1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836
|
#ifndef lint
static char *RCSid = "$Id: extstack.c,v 1.19 2004/04/18 02:54:33 florian Exp $";
#endif
/*
* The Regina Rexx Interpreter
* Copyright (C) 1992-1994 Anders Christensen <anders@pvv.unit.no>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if defined(__WATCOMC__) && defined(OS2)
# include <os2/types.h>
#endif
#include "rexx.h"
#ifdef EXTERNAL_TO_REGINA
# include <assert.h>
/* tmpstr_of must be defined before the inclusion of extstack.h since it
* redefines tsd_t (grrr) */
volatile char *tmpstr_of( tsd_t *TSD, const streng *input )
{
/* even exiterror isn't permitted at this point. */
assert(0); /* hint while debugging */
return((volatile char *) input->value);
}
#endif
#if defined(WIN32)
# if defined(_MSC_VER)
# if _MSC_VER >= 1100
/* Stupid MSC can't compile own headers without warning at least in VC 5.0 */
# pragma warning(disable: 4115 4201 4214 4514)
# endif
# include <windows.h>
# if _MSC_VER >= 1100
# pragma warning(default: 4115 4201 4214)
# endif
# else
# include <windows.h>
# include <winsock.h>
# endif
# include <io.h>
#else
# ifdef HAVE_TYPES_H
# include <types.h>
# endif
# ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
# endif
# ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
# endif
# ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
# endif
# ifdef HAVE_NETDB_H
# include <netdb.h>
# endif
# ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
# endif
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdarg.h>
#include "extstack.h"
static int debug = -1 ;
#define DEBUGDUMP(x) { \
if ( debug == -1 ) \
{ \
debug = ( getenv( "RXDEBUG" ) == NULL ) ? 0 : 1 ; \
} \
if ( debug ) \
{ \
x ; \
} \
}
/* "localhost" maps to "127.0.0.1" on most systems but it may use DNS on
* badly configured systems. Use "127.0.0.1" to bypass any errors.
*/
static const char ReginaLocalHost[] = "127.0.0.1";
void showerror( int err, int suberr, char *tmpl, ...)
{
va_list argptr;
if ( suberr )
fprintf( stderr, "Error:%d.%d - ", err, suberr );
else
fprintf( stderr, "Error:%d - ", err );
va_start( argptr, tmpl );
vfprintf( stderr, tmpl, argptr );
va_end( argptr );
fprintf( stderr, "\n" );
}
int init_external_queue( const tsd_t *TSD )
{
int rc=0;
#ifdef WIN32
WORD wsver = (WORD)MAKEWORD(1,1);
WSADATA wsaData;
if ( WSAStartup( wsver, &wsaData ) != 0 )
{
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_NO_WINSOCK, ERR_RXSTACK_NO_WINSOCK_TMPL, WSAGetLastError() );
else if ( !TSD->called_from_saa )
exiterror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_NO_WINSOCK, WSAGetLastError() );
rc = 1;
}
#else
TSD = TSD; /* keep compiler happy */
#endif
return rc;
}
void term_external_queue( void )
{
#ifdef WIN32
WSACleanup();
#endif
}
int get_length_from_header( const tsd_t *TSD, const streng *header )
{
int length=0,error=1;
streng *result=NULL;
result = MAKESTRENG( RXSTACK_HEADER_SIZE - 1 );
if ( result )
{
result->len = RXSTACK_HEADER_SIZE - 1;
memcpy( result->value, header->value+1, RXSTACK_HEADER_SIZE-1 );
DEBUGDUMP(printf("Hex value: %.*s\n", PSTRENGLEN(result),PSTRENGVAL(result)););
length = REXX_X2D( result, &error );
DROPSTRENG( result );
}
return ( error ) ? 0 : length;
}
#if !defined(NO_EXTERNAL_QUEUES)
int default_port_number( void )
{
int portno;
char dummy;
char *port = getenv("RXSTACK"); /* FIXME: May be overwritten by VALUE-BIF */
if ( port != NULL )
{
if ( sscanf( port, "%d %c", &portno, &dummy ) == 1 )
