr);
+ return switch_xml_err(root, d, "missing >");
+ }
+ } else if (*s == '/') { // close tag
+ s += strcspn(d = s + 1, SWITCH_XML_WS ">") + 1;
+ if (!(q = *s) && e != '>')
+ return switch_xml_err(root, d, "missing >");
+ *s = '\0'; // temporarily null terminate tag name
+ if (switch_xml_close_tag(root, d, s))
+ return &root->xml;
+ if (isspace((int) (*s = q)))
+ s += strspn(s, SWITCH_XML_WS);
+ } else if (!strncmp(s, "!--", 3)) { // xml comment
+ if (!(s = strstr(s + 3, "--")) || (*(s += 2) != '>' && *s) || (!*s && e != '>'))
+ return switch_xml_err(root, d, "unclosed <!--");
+ } else if (!strncmp(s, "![CDATA[", 8)) { // cdata
+ if ((s = strstr(s, "]]>")))
+ switch_xml_char_content(root, d + 8, (s += 2) - d - 10, 'c');
+ else
+ return switch_xml_err(root, d, "unclosed <![CDATA[");
+ } else if (!strncmp(s, "!DOCTYPE", 8)) { // dtd
+ for (l = 0; *s && ((!l && *s != '>') || (l && (*s != ']' || *(s + strspn(s + 1, SWITCH_XML_WS) + 1) != '>'))); l = (*s == '[') ? 1 : l)
+ s += strcspn(s + 1, "[]>") + 1;
+ if (!*s && e != '>')
+ return switch_xml_err(root, d, "unclosed <!DOCTYPE");
+ d = (l) ? strchr(d, '[') + 1 : d;
+ if (l && !switch_xml_internal_dtd(root, d, s++ - d))
+ return &root->xml;
+ } else if (*s == '?') { // <?...?> processing instructions
+ do {
+ s = strchr(s, '?');
+ } while (s && *(++s) && *s != '>');
+ if (!s || (!*s && e != '>'))
+ return switch_xml_err(root, d, "unclosed <?");
+ else
+ switch_xml_proc_inst(root, d + 1, s - d - 2);
+ } else
+ return switch_xml_err(root, d, "unexpected <");
+
+ if (!s || !*s)
+ break;
+ *s = '\0';
+ d = ++s;
+ if (*s && *s != '<') { // tag character content
+ while (*s && *s != '<')
+ s++;
+ if (*s)
+ switch_xml_char_content(root, d, s - d, '&');
+ else
+ break;
+ } else if (!*s)
+ break;
+ }
+
+ if (!root->cur)
+ return &root->xml;
+ else if (!root->cur->name)
+ return switch_xml_err(root, d, "root tag missing");
+ else
+ return switch_xml_err(root, d, "unclosed tag <%s>", root->cur->name);
+}
+
+// Wrapper for switch_xml_parse_str() that accepts a file stream. Reads the entire
+// stream into memory and then parses it. For xml files, use switch_xml_parse_file()
+// or switch_xml_parse_fd()
+SWITCH_DECLARE(switch_xml_t) switch_xml_parse_fp(FILE * fp)
+{
+ switch_xml_root_t root;
+ switch_size_t l, len = 0;
+ char *s;
+
+ if (!(s = malloc(SWITCH_XML_BUFSIZE)))
+ return NULL;
+ do {
+ len += (l = fread((s + len), 1, SWITCH_XML_BUFSIZE, fp));
+ if (l == SWITCH_XML_BUFSIZE)
+ s = realloc(s, len + SWITCH_XML_BUFSIZE);
+ } while (s && l == SWITCH_XML_BUFSIZE);
+
+ if (!s)
+ return NULL;
+ root = (switch_xml_root_t) switch_xml_parse_str(s, len);
+ root->dynamic = 1; // so we know to free s in switch_xml_free()
+ return &root->xml;
+}
+
+// A wrapper for switch_xml_parse_str() that accepts a file descriptor. First
+// attempts to mem map the file. Failing that, reads the file into memory.
+// Returns NULL on failure.
