asterisk.c

				}
				t++;
			} else {
				*p = *t;
				p++;
				t++;
			}
		}
		if (color_used) {
			/* Force colors back to normal at end */
			term_color_code(term_code, COLOR_WHITE, COLOR_BLACK, sizeof(term_code));
			if (strlen(term_code) > sizeof(prompt) - strlen(prompt)) {
				strncat(prompt + sizeof(prompt) - strlen(term_code) - 1, term_code, strlen(term_code));
			} else {
				strncat(p, term_code, sizeof(term_code));
			}
		}
	} else if (remotehostname)
		snprintf(prompt, sizeof(prompt), ASTERISK_PROMPT2, remotehostname);
	else
		snprintf(prompt, sizeof(prompt), ASTERISK_PROMPT);

	return(prompt);	
}

static char **ast_el_strtoarr(char *buf)
{
	char **match_list = NULL, *retstr;
        size_t match_list_len;
	int matches = 0;

        match_list_len = 1;
	while ( (retstr = strsep(&buf, " ")) != NULL) {

		if (!strcmp(retstr, AST_CLI_COMPLETE_EOF))
			break;
                if (matches + 1 >= match_list_len) {
                        match_list_len <<= 1;
                        match_list = realloc(match_list, match_list_len * sizeof(char *));
		}

		match_list[matches++] = strdup(retstr);
	}

        if (!match_list)
                return (char **) NULL;

	if (matches>= match_list_len)
		match_list = realloc(match_list, (match_list_len + 1) * sizeof(char *));

	match_list[matches] = (char *) NULL;

	return match_list;
}

static int ast_el_sort_compare(const void *i1, const void *i2)
{
	char *s1, *s2;

	s1 = ((char **)i1)[0];
	s2 = ((char **)i2)[0];

	return strcasecmp(s1, s2);
}

static int ast_cli_display_match_list(char **matches, int len, int max)
{
	int i, idx, limit, count;
	int screenwidth = 0;
	int numoutput = 0, numoutputline = 0;

	screenwidth = ast_get_termcols(STDOUT_FILENO);

	/* find out how many entries can be put on one line, with two spaces between strings */
	limit = screenwidth / (max + 2);
	if (limit == 0)
		limit = 1;

	/* how many lines of output */
	count = len / limit;
	if (count * limit < len)
		count++;

	idx = 1;

	qsort(&matches[0], (size_t)(len + 1), sizeof(char *), ast_el_sort_compare);

	for (; count > 0; count--) {
		numoutputline = 0;
		for (i=0; i < limit && matches[idx]; i++, idx++) {

			/* Don't print dupes */
			if ( (matches[idx+1] != NULL && strcmp(matches[idx], matches[idx+1]) == 0 ) ) {
				i--;
				continue;
			}

			numoutput++;  numoutputline++;
			fprintf(stdout, "%-*s  ", max, matches[idx]);
		}
		if (numoutputline > 0)
			fprintf(stdout, "\n");
	}

	return numoutput;
}


static char *cli_complete(EditLine *el, int ch)
{
	int len=0;
	char *ptr;
	int nummatches = 0;
	char **matches;
	int retval = CC_ERROR;
	char buf[2048];
	int res;

	LineInfo *lf = (LineInfo *)el_line(el);

	*(char *)lf->cursor = '\0';
	ptr = (char *)lf->cursor;
	if (ptr) {
		while (ptr > lf->buffer) {
			if (isspace(*ptr)) {
				ptr++;
				break;
			}
			ptr--;
		}
	}

	len = lf->cursor - ptr;

	if (option_remote) {
		snprintf(buf, sizeof(buf),"_COMMAND NUMMATCHES \"%s\" \"%s\"", lf->buffer, ptr); 
		fdprint(ast_consock, buf);
		res = read(ast_consock, buf, sizeof(buf));
		buf[res] = '\0';
		nummatches = atoi(buf);

