/********************************************************************** Copyright 1988, 1989, 1991, 1992 by Carnegie Mellon University All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of CMU not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ******************************************************************/ #include #include #include #include #include #if TIME_WITH_SYS_TIME #include #include #else # if HAVE_SYS_TIME_H # include # else # include # endif #endif #ifdef linux #include #endif #ifdef STDC_HEADERS #include #endif #ifdef NEED_MEMORY_H #include #endif #ifndef HAVE_MEMCPY #define memcpy(d, s, n) bcopy ((s), (d), (n)) #define memmove(d, s, n) bcopy ((s), (d), (n)) #endif #include "parse.h" #include "mib.h" #include "g_snmp.h" #ifndef MIBTXTDIR #define MIBTXTDIR "/etc" #endif /* fwd: */ static void sprint_by_type (); static void set_functions (); static int lc_cmp (); static void sprint_objid (); static struct tree *get_symbol (); static char *uptimeString (guint32 timeticks, char *buf, int buflen); static void sprint_asciistring (char *buf, int buflen, guchar *cp, int len); /* * Local functions */ static char * uptimeString(guint32 timeticks, char *buf, int buflen) { int seconds, minutes, hours, days; timeticks /= 100; days = timeticks / (60 * 60 * 24); timeticks %= (60 * 60 * 24); hours = timeticks / (60 * 60); timeticks %= (60 * 60); minutes = timeticks / 60; seconds = timeticks % 60; if (days == 0) { g_snprintf(buf, buflen, "%d:%02d:%02d", hours, minutes, seconds); } else if (days == 1) { g_snprintf(buf, buflen, "%d day, %d:%02d:%02d", days, hours, minutes, seconds); } else { g_snprintf(buf, buflen, "%d days, %d:%02d:%02d", days, hours, minutes, seconds); } return buf; } static void sprint_hexstring(char *buf, int buflen, u_char *cp, int len) { for(; len >= 16; len -= 16) { g_snprintf(buf, buflen, "%02X %02X %02X %02X %02X %02X %02X %02X ", cp[0], cp[1], cp[2], cp[3], cp[4], cp[5], cp[6], cp[7]); buflen -= strlen(buf); buf += strlen(buf); cp += 8; g_snprintf(buf, buflen, "%02X %02X %02X %02X %02X %02X %02X %02X\n", cp[0], cp[1], cp[2], cp[3], cp[4], cp[5], cp[6], cp[7]); buflen -= strlen(buf); buf += strlen(buf); cp += 8; } for(; len > 0; len--) { g_snprintf(buf, buflen, "%02X ", *cp++); buflen -= strlen(buf); buf += strlen(buf); } *buf = '\0'; } static void sprint_asciistring(char *buf, int buflen, u_char *cp, int len) { int x; for(x = 0; (x < len) && buflen; x++) { if (isprint(*cp)) { *buf++ = *cp++; buflen --; } else { *buf++ = '.'; buflen --; cp++; } } *buf = '\0'; } /* 0 < 4 hex 0 "" < 4 hex Hex: oo oo oo < 4 "fgh" Hex: oo oo oo > 4 hex Hex: oo oo oo oo oo oo oo oo > 4 "this is a test" */ static void sprint_octet_string(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { int hex, x; u_char *cp; if (var->type != SNMP_OCTETSTR) { g_snprintf(buf, buflen, "Wrong Type (should be OCTET STRING): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } hex = 0; for(cp = var->syntax.c, x = 0; x < var->syntax_len; x++, cp++) { if (!(isprint(*cp) || isspace(*cp))) hex = 1; } if (var->syntax_len == 0) { if (buflen >=2) strcpy(buf, "\"\""); return; } if (!hex) { if (buflen) { *buf++ = '"'; buflen --; } sprint_asciistring(buf, buflen, var->syntax.c, var->syntax_len); buflen -= strlen(buf); buf += strlen(buf); if (buflen) { *buf++ = '"'; buflen --; } *buf = '\0'; } if (hex || var->syntax_len <= 4) { sprint_hexstring(buf, buflen, var->syntax.c, var->syntax_len); } } static void sprint_opaque(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { if (var->type != SNMP_OPAQUE) { g_snprintf(buf, buflen, "Wrong Type (should be Opaque): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } sprint_hexstring(buf, buflen, var->syntax.c, var->syntax_len); } static