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Diffstat (limited to 'app/nginx/src/stream/ngx_stream_ssl_preread_module.c')
-rw-r--r--app/nginx/src/stream/ngx_stream_ssl_preread_module.c449
1 files changed, 0 insertions, 449 deletions
diff --git a/app/nginx/src/stream/ngx_stream_ssl_preread_module.c b/app/nginx/src/stream/ngx_stream_ssl_preread_module.c
deleted file mode 100644
index 2040b4f..0000000
--- a/app/nginx/src/stream/ngx_stream_ssl_preread_module.c
+++ /dev/null
@@ -1,449 +0,0 @@
-
-/*
- * Copyright (C) Nginx, Inc.
- */
-
-
-#include <ngx_config.h>
-#include <ngx_core.h>
-#include <ngx_stream.h>
-
-
-typedef struct {
- ngx_flag_t enabled;
-} ngx_stream_ssl_preread_srv_conf_t;
-
-
-typedef struct {
- size_t left;
- size_t size;
- u_char *pos;
- u_char *dst;
- u_char buf[4];
- ngx_str_t host;
- ngx_log_t *log;
- ngx_pool_t *pool;
- ngx_uint_t state;
-} ngx_stream_ssl_preread_ctx_t;
-
-
-static ngx_int_t ngx_stream_ssl_preread_handler(ngx_stream_session_t *s);
-static ngx_int_t ngx_stream_ssl_preread_parse_record(
- ngx_stream_ssl_preread_ctx_t *ctx, u_char *pos, u_char *last);
-static ngx_int_t ngx_stream_ssl_preread_server_name_variable(
- ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data);
-static ngx_int_t ngx_stream_ssl_preread_add_variables(ngx_conf_t *cf);
-static void *ngx_stream_ssl_preread_create_srv_conf(ngx_conf_t *cf);
-static char *ngx_stream_ssl_preread_merge_srv_conf(ngx_conf_t *cf, void *parent,
- void *child);
-static ngx_int_t ngx_stream_ssl_preread_init(ngx_conf_t *cf);
-
-
-static ngx_command_t ngx_stream_ssl_preread_commands[] = {
-
- { ngx_string("ssl_preread"),
- NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG,
- ngx_conf_set_flag_slot,
- NGX_STREAM_SRV_CONF_OFFSET,
- offsetof(ngx_stream_ssl_preread_srv_conf_t, enabled),
- NULL },
-
- ngx_null_command
-};
-
-
-static ngx_stream_module_t ngx_stream_ssl_preread_module_ctx = {
- ngx_stream_ssl_preread_add_variables, /* preconfiguration */
- ngx_stream_ssl_preread_init, /* postconfiguration */
-
- NULL, /* create main configuration */
- NULL, /* init main configuration */
-
- ngx_stream_ssl_preread_create_srv_conf, /* create server configuration */
- ngx_stream_ssl_preread_merge_srv_conf /* merge server configuration */
-};
-
-
-ngx_module_t ngx_stream_ssl_preread_module = {
- NGX_MODULE_V1,
- &ngx_stream_ssl_preread_module_ctx, /* module context */
- ngx_stream_ssl_preread_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 ngx_stream_variable_t ngx_stream_ssl_preread_vars[] = {
-
- { ngx_string("ssl_preread_server_name"), NULL,
- ngx_stream_ssl_preread_server_name_variable, 0, 0, 0 },
-
- { ngx_null_string, NULL, NULL, 0, 0, 0 }
-};
-
-
-static ngx_int_t
-ngx_stream_ssl_preread_handler(ngx_stream_session_t *s)
-{
- u_char *last, *p;
- size_t len;
- ngx_int_t rc;
- ngx_connection_t *c;
- ngx_stream_ssl_preread_ctx_t *ctx;
- ngx_stream_ssl_preread_srv_conf_t *sscf;
-
- c = s->connection;
-
- ngx_log_debug0(NGX_LOG_DEBUG_STREAM, c->log, 0, "ssl preread handler");
-
- sscf = ngx_stream_get_module_srv_conf(s, ngx_stream_ssl_preread_module);
-
- if (!sscf->enabled) {
