/* * system.c */ /*********************************************************** Copyright 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. ******************************************************************/ /* * System dependent routines go here */ #include #include #include #include #if HAVE_UNISTD_H #include #endif #if HAVE_STDLIB_H #include #endif #if TIME_WITH_SYS_TIME # ifdef WIN32 # include # else # include # endif # include #else # if HAVE_SYS_TIME_H # include # else # include # endif #endif #include #if HAVE_NETINET_IN_H #include #endif #if HAVE_WINSOCK_H #include #endif #if HAVE_SYS_SOCKET_H #include #endif #if HAVE_NET_IF_H #include #endif #if HAVE_SYS_SOCKIO_H #include #endif #if HAVE_SYS_IOCTL_H #include #endif #ifdef HAVE_NLIST_H #include #endif #if HAVE_SYS_FILE_H #include #endif #if HAVE_KSTAT_H #include #endif #if HAVE_SYS_PARAM_H #include #endif #if HAVE_SYS_SYSCTL_H #include #endif #if HAVE_STRING_H #include #else #include #endif #if HAVE_DMALLOC_H #include #endif #ifdef HAVE_SYS_STAT_H #include #endif #if defined(hpux10) || defined(hpux11) #include #endif #include #include #include #include /* for "internal" definitions */ #include #ifndef IFF_LOOPBACK # define IFF_LOOPBACK 0 #endif #ifdef INADDR_LOOPBACK # define LOOPBACK INADDR_LOOPBACK #else # define LOOPBACK 0x7f000001 #endif /* * ********************************************* */ #ifdef WIN32 # define WIN32_LEAN_AND_MEAN # define WIN32IO_IS_STDIO # define PATHLEN 1024 # include # include /* * The idea here is to read all the directory names into a string table * * (separated by nulls) and when one of the other dir functions is called * * return the pointer to the current file name. */ DIR * opendir(const char *filename) { DIR *p; long len; long idx; char scannamespc[PATHLEN]; char *scanname = scannamespc; struct stat sbuf; WIN32_FIND_DATA FindData; HANDLE fh; /* * check to see if filename is a directory */ if (stat(filename, &sbuf) < 0 || sbuf.st_mode & S_IFDIR == 0) { return NULL; } /* * get the file system characteristics */ /* * if(GetFullPathName(filename, SNMP_MAXPATH, root, &dummy)) { * * if(dummy = strchr(root, '\\')) * * *++dummy = '\0'; * * if(GetVolumeInformation(root, volname, SNMP_MAXPATH, &serial, * * &maxname, &flags, 0, 0)) { * * downcase = !(flags & FS_CASE_IS_PRESERVED); * * } * * } * * else { * * downcase = TRUE; * * } */ /* * Create the search pattern */ strcpy(scanname, filename); if (strchr("/\\", *(scanname + strlen(scanname) - 1)) == NULL) strcat(scanname, "/*"); else strcat(scanname, "*"); /* * do the FindFirstFile call */ fh = FindFirstFile(scanname, &FindData); if (fh == INVALID_HANDLE_VALUE) { return NULL; } /* * Get us a DIR structure */ p = (DIR *) malloc(sizeof(DIR)); /* * Newz(1303, p, 1, DIR); */ if (p == NULL) return NULL; /* * now allocate the first part of the string table for * * the filenames that we find. */ idx = strlen(FindData.cFileName) + 1; p->start = (char *) malloc(idx); /* * New(1304, p->start, idx, char); */ if (p->start == NULL) { free(p); return NULL; } strcpy(p->start, FindData.cFileName); /* * if(downcase) * * strlwr(p->start); */ p->nfiles = 0; /* * loop finding all the files that match the wildcard * * (which should be all of them in this directory!). * * the variable idx should point one past the null terminator * * of the previous string found. */ while (FindNextFile(fh, &FindData)) { len = strlen(FindData.cFileName); /* * bump the string table size by enough for the * * new name and it's null terminator */ p->start = (char *) realloc((void *) p->start, idx + len + 1); /* * Renew(p->start, idx+len+1, char); */ if (p->start == NULL) { free(p); return NULL; } strcpy(&p->start[idx], FindData.cFileName); /* * if (downcase) * * strlwr(&p->start[idx]); */ p->nfiles++; idx += len + 1; } FindClose(fh); p->size = idx; p->curr = p->start; return p; } /* * Readdir just returns the current string pointer and bumps the * * string pointer to the nDllExport entry. */ struct direct * readdir(DIR * dirp) { int len; static int dummy = 0; if (dirp->curr) { /* * first set up the structure to return */ len = strlen(dirp->curr); strcpy(dirp->dirstr.d_name, dirp->curr); dirp->dirstr.d_namlen = len; /* * Fake an inode */ dirp->dirstr.d_ino = dummy++; /* * Now set up for the nDllExport call to readdir */ dirp->curr += len + 1; if (dirp->curr >= (dirp->start + dirp->size)) { dirp->curr = NULL; } return &(dirp->dirstr); } else return NULL; } /* * free the memory allocated by opendir */ int closedir(DIR * dirp) { free(dirp->start); free(dirp); return 1; } #ifndef HAVE_GETTIMEOFDAY int gettimeofday(struct timeval *tv, struct timezone *tz) { struct _timeb timebuffer; _ftime(&timebuffer); tv->tv_usec = timebuffer.millitm * 1000; tv->tv_sec = timebuffer.time; return (0); } #endif /* !HAVE_GETTIMEOFDAY */ in_addr_t get_myaddr(void) { char local_host[130]; int result; LPHOSTENT lpstHostent; SOCKADDR_IN in_addr, remote_in_addr; SOCKET hSock; int nAddrSize = sizeof(SOCKADDR); in_addr.sin_addr.s_addr = INADDR_ANY; result = gethostname(local_host, sizeof(local_host)); if (result == 0) { lpstHostent = gethostbyname((LPSTR) local_host); if (lpstHostent) { in_addr.sin_addr.s_addr = *((u_long FAR *) (lpstHostent->h_addr)); return ((in_addr_t) in_addr.sin_addr.s_addr); } } /* * if we are here, than we don't have host addr */ hSock = socket(AF_INET, SOCK_DGRAM, 0); if (hSock != INVALID_SOCKET) { /* * connect to any port and address */ remote_in_addr.sin_family = AF_INET; remote_in_addr.sin_port = htons(IPPORT_ECHO); remote_in_addr.sin_addr.s_addr = inet_addr("128.22.33.11"); result = connect(hSock, (LPSOCKADDR) & remote_in_addr, sizeof(SOCKADDR)); if (result != SOCKET_ERROR) { /* * get local ip address */ getsockname(hSock, (LPSOCKADDR) & in_addr, (int FAR *) &nAddrSize); } closesocket(hSock); } return ((in_addr_t) in_addr.sin_addr.s_addr); } long get_uptime(void) { long return_value = 0; DWORD buffersize = (sizeof(PERF_DATA_BLOCK) + sizeof(PERF_OBJECT_TYPE)), type = REG_EXPAND_SZ; PPERF_DATA_BLOCK perfdata = NULL; /* * min requirement is one PERF_DATA_BLOCK plus one PERF_OBJECT_TYPE */ perfdata = (PPERF_DATA_BLOCK) malloc(buffersize); memset(perfdata, 0, buffersize); RegQueryValueEx(HKEY_PERFORMANCE_DATA, "Global", NULL, &type, (LPBYTE) perfdata, &buffersize); /* * we can not rely on the return value since there is always more so * we check the signature */ if (wcsncmp(perfdata->Signature, L"PERF", 4) == 0) { /* * signature ok, and all we need is in the in the PERF_DATA_BLOCK */ return_value = (long) ((perfdata->PerfTime100nSec.QuadPart / (LONGLONG) 100000)); } else return_value = GetTickCount() / 10; RegCloseKey(HKEY_PERFORMANCE_DATA); free(perfdata); return return_value; } char * winsock_startup(void) { WORD VersionRequested; WSADATA stWSAData; int i; static char errmsg[100]; VersionRequested = MAKEWORD(1, 1); i = WSAStartup(VersionRequested, &stWSAData); if (i != 0) { if (i == WSAVERNOTSUPPORTED) sprintf(errmsg, "Unable to init. socket lib, does not support 1.1"); else { sprintf(errmsg, "Socket Startup error %d", i); } return (errmsg); } return (NULL); } void winsock_cleanup(void) { WSACleanup(); } #else /* ! WIN32 */ /*******************************************************************/ /* * XXX What if we have multiple addresses? Or no addresses for that matter? * XXX Could it be computed once then cached? Probably not worth it (not * used very often). */ in_addr_t get_myaddr(void) { int sd, i, lastlen = 0; struct ifconf ifc; struct ifreq *ifrp = NULL; in_addr_t addr; char *buf = NULL; if ((sd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { return 0; } /* * Cope with lots of interfaces and brokenness of ioctl SIOCGIFCONF on * some platforms; see W. R. Stevens, ``Unix Network Programming Volume * I'', p.435. */ for (i = 8;; i += 8) { buf = (char *) calloc(i, sizeof(struct ifreq)); if (buf == NULL) { close(sd); return 0; } ifc.ifc_len = i * sizeof(struct ifreq); ifc.ifc_buf = (caddr_t) buf; if (ioctl(sd, SIOCGIFCONF, (char *) &ifc) < 0) { if (errno != EINVAL || lastlen != 0) { /* * Something has gone genuinely wrong. */ free(buf); close(sd); return 0; } /* * Otherwise, it could just be that the buffer is too small. */ } else { if (ifc.ifc_len == lastlen) { /* * The length is the same as the last time; we're done. */ break; } lastlen = ifc.ifc_len; } free(buf); } for (ifrp = ifc.ifc_req; (char *)ifrp < (char *)ifc.ifc_req + ifc.ifc_len; #ifdef STRUCT_SOCKADDR_HAS_SA_LEN ifrp = (struct ifreq *)(((char *) ifrp) + sizeof(ifrp->ifr_name) + ifrp->ifr_addr.sa_len) #else ifrp++ #endif ) { if (ifrp->ifr_addr.sa_family != AF_INET) { continue; } addr = ((struct sockaddr_in *) &(ifrp->ifr_addr))->sin_addr.s_addr; if (ioctl(sd, SIOCGIFFLAGS, (char *) ifrp) < 0) { continue; } if ((ifrp->ifr_flags & IFF_UP) #ifdef IFF_RUNNING && (ifrp->ifr_flags & IFF_RUNNING) #endif /* IFF_RUNNING */ && !(ifrp->ifr_flags & IFF_LOOPBACK) && addr != LOOPBACK) { /* * I *really* don't understand why this is necessary. Perhaps for * some broken platform? Leave it for now. JBPN */ #ifdef SYS_IOCTL_H_HAS_SIOCGIFADDR if (ioctl(sd, SIOCGIFADDR, (char *) ifrp) < 0) { continue; } addr = ((struct sockaddr_in *) &(ifrp->ifr_addr))->sin_addr. s_addr; #endif free(buf); close(sd); return addr; } } free(buf); close(sd); return 0; } #if !defined(solaris2) && !defined(linux) && !defined(cygwin) /* * Returns boottime in centiseconds(!). * Caches this for future use. */ long get_boottime(void) { static long boottime_csecs = 0; #if defined(hpux10) || defined(hpux11) struct pst_static pst_buf; #else struct timeval boottime; #ifdef CAN_USE_SYSCTL int mib[2]; size_t len; #else int kmem; static struct nlist nl[] = { #if !defined(hpux) {(char *) "_boottime"}, #else {(char *) "boottime"}, #endif {(char *) ""} }; #endif /* CAN_USE_SYSCTL */ #endif /* hpux10 || hpux 11 */ if (boottime_csecs != 0) return (boottime_csecs); #if defined(hpux10) || defined(hpux11) pstat_getstatic(&pst_buf, sizeof(struct pst_static), 1, 0); boottime_csecs = pst_buf.boot_time * 100; #else #ifdef CAN_USE_SYSCTL mib[0] = CTL_KERN; mib[1] = KERN_BOOTTIME; len = sizeof(boottime); sysctl(mib, 2, &boottime, &len, NULL, NULL); boottime_csecs = (boottime.tv_sec * 100) + (boottime.tv_usec / 10000); #else /* CAN_USE_SYSCTL */ if ((kmem = open("/dev/kmem", 0)) < 0) return 0; nlist(KERNEL_LOC, nl); if (nl[0].n_type == 0) { close(kmem); return 0; } lseek(kmem, (long) nl[0].n_value, L_SET); read(kmem, &boottime, sizeof(boottime)); close(kmem); boottime_csecs = (boottime.tv_sec * 100) + (boottime.tv_usec / 10000); #endif /* CAN_USE_SYSCTL */ #endif /* hpux10 || hpux 11 */ return (boottime_csecs); } #endif /* * Returns uptime in centiseconds(!). */ long get_uptime(void) { #if !defined(solaris2) && !defined(linux) && !defined(cygwin) struct timeval now; long boottime_csecs, nowtime_csecs; boottime_csecs = get_boottime(); if (boottime_csecs == 0) return 0; gettimeofday(&now, (struct timezone *) 0); nowtime_csecs = (now.tv_sec * 100) + (now.tv_usec / 10000); return (nowtime_csecs - boottime_csecs); #endif #ifdef solaris2 kstat_ctl_t *ksc = kstat_open(); kstat_t *ks; kid_t kid; kstat_named_t *named; u_long lbolt = 0; if (ksc) { ks = kstat_lookup(ksc, "unix", -1, "system_misc"); if (ks) { kid = kstat_read(ksc, ks, NULL); if (kid != -1) { named = kstat_data_lookup(ks, "lbolt"); if (named) { #ifdef KSTAT_DATA_INT32 lbolt = named->value.ul; #else lbolt = named->value.ul; #endif } } } kstat_close(ksc); } return lbolt; #endif /* solaris2 */ #ifdef linux FILE *in = fopen("/proc/uptime", "r"); long uptim = 0, a, b; if (in) { if (2 == fscanf(in, "%ld.