-const char urlmatch_rcs[] = "$Id: urlmatch.c,v 1.45 2008/06/21 21:19:18 fabiankeil Exp $";
+const char urlmatch_rcs[] = "$Id: urlmatch.c,v 1.60 2011/04/19 13:00:47 fabiankeil Exp $";
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/urlmatch.c,v $
* or write to the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
- * Revisions :
- * $Log: urlmatch.c,v $
- * Revision 1.45 2008/06/21 21:19:18 fabiankeil
- * Silence bogus compiler warning.
- *
- * Revision 1.44 2008/05/04 16:18:32 fabiankeil
- * Provide parse_http_url() with a third parameter to specify
- * whether or not URLs without protocol are acceptable.
- *
- * Revision 1.43 2008/05/04 13:30:55 fabiankeil
- * Streamline parse_http_url()'s prototype.
- *
- * Revision 1.42 2008/05/04 13:24:16 fabiankeil
- * If the method isn't CONNECT, reject URLs without protocol.
- *
- * Revision 1.41 2008/05/02 09:51:34 fabiankeil
- * In parse_http_url(), don't muck around with values
- * that are none of its business: require an initialized
- * http structure and never unset http->ssl.
- *
- * Revision 1.40 2008/04/23 16:12:28 fabiankeil
- * Free with freez().
- *
- * Revision 1.39 2008/04/22 16:27:42 fabiankeil
- * In parse_http_request(), remove a pointless
- * temporary variable and free the buffer earlier.
- *
- * Revision 1.38 2008/04/18 05:17:18 fabiankeil
- * Mark simplematch()'s parameters as immutable.
- *
- * Revision 1.37 2008/04/17 14:53:29 fabiankeil
- * Move simplematch() into urlmatch.c as it's only
- * used to match (old-school) domain patterns.
- *
- * Revision 1.36 2008/04/14 18:19:48 fabiankeil
- * Remove now-pointless cast in create_url_spec().
- *
- * Revision 1.35 2008/04/14 18:11:21 fabiankeil
- * The compiler might not notice it, but the buffer passed to
- * create_url_spec() is modified later on and thus shouldn't
- * be declared immutable.
- *
- * Revision 1.34 2008/04/13 13:32:07 fabiankeil
- * Factor URL pattern compilation out of create_url_spec().
- *
- * Revision 1.33 2008/04/12 14:03:13 fabiankeil
- * Remove an obvious comment and improve another one.
- *
- * Revision 1.32 2008/04/12 12:38:06 fabiankeil
- * Factor out duplicated code to compile host, path and tag patterns.
- *
- * Revision 1.31 2008/04/10 14:41:04 fabiankeil
- * Ditch url_spec's path member now that it's no longer used.
- *
- * Revision 1.30 2008/04/10 04:24:24 fabiankeil
- * Stop duplicating the plain text representation of the path regex
- * (and keeping the copy around). Once the regex is compiled it's no
- * longer useful.
- *
- * Revision 1.29 2008/04/10 04:17:56 fabiankeil
- * In url_match(), check the right member for NULL when determining
- * whether there's a path regex to execute. Looking for a plain-text
- * representation works as well, but it looks "interesting" and that
- * member will be removed soonish anyway.
- *
- * Revision 1.28 2008/04/08 16:07:39 fabiankeil
- * Make it harder to mistake url_match()'s
- * second parameter for an url_spec.
- *
- * Revision 1.27 2008/04/08 15:44:33 fabiankeil
- * Save a bit of memory (and a few cpu cycles) by not bothering to
- * compile slash-only path regexes that don't affect the result.
- *
- * Revision 1.26 2008/04/07 16:57:18 fabiankeil
- * - Use free_url_spec() more consistently.
- * - Let it reset url->dcount just in case.
- *
- * Revision 1.25 2008/04/06 15:18:38 fabiankeil
- * Oh well, rename the --enable-pcre-host-patterns option to
- * --enable-extended-host-patterns as it's not really PCRE syntax.
- *
- * Revision 1.24 2008/04/06 14:54:26 fabiankeil
- * Use PCRE syntax in host patterns when configured
- * with --enable-pcre-host-patterns.
