deleted file mode 100644

@@ -1,950 +0,0 @@

-/*

- * $Id$

- *

- *

- * Copyright (C) 2001-2003 FhG Fokus

- *

- * This file is part of ser, a free SIP server.

- *

- * ser is free software; you can redistribute it and/or modify

- * it under the terms of the GNU General Public License as published by

- * the Free Software Foundation; either version 2 of the License, or

- * (at your option) any later version

- *

- * For a license to use the ser software under conditions

- * other than those described here, or to purchase support for this

- * software, please contact iptel.org by e-mail at the following addresses:

- *    info@iptel.org

- *

- * ser is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

- * GNU General Public License for more details.

- *

- * You should have received a copy of the GNU General Public License 

- * along with this program; if not, write to the Free Software 

- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

- *

- * Fifo server is a very powerful tool used to access easily

- * ser's internals via textual interface, similarly to

- * how internals of many operating systems are accessible

- * via the proc file system. This might be used for

- * making ser do things for you (such as initiating new

- * transaction from webpages) or inspect server's health.

- * 

- * FIFO server allows new functionality to be registered

- * with it -- thats what register_fifo_cmd is good for.

- * Remember, the initialization must take place before

- * forking; best in init_module functions. When a function

- * is registered, it can be always evoked by sending its

- * name prefixed by colon to the FIFO.

- *

- * There are few commands already implemented in core.

- * These are 'uptime' for looking at how long the server

- * is alive and 'print' for debugging purposes.

- *

- * Every command sent to FIFO must be sent atomically to

- * avoid intermixing with other commands and MUST be

- * terminated by empty line so that the server is to able

- * to find its end if it does not understand the command.

- *

- * File test/transaction.fifo illustrates example of use

- * of t_uac command (part of TM module).

- *

- * History:

- * --------

- *  2003-03-29  destroy pkg mem introduced (jiri)

- *  2003-03-19  replaced all mallocs/frees w/ pkg_malloc/pkg_free (andrei)

- *  2003-01-29  new built-in fifo commands: arg and pwd (jiri)

- *  2003-10-07  fifo security fixes: permissions, always delete old fifo,

- *               reply fifo checks -- added fifo_check (andrei)

- *  2003-10-13  added fifo_dir for reply fifos (andrei)

- *  2003-10-30  DB interface exported via FIFO (bogdan)

- *  2004-03-09  open_fifo_server split into init_ and start_ (andrei)

- *  2004-04-29  added chown(sock_user, sock_group)  (andrei)

- *  2004-06-06  updated to the new DB interface  & init_db_fifo (andrei)

- *  2004-09-19  fifo is deleted on exit (destroy_fifo)  (andrei)

- *  2005-03-02  meminfo fifo cmd added (andrei)

- */

-

-

-#include <limits.h>

-#include <stdlib.h>

-#include <sys/types.h>

-#include <unistd.h>

-#include <stdio.h>

-#include <errno.h>

-#include <sys/stat.h>

-#include <fcntl.h>

-#include <signal.h>

-#include <string.h>

-#include <time.h>

-#include <stdarg.h>

-#ifdef USE_TCP

-#include <sys/socket.h>

-#endif

-

-#include "dprint.h"

-#include "ut.h"

-#include "error.h"

-#include "config.h"

-#include "globals.h"

-#include "fifo_server.h"

-#include "mem/mem.h"

-#include "mem/shm_mem.h" /* shm_info() */

-#include "sr_module.h"

-#include "pt.h"

-#include "db/db_fifo.h"

-

-/* FIFO server vars */

-char *fifo=0; /* FIFO name */

-char* fifo_dir=DEFAULT_FIFO_DIR; /* dir where reply fifos are allowed */

-char *fifo_db_url = 0;

-pid_t fifo_pid;

-

-

-/* file descriptors */

-static int fifo_read=0;

-static int fifo_write=0;

-static FILE *fifo_stream=0;

