1 /* Copyright 2010, 2011 NORDUnet A/S. All rights reserved.
2 See the file COPYING for licensing information. */
4 #if defined HAVE_CONFIG_H
11 #include <radsec/radsec.h>
12 #include <radsec/radsec-impl.h>
18 # common config options
21 # common realm config options
23 type = "UDP"|"TCP"|"TLS"|"DTLS"
30 pskstr = STRING # Transport pre-shared key, UTF-8 form.
31 pskhexstr = STRING # Transport pre-shared key, ASCII hex form.
33 pskex = "PSK"|"DHE_PSK"|"RSA_PSK"
36 # client specific realm config options
41 secret = STRING # RADIUS secret
46 /* FIXME: Leaking memory in error cases. */
48 rs_context_read_config(struct rs_context *ctx, const char *config_file)
50 cfg_t *cfg, *cfg_realm, *cfg_server;
54 struct rs_config *config = NULL;
56 cfg_opt_t server_opts[] =
58 CFG_STR ("hostname", NULL, CFGF_NONE),
59 CFG_STR ("service", "2083", CFGF_NONE),
60 CFG_STR ("secret", "radsec", CFGF_NONE),
63 cfg_opt_t realm_opts[] =
65 CFG_STR ("type", "UDP", CFGF_NONE),
66 CFG_INT ("timeout", 2, CFGF_NONE), /* FIXME: Remove? */
67 CFG_INT ("retries", 2, CFGF_NONE), /* FIXME: Remove? */
68 CFG_STR ("cacertfile", NULL, CFGF_NONE),
69 /*CFG_STR ("cacertpath", NULL, CFGF_NONE),*/
70 CFG_STR ("certfile", NULL, CFGF_NONE),
71 CFG_STR ("certkeyfile", NULL, CFGF_NONE),
72 CFG_STR ("pskstr", NULL, CFGF_NONE),
73 CFG_STR ("pskhexstr", NULL, CFGF_NONE),
74 CFG_STR ("pskid", NULL, CFGF_NONE),
75 CFG_STR ("pskex", "PSK", CFGF_NONE),
76 CFG_SEC ("server", server_opts, CFGF_MULTI),
81 CFG_STR ("dictionary", NULL, CFGF_NONE),
82 CFG_SEC ("realm", realm_opts, CFGF_TITLE | CFGF_MULTI),
86 cfg = cfg_init (opts, CFGF_NONE);
88 return rs_err_ctx_push (ctx, RSE_CONFIG, "unable to initialize libconfuse");
89 err = cfg_parse (cfg, config_file);
95 return rs_err_ctx_push (ctx, RSE_CONFIG,
96 "%s: unable to open configuration file",
99 return rs_err_ctx_push (ctx, RSE_CONFIG, "%s: invalid configuration file",
102 return rs_err_ctx_push (ctx, RSE_CONFIG, "%s: unknown parse error",
106 config = rs_calloc (ctx, 1, sizeof (*config));
108 return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__, NULL);
109 ctx->config = config;
110 config->dictionary = cfg_getstr (cfg, "dictionary");
112 for (i = 0; i < cfg_size (cfg, "realm"); i++)
114 struct rs_realm *r = NULL;
116 char *pskstr = NULL, *pskhexstr = NULL;
118 r = rs_calloc (ctx, 1, sizeof(*r));
120 return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__, NULL);
121 if (config->realms != NULL)
123 r->next = config->realms->next;
124 config->realms->next = r;
130 cfg_realm = cfg_getnsec (cfg, "realm", i);
131 s = cfg_title (cfg_realm);
133 return rs_err_ctx_push_fl (ctx, RSE_CONFIG, __FILE__, __LINE__,
134 "missing realm name");
135 /* We use a copy of the return value of cfg_title() since it's const. */
136 r->name = rs_strdup (ctx, s);
140 typestr = cfg_getstr (cfg_realm, "type");
141 if (strcmp (typestr, "UDP") == 0)
142 r->type = RS_CONN_TYPE_UDP;