		if (nummatches > 0) {
			char *mbuf;
			int mlen = 0, maxmbuf = 2048;
			/* Start with a 2048 byte buffer */
			mbuf = malloc(maxmbuf);
			if (!mbuf)
				return (char *)(CC_ERROR);
			snprintf(buf, sizeof(buf),"_COMMAND MATCHESARRAY \"%s\" \"%s\"", lf->buffer, ptr); 
			fdprint(ast_consock, buf);
			res = 0;
			mbuf[0] = '\0';
			while (!strstr(mbuf, AST_CLI_COMPLETE_EOF) && res != -1) {
				if (mlen + 1024 > maxmbuf) {
					/* Every step increment buffer 1024 bytes */
					maxmbuf += 1024;
					mbuf = realloc(mbuf, maxmbuf);
					if (!mbuf)
						return (char *)(CC_ERROR);
				}
				/* Only read 1024 bytes at a time */
				res = read(ast_consock, mbuf + mlen, 1024);
				if (res > 0)
					mlen += res;
			}
			mbuf[mlen] = '\0';

			matches = ast_el_strtoarr(mbuf);
			free(mbuf);
		} else
			matches = (char **) NULL;


	}  else {

		nummatches = ast_cli_generatornummatches((char *)lf->buffer,ptr);
		matches = ast_cli_completion_matches((char *)lf->buffer,ptr);
	}

	if (matches) {
		int i;
		int matches_num, maxlen, match_len;

		if (matches[0][0] != '\0') {
			el_deletestr(el, (int) len);
			el_insertstr(el, matches[0]);
			retval = CC_REFRESH;
		}

		if (nummatches == 1) {
			/* Found an exact match */
			el_insertstr(el, " ");
			retval = CC_REFRESH;
		} else {
			/* Must be more than one match */
			for (i=1, maxlen=0; matches[i]; i++) {
				match_len = strlen(matches[i]);
				if (match_len > maxlen)
					maxlen = match_len;
			}
			matches_num = i - 1;
			if (matches_num >1) {
				fprintf(stdout, "\n");
				ast_cli_display_match_list(matches, nummatches, maxlen);
				retval = CC_REDISPLAY;
			} else { 
				el_insertstr(el," ");
				retval = CC_REFRESH;
			}
		}
	free(matches);
	}

	return (char *)retval;
}

static int ast_el_initialize(void)
{
	HistEvent ev;

	if (el != NULL)
		el_end(el);
	if (el_hist != NULL)
		history_end(el_hist);

	el = el_init("asterisk", stdin, stdout, stderr);
	el_set(el, EL_PROMPT, cli_prompt);

	el_set(el, EL_EDITMODE, 1);		
	el_set(el, EL_EDITOR, "emacs");		
	el_hist = history_init();
	if (!el || !el_hist)
		return -1;

	/* setup history with 100 entries */
	history(el_hist, &ev, H_SETSIZE, 100);

	el_set(el, EL_HIST, history, el_hist);

	el_set(el, EL_ADDFN, "ed-complete", "Complete argument", cli_complete);
	/* Bind <tab> to command completion */
	el_set(el, EL_BIND, "^I", "ed-complete", NULL);
	/* Bind ? to command completion */
	el_set(el, EL_BIND, "?", "ed-complete", NULL);
	/* Bind ^D to redisplay */
	el_set(el, EL_BIND, "^D", "ed-redisplay", NULL);

	return 0;
}

static int ast_el_add_history(char *buf)
{
	HistEvent ev;

	if (el_hist == NULL || el == NULL)
		ast_el_initialize();
	if (strlen(buf) > 256)
		return 0;
	return (history(el_hist, &ev, H_ENTER, buf));
}

static int ast_el_write_history(char *filename)
{
	HistEvent ev;

	if (el_hist == NULL || el == NULL)
		ast_el_initialize();

	return (history(el_hist, &ev, H_SAVE, filename));
}

static int ast_el_read_history(char *filename)
{
	char buf[256];
	FILE *f;
	int ret = -1;

	if (el_hist == NULL || el == NULL)
		ast_el_initialize();

	if ((f = fopen(filename, "r")) == NULL)
		return ret;

	while (!feof(f)) {
		fgets(buf, sizeof(buf), f);
		if (!strcmp(buf, "_HiStOrY_V2_\n"))
			continue;
		if ((ret = ast_el_add_history(buf)) == -1)
			break;
	}
	fclose(f);