+SWITCH_DECLARE(switch_xml_t) switch_xml_parse_fd(int fd)
+{
+ switch_xml_root_t root;
+ struct stat st;
+ switch_size_t l;
+ void *m;
+
+ if (fd < 0)
+ return NULL;
+ fstat(fd, &st);
+
+#ifdef HAVE_MMAP
+ l = (st.st_size + sysconf(_SC_PAGESIZE) - 1) & ~(sysconf(_SC_PAGESIZE) - 1);
+ if ((m = mmap(NULL, l, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0)) != MAP_FAILED) {
+ madvise(m, l, MADV_SEQUENTIAL); // optimize for sequential access
+ root = (switch_xml_root_t) switch_xml_parse_str(m, st.st_size);
+ madvise(m, root->len = l, MADV_NORMAL); // put it back to normal
+ } else { // mmap failed, read file into memory
+#endif // HAVE_MMAP
+ l = read(fd, m = malloc(st.st_size), st.st_size);
+ root = (switch_xml_root_t) switch_xml_parse_str(m, l);
+ root->dynamic = 1; // so we know to free s in switch_xml_free()
+#ifdef HAVE_MMAP
+ }
+#endif // HAVE_MMAP
+ return &root->xml;
+}
+
+static switch_size_t read_line(int fd, char *buf, switch_size_t len)
+{
+ char c, *p;
+ int cur;
+ switch_size_t total = 0;
+
+ p = buf;
+ while (total + sizeof(c) < len && (cur = read(fd, &c, sizeof(c))) > 0) {
+ total += cur;
+ *p++ = c;
+ if (c == '\n') {
+ break;
+ }
+ }
+
+ *p++ = '\0';
+ return total;
+}
+
+static char *expand_vars(char *buf, char *ebuf, switch_size_t elen, switch_size_t *newlen)
+{
+ char *var, *val;
+ char *rp = buf;
+ char *wp = ebuf;
+ char *ep = ebuf + elen - 1;
+
+ if (!(var = strstr(rp, "$${"))) {
+ *newlen = strlen(buf);
+ return buf;
+ }
+
+ while (*rp && wp < ep) {
+
+ if (*rp == '$' && *(rp + 1) == '$' && *(rp + 2) == '{') {
+ char *e = strchr(rp, '}');
+
+ if (e) {
+ rp += 3;
+ var = rp;
+ *e++ = '\0';
+ rp = e;
+ if ((val = switch_core_get_variable(var))) {
+ char *p;
+ for (p = val; p && *p && wp <= ep; p++) {
+ *wp++ = *p;
+ }
+ }
+ }
+
+ }
+
+ *wp++ = *rp++;
+ }
+ *wp++ = '\0';
+ *newlen = strlen(ebuf);
+
+ return ebuf;
+
+}
+
+static int preprocess(const char *file, int write_fd, int rlevel)
+{
+ int read_fd = -1;
+ switch_size_t cur = 0, ml = 0;
+ char *q, *cmd, buf[2048], ebuf[8192];
+
+ if ((read_fd = open(file, O_RDONLY, 0)) < 0) {
+ return read_fd;
+ }
+
+ if (rlevel > 100) {
+ return -1;
+ }
+
+ while ((cur = read_line(read_fd, buf, sizeof(buf))) > 0) {
+ char *arg, *e;
+ char *bp = expand_vars(buf, ebuf, sizeof(ebuf), &cur);
+
+ /* we ignore <include> or </include> for the sake of validators */
+ if (strstr(buf, "<include>") || strstr(buf, "</include>")) {
+ continue;
+ }
+
+ if (ml) {
+ if ((e = strstr(buf, "-->"))) {
+ ml = 0;
+ bp = e + 3;
+ cur = strlen(bp);
+ } else {
+ continue;
+ }
+ }
+
+ if ((cmd = strstr(bp, "<!--#"))) {
+ if(write(write_fd, bp, (unsigned) (cmd - bp)) != (cmd - bp)) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Short write!\n", err);
+ }
+ if ((e = strstr(cmd, "-->"))) {
+ *e = '\0';
+ e += 3;
+ if(write(write_fd, e, (unsigned) strlen(e)) != (unsigned) strlen(e)) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Short write!\n", err);
+ }
+ } else {
+ ml++;
+ }
+
+ cmd += 5;
+ if ((e = strchr(cmd, '\r')) || (e = strchr(cmd, '\n'))) {
+ *e = '\0';
+ }
+
+ if ((arg = strchr(cmd, ' '))) {
+ *arg++ = '\0';
+ if ((q = strchr(arg, '"'))) {
+ char *qq = q + 1;
+
+ if ((qq = strchr(qq, '"'))) {
+ *qq = '\0';
+ arg = q + 1;
+ }
+ }
+
+ if (!strcasecmp(cmd, "set")) {
+ char *name = arg;
+ char *val = strchr(name, '=');
+
+ if (val) {
+ char *ve = val++;
+ while (*val && *val == ' ') {
+ val++;
+ }
+ *ve-- = '\0';
+ while (*ve && *ve == ' ') {
+ *ve-- = '\0';
+ }
+ }
+
+ if (name && val) {
+ switch_core_set_variable(name, val);
+ }
