SLI3270.C
/*****************************************************************************/
/* SLI Sample Program */
/* */
/* (C) Copyright 1990 - 1993 Data Connection Ltd. */
/* */
/* This program is a crude 3270 emulator. It uses the SLI API to access the */
/* LU-LU session. Outbound data from the host is displayed on the screen */
/* unformatted. */
/* */
/* If the outbound data is an RQD request an automatic positive response */
/* is sent. Inbound data can be entered at the keyboard and is sent on */
/* the current session. */
/* */
/* The program is invoked with two parameters - the name of the LUA LU */
/* to use and a logon string. This is converted to upper case and must */
/* match an LUA LU in the configuration file. This LU should be configured */
/* for a 327? on the host. */
/* */
/* The program can only access hosts that use simple unformatted logon */
/* requests */
/* */
/* To exit the program type ] (right square bracket) */
/* */
/* The CSV CONVERT function is used to convert data between ASCII and */
/* EBCDIC. This uses the type G conversion table, so the environment */
/* variable COMTBLG must be set to point to a suitable file. */
/* */
/* Keys that work are: */
/* */
/* Alt-1 to Alt-9 are PF1 to PF9 */
/* F2 sends a CLEAR to the host */
/* backspace */
/* Letters, numbers and symbols */
/* ] terminates the program */
/* */
/*****************************************************************************/
#ifdef WIN32
#include <windows.h>
#else
#define INCL_DOS
#define INCL_DOSERRORS
#include <os2.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <conio.h>
#include <lua_c.h>
#include <acssvcc.h>
/*****************************************************************************/
/* Program constants */
/*****************************************************************************/
#define DATASIZE 4096 /* Max size of RU */
#define EXITKEY 0x5D /* ']' to exit program */
#define BETB 1 /* Between brackets */
#define SEND 2 /* In bracket and can send */
#define RECV 3 /* In bracket, but cannot send */
/*****************************************************************************/
/* State variables */
/* */
/* We can only have one read or write verb outstanding per flow. These */
/* state variables keep track of these verbs and what we need to do with */
/* them. */
/*****************************************************************************/
UINT write_state;
#define NO_WRITE 1
#define WRITE_OUTSTANDING 2 /* waiting for write to complete */
#define WRITE_QUEUED 3 /* have data to write */
UINT read_state;
#define NO_READ 1
#define READ_OUTSTANDING 2 /* read verb outstanding */
#define RSP_QUEUED 3 /* have a response to write */
#define RSP_OUTSTANDING 4 /* waiting for a response to complete */
UINT rpq_state;
#define NO_RPQ 1
#define RPQ_OUTSTANDING 2 /* waiting for an RPQ to complete */
#define RPQ_QUEUED 3 /* have RPQ to send */
/***************************************************************************/
/* Global variables */
/* */
/* Inbound data is prefixed with the <enter> key AID plus a two byte */
/* cursor address. */
/***************************************************************************/
LUA_VERB_RECORD recv_verb; /* SLI read verb */
LUA_VERB_RECORD other_verb; /* SLI init, write or term verb */
LUA_VERB_RECORD rpq_verb; /* SLI_WRITE for RPQs */
UCHAR rpq_data[] = {
0x88,
0x00, 0x0C, 0x81, 0x80, 0x80, 0x81, 0x85, 0x86, 0x87, 0x88, 0x95, 0xA6,
0x00, 0x17, 0x81, 0x81, 0x21, 0x00, 0x00, 0x50, 0x00, 0x18, 0x00, 0x00,
0x0A, 0x02, 0xE5, 0x00, 0x02, 0x00, 0x6F, 0x09, 0x10, 0x07, 0x80,
0x00, 0x14, 0x81, 0x85, 0x02, 0x00, 0x09, 0x0E, 0x00, 0x00, 0x00, 0x00,
0x07, 0x00, 0x00, 0x00, 0x02, 0xB9, 0x01, 0x1D,
0x00, 0x16, 0x81, 0x86, 0x00, 0x08, 0x00, 0xF4, 0xF1, 0x00, 0xF2, 0x00,
0xF3, 0x00, 0xF4, 0x00, 0xF5, 0x00, 0xF6, 0x00, 0xF7, 0x00,
0x00, 0x0D, 0x81, 0x87, 0x04, 0x00, 0xF0, 0xF1, 0x00, 0xF2, 0x00, 0xF4,
0x00,
0x00, 0x07, 0x81, 0x88, 0x00, 0x01, 0x02,
0x00, 0x0C, 0x81, 0x95, 0x00, 0x00, 0x7F, 0xFF, 0x7F, 0xFF, 0x01, 0x01,
0x00, 0x11, 0x81, 0xA6, 0x00, 0x00, 0x0B, 0x01, 0x00, 0x00, 0x50, 0x00,
0x18, 0x00, 0x50, 0x00, 0x18};
#define RPQ_LENGTH (sizeof(rpq_data))
unsigned char read_data[DATASIZE]; /* Outbound RU */
#define WRITE_EXTRA 6
unsigned char write_array[DATASIZE + WRITE_EXTRA] =
{0x7d, 0x40, 0x40, 0x11, 0x40, 0x40};
/* Inbound RU */
unsigned char *write_data = write_array + WRITE_EXTRA;
/* Pointer to inbound RU */
UINT data_offset = 0; /* offset into read_data */
UINT write_len = 0; /* length of write data */
struct convert convert_to_asc; /* Outbound convert verb */
struct convert convert_to_ebc; /* Inbound convert verb */
#ifdef WIN32
HANDLE write_event = 0l; /* write arm verb semaphore */
HANDLE read_event = 0l; /* read arm verb semaphore */
HANDLE init_event = 0l; /* SLI_OPEN semaphore */
HANDLE term_event = 0l; /* SLI_CLOSE semaphore */
HANDLE rpq_event = 0l;
HANDLE std_input; /* standard input handle */
HANDLE std_output; /* standard output handle */
#else
ULONG write_sema4 = 0l; /* write arm verb semaphore */
ULONG read_sema4 = 0l; /* read arm verb semaphore */
ULONG init_sema4 = 0l; /* SLI_OPEN semaphore */
ULONG term_sema4 = 0l; /* SLI_CLOSE semaphore */
ULONG rpq_sema4 = 0l;
#endif
BOOL terminating = FALSE; /* are we already in closedown() ? */
unsigned long sense = 0l; /* sense code */
unsigned char lu_name[9] = " "; /* LU name */
unsigned long sid; /* SLI session ID */
int send_state = BETB; /* LU session send state */
#define LOGON_MAX 25 /* maximum logon string length */
UCHAR logon_data[LOGON_MAX+1] = {0};
UCHAR logon_length = 0;
#ifdef WIN32
#define OPENPOST (ULONG) init_event
#define CLOSEPOST (ULONG) term_event
#define RECVPOST (ULONG) read_event
#define SENDPOST (ULONG) write_event
#define RPQPOST (ULONG) rpq_event
#else
