X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/46f6e51d596cb47c718baa3959c2e9bb28c5e0c1..8f94d68a09e1103353cc7d1133d6dfdf7d5a920d:/print-radius.c diff --git a/print-radius.c b/print-radius.c index 9cf4a919..ca3526bb 100644 --- a/print-radius.c +++ b/print-radius.c @@ -1,3 +1,24 @@ +/* + * Copyright (C) 2000 Alfredo Andres Omella. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. The names of the authors may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ /* * Radius printer routines as specified on: * @@ -16,23 +37,23 @@ * RFC 2869: * "RADIUS Extensions" * - * Alfredo Andres Omella (aandres@mfom.es) v0.1 2000/09/15 + * Alfredo Andres Omella (aandres@s21sec.com) v0.1 2000/09/15 * - * TODO: Among other things to print ok MacIntosh and Vendor values + * TODO: Among other things to print ok MacIntosh and Vendor values */ #ifndef lint static const char rcsid[] = - "$Id: print-radius.c,v 1.2 2000-10-08 08:48:48 guy Exp $"; + "$Id: print-radius.c,v 1.19 2002-12-11 07:14:07 guy Exp $"; #endif #ifdef HAVE_CONFIG_H #include "config.h" #endif -#include +#include -#include +#include #include @@ -40,9 +61,6 @@ static const char rcsid[] = #include "addrtoname.h" #include "extract.h" -#include "ip.h" -#include "udp.h" - #define TAM_SIZE(x) (sizeof(x)/sizeof(x[0]) ) #define PRINT_HEX(bytes_len, ptr_data) \ @@ -112,32 +130,33 @@ static void print_attr_time(register u_char *, u_int, u_short); static void print_attr_strange(register u_char *, u_int, u_short); -struct radius_hdr { u_char code; /* Radius packet code */ - u_char id; /* Radius packet id */ - u_short len; /* Radius total length */ - u_char auth[16]; /* Authenticator */ +struct radius_hdr { u_int8_t code; /* Radius packet code */ + u_int8_t id; /* Radius packet id */ + u_int16_t len; /* Radius total length */ + u_int8_t auth[16]; /* Authenticator */ }; +#define MIN_RADIUS_LEN 20 -struct radius_attr { u_char type; /* Attribute type */ - u_char len; /* Attribute length */ +struct radius_attr { u_int8_t type; /* Attribute type */ + u_int8_t len; /* Attribute length */ }; -/* Service-Type Attribute standard values */ +/* Service-Type Attribute standard values */ static const char *serv_type[]={ NULL, "Login", - "Framed", + "Framed", "Callback Login", "Callback Framed", "Outbound", "Administrative", - "NAS Prompt", + "NAS Prompt", "Authenticate Only", "Callback NAS Prompt", "Call Check", "Callback Administrative", - }; + }; /* Framed-Protocol Attribute standard values */ static const char *frm_proto[]={ NULL, @@ -147,14 +166,14 @@ static const char *frm_proto[]={ NULL, "Gandalf proprietary", "Xylogics IPX/SLIP", "X.75 Synchronous", - }; + }; /* Framed-Routing Attribute standard values */ static const char *frm_routing[]={ "None", "Send", "Listen", "Send&Listen", - }; + }; /* Framed-Compression Attribute standard values */ static const char *frm_comp[]={ "None", @@ -202,7 +221,7 @@ static const char *nas_port_type[]={ "Async", "Cable", "Wireless - Other", "Wireless - IEEE 802.11", - }; + }; /* Acct-Status-Type Accounting Attribute standard values */ static const char *acct_status[]={ NULL, @@ -267,7 +286,7 @@ static const char *tunnel_type[]={ NULL, "DVS", "IP-in-IP Tunneling", }; - + /* Tunnel-Medium-Type Attribute standard values */ static const char *tunnel_medium[]={ NULL, "IPv4", @@ -298,9 +317,9 @@ static