+
+ } else if (!strcasecmp(cmd, "include")) {
+ char *fme = NULL, *ifile = arg;
+
+ if (!switch_is_file_path(ifile)) {
+ fme = switch_mprintf("%s%s%s", SWITCH_GLOBAL_dirs.conf_dir, SWITCH_PATH_SEPARATOR, arg);
+ ifile = fme;
+ }
+ if (preprocess(ifile, write_fd, rlevel + 1) < 0) {
+ fprintf(stderr, "Error including %s (%s)\n", ifile, strerror(errno));
+ }
+ switch_safe_free(fme);
+ } /* else NO OP */
+ }
+
+ continue;
+ }
+
+ if(write(write_fd, bp, (unsigned) cur) != (unsigned) cur) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Short write!\n", err);
+ }
+
+ }
+
+ close(read_fd);
+ return write_fd;
+}
+
+SWITCH_DECLARE(switch_xml_t) switch_xml_parse_file_simple(const char *file)
+{
+ int fd = -1;
+ struct stat st;
+ switch_size_t l;
+ void *m;
+ switch_xml_root_t root;
+
+ if ((fd = open(file, O_RDONLY, 0)) > -1) {
+ fstat(fd, &st);
+ l = read(fd, m = malloc(st.st_size), st.st_size);
+ root = (switch_xml_root_t) switch_xml_parse_str(m, l);
+ root->dynamic = 1;
+ close(fd);
+ return &root->xml;
+ }
+
+ return NULL;
+}
+
+SWITCH_DECLARE(switch_xml_t) switch_xml_parse_file(const char *file)
+{
+ int fd = -1, write_fd = -1;
+ switch_xml_t xml = NULL;
+ char *new_file = NULL;
+ const char *abs;
+
+ if ((abs = strrchr(file, '/')) || (abs = strrchr(file, '\\'))) {
+ abs++;
+ } else {
+ abs = file;
+ }
+
+ if (!(new_file = switch_mprintf("%s%s%s.fsxml", SWITCH_GLOBAL_dirs.log_dir, SWITCH_PATH_SEPARATOR, abs))) {
+ return NULL;
+ }
+
+ if ((write_fd = open(new_file, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR)) < 0) {
+ goto done;
+ }
+
+ if (preprocess(file, write_fd, 0) > -1) {
+ close(write_fd);
+ write_fd = -1;
+ if ((fd = open(new_file, O_RDONLY, 0)) > -1) {
+ if ((xml = switch_xml_parse_fd(fd))) {
+ xml->free_path = new_file;
+ new_file = NULL;
+ }
+ close(fd);
+ fd = -1;
+ }
+ }
+
+ done:
+ if (write_fd > -1) {
+ close(write_fd);
+ }
+ if (fd > -1) {
+ close(fd);
+ }
+ switch_safe_free(new_file);
+ return xml;
+}
+
+
+SWITCH_DECLARE(switch_status_t) switch_xml_locate(const char *section,
+ const char *tag_name,
+ const char *key_name, const char *key_value, switch_xml_t * root, switch_xml_t * node,
+ const char *params)
+{
+ switch_xml_t conf = NULL;
+ switch_xml_t tag = NULL;
+ switch_xml_t xml = NULL;
+ switch_xml_binding_t *binding;
+ uint8_t loops = 0;
+
+ switch_mutex_lock(XML_LOCK);
+
+ for (binding = BINDINGS; binding; binding = binding->next) {
+ switch_xml_section_t sections = switch_xml_parse_section_string(section);
+
+ if (binding->sections && !(sections & binding->sections)) {
+ continue;
+ }
+
+ if ((xml = binding->function(section, tag_name, key_name, key_value, params, binding->user_data))) {
+ const char *err = NULL;
+
+ err = switch_xml_error(xml);
+ if (switch_strlen_zero(err)) {
+ if ((conf = switch_xml_find_child(xml, "section", "name", "result"))) {
+ switch_xml_t p;
+ const char *aname;
+
+ if ((p = switch_xml_child(conf, "result"))) {
+ aname = switch_xml_attr(p, "status");
+ if (aname && !strcasecmp(aname, "not found")) {
+ switch_xml_free(xml);
+ xml = NULL;
+ continue;
+ }
+ }
+ }
+ break;
+ } else {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error[%s]\n", err);
+ switch_xml_free(xml);
+ xml = NULL;
+ }
+ }
+ }
+ switch_mutex_unlock(XML_LOCK);
+
+ for (;;) {
+ if (!xml) {
+ if (!(xml = switch_xml_root())) {
+ *node = NULL;
+ *root = NULL;
+ return SWITCH_STATUS_FALSE;
+ }
+ }
+
+ if ((conf = switch_xml_find_child(xml, "section", "name", section)) && (tag = switch_xml_find_child(conf, tag_name, key_name, key_value))) {
+ *node = tag;