-

-/* list of fifo command */

-static struct fifo_command *cmd_list=0;

-

-/* up time */

-static time_t up_since;

-static char up_since_ctime[MAX_CTIME_LEN];

-

-static struct fifo_command *lookup_fifo_cmd( char *name )

-{

-	struct fifo_command *c;

-	for(c=cmd_list; c; c=c->next) {

-		if (strcasecmp(c->name, name)==0) return c;

-	}

-	return 0;

-}

-

-int register_fifo_cmd(fifo_cmd f, char *cmd_name, void *param)

-{

-	struct fifo_command *new_cmd;

-

-	if (lookup_fifo_cmd(cmd_name)) {

-		LOG(L_ERR, "ERROR: register_fifo_cmd: attempt to register synonyms\n");

-		return E_BUG;

-	}

-	new_cmd=pkg_malloc(sizeof(struct fifo_command));

-	if (new_cmd==0) {

-		LOG(L_ERR, "ERROR: register_fifo_cmd: out of mem\n");

-		return E_OUT_OF_MEM;

-	}

-	new_cmd->f=f;

-	new_cmd->name=cmd_name;

-	new_cmd->param=param;

-

-	new_cmd->next=cmd_list;

-	cmd_list=new_cmd;

-	

-	DBG("DEBUG: register_fifo_cmd: new command (%s) registered\n", cmd_name );

-

-	return 1;

-}

-

-void destroy_fifo()

-{

-	struct fifo_command *c, *foo;

-

-	c=cmd_list;

-

-	while(c) {

-		foo=c->next;

-		pkg_free(c);

-		c=foo;

-	}

-	if (fifo_stream){

-			fclose(fifo_stream);

-			fifo_stream=0;

-		/* if  FIFO was created, delete it */

-		if (fifo && strlen(fifo)){

-			if (unlink(fifo)<0){

-				LOG(L_ERR, "WARNING: destroy_fifo: cannot delete fifo (%s):"

-							" %s\n", fifo, strerror(errno));

-			}

-		}

-	}

-}

-

-

-int read_line( char *b, int max, FILE *stream, int *read )

-{

-	int len;

-	int retry_cnt;

-

-	retry_cnt=0;

-

-retry:

-	if (fgets(b, max, stream)==NULL) {

-		LOG(L_ERR, "ERROR: fifo_server fgets failed: %s\n",

-			strerror(errno));

-		/* on Linux, fgets sometimes returns ESPIPE -- give

-		   it few more chances

-		*/

-		if (errno==ESPIPE) {

-			retry_cnt++;

-			if (retry_cnt<4) goto retry;

-		}

-		/* interrupted by signal or ... */

-		if ((errno==EINTR)||(errno==EAGAIN)) goto retry;

-		kill(0, SIGTERM);

-	}

-	/* if we did not read whole line, our buffer is too small

-	   and we cannot process the request; consume the remainder of 

-	   request

-	*/

-	len=strlen(b);

-	if (len && !(b[len-1]=='\n' || b[len-1]=='\r')) {

-		LOG(L_ERR, "ERROR: read_line: request  line too long\n");

-		return 0;

-	}

-	/* trim from right */

-	while(len) {

-		if(b[len-1]=='\n' || b[len-1]=='\r'

-				|| b[len-1]==' ' || b[len-1]=='\t' ) {

-			len--;

-			b[len]=0;

-		} else break;

-	}

-	*read=len;

-	return 1;

-}

-

-static void consume_request( FILE *stream )

-{

-	int len;

-	char buffer[MAX_CONSUME_BUFFER];

-

-	while(!read_line(buffer, MAX_CONSUME_BUFFER, stream, &len));

-

-}

-

-int read_eol( FILE *stream )

-{

-	int len;

-	char buffer[MAX_CONSUME_BUFFER];

