diff options
Diffstat (limited to 'src/imap/ngx_imap_ssl_module.c')
| -rw-r--r-- | src/imap/ngx_imap_ssl_module.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/imap/ngx_imap_ssl_module.c b/src/imap/ngx_imap_ssl_module.c new file mode 100644 index 000000000..e5834a631 --- /dev/null +++ b/src/imap/ngx_imap_ssl_module.c @@ -0,0 +1,174 @@ + +/* + * 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" + + +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 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("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_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_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 module */ + NULL /* init process */ +}; + + +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->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->enable = 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_conf_merge_value(conf->enable, prev->enable, 0); + + if (conf->enable == 0) { + return NGX_CONF_OK; + } + + 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, ""); + + + /* TODO: configure methods */ + + conf->ssl_ctx = SSL_CTX_new(SSLv23_server_method()); + + if (conf->ssl_ctx == NULL) { + ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, "SSL_CTX_new() failed"); + return NGX_CONF_ERROR; + } + + if (ngx_pool_cleanup_add(cf->pool, ngx_ssl_cleanup_ctx, conf->ssl_ctx) + == NULL) + { + return NGX_CONF_ERROR; + } + + +#if 0 + SSL_CTX_set_options(conf->ssl_ctx, SSL_OP_ALL); + SSL_CTX_set_options(conf->ssl_ctx, SSL_OP_NO_SSLv3); + SSL_CTX_set_options(conf->ssl_ctx, SSL_OP_SINGLE_DH_USE); +#endif + + 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); + } + } + + if (SSL_CTX_use_certificate_chain_file(conf->ssl_ctx, + (char *) conf->certificate.data) == 0) + { + ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, + "SSL_CTX_use_certificate_chain_file(\"%s\") failed", + conf->certificate.data); + return NGX_CONF_ERROR; + } + + + if (SSL_CTX_use_PrivateKey_file(conf->ssl_ctx, + (char *) conf->certificate_key.data, + SSL_FILETYPE_PEM) == 0) + { + ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, + "SSL_CTX_use_PrivateKey_file(\"%s\") failed", + conf->certificate_key.data); + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} |