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Diffstat (limited to 'sbin/atm/ilmid/ilmid.c')
| -rw-r--r-- | sbin/atm/ilmid/ilmid.c | 2725 |
1 files changed, 0 insertions, 2725 deletions
diff --git a/sbin/atm/ilmid/ilmid.c b/sbin/atm/ilmid/ilmid.c deleted file mode 100644 index 4a1e5ec..0000000 --- a/sbin/atm/ilmid/ilmid.c +++ /dev/null @@ -1,2725 +0,0 @@ -/* - * - * =================================== - * HARP | Host ATM Research Platform - * =================================== - * - * - * This Host ATM Research Platform ("HARP") file (the "Software") is - * made available by Network Computing Services, Inc. ("NetworkCS") - * "AS IS". NetworkCS does not provide maintenance, improvements or - * support of any kind. - * - * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, - * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE - * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE. - * In no event shall NetworkCS be responsible for any damages, including - * but not limited to consequential damages, arising from or relating to - * any use of the Software or related support. - * - * Copyright 1994-1998 Network Computing Services, Inc. - * - * Copies of this Software may be made, however, the above copyright - * notice must be reproduced on all copies. - */ - -/* - * User utilities - * -------------- - * - * Implement very minimal ILMI address registration. - * - * Implement very crude and basic support for "cracking" and - * "encoding" SNMP PDU's to support ILMI prefix and NSAP address - * registration. Code is not robust nor is it meant to provide any - * "real" SNMP support. Much of the code expects predetermined values - * and will fail if anything else is found. Much of the "encoding" is - * done with pre-computed PDU's. - * - * See "The Simple Book", Marshall T. Rose, particularly chapter 5, - * for ASN and BER information. - * - */ - -#include <sys/param.h> -#include <sys/socket.h> -#include <sys/sockio.h> -#include <net/if.h> -#include <netinet/in.h> -#include <netatm/port.h> -#include <netatm/atm.h> -#include <netatm/atm_if.h> -#include <netatm/atm_sigmgr.h> -#include <netatm/atm_sap.h> -#include <netatm/atm_sys.h> -#include <netatm/atm_ioctl.h> -#include <dev/hfa/fore_aali.h> -#include <dev/hfa/fore_slave.h> -#include <dev/hfa/fore_stats.h> - -#include <err.h> -#include <errno.h> -#include <libatm.h> -#include <libgen.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <syslog.h> -#include <time.h> -#include <unistd.h> -#include <ctype.h> - -#ifndef lint -__RCSID("@(#) $FreeBSD$"); -#endif - - -#define MAX_LEN 9180 - -#define MAX_UNITS 8 - -/* - * Define some ASN types - */ -#define ASN_INTEGER 0x02 -#define ASN_OCTET 0x04 -#define ASN_NULL 0x05 -#define ASN_OBJID 0x06 -#define ASN_SEQUENCE 0x30 -#define ASN_IPADDR 0x40 -#define ASN_TIMESTAMP 0x43 - -static const char *Var_Types[] = { - "", - "", - "ASN_INTEGER", - "", - "ASN_OCTET", - "ASN_NULL", - "ASN_OBJID" -}; - -/* - * Define SNMP PDU types - */ -#define PDU_TYPE_GET 0xA0 -#define PDU_TYPE_GETNEXT 0xA1 -#define PDU_TYPE_GETRESP 0xA2 -#define PDU_TYPE_SET 0xA3 -#define PDU_TYPE_TRAP 0xA4 - -static const char *const PDU_Types[] = { - "GET REQUEST", - "GETNEXT REQUEST", - "GET RESPONSE", - "SET REQUEST", - "TRAP", - " ?? ", - " ??? " -}; - -/* - * Define TRAP codes - */ -#define TRAP_COLDSTART 0 -#define TRAP_WARMSTART 1 -#define TRAP_LINKDOWN 2 -#define TRAP_LINKUP 3 -#define TRAP_AUTHFAIL 4 -#define TRAP_EGPLOSS 5 -#define TRAP_ENTERPRISE 6 - -/* - * Define SNMP Version numbers - */ -#define SNMP_VERSION_1 1 -#define SNMP_VERSION_2 2 - -/* - * SNMP Error-status values - */ -#define SNMP_ERR_NOERROR 0 -#define SNMP_ERR_TOOBIG 1 -#define SNMP_ERR_NOSUCHNAME 2 -#define SNMP_ERR_BADVALUE 3 -#define SNMP_ERR_READONLY 4 -#define SNMP_ERR_GENERR 5 - -/* - * Max string length for Variable - */ -#define STRLEN 128 - -/* - * Unknown variable - */ -#define VAR_UNKNOWN -1 - -/* - * Define our internal representation of an OBJECT IDENTIFIER - */ -struct objid { - int oid[128]; -}; -typedef struct objid Objid; - -/* - * Define a Veriable classso that we can handle multiple GET/SET's - * per PDU. - */ -typedef struct variable Variable; -struct variable { - Objid oid; - int type; - union { - int ival; /* INTEGER/TIMESTAMP */ - Objid oval; /* OBJID */ - long aval; /* IPADDR */ - char sval[STRLEN]; /* OCTET */ - } var; - Variable *next; -}; - -/* - * Every SNMP PDU has the first four fields of this header. The only type - * which doesn't have the last three fields is the TRAP type. - */ -struct snmp_header { - int pdulen; - int version; - char community[64]; - int pdutype; - - /* GET/GETNEXT/GETRESP/SET */ - int reqid; - int error; - int erridx; - - /* TRAP */ - Objid enterprise; - int ipaddr; - int generic_trap; - int specific_trap; - - int varlen; - Variable *head, - *tail; -}; -typedef struct snmp_header Snmp_Header; - -Snmp_Header *ColdStart_Header; -Snmp_Header *PDU_Header; - -/* - * Define some OBJET IDENTIFIERS that we'll try to reply to: - * - * sysUpTime: number of time ticks since this deamon came up - * netpfx_oid: network prefix table - * unitype: is this a PRIVATE or PUBLIC network link - * univer: which version of UNI are we running - * devtype: is this a USER or NODE ATM device - * setprefix: used when the switch wants to tell us its NSAP prefix - * foresiggrp: FORE specific Objid we see alot of (being connected to FORE - * switches...) - */ -Objid Objids[] = { -#define SYS_OBJID 0 - {{ 8, 43, 6, 1, 2, 1, 1, 2, 0 }}, -#define UPTIME_OBJID 1 - {{ 8, 43, 6, 1, 2, 1, 1, 3, 0 }}, -#define PORT_OBJID 2 - {{ 12, 43, 6, 1, 4, 1, 353, 2, 1, 1, 1, 1, 0 }}, -#define IPNM_OBJID 3 - {{ 10, 43, 6, 1, 4, 1, 353, 2, 1, 2, 0 }}, -#define LAYER_OBJID 4 - {{ 12, 43, 6, 1, 4, 1, 353, 2, 2, 1, 1, 1, 0 }}, -#define MAXVCC_OBJID 5 - {{ 12, 43, 6, 1, 4, 1, 353, 2, 2, 1, 1, 3, 0 }}, -#define UNITYPE_OBJID 6 - {{ 12, 43, 6, 1, 4, 1, 353, 2, 2, 1, 1, 8, 0 }}, -#define UNIVER_OBJID 7 - {{ 12, 43, 6, 1, 4, 1, 353, 2, 2, 1, 1, 9, 0 }}, -#define DEVTYPE_OBJID 8 - {{ 12, 43, 6, 1, 4, 1, 353, 2, 2, 1, 1, 10, 0 }}, -#define ADDRESS_OBJID 9 - {{ 8, 43, 6, 1, 4, 1, 353, 2, 6 }}, -#define NETPFX_OBJID 10 - {{ 9, 43, 6, 1, 4, 1, 353, 2, 7, 1 }}, -#define MY_OBJID 11 - {{ 7, 43, 6, 1, 4, 1, 9999, 1 }}, -#define SETPFX_OBJID 12 /* ATM Forum says 1=valid, 2=invalid, not 0! */ - {{ 12, 43, 6, 1, 4, 1, 353, 2, 7, 1, 1, 3, 0 }}, -#define ENTERPRISE_OBJID 13 - {{ 8, 43, 6, 1, 4, 1, 3, 1, 1 }}, -#define ATMF_PORTID 14 - {{ 10, 43, 6, 1, 4, 1, 353, 2, 1, 4, 0 }}, -#define ATMF_SYSID 15 - {{ 12, 43, 6, 1, 4, 1, 353, 2, 1, 1, 1, 8, 0 }}, -#define MADGE_OBJECT1 16 /* I don't have a clue ... -RH */ - {{ 9, 43, 6, 1, 4, 1, 353, 2, 7, 99 }}, -}; - -#define NUM_OIDS (sizeof(Objids)/sizeof(Objid)) - -#define UNIVER_UNI20 1 -#define UNIVER_UNI30 2 -#define UNIVER_UNI31 3 -#define UNIVER_UNI40 4 -#define UNIVER_UNKNOWN 5 - -#define UNITYPE_PUBLIC 1 -#define UNITYPE_PRIVATE 2 - -#define DEVTYPE_USER 1 -#define DEVTYPE_NODE 2 - -/* For print_pdu() */ -#define PDU_SEND 1 -#define PDU_RECV 2 - -/* - * ILMI protocol states - */ -enum ilmi_states { - ILMI_UNKNOWN, /* Uninitialized */ - ILMI_COLDSTART, /* We need to send a COLD_START trap */ - ILMI_INIT, /* Ensure that switch has reset */ - ILMI_REG, /* Looking for SET message */ - ILMI_RUNNING /* Normal processing */ -}; - -static const char *ILMI_State[] = { - "UNKNOWN", - "COLDSTART", - "INIT", - "REG", - "RUNNING" -}; - -/* - * Our (incrementing) Request ID - */ -int Req_ID; - -/* - * Temporary buffer for building response packets. Should help ensure - * that we aren't accidently overwriting some other memory. - */ -u_char Resp_Buf[1024]; - -/* - * Copy the reponse into a buffer we can modify without - * changing the original... - */ -#define COPY_RESP(resp) \ - bcopy ( (resp), Resp_Buf, (resp)[0] + 1 ) - -int NUnits; - -/* - * fd for units which have seen a coldStart TRAP and are now exchaning SNMP requests - */ -int ilmi_fd[MAX_UNITS + 1]; -/* - * enum ilmi_states for this unit - */ -int ilmi_state[MAX_UNITS + 1]; -/* - * Local copy for HARP physical configuration information - */ -struct air_cfg_rsp Cfg[MAX_UNITS + 1]; -/* - * Local copy for HARP interface configuration information - */ -struct air_int_rsp Intf[MAX_UNITS + 1]; - -/* - * addressEntry table - */ -Objid addressEntry[MAX_UNITS + 1]; - -/* - * When this daemon started - */ -struct timeval starttime; - -int Debug_Level = 0; -int foregnd = 0; /* run in the foreground? */ - -char *progname; -char hostname[80]; - - /* File to write debug messages to */ -#define LOG_FILE "/var/log/ilmid" -FILE *Log; /* File descriptor for log messages */ - -static const char *Months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", - "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; - -/* - * function declarations - */ -static void write_timestamp (void); -static void hexdump (FILE *, u_int8_t *, int, char *); -static int asn_get_pdu_len (u_char **, int *); -static int asn_get_encoded (u_char **, int *); -static int asn_get_int (u_char **, int *); -static void asn_set_int (u_char **, int); -static void print_objid (Objid *); -static void asn_get_objid (u_char **, Objid *, int *); -static int asn_put_objid (u_char **, Objid *); -static void asn_get_octet (u_char **, char *, int *); -static void print_header (Snmp_Header *); -static void parse_oids (Snmp_Header *, u_char **); -static int oid_cmp (Objid *, Objid *); -static int oid_ncmp (Objid *, Objid *, int); -static int find_var (Variable *); -static int get_ticks (void); -static void build_pdu (Snmp_Header *, int); -static void free_pdu (Snmp_Header *); -static void print_pdu (int, int, Snmp_Header *, int, u_char *); -static void send_resp (int, Snmp_Header *, u_char *); -static void init_ilmi (void); -static void ilmi_open (void); -static void get_local_ip (int, long *); -static void set_prefix (Objid *, Snmp_Header *, int); -static void set_address (Snmp_Header *, int); -static void process_get (Snmp_Header *, int); -static int lmi_object_find (Variable *); -static int lmi_rcvcmd_getnext(Snmp_Header *, int); -static int lmi_rcvcmd_trap (Snmp_Header *, int); -static void ilmi_do_state (void); -static void Increment_DL (int); -static void Decrement_DL (int); - -static Snmp_Header * asn_get_header (u_char **); -static Snmp_Header * build_cold_start (void); -static Snmp_Header * build_generic_header (void); - -/* - * Write a syslog() style timestamp - * - * Write a syslog() style timestamp with month, day, time and hostname - * to the log file. - * - * Arguments: - * none - * - * Returns: - * none - * - */ -static void -write_timestamp (void) -{ - time_t clk; - struct tm *tm; - - clk = time ( (time_t)NULL ); - tm = localtime ( &clk ); - - if ( Log && Debug_Level > 1 ) - if ( Log != stderr ) - fprintf ( Log, "%.3s %2d %.2d:%.2d:%.2d %s: ", - Months[tm->tm_mon], tm->tm_mday, tm->tm_hour, tm->tm_min, - tm->tm_sec, hostname ); - - return; - -} - -/* - * Utility to pretty print buffer as hex dumps - * - * Arguments: - * out - file handle - * ptr - buffer pointer - * len - length to pretty print - * desc - output header - * - * Returns: - * none - * - */ -static void -hexdump (out, ptr, len, desc) - FILE * out; - u_int8_t * ptr; - int len; - char * desc; -{ - char line[17]; - int i, j; - - if (out == NULL) - out = stdout; - - if (desc != NULL) - fprintf(out, "[ %s (%d bytes)]\n", desc, len); - - bzero(line, sizeof(line)); - - for (i = 0, j = 0; i < len; i++) { - - if (j == 0) fprintf(out, "%04x: ", i); - if (j == 8) fprintf(out, "| "); - - fprintf(out, "%02x ", ptr[i]); - line[j] = isalnum(ptr[i]) ? ptr[i] : '.' ; - if (j == 15) { - fprintf(out, " |%16s|\n", line); - bzero(line, sizeof(line)); - j = 0; - } else - j++; - } - - if (j != 0) { - if (j <= 8) fprintf(out, " "); - for (; j < 16; j++) fprintf(out, " "); - fprintf(out, " |%-16s|\n", line); - } - fflush(out); - - return; -} - -/* - * Get lengths from PDU encodings - * - * Lengths are sometimes encoded as a single byte if the length - * is less the 127 but are more commonly encoded as one byte with - * the high bit set and the lower seven bits indicating the nuber - * of bytes which make up the length value. Trailing data is (to my - * knowledge) not 7-bit encoded. - * - * Arguments: - * bufp - pointer to buffer pointer - * plen - pointer to PDU length or NULL if not a concern - * - * Returns: - * bufp - updated buffer pointer - * plen - (possibly) adjusted pdu length - * <len> - decoded length - * - */ -static int -asn_get_pdu_len (u_char **bufp, int *plen) -{ - u_char *bp = *bufp; - int len = 0; - int i, b; - - b = *bp++; - if ( plen ) - (*plen)--; - if ( b & 0x80 ) { - for ( i = 0; i < (b & ~0x80); i++ ) { - len = len * 256 + *bp++; - if ( plen ) - (*plen)--; - } - } else - len = b; - - *bufp = bp; - return ( len ); -} - -/* - * Get an 7-bit encoded value. - * - * Get a value which is represented using a 7-bit encoding. The last - * byte in the stream has the high-bit clear. - * - * Arguments: - * bufp - pointer to the buffer pointer - * len - pointer to the buffer length - * - * Returns: - * bufp - updated buffer pointer - * len - updated buffer length - * <val> - value encoding represented - * - */ -static int -asn_get_encoded (u_char **bufp, int *len) -{ - u_char *bp = *bufp; - int val = 0; - int l = *len; - - /* - * Keep going while high bit is set - */ - do { - /* - * Each byte can represent 7 bits - */ - val = ( val << 7 ) + ( *bp & ~0x80 ); - l--; - } while ( *bp++ & 0x80 ); - - *bufp = bp; /* update buffer pointer */ - *len = l; /* update buffer length */ - - return ( val ); -} - -/* - * Get a BER encoded integer - * - * Intergers are encoded as one byte length followed by <length> data bytes - * - * Arguments: - * bufp - pointer to the buffer pointer - * plen - pointer to PDU length or NULL if not a concern - * - * Returns: - * bufp - updated buffer pointer - * plen - (possibly) updated PDU length - * <val> - value of encoded integer - * - */ -static int -asn_get_int (u_char **bufp, int *plen) -{ - int i; - int len; - int v = 0; - u_char *bp = *bufp; - - len = *bp++; - if ( plen ) - (*plen)--; - for ( i = 0; i < len; i++ ) { - v = (v * 256) + *bp++; - if ( plen ) - (*plen)--; - } - *bufp = bp; - return ( v ); -} - -/* - * Set a BER encoded integer - * - * Arguments: - * bufp - pointer to buffer pointer where we are to set int in - * val - integer value to set - * - * Returns: - * none - * <bufp> - updated buffer pointer - * - */ -static void -asn_set_int (u_char **bufp, int val) -{ - union { - int i; - u_char c[4]; - } u; - int len = sizeof(int); - size_t i = 0; - u_char *bp = *bufp; - - /* Check for special case where val == 0 */ - if ( val == 0 ) { - *bp++ = 1; - *bp++ = 0; - *bufp = bp; - return; - } - - u.i = htonl ( val ); - - while ( u.c[i] == 0 && i++ < sizeof(int) ) - len--; - - if ( u.c[i] > 0x7f ) { - i--; - len++; - } - - *bp++ = len; - bcopy ( (caddr_t)&u.c[sizeof(int)-len], bp, len ); - bp += len; - *bufp = bp; - - return; -} - -/* - * Utility to print an object identifier. - * - * Arguments: - * objid - pointer to objid representation - * - * Returns: - * none - * - */ -static void -print_objid (Objid *objid) -{ - int i; - - /* - * First oid coded as 40 * X + Y - */ - if ( Log ) { - write_timestamp(); - fprintf ( Log, ".