static void opd_26_init(void) { size_t i; size_t opd_buf_size; opd_create_vmlinux(vmlinux, kernel_range); opd_buf_size = opd_read_fs_int("/dev/oprofile/", "buffer_size", 1); kernel_pointer_size = opd_read_fs_int("/dev/oprofile/", "pointer_size", 1); s_buf_bytesize = opd_buf_size * kernel_pointer_size; sbuf = xmalloc(s_buf_bytesize); opd_reread_module_info(); for (i = 0; i < OPD_MAX_STATS; i++) opd_stats[i] = 0; perfmon_init(); cookie_init(); sfile_init(); anon_init(); /* must be /after/ perfmon_init() at least */ if (atexit(clean_exit)) { perfmon_exit(); perror("oprofiled: couldn't set exit cleanup: "); exit(EXIT_FAILURE); } }
int anon_unit_test() { struct in_addr inp; extern FILE *anon_info; anon_init("internal.net", stderr); if (inet_aton("64.104.192.129", &inp) == 0) { fprintf(anon_info, "error: could not convert address\n"); } if (ipv4_addr_needs_anonymization(&inp) != 1) { fprintf(anon_info, "error in anon_unit_test\n"); } else { fprintf(anon_info, "passed\n"); } return ok; }
/** * This is the first real C function ever called. It performs a lot of * hardware-specific initialization, then creates a pseudo-context to * execute the bootstrap function in. */ void kmain() { GDB_CALL_HOOK(boot); dbg_init(); dbgq(DBG_CORE, "Kernel binary:\n"); dbgq(DBG_CORE, " text: 0x%p-0x%p\n", &kernel_start_text, &kernel_end_text); dbgq(DBG_CORE, " data: 0x%p-0x%p\n", &kernel_start_data, &kernel_end_data); dbgq(DBG_CORE, " bss: 0x%p-0x%p\n", &kernel_start_bss, &kernel_end_bss); page_init(); pt_init(); slab_init(); pframe_init(); acpi_init(); apic_init(); pci_init(); intr_init(); gdt_init(); /* initialize slab allocators */ #ifdef __VM__ anon_init(); shadow_init(); #endif vmmap_init(); proc_init(); kthread_init(); #ifdef __DRIVERS__ bytedev_init(); blockdev_init(); #endif void *bstack = page_alloc(); pagedir_t *bpdir = pt_get(); KASSERT(NULL != bstack && "Ran out of memory while booting."); context_setup(&bootstrap_context, bootstrap, 0, NULL, bstack, PAGE_SIZE, bpdir); context_make_active(&bootstrap_context); panic("\nReturned to kmain()!!!\n"); }
static void opd_26_init(void) { size_t i; size_t opd_buf_size; unsigned long long start_time = 0ULL; struct timeval tv; opd_create_vmlinux(vmlinux, kernel_range); opd_create_xen(xenimage, xen_range); opd_buf_size = opd_read_fs_int("/dev/oprofile/", "buffer_size", 1); kernel_pointer_size = opd_read_fs_int("/dev/oprofile/", "pointer_size", 1); s_buf_bytesize = opd_buf_size * kernel_pointer_size; sbuf = xmalloc(s_buf_bytesize); opd_reread_module_info(); for (i = 0; i < OPD_MAX_STATS; i++) opd_stats[i] = 0; perfmon_init(); cookie_init(); sfile_init(); anon_init(); /* must be /after/ perfmon_init() at least */ if (atexit(clean_exit)) { perfmon_exit(); perror("oprofiled: couldn't set exit cleanup: "); exit(EXIT_FAILURE); } /* trigger kernel module setup before returning control to opcontrol */ opd_open_files(); gettimeofday(&tv, NULL); start_time = 0ULL; start_time = tv.tv_sec; sprintf(start_time_str, "%llu", start_time); }
