Cumulative patch from commit 39b420f7b12b152f879d1bb8a5267b9a838e04dc
39b420f HS 2.0R2: Add parse_cert command for debugging purposes
c0d701a HS 2.0R2: Add OSU client implementation
d2bb2b4 Add os_file_exists()
1cb3eda HS 2.0R2: Add wrapper functions for libcurl
2cb8f96 HS 2.0R2: Add wrapper functions for libxml2
da4ec2c HS 2.0R2: Add wrapper for system browser
db3ca20 HS 2.0R2: Add wrapper for wpadebug browser on Android
2a10e57 HS 2.0R2: Add wrapper for Android browser for user interaction
d0b79d7 HS 2.0R2: Add wrapper functions for WebKit
91728f2 Add wpa_ctrl helper functions for upper level functionality
b4c26ef Clean up hostapd_config_fill() parsers
b2e32cd Fix memory leaks on wpa_config_parse_string() error paths
a0b728b Simplify hostapd_config_fill() error reporting
599f40d Remove extra indentation level from hostapd_config_fill()
Change-Id: I17b7089210da7e083c9fe5814e79cef99bbee80b
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/src/utils/xml-utils.c b/src/utils/xml-utils.c
new file mode 100644
index 0000000..4916d29
--- /dev/null
+++ b/src/utils/xml-utils.c
@@ -0,0 +1,471 @@
+/*
+ * Generic XML helper functions
+ * Copyright (c) 2012-2013, Qualcomm Atheros, Inc.
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "xml-utils.h"
+
+
+static xml_node_t * get_node_uri_iter(struct xml_node_ctx *ctx,
+ xml_node_t *root, char *uri)
+{
+ char *end;
+ xml_node_t *node;
+ const char *name;
+
+ end = strchr(uri, '/');
+ if (end)
+ *end++ = '\0';
+
+ node = root;
+ xml_node_for_each_sibling(ctx, node) {
+ xml_node_for_each_check(ctx, node);
+ name = xml_node_get_localname(ctx, node);
+ if (strcasecmp(name, uri) == 0)
+ break;
+ }
+
+ if (node == NULL)
+ return NULL;
+
+ if (end) {
+ return get_node_uri_iter(ctx, xml_node_first_child(ctx, node),
+ end);
+ }
+
+ return node;
+}
+
+
+xml_node_t * get_node_uri(struct xml_node_ctx *ctx, xml_node_t *root,
+ const char *uri)
+{
+ char *search;
+ xml_node_t *node;
+
+ search = os_strdup(uri);
+ if (search == NULL)
+ return NULL;
+
+ node = get_node_uri_iter(ctx, root, search);
+
+ os_free(search);
+ return node;
+}
+
+
+static xml_node_t * get_node_iter(struct xml_node_ctx *ctx,
+ xml_node_t *root, const char *path)
+{
+ char *end;
+ xml_node_t *node;
+ const char *name;
+
+ end = os_strchr(path, '/');
+ if (end)
+ *end++ = '\0';
+
+ xml_node_for_each_child(ctx, node, root) {
+ xml_node_for_each_check(ctx, node);
+ name = xml_node_get_localname(ctx, node);
+ if (os_strcasecmp(name, path) == 0)
+ break;
+ }
+
+ if (node == NULL)
+ return NULL;
+ if (end)
+ return get_node_iter(ctx, node, end);
+ return node;
+}
+
+
+xml_node_t * get_node(struct xml_node_ctx *ctx, xml_node_t *root,
+ const char *path)
+{
+ char *search;
+ xml_node_t *node;
+
+ search = os_strdup(path);
+ if (search == NULL)
+ return NULL;
+
+ node = get_node_iter(ctx, root, search);
+
+ os_free(search);
+ return node;
+}
+
+
+xml_node_t * get_child_node(struct xml_node_ctx *ctx, xml_node_t *root,
+ const char *path)
+{
+ xml_node_t *node;
+ xml_node_t *match;
+
+ xml_node_for_each_child(ctx, node, root) {
+ xml_node_for_each_check(ctx, node);
+ match = get_node(ctx, node, path);
+ if (match)
+ return match;
+ }
+
+ return NULL;
+}
+
+
+xml_node_t * node_from_file(struct xml_node_ctx *ctx, const char *name)
+{
+ xml_node_t *node;
+ char *buf, *buf2, *start;
+ size_t len;
+
+ buf = os_readfile(name, &len);
+ if (buf == NULL)
+ return NULL;
+ buf2 = os_realloc(buf, len + 1);
+ if (buf2 == NULL) {
+ os_free(buf);
+ return NULL;
+ }
+ buf = buf2;
+ buf[len] = '\0';
+