-	if (!read_line(buffer, MAX_CONSUME_BUFFER, stream, &len) || len!=0) {

-		LOG(L_ERR, "ERROR: read_eol: EOL expected: %.10s...\n",

-			buffer );

-		return 0;

-	}

-	return 1;

-}

-

-/* read from input until empty line is encountered */	

-int read_line_set(char *buf, int max_len, FILE *fifo, int *len)

-{

-	int set_len;

-	char *c;

-	int line_len;

-

-	c=buf;set_len=0;

-	while(1) {

-		if (!read_line(c,max_len,fifo,&line_len)) {

-			LOG(L_ERR, "ERROR: fifo_server: line expected\n");

-			return 0;

-		}

-		/* end encountered ... return */

-		if (line_len==0 || (line_len==1 && c[0]=='.' )) {

-			*len=set_len;

-			return 1;

-		}

-		max_len-=line_len; c+=line_len; set_len+=line_len;

-		if (max_len<CRLF_LEN) {

-			LOG(L_ERR, "ERROR: fifo_server: no place for CRLF\n");

-			return 0;

-		}

-		memcpy(c, CRLF, CRLF_LEN);

-		max_len-=CRLF_LEN; c+=CRLF_LEN; set_len+=CRLF_LEN;

-	}

-}

-

-

-/* read from input until line with only dot in it is encountered */

-int read_body(char *buf, int max_len, FILE *fifo, int *len)

-{

-	int set_len;

-	char *c;

-	int line_len;

-

-	c=buf;set_len=0;

-	while(1) {

-		if (!read_line(c,max_len,fifo,&line_len)) {

-			LOG(L_ERR, "ERROR: fifo_server: line expected\n");

-			return 0;

-		}

-		/* end encountered ... return */

-		if (line_len==1 && *c=='.') {

-			*len=set_len;

-			return 1;

-		}

-		max_len-=line_len; c+=line_len; set_len+=line_len;

-		if (max_len<CRLF_LEN) {

-			LOG(L_ERR, "ERROR: fifo_server: no place for CRLF\n");

-			return 0;

-		}

-		memcpy(c, CRLF, CRLF_LEN);

-		max_len-=CRLF_LEN; c+=CRLF_LEN; set_len+=CRLF_LEN;

-	}

-}

-

-static char *trim_filename( char * file )

-{

-	int prefix_len, fn_len;

-	char *new_fn;

-

-	/* we only allow files in "/tmp" -- any directory

-	   changes are not welcome

-	*/

-	if (strchr(file,'.') || strchr(file,'/')

-				|| strchr(file, '\\')) {

-		LOG(L_ERR, "ERROR: trim_filename: forbidden filename: %s\n"

-			, file);

-		return 0;

-	}

-	prefix_len=strlen(fifo_dir); fn_len=strlen(file);

-	new_fn=pkg_malloc(prefix_len+fn_len+1);

-	if (new_fn==0) {

-		LOG(L_ERR, "ERROR: trim_filename: no mem\n");

-		return 0;

-	}

-

-	memcpy(new_fn, fifo_dir, prefix_len);

-	memcpy(new_fn+prefix_len, file, fn_len );

-	new_fn[prefix_len+fn_len]=0;

-

-	return new_fn;

-}

-

-

-

-/* reply fifo security checks:

- * checks if fd is a fifo, is not hardlinked and it's not a softlink

- * opened file descriptor + file name (for soft link check)

- * returns 0 if ok, <0 if not */

-static int fifo_check(int fd, char* fname)

-{

-	struct stat fst;

-	struct stat lst;

-	

-	if (fstat(fd, &fst)<0){

-		LOG(L_ERR, "ERROR: fifo_check: fstat failed: %s\n",

-				strerror(errno));

-		return -1;

-	}

-	/* check if fifo */

-	if (!S_ISFIFO(fst.st_mode)){

-		LOG(L_ERR, "ERROR: fifo_check: %s is not a fifo\n", fname);

-		return -1;