+ *root = xml;
+ return SWITCH_STATUS_SUCCESS;
+ } else {
+ switch_xml_free(xml);
+ xml = NULL;
+ *node = NULL;
+ *root = NULL;
+ if (loops++ > 1) {
+ break;
+ }
+ }
+ }
+
+ return SWITCH_STATUS_FALSE;
+}
+
+SWITCH_DECLARE(switch_status_t) switch_xml_locate_domain(char *domain_name, char *params, switch_xml_t *root, switch_xml_t *domain)
+{
+ char my_params[512];
+ *domain = NULL;
+
+ if (!params) {
+ snprintf(my_params, sizeof(my_params), "domain=%s", domain_name);
+ params = my_params;
+ }
+
+ return switch_xml_locate("directory", "domain", "name", domain_name, root, domain, params);
+}
+
+
+SWITCH_DECLARE(switch_status_t) switch_xml_locate_user(char *user_name, char *domain_name,
+ char *ip,
+ switch_xml_t *root,
+ switch_xml_t *domain,
+ switch_xml_t *user)
+{
+ char params[1024] = "";
+ switch_status_t status;
+ *root = NULL;
+ *user = NULL;
+ *domain = NULL;
+
+ snprintf(params, sizeof(params), "user=%s&domain=%s&ip=%s", switch_str_nil(user_name), switch_str_nil(domain_name), switch_str_nil(ip));
+ if ((status = switch_xml_locate_domain(domain_name, params, root, domain)) != SWITCH_STATUS_SUCCESS) {
+ return status;
+ }
+
+ if (ip) {
+ if ((*user = switch_xml_find_child(*domain, "user", "ip", ip))) {
+ return SWITCH_STATUS_SUCCESS;
+ }
+ }
+
+ if (user_name) {
+ if (!(*user = switch_xml_find_child(*domain, "user", "id", user_name))) {
+ return SWITCH_STATUS_FALSE;
+ }
+ return SWITCH_STATUS_SUCCESS;
+ }
+
+ return SWITCH_STATUS_FALSE;
+}
+
+
+SWITCH_DECLARE(switch_xml_t) switch_xml_root(void)
+{
+ lock_count++;
+ switch_thread_rwlock_rdlock(RWLOCK);
+ return MAIN_XML_ROOT;
+}
+
+SWITCH_DECLARE(switch_xml_t) switch_xml_open_root(uint8_t reload, const char **err)
+{
+ char path_buf[1024];
+ uint8_t hasmain = 0, errcnt = 0;
+ switch_xml_t new_main;
+
+ switch_mutex_lock(XML_LOCK);
+
+ if (MAIN_XML_ROOT) {
+ hasmain++;
+
+ if (!reload) {
+ switch_mutex_unlock(XML_LOCK);
+ return switch_xml_root();
+ }
+ switch_thread_rwlock_wrlock(RWLOCK);
+ }
+
+ snprintf(path_buf, sizeof(path_buf), "%s%s%s", SWITCH_GLOBAL_dirs.conf_dir, SWITCH_PATH_SEPARATOR, "freeswitch.xml");
+ if ((new_main = switch_xml_parse_file(path_buf))) {
+ *err = switch_xml_error(new_main);
+
+ if (!switch_strlen_zero(*err)) {
+ switch_xml_free(new_main);
+ new_main = NULL;
+ errcnt++;
+ } else {
+ switch_xml_t old_root;
+ *err = "Success";
+ old_root = MAIN_XML_ROOT;
+ MAIN_XML_ROOT = new_main;
+ switch_set_flag(MAIN_XML_ROOT, SWITCH_XML_ROOT);
+ switch_xml_free(old_root);
+ }
+ } else {
+ *err = "Cannot Open log directory or XML Root!";
+ errcnt++;
+ }
+
+ if (hasmain) {
+ switch_thread_rwlock_unlock(RWLOCK);
+ }
+ switch_mutex_unlock(XML_LOCK);
+
+ return errcnt == 0 ? switch_xml_root() : NULL;
+}
+
+
+SWITCH_DECLARE(switch_status_t) switch_xml_init(switch_memory_pool_t *pool, const char **err)
+{
+ switch_xml_t xml;
+ XML_MEMORY_POOL = pool;
+ *err = "Success";
+
+ switch_mutex_init(&XML_LOCK, SWITCH_MUTEX_NESTED, XML_MEMORY_POOL);
+ switch_thread_rwlock_create(&RWLOCK, XML_MEMORY_POOL);
+
+ assert(pool != NULL);
+
+ if ((xml = switch_xml_open_root(FALSE, err))) {
+ switch_xml_free(xml);
+ return SWITCH_STATUS_SUCCESS;
+ } else {
+ return SWITCH_STATUS_FALSE;
+ }
+}
+
+SWITCH_DECLARE(switch_status_t) switch_xml_destroy(void)
+{
+ if (MAIN_XML_ROOT) {
+ switch_xml_t xml = MAIN_XML_ROOT;
+ MAIN_XML_ROOT = NULL;
+ switch_xml_free(xml);
+ return SWITCH_STATUS_SUCCESS;
+ }
+
+ return SWITCH_STATUS_FALSE;
+}
+
+SWITCH_DECLARE(switch_xml_t) switch_xml_open_cfg(const char *file_path, switch_xml_t * node, const char *params)
