C++ pairfree函数代码示例

//.........这里部分代码省略.........
	}

	/*
	 *	The MS-Length field is 5 + value_size + length
	 *	of name, which is put after the response.
	 */
	if (((eap_ds->response->type.data[2] << 8) |
	     eap_ds->response->type.data[3]) < (5 + 49)) {
		radlog(L_ERR, "rlm_eap_mschapv2: Response contains contradictory length %d %d",
		      (eap_ds->response->type.data[2] << 8) |
		       eap_ds->response->type.data[3], 5 + 49);
		return 0;
	}

	/*
	 *	We now know that the user has sent us a response
	 *	to the challenge.  Let's try to authenticate it.
	 *
	 *	We do this by taking the challenge from 'data',
	 *	the response from the EAP packet, and creating VALUE_PAIR's
	 *	to pass to the 'mschap' module.  This is a little wonky,
	 *	but it works.
	 */
	challenge = pairmake("MS-CHAP-Challenge", "0x00", T_OP_EQ);
	if (!challenge) {
		radlog(L_ERR, "rlm_eap_mschapv2: out of memory");
		return 0;
	}
	challenge->length = MSCHAPV2_CHALLENGE_LEN;
	memcpy(challenge->vp_strvalue, data->challenge, MSCHAPV2_CHALLENGE_LEN);

	response = pairmake("MS-CHAP2-Response", "0x00", T_OP_EQ);
	if (!response) {
		pairfree(&challenge);
		radlog(L_ERR, "rlm_eap_mschapv2: out of memory");
		return 0;
	}

	response->length = MSCHAPV2_RESPONSE_LEN;
	memcpy(response->vp_strvalue + 2, &eap_ds->response->type.data[5],
	       MSCHAPV2_RESPONSE_LEN - 2);
	response->vp_strvalue[0] = eap_ds->response->type.data[1];
	response->vp_strvalue[1] = eap_ds->response->type.data[5 + MSCHAPV2_RESPONSE_LEN];

	name = pairmake("NTLM-User-Name", "", T_OP_EQ);
	if (!name) {
		pairfree(&challenge);
		pairfree(&response);
		radlog(L_ERR, "rlm_eap_mschapv2: Failed creating NTLM-User-Name: %s", fr_strerror());
		return 0;
	}
	
	/*
	 *	MS-Length - MS-Value - 5.
	 */
	name->length = (((eap_ds->response->type.data[2] << 8) |
                         eap_ds->response->type.data[3]) -
			eap_ds->response->type.data[4] - 5);
	if (name->length >= sizeof(name->vp_strvalue)) {
		name->length = sizeof(name->vp_strvalue) - 1;
	}

	memcpy(name->vp_strvalue,
	       &eap_ds->response->type.data[4 + MSCHAPV2_RESPONSE_LEN],
	       name->length);
	name->vp_strvalue[name->length] = '\0';

//.........这里部分代码省略.........
		 *  Now get the reply pairs since the paircompare matched
		 */
		if (!radius_xlat(querystr, sizeof(querystr), inst->config->authorize_reply_query, request, sql_escape_func, inst)) {
			radlog_request(L_ERR, 0, request, "Error generating query; rejecting user");
			
			goto error;
		}
		
		rows = sql_getvpdata(inst, &handle, &reply_tmp, querystr);
		if (rows < 0) {
			radlog_request(L_ERR, 0, request, "SQL query error; rejecting user");

			goto error;
		}
		
		if (rows > 0) {
			if (!inst->config->read_groups) {
				dofallthrough = fallthrough(reply_tmp);
			}
			
			RDEBUG2("User found in radreply table");
			
			radius_xlat_move(request, &request->reply->vps, &reply_tmp);
			
			ret = RLM_MODULE_OK;
		}
	}
	
	skipreply:

	/*
	 *  Clear out the pairlists
	 */
	pairfree(&check_tmp);
	pairfree(&reply_tmp);

	/*
	 *  dofallthrough is set to 1 by default so that if the user information
	 *  is not found, we will still process groups.  If the user information,
	 *  however, *is* found, Fall-Through must be set in order to process
	 *  the groups as well.
	 */
	if (dofallthrough) {
		rows = rlm_sql_process_groups(inst, request, handle, &dofallthrough);
		if (rows < 0) {
			radlog_request(L_ERR, 0, request, "Error processing groups; rejecting user");

			goto error;
		}
		
		if (rows > 0)
			ret = RLM_MODULE_OK;
	}

	/*
	 *  Repeat the above process with the default profile or User-Profile
	 */
	if (dofallthrough) {
		/*
	 	 *  Check for a default_profile or for a User-Profile.
		 */
		user_profile = pairfind(request->config_items, PW_USER_PROFILE, 0, TAG_ANY);
		
		const char *profile = user_profile ?
				      user_profile->vp_strvalue :
				      inst->config->default_profile;