+ start = os_strstr(buf, "<!DOCTYPE ");
+ if (start) {
+ char *pos = start + 1;
+ int count = 1;
+ while (*pos) {
+ if (*pos == '<')
+ count++;
+ else if (*pos == '>') {
+ count--;
+ if (count == 0) {
+ pos++;
+ break;
+ }
+ }
+ pos++;
+ }
+ if (count == 0) {
+ /* Remove DOCTYPE to allow the file to be parsed */
+ os_memset(start, ' ', pos - start);
+ }
+ }
+
+ node = xml_node_from_buf(ctx, buf);
+ os_free(buf);
+
+ return node;
+}
+
+
+int node_to_file(struct xml_node_ctx *ctx, const char *fname, xml_node_t *node)
+{
+ FILE *f;
+ char *str;
+
+ str = xml_node_to_str(ctx, node);
+ if (str == NULL)
+ return -1;
+
+ f = fopen(fname, "w");
+ if (!f) {
+ os_free(str);
+ return -1;
+ }
+
+ fprintf(f, "%s\n", str);
+ os_free(str);
+ fclose(f);
+
+ return 0;
+}
+
+
+static char * get_val(struct xml_node_ctx *ctx, xml_node_t *node)
+{
+ char *val, *pos;
+
+ val = xml_node_get_text(ctx, node);
+ if (val == NULL)
+ return NULL;
+ pos = val;
+ while (*pos) {
+ if (*pos != ' ' && *pos != '\t' && *pos != '\r' && *pos != '\n')
+ return val;
+ pos++;
+ }
+
+ return NULL;
+}
+
+
+static char * add_path(const char *prev, const char *leaf)
+{
+ size_t len;
+ char *new_uri;
+
+ if (prev == NULL)
+ return NULL;
+
+ len = os_strlen(prev) + 1 + os_strlen(leaf) + 1;
+ new_uri = os_malloc(len);
+ if (new_uri)
+ os_snprintf(new_uri, len, "%s/%s", prev, leaf);
+
+ return new_uri;
+}
+
+
+static void node_to_tnds(struct xml_node_ctx *ctx, xml_node_t *out,
+ xml_node_t *in, const char *uri)
+{
+ xml_node_t *node;
+ xml_node_t *tnds;
+ const char *name;
+ char *val;
+ char *new_uri;
+
+ xml_node_for_each_child(ctx, node, in) {
+ xml_node_for_each_check(ctx, node);
+ name = xml_node_get_localname(ctx, node);
+
+ tnds = xml_node_create(ctx, out, NULL, "Node");
+ if (tnds == NULL)
+ return;
+ xml_node_create_text(ctx, tnds, NULL, "NodeName", name);
+
+ if (uri)
+ xml_node_create_text(ctx, tnds, NULL, "Path", uri);
+
+ val = get_val(ctx, node);
+ if (val) {
+ xml_node_create_text(ctx, tnds, NULL, "Value", val);
+ xml_node_get_text_free(ctx, val);
+ }
+
+ new_uri = add_path(uri, name);
+ node_to_tnds(ctx, new_uri ? out : tnds, node, new_uri);
+ os_free(new_uri);
+ }
+}
+
+
+static int add_ddfname(struct xml_node_ctx *ctx, xml_node_t *parent,
+ const char *urn)
+{
+ xml_node_t *node;
+
+ node = xml_node_create(ctx, parent, NULL, "RTProperties");
+ if (node == NULL)
+ return -1;
+ node = xml_node_create(ctx, node, NULL, "Type");
+ if (node == NULL)
+ return -1;
+ xml_node_create_text(ctx, node, NULL, "DDFName", urn);
+ return 0;
+}
+
+
+xml_node_t * mo_to_tnds(struct xml_node_ctx *ctx, xml_node_t *mo,
+ int use_path, const char *urn, const char *ns_uri)
+{
+ xml_node_t *root;
+ xml_node_t *node;
+ const char *name;
+
+ root = xml_node_create_root(ctx, ns_uri, NULL, NULL, "MgmtTree");
+ if (root == NULL)
+ return NULL;
+
+ xml_node_create_text(ctx, root, NULL, "VerDTD", "1.2");
+
+ name = xml_node_get_localname(ctx, mo);
+
+ node = xml_node_create(ctx, root, NULL, "Node");
+ if (node == NULL)
+ goto fail;
+ xml_node_create_text(ctx, node, NULL, "NodeName", name);
+ if (urn)
+ add_ddfname(ctx, node, urn);
+
+ node_to_tnds(ctx, use_path ? root : node, mo, use_path ? name : NULL);
+
+ return root;
+
+fail:
+ xml_node_free(ctx, root);
+ return NULL;
+}
+
+
+static xml_node_t * get_first_child_node(struct xml_node_ctx *ctx,
+ xml_node_t *node,
+ const char *name)
+{
+ const char *lname;
+ xml_node_t *child;
+
+ xml_node_for_each_child(ctx, child, node) {
+ xml_node_for_each_check(ctx, child);
+ lname = xml_node_get_localname(ctx, child);