+{
+ switch_xml_t xml = NULL, cfg = NULL;
+
+ *node = NULL;
+
+ assert(MAIN_XML_ROOT != NULL);
+
+ if (switch_xml_locate("configuration", "configuration", "name", file_path, &xml, &cfg, params) == SWITCH_STATUS_SUCCESS) {
+ *node = cfg;
+ }
+
+ return xml;
+
+}
+
+
+// Encodes ampersand sequences appending the results to *dst, reallocating *dst
+// if length excedes max. a is non-zero for attribute encoding. Returns *dst
+static char *switch_xml_ampencode(const char *s, switch_size_t len, char **dst, switch_size_t *dlen, switch_size_t *max, short a)
+{
+ const char *e = NULL;
+
+ if (len) {
+ e = s + len;
+ }
+
+ while (s != e) {
+ while (*dlen + 10 > *max)
+ *dst = realloc(*dst, *max += SWITCH_XML_BUFSIZE);
+
+ switch (*s) {
+ case '\0':
+ return *dst;
+ case '&':
+ *dlen += sprintf(*dst + *dlen, "&");
+ break;
+ case '<':
+ *dlen += sprintf(*dst + *dlen, "<");
+ break;
+ case '>':
+ *dlen += sprintf(*dst + *dlen, ">");
+ break;
+ case '"':
+ *dlen += sprintf(*dst + *dlen, (a) ? """ : "\"");
+ break;
+ case '\n':
+ *dlen += sprintf(*dst + *dlen, (a) ? "
" : "\n");
+ break;
+ case '\t':
+ *dlen += sprintf(*dst + *dlen, (a) ? "	" : "\t");
+ break;
+ case '\r':
+ *dlen += sprintf(*dst + *dlen, "
");
+ break;
+ default:
+ (*dst)[(*dlen)++] = *s;
+ }
+ s++;
+ }
+ return *dst;
+}
+
+#define XML_INDENT " "
+// Recursively converts each tag to xml appending it to *s. Reallocates *s if
+// its length excedes max. start is the location of the previous tag in the
+// parent tag's character content. Returns *s.
+static char *switch_xml_toxml_r(switch_xml_t xml, char **s, switch_size_t *len, switch_size_t *max, switch_size_t start, char ***attr, uint32_t * count)
+{
+ int i, j;
+ char *txt = (xml->parent) ? xml->parent->txt : "";
+ switch_size_t off = 0;
+ uint32_t lcount = 0;
+
+ // parent character content up to this tag
+ *s = switch_xml_ampencode(txt + start, xml->off - start, s, len, max, 0);
+
+ while (*len + strlen(xml->name) + 5 + (strlen(XML_INDENT) * (*count)) + 1 > *max) // reallocate s
+ *s = realloc(*s, *max += SWITCH_XML_BUFSIZE);
+
+ if (*(*s + (*len) - 1) == '>') {
+ *len += sprintf(*s + *len, "\n"); // indent
+ }
+ for (lcount = 0; lcount < *count; lcount++) {
+ *len += sprintf(*s + *len, "%s", XML_INDENT); // indent
+ }
+
+ *len += sprintf(*s + *len, "<%s", xml->name); // open tag
+ for (i = 0; xml->attr[i]; i += 2) { // tag attributes
+ if (switch_xml_attr(xml, xml->attr[i]) != xml->attr[i + 1])
+ continue;
+ while (*len + strlen(xml->attr[i]) + 7 + (strlen(XML_INDENT) * (*count)) > *max) // reallocate s
+ *s = realloc(*s, *max += SWITCH_XML_BUFSIZE);
+
+ *len += sprintf(*s + *len, " %s=\"", xml->attr[i]);
+ switch_xml_ampencode(xml->attr[i + 1], 0, s, len, max, 1);
+ *len += sprintf(*s + *len, "\"");
+ }
+
+ for (i = 0; attr[i] && strcmp(attr[i][0], xml->name); i++);
+ for (j = 1; attr[i] && attr[i][j]; j += 3) { // default attributes
+ if (!attr[i][j + 1] || switch_xml_attr(xml, attr[i][j]) != attr[i][j + 1])
+ continue; // skip duplicates and non-values
+ while (*len + strlen(attr[i][j]) + 8 + (strlen(XML_INDENT) * (*count)) > *max) // reallocate s
+ *s = realloc(*s, *max += SWITCH_XML_BUFSIZE);
+
+ *len += sprintf(*s + *len, " %s=\"", attr[i][j]);
+ switch_xml_ampencode(attr[i][j + 1], 0, s, len, max, 1);
+ *len += sprintf(*s + *len, "\"");
+ }
+
+ *len += sprintf(*s + *len, (xml->child || xml->txt) ? ">" : "/>\n");
+
+ if (xml->child) {
+ (*count)++;
+ *s = switch_xml_toxml_r(xml->child, s, len, max, 0, attr, count);
+
+ } else {
+ *s = switch_xml_ampencode(xml->txt, 0, s, len, max, 0); //data
