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Code Issues Wiki

[mod_rewrite] Implement rewrite action without regex

personal/stbuehler/wip
Thomas Porzelt 2009-07-23 12:27:56 +02:00
parent 4980987578
commit 048c66938c
1 changed files with 38 additions and 12 deletions
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50
src/modules/mod_rewrite.c
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@ -25,7 +25,7 @@
* rewrite.debug = <true|false>;
* - if set, debug information is written to the log
* Actions:
* rewrite "/new/path"; (not implemented yet)
* rewrite "/new/path";
* - sets request.path to "/new/path", substituting all placeholders. $0..$9 get replaced by empty strings.
* rewrite "regex" => "/new/path";
* - sets request.path to "/new/path" if "regex" matched the original req.path.
@ -47,7 +47,6 @@
* For example "^foo\\dbar$" will end up as "^foo\dbar$" as regex input, which would match things like "foo3bar".
*
* Todo:
* - rewrite rule without regex, just overwriting the path/query
* - implement rewrite_optimized which reorders rules according to hitcount
* - implement rewrite_raw which uses the raw uri
*
@ -229,24 +228,32 @@ static gboolean rewrite_internal(liVRequest *vr, GString *dest_path, GString *de
guint i;
GString *str;
gchar *path;
GMatchInfo *match_info;
gint start_pos, end_pos;
gboolean encoded;
GString *dest = dest_path;
GMatchInfo *match_info = NULL;
if (raw)
path = vr->request.uri.raw->str;
else
path = vr->request.uri.path->str;
if (!g_regex_match(regex, path, 0, &match_info))
if (regex && !g_regex_match(regex, path, 0, &match_info)) {
if (match_info)
g_match_info_free(match_info);
return FALSE;
}
g_string_truncate(dest_path, 0);
g_string_truncate(dest_query, 0);
if (!parts->len)
if (!parts->len) {
if (match_info)
g_match_info_free(match_info);
return TRUE;
}
for (i = 0; i < parts->len; i++) {
rewrite_part *rp = &g_array_index(parts, rewrite_part, i);
@ -255,7 +262,7 @@ static gboolean rewrite_internal(liVRequest *vr, GString *dest_path, GString *de
switch (rp->type) {
case REWRITE_PART_STRING: g_string_append_len(dest, GSTR_LEN(rp->data.str)); break;
case REWRITE_PART_CAPTURED:
if (g_match_info_fetch_pos(match_info, rp->data.ndx, &start_pos, &end_pos) && start_pos != -1)
if (regex && g_match_info_fetch_pos(match_info, rp->data.ndx, &start_pos, &end_pos) && start_pos != -1)
g_string_append_len(dest, path + start_pos, end_pos - start_pos);
break;
@ -325,8 +332,12 @@ static liHandlerResult rewrite(liVRequest *vr, gpointer param, gpointer *context
if (rewrite_internal(vr, vr->wrk->tmp_str, g_ptr_array_index(rpd->tmp_strings, vr->wrk->ndx), rule->regex, rule->parts, FALSE)) {
/* regex matched */
if (debug)
VR_DEBUG(vr, "rewrite: \"%s\" => \"%s\"", vr->request.uri.path->str, vr->wrk->tmp_str->str);
if (debug) {
VR_DEBUG(vr, "rewrite: path \"%s\" => \"%s\", query \"%s\" => \"%s\"",
vr->request.uri.path->str, vr->wrk->tmp_str->str,
vr->request.uri.query->str, ((GString*)g_ptr_array_index(rpd->tmp_strings, vr->wrk->ndx))->str
);
}
g_string_truncate(vr->request.uri.path, 0);
g_string_append_len(vr->request.uri.path, GSTR_LEN(vr->wrk->tmp_str));
@ -354,7 +365,9 @@ static void rewrite_free(liServer *srv, gpointer param) {
rewrite_rule *rule = &g_array_index(rd->rules, rewrite_rule, i);
rewrite_parts_free(rule->parts);
g_regex_unref(rule->regex);
if (rule->regex)
g_regex_unref(rule->regex);
}
g_array_free(rd->rules, TRUE);
@ -373,8 +386,8 @@ static liAction* rewrite_create(liServer *srv, liPlugin* p, liValue *val) {
UNUSED(srv);
UNUSED(p);
if (!val || val->type != LI_VALUE_LIST) {
ERROR(srv, "%s", "rewrite expects a either a tuple of strings or a list of those");
if (!val || !(val->type == LI_VALUE_STRING || val->type == LI_VALUE_LIST)) {
ERROR(srv, "%s", "rewrite expects a either a string, a tuple of strings or a list of string tuples");
return NULL;
}
@ -390,7 +403,20 @@ static liAction* rewrite_create(liServer *srv, liPlugin* p, liValue *val) {
arr = val->data.list;
if (arr->len == 2 && g_array_index(arr, liValue*, 0)->type == LI_VALUE_STRING && g_array_index(arr, liValue*, 1)->type == LI_VALUE_STRING) {
if (val->type == LI_VALUE_STRING) {
/* rewrite "/foo/bar"; */
rule.has_querystring = FALSE;
rule.parts = rewrite_parts_parse(val->data.string, &rule.has_querystring);
rule.regex = NULL;
if (!rule.parts) {
rewrite_free(NULL, rd);
ERROR(srv, "rewrite: error parsing rule \"%s\"", val->data.string->str);
return NULL;
}
g_array_append_val(rd->rules, rule);
} else if (arr->len == 2 && g_array_index(arr, liValue*, 0)->type == LI_VALUE_STRING && g_array_index(arr, liValue*, 1)->type == LI_VALUE_STRING) {
/* only one rule */
rule.has_querystring = FALSE;
rule.parts = rewrite_parts_parse(g_array_index(arr, liValue*, 1)->data.string, &rule.has_querystring);