-	}

-	/* check if hard-linked */

-	if (fst.st_nlink>1){

-		LOG(L_ERR, "ERROR: security: fifo_check: %s is hard-linked %d times\n",

-				fname, (unsigned)fst.st_nlink);

-		return -1;

-	}

-	

-	/* lstat to check for soft links */

-	if (lstat(fname, &lst)<0){

-		LOG(L_ERR, "ERROR: fifo_check: lstat failed: %s\n",

-				strerror(errno));

-		return -1;

-	}

-	if (S_ISLNK(lst.st_mode)){

-		LOG(L_ERR, "ERROR: security: fifo_check: %s is a soft link\n",

-				fname);

-		return -1;

-	}

-	/* if this is not a symbolic link, check to see if the inode didn't

-	 * change to avoid possible sym.link, rm sym.link & replace w/ fifo race

-	 */

-	if ((lst.st_dev!=fst.st_dev)||(lst.st_ino!=fst.st_ino)){

-		LOG(L_ERR, "ERROR: security: fifo_check: inode/dev number differ"

-				": %d %d (%s)\n",

-				 (int)fst.st_ino, (int)lst.st_ino, fname);

-		return -1;

-	}

-	/* success */

-	return 0;

-}

-

-

-

-/* tell FIFO client what happened via reply pipe */

-void fifo_reply( char *reply_fifo, char *reply_fmt, ... )

-{

-	FILE *file_handle;

-	int r;

-	va_list ap;

-

-	file_handle=open_reply_pipe(reply_fifo);

-	if (file_handle==0) {

-		LOG(L_ERR, "ERROR: fifo_reply: no reply pipe %s\n",

-			reply_fifo);

-		return;

-	}

-retry:

-	va_start(ap, reply_fmt);

-	r=vfprintf(file_handle, reply_fmt, ap);

-	va_end(ap);

-	if (r<=0) {

-		LOG(L_ERR, "ERROR: fifo_error: write error (%s): %s\n",

-			fifo, strerror(errno));

-		if ((errno==EINTR)||(errno==EAGAIN)||(errno==EWOULDBLOCK)) {

-			goto retry;

-		}

-	}

-	fclose(file_handle);

-}

-

-FILE *open_reply_pipe( char *pipe_name )

-{

-

-	int fifofd;

-	FILE *file_handle;

-	int flags;

-

-	int retries=FIFO_REPLY_RETRIES;

-

-	if (!pipe_name || *pipe_name==0) {

-		DBG("DEBUG: open_reply_pipe: no file to write to about missing cmd\n");

-		return 0;

-	}

-

-tryagain:

-	/* open non-blocking to make sure that a broken client will not 

-	 * block the FIFO server forever */

-	fifofd=open( pipe_name, O_WRONLY | O_NONBLOCK );

-	if (fifofd==-1) {

-		/* retry several times if client is not yet ready for getting

-		   feedback via a reply pipe

-		*/

-		if (errno==ENXIO) {

-			/* give up on the client - we can't afford server blocking */

-			if (retries==0) {

-				LOG(L_ERR, "ERROR: open_reply_pipe: no client at %s\n",

-					pipe_name );

-				return 0;

-			}

-			/* don't be noisy on the very first try */

-			if (retries!=FIFO_REPLY_RETRIES)

-				DBG("DEBUG: open_reply_pipe: retry countdown: %d\n", retries );

-			sleep_us( FIFO_REPLY_WAIT );

-			retries--;

-			goto tryagain;

-		}

-		/* some other opening error */

-		LOG(L_ERR, "ERROR: open_reply_pipe: open error (%s): %s\n",

-			pipe_name, strerror(errno));

-		return 0;

-	}

-	/* security checks: is this really a fifo?, is 

-	 * it hardlinked? is it a soft link? */

-	if (fifo_check(fifofd, pipe_name)<0) goto error;

