Merged with the quic branch.

1 files changed, 389 insertions, 0 deletions

diff --git a/src/http/v3/ngx_http_v3_module.c b/src/http/v3/ngx_http_v3_module.c
new file mode 100644
index 000000000..875e5f29b
--- /dev/null
+++ b/src/http/v3/ngx_http_v3_module.c
@@ -0,0 +1,389 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Roman Arutyunyan
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+
+static ngx_int_t ngx_http_v3_variable(ngx_http_request_t *r,
+    ngx_http_variable_value_t *v, uintptr_t data);
+static ngx_int_t ngx_http_v3_add_variables(ngx_conf_t *cf);
+static void *ngx_http_v3_create_srv_conf(ngx_conf_t *cf);
+static char *ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, void *parent,
+    void *child);
+static char *ngx_http_quic_host_key(ngx_conf_t *cf, ngx_command_t *cmd,
+    void *conf);
+
+
+static ngx_command_t  ngx_http_v3_commands[] = {
+
+    { ngx_string("http3"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_v3_srv_conf_t, enable),
+      NULL },
+
+    { ngx_string("http3_hq"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_v3_srv_conf_t, enable_hq),
+      NULL },
+
+    { ngx_string("http3_max_concurrent_streams"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_v3_srv_conf_t, max_concurrent_streams),
+      NULL },
+
+    { ngx_string("http3_stream_buffer_size"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_size_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_v3_srv_conf_t, quic.stream_buffer_size),
+      NULL },
+
+    { ngx_string("quic_retry"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_v3_srv_conf_t, quic.retry),
+      NULL },
+
+    { ngx_string("quic_gso"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_v3_srv_conf_t, quic.gso_enabled),
+      NULL },
+
+    { ngx_string("quic_host_key"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+      ngx_http_quic_host_key,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      0,
+      NULL },
+
+    { ngx_string("quic_active_connection_id_limit"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_v3_srv_conf_t, quic.active_connection_id_limit),
+      NULL },
+
+      ngx_null_command
+};
+
+
+static ngx_http_module_t  ngx_http_v3_module_ctx = {
+    ngx_http_v3_add_variables,             /* preconfiguration */
+    NULL,                                  /* postconfiguration */
+
+    NULL,                                  /* create main configuration */
+    NULL,                                  /* init main configuration */
+
+    ngx_http_v3_create_srv_conf,           /* create server configuration */
+    ngx_http_v3_merge_srv_conf,            /* merge server configuration */
+
+    NULL,                                  /* create location configuration */
+    NULL                                   /* merge location configuration */
+};
+
+
+ngx_module_t  ngx_http_v3_module = {
+    NGX_MODULE_V1,
+    &ngx_http_v3_module_ctx,               /* module context */
+    ngx_http_v3_commands,                  /* module directives */
+    NGX_HTTP_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_http_variable_t  ngx_http_v3_vars[] = {
+
+    { ngx_string("http3"), NULL, ngx_http_v3_variable, 0, 0, 0 },
+
+      ngx_http_null_variable
+};
+
+static ngx_str_t  ngx_http_quic_salt = ngx_string("ngx_quic");
+
+
+static ngx_int_t
+ngx_http_v3_variable(ngx_http_request_t *r,
+    ngx_http_variable_value_t *v, uintptr_t data)
+{
+    ngx_http_v3_session_t  *h3c;
+
+    if (r->connection->quic) {
+        h3c = ngx_http_v3_get_session(r->connection);