//.........这里部分代码省略.........
		 *	User authenticated O.K. Now we have to check
		 *	for the Simultaneous-Use parameter.
		 */
		if (namepair &&
		    (r = module_checksimul(session_type, request, check_item->vp_integer)) != 0) {
			char mpp_ok = 0;

			if (r == 2){
				/* Multilink attempt. Check if port-limit > simultaneous-use */
				VALUE_PAIR *port_limit;

				if ((port_limit = pairfind(request->reply->vps, PW_PORT_LIMIT, 0)) != NULL &&
					port_limit->vp_integer > check_item->vp_integer){
					RDEBUG2("MPP is OK");
					mpp_ok = 1;
				}
			}
			if (!mpp_ok){
				if (check_item->vp_integer > 1) {
		  		snprintf(umsg, sizeof(umsg),
							"\r\nYou are already logged in %d times  - access denied\r\n\n",
							(int)check_item->vp_integer);
					user_msg = umsg;
				} else {
					user_msg = "\r\nYou are already logged in - access denied\r\n\n";
				}

				request->reply->code = PW_AUTHENTICATION_REJECT;

				/*
				 *	They're trying to log in too many times.
				 *	Remove ALL reply attributes.
				 */
				pairfree(&request->reply->vps);
				radius_pairmake(request, &request->reply->vps,
						"Reply-Message",
						user_msg, T_OP_SET);

				snprintf(logstr, sizeof(logstr), "Multiple logins (max %d) %s",
					check_item->vp_integer,
					r == 2 ? "[MPP attempt]" : "");
				rad_authlog(logstr, request, 1);

				result = -1;
			}
		}
	}
#endif

	/*
	 *	Result should be >= 0 here - if not, it means the user
	 *	is rejected, so we just process post-auth and return.
	 */
	if (result < 0) {
		return RLM_MODULE_REJECT;
	}

	/*
	 *	Add the port number to the Framed-IP-Address if
	 *	vp->addport is set.
	 */
	if (((tmp = pairfind(request->reply->vps,
			     PW_FRAMED_IP_ADDRESS, 0)) != NULL) &&
	    (tmp->flags.addport != 0)) {
		VALUE_PAIR *vpPortId;

/** Execute a program.
 *
 * @param cmd Command to execute. This is parsed into argv[] parts,
 * 	then each individual argv part is xlat'ed.
 * @param request current request.
 * @param exec_wait set to 1 if you want to read from or write to child
 * @param user_msg buffer to append plaintext (non valuepair) output.
 * @param msg_len length of user_msg buffer.
 * @param input_pairs list of value pairs - these will be put into
 * 	the environment variables of the child.
 * @param[out] output_pairs list of value pairs - child stdout will be
 * 	parsed and added into this list of value pairs.
 * @param shell_escape
 * @return 0 if exec_wait==0, exit code if exec_wait!=0, -1 on error.
 */
int radius_exec_program(const char *cmd, REQUEST *request,
			int exec_wait,
			char *user_msg, int msg_len,
			VALUE_PAIR *input_pairs,
			VALUE_PAIR **output_pairs,
			int shell_escape)
{
	pid_t pid;
	int from_child;
#ifndef __MINGW32__
	VALUE_PAIR *vp;
	char *p;
	pid_t child_pid;
	int comma = 0;
	int status;
	int n, done;
	char answer[4096];
#endif

	pid = radius_start_program(cmd, request, exec_wait, NULL, &from_child, input_pairs, shell_escape);
	if (pid < 0) {
		return -1;
	}

	if (!exec_wait)
		return 0;

#ifndef __MINGW32__
	done = radius_readfrom_program(from_child, pid, 10, answer, sizeof(answer));
	if (done < 0) {
		/*
		 * failure - radius_readfrom_program will
		 * have called close(from_child) for us
		 */
		DEBUG("failed to read from child output");
		return 1;

	}
	answer[done] = 0;


	/*
	 *	Make sure that the writer can't block while writing to
	 *	a pipe that no one is reading from anymore.
	 */
	close(from_child);

	DEBUG2("Exec-Program output: %s", answer);

	/*
	 *	Parse the output, if any.
	 */
	if (done) {
		n = T_OP_INVALID;
		if (output_pairs) {
			/*
			 *	For backwards compatibility, first check
			 *	for plain text (user_msg).
			 */
			vp = NULL;
			n = userparse(answer, &vp);
			if (vp) {
				pairfree(&vp);
			}
		}

		if (n == T_OP_INVALID) {
			DEBUG("Exec-Program-Wait: plaintext: %s", answer);
			if (user_msg) {
				strlcpy(user_msg, answer, msg_len);
			}
		} else {
			/*
			 *	HACK: Replace '\n' with ',' so that
			 *	userparse() can parse the buffer in
			 *	one go (the proper way would be to
			 *	fix userparse(), but oh well).
			 */
			for (p = answer; *p; p++) {
				if (*p == '\n') {
					*p = comma ? ' ' : ',';
					p++;
					comma = 0;
				}
				if (*p == ',') comma++;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	rad_request_proxy_reply_hv = get_hv("RAD_REQUEST_PROXY_REPLY",1);
#endif

	perl_store_vps(request->reply->vps, rad_reply_hv);
	perl_store_vps(request->config_items, rad_check_hv);
	perl_store_vps(request->packet->vps, rad_request_hv);
	perl_store_vps(request->config_items, rad_config_hv);

#ifdef WITH_PROXY
	if (request->proxy != NULL) {
		perl_store_vps(request->proxy->vps, rad_request_proxy_hv);
	} else {
		hv_undef(rad_request_proxy_hv);
	}

	if (request->proxy_reply !=NULL) {
		perl_store_vps(request->proxy_reply->vps, rad_request_proxy_reply_hv);
	} else {
		hv_undef(rad_request_proxy_reply_hv);
	}
#endif

