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Annotation of 43BSDTahoe/ucb/tn3270/api/apilib.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that this notice is preserved and that due credit is given
        !             7:  * to the University of California at Berkeley. The name of the University
        !             8:  * may not be used to endorse or promote products derived from this
        !             9:  * software without specific prior written permission. This software
        !            10:  * is provided ``as is'' without express or implied warranty.
        !            11:  */
        !            12: 
        !            13: #ifndef lint
        !            14: static char sccsid[] = "@(#)apilib.c   3.2 (Berkeley) 3/28/88";
        !            15: #endif /* not lint */
        !            16: 
        !            17: #include "../ctlr/api.h"
        !            18: 
        !            19: #include "apilib.h"
        !            20: 
        !            21: int
        !            22:     api_sup_errno = 0,                 /* Supervisor error number */
        !            23:     api_sup_fcn_id = 0,                        /* Supervisor function id (0x12) */
        !            24:     api_fcn_errno = 0,                 /* Function error number */
        !            25:     api_fcn_fcn_id = 0;                        /* Function ID (0x6b, etc.) */
        !            26: 
        !            27: static int
        !            28:     gate_sessmgr = 0,
        !            29:     gate_keyboard = 0,
        !            30:     gate_copy = 0,
        !            31:     gate_oiam = 0;
        !            32: 
        !            33: /*
        !            34:  * Issue an API request, with reg structures supplied by the caller.
        !            35:  *
        !            36:  * Only certain routines need this (supervisor services come to mind).
        !            37:  */
        !            38: 
        !            39: static int
        !            40: api_issue_regs(ah, al, bh, bl, cx, dx, parms, length, regs, sregs)
        !            41: int            ah, al, bh, bl, cx, dx;
        !            42: char           *parms;
        !            43: int            length;
        !            44: union REGS     *regs;
        !            45: struct SREGS   *sregs;
        !            46: {
        !            47:     char far *ourseg = parms;
        !            48: 
        !            49:     regs->h.ah = ah;
        !            50:     regs->h.al = al;
        !            51:     regs->h.bh = bh;
        !            52:     regs->h.bl = bl;
        !            53:     regs->x.cx = cx;
        !            54:     regs->x.dx = dx;
        !            55:     sregs->es = (int) FP_SEG(ourseg);
        !            56:     regs->x.di = (int) FP_OFF(ourseg);
        !            57: 
        !            58: #if    defined(MSDOS)
        !            59:     int86x(API_INTERRUPT_NUMBER, regs, regs, sregs);
        !            60: #endif /* defined(MSDOS) */
        !            61: #if    defined(unix)
        !            62:     api_exch_api(regs, sregs, parms, length);
        !            63: #endif /* defined(unix) */
        !            64: 
        !            65:     if (regs->h.cl != 0) {
        !            66:        api_sup_errno = regs->h.cl;
        !            67:        return -1;
        !            68:     } else {
        !            69:        return 0;
        !            70:     }
        !            71: }
        !            72: 
        !            73: 
        !            74: /*
        !            75:  * Issue an API request without requiring caller to supply
        !            76:  * registers.  Most routines use this.
