diff options
Diffstat (limited to 'sample/sample-plugins/defer')
| -rw-r--r-- | sample/sample-plugins/defer/simple.c | 393 |
1 files changed, 214 insertions, 179 deletions
diff --git a/sample/sample-plugins/defer/simple.c b/sample/sample-plugins/defer/simple.c index 6539865..ad1bbb0 100644 --- a/sample/sample-plugins/defer/simple.c +++ b/sample/sample-plugins/defer/simple.c @@ -5,7 +5,7 @@ * packet encryption, packet authentication, and * packet compression. * - * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net> + * Copyright (C) 2002-2017 OpenVPN Technologies, Inc. <sales@openvpn.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 @@ -25,7 +25,7 @@ /* * This file implements a simple OpenVPN plugin module which * will test deferred authentication and packet filtering. - * + * * Will run on Windows or *nix. * * Sample usage: @@ -68,13 +68,13 @@ */ struct plugin_context { - int test_deferred_auth; - int test_packet_filter; + int test_deferred_auth; + int test_packet_filter; }; struct plugin_per_client_context { - int n_calls; - bool generated_pf_file; + int n_calls; + bool generated_pf_file; }; /* @@ -83,223 +83,258 @@ struct plugin_per_client_context { * if found or NULL otherwise. */ static const char * -get_env (const char *name, const char *envp[]) +get_env(const char *name, const char *envp[]) { - if (envp) + if (envp) { - int i; - const int namelen = strlen (name); - for (i = 0; envp[i]; ++i) - { - if (!strncmp (envp[i], name, namelen)) - { - const char *cp = envp[i] + namelen; - if (*cp == '=') - return cp + 1; - } - } + int i; + const int namelen = strlen(name); + for (i = 0; envp[i]; ++i) + { + if (!strncmp(envp[i], name, namelen)) + { + const char *cp = envp[i] + namelen; + if (*cp == '=') + { + return cp + 1; + } + } + } } - return NULL; + return NULL; } /* used for safe printf of possible NULL strings */ static const char * -np (const char *str) +np(const char *str) { - if (str) - return str; - else - return "[NULL]"; + if (str) + { + return str; + } + else + { + return "[NULL]"; + } } static int -atoi_null0 (const char *str) +atoi_null0(const char *str) { - if (str) - return atoi (str); - else - return 0; + if (str) + { + return atoi(str); + } + else + { + return 0; + } } OPENVPN_EXPORT openvpn_plugin_handle_t -openvpn_plugin_open_v1 (unsigned int *type_mask, const char *argv[], const char *envp[]) +openvpn_plugin_open_v1(unsigned int *type_mask, const char *argv[], const char *envp[]) { - struct plugin_context *context; - - printf ("FUNC: openvpn_plugin_open_v1\n"); - - /* - * Allocate our context - */ - context = (struct plugin_context *) calloc (1, sizeof (struct plugin_context)); - - context->test_deferred_auth = atoi_null0 (get_env ("test_deferred_auth", envp)); - printf ("TEST_DEFERRED_AUTH %d\n", context->test_deferred_auth); - - context->test_packet_filter = atoi_null0 (get_env ("test_packet_filter", envp)); - printf ("TEST_PACKET_FILTER %d\n", context->test_packet_filter); - - /* - * Which callbacks to intercept. - */ - *type_mask = - OPENVPN_PLUGIN_MASK (OPENVPN_PLUGIN_UP) | - OPENVPN_PLUGIN_MASK (OPENVPN_PLUGIN_DOWN) | - OPENVPN_PLUGIN_MASK (OPENVPN_PLUGIN_ROUTE_UP) | - OPENVPN_PLUGIN_MASK (OPENVPN_PLUGIN_IPCHANGE) | - OPENVPN_PLUGIN_MASK (OPENVPN_PLUGIN_TLS_VERIFY) | - OPENVPN_PLUGIN_MASK (OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY) | - OPENVPN_PLUGIN_MASK (OPENVPN_PLUGIN_CLIENT_CONNECT_V2) | - OPENVPN_PLUGIN_MASK (OPENVPN_PLUGIN_CLIENT_DISCONNECT) | - OPENVPN_PLUGIN_MASK (OPENVPN_PLUGIN_LEARN_ADDRESS) | - OPENVPN_PLUGIN_MASK (OPENVPN_PLUGIN_TLS_FINAL) | - OPENVPN_PLUGIN_MASK (OPENVPN_PLUGIN_ENABLE_PF); - - return (openvpn_plugin_handle_t) context; + struct plugin_context *context; + + printf("FUNC: openvpn_plugin_open_v1\n"); + + /* + * Allocate our context + */ + context = (struct plugin_context *) calloc(1, sizeof(struct plugin_context)); + + context->test_deferred_auth = atoi_null0(get_env("test_deferred_auth", envp)); + printf("TEST_DEFERRED_AUTH %d\n", context->test_deferred_auth); + + context->test_packet_filter = atoi_null0(get_env("test_packet_filter", envp)); + printf("TEST_PACKET_FILTER %d\n", context->test_packet_filter); + + /* + * Which callbacks to intercept. + */ + *type_mask = + OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_UP) + |OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_DOWN) + |OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_ROUTE_UP) + |OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_IPCHANGE) + |OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_TLS_VERIFY) + |OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY) + |OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_CLIENT_CONNECT_V2) + |OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_CLIENT_DISCONNECT) + |OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_LEARN_ADDRESS) + |OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_TLS_FINAL) + |OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_ENABLE_PF); + + return (openvpn_plugin_handle_t) context; } static int -auth_user_pass_verify (struct plugin_context *context, struct plugin_per_client_context *pcc, const char *argv[], const char *envp[]) +auth_user_pass_verify(struct plugin_context *context, struct plugin_per_client_context *pcc, const char *argv[], const char *envp[]) { - if (context->test_deferred_auth) + if (context->test_deferred_auth) { - /* get username/password from envp string array */ - const char *username = get_env ("username", envp); - const char *password = get_env ("password", envp); - - /* get auth_control_file filename from envp string array*/ - const char *auth_control_file = get_env ("auth_control_file", envp); - - printf ("DEFER u='%s' p='%s' acf='%s'\n", - np(username), - np(password), - np(auth_control_file)); - - /* Authenticate asynchronously in n seconds */ - if (auth_control_file) - { - char buf[256]; - int auth = 2; - sscanf (username, "%d", &auth); - snprintf (buf, sizeof(buf), "( sleep %d ; echo AUTH %s %d ; echo %d >%s ) &", - context->test_deferred_auth, - auth_control_file, - auth, - pcc->n_calls < auth, - auth_control_file); - printf ("%s\n", buf); - system (buf); - pcc->n_calls++; - return OPENVPN_PLUGIN_FUNC_DEFERRED; - } - else - return OPENVPN_PLUGIN_FUNC_ERROR; + /* get username/password from envp string array */ + const char *username = get_env("username", envp); + const char *password = get_env("password", envp); + + /* get auth_control_file filename from envp string array*/ + const char *auth_control_file = get_env("auth_control_file", envp); + + printf("DEFER u='%s' p='%s' acf='%s'\n", + np(username), + np(password), + np(auth_control_file)); + + /* Authenticate asynchronously in n seconds */ + if (auth_control_file) + { + char buf[256]; + int auth = 2; + sscanf(username, "%d", &auth); + snprintf(buf, sizeof(buf), "( sleep %d ; echo AUTH %s %d ; echo %d >%s ) &", + context->test_deferred_auth, + auth_control_file, + auth, + pcc->n_calls < auth, + auth_control_file); + printf("%s\n", buf); + system(buf); + pcc->n_calls++; + return OPENVPN_PLUGIN_FUNC_DEFERRED; + } + else + { + return OPENVPN_PLUGIN_FUNC_ERROR; + } + } + else + { + return OPENVPN_PLUGIN_FUNC_SUCCESS; } - else - return OPENVPN_PLUGIN_FUNC_SUCCESS; } static int -tls_final (struct plugin_context *context, struct plugin_per_client_context *pcc, const char *argv[], const char *envp[]) +tls_final(struct plugin_context *context, struct plugin_per_client_context *pcc, const char *argv[], const char *envp[]) { - if (context->test_packet_filter) + if (context->test_packet_filter) + { + if (!pcc->generated_pf_file) + { + const char *pff = get_env("pf_file", envp); + const char *cn = get_env("username", envp); + if (pff && cn) + { + char buf[256]; + snprintf(buf, sizeof(buf), "( sleep %d ; echo PF %s/%s ; cp \"%s.pf\" \"%s\" ) &", + context->test_packet_filter, cn, pff, cn, pff); + printf("%s\n", buf); + system(buf); + pcc->generated_pf_file = true; + return OPENVPN_PLUGIN_FUNC_SUCCESS; + } + else + { + return OPENVPN_PLUGIN_FUNC_ERROR; + } + } + else + { + return OPENVPN_PLUGIN_FUNC_ERROR; + } + } + else { - if (!pcc->generated_pf_file) - { - const char *pff = get_env ("pf_file", envp); - const char *cn = get_env ("username", envp); - if (pff && cn) - { - char buf[256]; - snprintf (buf, sizeof(buf), "( sleep %d ; echo PF %s/%s ; cp \"%s.pf\" \"%s\" ) &", - context->test_packet_filter, cn, pff, cn, pff); - printf ("%s\n", buf); - system (buf); - pcc->generated_pf_file = true; - return OPENVPN_PLUGIN_FUNC_SUCCESS; - } - else - return OPENVPN_PLUGIN_FUNC_ERROR; - } - else - return OPENVPN_PLUGIN_FUNC_ERROR; + return OPENVPN_PLUGIN_FUNC_SUCCESS; } - else - return OPENVPN_PLUGIN_FUNC_SUCCESS; } OPENVPN_EXPORT int -openvpn_plugin_func_v2 (openvpn_plugin_handle_t handle, - const int type, - const char *argv[], - const char *envp[], - void *per_client_context, - struct openvpn_plugin_string_list **return_list) +openvpn_plugin_func_v2(openvpn_plugin_handle_t handle, + const int type, + const char *argv[], + const char *envp[], + void *per_client_context, + struct openvpn_plugin_string_list **return_list) { - struct plugin_context *context = (struct plugin_context *) handle; - struct plugin_per_client_context *pcc = (struct plugin_per_client_context *) per_client_context; - switch (type) + struct plugin_context *context = (struct plugin_context *) handle; + struct plugin_per_client_context *pcc = (struct plugin_per_client_context *) per_client_context; + switch (type) { - case OPENVPN_PLUGIN_UP: - printf ("OPENVPN_PLUGIN_UP\n"); - return OPENVPN_PLUGIN_FUNC_SUCCESS; - case OPENVPN_PLUGIN_DOWN: - printf ("OPENVPN_PLUGIN_DOWN\n"); - return OPENVPN_PLUGIN_FUNC_SUCCESS; - case OPENVPN_PLUGIN_ROUTE_UP: - printf ("OPENVPN_PLUGIN_ROUTE_UP\n"); - return OPENVPN_PLUGIN_FUNC_SUCCESS; - case OPENVPN_PLUGIN_IPCHANGE: - printf ("OPENVPN_PLUGIN_IPCHANGE\n"); - return OPENVPN_PLUGIN_FUNC_SUCCESS; - case OPENVPN_PLUGIN_TLS_VERIFY: - printf ("OPENVPN_PLUGIN_TLS_VERIFY\n"); - return OPENVPN_PLUGIN_FUNC_SUCCESS; - case OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY: - printf ("OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY\n"); - return auth_user_pass_verify (context, pcc, argv, envp); - case OPENVPN_PLUGIN_CLIENT_CONNECT_V2: - printf ("OPENVPN_PLUGIN_CLIENT_CONNECT_V2\n"); - return OPENVPN_PLUGIN_FUNC_SUCCESS; - case OPENVPN_PLUGIN_CLIENT_DISCONNECT: - printf ("OPENVPN_PLUGIN_CLIENT_DISCONNECT\n"); - return OPENVPN_PLUGIN_FUNC_SUCCESS; - case OPENVPN_PLUGIN_LEARN_ADDRESS: - printf ("OPENVPN_PLUGIN_LEARN_ADDRESS\n"); - return OPENVPN_PLUGIN_FUNC_SUCCESS; - case OPENVPN_PLUGIN_TLS_FINAL: - printf ("OPENVPN_PLUGIN_TLS_FINAL\n"); - return tls_final (context, pcc, argv, envp); - case OPENVPN_PLUGIN_ENABLE_PF: - printf ("OPENVPN_PLUGIN_ENABLE_PF\n"); - if (context->test_packet_filter) - return OPENVPN_PLUGIN_FUNC_SUCCESS; - else - return OPENVPN_PLUGIN_FUNC_ERROR; - default: - printf ("OPENVPN_PLUGIN_?\n"); - return OPENVPN_PLUGIN_FUNC_ERROR; + case OPENVPN_PLUGIN_UP: + printf("OPENVPN_PLUGIN_UP\n"); + return OPENVPN_PLUGIN_FUNC_SUCCESS; + + case OPENVPN_PLUGIN_DOWN: + printf("OPENVPN_PLUGIN_DOWN\n"); + return OPENVPN_PLUGIN_FUNC_SUCCESS; + + case OPENVPN_PLUGIN_ROUTE_UP: + printf("OPENVPN_PLUGIN_ROUTE_UP\n"); + return OPENVPN_PLUGIN_FUNC_SUCCESS; + + case OPENVPN_PLUGIN_IPCHANGE: + printf("OPENVPN_PLUGIN_IPCHANGE\n"); + return OPENVPN_PLUGIN_FUNC_SUCCESS; + + case OPENVPN_PLUGIN_TLS_VERIFY: + printf("OPENVPN_PLUGIN_TLS_VERIFY\n"); + return OPENVPN_PLUGIN_FUNC_SUCCESS; + + case OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY: + printf("OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY\n"); + return auth_user_pass_verify(context, pcc, argv, envp); + + case OPENVPN_PLUGIN_CLIENT_CONNECT_V2: + printf("OPENVPN_PLUGIN_CLIENT_CONNECT_V2\n"); + return OPENVPN_PLUGIN_FUNC_SUCCESS; + + case OPENVPN_PLUGIN_CLIENT_DISCONNECT: + printf("OPENVPN_PLUGIN_CLIENT_DISCONNECT\n"); + return OPENVPN_PLUGIN_FUNC_SUCCESS; + + case OPENVPN_PLUGIN_LEARN_ADDRESS: + printf("OPENVPN_PLUGIN_LEARN_ADDRESS\n"); + return OPENVPN_PLUGIN_FUNC_SUCCESS; + + case OPENVPN_PLUGIN_TLS_FINAL: + printf("OPENVPN_PLUGIN_TLS_FINAL\n"); + return tls_final(context, pcc, argv, envp); + + case OPENVPN_PLUGIN_ENABLE_PF: + printf("OPENVPN_PLUGIN_ENABLE_PF\n"); + if (context->test_packet_filter) + { + return OPENVPN_PLUGIN_FUNC_SUCCESS; + } + else + { + return OPENVPN_PLUGIN_FUNC_ERROR; + } + + default: + printf("OPENVPN_PLUGIN_?\n"); + return OPENVPN_PLUGIN_FUNC_ERROR; } } OPENVPN_EXPORT void * -openvpn_plugin_client_constructor_v1 (openvpn_plugin_handle_t handle) +openvpn_plugin_client_constructor_v1(openvpn_plugin_handle_t handle) { - printf ("FUNC: openvpn_plugin_client_constructor_v1\n"); - return calloc (1, sizeof (struct plugin_per_client_context)); + printf("FUNC: openvpn_plugin_client_constructor_v1\n"); + return calloc(1, sizeof(struct plugin_per_client_context)); } OPENVPN_EXPORT void -openvpn_plugin_client_destructor_v1 (openvpn_plugin_handle_t handle, void *per_client_context) +openvpn_plugin_client_destructor_v1(openvpn_plugin_handle_t handle, void *per_client_context) { - printf ("FUNC: openvpn_plugin_client_destructor_v1\n"); - free (per_client_context); + printf("FUNC: openvpn_plugin_client_destructor_v1\n"); + free(per_client_context); } OPENVPN_EXPORT void -openvpn_plugin_close_v1 (openvpn_plugin_handle_t handle) +openvpn_plugin_close_v1(openvpn_plugin_handle_t handle) { - struct plugin_context *context = (struct plugin_context *) handle; - printf ("FUNC: openvpn_plugin_close_v1\n"); - free (context); + struct plugin_context *context = (struct plugin_context *) handle; + printf("FUNC: openvpn_plugin_close_v1\n"); + free(context); } |