	PUSHMARK(SP);
	/*
	* This way %RAD_xx can be pushed onto stack as sub parameters.
	* XPUSHs( newRV_noinc((SV *)rad_request_hv) );
	* XPUSHs( newRV_noinc((SV *)rad_reply_hv) );
	* XPUSHs( newRV_noinc((SV *)rad_check_hv) );
	* PUTBACK;
	*/

	count = call_pv(function_name, G_SCALAR | G_EVAL | G_NOARGS);

	SPAGAIN;

	if (SvTRUE(ERRSV)) {
		radlog(L_ERR, "rlm_perl: perl_embed:: module = %s , func = %s exit status= %s\n",
		       inst->module,
		       function_name, SvPV(ERRSV,n_a));
		(void)POPs;
	}

	if (count == 1) {
		exitstatus = POPi;
		if (exitstatus >= 100 || exitstatus < 0) {
			exitstatus = RLM_MODULE_FAIL;
		}
	}


	PUTBACK;
	FREETMPS;
	LEAVE;

	vp = NULL;
	if ((get_hv_content(rad_request_hv, &vp)) > 0 ) {
		pairfree(&request->packet->vps);
		request->packet->vps = vp;
		vp = NULL;

		/*
		 *	Update cached copies
		 */
		request->username = pairfind(request->packet->vps, PW_USER_NAME, 0, TAG_ANY);
		request->password = pairfind(request->packet->vps, PW_USER_PASSWORD, 0, TAG_ANY);
		if (!request->password)
			request->password = pairfind(request->packet->vps, PW_CHAP_PASSWORD, 0, TAG_ANY);
	}

	if ((get_hv_content(rad_reply_hv, &vp)) > 0 ) {
		pairfree(&request->reply->vps);
		request->reply->vps = vp;
		vp = NULL;
	}

	if ((get_hv_content(rad_check_hv, &vp)) > 0 ) {
		pairfree(&request->config_items);
		request->config_items = vp;
		vp = NULL;
	}

#ifdef WITH_PROXY
	if (request->proxy &&
	    (get_hv_content(rad_request_proxy_hv, &vp) > 0)) {
		pairfree(&request->proxy->vps);
		request->proxy->vps = vp;
		vp = NULL;
	}

	if (request->proxy_reply &&
	    (get_hv_content(rad_request_proxy_reply_hv, &vp) > 0)) {
		pairfree(&request->proxy_reply->vps);
		request->proxy_reply->vps = vp;
		vp = NULL;
	}
#endif

	}
	return exitstatus;
}

//.........这里部分代码省略.........
			/*
			 *    If it is a SET operator, add the attribute to
			 *    the output list without checking it.
			 */
			if (check_item->op == T_OP_SET ) {
				vp = paircopyvp(packet, check_item);
				if (!vp) {
					goto error;
				}
				radius_xlat_do(request, vp);
				fr_cursor_insert(&out, vp);
			}
		}

		/*
		 *	Iterate through the input items, comparing
		 *	each item to every rule, then moving it to the
		 *	output list only if it matches all rules
		 *	for that attribute.  IE, Idle-Timeout is moved
		 *	only if it matches all rules that describe an
		 *	Idle-Timeout.
		 */
		for (input_item = fr_cursor_init(&input, &packet->vps);
		     input_item;
		     input_item = fr_cursor_next(&input)) {
			pass = fail = 0; /* reset the pass,fail vars for each reply item */

			/*
			 *  Reset the check_item pointer to beginning of the list
			 */
			for (check_item = fr_cursor_first(&check);
			     check_item;
			     check_item = fr_cursor_next(&check)) {
				/*
				 *  Vendor-Specific is special, and matches any VSA if the
				 *  comparison is always true.
				 */
				if ((check_item->da->attr == PW_VENDOR_SPECIFIC) && (input_item->da->vendor != 0) &&
				    (check_item->op == T_OP_CMP_TRUE)) {
					pass++;
					continue;
				}

				if (input_item->da == check_item->da) {
					check_pair(request, check_item, input_item, &pass, &fail);
				}
			}

			RDEBUG3("Attribute \"%s\" allowed by %i rules, disallowed by %i rules",
				input_item->da->name, pass, fail);
			/*
			 *  Only move attribute if it passed all rules, or if the config says we
			 *  should copy unmatched attributes ('relaxed' mode).
			 */
			if (fail == 0 && (pass > 0 || relax_filter)) {
				if (!pass) {
					RDEBUG3("Attribute \"%s\" allowed by relaxed mode", input_item->da->name);
				}
				vp = paircopyvp(packet, input_item);
				if (!vp) {
					goto error;
				}
				fr_cursor_insert(&out, vp);
			}
		}

		/* If we shouldn't fall through, break */
		if (!fall_through) {
			break;
		}
	}

	/*
	 *	No entry matched.  We didn't do anything.
	 */
	if (!found) {
		rad_assert(!output);
		return RLM_MODULE_NOOP;
	}

	/*
	 *	Replace the existing request list with our filtered one
	 */
	pairfree(&packet->vps);
	packet->vps = output;

	if (request->packet->code == PW_CODE_AUTHENTICATION_REQUEST) {
		request->username = pairfind(request->packet->vps, PW_STRIPPED_USER_NAME, 0, TAG_ANY);
		if (!request->username) {
			request->username = pairfind(request->packet->vps, PW_USER_NAME, 0, TAG_ANY);
		}
		request->password = pairfind(request->packet->vps, PW_USER_PASSWORD, 0, TAG_ANY);
	}

	return RLM_MODULE_UPDATED;

	error:
	pairfree(&output);
	return RLM_MODULE_FAIL;
}

//.........这里部分代码省略.........
				return false;
			}

		} else {
			rcode = get_cast_vp(&lhs_vp, request, map->dst, c->cast);
			if (rcode < 0) {
				return rcode;
			}
		}
		rad_assert(lhs_vp);

