Merged the hostap_2.6 updates, and the Leap of Faith work, from the hostap_update...
[mech_eap.git] / libeap / src / utils / xml-utils.c
diff --git a/libeap/src/utils/xml-utils.c b/libeap/src/utils/xml-utils.c
new file mode 100644 (file)
index 0000000..4916d29
--- /dev/null
@@ -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;
+}