static char *ngx_http_merge_locations(ngx_conf_t *cf,
ngx_array_t *locations,
void **loc_conf,
ngx_http_module_t *module,
ngx_uint_t ctx_index)
{
char *rv;
ngx_uint_t i;
ngx_http_core_loc_conf_t **clcfp;
clcfp = /* (ngx_http_core_loc_conf_t **) */ locations->elts;
for (i = 0; i < locations->nelts; i++) {
rv = module->merge_loc_conf(cf, loc_conf[ctx_index],
clcfp[i]->loc_conf[ctx_index]);
if (rv != NGX_CONF_OK) {
return rv;
}
rv = ngx_http_merge_locations(cf, &clcfp[i]->locations,
clcfp[i]->loc_conf, module, ctx_index);
if (rv != NGX_CONF_OK) {
return rv;
}
}
return NGX_CONF_OK;
}
static char *
ngx_http_merge_locations(ngx_conf_t *cf, ngx_queue_t *locations,
void **loc_conf, ngx_http_module_t *module, ngx_uint_t ctx_index)
{
char *rv;
ngx_queue_t *q;
ngx_http_core_loc_conf_t *clcf;
ngx_http_location_queue_t *lq;
if (locations == NULL) {
return NGX_CONF_OK;
}
for (q = ngx_queue_head(locations);
q != ngx_queue_sentinel(locations);
q = ngx_queue_next(q))
{
lq = (ngx_http_location_queue_t *) q;
clcf = lq->exact ? lq->exact : lq->inclusive;
rv = module->merge_loc_conf(cf, loc_conf[ctx_index],
clcf->loc_conf[ctx_index]);
if (rv != NGX_CONF_OK) {
return rv;
}
rv = ngx_http_merge_locations(cf, clcf->locations, clcf->loc_conf,
module, ctx_index);
if (rv != NGX_CONF_OK) {
return rv;
}
}
return NGX_CONF_OK;
}
static char *
ngx_http_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
char *rv;
ngx_uint_t mi, m, s;
ngx_conf_t pcf;
ngx_http_module_t *module;
ngx_http_conf_ctx_t *ctx;
ngx_http_core_loc_conf_t *clcf;
ngx_http_core_srv_conf_t **cscfp;
ngx_http_core_main_conf_t *cmcf;
/* the main http context */
ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
if (ctx == NULL) {
return NGX_CONF_ERROR;
}
*(ngx_http_conf_ctx_t **) conf = ctx;
/* count the number of the http modules and set up their indices */
ngx_http_max_module = 0;
for (m = 0; ngx_modules[m]; m++) {
if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
continue;
}
ngx_modules[m]->ctx_index = ngx_http_max_module++;
}
/* the http main_conf context, it is the same in the all http contexts */
ctx->main_conf = ngx_pcalloc(cf->pool,
sizeof(void *) * ngx_http_max_module);
if (ctx->main_conf == NULL) {
return NGX_CONF_ERROR;
}
/*
* the http null srv_conf context, it is used to merge
* the server{}s' srv_conf's
*/
ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
if (ctx->srv_conf == NULL) {
return NGX_CONF_ERROR;
}
/*
* the http null loc_conf context, it is used to merge
* the server{}s' loc_conf's
*/
ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
if (ctx->loc_conf == NULL) {
return NGX_CONF_ERROR;
}
/*
* create the main_conf's, the null srv_conf's, and the null loc_conf's
* of the all http modules
*/
for (m = 0; ngx_modules[m]; m++) {
if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
continue;
}
module = ngx_modules[m]->ctx;
mi = ngx_modules[m]->ctx_index;
if (module->create_main_conf) {
ctx->main_conf[mi] = module->create_main_conf(cf);
if (ctx->main_conf[mi] == NULL) {
return NGX_CONF_ERROR;
}
}
if (module->create_srv_conf) {
ctx->srv_conf[mi] = module->create_srv_conf(cf);
if (ctx->srv_conf[mi] == NULL) {
return NGX_CONF_ERROR;
}
}
if (module->create_loc_conf) {
ctx->loc_conf[mi] = module->create_loc_conf(cf);
if (ctx->loc_conf[mi] == NULL) {
return NGX_CONF_ERROR;
}
}
}
pcf = *cf;
cf->ctx = ctx;
for (m = 0; ngx_modules[m]; m++) {
if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
continue;
}
module = ngx_modules[m]->ctx;
if (module->preconfiguration) {
if (module->preconfiguration(cf) != NGX_OK) {
return NGX_CONF_ERROR;