		/*
		 *	Get either a real VP, or parse the RHS into a
		 *	VP, and return that.
		 */
		if (map->src->type == VPT_TYPE_ATTR) {
			if (radius_vpt_get_vp(&rhs_vp, request, map->src) < 0) {
				return -2;
			}
		} else {
			rcode = get_cast_vp(&rhs_vp, request, map->src, c->cast);
			if (rcode < 0) {
				return rcode;
			}
			rad_assert(rhs_vp);
		}
		if (!rhs_vp) return -2;

		EVAL_DEBUG("CAST to %s",
			   fr_int2str(dict_attr_types,
				      c->cast->type, "?Unknown?"));

		rcode = paircmp_op(lhs_vp, map->op, rhs_vp);
		pairfree(&lhs_vp);
		if (map->src->type != VPT_TYPE_ATTR) {
			pairfree(&rhs_vp);
		}
		return rcode;
	}

	/*
	 *	Might be a virtual comparison
	 */
	if ((map->dst->type == VPT_TYPE_ATTR) &&
	    (map->src->type != VPT_TYPE_REGEX) &&
	    (map->src->type != VPT_TYPE_REGEX_STRUCT) &&
	    (c->pass2_fixup == PASS2_PAIRCOMPARE)) {
	    	int ret;
		VALUE_PAIR *lhs_vp;

		EVAL_DEBUG("virtual ATTR to DATA");

		rcode = get_cast_vp(&lhs_vp, request, map->src, map->dst->vpt_da);
		if (rcode < 0) {
			return rcode;
		}
		rad_assert(lhs_vp);

		/*
		 *	paircompare requires the operator be set for the
		 *	check attribute.
		 */
		lhs_vp->op = map->op;
		ret = paircompare(request, request->packet->vps, lhs_vp, NULL);
		talloc_free(lhs_vp);
		if (ret == 0) {

/*
 *	Common code called by everything below.
 */
static rlm_rcode_t file_common(rlm_files_t *inst, REQUEST *request,
		       char const *filename, fr_hash_table_t *ht,
		       VALUE_PAIR *request_pairs, VALUE_PAIR **reply_pairs)
{
	char const	*name, *match;
	VALUE_PAIR	*check_tmp;
	VALUE_PAIR	*reply_tmp;
	PAIR_LIST const *user_pl, *default_pl;
	int		found = 0;
	PAIR_LIST	my_pl;
	char		buffer[256];

	if (!inst->key) {
		VALUE_PAIR	*namepair;

		namepair = request->username;
		name = namepair ? namepair->vp_strvalue : "NONE";
	} else {
		int len;

		len = radius_xlat(buffer, sizeof(buffer), request, inst->key, NULL, NULL);
		if (len < 0) {
			return RLM_MODULE_FAIL;
		}

		name = len ? buffer : "NONE";
	}

	if (!ht) return RLM_MODULE_NOOP;

	my_pl.name = name;
	user_pl = fr_hash_table_finddata(ht, &my_pl);
	my_pl.name = "DEFAULT";
	default_pl = fr_hash_table_finddata(ht, &my_pl);

	/*
	 *	Find the entry for the user.
	 */
	while (user_pl || default_pl) {
		vp_cursor_t cursor;
		VALUE_PAIR *vp;
		PAIR_LIST const *pl;

		if (!default_pl && user_pl) {
			pl = user_pl;
			match = name;
			user_pl = user_pl->next;

		} else if (!user_pl && default_pl) {
			pl = default_pl;
			match = "DEFAULT";
			default_pl = default_pl->next;

		} else if (user_pl->order < default_pl->order) {
			pl = user_pl;
			match = name;
			user_pl = user_pl->next;

		} else {
			pl = default_pl;
			match = "DEFAULT";
			default_pl = default_pl->next;
		}

		check_tmp = paircopy(request, pl->check);
		for (vp = fr_cursor_init(&cursor, &check_tmp);
		     vp;
		     vp = fr_cursor_next(&cursor)) {
			if (radius_xlat_do(request, vp) < 0) {
				RWARN("Failed parsing expanded value for check item, skipping entry: %s", fr_strerror());
				pairfree(&check_tmp);
				continue;
			}
		}

		if (paircompare(request, request_pairs, pl->check, reply_pairs) == 0) {
			RDEBUG2("%s: Matched entry %s at line %d", filename, match, pl->lineno);
			found = 1;

			/* ctx may be reply or proxy */
			reply_tmp = paircopy(request, pl->reply);
			radius_xlat_move(request, reply_pairs, &reply_tmp);
			pairmove(request, &request->config_items, &check_tmp);

			/* Cleanup any unmoved valuepairs */
			pairfree(&reply_tmp);
			pairfree(&check_tmp);

			/*
			 *	Fallthrough?
			 */
			if (!fallthrough(pl->reply))
				break;
		}
	}

	/*
//.........这里部分代码省略.........

