/*********************************************************************** RADIUS Remote Authentication Dial In User Service Lucent Technologies Remote Access 4464 Willow Road Pleasanton, CA 94588 Copyright 1992-1999 Lucent Technologies Inc. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * All advertising materials mentioning features or use of this software must display the following acknowledgement: This product includes software developed by Lucent Technologies and its contributors. * Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. This software is provided by the copyright holders and contributors ``as is'' and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall the copyright holder or contributors be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage. ************************************************************************/ static char sccsid[] = "$Id: util.c,v 1.12 1999/06/23 23:40:45 cdr Exp $ Copyright 1992-1999 Lucent Technologies Inc"; #include #include #include #include #include #include #include #include #include #include "radius.h" /* Memory structures allocated, for debugging purposes */ int hmembuf = 0; /* highwater marks */ int hmempair = 0; int hmempeer = 0; int hmemreq = 0; int nmembuf = 0; /* number allocated but not freed */ int nmempair = 0; int nmempeer = 0; int nmemreq = 0; int tmembuf = 0; /* total number allocated */ int tmempair = 0; int tmempeer = 0; int tmemreq = 0; extern int debug_mem; /************************************************************************* * * Function: ip_hostname * * Purpose: Return a printable host name (or IP address in dot notation) * for the supplied IP address. * *************************************************************************/ char * ip_hostname(ipaddr) UINT4 ipaddr; { struct hostent *hp; static char hstname[128]; UINT4 n_ipaddr; void ipaddr2str(); n_ipaddr = htonl(ipaddr); hp = gethostbyaddr((char *)&n_ipaddr, sizeof (struct in_addr), AF_INET); if (hp == 0) { ipaddr2str(hstname, ipaddr); return(hstname); } return(hp->h_name); } /************************************************************************* * * Function: get_ipaddr * * Purpose: Return an IP address in host long notation from a host * name or address in dot notation. * *************************************************************************/ UINT4 get_ipaddr(host) char *host; { struct hostent *hp; UINT4 ipstr2long(); int good_ipaddr(); if(good_ipaddr(host) == 0) { return(ipstr2long(host)); } else if((hp = gethostbyname(host)) == (struct hostent *)NULL) { return((UINT4)0); } return(ntohl(*(UINT4 *)hp->h_addr)); } /************************************************************************* * * Function: good_ipaddr * * Purpose: Check for valid IP address in standard dot notation. * *************************************************************************/ int good_ipaddr(addr) char *addr; { int dot_count; int digit_count; dot_count = 0; digit_count = 0; while(*addr != '\0' && *addr != ' ') { if(*addr == '.') { dot_count++; digit_count = 0; } else if(!isdigit(*addr)) { dot_count = 5; } else { digit_count++; if(digit_count > 3) { dot_count = 5; } } addr++; } if(dot_count != 3) { return(-1); } else { return(0); } } /************************************************************************* * * Function: ipaddr2str * * Purpose: Return an IP address in standard dot notation for the * provided address in host long notation. * *************************************************************************/ void ipaddr2str(buffer, ipaddr) char *buffer; UINT4 ipaddr; { int addr_byte[4]; int i; UINT4 xbyte; for(i = 0;i < 4;i++) { xbyte = ipaddr >> (i*8); xbyte = xbyte & (UINT4)0x000000FF; addr_byte[i] = xbyte; } sprintf(buffer, "%u.%u.%u.%u", addr_byte[3], addr_byte[2], addr_byte[1], addr_byte[0]); } /************************************************************************* * * Function: ipaddr2strp * * Purpose: Return an IP address in standard dot notation for the * provided address in host long notation. * *************************************************************************/ char * ipaddr2strp(ipaddr) UINT4 ipaddr; { int addr_byte[4]; int i; UINT4 xbyte; static char buffer[32]; for(i = 0;i < 4;i++) { xbyte = ipaddr >> (i*8); xbyte = xbyte & (UINT4)0x000000FF; addr_byte[i] = xbyte; } sprintf(buffer, "%u.%u.%u.