diff options
Diffstat (limited to 'src/imap/ngx_imap_ssl_module.c')
| -rw-r--r-- | src/imap/ngx_imap_ssl_module.c | 393 |
1 files changed, 0 insertions, 393 deletions
diff --git a/src/imap/ngx_imap_ssl_module.c b/src/imap/ngx_imap_ssl_module.c deleted file mode 100644 index ac4a08629..000000000 --- a/src/imap/ngx_imap_ssl_module.c +++ /dev/null @@ -1,393 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - */ - - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_imap.h> - - -#define NGX_DEFLAUT_CERTIFICATE "cert.pem" -#define NGX_DEFLAUT_CERTIFICATE_KEY "cert.pem" -#define NGX_DEFLAUT_CIPHERS "ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP" - - -static void *ngx_imap_ssl_create_conf(ngx_conf_t *cf); -static char *ngx_imap_ssl_merge_conf(ngx_conf_t *cf, void *parent, void *child); -static char *ngx_imap_ssl_session_cache(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf); - -#if !defined (SSL_OP_CIPHER_SERVER_PREFERENCE) - -static char *ngx_imap_ssl_nosupported(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf); - -static char ngx_imap_ssl_openssl097[] = "OpenSSL 0.9.7 and higher"; - -#endif - - -static ngx_conf_enum_t ngx_http_starttls_state[] = { - { ngx_string("off"), NGX_IMAP_STARTTLS_OFF }, - { ngx_string("on"), NGX_IMAP_STARTTLS_ON }, - { ngx_string("only"), NGX_IMAP_STARTTLS_ONLY }, - { ngx_null_string, 0 } -}; - - - -static ngx_conf_bitmask_t ngx_imap_ssl_protocols[] = { - { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, - { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, - { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, - { ngx_null_string, 0 } -}; - - -static ngx_command_t ngx_imap_ssl_commands[] = { - - { ngx_string("ssl"), - NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_FLAG, - ngx_conf_set_flag_slot, - NGX_IMAP_SRV_CONF_OFFSET, - offsetof(ngx_imap_ssl_conf_t, enable), - NULL }, - - { ngx_string("starttls"), - NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1, - ngx_conf_set_enum_slot, - NGX_IMAP_SRV_CONF_OFFSET, - offsetof(ngx_imap_ssl_conf_t, starttls), - ngx_http_starttls_state }, - - { ngx_string("ssl_certificate"), - NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1, - ngx_conf_set_str_slot, - NGX_IMAP_SRV_CONF_OFFSET, - offsetof(ngx_imap_ssl_conf_t, certificate), - NULL }, - - { ngx_string("ssl_certificate_key"), - NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1, - ngx_conf_set_str_slot, - NGX_IMAP_SRV_CONF_OFFSET, - offsetof(ngx_imap_ssl_conf_t, certificate_key), - NULL }, - - { ngx_string("ssl_protocols"), - NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_1MORE, - ngx_conf_set_bitmask_slot, - NGX_IMAP_SRV_CONF_OFFSET, - offsetof(ngx_imap_ssl_conf_t, protocols), - &ngx_imap_ssl_protocols }, - - { ngx_string("ssl_ciphers"), - NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1, - ngx_conf_set_str_slot, - NGX_IMAP_SRV_CONF_OFFSET, - offsetof(ngx_imap_ssl_conf_t, ciphers), - NULL }, - - { ngx_string("ssl_prefer_server_ciphers"), - NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_FLAG, -#ifdef SSL_OP_CIPHER_SERVER_PREFERENCE - ngx_conf_set_flag_slot, - NGX_IMAP_SRV_CONF_OFFSET, - offsetof(ngx_imap_ssl_conf_t, prefer_server_ciphers), - NULL }, -#else - ngx_imap_ssl_nosupported, 0, 0, ngx_imap_ssl_openssl097 }, -#endif - - { ngx_string("ssl_session_cache"), - NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE12, - ngx_imap_ssl_session_cache, - NGX_IMAP_SRV_CONF_OFFSET, - 0, - NULL }, - - { ngx_string("ssl_session_timeout"), - NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1, - ngx_conf_set_sec_slot, - NGX_IMAP_SRV_CONF_OFFSET, - offsetof(ngx_imap_ssl_conf_t, session_timeout), - NULL }, - - ngx_null_command -}; - - -static ngx_imap_module_t ngx_imap_ssl_module_ctx = { - NULL, /* create main configuration */ - NULL, /* init main configuration */ - - ngx_imap_ssl_create_conf, /* create server configuration */ - ngx_imap_ssl_merge_conf /* merge server configuration */ -}; - - -ngx_module_t ngx_imap_ssl_module = { - NGX_MODULE_V1, - &ngx_imap_ssl_module_ctx, /* module context */ - ngx_imap_ssl_commands, /* module directives */ - NGX_IMAP_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_str_t ngx_imap_ssl_sess_id_ctx = ngx_string("IMAP"); - - -static void * -ngx_imap_ssl_create_conf(ngx_conf_t *cf) -{ - ngx_imap_ssl_conf_t *scf; - - scf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_ssl_conf_t)); - if (scf == NULL) { - return NGX_CONF_ERROR; - } - - /* - * set by ngx_pcalloc(): - * - * scf->protocols = 0; - * scf->certificate.len = 0; - * scf->certificate.data = NULL; - * scf->certificate_key.len = 0; - * scf->certificate_key.data = NULL; - * scf->ciphers.len = 