/** * This is the first real C function ever called. It performs a lot of * hardware-specific initialization, then creates a pseudo-context to * execute the bootstrap function in. */ void kmain() { GDB_CALL_HOOK(boot); dbg_init(); dbgq(DBG_CORE, "Kernel binary:\n"); dbgq(DBG_CORE, " text: 0x%p-0x%p\n", &kernel_start_text, &kernel_end_text); dbgq(DBG_CORE, " data: 0x%p-0x%p\n", &kernel_start_data, &kernel_end_data); dbgq(DBG_CORE, " bss: 0x%p-0x%p\n", &kernel_start_bss, &kernel_end_bss); page_init(); pt_init(); slab_init(); pframe_init(); acpi_init(); apic_init(); pci_init(); intr_init(); gdt_init(); /* initialize slab allocators */ #ifdef __VM__ anon_init(); shadow_init(); #endif vmmap_init(); proc_init(); kthread_init(); #ifdef __DRIVERS__ bytedev_init(); blockdev_init(); #endif void *bstack = page_alloc(); pagedir_t *bpdir = pt_get(); KASSERT(NULL != bstack && "Ran out of memory while booting."); /* This little loop gives gdb a place to synch up with weenix. In the * past the weenix command started qemu was started with -S which * allowed gdb to connect and start before the boot loader ran, but * since then a bug has appeared where breakpoints fail if gdb connects * before the boot loader runs. See * * https://bugs.launchpad.net/qemu/+bug/526653 * * This loop (along with an additional command in init.gdb setting * gdb_wait to 0) sticks weenix at a known place so gdb can join a * running weenix, set gdb_wait to zero and catch the breakpoint in * bootstrap below. See Config.mk for how to set GDBWAIT correctly. * * DANGER: if GDBWAIT != 0, and gdb is not running, this loop will never * exit and weenix will not run. Make SURE the GDBWAIT is set the way * you expect. */ while (gdb_wait) ; context_setup(&bootstrap_context, bootstrap, 0, NULL, bstack, PAGE_SIZE, bpdir); context_make_active(&bootstrap_context); panic("\nReturned to kmain()!!!\n"); }
int main(int argc, char **argv) { char errbuf[PCAP_ERRBUF_SIZE]; bpf_u_int32 net = PCAP_NETMASK_UNKNOWN; char *filter_exp = "ip"; struct bpf_program fp; int i; int c; int opt_count = 0; int tmp_ret; char *ifile = NULL; unsigned int file_count = 0; char filename[MAX_FILENAME_LEN]; /* output file */ char pcap_filename[MAX_FILENAME_LEN*2]; /* output file */ char *cli_interface = NULL; char *cli_filename = NULL; char *config_file = NULL; struct interface ifl[IFL_MAX]; int num_interfaces; char *capture_if; unsigned int file_base_len = 0; unsigned int num_cmds = 0; unsigned int done_with_options = 0; struct stat sb; DIR *dir; struct dirent *ent; enum operating_mode mode = mode_none; /* sanity check sizeof() expectations */ if (data_sanity_check() != ok) { fprintf(stderr, "error: failed data size sanity check\n"); } /* sanity check arguments */ for (i=1; i<argc; i++) { if (strchr(argv[i], '=')) { if (done_with_options) { fprintf(stderr, "error: option (%s) found after filename (%s)\n", argv[i], argv[i-1]); exit(EXIT_FAILURE); } } else { done_with_options = 1; } } /* * set "info" to stderr; this output stream is used for * debug/info/warnings/errors. setting it here is actually * defensive coding, just in case some function that writes to * "info" gets invoked before info gets set below (if we are in * online mode, it will be set to a log file) */ info = stderr; /* in debug mode, turn off output buffering */ #if P2F_DEBUG setvbuf(stderr, NULL, _IONBF, 0); setbuf(stdout, NULL); #endif /* * set configuration from command line arguments that contain * LHS=RHS commands, then update argv/argc so that those arguments * are not subjected to any further processing */ num_cmds = config_set_from_argv(&config, argv, argc); argv += num_cmds; argc -= num_cmds; /* process command line options */ while (1) { int option_index = 0; struct option long_options[] = { {"help", no_argument, 0, 'h' }, {"xconfig", required_argument, 0, 'x' }, {0, 