diff options
Diffstat (limited to 'src/tls/tls_proxy_server_scan.c')
| -rw-r--r-- | src/tls/tls_proxy_server_scan.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/src/tls/tls_proxy_server_scan.c b/src/tls/tls_proxy_server_scan.c new file mode 100644 index 0000000..92da66c --- /dev/null +++ b/src/tls/tls_proxy_server_scan.c @@ -0,0 +1,245 @@ +/*++ +/* NAME +/* tls_proxy_server_scan 3 +/* SUMMARY +/* read TLS_SERVER_XXX structures from stream +/* SYNOPSIS +/* #include <tls_proxy.h> +/* +/* int tls_proxy_server_init_scan(scan_fn, stream, flags, ptr) +/* ATTR_SCAN_COMMON_FN scan_fn; +/* VSTREAM *stream; +/* int flags; +/* void *ptr; +/* +/* tls_proxy_server_init_free(init_props) +/* TLS_SERVER_INIT_PROPS *init_props; +/* +/* int tls_proxy_server_start_scan(scan_fn, stream, flags, ptr) +/* ATTR_SCAN_COMMON_FN scan_fn; +/* VSTREAM *stream; +/* int flags; +/* void *ptr; +/* +/* void tls_proxy_server_start_free(start_props) +/* TLS_SERVER_START_PROPS *start_props; +/* DESCRIPTION +/* tls_proxy_server_init_scan() reads a TLS_SERVER_INIT_PROPS +/* structure from the named stream using the specified attribute +/* scan routine. tls_proxy_server_init_scan() is meant to be passed +/* as a call-back function to attr_scan(), as shown below. +/* +/* tls_proxy_server_init_free() destroys a TLS_SERVER_INIT_PROPS +/* structure that was created by tls_proxy_server_init_scan(). +/* +/* TLS_SERVER_INIT_PROPS *init_props = 0; +/* ... +/* ... RECV_ATTR_FUNC(tls_proxy_server_init_scan, (void *) &init_props) +/* ... +/* if (init_props) +/* tls_proxy_client_init_free(init_props); +/* +/* tls_proxy_server_start_scan() reads a TLS_SERVER_START_PROPS +/* structure from the named stream using the specified attribute +/* scan routine. tls_proxy_server_start_scan() is meant to be passed +/* as a call-back function to attr_scan(), as shown below. +/* +/* tls_proxy_server_start_free() destroys a TLS_SERVER_START_PROPS +/* structure that was created by tls_proxy_server_start_scan(). +/* +/* TLS_SERVER_START_PROPS *start_props = 0; +/* ... +/* ... RECV_ATTR_FUNC(tls_proxy_server_start_scan, (void *) &start_props) +/* ... +/* if (start_props) +/* tls_proxy_server_start_free(start_props); +/* DIAGNOSTICS +/* Fatal: out of memory. +/* LICENSE +/* .ad +/* .fi +/* The Secure Mailer license must be distributed with this software. +/* AUTHOR(S) +/* Wietse Venema +/* Google, Inc. +/* 111 8th Avenue +/* New York, NY 10011, USA +/*--*/ + +#ifdef USE_TLS + +/* System library. */ + +#include <sys_defs.h> + +/* Utility library */ + +#include <attr.h> + +/* TLS library. */ + +#include <tls.h> +#include <tls_proxy.h> + +/* tls_proxy_server_init_scan - receive TLS_SERVER_INIT_PROPS from stream */ + +int tls_proxy_server_init_scan(ATTR_SCAN_COMMON_FN scan_fn, VSTREAM *fp, + int flags, void *ptr) +{ + TLS_SERVER_INIT_PROPS *props + = (TLS_SERVER_INIT_PROPS *) mymalloc(sizeof(*props)); + int ret; + VSTRING *log_param = vstring_alloc(25); + VSTRING *log_level = vstring_alloc(25); + VSTRING *cache_type = vstring_alloc(25); + VSTRING *chain_files = vstring_alloc(25); + VSTRING *cert_file = vstring_alloc(25); + VSTRING *key_file = vstring_alloc(25); + VSTRING *dcert_file = vstring_alloc(25); + VSTRING *dkey_file = vstring_alloc(25); + VSTRING *eccert_file = vstring_alloc(25); + VSTRING *eckey_file = vstring_alloc(25); + VSTRING *CAfile = vstring_alloc(25); + VSTRING *CApath = vstring_alloc(25); + VSTRING *protocols = vstring_alloc(25); + VSTRING *eecdh_grade = vstring_alloc(25); + VSTRING *dh1024_param_file = vstring_alloc(25); + VSTRING *dh512_param_file = vstring_alloc(25); + VSTRING *mdalg = vstring_alloc(25); + + /* + * Note: memset() is not a portable way to initialize non-integer types. + */ + memset(props, 0, sizeof(*props)); + ret = scan_fn(fp, flags | ATTR_FLAG_MORE, + RECV_ATTR_STR(TLS_ATTR_LOG_PARAM, log_param), + RECV_ATTR_STR(TLS_ATTR_LOG_LEVEL, log_level), + RECV_ATTR_INT(TLS_ATTR_VERIFYDEPTH, &props->verifydepth), + RECV_ATTR_STR(TLS_ATTR_CACHE_TYPE, cache_type), + RECV_ATTR_INT(TLS_ATTR_SET_SESSID, &props->set_sessid), + RECV_ATTR_STR(TLS_ATTR_CHAIN_FILES, chain_files), + RECV_ATTR_STR(TLS_ATTR_CERT_FILE, cert_file), + RECV_ATTR_STR(TLS_ATTR_KEY_FILE, key_file), + RECV_ATTR_STR(TLS_ATTR_DCERT_FILE, dcert_file), + RECV_ATTR_STR(TLS_ATTR_DKEY_FILE, dkey_file), + RECV_ATTR_STR(TLS_ATTR_ECCERT_FILE, eccert_file), + RECV_ATTR_STR(TLS_ATTR_ECKEY_FILE, eckey_file), + RECV_ATTR_STR(TLS_ATTR_CAFILE, CAfile), + RECV_ATTR_STR(TLS_ATTR_CAPATH, CApath), + RECV_ATTR_STR(TLS_ATTR_PROTOCOLS, protocols), + RECV_ATTR_STR(TLS_ATTR_EECDH_GRADE, eecdh_grade), + RECV_ATTR_STR(TLS_ATTR_DH1K_PARAM_FILE, dh1024_param_file), + RECV_ATTR_STR(TLS_ATTR_DH512_PARAM_FILE, dh512_param_file), + RECV_ATTR_INT(TLS_ATTR_ASK_CCERT, &props->ask_ccert), + RECV_ATTR_STR(TLS_ATTR_MDALG, mdalg), + ATTR_TYPE_END); + /* Always