%ld", &a, &b)) uptim = a * 100 + b; fclose(in); } return uptim; #endif /* linux */ #ifdef cygwin return (0); /* not implemented */ #endif } #endif /* ! WIN32 */ /*******************************************************************/ #ifndef HAVE_STRNCASECMP /* * test for NULL pointers before and NULL characters after * * comparing possibly non-NULL strings. * * WARNING: This function does NOT check for array overflow. */ int strncasecmp(const char *s1, const char *s2, size_t nch) { size_t ii; int res = -1; if (!s1) { if (!s2) return 0; return (-1); } if (!s2) return (1); for (ii = 0; (ii < nch) && *s1 && *s2; ii++, s1++, s2++) { res = (int) (tolower(*s1) - tolower(*s2)); if (res != 0) break; } if (ii == nch) { s1--; s2--; } if (!*s1) { if (!*s2) return 0; return (-1); } if (!*s2) return (1); return (res); } int strcasecmp(const char *s1, const char *s2) { return strncasecmp(s1, s2, 1000000); } #endif /* HAVE_STRNCASECMP */ #ifndef HAVE_STRDUP char * strdup(const char *src) { int len; char *dst; len = strlen(src) + 1; if ((dst = (char *) malloc(len)) == NULL) return (NULL); strcpy(dst, src); return (dst); } #endif /* HAVE_STRDUP */ #ifndef HAVE_SETENV int setenv(const char *name, const char *value, int overwrite) { char *cp; int ret; if (overwrite == 0) { if (getenv(name)) return 0; } cp = (char *) malloc(strlen(name) + strlen(value) + 2); if (cp == NULL) return -1; sprintf(cp, "%s=%s", name, value); ret = putenv(cp); #ifdef WIN32 free(cp); #endif return ret; } #endif /* HAVE_SETENV */ int calculate_time_diff(struct timeval *now, struct timeval *then) { struct timeval tmp, diff; memcpy(&tmp, now, sizeof(struct timeval)); tmp.tv_sec--; tmp.tv_usec += 1000000L; diff.tv_sec = tmp.tv_sec - then->tv_sec; diff.tv_usec = tmp.tv_usec - then->tv_usec; if (diff.tv_usec > 1000000L) { diff.tv_usec -= 1000000L; diff.tv_sec++; } return ((diff.tv_sec * 100) + (diff.tv_usec / 10000)); } #ifndef HAVE_STRCASESTR /* * only glibc2 has this. */ char * strcasestr(const char *haystack, const char *needle) { const char *cp1 = haystack, *cp2 = needle; const char *cx; int tstch1, tstch2; /* * printf("looking for '%s' in '%s'\n", needle, haystack); */ if (cp1 && cp2 && *cp1 && *cp2) for (cp1 = haystack, cp2 = needle; *cp1;) { cx = cp1; cp2 = needle; do { /* * printf("T'%c' ", *cp1); */ if (!*cp2) { /* found the needle */ /* * printf("\nfound '%s' in '%s'\n", needle, cx); */ return (char *) cx; } if (!*cp1) break; tstch1 = toupper(*cp1); tstch2 = toupper(*cp2); if (tstch1 != tstch2) break; /* * printf("M'%c' ", *cp1); */ cp1++; cp2++; } while (1); if (*cp1) cp1++; } /* * printf("\n"); */ if (cp1 && *cp1) return (char *) cp1; return NULL; } #endif int mkdirhier(const char *pathname, mode_t mode, int skiplast) { struct stat sbuf; char *ourcopy = strdup(pathname); char *entry; char buf[SNMP_MAXPATH]; entry = strtok(ourcopy, "/"); buf[0] = '\0'; /* * check to see if filename is a directory */ while (entry) { strcat(buf, "/"); strcat(buf, entry); entry = strtok(NULL, "/"); if (entry == NULL && skiplast) break; if (stat(buf, &sbuf) < 0) { /* * DNE, make it */ snmp_log(LOG_INFO, "Creating directory: %s\n", buf); #ifdef WIN32 CreateDirectory(buf, NULL); #else if (mkdir(buf, mode) == -1) { free(ourcopy); return SNMPERR_GENERR; } #endif } else { /* * exists, is it a file? */ if ((sbuf.st_mode & S_IFDIR) == 0) { /* * ack! can't make a directory on top of a file */ free(ourcopy); return SNMPERR_GENERR; } } } free(ourcopy); return SNMPERR_SUCCESS; }