- *
- * Revision 1.23 2008/04/05 12:19:20 fabiankeil
- * Factor compile_host_pattern() out of create_url_spec().
- *
- * Revision 1.22 2008/03/30 15:02:32 fabiankeil
- * SZitify unknown_method().
- *
- * Revision 1.21 2007/12/24 16:34:23 fabiankeil
- * Band-aid (and micro-optimization) that makes it less likely to run out of
- * stack space with overly-complex path patterns. Probably masks the problem
- * reported by Lee in #1856679. Hohoho.
- *
- * Revision 1.20 2007/09/02 15:31:20 fabiankeil
- * Move match_portlist() from filter.c to urlmatch.c.
- * It's used for url matching, not for filtering.
- *
- * Revision 1.19 2007/09/02 13:42:11 fabiankeil
- * - Allow port lists in url patterns.
- * - Ditch unused url_spec member pathlen.
- *
- * Revision 1.18 2007/07/30 16:42:21 fabiankeil
- * Move the method check into unknown_method()
- * and loop through the known methods instead
- * of using a screen-long OR chain.
- *
- * Revision 1.17 2007/04/15 16:39:21 fabiankeil
- * Introduce tags as alternative way to specify which
- * actions apply to a request. At the moment tags can be
- * created based on client and server headers.
- *
- * Revision 1.16 2007/02/13 13:59:24 fabiankeil
- * Remove redundant log message.
- *
- * Revision 1.15 2007/01/28 16:11:23 fabiankeil
- * Accept WebDAV methods for subversion
- * in parse_http_request(). Closes FR 1581425.
- *
- * Revision 1.14 2007/01/06 14:23:56 fabiankeil
- * Fix gcc43 warnings. Mark *csp as immutable
- * for parse_http_url() and url_match().
- * Replace a sprintf call with snprintf.
- *
- * Revision 1.13 2006/12/06 19:50:54 fabiankeil
- * parse_http_url() now handles intercepted
- * HTTP request lines as well. Moved parts
- * of parse_http_url()'s code into
- * init_domain_components() so that it can
- * be reused in chat().
- *
- * Revision 1.12 2006/07/18 14:48:47 david__schmidt
- * Reorganizing the repository: swapping out what was HEAD (the old 3.1 branch)
- * with what was really the latest development (the v_3_0_branch branch)
- *
- * Revision 1.10.2.7 2003/05/17 15:57:24 oes
- * - parse_http_url now checks memory allocation failure for
- * duplication of "*" URL and rejects "*something" URLs
- * Closes bug #736344
- * - Added a comment to what might look like a bug in
- * create_url_spec (see !bug #736931)
- * - Comment cosmetics
- *
- * Revision 1.10.2.6 2003/05/07 12:39:48 oes
- * Fix typo: Default port for https URLs is 443, not 143.
- * Thanks to Scott Tregear for spotting this one.
- *
- * Revision 1.10.2.5 2003/02/28 13:09:29 oes
- * Fixed a rare double free condition as per Bug #694713
- *
- * Revision 1.10.2.4 2003/02/28 12:57:44 oes
- * Moved freeing of http request structure to its owner
- * as per Dan Price's observations in Bug #694713
- *
- * Revision 1.10.2.3 2002/11/12 16:50:40 oes
- * Fixed memory leak in parse_http_request() reported by Oliver Stoeneberg. Fixes bug #637073
- *
- * Revision 1.10.2.2 2002/09/25 14:53:15 oes
- * Added basic support for OPTIONS and TRACE HTTP methods:
- * parse_http_url now recognizes the "*" URI as well as
- * the OPTIONS and TRACE method keywords.
- *
- * Revision 1.10.2.1 2002/06/06 19:06:44 jongfoster
- * Adding support for proprietary Microsoft WebDAV extensions
- *
- * Revision 1.10 2002/05/12 21:40:37 jongfoster
- * - Removing some unused code
- *
- * Revision 1.9 2002/04/04 00:36:36 gliptak
- * always use pcre for matching
- *
- * Revision 1.8 2002/04/03 23:32:47 jongfoster
- * Fixing memory leak on error
- *
- * Revision 1.7 2002/03/26 22:29:55 swa
- * we have a new homepage!
