-const char urlmatch_rcs[] = "$Id: urlmatch.c,v 1.1 2002/01/17 20:53:46 jongfoster Exp $";
+const char urlmatch_rcs[] = "$Id: urlmatch.c,v 1.33 2008/04/12 14:03:13 fabiankeil Exp $";
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/urlmatch.c,v $
* Purpose : Declares functions to match URLs against URL
* patterns.
*
- * Copyright : Written by and Copyright (C) 2001 the SourceForge
- * IJBSWA team. http://ijbswa.sourceforge.net
+ * Copyright : Written by and Copyright (C) 2001-2003, 2006-2008 the SourceForge
+ * Privoxy team. http://www.privoxy.org/
*
* Based on the Internet Junkbuster originally written
* by and Copyright (C) 1997 Anonymous Coders and
*
* Revisions :
* $Log: urlmatch.c,v $
+ * 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.
const char urlmatch_h_rcs[] = URLMATCH_H_VERSION;
-/* Fix a problem with Solaris. There should be no effect on other
- * platforms.
- * Solaris's isspace() is a macro which uses it's argument directly
- * as an array index. Therefore we need to make sure that high-bit
- * characters generate +ve values, and ideally we also want to make
- * the argument match the declared parameter type of "int".
- *
- * Why did they write a character function that can't take a simple
- * "char" argument? Doh!
- */
-#define ijb_isupper(__X) isupper((int)(unsigned char)(__X))
-#define ijb_tolower(__X) tolower((int)(unsigned char)(__X))
-
+enum regex_anchoring {NO_ANCHORING, LEFT_ANCHORED, RIGHT_ANCHORED};
+static jb_err compile_host_pattern(struct url_spec *url, const char *host_pattern);
/*********************************************************************
*
assert(http);
freez(http->cmd);
+ freez(http->ocmd);
freez(http->gpc);
freez(http->host);
freez(http->url);
}
+/*********************************************************************
+ *
+ * Function : init_domain_components
+ *
+ * Description : Splits the domain name so we can compare it
+ * against wildcards. It used to be part of
+ * parse_http_url, but was separated because the
+ * same code is required in chat in case of
+ * intercepted requests.
+ *
+ * Parameters :
+ * 1 : http = pointer to the http structure to hold elements.
+ *
+ * Returns : JB_ERR_OK on success
+ * JB_ERR_MEMORY on out of memory
+ * JB_ERR_PARSE on malformed command/URL
+ * or >100 domains deep.
+ *
+ *********************************************************************/
+jb_err init_domain_components(struct http_request *http)
+{
+ char *vec[BUFFER_SIZE];
+ size_t size;
+ char *p;
+
+ http->dbuffer = strdup(http->host);
+ if (NULL == http->dbuffer)
+ {
+ return JB_ERR_MEMORY;
+ }
+
+ /* map to lower case */
+ for (p = http->dbuffer; *p ; p++)
+ {
+ *p = (char)tolower((int)(unsigned char)*p);
+ }
+
+ /* split the domain name into components */
+ http->dcount = ssplit(http->dbuffer, ".", vec, SZ(vec), 1, 1);
+
+ if (http->dcount <= 0)
+ {
+ /*
+ * Error: More than SZ(vec) components in domain
+ * or: no components in domain
+ */
+ log_error(LOG_LEVEL_ERROR, "More than SZ(vec) components in domain or none at all.");
+ return JB_ERR_PARSE;
+ }
+
+ /* save a copy of the pointers in dvec */
+ size = (size_t)http->dcount * sizeof(*http->dvec);
+
+ http->dvec = (char **)malloc(size);
+ if (NULL == http->dvec)
+ {
+ return JB_ERR_MEMORY;
+ }
+
+ memcpy(http->dvec, vec, size);
+
+ return JB_ERR_OK;
+}
+
+
/*********************************************************************
*
* Function : parse_http_url
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out of memory
- * JB_ERR_CGI_PARAMS on malformed command/URL
- * or >100 domains deep.
+ * JB_ERR_PARSE on malformed command/URL
+ * or >100 domains deep.
*
*********************************************************************/
jb_err parse_http_url(const char * url,
struct http_request *http,
- struct client_state *csp)
+ const struct client_state *csp)
{
+ int host_available = 1; /* A proxy can dream. */
+
/*
* Zero out the results structure
*/
}
+ /*
+ * Check for * URI. If found, we're done.
