* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
- *
- * $Id: m_challenge.c 3161 2007-01-25 07:23:01Z nenolod $
*/
#include "stdinc.h"
#define CHALLENGE_SECRET_LENGTH 128 /* how long our challenge secret should be */
#ifndef HAVE_LIBCRYPTO
+
+static const char challenge_desc[] = "Does nothing as OpenSSL was not enabled.";
+
/* Maybe this should be an error or something?-davidt */
/* now it is -larne */
-static int challenge_load(void)
+static int challenge_load(void)
{
-#ifndef STATIC_MODULES
- sendto_realops_snomask(SNO_GENERAL, L_ALL,
+ sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
"Challenge module not loaded because OpenSSL is not available.");
ilog(L_MAIN, "Challenge module not loaded because OpenSSL is not available.");
return -1;
-#else
- return 0;
-#endif
}
-DECLARE_MODULE_AV1(challenge, challenge_load, NULL, NULL, NULL, NULL, "$Revision: 3161 $");
+DECLARE_MODULE_AV2(challenge, challenge_load, NULL, NULL, NULL, NULL, NULL, NULL, challenge_desc);
#else
-static int m_challenge(struct Client *, struct Client *, int, const char **);
+static const char challenge_desc[] =
+ "Provides the challenge-response facility used for becoming an IRC operator";
+
+static void m_challenge(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
/* We have openssl support, so include /CHALLENGE */
struct Message challenge_msgtab = {
- "CHALLENGE", 0, 0, 0, MFLG_SLOW,
+ "CHALLENGE", 0, 0, 0, 0,
{mg_unreg, {m_challenge, 2}, mg_ignore, mg_ignore, mg_ignore, {m_challenge, 2}}
};
mapi_clist_av1 challenge_clist[] = { &challenge_msgtab, NULL };
-DECLARE_MODULE_AV1(challenge, NULL, NULL, challenge_clist, NULL, NULL, "$Revision: 3161 $");
-static int generate_challenge(char **r_challenge, char **r_response, RSA * key);
+DECLARE_MODULE_AV2(challenge, NULL, NULL, challenge_clist, NULL, NULL, NULL, NULL, challenge_desc);
+
+static bool generate_challenge(char **r_challenge, char **r_response, RSA * key);
static void
cleanup_challenge(struct Client *target_p)
{
if(target_p->localClient == NULL)
return;
-
+
rb_free(target_p->localClient->challenge);
- rb_free(target_p->localClient->opername);
+ rb_free(target_p->user->opername);
target_p->localClient->challenge = NULL;
- target_p->localClient->opername = NULL;
+ target_p->user->opername = NULL;
target_p->localClient->chal_time = 0;
}
/*
* m_challenge - generate RSA challenge for wouldbe oper
- * parv[0] = sender prefix
* parv[1] = operator to challenge for, or +response
- *
*/
-static int
-m_challenge(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
+static void
+m_challenge(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
struct oper_conf *oper_p;
char *challenge = NULL; /* to placate gcc */
- char chal_line[CHALLENGE_WIDTH];
+ char chal_line[CHALLENGE_WIDTH];
unsigned char *b_response;
size_t cnt;
int len = 0;
+ if (ConfigFileEntry.oper_secure_only && !IsSecureClient(source_p))
+ {
+ sendto_one_notice(source_p, ":You must be using a secure connection to /CHALLENGE on this server");
+ if (ConfigFileEntry.failed_oper_notice)
+ {
+ sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
+ "Failed CHALLENGE attempt - missing secure connection by %s (%s@%s)",
+ source_p->name, source_p->username, source_p->host);
+ }
+ return;
+ }
+
/* if theyre an oper, reprint oper motd and ignore */
if(IsOper(source_p))
{
sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
send_oper_motd(source_p);
- return 0;
+ return;
}
if(*parv[1] == '+')
{
/* Ignore it if we aren't expecting this... -A1kmm */
if(!source_p->localClient->challenge)
- return 0;
+ return;
if((rb_current_time() - source_p->localClient->chal_time) > CHALLENGE_EXPIRES)
{
sendto_one(source_p, form_str(ERR_PASSWDMISMATCH), me.name, source_p->name);
ilog(L_FOPER, "EXPIRED CHALLENGE (%s) by (%s!%s@%s) (%s)",
- source_p->localClient->opername, source_p->name,
+ source_p->user->opername, source_p->name,
source_p->username, source_p->host, source_p->sockhost);
if(ConfigFileEntry.failed_oper_notice)
source_p->name, source_p->username,
source_p->host);
cleanup_challenge(source_p);
- return 0;
+ return;
}
- b_response = rb_base64_decode((const unsigned char *)++parv[1], strlen(parv[1]), &len);
+ parv[1]++;
+ b_response = rb_base64_decode((const unsigned char *)parv[1], strlen(parv[1]), &len);
if(len != SHA_DIGEST_LENGTH ||
memcmp(source_p->localClient->challenge, b_response, SHA_DIGEST_LENGTH))
{
sendto_one(source_p, form_str(ERR_PASSWDMISMATCH), me.name, source_p->name);
ilog(L_FOPER, "FAILED CHALLENGE (%s) by (%s!%s@%s) (%s)",
- source_p->localClient->opername, source_p->name,
+ source_p->user->opername, source_p->name,
source_p->username, source_p->host, source_p->sockhost);
if(ConfigFileEntry.failed_oper_notice)
rb_free(b_response);
cleanup_challenge(source_p);
- return 0;
+ return;
}
rb_free(b_response);