	return ret;
}

static void ast_remotecontrol(char * data)
{
	char buf[80];
	int res;
	char filename[80] = "";
	char *hostname;
	char *cpid;
	char *version;
	int pid;
	char tmp[80];
	char *stringp=NULL;

	char *ebuf;
	int num = 0;

	read(ast_consock, buf, sizeof(buf));
	if (data)
		write(ast_consock, data, strlen(data) + 1);
	stringp=buf;
	hostname = strsep(&stringp, "/");
	cpid = strsep(&stringp, "/");
	version = strsep(&stringp, "\n");
	if (!version)
		version = "<Version Unknown>";
	stringp=hostname;
	strsep(&stringp, ".");
	if (cpid)
		pid = atoi(cpid);
	else
		pid = -1;
	snprintf(tmp, sizeof(tmp), "set verbose atleast %d", option_verbose);
	fdprint(ast_consock, tmp);
	ast_verbose("Connected to Asterisk %s currently running on %s (pid = %d)\n", version, hostname, pid);
	remotehostname = hostname;
	if (getenv("HOME")) 
		snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
	if (el_hist == NULL || el == NULL)
		ast_el_initialize();

	el_set(el, EL_GETCFN, ast_el_read_char);

	if (strlen(filename))
		ast_el_read_history(filename);

	ast_cli_register(&quit);
	ast_cli_register(&astexit);
#if 0
	ast_cli_register(&astshutdown);
#endif	
	if (option_exec && data) {  /* hack to print output then exit if asterisk -rx is used */
		char tempchar;
		ast_el_read_char(el, &tempchar);
		return;
	}
	for(;;) {
		ebuf = (char *)el_gets(el, &num);

		if (ebuf && strlen(ebuf)) {
			if (ebuf[strlen(ebuf)-1] == '\n')
				ebuf[strlen(ebuf)-1] = '\0';
			if (!remoteconsolehandler(ebuf)) {
				res = write(ast_consock, ebuf, strlen(ebuf) + 1);
				if (res < 1) {
					ast_log(LOG_WARNING, "Unable to write: %s\n", strerror(errno));
					break;
				}
			}
		}
	}
	printf("\nDisconnected from Asterisk server\n");
}

static int show_cli_help(void) {
	printf("Asterisk " ASTERISK_VERSION ", Copyright (C) 2000-2002, Digium.\n");
	printf("Usage: asterisk [OPTIONS]\n");
	printf("Valid Options:\n");
	printf("   -h           This help screen\n");
	printf("   -r           Connect to Asterisk on this machine\n");
	printf("   -f           Do not fork\n");
	printf("   -n           Disable console colorization\n");
	printf("   -p           Run as pseudo-realtime thread\n");
	printf("   -v           Increase verbosity (multiple v's = more verbose)\n");
	printf("   -q           Quiet mode (supress output)\n");
	printf("   -g           Dump core in case of a crash\n");
	printf("   -x <cmd>     Execute command <cmd> (only valid with -r)\n");
	printf("   -i           Initializie crypto keys at startup\n");
	printf("   -c           Provide console CLI\n");
	printf("   -d           Enable extra debugging\n");
	printf("\n");
	return 0;
}

static void ast_readconfig(void) {
	struct ast_config *cfg;
	struct ast_variable *v;
	char *config = ASTCONFPATH;

	if (option_overrideconfig == 1) {
	    cfg = ast_load((char *)ast_config_AST_CONFIG_FILE);
	} else {
	    cfg = ast_load(config);
	}