+ */
+ if (*http->url == '*')
+ {
+ if ( NULL == (http->path = strdup("*"))
+ || NULL == (http->hostport = strdup("")) )
+ {
+ return JB_ERR_MEMORY;
+ }
+ if (http->url[1] != '\0')
+ {
+ return JB_ERR_PARSE;
+ }
+ return JB_ERR_OK;
+ }
+
+
/*
* Split URL into protocol,hostport,path.
*/
url_noproto += 8;
http->ssl = 1;
}
+ else if (*url_noproto == '/')
+ {
+ /*
+ * Short request line without protocol and host.
+ * Most likely because the client's request
+ * was intercepted and redirected into Privoxy.
+ */
+ http->ssl = 0;
+ http->host = NULL;
+ host_available = 0;
+ }
else
{
http->ssl = 0;
http->hostport = strdup(url_noproto);
}
- free(buf);
+ freez(buf);
if ( (http->path == NULL)
|| (http->hostport == NULL))
{
- free(buf);
- free_http_request(http);
return JB_ERR_MEMORY;
}
}
+ if (!host_available)
+ {
+ /* Without host, there is nothing left to do here */
+ return JB_ERR_OK;
+ }
/*
* Split hostport into user/password (ignored), host, port.
buf = strdup(http->hostport);
if (buf == NULL)
{
- free_http_request(http);
return JB_ERR_MEMORY;
}
else
{
/* No port specified. */
- http->port = (http->ssl ? 143 : 80);
+ http->port = (http->ssl ? 443 : 80);
}
http->host = strdup(host);
if (http->host == NULL)
{
- free_http_request(http);
return JB_ERR_MEMORY;
}
}
-
/*
* Split domain name so we can compare it against wildcards
*/
- {
- char *vec[BUFFER_SIZE];
- int size;
- char *p;
-
- http->dbuffer = strdup(http->host);
- if (NULL == http->dbuffer)
- {
- free_http_request(http);
- return JB_ERR_MEMORY;
- }
+ return init_domain_components(http);
- /* map to lower case */
- for (p = http->dbuffer; *p ; p++)
- {
- *p = tolower((int)(unsigned char)*p);
- }
+}
- /* split the domain name into components */
- http->dcount = ssplit(http->dbuffer, ".", vec, SZ(vec), 1, 1);
- if (http->dcount <= 0)
- {
- /*
- * Error: More than SZ(vec) components in domain
- * or: no components in domain
- */
- free_http_request(http);
- return JB_ERR_PARSE;
- }
-
- /* save a copy of the pointers in dvec */
- size = http->dcount * sizeof(*http->dvec);
+/*********************************************************************
+ *
+ * Function : unknown_method
+ *
+ * Description : Checks whether a method is unknown.
+ *
+ * Parameters :
+ * 1 : method = points to a http method
+ *
+ * Returns : TRUE if it's unknown, FALSE otherwise.
+ *
+ *********************************************************************/
+static int unknown_method(const char *method)
+{
+ static const char *known_http_methods[] = {
+ /* Basic HTTP request type */
+ "GET", "HEAD", "POST", "PUT", "DELETE", "OPTIONS", "TRACE", "CONNECT",
+ /* webDAV extensions (RFC2518) */
+ "PROPFIND", "PROPPATCH", "MOVE", "COPY", "MKCOL", "LOCK", "UNLOCK",
+ /*
+ * Microsoft webDAV extension for Exchange 2000. See:
+ * http://lists.w3.org/Archives/Public/w3c-dist-auth/2002JanMar/0001.html
+ * http://msdn.microsoft.com/library/en-us/wss/wss/_webdav_methods.asp
+ */
+ "BCOPY", "BMOVE", "BDELETE", "BPROPFIND", "BPROPPATCH",
+ /*
+ * Another Microsoft webDAV extension for Exchange 2000. See:
+ * http://systems.cs.colorado.edu/grunwald/MobileComputing/Papers/draft-cohen-gena-p-base-00.txt
+ * http://lists.w3.org/Archives/Public/w3c-dist-auth/2002JanMar/0001.html
+ * http://msdn.microsoft.com/library/en-us/wss/wss/_webdav_methods.asp
+ */
+ "SUBSCRIBE", "UNSUBSCRIBE", "NOTIFY", "POLL",
+ /*
+ * Yet another WebDAV extension, this time for
+ * Web Distributed Authoring and Versioning (RFC3253)
+ */
+ "VERSION-CONTROL", "REPORT", "CHECKOUT", "CHECKIN", "UNCHECKOUT",
+ "MKWORKSPACE", "UPDATE", "LABEL", "MERGE", "BASELINE-CONTROL", "MKACTIVITY",
+ };
+ int i;
- http->dvec = (char **)malloc(size);
- if (NULL == http->dvec)
+ for (i = 0; i < SZ(known_http_methods); i++)
+ {
+ if (0 == strcmpic(method, known_http_methods[i]))
{