-	

-	/* we want server blocking for big writes */

-	if ( (flags=fcntl(fifofd, F_GETFL, 0))<0) {

-		LOG(L_ERR, "ERROR: open_reply_pipe (%s): getfl failed: %s\n",

-			pipe_name, strerror(errno));

-		goto error;

-	}

-	flags&=~O_NONBLOCK;

-	if (fcntl(fifofd, F_SETFL, flags)<0) {

-		LOG(L_ERR, "ERROR: open_reply_pipe (%s): setfl cntl failed: %s\n",

-			pipe_name, strerror(errno));

-		goto error;

-	}

-

-	/* create an I/O stream */	

-	file_handle=fdopen( fifofd, "w");

-	if (file_handle==NULL) {

-		LOG(L_ERR, "ERROR: open_reply_pipe: open error (%s): %s\n",

-			pipe_name, strerror(errno));

-		goto error;

-	}

-	return file_handle;

-error:

-	close(fifofd);

-	return 0;

-}

-

-static void fifo_server(FILE *fifo_stream)

-{

-	char buf[MAX_FIFO_COMMAND];

-	int line_len;

-	char *file_sep, *command, *file;

-	struct fifo_command *f;

-

-	file_sep=command=file=0;

-

-	/* register a diagnostic FIFO command */

-	register_core_fifo();

-

-	while(1) {

-

-		/* commands must look this way ':<command>:[filename]' */

-		if (!read_line(buf, MAX_FIFO_COMMAND, fifo_stream, &line_len)) {

-			/* line breaking must have failed -- consume the rest

-			   and proceed to a new request

-			*/

-			LOG(L_ERR, "ERROR: fifo_server: command expected\n");

-			goto consume;

-		}

-		if (line_len==0) {

-			LOG(L_DBG, "INFO: fifo_server: command empty\n");

-			continue;

-		}

-		if (line_len<3) {

-			LOG(L_ERR, "ERROR: fifo_server: command must have at least 3 chars\n");

-			goto consume;

-		}

-		if (*buf!=CMD_SEPARATOR) {

-			LOG(L_ERR, "ERROR: fifo_server: command must begin with %c: %.*s\n", 

-				CMD_SEPARATOR, line_len, buf );

-			goto consume;

-		}

-		command=buf+1;

-		file_sep=strchr(command, CMD_SEPARATOR );

-		if (file_sep==NULL) {

-			LOG(L_ERR, "ERROR: fifo_server: file separator missing\n");

-			goto consume;

-		}

-		if (file_sep==command) {

-			LOG(L_ERR, "ERROR: fifo_server: empty command\n");

-			goto consume;

-		}

-		if (*(file_sep+1)==0) file=NULL; 

-		else {

-			file=file_sep+1;

-			file=trim_filename(file);

-			if (file==0) {

-				LOG(L_ERR, "ERROR: fifo_server: trimming filename\n");

-				goto consume;

-			}

-		}

-		/* make command zero-terminated */

-		*file_sep=0;

-

-		f=lookup_fifo_cmd( command );

-		if (f==0) {

-			LOG(L_ERR, "ERROR: fifo_server: command %s is not available\n",

-				command);

-			fifo_reply(file, "500 command '%s' not available\n", command);

-			goto consume;

-		}

-		if (f->f(fifo_stream, file)<0) {

-			LOG(L_ERR, "ERROR: fifo_server: command (%s) "

-				"processing failed\n", command );

-			goto consume;

-		}

-

-consume:

-		if (file) { pkg_free(file); file=0;}

-		consume_request(fifo_stream);

-		DBG("**** done consume\n");

-	}

-}

-

-int init_fifo_server()

-{

-	char *t;

-	struct stat filestat;

-	int n;

-	long opt;

-

-	if (fifo==NULL) {

-		DBG("DBG: open_fifo_server: no fifo will be opened\n");

-		/* everything is ok, we just do not want to start */

-		return 1;