- return NGX_DECLINED;
- }
-
- if (c->type != SOCK_STREAM) {
- return NGX_DECLINED;
- }
-
- if (c->buffer == NULL) {
- return NGX_AGAIN;
- }
-
- ctx = ngx_stream_get_module_ctx(s, ngx_stream_ssl_preread_module);
- if (ctx == NULL) {
- ctx = ngx_pcalloc(c->pool, sizeof(ngx_stream_ssl_preread_ctx_t));
- if (ctx == NULL) {
- return NGX_ERROR;
- }
-
- ngx_stream_set_ctx(s, ctx, ngx_stream_ssl_preread_module);
-
- ctx->pool = c->pool;
- ctx->log = c->log;
- ctx->pos = c->buffer->pos;
- }
-
- p = ctx->pos;
- last = c->buffer->last;
-
- while (last - p >= 5) {
-
- if (p[0] != 0x16) {
- ngx_log_debug0(NGX_LOG_DEBUG_STREAM, ctx->log, 0,
- "ssl preread: not a handshake");
- return NGX_DECLINED;
- }
-
- if (p[1] != 3) {
- ngx_log_debug0(NGX_LOG_DEBUG_STREAM, ctx->log, 0,
- "ssl preread: unsupported SSL version");
- return NGX_DECLINED;
- }
-
- len = (p[3] << 8) + p[4];
-
- /* read the whole record before parsing */
- if ((size_t) (last - p) < len + 5) {
- break;
- }
-
- p += 5;
-
- rc = ngx_stream_ssl_preread_parse_record(ctx, p, p + len);
- if (rc != NGX_AGAIN) {
- return rc;
- }
-
- p += len;
- }
-
- ctx->pos = p;
-
- return NGX_AGAIN;
-}
-
-
-static ngx_int_t
-ngx_stream_ssl_preread_parse_record(ngx_stream_ssl_preread_ctx_t *ctx,
- u_char *pos, u_char *last)
-{
- size_t left, n, size;
- u_char *dst, *p;
-
- enum {
- sw_start = 0,
- sw_header, /* handshake msg_type, length */
- sw_head_tail, /* version, random */
- sw_sid_len, /* session_id length */
- sw_sid, /* session_id */
- sw_cs_len, /* cipher_suites length */
- sw_cs, /* cipher_suites */
- sw_cm_len, /* compression_methods length */
- sw_cm, /* compression_methods */
- sw_ext, /* extension */
- sw_ext_header, /* extension_type, extension_data length */
- sw_sni_len, /* SNI length */
- sw_sni_host_head, /* SNI name_type, host_name length */
- sw_sni_host /* SNI host_name */
- } state;
-
- ngx_log_debug2(NGX_LOG_DEBUG_STREAM, ctx->log, 0,
- "ssl preread: state %ui left %z", ctx->state, ctx->left);
-
- state = ctx->state;
- size = ctx->size;
- left = ctx->left;
- dst = ctx->dst;
- p = ctx->buf;
-
- for ( ;; ) {
- n = ngx_min((size_t) (last - pos), size);
-
- if (dst) {
- dst = ngx_cpymem(dst, pos, n);
- }
-
- pos += n;
- size -= n;
- left -= n;
-
- if (size != 0) {
- break;
- }
-
- switch (state) {
-
- case sw_start:
- state = sw_header;
- dst = p;
- size = 4;
- left = size;
- break;
-
- case sw_header:
- if (p[0] != 1) {
- ngx_log_debug0(NGX_LOG_DEBUG_STREAM, ctx->log, 0,
- "ssl preread: not a client hello");
- return NGX_DECLINED;
- }
-
- state = sw_head_tail;
- dst = NULL;
- size = 34;
- left = (p[1] << 16) + (p[2] << 8) + p[3];
- break;
-
- case sw_head_tail:
- state = sw_sid_len;
- dst = p;
- size = 1;
- break;
-
- case sw_sid_len:
- state = sw_sid;
- dst = NULL;
- size = p[0];
- break;
-
- case sw_sid:
- state = sw_cs_len;
- dst = p;
- size = 2;
- break;
-
- case sw_cs_len:
- state = sw_cs;
- dst = NULL;
- size = (p[0] << 8) + p[1];
- break;
-
- case sw_cs:
- state = sw_cm_len;
- dst = p;
- size = 1;
- break;
-
- case sw_cm_len:
- state = sw_cm;
- dst = NULL;
- size = p[0];
- break;
-
- case sw_cm:
- if (left == 0) {