- free_http_request(http);
- return JB_ERR_MEMORY;
+ return FALSE;
}
-
- memcpy(http->dvec, vec, size);
}
+ return TRUE;
- return JB_ERR_OK;
}
*********************************************************************/
jb_err parse_http_request(const char *req,
struct http_request *http,
- struct client_state *csp)
+ const struct client_state *csp)
{
char *buf;
- char *v[10];
+ char *v[10]; /* XXX: Why 10? We should only need three. */
int n;
jb_err err;
int is_connect = 0;
return JB_ERR_PARSE;
}
- /* this could be a CONNECT request */
- if (strcmpic(v[0], "connect") == 0)
- {
- /* Secure */
- is_connect = 1;
- }
- /* or it could be any other basic HTTP request type */
- else if ((0 == strcmpic(v[0], "get"))
- || (0 == strcmpic(v[0], "head"))
- || (0 == strcmpic(v[0], "post"))
- || (0 == strcmpic(v[0], "put"))
- || (0 == strcmpic(v[0], "delete"))
-
- /* or a webDAV extension (RFC2518) */
- || (0 == strcmpic(v[0], "propfind"))
- || (0 == strcmpic(v[0], "proppatch"))
- || (0 == strcmpic(v[0], "move"))
- || (0 == strcmpic(v[0], "copy"))
- || (0 == strcmpic(v[0], "mkcol"))
- || (0 == strcmpic(v[0], "lock"))
- || (0 == strcmpic(v[0], "unlock"))
- )
- {
- /* Normal */
- is_connect = 0;
- }
- else
+ /*
+ * Fail in case of unknown methods
+ * which we might not handle correctly.
+ *
+ * XXX: There should be a config option
+ * to forward requests with unknown methods
+ * anyway. Most of them don't need special
+ * steps.
+ */
+ if (unknown_method(v[0]))
{
- /* Unknown HTTP method */
+ log_error(LOG_LEVEL_ERROR, "Unknown HTTP method detected: %s", v[0]);
free(buf);
return JB_ERR_PARSE;
}
+ if (strcmpic(v[0], "CONNECT") == 0)
+ {
+ is_connect = 1;
+ }
+
err = parse_http_url(v[1], http, csp);
if (err)
{
|| (http->ver == NULL) )
{
free(buf);
- free_http_request(http);
return JB_ERR_MEMORY;
}
+ free(buf);
+ return JB_ERR_OK;
+
+}
+
+
+/*********************************************************************
+ *
+ * Function : compile_pattern
+ *
+ * Description : Compiles a host, domain or TAG pattern.
+ *
+ * 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.
+ * 3 : url = In case of failures, the spec member is
+ * logged and the structure freed.
+ * 4 : regex = Where the compiled regex should be stored.
+ *
+ * Returns : JB_ERR_OK - Success
+ * JB_ERR_MEMORY - Out of memory
+ * JB_ERR_PARSE - Cannot parse regex
+ *
+ *********************************************************************/
+static jb_err compile_pattern(const char *pattern, enum regex_anchoring anchoring,
+ struct url_spec *url, regex_t **regex)
+{
+ int errcode;
+ char rebuf[BUFFER_SIZE];
+ const char *fmt;
+
+ assert(pattern);
+ assert(strlen(pattern) < sizeof(rebuf) - 2);
+
+ if (pattern[0] == '\0')
+ {
+ *regex = NULL;
+ return JB_ERR_OK;
+ }
+
+ switch (anchoring)
+ {
+ case NO_ANCHORING:
+ fmt = "%s";
+ break;
+ case RIGHT_ANCHORED:
+ fmt = "%s$";
+ break;
+ case LEFT_ANCHORED:
+ fmt = "^%s";
+ break;
+ default:
+ log_error(LOG_LEVEL_FATAL,
+ "Invalid anchoring in compile_pattern %d", anchoring);
+ }
+
+ *regex = zalloc(sizeof(**regex));
+ if (NULL == *regex)
+ {
+ free_url_spec(url);
+ return JB_ERR_MEMORY;
+ }
+
+ snprintf(rebuf, sizeof(rebuf), fmt, pattern);
+
+ errcode = regcomp(*regex, rebuf, (REG_EXTENDED|REG_NOSUB|REG_ICASE));
+
+ if (errcode)
+ {
+ size_t errlen = regerror(errcode, *regex, rebuf, sizeof(rebuf));
+ if (errlen > (sizeof(rebuf) - (size_t)1))
+ {
+ errlen = sizeof(rebuf) - (size_t)1;
+ }
+ rebuf[errlen] = '\0';
+ log_error(LOG_LEVEL_ERROR, "error compiling %s from %s: %s",
+ pattern, url->spec, rebuf);
+ free_url_spec(url);
+
+ return JB_ERR_PARSE;
+ }
+
+ return JB_ERR_OK;
+
+}
+
+
+/*********************************************************************
+ *
+ * Function : compile_url_pattern
+ *
+ * Description : Compiles the three parts of an URL pattern.