- *
- * Revision 1.6 2002/03/24 13:25:43 swa
- * name change related issues
- *
- * Revision 1.5 2002/03/13 00:27:05 jongfoster
- * Killing warnings
- *
- * Revision 1.4 2002/03/07 03:46:17 oes
- * Fixed compiler warnings
- *
- * Revision 1.3 2002/03/03 14:51:11 oes
- * Fixed CLF logging: Added ocmd member for client's request to struct http_request
- *
- * Revision 1.2 2002/01/21 00:14:09 jongfoster
- * Correcting comment style
- * Fixing an uninitialized memory bug in create_url_spec()
- *
- * Revision 1.1 2002/01/17 20:53:46 jongfoster
- * Moving all our URL and URL pattern parsing code to the same file - it
- * was scattered around in filters.c, loaders.c and parsers.c.
- *
- * Providing a single, simple url_match(pattern,url) function - rather than
- * the 3-line match routine which was repeated all over the place.
- *
- * Renaming free_url to free_url_spec, since it frees a struct url_spec.
- *
- * Providing parse_http_url() so that URLs can be parsed without faking a
- * HTTP request line for parse_http_request() or repeating the parsing
- * code (both of which were techniques that were actually in use).
- *
- * Standardizing that struct http_request is used to represent a URL, and
- * struct url_spec is used to represent a URL pattern. (Before, URLs were
- * represented as seperate variables and a partially-filled-in url_spec).
- *
- *
*********************************************************************/
-\f
+
#include "config.h"
const char urlmatch_h_rcs[] = URLMATCH_H_VERSION;
-enum regex_anchoring {NO_ANCHORING, LEFT_ANCHORED, RIGHT_ANCHORED};
+enum regex_anchoring
+{
+ NO_ANCHORING,
+ LEFT_ANCHORED,
+ RIGHT_ANCHORED,
+ RIGHT_ANCHORED_HOST
+};
static jb_err compile_host_pattern(struct url_spec *url, const char *host_pattern);
/*********************************************************************
freez(http->path);
freez(http->ver);
freez(http->host_ip_addr_str);
+#ifndef FEATURE_EXTENDED_HOST_PATTERNS
freez(http->dbuffer);
freez(http->dvec);
http->dcount = 0;
+#endif
}
+#ifndef FEATURE_EXTENDED_HOST_PATTERNS
/*********************************************************************
*
* Function : init_domain_components
return JB_ERR_OK;
}
+#endif /* ndef FEATURE_EXTENDED_HOST_PATTERNS */
/*********************************************************************
host = buf;
}
+ /* Move after hostname before port number */
+ if (*host == '[')
+ {
+ /* Numeric IPv6 address delimited by brackets */
+ host++;
+ port = strchr(host, ']');
+
+ if (port == NULL)
+ {
+ /* Missing closing bracket */
+ freez(buf);
+ return JB_ERR_PARSE;
+ }
+
+ *port++ = '\0';
+
+ if (*port == '\0')
+ {
+ port = NULL;
+ }
+ else if (*port != ':')
+ {
+ /* Garbage after closing bracket */
+ freez(buf);
+ return JB_ERR_PARSE;
+ }
+ }
+ else
+ {
+ /* Plain non-escaped hostname */
+ port = strchr(host, ':');
+ }
+
/* check if url contains port */
- port = strchr(host, ':');
if (port != NULL)
{
/* Contains port */
}
}
- /*
- * Split domain name so we can compare it against wildcards
- */
+#ifdef FEATURE_EXTENDED_HOST_PATTERNS
+ return JB_ERR_OK;
+#else
+ /* Split domain name so we can compare it against wildcards */
return init_domain_components(http);
+#endif /* def FEATURE_EXTENDED_HOST_PATTERNS */
}
* Parameters :
* 1 : req = HTTP request line to break down
* 2 : http = pointer to the http structure to hold elements
- * 3 : csp = Current client state (buffers, headers, etc...)
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out of memory
* or >100 domains deep.