construct a well-formed structure. */ + props->log_param = vstring_export(log_param); + props->log_level = vstring_export(log_level); + props->cache_type = vstring_export(cache_type); + props->chain_files = vstring_export(chain_files); + props->cert_file = vstring_export(cert_file); + props->key_file = vstring_export(key_file); + props->dcert_file = vstring_export(dcert_file); + props->dkey_file = vstring_export(dkey_file); + props->eccert_file = vstring_export(eccert_file); + props->eckey_file = vstring_export(eckey_file); + props->CAfile = vstring_export(CAfile); + props->CApath = vstring_export(CApath); + props->protocols = vstring_export(protocols); + props->eecdh_grade = vstring_export(eecdh_grade); + props->dh1024_param_file = vstring_export(dh1024_param_file); + props->dh512_param_file = vstring_export(dh512_param_file); + props->mdalg = vstring_export(mdalg); + ret = (ret == 20 ? 1 : -1); + if (ret != 1) { + tls_proxy_server_init_free(props); + props = 0; + } + *(TLS_SERVER_INIT_PROPS **) ptr = props; + return (ret); +} + +/* tls_proxy_server_init_free - destroy TLS_SERVER_INIT_PROPS structure */ + +void tls_proxy_server_init_free(TLS_SERVER_INIT_PROPS *props) +{ + myfree((void *) props->log_param); + myfree((void *) props->log_level); + myfree((void *) props->cache_type); + myfree((void *) props->chain_files); + myfree((void *) props->cert_file); + myfree((void *) props->key_file); + myfree((void *) props->dcert_file); + myfree((void *) props->dkey_file); + myfree((void *) props->eccert_file); + myfree((void *) props->eckey_file); + myfree((void *) props->CAfile); + myfree((void *) props->CApath); + myfree((void *) props->protocols); + myfree((void *) props->eecdh_grade); + myfree((void *) props->dh1024_param_file); + myfree((void *) props->dh512_param_file); + myfree((void *) props->mdalg); + myfree((void *) props); +} + +/* tls_proxy_server_start_scan - receive TLS_SERVER_START_PROPS from stream */ + +int tls_proxy_server_start_scan(ATTR_SCAN_COMMON_FN scan_fn, VSTREAM *fp, + int flags, void *ptr) +{ + TLS_SERVER_START_PROPS *props + = (TLS_SERVER_START_PROPS *) mymalloc(sizeof(*props)); + int ret; + VSTRING *serverid = vstring_alloc(25); + VSTRING *namaddr = vstring_alloc(25); + VSTRING *cipher_grade = vstring_alloc(25); + VSTRING *cipher_exclusions = vstring_alloc(25); + VSTRING *mdalg = vstring_alloc(25); + + /* + * Note: memset() is not a portable way to initialize non-integer types. + */ + memset(props, 0, sizeof(*props)); + props->ctx = 0; + props->stream = 0; + /* XXX Caller sets fd. */ + ret = scan_fn(fp, flags | ATTR_FLAG_MORE, + RECV_ATTR_INT(TLS_ATTR_TIMEOUT, &props->timeout), + RECV_ATTR_INT(TLS_ATTR_REQUIRECERT, &props->requirecert), + RECV_ATTR_STR(TLS_ATTR_SERVERID, serverid), + RECV_ATTR_STR(TLS_ATTR_NAMADDR, namaddr), + RECV_ATTR_STR(TLS_ATTR_CIPHER_GRADE, cipher_grade), + RECV_ATTR_STR(TLS_ATTR_CIPHER_EXCLUSIONS, + cipher_exclusions), + RECV_ATTR_STR(TLS_ATTR_MDALG, mdalg), + ATTR_TYPE_END); + props->serverid = vstring_export(serverid); + props->namaddr = vstring_export(namaddr); + props->cipher_grade = vstring_export(cipher_grade); + props->cipher_exclusions = vstring_export(cipher_exclusions); + props->mdalg = vstring_export(mdalg); + ret = (ret == 7 ? 1 : -1); + if (ret != 1) { + tls_proxy_server_start_free(props); + props = 0; + } + *(TLS_SERVER_START_PROPS **) ptr = props; + return (ret); +} + +/* tls_proxy_server_start_free - destroy TLS_SERVER_START_PROPS structure */ + +void tls_proxy_server_start_free(TLS_SERVER_START_PROPS *props) +{ + /* XXX Caller closes fd. */ + myfree((void *) props->serverid); + myfree((void *) props->namaddr); + myfree((void *) props->cipher_grade); + myfree((void *) props->cipher_exclusions); + myfree((void *) props->mdalg); + myfree((void *) props); +} + +#endif |