+ *
+ * Parameters :
+ * 1 : url = Target url_spec to be filled in.
+ * 2 : buf = The url pattern to compile. Will be messed up.
+ *
+ * Returns : JB_ERR_OK - Success
+ * JB_ERR_MEMORY - Out of memory
+ * JB_ERR_PARSE - Cannot parse regex
+ *
+ *********************************************************************/
+static jb_err compile_url_pattern(struct url_spec *url, char *buf)
+{
+ char *p;
+
+ p = strchr(buf, '/');
+ if (NULL != p)
+ {
+ /*
+ * Only compile the regex if it consists of more than
+ * a single slash, otherwise it wouldn't affect the result.
+ */
+ if (p[1] != '\0')
+ {
+ /*
+ * XXX: does it make sense to compile the slash at the beginning?
+ */
+ jb_err err = compile_pattern(p, LEFT_ANCHORED, url, &url->preg);
+
+ if (JB_ERR_OK != err)
+ {
+ return err;
+ }
+ }
+ *p = '\0';
+ }
+
+ p = strchr(buf, ':');
+ if (NULL != p)
+ {
+ *p++ = '\0';
+ url->port_list = strdup(p);
+ if (NULL == url->port_list)
+ {
+ return JB_ERR_MEMORY;
+ }
+ }
+ else
+ {
+ url->port_list = NULL;
+ }
+
+ if (buf[0] != '\0')
+ {
+ return compile_host_pattern(url, buf);
+ }
+
+ return JB_ERR_OK;
+
+}
+
+
+#ifdef FEATURE_EXTENDED_HOST_PATTERNS
+/*********************************************************************
+ *
+ * Function : compile_host_pattern
+ *
+ * Description : Parses and compiles a host pattern..
+ *
+ * Parameters :
+ * 1 : url = Target url_spec to be filled in.
+ * 2 : host_pattern = Host pattern to compile.
+ *
+ * Returns : JB_ERR_OK - Success
+ * JB_ERR_MEMORY - Out of memory
+ * JB_ERR_PARSE - Cannot parse regex
+ *
+ *********************************************************************/
+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);
+}
+
+#else
+
+/*********************************************************************
+ *
+ * Function : compile_host_pattern
+ *
+ * Description : Parses and "compiles" an old-school host pattern.
+ *
+ * Parameters :
+ * 1 : url = Target url_spec to be filled in.
+ * 2 : host_pattern = Host pattern to parse.
+ *
+ * Returns : JB_ERR_OK - Success
+ * JB_ERR_MEMORY - Out of memory
+ * JB_ERR_PARSE - Cannot parse regex
+ *
+ *********************************************************************/
+static jb_err compile_host_pattern(struct url_spec *url, const char *host_pattern)
+{
+ char *v[150];
+ size_t size;
+ char *p;
+
+ /*
+ * Parse domain part
+ */
+ if (host_pattern[strlen(host_pattern) - 1] == '.')
+ {
+ url->unanchored |= ANCHOR_RIGHT;
+ }
+ if (host_pattern[0] == '.')