+
+        if (h3c->hq) {
+            v->len = sizeof("hq") - 1;
+            v->valid = 1;
+            v->no_cacheable = 0;
+            v->not_found = 0;
+            v->data = (u_char *) "hq";
+
+            return NGX_OK;
+        }
+
+        v->len = sizeof("h3") - 1;
+        v->valid = 1;
+        v->no_cacheable = 0;
+        v->not_found = 0;
+        v->data = (u_char *) "h3";
+
+        return NGX_OK;
+    }
+
+    *v = ngx_http_variable_null_value;
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_v3_add_variables(ngx_conf_t *cf)
+{
+    ngx_http_variable_t  *var, *v;
+
+    for (v = ngx_http_v3_vars; v->name.len; v++) {
+        var = ngx_http_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_http_v3_create_srv_conf(ngx_conf_t *cf)
+{
+    ngx_http_v3_srv_conf_t  *h3scf;
+
+    h3scf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v3_srv_conf_t));
+    if (h3scf == NULL) {
+        return NULL;
+    }
+
+    /*
+     * set by ngx_pcalloc():
+     *
+     *     h3scf->quic.host_key = { 0, NULL }
+     *     h3scf->quic.stream_reject_code_uni = 0;
+     *     h3scf->quic.disable_active_migration = 0;
+     *     h3scf->quic.timeout = 0;
+     *     h3scf->max_blocked_streams = 0;
+     */
+
+    h3scf->enable = NGX_CONF_UNSET;
+    h3scf->enable_hq = NGX_CONF_UNSET;
+    h3scf->max_table_capacity = NGX_HTTP_V3_MAX_TABLE_CAPACITY;
+    h3scf->max_concurrent_streams = NGX_CONF_UNSET_UINT;
+
+    h3scf->quic.stream_buffer_size = NGX_CONF_UNSET_SIZE;
+    h3scf->quic.max_concurrent_streams_bidi = NGX_CONF_UNSET_UINT;
+    h3scf->quic.max_concurrent_streams_uni = NGX_HTTP_V3_MAX_UNI_STREAMS;
+    h3scf->quic.retry = NGX_CONF_UNSET;
+    h3scf->quic.gso_enabled = NGX_CONF_UNSET;
+    h3scf->quic.stream_close_code = NGX_HTTP_V3_ERR_NO_ERROR;
+    h3scf->quic.stream_reject_code_bidi = NGX_HTTP_V3_ERR_REQUEST_REJECTED;
+    h3scf->quic.active_connection_id_limit = NGX_CONF_UNSET_UINT;
+
+    h3scf->quic.init = ngx_http_v3_init;
+    h3scf->quic.shutdown = ngx_http_v3_shutdown;
+
+    return h3scf;
+}
+
+
+static char *
+ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
+{
+    ngx_http_v3_srv_conf_t *prev = parent;
+    ngx_http_v3_srv_conf_t *conf = child;
+
+    ngx_http_ssl_srv_conf_t  *sscf;
+
+    ngx_conf_merge_value(conf->enable, prev->enable, 1);
+
+    ngx_conf_merge_value(conf->enable_hq, prev->enable_hq, 0);
+
+    ngx_conf_merge_uint_value(conf->max_concurrent_streams,
+                              prev->max_concurrent_streams, 128);
+
+    conf->max_blocked_streams = conf->max_concurrent_streams;
+
+    ngx_conf_merge_size_value(conf->quic.stream_buffer_size,
+                              prev->quic.stream_buffer_size,
+                              65536);
+
+    conf->quic.max_concurrent_streams_bidi = conf->max_concurrent_streams;
+
+    ngx_conf_merge_value(conf->quic.retry, prev->quic.retry, 0);
+    ngx_conf_merge_value(conf->quic.gso_enabled, prev->quic.gso_enabled, 0);
+
+    ngx_conf_merge_str_value(conf->quic.host_key, prev->quic.host_key, "");
+
+    ngx_conf_merge_uint_value(conf->quic.active_connection_id_limit,
+                              prev->quic.active_connection_id_limit,
+                              2);
+
+    if (conf->quic.host_key.len == 0) {
+
+        conf->quic.host_key.len = NGX_QUIC_DEFAULT_HOST_KEY_LEN;
+        conf->quic.host_key.data = ngx_palloc(cf->pool,
+                                              conf->quic.host_key.len);
+        if (conf->quic.host_key.data == NULL) {