#define OPENPOST (unsigned long) ((UCHAR FAR *) &init_sema4)
#define CLOSEPOST (unsigned long) ((UCHAR FAR *) &term_sema4)
#define RECVPOST (unsigned long) ((UCHAR FAR *) &read_sema4)
#define SENDPOST (unsigned long) ((UCHAR FAR *) &write_sema4)
#define RPQPOST (unsigned long) ((UCHAR FAR *) &rpq_sema4)
#endif
/*****************************************************************************/
/* Function declarations. */
/*****************************************************************************/
#ifdef WIN32
#define LOADDS
#else
#define LOADDS _loadds
#endif
void pascal far LOADDS SLI (LUA_VERB_RECORD FAR *);
#ifdef WIN32
void _CRTAPI1 main(int argc, char *argv[]);
#else
int main (int argc,char * *argv);
#endif
void csv_init (void);
int issue_verb (unsigned int type);
void issue_receive (void);
void other_done (LUA_VERB_RECORD *verb);
void recv_done (LUA_VERB_RECORD *verb);
void issue_rsp (unsigned long sense);
void rsp_done (LUA_VERB_RECORD *verb);
void closedown (void);
BOOL do_send (void);
void wait_verb_complete (LUA_VERB_RECORD *verb);
void set_semaphore (LUA_VERB_RECORD *verb);
BOOL do_keyboard_stuff (void);
BOOL check_verb_complete (LUA_VERB_RECORD *verb);
void parse_data (UCHAR FAR *, USHORT);
BOOL issue_rpq (void);
/**PROC+**********************************************************************/
/* Name: main */
/* */
/* Purpose: set up CSV convert verbs */
/* */
/* Returns: none */
/* */
/* Params: argv, argc */
/* */
/* Operation: Get LU name and logon string from command line */
/* do some initialisation */
/* Issue SLI_OPEN to get LU-LU session */
/* Loop reading data from keyboard and host, and send keyboard */
/* data to host */
/**PROC-**********************************************************************/
#ifdef WIN32
void _CRTAPI1 main(int argc, char *argv[])
#else
int main(argc, argv)
int argc;
char *argv[];
#endif
{
BOOL whole_data; /* we have a whole data string to write */
BOOL verb_complete; /* Has a verb completed */
BOOL write_ok; /* Has write worked? */
BOOL rpq_ok; /* Has rpq worked */
int ii;
#ifdef WIN32
HANDLE handle_list [6];
#endif
#ifdef DOS5
DEFINEMUXSEMLIST(sem_list,5)
USHORT sem_index;
#endif
printf("SLI simple 3270 application\n");
/***************************************************************************/
/* Validate parameter usage and get LU name. */
/***************************************************************************/
if (argc != 3)
{
printf("Usage: SLI3270 luname \"logon string\"\n");
exit(1);
}
if (strlen(argv[1]) > 8)
{
printf("LU name too long\n");
exit(1);
}
if (strlen(argv[2]) > LOGON_MAX)
{
printf("Logon string too long");
}
/***************************************************************************/
/* Convert to upper case */
/***************************************************************************/
ii=0;
while (argv[1][ii])
{
if (argv[1][ii] >= 'a' && argv[1][ii] <= 'z')
{
argv[1][ii] = argv[1][ii] - 'a' + 'A';
}
ii++;
}
memcpy(lu_name, argv[1], strlen(argv[1]));
printf("lu_name %s\n", lu_name);
/***************************************************************************/
/* Set up logon message */
/***************************************************************************/
strcpy (logon_data, argv[2]);
logon_length = strlen(logon_data);
convert_to_ebc.opcode = SV_CONVERT;
convert_to_ebc.direction = SV_ASCII_TO_EBCDIC;
convert_to_ebc.char_set = SV_G;
convert_to_ebc.source = logon_data;
convert_to_ebc.target = logon_data;
convert_to_ebc.len = (unsigned short) logon_length;
ACSSVC_C((LONG)((UCHAR FAR *)&convert_to_ebc));
/***************************************************************************/
/* Set up CSV convert verbs */
/***************************************************************************/
csv_init();
#ifdef WIN32
/***************************************************************************/
/* Create the necessary events */
/***************************************************************************/
write_event = CreateEvent (NULL, TRUE, FALSE, NULL);
read_event = CreateEvent (NULL, TRUE, FALSE, NULL);
init_event = CreateEvent (NULL, TRUE, FALSE, NULL);
term_event = CreateEvent (NULL, TRUE, FALSE, NULL);
rpq_event = CreateEvent (NULL, TRUE, FALSE, NULL);
/***************************************************************************/
/* Get standard input and output handles. */
/***************************************************************************/
std_input = GetStdHandle (STD_INPUT_HANDLE );
std_output = GetStdHandle (STD_OUTPUT_HANDLE);
if ((std_input == INVALID_HANDLE_VALUE) ||
(std_output == INVALID_HANDLE_VALUE))
{
printf("GetStdHandle Failed, %d", GetLastError());
exit (1);
}
/***************************************************************************/
/* Set up list of handles to wait for */
/***************************************************************************/
handle_list[0] = write_event;
handle_list[1] = read_event;
handle_list[2] = init_event;
handle_list[3] = term_event;
handle_list[4] = rpq_event;
handle_list[5] = std_input;
#endif
#ifdef DOS5
/***************************************************************************/
/* Set semaphores to begin with */
/***************************************************************************/
DosSemSet (&init_sema4);
DosSemSet (&term_sema4);
DosSemSet (&read_sema4);
DosSemSet (&write_sema4);
DosSemSet (&rpq_sema4);
sem_list.amxs[0].hsem = &init_sema4;
sem_list.amxs[1].hsem = &term_sema4;
sem_list.amxs[2].hsem = &read_sema4;
sem_list.amxs[3].hsem = &write_sema4;
sem_list.amxs[4].hsem = &rpq_sema4;
#endif
/***************************************************************************/
/* Initialize SLI (get LU-LU session) */
/***************************************************************************/
if (issue_verb((unsigned int) LUA_OPCODE_SLI_OPEN))
