static void
handle_response(TSHttpTxn txnp)
{
TSMBuffer bufp;
TSMLoc hdr_loc, newfield_loc;
char *errormsg_body = "All requests from this IP address are redirected.\n";
char *tmp_body;
if (TSHttpTxnClientRespGet(txnp, &bufp, &hdr_loc) != TS_SUCCESS) {
TSError("[%s] Couldn't retrieve client response header", PLUGIN_NAME);
goto done;
}
TSHttpHdrStatusSet(bufp, hdr_loc, TS_HTTP_STATUS_MOVED_PERMANENTLY);
TSHttpHdrReasonSet(bufp, hdr_loc, TSHttpHdrReasonLookup(TS_HTTP_STATUS_MOVED_PERMANENTLY),
strlen(TSHttpHdrReasonLookup(TS_HTTP_STATUS_MOVED_PERMANENTLY)));
TSMimeHdrFieldCreate(bufp, hdr_loc, &newfield_loc); /* Probably should check for errors ... */
TSMimeHdrFieldNameSet(bufp, hdr_loc, newfield_loc, TS_MIME_FIELD_LOCATION, TS_MIME_LEN_LOCATION);
TSMimeHdrFieldValueStringInsert(bufp, hdr_loc, newfield_loc, -1, uri_redirect, strlen(uri_redirect));
TSMimeHdrFieldAppend(bufp, hdr_loc, newfield_loc);
/*
* Note that we can't directly use errormsg_body, as TSHttpTxnErrorBodySet()
* will try to free the passed buffer with TSfree().
*/
tmp_body = TSstrdup(errormsg_body);
TSHttpTxnErrorBodySet(txnp, tmp_body, strlen(tmp_body), NULL);
TSHandleMLocRelease(bufp, hdr_loc, newfield_loc);
TSHandleMLocRelease(bufp, TS_NULL_MLOC, hdr_loc);
done:
TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE);
}
static int
ts_lua_client_response_set_error_resp(lua_State *L)
{
int n, status;
const char *body;
const char *reason;
int reason_len;
size_t body_len;
int resp_len;
char *resp_buf;
TSMLoc field_loc;
ts_lua_http_ctx *http_ctx;
GET_HTTP_CONTEXT(http_ctx, L);
TS_LUA_CHECK_CLIENT_RESPONSE_HDR(http_ctx);
n = lua_gettop(L);
status = luaL_checkinteger(L, 1);
reason = TSHttpHdrReasonLookup(status);
reason_len = strlen(reason);
TSHttpHdrStatusSet(http_ctx->client_response_bufp, http_ctx->client_response_hdrp, status);
TSHttpHdrReasonSet(http_ctx->client_response_bufp, http_ctx->client_response_hdrp, reason, reason_len);
body_len = 0;
if (n == 2) {
body = luaL_checklstring(L, 2, &body_len);
}
if (body_len && body) {
resp_buf = TSmalloc(body_len);
memcpy(resp_buf, body, body_len);
resp_len = body_len;
} else {
resp_buf = TSmalloc(reason_len);
memcpy(resp_buf, reason, reason_len);
resp_len = reason_len;
}
field_loc = TSMimeHdrFieldFind(http_ctx->client_response_bufp, http_ctx->client_response_hdrp, TS_MIME_FIELD_TRANSFER_ENCODING,
TS_MIME_LEN_TRANSFER_ENCODING);
if (field_loc) {
TSMimeHdrFieldDestroy(http_ctx->client_response_bufp, http_ctx->client_response_hdrp, field_loc);
TSHandleMLocRelease(http_ctx->client_response_bufp, http_ctx->client_response_hdrp, field_loc);
}
TSHttpTxnErrorBodySet(http_ctx->txnp, resp_buf, resp_len, NULL);
return 0;
}
static void
handle_response(TSHttpTxn txnp, TSCont contp ATS_UNUSED)
{
TSMBuffer bufp;
TSMLoc hdr_loc;
TSMLoc url_loc;
char *url_str;
char *buf;
int url_length;
if (TSHttpTxnClientRespGet(txnp, &bufp, &hdr_loc) != TS_SUCCESS) {
TSError("[%s] Couldn't retrieve client response header", PLUGIN_NAME);
goto done;
}
TSHttpHdrStatusSet(bufp, hdr_loc, TS_HTTP_STATUS_FORBIDDEN);
TSHttpHdrReasonSet(bufp, hdr_loc, TSHttpHdrReasonLookup(TS_HTTP_STATUS_FORBIDDEN),
strlen(TSHttpHdrReasonLookup(TS_HTTP_STATUS_FORBIDDEN)));
if (TSHttpTxnClientReqGet(txnp, &bufp, &hdr_loc) != TS_SUCCESS) {
TSError("[%s] Couldn't retrieve client request header", PLUGIN_NAME);
TSHandleMLocRelease(bufp, TS_NULL_MLOC, hdr_loc);
goto done;
}
if (TSHttpHdrUrlGet(bufp, hdr_loc, &url_loc) != TS_SUCCESS) {
TSError("[%s] Couldn't retrieve request url", PLUGIN_NAME);
TSHandleMLocRelease(bufp, TS_NULL_MLOC, hdr_loc);
goto done;
}
buf = (char *)TSmalloc(4096);
url_str = TSUrlStringGet(bufp, url_loc, &url_length);
sprintf(buf, "You are forbidden from accessing \"%s\"\n", url_str);
TSfree(url_str);
TSHandleMLocRelease(bufp, hdr_loc, url_loc);
TSHandleMLocRelease(bufp, TS_NULL_MLOC, hdr_loc);
TSHttpTxnErrorBodySet(txnp, buf, strlen(buf), NULL);
done:
TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE);
}
static char *
gen_header(char *status_str, char *mime, int *header_len)
{
TSHttpStatus status;
char * buf = NULL;
status = atoi(status_str);
if (status > 0 && status < 999) {
const char* status_reason;
int len = sizeof(HEADER_TEMPLATE) + 3 + 1;
status_reason = TSHttpHdrReasonLookup(status);
len += strlen(status_reason);
len += strlen(mime);
buf = TSmalloc(len);
*header_len = snprintf(buf, len, HEADER_TEMPLATE, status, status_reason, mime);
} else {
*header_len = 0;
}
return buf;
}
static int
ts_lua_server_response_set_status(lua_State * L)
{
int status;
const char *reason;
int reason_len;
ts_lua_http_ctx *http_ctx;
http_ctx = ts_lua_get_http_ctx(L);
TS_LUA_CHECK_SERVER_RESPONSE_HDR(http_ctx);
status = luaL_checkint(L, 1);
reason = TSHttpHdrReasonLookup(status);
reason_len = strlen(reason);
TSHttpHdrStatusSet(http_ctx->server_response_bufp, http_ctx->server_response_hdrp, status);
TSHttpHdrReasonSet(http_ctx->server_response_bufp, http_ctx->server_response_hdrp, reason, reason_len);
return 0;
}
static int
ts_lua_client_response_set_status(lua_State *L)
{
int status;
const char *reason;
int reason_len;
ts_lua_http_ctx *http_ctx;
GET_HTTP_CONTEXT(http_ctx, L);
TS_LUA_CHECK_CLIENT_RESPONSE_HDR(http_ctx);
status = luaL_checkint(L, 1);
reason = TSHttpHdrReasonLookup(status);
reason_len = strlen(reason);
TSHttpHdrStatusSet(http_ctx->client_response_bufp, http_ctx->client_response_hdrp, status);
TSHttpHdrReasonSet(http_ctx->client_response_bufp, http_ctx->client_response_hdrp, reason, reason_len);
return 0;
}
/**
* Handler function to generate an error response
*/
static void error_response(TSHttpTxn txnp, tsib_txn_ctx *txndata)
{
const char *reason;
TSMBuffer bufp;
TSMLoc hdr_loc;
TSMLoc field_loc;
hdr_list *hdrs;
TSReturnCode rv;
/* make caller responsible for sanity checking */
assert((txndata != NULL) && (txndata->tx != NULL));
reason = TSHttpHdrReasonLookup(txndata->status);
if (TSHttpTxnClientRespGet(txnp, &bufp, &hdr_loc) != TS_SUCCESS) {
ib_log_error_tx(txndata->tx,
"ErrorDoc: couldn't retrieve client response header.");
TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE);
return;
}
rv = TSHttpHdrStatusSet(bufp, hdr_loc, txndata->status);
if (rv != TS_SUCCESS) {
ib_log_error_tx(txndata->tx,
"ErrorDoc: TSHttpHdrStatusSet");
}
if (reason == NULL) {
reason = "Other";
}
rv = TSHttpHdrReasonSet(bufp, hdr_loc, reason, strlen(reason));
if (rv != TS_SUCCESS) {
ib_log_error_tx(txndata->tx,
"ErrorDoc: TSHttpHdrReasonSet");
}
while (hdrs = txndata->err_hdrs, hdrs != 0) {
txndata->err_hdrs = hdrs->next;
rv = TSMimeHdrFieldCreate(bufp, hdr_loc, &field_loc);
if (rv != TS_SUCCESS) {
ib_log_error_tx(txndata->tx,
"ErrorDoc: TSMimeHdrFieldCreate");
continue;
}
rv = TSMimeHdrFieldNameSet(bufp, hdr_loc, field_loc,
hdrs->hdr, strlen(hdrs->hdr));
if (rv != TS_SUCCESS) {
ib_log_error_tx(txndata->tx,
"ErrorDoc: TSMimeHdrFieldNameSet");
goto errordoc_free1;
}
rv = TSMimeHdrFieldValueStringInsert(bufp, hdr_loc, field_loc, -1,
hdrs->value, strlen(hdrs->value));
if (rv != TS_SUCCESS) {
ib_log_error_tx(txndata->tx,
"ErrorDoc: TSMimeHdrFieldValueStringInsert");
goto errordoc_free1;
}
rv = TSMimeHdrFieldAppend(bufp, hdr_loc, field_loc);
if (rv != TS_SUCCESS) {
ib_log_error_tx(txndata->tx,
"ErrorDoc: TSMimeHdrFieldAppend");
goto errordoc_free1;
}
errordoc_free1:
rv = TSHandleMLocRelease(bufp, hdr_loc, field_loc);
if (rv != TS_SUCCESS) {
ib_log_error_tx(txndata->tx,
"ErrorDoc: TSHandleMLocRelease 1");
continue;
}
}
if (txndata->err_body) {
/* this will free the body, so copy it first! */
TSHttpTxnErrorBodySet(txnp, txndata->err_body,
txndata->err_body_len, NULL);
}
rv = TSHandleMLocRelease(bufp, TS_NULL_MLOC, hdr_loc);
if (rv != TS_SUCCESS) {
ib_log_error_tx(txndata->tx,
"ErrorDoc: TSHandleMLocRelease 2");
}
ib_log_debug_tx(txndata->tx,
"Sent error page %d \"%s\".", txndata->status, reason);
}