	/* init with buildtime config */
	strncpy((char *)ast_config_AST_CONFIG_DIR,AST_CONFIG_DIR,sizeof(ast_config_AST_CONFIG_DIR)-1);
	strncpy((char *)ast_config_AST_SPOOL_DIR,AST_SPOOL_DIR,sizeof(ast_config_AST_SPOOL_DIR)-1);
	strncpy((char *)ast_config_AST_MODULE_DIR,AST_MODULE_DIR,sizeof(ast_config_AST_VAR_DIR)-1);
	strncpy((char *)ast_config_AST_VAR_DIR,AST_VAR_DIR,sizeof(ast_config_AST_VAR_DIR)-1);
	strncpy((char *)ast_config_AST_LOG_DIR,AST_LOG_DIR,sizeof(ast_config_AST_LOG_DIR)-1);
	strncpy((char *)ast_config_AST_AGI_DIR,AST_AGI_DIR,sizeof(ast_config_AST_AGI_DIR)-1);
	strncpy((char *)ast_config_AST_DB,AST_DB,sizeof(ast_config_AST_DB)-1);
	strncpy((char *)ast_config_AST_KEY_DIR,AST_KEY_DIR,sizeof(ast_config_AST_KEY_DIR)-1);
	strncpy((char *)ast_config_AST_PID,AST_PID,sizeof(ast_config_AST_PID)-1);
	strncpy((char *)ast_config_AST_SOCKET,AST_SOCKET,sizeof(ast_config_AST_SOCKET)-1);
	strncpy((char *)ast_config_AST_RUN_DIR,AST_RUN_DIR,sizeof(ast_config_AST_RUN_DIR)-1);
	
	/* no asterisk.conf? no problem, use buildtime config! */
	if (!cfg) {
	    return;
	}
	v = ast_variable_browse(cfg, "directories");
	while(v) {
		if (!strcasecmp(v->name, "astetcdir")) {
		    strncpy((char *)ast_config_AST_CONFIG_DIR,v->value,sizeof(ast_config_AST_CONFIG_DIR)-1);
		} else if (!strcasecmp(v->name, "astspooldir")) {
		    strncpy((char *)ast_config_AST_SPOOL_DIR,v->value,sizeof(ast_config_AST_SPOOL_DIR)-1);
		} else if (!strcasecmp(v->name, "astvarlibdir")) {
		    strncpy((char *)ast_config_AST_VAR_DIR,v->value,sizeof(ast_config_AST_VAR_DIR)-1);
		    snprintf((char *)ast_config_AST_DB,sizeof(ast_config_AST_DB)-1,"%s/%s",v->value,"astdb");    
		} else if (!strcasecmp(v->name, "astlogdir")) {
		    strncpy((char *)ast_config_AST_LOG_DIR,v->value,sizeof(ast_config_AST_LOG_DIR)-1);
		} else if (!strcasecmp(v->name, "astagidir")) {
		    strncpy((char *)ast_config_AST_AGI_DIR,v->value,sizeof(ast_config_AST_AGI_DIR)-1);
		} else if (!strcasecmp(v->name, "astrundir")) {
		    snprintf((char *)ast_config_AST_PID,sizeof(ast_config_AST_PID)-1,"%s/%s",v->value,"asterisk.pid");    
		    snprintf((char *)ast_config_AST_SOCKET,sizeof(ast_config_AST_SOCKET)-1,"%s/%s",v->value,"asterisk.ctl");    
		    strncpy((char *)ast_config_AST_RUN_DIR,v->value,sizeof(ast_config_AST_RUN_DIR)-1);
		} else if (!strcasecmp(v->name, "astmoddir")) {
		    strncpy((char *)ast_config_AST_MODULE_DIR,v->value,sizeof(ast_config_AST_MODULE_DIR)-1);
		}
		v = v->next;
	}
	ast_destroy(cfg);
}

int main(int argc, char *argv[])
{
	int c;
	char filename[80] = "";
	char hostname[256];
	char tmp[80];
	char * xarg = NULL;
	int x;
	FILE *f;
	sigset_t sigs;
	int num;
	char *buf;

	/* Remember original args for restart */
	if (argc > sizeof(_argv) / sizeof(_argv[0]) - 1) {
		fprintf(stderr, "Truncating argument size to %d\n", sizeof(_argv) / sizeof(_argv[0]) - 1);
		argc = sizeof(_argv) / sizeof(_argv[0]) - 1;
	}
	for (x=0;x<argc;x++)
		_argv[x] = argv[x];
	_argv[x] = NULL;