+ }
+
+ while (*len + strlen(xml->name) + 5 + (strlen(XML_INDENT) * (*count)) > *max) // reallocate s
+ *s = realloc(*s, *max += SWITCH_XML_BUFSIZE);
+
+
+ if (xml->child || xml->txt) {
+ if (*(*s + (*len) - 1) == '\n') {
+ for (lcount = 0; lcount < *count; lcount++) {
+ *len += sprintf(*s + *len, "%s", XML_INDENT); // indent
+ }
+ }
+ *len += sprintf(*s + (*len), "</%s>\n", xml->name); // close tag
+ }
+
+ while (txt[off] && off < xml->off)
+ off++; // make sure off is within bounds
+
+ if (xml->ordered) {
+ return switch_xml_toxml_r(xml->ordered, s, len, max, off, attr, count);
+
+ } else {
+ if (*count > 0)
+ (*count)--;
+ return switch_xml_ampencode(txt + off, 0, s, len, max, 0);
+ }
+}
+
+// converts an switch_xml structure back to xml, returning a string of xml date that
+// must be freed
+SWITCH_DECLARE(char *) switch_xml_toxml(switch_xml_t xml)
+{
+ switch_xml_t p = (xml) ? xml->parent : NULL, o = (xml) ? xml->ordered : NULL;
+ switch_xml_root_t root = (switch_xml_root_t) xml;
+ switch_size_t len = 0, max = SWITCH_XML_BUFSIZE;
+ char *s = strcpy(malloc(max), ""), *t, *n;
+ int i, j, k;
+ uint32_t count = 0;
+
+ if (!xml || !xml->name)
+ return realloc(s, len + 1);
+ while (root->xml.parent)
+ root = (switch_xml_root_t) root->xml.parent; // root tag
+
+ for (i = 0; !p && root->pi[i]; i++) { // pre-root processing instructions
+ for (k = 2; root->pi[i][k - 1]; k++);
+ for (j = 1; (n = root->pi[i][j]); j++) {
+ if (root->pi[i][k][j - 1] == '>')
+ continue; // not pre-root
+ while (len + strlen(t = root->pi[i][0]) + strlen(n) + 7 > max)
+ s = realloc(s, max += SWITCH_XML_BUFSIZE);
+ len += sprintf(s + len, "<?%s%s%s?>", t, *n ? " " : "", n);
+ }
+ }
+
+ xml->parent = xml->ordered = NULL;
+ s = switch_xml_toxml_r(xml, &s, &len, &max, 0, root->attr, &count);
+ xml->parent = p;
+ xml->ordered = o;
+
+ for (i = 0; !p && root->pi[i]; i++) { // post-root processing instructions
+ for (k = 2; root->pi[i][k - 1]; k++);
+ for (j = 1; (n = root->pi[i][j]); j++) {
+ if (root->pi[i][k][j - 1] == '<')
+ continue; // not post-root
+ while (len + strlen(t = root->pi[i][0]) + strlen(n) + 7 > max)
+ s = realloc(s, max += SWITCH_XML_BUFSIZE);
+ len += sprintf(s + len, "\n<?%s%s%s?>", t, *n ? " " : "", n);
+ }
+ }
+ return realloc(s, len + 1);
+}
+
+// free the memory allocated for the switch_xml structure
+SWITCH_DECLARE(void) switch_xml_free(switch_xml_t xml)
+{
+ switch_xml_root_t root = (switch_xml_root_t) xml;
+ int i, j;
+ char **a, *s;
+
+
+ if (!xml)
+ return;
+
+ if (switch_test_flag(xml, SWITCH_XML_ROOT)) {
+ if (lock_count > 0) {
+ switch_thread_rwlock_unlock(RWLOCK);
+ lock_count--;
+ }
+ }
+
+ if (xml == MAIN_XML_ROOT) {
+ return;
+ }
+
+ if (xml->free_path) {
+ unlink(xml->free_path);
+ switch_safe_free(xml->free_path);
+ }
+
+ switch_xml_free(xml->child);
+ switch_xml_free(xml->ordered);
+
+ if (!xml->parent) { // free root tag allocations
+ for (i = 10; root->ent[i]; i += 2) // 0 - 9 are default entites (<>&"')
+ if ((s = root->ent[i + 1]) < root->s || s > root->e)
+ free(s);
+ free(root->ent); // free list of general entities
+
+ for (i = 0; (a = root->attr[i]); i++) {
+ for (j = 1; a[j++]; j += 2) // free malloced attribute values
+ if (a[j] && (a[j] < root->s || a[j] > root->e))
+ free(a[j]);
+ free(a);
+ }
+ if (root->attr[0])
+ free(root->attr); // free default attribute list
+
+ for (i = 0; root->pi[i]; i++) {
+ for (j = 1; root->pi[i][j]; j++);
+ free(root->pi[i][j + 1]);
+ free(root->pi[i]);
+ }
+ if (root->pi[0])
+ free(root->pi); // free processing instructions
