static ngx_int_t
ngx_http_lua_header_filter(ngx_http_request_t *r)
{
ngx_http_lua_loc_conf_t *llcf;
ngx_http_lua_ctx_t *ctx;
ngx_int_t rc;
ngx_http_cleanup_t *cln;
uint8_t old_context;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua header filter for user lua code, uri \"%V\"", &r->uri);
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->body_filter_handler) {
r->filter_need_in_memory = 1;
}
if (llcf->header_filter_handler == NULL) {
dd("no header filter handler found");
return ngx_http_next_header_filter(r);
}
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
dd("ctx = %p", ctx);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_ERROR;
}
}
if (ctx->cleanup == NULL) {
cln = ngx_http_cleanup_add(r, 0);
if (cln == NULL) {
return NGX_ERROR;
}
cln->handler = ngx_http_lua_request_cleanup;
cln->data = r;
ctx->cleanup = &cln->handler;
}
old_context = ctx->context;
ctx->context = NGX_HTTP_LUA_CONTEXT_HEADER_FILTER;
dd("calling header filter handler");
rc = llcf->header_filter_handler(r);
ctx->context = old_context;
if (rc != NGX_OK) {
dd("calling header filter handler rc %d", (int)rc);
return NGX_ERROR;
}
return ngx_http_next_header_filter(r);
}
static ngx_int_t
ngx_http_lua_set_by_lua_init(ngx_http_request_t *r)
{
lua_State *L;
ngx_http_lua_ctx_t *ctx;
ngx_http_cleanup_t *cln;
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_ERROR;
}
} else {
L = ngx_http_lua_get_lua_vm(r, ctx);
ngx_http_lua_reset_ctx(r, L, ctx);
}
if (ctx->cleanup == NULL) {
cln = ngx_http_cleanup_add(r, 0);
if (cln == NULL) {
return NGX_ERROR;
}
cln->handler = ngx_http_lua_request_cleanup_handler;
cln->data = ctx;
ctx->cleanup = &cln->handler;
}
ctx->context = NGX_HTTP_LUA_CONTEXT_SET;
return NGX_OK;
}
ngx_int_t
ngx_http_lua_log_handler(ngx_http_request_t *r)
{
ngx_http_lua_loc_conf_t *llcf;
ngx_http_lua_ctx_t *ctx;
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua log handler, uri:\"%V\" c:%ud", &r->uri,
r->main->count);
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->log_handler == NULL) {
dd("no log handler found");
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
dd("ctx = %p", ctx);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_ERROR;
}
}
ctx->context = NGX_HTTP_LUA_CONTEXT_LOG;
dd("calling log handler");
return llcf->log_handler(r);
}
ngx_int_t
ngx_http_lua_log_handler(ngx_http_request_t *r)
{
ngx_http_lua_main_conf_t *lmcf;
ngx_http_lua_loc_conf_t *llcf;
ngx_int_t rc;
lua_State *L;
ngx_http_lua_ctx_t *ctx;
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua log handler, uri:\"%V\" c:%ud", &r->uri,
r->main->count);
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->log_handler == NULL) {
dd("no log handler found");
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
dd("ctx = %p", ctx);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_ERROR;
}
}
ctx->context = NGX_HTTP_LUA_CONTEXT_LOG;
dd("calling log handler");
rc = llcf->log_handler(r);
/* we must release the ngx.ctx table here because request cleanup runs
* before log phase handlers */
if (ctx->ctx_ref != LUA_NOREF) {
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua release ngx.ctx");
lmcf = ngx_http_get_module_main_conf(r, ngx_http_lua_module);
L = lmcf->lua;
lua_pushlightuserdata(L, &ngx_http_lua_ctx_tables_key);
lua_rawget(L, LUA_REGISTRYINDEX);
luaL_unref(L, -1, ctx->ctx_ref);
ctx->ctx_ref = LUA_NOREF;
lua_pop(L, 1);
}
return rc;
}
ngx_int_t
ngx_http_lua_log_handler(ngx_http_request_t *r)
{
ngx_http_lua_loc_conf_t *llcf;
ngx_int_t rc;
lua_State *L;
ngx_http_lua_ctx_t *ctx;
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua log handler, uri:\"%V\" c:%ud", &r->uri,
r->main->count);
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->log_handler == NULL) {
dd("no log handler found");
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
dd("ctx = %p", ctx);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_ERROR;
}
}
ctx->context = NGX_HTTP_LUA_CONTEXT_LOG;
dd("calling log handler");
rc = llcf->log_handler(r);
/* we must release the ngx.ctx table here because request cleanup runs
* before log phase handlers */
if (ctx->ctx_ref != LUA_NOREF) {
L = ngx_http_lua_get_lua_vm(r, ctx);
ngx_http_lua_release_ngx_ctx_table(r->connection->log, L, ctx);
}
return rc;
}
static ngx_int_t
ngx_http_lua_balancer_get_peer(ngx_peer_connection_t *pc, void *data)
{
lua_State *L;
ngx_int_t rc;
ngx_http_request_t *r;
ngx_http_lua_ctx_t *ctx;
ngx_http_lua_srv_conf_t *lscf;
ngx_http_lua_main_conf_t *lmcf;
ngx_http_lua_balancer_peer_data_t *bp = data;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0,
"lua balancer peer, tries: %ui", pc->tries);
lscf = bp->conf;
r = bp->request;
ngx_http_lua_assert(lscf->balancer.handler && r);
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_ERROR;
}
L = ngx_http_lua_get_lua_vm(r, ctx);
} else {
L = ngx_http_lua_get_lua_vm(r, ctx);
dd("reset ctx");
ngx_http_lua_reset_ctx(r, L, ctx);
}
ctx->context = NGX_HTTP_LUA_CONTEXT_BALANCER;
bp->sockaddr = NULL;
bp->socklen = 0;
bp->more_tries = 0;
bp->total_tries++;
lmcf = ngx_http_get_module_main_conf(r, ngx_http_lua_module);
/* balancer_by_lua does not support yielding and
* there cannot be any conflicts among concurrent requests,
* thus it is safe to store the peer data in the main conf.
