diff options
Diffstat (limited to 'src/libimcv/imcv.c')
| -rw-r--r-- | src/libimcv/imcv.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/libimcv/imcv.c b/src/libimcv/imcv.c new file mode 100644 index 000000000..a8c0af47b --- /dev/null +++ b/src/libimcv/imcv.c @@ -0,0 +1,161 @@ +/* + * Copyright (C) 2011 Andreas Steffen, HSR Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "imcv.h" +#include "ietf/ietf_attr.h" +#include "ita/ita_attr.h" + +#include <utils.h> +#include <debug.h> +#include <pen/pen.h> + +#include <syslog.h> + +#define IMCV_DEBUG_LEVEL 1 + +/** + * PA-TNC attribute manager + */ +pa_tnc_attr_manager_t *imcv_pa_tnc_attributes; + +/** + * Reference count for libimcv + */ +static refcount_t libimcv_ref = 0; + +/** + * Reference count for libstrongswan + */ +static refcount_t libstrongswan_ref = 0; + +/** + * Global configuration of imcv dbg function + */ +static int imcv_debug_level; +static bool imcv_stderr_quiet; + +/** + * imvc dbg function + */ +static void imcv_dbg(debug_t group, level_t level, char *fmt, ...) +{ + int priority = LOG_INFO; + char buffer[8192]; + char *current = buffer, *next; + va_list args; + + if (level <= imcv_debug_level) + { + if (!imcv_stderr_quiet) + { + va_start(args, fmt); + fprintf(stderr, "[HSR] "); + vfprintf(stderr, fmt, args); + fprintf(stderr, "\n"); + va_end(args); + } + + /* write in memory buffer first */ + va_start(args, fmt); + vsnprintf(buffer, sizeof(buffer), fmt, args); + va_end(args); + + /* do a syslog with every line */ + while (current) + { + next = strchr(current, '\n'); + if (next) + { + *(next++) = '\0'; + } + syslog(priority, "[HSR] %s\n", current); + current = next; + } + } +} + +/** + * Described in header. + */ +bool libimcv_init(void) +{ + /* initialize libstrongswan library only once */ + if (lib) + { + /* did main program initialize libstrongswan? */ + if (libstrongswan_ref == 0) + { + ref_get(&libstrongswan_ref); + } + } + else + { + /* we are the first to initialize libstrongswan */ + if (!library_init(NULL)) + { + return FALSE; + } + + if (!lib->plugins->load(lib->plugins, NULL, + "sha1 sha2 random gmp pubkey x509")) + { + library_deinit(); + return FALSE; + } + + /* set the debug level and stderr output */ + imcv_debug_level = lib->settings->get_int(lib->settings, + "libimcv.debug_level", IMCV_DEBUG_LEVEL); + imcv_stderr_quiet = lib->settings->get_int(lib->settings, + "libimcv.stderr_quiet", FALSE); + + /* activate the imcv debugging hook */ + dbg = imcv_dbg; + openlog("imcv", 0, LOG_DAEMON); + } + ref_get(&libstrongswan_ref); + + if (libimcv_ref == 0) + { + /* initialize the PA-TNC attribute manager */ + imcv_pa_tnc_attributes = pa_tnc_attr_manager_create(); + imcv_pa_tnc_attributes->add_vendor(imcv_pa_tnc_attributes, PEN_IETF, + ietf_attr_create_from_data, ietf_attr_names); + imcv_pa_tnc_attributes->add_vendor(imcv_pa_tnc_attributes, PEN_ITA, + ita_attr_create_from_data, ita_attr_names); + DBG1(DBG_LIB, "libimcv initialized"); + } + ref_get(&libimcv_ref); + + return TRUE; +} + +/** + * Described in header. + */ +void libimcv_deinit(void) +{ + if (ref_put(&libimcv_ref)) + { + imcv_pa_tnc_attributes->remove_vendor(imcv_pa_tnc_attributes, PEN_IETF); + imcv_pa_tnc_attributes->remove_vendor(imcv_pa_tnc_attributes, PEN_ITA); + DESTROY_IF(imcv_pa_tnc_attributes); + DBG1(DBG_LIB, "libimcv terminated"); + } + if (ref_put(&libstrongswan_ref)) + { + library_deinit(); + } +} + |