0, 0, 0 } }; c = getopt_long(argc, argv, "hx:", long_options, &option_index); if (c == -1) break; switch (c) { case 'x': config_file = optarg; opt_count++; break; case 'h': default: return usage(argv[0]); } opt_count++; } if (config_file) { /* * read in configuration from file; note that if we don't read in * a file, then the config structure will use the static defaults * set when it was declared */ config_set_from_file(&config, config_file); } if (config_file || (num_cmds != 0)) { /* * set global variables as needed, if we got some configuration * commands from the config_file or from command line arguments */ bidir = config.bidir; include_zeroes = config.include_zeroes; byte_distribution = config.byte_distribution; report_entropy = config.report_entropy; report_wht = config.report_wht; report_hd = config.report_hd; include_tls = config.include_tls; include_classifier = config.include_classifier; output_level = config.output_level; report_idp = config.idp; report_dns = config.dns; salt_algo = config.type; nfv9_capture_port = config.nfv9_capture_port; if (config.bpf_filter_exp) { filter_exp = config.bpf_filter_exp; } } /* * allow some command line variables to override the config file */ if (cli_filename) { /* * output filename provided on command line supersedes that * provided in the config file */ config.filename = cli_filename; } if (cli_interface) { /* * interface provided on command line supersedes that provided * in the config file */ config.interface = cli_interface; } if (config.filename) { strncpy(filename, config.filename, MAX_FILENAME_LEN); } /* * set the operating mode to online or offline */ if (config.interface != NULL && strcmp(config.interface, NULL_KEYWORD)) { mode = mode_online; } else { mode = mode_offline; } /* * if we are doing a live capture, get interface list, and set "info" * output stream to log file */ if (mode == mode_online) { if (config.logfile && strcmp(config.logfile, NULL_KEYWORD)) { info = fopen(config.logfile, "a"); if (info == NULL) { fprintf(stderr, "error: could not open log file %s\n", config.logfile); return -1; } fprintf(stderr, "writing errors/warnings/info/debug output to %s\n", config.logfile); } /* * cheerful message to indicate the start of a new run of the * daemon */ fprintf(info, "--- %s initialization ---\n", argv[0]); flocap_stats_output(info); num_interfaces = interface_list_get(ifl); if (num_interfaces == 0) { fprintf(info, "warning: could not obtain inferface information\n"); } else { for(i=0; i<num_interfaces; i++) { unsigned char *a = ifl[i].mac_addr; fprintf(info, "interface: %8s\tstatus: %s\t%02x%02x%02x%02x%02x%02x\n", ifl[i].name, (ifl[i].active ? "up" : "down"), a[0], a[1], a[2], a[3], a[4], a[5]); } } } else { info = stderr; } /* * report on running configuration (which may depend on the command * line, the config file, or both) */ config_print(info, &config); /* * configure labeled subnets (which uses a radix trie to identify * addresses that match subnets associated with labels) */ if (config.num_subnets > 0) { attr_flags subnet_flag; enum status err; rt = radix_trie_alloc(); if (rt == NULL) { fprintf(info, "could not allocate memory\n"); } err = radix_trie_init(rt); if (err != ok) { fprintf(stderr, "error: could not initialize subnet labels (radix_trie)\n"); } for (i=0; i<config.num_subnets; i++) { char label[LINEMAX], subnet_file[LINEMAX]; int num; num = sscanf(config.subnet[i], "%[^=:]:%[^=:\n#]", label, subnet_file); if (num != 2) { fprintf(info, "error: could not parse command \"%s\" into form label:subnet\n", config.subnet[i]); exit(1); } subnet_flag = radix_trie_add_attr_label(rt, label); if (subnet_flag == 0) { fprintf(info, "error: count not add subnet label %s to radix_trie\n", label); exit(1); } err = radix_trie_add_subnets_from_file(rt, subnet_file, subnet_flag, info); if (err != ok) { fprintf(info, "error: could not add labeled subnets from file %s\n", subnet_file); exit(1); } } fprintf(info, "configured labeled subnets (radix_trie), using %u bytes of memory\n", get_rt_mem_usage()); } if (config.anon_addrs_file != NULL) { if (anon_init(config.anon_addrs_file, info) == failure) { fprintf(info, "error: could not initialize anonymization subnets from file %s\n", config.anon_addrs_file); return -1; } } if (config.filename != NULL) { char *outputdir; /* * set output directory */ if (config.outputdir) { outputdir = config.outputdir; } else { outputdir = "."; } /* * generate an "auto" output file name, based on the MAC address * and the current time, if we are "auto" configured */ if (strncmp(config.filename, "auto", strlen("auto")) == 0) { if (mode == mode_online) { unsigned char *addr = ifl[0].mac_addr; time_t now = time(0); struct tm *t = localtime(&now); snprintf(filename, MAX_FILENAME_LEN, "%s/flocap-%02x%02x%02x%02x%02x%02x-h%d-m%d-s%d-D%d-M%d-Y%d-%s-", outputdir, addr[0], addr[1], addr[2], addr[3], addr[4], addr[5], t->tm_hour, t->tm_min, t->tm_sec, t->tm_mday, t->tm_mon, t->tm_year + 1900, t->tm_zone); } else { fprintf(info, "error: cannot use \"output = auto\" with no interface specified; use -o or -l options\n"); return usage(argv[0]); } fprintf(info, "auto generated output filename: %s\n", filename); } else { /* set output file based on command line or config file */ if (cli_filename) { strncpy(filename, config.filename, MAX_FILENAME_LEN); } else { char tmp_filename[MAX_FILENAME_LEN]; strncpy(tmp_filename, filename, MAX_FILENAME_LEN); snprintf(filename, MAX_FILENAME_LEN, "%s/%s", outputdir, tmp_filename); } } file_base_len = strlen(filename); if (config.max_records != 0) { snprintf(filename + file_base_len, MAX_FILENAME_LEN - file_base_len, "%d", file_count); } output = fopen(filename, "w"); if (output == NULL) { fprintf(info, "error: could not open output file %s (%s)\n", filename, strerror(errno)); return -1; } } else { output = stdout; } if (ifile != NULL) { opt_count--; argv[1+opt_count] = ifile; } if (mode == mode_online) { /* live capture */ int linktype; /* * sanity check: we can't be in both offline mode and online mode * simultaneously */ if ((argc-opt_count > 1) || (ifile != NULL)) { fprintf(info, "error: both interface (%s) and pcap input file (%s) specified\n", config.interface, argv[1+opt_count]); return usage(argv[0]); } anon_print_subnets(info); signal(SIGINT, sig_close); /* Ctl-C causes graceful shutdown */ signal(SIGTERM, sig_close); // signal(SIGHUP, sig_reload); // signal(SIGTSTP, sig_reload); signal(SIGQUIT, sig_reload); /* Ctl-\ causes an info dump */ /* * set capture interface as needed */ if (strncmp(config.interface, "auto", strlen("auto")) == 0) { capture_if = ifl[0].name; fprintf(info, "starting capture on interface %s\n", ifl[0].name); } else { capture_if = config.interface; } errbuf[0] = 0; handle = pcap_open_live(capture_if, 65535, config.promisc, 10000, errbuf); if (handle == NULL) { fprintf(info, "could not open device %s: %s\n", capture_if, errbuf); return -1; } if (errbuf[0] != 0) { fprintf(stderr, "warning: %s\n", errbuf); } /* verify that we can handle the link layer headers */ linktype = pcap_datalink(handle); if (linktype != DLT_EN10MB) { fprintf(info, "device %s has unsupported linktype (%d)\n", capture_if, linktype); return -2; } if (filter_exp) { /* compile the filter expression */ if (pcap_compile(handle, &fp, filter_exp, 0, net) == -1) { fprintf(info, "error: could not parse filter %s: %s\n", filter_exp, pcap_geterr(handle)); return -3; } /* apply the compiled filter */ if (pcap_setfilter(handle, &fp) == -1) { fprintf(info, "error: could not install filter %s: %s\n", filter_exp, pcap_geterr(handle)); return -4; } } /* * run as daemon, if so configured, without closing stderr and * stdout, and without changing the working directory */ if (config.daemon) { daemon(1, 1); } /* * flush "info" output stream to ensure log file accuracy */ fflush(info); /* * write out JSON preamble */ fprintf(output, "{\n"); config_print_json(output, &config); fprintf(output, "\"appflows\": [\n"); while(1) { struct timeval time_of_day, inactive_flow_cutoff; /* loop over packets captured from interface */ pcap_loop(handle, NUM_PACKETS_IN_LOOP, process_packet, NULL); if (output_level > none) { fprintf(output, "# pcap processing loop done\n"); } if (config.report_exe) { /* * periodically obtain host/process flow data */ if (get_host_flow_data() != 0) { fprintf(info, "warning: could not obtain host/process flow data\n"); } } /* * periodically report on progress */ if ((flocap_stats_get_num_packets() % NUM_PACKETS_BETWEEN_STATS_OUTPUT) == 0) { flocap_stats_output(info); } /* print out inactive flows */ gettimeofday(&time_of_day, NULL); timer_sub(&time_of_day, &time_window, &inactive_flow_cutoff); flow_record_list_print_json(&inactive_flow_cutoff); if (config.filename) { /* rotate output file if needed */ if (config.max_records && (records_in_file > config.max_records)) { /* * write JSON postamble */ fprintf(output, "\n] }\n"); fclose(output); if (config.upload_servername) { upload_file(filename, config.upload_servername, config.upload_key, config.retain_local); } // printf("records: %d\tmax_records: %d\n", records_in_file, config.max_records); file_count++; if (config.max_records != 0) { snprintf(filename + file_base_len, MAX_FILENAME_LEN - file_base_len, "%d", file_count); } output = fopen(filename, "w"); if (output == NULL) { perror("error: could not open output file"); return -1; } records_in_file = 0; fprintf(output, "{ \"appflows\": [\n"); } /* * flush out buffered debug/info/log messages on the "info" stream */ fflush(info); } // fflush(output); } fprintf(output, "\n] }\n"); if (filter_exp) { pcap_freecode(&fp); } pcap_close(handle); } else { /* mode = mode_offline */ if ((argc-opt_count <= 1) && (ifile == NULL)) { fprintf(stderr, "error: missing pcap file name(s)\n"); return usage(argv[0]); } fprintf(output, "{\n"); config_print_json(output, &config); fprintf(output, "\"appflows\": [\n"); flow_record_list_init(); flocap_stats_timer_init(); for (i=1+opt_count; i<argc; i++) { if (stat(argv[i], &sb) == 0 && S_ISDIR(sb.st_mode)) { if ((dir = opendir(argv[i])) != NULL) { while ((ent = readdir(dir)) != NULL) { if (strcmp(ent->d_name, ".") && strcmp(ent->d_name, "..")) { strcpy(pcap_filename, argv[i]); if (pcap_filename[strlen(pcap_filename)-1] != '/') { strcat(pcap_filename, "/"); } strcat(pcap_filename, ent->d_name); tmp_ret = process_pcap_file(pcap_filename, filter_exp, &net, &fp); if (tmp_ret < 0) { return tmp_ret; } } } closedir(dir); } else { /* error opening directory*/ printf("Error opening directory: %s\n", argv[i]); return -1; } } else { tmp_ret = process_pcap_file(argv[i], filter_exp, &net, &fp); if (tmp_ret < 0) { return tmp_ret; } } } fprintf(output, "\n]"); fprintf(output, "\n}\n"); } flocap_stats_output(info); // config_print(info, &config); return 0; }
/* * main */ int main(int argc, char *argv[]) { struct pcap_hdr_s pcap_ghdr; unsigned char ibuf[PKT_SIZE_MAX]; struct pcap_pkt *pkt = (struct pcap_pkt *)&ibuf[0]; int ret, pkt_count = 0; FILE *ifp, *ofp = NULL; char fname[0xFF]; struct anon_keys anon; u_int16_t ethtype; strcpy(anon.passphase, "hoge"); if (argc != 2) { pr_err("Usage: ./pcappriv ./recv.pcap: argc=%d", argc); exit(EXIT_FAILURE); } ifp = fopen(argv[1], "rb"); if (ifp == NULL) { pr_err("cannot open pcap file: %s", argv[1]); exit(EXIT_FAILURE); } // check global pcap header ret = fread(ibuf, sizeof(struct pcap_hdr_s), 1, ifp); if (ret < 1) { pr_err("size of fread is too short: pcap_hdr_s"); exit(EXIT_FAILURE); } set_global_pcaphdr(&pcap_ghdr, (char *)ibuf); if ((pcap_ghdr.magic_number != PCAP_MAGIC) || (pcap_ghdr.version_major != PCAP_VERSION_MAJOR) || (pcap_ghdr.version_minor != PCAP_VERSION_MINOR)) { pr_err("unsupported pcap format:\n" "\tpcap_ghdr.magic_number=%X\n" "\tpcap_ghdr.version_major=%X\n" "\tpcap_ghdr.version_minor=%X", (int)pcap_ghdr.magic_number, (int)pcap_ghdr.version_major, (int)pcap_ghdr.version_minor); goto out; } // create output file strcpy(fname, "output.pcap"); ofp = fopen(fname, "wb"); if (ofp == NULL) { pr_err("cannot create output pcap file."); goto out; } ret = fwrite(&pcap_ghdr, sizeof(struct pcap_hdr_s), 1, ofp); if (ret < 1) { pr_err("cannot write ghdr."); goto out; } anon_init(&anon); cache_init(); set_signal(SIGINT); while (1) { // read pcap header ret = fread(ibuf, sizeof(struct pcaprec_hdr_s), 1, ifp); if (ret < 1) { pr_debug("size of fread is too short: pcaprec_hdr_s"); break; } // checking packet size if ((pkt->pcap.orig_len < PKT_SIZE_MIN) || (pkt->pcap.orig_len > PKT_SIZE_MAX)) { pr_warn("Skip a packet: frame original length=%d", (int)pkt->pcap.orig_len); fseek(ifp, pkt->pcap.incl_len, SEEK_CUR); // skip the packet data continue; } // read packet data ret = fread(ibuf+sizeof(struct pcaprec_hdr_s), pkt->pcap.incl_len, 1, ifp); if (ret < 1) { pr_err("size of fread is too short: pcap data"); break; } INFO_ETH(pkt); ethtype = ntohs(pkt->eth.ether_type); // ipv4 header if (ethtype == ETHERTYPE_IP) { INFO_IP4(pkt_count, &pkt->ip4); anon4(&anon, &pkt->ip4.ip_dst); anon4(&anon, &pkt->ip4.ip_src); // ipv6 header } else if (ethtype == ETHERTYPE_IPV6) { INFO_IP6(pkt_count, &pkt->ip6); anon6(&anon, &pkt->ip6.ip6_dst); anon6(&anon, &pkt->ip6.ip6_src); // ARP //} else if (ethtype == ETHERTYPE_ARP) { // set_arp(&pkt, (char *)ibuf + ETHER_HDR_LEN); // unknown Ethernet Type } else { // temp: debug pr_warn("EtherType: %04X is not supported", ethtype); } // write packet data ret = fwrite(ibuf, sizeof(struct pcaprec_hdr_s) + pkt->pcap.incl_len, 1, ofp); if (ret < 1) { pr_err("cannot write pcap file: packet data"); break; } ++pkt_count; if (caught_signal) break; } out: anon_release(&anon); cache_release(); fclose(ifp); fclose(ofp); return 0; }