+ if (os_strcasecmp(lname, name) == 0)
+ return child;
+ }
+
+ return NULL;
+}
+
+
+static char * get_node_text(struct xml_node_ctx *ctx, xml_node_t *node,
+ const char *node_name)
+{
+ node = get_first_child_node(ctx, node, node_name);
+ if (node == NULL)
+ return NULL;
+ return xml_node_get_text(ctx, node);
+}
+
+
+static xml_node_t * add_mo_node(struct xml_node_ctx *ctx, xml_node_t *root,
+ xml_node_t *node, const char *uri)
+{
+ char *nodename, *value, *path;
+ xml_node_t *parent;
+
+ nodename = get_node_text(ctx, node, "NodeName");
+ if (nodename == NULL)
+ return NULL;
+ value = get_node_text(ctx, node, "Value");
+
+ if (root == NULL) {
+ root = xml_node_create_root(ctx, NULL, NULL, NULL,
+ nodename);
+ if (root && value)
+ xml_node_set_text(ctx, root, value);
+ } else {
+ if (uri == NULL) {
+ xml_node_get_text_free(ctx, nodename);
+ xml_node_get_text_free(ctx, value);
+ return NULL;
+ }
+ path = get_node_text(ctx, node, "Path");
+ if (path)
+ uri = path;
+ parent = get_node_uri(ctx, root, uri);
+ xml_node_get_text_free(ctx, path);
+ if (parent == NULL) {
+ printf("Could not find URI '%s'\n", uri);
+ xml_node_get_text_free(ctx, nodename);
+ xml_node_get_text_free(ctx, value);
+ return NULL;
+ }
+ if (value)
+ xml_node_create_text(ctx, parent, NULL, nodename,
+ value);
+ else
+ xml_node_create(ctx, parent, NULL, nodename);
+ }
+
+ xml_node_get_text_free(ctx, nodename);
+ xml_node_get_text_free(ctx, value);
+
+ return root;
+}
+
+
+static xml_node_t * tnds_to_mo_iter(struct xml_node_ctx *ctx, xml_node_t *root,
+ xml_node_t *node, const char *uri)
+{
+ xml_node_t *child;
+ const char *name;
+ char *nodename;
+
+ xml_node_for_each_sibling(ctx, node) {
+ xml_node_for_each_check(ctx, node);
+
+ nodename = get_node_text(ctx, node, "NodeName");
+ if (nodename == NULL)
+ return NULL;
+
+ name = xml_node_get_localname(ctx, node);
+ if (strcmp(name, "Node") == 0) {
+ if (root && !uri) {
+ printf("Invalid TNDS tree structure - "
+ "multiple top level nodes\n");
+ xml_node_get_text_free(ctx, nodename);
+ return NULL;
+ }
+ root = add_mo_node(ctx, root, node, uri);
+ }
+
+ child = get_first_child_node(ctx, node, "Node");
+ if (child) {
+ if (uri == NULL)
+ tnds_to_mo_iter(ctx, root, child, nodename);
+ else {
+ char *new_uri;
+ new_uri = add_path(uri, nodename);
+ tnds_to_mo_iter(ctx, root, child, new_uri);
+ os_free(new_uri);
+ }
+ }
+ xml_node_get_text_free(ctx, nodename);
+ }
+
+ return root;
+}
+
+
+xml_node_t * tnds_to_mo(struct xml_node_ctx *ctx, xml_node_t *tnds)
+{
+ const char *name;
+ xml_node_t *node;
+
+ name = xml_node_get_localname(ctx, tnds);
+ if (name == NULL || os_strcmp(name, "MgmtTree") != 0)
+ return NULL;
+
+ node = get_first_child_node(ctx, tnds, "Node");
+ if (!node)
+ return NULL;
+ return tnds_to_mo_iter(ctx, NULL, node, NULL);
+}
+
+
+xml_node_t * soap_build_envelope(struct xml_node_ctx *ctx, xml_node_t *node)
+{
+ xml_node_t *envelope, *body;
+ xml_namespace_t *ns;
+
+ envelope = xml_node_create_root(
+ ctx, "http://www.w3.org/2003/05/soap-envelope", "soap12", &ns,
+ "Envelope");
+ if (envelope == NULL)
+ return NULL;
+ body = xml_node_create(ctx, envelope, ns, "Body");
+ xml_node_add_child(ctx, body, node);
+ return envelope;
+}
+
+
+xml_node_t * soap_get_body(struct xml_node_ctx *ctx, xml_node_t *soap)
+{
+ xml_node_t *body, *child;
+
+ body = get_node_uri(ctx, soap, "Envelope/Body");
+ if (body == NULL)
+ return NULL;
+ xml_node_for_each_child(ctx, child, body) {
+ xml_node_for_each_check(ctx, child);
+ return child;
+ }
+ return NULL;
+}