	/* if the progname is rasterisk consider it a remote console */
	if ( argv[0] && (strstr(argv[0], "rasterisk")) != NULL)  {
		option_remote++;
		option_nofork++;
	}
	if (gethostname(hostname, sizeof(hostname)))
		strncpy(hostname, "<Unknown>", sizeof(hostname)-1);
	ast_mainpid = getpid();
	ast_ulaw_init();
	ast_alaw_init();
	callerid_init();
	tdd_init();
	if (getenv("HOME")) 
		snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
	/* Check if we're root */
	/*
	if (geteuid()) {
		ast_log(LOG_ERROR, "Must be run as root\n");
		exit(1);
	}
	*/
	/* Check for options */
	while((c=getopt(argc, argv, "hfdvqprgcinx:C:")) != -1) {
		switch(c) {
		case 'd':
			option_debug++;
			option_nofork++;
			break;
		case 'c':
			option_console++;
			option_nofork++;
			break;
		case 'f':
			option_nofork++;
			break;
		case 'n':
			option_nocolor++;
			break;
		case 'r':
			option_remote++;
			option_nofork++;
			break;
		case 'p':
			option_highpriority++;
			break;
		case 'v':
			option_verbose++;
			option_nofork++;
			break;
		case 'q':
			option_quiet++;
			break;
		case 'x':
			option_exec++;
			xarg = optarg;
			break;
		case 'C':
			strncpy((char *)ast_config_AST_CONFIG_FILE,optarg,sizeof(ast_config_AST_CONFIG_FILE));
			option_overrideconfig++;
			break;
		case 'i':
			option_initcrypto++;
			break;
		case'g':
			option_dumpcore++;
			break;
		case 'h':
			show_cli_help();
			exit(0);
		case '?':
			exit(1);
		}
	}

	if (option_dumpcore) {
		struct rlimit l;
		memset(&l, 0, sizeof(l));
		l.rlim_cur = RLIM_INFINITY;
		l.rlim_max = RLIM_INFINITY;
		if (setrlimit(RLIMIT_CORE, &l)) {
			ast_log(LOG_WARNING, "Unable to disable core size resource limit: %s\n", strerror(errno));
		}
	}

	term_init();
	printf(term_end());
	fflush(stdout);
	if (option_console && !option_verbose) 
		ast_verbose("[ Reading Master Configuration ]");
	ast_readconfig();

	if (option_console) {
                if (el_hist == NULL || el == NULL)
                        ast_el_initialize();

                if (strlen(filename))
                        ast_el_read_history(filename);
	}

	if (ast_tryconnect()) {
		/* One is already running */
		if (option_remote) {
			if (option_exec) {
				ast_remotecontrol(xarg);
				quit_handler(0, 0, 0, 0);
				exit(0);
			}
			printf(term_quit());
			ast_register_verbose(console_verboser);
			ast_verbose( "Asterisk " ASTERISK_VERSION ", Copyright (C) 1999-2004 Digium.\n");
			ast_verbose( "Written by Mark Spencer <markster@digium.com>\n");
			ast_verbose( "=========================================================================\n");
			ast_remotecontrol(NULL);
			quit_handler(0, 0, 0, 0);
			exit(0);
		} else {
			ast_log(LOG_ERROR, "Asterisk already running on %s.  Use 'asterisk -r' to connect.\n", (char *)ast_config_AST_SOCKET);
			printf(term_quit());
			exit(1);
		}
	} else if (option_remote || option_exec) {
		ast_log(LOG_ERROR, "Unable to connect to remote asterisk\n");
		printf(term_quit());
		exit(1);
	}
	/* Blindly write pid file since we couldn't connect */
	unlink((char *)ast_config_AST_PID);
	f = fopen((char *)ast_config_AST_PID, "w");
	if (f) {
		fprintf(f, "%d\n", getpid());
		fclose(f);
	} else
		ast_log(LOG_WARNING, "Unable to open pid file '%s': %s\n", (char *)ast_config_AST_PID, strerror(errno));

	if (!option_verbose && !option_debug && !option_nofork && !option_console) {
		daemon(0,0);
		/* Blindly re-write pid file since we are forking */
		unlink((char *)ast_config_AST_PID);
		f = fopen((char *)ast_config_AST_PID, "w");
		if (f) {
			fprintf(f, "%d\n", getpid());
			fclose(f);
		} else
			ast_log(LOG_WARNING, "Unable to open pid file '%s': %s\n", (char *)ast_config_AST_PID, strerror(errno));
	}

