-const char urlmatch_rcs[] = "$Id: urlmatch.c,v 1.30 2008/04/10 04:24:24 fabiankeil Exp $";
+const char urlmatch_rcs[] = "$Id: urlmatch.c,v 1.31 2008/04/10 14:41:04 fabiankeil Exp $";
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/urlmatch.c,v $
*
* Revisions :
* $Log: urlmatch.c,v $
+ * 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
const char urlmatch_h_rcs[] = URLMATCH_H_VERSION;
+enum regex_anchoring {NO_ANCHORING, LEFT_ANCHORED, RIGHT_ANCHORED};
/*********************************************************************
*
}
-#ifdef FEATURE_EXTENDED_HOST_PATTERNS
/*********************************************************************
*
- * Function : compile_host_pattern
+ * Function : compile_pattern
*
- * Description : Parses and compiles a PCRE host pattern..
+ * Description : Compiles a host, domain or TAG pattern.
*
* Parameters :
- * 1 : url = Target url_spec to be filled in.
- * 2 : host_pattern = Host pattern to compile.
+ * 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_host_pattern(struct url_spec *url, const char *host_pattern)
+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);
- assert(host_pattern);
- assert(strlen(host_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$";
+ break;
+ case LEFT_ANCHORED:
+ fmt = "^%s";
+ break;
+ default:
+ log_error(LOG_LEVEL_FATAL,
+ "Invalid anchoring in compile_pattern %d", anchoring);
+ }
- url->host_regex = zalloc(sizeof(*url->host_regex));
- if (NULL == url->host_regex)
+ *regex = zalloc(sizeof(**regex));
+ if (NULL == *regex)
{
free_url_spec(url);
return JB_ERR_MEMORY;
}
- snprintf(rebuf, sizeof(rebuf), "%s$", host_pattern);
+ snprintf(rebuf, sizeof(rebuf), fmt, pattern);
- errcode = regcomp(url->host_regex, rebuf,
- (REG_EXTENDED|REG_NOSUB|REG_ICASE));
+ errcode = regcomp(*regex, rebuf, (REG_EXTENDED|REG_NOSUB|REG_ICASE));
if (errcode)
{
- size_t errlen = regerror(errcode, url->host_regex, rebuf, sizeof(rebuf));
+ 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: %s", url->spec, rebuf);
+ log_error(LOG_LEVEL_ERROR, "error compiling %s from %s: %s",
+ pattern, url->spec, rebuf);
free_url_spec(url);
return JB_ERR_PARSE;
}
+#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
/*********************************************************************
jb_err create_url_spec(struct url_spec * url, const char * buf)
{
char *p;
- int errcode;
- size_t errlen;
- char rebuf[BUFFER_SIZE];
assert(url);
assert(buf);
/* Is it tag pattern? */
if (0 == strncmpic("TAG:", url->spec, 4))
{
- if (NULL == (url->tag_regex = zalloc(sizeof(*url->tag_regex))))
- {
- freez(url->spec);
- return JB_ERR_MEMORY;
- }
-
- /* buf + 4 to skip "TAG:" */
- errcode = regcomp(url->tag_regex, buf + 4, (REG_EXTENDED|REG_NOSUB|REG_ICASE));
- if (errcode)
- {
- errlen = regerror(errcode, url->preg, rebuf, sizeof(rebuf));
- if (errlen > (sizeof(rebuf) - 1))
- {
- errlen = sizeof(rebuf) - 1;
- }
- rebuf[errlen] = '\0';
- log_error(LOG_LEVEL_ERROR, "error compiling %s: %s", url->spec, rebuf);
- free_url_spec(url);
-
- return JB_ERR_PARSE;
- }
- return JB_ERR_OK;
+ /* 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);
}
- /* Only reached for URL patterns */
+ /* Only reached for URL patterns. XXX: should be factored out. */
p = strchr(buf, '/');
if (NULL != p)
{
*/
if (*(p+1) != '\0')
{
- /* XXX: mostly duplicated code, should be factored out. */
- url->preg = zalloc(sizeof(*url->preg));
- if (NULL == url->preg)
- {
- free_url_spec(url);
- return JB_ERR_MEMORY;
- }
+ /*
+ * XXX: does it make sense to compile the slash at the beginning?
+ */
+ jb_err err = compile_pattern(p, LEFT_ANCHORED, url, &url->preg);
- snprintf(rebuf, sizeof(rebuf), "^(%s)", p);
- errcode = regcomp(url->preg, rebuf,
- (REG_EXTENDED|REG_NOSUB|REG_ICASE));
- if (errcode)
+ if (JB_ERR_OK != err)
{
- 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);
- free_url_spec(url);
-
- return JB_ERR_PARSE;
+ return err;
}
}
*p = '\0';