{
printf("OPEN failed\n");
exit(1);
}
/***************************************************************************/
/* Set initial states */
/***************************************************************************/
write_state = NO_WRITE;
read_state = NO_READ;
rpq_state = NO_RPQ;
/***************************************************************************/
/* Loop reading inbound data from the keyboard */
/***************************************************************************/
while (!terminating)
{
/*************************************************************************/
/* Determine if we can pause */
/*************************************************************************/
if ( (read_state != NO_READ) &&
((write_state != WRITE_QUEUED) ||
(rpq_state != NO_RPQ) ||
(read_state == RSP_OUTSTANDING) ||
(read_state == RSP_QUEUED)) &&
((rpq_state != RPQ_QUEUED) ||
(write_state == WRITE_OUTSTANDING) ||
(read_state == RSP_OUTSTANDING) ||
(read_state == RSP_QUEUED)) &&
((read_state != RSP_QUEUED) ||
(write_state == WRITE_OUTSTANDING)))
{
#ifdef WIN32
WaitForMultipleObjects (6, handle_list, FALSE, INFINITE);
#else
if (!kbhit())
{
DosMuxSemWait (&sem_index, &sem_list, 200l);
}
#endif
}
/*************************************************************************/
/* First check on the state of write verbs */
/*************************************************************************/
if ((write_state == NO_WRITE) &&
(rpq_state == NO_RPQ) &&
(read_state != RSP_QUEUED) &&
(read_state != RSP_OUTSTANDING))
{
/***********************************************************************/
/* Don't write here if we need to respond, since we can only have one */
/* write outstanding on each flow. */
/* Here we want to check if we have a whole string of data (i.e. that */
/* the user has hit enter). If so write the data to the HOST */
/***********************************************************************/
whole_data = do_keyboard_stuff ();
if (whole_data)
{
/*********************************************************************/
/* Attempt to write the data. May not work because of bracket state */
/*********************************************************************/
write_ok = do_send ();
if (write_ok)
{
/*******************************************************************/
/* If verb completes async change state to indicate this o.w. */
/* call the verb done processor */
/*******************************************************************/
if (other_verb.common.lua_flag2.async)
{
write_state = WRITE_OUTSTANDING;
}
else
{
other_done (&other_verb);
write_state = NO_WRITE;
}
}
else
{
/*******************************************************************/
/* Failed to do a write. Queue up data */
/*******************************************************************/
write_state = WRITE_QUEUED;
}
}
}
else if ((write_state == WRITE_QUEUED) &&
(rpq_state == NO_RPQ) &&
(read_state != RSP_OUTSTANDING) &&
(read_state != RSP_QUEUED))
{
/***********************************************************************/
/* Attempt to write the data. May not work because of bracket state */
/***********************************************************************/
write_ok = do_send ();
if (write_ok)
{
/*********************************************************************/
/* If verb completes async change state to indicate this o.w. call */
/* the verb done processor */
/*********************************************************************/
if (other_verb.common.lua_flag2.async)
{
write_state = WRITE_OUTSTANDING;
}
else
{
other_done (&other_verb);
write_state = NO_WRITE;
}
}
}
else if (write_state == WRITE_OUTSTANDING)
{
/***********************************************************************/
/* We have a SLI_WRITE outstanding so check if it is complete */
/***********************************************************************/
verb_complete = check_verb_complete (&other_verb);
if (verb_complete)
{
other_done (&other_verb);
write_state = NO_WRITE;
}
}
/*************************************************************************/
/* Now check the RPQ state */
/*************************************************************************/
if ((rpq_state == RPQ_QUEUED) &&
(write_state != WRITE_OUTSTANDING) &&
(read_state != RSP_OUTSTANDING) &&
(read_state != RSP_QUEUED))
{
/***********************************************************************/
/* We have an RPQ queued up. Try to send it */
/***********************************************************************/
rpq_ok = issue_rpq ();
if (rpq_ok)
{
/*********************************************************************/
/* If verb completes async change state to indicate this o.w. call */
/* the verb done processor */
/*********************************************************************/
if (rpq_verb.common.lua_flag2.async)
{
rpq_state = WRITE_OUTSTANDING;
}
else
{
other_done (&rpq_verb);
write_state = NO_RPQ;
}
}
}
else if (rpq_state == RPQ_OUTSTANDING)
{
/***********************************************************************/
/* Check for verb completion */
/***********************************************************************/
verb_complete = check_verb_complete (&rpq_verb);
if (verb_complete)
{
other_done (&rpq_verb);
rpq_state = NO_RPQ;
}
}
/*************************************************************************/
/* Now check on read verbs */
/*************************************************************************/
if (read_state == NO_READ)
{
issue_receive ();
if (recv_verb.common.lua_flag2.async)
{
read_state = READ_OUTSTANDING;
}
else
{
/*********************************************************************/
/* recv_done will change read_state to RESPONSE_QUEUED or NO_READ */
/*********************************************************************/