}
}
}
/* parse inside the http{} block */
cf->module_type = NGX_HTTP_MODULE;
cf->cmd_type = NGX_HTTP_MAIN_CONF;
rv = ngx_conf_parse(cf, NULL);
if (rv != NGX_CONF_OK) {
goto failed;
}
/*
* init http{} main_conf's, merge the server{}s' srv_conf's
* and its location{}s' loc_conf's
*/
cmcf = ctx->main_conf[ngx_http_core_module.ctx_index];
cscfp = cmcf->servers.elts;
for (m = 0; ngx_modules[m]; m++) {
if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
continue;
}
module = ngx_modules[m]->ctx;
mi = ngx_modules[m]->ctx_index;
/* init http{} main_conf's */
if (module->init_main_conf) {
rv = module->init_main_conf(cf, ctx->main_conf[mi]);
if (rv != NGX_CONF_OK) {
goto failed;
}
}
for (s = 0; s < cmcf->servers.nelts; s++) {
/* merge the server{}s' srv_conf's */
if (module->merge_srv_conf) {
rv = module->merge_srv_conf(cf, ctx->srv_conf[mi],
cscfp[s]->ctx->srv_conf[mi]);
if (rv != NGX_CONF_OK) {
goto failed;
}
}
if (module->merge_loc_conf) {
/* merge the server{}'s loc_conf */
rv = module->merge_loc_conf(cf, ctx->loc_conf[mi],
cscfp[s]->ctx->loc_conf[mi]);
if (rv != NGX_CONF_OK) {
goto failed;
}
/* merge the locations{}' loc_conf's */
clcf = cscfp[s]->ctx->loc_conf[ngx_http_core_module.ctx_index];
rv = ngx_http_merge_locations(cf, clcf->locations,
cscfp[s]->ctx->loc_conf,
module, mi);
if (rv != NGX_CONF_OK) {
goto failed;
}
}
}
}
/* create location trees */
for (s = 0; s < cmcf->servers.nelts; s++) {
clcf = cscfp[s]->ctx->loc_conf[ngx_http_core_module.ctx_index];
if (ngx_http_init_locations(cf, cscfp[s], clcf) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (ngx_http_init_static_location_trees(cf, clcf) != NGX_OK) {
return NGX_CONF_ERROR;
}
}
if (ngx_http_init_phases(cf, cmcf) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (ngx_http_init_headers_in_hash(cf, cmcf) != NGX_OK) {
return NGX_CONF_ERROR;
}
for (m = 0; ngx_modules[m]; m++) {
if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
continue;
}
module = ngx_modules[m]->ctx;
if (module->postconfiguration) {
if (module->postconfiguration(cf) != NGX_OK) {
return NGX_CONF_ERROR;
}
}
}
if (ngx_http_variables_init_vars(cf) != NGX_OK) {
return NGX_CONF_ERROR;
}
/*
* http{}'s cf->ctx was needed while the configuration merging
* and in postconfiguration process
*/
*cf = pcf;
if (ngx_http_init_phase_handlers(cf, cmcf) != NGX_OK) {
return NGX_CONF_ERROR;
}
/* optimize the lists of ports, addresses and server names */
if (ngx_http_optimize_servers(cf, cmcf, cmcf->ports) != NGX_OK) {
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
failed:
*cf = pcf;
return rv;
}
static char *ngx_http_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
char *rv;
ngx_uint_t mi, m, s, l, p, a, n;
ngx_uint_t port_found, addr_found, virtual_names;
ngx_conf_t pcf;
ngx_array_t in_ports;
ngx_listening_t *ls;
ngx_http_listen_t *lscf;
ngx_http_module_t *module;
ngx_http_handler_pt *h;
ngx_http_conf_ctx_t *ctx;
ngx_http_in_port_t *in_port, *inport;
ngx_http_in_addr_t *in_addr, *inaddr;
ngx_http_server_name_t *s_name, *name;
ngx_http_core_srv_conf_t **cscfp, *cscf;
ngx_http_core_loc_conf_t *clcf;
ngx_http_core_main_conf_t *cmcf;
#if (WIN32)
ngx_iocp_conf_t *iocpcf;
#endif
/* the main http context */
ngx_test_null(ctx,
ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)),
NGX_CONF_ERROR);
*(ngx_http_conf_ctx_t **) conf = ctx; // 把新创建的配置上下文挂钩起来
/* count the number of the http modules and set up their indices */
ngx_http_max_module = 0;
for (m = 0; ngx_modules[m]; m++) {
if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
continue;
}
