| 1 | #include "../api/api.h" |
| 2 | |
| 3 | #include "apilib.h" |
| 4 | |
| 5 | int |
| 6 | api_sup_errno = 0, /* Supervisor error number */ |
| 7 | api_sup_fcn_id = 0, /* Supervisor function id (0x12) */ |
| 8 | api_fcn_errno = 0, /* Function error number */ |
| 9 | api_fcn_fcn_id = 0; /* Function ID (0x6b, etc.) */ |
| 10 | |
| 11 | static int |
| 12 | gate_sessmgr = 0, |
| 13 | gate_keyboard = 0, |
| 14 | gate_copy = 0, |
| 15 | gate_oiam = 0; |
| 16 | |
| 17 | /* |
| 18 | * Issue an API request, with reg structures supplied by the caller. |
| 19 | * |
| 20 | * Only certain routines need this (supervisor services come to mind). |
| 21 | */ |
| 22 | |
| 23 | int |
| 24 | api_issue_regs(ah, al, bh, bl, cx, dx, parms, regs, sregs) |
| 25 | int ah, al, bh, bl, cx, dx; |
| 26 | char *parms; |
| 27 | union REGS *regs; |
| 28 | struct SREGS *sregs; |
| 29 | { |
| 30 | char far *ourseg = parms; |
| 31 | |
| 32 | regs->h.ah = ah; |
| 33 | regs->h.al = al; |
| 34 | regs->h.bh = bh; |
| 35 | regs->h.bl = bl; |
| 36 | regs->x.cx = cx; |
| 37 | regs->x.dx = dx; |
| 38 | sregs->es = (int) FP_SEG(ourseg); |
| 39 | regs->x.di = (int) FP_OFF(ourseg); |
| 40 | |
| 41 | int86x(API_INTERRUPT_NUMBER, regs, regs, sregs); |
| 42 | if (regs->h.cl != 0) { |
| 43 | api_sup_errno = regs->h.cl; |
| 44 | return -1; |
| 45 | } else { |
| 46 | return 0; |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | |
| 51 | /* |
| 52 | * Issue an API request without requiring caller to supply |
| 53 | * registers. Most routines use this. |
| 54 | */ |
| 55 | |
| 56 | int |
| 57 | api_issue(ah, al, bh, bl, cx, dx, parms) |
| 58 | int |
| 59 | ah, |
| 60 | al, |
| 61 | bh, |
| 62 | bl, |
| 63 | cx, |
| 64 | dx; |
| 65 | char *parms; |
| 66 | { |
| 67 | union REGS regs; |
| 68 | struct SREGS sregs; |
| 69 | |
| 70 | return api_issue_regs(ah, al, bh, bl, cx, dx, parms, ®s, &sregs); |
| 71 | } |
| 72 | \f |
| 73 | /* |
| 74 | * Supervisor Services |
| 75 | */ |
| 76 | |
| 77 | int |
| 78 | api_name_resolve(name) |
| 79 | char *name; |
| 80 | { |
| 81 | NameResolveParms parms; |
| 82 | int i; |
| 83 | union REGS regs; |
| 84 | struct SREGS sregs; |
| 85 | |
| 86 | for (i = 0; i < sizeof parms.gate_name; i++) { |
| 87 | if (*name) { |
| 88 | parms.gate_name[i] = *name++; |
| 89 | } else { |
| 90 | parms.gate_name[i] = ' '; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | if (api_issue_regs(NAME_RESOLUTION, 0, 0, 0, 0, 0, &parms, ®s, &sregs) |
| 95 | == -1) { |
| 96 | return -1; |
| 97 | } else { |
| 98 | return regs.x.dx; |
| 99 | } |
| 100 | } |
| 101 | \f |
| 102 | /* |
| 103 | * Session Information Services |
| 104 | */ |
| 105 | |
| 106 | api_query_session_id(parms) |
| 107 | QuerySessionIdParms *parms; |
| 108 | { |
| 109 | if (api_issue(0x09, QUERY_SESSION_ID, 0x80, 0x20, 0, |
| 110 | gate_sessmgr, (char *)parms) == -1) { |
| 111 | api_fcn_errno = 0; |
| 112 | api_fcn_fcn_id = 0; |
| 113 | return -1; |
| 114 | } else if (parms->rc == 0) { |
| 115 | return 0; |
| 116 | } else { |