void sprint_object_identifier(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { if (var->type != SNMP_OBJECTID) { g_snprintf(buf, buflen, "Wrong Type (should be OBJECT IDENTIFIER): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } sprint_objid(buf, buflen, (gulong *)var->syntax.ul, var->syntax_len / sizeof(gulong)); } static void sprint_timeticks(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { char timebuf[32]; if (var->type != SNMP_TIMETICKS) { g_snprintf(buf, buflen, "Wrong Type (should be Timeticks): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } g_snprintf(buf, buflen, "Timeticks: (%ld) %s", var->syntax.ul[0], uptimeString(var->syntax.ul[0], timebuf, sizeof(timebuf))); } static void sprint_integer(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { char *enum_string = NULL; if (var->type != SNMP_INTEGER) { g_snprintf(buf, buflen, "Wrong Type (should be INTEGER): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } for (; enums; enums = enums->next) if (enums->value == var->syntax.l[0]) { enum_string = enums->label; break; } if (enum_string == NULL) g_snprintf(buf, buflen, "%ld", var->syntax.l[0]); else g_snprintf(buf, buflen, "%s(%ld)", enum_string, var->syntax.l[0]); } static void sprint_uinteger(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { char *enum_string = NULL; if (var->type != SNMP_UINTEGER) { g_snprintf(buf, buflen, "Wrong Type (should be UInteger32): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } for (; enums; enums = enums->next) if (enums->value == var->syntax.ul[0]) { enum_string = enums->label; break; } if (enum_string == NULL) g_snprintf(buf, buflen, "%ld", var->syntax.ul[0]); else g_snprintf(buf, buflen, "%s(%ld)", enum_string, var->syntax.ul[0]); } static void sprint_gauge(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { if (var->type != SNMP_GAUGE) { g_snprintf(buf, buflen, "Wrong Type (should be Gauge): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } sprintf(buf, "Gauge: %lu", var->syntax.ul[0]); } static void sprint_counter(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { if (var->type != SNMP_COUNTER) { g_snprintf(buf, buflen, "Wrong Type (should be Counter): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } sprintf(buf, "%lu", var->syntax.ul[0]); } static void sprint_networkaddress(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { int x, len; u_char *cp; sprintf(buf, "Network Address: "); buf += strlen(buf); cp = var->syntax.c; len = var->syntax_len; for(x = 0; x < len; x++) { sprintf(buf, "%02X", *cp++); buf += strlen(buf); if (x < (len - 1)) *buf++ = ':'; } } static void sprint_ipaddress(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { u_char *ip; if (var->type != SNMP_IPADDR) { g_snprintf(buf, buflen, "Wrong Type (should be Ipaddress): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } ip = var->syntax.c; sprintf(buf, "IpAddress: %d.%d.%d.%d",ip[0], ip[1], ip[2], ip[3]); } static void sprint_null(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { if (var->type != SNMP_NULL) { g_snprintf(buf, buflen, "Wrong Type (should be NULL): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } g_snprintf(buf, buflen, "NULL"); } static void sprint_bitstring(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { int len, bit; u_char *cp; char *enum_string; if (var->type != SNMP_BITSTR) { g_snprintf(buf, buflen, "Wrong Type (should be BIT STRING): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } sprintf(buf, "BIT_STRING: "); buf += strlen(buf); sprint_hexstring(buf, buflen, var->syntax.c, var->syntax_len); buf += strlen(buf); cp = var->syntax.c + 1; for(len = 0; len < var->syntax_len - 1; len++) { for(bit = 0; bit < 