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软件著作权源代码.docx

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#include <tybs/mandline、h> #include <tybs/dir、h> #include <tybs/entropy、h> #include <tybs/file、h> #include <tybs/hash、h> #include <tybs/os、h> #include <tybs/platform、h> #include <tybs/resource、h> #include <tybs/stdio、h> #include <tybs/string、h> #include <tybs/task、h> #include <tybs/timer、h> #include <tybs/util、h> #include <tybscc/result、h> #include <dns/dispatch、h> #include <dns/name、h> #include <dns/result、h> #include <dns/view、h> #include <dst/result、h> #define NS_MAIN 1 #include <named/ns_smf_globals、h> #endif #ifdef DLZ #include <dlz/dlz_drivers、h> #endif static tybs_boolean_tﻩwant_stats = TYBS_FALSE; static charﻩ program_name[TYBS_DIR_NAMEMAX] = "named"; static char absolute_conf]; static charﻩ saved_mand_line[512]; static charﻩﻩversion[512]; static unsigned intﻩmaxsocks = 0; void ns_main_earlywarning(const char *format, 、、、) { va_list args; ﻩva_start(args, format); ﻩif (ns_g_lctx != NULL) { ﻩ tybs_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL, ﻩﻩ    NS_LOGMODULE_MAIN, TYBS_LOG_WARNING, ﻩ    format, args); } else { ﻩﻩfprintf(stderr, "%s: ", program_name); ﻩvfprintf(stderr, format, args); ﻩﻩfprintf(stderr, "\n"); fflush(stderr); ﻩ} ﻩva_end(args); } Void ns_main_earlyfatal(const char *format, 、、、) { ﻩva_list args; va_start(args, format); ﻩif (ns_g_lctx != NULL) { ﻩ tybs_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL, ﻩﻩ      NS_LOGMODULE_MAIN, TYBS_LOG_CRITICAL, ﻩﻩﻩ   format, args); ﻩtybs_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, ﻩ      NS_LOGMODULE_MAIN, TYBS_LOG_CRITICAL, ﻩﻩ   "exiting (due to early fatal error)"); } else { ﻩfprintf(stderr, "%s: ", program_name); vfprintf(stderr, format, args); ﻩfprintf(stderr, "\n"); ﻩﻩfflush(stderr); ﻩ} va_end(args); ﻩexit(1); } static void assertion_failed(const char *file, int line, tybs_assertiontype_t type, ﻩﻩ const char *cond) { ﻩif (ns_g_lctx != NULL) { ﻩtybs_assertion_setcallback(NULL); ﻩtybs_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,     NS_LOGMODULE_MAIN, TYBS_LOG_CRITICAL, ﻩ     "%s:%d: %s(%s) failed", file, line, tybs_assertion_typetotext(type), cond); ﻩ tybs_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, ﻩﻩﻩ    NS_LOGMODULE_MAIN, TYBS_LOG_CRITICAL, ﻩ   "exiting (due to assertion failure)"); } else { ﻩﻩfprintf(stderr, "%s:%d: %s(%s) failed\n", ﻩ file, line, tybs_assertion_typetotext(type), cond); ﻩﻩfflush(stderr); } ﻩif (ns_g_coreok) ﻩ abort(); ﻩexit(1); } static void library_fatal_error(const char *file, int line, const char *format, ﻩ    va_list args) TYBS_FORMAT_PRINTF(3, 0); static void library_fatal_error(const char *file, int line, const char *format, ﻩﻩ va_list args) { if (ns_g_lctx != NULL) { ﻩﻩtybs_error_setfatal(NULL); ﻩtybs_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,    