*/
lmcf->balancer_peer_data = bp;
rc = lscf->balancer.handler(r, lscf, L);
if (rc == NGX_ERROR) {
return NGX_ERROR;
}
if (ctx->exited && ctx->exit_code != NGX_OK) {
rc = ctx->exit_code;
if (rc == NGX_ERROR
|| rc == NGX_BUSY
|| rc == NGX_DECLINED
#ifdef HAVE_BALANCER_STATUS_CODE_PATCH
|| rc >= NGX_HTTP_SPECIAL_RESPONSE
#endif
) {
return rc;
}
if (rc > NGX_OK) {
return NGX_ERROR;
}
}
if (bp->sockaddr && bp->socklen) {
pc->sockaddr = bp->sockaddr;
pc->socklen = bp->socklen;
pc->cached = 0;
pc->connection = NULL;
pc->name = bp->host;
bp->rrp.peers->single = 0;
if (bp->more_tries) {
r->upstream->peer.tries += bp->more_tries;
}
dd("tries: %d", (int) r->upstream->peer.tries);
return NGX_OK;
}
return ngx_http_upstream_get_round_robin_peer(pc, &bp->rrp);
}
ngx_int_t
ngx_http_lua_access_handler(ngx_http_request_t *r)
{
ngx_int_t rc;
ngx_http_lua_ctx_t *ctx;
ngx_http_lua_loc_conf_t *llcf;
ngx_http_lua_main_conf_t *lmcf;
ngx_http_phase_handler_t tmp, *ph, *cur_ph, *last_ph;
ngx_http_core_main_conf_t *cmcf;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua access handler, uri \"%V\"", &r->uri);
lmcf = ngx_http_get_module_main_conf(r, ngx_http_lua_module);
if (!lmcf->postponed_to_access_phase_end) {
lmcf->postponed_to_access_phase_end = 1;
cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
ph = cmcf->phase_engine.handlers;
cur_ph = &ph[r->phase_handler];
/* we should skip the post_access phase handler here too */
last_ph = &ph[cur_ph->next - 2];
dd("ph cur: %d, ph next: %d", (int) r->phase_handler,
(int) (cur_ph->next - 2));
#if 0
if (cur_ph == last_ph) {
dd("XXX our handler is already the last access phase handler");
}
#endif
if (cur_ph < last_ph) {
dd("swaping the contents of cur_ph and last_ph...");
tmp = *cur_ph;
memmove(cur_ph, cur_ph + 1,
(last_ph - cur_ph) * sizeof (ngx_http_phase_handler_t));
*last_ph = tmp;
r->phase_handler--; /* redo the current ph */
return NGX_DECLINED;
}
}
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->access_handler == NULL) {
dd("no access handler found");
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
dd("ctx = %p", ctx);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
}
dd("entered? %d", (int) ctx->entered_access_phase);
if (ctx->entered_access_phase) {
dd("calling wev handler");
rc = ctx->resume_handler(r);
dd("wev handler returns %d", (int) rc);
if (rc == NGX_ERROR || rc == NGX_DONE || rc >= NGX_OK) {
return rc;
}
return NGX_DECLINED;
}
if (ctx->waiting_more_body) {
dd("WAITING MORE BODY");
return NGX_DONE;
}
if (llcf->force_read_body && !ctx->read_body_done) {
r->request_body_in_single_buf = 1;
r->request_body_in_persistent_file = 1;
r->request_body_in_clean_file = 1;
rc = ngx_http_read_client_request_body(r,
ngx_http_lua_generic_phase_post_read);
if (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE) {
return rc;
}
if (rc == NGX_AGAIN) {
ctx->waiting_more_body = 1;
return NGX_DONE;
}
}
dd("calling access handler");
return llcf->access_handler(r);
}
ngx_int_t
ngx_http_lua_log_handler(ngx_http_request_t *r)
{
#if (NGX_HTTP_LUA_HAVE_MALLOC_TRIM)
ngx_uint_t trim_cycle, trim_nreq;
ngx_http_lua_main_conf_t *lmcf;
#endif
ngx_http_lua_loc_conf_t *llcf;
ngx_http_lua_ctx_t *ctx;
#if (NGX_HTTP_LUA_HAVE_MALLOC_TRIM)
lmcf = ngx_http_get_module_main_conf(r, ngx_http_lua_module);
trim_cycle = lmcf->malloc_trim_cycle;
if (trim_cycle > 0) {
dd("cycle: %d", (int) trim_cycle);
trim_nreq = ++lmcf->malloc_trim_req_count;
if (trim_nreq >= trim_cycle) {
lmcf->malloc_trim_req_count = 0;
#if (NGX_DEBUG)
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"malloc_trim(1) returned %d", malloc_trim(1));
#else
(void) malloc_trim(1);
#endif
}
}
# if (NGX_DEBUG)
else {
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"malloc_trim() disabled");
}
# endif
#endif
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua log handler, uri:\"%V\" c:%ud", &r->uri,
r->main->count);
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->log_handler == NULL) {
dd("no log handler found");
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
dd("ctx = %p", ctx);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_ERROR;
}
}
ctx->context = NGX_HTTP_LUA_CONTEXT_LOG;
dd("calling log handler");
return llcf->log_handler(r);
}
ngx_int_t
ngx_http_lua_content_by_chunk(lua_State *L, ngx_http_request_t *r)
{
int co_ref;
ngx_int_t rc;
lua_State *co;
ngx_http_lua_ctx_t *ctx;
ngx_http_cleanup_t *cln;
ngx_http_lua_loc_conf_t *llcf;
dd("content by chunk");
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
} else {
dd("reset ctx");
ngx_http_lua_reset_ctx(r, L, ctx);
}
ctx->entered_content_phase = 1;
/* {{{ new coroutine to handle request */
co = ngx_http_lua_new_thread(r, L, &co_ref);
if (co == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"lua: failed to create new coroutine to handle request");
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
/* move code closure to new coroutine */
lua_xmove(L, co, 1);
/* set closure's env table to new coroutine's globals table */
lua_pushvalue(co, LUA_GLOBALSINDEX);
lua_setfenv(co, -2);
/* save nginx request in coroutine globals table */
ngx_http_lua_set_req(co, r);
ctx->cur_co_ctx = &ctx->entry_co_ctx;
ctx->cur_co_ctx->co = co;
ctx->cur_co_ctx->co_ref = co_ref;
/* {{{ register request cleanup hooks */
if (ctx->cleanup == NULL) {
cln = ngx_http_cleanup_add(r, 0);
if (cln == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
cln->handler = ngx_http_lua_request_cleanup_handler;
cln->data = r;
ctx->cleanup = &cln->handler;
}
/* }}} */
ctx->context = NGX_HTTP_LUA_CONTEXT_CONTENT;
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->check_client_abort) {
r->read_event_handler = ngx_http_lua_rd_check_broken_connection;
} else {
r->read_event_handler = ngx_http_block_reading;
}
rc = ngx_http_lua_run_thread(L, r, ctx, 0);
if (rc == NGX_ERROR || rc >= NGX_OK) {
return rc;
}
if (rc == NGX_AGAIN) {
return ngx_http_lua_content_run_posted_threads(L, r, ctx, 0);
}
if (rc == NGX_DONE) {
return ngx_http_lua_content_run_posted_threads(L, r, ctx, 1);
}
return NGX_OK;
}
ngx_int_t
ngx_http_lua_init_worker(ngx_cycle_t *cycle)
{
char *rv;
void *cur, *prev;
ngx_uint_t i;
ngx_conf_t conf;
ngx_cycle_t *fake_cycle;
ngx_open_file_t *file, *ofile;
ngx_list_part_t *part;
ngx_connection_t *c = NULL;
ngx_http_module_t *module;
ngx_http_request_t *r = NULL;
ngx_http_lua_ctx_t *ctx;
ngx_http_conf_ctx_t *conf_ctx, http_ctx;
ngx_http_lua_loc_conf_t *llcf, *top_llcf;
ngx_http_lua_main_conf_t *lmcf;
ngx_http_core_loc_conf_t *clcf, *top_clcf;
lmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_lua_module);
if (lmcf == NULL
|| lmcf->init_worker_handler == NULL
|| lmcf->lua == NULL)
{
return NGX_OK;
}
conf_ctx = ((ngx_http_conf_ctx_t *) cycle->conf_ctx[ngx_http_module.index]);
http_ctx.main_conf = conf_ctx->main_conf;
top_clcf = conf_ctx->loc_conf[ngx_http_core_module.ctx_index];
top_llcf = conf_ctx->loc_conf[ngx_http_lua_module.ctx_index];
ngx_memzero(&conf, sizeof(ngx_conf_t));
conf.temp_pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, cycle->log);
if (conf.temp_pool == NULL) {
return NGX_ERROR;
}
conf.temp_pool->log = cycle->log;
/* we fake a temporary ngx_cycle_t here because some
* modules' merge conf handler may produce side effects in
* cf->cycle (like ngx_proxy vs cf->cycle->paths).