+
+ if (root->dynamic == 1)
+ free(root->m); // malloced xml data
+#ifdef HAVE_MMAP
+ else if (root->len)
+ munmap(root->m, root->len); // mem mapped xml data
+#endif // HAVE_MMAP
+ if (root->u)
+ free(root->u); // utf8 conversion
+ }
+
+ switch_xml_free_attr(xml->attr); // tag attributes
+ if ((xml->flags & SWITCH_XML_TXTM))
+ free(xml->txt); // character content
+ if ((xml->flags & SWITCH_XML_NAMEM))
+ free(xml->name); // tag name
+ free(xml);
+}
+
+// return parser error message or empty string if none
+SWITCH_DECLARE(const char *) switch_xml_error(switch_xml_t xml)
+{
+ while (xml && xml->parent)
+ xml = xml->parent; // find root tag
+ return (xml) ? ((switch_xml_root_t) xml)->err : "";
+}
+
+// returns a new empty switch_xml structure with the given root tag name
+SWITCH_DECLARE(switch_xml_t) switch_xml_new(const char *name)
+{
+ static char *ent[] = { "lt;", "<", "gt;", ">", "quot;", """,
+ "apos;", "'", "amp;", "&", NULL
+ };
+ switch_xml_root_t root = (switch_xml_root_t) memset(malloc(sizeof(struct switch_xml_root)),
+ '\0', sizeof(struct switch_xml_root));
+ root->xml.name = (char *) name;
+ root->cur = &root->xml;
+ strcpy(root->err, root->xml.txt = "");
+ root->ent = memcpy(malloc(sizeof(ent)), ent, sizeof(ent));
+ root->attr = root->pi = (char ***) (root->xml.attr = SWITCH_XML_NIL);
+ return &root->xml;
+}
+
+// inserts an existing tag into an switch_xml structure
+SWITCH_DECLARE(switch_xml_t) switch_xml_insert(switch_xml_t xml, switch_xml_t dest, switch_size_t off)
+{
+ switch_xml_t cur, prev, head;
+
+ xml->next = xml->sibling = xml->ordered = NULL;
+ xml->off = off;
+ xml->parent = dest;
+
+ if ((head = dest->child)) { // already have sub tags
+ if (head->off <= off) { // not first subtag
+ for (cur = head; cur->ordered && cur->ordered->off <= off; cur = cur->ordered);
+ xml->ordered = cur->ordered;
+ cur->ordered = xml;
+ } else { // first subtag
+ xml->ordered = head;
+ dest->child = xml;
+ }
+
+ for (cur = head, prev = NULL; cur && strcmp(cur->name, xml->name); prev = cur, cur = cur->sibling); // find tag type
+ if (cur && cur->off <= off) { // not first of type
+ while (cur->next && cur->next->off <= off)
+ cur = cur->next;
+ xml->next = cur->next;
+ cur->next = xml;
+ } else { // first tag of this type
+ if (prev && cur)
+ prev->sibling = cur->sibling; // remove old first
+ xml->next = cur; // old first tag is now next
+ for (cur = head, prev = NULL; cur && cur->off <= off; prev = cur, cur = cur->sibling); // new sibling insert point
+ xml->sibling = cur;
+ if (prev)
+ prev->sibling = xml;
+ }
+ } else
+ dest->child = xml; // only sub tag
+
+ return xml;
+}
+
+// Adds a child tag. off is the offset of the child tag relative to the start
+// of the parent tag's character content. Returns the child tag
+SWITCH_DECLARE(switch_xml_t) switch_xml_add_child(switch_xml_t xml, const char *name, switch_size_t off)
+{
+ switch_xml_t child;
+
+ if (!xml)
+ return NULL;
+ child = (switch_xml_t) memset(malloc(sizeof(struct switch_xml)), '\0', sizeof(struct switch_xml));
+ child->name = (char *) name;
+ child->attr = SWITCH_XML_NIL;
+ child->off = off;
+ child->parent = xml;
+ child->txt = "";
+
+ return switch_xml_insert(child, xml, off);
+}
+
+// sets the character content for the given tag and returns the tag
+SWITCH_DECLARE(switch_xml_t) switch_xml_set_txt(switch_xml_t xml, const char *txt)
+{
+ if (!xml)
+ return NULL;
+ if (xml->flags & SWITCH_XML_TXTM)
+ free(xml->txt); // existing txt was malloced
+ xml->flags &= ~SWITCH_XML_TXTM;
+ xml->txt = (char *) txt;