recv_done (&recv_verb);
}
}
else if (read_state == READ_OUTSTANDING)
{
verb_complete = check_verb_complete (&recv_verb);
if (verb_complete)
{
/*********************************************************************/
/* recv_done will change read_state to RESPONSE_QUEUED or NO_READ */
/*********************************************************************/
recv_done (&recv_verb);
}
}
else if (read_state == RSP_QUEUED)
{
/***********************************************************************/
/* We need to respond to a message read. Do a write if one is */
/* availible. */
/***********************************************************************/
if (write_state != WRITE_OUTSTANDING)
{
/*********************************************************************/
/* The response is issued using the recv_verb */
/*********************************************************************/
issue_rsp (sense);
if (recv_verb.common.lua_flag2.async)
{
read_state = RSP_OUTSTANDING;
}
else
{
rsp_done (&recv_verb);
read_state = NO_READ;
}
}
}
else if (read_state == RSP_OUTSTANDING)
{
/***********************************************************************/
/* Check to see if the response is complete */
/***********************************************************************/
verb_complete = check_verb_complete (&recv_verb);
if (verb_complete)
{
rsp_done (&recv_verb);
read_state = NO_READ;
}
}
else
{
/***********************************************************************/
/* Invalid state */
/***********************************************************************/
printf("invalid state");
}
} /* while not terminating */
} /* main () */
/**PROC+**********************************************************************/
/* Name: csv_init */
/* */
/* Purpose: set up CSV convert verbs */
/* */
/* Returns: void */
/* */
/* Params: none */
/* */
/* Operation: sets uup two CSV convert verbs, one in each direction. Only */
/* the length needs to be set when the verb is called */
/**PROC-**********************************************************************/
void csv_init (void)
{
convert_to_asc.opcode = SV_CONVERT;
convert_to_asc.direction = SV_EBCDIC_TO_ASCII;
convert_to_asc.char_set = SV_G;
convert_to_asc.source = read_data;
convert_to_asc.target = read_data;
convert_to_ebc.opcode = SV_CONVERT;
convert_to_ebc.direction = SV_ASCII_TO_EBCDIC;
convert_to_ebc.char_set = SV_G;
convert_to_ebc.source = write_data;
convert_to_ebc.target = write_data;
} /* csv_init */
/**PROC+**********************************************************************/
/* Name: issue_verb */
/* */
/* Purpose: build a verb and send it */
/* */
/* Returns: int - non-zero => verb failed */
/* */
/* Params: IN type - type of verb to issue */
/* */
/* Operation: Build an OPEN or CLOSE verb and issue it. Wait for the verb */
/* to complete */
/**PROC-**********************************************************************/
int issue_verb(type)
unsigned int type;
{
memset(&other_verb, 0, sizeof(other_verb));
other_verb.common.lua_verb = LUA_VERB_SLI;
other_verb.common.lua_opcode = type;
if (type == LUA_OPCODE_SLI_OPEN)
{
other_verb.common.lua_verb_length = sizeof(struct LUA_COMMON)+
sizeof(other_verb.specific.open.lua_init_type) +
sizeof(other_verb.specific.open.lua_resv65) +
sizeof(other_verb.specific.open.lua_wait) +
sizeof(other_verb.specific.open.lua_ending_delim);
memcpy(other_verb.common.lua_luname, lu_name, 8);
other_verb.common.lua_post_handle = OPENPOST;
other_verb.specific.open.lua_init_type = LUA_INIT_TYPE_SEC_LOG;
other_verb.common.lua_data_length = logon_length;
other_verb.common.lua_data_ptr = logon_data;
other_verb.specific.open.lua_open_extension[0].lua_routine_type =
LUA_ROUTINE_TYPE_END;
}
else
{
other_verb.common.lua_verb_length = sizeof(struct LUA_COMMON);
other_verb.common.lua_sid = sid;
other_verb.common.lua_post_handle = CLOSEPOST;
}
SLI((LUA_VERB_RECORD FAR *) &other_verb);
if (other_verb.common.lua_flag2.async)
{
wait_verb_complete (&other_verb);
}
other_done(&other_verb);
return(other_verb.common.lua_prim_rc != LUA_OK);
} /* issue_verb */
/**PROC+**********************************************************************/
/* Name: issue_receive */
/* */
/* Purpose: build a recv verb and send it */
/* */
/* Returns: void */
/* */
/* Params: none */
/* */
/* Operation: Build a read verb for all flows and issue it */
/**PROC-**********************************************************************/
void issue_receive (void)
{
memset(&recv_verb, 0, sizeof(recv_verb));
memset(read_data, 0, DATASIZE);
recv_verb.common.lua_verb = LUA_VERB_SLI;
recv_verb.common.lua_verb_length = sizeof(struct LUA_COMMON);
recv_verb.common.lua_opcode = LUA_OPCODE_SLI_RECEIVE;
recv_verb.common.lua_sid = sid;
recv_verb.common.lua_max_length = DATASIZE;
recv_verb.common.lua_data_ptr = (char *) read_data;
recv_verb.common.lua_post_handle = RECVPOST;
recv_verb.common.lua_flag1.lu_norm = 1;
recv_verb.common.lua_flag1.lu_exp = 1;
recv_verb.common.lua_flag1.sscp_norm = 1;
recv_verb.common.lua_flag1.sscp_exp = 1;
SLI((LUA_VERB_RECORD FAR *)&recv_verb);
} /* issue_receive */
/**PROC+**********************************************************************/
/* Name: other_done */
/* */
/* Purpose: handle completed open, send or close verb */
/* */
/* Returns: void */
/* */
/* Params: IN verb - completed verb */
/* */
/* Operation: write status to he screen */
/**PROC-**********************************************************************/
void other_done(verb)
LUA_VERB_RECORD *verb;
{
switch (verb->common.lua_opcode)
{
case LUA_OPCODE_SLI_OPEN:
if (verb->common.lua_prim_rc == LUA_OK)
{
printf("session active\n");
sid = verb->common.lua_sid;
}
else
{
printf("OPEN failed, (%4.4x, %8.8lx)\n",
verb->common.lua_prim_rc, verb->common.lua_sec_rc);
}
break;