+ {
+ url->unanchored |= ANCHOR_LEFT;
+ }
+
+ /*
+ * Split domain into components
+ */
+ url->dbuffer = strdup(host_pattern);
+ if (NULL == url->dbuffer)
+ {
+ free_url_spec(url);
+ return JB_ERR_MEMORY;
+ }
+
+ /*
+ * Map to lower case
+ */
+ for (p = url->dbuffer; *p ; p++)
+ {
+ *p = (char)tolower((int)(unsigned char)*p);
+ }
+
+ /*
+ * Split the domain name into components
+ */
+ url->dcount = ssplit(url->dbuffer, ".", v, SZ(v), 1, 1);
+
+ if (url->dcount < 0)
+ {
+ free_url_spec(url);
+ return JB_ERR_MEMORY;
+ }
+ else if (url->dcount != 0)
+ {
+ /*
+ * Save a copy of the pointers in dvec
+ */
+ size = (size_t)url->dcount * sizeof(*url->dvec);
+
+ url->dvec = (char **)malloc(size);
+ if (NULL == url->dvec)
+ {
+ free_url_spec(url);
+ return JB_ERR_MEMORY;
+ }
+
+ memcpy(url->dvec, v, size);
+ }
+ /*
+ * else dcount == 0 in which case we needn't do anything,
+ * since dvec will never be accessed and the pattern will
+ * match all domains.
+ */
return JB_ERR_OK;
}
}
}
+#endif /* def FEATURE_EXTENDED_HOST_PATTERNS */
/*********************************************************************
* Function : create_url_spec
*
* Description : Creates a "url_spec" structure from a string.
- * When finished, free with unload_url().
+ * When finished, free with free_url_spec().
*
* Parameters :
* 1 : url = Target url_spec to be filled in. Will be
* function. If this function succeeds, the
* buffer is copied to url->spec. If this
* function fails, the contents of the buffer
- * are lost forever.
+ * are lost forever. XXX: Why is this const?
*
* Returns : JB_ERR_OK - Success
* JB_ERR_MEMORY - Out of memory
*********************************************************************/
jb_err create_url_spec(struct url_spec * url, const char * buf)
{
- char *p;
-
assert(url);
assert(buf);
- /* Zero memory */
memset(url, '\0', sizeof(*url));
- /* save a copy of the orignal specification */
- if ((url->spec = strdup(buf)) == NULL)
+ /* Remember the original specification for the CGI pages. */
+ url->spec = strdup(buf);
+ if (NULL == url->spec)
{
return JB_ERR_MEMORY;
}
- if ((p = strchr(buf, '/')))
- {
- if (NULL == (url->path = strdup(p)))
- {
- freez(url->spec);
- return JB_ERR_MEMORY;
- }
- url->pathlen = strlen(url->path);
- *p = '\0';
- }
- else
- {
- url->path = NULL;
- url->pathlen = 0;
- }
-#ifdef REGEX
- if (url->path)
- {
- int errcode;
- char rebuf[BUFFER_SIZE];
-
- if (NULL == (url->preg = zalloc(sizeof(*url->preg))))
- {
- freez(url->spec);
- freez(url->path);
- return JB_ERR_MEMORY;
- }
-
- sprintf(rebuf, "^(%s)", url->path);
-
- errcode = regcomp(url->preg, rebuf,
- (REG_EXTENDED|REG_NOSUB|REG_ICASE));
- if (errcode)
- {
- size_t errlen = regerror(errcode,
- url->preg, rebuf, sizeof(rebuf));
-
- if (errlen > (sizeof(rebuf) - (size_t)1))
- {
- errlen = sizeof(rebuf) - (size_t)1;
- }
- rebuf[errlen] = '\0';
-
- log_error(LOG_LEVEL_ERROR, "error compiling %s: %s",
- url->spec, rebuf);
-
- freez(url->spec);
- freez(url->path);
- freez(url->preg);
-
- return JB_ERR_PARSE;
- }
- }
-#endif
- if ((p = strchr(buf, ':')) == NULL)
- {
- url->port = 0;
- }
- else
- {
- *p++ = '\0';
- url->port = atoi(p);
- }
-
- if (buf[0] != '\0')
+ /* Is it tag pattern? */
+ if (0 == strncmpic("TAG:", url->spec, 4))
{
- char *v[150];
- int size;
-
- /* Parse domain part */
- if (buf[strlen(buf) - 1] == '.')
- {
- url->unanchored |= ANCHOR_RIGHT;
- }
- if (buf[0] == '.')