+            return NGX_CONF_ERROR;
+        }
+
+        if (RAND_bytes(conf->quic.host_key.data, NGX_QUIC_DEFAULT_HOST_KEY_LEN)
+            <= 0)
+        {
+            return NGX_CONF_ERROR;
+        }
+    }
+
+    if (ngx_quic_derive_key(cf->log, "av_token_key",
+                            &conf->quic.host_key, &ngx_http_quic_salt,
+                            conf->quic.av_token_key, NGX_QUIC_AV_KEY_LEN)
+        != NGX_OK)
+    {
+        return NGX_CONF_ERROR;
+    }
+
+    if (ngx_quic_derive_key(cf->log, "sr_token_key",
+                            &conf->quic.host_key, &ngx_http_quic_salt,
+                            conf->quic.sr_token_key, NGX_QUIC_SR_KEY_LEN)
+        != NGX_OK)
+    {
+        return NGX_CONF_ERROR;
+    }
+
+    sscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_ssl_module);
+    conf->quic.ssl = &sscf->ssl;
+
+    return NGX_CONF_OK;
+}
+
+
+static char *
+ngx_http_quic_host_key(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+    ngx_http_v3_srv_conf_t  *h3scf = conf;
+
+    u_char           *buf;
+    size_t            size;
+    ssize_t           n;
+    ngx_str_t        *value;
+    ngx_file_t        file;
+    ngx_file_info_t   fi;
+    ngx_quic_conf_t  *qcf;
+
+    qcf = &h3scf->quic;
+
+    if (qcf->host_key.len) {
+        return "is duplicate";
+    }
+
+    buf = NULL;
+#if (NGX_SUPPRESS_WARN)
+    size = 0;
+#endif
+
+    value = cf->args->elts;
+
+    if (ngx_conf_full_name(cf->cycle, &value[1], 1) != NGX_OK) {
+        return NGX_CONF_ERROR;
+    }
+
+    ngx_memzero(&file, sizeof(ngx_file_t));
+    file.name = value[1];
+    file.log = cf->log;
+
+    file.fd = ngx_open_file(file.name.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
+
+    if (file.fd == NGX_INVALID_FILE) {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
+                           ngx_open_file_n " \"%V\" failed", &file.name);
+        return NGX_CONF_ERROR;
+    }
+
+    if (ngx_fd_info(file.fd, &fi) == NGX_FILE_ERROR) {
+        ngx_conf_log_error(NGX_LOG_CRIT, cf, ngx_errno,
+                           ngx_fd_info_n " \"%V\" failed", &file.name);
+        goto failed;
+    }
+
+    size = ngx_file_size(&fi);
+
+    if (size == 0) {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                           "\"%V\" zero key size", &file.name);
+        goto failed;
+    }
+
+    buf = ngx_pnalloc(cf->pool, size);
+    if (buf == NULL) {
+        goto failed;
+    }
+
+    n = ngx_read_file(&file, buf, size, 0);
+
+    if (n == NGX_ERROR) {
+        ngx_conf_log_error(NGX_LOG_CRIT, cf, ngx_errno,
+                           ngx_read_file_n " \"%V\" failed", &file.name);
+        goto failed;
+    }
+
+    if ((size_t) n != size) {
+        ngx_conf_log_error(NGX_LOG_CRIT, cf, 0,
+                           ngx_read_file_n " \"%V\" returned only "
+                           "%z bytes instead of %uz", &file.name, n, size);
+        goto failed;
+    }
+
+    qcf->host_key.data = buf;
+    qcf->host_key.len = n;
+
+    if (ngx_close_file(file.fd) == NGX_FILE_ERROR) {
+        ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
+                      ngx_close_file_n " \"%V\" failed", &file.name);
+    }
+
+    return NGX_CONF_OK;
+
+failed:
+
+    if (ngx_close_file(file.fd) == NGX_FILE_ERROR) {
+        ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
+                      ngx_close_file_n " \"%V\" failed", &file.name);
+    }
+
+    if (buf) {
+        ngx_explicit_memzero(buf, size);
+    }
+
+    return NGX_CONF_ERROR;
+}