* also, we cannot allocate our temp cycle on the stack
* because some modules like ngx_http_core_module reference
* addresses within cf->cycle (i.e., via "&cf->cycle->new_log")
*/
fake_cycle = ngx_palloc(cycle->pool, sizeof(ngx_cycle_t));
if (fake_cycle == NULL) {
goto failed;
}
ngx_memcpy(fake_cycle, cycle, sizeof(ngx_cycle_t));
#if defined(nginx_version) && nginx_version >= 9007
ngx_queue_init(&fake_cycle->reusable_connections_queue);
#endif
if (ngx_array_init(&fake_cycle->listening, cycle->pool,
cycle->listening.nelts || 1,
sizeof(ngx_listening_t))
!= NGX_OK)
{
goto failed;
}
#if defined(nginx_version) && nginx_version >= 1003007
if (ngx_array_init(&fake_cycle->paths, cycle->pool, cycle->paths.nelts || 1,
sizeof(ngx_path_t *))
!= NGX_OK)
{
goto failed;
}
#endif
part = &cycle->open_files.part;
ofile = part->elts;
if (ngx_list_init(&fake_cycle->open_files, cycle->pool, part->nelts || 1,
sizeof(ngx_open_file_t))
!= NGX_OK)
{
goto failed;
}
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
ofile = part->elts;
i = 0;
}
file = ngx_list_push(&fake_cycle->open_files);
if (file == NULL) {
goto failed;
}
ngx_memcpy(file, ofile, sizeof(ngx_open_file_t));
}
if (ngx_list_init(&fake_cycle->shared_memory, cycle->pool, 1,
sizeof(ngx_shm_zone_t))
!= NGX_OK)
{
goto failed;
}
conf.ctx = &http_ctx;
conf.cycle = fake_cycle;
conf.pool = fake_cycle->pool;
conf.log = cycle->log;
http_ctx.loc_conf = ngx_pcalloc(conf.pool,
sizeof(void *) * ngx_http_max_module);
if (http_ctx.loc_conf == NULL) {
return NGX_ERROR;
}
http_ctx.srv_conf = ngx_pcalloc(conf.pool,
sizeof(void *) * ngx_http_max_module);
if (http_ctx.srv_conf == NULL) {
return NGX_ERROR;
}
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_HTTP_MODULE) {
continue;
}
module = ngx_modules[i]->ctx;
if (module->create_srv_conf) {
cur = module->create_srv_conf(&conf);
if (cur == NULL) {
return NGX_ERROR;
}
if (module->merge_srv_conf) {
prev = module->create_srv_conf(&conf);
if (prev == NULL) {
return NGX_ERROR;
}
rv = module->merge_srv_conf(&conf, prev, cur);
if (rv != NGX_CONF_OK) {
goto failed;
}
}
http_ctx.srv_conf[ngx_modules[i]->ctx_index] = cur;
}
if (module->create_loc_conf) {
cur = module->create_loc_conf(&conf);
if (cur == NULL) {
return NGX_ERROR;
}
if (module->merge_loc_conf) {
prev = module->create_loc_conf(&conf);
if (prev == NULL) {
return NGX_ERROR;
}
rv = module->merge_loc_conf(&conf, prev, cur);
if (rv != NGX_CONF_OK) {
goto failed;
}
}
http_ctx.loc_conf[ngx_modules[i]->ctx_index] = cur;
}
}
ngx_destroy_pool(conf.temp_pool);
conf.temp_pool = NULL;
c = ngx_http_lua_create_fake_connection(NULL);
if (c == NULL) {
goto failed;
}
c->log->handler = ngx_http_lua_log_init_worker_error;
r = ngx_http_lua_create_fake_request(c);
if (r == NULL) {
goto failed;
}
r->main_conf = http_ctx.main_conf;
r->srv_conf = http_ctx.srv_conf;
r->loc_conf = http_ctx.loc_conf;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
#if defined(nginx_version) && nginx_version >= 1003014
ngx_http_set_connection_log(r->connection, clcf->error_log);
#else
c->log->file = clcf->error_log->file;
if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
c->log->log_level = clcf->error_log->log_level;
}
#endif
if (top_clcf->resolver) {
clcf->resolver = top_clcf->resolver;
}
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
goto failed;
}
ctx->context = NGX_HTTP_LUA_CONTEXT_INIT_WORKER;
ctx->cur_co_ctx = NULL;
r->read_event_handler = ngx_http_block_reading;
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (top_llcf->log_socket_errors != NGX_CONF_UNSET) {
llcf->log_socket_errors = top_llcf->log_socket_errors;
}
ngx_http_lua_set_req(lmcf->lua, r);
(void) lmcf->init_worker_handler(cycle->log, lmcf, lmcf->lua);
ngx_destroy_pool(c->pool);
return NGX_OK;
failed:
if (conf.temp_pool) {
ngx_destroy_pool(conf.temp_pool);
}
if (c) {
ngx_http_lua_close_fake_connection(c);
}
return NGX_ERROR;
}
/* initialize lua coroutine for caching new SSL session */
static ngx_int_t
ngx_http_lua_ssl_sess_store_by_chunk(lua_State *L, ngx_http_request_t *r)
{
size_t len;
u_char *err_msg;
ngx_int_t rc;
ngx_http_lua_ctx_t *ctx;
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
} else {
dd("reset ctx");
ngx_http_lua_reset_ctx(r, L, ctx);
}
ctx->entered_content_phase = 1;
ctx->context = NGX_HTTP_LUA_CONTEXT_SSL_SESS_STORE;
/* init nginx context in Lua VM */
ngx_http_lua_set_req(L, r);
ngx_http_lua_create_new_globals_table(L, 0 /* narr */, 1 /* nrec */);
/* {{{ make new env inheriting main thread's globals table */
lua_createtable(L, 0, 1 /* nrec */); /* the metatable for the new env */
ngx_http_lua_get_globals_table(L);
lua_setfield(L, -2, "__index");
lua_setmetatable(L, -2); /* setmetatable({}, {__index = _G}) */
/* }}} */
lua_setfenv(L, -2); /* set new running env for the code closure */
lua_pushcfunction(L, ngx_http_lua_traceback);
lua_insert(L, 1); /* put it under chunk and args */
/* protected call user code */
rc = lua_pcall(L, 0, 1, 1);
lua_remove(L, 1); /* remove traceback function */
dd("rc == %d", (int) rc);
if (rc != 0) {
/* error occured when running loaded code */
err_msg = (u_char *) lua_tolstring(L, -1, &len);
if (err_msg == NULL) {
err_msg = (u_char *) "unknown reason";
len = sizeof("unknown reason") - 1;