8; bit++) { if (*cp & (0x80 >> bit)) { enum_string = NULL; for (; enums; enums = enums->next) if (enums->value == (len * 8) + bit) { enum_string = enums->label; break; } if (enum_string == NULL) sprintf(buf, "%d ", (len * 8) + bit); else sprintf(buf, "%s(%d) ", enum_string, (len * 8) + bit); buf += strlen(buf); } } cp ++; } } static void sprint_nsapaddress(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { if (var->type != SNMP_NSAP) { g_snprintf(buf, buflen, "Wrong Type (should be NsapAddress): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } sprintf(buf, "NsapAddress: "); buf += strlen(buf); sprint_hexstring(buf, buflen, var->syntax.c, var->syntax_len); } static void sprint_counter64(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { if (var->type != SNMP_COUNTER64) { g_snprintf(buf, buflen, "Wrong Type (should be Counter64): "); buflen -= strlen(buf); buf += strlen(buf); sprint_by_type(buf, buflen, var, (struct enum_list *)NULL); return; } sprintf(buf, "Counter64: "); buf += strlen(buf); sprint_hexstring(buf, buflen, &(var->syntax.uc[0]), 4); buf += strlen(buf); sprint_hexstring(buf, buflen, &(var->syntax.uc[4]), 4); } static void sprint_unknowntype(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { sprint_by_type(buf, buflen, var, NULL); } static void sprint_badtype(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { g_snprintf(buf, buflen, "Variable has bad type"); } static void sprint_by_type(char *buf, int buflen, SNMP_OBJECT *var, struct enum_list *enums) { switch (var->type) { case SNMP_INTEGER: sprint_integer(buf, buflen, var, enums); break; case SNMP_OCTETSTR: sprint_octet_string(buf, buflen, var, enums); break; case SNMP_OPAQUE: sprint_opaque(buf, buflen, var, enums); break; case SNMP_OBJECTID: sprint_object_identifier(buf, buflen, var, enums); break; case SNMP_TIMETICKS: sprint_timeticks(buf, buflen, var, enums); break; case SNMP_GAUGE: sprint_gauge(buf, buflen, var, enums); break; case SNMP_COUNTER: sprint_counter(buf, buflen, var, enums); break; case SNMP_IPADDR: sprint_ipaddress(buf, buflen, var, enums); break; case SNMP_NULL: sprint_null(buf, buflen, var, enums); break; #if 0 case SNMP_UINTEGER: sprint_uinteger(buf, buflen, var, enums); break; #endif default: sprint_badtype(buf, buflen, var, enums); break; } } struct tree *get_symbol(); gulong RFC1213_MIB[] = { 1, 3, 6, 1, 2, 1 }; unsigned char RFC1213_MIB_text[] = ".iso.org.dod.internet.mgmt.mib-2"; unsigned char EXPERIMENTAL_MIB_text[] = ".iso.org.dod.internet.experimental"; unsigned char PRIVATE_MIB_text[] = ".iso.org.dod.internet.private"; unsigned char PARTY_MIB_text[] = ".iso.org.dod.internet.snmpParties"; unsigned char SECRETS_MIB_text[] = ".iso.org.dod.internet.snmpSecrets"; struct tree *Mib = 0; static char Standard_Prefix[] = ".1.3.6.1.2.1."; static char Prefix[256]; static int Suffix; void init_mib() { char *file, *getenv(), *prefix; Mib = 0; file = getenv("MIBFILE"); if (file) Mib = read_mib(file); if (!Mib) Mib = read_mib("mib.txt"); #ifdef MIBFILEPATH if (!Mib) { char tmp [1024]; sprintf (tmp, "%s/mib.txt", MIBFILEPATH); Mib = read_mib(tmp); } #endif if (!Mib) { char tmp [1024]; sprintf (tmp, "%s/mib.txt", MIBTXTDIR); Mib = read_mib(tmp); } if (!Mib) { fprintf(stderr, "Couldn't find mib file\n"); exit(2); } prefix = getenv("PREFIX"); if (! prefix) { prefix = Standard_Prefix; } /* save prefix: */ snmp_new_prefix (prefix); if (getenv("SUFFIX")) Suffix = TRUE; else Suffix = FALSE; set_functions(Mib); } /* * Phil Wood : * * [...] I made an addition to mib.c to accomodate some old perl snmp * code for a program called vulture that used a global pointer to the * prefix to change things. */ char * snmp_new_prefix (char *prefix) { char *lastchar; int plen; if (prefix) { lastchar = "."; if (*prefix == '.') { prefix++; } if ((plen = strlen (prefix))) { lastchar = prefix + plen - 1; } strncpy (Prefix, prefix, sizeof (Prefix) - 2); Prefix [sizeof (Prefix) - 2] = 0; if (*lastchar != '.') { Prefix [plen++] = '.'; Prefix [plen] = 0; } return Prefix; } return NULL; } static void set_functions(struct tree *subtree) { for(; subtree; subtree = subtree->next_peer) { switch(subtree->type) { case TYPE_OBJID: subtree->printer = sprint_object_identifier; break; case TYPE_OCTETSTR: subtree->printer = sprint_octet_string; break; case TYPE_INTEGER: subtree->printer = sprint_integer; break; case TYPE_NETADDR: subtree->printer = sprint_networkaddress; break; case TYPE_IPADDR: subtree->printer = sprint_ipaddress; break; case TYPE_COUNTER: subtree->printer = sprint_counter; break; case TYPE_GAUGE: subtree->printer = sprint_gauge; break; case TYPE_TIMETICKS: subtree->printer = sprint_timeticks; break; case TYPE_OPAQUE: subtree->printer = sprint_opaque; break; case TYPE_NULL: subtree->printer = sprint_null; break; case TYPE_BITSTRING: subtree->printer = sprint_bitstring; break; case TYPE_NSAPADDRESS: subtree->printer = sprint_nsapaddress; break; case TYPE_COUNTER64: subtree->printer = sprint_counter64; break; case TYPE_UINTEGER: subtree->printer = sprint_uinteger; break; case TYPE_OTHER: default: subtree->printer = sprint_unknowntype; break; } set_functions(subtree->child_list); } } static void sprint_objid(char *buf, int buflen, gulong *objid, int objidlen) { char tempbuf[2048], *cp; struct tree *subtree = Mib; *tempbuf = '.'; /* this is a fully qualified name */ get_symbol(objid, objidlen, subtree, tempbuf + 1); if (Suffix) { for(cp =tempbuf; *cp; cp++) ; while(cp >= tempbuf) { if (isalpha(*cp)) break; cp--; } while(cp >= tempbuf) { if (*cp == '.') break; cp--; } cp++; if (cp < tempbuf) cp = tempbuf; } else { cp = tempbuf; if ((strlen(tempbuf) > strlen((char *)RFC1213_MIB_text)) && !bcmp(tempbuf, (char *)RFC1213_MIB_text, strlen((char *)RFC1213_MIB_text))) { cp += sizeof(RFC1213_MIB_text); } if ((strlen(tempbuf) > strlen((char *)EXPERIMENTAL_MIB_text)) && !bcmp(tempbuf, (char *) EXPERIMENTAL_MIB_text, strlen((char *)EXPERIMENTAL_MIB_text))) { cp += sizeof(EXPERIMENTAL_MIB_text); } if ((strlen(tempbuf) > strlen((char *)PRIVATE_MIB_text)) && !bcmp(tempbuf, (char *) PRIVATE_MIB_text, strlen((char *)PRIVATE_MIB_text))) { cp += sizeof(PRIVATE_MIB_text); } if ((strlen(tempbuf) > strlen((char *)PARTY_MIB_text)) && !bcmp(tempbuf, (char *) PARTY_MIB_text, strlen((char *)PARTY_MIB_text))) { cp += sizeof(PARTY_MIB_text); } if ((strlen(tempbuf) > strlen((char *)SECRETS_MIB_text)) && !bcmp(tempbuf, (char *) SECRETS_MIB_text, strlen((char *)SECRETS_MIB_text))) { cp += sizeof(SECRETS_MIB_text); } } strcpy(buf, cp); } void print_objid(gulong *objid, int objidlen) { char buf[256]; sprint_objid(buf, sizeof(buf), objid, objidlen); printf("%s\n", buf); } void sprint_value(char *buf, int buflen, gulong *objid, int objidlen, SNMP_OBJECT *variable) { char tempbuf[2048]; struct tree *subtree = Mib; if (variable->type == SNMP_NOSUCHOBJECT) g_snprintf(buf, buflen, "No Such Object available on this agent"); else if (variable->type == SNMP_NOSUCHINSTANCE) g_snprintf(buf, buflen, "No Such Instance currently exists"); else if (variable->type == SNMP_ENDOFMIBVIEW) g_snprintf(buf, buflen, "No more variables left in this MIB View"); else { subtree = get_symbol(objid, objidlen, subtree, tempbuf); if (subtree->printer) (*subtree->printer)(buf, buflen, variable, subtree->enums); else { sprint_by_type(buf, buflen, variable, subtree->enums); } } } void print_value(gulong *objid, int objidlen, SNMP_OBJECT *variable) { char