- /* no extensions */
- return NGX_OK;
- }
-
- state = sw_ext;
- dst = p;
- size = 2;
- break;
-
- case sw_ext:
- if (left == 0) {
- return NGX_OK;
- }
-
- state = sw_ext_header;
- dst = p;
- size = 4;
- break;
-
- case sw_ext_header:
- if (p[0] == 0 && p[1] == 0) {
- /* SNI extension */
- state = sw_sni_len;
- dst = NULL;
- size = 2;
- break;
- }
-
- state = sw_ext;
- dst = NULL;
- size = (p[2] << 8) + p[3];
- break;
-
- case sw_sni_len:
- state = sw_sni_host_head;
- dst = p;
- size = 3;
- break;
-
- case sw_sni_host_head:
- if (p[0] != 0) {
- ngx_log_debug0(NGX_LOG_DEBUG_STREAM, ctx->log, 0,
- "ssl preread: SNI hostname type is not DNS");
- return NGX_DECLINED;
- }
-
- state = sw_sni_host;
- size = (p[1] << 8) + p[2];
-
- ctx->host.data = ngx_pnalloc(ctx->pool, size);
- if (ctx->host.data == NULL) {
- return NGX_ERROR;
- }
-
- dst = ctx->host.data;
- break;
-
- case sw_sni_host:
- ctx->host.len = (p[1] << 8) + p[2];
-
- ngx_log_debug1(NGX_LOG_DEBUG_STREAM, ctx->log, 0,
- "ssl preread: SNI hostname \"%V\"", &ctx->host);
- return NGX_OK;
- }
-
- if (left < size) {
- ngx_log_debug0(NGX_LOG_DEBUG_STREAM, ctx->log, 0,
- "ssl preread: failed to parse handshake");
- return NGX_DECLINED;
- }
- }
-
- ctx->state = state;
- ctx->size = size;
- ctx->left = left;
- ctx->dst = dst;
-
- return NGX_AGAIN;
-}
-
-
-static ngx_int_t
-ngx_stream_ssl_preread_server_name_variable(ngx_stream_session_t *s,
- ngx_variable_value_t *v, uintptr_t data)
-{
- ngx_stream_ssl_preread_ctx_t *ctx;
-
- ctx = ngx_stream_get_module_ctx(s, ngx_stream_ssl_preread_module);
-
- if (ctx == NULL) {
- v->not_found = 1;
- return NGX_OK;
- }
-
- v->valid = 1;
- v->no_cacheable = 0;
- v->not_found = 0;
- v->len = ctx->host.len;
- v->data = ctx->host.data;
-
- return NGX_OK;
-}
-
-
-static ngx_int_t
-ngx_stream_ssl_preread_add_variables(ngx_conf_t *cf)
-{
- ngx_stream_variable_t *var, *v;
-
- for (v = ngx_stream_ssl_preread_vars; v->name.len; v++) {
- var = ngx_stream_add_variable(cf, &v->name, v->flags);
- if (var == NULL) {
- return NGX_ERROR;
- }
-
- var->get_handler = v->get_handler;
- var->data = v->data;
- }
-
- return NGX_OK;
-}
-
-
-static void *
-ngx_stream_ssl_preread_create_srv_conf(ngx_conf_t *cf)
-{
- ngx_stream_ssl_preread_srv_conf_t *conf;
-
- conf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_ssl_preread_srv_conf_t));
- if (conf == NULL) {
- return NULL;
- }
-
- conf->enabled = NGX_CONF_UNSET;
-
- return conf;
-}
-
-
-static char *
-ngx_stream_ssl_preread_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
-{
- ngx_stream_ssl_preread_srv_conf_t *prev = parent;
- ngx_stream_ssl_preread_srv_conf_t *conf = child;
-
- ngx_conf_merge_value(conf->enabled, prev->enabled, 0);
-
- return NGX_CONF_OK;
-}
-
-
-static ngx_int_t
-ngx_stream_ssl_preread_init(ngx_conf_t *cf)
-{
- ngx_stream_handler_pt *h;
- ngx_stream_core_main_conf_t *cmcf;
-
- cmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_core_module);
-
- h = ngx_array_push(&cmcf->phases[NGX_STREAM_PREREAD_PHASE].handlers);
- if (h == NULL) {
- return NGX_ERROR;
- }
-
- *h = ngx_stream_ssl_preread_handler;
-
- return NGX_OK;
-}