ngx_modules[m]->ctx_index = ngx_http_max_module++;
}
/* the main http main_conf, it's the same in the all http contexts */
ngx_test_null(ctx->main_conf,
ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module),
NGX_CONF_ERROR);
/* the http null srv_conf, it's used to merge the server{}s' srv_conf's */
ngx_test_null(ctx->srv_conf,
ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module),
NGX_CONF_ERROR);
/* the http null loc_conf, it's used to merge the server{}s' loc_conf's */
ngx_test_null(ctx->loc_conf,
ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module),
NGX_CONF_ERROR);
/* create the main_conf, srv_conf and loc_conf in all http modules */
for (m = 0; ngx_modules[m]; m++) {
if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
continue;
}
module = ngx_modules[m]->ctx;
mi = ngx_modules[m]->ctx_index;
if (module->pre_conf) {
if (module->pre_conf(cf) != NGX_OK) {
return NGX_CONF_ERROR;
}
}
if (module->create_main_conf) {
ngx_test_null(ctx->main_conf[mi], module->create_main_conf(cf),
NGX_CONF_ERROR);
}
if (module->create_srv_conf) {
ngx_test_null(ctx->srv_conf[mi], module->create_srv_conf(cf),
NGX_CONF_ERROR);
}
if (module->create_loc_conf) {
ngx_test_null(ctx->loc_conf[mi], module->create_loc_conf(cf),
NGX_CONF_ERROR);
}
}
/* parse inside the http{} block */
pcf = *cf;
cf->ctx = ctx;
cf->module_type = NGX_HTTP_MODULE;
cf->cmd_type = NGX_HTTP_MAIN_CONF;
rv = ngx_conf_parse(cf, NULL);
if (rv != NGX_CONF_OK) {
*cf = pcf;
return rv;
}
/*
* init http{} main_conf's, merge the server{}s' srv_conf's
* and its location{}s' loc_conf's
*/
cmcf = ctx->main_conf[ngx_http_core_module.ctx_index];
cscfp = cmcf->servers.elts;
for (m = 0; ngx_modules[m]; m++) {
if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
continue;
}
module = ngx_modules[m]->ctx;
mi = ngx_modules[m]->ctx_index;
/* init http{} main_conf's */
if (module->init_main_conf) {
rv = module->init_main_conf(cf, ctx->main_conf[mi]);
if (rv != NGX_CONF_OK) {
*cf = pcf;
return rv;
}
}
for (s = 0; s < cmcf->servers.nelts; s++) {
/* merge the server{}s' srv_conf's */
if (module->merge_srv_conf) {
rv = module->merge_srv_conf(cf,
ctx->srv_conf[mi],
cscfp[s]->ctx->srv_conf[mi]);
if (rv != NGX_CONF_OK) {
*cf = pcf;
return rv;
}
}
if (module->merge_loc_conf) {
/* merge the server{}'s loc_conf */
rv = module->merge_loc_conf(cf,
ctx->loc_conf[mi],
cscfp[s]->ctx->loc_conf[mi]);
if (rv != NGX_CONF_OK) {
*cf = pcf;
return rv;
}
/* merge the locations{}' loc_conf's */
rv = ngx_http_merge_locations(cf, &cscfp[s]->locations,
cscfp[s]->ctx->loc_conf,
module, mi);
if (rv != NGX_CONF_OK) {
*cf = pcf;
return rv;
}
#if 0
clcfp = (ngx_http_core_loc_conf_t **) cscfp[s]->locations.elts;
for (l = 0; l < cscfp[s]->locations.nelts; l++) {
rv = module->merge_loc_conf(cf,
cscfp[s]->ctx->loc_conf[mi],
clcfp[l]->loc_conf[mi]);
if (rv != NGX_CONF_OK) {
*cf = pcf;
return rv;
}
}
#endif
}
}
}
/* we needed "http"'s cf->ctx while merging configuration */
*cf = pcf;
/* init lists of the handlers */
ngx_init_array(cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers,
cf->cycle->pool, 10, sizeof(ngx_http_handler_pt),
NGX_CONF_ERROR);
cmcf->phases[NGX_HTTP_REWRITE_PHASE].type = NGX_OK;
/* the special find config phase for single handler */
ngx_init_array(cmcf->phases[NGX_HTTP_FIND_CONFIG_PHASE].handlers,
cf->cycle->pool, 1, sizeof(ngx_http_handler_pt),
NGX_CONF_ERROR);
cmcf->phases[NGX_HTTP_FIND_CONFIG_PHASE].type = NGX_OK;
ngx_test_null(h, ngx_push_array(
&cmcf->phases[NGX_HTTP_FIND_CONFIG_PHASE].handlers),
NGX_CONF_ERROR);
*h = ngx_http_find_location_config;