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to run session_store_by_lua*: %*s", len, err_msg);
lua_settop(L, 0); /* clear remaining elems on stack */
ngx_http_lua_finalize_request(r, rc);
return NGX_ERROR;
}
lua_settop(L, 0); /* clear remaining elems on stack */
ngx_http_lua_finalize_request(r, rc);
return rc;
}
ngx_int_t
ngx_http_lua_set_by_chunk(lua_State *L, ngx_http_request_t *r, ngx_str_t *val,
ngx_http_variable_value_t *args, size_t nargs, ngx_str_t *script)
{
size_t i;
ngx_int_t rc;
u_char *err_msg;
size_t len;
u_char *data;
#if (NGX_PCRE)
ngx_pool_t *old_pool;
#endif
ngx_http_lua_ctx_t *ctx;
ngx_http_cleanup_t *cln;
dd("nargs: %d", (int) nargs);
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_ERROR;
}
} else {
ngx_http_lua_reset_ctx(r, L, ctx);
}
if (ctx->cleanup == NULL) {
cln = ngx_http_cleanup_add(r, 0);
if (cln == NULL) {
return NGX_ERROR;
}
cln->handler = ngx_http_lua_request_cleanup;
cln->data = r;
ctx->cleanup = &cln->handler;
}
ctx->context = NGX_HTTP_LUA_CONTEXT_SET;
dd("set Lua VM panic handler");
lua_atpanic(L, ngx_http_lua_atpanic);
NGX_LUA_EXCEPTION_TRY {
dd("initialize nginx context in Lua VM, code chunk at "
"stack top sp = 1");
ngx_http_lua_set_by_lua_env(L, r, nargs, args);
/* passing directive arguments to the user code */
for (i = 0; i < nargs; i++) {
lua_pushlstring(L, (const char *) args[i].data, args[i].len);
}
#if (NGX_PCRE)
/* XXX: work-around to nginx regex subsystem */
old_pool = ngx_http_lua_pcre_malloc_init(r->pool);
#endif
lua_pushcfunction(L, ngx_http_lua_traceback);
lua_insert(L, 1); /* put it under chunk and args */
dd("protected call user code");
rc = lua_pcall(L, nargs, 1, 1);
dd("after protected call user code");
lua_remove(L, 1); /* remove traceback function */
#if (NGX_PCRE)
/* XXX: work-around to nginx regex subsystem */
ngx_http_lua_pcre_malloc_done(old_pool);
#endif
if (rc != 0) {
/* error occured when running loaded code */
err_msg = (u_char *) lua_tolstring(L, -1, &len);
if (err_msg == NULL) {
err_msg = (u_char *) "unknown reason";
len = sizeof("unknown reason") - 1;
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to run set_by_lua*: %*s", len, err_msg);
lua_settop(L, 0); /* clear remaining elems on stack */
return NGX_ERROR;
}
data = (u_char *) lua_tolstring(L, -1, &len);
if (data) {
val->data = ngx_palloc(r->pool, len);
if (val->data == NULL) {
return NGX_ERROR;
}
ngx_memcpy(val->data, data, len);
val->len = len;
} else {
val->data = NULL;
val->len = 0;
}
} NGX_LUA_EXCEPTION_CATCH {
dd("nginx execution restored");
return NGX_ERROR;
}
/* clear Lua stack */
lua_settop(L, 0);
return NGX_OK;
}
static ngx_int_t
ngx_http_lua_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
{
ngx_http_lua_loc_conf_t *llcf;
ngx_http_lua_ctx_t *ctx;
ngx_int_t rc;
uint16_t old_context;
ngx_http_cleanup_t *cln;
lua_State *L;
ngx_buf_t *b;
ngx_chain_t *out, *cl;
ngx_buf_tag_t tag;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua body filter for user lua code, uri \"%V\"", &r->uri);
if (in == NULL) {
return ngx_http_next_body_filter(r, in);
}
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->body_filter_handler == NULL) {
dd("no body filter handler found");
return ngx_http_next_body_filter(r, in);
}
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
dd("ctx = %p", ctx);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_ERROR;
}
}
if (ctx->seen_last_in_filter) {
for (/* void */; in; in = in->next) {
dd("mark the buf as consumed: %d", (int) ngx_buf_size(in->buf));
in->buf->pos = in->buf->last;
in->buf->file_pos = in->buf->file_last;
}
return NGX_OK;
}
if (ctx->cleanup == NULL) {
cln = ngx_http_cleanup_add(r, 0);
if (cln == NULL) {
return NGX_ERROR;
}
cln->handler = ngx_http_lua_request_cleanup_handler;
cln->data = ctx;
ctx->cleanup = &cln->handler;
}
old_context = ctx->context;
ctx->context = NGX_HTTP_LUA_CONTEXT_BODY_FILTER;
dd("calling body filter handler");
rc = llcf->body_filter_handler(r, in);
dd("calling body filter handler returned %d", (int) rc);
ctx->context = old_context;
if (rc != NGX_OK) {
return NGX_ERROR;
}
L = ngx_http_lua_get_lua_vm(r, ctx);
lua_getglobal(L, ngx_http_lua_chain_key);
out = lua_touserdata(L, -1);
lua_pop(L, 1);
#if 1
for (cl = out; cl; cl = cl->next) {
b = cl->buf;
if (b->last == b->pos && !b->last_buf && !b->last_in_chain) {
/* skip leading zero-size bufs because they can stuck in the buffer
* of ngx_http_write_filter_module (that is, being busy) but get
* still recycled by the buffer generator
* (usually being the content handler module) at the same
* time, which can lead to buffer corruptions. */
/* FIXME we should handle the "flush" flag properly here
* now we just discard it if it is set in these zero-size bufs. */
continue;
}
break;
}
#endif
if (in == out) {
return ngx_http_next_body_filter(r, cl);
}
/* in != out */
rc = ngx_http_next_body_filter(r, cl);
if (rc == NGX_ERROR) {
return NGX_ERROR;
}
tag = (ngx_buf_tag_t) &ngx_http_lua_module;
#if nginx_version >= 1001004
ngx_chain_update_chains(r->pool,
#else
ngx_chain_update_chains(
#endif
&ctx->free_bufs, &ctx->busy_bufs, &out, tag);
return rc;
}
/* initialize lua coroutine for fetching cached session */
static ngx_int_t
ngx_http_lua_ssl_sess_fetch_by_chunk(lua_State *L, ngx_http_request_t *r)
{
int co_ref;