	ast_makesocket();
	sigemptyset(&sigs);
	sigaddset(&sigs, SIGHUP);
	sigaddset(&sigs, SIGTERM);
	sigaddset(&sigs, SIGINT);
	sigaddset(&sigs, SIGPIPE);
	sigaddset(&sigs, SIGWINCH);
	pthread_sigmask(SIG_BLOCK, &sigs, NULL);
	if (option_console || option_verbose || option_remote)
		ast_register_verbose(console_verboser);
	/* Print a welcome message if desired */
	if (option_verbose || option_console) {
		ast_verbose( "Asterisk " ASTERISK_VERSION ", Copyright (C) 1999-2001 Linux Support Services, Inc.\n");
		ast_verbose( "Written by Mark Spencer <markster@linux-support.net>\n");
		ast_verbose( "=========================================================================\n");
	}
	if (option_console && !option_verbose) 
		ast_verbose("[ Booting...");

	signal(SIGURG, urg_handler);
	signal(SIGINT, __quit_handler);
	signal(SIGTERM, __quit_handler);
	signal(SIGHUP, hup_handler);
	signal(SIGCHLD, child_handler);
	signal(SIGPIPE, SIG_IGN);

	if (set_priority(option_highpriority)) {
		printf(term_quit());
		exit(1);
	}
	if (init_logger()) {
		printf(term_quit());
		exit(1);
	}
	if (init_manager()) {
		printf(term_quit());
		exit(1);
	}
	ast_rtp_init();
	if (ast_image_init()) {
		printf(term_quit());
		exit(1);
	}
	if (load_pbx()) {
		printf(term_quit());
		exit(1);
	}
	if (load_modules()) {
		printf(term_quit());
		exit(1);
	}
	if (init_framer()) {
		printf(term_quit());
		exit(1);
	}
	if (astdb_init()) {
		printf(term_quit());
		exit(1);
	}
	if (ast_enum_init()) {
		printf(term_quit());
		exit(1);
	}
	/* We might have the option of showing a console, but for now just
	   do nothing... */
	if (option_console && !option_verbose)
		ast_verbose(" ]\n");
	if (option_verbose || option_console)
		ast_verbose(term_color(tmp, "Asterisk Ready.\n", COLOR_BRWHITE, COLOR_BLACK, sizeof(tmp)));
	if (option_nofork)
		consolethread = pthread_self();
	fully_booted = 1;
	pthread_sigmask(SIG_UNBLOCK, &sigs, NULL);
#ifdef __AST_DEBUG_MALLOC
	__ast_mm_init();
#endif	
	time(&ast_startuptime);
	ast_cli_register(&astshutdownnow);
	ast_cli_register(&astshutdowngracefully);
	ast_cli_register(&astrestartnow);
	ast_cli_register(&astrestartgracefully);
	ast_cli_register(&astrestartwhenconvenient);
	ast_cli_register(&astshutdownwhenconvenient);
	ast_cli_register(&aborthalt);
	ast_cli_register(&astbang);
	if (option_console) {
		/* Console stuff now... */
		/* Register our quit function */
		char title[256];
		set_icon("Asterisk");
		snprintf(title, sizeof(title), "Asterisk Console on '%s' (pid %d)", hostname, ast_mainpid);
		set_title(title);
	    ast_cli_register(&quit);
	    ast_cli_register(&astexit);

		for (;;) {
			buf = (char *)el_gets(el, &num);
			if (buf) {
				if (buf[strlen(buf)-1] == '\n')
					buf[strlen(buf)-1] = '\0';

				consolehandler((char *)buf);
			} else {
				if (option_remote)
 					ast_cli(STDOUT_FILENO, "\nUse EXIT or QUIT to exit the asterisk console\n");
			}
		}

	} else {
 		/* Do nothing */
		for(;;) 
			poll(NULL,0, -1);
	}
	return 0;
}


#if  defined(__FreeBSD__)

