Mercurial > hg > nginx-quic
diff src/http/modules/ngx_http_ssl_filter.c @ 383:c05876036128
nginx-0.0.7-2004-07-08-19:17:47 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 08 Jul 2004 15:17:47 +0000 |
parents | |
children | e7054aaedf68 |
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new file mode 100644 --- /dev/null +++ b/src/http/modules/ngx_http_ssl_filter.c @@ -0,0 +1,248 @@ + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_http.h> + +#include <openssl/ssl.h> +#include <openssl/err.h> + + +#define NGX_DEFLAUT_CERTIFICATE "cert.pem" +#define NGX_DEFLAUT_CERTIFICATE_KEY "cert.pem" + + +typedef struct { + ngx_flag_t enable; + ngx_str_t certificate; + ngx_str_t certificate_key; +} ngx_http_ssl_srv_conf_t; + + +typedef struct { + SSL *ssl; + SSL_CTX *ssl_ctx; + + unsigned accepted; +} ngx_http_ssl_ctx_t; + + +static ngx_http_ssl_ctx_t *ngx_http_ssl_create_ctx(ngx_http_request_t *r); +static void ngx_http_ssl_error(ngx_uint_t level, ngx_log_t *log, int err, + char *fmt, ...); +static void *ngx_http_ssl_create_srv_conf(ngx_conf_t *cf); +static char *ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, + void *parent, void *child); +static ngx_int_t ngx_http_ssl_filter_init(ngx_cycle_t *cycle); + + +static ngx_command_t ngx_http_charset_filter_commands[] = { + + { ngx_string("ssl_"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, + ngx_conf_set_flag_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_ssl_srv_conf_t, enable), + NULL }, + + { ngx_string("ssl_certificate"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_str_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_ssl_srv_conf_t, certificate), + NULL }, + + { ngx_string("ssl_certificate_key"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_str_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_ssl_srv_conf_t, certificate_key), + NULL }, + + ngx_null_command +}; + + +static ngx_http_module_t ngx_http_ssl_filter_module_ctx = { + NULL, /* pre conf */ + + NULL, /* create main configuration */ + NULL, /* init main configuration */ + + ngx_http_ssl_create_srv_conf, /* create server configuration */ + ngx_http_ssl_merge_srv_conf, /* merge server configuration */ + + NULL, /* create location configuration */ + NULL, /* merge location configuration */ +}; + + +ngx_module_t ngx_http_ssl_filter_module = { + NGX_MODULE, + &ngx_http_ssl_filter_module_ctx, /* module context */ + NULL, /* module directives */ + NGX_HTTP_MODULE, /* module type */ + ngx_http_ssl_filter_init, /* init module */ + NULL /* init process */ +}; + + +ngx_int_t ngx_http_ssl_read(ngx_http_request_t *r) +{ + int rc; + ngx_http_ssl_ctx_t *ctx; + + ctx = ngx_http_get_module_ctx(r, ngx_http_ssl_filter_module); + + if (ctx == NULL) { + ctx = ngx_http_ssl_create_ctx(r); + + if (ctx == NULL) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + } + + if (!ctx->accepted) { + rc = SSL_accept(ctx->ssl); + + if (rc != 1) { + rc = SSL_get_error(ctx->ssl, rc); + + if (rc == SSL_ERROR_WANT_READ || rc == SSL_ERROR_WANT_WRITE) { + return NGX_AGAIN; + } + + ngx_http_ssl_error(NGX_LOG_ALERT, r->connection->log, rc, + "SSL_accept() failed"); + return