%d.%d", objid->oid[1] / 40, - objid->oid[1] % 40 ); - } - for ( i = 2; i <= objid->oid[0]; i++ ) - if ( Log ) - fprintf ( Log, ".%d", objid->oid[i] ); - if ( Log ) - fprintf ( Log, "\n" ); - - return; -} - -/* - * Get Object Identifier - * - * Arguments: - * bufp - pointer to buffer pointer - * objid - pointer to objid buffer - * plen - pointer to PDU length or NULL of not a concern - * - * Returns: - * bufp - updated buffer pointer - * objid - internal representation of encoded objid - * plen - (possibly) adjusted PDU length - * - */ -static void -asn_get_objid (u_char **bufp, Objid *objid, int *plen) -{ - int len; - u_char *bp = *bufp; - int *ip = (int *)objid + 1; /* First byte will contain length */ - int oidlen = 0; - - len = *bp++; - if ( plen ) - (*plen)--; - while ( len ) { - *ip++ = asn_get_encoded ( &bp, &len ); - if ( plen ) - (*plen)--; - oidlen++; - } - objid->oid[0] = oidlen; - *bufp = bp; - - return; -} - -/* - * Put OBJID - assumes elements <= 16383 for two byte coding - * - */ -static int -asn_put_objid (u_char **bufp, Objid *objid) -{ - int len = 0; - u_char *bp = *bufp; - u_char *cpp; - int i; - - cpp = bp; - *bp++ = objid->oid[0]; - len++; - for ( i = 1; i <= objid->oid[0]; i++ ) { - u_int c = objid->oid[i]; - - while ( c > 127 ) { - *bp++ = ( ( c >> 7 ) & 0x7f ) | 0x80; - len++; - c &= 0x7f; /* XXX - assumption of two bytes */ - (*cpp)++; - } - *bp++ = c; - len++; - } - - *bufp = bp; - return ( len ); - -} - -/* - * Get OCTET STRING - * - * Octet strings are encoded as a 7-bit encoded length followed by <len> - * data bytes; - * - * Arguments: - * bufp - pointer to buffer pointer - * octet - pointer to octet buffer - * plen - pointer to PDU length - * - * Returns: - * bufp - updated buffer pointer - * octet - encoded Octet String - * plen - (possibly) adjusted PDU length - * - */ -static void -asn_get_octet (u_char **bufp, char *octet, int *plen) -{ - u_char *bp = *bufp; - int i = 0; - int len = 0; - - /* - * &i is really a dummy value here as we don't keep track - * of the ongoing buffer length - */ - len = asn_get_encoded ( &bp, &i ); - - for ( i = 0; i < len; i++ ) { - *octet++ = *bp++; - if ( plen ) - (*plen)--; - } - - *bufp = bp; - - return; - -} - -/* - * Utility to print SNMP PDU header information - * - * Arguments: - * Hdr - pointer to internal SNMP header structure - * - * Returns: - * none - * - */ -static void -print_header (Snmp_Header *Hdr) -{ - Variable *var; - - if ( Log ) { - write_timestamp(); - fprintf(Log, - " PDU Type: 0x%x (%s)\n" - " PDU len: %d\n" - " Version: %d\n" - " Community: \"%s\"\n", - Hdr->pdutype, PDU_Types[Hdr->pdutype & 7], - Hdr->pdulen, - Hdr->version + 1, - Hdr->community); - - if (Hdr->pdutype != PDU_TYPE_TRAP) { - write_timestamp(); - fprintf(Log, - " Req Id: 0x%x\n" - " Error: %d\n" - " Error Index: %d\n", - Hdr->reqid, - Hdr->error, - Hdr->erridx); - } - } - - var = Hdr->head; - while ( var ) { - if ( Log ) { - write_timestamp(); - fprintf ( Log, "Variable Type: %d", var->type ); - if ( Var_Types[var->type] ) - fprintf ( Log, " (%s)", Var_Types[var->type] ); - fprintf ( Log, "\n Object: "); - print_objid ( &var->oid ); - fprintf ( Log, " Value: "); - switch ( var->type ) { - case ASN_INTEGER: - fprintf ( Log, "%d (0x%x)\n", var->var.ival, var->var.ival ); - break; - case ASN_NULL: - fprintf ( Log, "NULL" ); - break; - default: - fprintf ( Log, "[0x%x]", var->type ); - break; - } - fprintf ( Log, "\n" ); - } - var = var->next; - } - - return; - -} - -/* - * Pull OID's from GET/SET message - * - * Arguments: - * h - pointer to Snmp_Header - * bp - pointer to input PDU - * - * Returns: - * none - * - */ -static void -parse_oids (Snmp_Header *h, u_char **bp) -{ - int len = h->varlen; - int sublen; - Variable *var; - u_char *bufp = *bp; - - while ( len > 0 ) { - if ( *bufp++ == ASN_SEQUENCE ) { - len--; - - /* Create new Variable instance */ - if ( ( var = (Variable *)malloc(sizeof(Variable)) ) == NULL ) - { - *bp = bufp; - return; - } - bzero(var, sizeof(Variable)); - /* Link to tail */ - if ( h->tail ) - h->tail->next = var; - /* Set head iff NULL */ - if ( h->head == NULL ) { - h->head = var; - } - /* Adjust tail */ - h->tail = var; - - /* Get length of variable sequence */ - sublen = asn_get_pdu_len ( &bufp, &len ); - /* Should be OBJID type */ - if ( *bufp++ != ASN_OBJID ) { - *bp = bufp; - return; - } - asn_get_objid ( (u_char **)&bufp, &var->oid, &len ); - var->type = *bufp++; - len--; - switch ( var->type ) { - case ASN_INTEGER: - var->var.ival = asn_get_int ( &bufp, &len ); - break; - case ASN_NULL: - bufp++; - len--; - break; - case ASN_OBJID: - asn_get_objid ( &bufp, &var->var.oval, &len ); - break; - case ASN_OCTET: - asn_get_octet ( &bufp, var->var.sval, &len ); - break; - default: - if ( Log ) { - write_timestamp(); - fprintf ( Log, "Unknown variable type: %d\n", - var->type ); - } - break; - } - var->next = NULL; - } else - break; - } - - *bp = bufp; - return; -} - -/* - * Crack the SNMP header - * - * Pull the PDU length, SNMP version, SNMP community and PDU type. - * If present, also pull out the Request ID, Error status, and Error - * index values. - * - * Arguments: - * bufp - pointer to buffer pointer - * - * Returns: - * bufp - updated buffer pointer - * - generated SNMP header - * - */ -static Snmp_Header * -asn_get_header (u_char **bufp) -{ - Snmp_Header *h; - u_char *bp = *bufp; - int len = 0; - int dummy = 0; - - /* - * Allocate memory to hold the SNMP header - */ - if ( ( h = (Snmp_Header *)malloc(sizeof(Snmp_Header)) ) == NULL ) - return ( (Snmp_Header *)NULL ); - - /* - * Ensure that we wipe the slate clean - */ - bzero(h, sizeof(Snmp_Header)); - - /* - * PDU has to start as SEQUENCE OF - */ - if ( *bp++ != ASN_SEQUENCE ) /* Class == Universial, f == 1, tag == SEQUENCE */ - return ( (Snmp_Header *)NULL ); - - /* - * Get the length of remaining PDU data - */ - h->pdulen = asn_get_pdu_len ( &bp, NULL ); - - /* - * We expect to find an integer encoding Version-1 - */ - if ( *bp++ != ASN_INTEGER ) { - return ( (Snmp_Header *)NULL ); - } - h->version = asn_get_int ( &bp, NULL ); - - /* - * After the version, we need the community name - */ - if ( *bp++ != ASN_OCTET ) { - return ( (Snmp_Header *)NULL ); - } - asn_get_octet ( &bp, h->community, NULL ); - - /* - * Single byte PDU type - */ - h->pdutype = *bp++; - - /* - * If this isn't a TRAP PDU, then look for the rest of the header - */ - if ( h->pdutype != PDU_TYPE_TRAP ) { /* TRAP uses different format */ - - (void) asn_get_pdu_len ( &bp, &dummy ); - - /* Request ID */ - if ( *bp++ != ASN_INTEGER ) { - free( h ); - return ( (Snmp_Header *)NULL ); - } - h->reqid = asn_get_int ( &bp, NULL ); - - /* Error Status */ - if ( *bp++ != ASN_INTEGER ) { - free ( h ); - return ( (Snmp_Header *)NULL ); - } - h->error = asn_get_int ( &bp, NULL ); - - /* Error Index */ - if ( *bp++ != ASN_INTEGER ) { - free ( h ); - return ( (Snmp_Header *)NULL ); - } - h->erridx = asn_get_int ( &bp, NULL ); - - /* Sequence of... */ - if ( *bp++ != ASN_SEQUENCE ) { - free ( h ); - return ( (Snmp_Header *)NULL ); - } - h->varlen = ( asn_get_pdu_len ( &bp, &len ) - 1 ); - h->varlen += ( len - 1 ); - - parse_oids ( h, &bp ); - } - - *bufp = bp; - - return ( h ); - -} - -/* - * Compare two internal OID representations - * - * Arguments: - * oid1 - Internal Object Identifier - * oid2 - Internal Object Identifier - * - * Returns: - * 0 - Objid's match - * 1 - Objid's don't match - * - */ -static int -oid_cmp (Objid *oid1, Objid *oid2) -{ - int i; - int len; - - /* - * Compare lengths - */ - if ( !