case LUA_OPCODE_SLI_SEND:
if (verb->common.lua_prim_rc != LUA_OK)
{
printf("SEND failed, (%4.4x, %8.8lx)\n",
verb->common.lua_prim_rc, verb->common.lua_sec_rc);
}
break;
case LUA_OPCODE_SLI_CLOSE:
printf("Terminated\n");
break;
}
} /* other_done */
/**PROC+**********************************************************************/
/* Name: recv_done */
/* */
/* Purpose: handle completed receive verb */
/* */
/* Returns: void */
/* */
/* Params: IN verb - completed read verb */
/* */
/* Operation: If the completed verb contains data, first parse it and then */
/* display it. */
/* If message is a BIND or an UNBIND, set the LU-LU session state */
/* accordingly */
/* Also check for EB, CD and change session state flags */
/**PROC-**********************************************************************/
void recv_done(verb)
LUA_VERB_RECORD *verb;
{
int count; /* number of bytes of data left to display */
unsigned char *data; /* pointer to next data to display */
BOOL rsp_required = FALSE; /* is a resonse required */
sense = 0l;
if (verb->common.lua_prim_rc == LUA_OK)
{
if (verb->common.lua_message_type == LUA_MESSAGE_TYPE_LU_DATA)
{
if (verb->common.lua_data_length > 0)
{
/*********************************************************************/
/* We now have to parse the data. For the moment we only look for */
/* RPQ requests. */
/*********************************************************************/
parse_data (read_data, (USHORT) (verb->common.lua_data_length));
/*********************************************************************/
/* Display outbound data. */
/*********************************************************************/
convert_to_asc.len = (unsigned short) verb->common.lua_data_length;
ACSSVC_C((LONG)((UCHAR FAR *)&convert_to_asc));
data = read_data;
count = strlen(data);
while (count > 0)
{
if (count <= 80)
{
printf("%s\n",data);
count = 0;
}
else
{
printf("%80.80s\n",data);
count -= 80;
data += 80;
}
}
}
/***********************************************************************/
/* Set session state. */
/***********************************************************************/
if (verb->common.lua_rh.ebi)
{
printf("EB\n");
send_state = BETB;
}
else if (verb->common.lua_rh.cdi)
{
printf("CD\n");
send_state = SEND;
}
else
{
send_state = RECV;
}
}
/*************************************************************************/
/* Respond to any RQD request. */
/*************************************************************************/
if ((verb->common.lua_message_type != LUA_MESSAGE_TYPE_RSP) &&
(verb->common.lua_rh.ri == 0)) /* definite response */
{
rsp_required = TRUE;
}
}
else /* primary rc not OK - read failed - stop now */
{
printf("RECEIVE ERROR, primary rc = %4.4x, secondary rc = %8.8lx\n",
verb->common.lua_prim_rc, verb->common.lua_sec_rc);
closedown();
}
/***************************************************************************/
/* Continue processing with either another recv or a send positive rsp. */
/* (The callback from issuing response will then issue another recv) If */
/* we've already gone into closedown, stop here */
/***************************************************************************/
if (!terminating)
{
if (rsp_required)
{
read_state = RSP_QUEUED;
}
else
{
read_state = NO_READ;
}
}
} /* recv_done */
/**PROC+**********************************************************************/
/* Name: issue_rsp */
/* */
/* Purpose: issue a response for a request from the host */
/* */
/* Returns: void */
/* */
/* Params: IN sense - sense code for the response */
/* */
/* Operation: Build a response and write it out. Uses the recv verb control */
/* block because it has the necessary information. */
/* */
/**PROC-**********************************************************************/
void issue_rsp(sense)
unsigned long sense;
{
recv_verb.common.lua_opcode = LUA_OPCODE_SLI_SEND;
recv_verb.common.lua_max_length = 0;
recv_verb.common.lua_post_handle = (ULONG) RECVPOST;
recv_verb.common.lua_message_type = LUA_MESSAGE_TYPE_RSP;
recv_verb.common.lua_verb_length = sizeof(struct LUA_COMMON) +
sizeof(recv_verb.specific.lua_sequence_number);
recv_verb.common.lua_rh.rri = 1; /* response */
recv_verb.common.lua_flag1.lu_norm = 0;
recv_verb.common.lua_flag1.lu_exp = 0;
recv_verb.common.lua_flag1.sscp_norm = 0;
recv_verb.common.lua_flag1.sscp_exp = 0;
/***************************************************************************/
/* If we have been given a sense code this must be a negative response */
/***************************************************************************/
if (sense)
{
recv_verb.common.lua_data_length = 4;
memcpy(read_data, &sense, 4);
recv_verb.common.lua_rh.ri = 1; /* negative rsp */
}
else
{
recv_verb.common.lua_data_length = 0;
recv_verb.common.lua_rh.ri = 0; /* positive rsp */
}
/***************************************************************************/
/* Send the response back on the flow from which the request came */
/***************************************************************************/
if (recv_verb.common.lua_flag2.lu_norm)
{
recv_verb.common.lua_flag1.lu_norm = 1;
}
else if (recv_verb.common.lua_flag2.lu_exp)
{
recv_verb.common.lua_flag1.lu_exp = 1;
}
else if (recv_verb.common.lua_flag2.sscp_norm)
{
recv_verb.common.lua_flag1.sscp_norm = 1;
}
else if (recv_verb.common.lua_flag2.sscp_exp)
{
recv_verb.common.lua_flag1.sscp_exp = 1;
}
/***************************************************************************/
/* Send out the verb */
/***************************************************************************/
SLI((LUA_VERB_RECORD FAR *)&recv_verb); /* write the response */
} /* issue_rsp */
/**PROC+**********************************************************************/
/* Name: rsp_done */
/* */
/* Purpose: handle completion of SLI_SEND, when SLI_SEND has written a */
/* response */
/* */
/* Returns: void */
/* */
/* Params: IN verb - completed verb */
/* */
/* Operation: If verb did not complete OK print a message and terminate */
/* */
/**PROC-**********************************************************************/
void rsp_done (verb)
LUA_VERB_RECORD *verb;
{
if (verb->common.lua_prim_rc != LUA_OK) /* failed to write the response */
{ /* so stop here */
printf("SEND for response failed, (%4.4x, %8.8lx)\n",
verb->common.lua_prim_rc, verb->common.lua_sec_rc);
closedown();
}
} /* rsp_done */
/**PROC+**********************************************************************/
/* Name: closedown */
/* */
/* Purpose: terminate the application cleanly */
/* */
/* Returns: void */
/* */
/* Params: none */
/* */
/* Operation: Issue an SLI_CLOSE and wait for it to complete. Then exit */
/* */
/**PROC-**********************************************************************/
void closedown (void)
{
if (!terminating) /* check we haven't already got here from */
{ /* another section of the code */
terminating = TRUE; /* then make sure we can't get here again */
printf("Closedown\n");
if (issue_verb((unsigned int) LUA_OPCODE_SLI_CLOSE))
{
exit(1);
}
exit(0);
}
} /* closedown */
/**PROC+**********************************************************************/
/* Name: check_verb_complete */
/* */
/* Purpose: check for asynchronous verb completion */
/* */
/* Returns: BOOL - TRUE => verb has completed */
/* */
/* Params: IN - verb - pointer to verb control block */
/* */
/* Operation: OS specific */
/* */
/**PROC-**********************************************************************/
BOOL check_verb_complete (verb)
LUA_VERB_RECORD * verb;
{
#ifdef DOS5
/***************************************************************************/
/* OS/2 case. The verb is complete when the semaphore is cleared */
/***************************************************************************/
USHORT RetCode; /* Holds return code from OS calls */
BOOL verb_complete; /* Has the verb completed */
verb_complete = FALSE;
RetCode = DosSemRequest ((HSEM)verb->common.lua_post_handle, 0l);
if (RetCode != NO_ERROR)
{
if (RetCode != ERROR_SEM_TIMEOUT)
{
/***********************************************************************/
/* If we get here we've got problems */
/***********************************************************************/
printf("Bad DosSemRequest return code, %d", RetCode);
}
}
else
{
verb_complete = TRUE;
set_semaphore (verb);
}
return(verb_complete);
#endif
#ifdef PDOS
/***************************************************************************/
/* DOS case. The verb is complete when the lua_post_handle is cleared */
/***************************************************************************/
BOOL verb_complete; /* Has the verb completed */
verb_complete = FALSE;
if (!verb->common.lua_post_handle)
{
verb_complete = TRUE;
set_semaphore (verb);
}
return(verb_complete);
#endif
#ifdef WIN32
/***************************************************************************/
/* Win32 case. The verb is complete when the semaphore is cleared */
/***************************************************************************/
DWORD RetCode;
RetCode = WaitForSingleObject((HANDLE) verb->common.lua_post_handle, 0l);
if (RetCode == 0)
{
set_semaphore (verb);
}
return((RetCode == 0));
#endif
} /* check_verb_complete */
/**PROC+**********************************************************************/
/* Name: wait_verb_complete */
/* */
/* Purpose: waits for async verb completion */
/* */
/* Returns: void */
/* */
/* Params: IN - verb - pointer to verb control block */
/* */
/* Operation: Wait for the lua_post_handle to become clear */
/* */
/**PROC-**********************************************************************/
void wait_verb_complete (verb)
LUA_VERB_RECORD * verb ;
{
#ifdef DOS5
USHORT RetCode; /* Holds return code from OS calls */
RetCode = DosSemRequest ((HSEM)verb->common.lua_post_handle, -1l);
#endif
#ifdef WIN32
DWORD RetCode;
RetCode = WaitForSingleObject((HANDLE)verb->common.lua_post_handle,
(DWORD)-1l);
#endif
set_semaphore (verb);
} /* wait_verb_complete */
/**PROC+**********************************************************************/
/* Name: set_semaphore */
/* */
/* Purpose: sets verb completion flags */
/* */
/* Returns: void */
/* */
/* Params: IN - verb - pointer to vcb */
/* */
/* Operation: set the lua_post_handle to the non-signaled state */
/* */
/**PROC-**********************************************************************/
void set_semaphore (verb)
LUA_VERB_RECORD * verb;
{
#ifdef DOS5
USHORT RetCode;
RetCode = DosSemSet ((HSEM)verb->common.lua_post_handle);
#endif
#ifdef WIN32
/*W32***********************************************************************/
/*W32* Win 32 case. Clear the event */
/*W32***********************************************************************/
ResetEvent ((HANDLE) verb->common.lua_post_handle);
#endif
} /* set_semaphore */
/**PROC+**********************************************************************/
/* Name: do_keyboard_stuff */
/* */
/* Purpose: poll keyboard for data */
/* */
/* Returns: BOOL - TRUE => we have data to send */
/* */
/* Params: none */
/* */
/* Operation: poll keyboard */
/* if some data */
/* read it in */
/* add it to data buffer */
/* if data is <enter> */
/* return TRUE */
/* endif */
/* endif */
/* return false */
/* */
/* Also keep track of which session is being used, and if user wishes to */
/* exit. */
/* */
/**PROC-**********************************************************************/
BOOL do_keyboard_stuff (void)
{
BOOL data_to_send; /* do we have data to send? */
INT input_char; /* an input character */
#ifdef WIN32
INPUT_RECORD input_record; /* input record */