ngx_int_t rc;
lua_State *co;
ngx_http_lua_ctx_t *ctx;
ngx_http_cleanup_t *cln;
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
rc = NGX_ERROR;
ngx_http_lua_finalize_request(r, rc);
return rc;
}
} else {
dd("reset ctx");
ngx_http_lua_reset_ctx(r, L, ctx);
}
ctx->entered_content_phase = 1;
/* {{{ new coroutine to handle request */
co = ngx_http_lua_new_thread(r, L, &co_ref);
if (co == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"lua: failed to create new coroutine to handle request");
rc = NGX_ERROR;
ngx_http_lua_finalize_request(r, rc);
return rc;
}
/* move code closure to new coroutine */
lua_xmove(L, co, 1);
/* set closure's env table to new coroutine's globals table */
ngx_http_lua_get_globals_table(co);
lua_setfenv(co, -2);
/* save nginx request in coroutine globals table */
ngx_http_lua_set_req(co, r);
ctx->cur_co_ctx = &ctx->entry_co_ctx;
ctx->cur_co_ctx->co = co;
ctx->cur_co_ctx->co_ref = co_ref;
#ifdef NGX_LUA_USE_ASSERT
ctx->cur_co_ctx->co_top = 1;
#endif
/* register request cleanup hooks */
if (ctx->cleanup == NULL) {
cln = ngx_http_cleanup_add(r, 0);
if (cln == NULL) {
rc = NGX_ERROR;
ngx_http_lua_finalize_request(r, rc);
return rc;
}
cln->handler = ngx_http_lua_request_cleanup_handler;
cln->data = ctx;
ctx->cleanup = &cln->handler;
}
ctx->context = NGX_HTTP_LUA_CONTEXT_SSL_SESS_FETCH;
rc = ngx_http_lua_run_thread(L, r, ctx, 0);
if (rc == NGX_ERROR || rc >= NGX_OK) {
/* do nothing */
} else if (rc == NGX_AGAIN) {
rc = ngx_http_lua_content_run_posted_threads(L, r, ctx, 0);
} else if (rc == NGX_DONE) {
rc = ngx_http_lua_content_run_posted_threads(L, r, ctx, 1);
} else {
rc = NGX_OK;
}
ngx_http_lua_finalize_request(r, rc);
return rc;
}
static void
ngx_http_lua_timer_handler(ngx_event_t *ev)
{
int n;
lua_State *L;
ngx_int_t rc;
ngx_log_t *log;
ngx_connection_t *c = NULL, *saved_c = NULL;
ngx_http_request_t *r = NULL;
ngx_http_lua_ctx_t *ctx;
ngx_http_cleanup_t *cln;
ngx_http_log_ctx_t *logctx;
ngx_http_lua_timer_ctx_t tctx;
ngx_http_lua_main_conf_t *lmcf;
ngx_http_core_loc_conf_t *clcf;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
"lua ngx.timer expired");
ngx_memcpy(&tctx, ev->data, sizeof(ngx_http_lua_timer_ctx_t));
ngx_free(ev);
ev = NULL;
lmcf = tctx.lmcf;
lmcf->pending_timers--;
if (lmcf->running_timers >= lmcf->max_running_timers) {
ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0,
"%i lua_max_running_timers are not enough",
lmcf->max_running_timers);
goto abort;
}
/* create the fake connection (we temporarily use a valid fd (0) to make
ngx_get_connection happy) */
if (ngx_cycle->files) {
saved_c = ngx_cycle->files[0];
}
c = ngx_get_connection(0, ngx_cycle->log);
if (ngx_cycle->files) {
ngx_cycle->files[0] = saved_c;
}
if (c == NULL) {
goto abort;
}
c->fd = -1;
c->pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, c->log);
if (c->pool == NULL) {
goto abort;
}
log = ngx_pcalloc(c->pool, sizeof(ngx_log_t));
if (log == NULL) {
goto abort;
}
logctx = ngx_palloc(c->pool, sizeof(ngx_http_log_ctx_t));
if (logctx == NULL) {
goto abort;
}
dd("c pool allocated: %d", (int) (sizeof(ngx_log_t)
+ sizeof(ngx_http_log_ctx_t) + sizeof(ngx_http_request_t)));
logctx->connection = c;
logctx->request = NULL;
logctx->current_request = NULL;
c->log = log;
c->log->connection = c->number;
c->log->handler = ngx_http_lua_log_timer_error;
c->log->data = logctx;
c->log->action = NULL;
c->log_error = NGX_ERROR_INFO;
#if 0
c->buffer = ngx_create_temp_buf(c->pool, 2);
if (c->buffer == NULL) {
goto abort;
}
c->buffer->start[0] = CR;
c->buffer->start[1] = LF;
#endif
/* create the fake request */
r = ngx_pcalloc(c->pool, sizeof(ngx_http_request_t));
if (r == NULL) {
goto abort;
}
c->requests++;
logctx->request = r;
logctx->current_request = r;
r->pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, c->log);
if (r->pool == NULL) {
goto abort;
}
dd("r pool allocated: %d", (int) (sizeof(ngx_http_lua_ctx_t)
+ sizeof(void *) * ngx_http_max_module + sizeof(ngx_http_cleanup_t)));
#if 0
hc = ngx_pcalloc(c->pool, sizeof(ngx_http_connection_t));
if (hc == NULL) {
goto abort;
}
r->header_in = c->buffer;
r->header_end = c->buffer->start;
if (ngx_list_init(&r->headers_out.headers, r->pool, 0,
sizeof(ngx_table_elt_t))
!= NGX_OK)
{
goto abort;
}
if (ngx_list_init(&r->headers_in.headers, r->pool, 0,
sizeof(ngx_table_elt_t))
!= NGX_OK)
{
goto abort;
}
#endif
r->ctx = ngx_pcalloc(r->pool, sizeof(void *) * ngx_http_max_module);
if (r->ctx == NULL) {
goto abort;
}
#if 0
cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
r->variables = ngx_pcalloc(r->pool, cmcf->variables.nelts
* sizeof(ngx_http_variable_value_t));
if (r->variables == NULL) {
goto abort;
}
#endif
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
goto abort;
}
r->headers_in.content_length_n = 0;
c->data = r;
#if 0
hc->request = r;
r->http_connection = hc;
#endif
r->signature = NGX_HTTP_MODULE;
r->connection = c;
r->main = r;
r->count = 1;
r->method = NGX_HTTP_UNKNOWN;
r->headers_in.keep_alive_n = -1;
r->uri_changes = NGX_HTTP_MAX_URI_CHANGES + 1;
r->subrequests = NGX_HTTP_MAX_SUBREQUESTS + 1;
r->http_state = NGX_HTTP_PROCESS_REQUEST_STATE;
r->discard_body = 1;
r->main_conf = tctx.main_conf;
r->srv_conf = tctx.srv_conf;
r->loc_conf = tctx.loc_conf;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