const char *arap_zone[]={ NULL, static const char *prompt[]={ "No Echo", "Echo", }; - - -struct attrtype { char *name; /* Attribute name */ + + +struct attrtype { const char *name; /* Attribute name */ const char **subtypes; /* Standard Values (if any) */ u_char siz_subtypes; /* Size of total standard values */ u_char first_subtype; /* First standard value is 0 or 1 */ @@ -313,23 +332,23 @@ struct attrtype { char *name; /* Attribute name */ { "CHAP-Pass", NULL, 0, 0, NULL }, { "NAS_ipaddr", NULL, 0, 0, print_attr_address }, { "NAS_port", NULL, 0, 0, print_attr_num }, - { "Service_type", serv_type, TAM_SIZE(serv_type)-1, 1, print_attr_num }, + { "Service_type", serv_type, TAM_SIZE(serv_type)-1, 1, print_attr_num }, { "Framed_proto", frm_proto, TAM_SIZE(frm_proto)-1, 1, print_attr_num }, { "Framed_ipaddr", NULL, 0, 0, print_attr_address }, { "Framed_ipnet", NULL, 0, 0, print_attr_address }, - { "Framed_routing", frm_routing, TAM_SIZE(frm_routing), 0, - print_attr_num }, + { "Framed_routing", frm_routing, TAM_SIZE(frm_routing), 0, + print_attr_num }, { "Filter_id", NULL, 0, 0, print_attr_string }, { "Framed_mtu", NULL, 0, 0, print_attr_num }, { "Framed_compress", frm_comp, TAM_SIZE(frm_comp), 0, print_attr_num }, { "Login_iphost", NULL, 0, 0, print_attr_address }, { "Login_service", login_serv, TAM_SIZE(login_serv), 0, print_attr_num }, - { "Login_TCP_port", NULL, 0, 0, print_attr_num }, -/*17*/ { "Unassigned", NULL, 0, 0, NULL }, + { "Login_TCP_port", NULL, 0, 0, print_attr_num }, +/*17*/ { "Unassigned", NULL, 0, 0, NULL }, { "Reply", NULL, 0, 0, print_attr_string }, { "Callback-number", NULL, 0, 0, print_attr_string }, { "Callback-id", NULL, 0, 0, print_attr_string }, -/*21*/ { "Unassigned", NULL, 0, 0, NULL }, +/*21*/ { "Unassigned", NULL, 0, 0, NULL }, { "Framed_route", NULL, 0, 0, print_attr_string }, { "Framed_ipx_net", NULL, 0, 0, print_attr_num }, { "State", NULL, 0, 0, print_attr_string }, @@ -339,7 +358,7 @@ struct attrtype { char *name; /* Attribute name */ { "Idle_timeout", NULL, 0, 0, print_attr_num }, { "Term_action", term_action, TAM_SIZE(term_action), 0, print_attr_num }, { "Called_station", NULL, 0, 0, print_attr_string }, - { "Calling_station", NULL, 0, 0, print_attr_string }, + { "Calling_station", NULL, 0, 0, print_attr_string }, { "NAS_id", NULL, 0, 0, print_attr_string }, { "Proxy_state", NULL, 0, 0, print_attr_string }, { "Login_LAT_service", NULL, 0, 0, print_attr_string }, @@ -368,13 +387,13 @@ struct attrtype { char *name; /* Attribute name */ /*57*/ { "Unassigned", NULL, 0, 0, NULL }, /*58*/ { "Unassigned", NULL, 0, 0, NULL }, /*59*/ { "Unassigned", NULL, 0, 0, NULL }, - { "CHAP_challenge", NULL, 0, 0, print_attr_string }, - { "NAS_port_type", nas_port_type, TAM_SIZE(nas_port_type), 0, + { "CHAP_challenge", NULL, 0, 0, print_attr_string }, + { "NAS_port_type", nas_port_type, TAM_SIZE(nas_port_type), 0, print_attr_num }, { "Port_limit", NULL, 0, 0, print_attr_num }, /*63*/ { "Login_LAT_port", NULL, 0, 0, print_attr_string }, { "Tunnel_type", tunnel_type, TAM_SIZE(tunnel_type)-1, 1, print_attr_num }, - { "Tunnel_medium", tunnel_medium, TAM_SIZE(tunnel_medium)-1, 1, + { "Tunnel_medium", tunnel_medium, TAM_SIZE(tunnel_medium)-1, 1, print_attr_num }, { "Tunnel_client_end", NULL, 0, 0, print_attr_string }, { "Tunnel_server_end", NULL, 0, 