- oper_p = find_oper_conf(source_p->username, source_p->orighost,
- source_p->sockhost,
- source_p->localClient->opername);
+ oper_p = find_oper_conf(source_p->username, source_p->orighost,
+ source_p->sockhost,
+ source_p->user->opername);
if(oper_p == NULL)
{
- sendto_one(source_p, form_str(ERR_NOOPERHOST),
- me.name, source_p->name);
+ sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST));
ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s)",
- source_p->localClient->opername, source_p->name,
+ source_p->user->opername, source_p->name,
source_p->username, source_p->host,
source_p->sockhost);
"Failed CHALLENGE attempt - host mismatch by %s (%s@%s)",
source_p->name, source_p->username,
source_p->host);
- return 0;
+ cleanup_challenge(source_p);
+ return;
}
cleanup_challenge(source_p);
oper_up(source_p, oper_p);
ilog(L_OPERED, "OPER %s by %s!%s@%s (%s)",
- source_p->localClient->opername, source_p->name,
+ source_p->user->opername, source_p->name,
source_p->username, source_p->host, source_p->sockhost);
- return 0;
+ return;
}
cleanup_challenge(source_p);
- oper_p = find_oper_conf(source_p->username, source_p->orighost,
+ oper_p = find_oper_conf(source_p->username, source_p->orighost,
source_p->sockhost, parv[1]);
if(oper_p == NULL)
{
- sendto_one(source_p, form_str(ERR_NOOPERHOST), me.name, source_p->name);
+ sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST));
ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s)",
parv[1], source_p->name,
source_p->username, source_p->host, source_p->sockhost);
sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
"Failed CHALLENGE attempt - host mismatch by %s (%s@%s)",
source_p->name, source_p->username, source_p->host);
- return 0;
+ return;
}
if(!oper_p->rsa_pubkey)
{
sendto_one_notice(source_p, ":I'm sorry, PK authentication is not enabled for your oper{} block.");
- return 0;
+ return;
}
- if(IsOperConfNeedSSL(oper_p) && !IsSSLClient(source_p))
+ if(IsOperConfNeedSSL(oper_p) && !IsSecureClient(source_p))
{
- sendto_one(source_p, form_str(ERR_NOOPERHOST), me.name, source_p->name);
+ sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST));
ilog(L_FOPER, "FAILED CHALLENGE (%s) by (%s!%s@%s) (%s) -- requires SSL/TLS",
parv[1], source_p->name, source_p->username, source_p->host,
source_p->sockhost);
if(ConfigFileEntry.failed_oper_notice)
{
- sendto_realops_snomask(SNO_GENERAL, L_ALL,
+ sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
"Failed CHALLENGE attempt - missing SSL/TLS by %s (%s@%s)",
source_p->name, source_p->username, source_p->host);
}
- return 0;
+ return;
+ }
+
+ if (oper_p->certfp != NULL)
+ {
+ if (source_p->certfp == NULL || rb_strcasecmp(source_p->certfp, oper_p->certfp))
+ {
+ sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST));
+ ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s) -- client certificate fingerprint mismatch",
+ parv[1], source_p->name,
+ source_p->username, source_p->host, source_p->sockhost);
+
+ if(ConfigFileEntry.failed_oper_notice)
+ {
+ sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
+ "Failed OPER attempt - client certificate fingerprint mismatch by %s (%s@%s)",
+ source_p->name, source_p->username, source_p->host);
+ }
+ return;
+ }
}
- if(!generate_challenge(&challenge, &(source_p->localClient->challenge), oper_p->rsa_pubkey))
+ if(generate_challenge(&challenge, &(source_p->localClient->challenge), oper_p->rsa_pubkey))
{
char *chal = challenge;
source_p->localClient->chal_time = rb_current_time();
{
cnt = rb_strlcpy(chal_line, chal, CHALLENGE_WIDTH);
sendto_one(source_p, form_str(RPL_RSACHALLENGE2), me.name, source_p->name, chal_line);
- if(cnt > CHALLENGE_WIDTH)
+ if(cnt >= CHALLENGE_WIDTH)
chal += CHALLENGE_WIDTH - 1;
else
break;
-
+
}
- sendto_one(source_p, form_str(RPL_ENDOFRSACHALLENGE2),
+ sendto_one(source_p, form_str(RPL_ENDOFRSACHALLENGE2),
me.name, source_p->name);
rb_free(challenge);
- source_p->localClient->opername = rb_strdup(oper_p->name);
+ source_p->user->opername = rb_strdup(oper_p->name);
}
else
sendto_one_notice(source_p, ":Failed to generate challenge.");
-
- return 0;
}
-static int
+static bool
generate_challenge(char **r_challenge, char **r_response, RSA * rsa)
{
SHA_CTX ctx;
int ret;
if(!rsa)
- return -1;
+ return false;
if(rb_get_random(secret, CHALLENGE_SECRET_LENGTH))
{
SHA1_Init(&ctx);
SHA1_Update(&ctx, (uint8_t *)secret, CHALLENGE_SECRET_LENGTH);
- *r_response = malloc(SHA_DIGEST_LENGTH);
+ *r_response = rb_malloc(SHA_DIGEST_LENGTH);
SHA1_Final((uint8_t *)*r_response, &ctx);
length = RSA_size(rsa);
{
*r_challenge = (char *)rb_base64_encode(tmp, ret);
rb_free(tmp);
- return 0;
+ return true;
}
rb_free(tmp);
cnt++;
}
- return (-1);
+ return false;
}
#endif /* HAVE_LIBCRYPTO */
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