c->log->file = clcf->error_log->file;
if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
c->log->log_level = clcf->error_log->log_level;
}
c->error = 1;
ctx->cur_co_ctx = &ctx->entry_co_ctx;
L = lmcf->lua;
cln = ngx_http_cleanup_add(r, 0);
if (cln == NULL) {
goto abort;
}
cln->handler = ngx_http_lua_request_cleanup;
cln->data = r;
ctx->cleanup = &cln->handler;
ctx->entered_content_phase = 1;
ctx->context = NGX_HTTP_LUA_CONTEXT_TIMER;
r->read_event_handler = ngx_http_block_reading;
ctx->cur_co_ctx->co_ref = tctx.co_ref;
ctx->cur_co_ctx->co = tctx.co;
ctx->cur_co_ctx->co_status = NGX_HTTP_LUA_CO_RUNNING;
dd("r connection: %p, log %p", r->connection, r->connection->log);
/* save the request in coroutine globals table */
ngx_http_lua_set_req(tctx.co, r);
lmcf->running_timers++;
lua_pushboolean(tctx.co, tctx.premature);
n = lua_gettop(tctx.co);
if (n > 2) {
lua_insert(tctx.co, 2);
}
rc = ngx_http_lua_run_thread(L, r, ctx, n - 1);
dd("timer lua run thread: %d", (int) rc);
if (rc == NGX_ERROR || rc >= NGX_OK) {
/* do nothing */
} else if (rc == NGX_AGAIN) {
rc = ngx_http_lua_content_run_posted_threads(L, r, ctx, 0);
} else if (rc == NGX_DONE) {
rc = ngx_http_lua_content_run_posted_threads(L, r, ctx, 1);
} else {
rc = NGX_OK;
}
ngx_http_lua_finalize_request(r, rc);
return;
abort:
if (tctx.co_ref && tctx.co) {
lua_pushlightuserdata(tctx.co, &ngx_http_lua_coroutines_key);
lua_rawget(tctx.co, LUA_REGISTRYINDEX);
luaL_unref(tctx.co, -1, tctx.co_ref);
lua_settop(tctx.co, 0);
}
if (r && r->pool) {
ngx_destroy_pool(r->pool);
}
if (c) {
ngx_http_lua_close_fake_connection(c);
}
}
ngx_int_t
ngx_http_lua_content_handler(ngx_http_request_t *r)
{
ngx_http_lua_loc_conf_t *llcf;
ngx_http_lua_ctx_t *ctx;
ngx_int_t rc;
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua content handler, uri:\"%V\" c:%ud", &r->uri,
r->main->count);
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->content_handler == NULL) {
dd("no content handler found");
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
dd("ctx = %p", ctx);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
}
dd("entered? %d", (int) ctx->entered_content_phase);
if (ctx->waiting_more_body) {
return NGX_DONE;
}
if (ctx->entered_content_phase) {
dd("calling wev handler");
rc = ctx->resume_handler(r);
dd("wev handler returns %d", (int) rc);
return rc;
}
if (llcf->force_read_body && !ctx->read_body_done) {
r->request_body_in_single_buf = 1;
r->request_body_in_persistent_file = 1;
r->request_body_in_clean_file = 1;
rc = ngx_http_read_client_request_body(r,
ngx_http_lua_content_phase_post_read);
if (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE) {
#if (nginx_version < 1002006) || \
(nginx_version >= 1003000 && nginx_version < 1003009)
r->main->count--;
#endif
return rc;
}
if (rc == NGX_AGAIN) {
ctx->waiting_more_body = 1;
return NGX_DONE;
}
}
dd("setting entered");
ctx->entered_content_phase = 1;
dd("calling content handler");
return llcf->content_handler(r);
}
static void
ngx_http_lua_timer_handler(ngx_event_t *ev)
{
int n;
lua_State *L;
ngx_int_t rc;
ngx_connection_t *c = NULL;
ngx_http_request_t *r = NULL;
ngx_http_lua_ctx_t *ctx;
ngx_http_cleanup_t *cln;
ngx_pool_cleanup_t *pcln;
ngx_http_lua_timer_ctx_t tctx;
ngx_http_lua_main_conf_t *lmcf;
ngx_http_core_loc_conf_t *clcf;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
"lua ngx.timer expired");
ngx_memcpy(&tctx, ev->data, sizeof(ngx_http_lua_timer_ctx_t));
ngx_free(ev);
ev = NULL;
lmcf = tctx.lmcf;
lmcf->pending_timers--;
if (lmcf->running_timers >= lmcf->max_running_timers) {
ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0,
"%i lua_max_running_timers are not enough",
lmcf->max_running_timers);
goto failed;
}
c = ngx_http_lua_create_fake_connection(tctx.pool);
if (c == NULL) {
goto failed;
}
c->log->handler = ngx_http_lua_log_timer_error;
c->log->data = c;
c->listening = tctx.listening;
c->addr_text = tctx.client_addr_text;
r = ngx_http_lua_create_fake_request(c);
if (r == NULL) {
goto failed;
}
r->main_conf = tctx.main_conf;
r->srv_conf = tctx.srv_conf;
r->loc_conf = tctx.loc_conf;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
#if defined(nginx_version) && nginx_version >= 1003014
ngx_http_set_connection_log(r->connection, clcf->error_log);
#else
c->log->file = clcf->error_log->file;
if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
c->log->log_level = clcf->error_log->log_level;
}
#endif
dd("lmcf: %p", lmcf);
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
goto failed;
}
if (tctx.vm_state) {
ctx->vm_state = tctx.vm_state;
pcln = ngx_pool_cleanup_add(r->pool, 0);
if (pcln == NULL) {
goto failed;
}
pcln->handler = ngx_http_lua_cleanup_vm;
pcln->data = tctx.vm_state;
}
ctx->cur_co_ctx = &ctx->entry_co_ctx;
L = ngx_http_lua_get_lua_vm(r, ctx);
cln = ngx_http_cleanup_add(r, 0);
if (cln == NULL) {
goto failed;
}
cln->handler = ngx_http_lua_request_cleanup_handler;
cln->data = ctx;
ctx->cleanup = &cln->handler;
ctx->entered_content_phase = 1;
ctx->context = NGX_HTTP_LUA_CONTEXT_TIMER;
r->read_event_handler = ngx_http_block_reading;
ctx->cur_co_ctx->co_ref = tctx.co_ref;
ctx->cur_co_ctx->co = tctx.co;
ctx->cur_co_ctx->co_status = NGX_HTTP_LUA_CO_RUNNING;