        !            77:  */
        !            78: 
        !            79: static int
        !            80: api_issue(ah, al, bh, bl, cx, dx, parms, length)
        !            81: int
        !            82:     ah,
        !            83:     al,
        !            84:     bh,
        !            85:     bl,
        !            86:     cx,
        !            87:     dx;
        !            88: char *parms;
        !            89: int length;                            /* Length of parms */
        !            90: {
        !            91:     union REGS regs;
        !            92:     struct SREGS sregs;
        !            93: 
        !            94:     return api_issue_regs(ah, al, bh, bl, cx, dx, parms, length, &regs, &sregs);
        !            95: }
        !            96: 
        !            97: /*
        !            98:  * Supervisor Services
        !            99:  */
        !           100: 
        !           101: int
        !           102: api_name_resolve(name)
        !           103: char *name;
        !           104: {
        !           105:     NameResolveParms parms;
        !           106:     int i;
        !           107:     union REGS regs;
        !           108:     struct SREGS sregs;
        !           109: 
        !           110:     for (i = 0; i < sizeof parms.gate_name; i++) {
        !           111:        if (*name) {
        !           112:            parms.gate_name[i] = *name++;
        !           113:        } else {
        !           114:            parms.gate_name[i] = ' ';
        !           115:        }
        !           116:     }
        !           117: 
        !           118:     if (api_issue_regs(NAME_RESOLUTION, 0, 0, 0, 0, 0, &parms, sizeof parms, &regs, &sregs)
        !           119:                    == -1) {
        !           120:        return -1;
        !           121:     } else {
        !           122:        return regs.x.dx;
        !           123:     }
        !           124: }
        !           125: 
        !           126: #if    defined(unix)
        !           127: /*
        !           128:  * Block until the oia or ps is modified.
        !           129:  */
        !           130: 
        !           131: int
        !           132: api_ps_or_oia_modified()
        !           133: {
        !           134:     union REGS regs;
        !           135:     struct SREGS sregs;
        !           136: 
        !           137:     if (api_issue_regs(PS_OR_OIA_MODIFIED, 0, 0, 0, 0, 0, 0, 0, &regs, &sregs)
        !           138:                    == -1) {
        !           139:        return -1;
        !           140:     } else {
        !           141:        return 0;
        !           142:     }
        !           143: }
        !           144: #endif /* defined(unix) */
        !           145: 
        !           146: /*
        !           147:  * Session Information Services
        !           148:  */
        !           149: 
        !           150: api_query_session_id(parms)
        !           151: QuerySessionIdParms *parms;
        !           152: {
        !           153:     if (api_issue(0x09, QUERY_SESSION_ID, 0x80, 0x20, 0,
        !           154:                                        gate_sessmgr, (char *)parms, sizeof *parms) == -1) {
        !           155:        api_fcn_errno = 0;
        !           156:        api_fcn_fcn_id = 0;
        !           157:        return -1;
        !           158:     } else if (parms->rc == 0) {
        !           159:        return 0;
        !           160:     } else {
        !           161:        api_fcn_errno = parms->rc;
        !           162:        api_fcn_fcn_id = parms->function_id;
        !           163:        return -1;
        !           164:     }
        !           165: }
        !           166: 
        !           167: 
        !           168: api_query_session_parameters(parms)
        !           169: QuerySessionParametersParms *parms;
        !           170: {
        !           171:     if (api_issue(0x09, QUERY_SESSION_PARAMETERS, 0x80, 0x20, 0,
        !           172:                            gate_sessmgr, (char *)parms, sizeof *parms) == -1) {
        !           173:        api_fcn_errno = 0;
        !           174:        api_fcn_fcn_id = 0;
        !           175:        return -1;
        !           176:     } else if (parms->rc == 0) {
        !           177:        return 0;
        !           178:     } else {
        !           179:        api_fcn_errno = parms->rc;
        !           180:        api_fcn_fcn_id = parms->function_id;
        !           181:        return -1;
        !           182:     }
        !           183: }
        !           184: 
        !           185: api_query_session_cursor(parms)
        !           186: QuerySessionCursorParms *parms;