NS_LOGMODULE_MAIN, TYBS_LOG_CRITICAL, ﻩﻩﻩ   "%s:%d: fatal error:", file, line); ﻩ tybs_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL, ﻩ ﻩ    NS_LOGMODULE_MAIN, TYBS_LOG_CRITICAL, ﻩ   format, args); ﻩ tybs_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, TYBS_LOG_CRITICAL, ﻩﻩﻩ    "exiting (due to fatal error in library)"); } else { ﻩﻩfprintf(stderr, "%s:%d: fatal error: ", file, line); ﻩ vfprintf(stderr, format, args); ﻩfprintf(stderr, "\n"); ﻩﻩfflush(stderr); } if (ns_g_coreok) abort(); exit(1); } static void library_unexpected_error(const char *file, int line, const char *format, ﻩ ﻩ va_list args) TYBS_FORMAT_PRINTF(3, 0); static void library_unexpected_error(const char *file, int line, const char *format, ﻩﻩ  va_list args) { if (ns_g_lctx != NULL) { ﻩ tybs_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, ﻩ ﻩ   NS_LOGMODULE_MAIN, TYBS_LOG_ERROR, ﻩﻩ "%s:%d: unexpected error:", file, line); ﻩtybs_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL, ﻩﻩﻩ   NS_LOGMODULE_MAIN, TYBS_LOG_ERROR, ﻩ     format, args); ﻩ} else { ﻩ fprintf(stderr, "%s:%d: fatal error: ", file, line); vfprintf(stderr, format, args); fprintf(stderr, "\n"); ﻩﻩfflush(stderr); } } static void lwresd_usage(void) { fprintf(stderr, ﻩﻩ"usage: lwresd [-4|-6] [-c conffile | -C resolvconffile] " "[-d debuglevel]\n" ﻩ "       [-f|-g] [-n number_of_cpus] [-p port] " ﻩ"[-P listen-port] [-s]\n" "           [-t chrootdir] [-u username] [-i pidfile]\n" ﻩ"          [-m {usage|trace|record|size|mctx}]\n"); } static void usage(void) { if (ns_g_lwresdonly) { ﻩﻩlwresd_usage(); ﻩ return; } fprintf(stderr, ﻩﻩ"usage: named [-4|-6] [-c conffile] [-d debuglevel] " ﻩ "[-f|-g] [-n number_of_cpus]\n" "   [-p port] [-s] [-t chrootdir] [-u username]\n" ﻩﻩ"        [-m {usage|trace|record|size|mctx}]\n"); } static void save_mand_line(int argc, char *argv[]) { ﻩint i; ﻩchar *src; char *dst; char *eob; const char truncated[] = "、、、"; tybs_boolean_t quoted = TYBS_FALSE; ﻩdst = saved_mand_line; ﻩeob = saved_mand_line + sizeof(saved_mand_line); for (i = 1; i < argc && dst < eob; i++) { ﻩ *dst++ = ' '; ﻩﻩsrc = argv[i]; ﻩﻩwhile (*src != '\0' && dst < eob) { ﻩﻩ if (quoted || isalnum(*src & 0xff) || ﻩﻩﻩ *src == '-' || *src == '_' || ﻩﻩﻩ  *src == '、' || *src == '/') { ﻩ*dst++ = *src++; ﻩ ﻩ quoted = TYBS_FALSE; ﻩﻩﻩ} else { ﻩ*dst++ = '\\'; ﻩ ﻩquoted = TYBS_TRUE; ﻩﻩ } ﻩ } } INSIST(sizeof(saved_mand_line) >= sizeof(truncated)); ﻩif (dst == eob) ﻩstrcpy(eob - sizeof(truncated), truncated); ﻩelse ﻩ*dst = '\0'; } static int parse_int(char *arg, const char *desc) { char *endp; ﻩint tmp; long int ltmp; ﻩltmp = strtol(arg, &endp, 10); ﻩtmp = (int) ltmp; ﻩif (*endp != '\0') ﻩns_main_earlyfatal("%s '%s' must be numeric", desc, arg); if (tmp < 0 || tmp != ltmp) ﻩ ns_main_earlyfatal("%s '%s' out of range", desc, arg); ﻩreturn (tmp); } static