+ return xml;
+}
+
+// Sets the given tag attribute or adds a new attribute if not found. A value
+// of NULL will remove the specified attribute. Returns the tag given
+SWITCH_DECLARE(switch_xml_t) switch_xml_set_attr(switch_xml_t xml, const char *name, const char *value)
+{
+ int l = 0, c;
+
+ if (!xml)
+ return NULL;
+ while (xml->attr[l] && strcmp(xml->attr[l], name))
+ l += 2;
+ if (!xml->attr[l]) { // not found, add as new attribute
+ if (!value)
+ return xml; // nothing to do
+ if (xml->attr == SWITCH_XML_NIL) { // first attribute
+ xml->attr = malloc(4 * sizeof(char *));
+ xml->attr[1] = strdup(""); // empty list of malloced names/vals
+ } else
+ xml->attr = realloc(xml->attr, (l + 4) * sizeof(char *));
+
+ xml->attr[l] = (char *) name; // set attribute name
+ xml->attr[l + 2] = NULL; // null terminate attribute list
+ xml->attr[l + 3] = realloc(xml->attr[l + 1], (c = (int) strlen(xml->attr[l + 1])) + 2);
+ strcpy(xml->attr[l + 3] + c, " "); // set name/value as not malloced
+ if (xml->flags & SWITCH_XML_DUP)
+ xml->attr[l + 3][c] = SWITCH_XML_NAMEM;
+ } else if (xml->flags & SWITCH_XML_DUP)
+ free((char *) name); // name was strduped
+
+ for (c = l; xml->attr[c]; c += 2); // find end of attribute list
+ if (xml->attr[c + 1][l / 2] & SWITCH_XML_TXTM)
+ free(xml->attr[l + 1]); //old val
+ if (xml->flags & SWITCH_XML_DUP)
+ xml->attr[c + 1][l / 2] |= SWITCH_XML_TXTM;
+ else
+ xml->attr[c + 1][l / 2] &= ~SWITCH_XML_TXTM;
+
+ if (value)
+ xml->attr[l + 1] = (char *) value; // set attribute value
+ else { // remove attribute
+ if (xml->attr[c + 1][l / 2] & SWITCH_XML_NAMEM)
+ free(xml->attr[l]);
+ memmove(xml->attr + l, xml->attr + l + 2, (c - l + 2) * sizeof(char *));
+ xml->attr = realloc(xml->attr, (c + 2) * sizeof(char *));
+ memmove(xml->attr[c + 1] + (l / 2), xml->attr[c + 1] + (l / 2) + 1, (c / 2) - (l / 2)); // fix list of which name/vals are malloced
+ }
+ xml->flags &= ~SWITCH_XML_DUP; // clear strdup() flag
+
+ return xml;
+}
+
+// sets a flag for the given tag and returns the tag
+SWITCH_DECLARE(switch_xml_t) switch_xml_set_flag(switch_xml_t xml, switch_xml_flag_t flag)
+{
+ if (xml)
+ xml->flags |= flag;
+ return xml;
+}
+
+// removes a tag along with its subtags without freeing its memory
+SWITCH_DECLARE(switch_xml_t) switch_xml_cut(switch_xml_t xml)
+{
+ switch_xml_t cur;
+
+ if (!xml)
+ return NULL; // nothing to do
+ if (xml->next)
+ xml->next->sibling = xml->sibling; // patch sibling list
+
+ if (xml->parent) { // not root tag
+ cur = xml->parent->child; // find head of subtag list
+ if (cur == xml)
+ xml->parent->child = xml->ordered; // first subtag
+ else { // not first subtag
+ while (cur->ordered != xml)
+ cur = cur->ordered;
+ cur->ordered = cur->ordered->ordered; // patch ordered list
+
+ cur = xml->parent->child; // go back to head of subtag list
+ if (strcmp(cur->name, xml->name)) { // not in first sibling list
+ while (strcmp(cur->sibling->name, xml->name))
+ cur = cur->sibling;
+ if (cur->sibling == xml) { // first of a sibling list
+ cur->sibling = (xml->next) ? xml->next : cur->sibling->sibling;
+ } else
+ cur = cur->sibling; // not first of a sibling list
+ }
+
+ while (cur->next && cur->next != xml)
+ cur = cur->next;
+ if (cur->next)
+ cur->next = cur->next->next; // patch next list
+ }
+ }
+ xml->ordered = xml->sibling = xml->next = NULL; // prevent switch_xml_free() from clobbering ordered list
+ return xml;
+}
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4 expandtab:
+ */
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