| 117 | api_fcn_errno = parms->rc; |
| 118 | api_fcn_fcn_id = parms->function_id; |
| 119 | return -1; |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | |
| 124 | api_query_session_parameters(parms) |
| 125 | QuerySessionParametersParms *parms; |
| 126 | { |
| 127 | if (api_issue(0x09, QUERY_SESSION_PARAMETERS, 0x80, 0x20, 0, |
| 128 | gate_sessmgr, (char *)parms) == -1) { |
| 129 | api_fcn_errno = 0; |
| 130 | api_fcn_fcn_id = 0; |
| 131 | return -1; |
| 132 | } else if (parms->rc == 0) { |
| 133 | return 0; |
| 134 | } else { |
| 135 | api_fcn_errno = parms->rc; |
| 136 | api_fcn_fcn_id = parms->function_id; |
| 137 | return -1; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | api_query_session_cursor(parms) |
| 142 | QuerySessionCursorParms *parms; |
| 143 | { |
| 144 | if (api_issue(0x09, QUERY_SESSION_CURSOR, 0x80, 0x20, 0xff, |
| 145 | gate_sessmgr, (char *)parms) == -1) { |
| 146 | api_fcn_errno = 0; |
| 147 | api_fcn_fcn_id = 0; |
| 148 | return -1; |
| 149 | } else if (parms->rc == 0) { |
| 150 | return 0; |
| 151 | } else { |
| 152 | api_fcn_errno = parms->rc; |
| 153 | api_fcn_fcn_id = parms->function_id; |
| 154 | return -1; |
| 155 | } |
| 156 | } |
| 157 | \f |
| 158 | /* |
| 159 | * Keyboard Services |
| 160 | */ |
| 161 | |
| 162 | api_connect_to_keyboard(parms) |
| 163 | ConnectToKeyboardParms *parms; |
| 164 | { |
| 165 | if (api_issue(0x09, CONNECT_TO_KEYBOARD, 0x80, 0x20, 0, |
| 166 | gate_keyboard, (char *)parms) == -1) { |
| 167 | api_fcn_errno = 0; |
| 168 | api_fcn_fcn_id = 0; |
| 169 | return -1; |
| 170 | } else if (parms->rc == 0) { |
| 171 | return 0; |
| 172 | } else { |
| 173 | api_fcn_errno = parms->rc; |
| 174 | api_fcn_fcn_id = parms->function_id; |
| 175 | return -1; |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | |
| 180 | api_disconnect_from_keyboard(parms) |
| 181 | DisconnectFromKeyboardParms *parms; |
| 182 | { |
| 183 | if (api_issue(0x09, DISCONNECT_FROM_KEYBOARD, 0x80, 0x20, 0, |
| 184 | gate_keyboard, (char *)parms) == -1) { |
| 185 | api_fcn_errno = 0; |
| 186 | api_fcn_fcn_id = 0; |
| 187 | return -1; |
| 188 | } else if (parms->rc == 0) { |
| 189 | return 0; |
| 190 | } else { |
| 191 | api_fcn_errno = parms->rc; |
| 192 | api_fcn_fcn_id = parms->function_id; |
| 193 | return -1; |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | |
| 198 | api_write_keystroke(parms) |
| 199 | WriteKeystrokeParms *parms; |
| 200 | { |
| 201 | if (api_issue(0x09, WRITE_KEYSTROKE, 0x80, 0x20, 0, |
| 202 | gate_keyboard, (char *)parms) == -1) { |
| 203 | api_fcn_errno = 0; |
| 204 | api_fcn_fcn_id = 0; |
| 205 | return -1; |
| 206 | } else if (parms->rc == 0) { |
| 207 | return 0; |
| 208 | } else { |
| 209 | api_fcn_errno = parms->rc; |
| 210 | api_fcn_fcn_id = parms->function_id; |
| 211 | return -1; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | |
| 216 | api_disable_input(parms) |
| 217 | DisableInputParms *parms; |
| 218 | { |
| 219 | if (api_issue(0x09, DISABLE_INPUT, 0x80, 0x20, 0, |