struct flag_def { const char *name; unsigned int value; } mem_debug_flags[] = { ﻩ{ "trace", TYBS_MEM_DEBUGTRACE }, ﻩ{ "record", TYBS_MEM_DEBUGRECORD }, ﻩ{ "usage", TYBS_MEM_DEBUGUSAGE }, { "size", TYBS_MEM_DEBUGSIZE }, { "mctx", TYBS_MEM_DEBUGCTX }, { NULL, 0 } }; static void set_flags(const char *arg, struct flag_def *defs, unsigned int *ret) { ﻩfor (;;) { ﻩﻩconst struct flag_def *def; ﻩ const char *end = strchr(arg, ','); int arglen; ﻩif (end == NULL) ﻩﻩﻩend = arg + strlen(arg); arglen = end - arg; ﻩ for (def = defs; def->name != NULL; def++) { if (arglen == (int)strlen(def->name) && ﻩﻩﻩ memcmp(arg, def->name, arglen) == 0) { ﻩ ﻩﻩ*ret |= def->value; ﻩ ﻩgoto found; ﻩﻩ } ﻩﻩ} ﻩ ns_main_earlyfatal("unrecognized flag '%、*s'", arglen, arg); found: ﻩif (*end == '\0') ﻩﻩﻩbreak; ﻩarg = end + 1; ﻩ} } static void parse_mand_line(int argc, char *argv[]) { int ch; ﻩint port; tybs_boolean_t disable6 = TYBS_FALSE; ﻩtybs_boolean_t disable4 = TYBS_FALSE; save_mand_line(argc, argv); ﻩtybs_mandline_errprint = TYBS_FALSE; while ((ch = tybs_mandline_parse(argc, argv, ﻩ "46c:C:d:fgi:lm:n:N:p:P:" ﻩﻩﻩ   "sS:t:T:u:vVx:")) != -1) { switch (ch) { ﻩcase '4': ﻩﻩﻩif (disable4) ﻩ ns_main_earlyfatal("cannot specify -4 and -6"); ﻩﻩﻩif (tybs_net_probeipv4() != TYBS_R_SUCCESS) ﻩ ﻩns_main_earlyfatal("IPv4 not supported by OS"); ﻩ ﻩtybs_net_disableipv6(); ﻩdisable6 = TYBS_TRUE; ﻩﻩﻩbreak; ﻩﻩcase '6': ﻩﻩ if (disable6) ﻩ ﻩﻩns_main_earlyfatal("cannot specify -4 and -6"); ﻩ if (tybs_net_probeipv6() != TYBS_R_SUCCESS) ﻩﻩﻩns_main_earlyfatal("IPv6 not supported by OS"); ﻩtybs_net_disableipv4(); ﻩ disable4 = TYBS_TRUE; ﻩﻩbreak; ﻩcase 'c': ns_g_conffile = tybs_mandline_argument; lwresd_g_conffile = tybs_mandline_argument; ﻩ ﻩif (lwresd_g_useresolvconf) ﻩﻩ ns_main_earlyfatal("cannot specify -c and -C"); ﻩﻩns_g_conf = TYBS_TRUE; ﻩﻩ break; case 'C': ﻩ ﻩlwresd_g_resolvconffile = tybs_mandline_argument; ﻩif (ns_g_conf) ﻩﻩﻩns_main_earlyfatal("cannot specify -c and -C"); ﻩlwresd_g_useresolvconf = TYBS_TRUE; ﻩﻩ break; ﻩﻩcase 'd': ﻩ ns_g_debuglevel = parse_int(tybs_mandline_argument, ﻩ ﻩﻩ ﻩ "debug level"); ﻩ break; ﻩ case 'f': ﻩﻩ ns_g_foreground = TYBS_TRUE; ﻩﻩﻩbreak; ﻩcase 'g': ﻩﻩ ns_g_foreground = TYBS_TRUE; ﻩﻩns_g_logstderr = TYBS_TRUE; ﻩ break; ﻩ/* XXXBEW -i should be removed */ case 'i': ﻩﻩlwresd_g_defaultpidfile = tybs_mandline_argument; ﻩ ﻩbreak; ﻩﻩcase 'l': ﻩﻩﻩns_g_lwresdonly = TYBS_TRUE; ﻩﻩbreak; ﻩﻩcase 'm': set_flags(tybs_mandline_argument, mem_debug_flags, ﻩﻩ ﻩ &tybs_mem_debugging); ﻩ break; case 'N': /* Deprecated、 */ ﻩcase 'n': ﻩﻩﻩns_g_cpus = parse_int(tybs_mandline_argument, ﻩ   "number of cpus"); ﻩif (ns_g_cpus == 0) ﻩ ﻩns_g_cpus = 1; ﻩ break; case 'p': port = parse_int(tybs_mandline_argument, "port"); ﻩ if (port < 1 || port > 65535) ﻩ ns_main_earlyfatal("port '%s' out of range", ﻩ ﻩﻩ  tybs_mandline_argument); ﻩ ns_g_port = port; ﻩ break; ﻩ/* XXXBEW Should -P be removed? */ ﻩcase 'P': ﻩ port = parse_int(tybs_mandline_argument, "port"); ﻩif (port < 1 || port > 65535) ﻩﻩ ns_main_earlyfatal("port '%s' out of range", ﻩ tybs_mandline_argument); ﻩﻩﻩlwresd_g_listenport = port; ﻩ ﻩbreak; ﻩ case 's': ﻩﻩ want_stats = TYBS_TRUE; ﻩﻩbreak; case 'S': ﻩ maxsocks = parse_int(tybs_mandline_argument, ﻩ ﻩﻩ   "max number of sockets"); ﻩﻩ break; ﻩ case 't': ﻩ ns_g_chrootdir = tybs_mandline_argument; ﻩ ﻩbreak; ﻩ case 'T': ﻩﻩif (strcmp(tybs_mandline_argument, "clienttest") == 0) ﻩﻩ ﻩns_g_clienttest = TYBS_TRUE; ﻩ else ﻩ ﻩ fprintf(stderr, "unknown -T flag '%s\n", ﻩ ﻩﻩtybs_mandline_argument); ﻩbreak; ﻩ case 'u': ﻩﻩns_g_username = tybs_mandline_argument; ﻩﻩ break; ﻩcase 'v': ﻩﻩ printf("BIND %s\n", ns_g_version); ﻩﻩexit(0); ﻩcase 'V': ﻩﻩprintf("BIND %s built with %s\n", ns_g_version, ﻩ ns_g_configargs); ﻩ ﻩexit(0); ﻩﻩcase '?': ﻩ usage(); ﻩﻩif (tybs_mandline_option == '?') ﻩ ﻩﻩexit(0); ﻩ ns_main_earlyfatal("unknown option '-%c'", ﻩ   tybs_mandline_option); ﻩdefault: ns_main_earlyfatal("parsing options returned %d", ch); } } argc -= tybs_mandline_index; ﻩargv += tybs_mandline_index; if (argc > 0) { ﻩﻩusage(); ﻩns_main_earlyfatal("extra mand line arguments"); } } static tybs_result_t create_managers(void) { ﻩtybs_result_t result; unsigned int socks; #ifdef TYBS_PLATFORM_USETHREADS unsigned int cpus_detected; #endif #ifdef TYBS_PLATFORM_USETHREADS ﻩcpus_detected = tybs_os_ncpus(); ﻩif (ns_g_cpus == 0) ns_g_cpus = cpus_detected; tybs_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER, ﻩ   TYBS_LOG_INFO, "found %u CPU%s, using %u worker thread%s", ﻩﻩ cpus_detected, cpus_detected == 1 ? "" : "s", ﻩ    ns_g_cpus, ns_g_cpus == 1 ? "" : "s"); #else ﻩns_g_cpus = 1; #endif result = tybs_taskmgr_create(ns_g_mctx, ns_g_cpus, 0, &ns_g_taskmgr); if (result != TYBS_R_SUCCESS) { ﻩUNEXPECTED_ERROR(__FILE__, __LINE__, ﻩﻩ ﻩ "tybs_taskmgr_create() failed: %s", tybs_result_totext(result)); ﻩreturn (TYBS_R_UNEXPECTED); } ﻩresult = tybs_timermgr_create(ns_g_mctx, &ns_g_timermgr); if (result != TYBS_R_SUCCESS) { ﻩﻩUNEXPECTED_ERROR(__FILE__, __LINE__, ﻩﻩ "tybs_timermgr_create() failed: %s", ﻩ ﻩ tybs_result_totext(result)); ﻩreturn (TYBS_R_UNEXPECTED); } ﻩresult = tybs_socketmgr_create2(ns_g_mctx, &ns_g_socketmgr, maxsocks); ﻩif (result != TYBS_R_SUCCESS) { ﻩUNEXPECTED_ERROR(__FILE__, __LINE__, ﻩ ﻩﻩ "tybs_socketmgr_create() failed: %s", ﻩ tybs_result_totext(result)); ﻩ return (TYBS_R_UNEXPECTED); ﻩ} result = tybs_socketmgr_getmaxsockets(ns_g_socketmgr, &socks); if (result == TYBS_R_SUCCESS) { ﻩtybs_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, ﻩ  NS_LOGMODULE_SERVER, ﻩﻩ     TYBS_LOG_INFO, "using up to %u sockets", socks); ﻩ} ﻩresult = tybs_entropy_create(ns_g_mctx, &ns_g_entropy); if (result != TYBS_R_SUCCESS) { ﻩﻩUNEXPECTED_ERROR(__FILE__, __LINE__, ﻩ "tybs_entropy_create() failed: %s", ﻩﻩ tybs_result_totext(result)); ﻩ return (TYBS_R_UNEXPECTED); ﻩ} ﻩresult = tybs_hash_create(ns_g_mctx, ns_g_entropy, DNS_NAME_MAXWIRE); if (result != TYBS_R_SUCCESS) { ﻩﻩUNEXPECTED_ERROR(__FILE__, __LINE__, ﻩﻩﻩ "tybs_hash_create() failed: %s", ﻩﻩﻩ tybs_result_totext(result)); ﻩ return (TYBS_R_UNEXPECTED); } return (TYBS_R_SUCCESS); } static void destroy_managers(void) { ﻩns_lwresd_shutdown(); tybs_entropy_detach(&ns_g_entropy); if (ns_g_fallbackentropy != NULL) ﻩ tybs_entropy_detach(&ns_g_fallbackentropy); ﻩtybs_taskmgr_destroy(&ns_g_taskmgr); ﻩtybs_timermgr_destroy(&ns_g_timermgr); tybs_socketmgr_destroy(&ns_g_socketmgr); tybs_hash_destroy(); } static void setup(void) { tybs_result_t result; #ifdef HAVE_LIBSCF char *instance = NULL; #endif ns_os_inituserinfo(ns_g_username); ns_os_tzset(); ﻩns_os_opendevnull(); #ifdef HAVE_LIBSCF result = ns_smf_get_instance(&instance, 0, ns_g_mctx); if (result == TYBS_R_SUCCESS) ﻩ ns_smf_got_instance = 1; ﻩelse ﻩns_smf_got_instance = 0; ﻩif (instance != NULL) tybs_mem_free(ns_g_mctx, instance); #endif /* HAVE_LIBSCF */ #ifdef PATH_RANDOMDEV if (ns_g_chrootdir != NULL) { result = tybs_entropy_create(ns_g_mctx, &ns_g_fallbackentropy); ﻩif (result != TYBS_R_SUCCESS) ﻩﻩ ns_main_earlyfatal("tybs_entropy_create() failed: %s", ﻩﻩﻩ ﻩ   tybs_result_totext(result)); ﻩﻩresult = tybs_entropy_create(ns_g_fallbackentropy, ﻩ ﻩﻩ   PATH_RANDOMDEV); if (result != TYBS_R_SUCCESS) { ﻩﻩns_main_earlywarning("could not open pre-chroot " ﻩﻩﻩ ﻩ "entropy source %s: %s", ﻩ   PATH_RANDOMDEV, ﻩ    tybs_result_totext(result)); ﻩ tybs_entropy_detach(&ns_g_fallbackentropy); ﻩ } } #endif ﻩns_os_chroot(ns_g_chrootdir); ns_os_minprivs(); result = ns_log_init(TYBS_TF(ns_g_username != NULL)); ﻩif (result != TYBS_R_SUCCESS) ﻩﻩns_main_earlyfatal("ns_log_init() failed: %s", ﻩﻩﻩ   tybs_result_totext(result)); if (!ns_g_foreground) ns_os_daemonize(); result = tybs_app_start(); ﻩif (result != TYBS_R_SUCCESS) ns_main_earlyfatal("tybs_app_start() failed: %s", ﻩﻩ ﻩ tybs_result_totext(result)); ﻩtybs_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, ﻩ    TYBS_LOG_NOTICE, "starting BIND %s%s", ns_g_version, ﻩﻩ   saved_mand_line); tybs_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,  TYBS_LOG_NOTICE, "built with %s", ns_g_configargs); (void)tybs_resource_getlimit(tybs_resource_stacksize, ﻩ   &ns_g_initstacksize); (void)tybs_resource_getlimit(tybs_resource_datasize, ﻩﻩ &ns_g_initdatasize); (void)tybs_resource_getlimit(tybs_resource_coresize, ﻩﻩ   &ns_g_initcoresize); (void)tybs_resource_getlimit(tybs_resource_openfiles,  &ns_g_initopenfiles); ﻩif (! tybs_(ns_g_conffile)) { ﻩﻩresult = tybs_(ns_g_conffile, ﻩ ﻩﻩ    absolute_conffile, ﻩ ﻩ   sizeof(absolute_conffile)); ﻩﻩif (result != TYBS_R_SUCCESS) ﻩ ns_main_ear
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