NGX_ERROR; + } + + ctx->accepted = 1; + } + + return NGX_OK; +} + + +static ngx_http_ssl_ctx_t *ngx_http_ssl_create_ctx(ngx_http_request_t *r) +{ + ngx_http_ssl_ctx_t *ctx; + ngx_http_ssl_srv_conf_t *scf; + + ngx_http_create_ctx(r, ctx, ngx_http_ssl_filter_module, + sizeof(ngx_http_ssl_ctx_t), NULL); + + /* TODO: configure methods */ + ctx->ssl_ctx = SSL_CTX_new(SSLv23_server_method()); + + if (ctx->ssl_ctx == NULL) { + ngx_http_ssl_error(NGX_LOG_ALERT, r->connection->log, 0, + "SSL_CTX_new() failed"); + return NULL; + } + + scf = ngx_http_get_module_srv_conf(r, ngx_http_ssl_filter_module); + + if (SSL_CTX_use_certificate_file(ctx->ssl_ctx, scf->certificate.data, + SSL_FILETYPE_PEM) == 0) { + ngx_http_ssl_error(NGX_LOG_ALERT, r->connection->log, 0, + "SSL_CTX_use_certificate_file() failed"); + return NULL; + } + + if (SSL_CTX_use_PrivateKey_file(ctx->ssl_ctx, scf->certificate_key.data, + SSL_FILETYPE_PEM) == 0) { + ngx_http_ssl_error(NGX_LOG_ALERT, r->connection->log, 0, + "SSL_CTX_use_PrivateKey_file() failed"); + return NULL; + } + + ctx->ssl = SSL_new(ctx->ssl_ctx); + + if (ctx->ssl == NULL) { + ngx_http_ssl_error(NGX_LOG_ALERT, r->connection->log, 0, + "SSL_new() failed"); + return NULL; + } + + if (SSL_set_fd(ctx->ssl, r->connection->fd) == 0) { + ngx_http_ssl_error(NGX_LOG_ALERT, r->connection->log, 0, + "SSL_set_fd() failed"); + return NULL; + } + + return ctx; +} + + +static void ngx_http_ssl_error(ngx_uint_t level, ngx_log_t *log, int err, + char *fmt, ...) +{ + int len; + char errstr[NGX_MAX_CONF_ERRSTR]; + va_list args; + + va_start(args, fmt); + len = ngx_vsnprintf(errstr, sizeof(errstr) - 1, fmt, args); + va_end(args); + + errstr[len++] = ' '; + errstr[len++] = '('; + errstr[len++] = 'S'; + errstr[len++] = 'S'; + errstr[len++] = 'L'; + errstr[len++] = ':'; + errstr[len++] = ' '; + + ERR_error_string_n(ERR_get_error(), errstr + len, sizeof(errstr) - len - 1); + + ngx_log_error(level, log, 0, "%s)", errstr); +} + + +static void *ngx_http_ssl_create_srv_conf(ngx_conf_t *cf) +{ + ngx_http_ssl_srv_conf_t *scf; + + if (!(scf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ssl_srv_conf_t)))) { + return NGX_CONF_ERROR; + } + + scf->enable = NGX_CONF_UNSET; + + return scf; +} + + +static char *ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, + void *parent, void *child) +{ + ngx_http_ssl_srv_conf_t *prev = parent; + ngx_http_ssl_srv_conf_t *conf = child; + + ngx_conf_merge_value(conf->enable, prev->enable, 0); + + ngx_conf_merge_str_value(conf->certificate, prev->certificate, + NGX_DEFLAUT_CERTIFICATE); + + ngx_conf_merge_str_value(conf->certificate_key, prev->certificate_key, + NGX_DEFLAUT_CERTIFICATE_KEY); + + return NGX_CONF_OK; +} + + +static ngx_int_t ngx_http_ssl_filter_init(ngx_cycle_t *cycle) +{ + SSL_library_init(); + SSL_load_error_strings(); + +#if 0 + ngx_http_next_header_filter = ngx_http_top_header_filter; + ngx_http_top_header_filter = ngx_http_ssl_header_filter; + + ngx_http_next_body_filter = ngx_http_top_body_filter; + ngx_http_top_body_filter = ngx_http_ssl_body_filter; +#endif + + return NGX_OK; +}