0; - * scf->ciphers.data = NULL; - * scf->shm_zone = NULL; - */ - - scf->enable = NGX_CONF_UNSET; - scf->starttls = NGX_CONF_UNSET; - scf->prefer_server_ciphers = NGX_CONF_UNSET; - scf->builtin_session_cache = NGX_CONF_UNSET; - scf->session_timeout = NGX_CONF_UNSET; - - return scf; -} - - -static char * -ngx_imap_ssl_merge_conf(ngx_conf_t *cf, void *parent, void *child) -{ - ngx_imap_ssl_conf_t *prev = parent; - ngx_imap_ssl_conf_t *conf = child; - - ngx_pool_cleanup_t *cln; - - ngx_conf_merge_value(conf->enable, prev->enable, 0); - ngx_conf_merge_value(conf->starttls, prev->starttls, NGX_IMAP_STARTTLS_OFF); - - if (conf->enable == 0 && conf->starttls == NGX_IMAP_STARTTLS_OFF) { - return NGX_CONF_OK; - } - - ngx_conf_merge_value(conf->session_timeout, - prev->session_timeout, 300); - - ngx_conf_merge_value(conf->prefer_server_ciphers, - prev->prefer_server_ciphers, 0); - - ngx_conf_merge_bitmask_value(conf->protocols, prev->protocols, - (NGX_CONF_BITMASK_SET - |NGX_SSL_SSLv2|NGX_SSL_SSLv3|NGX_SSL_TLSv1)); - - 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); - - ngx_conf_merge_str_value(conf->ciphers, prev->ciphers, NGX_DEFLAUT_CIPHERS); - - - conf->ssl.log = cf->log; - - if (ngx_ssl_create(&conf->ssl, conf->protocols, NULL) != NGX_OK) { - return NGX_CONF_ERROR; - } - - cln = ngx_pool_cleanup_add(cf->pool, 0); - if (cln == NULL) { - return NGX_CONF_ERROR; - } - - cln->handler = ngx_ssl_cleanup_ctx; - cln->data = &conf->ssl; - - if (ngx_ssl_certificate(cf, &conf->ssl, &conf->certificate, - &conf->certificate_key) - != NGX_OK) - { - return NGX_CONF_ERROR; - } - - if (conf->ciphers.len) { - if (SSL_CTX_set_cipher_list(conf->ssl.ctx, - (const char *) conf->ciphers.data) - == 0) - { - ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, - "SSL_CTX_set_cipher_list(\"%V\") failed", - &conf->ciphers); - } - } - -#ifdef SSL_OP_CIPHER_SERVER_PREFERENCE - - if (conf->prefer_server_ciphers) { - SSL_CTX_set_options(conf->ssl.ctx, SSL_OP_CIPHER_SERVER_PREFERENCE); - } - -#endif - - if (ngx_ssl_generate_rsa512_key(&conf->ssl) != NGX_OK) { - return NGX_CONF_ERROR; - } - - ngx_conf_merge_value(conf->builtin_session_cache, - prev->builtin_session_cache, - NGX_SSL_DFLT_BUILTIN_SCACHE); - - if (conf->shm_zone == NULL) { - conf->shm_zone = prev->shm_zone; - } - - if (ngx_ssl_session_cache(&conf->ssl, &ngx_imap_ssl_sess_id_ctx, - conf->builtin_session_cache, - conf->shm_zone, conf->session_timeout) - != NGX_OK) - { - return NGX_CONF_ERROR; - } - - return NGX_CONF_OK; -} - - -static char * -ngx_imap_ssl_session_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_imap_ssl_conf_t *scf = conf; - - size_t len; - ngx_str_t *value, name, size; - ngx_int_t n; - ngx_uint_t i, j; - - value = cf->args->elts; - - for (i = 1; i < cf->args->nelts; i++) { - - if (ngx_strcmp(value[i].data, "builtin") == 0) { - scf->builtin_session_cache = NGX_SSL_DFLT_BUILTIN_SCACHE; - continue; - } - - if (value[i].len > sizeof("builtin:") - 1 - && ngx_strncmp(value[i].data, "builtin:", sizeof("builtin:") - 1) - == 0) - { - n = ngx_atoi(value[i].data + sizeof("builtin:") - 1, - value[i].len - (sizeof("builtin:") - 1)); - - if (n == NGX_ERROR) { - goto invalid; - } - - scf->builtin_session_cache = n; - - continue; - } - - if (value[i].len > sizeof("shared:") - 1 - && ngx_strncmp(value[i].data, "shared:", sizeof("shared:") - 1) - == 0) - { - len = 0; - - for (j = sizeof("shared:") - 1; j < value[i].len; j++) { - if (value[i].data[j] == ':') { - break; - } - - len++; - } - - if (len == 0) { - goto invalid; - } - - name.len = len; - name.data = value[i].data + sizeof("shared:") - 1; - - size.len = value[i].len - j - 1; - size.data = name.data + len + 1; - - n = ngx_parse_size(&size); - - if (n == NGX_ERROR) { - goto invalid; - } - - if (n < (ngx_int_t) (8 * ngx_pagesize)) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "session cache \"%V\" is too small", - &value[i]); - - return NGX_CONF_ERROR; - } - - scf->shm_zone = ngx_shared_memory_add(cf, &name, n, - &ngx_imap_ssl_module); - if (scf->shm_zone == NULL) { - return NGX_CONF_ERROR; - } - - continue; - } - - goto invalid; - } - - if (scf->shm_zone && scf->builtin_session_cache == NGX_CONF_UNSET) { - scf->builtin_session_cache = NGX_SSL_NO_BUILTIN_SCACHE; - } - - return NGX_CONF_OK; - -invalid: - - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid session cache \"%V\"", &value[i]); - - return NGX_CONF_ERROR; -} - - -#if !defined (SSL_OP_CIPHER_SERVER_PREFERENCE) - -static char * -ngx_imap_ssl_nosupported(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "\"%V\" directive is available only in %s,", - &cmd->name, cmd->post); - - return NGX_CONF_ERROR; -} - -#endif |