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SQL for radiusd patch. (SQL radius)


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From: Harris Vaegan-Lloyd <harris@hightide.net.au> To: miquels@cistron.nl Subject: SQL for radiusd patch. Message-ID: <35CEC1CA.C54AEEDE@hightide.net.au> Date: Mon, 10 Aug 1998 09:47:54 +0000 Organization: Hightide Internet I hada a desperate need to further destory my little free time and make my gf hate me so I've added the ability to authenticate and log to a PostgreSQL databse from radiusd-cistron. I hope you like it ;). It's a bit hairy at the moment but a fair few people seem to want it as much as I did. -- Harris Vaegan-Lloyd. PSTN: +61-02-9557-2638 SMTP: harris@hightide.net.au - Linux - Perl - Deveolpment - Admin - Web Programming - Databases - diff -ur -N radiusd-cistron-1.5.4.3/doc/README.sql radiusd-sql/doc/README.sql --- radiusd-cistron-1.5.4.3/doc/README.sql Thu Jan 1 10:00:00 1970 +++ radiusd-sql/doc/README.sql Mon Aug 10 19:24:02 1998 @@ -0,0 +1,46 @@ +Greetings dear valued customer.. + +All the addition to radiusd-cistron to add authentication and logging with an postgresql databse are copyright Harris Vaegan-Lloyd and placed under the current version of the GPL. + +This is messy at the moment and I wouldn't reccomend it for use in a production environment. However +if your marketting department has though up some completly insane pricing scheme for dialup you should +find it useful ;). All the radius log analysis stuff I've use so far has been very nice but, well. I +like SQL and think everything is improved by being able to work with a database ;). + +Radiusd expects two tables, one with username and passwords, and one to hold the logs. usernames and passwords are self-explanatory. The logs table holds the username, time logged in, time logged out, data in and data out. Time logged in is calculated by subtracting the Acct-Time-Session value. bwin and bwout are calculated from the Acct-Input-Octets and Acct-Output-Octets values. User name is from, well , User-Name, strangely enough. + +Example SQL code - + +To create the table. +\connect radiusd - +CREATE TABLE users (pass varchar(16), username varchar(8)); +CREATE TABLE logs (bwin int4, bwout int4, name varchar(32), start datetime, stop datetime); + +To find the total bandwidth use in megs for a user - +select (sum(bwin) + sum(bwout)) /1024) from logs where name='user' + +To find the total time use in seconds for a user. +select sum(date_part('epoch',age(stop,start))) from logs where name='user'; + +To get it for a specific time period add something like - +where (date_part('month', start) = 8) and (date_part('year', start) = 1998) + +So say if you wanted to find out the total cost for a user considering you charged 35 cents a megabyte and 1.1 cents a minutes with 5 hours a month and 20 megs free youc could use this line to find out the total cost for the user.. + +select int4larger(sum(bwin + bwout) / 1024 - 20, 0) * 35 + + int4larger(((sum(date_part('epoch',age(stop,start))) / 60) - 300)::int4,0) * 1.1 + where name = 'user' and date_part('month', start) = 8 and date_part('year', start) = 1998; + +Not exactly a simple SQL statment but it took me a quarter of an hour to get the same thing that took me four days off and on to do in perl. + +TODO - +- Make the authentication