DWORD no_read; /* number of input records read */
#endif
data_to_send = FALSE;
/***************************************************************************/
/* Check if keyboard has been hit */
/***************************************************************************/
#ifdef WIN32
while ((!data_to_send) &&
(!terminating) &&
(PeekConsoleInput (std_input, &input_record, 1, &no_read)) &&
(no_read > 0))
#else
while ((!data_to_send) && (!terminating) && (kbhit()))
#endif
{
#ifndef WIN32
input_char = getche ();
if ((input_char == 0) || (input_char == 0xE0))
#else
ReadConsoleInput (std_input, &input_record, 1, &no_read);
if ((input_record.EventType == KEY_EVENT) &&
(input_record.Event.KeyEvent.bKeyDown) &&
((input_record.Event.KeyEvent.dwControlKeyState == LEFT_ALT_PRESSED) ||
((input_record.Event.KeyEvent.wVirtualKeyCode >= VK_F1 ) &&
(input_record.Event.KeyEvent.wVirtualKeyCode <= VK_F24))))
#endif
{
/***********************************************************************/
/* Not an ascii char */
/***********************************************************************/
#ifndef WIN32
input_char = getch ();
#endif
/***********************************************************************/
/* Check for function keys and ALT-?? */
/***********************************************************************/
#ifndef WIN32
if (input_char == 60) /* F2 */
#else
if (input_record.Event.KeyEvent.wVirtualKeyCode == VK_F2)
#endif
{
/*********************************************************************/
/* Send a Clear. */
/*********************************************************************/
printf("sending clear\n");
*write_data = 0x6d;
write_len = 1;
data_to_send = TRUE;
}
#ifndef WIN32
else if ((input_char >= 120) && (input_char <= 129))
#else
else if ((input_record.Event.KeyEvent.wVirtualKeyCode >= '0') &&
(input_record.Event.KeyEvent.wVirtualKeyCode <= '9'))
#endif
{
/*********************************************************************/
/* ALT-1 to ALT-0 */
/* 0xF1 is the AID code for PF1 */
/* Follow this with the cursor address */
/*********************************************************************/
#ifndef WIN32
*write_data = 0xF1 + input_char - 120;
#else
*write_data = 0xF0 + input_record.Event.KeyEvent.wVirtualKeyCode - '0';
#endif
*(write_data + 1) = 0x40;
*(write_data + 2) = 0x40;
write_len = 3;
data_to_send = TRUE;
}
}
else
#ifdef WIN32
if ((input_record.EventType == KEY_EVENT ) &&
(input_record.Event.KeyEvent.bKeyDown))
#endif
{
/***********************************************************************/
/* An ASCII char */
/***********************************************************************/
#ifdef WIN32
input_char = input_record.Event.KeyEvent.uChar.AsciiChar;
#endif
if (input_char == EXITKEY)
{
closedown();
}
else
{
/*********************************************************************/
/* Key should be real data. Add it to the string */
/* For Windows NT echo the character to the screen */
/*********************************************************************/
if (input_char == 13)
{
#ifdef WIN32
WriteConsole (std_output, &input_char, 1, &no_read, NULL);
#endif
/*******************************************************************/
/* If user pressed return key then send the data. Reset */
/* data_offset for next data. */
/*******************************************************************/
write_data[data_offset++] = '\0';
data_to_send = TRUE;
data_offset = 0;
/*******************************************************************/
/* Convert data to EBCDIC */
/*******************************************************************/
convert_to_ebc.len = (unsigned short) (strlen(write_data) );
if (convert_to_ebc.len > 0)
{
ACSSVC_C((LONG)((UCHAR FAR *)&convert_to_ebc));
}
write_len = convert_to_ebc.len;
/*******************************************************************/
/* Allow for ENTER AID if necessary */
/*******************************************************************/
write_data -= WRITE_EXTRA;
write_len += WRITE_EXTRA;
}
else if (input_char == 8)
{
#ifdef WIN32
WriteConsole (std_output, &input_char, 1, &no_read, NULL);
#endif
/*******************************************************************/
/* Backspace. Delete last char */
/*******************************************************************/
if (data_offset > 0)
{
data_offset--;
}
}
else if (input_char != 0)
{
#ifdef WIN32
WriteConsole (std_output, &input_char, 1, &no_read, NULL);
#endif
write_data[data_offset++] = (UCHAR) input_char;
}
}
}
} /* if (kbhit()) */
return(data_to_send);
} /* do_keyboard_stuff */
/**PROC+**********************************************************************/
/* Name: do_send */
/* */
/* Purpose: issue a write verb */
/* */
/* Returns: BOOL - TRUE => data sent OK */
/* */
/* Params: none */
/* */
/* Operation: convert data to EBCDIC and send it on the right session */
/* */
/**PROC-**********************************************************************/
BOOL do_send (void)
{
BOOL ok;
ok = TRUE;
/***************************************************************************/
/* Set up the vcb */
/***************************************************************************/
memset(&other_verb, 0, sizeof(other_verb));
other_verb.common.lua_verb = LUA_VERB_SLI;
other_verb.common.lua_verb_length = sizeof(struct LUA_COMMON) +
sizeof(other_verb.specific.lua_sequence_number);
other_verb.common.lua_opcode = LUA_OPCODE_SLI_SEND;
other_verb.common.lua_sid = sid;
other_verb.common.lua_message_type = LUA_MESSAGE_TYPE_LU_DATA;
other_verb.common.lua_data_length = write_len;
other_verb.common.lua_data_ptr = (char far *) write_data;
other_verb.common.lua_post_handle = SENDPOST;
other_verb.common.lua_rh.dr1i = 1;
/***************************************************************************/
/* On the LU session we must add the <enter> key prefix. All inbound */
