Mercurial > hg > nginx
view src/stream/ngx_stream_return_module.c @ 7731:fd0b2226919b
Stream: proxy_ssl_conf_command directive.
Similarly to ssl_conf_command, proxy_ssl_conf_command can be used to
set arbitrary OpenSSL configuration parameters as long as nginx is
compiled with OpenSSL 1.0.2 or later, when connecting to upstream
servers with SSL. Full list of available configuration commands
can be found in the SSL_CONF_cmd manual page
(https://www.openssl.org/docs/man1.1.1/man3/SSL_CONF_cmd.html).
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 22 Oct 2020 18:00:27 +0300 |
parents | 56fc55e32f23 |
children |
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/* * Copyright (C) Roman Arutyunyan * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_stream.h> typedef struct { ngx_stream_complex_value_t text; } ngx_stream_return_srv_conf_t; typedef struct { ngx_chain_t *out; } ngx_stream_return_ctx_t; static void ngx_stream_return_handler(ngx_stream_session_t *s); static void ngx_stream_return_write_handler(ngx_event_t *ev); static void *ngx_stream_return_create_srv_conf(ngx_conf_t *cf); static char *ngx_stream_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_command_t ngx_stream_return_commands[] = { { ngx_string("return"), NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_stream_return, NGX_STREAM_SRV_CONF_OFFSET, 0, NULL }, ngx_null_command }; static ngx_stream_module_t ngx_stream_return_module_ctx = { NULL, /* preconfiguration */ NULL, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ ngx_stream_return_create_srv_conf, /* create server configuration */ NULL /* merge server configuration */ }; ngx_module_t ngx_stream_return_module = { NGX_MODULE_V1, &ngx_stream_return_module_ctx, /* module context */ ngx_stream_return_commands, /* module directives */ NGX_STREAM_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static void ngx_stream_return_handler(ngx_stream_session_t *s) { ngx_str_t text; ngx_buf_t *b; ngx_connection_t *c; ngx_stream_return_ctx_t *ctx; ngx_stream_return_srv_conf_t *rscf; c = s->connection; c->log->action = "returning text"; rscf = ngx_stream_get_module_srv_conf(s, ngx_stream_return_module); if (ngx_stream_complex_value(s, &rscf->text, &text) != NGX_OK) { ngx_stream_finalize_session(s, NGX_STREAM_INTERNAL_SERVER_ERROR); return; } ngx_log_debug1(NGX_LOG_DEBUG_STREAM, c->log, 0, "stream return text: \"%V\"", &text); if (text.len == 0) { ngx_stream_finalize_session(s, NGX_STREAM_OK); return; } ctx = ngx_pcalloc(c->pool, sizeof(ngx_stream_return_ctx_t)); if (ctx == NULL) { ngx_stream_finalize_session(s, NGX_STREAM_INTERNAL_SERVER_ERROR); return; } ngx_stream_set_ctx(s, ctx, ngx_stream_return_module); b = ngx_calloc_buf(c->pool); if (b == NULL) { ngx_stream_finalize_session(s, NGX_STREAM_INTERNAL_SERVER_ERROR); return; } b->memory = 1; b->pos = text.data; b->last = text.data + text.len; b->last_buf = 1; ctx->out = ngx_alloc_chain_link(c->pool); if (ctx->out == NULL) { ngx_stream_finalize_session(s, NGX_STREAM_INTERNAL_SERVER_ERROR); return; } ctx->out->buf = b; ctx->out->next = NULL; c->write->handler = ngx_stream_return_write_handler; ngx_stream_return_write_handler(c->write); } static void ngx_stream_return_write_handler(ngx_event_t *ev) { ngx_connection_t *c; ngx_stream_session_t *s; ngx_stream_return_ctx_t *ctx; c = ev->data; s = c->data; if (ev->timedout) { ngx_connection_error(c, NGX_ETIMEDOUT, "connection timed out"); ngx_stream_finalize_session(s, NGX_STREAM_OK); return; } ctx = ngx_stream_get_module_ctx(s, ngx_stream_return_module); if (ngx_stream_top_filter(s, ctx->out, 1) == NGX_ERROR) { ngx_stream_finalize_session(s, NGX_STREAM_INTERNAL_SERVER_ERROR); return; } ctx->out = NULL; if (!c->buffered) { ngx_log_debug0(NGX_LOG_DEBUG_STREAM, c->log, 0, "stream return done sending"); ngx_stream_finalize_session(s, NGX_STREAM_OK); return; } if (ngx_handle_write_event(ev, 0) != NGX_OK) { ngx_stream_finalize_session(s, NGX_STREAM_INTERNAL_SERVER_ERROR); return; } ngx_add_timer(ev, 5000); } static void * ngx_stream_return_create_srv_conf(ngx_conf_t *cf) { ngx_stream_return_srv_conf_t *conf; conf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_return_srv_conf_t)); if (conf == NULL) { return NULL; } return conf; } static char * ngx_stream_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_stream_return_srv_conf_t *rscf = conf; ngx_str_t *value; ngx_stream_core_srv_conf_t *cscf; ngx_stream_compile_complex_value_t ccv; if (rscf->text.value.data) { return "is duplicate"; } value = cf->args->elts; ngx_memzero(&ccv, sizeof(ngx_stream_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[1]; ccv.complex_value = &rscf->text; if (ngx_stream_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } cscf = ngx_stream_conf_get_module_srv_conf(cf, ngx_stream_core_module); cscf->handler = ngx_stream_return_handler; return NGX_CONF_OK; }