//.........这里部分代码省略.........

					size = fr_utf8_char(p);
					if (!size) {
						RWDEBUG("Unprintable characters in the password.  Double-check the "
							"shared secret on the server and the NAS!");
						break;
					}
					p += size;
				}
			}
		}
	}

#ifdef WITH_SESSION_MGMT
	if (result >= 0 &&
	    (check_item = pairfind(request->config, PW_SIMULTANEOUS_USE, 0, TAG_ANY)) != NULL) {
		int r, session_type = 0;
		char		logstr[1024];
		char		umsg[MAX_STRING_LEN + 1];

		tmp = pairfind(request->config, PW_SESSION_TYPE, 0, TAG_ANY);
		if (tmp) {
			session_type = tmp->vp_integer;
			RDEBUG2("Using Session-Type %s",
				dict_valnamebyattr(PW_SESSION_TYPE, 0, session_type));
		}

		/*
		 *	User authenticated O.K. Now we have to check
		 *	for the Simultaneous-Use parameter.
		 */
		if (request->username &&
		    (r = process_checksimul(session_type, request, check_item->vp_integer)) != 0) {
			char mpp_ok = 0;

			if (r == 2){
				/* Multilink attempt. Check if port-limit > simultaneous-use */
				VALUE_PAIR *port_limit;

				if ((port_limit = pairfind(request->reply->vps, PW_PORT_LIMIT, 0, TAG_ANY)) != NULL &&
					port_limit->vp_integer > check_item->vp_integer){
					RDEBUG2("MPP is OK");
					mpp_ok = 1;
				}
			}
			if (!mpp_ok){
				if (check_item->vp_integer > 1) {
					snprintf(umsg, sizeof(umsg), "%s (%u)", main_config.denied_msg,
						 check_item->vp_integer);
				} else {
					strlcpy(umsg, main_config.denied_msg, sizeof(umsg));
				}

				request->reply->code = PW_CODE_ACCESS_REJECT;

				/*
				 *	They're trying to log in too many times.
				 *	Remove ALL reply attributes.
				 */
				pairfree(&request->reply->vps);
				pairmake_reply("Reply-Message", umsg, T_OP_SET);

				snprintf(logstr, sizeof(logstr), "Multiple logins (max %d) %s",
					check_item->vp_integer,
					r == 2 ? "[MPP attempt]" : "");
				rad_authlog(logstr, request, 1);

				result = -1;
			}
		}
	}
#endif

	/*
	 *	Result should be >= 0 here - if not, it means the user
	 *	is rejected, so we just process post-auth and return.
	 */
	if (result < 0) {
		return RLM_MODULE_REJECT;
	}

	/*
	 *	Set the reply to Access-Accept, if it hasn't already
	 *	been set to something.  (i.e. Access-Challenge)
	 */
	if (request->reply->code == 0)
	  request->reply->code = PW_CODE_ACCESS_ACCEPT;

	if ((module_msg = pairfind(request->packet->vps, PW_MODULE_SUCCESS_MESSAGE, 0, TAG_ANY)) != NULL){
		char msg[MAX_STRING_LEN+12];

		snprintf(msg, sizeof(msg), "Login OK (%s)",
			 module_msg->vp_strvalue);
		rad_authlog(msg, request, 1);
	} else {
		rad_authlog("Login OK", request, 1);
	}

	return result;
}

/** Convert a map to a VALUE_PAIR.
 *
 * @param[out] out Where to write the VALUE_PAIR(s).
 * @param[in] request structure (used only for talloc)
 * @param[in] map the map. The LHS (dst) has to be VPT_TYPE_ATTR or VPT_TYPE_LIST.
 * @param[in] ctx unused
 * @return 0 on success, -1 on failure, -2 on attribute not found/equivalent
 */
int radius_map2vp(VALUE_PAIR **out, REQUEST *request, value_pair_map_t const *map, UNUSED void *ctx)
{
	int rcode = 0;
	VALUE_PAIR *vp = NULL, *found, **from = NULL;
	DICT_ATTR const *da;
	REQUEST *context;
	vp_cursor_t cursor;

	rad_assert(request != NULL);
	rad_assert(map != NULL);

	*out = NULL;

	/*
	 *	Special case for !*, we don't need to parse the value, just allocate an attribute with
	 *	the right operator.
	 */
	if (map->op == T_OP_CMP_FALSE) {
		vp = pairalloc(request, map->dst->da);
		if (!vp) return -1;
		vp->op = map->op;
		*out = vp;

		return 0;
	}

	/*
	 *	List to list found, this is a special case because we don't need
	 *	to allocate any attributes, just found the current list, and change
	 *	the op.
	 */
	if ((map->dst->type == VPT_TYPE_LIST) && (map->src->type == VPT_TYPE_LIST)) {
		from = radius_list(request, map->src->list);
		if (!from) return -2;

		found = paircopy(request, *from);
		/*
		 *	List to list copy is invalid if the src list has no attributes.
		 */
		if (!found) return -2;

		for (vp = paircursor(&cursor, &found);
		     vp;
		     vp = pairnext(&cursor)) {
		 	vp->op = T_OP_ADD;
		}

		*out = found;

		return 0;
	}

	/*
	 *	Deal with all non-list founding operations.
	 */
	da = map->dst->da ? map->dst->da : map->src->da;

	switch (map->src->type) {
	case VPT_TYPE_XLAT:
	case VPT_TYPE_LITERAL:
	case VPT_TYPE_DATA:
		vp = pairalloc(request, da);
		if (!vp) return -1;
		vp->op = map->op;
		break;
	default:
		break;
	}


	/*
	 *	And parse the RHS
	 */
	switch (map->src->type) {
	case VPT_TYPE_XLAT:
		rad_assert(map->dst->da);	/* Need to know where were going to write the new attribute */
		/*
		 *	Don't call unnecessary expansions
		 */
		if (strchr(map->src->name, '%') != NULL) {
			ssize_t slen;
			char *str = NULL;

			slen = radius_axlat(&str, request, map->src->name, NULL, NULL);
			if (slen < 0) {
				rcode = slen;
				goto error;
			}
			rcode = pairparsevalue(vp, str);
			talloc_free(str);
			if (!rcode) {
				pairfree(&vp);
//.........这里部分代码省略.........