*
*********************************************************************/
-jb_err parse_http_request(const char *req,
- struct http_request *http,
- const struct client_state *csp)
+jb_err parse_http_request(const char *req, struct http_request *http)
{
char *buf;
char *v[10]; /* XXX: Why 10? We should only need three. */
*
* Parameters :
* 1 : pattern = The pattern to compile.
- * 2 : anchoring = How the regex should be anchored.
- * Can be either one of NO_ANCHORING,
- * LEFT_ANCHORED or RIGHT_ANCHORED.
+ * 2 : anchoring = How the regex should be modified
+ * before compilation. Can be either
+ * one of NO_ANCHORING, LEFT_ANCHORED,
+ * RIGHT_ANCHORED or RIGHT_ANCHORED_HOST.
* 3 : url = In case of failures, the spec member is
* logged and the structure freed.
* 4 : regex = Where the compiled regex should be stored.
case RIGHT_ANCHORED:
fmt = "%s$";
break;
+ case RIGHT_ANCHORED_HOST:
+ fmt = "%s\\.?$";
+ break;
case LEFT_ANCHORED:
fmt = "^%s";
break;
*p = '\0';
}
- p = strchr(buf, ':');
+ /*
+ * IPv6 numeric hostnames can contain colons, thus we need
+ * to delimit the hostname before the real port separator.
+ * As brackets are already used in the hostname pattern,
+ * we use angle brackets ('<', '>') instead.
+ */
+ if ((buf[0] == '<') && (NULL != (p = strchr(buf + 1, '>'))))
+ {
+ *p++ = '\0';
+ buf++;
+
+ if (*p == '\0')
+ {
+ /* IPv6 address without port number */
+ p = NULL;
+ }
+ else if (*p != ':')
+ {
+ /* Garbage after address delimiter */
+ return JB_ERR_PARSE;
+ }
+ }
+ else
+ {
+ p = strchr(buf, ':');
+ }
+
if (NULL != p)
{
*p++ = '\0';
*********************************************************************/
static jb_err compile_host_pattern(struct url_spec *url, const char *host_pattern)
{
- return compile_pattern(host_pattern, RIGHT_ANCHORED, url, &url->host_regex);
+ return compile_pattern(host_pattern, RIGHT_ANCHORED_HOST, url, &url->host_regex);
}
#else
|| ((*pat == ']') && (charmap[*txt / 8] & (1 << (*txt % 8)))) )
{
/*
- * Sucess: Go ahead
+ * Success: Go ahead
*/
pat++;
}
return JB_ERR_MEMORY;
}
- /* Is it tag pattern? */
- if (0 == strncmpic("TAG:", url->spec, 4))
+ /* Is it a tag pattern? */
+ if (0 == strncmpic(url->spec, "TAG:", 4))
{
/* The pattern starts with the first character after "TAG:" */
const char *tag_pattern = buf + 4;
return compile_pattern(tag_pattern, NO_ANCHORING, url, &url->tag_regex);
}
- /* If it isn't a tag pattern it must be a URL pattern. */
+ /* If it isn't a tag pattern it must be an URL pattern. */
return compile_url_pattern(url, buf);
}
}
+/*********************************************************************
+ *
+ * Function : port_matches
+ *
+ * Description : Compares a port against a port list.
+ *
+ * Parameters :
+ * 1 : port = The port to check.
+ * 2 : port_list = The list of port to compare with.
+ *
+ * Returns : TRUE for yes, FALSE otherwise.
+ *
+ *********************************************************************/
+static int port_matches(const int port, const char *port_list)
+{
+ return ((NULL == port_list) || match_portlist(port_list, port));
+}
+
+
+/*********************************************************************
+ *
+ * Function : host_matches
+ *
+ * Description : Compares a host against a host pattern.
+ *
+ * Parameters :
+ * 1 : url = The URL to match
+ * 2 : pattern = The URL pattern
+ *
+ * Returns : TRUE for yes, FALSE otherwise.