if ( (portno > 1) && (portno < 0xFFFF) )
return portno;
}
return RXSOCKET;
}
int default_external_address( void )
{
return inet_addr( ReginaLocalHost );
}
streng *default_external_name( const tsd_t *TSD )
{
int len;
streng *result;
len = sizeof(ReginaLocalHost); /* includes the term. \0 */
result = MAKESTRENG( len );
result->len = len - 1;
memcpy( result->value, ReginaLocalHost, len ) ;
return result ;
}
int connect_to_rxstack( tsd_t *TSD, Queue *q )
{
struct sockaddr_in server;
int eno;
/*
* Connect to external rxstack process/daemon/service
*/
assert( q->type == QisExternal ) ;
DEBUGDUMP(printf("In connect_to_rxstack: q = {name=%.*s, address=%08X, portno=%d}\n", q->u.e.name->len, q->u.e.name->value, q->u.e.address, q->u.e.portno););
memset( &server, 0, sizeof(server) );
server.sin_family = AF_INET;
server.sin_addr.s_addr = q->u.e.address;
server.sin_port = htons((unsigned short) q->u.e.portno);
q->u.e.socket = socket( AF_INET, SOCK_STREAM, 0 );
if ( q->u.e.socket >= 0 )
{
if ( connect( q->u.e.socket, (struct sockaddr *)&server, sizeof(server) ) >= 0 )
{
DEBUGDUMP(printf("In connect_to_rxstack: socket=%d\n", q->u.e.socket););
return(q->u.e.socket);
}
eno = errno;
close(q->u.e.socket);
q->u.e.socket = -1;
errno = eno;
}
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_CANT_CONNECT, ERR_RXSTACK_CANT_CONNECT_TMPL, q->u.e.name, q->u.e.portno, strerror ( errno ) );
else if ( !TSD->called_from_saa )
exiterror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_CANT_CONNECT, tmpstr_of( (void *) TSD, q->u.e.name ), q->u.e.portno, strerror ( errno ) );
return -1;
}
int disconnect_from_rxstack( const tsd_t *TSD, Queue *q )
{
int rc;
assert( q->type == QisExternal ) ;
if (q->u.e.socket != -1)
{
DEBUGDUMP(printf("Diconnecting from socket %d\n", q->u.e.socket ););
rc = send_command_to_rxstack( TSD, q->u.e.socket, RXSTACK_EXIT_STR, NULL, 0 );
close( q->u.e.socket );
}
else
rc = 0; /* success: 0 bytes transfered */
if (q->u.e.name != NULL)
DROPSTRENG( q->u.e.name );
memset( q, 0, sizeof(Queue) ) ;
q->type = QisUnused ;
return rc;
}
int send_command_to_rxstack( const tsd_t *TSD, int sock, const char *action, const char *str, int len )
{
streng *qlen, *header;
int rc=-1;
DEBUGDUMP(printf("Sending to %d Action: %s <%.*s> Len:%d\n", sock, action, len, (str) ? str : "", len););
qlen = REXX_D2X( len );
if ( qlen )
{
header = REXX_RIGHT( qlen, RXSTACK_HEADER_SIZE, '0');
DROPSTRENG( qlen );
if ( header )
{
header->value[0] = action[0];
rc = send( sock, PSTRENGVAL(header), PSTRENGLEN(header), 0 );
DEBUGDUMP(printf("Send length: %.*s(%d) rc %d\n", PSTRENGLEN(header),PSTRENGVAL(header),PSTRENGLEN(header),rc););
if ( str && rc != -1 )
{
rc = send( sock, str, len, 0 );
DEBUGDUMP(printf("Send str length: %d\n", rc););
}
DROPSTRENG( header );
}
}
return rc;
}
static int inject_result_from_rxstack( int sock, streng *str, int size )
{
/*
* Reads size bytes from sock and adds them to str. No overflow checking
* is performed.
* returns the result from recv.
*/
int rc;
rc = recv( sock, PSTRENGVAL(str) + PSTRENGLEN(str), size, 0 );
DEBUGDUMP(printf("Recv result: %.*s(%d) rc %d\n", size, PSTRENGVAL(str) + PSTRENGLEN(str), PSTRENGLEN(str), rc ); );
str->len += size;
return rc;
}
streng *read_result_from_rxstack( const tsd_t *TSD, int sock, int result_size )
{
/*
* Creates a streng of length 'result_size' and if non-zero,
* reads this many characters from the socket.
* The caller MUST DROPSTRENG this streng.