0, print_attr_string }, @@ -382,7 +401,7 @@ struct attrtype { char *name; /* Attribute name */ { "Tunnel_pass", NULL, 0, 0, print_attr_string }, { "ARAP_pass", NULL, 0, 0, print_attr_strange }, { "ARAP_feature", NULL, 0, 0, print_attr_strange }, -/*72*/ { "ARAP_zone_acces", arap_zone, TAM_SIZE(arap_zone)-1, 1, +/*72*/ { "ARAP_zone_acces", arap_zone, TAM_SIZE(arap_zone)-1, 1, print_attr_num }, { "ARAP_security", NULL, 0, 0, print_attr_string }, { "ARAP_security_data", NULL, 0, 0, print_attr_string }, @@ -405,7 +424,7 @@ struct attrtype { char *name; /* Attribute name */ { "Tunnel_server_auth_id", NULL, 0, 0, print_attr_string }, /*92*/ { "Unassigned", NULL, 0, 0, NULL }, /*93*/ { "Unassigned", NULL, 0, 0, NULL } - }; + }; /*****************************/ @@ -419,9 +438,9 @@ static void print_attr_string(register u_char *data, u_int length, u_short attr_code ) { register u_int i; - + TCHECK2(data[0],length); - + printf("{"); switch(attr_code) { @@ -452,12 +471,12 @@ print_attr_string(register u_char *data, u_int length, u_short attr_code ) printf("%c",(*data < 32 || *data > 128) ? '.' : *data ); printf("}"); - + return; - + trunc: printf("|radius"); -} +} /******************************/ @@ -470,31 +489,42 @@ print_attr_string(register u_char *data, u_int length, u_short attr_code ) static void print_attr_num(register u_char *data, u_int length, u_short attr_code ) { + u_int8_t tag; u_int32_t timeout; - + + if (length != 4) + { + printf("{length %u != 4}", length); + return; + } + TCHECK2(data[0],4); /* This attribute has standard values */ - if (attr_type[attr_code].siz_subtypes) + if (attr_type[attr_code].siz_subtypes) { static const char **table; u_int32_t data_value; table = attr_type[attr_code].subtypes; - + if ( (attr_code == TUNNEL_TYPE) || (attr_code == TUNNEL_MEDIUM) ) { if (!*data) printf("{Tag[Unused]"); else printf("{Tag[%d]", *data); - data_value = EXTRACT_24BITS(++data); + data++; + data_value = EXTRACT_24BITS(data); } else - data_value = EXTRACT_32BITS(++data); - if ( data_value <= (attr_type[attr_code].siz_subtypes - 1 + - attr_type[attr_code].first_subtype) ) + { + data_value = EXTRACT_32BITS(data); + } + if ( data_value <= (u_int32_t)(attr_type[attr_code].siz_subtypes - 1 + + attr_type[attr_code].first_subtype) && + data_value >= attr_type[attr_code].first_subtype ) printf("{%s}",table[data_value]); else - printf("{#%d}",data_value); + printf("{#%u}",data_value); } else { @@ -504,7 +534,7 @@ print_attr_num(register u_char *data, u_int length, u_short attr_code ) if (EXTRACT_32BITS( data) == 0xFFFFFFFE ) printf("{NAS_select}"); else - printf("{%d}",EXTRACT_32BITS( data) ); + printf("{%d}",EXTRACT_32BITS( data) ); break; case SESSION_TIMEOUT: @@ -518,46 +548,48 @@ print_attr_num(register u_char *data, u_int length, u_short attr_code ) else { if ( timeout < 3600 ) - printf( "{%02d:%02d min}", + printf( "{%02d:%02d min}", timeout / 60, timeout % 60); else printf( "{%02d:%02d:%02d hours}", - timeout / 3600, (timeout % 3600) / 60, + timeout / 3600, (timeout % 3600) / 60, timeout % 60); } break; case FRM_ATALK_LINK: - if (EXTRACT_32BITS(data) ) + if (EXTRACT_32BITS(data) ) printf("{%d}",EXTRACT_32BITS(data) ); else printf("{Unnumbered}" ); break; - + case FRM_ATALK_NETWORK: - if (EXTRACT_32BITS(data) ) + if (EXTRACT_32BITS(data) ) printf("{%d}",EXTRACT_32BITS(data) ); else - printf("{NAS_assign}" ); + printf("{NAS_assign}" ); break; case TUNNEL_PREFERENCE: - if (!