(oid1->oid[0] == oid2->oid[0] ) ) - /* Different lengths */ - return ( 1 ); - - len = oid1->oid[0]; - - /* - * value by value compare - */ - for ( i = 1; i <= len; i++ ) { - if ( !(oid1->oid[i] == oid2->oid[i]) ) - /* values don't match */ - return ( 1 ); - } - - /* Objid's are identical */ - return ( 0 ); -} - -/* - * Compare two internal OID representations - * - * Arguments: - * oid1 - Internal Object Identifier - * oid2 - Internal Object Identifier - * len - Length of OID to compare - * - * Returns: - * 0 - Objid's match - * 1 - Objid's don't match - * - */ -static int -oid_ncmp (Objid *oid1, Objid *oid2, int len) -{ - int i; - - /* - * value by value compare - */ - for ( i = 1; i <= len; i++ ) { - if ( !(oid1->oid[i] == oid2->oid[i]) ) - /* values don't match */ - return ( 1 ); - } - - /* Objid's are identical */ - return ( 0 ); -} - -/* - * Find the index of an OBJID which matches this Variable instance. - * - * Arguments: - * var - pointer to Variable instance - * - * Returns: - * idx - index of matched Variable instance - * -1 - no matching Variable found - * - */ -static int -find_var (Variable *var) -{ - size_t i; - - for ( i = 0; i < NUM_OIDS; i++ ) - if ( oid_cmp ( &var->oid, &Objids[i] ) == 0 ) { - return ( i ); - } - - return ( -1 ); - -} - -/* - * Return the time process has been running as a number of ticks - * - * Arguments: - * none - * - * Returns: - * number of ticks - * - */ -static int -get_ticks (void) -{ - struct timeval timenow; - struct timeval timediff; - - (void) gettimeofday ( &timenow, NULL ); - /* - * Adjust for subtraction - */ - timenow.tv_sec--; - timenow.tv_usec += 1000000; - - /* - * Compute time since 'starttime' - */ - timediff.tv_sec = timenow.tv_sec - starttime.tv_sec; - timediff.tv_usec = timenow.tv_usec - starttime.tv_usec; - - /* - * Adjust difference timeval - */ - if ( timediff.tv_usec >= 1000000 ) { - timediff.tv_usec -= 1000000; - timediff.tv_sec++; - } - - /* - * Compute number of ticks - */ - return ( ( timediff.tv_sec * 100 ) + ( timediff.tv_usec / 10000 ) ); - -} - -/* - * Build a response PDU - * - * Arguments: - * hdr - pointer to PDU Header with completed Variable list - * - * Returns: - * none - * - */ -static void -build_pdu (Snmp_Header *hdr, int type) -{ - u_char *bp = Resp_Buf; - u_char *vpp; - u_char *ppp; - int erridx = 0; - int varidx = 1; - int varlen = 0; - int pdulen = 0; - int traplen = 0; - Variable *var; - - /* - * Clear out the reply - */ - bzero ( Resp_Buf, sizeof(Resp_Buf) ); - - /* [0] is reserved for overall length */ - bp++; - - /* Start with SEQUENCE OF */ - *bp++ = ASN_SEQUENCE; - /* - assume we can code length in two octets */ - *bp++ = 0x82; - bp++; - bp++; - /* Version */ - *bp++ = ASN_INTEGER; - asn_set_int ( &bp, hdr->version ); - /* Community name */ - *bp++ = ASN_OCTET; - *bp++ = strlen ( hdr->community ); - bcopy ( hdr->community, bp, strlen ( hdr->community ) ); - bp += strlen ( hdr->community ); - /* PDU Type */ - *bp++ = type; - ppp = bp; - /* Length of OID data - assume it'll fit in one octet */ - bp++; - - if ( type != PDU_TYPE_TRAP ) { - /* Sequence ID */ - *bp++ = ASN_INTEGER; - asn_set_int ( &bp, hdr->reqid ); - /* - * Check to see if all the vaiables were resolved - we do this - * by looking for something which still has an ASN_NULL value. - */ - var = hdr->head; - if ( type == PDU_TYPE_GETRESP ) { - while ( var && erridx == 0 ) { - if ( var->type != ASN_NULL ) { - varidx++; - var = var->next; - } else - erridx = varidx; - } - } - - /* Error status */ - *bp++ = ASN_INTEGER; - *bp++ = 0x01; /* length = 1 */ - if ( erridx ) - *bp++ = SNMP_ERR_NOSUCHNAME; - else - *bp++ = SNMP_ERR_NOERROR; - /* Error Index */ - *bp++ = ASN_INTEGER; - *bp++ = 0x01; /* length = 1 */ - *bp++ = erridx; /* index == 0 if no error */ - } else { - /* type == PDU_TYPE_TRAP */ - - /* Fill in ENTERPRISE OBJID */ - *bp++ = ASN_OBJID; - (void) asn_put_objid ( &bp, &hdr->enterprise ); - - /* Fill in IP address */ - *bp++ = ASN_IPADDR; - *bp++ = sizeof ( hdr->ipaddr ); - bcopy ( (caddr_t)&hdr->ipaddr, bp, sizeof(hdr->ipaddr) ); - bp += sizeof(hdr->ipaddr); - - /* Fill in generic and specific trap types */ - *bp++ = ASN_INTEGER; - asn_set_int ( &bp, hdr->generic_trap ); - *bp++ = ASN_INTEGER; - asn_set_int ( &bp, hdr->specific_trap ); - - /* Fill in time-stamp - assume 0 for now */ - *bp++ = ASN_TIMESTAMP; - asn_set_int ( &bp, 0 ); - - /* encoded length */ - traplen = ( bp - ppp - 1 ); - - /* Continue with variable processing */ - } - - /* SEQUENCE OF */ - *bp++ = ASN_SEQUENCE; - *bp++ = 0x82; - /* - assume we can code length in two octets */ - vpp = bp; - varlen = 0; - bp++; - bp++; - - /* Install Variables */ - var = hdr->head; - varidx = 1; - while ( var ) { - u_char *bpp; - int len = 0; - - /* SEQUENCE OF */ - *bp++ = ASN_SEQUENCE; - *bp++ = 0x82; - /* - assume we can code length in two octets */ - bpp = bp; - bp++; - bp++; - /* OBJID */ - *bp++ = ASN_OBJID; - len++; - - len += asn_put_objid ( &bp, &var->oid ); - - if ( erridx && varidx >= erridx ) { - /* Code this variable as NULL */ - *bp++ = ASN_NULL; - len++; - bp++; - len++; - } else { - u_char *lpp; - /* Variable type */ - *bp++ = var->type; - len++; - lpp = bp; - switch ( var->type ) { - case ASN_INTEGER: - asn_set_int ( &bp, var->var.ival ); - len += ( *lpp + 1 ); - break; - case ASN_OCTET: - *bp++ = var->var.sval[0]; - len++; - bcopy ( (caddr_t)&var->var.sval[1], - bp, var->var.sval[0] ); - len += var->var.sval[0]; - bp += var->var.sval[0]; - break; - case ASN_NULL: - *bp++ = 0x00; - len++; - break; - case ASN_OBJID: - len += asn_put_objid ( &bp, &var->var.oval ); - break; - case ASN_SEQUENCE: - break; - case ASN_IPADDR: - *bp++ = 4; - len++; - bcopy ( (caddr_t)&var->var.aval, bp, 4 ); - len += 4; - bp += 4; - break; - case ASN_TIMESTAMP: - asn_set_int ( &bp, var->var.ival ); - len += ( *lpp + 1 ); - break; - default: - break; - } - } - - /* Accumulate total Variable sequence length */ - varlen += (len + 4); - - /* Fill in length of this sequence */ - bpp[1] = len & 0xff; - bpp[0] = len >> 8; - - var = var->next; - } - - - /* Fill in length of Variable sequence */ - vpp[1] = varlen & 0xff; - vpp[0] = varlen >> 8; - - if ( type != PDU_TYPE_TRAP ) { - /* Fill in length of data AFTER PDU type */ - *ppp = varlen + 12 + ppp[2]; /* + length of reqid */ - } else { - /* Fill in length of data AFTER PDU type */ - *ppp = varlen + traplen + 4; /* + length of initial sequence of */ - } - - /* Fill in overall sequence length */ - pdulen = *ppp + 7 + strlen ( hdr->community ); - Resp_Buf[4] = pdulen & 0x7f; - Resp_Buf[3] = pdulen >> 8; - - pdulen = bp - Resp_Buf - 1; - - Resp_Buf[0] = pdulen; - - hdr->pdutype = type; - hdr->pdulen = pdulen; - - return; -} - -static void -free_pdu (Snmp_Header *hdr) -{ - Variable *var; - - while ( hdr->head ) { - var = hdr->head->next; /* Save next link */ - free ( hdr->head ); /* Free current var */ - hdr->head = var; /* Set head to next link */ - } - - free ( hdr ); /* Free fixed portion */ -} - -static void -print_pdu (int dir, int intf, Snmp_Header *Hdr, int len, u_char *buf) -{ - const char * pdu_dir; - const char * pdu_type; - int pdu_num; - - write_timestamp(); - - switch (dir) { - case PDU_SEND: - pdu_dir = "SEND"; - break; - case PDU_RECV: - pdu_dir = "RECV"; - break; - default: - pdu_dir = "undefined"; - break; - } - - if (Hdr == NULL) { - pdu_type = "unknown"; - pdu_num = 0; - } else { - pdu_type = PDU_Types[Hdr->pdutype & 7]; - pdu_num = Hdr->pdutype; - } - - fprintf(Log, - "%s: %s(%d), ILMI %s(%d), PDU Type %s(0x%x) %d/%d bytes.\n", - pdu_dir, - Intf[intf].anp_intf, ilmi_fd[intf], - ILMI_State[intf], ilmi_state[intf], - pdu_type, pdu_num, - len, buf[0]); - - if (Hdr == NULL) - fprintf(Log, "Header seems to be invalid.\n"); - else - print_header(Hdr); - - hexdump(Log, (u_char *)&buf[1], len, NULL); - - return; -} - -/* - * Send a generic response packet - * - * Arguments: - * sd - socket to send the reply on - * reqid - original request ID from GET PDU - * resp - pointer to the response to send - * - * Returns: - * none - response sent - * - */ -static void -send_resp (int intf, Snmp_Header *Hdr, u_char *resp) -{ - int n; - - if ( ilmi_fd[intf] > 0 ) { - n = write ( ilmi_fd[intf], (caddr_t)&resp[1], resp[0] ); - if ( Log && Debug_Level > 1 ) { - print_pdu(PDU_SEND, intf, Hdr, n, resp); - } - } - - free_pdu ( Hdr ); - return; -} - -/* - * Build a COLD_START TRAP PDU - * - */ -static Snmp_Header * -build_cold_start (void) -{ - Snmp_Header *hdr; - Variable *var; - - hdr = (Snmp_Header *)malloc(sizeof(Snmp_Header)); - if (hdr == NULL) { - fprintf(stderr, "malloc() failed in %s()\n", __func__); - exit(1); - } - bzero(hdr, sizeof(Snmp_Header)); - - hdr->pdulen = 0; - hdr->version = SNMP_VERSION_1 - 1; - snprintf ( hdr->community, sizeof(hdr->community), "ILMI" ); - - hdr->ipaddr = 0x0; /* 0.0.0.0 */ - hdr->generic_trap = TRAP_COLDSTART; - hdr->specific_trap = 0; - bcopy ( (caddr_t)&Objids[ENTERPRISE_OBJID], (caddr_t)&hdr->enterprise, - sizeof(Objid) ); - - hdr->head = (Variable *)malloc(sizeof(Variable)); - if (hdr == NULL) { - fprintf(stderr, "malloc() failed in %s()\n", __func__); - exit(1); - } - bzero(hdr->head, sizeof(Variable)); - - var = hdr->head; - bcopy ( (caddr_t)&Objids[UPTIME_OBJID], (caddr_t)&var->oid, - sizeof(Objid) ); - var->type = ASN_NULL; - - return ( hdr ); -} - -/* - * Build a Generic PDU Header - * - */ -static Snmp_Header * -build_generic_header (void) -{ - Snmp_Header *hdr; - - hdr = (Snmp_Header *)malloc(sizeof(Snmp_Header)); - if (hdr == NULL) { - fprintf(stderr, "malloc() failed in %s()\n", __func__); - exit(1); - } - bzero(hdr, sizeof(Snmp_Header)); - - hdr->pdulen = 0; - hdr->version = SNMP_VERSION_1 - 1; - snprintf ( hdr->community, sizeof(hdr->community), "ILMI" ); - - return ( hdr ); -} - -/* - * Initialize information on what physical adapters HARP knows about - * - * Query the HARP subsystem about configuration and physical interface - * information for any currently registered ATM adapters. Store the information - * as arrays for easier indexing by SNMP port/index numbers. - * - * Arguments: - * none - * - * Returns: - * none Information from HARP available - * - */ -static void -init_ilmi (void) -{ - struct air_cfg_rsp *cfg_info = NULL; - struct air_int_rsp *intf_info = NULL; - int buf_len; - - /* - * Get configuration info - what's available with 'atm sh config' - */ - buf_len = get_cfg_info ( NULL, &cfg_info ); - /* - * If error occurred, clear out everything - */ - if ( buf_len <= 0 ) { - bzero ( Cfg, sizeof(Cfg) ); - bzero( Intf, sizeof(Intf) ); - NUnits = 0; - return; - } - - /* - * Move to local storage - */ - bcopy ( cfg_info, (caddr_t)Cfg, buf_len ); - /* - * Compute how many units information was returned for - */ - NUnits = buf_len / sizeof(struct air_cfg_rsp); - /* Housecleaning */ - free ( cfg_info ); - cfg_info = NULL; - /* - * Get the per interface information - */ - buf_len = get_intf_info ( NULL, &intf_info ); - /* - * If error occurred, clear out Intf info - */ - if ( buf_len <= 0 ) { - bzero ( Intf, sizeof(Intf) ); - return; - } - - /* - * Move to local storage - */ - bcopy ( intf_info, (caddr_t)Intf, buf_len ); - /* Housecleaning */ - free ( intf_info ); - intf_info = NULL; - - return; - -} - -/* - * Open a new SNMP session for ILMI - * - * Start by updating interface information, in particular, how many - * interfaces are in the system. While we'll try to open sessons on - * all interfaces, this deamon currently can only handle the first - * interface. - * - * Arguments: - * none - * - * Returns: - * none - * - */ -static void -ilmi_open (void) -{ - struct sockaddr_atm satm; - struct t_atm_aal5 aal5; - struct t_atm_traffic traffic; - struct t_atm_bearer bearer; - struct t_atm_qos qos; - struct t_atm_app_name appname; - Atm_addr subaddr; - char nifname[IFNAMSIZ]; - int optlen; - int unit = 0; - u_char sig_proto; - - init_ilmi(); - - for ( unit = 0; unit < NUnits; unit++ ) { - - /* - * ILMI only makes sense for UNI signalling protocols - */ - sig_proto = Intf[unit].anp_sig_proto; - if ( sig_proto != ATM_SIG_UNI30 && sig_proto != ATM_SIG_UNI31 && - sig_proto != ATM_SIG_UNI40 ) - continue; - - if ( ilmi_fd[unit] == -1 ) { - - ilmi_fd[unit] = socket ( AF_ATM, SOCK_SEQPACKET, ATM_PROTO_AAL5 ); - - if ( ilmi_fd[unit] < 0 ) { - perror ( "open" ); - continue; - } - - /* - * Set interface name. For now, we must have a netif to go on... - */ - if ( Intf[unit].anp_nif_cnt == 0 ) { - if ( Debug_Level > 1 && Log ) { - write_timestamp(); - fprintf ( Log, "No nif on unit %d\n", unit ); - } - close ( ilmi_fd[unit] ); - ilmi_fd[unit] = -1; - continue; - } - sprintf ( nifname, "%s0", Intf[unit].anp_nif_pref ); - optlen = sizeof ( nifname ); - if ( setsockopt ( ilmi_fd[unit], T_ATM_SIGNALING, - T_ATM_NET_INTF, (caddr_t)nifname, optlen ) < 0 ) { - perror ( "setsockopt" ); - if ( Log ) { - write_timestamp(); - fprintf ( Log, - "Couldn't set interface name \"%s\"\n", - nifname ); - } - if ( Debug_Level > 1 && Log ) { - write_timestamp(); - fprintf ( Log, "nifname: closing unit %d\n", unit ); - } - close ( ilmi_fd[unit] ); - ilmi_fd[unit] = -1; - continue; - } - - /* - * Set up destination SAP - */ - bzero ( (caddr_t) &satm, sizeof(satm) ); - satm.satm_family = AF_ATM; -#if (defined(BSD) && (BSD >= 199103)) - satm.satm_len = sizeof(satm); -#endif - - satm.satm_addr.t_atm_sap_addr.SVE_tag_addr = T_ATM_PRESENT; - satm.satm_addr.t_atm_sap_addr.SVE_tag_selector = T_ATM_ABSENT; - satm.satm_addr.t_atm_sap_addr.address_format = T_ATM_PVC_ADDR; - satm.satm_addr.t_atm_sap_addr.address_length = sizeof(Atm_addr_pvc); - ATM_PVC_SET_VPI((Atm_addr_pvc *)satm.satm_addr.t_atm_sap_addr.address, - 0 ); - ATM_PVC_SET_VCI((Atm_addr_pvc *)satm.satm_addr.t_atm_sap_addr.address, - 16 ); - - satm.satm_addr.t_atm_sap_layer2.SVE_tag = T_ATM_PRESENT; - satm.satm_addr.t_atm_sap_layer2.ID_type = T_ATM_SIMPLE_ID; - satm.satm_addr.t_atm_sap_layer2.ID.simple_ID = T_ATM_BLLI2_I8802; - - satm.satm_addr.t_atm_sap_layer3.SVE_tag = T_ATM_ABSENT; - - satm.satm_addr.t_atm_sap_appl.SVE_tag = T_ATM_ABSENT; - - /* - * Set up connection parameters - */ - aal5.forward_max_SDU_size = MAX_LEN; - aal5.backward_max_SDU_size = MAX_LEN; - aal5.SSCS_type = T_ATM_NULL; - optlen = sizeof(aal5); - if ( setsockopt ( ilmi_fd[unit], T_ATM_SIGNALING, T_ATM_AAL5, - (caddr_t) &aal5, optlen ) < 0 ) { - perror ( "setsockopt(aal5)" ); - if ( Debug_Level > 1 && Log ) { - write_timestamp(); - fprintf ( Log, "aal5: closing unit %d\n", unit ); - } - close ( ilmi_fd[unit] ); - ilmi_fd[unit] = -1; - continue; - } - - traffic.forward.PCR_high_priority = T_ATM_ABSENT; - traffic.forward.PCR_all_traffic = 100000; - traffic.forward.SCR_high_priority = T_ATM_ABSENT; - traffic.forward.SCR_all_traffic = T_ATM_ABSENT; - traffic.forward.MBS_high_priority = T_ATM_ABSENT; - traffic.forward.MBS_all_traffic = T_ATM_ABSENT; - traffic.forward.tagging = T_NO; - traffic.backward.PCR_high_priority = T_ATM_ABSENT; - traffic.backward.PCR_all_traffic = 100000; - traffic.backward.SCR_high_priority = T_ATM_ABSENT; - traffic.backward.SCR_all_traffic = T_ATM_ABSENT; - traffic.backward.MBS_high_priority = T_ATM_ABSENT; - traffic.backward.MBS_all_traffic = T_ATM_ABSENT; - traffic.backward.tagging = T_NO; - traffic.best_effort = T_YES; - optlen = sizeof(traffic); - if (setsockopt(ilmi_fd[unit], T_ATM_SIGNALING, T_ATM_TRAFFIC, - (caddr_t)&traffic, optlen) < 0) { - perror("setsockopt(traffic)"); - } - bearer.bearer_class = T_ATM_CLASS_X; - bearer.traffic_type = T_ATM_NULL; - bearer.timing_requirements = T_ATM_NULL; - bearer.clipping_susceptibility = T_NO; - bearer.connection_configuration = T_ATM_1_TO_1; - optlen = sizeof(bearer); - if (setsockopt(ilmi_fd[unit], T_ATM_SIGNALING, T_ATM_BEARER_CAP, - (caddr_t)&bearer, optlen) < 0) { - perror("setsockopt(bearer)"); - } - - qos.coding_standard = T_ATM_NETWORK_CODING; - qos.forward.qos_class = T_ATM_QOS_CLASS_0; - qos.backward.qos_class = T_ATM_QOS_CLASS_0; - optlen = sizeof(qos); - if (setsockopt(ilmi_fd[unit], T_ATM_SIGNALING, T_ATM_QOS, (caddr_t)&qos, - optlen) < 0) { - perror("setsockopt(qos)"); - } - - subaddr.address_format = T_ATM_ABSENT; - subaddr.address_length = 0; - optlen = sizeof(subaddr); - if (setsockopt(ilmi_fd[unit], T_ATM_SIGNALING, T_ATM_DEST_SUB, - (caddr_t)&subaddr, optlen) < 0) { - perror("setsockopt(dest_sub)"); - } - - strncpy(appname.app_name, "ILMI", T_ATM_APP_NAME_LEN); - optlen = sizeof(appname); - if (setsockopt(ilmi_fd[unit], T_ATM_SIGNALING, T_ATM_APP_NAME, - (caddr_t)&appname, optlen) < 0) { - perror("setsockopt(appname)"); - } - - /* - * Now try to connect to destination - */ - if ( connect ( ilmi_fd[unit], (struct sockaddr *) &satm, - sizeof(satm)) < 0 ) { - perror ( "connect" ); - if ( Debug_Level > 1 && Log ) { - write_timestamp(); - fprintf ( Log, "connect: closing unit %d\n", unit ); - } - close ( ilmi_fd[unit] ); - ilmi_fd[unit] = -1; - continue; - } - - if ( Debug_Level && Log ) { - write_timestamp(); - fprintf ( Log, "***** opened unit %d\n", unit ); - } - - ilmi_state[unit] = ILMI_COLDSTART; - - } - - } - - return; - -} - -/* - * Get our local IP address for this interface - * - * Arguments: - * s - socket to find address for - * aval - pointer to variable to store address in - * - * Returns: - * none - * - */ -static void -get_local_ip (int s, long *aval) -{ - char intf_name[IFNAMSIZ]; - socklen_t namelen = IFNAMSIZ; - struct air_netif_rsp *net_info = NULL; - struct sockaddr_in *sain; - - /* - * Get physical interface name - */ - if ( getsockopt ( s, T_ATM_SIGNALING, T_ATM_NET_INTF, - (caddr_t) intf_name, &namelen ) ) - return; - - /* - * Get network interface information for this physical interface - */ - get_netif_info ( intf_name, &net_info ); - if ( net_info == NULL ) - return; - - sain = (struct sockaddr_in *)(void *)&net_info->anp_proto_addr; - - /* - * Fill in answer - */ - bcopy ( (caddr_t)&sain->sin_addr.s_addr, aval, 4 ); - - free ( net_info ); - - return; - -} - -/* - * Set local NSAP prefix and then reply with our full NSAP address. - * - * Switch will send a SET message with the NSAP prefix after a coldStart. - * We'll set that prefix into HARP and then send a SET message of our own - * with our full interface NSAP address. - * - * Arguments: - * oid - objid from SET message - * hdr - pointer to internal SNMP header - * buf - pointer to SET buffer - * s - socket to send messages on - * - * Returns: - * none - * - */ -static void -set_prefix (Objid *oid, Snmp_Header *hdr __unused, int intf) -{ - struct atmsetreq asr; - Atm_addr *aa; - int fd; - int i; - - /* - * Build IOCTL request to set prefix - */ - asr.asr_opcode = AIOCS_SET_PRF; - strncpy ( asr.asr_prf_intf, Intf[intf].anp_intf, - sizeof(asr.asr_prf_intf ) ); - /* - * Pull prefix out of received Objid - * save in set_prefix IOCTL and addressEntry table - */ - for ( i = 0; i < oid->oid[13]; i++ ) { - asr.asr_prf_pref[i] = oid->oid[i + 14]; - } - - /* - * Pass new prefix to the HARP kernel - */ - fd = socket ( AF_ATM, SOCK_DGRAM, 0 ); - if ( fd < 0 ) - return; - if ( ioctl ( fd, AIOCSET, (caddr_t)&asr ) < 0 ) { - if ( errno != EALREADY ) { - syslog ( LOG_ERR, "ilmid: error setting prefix: %m" ); - if ( Log ) { - write_timestamp(); - fprintf ( Log, "errno %d setting prefix\n", - errno ); - } - close ( fd ); - return; - } - } - close ( fd ); - - /* - * Reload the cfg/intf info with newly set prefix - */ - init_ilmi(); - - aa = &Intf[intf].anp_addr; - - /* - * Copy our NSAP into addressEntry table - */ - - addressEntry[intf].oid[0] = 0; - for ( i = 0; i < aa->address_length; i++ ) { - addressEntry[intf].oid[0]++; /* Increment length */ - addressEntry[intf].oid[i + 1] = (int)((u_char *)(aa->address))[i]; - - } - - return; - -} - -static void -set_address (Snmp_Header *hdr __unused, int intf) -{ - Variable *var; - int i, j; - - PDU_Header = build_generic_header(); - - PDU_Header->head = (Variable *)malloc(sizeof(Variable)); - if (PDU_Header->head == NULL) { - fprintf(stderr, "malloc() failed in %s()\n", __func__); - exit(1); - } - bzero(PDU_Header->head, sizeof(Variable)); - - var = PDU_Header->head; - /* Copy generic addressEntry OBJID */ - bcopy ( (caddr_t)&Objids[ADDRESS_OBJID], (caddr_t)&var->oid, - sizeof(Objid) ); - /* Set specific instance */ - i = var->oid.oid[0] + 1; /* Get length */ - var->oid.oid[i++] = 1; - var->oid.oid[i++] = 1; - var->oid.oid[i++] = 3; - var->oid.oid[i++] = 0; - - /* Copy in address length */ - var->oid.oid[i++] = addressEntry[intf].oid[0]; - - /* Copy in address */ - for ( j = 0; j < addressEntry[intf].oid[0]; j++ ) - var->oid.oid[i++] = addressEntry[intf].oid[j + 1]; - var->oid.oid[0] = i - 1; /* Set new length */ - - /* Set == VALID */ - var->type = ASN_INTEGER; - var->var.ival = 1; - - build_pdu ( PDU_Header, PDU_TYPE_SET ); - send_resp ( intf, PDU_Header, Resp_Buf ); -} - -/* - * Increment Debug Level - * - * Catches SIGUSR1 signal and increments value of Debug_Level - * - * Arguments: - * sig - signal number - * - * Returns: - * none - Debug_Level