part check a boolean variable to see if the user is locked out or not, maybe a way to set the reason for lockout as well. +- Throw together a web interface to get user status info for admins and user alike, generate reports etc etc etc. This is the kind of boring cruft I do for a living so it shouldn't take too long but will be ages before I actually get around to it. +- Do some checks to see if the database connection is OK before each insert, and if it's not reconnect. +- Give it some real testing. The perl scripts I used to send the accounting packets don't really count. +- Find a new job where I can get some real time to work on it ;). + + +Compilation instructions. + +Uncomment the lines that begin with SQL and SQLLIB in the Makefile as per PAM support. Then make as usual. diff -ur -N radiusd-cistron-1.5.4.3/src/Make.inc radiusd-sql/src/Make.inc --- radiusd-cistron-1.5.4.3/src/Make.inc Sat Jul 4 23:49:25 1998 +++ radiusd-sql/src/Make.inc Sun Aug 9 18:41:46 1998 @@ -7,6 +7,8 @@ BINDIR = /usr/local/bin SBINDIR = /usr/local/sbin +SERVERSQL_OBJS = radiusd.o dict.o files.o util.o md5.o attrprint.o acct.o \ + misc.o pam.o log.o version.o pgsql.o SERVER_OBJS = radiusd.o dict.o files.o util.o md5.o attrprint.o acct.o \ misc.o pam.o log.o version.o SERVERDBM_OBJS = radiusd.o dict.o filesdbm.o util.o md5.o attrprint.o acct.o \ @@ -20,17 +22,21 @@ dbm: radiusd.dbm builddbm radiusd: $(SERVER_OBJS) - $(CC) $(LDFLAGS) -o radiusd $(SERVER_OBJS) $(LIBS) $(LCRYPT) $(PAMLIB) + $(CC) $(LDFLAGS) -o radiusd $(SERVER_OBJS) $(LIBS) $(LCRYPT) $(PAMLIB) $(SQLLIB) radiusd.dbm: $(SERVERDBM_OBJS) $(CC) $(LDFLAGS) -o radiusd.dbm $(SERVERDBM_OBJS) $(LIBS) $(LCRYPT) \ - $(DBMLIB) $(PAMLIB) + $(DBMLIB) $(PAMLIB) $(SQLLIB) + +radiusd.sql: $(SERVERSQL_OBJS) + $(CC) $(LDFLAGS) -o radiusd $(SERVERSQL_OBJS) $(LIBS) $(LCRYPT) \ + $(DBMLIB) $(PAMLIB) $(SQLLIB) radiusd.o: radiusd.c $(INCLUDES) - $(CC) $(CFLAGS) $(PAM) -c radiusd.c + $(CC) $(CFLAGS) $(PAM) $(SQL) -c radiusd.c acct.o: acct.c $(INCLUDES) - $(CC) $(CFLAGS) -c acct.c + $(CC) $(CFLAGS) $(SQL) -c acct.c attrprint.o: attrprint.c $(INCLUDES) $(CC) $(CFLAGS) -c attrprint.c @@ -52,6 +58,9 @@ pam.o: pam.c $(INCLUDES) $(CC) $(CFLAGS) $(PAM) -c pam.c + +pgsql.o: pgsql.c $(INCLUDES) + $(CC) $(CFLAGS) $(SQL) -c pgsql.c version.o: version.c $(INCLUDES) $(CC) $(CFLAGS) -o version.o -c version.c diff -ur -N radiusd-cistron-1.5.4.3/src/Makefile radiusd-sql/src/Makefile --- radiusd-cistron-1.5.4.3/src/Makefile Sun Nov 23 01:51:42 1997 +++ radiusd-sql/src/Makefile Sun Aug 9 18:40:08 1998 @@ -14,15 +14,20 @@ endif CC = gcc -CFLAGS = -Wall -g # -DNOSHADOW +CFLAGS = -Wall -g -I/usr/local/pgsql/include# -DNOSHADOW LDFLAGS = # -s # tatic -LIBS = $(LSHADOW) +LIBS = $(LSHADOW) -lcrypt +INCLUDES = + DBM = -DNDBM DBMLIB = -ldb #PAM = -DPAM #PAMLIB = -lpam -ldl + +SQL = -DUSE_SQL +SQLLIB = -lpq -L/usr/local/pgsql/lib BINDIR = /usr/local/bin SBINDIR = /usr/local/sbin diff -ur -N radiusd-cistron-1.5.4.3/src/acct.c radiusd-sql/src/acct.c --- radiusd-cistron-1.5.4.3/src/acct.c Wed Jun 24 00:13:24 1998 +++ radiusd-sql/src/acct.c Sun Aug 9 18:28:39 1998 @@ -27,7 +27,9 @@ #include "radiusd.h" #include "radutmp.h" - +#if USE_SQL +#include "/usr/local/pgsql/include/libpq-fe.h" +#endif /* * FIXME: this should be configurable. */ @@ -40,7 +42,9 @@ static char porttypes[] = "ASITX"; #define