ngx_init_array(cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers,
cf->cycle->pool, 10, sizeof(ngx_http_handler_pt),
NGX_CONF_ERROR);
cmcf->phases[NGX_HTTP_ACCESS_PHASE].type = NGX_DECLINED;
ngx_init_array(cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers,
cf->cycle->pool, 10, sizeof(ngx_http_handler_pt),
NGX_CONF_ERROR);
cmcf->phases[NGX_HTTP_CONTENT_PHASE].type = NGX_OK;
/*
* create the lists of the ports, the addresses and the server names
* to allow quickly find the server core module configuration at run-time
*/
ngx_init_array(in_ports, cf->pool, 10, sizeof(ngx_http_in_port_t),
NGX_CONF_ERROR);
/* "server" directives */
cscfp = cmcf->servers.elts;
for (s = 0; s < cmcf->servers.nelts; s++) {
/* "listen" directives */
lscf = cscfp[s]->listen.elts;
for (l = 0; l < cscfp[s]->listen.nelts; l++) {
port_found = 0;
/* AF_INET only */
in_port = in_ports.elts;
for (p = 0; p < in_ports.nelts; p++) {
if (lscf[l].port == in_port[p].port) {
/* the port is already in the port list */
port_found = 1;
addr_found = 0;
in_addr = in_port[p].addrs.elts;
for (a = 0; a < in_port[p].addrs.nelts; a++) {
if (lscf[l].addr == in_addr[a].addr) {
/* the address is already bound to this port */
/* "server_name" directives */
s_name = cscfp[s]->server_names.elts;
for (n = 0; n < cscfp[s]->server_names.nelts; n++) {
/*
* add the server name and server core module
* configuration to the address:port
*/
/* TODO: duplicate names can be checked here */
ngx_test_null(name,
ngx_push_array(&in_addr[a].names),
NGX_CONF_ERROR);
name->name = s_name[n].name;
name->core_srv_conf = s_name[n].core_srv_conf;
}
/*
* check duplicate "default" server that
* serves this address:port
*/
if (lscf[l].default_server) {
if (in_addr[a].default_server) {
ngx_log_error(NGX_LOG_ERR, cf->log, 0,
"duplicate default server in %s:%d",
lscf[l].file_name.data,
lscf[l].line);
return NGX_CONF_ERROR;
}
in_addr[a].core_srv_conf = cscfp[s];
in_addr[a].default_server = 1;
}
addr_found = 1;
break;
} else if (in_addr[a].addr == INADDR_ANY) {
/*
* "*:port" must be the last resort so move it
* to the end of the address list and add
* the new address at its place
*/
ngx_test_null(inaddr,
ngx_push_array(&in_port[p].addrs),
NGX_CONF_ERROR);
ngx_memcpy(inaddr, &in_addr[a],
sizeof(ngx_http_in_addr_t));
in_addr[a].addr = lscf[l].addr;
in_addr[a].default_server = lscf[l].default_server;
in_addr[a].core_srv_conf = cscfp[s];
/*
* create the empty list of the server names that
* can be served on this address:port
*/
ngx_init_array(inaddr->names, cf->pool, 10,
sizeof(ngx_http_server_name_t),
NGX_CONF_ERROR);
addr_found = 1;
break;
}
}
if (!addr_found) {
/*
* add the address to the addresses list that
* bound to this port
*/
ngx_test_null(inaddr,
ngx_push_array(&in_port[p].addrs),
NGX_CONF_ERROR);
inaddr->addr = lscf[l].addr;
inaddr->default_server = lscf[l].default_server;
inaddr->core_srv_conf = cscfp[s];
/*
* create the empty list of the server names that
* can be served on this address:port
*/
ngx_init_array(inaddr->names, cf->pool, 10,
sizeof(ngx_http_server_name_t),
NGX_CONF_ERROR);
}
}
}
if (!port_found) {
/* add the port to the in_port list */
ngx_test_null(in_port,
ngx_push_array(&in_ports),
NGX_CONF_ERROR);
in_port->port = lscf[l].port;
ngx_test_null(in_port->port_text.data, ngx_palloc(cf->pool, 7),
NGX_CONF_ERROR);
in_port->port_text.len = ngx_snprintf((char *)
in_port->port_text.data,
7, ":%d",
in_port->port);
/* create list of the addresses that bound to this port ... */
ngx_init_array(in_port->addrs, cf->pool, 10,
sizeof(ngx_http_in_addr_t),
NGX_CONF_ERROR);