incremented - * - */ -static void -Increment_DL (int sig __unused) -{ - Debug_Level++; - if ( Debug_Level && Log == (FILE *)NULL ) { - if ( foregnd ) { - Log = stderr; - } else { - if ( ( Log = fopen ( LOG_FILE, "a" ) ) == NULL ) - Log = NULL; - } - if ( Log ) { - setbuf ( Log, NULL ); - write_timestamp(); - fprintf ( Log, "Raised Debug_Level to %d\n", Debug_Level ); - } - } - signal ( SIGUSR1, Increment_DL ); - return; -} - -/* - * Decrement Debug Level - * - * Catches SIGUSR2 signal and decrements value of Debug_Level - * - * Arguments: - * sig - signal number - * - * Returns: - * none - Debug_Level decremented - * - */ -static void -Decrement_DL (int sig __unused) -{ - Debug_Level--; - if ( Debug_Level <= 0 ) { - Debug_Level = 0; - if ( Log ) { - write_timestamp(); - fprintf ( Log, "Lowered Debug_Level to %d\n", Debug_Level ); - if ( !foregnd ) - fclose ( Log ); - Log = NULL; - } - } - signal ( SIGUSR2, Decrement_DL ); - return; -} - -/* - * Loop through GET variable list looking for matches - * - */ -static void -process_get (Snmp_Header *hdr, int intf) -{ - Variable *var; - int idx; - int x; - int oidlen; - - var = hdr->head; - while ( var ) { - - /* Handle the 'GET PREFIX' request */ - oidlen = Objids[SETPFX_OBJID].oid[0]; - if (oid_ncmp(&var->oid, &Objids[SETPFX_OBJID], oidlen) == 0) { - var->var.ival = 2; /* assume not valid */ - for(x = 0; x < 13; x++) - if (var->oid.oid[oidlen + x + 2] != - addressEntry[intf].oid[x + 1]) - break; - - /* Address Match */ - if (x == 13) - hdr->head->var.ival = 1; - var = var->next; - continue; - } - - idx = find_var ( var ); - switch ( idx ) { - case MADGE_OBJECT1: - /* reply with NO SUCH OBJECT */ - var->type = ASN_NULL; - break; - case SYS_OBJID: - var->type = ASN_OBJID; - bcopy ( (caddr_t)&Objids[MY_OBJID], - (caddr_t)&var->var.oval, - sizeof(Objid) ); - break; - case UPTIME_OBJID: - var->type = ASN_TIMESTAMP; - var->var.ival = get_ticks(); - break; - case UNITYPE_OBJID: - var->type = ASN_INTEGER; - var->var.ival = UNITYPE_PRIVATE; - break; - case UNIVER_OBJID: - var->type = ASN_INTEGER; - switch ( Intf[intf].anp_sig_proto ) { - case ATM_SIG_UNI30: - var->var.ival = UNIVER_UNI30; - break; - case ATM_SIG_UNI31: - var->var.ival = UNIVER_UNI31; - break; - case ATM_SIG_UNI40: - var->var.ival = UNIVER_UNI40; - break; - default: - var->var.ival = UNIVER_UNKNOWN; - break; - } - break; - case DEVTYPE_OBJID: - var->type = ASN_INTEGER; - var->var.ival = DEVTYPE_USER; - break; - case MAXVCC_OBJID: - var->type = ASN_INTEGER; - var->var.ival = 1024; - break; - case PORT_OBJID: - var->type = ASN_INTEGER; - var->var.ival = intf + 1; - break; - case IPNM_OBJID: - var->type = ASN_IPADDR; - get_local_ip( ilmi_fd[intf], &var->var.aval ); - break; - case ADDRESS_OBJID: - break; - case ATMF_PORTID: - var->type = ASN_INTEGER; - var->var.ival = 0x30 + intf; - break; - case ATMF_SYSID: - var->type = ASN_OCTET; - var->var.sval[0] = 6; - bcopy ( (caddr_t)&Cfg[intf].acp_macaddr, - (caddr_t)&var->var.sval[1], 6 ); - break; - default: - /* NO_SUCH */ - break; - } - var = var->next; - } - build_pdu ( hdr, PDU_TYPE_GETRESP ); - send_resp ( intf, hdr, Resp_Buf ); - -} - -/****************************************************************************** - * - * Find an OBJID from known ones - * - * in: Variable with valid OID - * out: OID number (index), -1 = not found - */ -static int -lmi_object_find (Variable *var) -{ - Objid * obj_var; - Objid * obj_cur; - size_t x; - int y; - - obj_var = &var->oid; - - for (x = 0; x < NUM_OIDS; x++) { - obj_cur = &Objids[x]; - for (y = 0; y < 128; y++) { - if (obj_var->oid[y] != obj_cur->oid[y]) - break; - if (obj_var->oid[y] == 0) /* object ID endmark */ - return (x); - } - } - - return (-1); -} - -#if 0 -/****************************************************************************** - * - * Append instance number to OID - * - * in: Variable, instance number - * out: zero = success - * - */ -static int -lmi_object_instance (Variable *var, int instnum) -{ - int * oidptr; - int curlen; - - oidptr = var->oid.oid; - curlen = oidptr[0]; /* current length */ - if (curlen > 126) - return (1); - curlen++; - oidptr[curlen] = instnum; - oidptr[0] = curlen; - return (0); -} -#endif - -/****************************************************************************** - * - * Handle received GETNEXT - * - * in: Header with valid fields, interface number - * out: zero = success - * - */ -static int -lmi_rcvcmd_getnext (Snmp_Header *header, int intf) -{ - int * oidptr; - int oidlen; - int oidnum; - int x; - - oidnum = lmi_object_find(header->head); - oidptr = header->head->oid.oid; - oidlen = oidptr[0]; - - switch(oidnum) { - /* Should be because the remote side is attempting - * to verify that our table is empty - */ - case ADDRESS_OBJID: - if ( addressEntry[intf].oid[0] ) { - /* XXX - FIXME */ - /* Our table is not empty - return address */ - } - break; - - /* Madge Collage sends GETNEXT for this */ - case SETPFX_OBJID: - if(addressEntry[intf].oid[0]) { /* we have a prefix */ - oidptr[0] += 14; - oidptr += oidlen; /* skip to last number */ - oidptr++; - *oidptr++ = 13; /* length of prefix */ - - /* fill in the prefix */ - for(x = 0; x < 13; x++) { - *oidptr++ = addressEntry[intf].oid[x+1]; - } - header->head->type = ASN_INTEGER; - /* 1=valid, 2=invalid -- only 2 values */ - header->head->var.ival = 1; - } else { /* no prefix available */ - header->head->type = ASN_NULL; - } - break; - - default: - return (1); /* unknown object ID */ - } - - build_pdu(header, PDU_TYPE_GETRESP); - send_resp(intf, header, Resp_Buf); - - return (0); -} - - -/****************************************************************************** - * - * Handle received TRAP - * - * in: Header with valid fields, interface number - * out: zero = success - * - */ -static int -lmi_rcvcmd_trap (Snmp_Header *header __unused, int intf) -{ - - bzero((caddr_t)&addressEntry[intf], sizeof(Objid)); - return (0); -} - -/* - * ILMI State Processing Loop - * - * - */ -static void -ilmi_do_state(void) -{ - struct timeval tvp; - fd_set rfd; - u_char buf[1024]; - Variable *var; - int intf; - int maxfd = 0; - - /* - * Loop forever - */ - for ( ; ; ) { - int count; - int n; - u_char *bpp; - Snmp_Header *Hdr; - - /* - * SunOS CC doesn't allow automatic aggregate initialization. - * Initialize to zero which effects a poll operation. - */ - tvp.tv_sec = 15; - tvp.tv_usec = 0; - - /* - * Clear fd_set and initialize to check this interface - */ - FD_ZERO ( &rfd ); - for ( intf = 0; intf < MAX_UNITS; intf++ ) - if ( ilmi_fd[intf] > 0 ) { - FD_SET ( ilmi_fd[intf], &rfd ); - maxfd = MAX ( maxfd, ilmi_fd[intf] ); - } - - /* - * Check for new interfaces - */ - ilmi_open(); - - for ( intf = 0; intf < MAX_UNITS; intf++ ) { - /* - * Do any pre-message state processing - */ - switch ( ilmi_state[intf] ) { - case ILMI_COLDSTART: - /* - * Clear addressTable - */ - bzero ( (caddr_t)&addressEntry[intf], sizeof(Objid) ); - - /* - * Start by sending a COLD_START trap. This should cause the - * remote end to clear the associated prefix/address table(s). - */ - /* Build ColdStart TRAP header */ - ColdStart_Header = build_cold_start(); - build_pdu ( ColdStart_Header, PDU_TYPE_TRAP ); - send_resp ( intf, ColdStart_Header, Resp_Buf ); - - /* - * Start a timeout so that if the next state