| /* ==================================================================== |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2001-2004 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Apache" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| * Originally developed by Aaron Bannert and Justin Erenkrantz, eBuilt. |
| */ |
| |
| #include <apr_file_io.h> |
| #include <apr_xml.h> |
| #include <apr_strings.h> |
| |
| #if APR_HAVE_STRINGS_H |
| #include <strings.h> /* strncasecmp */ |
| #endif |
| #if APR_HAVE_STRING_H |
| #include <string.h> /* strncasecmp */ |
| #endif |
| #if APR_HAVE_STDLIB_H |
| #include <stdlib.h> /* strtol */ |
| #endif |
| |
| #include "config.h" |
| #include "flood_config.h" |
| |
| extern apr_file_t *local_stdout, *local_stderr; |
| |
| config_t *parse_config(apr_file_t *in, apr_pool_t *pool) |
| { |
| apr_xml_parser *parser; |
| char buf[FLOOD_IOBUF], errorbuf[FLOOD_IOBUF]; |
| apr_xml_doc *pdoc; |
| config_t *config; |
| apr_status_t rv = APR_SUCCESS; |
| apr_size_t buflen = 0; |
| |
| #ifdef CONFIG_DEBUG |
| apr_file_printf(local_stdout, "entering parse_config...\n"); |
| #endif /* CONFIG_DEBUG */ |
| |
| /* create the parser from the pool */ |
| parser = apr_xml_parser_create(pool); |
| |
| while (rv == APR_SUCCESS) { |
| buflen = FLOOD_IOBUF; |
| rv = apr_file_read(in, buf, &buflen); |
| |
| if (rv == APR_EOF) |
| break; |
| else if (rv != APR_SUCCESS) { |
| apr_file_printf(local_stderr, "Error reading XML.\n"); |
| exit(-1); |
| } |
| |
| #ifdef CONFIG_DEBUG |
| apr_file_printf(local_stdout, "Parsing: '%s'\n", buf); |
| #endif /* CONFIG_DEBUG */ |
| |
| if (apr_xml_parser_feed(parser, buf, buflen) != APR_SUCCESS) { |
| apr_file_printf(local_stderr, "Error parsing XML: %s\n", |
| apr_xml_parser_geterror(parser, errorbuf, |
| FLOOD_IOBUF)); |
| exit(-1); |
| } |
| } |
| |
| if (apr_xml_parser_done(parser, &pdoc) != APR_SUCCESS) { |
| apr_file_printf(local_stderr, "Error after parsing XML: %s\n", |
| apr_xml_parser_geterror(parser, (char*) &errorbuf, |
| FLOOD_IOBUF)); |
| exit(-1); |
| } |
| |
| /* FIXME: Actually assign the parsed XML config into 'config' */ |
| config = apr_pcalloc(pool, sizeof(config_t)); |
| config->pool = pool; |
| config->doc = pdoc; |
| |
| return config; |
| } |
| |
| /** |
| * Simply returns the root of the parsed XML document. |
| */ |
| apr_status_t retrieve_root_xml_elem(struct apr_xml_elem **elem, |
| const config_t *config) |
| { |
| *elem = config->doc->root; |
| return APR_SUCCESS; |
| } |
| |
| /** |
| * Count the number of children of the given element that have |
| * the name "name" and return it. |
| */ |
| int count_xml_elem_child(struct apr_xml_elem *elem, const char *name) |
| { |
| struct apr_xml_elem *p; |
| int count = 0; |
| |
| for (p = elem->first_child; p; p = p->next) { |
| if (strncasecmp(p->name, name, FLOOD_STRLEN_MAX) == 0) { |
| count++; |
| } |
| } |
| return count; |
| } |
| |
| /** |
| * Search for the first child of the given top_elem that has |
| * the given name. Return APR_SUCCESS and set elem to the found |
| * element if successful, or APR_EGENERAL otherwise. |
| */ |
| apr_status_t retrieve_xml_elem_child( |
| struct apr_xml_elem **elem, |
| const struct apr_xml_elem *top_elem, |
| const char *name) |
| { |
| struct apr_xml_elem *p; |
| |
| for (p = top_elem->first_child; p; p = p->next) { |
| if (strncasecmp(p->name, name, FLOOD_STRLEN_MAX) == 0) { |
| *elem = p; |
| return APR_SUCCESS; |
| } |
| } |
| return APR_EGENERAL; |
| } |
| |
| /** |
| * Searches the configuration (starting at 'top_elem') for a particular node |
| * at the given path with a <name> of 'name'. If found |
| * the node is returned in the 'elem' parameter, and the function |
| * returns APR_SUCCESS. Otherwise APR_EGENERAL is returned. |
| */ |
| apr_status_t retrieve_xml_elem_with_childmatch(struct apr_xml_elem **elem, |
| struct apr_xml_elem *top_elem, |
| char *path, |
| const char *child_name, |
| const char *child_val) |
| { |
| char *pc, *last; /* path component, apr_strtok state */ |
| const char *lc; /* last path component */ |
| struct apr_xml_elem *node, *tmpnode; |
| apr_status_t stat; |
| char *delim = XML_ELEM_DELIM; |
| |
| /* start the search from the given top element */ |
| node = top_elem; |
| |
| /* break the path into the components, find the first match */ |
| for (pc = apr_strtok(path, delim, &last); |
| pc; |
| pc = apr_strtok(NULL, delim, &last)) { |
| if ((stat = retrieve_xml_elem_child(&tmpnode, node, pc)) != APR_SUCCESS) |
| return stat; /* it'll return here if it wasn't found */ |
| node = tmpnode; /* keep walking down the path */ |
| } |
| |
| /* save the name of this node */ |
| lc = node->name; |
| |
| /* search each sibling for a child node called "name" with value 'name' */ |
| for (tmpnode = node; tmpnode; tmpnode = tmpnode->next) { |
| if ((strncasecmp(tmpnode->name, lc, FLOOD_STRLEN_MAX) == 0) && |
| tmpnode->first_child && |
| tmpnode->first_child->name && |
| (strncasecmp( |
| tmpnode->first_child->name, |
| child_name, FLOOD_STRLEN_MAX) == 0) && |
| (strncmp( |
| tmpnode->first_child->first_cdata.first->text, /* XXX: only checks first cdata. */ |
| child_val, FLOOD_STRLEN_MAX) == 0)) |
| { |
| /* we found the node */ |
| *elem = tmpnode; |
| return APR_SUCCESS; |
| } |
| } |
| return APR_EGENERAL; |
| } |