-	}

-	if (strlen(fifo)==0) {

-		DBG("DBG: open_fifo_server: fifo disabled\n");

-		return 1;

-	}

-	DBG("DBG: open_uac_fifo: opening fifo...\n");

-	n=stat(fifo, &filestat);

-	if (n==0){

-		/* FIFO exist, delete it (safer) */

-		if (unlink(fifo)<0){

-			LOG(L_ERR, "ERROR: open_fifo_server: cannot delete old fifo (%s):"

-					" %s\n", fifo, strerror(errno));

-			return -1;

-		}

-	}else if (n<0 && errno!=ENOENT){

-		LOG(L_DBG, "DEBUG: open_fifo_server: FIFO stat failed: %s\n",

-			strerror(errno));

-	}

-		/* create FIFO ... */

-		if ((mkfifo(fifo, sock_mode)<0)) {

-			LOG(L_ERR, "ERROR: open_fifo_server; can't create FIFO: "

-					"%s (mode=%d)\n",

-					strerror(errno), sock_mode);

-			return -1;

-		} 

-		DBG("DEBUG: FIFO created @ %s\n", fifo );

-		if ((chmod(fifo, sock_mode)<0)) {

-			LOG(L_ERR, "ERROR: open_fifo_server; can't chmod FIFO: "

-					"%s (mode=%d)\n",

-					strerror(errno), sock_mode);

-			return -1;

-		}

-		if ((sock_uid!=-1) || (sock_gid!=-1)){

-			if (chown(fifo, sock_uid, sock_gid)<0){

-			LOG(L_ERR, "ERROR: open_fifo_server: failed to change the"

-					" owner/group for %s  to %d.%d; %s[%d]\n",

-					fifo, sock_uid, sock_gid, strerror(errno), errno);

-			return -1;

-		}

-	}

-

-		

-	DBG("DEBUG: fifo %s opened, mode=%d\n", fifo, sock_mode );

-	time(&up_since);

-	t=ctime(&up_since);

-	if (strlen(t)+1>=MAX_CTIME_LEN) {

-		LOG(L_ERR, "ERROR: open_fifo_server: "

-			"too long date %d\n", (int)strlen(t));

-		return -1;

-	}

-	memcpy(up_since_ctime,t,strlen(t)+1);

-	/* open it non-blocking or else wait here until someone

-	 * opens it for writing */

-	fifo_read=open(fifo, O_RDONLY|O_NONBLOCK, 0);

-	if (fifo_read<0) {

-		LOG(L_ERR, "ERROR: init_fifo_server: fifo_read did not open: %s\n",

-			strerror(errno));

-		return -1;

-	}

-	fifo_stream=fdopen(fifo_read, "r");

-	if (fifo_stream==NULL) {

-		LOG(L_ERR, "ERROR: init_fifo_server: fdopen failed: %s\n",

-			strerror(errno));

-		return -1;

-	}

-	/* make sure the read fifo will not close */

-	fifo_write=open(fifo, O_WRONLY|O_NONBLOCK, 0);

-	if (fifo_write<0) {

-		LOG(L_ERR, "ERROR: init_fifo_server: fifo_write did not open: %s\n",

-			strerror(errno));

-		return -1;

-	}

-	/* set read fifo blocking mode */

-	if ((opt=fcntl(fifo_read, F_GETFL))==-1){

-		LOG(L_ERR, "ERROR: init_fifo_server: fcntl(F_GETFL) failed: %s [%d]\n",

-				strerror(errno), errno);

-		return -1;

-	}

-	if (fcntl(fifo_read, F_SETFL, opt & (~O_NONBLOCK))==-1){

-		LOG(L_ERR, "ERROR: init_fifo_server: fcntl(F_SETFL) failed: %s [%d]\n",

-				strerror(errno), errno);

-		return -1;

-	}

-	return 0;

-}

-

-

-

-int start_fifo_server()

-{

-#ifdef USE_TCP

-	int sockfd[2];