fails, we re-enter - * ILMI_COLDSTART. - */ - /* atm_timeout() */ - - /* Enter new state */ - ilmi_state[intf] = ILMI_INIT; - /* fall into ILMI_INIT */ - - case ILMI_INIT: - /* - * After a COLD_START, we need to check that the remote end has - * cleared any tables. Send a GET_NEXT request to check for this. - * In the event that the table is not empty, or that no reply is - * received, return to COLD_START state. - */ - PDU_Header = build_generic_header(); - - PDU_Header->head = (Variable *)malloc(sizeof(Variable)); - if (PDU_Header->head == NULL) { - fprintf(stderr, "malloc() failed in %s()\n", __func__); - exit(1); - } - bzero(PDU_Header->head, sizeof(Variable)); - - var = PDU_Header->head; - bcopy ( (caddr_t)&Objids[ADDRESS_OBJID], (caddr_t)&var->oid, - sizeof(Objid) ); - var->type = ASN_NULL; - var->next = NULL; - - /* - * Send GETNEXT request looking for empty ATM Address Table - */ - PDU_Header->reqid = Req_ID++; - build_pdu ( PDU_Header, PDU_TYPE_GETNEXT ); - send_resp ( intf, PDU_Header, Resp_Buf ); - - /* - * Start a timeout while looking for SET message. If we don't receive - * a SET, then go back to COLD_START state. - */ - /* atm_timeout() */ - break; - - case ILMI_RUNNING: - /* Normal SNMP processing */ - break; - - default: - break; - } - } - - count = select ( maxfd + 1, &rfd, NULL, NULL, &tvp ); - - for ( intf = 0; intf < MAX_UNITS; intf++ ) { - /* - * Check for received messages - */ - if ( ilmi_fd[intf] > 0 && FD_ISSET ( ilmi_fd[intf], & rfd ) ) { - - n = read ( ilmi_fd[intf], (caddr_t)&buf[1], sizeof(buf) - 1 ); - if ( n == -1 && ( errno == ECONNRESET || errno == EBADF ) ) { - ilmi_state[intf] = ILMI_COLDSTART; - close ( ilmi_fd[intf] ); - ilmi_fd[intf] = -1; - } else { - bpp = &buf[1]; - Hdr = asn_get_header(&bpp); - - if ( Log && Debug_Level > 1 ) - print_pdu(PDU_RECV, intf, Hdr, n, buf); - - if (Hdr == NULL) - continue; - - /* What we do with this messages depends upon the state we're in */ - switch ( ilmi_state[intf] ) { - case ILMI_COLDSTART: - /* We should never be in this state here */ - free_pdu ( Hdr ); - break; - case ILMI_INIT: - /* The only messages we care about are GETNEXTs, GETRESPs, and TRAPs */ - switch ( Hdr->pdutype ) { - case PDU_TYPE_GETNEXT: - lmi_rcvcmd_getnext(Hdr, intf); - break; - case PDU_TYPE_GETRESP: - /* - * This should be in response to our GETNEXT. - * Check the OIDs and go onto ILMI_RUNNING if - * the address table is empty. We can cheat and - * not check sequence numbers because we only send - * the one GETNEXT request and ILMI says we shouldn't - * have interleaved sessions. - */ - /* - * First look for empty table. If found, go to next state. - */ - if ((Hdr->error == SNMP_ERR_NOSUCHNAME) || - ((Hdr->error == SNMP_ERR_NOERROR) && - ( oid_ncmp ( &Objids[ADDRESS_OBJID], &Hdr->head->oid, - Objids[ADDRESS_OBJID].oid[0] ) == 1 ))) { - ilmi_state[intf] = ILMI_RUNNING; /* ILMI_REG; */ - } else if (Hdr->error == SNMP_ERR_NOERROR) { - /* - * Check to see if this matches our address - * and if so, that it's a VALID entry. - */ - Atm_addr *aa; - int l; - int match = 1; - - aa = &Intf[intf].anp_addr; - if ( aa->address_length == Hdr->head->oid.oid[13] ) { - for ( l = 0; l < aa->address_length; l++ ) { - if ( (int)((u_char *)(aa->address))[l] != - Hdr->head->oid.oid[14 + l] ) { - match = 0; - } - } - } - if ( match ) { - if ( Hdr->head->var.ival == 1 ) { - ilmi_state[intf] = ILMI_RUNNING; - } - } - } - free_pdu ( Hdr ); - break; - case PDU_TYPE_SET: - /* Look for SET_PREFIX Objid */ - if ( oid_ncmp ( &Hdr->head->oid, - &Objids[SETPFX_OBJID], - Objids[SETPFX_OBJID].oid[0] ) == 0 ) { - set_prefix ( &Hdr->head->oid, Hdr, intf ); - /* Reply to SET before sending our ADDRESS */ - build_pdu(Hdr, PDU_TYPE_GETRESP); - send_resp( intf, Hdr, Resp_Buf ); - set_address ( Hdr, intf ); - } else { - build_pdu(Hdr, PDU_TYPE_GETRESP); - send_resp( intf, Hdr, Resp_Buf ); - } - break; - case PDU_TYPE_TRAP: - /* Remote side wants us to start fresh */ - lmi_rcvcmd_trap(Hdr, intf); - free_pdu ( Hdr ); - break; - default: - /* Ignore */ - free_pdu ( Hdr ); - break; - } - break; - case ILMI_REG: - break; - case ILMI_RUNNING: - /* We'll take anything here */ - switch ( Hdr->pdutype ) { - case PDU_TYPE_GET: - process_get ( Hdr, intf ); - break; - case PDU_TYPE_GETRESP: - /* Ignore GETRESPs */ - free_pdu ( Hdr ); - break; - case PDU_TYPE_GETNEXT: - lmi_rcvcmd_getnext(Hdr, intf); - break; - case PDU_TYPE_SET: - /* Look for SET_PREFIX Objid */ - if ( oid_ncmp ( &Hdr->head->oid, - &Objids[SETPFX_OBJID], - Objids[SETPFX_OBJID].oid[0] ) == 0 ) { - set_prefix ( &Hdr->head->oid, Hdr, intf ); - /* Reply to SET before sending our ADDRESS */ - build_pdu(Hdr, PDU_TYPE_GETRESP); - send_resp( intf, Hdr, Resp_Buf ); - set_address ( Hdr, intf ); - } else { - build_pdu(Hdr, PDU_TYPE_GETRESP); - send_resp( intf, Hdr, Resp_Buf ); - } - break; - case PDU_TYPE_TRAP: - lmi_rcvcmd_trap(Hdr, intf); - free_pdu ( Hdr ); - break; - } - break; - default: - /* Unknown state */ - free_pdu ( Hdr ); - break; - } - } /* if n > 0 */ - } /* if received message */ - } /* for each interface */ - } /* for ever loop */ - -} - -int -main (int argc, char *argv[]) -{ - int c; - int i; - int Reset = 0; /* Should we send a coldStart and exit? */ - - /* - * What are we running as? (argv[0]) - */ - progname = strdup ( (char *)basename ( argv[0] ) ); - /* - * What host are we - */ - gethostname ( hostname, sizeof ( hostname ) ); - - /* - * Ilmid needs to run as root to set prefix - */ - if ( getuid() != 0 ) { - fprintf ( stderr, "%s: needs to run as root.\n", progname ); - exit ( -1 ); - } - - /* - * Parse arguments - */ - while ( ( c = getopt ( argc, argv, "d:fr" ) ) != -1 ) - switch ( c ) { - case 'd': - Debug_Level = atoi ( optarg ); - break; - case 'f': - foregnd++; - break; - case 'r': - Reset++; - break; - case '?': - fprintf ( stderr, "usage: %s [-d level] [-f] [-r]\n", - progname ); - exit ( -1 ); -/* NOTREACHED */ - break; - } - - /* - * If we're not doing debugging, run in the background - */ - if ( foregnd == 0 ) { - if ( daemon ( 0, 0 ) ) - err ( 1, "Can't fork" ); - } /* else - setbuf ( stdout, NULL ); */ - - signal ( SIGUSR1, Increment_DL ); - signal ( SIGUSR2, Decrement_DL ); - - /* - * Open log file - */ - if ( Debug_Level ) { - if ( foregnd ) { - Log = stderr; - } else { - if ( ( Log = fopen ( LOG_FILE, "a" ) ) == NULL ) - Log = NULL; - } - } - if ( Log ) - setbuf ( Log, NULL ); - - /* - * Get our startup time - */ - (void) gettimeofday ( &starttime, NULL ); - starttime.tv_sec--; - starttime.tv_usec += 1000000; - - /* Randomize starting request ID */ - Req_ID = starttime.tv_sec; - - /* - * Reset all the interface descriptors - */ - for ( i = 0; i < MAX_UNITS; i++ ) { - ilmi_fd[i] = -1; - } - /* - * Try to open all the interfaces - */ - ilmi_open (); - - /* - * If we're just sending a coldStart end exiting... - */ - if ( Reset ) { - for ( i = 0; i < MAX_UNITS; i++ ) - if ( ilmi_fd[i] >= 0 ) { - /* Build ColdStart TRAP header */ - ColdStart_Header = build_cold_start(); - build_pdu ( ColdStart_Header, PDU_TYPE_TRAP ); - send_resp ( i, ColdStart_Header, Resp_Buf ); - if ( Debug_Level > 1 && Log ) { - write_timestamp(); - fprintf ( Log, "Close ilmi_fd[%d]: %d\n", - i, ilmi_fd[i] ); - } - close ( ilmi_fd[i] ); - } - exit ( 2 ); - } - - ilmi_do_state(); - - exit(0); -} |