143 else if (strcmp (typestr, "TCP") == 0)
144 r->type = RS_CONN_TYPE_TCP;
145 else if (strcmp (typestr, "TLS") == 0)
146 r->type = RS_CONN_TYPE_TLS;
147 else if (strcmp (typestr, "DTLS") == 0)
148 r->type = RS_CONN_TYPE_DTLS;
150 return rs_err_ctx_push (ctx, RSE_CONFIG,
151 "%s: invalid connection type: %s",
153 r->timeout = cfg_getint (cfg_realm, "timeout");
154 r->retries = cfg_getint (cfg_realm, "retries");
156 r->cacertfile = cfg_getstr (cfg_realm, "cacertfile");
157 /*r->cacertpath = cfg_getstr (cfg_realm, "cacertpath");*/
158 r->certfile = cfg_getstr (cfg_realm, "certfile");
159 r->certkeyfile = cfg_getstr (cfg_realm, "certkeyfile");
161 pskstr = cfg_getstr (cfg_realm, "pskstr");
162 pskhexstr = cfg_getstr (cfg_realm, "pskhexstr");
163 if (pskstr || pskhexstr)
165 #if defined RS_ENABLE_TLS_PSK
166 char *kex = cfg_getstr (cfg_realm, "pskex");
167 rs_cred_type_t type = RS_CRED_NONE;
168 struct rs_credentials *cred = NULL;
169 assert (kex != NULL);
171 if (!strcmp (kex, "PSK"))
172 type = RS_CRED_TLS_PSK;
175 /* TODO: push a warning on the error stack:*/
176 /*rs_err_ctx_push (ctx, RSE_WARN, "%s: unsupported PSK key exchange"
177 " algorithm -- PSK not used", kex);*/
180 if (type != RS_CRED_NONE)
182 cred = rs_calloc (ctx, 1, sizeof (*cred));
184 return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__,
187 cred->identity = cfg_getstr (cfg_realm, "pskid");
190 cred->secret_encoding = RS_KEY_ENCODING_ASCII_HEX;
191 cred->secret = pskhexstr;
193 ; /* TODO: warn that we're ignoring pskstr */
197 cred->secret_encoding = RS_KEY_ENCODING_UTF8;
198 cred->secret = pskstr;
201 r->transport_cred = cred;
203 #else /* !RS_ENABLE_TLS_PSK */
204 /* TODO: push a warning on the error stack: */
205 /* rs_err_ctx_push (ctx, RSE_WARN, "libradsec wasn't configured with "
206 "support for TLS preshared keys, ignoring pskstr "
208 #endif /* RS_ENABLE_TLS_PSK */
211 /* For TLS and DTLS realms, validate that we either have (i) CA
212 cert file or path or (ii) PSK. */
213 if ((r->type == RS_CONN_TYPE_TLS || r->type == RS_CONN_TYPE_DTLS)
214 && (r->cacertfile == NULL && r->cacertpath == NULL)
215 && r->transport_cred == NULL)
216 return rs_err_ctx_push (ctx, RSE_CONFIG,
217 "%s: missing both CA file/path and PSK",
220 /* Add peers, one per server stanza. */
221 for (j = 0; j < cfg_size (cfg_realm, "server"); j++)
223 struct rs_peer *p = peer_create (ctx, &r->peers);
225 return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__,
229 cfg_server = cfg_getnsec (cfg_realm, "server", j);
230 p->hostname = cfg_getstr (cfg_server, "hostname");
231 p->service = cfg_getstr (cfg_server, "service");
232 p->secret = cfg_getstr (cfg_server, "secret");
236 /* Save config object in context, for freeing in rs_context_destroy(). */
237 ctx->config->cfg = cfg;
243 rs_conf_find_realm(struct rs_context *ctx, const char *name)
247 for (r = ctx->config->realms; r; r = r->next)
248 if (strcmp (r->name, name) == 0)