-#endif

-	if (fifo_stream==0) return 1; /* no error, we just don't start it */

-#ifdef USE_TCP

-	if (socketpair(AF_UNIX, SOCK_STREAM, 0, sockfd)<0){

-			LOG(L_ERR, "ERROR: open_fifo_server: socketpair failed: %s\n",

-				strerror(errno));

-			return -1;

-	}

-#endif

-	process_no++;

-	fifo_pid=fork();

-	if (fifo_pid<0) {

-		LOG(L_ERR, "ERROR: open_fifo_server: failure to fork: %s\n",

-			strerror(errno));

-		return -1;

-	}

-	if (fifo_pid==0) { /* child == FIFO server */

-		/* record pid twice to avoid the child using it, before

-		 * parent gets a chance to set it*/

-		pt[process_no].pid=getpid();

-		LOG(L_INFO, "INFO: fifo process starting: %d\n", getpid());

-		/* call per-child module initialization too -- some

-		   FIFO commands may need it

-		*/

-#ifdef USE_TCP

-		close(sockfd[0]);

-		unix_tcp_sock=sockfd[1];

-#endif

-		if (init_child(PROC_FIFO) < 0 ) {

-			LOG(L_ERR, "ERROR: open_uac_fifo: init_child failed\n");

-			return -1;

-		}

-		/* a real server doesn't die if writing to reply fifo fails */

-		signal(SIGPIPE, SIG_IGN);

-		LOG(L_INFO, "SER: open_uac_fifo: fifo server up at %s...\n",

-			fifo);

-		fifo_server( fifo_stream ); /* never returns */

-	}

-	/* dad process */

-	pt[process_no].pid=fifo_pid;

-	strncpy(pt[process_no].desc, "fifo server", MAX_PT_DESC );

-#ifdef USE_TCP

-	close(sockfd[1]);

-	pt[process_no].unix_sock=sockfd[0];

-	pt[process_no].idx=-1; /* this is not "tcp" process*/

-#endif

-	return 1;

-}

-

-static int print_version_cmd( FILE *stream, char *response_file )

-{

-	if (response_file) {

-		fifo_reply(response_file, "200 ok\n" SERVER_HDR CRLF );

-	} else {

-		LOG(L_ERR, "ERROR: no file for %s\n", "print_version_cmd" );

-	}

-	return 1;

-}

-

-static int pwd_cmd( FILE *stream, char *response_file )

-{

-	char *cwd_buf;

-	int max_len;

-

-	if (!response_file) {

-		LOG(L_ERR, "ERROR: no file for %s\n", "pwd_cmd" );

-		return 1;

-	}

-

-	max_len=pathmax();

-	cwd_buf=pkg_malloc(max_len);

-	if (!cwd_buf) {

-		LOG(L_ERR, "ERROR: pwd_cmd: no cwd pkg mem\n");

-		fifo_reply(response_file, "500 no memory\n");

-		return 1;

-	}

-

-	if (getcwd(cwd_buf, max_len)) {

-		fifo_reply(response_file, "200 ok\n%s\n", cwd_buf );

-	} else {

-		fifo_reply(response_file, "500 getcwd failed\n" );

-	}

-

-	pkg_free(cwd_buf);

-	return 1;

-}

-

-static int arg_cmd( FILE *stream, char *response_file )

-{

-	FILE *reply_pipe;

-	int p;

-

-	if (response_file==0 || *response_file==0 ) {

-		 LOG(L_ERR, "ERROR: ps_fifo_cmd: null file\n");

-		return -1;

-	}

-	reply_pipe=open_reply_pipe(response_file);

-	if (reply_pipe==NULL) {

-		LOG(L_ERR, "ERROR: ps_fifo_cmd: opening reply pipe (%s) failed\n",

-			response_file );

-		return -1;

-	}

-

-	fputs( "200 ok\n", reply_pipe);