/*
 *  Dispatch an exec method
 */
static rlm_rcode_t CC_HINT(nonnull) mod_exec_dispatch(void *instance, REQUEST *request)
{
	rlm_exec_t	*inst = (rlm_exec_t *)instance;
	rlm_rcode_t	rcode;
	int		status;

	VALUE_PAIR	**input_pairs = NULL, **output_pairs = NULL;
	VALUE_PAIR	*answer = NULL;
	char		out[1024];

	/*
	 *	We need a program to execute.
	 */
	if (!inst->program) {
		ERROR("rlm_exec (%s): We require a program to execute", inst->xlat_name);
		return RLM_MODULE_FAIL;
	}

	/*
	 *	See if we're supposed to execute it now.
	 */
	if (!((inst->packet_code == 0) || (request->packet->code == inst->packet_code) ||
	      (request->reply->code == inst->packet_code)
#ifdef WITH_PROXY
	      || (request->proxy && (request->proxy->code == inst->packet_code)) ||
	      (request->proxy_reply && (request->proxy_reply->code == inst->packet_code))
#endif
		    )) {
		RDEBUG2("Packet type is not %s. Not executing.", inst->packet_type);

		return RLM_MODULE_NOOP;
	}

	/*
	 *	Decide what input/output the program takes.
	 */
	if (inst->input) {
		input_pairs = radius_list(request, inst->input_list);
		if (!input_pairs) {
			return RLM_MODULE_INVALID;
		}
	}

	if (inst->output) {
		output_pairs = radius_list(request, inst->output_list);
		if (!output_pairs) {
			return RLM_MODULE_INVALID;
		}
	}

	/*
	 *	This function does it's own xlat of the input program
	 *	to execute.
	 */
	status = radius_exec_program(out, sizeof(out), inst->output ? &answer : NULL, request,
				     inst->program, inst->input ? *input_pairs : NULL,
				     inst->wait, inst->shell_escape, inst->timeout);
	rcode = rlm_exec_status2rcode(request, out, strlen(out), status);

	/*
	 *	Move the answer over to the output pairs.
	 *
	 *	If we're not waiting, then there are no output pairs.
	 */
	if (inst->output) {
		pairmove(request, output_pairs, &answer);
	}
	pairfree(&answer);

	return rcode;
}

/** Process map which has exec as a src
 *
 * Evaluate maps which specify exec as a src. This may be used by various sorts of update sections, and so
 * has been broken out into it's own function.
 *
 * @param[out] out Where to write the VALUE_PAIR(s).
 * @param[in] request structure (used only for talloc).
 * @param[in] map the map. The LHS (dst) must be VPT_TYPE_ATTR or VPT_TYPE_LIST. The RHS (src) must be VPT_TYPE_EXEC.
 * @return -1 on failure, 0 on success.
 */
int radius_mapexec(VALUE_PAIR **out, REQUEST *request, value_pair_map_t const *map)
{
	int result;
	char *expanded = NULL;
	char answer[1024];
	VALUE_PAIR **input_pairs = NULL;
	VALUE_PAIR **output_pairs = NULL;

	*out = NULL;

	rad_assert(map->src->type == VPT_TYPE_EXEC);
	rad_assert((map->dst->type == VPT_TYPE_ATTR) || (map->dst->type == VPT_TYPE_LIST));

	/*
	 *	We always put the request pairs into the environment
	 */
	input_pairs = radius_list(request, PAIR_LIST_REQUEST);

	/*
	 *	Automagically switch output type depending on our destination
	 *	If dst is a list, then we create attributes from the output of the program
	 *	if dst is an attribute, then we create an attribute of that type and then
	 *	call pairparsevalue on the output of the script.
	 */
	out[0] = '\0';
	result = radius_exec_program(request, map->src->name, true, true,
				     answer, sizeof(answer),
				     input_pairs ? *input_pairs : NULL,
				     (map->dst->type == VPT_TYPE_LIST) ? output_pairs : NULL);
	talloc_free(expanded);
	if (result != 0) {
		REDEBUG("%s", answer);
		talloc_free(output_pairs);
		return -1;
	}

	switch (map->dst->type) {
	case VPT_TYPE_LIST:
		if (!output_pairs) {
			return -2;
		}
		*out = *output_pairs;

		return 0;
	case VPT_TYPE_ATTR:
		{
			VALUE_PAIR *vp;

			vp = pairalloc(request, map->dst->da);
			if (!vp) return -1;
			vp->op = map->op;
			if (!pairparsevalue(vp, answer)) {
				pairfree(&vp);
				return -2;
			}
			*out = vp;