| 220 | gate_keyboard, (char *)parms) == -1) { |
| 221 | api_fcn_errno = 0; |
| 222 | api_fcn_fcn_id = 0; |
| 223 | return -1; |
| 224 | } else if (parms->rc == 0) { |
| 225 | return 0; |
| 226 | } else { |
| 227 | api_fcn_errno = parms->rc; |
| 228 | api_fcn_fcn_id = parms->function_id; |
| 229 | return -1; |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | api_enable_input(parms) |
| 234 | EnableInputParms *parms; |
| 235 | { |
| 236 | if (api_issue(0x09, ENABLE_INPUT, 0x80, 0x20, 0, |
| 237 | gate_keyboard, (char *)parms) == -1) { |
| 238 | api_fcn_errno = 0; |
| 239 | api_fcn_fcn_id = 0; |
| 240 | return -1; |
| 241 | } else if (parms->rc == 0) { |
| 242 | return 0; |
| 243 | } else { |
| 244 | api_fcn_errno = parms->rc; |
| 245 | api_fcn_fcn_id = parms->function_id; |
| 246 | return -1; |
| 247 | } |
| 248 | } |
| 249 | \f |
| 250 | /* |
| 251 | * Copy Services |
| 252 | */ |
| 253 | |
| 254 | api_copy_string(parms) |
| 255 | CopyStringParms *parms; |
| 256 | { |
| 257 | if (api_issue(0x09, COPY_STRING, 0x80, 0x20, 0xff, |
| 258 | gate_copy, (char *)parms) == -1) { |
| 259 | api_fcn_errno = 0; |
| 260 | api_fcn_fcn_id = 0; |
| 261 | return -1; |
| 262 | } else if (parms->rc == 0) { |
| 263 | return 0; |
| 264 | } else { |
| 265 | api_fcn_errno = parms->rc; |
| 266 | api_fcn_fcn_id = parms->function_id; |
| 267 | return -1; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | /* |
| 272 | * Operator Information Area Services |
| 273 | */ |
| 274 | |
| 275 | api_read_oia_group(parms) |
| 276 | ReadOiaGroupParms *parms; |
| 277 | { |
| 278 | if (api_issue(0x09, READ_OIA_GROUP, 0x80, 0x20, 0xff, |
| 279 | gate_oiam, (char *)parms) == -1) { |
| 280 | api_fcn_errno = 0; |
| 281 | api_fcn_fcn_id = 0; |
| 282 | return -1; |
| 283 | } else if (parms->rc == 0) { |
| 284 | return 0; |
| 285 | } else { |
| 286 | api_fcn_errno = parms->rc; |
| 287 | api_fcn_fcn_id = parms->function_id; |
| 288 | return -1; |
| 289 | } |
| 290 | } |
| 291 | \f |
| 292 | /* |
| 293 | * The initialization routine. Be sure to call this first. |
| 294 | */ |
| 295 | |
| 296 | api_init() |
| 297 | { |
| 298 | union REGS regs; |
| 299 | struct SREGS sregs; |
| 300 | |
| 301 | regs.h.ah = 0x35; |
| 302 | regs.h.al = API_INTERRUPT_NUMBER; |
| 303 | intdosx(®s, ®s, &sregs); |
| 304 | |
| 305 | if ((regs.x.bx == 0) && (sregs.es == 0)) { |
| 306 | return 0; /* Interrupt not being handled */ |
| 307 | } |
| 308 | |
| 309 | gate_sessmgr = api_name_resolve("SESSMGR"); |
| 310 | gate_keyboard = api_name_resolve("KEYBOARD"); |
| 311 | gate_copy = api_name_resolve("COPY"); |
| 312 | gate_oiam = api_name_resolve("OIAM"); |
| 313 | |
| 314 | if ((gate_sessmgr == gate_keyboard) || |
| 315 | (gate_sessmgr == gate_copy) || |
| 316 | (gate_sessmgr == gate_oiam) || |
| 317 | (gate_keyboard == gate_copy) || |
| 318 | (gate_keyboard == gate_oiam) || |
| 319 | (gate_copy == gate_oiam)) { |
| 320 | return 0; /* Interrupt doesn't seem correct */ |
| 321 | } |
| 322 | return 1; |
| 323 | } |