*/
streng *result;
int rc;
result = MAKESTRENG( result_size );
if ( result )
{
if ( result_size )
{
result->len = 0 ; /* MAKESTRENG sets ->len to nonzero sometimes */
rc = inject_result_from_rxstack( sock, result, result_size );
}
}
return result;
}
/* parse_queue validates the queue name. The format is [queue][@host[:port]]
* *eq is filled and may contain default values.
* queue may be empty to designate the current/default queue.
* host may be empty to designate the local host. It has to be either a
* IPv4 hostname or a IPv4 IP address.
* The [@host[:port]] part is chopped off and the pure queue name remains.
* return values:
* -code: error detected (exiterror() is thrown normally!), code is one
* or RXQUEUE_...
* 0: queue is NULL
* 1: queue is parsed successfully, either with or without host part.
*/
int parse_queue( tsd_t *TSD, streng *queue, Queue *q )
{
int len, AtPos;
char *h, dummy;
struct hostent *he;
q->type = QisExternal ;
q->u.e.portno = 0; /* Good practise for initialisation */
q->u.e.socket = -1;
q->u.e.address = 0;
q->u.e.name = NULL;
if ( queue == NULL )
return 0 ;
len = PSTRENGLEN( queue );
if (( h = memchr( PSTRENGVAL( queue ), '@', len ) ) == NULL )
return 1 ;
AtPos = (int) ( h - PSTRENGVAL( queue ) ) ;
h++ ;
len -= AtPos + 1 ;
/* h is at host, len contains its length. We now do a trick. We copy the
* complete host part into q->u.e.name, but a '\0' appended. We can simply
* check out the portno part and we can apply sscanf() on it. Working with
* a temporary buffer for the portno has no benefit, we can save 5 byte
* per connection with a maximum of 1 permanent connection ==> 5 byte
*/
q->u.e.name = MAKESTRENG( len + 1 ) ;
if (q->u.e.name == NULL )
{
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_STORAGE_EXHAUSTED, 0, ERR_STORAGE_EXHAUSTED_TMPL );
else if ( !TSD->called_from_saa )
exiterror( ERR_STORAGE_EXHAUSTED, 0 );
return -4; /* RXQUEUE_NOEMEM */
}
memcpy( PSTRENGVAL( q->u.e.name ), h, len ) ;
PSTRENGVAL( q->u.e.name )[len] = '\0' ;
q->u.e.name->len = len ;
if (( h = memchr( PSTRENGVAL( q->u.e.name ), ':', len ) ) == NULL )
q->u.e.portno = default_port_number();
else
{
q->u.e.name->len = (int) ( h - PSTRENGVAL( q->u.e.name ) ) ;
*h++ = '\0' ; /* chop off the portno part and jump over ':' */
if ( sscanf( h, "%d %c", &q->u.e.portno, &dummy ) != 1 )
q->u.e.portno = 0;
if ( ( q->u.e.portno < 1 ) || ( q->u.e.portno > 0xFFFF ) )
{
if ( TSD == NULL )
showerror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INVALID_QUEUE, ERR_RXSTACK_INVALID_QUEUE_TMPL, PSTRENGVAL( queue ) );
else if ( !TSD->called_from_saa )
exiterror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INVALID_QUEUE, tmpstr_of( (void *) TSD, queue ) );
DROPSTRENG( q->u.e.name ) ;
q->u.e.name = NULL ;
return -5; /* RXQUEUE_BADQNAME */
}
}
h = PSTRENGVAL( q->u.e.name ) ;
if ( *h == '\0' )
{
q->u.e.address = default_external_address();
DROPSTRENG( q->u.e.name );
q->u.e.name = default_external_name( TSD );
}
else
{
/* h is either a dotted name or a host name, always try the dotted one
* first. It's MUCH faster.