			return 0;
		}
	default:
		rad_assert(0);
	}

	return -1;
}

//.........这里部分代码省略.........
		return;
	}

	switch (packet->code) {
	case PW_CODE_COA_REQUEST:
		/* we need a 16 x 0 byte vector for decrypting encrypted VSAs */
		original = nullpacket;
		break;
	case PW_CODE_AUTHENTICATION_ACK:
		/* look for a matching request and use it for decoding */
		original = rbtree_finddata(request_tree, packet);
		break;
	case PW_CODE_AUTHENTICATION_REQUEST:
		/* save the request for later matching */
		original = rad_alloc_reply(NULL, packet);
		if (original) { /* just ignore allocation failures */
			rbtree_deletebydata(request_tree, original);
			rbtree_insert(request_tree, original);
		}
		/* fallthrough */
	default:
		/* don't attempt to decode any encrypted attributes */
		original = NULL;
	}

	/*
	 *  Decode the data without bothering to check the signatures.
	 */
	if (rad_decode(packet, original, radius_secret) != 0) {
		rad_free(&packet);
		fr_perror("decode");
		return;
	}

	/*
	 *  We've seen a successfull reply to this, so delete it now
	 */
	if (original)
		rbtree_deletebydata(request_tree, original);

	if (filter_vps && filter_packet(packet)) {
		rad_free(&packet);
		DEBUG("Packet number %d doesn't match\n", count++);
		return;
	}

	if (out) {
		pcap_dump((void *) out, header, data);
		goto check_filter;
	}

	INFO("%s Id %d\t", fr_packet_codes[packet->code], packet->id);

	/*
	 *  Print the RADIUS packet
	 */
	INFO("%s:%d -> %s:%d", inet_ntoa(ip->ip_src), ntohs(udp->udp_sport),
	     inet_ntoa(ip->ip_dst), ntohs(udp->udp_dport));

	DEBUG1("\t(%d packets)", count++);

	if (!start_pcap.tv_sec) {
		start_pcap = header->ts;
	}

	tv_sub(&header->ts, &start_pcap, &elapsed);

	INFO("\t+%u.%03u", (unsigned int) elapsed.tv_sec,
	       (unsigned int) elapsed.tv_usec / 1000);

	if (fr_debug_flag > 1) {
		DEBUG("\n");
		if (packet->vps) {
			if (do_sort) {
				pairsort(&packet->vps, true);
			}
			vp_printlist(log_dst, packet->vps);
			pairfree(&packet->vps);
		}
	}

	INFO("\n");

	if (!to_stdout && (fr_debug_flag > 4)) {
		rad_print_hex(packet);
	}

	fflush(log_dst);

 check_filter:
	/*
	 *  If we're doing filtering, Access-Requests are cached in the
	 *  filter tree.
	 */
	if (!filter_vps ||
	    ((packet->code != PW_CODE_AUTHENTICATION_REQUEST) &&
	     (packet->code != PW_CODE_ACCOUNTING_REQUEST))) {
		rad_free(&packet);
	}
}

static rlm_rcode_t rlm_redisn_authorize(void *instance, REQUEST * request)
{
	VALUE_PAIR *check_tmp = NULL;
	VALUE_PAIR *reply_tmp = NULL;
	VALUE_PAIR *user_profile = NULL;
	int     found = 0;
	int	dofallthrough = 1;
	int	rows;
	REDISSOCK *redis_socket;
	REDIS_INST *inst = instance;
	char    querystr[MAX_QUERY_LEN];
	char	redisnusername[MAX_STRING_LEN];
	/*
	 * the profile username is used as the redisnusername during
	 * profile checking so that we don't overwrite the orignal
	 * redisnusername string
	 */
	char   profileusername[MAX_STRING_LEN];

	/*
	 * Set, escape, and check the user attr here
	 */
	if (redisn_set_user(inst, request, redisnusername, NULL) < 0)
		return RLM_MODULE_FAIL;


	/*
	 * reserve a socket
	 */
	redis_socket = redisn_get_socket(inst);
	if (redis_socket == NULL) {
		/* Remove the username we (maybe) added above */
		pairdelete(&request->packet->vps, PW_REDIS_USER_NAME, 0, TAG_ANY);
		return RLM_MODULE_FAIL;
	}


	/*
	 *  After this point, ALL 'return's MUST release the REDISN socket!
	 */

	/*
	 * Alright, start by getting the specific entry for the user
	 */
	if (!radius_xlat(querystr, sizeof(querystr), inst->authorize_check_query, request, redisn_escape_func, inst)) {
		radlog_request(L_ERR, 0, request, "Error generating query; rejecting user");
		redisn_release_socket(inst, redis_socket);
		/* Remove the username we (maybe) added above */
		pairdelete(&request->packet->vps, PW_REDIS_USER_NAME, 0, TAG_ANY);
		return RLM_MODULE_FAIL;
	}
	rows = redisn_getvpdata(inst, redis_socket, &check_tmp, querystr);
	if (rows < 0) {
		radlog_request(L_ERR, 0, request, "REDISN query error; rejecting user");
		redisn_release_socket(inst, redis_socket);
		/* Remove the username we (maybe) added above */
		pairdelete(&request->packet->vps, PW_REDIS_USER_NAME, 0, TAG_ANY);
		pairfree(&check_tmp);
		return RLM_MODULE_FAIL;
	} else if (rows > 0) {
		/*
		 *	Only do this if *some* check pairs were returned
		 */
		if (paircompare(request, request->packet->vps, check_tmp, &request->reply->vps) == 0) {
			found = 1;
			RDEBUG2("User found in radcheck table");