dd("r connection: %p, log %p", r->connection, r->connection->log);
/* save the request in coroutine globals table */
ngx_http_lua_set_req(tctx.co, r);
lmcf->running_timers++;
lua_pushboolean(tctx.co, tctx.premature);
n = lua_gettop(tctx.co);
if (n > 2) {
lua_insert(tctx.co, 2);
}
#ifdef NGX_LUA_USE_ASSERT
ctx->cur_co_ctx->co_top = 1;
#endif
rc = ngx_http_lua_run_thread(L, r, ctx, n - 1);
dd("timer lua run thread: %d", (int) rc);
if (rc == NGX_ERROR || rc >= NGX_OK) {
/* do nothing */
} else if (rc == NGX_AGAIN) {
rc = ngx_http_lua_content_run_posted_threads(L, r, ctx, 0);
} else if (rc == NGX_DONE) {
rc = ngx_http_lua_content_run_posted_threads(L, r, ctx, 1);
} else {
rc = NGX_OK;
}
ngx_http_lua_finalize_request(r, rc);
return;
failed:
if (tctx.co_ref && tctx.co) {
lua_pushlightuserdata(tctx.co, &ngx_http_lua_coroutines_key);
lua_rawget(tctx.co, LUA_REGISTRYINDEX);
luaL_unref(tctx.co, -1, tctx.co_ref);
lua_settop(tctx.co, 0);
}
if (tctx.vm_state) {
ngx_http_lua_cleanup_vm(tctx.vm_state);
}
if (c) {
ngx_http_lua_close_fake_connection(c);
} else if (tctx.pool) {
ngx_destroy_pool(tctx.pool);
}
}
ngx_int_t
ngx_http_lua_rewrite_handler(ngx_http_request_t *r)
{
ngx_http_lua_loc_conf_t *llcf;
ngx_http_lua_ctx_t *ctx;
ngx_int_t rc;
ngx_http_lua_main_conf_t *lmcf;
/* XXX we need to take into account ngx_rewrite's location dump */
if (r->uri_changed) {
return NGX_DECLINED;
}
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua rewrite handler, uri \"%V\"", &r->uri);
lmcf = ngx_http_get_module_main_conf(r, ngx_http_lua_module);
if (!lmcf->postponed_to_rewrite_phase_end) {
ngx_http_core_main_conf_t *cmcf;
ngx_http_phase_handler_t tmp;
ngx_http_phase_handler_t *ph;
ngx_http_phase_handler_t *cur_ph;
ngx_http_phase_handler_t *last_ph;
lmcf->postponed_to_rewrite_phase_end = 1;
cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
ph = cmcf->phase_engine.handlers;
cur_ph = &ph[r->phase_handler];
last_ph = &ph[cur_ph->next - 1];
#if 0
if (cur_ph == last_ph) {
dd("XXX our handler is already the last rewrite phase handler");
}
#endif
if (cur_ph < last_ph) {
dd("swaping the contents of cur_ph and last_ph...");
tmp = *cur_ph;
memmove(cur_ph, cur_ph + 1,
(last_ph - cur_ph) * sizeof (ngx_http_phase_handler_t));
*last_ph = tmp;
r->phase_handler--; /* redo the current ph */
return NGX_DECLINED;
}
}
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->rewrite_handler == NULL) {
dd("no rewrite handler found");
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
dd("ctx = %p", ctx);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
}
dd("entered? %d", (int) ctx->entered_rewrite_phase);
if (ctx->entered_rewrite_phase) {
dd("rewriteby: calling wev handler");
rc = ctx->resume_handler(r);
dd("rewriteby: wev handler returns %d", (int) rc);
if (rc == NGX_OK) {
return NGX_DECLINED;
}
return rc;
}
if (ctx->waiting_more_body) {
return NGX_DONE;
}
if (llcf->force_read_body && !ctx->read_body_done) {
r->request_body_in_single_buf = 1;
r->request_body_in_persistent_file = 1;
r->request_body_in_clean_file = 1;
rc = ngx_http_read_client_request_body(r,
ngx_http_lua_generic_phase_post_read);
if (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE) {
#if (nginx_version < 1002006) || \
(nginx_version >= 1003000 && nginx_version < 1003009)
r->main->count--;
#endif
return rc;
}
if (rc == NGX_AGAIN) {
ctx->waiting_more_body = 1;
return NGX_DONE;
}
}
dd("calling rewrite handler");
return llcf->rewrite_handler(r);
}
static ngx_int_t
ngx_http_lua_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
{
ngx_http_lua_loc_conf_t *llcf;
ngx_http_lua_ctx_t *ctx;
ngx_int_t rc;
uint8_t old_context;
ngx_http_cleanup_t *cln;
ngx_http_lua_main_conf_t *lmcf;
lua_State *L;
ngx_chain_t *out;
ngx_buf_tag_t tag;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua body filter for user lua code, uri \"%V\"", &r->uri);
if (in == NULL) {
return ngx_http_next_body_filter(r, in);
}
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->body_filter_handler == NULL) {
dd("no body filter handler found");
return ngx_http_next_body_filter(r, in);
}
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
dd("ctx = %p", ctx);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_ERROR;
}
}
if (ctx->cleanup == NULL) {
cln = ngx_http_cleanup_add(r, 0);
if (cln == NULL) {
return NGX_ERROR;
}
cln->handler = ngx_http_lua_request_cleanup;
cln->data = r;
ctx->cleanup = &cln->handler;
}
old_context = ctx->context;
ctx->context = NGX_HTTP_LUA_CONTEXT_BODY_FILTER;
dd("calling body filter handler");
rc = llcf->body_filter_handler(r, in);
dd("calling body filter handler returned %d", (int) rc);
ctx->context = old_context;
if (rc != NGX_OK) {
return NGX_ERROR;
}
lmcf = ngx_http_get_module_main_conf(r, ngx_http_lua_module);
L = lmcf->lua;
lua_pushlightuserdata(L, &ngx_http_lua_body_filter_chain_key);
lua_rawget(L, LUA_GLOBALSINDEX);
out = lua_touserdata(L, -1);
lua_pop(L, 1);
if (in == out) {
return ngx_http_next_body_filter(r, in);
}
/* in != out */
rc = ngx_http_next_body_filter(r, out);
if (rc == NGX_ERROR) {
return NGX_ERROR;
}
tag = (ngx_buf_tag_t) &ngx_http_lua_module;
#if nginx_version >= 1001004
ngx_chain_update_chains(r->pool,
#else
ngx_chain_update_chains(
#endif
&ctx->free_bufs, &ctx->busy_bufs, &out, tag);
return rc;
}
static ngx_int_t