/* duh? ERANGE value copied from web... */
#define ERANGE 34
#undef gethostbyname

int gethostbyname_r (const char *name,
		     struct hostent *ret,
		     char *buf,
		     size_t buflen,
		     struct hostent **result,
		     int *h_errnop);

int gethostbyname_r (const char *name,
		     struct hostent *ret,
		     char *buf,
		     size_t buflen,
		     struct hostent **result,
		     int *h_errnop) {

  int hsave;
  struct hostent *ph;
  static ast_mutex_t __mutex = AST_MUTEX_INITIALIZER;
  ast_mutex_lock(&__mutex); /* begin critical area */
  hsave = h_errno;

  ph = gethostbyname(name);
  *h_errnop = h_errno; /* copy h_errno to *h_herrnop */
  if (ph == NULL) {
    *result = NULL;
  } else {
    char **p, **q;
    char *pbuf;
    int nbytes=0;
    int naddr=0, naliases=0;
    /* determine if we have enough space in buf */

    /* count how many addresses */
    for (p = ph->h_addr_list; *p != 0; p++) {
      nbytes += ph->h_length; /* addresses */
      nbytes += sizeof(*p); /* pointers */
      naddr++;
    }
    nbytes += sizeof(*p); /* one more for the terminating NULL */

    /* count how many aliases, and total length of strings */

    for (p = ph->h_aliases; *p != 0; p++) {
      nbytes += (strlen(*p)+1); /* aliases */
      nbytes += sizeof(*p);  /* pointers */
      naliases++;
    }
    nbytes += sizeof(*p); /* one more for the terminating NULL */

    /* here nbytes is the number of bytes required in buffer */
    /* as a terminator must be there, the minimum value is ph->h_length */
    if(nbytes > buflen) {
      *result = NULL;
      pthread_mutex_unlock(&__mutex); /* end critical area */
      return ERANGE; /* not enough space in buf!! */
    }

    /* There is enough space. Now we need to do a deep copy! */
    /* Allocation in buffer:
       from [0] to [(naddr-1) * sizeof(*p)]:
       pointers to addresses
       at [naddr * sizeof(*p)]:
       NULL
       from [(naddr+1) * sizeof(*p)] to [(naddr+naliases) * sizeof(*p)] :
       pointers to aliases
       at [(naddr+naliases+1) * sizeof(*p)]:
       NULL
       then naddr addresses (fixed length), and naliases aliases (asciiz).
    */

    *ret = *ph;   /* copy whole structure (not its address!) */

    /* copy addresses */
    q = (char **)buf; /* pointer to pointers area (type: char **) */
    ret->h_addr_list = q; /* update pointer to address list */
    pbuf = buf + ((naddr+naliases+2)*sizeof(*p)); /* skip that area */
    for (p = ph->h_addr_list; *p != 0; p++) {
      memcpy(pbuf, *p, ph->h_length); /* copy address bytes */
      *q++ = pbuf; /* the pointer is the one inside buf... */
      pbuf += ph->h_length; /* advance pbuf */
    }
    *q++ = NULL; /* address list terminator */

    /* copy aliases */

    ret->h_aliases = q; /* update pointer to aliases list */
    for (p = ph->h_aliases; *p != 0; p++) {
      strcpy(pbuf, *p); /* copy alias strings */
      *q++ = pbuf; /* the pointer is the one inside buf... */
      pbuf += strlen(*p); /* advance pbuf */
      *pbuf++ = 0; /* string terminator */
    }
    *q++ = NULL; /* terminator */

    strcpy(pbuf, ph->h_name); /* copy alias strings */
    ret->h_name = pbuf;
    pbuf += strlen(ph->h_name); /* advance pbuf */
    *pbuf++ = 0; /* string terminator */

    *result = ret;  /* and let *result point to structure */

  }
  h_errno = hsave;  /* restore h_errno */

  ast_mutex_unlock(&__mutex); /* end critical area */

  return (*result != NULL);

}


#endif

struct hostent *ast_gethostbyname(const char *host, struct ast_hostent *hp)
{
	int res;
	int herrno;
	struct hostent *result = NULL;

	res = gethostbyname_r(host, &hp->hp, hp->buf, sizeof(hp->buf), &result, &herrno);

	if (res)
		return NULL;
	return &hp->hp;
}