*data) - printf("{Tag[Unused] %d}",EXTRACT_24BITS(++data) ); + tag = *data; + data++; + if (tag == 0) + printf("{Tag[Unused] %d}",EXTRACT_24BITS(data) ); else - printf("{Tag[%d] %d}", *data, EXTRACT_24BITS(++data) ); + printf("{Tag[%d] %d}", tag, EXTRACT_24BITS(data) ); break; default: printf("{%d}",EXTRACT_32BITS( data) ); break; - + } /* switch */ - + } /* if-else */ return; - + trunc: printf("|radius}"); } @@ -573,8 +605,14 @@ print_attr_num(register u_char *data, u_int length, u_short attr_code ) static void print_attr_address(register u_char *data, u_int length, u_short attr_code ) { + if (length != 4) + { + printf("{length %u != 4}", length); + return; + } + TCHECK2(data[0],4); - + switch(attr_code) { case FRM_IPADDR: @@ -587,14 +625,14 @@ print_attr_address(register u_char *data, u_int length, u_short attr_code ) else printf("{%s}",ipaddr_string(data)); break; - + default: printf("{%s}",ipaddr_string(data) ); break; } - + return; - + trunc: printf("{|radius}"); } @@ -608,18 +646,31 @@ print_attr_address(register u_char *data, u_int length, u_short attr_code ) /*************************************/ /* Returns nothing. */ /*************************************/ -static void print_attr_time(register u_char *data, u_int length, u_short attr_code) +static void print_attr_time(register u_char *data, u_int length, u_short attr_code _U_) { + time_t attr_time; + char string[26]; + + if (length != 4) + { + printf("{length %u != 4}", length); + return; + } + TCHECK2(data[0],4); - - printf("{%s}", ctime( ((const time_t *)EXTRACT_32BITS(data) )) ); + + attr_time = EXTRACT_32BITS(data); + strlcpy(string, ctime(&attr_time), sizeof(string)); + /* Get rid of the newline */ + string[24] = '\0'; + printf("{%.24s}", string); return; - + trunc: printf("{|radius}"); } - + /***********************************/ /* Print an attribute of 'strange' */ /* data format pointed by 'data' */ @@ -629,48 +680,71 @@ static void print_attr_time(register u_char *data, u_int length, u_short attr_co /***********************************/ static void print_attr_strange(register u_char *data, u_int length, u_short attr_code) { - u_short len_data = 8; - + u_short len_data; + switch(attr_code) { case ARAP_PASS: + if (length != 16) + { + printf("{length %u != 16}", length); + return; + } printf("{User_challenge["); TCHECK2(data[0],8); + len_data = 8; PRINT_HEX(len_data, data); printf("] User_resp["); TCHECK2(data[0],8); + len_data = 8; PRINT_HEX(len_data, data); printf("]}"); break; - + case ARAP_FEATURES: + if (length != 14) + { + printf("{length %u != 14}", length); + return; + } + TCHECK2(data[0],1); if (*data) printf("{User_can_change_pass"); else printf("{User_cant_change_pass"); - TCHECK2(data[0],1); data++; + TCHECK2(data[0],1); printf(" Min_pass_len[%d]",*data); + data++; printf(" Pass_created_at["); - TCHECK2(data[0],8); + TCHECK2(data[0],4); + len_data = 4; PRINT_HEX(len_data, data); printf("] Pass_expired_in["); - TCHECK2(data[0],8); + TCHECK2(data[0],4); + len_data = 4; PRINT_HEX(len_data, data); printf("] Current_time["); - TCHECK2(data[0],8); + len_data = 4; + TCHECK2(data[0],4); PRINT_HEX(len_data, data); printf("]}"); break; case ARAP_CHALLENGE_RESP: + if (length < 8) + { + printf("{length %u != 8}", length); + return; + } printf("{"); TCHECK2(data[0],8); + len_data = 8; PRINT_HEX(len_data, data); printf("}"); break; } - + trunc: printf("|radius}"); } @@ -678,19 +752,24 @@ static void print_attr_strange(register u_char *data, u_int length, u_short attr static void -radius_attr_print(register u_char *attr, u_int length) +radius_attr_print(register const u_char *attr, u_int length) { register const struct radius_attr *rad_attr = (struct radius_attr *)attr; - + if (length < 3) { printf(" [|radius]"); return; } - + printf(" Attr[ "); while (length > 0) { + if (rad_attr->len == 0) + { + printf("(zero-length attribute)"); + return; + } if ( rad_attr->len <= length ) { if ( !rad_attr->type || (rad_attr->type > (TAM_SIZE(attr_type)-1)) ) @@ -699,9 +778,13 @@ radius_attr_print(register u_char *attr, u_int length) { printf(" %s",attr_type[rad_attr->type].name); - if ( attr_type[rad_attr->type].print_func ) - (*attr_type[rad_attr->type].print_func)( ((char *)(rad_attr+1)), + if (rad_attr->len > 2) + { + if ( attr_type[rad_attr->type].print_func ) + (*attr_type[rad_attr->type].print_func)( + ((u_char *)(rad_attr+1)), rad_attr->len - 2, rad_attr->type); + } } } else @@ -712,7 +795,7 @@ radius_attr_print(register u_char *attr, u_int length) length-=(rad_attr->len); rad_attr = (struct radius_attr *)( ((char *)(rad_attr))+rad_attr->len); } - + printf(" ]"); } @@ -721,62 +804,82 @@ void radius_print(const u_char *dat, u_int length) { register const struct radius_hdr *rad; - register int i; - - i = min(length, snapend - dat) - sizeof(*rad); + register u_int i; + u_int len; + + if (snapend < dat) + { + printf(" [|radius]"); + return; + } + i = snapend - dat; + if (i > length) + i = length; - if (i < 0) + if (i < MIN_RADIUS_LEN) { printf(" [|radius]"); return; } rad = (struct radius_hdr *)dat; - - switch (rad->code) + len = EXTRACT_16BITS(&rad->len); + + if (len < MIN_RADIUS_LEN) + { + printf(" [|radius]"); + return; + } + + if (len < i) + i = len; + + i -= MIN_RADIUS_LEN; + + switch (rad->code) { case RADCMD_ACCESS_REQ: - printf(" rad-access-req %d", length); + printf(" rad-access-req %u", length); break; case RADCMD_ACCESS_ACC: - printf(" rad-access-accept %d", length); + printf(" rad-access-accept %u", length); break; case RADCMD_ACCESS_REJ: - printf(" rad-access-reject %d", length); + printf(" rad-access-reject %u", length); break; case RADCMD_ACCOUN_REQ: - printf(" rad-account-req %d", length); + printf(" rad-account-req %u", length); break; case RADCMD_ACCOUN_RES: - printf(" rad-account-resp %d", length); + printf(" rad-account-resp %u", length); break; case RADCMD_ACCESS_CHA: - printf(" rad-access-cha %d", length); + printf(" rad-access-cha %u", length); break; case RADCMD_STATUS_SER: - printf(" rad-status-serv %d", length); + printf(" rad-status-serv %u", length); break; case RADCMD_STATUS_CLI: - printf(" rad-status-cli %d", length); + printf(" rad-status-cli %u", length); break; case RADCMD_RESERVED: - printf(" rad-reserved %d", length); + printf(" rad-reserved %u", length); break; default: - printf(" rad-#%d %d", rad->code, length); + printf(" rad-#%u %u", rad->code, length); break; } - printf(" [id %d]", rad->id); - + printf(" [id %u]", rad->id); + if (i) - radius_attr_print( ((char *)(rad+1)), i); + radius_attr_print( dat + MIN_RADIUS_LEN, i); }