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See http://spamassassin.org/tag/ for more details. 0.0 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail domains are different 0.0 TIME_LIMIT_EXCEEDED Exceeded time limit / deadline X-Headers-End: 1gPRf7-008sMu-Va Subject: [Openvpn-devel] [PATCH v4 04/13] client-connect: Refactor to use return values instead of modifying a passed-in flag X-BeenThere: openvpn-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: openvpn-devel-bounces@lists.sourceforge.net X-getmail-retrieved-from-mailbox: Inbox From: Fabian Knittel This patch changes the way the client-connect helper functions communicate with the main function. Instead of updating cc_succeeded and cc_succeeded_count, they now return either CC_RET_SUCCEEDED, CC_RET_FAILED or CC_RET_SKIPPED. In addition, the client-connect helpers are now called in completely identical ways. This is in preparation of handling the helpers as simple call-backs. Signed-off-by: Fabian Knittel Signed-off-by: Arne Schwabe --- src/openvpn/multi.c | 126 +++++++++++++++++++++++++++----------------- src/openvpn/multi.h | 10 ++++ 2 files changed, 87 insertions(+), 49 deletions(-) diff --git a/src/openvpn/multi.c b/src/openvpn/multi.c index bc9fddce..4182b553 100644 --- a/src/openvpn/multi.c +++ b/src/openvpn/multi.c @@ -1706,20 +1706,21 @@ multi_client_connect_post_plugin(struct multi_context *m, #endif /* ifdef ENABLE_PLUGIN */ -#ifdef MANAGEMENT_DEF_AUTH + /* * Called to load management-derived client-connect config */ -static void +enum client_connect_return multi_client_connect_mda(struct multi_context *m, struct multi_instance *mi, unsigned int *option_types_found) { + enum client_connect_return ret = CC_RET_SKIPPED; +#ifdef MANAGEMENT_DEF_AUTH if (mi->cc_config) { struct buffer_entry *be; - for (be = mi->cc_config->head; be != NULL; be = be->next) { const char *opt = BSTR(&be->buf); @@ -1739,10 +1740,12 @@ multi_client_connect_mda(struct multi_context *m, */ multi_select_virtual_addr(m, mi); multi_set_virtual_addr_env(m, mi); - } -} + ret = CC_RET_SUCCEEDED; + } #endif /* ifdef MANAGEMENT_DEF_AUTH */ + return ret; +} static void multi_client_connect_setenv(struct multi_context *m, @@ -1769,19 +1772,16 @@ multi_client_connect_setenv(struct multi_context *m, gc_free(&gc); } -static void +static enum client_connect_return multi_client_connect_call_plugin_v1(struct multi_context *m, struct multi_instance *mi, - unsigned int *option_types_found, - int *cc_succeeded, - int *cc_succeeded_count) + unsigned int *option_types_found) { + enum client_connect_return ret = CC_RET_SKIPPED; #ifdef ENABLE_PLUGIN ASSERT(m); ASSERT(mi); ASSERT(option_types_found); - ASSERT(cc_succeeded); - ASSERT(cc_succeeded_count); /* deprecated callback, use a file for passing back return info */ if (plugin_defined(mi->context.plugins, OPENVPN_PLUGIN_CLIENT_CONNECT)) @@ -1793,7 +1793,7 @@ multi_client_connect_call_plugin_v1(struct multi_context *m, if (!dc_file) { - cc_succeeded = false; + ret = CC_RET_FAILED; goto cleanup; } @@ -1803,12 +1803,12 @@ multi_client_connect_call_plugin_v1(struct multi_context *m, != OPENVPN_PLUGIN_FUNC_SUCCESS) { msg(M_WARN, "WARNING: client-connect plugin call failed"); - *cc_succeeded = false; + ret = CC_RET_FAILED; } else { multi_client_connect_post(m, mi, dc_file, option_types_found); - (*cc_succeeded_count)++; + ret = CC_RET_SUCCEEDED; } { @@ -1821,21 +1821,19 @@ cleanup: gc_free(&gc); } #endif /* ifdef ENABLE_PLUGIN */ + return ret; } -static void +static enum client_connect_return multi_client_connect_call_plugin_v2(struct multi_context *m, struct multi_instance *mi, - unsigned int *option_types_found, - int *cc_succeeded, - int *cc_succeeded_count) + unsigned int *option_types_found) { + enum client_connect_return ret = CC_RET_SKIPPED; #ifdef ENABLE_PLUGIN ASSERT(m); ASSERT(mi); ASSERT(option_types_found); - ASSERT(cc_succeeded); - ASSERT(cc_succeeded_count); /* V2 callback, use a plugin_return struct for passing back return info */ if (plugin_defined(mi->context.plugins, OPENVPN_PLUGIN_CLIENT_CONNECT_V2)) @@ -1849,17 +1847,18 @@ multi_client_connect_call_plugin_v2(struct multi_context *m, != OPENVPN_PLUGIN_FUNC_SUCCESS) { msg(M_WARN, "WARNING: client-connect-v2 plugin call failed"); - *cc_succeeded = false; + ret = CC_RET_FAILED; } else { multi_client_connect_post_plugin(m, mi, &pr, option_types_found); - (*cc_succeeded_count)++; + ret = CC_RET_SUCCEEDED; } plugin_return_free(&pr); } #endif /* ifdef ENABLE_PLUGIN */ + return ret; } @@ -1867,13 +1866,12 @@ multi_client_connect_call_plugin_v2(struct multi_context *m, /** * Runs the --client-connect script if one is defined. */ -static void +static enum client_connect_return multi_client_connect_call_script(struct multi_context *m, struct multi_instance *mi, - unsigned int *option_types_found, - int *cc_succeeded, - int *cc_succeeded_count) + unsigned int *option_types_found) { + enum client_connect_return ret = CC_RET_SKIPPED; if (mi->context.options.client_connect_script) { struct argv argv = argv_new(); @@ -1886,7 +1884,7 @@ multi_client_connect_call_script(struct multi_context *m, "cc", &gc); if (!dc_file) { - *cc_succeeded = false; + ret = CC_RET_FAILED; goto cleanup; } @@ -1896,11 +1894,11 @@ multi_client_connect_call_script(struct multi_context *m, if (openvpn_run_script(&argv, mi->context.c2.es, 0, "--client-connect")) { multi_client_connect_post(m, mi, dc_file, option_types_found); - (*cc_succeeded_count)++; + ret = CC_RET_SUCCEEDED; } else { - *cc_succeeded = false; + ret = CC_RET_FAILED; } if (!platform_unlink(dc_file)) @@ -1912,6 +1910,7 @@ cleanup: argv_reset(&argv); gc_free(&gc); } + return ret; } static void @@ -2046,18 +2045,18 @@ multi_client_connect_early_setup(struct multi_context *m, multi_select_virtual_addr(m, mi); multi_client_connect_setenv(m, mi); - } /** * Try to source a dynamic config file from the * --client-config-dir directory. */ -static void +enum client_connect_return multi_client_connect_source_ccd(struct multi_context *m, struct multi_instance *mi, unsigned int *option_types_found) { + enum client_connect_return ret = CC_RET_SKIPPED; if (mi->context.options.client_config_dir) { struct gc_arena gc = gc_new(); @@ -2099,9 +2098,35 @@ multi_client_connect_source_ccd(struct multi_context *m, multi_select_virtual_addr(m, mi); multi_client_connect_setenv(m, mi); + + ret = CC_RET_SUCCEEDED; } gc_free(&gc); } + return ret; +} + +static inline bool +cc_check_return(int *cc_succeeded_count, + enum client_connect_return ret) +{ + if (ret == CC_RET_SUCCEEDED) + { + (*cc_succeeded_count)++; + return true; + } + else if (ret == CC_RET_FAILED) + { + return false; + } + else if (ret == CC_RET_SKIPPED) + { + return true; + } + else + { + ASSERT(0); + } } /* @@ -2123,38 +2148,41 @@ multi_connection_established(struct multi_context *m, struct multi_instance *mi) int cc_succeeded = true; /* client connect script status */ int cc_succeeded_count = 0; + enum client_connect_return ret; multi_client_connect_early_setup(m, mi); - multi_client_connect_source_ccd(m, mi, &option_types_found); - - multi_client_connect_call_plugin_v1(m, mi, &option_types_found, - &cc_succeeded, - &cc_succeeded_count); + ret = multi_client_connect_source_ccd(m, mi, &option_types_found); + cc_succeeded = cc_check_return(&cc_succeeded_count, ret); + if (cc_succeeded) + { + ret = multi_client_connect_call_plugin_v1(m, mi, + &option_types_found); + cc_succeeded = cc_check_return(&cc_succeeded_count, ret); + } - multi_client_connect_call_plugin_v2(m, mi, &option_types_found, - &cc_succeeded, - &cc_succeeded_count); + if (cc_succeeded) + { + ret = multi_client_connect_call_plugin_v2(m, mi, + &option_types_found); + cc_succeeded = cc_check_return(&cc_succeeded_count, ret); + } /* * Check for client-connect script left by management interface client */ - if (cc_succeeded) { - multi_client_connect_call_script(m, mi, &option_types_found, - &cc_succeeded, - &cc_succeeded_count); - + ret = multi_client_connect_call_script(m, mi, &option_types_found); + cc_succeeded = cc_check_return(&cc_succeeded_count, ret); } -#ifdef MANAGEMENT_DEF_AUTH - if (cc_succeeded && mi->cc_config) + + if (cc_succeeded) { - multi_client_connect_mda(m, mi, &option_types_found); - cc_succeeded_count++; + ret = multi_client_connect_mda(m, mi, &option_types_found); + cc_succeeded = cc_check_return(&cc_succeeded_count, ret); } -#endif /* * Check for "disable" directive in client-config-dir file diff --git a/src/openvpn/multi.h b/src/openvpn/multi.h index 489c073a..0a1ab2c3 100644 --- a/src/openvpn/multi.h +++ b/src/openvpn/multi.h @@ -191,6 +191,16 @@ struct multi_context { struct deferred_signal_schedule_entry deferred_shutdown_signal; }; +/** + * Return values used by the client connect call-back functions. + */ +enum client_connect_return +{ + CC_RET_FAILED, + CC_RET_SUCCEEDED, + CC_RET_SKIPPED +}; + /* * Host route */