        !           187: {
        !           188:     if (api_issue(0x09, QUERY_SESSION_CURSOR, 0x80, 0x20, 0xff,
        !           189:                        gate_sessmgr, (char *)parms, sizeof *parms) == -1) {
        !           190:        api_fcn_errno = 0;
        !           191:        api_fcn_fcn_id = 0;
        !           192:        return -1;
        !           193:     } else if (parms->rc == 0) {
        !           194:        return 0;
        !           195:     } else {
        !           196:        api_fcn_errno = parms->rc;
        !           197:        api_fcn_fcn_id = parms->function_id;
        !           198:        return -1;
        !           199:     }
        !           200: }
        !           201: 
        !           202: /*
        !           203:  * Keyboard Services
        !           204:  */
        !           205: 
        !           206: api_connect_to_keyboard(parms)
        !           207: ConnectToKeyboardParms *parms;
        !           208: {
        !           209:     if (api_issue(0x09, CONNECT_TO_KEYBOARD, 0x80, 0x20, 0,
        !           210:                        gate_keyboard, (char *)parms, sizeof *parms) == -1) {
        !           211:        api_fcn_errno = 0;
        !           212:        api_fcn_fcn_id = 0;
        !           213:        return -1;
        !           214:     } else if (parms->rc == 0) {
        !           215:        return 0;
        !           216:     } else {
        !           217:        api_fcn_errno = parms->rc;
        !           218:        api_fcn_fcn_id = parms->function_id;
        !           219:        return -1;
        !           220:     }
        !           221: }
        !           222: 
        !           223: 
        !           224: api_disconnect_from_keyboard(parms)
        !           225: DisconnectFromKeyboardParms *parms;
        !           226: {
        !           227:     if (api_issue(0x09, DISCONNECT_FROM_KEYBOARD, 0x80, 0x20, 0,
        !           228:                        gate_keyboard, (char *)parms, sizeof *parms) == -1) {
        !           229:        api_fcn_errno = 0;
        !           230:        api_fcn_fcn_id = 0;
        !           231:        return -1;
        !           232:     } else if (parms->rc == 0) {
        !           233:        return 0;
        !           234:     } else {
        !           235:        api_fcn_errno = parms->rc;
        !           236:        api_fcn_fcn_id = parms->function_id;
        !           237:        return -1;
        !           238:     }
        !           239: }
        !           240: 
        !           241: 
        !           242: api_write_keystroke(parms)
        !           243: WriteKeystrokeParms *parms;
        !           244: {
        !           245:     if (api_issue(0x09, WRITE_KEYSTROKE, 0x80, 0x20, 0,
        !           246:                        gate_keyboard, (char *)parms, sizeof *parms) == -1) {
        !           247:        api_fcn_errno = 0;
        !           248:        api_fcn_fcn_id = 0;
        !           249:        return -1;
        !           250:     } else if (parms->rc == 0) {
        !           251:        return 0;
        !           252:     } else {
        !           253:        api_fcn_errno = parms->rc;
        !           254:        api_fcn_fcn_id = parms->function_id;
        !           255:        return -1;
        !           256:     }
        !           257: }
        !           258: 
        !           259: 
        !           260: api_disable_input(parms)
        !           261: DisableInputParms *parms;
        !           262: {
        !           263:     if (api_issue(0x09, DISABLE_INPUT, 0x80, 0x20, 0,
        !           264:                        gate_keyboard, (char *)parms, sizeof *parms) == -1) {
        !           265:        api_fcn_errno = 0;
        !           266:        api_fcn_fcn_id = 0;
        !           267:        return -1;
        !           268:     } else if (parms->rc == 0) {
        !           269:        return 0;
        !           270:     } else {
        !           271:        api_fcn_errno = parms->rc;
        !           272:        api_fcn_fcn_id = parms->function_id;
        !           273:        return -1;
        !           274:     }
        !           275: }
        !           276: 
        !           277: api_enable_input(parms)
        !           278: EnableInputParms *parms;
        !           279: {
        !           280:     if (api_issue(0x09, ENABLE_INPUT, 0x80, 0x20, 0,
        !           281:                        gate_keyboard, (char *)parms, sizeof *parms) == -1) {
        !           282:        api_fcn_errno = 0;
        !           283:        api_fcn_fcn_id = 0;
        !           284:        return -1;
        !           285:     } else if (parms->rc == 0) {