*/
q->u.e.address = inet_addr( h );
if ( ( q->u.e.address == 0 ) || ( q->u.e.address == -1 ) ) /* various errors */
{
he = gethostbyname( h ) ;
if ( ( he != NULL )
&& ( he->h_addr != NULL )
&& ( he->h_addrtype == AF_INET ) )
q->u.e.address = ( ( struct in_addr * ) he->h_addr )->s_addr;
if ( ( q->u.e.address == 0 ) || ( q->u.e.address == -1 ) )
{
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_NO_IP, ERR_RXSTACK_NO_IP_TMPL, PSTRENGVAL( q->u.e.name ) );
else if ( !TSD->called_from_saa )
exiterror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_NO_IP, tmpstr_of( (void *) TSD, q->u.e.name ) );
DROPSTRENG( q->u.e.name ) ;
q->u.e.name = NULL ;
return -5; /* RXQUEUE_BADQNAME */
}
}
}
queue->len = AtPos ; /* chop off the host part */
return 1 ;
}
int delete_queue_from_rxstack( const tsd_t *TSD, int sock, const streng *queue_name )
{
int rc;
streng *result;
rc = send_command_to_rxstack( TSD, sock, RXSTACK_DELETE_QUEUE_STR, PSTRENGVAL( queue_name ), PSTRENGLEN( queue_name ) );
if ( rc != -1 )
{
result = read_result_from_rxstack( TSD, sock, RXSTACK_HEADER_SIZE );
if ( result )
{
rc = result->value[0]-'0';
DROPSTRENG( result );
}
}
return rc;
}
int timeout_queue_on_rxstack( const tsd_t *TSD, int sock, long timeout )
{
int rc=0;
streng *result,*qtimeout, *hex_timeout;
qtimeout = REXX_D2X( timeout );
if ( qtimeout )
{
hex_timeout = REXX_RIGHT( qtimeout, RXSTACK_TIMEOUT_SIZE, '0');
DROPSTRENG( qtimeout );
if ( hex_timeout )
{
DEBUGDUMP(printf("Send timeout: %.*s(%d) rc %d\n", PSTRENGLEN(hex_timeout),PSTRENGVAL(hex_timeout),PSTRENGLEN(hex_timeout),rc););
rc = send_command_to_rxstack( TSD, sock, RXSTACK_TIMEOUT_QUEUE_STR, PSTRENGVAL(hex_timeout), PSTRENGLEN(hex_timeout) );
DROPSTRENG( hex_timeout );
if ( rc != -1 )
{
result = read_result_from_rxstack( TSD, sock, RXSTACK_HEADER_SIZE );
if ( result )
{
rc = result->value[0]-'0';
DROPSTRENG( result );
}
}
}
}
return rc;
}
int get_number_in_queue_from_rxstack( const tsd_t *TSD, int sock, int *errcode )
{
int rc,length=0;
streng *header;
rc = send_command_to_rxstack( TSD, sock, RXSTACK_NUMBER_IN_QUEUE_STR, NULL, 0 );
if ( rc != -1 )
{
header = read_result_from_rxstack( TSD, sock, RXSTACK_HEADER_SIZE );
if ( header )
{
rc = header->value[0]-'0';
if ( rc == 0 )
{
/*
* now get the length from the header
*/
DEBUGDUMP(printf("before get_length_from_header: %.*s\n", header->len, header->value););
length = get_length_from_header( TSD, header );
}
else
{
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, ERR_RXSTACK_INTERNAL_TMPL, rc, "Getting number in queue" );
else if ( !TSD->called_from_saa )
exiterror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, rc, "Getting number in queue" );
rc = 9; /* RXQUEUE_NOTREG */
}
DROPSTRENG( header );
}
}
if ( errcode )
*errcode = rc;
return length;
}
int clear_queue_on_rxstack( const tsd_t *TSD, int sock )
{
int rc ;
streng *result ;
rc = send_command_to_rxstack( TSD, sock, RXSTACK_EMPTY_QUEUE_STR, NULL, 0 );
if ( rc != -1 )
{
result = read_result_from_rxstack( TSD, sock, RXSTACK_HEADER_SIZE );
if ( result )
{
rc = result->value[0]-'0';
DROPSTRENG( result );
}
}
return rc ;
}
static streng *init_connect_string( const tsd_t *TSD, const Queue *q, int addlength )
{
/* Determines the length of the connect string of eq and sums up
* addlength. A streng of that size is created and returned.
*/
streng *retval ;
int len = 0 ;
assert( q->type == QisExternal ) ;
if ( q->u.e.name != 0 )
len = PSTRENGLEN( q->u.e.name ) ;
if ( len == 0 )
len = 15 ; /* enough for "xxx.xxx.xxx.xxx" */
len += 8 ; /* enough for "@" and ":65535" and a terminating 0 */
retval = MAKESTRENG( len + addlength ) ;
if ( retval == NULL )
{
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_STORAGE_EXHAUSTED, 0, ERR_STORAGE_EXHAUSTED_TMPL );
else if ( !TSD->called_from_saa )
exiterror( ERR_STORAGE_EXHAUSTED, 0 );
}
else
retval->len = 0 ; /* MAKESTRENG sets ->len to nonzero sometimes */
return retval ;
}
static void add_connect_string( const Queue *q, streng *str )
{
/* Adds the connect string of eq to str.