ngx_test_null(inaddr, ngx_push_array(&in_port->addrs),
NGX_CONF_ERROR);
/* ... and add the address to this list */
inaddr->addr = lscf[l].addr;
inaddr->default_server = lscf[l].default_server;
inaddr->core_srv_conf = cscfp[s];
/*
* create the empty list of the server names that
* can be served on this address:port
*/
ngx_init_array(inaddr->names, cf->pool, 10,
sizeof(ngx_http_server_name_t),
NGX_CONF_ERROR);
}
}
}
/* optimize the lists of the ports, the addresses and the server names */
/* AF_INET only */
in_port = in_ports.elts;
for (p = 0; p < in_ports.nelts; p++) {
/* check whether the all server names point to the same server */
in_addr = in_port[p].addrs.elts;
for (a = 0; a < in_port[p].addrs.nelts; a++) {
virtual_names = 0;
name = in_addr[a].names.elts;
for (n = 0; n < in_addr[a].names.nelts; n++) {
if (in_addr[a].core_srv_conf != name[n].core_srv_conf) {
virtual_names = 1;
break;
}
}
/*
* if the all server names point to the same server
* then we do not need to check them at run-time
*/
if (!virtual_names) {
in_addr[a].names.nelts = 0;
}
}
/*
* if there's the binding to "*:port" then we need to bind()
* to "*:port" only and ignore the other bindings
*/
if (in_addr[a - 1].addr == INADDR_ANY) {
a--;
} else {
a = 0;
}
in_addr = in_port[p].addrs.elts;
while (a < in_port[p].addrs.nelts) {
ls = ngx_listening_inet_stream_socket(cf, in_addr[a].addr,
in_port[p].port);
if (ls == NULL) {
return NGX_CONF_ERROR;
}
ls->backlog = -1;
#if 0
#if 0
ls->nonblocking = 1;
#else
ls->nonblocking = 0;
#endif
#endif
ls->addr_ntop = 1;
ls->handler = ngx_http_init_connection;
cscf = in_addr[a].core_srv_conf;
ls->pool_size = cscf->connection_pool_size;
ls->post_accept_timeout = cscf->post_accept_timeout;
clcf = cscf->ctx->loc_conf[ngx_http_core_module.ctx_index];
ls->log = clcf->err_log;
#if (WIN32)
iocpcf = ngx_event_get_conf(cf->cycle->conf_ctx, ngx_iocp_module);
if (iocpcf->acceptex_read) {
ls->post_accept_buffer_size = cscf->client_header_buffer_size;
}
#endif
ls->ctx = ctx;
if (in_port[p].addrs.nelts > 1) {
in_addr = in_port[p].addrs.elts;
if (in_addr[in_port[p].addrs.nelts - 1].addr != INADDR_ANY) {
/*
* if this port has not the "*:port" binding then create
* the separate ngx_http_in_port_t for the all bindings
*/
ngx_test_null(inport,
ngx_palloc(cf->pool,
sizeof(ngx_http_in_port_t)),
NGX_CONF_ERROR);
inport->port = in_port[p].port;
inport->port_text = in_port[p].port_text;
/* init list of the addresses ... */
ngx_init_array(inport->addrs, cf->pool, 1,
sizeof(ngx_http_in_addr_t),
NGX_CONF_ERROR);
/* ... and set up it with the first address */
inport->addrs.nelts = 1;
inport->addrs.elts = in_port[p].addrs.elts;
ls->servers = inport;
/* prepare for the next cycle */
in_port[p].addrs.elts = (char *) in_port[p].addrs.elts
+ in_port[p].addrs.size;
in_port[p].addrs.nelts--;
in_addr = (ngx_http_in_addr_t *) in_port[p].addrs.elts;
a = 0;
continue;
}
}
ls->servers = &in_port[p];
a++;
}
}
#if (NGX_DEBUG)
in_port = in_ports.elts;
for (p = 0; p < in_ports.nelts; p++) {
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
"port: %d %08x", in_port[p].port, &in_port[p]);
in_addr = in_port[p].addrs.elts;
for (a = 0; a < in_port[p].addrs.nelts; a++) {
u_char ip[20];
ngx_inet_ntop(AF_INET, &in_addr[a].addr, ip, 20);
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
"%s %08x", ip, in_addr[a].core_srv_conf);
s_name = in_addr[a].names.elts;
for (n = 0; n < in_addr[a].names.nelts; n++) {
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
"%s %08x", s_name[n].name.data,
s_name[n].core_srv_conf);
}
}
}
#endif
return NGX_CONF_OK;
}