        !           286:        return 0;
        !           287:     } else {
        !           288:        api_fcn_errno = parms->rc;
        !           289:        api_fcn_fcn_id = parms->function_id;
        !           290:        return -1;
        !           291:     }
        !           292: }
        !           293: 
        !           294: /*
        !           295:  * Copy Services
        !           296:  */
        !           297: 
        !           298: api_copy_string(parms)
        !           299: CopyStringParms *parms;
        !           300: {
        !           301:     if (api_issue(0x09, COPY_STRING, 0x80, 0x20, 0xff,
        !           302:                            gate_copy, (char *)parms, sizeof *parms) == -1) {
        !           303:        api_fcn_errno = 0;
        !           304:        api_fcn_fcn_id = 0;
        !           305:        return -1;
        !           306:     } else if (parms->rc == 0) {
        !           307:        return 0;
        !           308:     } else {
        !           309:        api_fcn_errno = parms->rc;
        !           310:        api_fcn_fcn_id = parms->function_id;
        !           311:        return -1;
        !           312:     }
        !           313: }
        !           314: 
        !           315: /*
        !           316:  * Operator Information Area Services
        !           317:  */
        !           318: 
        !           319: api_read_oia_group(parms)
        !           320: ReadOiaGroupParms *parms;
        !           321: {
        !           322:     if (api_issue(0x09, READ_OIA_GROUP, 0x80, 0x20, 0xff,
        !           323:                            gate_oiam, (char *)parms, sizeof *parms) == -1) {
        !           324:        api_fcn_errno = 0;
        !           325:        api_fcn_fcn_id = 0;
        !           326:        return -1;
        !           327:     } else if (parms->rc == 0) {
        !           328:        return 0;
        !           329:     } else {
        !           330:        api_fcn_errno = parms->rc;
        !           331:        api_fcn_fcn_id = parms->function_id;
        !           332:        return -1;
        !           333:     }
        !           334: }
        !           335: 
        !           336: /*
        !           337:  * The "we are done" routine.  This gets called last.
        !           338:  */
        !           339: 
        !           340: api_finish()
        !           341: {
        !           342: #if    defined(unix)
        !           343:     if (api_close_api() == -1) {
        !           344:        return -1;
        !           345:     } else {
        !           346:        return 0;
        !           347:     }
        !           348: #endif /* defined(unix) */
        !           349: }
        !           350: 
        !           351: 
        !           352: /*
        !           353:  * The initialization routine.  Be sure to call this first.
        !           354:  */
        !           355: 
        !           356: api_init()
        !           357: {
        !           358:     union REGS regs;
        !           359:     struct SREGS sregs;
        !           360: 
        !           361: #if    defined(MSDOS)
        !           362:     regs.h.ah = 0x35;
        !           363:     regs.h.al = API_INTERRUPT_NUMBER;
        !           364:     intdosx(&regs, &regs, &sregs);
        !           365: 
        !           366:     if ((regs.x.bx == 0) && (sregs.es == 0)) {
        !           367:        return 0;               /* Interrupt not being handled */
        !           368:     }
        !           369: #endif /* defined(MSDOS) */
        !           370: #if    defined(unix)
        !           371:     if (api_open_api(0) == -1) {
        !           372:        return 0;
        !           373:     }
        !           374: #endif /* defined(unix) */
        !           375: 
        !           376:     gate_sessmgr = api_name_resolve("SESSMGR");
        !           377:     gate_keyboard = api_name_resolve("KEYBOARD");
        !           378:     gate_copy = api_name_resolve("COPY");
        !           379:     gate_oiam = api_name_resolve("OIAM");
        !           380: 
        !           381:     if ((gate_sessmgr == gate_keyboard) ||
        !           382:        (gate_sessmgr == gate_copy) ||
        !           383:        (gate_sessmgr == gate_oiam) ||
        !           384:        (gate_keyboard == gate_copy) ||
        !           385:        (gate_keyboard == gate_oiam) ||
        !           386:        (gate_copy == gate_oiam)) {
        !           387:            return 0;           /* Interrupt doesn't seem correct */
        !           388:     }
        !           389:     return 1;
        !           390: }

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