* This may be "@localhost:5757"
* We always add the port. It may be redefined in between by a call to
* the VALUE BIF.
*/
int sum = 0, len ;
char *ptr = PSTRENGVAL( str ) ;
char *addr ;
struct in_addr ia ;
assert( q->type == QisExternal ) ;
ptr += PSTRENGLEN( str ) ;
*ptr++ = '@' ;
sum++ ;
if ( q->u.e.name != 0 )
{
len = PSTRENGLEN( q->u.e.name ) ;
memcpy( ptr, PSTRENGVAL( q->u.e.name ), len ) ;
ptr += len ;
sum += len ;
}
if ( sum == 1 ) /* no q->u.e.name? use the dotted IP address */
{
ia.s_addr = q->u.e.address ;
addr = inet_ntoa( ia ) ;
len = strlen( addr ) ;
memcpy( ptr, addr, len ) ;
ptr += len ;
sum += len ;
}
/* finally add the port */
sum += sprintf( ptr, ":%u", (unsigned) q->u.e.portno ) ;
str->len += sum ;
}
int get_queue_from_rxstack( const tsd_t *TSD, const Queue *q, streng **result )
{
int rc,length;
streng *header;
assert( q->type == QisExternal ) ;
rc = send_command_to_rxstack( TSD, q->u.e.socket, RXSTACK_GET_QUEUE_STR, NULL, 0 );
if ( rc != -1 )
{
header = read_result_from_rxstack( TSD, q->u.e.socket, RXSTACK_HEADER_SIZE );
if ( header )
{
rc = header->value[0]-'0';
if ( rc == 0 )
{
/*
* now get the length from the header and get that many characters...
*/
length = get_length_from_header( TSD, header );
if ( ( *result = init_connect_string( TSD, q, length ) ) != NULL )
{
inject_result_from_rxstack( q->u.e.socket, *result, length ) ;
add_connect_string( q, *result );
}
else
rc = 4; /* RXQUEUE_NOEMEM, not really used */
}
else
{
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, ERR_RXSTACK_INTERNAL_TMPL, rc, "Getting queue from stack" );
else if ( !TSD->called_from_saa )
exiterror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, rc, "Getting queue from stack" );
}
DROPSTRENG( header );
}
}
return rc;
}
int get_line_from_rxstack( const tsd_t *TSD, int sock, streng **result, int nowait )
{
int rc,length;
streng *header;
rc = send_command_to_rxstack( TSD, sock, (nowait) ? RXSTACK_FETCH_STR : RXSTACK_PULL_STR, NULL, 0 );
if ( rc != -1 )
{
header = read_result_from_rxstack( TSD, sock, RXSTACK_HEADER_SIZE );
if ( header )
{
rc = header->value[0]-'0';
if ( rc == 0 )
{
/*
* now get the length from the header and get that many characters...
*/
length = get_length_from_header( TSD, header );
*result = read_result_from_rxstack( TSD, sock, length );
}
else if ( rc == 1 || rc == 4 )
{
/*
* queue is empty - return a NULL
*/
*result = NULL;
}
else
{
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, ERR_RXSTACK_INTERNAL_TMPL, rc, "Getting line from queue" );
else if ( !TSD->called_from_saa )
exiterror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, rc, "Getting line from queue" );
}
DROPSTRENG( header );
}
}
return rc;
}
int create_queue_on_rxstack( const tsd_t *TSD, const Queue *q, const streng *queue, streng **result )
{
int rc,length;
streng *header;
assert( q->type == QisExternal ) ;
rc = send_command_to_rxstack( TSD, q->u.e.socket, RXSTACK_CREATE_QUEUE_STR, (queue) ? PSTRENGVAL( queue ) : NULL, (queue) ? PSTRENGLEN( queue ) : 0 );
if ( rc != -1 )
{
header = read_result_from_rxstack( TSD, q->u.e.socket, RXSTACK_HEADER_SIZE );
if ( header )
{
rc = header->value[0]-'0';
if ( ( rc == 0 ) || ( rc == 1 ) )
{
/*
* now get the length from the header and get that many characters...