+ *
+ *********************************************************************/
+static int host_matches(const struct http_request *http,
+ const struct url_spec *pattern)
+{
+#ifdef FEATURE_EXTENDED_HOST_PATTERNS
+ return ((NULL == pattern->host_regex)
+ || (0 == regexec(pattern->host_regex, http->host, 0, NULL, 0)));
+#else
+ return ((NULL == pattern->dbuffer) || (0 == domain_match(pattern, http)));
+#endif
+}
+
+
+/*********************************************************************
+ *
+ * Function : path_matches
+ *
+ * Description : Compares a path against a path pattern.
+ *
+ * Parameters :
+ * 1 : path = The path to match
+ * 2 : pattern = The URL pattern
+ *
+ * Returns : TRUE for yes, FALSE otherwise.
+ *
+ *********************************************************************/
+static int path_matches(const char *path, const struct url_spec *pattern)
+{
+ return ((NULL == pattern->preg)
+ || (0 == regexec(pattern->preg, path, 0, NULL, 0)));
+}
+
+
/*********************************************************************
*
* Function : url_match
int url_match(const struct url_spec *pattern,
const struct http_request *http)
{
- /* XXX: these should probably be functions. */
-#define PORT_MATCHES ((NULL == pattern->port_list) || match_portlist(pattern->port_list, http->port))
-#ifdef FEATURE_EXTENDED_HOST_PATTERNS
-#define DOMAIN_MATCHES ((NULL == pattern->host_regex) || (0 == regexec(pattern->host_regex, http->host, 0, NULL, 0)))
-#else
-#define DOMAIN_MATCHES ((NULL == pattern->dbuffer) || (0 == domain_match(pattern, http)))
-#endif
-#define PATH_MATCHES ((NULL == pattern->preg) || (0 == regexec(pattern->preg, http->path, 0, NULL, 0)))
-
if (pattern->tag_regex != NULL)
{
/* It's a tag pattern and shouldn't be matched against URLs */
return 0;
}
- return (PORT_MATCHES && DOMAIN_MATCHES && PATH_MATCHES);
+ return (port_matches(http->port, pattern->port_list)
+ && host_matches(http, pattern) && path_matches(http->path, pattern));
}
{
char *min, *max, *next, *portlist_copy;
- min = next = portlist_copy = strdup(portlist);
+ min = portlist_copy = strdup(portlist);
/*
* Zero-terminate first item and remember offset for next
/*
* Loop through all items, checking for match
*/
- while(min)
+ while (NULL != min)
{
if (NULL == (max = strchr(min, (int) '-')))
{
}
+/*********************************************************************
+ *
+ * Function : parse_forwarder_address
+ *
+ * Description : Parse out the host and port from a forwarder address.
+ *
+ * Parameters :
+ * 1 : address = The forwarder address to parse.
+ * 2 : hostname = Used to return the hostname. NULL on error.
+ * 3 : port = Used to return the port. Untouched if no port
+ * is specified.
+ *
+ * Returns : JB_ERR_OK on success
+ * JB_ERR_MEMORY on out of memory
+ * JB_ERR_PARSE on malformed address.
+ *
+ *********************************************************************/
+jb_err parse_forwarder_address(char *address, char **hostname, int *port)
+{
+ char *p = address;
+
+ if ((*address == '[') && (NULL == strchr(address, ']')))
+ {
+ /* XXX: Should do some more validity checks here. */
+ return JB_ERR_PARSE;
+ }
+
+ *hostname = strdup(address);
+ if (NULL == *hostname)
+ {
+ return JB_ERR_MEMORY;
+ }
+
+ if ((**hostname == '[') && (NULL != (p = strchr(*hostname, ']'))))
+ {
+ *p++ = '\0';
+ memmove(*hostname, (*hostname + 1), (size_t)(p - *hostname));
+ if (*p == ':')
+ {
+ *port = (int)strtol(++p, NULL, 0);
+ }
+ }
+ else if (NULL != (p = strchr(*hostname, ':')))
+ {
+ *p++ = '\0';
+ *port = (int)strtol(p, NULL, 0);
+ }
+
+ return JB_ERR_OK;
+
+}
+
+
/*
Local Variables:
tab-width: 3
projects / privoxy.git / blobdiff