tempbuf[2048]; sprint_value(tempbuf, sizeof(tempbuf), objid, objidlen, variable); printf("%s\n", tempbuf); } static struct tree * get_symbol(gulong *objid, int objidlen, struct tree *subtree, char *buf) { struct tree *return_tree = NULL; for(; subtree; subtree = subtree->next_peer){ if (*objid == subtree->subid){ strcpy(buf, subtree->label); goto found; } } /* subtree not found */ while(objidlen--){ /* output rest of name, uninterpreted */ sprintf(buf, "%lu.", *objid++); while(*buf) buf++; } *(buf - 1) = '\0'; /* remove trailing dot */ return NULL; found: if (objidlen > 1) { while(*buf) buf++; *buf++ = '.'; *buf = '\0'; return_tree = get_symbol(objid + 1, objidlen - 1, subtree->child_list, buf); } if (return_tree != NULL) return return_tree; else return subtree; } static int lc_cmp(char *s1, char *s2) { char c1, c2; while(*s1 && *s2) { if (isupper(*s1)) c1 = tolower(*s1); else c1 = *s1; if (isupper(*s2)) c2 = tolower(*s2); else c2 = *s2; if (c1 != c2) return ((c1 - c2) > 0 ? 1 : -1); s1++; s2++; } if (*s1) return -1; if (*s2) return 1; return 0; } /* * Clone of get_symbol that doesn't take a buffer argument */ static struct tree * get_tree(gulong *objid, int objidlen, struct tree *subtree) { struct tree *return_tree = NULL; for(; subtree; subtree = subtree->next_peer) { if (*objid == subtree->subid) goto found; } return NULL; found: if (objidlen > 1) return_tree = get_tree(objid + 1, objidlen - 1, subtree->child_list); if (return_tree != NULL) return return_tree; else return subtree; } static struct tree * find_node(char *name, struct tree *subtree) { struct tree *tp, *ret; for(tp = subtree; tp; tp = tp->next_peer) { if (!strcasecmp(name, tp->label)) return tp; ret = find_node(name, tp->child_list); if (ret) return ret; } return 0; } static int parse_subtree(struct tree *subtree, char *input, gulong *output, int *out_len) { char buf[128], *to = buf; guint32 subid = 0; struct tree *tp; /* * No empty strings. Can happen if there is a trailing '.' or two '.'s * in a row, i.e. "..". */ if ((*input == '\0') || (*input == '.')) return (0); if (isdigit(*input)) { /* * Read the number, then try to find it in the subtree. */ while (isdigit(*input)) { subid *= 10; subid += *input++ - '0'; } for (tp = subtree; tp; tp = tp->next_peer) { if (tp->subid == subid) goto found; } tp = NULL; } else { /* * Read the name into a buffer. */ while ((*input != '\0') && (*input != '.')) { *to++ = *input++; } *to = '\0'; /* * Find the name in the subtree; */ for (tp = subtree; tp; tp = tp->next_peer) { if (lc_cmp(tp->label, buf) == 0) { subid = tp->subid; goto found; } } /* * If we didn't find the entry, punt... */ if (tp == NULL) { fprintf(stderr, "sub-identifier not found: %s\n", buf); return (0); } } found: #if 0 if(subid > (guint32)) { fprintf(stderr, "sub-identifier too large: %s\n", buf); return (0); } #endif if ((*out_len)-- <= 0) { fprintf(stderr, "object identifier too long\n"); return (0); } *output++ = subid; if (*input != '.') return (1); if ((*out_len = parse_subtree(tp ? tp->child_list : NULL, ++input, output, out_len)) == 0) return (0); return (++*out_len); } int read_objid(char *input, gulong *output, int *out_len) { struct tree *root = Mib; gulong *op = output; char buf[512]; g_warning("Obsolete function read_objid called"); memset (buf, '\0', sizeof (buf)); if (*input == '.') input++; else { strcpy(buf, Prefix); strcat(buf, input); input = buf; } if (root == NULL) { fprintf(stderr, "Mib not initialized. Exiting.\n"); exit(1); } if ((*out_len = parse_subtree(root, input, output, out_len)) == 0) return (0); *out_len += output - op; return (1); } struct tree * get_mib_tree (gulong *objid, gint objidlen) { /* struct tree *root = Mib; */ return (get_tree (objid, objidlen, Mib)); } /* EOF */