/* requests flow RQE with the BBI and CDI flags set depending on the */
/* current session state. */
/***************************************************************************/
other_verb.common.lua_rh.ri = 1;
if (send_state == BETB)
{
/*************************************************************************/
/* Between bracket, so open bracket and give direction. Note that we */
/* can do this since we will always be contention winner. */
/*************************************************************************/
other_verb.common.lua_rh.bbi = 1;
other_verb.common.lua_rh.cdi = 1;
send_state = RECV;
}
else if (send_state = SEND)
{
/*************************************************************************/
/* In bracket and we have direction, so simply give direction. */
/*************************************************************************/
other_verb.common.lua_rh.cdi = 1;
send_state = RECV;
}
else
{
/*************************************************************************/
/* In bracket and we do not have direction, so do not send. */
/*************************************************************************/
printf("Wait\n");
ok = FALSE;
}
if (ok)
{
/*************************************************************************/
/* Issue write verb */
/*************************************************************************/
SLI((LUA_VERB_RECORD FAR *) &other_verb);
/*************************************************************************/
/* Reset write_data to point to correct point in write_array */
/*************************************************************************/
write_data = write_array + WRITE_EXTRA;
}
return(ok);
} /* do_send () */
/**PROC+**********************************************************************/
/* Name: parse_data */
/* */
/* Purpose: parse data from the host */
/* */
/* Returns: void */
/* */
/* Params: IN data - pointer to data */
/* */
/* Operation: Looks through data for read partition query from host. Could */
/* be expanded to format data from host */
/* */
/**PROC-**********************************************************************/
void parse_data (data, length)
UCHAR FAR * data;
USHORT length;
{
USHORT field_length;
switch (*(data++))
{
case 0xF3: /* write structured field */
/***********************************************************************/
/* Next byte is the WCC - ignore */
/***********************************************************************/
data++;
length -= 2;
while (length > 0)
{
/*********************************************************************/
/* We're just looking for a Read Partion query */
/*********************************************************************/
field_length = (((USHORT) *data) << 8) || ((USHORT) *(data + 1));
if ((*(data+2) == 0x01) && /* Read partition */
(*(data+3) == 0xFF) && /* Query */
(*(data+4) == 0x02)) /* not a list */
{
/*******************************************************************/
/* Build an RPQ and flag it to be sent */
/*******************************************************************/
rpq_state = RPQ_QUEUED;
}
data += field_length;
length -= field_length;
}
break;
default:
break;
}
} /* parse_data */
/**PROC+**********************************************************************/
/* Name: issue_rpq */
/* */
/* Purpose: issue a response to a Read partition query */
/* */
/* Returns: BOOL - TRUE => sent OK */
/* */
/* Params: none */
/* */
/* Operation: Builds and sends an RPQ reesponse */
/* */
/**PROC-**********************************************************************/
BOOL issue_rpq (void)
{
BOOL issue_rpq;
issue_rpq = TRUE;
/***************************************************************************/
/* Set up the vcb */
/***************************************************************************/
memset(&rpq_verb, 0, sizeof(rpq_verb));
rpq_verb.common.lua_verb = LUA_VERB_SLI;
rpq_verb.common.lua_verb_length = sizeof(struct LUA_COMMON) +
sizeof(rpq_verb.specific.lua_sequence_number);
rpq_verb.common.lua_opcode = LUA_OPCODE_SLI_SEND;
rpq_verb.common.lua_sid = sid;
rpq_verb.common.lua_message_type = LUA_MESSAGE_TYPE_LU_DATA;
rpq_verb.common.lua_data_length = RPQ_LENGTH;
rpq_verb.common.lua_data_ptr = (char far *) rpq_data;
rpq_verb.common.lua_post_handle = RPQPOST;
rpq_verb.common.lua_rh.dr1i = 1;
/***************************************************************************/
/* On the LU session we must add the <enter> key prefix. All inbound */
/* requests flow RQE with the BBI and CDI flags set depending on the */
/* current session state. */
/***************************************************************************/
rpq_verb.common.lua_flag1.lu_norm = 0;
rpq_verb.common.lua_rh.ri = 1;
if (send_state == BETB)
{
/*************************************************************************/
/* Between bracket, so open bracket and give direction. Note that we */
/* can do this since we will always be contention winner. */
/*************************************************************************/
rpq_verb.common.lua_rh.bbi = 1;
rpq_verb.common.lua_rh.cdi = 1;
send_state = RECV;
}
else if (send_state = SEND)
{
/*************************************************************************/
/* In bracket and we have direction, so simply give direction. */
/*************************************************************************/
rpq_verb.common.lua_rh.cdi = 1;
send_state = RECV;
}
else
{
/*************************************************************************/
/* In bracket and we do not have direction, so do not send. */
/*************************************************************************/
printf("Wait\n");
issue_rpq = FALSE;
}
if (issue_rpq)
{
SLI((LUA_VERB_RECORD FAR *) &rpq_verb);
}
return(issue_rpq);
} /* issue_rpq */