LOCK_LEN sizeof(struct radutmp) - +#ifdef USE_SQL +PGconn *PSQLconn; +#endif /* * UUencode 4 bits base64. We use this to turn a 4 byte field * (an IP adres) into 6 bytes of ASCII. This is used for the @@ -455,8 +459,88 @@ return ret; } +#if USE_SQL +int rad_accounting_sql(AUTH_REQ *auth_req) +{ + VALUE_PAIR *pair; + time_t curtime; + struct tm *tm; + char *start_time; + char *stop_time; + ulong sess_time; + char *name; + UINT4 bwin; + UINT4 bwout; + char *sql; + PGresult* res; + + + curtime = time(0); + start_time = malloc(32); + stop_time = malloc(32); + name = malloc(32); + + /* next we use gmtime() to take this time and get it into a format + * suitable for SQL. */ + tm = gmtime(&curtime); + + snprintf(stop_time, 32, "%d-%d-%d %d:%d:%d", + (1900 + tm->tm_year), + (tm->tm_mon + 1), + tm->tm_mday, + tm->tm_hour, tm->tm_min, tm->tm_sec); + + /* Init the SQL string. */ + sql = malloc(256); + + pair = auth_req->request; + while(pair != (VALUE_PAIR *)NULL) { + if (! strcmp(pair->name, "Acct-Status-Type")) { + if (pair->lvalue != PW_STATUS_STOP ) { + return 0; // We only need the stop packets for + } // the sql accounting. */ + } else if (! strcmp(pair->name, "Acct-Input-Octets")) { + bwin = pair->lvalue; + } else if (! strcmp(pair->name, "Acct-Output-Octets")) { + bwout = pair->lvalue; + } else if (! strcmp(pair->name, "User-Name")) { + sprintf(name, "%s", pair->strvalue); + } else if (! strcmp(pair->name, "Acct-Session-Time")) { + sess_time = pair->lvalue; + } + pair = pair->next; + } + + /* O.K. Now we have the time that the session ended, we use the + * Acct-Session-Time to work out when it started + * We got the length of the session from the accouning request and + * the time that it ended form when we received this request. + */ + curtime = curtime - sess_time; + tm = gmtime(&curtime); + snprintf(start_time, 32, "%d-%d-%d %d:%d:%d", + (1900 + tm->tm_year), + (tm->tm_mon + 1), + tm->tm_mday, + tm->tm_hour, tm->tm_min, tm->tm_sec); + /* Hey rocky! Watch me pull an insert statement out of my hat! */ + + snprintf(sql, 256, "insert into logs values ( %ld, %ld, '%s', '%s', '%s')", bwin, bwout, name, start_time, stop_time); + + res = PQexec(PSQLconn, sql); + if (PQresultStatus(res) != PGRES_COMMAND_OK ){ + log(L_ERR, "Insert failed: %s\n", PQerrorMessage(PSQLconn)); + } + free(sql); + free(name); + free(start_time); + free(stop_time); + + return 0; +} +#endif /* USE_SQL */ int rad_accounting_orig(AUTH_REQ *authreq, int authtype, char *f) { @@ -638,6 +722,10 @@ * we run it first, the stripped info will also * get into the "details" file. */ +#if USE_SQL + if (rad_accounting_sql(authreq) == 0) + reply = 1; +#endif if (rad_accounting_new(authreq, 1) == 0) reply = 1; if (rad_accounting_orig(authreq, auth, NULL) == 0) @@ -647,6 +735,10 @@ * First log into the details file, before the * username gets stripped by rad_accounting_new. */ +#if USE_SQL + if (rad_accounting_sql(authreq) == 0) + reply = 1; +#endif if (rad_accounting_orig(authreq, auth, NULL) == 0) reply = 1; if (rad_accounting_new(authreq, 1) == 0) diff -ur -N radiusd-cistron-1.5.4.3/src/pgsql.c radiusd-sql/src/pgsql.c --- radiusd-cistron-1.5.4.3/src/pgsql.c Thu Jan 1 10:00:00 1970 +++ radiusd-sql/src/pgsql.c Mon Aug 3 23:51:41 1998 @@ -0,0 +1,32 @@ +#include <stdio.h> +#include "/usr/local/pgsql/include/libpq-fe.h" +#include <unistd.h> +#include "radiusd.h" + +PGconn *PSQLconn; + +void exit_nicely(PGconn* conn) +{ + PQfinish(conn); + exit(1); +} + +int psql_pass(char *user, char *pass) { + PGresult* res; + char *passbuff; + char *sql; + + passbuff = malloc(8); + + sql = malloc(sizeof("select pass from users where username = ''") + sizeof(user)); + sprintf(sql, "select pass from users where username = '%s'", user); + res = PQexec(PSQLconn, sql); + if (PQresultStatus(res) != PGRES_TUPLES_OK) { + log(L_ERR, "No such user in SQL db."); + PQclear(res); + } + free(sql); + snprintf(passbuff,8,"%s",PQgetvalue(res,0,0)); + PQclear(res); + return(strncmp(pass, passbuff, 8)); +} diff -ur -N radiusd-cistron-1.5.4.3/src/radius.h radiusd-sql/src/radius.h --- radiusd-cistron-1.5.4.3/src/radius.h Sat Jul 4 23:54:46 1998 +++ radiusd-sql/src/radius.h Wed Jul 15 20:16:15 1998 @@ -164,6 +164,7 @@ #define PW_AUTHTYPE_SECURID 2 #define PW_AUTHTYPE_CRYPT 3 #define PW_AUTHTYPE_REJECT 4 +#define PW_AUTHTYPE_SQL 252 #define PW_AUTHTYPE_PAM 253 #define PW_AUTHTYPE_ACCEPT 254 diff -ur -N radiusd-cistron-1.5.4.3/src/radiusd.c radiusd-sql/src/radiusd.c --- radiusd-cistron-1.5.4.3/src/radiusd.c Sat Jul 4 23:54:26 1998 +++ radiusd-sql/src/radiusd.c Sun Aug 9 18:27:28 1998 @@ -93,7 +93,9 @@ UINT4 expiration_seconds; UINT4 warning_seconds; static AUTH_REQ *first_request; - +#if USE_SQL +PGconn *PSQLconn; +#endif #if !defined(__linux__) && !defined(__GNU_LIBRARY__) extern int errno; #endif @@ -160,6 +162,13 @@ int main(int argc, char **argv) { +#if USE_SQL + char *pghost = "localhost"; + char *pgport = NULL; + char *pgoptions = NULL; + char *pgtty = NULL; + char *dBname = "radiusd"; +#endif int salen; int result; struct sockaddr salocal; @@ -334,6 +343,16 @@ perror ("acct bind"); exit(1); } +#if USE_SQL + /* + * Start that funky SQL thang happening. + */ + PSQLconn = PQsetdb(pghost,pgport,pgoptions,pgtty,dBname); + if (PQstatus(PSQLconn) == CONNECTION_BAD) { + log(L_INFO, "Connection to the database failed."); + exit_nicely(PSQLconn); + } +#endif /* * Disconnect from session @@ -961,7 +980,7 @@ strcpy(userpass, string); } -#if 0 /* DEBUG */ +#if 1 /* DEBUG */ printf("auth_type=%d, string=%s, namepair=%s, password_pair=%s\n", auth_type, string, name, password_pair ? password_pair->strvalue : ""); @@ -1049,6 +1068,14 @@ CHAP_VALUE_LENGTH) != 0) result = -1; break; +#if USE_SQL + case PW_AUTHTYPE_SQL: + printf("Entering Auth For SQL"); + if(psql_pass(name, string) != 0) { + result = -1; + } + break; +#endif /* USEUSE_SQL */ default: result = -1; break; diff -ur -N radiusd-cistron-1.5.4.3/src/radiusd.h radiusd-sql/src/radiusd.h --- radiusd-cistron-1.5.4.3/src/radiusd.h Wed Jun 24 00:41:10 1998 +++ radiusd-sql/src/radiusd.h Sun Aug 9 18:28:10 1998 @@ -33,7 +33,9 @@ #include "sysdep.h" #include "radius.h" #include "conf.h" - +#if USE_SQL +#include "/usr/local/pgsql/include/libpq-fe.h" +#endif /* Server data structures */ typedef struct dict_attr { @@ -121,7 +123,9 @@ extern int radius_pid; extern int use_dbm; extern int log_stripped_names; - +#if USE_SQL +extern PGconn *PSQLconn; +#endif /* * Function prototypes. */ @@ -197,3 +201,8 @@ int pam_pass(char *name, char *passwd); #endif +#ifdef USE_SQL +/* pgsql.c */ +void exit_nicely(PGconn *conn); +int psql_pass(char *user, char *pass); +#endif

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