%u", addr_byte[3], addr_byte[2], addr_byte[1], addr_byte[0]); return(buffer); } /************************************************************************* * * Function: ipstr2long * * Purpose: Return an IP address in host long notation from * one supplied in standard dot notation. * *************************************************************************/ UINT4 ipstr2long(ip_str) char *ip_str; { char buf[6]; char *ptr; int i; int count; UINT4 ipaddr; int cur_byte; int atoi(); ipaddr = (UINT4)0; for(i = 0;i < 4;i++) { ptr = buf; count = 0; *ptr = '\0'; while(*ip_str != '.' && *ip_str != '\0' && count < 4) { if(!isdigit(*ip_str)) { return((UINT4)0); } *ptr++ = *ip_str++; count++; } if(count >= 4 || count == 0) { return((UINT4)0); } *ptr = '\0'; cur_byte = atoi(buf); if(cur_byte < 0 || cur_byte > 255) { return((UINT4)0); } ip_str++; ipaddr = ipaddr << 8 | (UINT4)cur_byte; } return(ipaddr); } /************************************************************************* * * Function: req2str * req2strp * * Purpose: Return an IP address in standard dot notation, * followed by / port . id, for the provided authreq * *************************************************************************/ char * req2str(buffer,authreq) char *buffer; AUTH_REQ *authreq; { int addr_byte[4]; int i; UINT4 xbyte; UINT4 ipaddr; if (buffer == (char *)NULL) { return buffer; } if (authreq == (AUTH_REQ *)NULL) { memcpy(buffer,"(unidentified)",15); return (buffer); } ipaddr = authreq->ipaddr; for(i = 0;i < 4;i++) { xbyte = ipaddr >> (i*8); xbyte = xbyte & (UINT4)0x000000FF; addr_byte[i] = xbyte; } sprintf(buffer, "%u.%u.%u.%u/%u.%u", addr_byte[3], addr_byte[2], addr_byte[1], addr_byte[0], authreq->udp_port, authreq->id); return(buffer); } char * req2strp(authreq) AUTH_REQ *authreq; { static char buffer[32]; return req2str(buffer,authreq); } /************************************************************************* * * Function: bufalloc * * Purpose: Allocate memory for use by a buffer * *************************************************************************/ char * bufalloc(size,where) int size; char *where; { extern int hmembuf; extern int nmembuf; extern int tmembuf; extern int debug_mem; char *buf; void rad_exit(); if((buf = (char *)malloc((unsigned)size)) == (char *)NULL) { log_err("%s: fatal system error: out of memory, exiting\n",where); rad_exit(-1); } /* no need to zero buffer since we'll be copying into it */ nmembuf++; tmembuf++; if (nmembuf > hmembuf) { hmembuf = nmembuf; } if (debug_mem) { log_err("called bufalloc(%d,%s) = %x %d\n",size,where,(int)buf,nmembuf); } return buf; } /************************************************************************* * * Function: buffree * * Purpose: Release the memory allocated by bufalloc(); * *************************************************************************/ void buffree(buf,where) char *buf; char *where; { extern int nmembuf; extern int debug_mem; if (debug_mem) { log_err("called buffree(%x,%s) = %d\n",(int)buf,where,nmembuf); } if (buf == (char *)NULL) { log_err("%s called buffree with NULL pointer\n",where); } else { free(buf); nmembuf--; } /* calling routine took care to zero buffer if it had anything sensitive */ } /************************************************************************* * * Function: pairalloc * * Purpose: Allocate memory for VALUE_PAIR * *************************************************************************/ VALUE_PAIR * pairalloc(where) char *where; { extern int hmempair; extern int nmempair; extern int tmempair; VALUE_PAIR *pair; void rad_exit(); if((pair = (VALUE_PAIR *)malloc(sizeof(VALUE_PAIR))) == (VALUE_PAIR *)NULL) { log_err("%s: fatal system error: out of memory, exiting\n",where); rad_exit(-1); } memset(pair,0,sizeof(VALUE_PAIR)); pair->next = (VALUE_PAIR *)NULL; nmempair++; tmempair++; if (nmempair > hmempair) { hmempair = nmempair; } return pair; } /************************************************************************* * * Function: pairfree * * Purpose: Release the memory used by a list of attribute-value * pairs. * *************************************************************************/ void pairfree(pair,where) VALUE_PAIR *pair; char *where; { extern int nmempair; VALUE_PAIR *next; while(pair != (VALUE_PAIR *)NULL) { next = pair->next; memset(pair,0,sizeof(VALUE_PAIR)); free(pair); pair = next; nmempair--; } } /************************************************************************* * * Function: peeralloc * * Purpose: Allocate memory for PEER * *************************************************************************/ PEER * peeralloc(where) char *where; { extern int hmempeer; extern int nmempeer; extern int tmempeer; PEER *peer; void rad_exit(); if((peer = (PEER *)malloc(sizeof(PEER))) == (PEER *)NULL) { log_err("%s: fatal system error: out of memory, exiting\n", where); rad_exit(-1); } memset(peer,0,sizeof(PEER)); peer->next = (PEER *)NULL; nmempeer++; tmempeer++; if (nmempeer > hmempeer) { hmempeer = nmempeer; } return peer; } /************************************************************************* * * Function: peerfree * * Purpose: Release the memory used by a PEER structure * *************************************************************************/ void peerfree(peer,where) PEER *peer; char *where; { extern int nmempeer; void reqfree(); if (peer == (PEER *)NULL) { log_err("%s called peerfree with NULL pointer\n",where); } else { if (peer->next != (PEER *)NULL) { DEBUG("%s called peerfree with live next pointer\n", where); } memset(peer,0,sizeof(PEER)); free(peer); nmempeer--; } } /************************************************************************* * * Function: reqalloc * * Purpose: Allocate memory for use by an AUTH_REQ structure * *************************************************************************/ AUTH_REQ * reqalloc(where) char *where; { extern int hmemreq; extern int nmemreq; extern int tmemreq; extern int debug_mem; AUTH_REQ *authreq; void rad_exit(); if((authreq = (AUTH_REQ *)malloc(sizeof(AUTH_REQ))) == (AUTH_REQ *)NULL) { log_err("%s: fatal system error: out of memory, exiting\n",where); rad_exit(-1); } memset(authreq,0,sizeof(AUTH_REQ)); authreq->request = (VALUE_PAIR *)NULL; authreq->next = (AUTH_REQ *)NULL; authreq->packet = (char *)NULL; nmemreq++; tmemreq++; if (nmemreq > hmemreq) { hmemreq = nmemreq; } if (debug_mem) { log_err("called reqalloc(%s) = %x %d\n",where,(int)authreq,nmemreq); } return authreq; } /************************************************************************* * * Function: reqfree * * Purpose: Release the memory used by an AUTH_REQ structure * *************************************************************************/ void reqfree(authreq,where) AUTH_REQ *authreq; char *where; { extern int nmemreq; extern int debug_mem; if (debug_mem) { log_err("called reqfree(%x,%s) = %d\n",(int)authreq,where,nmemreq); } if (authreq == (AUTH_REQ *)NULL) { log_err("%s called reqfree with NULL pointer\n",where); } else { pairfree(authreq->request,where); if (authreq->packet != (char *) NULL) { buffree(authreq->packet,where); } memset(authreq, 0, sizeof(AUTH_REQ)); free(authreq); nmemreq--; } } void memreport() { extern int nmembuf,hmembuf,tmembuf, nmempair,hmempair,tmempair, nmempeer,hmempeer,tmempeer, hmemreq,nmemreq,tmemreq; log_err("memory usage = pair %d/%d/%d peer %d/%d/%d req %d/%d/%d buf %d/%d/%d\n", nmempair,hmempair,tmempair, nmempeer,hmempeer,tmempeer, nmemreq,hmemreq,tmemreq, nmembuf,hmembuf,tmembuf ); } /************************************************************************* * * Function: fprint_attr_val * * Purpose: Write a printable version of the attribute-value * pair to the supplied File. * *************************************************************************/ void fprint_attr_val(fd, pair) FILE *fd; VALUE_PAIR *pair; { DICT_VALUE *dict_valget(); DICT_VALUE *dval; char buffer[32]; char prtbuf[1060]; int len; u_char *ptr; void fprint_attr_putc(); void ipaddr2str(); switch(pair->type) { case PW_TYPE_STRING: sprintf(prtbuf, "%s = \"", pair->name); ptr = (u_char *)pair->strvalue; len = pair->lvalue; while(len-- > 0) { if(!(isprint(*ptr))) { sprintf(buffer, "\\%03o", *ptr); strcat(prtbuf, buffer); } else { fprint_attr_putc(*ptr, prtbuf); } ptr++; } fprint_attr_putc('"', prtbuf); break; case PW_TYPE_INTEGER: dval = dict_valget(pair->lvalue, pair->name); if(dval != (DICT_VALUE *)NULL) { sprintf(prtbuf, "%s = %s", pair->name, dval->name); } else { sprintf(prtbuf, "%s = %ld", pair->name, pair->lvalue); } break; case PW_TYPE_IPADDR: ipaddr2str(buffer, pair->lvalue); sprintf(prtbuf, "%s = %s", pair->name, buffer); break; case PW_TYPE_DATE: strftime(buffer, sizeof(buffer), "%b %e %Y", gmtime((time_t *)&pair->lvalue)); sprintf(prtbuf, "%s = \"%s\"", pair->name, buffer); break; default: sprintf(prtbuf, "Unknown type %d", pair->type); break; } if (fd == (FILE *)-1) { /* * send to debug log */ log_debug("%s\n", prtbuf); } else { fputs(prtbuf, fd); } } void fprint_attr_putc(cc, buf) u_char cc; u_char * buf; { int len; len = strlen((const char *)buf); buf[len] = cc; buf[len+1] = (u_char)0; } /************************************************************************* * * Function: hexdump * * Purpose: log buffer in hex * *************************************************************************/ void hexdump(buf,n) u_char *buf; int n; { int i; int j; char s[64]; if (n > 200) { n = 200; } s[48] = '\n'; s[48] = '\0'; for (i = 0; i < n; i++) { j = i & 0x0f; sprintf(&s[3*j],"%02x ",(int)buf[i]); if (j == 15) { log_debug("%s\n",s); } } if (n > 0 && j < 15) { s[3*j+3] = '\n'; s[3*j+3] = '\0'; log_debug("%s\n",s); } }