- {
- url->unanchored |= ANCHOR_LEFT;
- }
-
- /* split domain into components */
-
- url->dbuffer = strdup(buf);
- if (NULL == url->dbuffer)
- {
- freez(url->spec);
- freez(url->path);
-#ifdef REGEX
- freez(url->preg);
-#endif /* def REGEX */
- return JB_ERR_MEMORY;
- }
-
- /* map to lower case */
- for (p = url->dbuffer; *p ; p++)
- {
- *p = tolower((int)(unsigned char)*p);
- }
-
- /* split the domain name into components */
- url->dcount = ssplit(url->dbuffer, ".", v, SZ(v), 1, 1);
-
- if (url->dcount < 0)
- {
- freez(url->spec);
- freez(url->path);
-#ifdef REGEX
- freez(url->preg);
-#endif /* def REGEX */
- freez(url->dbuffer);
- url->dcount = 0;
- return JB_ERR_MEMORY;
- }
- else if (url->dcount != 0)
- {
-
- /* save a copy of the pointers in dvec */
- size = url->dcount * sizeof(*url->dvec);
-
- url->dvec = (char **)malloc(size);
- if (NULL == url->dvec)
- {
- freez(url->spec);
- freez(url->path);
-#ifdef REGEX
- freez(url->preg);
-#endif /* def REGEX */
- freez(url->dbuffer);
- url->dcount = 0;
- return JB_ERR_MEMORY;
- }
-
- memcpy(url->dvec, v, size);
- }
+ /* 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);
}
- return JB_ERR_OK;
-
+ /* If it isn't a tag pattern it must be a URL pattern. */
+ return compile_url_pattern(url, (char *)buf);
}
if (url == NULL) return;
freez(url->spec);
+#ifdef FEATURE_EXTENDED_HOST_PATTERNS
+ if (url->host_regex)
+ {
+ regfree(url->host_regex);
+ freez(url->host_regex);
+ }
+#else
freez(url->dbuffer);
freez(url->dvec);
- freez(url->path);
-#ifdef REGEX
+ url->dcount = 0;
+#endif /* ndef FEATURE_EXTENDED_HOST_PATTERNS */
+ freez(url->port_list);
if (url->preg)
{
regfree(url->preg);
freez(url->preg);
}
-#endif
-
+ if (url->tag_regex)
+ {
+ regfree(url->tag_regex);
+ freez(url->tag_regex);
+ }
}
* 1 : pattern = a URL pattern
* 2 : url = URL to match
*
- * Returns : 0 iff the URL matches the pattern, else nonzero.
+ * Returns : Nonzero if the URL matches the pattern, else 0.
*
*********************************************************************/
int url_match(const struct url_spec *pattern,
- const struct http_request *url)
+ const struct http_request *http)
{
- return ((pattern->port == 0) || (pattern->port == url->port))
- && ((pattern->dbuffer == NULL) || (domain_match(pattern, url) == 0))
- && ((pattern->path == NULL) ||
-#ifdef REGEX
- (regexec(pattern->preg, url->path, 0, NULL, 0) == 0)
+ /* 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
- (strncmp(pattern->path, url->path, pattern->pathlen) == 0)
+#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);
+
+}
+
+
+/*********************************************************************
+ *
+ * Function : match_portlist
+ *
+ * Description : Check if a given number is covered by a comma
+ * separated list of numbers and ranges (a,b-c,d,..)
+ *
+ * Parameters :
+ * 1 : portlist = String with list
+ * 2 : port = port to check
+ *
+ * Returns : 0 => no match
+ * 1 => match
+ *
+ *********************************************************************/
+int match_portlist(const char *portlist, int port)
+{
+ char *min, *max, *next, *portlist_copy;
+
+ min = next = portlist_copy = strdup(portlist);
+
+ /*
+ * Zero-terminate first item and remember offset for next
+ */
+ if (NULL != (next = strchr(portlist_copy, (int) ',')))
+ {
+ *next++ = '\0';
+ }
+
+ /*
+ * Loop through all items, checking for match
+ */
+ while(min)
+ {
+ if (NULL == (max = strchr(min, (int) '-')))
+ {
+ /*
+ * No dash, check for equality
+ */
+ if (port == atoi(min))
+ {
+ free(portlist_copy);
+ return(1);
+ }
+ }
+ else
+ {
+ /*
+ * This is a range, so check if between min and max,
+ * or, if max was omitted, between min and 65K
+ */
+ *max++ = '\0';
+ if(port >= atoi(min) && port <= (atoi(max) ? atoi(max) : 65535))
+ {
+ free(portlist_copy);
+ return(1);
+ }
+
+ }
+
+ /*
+ * Jump to next item
+ */
+ min = next;
+
+ /*
+ * Zero-terminate next item and remember offset for n+1
+ */
+ if ((NULL != next) && (NULL != (next = strchr(next, (int) ','))))
+ {
+ *next++ = '\0';
+ }
+ }
+
+ free(portlist_copy);
+ return 0;
+
}
projects / privoxy.git / blobdiff