*/
length = get_length_from_header( TSD, header );
if ( ( *result = init_connect_string( TSD, q, length ) ) != NULL )
{
inject_result_from_rxstack( q->u.e.socket, *result, length ) ;
add_connect_string( q, *result );
}
else
rc = 4; /* RXQUEUE_NOEMEM */
}
else
{
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, ERR_RXSTACK_INTERNAL_TMPL, rc, "Creating queue" );
else if ( !TSD->called_from_saa )
exiterror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, rc, "Creating queue" );
switch ( rc )
{
case 2: rc = 5; break; /* RXQUEUE_BADQNAME */
case 3: rc = 4; break; /* RXQUEUE_NOEMEM */
case 6: rc = 1; break; /* RXQUEUE_STORAGE */
default:;
}
}
DROPSTRENG( header );
}
}
return rc;
}
int set_queue_in_rxstack( const tsd_t *TSD, int sock, const streng *queue_name )
{
int rc,length;
streng *header, *dummy;
rc = send_command_to_rxstack( TSD, sock, RXSTACK_SET_QUEUE_STR, PSTRENGVAL( queue_name ), PSTRENGLEN( queue_name ) );
if ( rc != -1 )
{
header = read_result_from_rxstack( TSD, sock, RXSTACK_HEADER_SIZE );
if ( header )
{
rc = header->value[0]-'0';
if ( rc == 0 )
{
/*
* now get the length from the header and get that many characters...
*/
length = get_length_from_header( TSD, header );
dummy = read_result_from_rxstack( TSD, sock, length );
/* dummy is no longer used */
DROPSTRENG( dummy ) ;
}
else
{
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, ERR_RXSTACK_INTERNAL_TMPL, rc, "Setting queue" );
else if ( !TSD->called_from_saa )
exiterror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, rc, "Setting queue" );
switch ( rc )
{
case 3: rc = 4; break; /* RXQUEUE_NOEMEM */
case 6: rc = 1; break; /* RXQUEUE_STORAGE */
default:;
}
}
DROPSTRENG( header );
}
}
else
rc = 100; /* RXQUEUE_NETERROR */
return rc;
}
int queue_line_fifo_to_rxstack( const tsd_t *TSD, int sock, const streng *line )
{
int rc;
streng *header;
rc = send_command_to_rxstack( TSD, sock, RXSTACK_QUEUE_FIFO_STR, PSTRENGVAL( line ), PSTRENGLEN( line ) );
if ( rc != -1 )
{
header = read_result_from_rxstack( TSD, sock, RXSTACK_HEADER_SIZE );
if ( header )
{
rc = header->value[0]-'0';
if ( rc != 0 )
{
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, ERR_RXSTACK_INTERNAL_TMPL, rc, "Queueing line" );
else if ( !TSD->called_from_saa )
exiterror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, rc, "Queueing line" );
switch ( rc )
{
case 2: rc = 5; break; /* RXQUEUE_BADQNAME */
case 3: rc = 4; break; /* RXQUEUE_NOEMEM */
case 6: rc = 1; break; /* RXQUEUE_STORAGE */
default:;
}
}
DROPSTRENG( header );
}
}
return rc;
}
int queue_line_lifo_to_rxstack( const tsd_t *TSD, int sock, const streng *line )
{
int rc;
streng *header;
rc = send_command_to_rxstack( TSD, sock, RXSTACK_QUEUE_LIFO_STR, PSTRENGVAL( line ), PSTRENGLEN( line ) );
if ( rc != -1 )
{
header = read_result_from_rxstack( TSD, sock, RXSTACK_HEADER_SIZE );
if ( header )
{
rc = header->value[0]-'0';
if ( rc != 0 )
{
/* TSD will be NULL when called from rxqueue or rxstack */
if ( TSD == NULL )
showerror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, ERR_RXSTACK_INTERNAL_TMPL, rc, "Queueing line" );
else if ( !TSD->called_from_saa )
exiterror( ERR_EXTERNAL_QUEUE, ERR_RXSTACK_INTERNAL, rc, "Queueing line" );
switch ( rc )
{
case 2: rc = 5; break; /* RXQUEUE_BADQNAME */
case 3: rc = 4; break; /* RXQUEUE_NOEMEM */
case 6: rc = 1; break; /* RXQUEUE_STORAGE */
default:;
}
}
DROPSTRENG( header );
}
}
return rc;
}
#endif
|