			if (inst->authorize_reply_query &&
			    *inst->authorize_reply_query) {

			/*
			 *	Now get the reply pairs since the paircompare matched
			 */
			if (!radius_xlat(querystr, sizeof(querystr), inst->authorize_reply_query, request, redisn_escape_func, inst)) {
				radlog_request(L_ERR, 0, request, "Error generating query; rejecting user");
				redisn_release_socket(inst, redis_socket);
				/* Remove the username we (maybe) added above */
				pairdelete(&request->packet->vps, PW_REDIS_USER_NAME, 0, TAG_ANY);
				pairfree(&check_tmp);
				return RLM_MODULE_FAIL;
			}
			if (redisn_getvpdata(inst, redis_socket, &reply_tmp, querystr) < 0) {
				radlog_request(L_ERR, 0, request, "REDISN query error; rejecting user");
				redisn_release_socket(inst, redis_socket);
				/* Remove the username we (maybe) added above */
				pairdelete(&request->packet->vps, PW_REDIS_USER_NAME, 0, TAG_ANY);
				pairfree(&check_tmp);
				pairfree(&reply_tmp);
				return RLM_MODULE_FAIL;
			}

			if (!inst->read_groups) {
				dofallthrough = fallthrough(reply_tmp);
				DEBUG("rlm_redisn (%s) %d: dofallthrough: %d",
				      inst->xlat_name,
				      __LINE__,dofallthrough);
			}
			pairxlatmove(request, &request->reply->vps, &reply_tmp);
			}
			pairxlatmove(request, &request->config_items, &check_tmp);
//.........这里部分代码省略.........

static rlm_rcode_t rlm_sql_process_groups(rlm_sql_t *inst, REQUEST *request, rlm_sql_handle_t **handle,
					  sql_fall_through_t *do_fall_through)
{
	rlm_rcode_t		rcode = RLM_MODULE_NOOP;
	VALUE_PAIR		*check_tmp = NULL, *reply_tmp = NULL, *sql_group = NULL;
	rlm_sql_grouplist_t	*head = NULL, *entry = NULL;

	char			*expanded = NULL;
	int			rows;

	rad_assert(request->packet != NULL);

	/*
	 *	Get the list of groups this user is a member of
	 */
	rows = sql_get_grouplist(inst, handle, request, &head);
	if (rows < 0) {
		REDEBUG("Error retrieving group list");

		return RLM_MODULE_FAIL;
	}
	if (rows == 0) {
		RDEBUG2("User not found in any groups");
		rcode = RLM_MODULE_NOTFOUND;
		goto finish;
	}
	rad_assert(head);

	RDEBUG2("User found in the group table");

	entry = head;
	do {
		/*
		 *	Add the Sql-Group attribute to the request list so we know
		 *	which group we're retrieving attributes for
		 */
		sql_group = pairmake_packet("Sql-Group", entry->name, T_OP_EQ);
		if (!sql_group) {
			REDEBUG("Error creating Sql-Group attribute");
			rcode = RLM_MODULE_FAIL;
			goto finish;
		}

		if (inst->config->authorize_group_check_query && (*inst->config->authorize_group_check_query != '\0')) {
			vp_cursor_t cursor;
			VALUE_PAIR *vp;

			/*
			 *	Expand the group query
			 */
			if (radius_axlat(&expanded, request, inst->config->authorize_group_check_query,
					 sql_escape_func, inst) < 0) {
				REDEBUG("Error generating query");
				rcode = RLM_MODULE_FAIL;
				goto finish;
			}

			rows = sql_getvpdata(request, inst, handle, &check_tmp, expanded);
			TALLOC_FREE(expanded);
			if (rows < 0) {
				REDEBUG("Error retrieving check pairs for group %s", entry->name);
				rcode = RLM_MODULE_FAIL;
				goto finish;
			}

			/*
			 *	If we got check rows we need to process them before we decide to process the reply rows
			 */
			if ((rows > 0) &&
			    (paircompare(request, request->packet->vps, check_tmp, &request->reply->vps) != 0)) {
				pairfree(&check_tmp);
				pairdelete(&request->packet->vps, PW_SQL_GROUP, 0, TAG_ANY);

				continue;
			}

			RDEBUG2("Group \"%s\": Conditional check items matched", entry->name);
			rcode = RLM_MODULE_OK;

			RDEBUG2("Group \"%s\": Merging assignment check items", entry->name);
			RINDENT();
			for (vp = fr_cursor_init(&cursor, &check_tmp);
			     vp;
			     vp = fr_cursor_next(&cursor)) {
			 	if (!fr_assignment_op[vp->op]) continue;

			 	rdebug_pair(2, request, vp);
			}
			REXDENT();
			radius_pairmove(request, &request->config_items, check_tmp, true);
			check_tmp = NULL;
		}

		if (inst->config->authorize_group_reply_query && (*inst->config->authorize_group_reply_query != '\0')) {
			/*
			 *	Now get the reply pairs since the paircompare matched
			 */
			if (radius_axlat(&expanded, request, inst->config->authorize_group_reply_query,
					 sql_escape_func, inst) < 0) {
				REDEBUG("Error generating query");
//.........这里部分代码省略.........