-	for (p=0; p<my_argc;p++) 

-			fprintf( reply_pipe, "%s\n", my_argv[p] );

-			

-	fclose(reply_pipe);

-	return 1;

-}

-

-	

-

-/* diagnostic and hello-world FIFO command */

-static int print_fifo_cmd( FILE *stream, char *response_file )

-{

-	char text[MAX_PRINT_TEXT];

-	int text_len;

-	

-	/* expect one line which will be printed out */

-	if (response_file==0 || *response_file==0 ) { 

-		LOG(L_ERR, "ERROR: print_fifo_cmd: null file\n");

-		return -1;

-	}

-	if (!read_line(text, MAX_PRINT_TEXT, stream, &text_len)) {

-		fifo_reply(response_file, 

-			"500 print_fifo_cmd: too big text");

-		return -1;

-	}

-	/* now the work begins */

-	if (response_file) {

-		fifo_reply(response_file, "200 ok\n%s\n", text );

-	} else {

-		LOG(L_INFO, "INFO: print_fifo_cmd: %.*s\n", 

-			text_len, text );

-	}

-	return 1;

-}

-

-static int uptime_fifo_cmd( FILE *stream, char *response_file )

-{

-	time_t now;

-

-	if (response_file==0 || *response_file==0 ) { 

-		LOG(L_ERR, "ERROR: uptime_fifo_cmd: null file\n");

-		return -1;

-	}

-

-	time(&now);

-	fifo_reply( response_file, "200 ok\n"

-		"Now: %sUp Since: %sUp time: %.0f [sec]\n",

-		ctime(&now), up_since_ctime, difftime(now, up_since) );

-

-	return 1;

-}

-

-static int kill_fifo_cmd( FILE *stream, char *response_file )

-{

-	if (response_file==0 || *response_file==0 ) { 

-		LOG(L_ERR, "ERROR: uptime_fifo_cmd: null file\n");

-		return -1;

-	}

-	fifo_reply(response_file, "200 killing now..." );

-	kill(0, SIGTERM);

-	return 1;

-}

-

-static int which_fifo_cmd(FILE *stream, char *response_file )

-{

-	FILE *reply_pipe;

-	struct fifo_command *c;

-

-	if (response_file==0 || *response_file==0 ) {

-		 LOG(L_ERR, "ERROR: which_fifo_cmd: null file\n");

-		return -1;

-	}

-

-	reply_pipe=open_reply_pipe(response_file);

-	if (reply_pipe==NULL) {

-		LOG(L_ERR, "ERROR: which_fifo_cmd: opening reply pipe (%s) failed\n",

-			response_file );

-		return -1;

-	}

-	fputs( "200 ok\n", reply_pipe);

-	for(c=cmd_list; c; c=c->next) {

-		fprintf( reply_pipe, "%s\n", c->name );

-	}

-

-	fclose(reply_pipe);

-	return 1;

-}

-

-static int ps_fifo_cmd(FILE *stream, char *response_file )

-{

-	FILE *reply_pipe;

-	int p;

-

-	if (response_file==0 || *response_file==0 ) {

-		 LOG(L_ERR, "ERROR: ps_fifo_cmd: null file\n");

-		return -1;

-	}

-	reply_pipe=open_reply_pipe(response_file);

-	if (reply_pipe==NULL) {

-		LOG(L_ERR, "ERROR: ps_fifo_cmd: opening reply pipe (%s) failed\n",

-			response_file );

-		return -1;

-	}

-

-	fputs( "200 ok\n", reply_pipe);

-	for (p=0; p<process_count;p++) 

-		fprintf( reply_pipe, "%d\t%d\t%s\n",

-			p, pt[p].pid, pt[p].desc );

-

-	fclose(reply_pipe);

-	return 1;

-}

-

-

-

-static int meminfo_fifo_cmd( FILE *stream, char *response_file )

-{

-	struct mem_info mi;

-