ngx_http_lua_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
{
ngx_http_lua_loc_conf_t *llcf;
ngx_http_lua_ctx_t *ctx;
ngx_int_t rc;
uint16_t old_context;
ngx_http_cleanup_t *cln;
lua_State *L;
ngx_chain_t *out;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua body filter for user lua code, uri \"%V\"", &r->uri);
if (in == NULL) {
return ngx_http_next_body_filter(r, in);
}
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
if (llcf->body_filter_handler == NULL) {
dd("no body filter handler found");
return ngx_http_next_body_filter(r, in);
}
ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module);
dd("ctx = %p", ctx);
if (ctx == NULL) {
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
return NGX_ERROR;
}
}
if (ctx->seen_last_in_filter) {
for (/* void */; in; in = in->next) {
dd("mark the buf as consumed: %d", (int) ngx_buf_size(in->buf));
in->buf->pos = in->buf->last;
in->buf->file_pos = in->buf->file_last;
}
return NGX_OK;
}
if (ctx->cleanup == NULL) {
cln = ngx_http_cleanup_add(r, 0);
if (cln == NULL) {
return NGX_ERROR;
}
cln->handler = ngx_http_lua_request_cleanup_handler;
cln->data = ctx;
ctx->cleanup = &cln->handler;
}
old_context = ctx->context;
ctx->context = NGX_HTTP_LUA_CONTEXT_BODY_FILTER;
dd("calling body filter handler");
rc = llcf->body_filter_handler(r, in);
dd("calling body filter handler returned %d", (int) rc);
ctx->context = old_context;
if (rc != NGX_OK) {
return NGX_ERROR;
}
L = ngx_http_lua_get_lua_vm(r, ctx);
lua_getglobal(L, ngx_http_lua_chain_key);
out = lua_touserdata(L, -1);
lua_pop(L, 1);
if (in == out) {
return ngx_http_next_body_filter(r, in);
}
if (out == NULL) {
/* do not forward NULL to the next filters because the input is
* not NULL */
return NGX_OK;
}
/* in != out */
rc = ngx_http_next_body_filter(r, out);
if (rc == NGX_ERROR) {
return NGX_ERROR;
}
#if nginx_version >= 1001004
ngx_chain_update_chains(r->pool,
#else
ngx_chain_update_chains(
#endif
&ctx->free_bufs, &ctx->busy_bufs, &out,
(ngx_buf_tag_t) &ngx_http_lua_module);
return rc;
}
ngx_int_t
ngx_http_lua_init_worker(ngx_cycle_t *cycle)
{
char *rv;
void *cur, *prev;
ngx_uint_t i;
ngx_conf_t conf;
ngx_connection_t *c = NULL;
ngx_http_module_t *module;
ngx_http_request_t *r = NULL;
ngx_http_lua_ctx_t *ctx;
ngx_http_conf_ctx_t *conf_ctx, http_ctx;
ngx_http_lua_loc_conf_t *llcf;
ngx_http_lua_main_conf_t *lmcf;
ngx_http_core_loc_conf_t *clcf;
lmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_lua_module);
if (lmcf == NULL
|| lmcf->init_worker_handler == NULL
|| lmcf->lua == NULL)
{
return NGX_OK;
}
conf_ctx = ((ngx_http_conf_ctx_t *) cycle->conf_ctx[ngx_http_module.index]);
http_ctx.main_conf = conf_ctx->main_conf;
ngx_memzero(&conf, sizeof(ngx_conf_t));
conf.temp_pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, cycle->log);
if (conf.temp_pool == NULL) {
return NGX_ERROR;
}
conf.ctx = &http_ctx;
conf.cycle = cycle;
conf.pool = cycle->pool;
conf.log = cycle->log;
http_ctx.loc_conf = ngx_pcalloc(conf.pool,
sizeof(void *) * ngx_http_max_module);
if (http_ctx.loc_conf == NULL) {
return NGX_ERROR;
}
http_ctx.srv_conf = ngx_pcalloc(conf.pool,
sizeof(void *) * ngx_http_max_module);
if (http_ctx.srv_conf == NULL) {
return NGX_ERROR;
}
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_HTTP_MODULE) {
continue;
}
module = ngx_modules[i]->ctx;
if (module->create_srv_conf) {
cur = module->create_srv_conf(&conf);
if (cur == NULL) {
return NGX_ERROR;
}
if (module->merge_srv_conf) {
prev = module->create_srv_conf(&conf);
if (prev == NULL) {
return NGX_ERROR;
}
rv = module->merge_srv_conf(&conf, prev, cur);
if (rv != NGX_CONF_OK) {
goto failed;
}
}
http_ctx.srv_conf[ngx_modules[i]->ctx_index] = cur;
}
if (module->create_loc_conf) {
cur = module->create_loc_conf(&conf);
if (cur == NULL) {
return NGX_ERROR;
}
if (module->merge_loc_conf) {
prev = module->create_loc_conf(&conf);
if (prev == NULL) {
return NGX_ERROR;
}
rv = module->merge_loc_conf(&conf, prev, cur);
if (rv != NGX_CONF_OK) {
goto failed;
}
}
http_ctx.loc_conf[ngx_modules[i]->ctx_index] = cur;
}
}
ngx_destroy_pool(conf.temp_pool);
conf.temp_pool = NULL;
c = ngx_http_lua_create_fake_connection();
if (c == NULL) {
goto failed;
}
c->log->handler = ngx_http_lua_log_init_worker_error;
r = ngx_http_lua_create_fake_request(c);
if (r == NULL) {
goto failed;
}
r->main_conf = http_ctx.main_conf;
r->srv_conf = http_ctx.srv_conf;
r->loc_conf = http_ctx.loc_conf;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
c->log->file = clcf->error_log->file;
if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
c->log->log_level = clcf->error_log->log_level;
}
ctx = ngx_http_lua_create_ctx(r);
if (ctx == NULL) {
goto failed;
}
ctx->context = NGX_HTTP_LUA_CONTEXT_INIT_WORKER;
ctx->cur_co_ctx = NULL;
r->read_event_handler = ngx_http_block_reading;
llcf = ngx_http_get_module_loc_conf(r, ngx_http_lua_module);
llcf->log_socket_errors = 0;
ngx_http_lua_set_req(lmcf->lua, r);
(void) lmcf->init_worker_handler(cycle->log, lmcf, lmcf->lua);
ngx_destroy_pool(r->pool);
ngx_destroy_pool(c->pool);
return NGX_OK;
failed:
if (conf.temp_pool) {
ngx_destroy_pool(conf.temp_pool);
}
if (r && r->pool) {
ngx_destroy_pool(r->pool);
}
if (c) {
ngx_http_lua_close_fake_connection(c);
}
return NGX_ERROR;
}
