| 63,26 → 63,50 |
|---|
| /* check RMOD signature (would be overwritten in case of stack overflow */ |
| static char msg[] = "!! MEMORY CORRUPTION ## DETECTED !!"; |
| unsigned short far *rmodsig = MK_FP(rmodseg, 0x100 + 6); |
| unsigned char far *rmod = MK_FP(rmodseg, 0); |
| |
| if (*rmodsig != 0x2019) { |
| msg[22] = '1'; |
| outputnl(msg); |
| printf("rmodseg = %04X ; *rmodsig = %04X\r\n", rmodseg, *rmodsig); |
| return(1); |
| goto FAIL; |
| } |
| |
| /* check last BUFFER byte */ |
| if (BUFFER[sizeof(BUFFER) - 1] != 0xC7) { |
| msg[22] = '2'; |
| outputnl(msg); |
| return(2); |
| goto FAIL; |
| } |
| |
| /* check last cmdlinebuf byte */ |
| if (cmdlinebuf[CMDLINE_MAXLEN] != 0xC7) { |
| msg[22] = '3'; |
| outputnl(msg); |
| return(3); |
| goto FAIL; |
| } |
| /* all good */ |
| |
| /* check rmod exec buf */ |
| if (rmod[RMOD_OFFSET_EXECPROG + 127] != 0) { |
| msg[22] = '4'; |
| goto FAIL; |
| } |
| |
| /* check rmod exec stdin buf */ |
| if (rmod[RMOD_OFFSET_STDINFILE + 127] != 0) { |
| msg[22] = '5'; |
| goto FAIL; |
| } |
| |
| /* check rmod exec stdout buf */ |
| if (rmod[RMOD_OFFSET_STDOUTFILE + 127] != 0) { |
| msg[22] = '6'; |
| goto FAIL; |
| } |
| |
| /* else all good */ |
| return(0); |
| |
| /* error handling */ |
| FAIL: |
| outputnl(msg); |
| return(1); |
| } |
| |
| |
| 421,8 → 445,7 |
|---|
| /* special handling of batch files */ |
| if ((ext != NULL) && (imatch(ext, "bat"))) { |
| /* copy truename of the bat file to rmod buff */ |
| for (i = 0; cmdfile[i] != 0; i++) rmod->batfile[i] = cmdfile[i]; |
| rmod->batfile[i] = 0; |
| _fstrcpy(rmod->batfile, cmdfile); |
| |
| /* explode args of the bat file and store them in rmod buff */ |
| cmd_explode(buff, cmdline, NULL); |
| 437,28 → 460,21 |
|---|
| } |
| |
| /* copy full filename to execute, along with redirected files (if any) */ |
| for (i = 0; cmdfile[i] != 0; i++) rmod_execprog[i] = cmdfile[i]; |
| rmod_execprog[i++] = 0; |
| _fstrcpy(rmod_execprog, cmdfile); |
| |
| /* copy stdin file if a redirection is needed */ |
| if (redir->stdinfile) { |
| unsigned short far *farptr = MK_FP(rmod->rmodseg, RMOD_OFFSET_STDINFILE); |
| unsigned short t; |
| *farptr = i; |
| for (t = 0;; t++) { |
| rmod_execprog[i++] = redir->stdinfile[t]; |
| if (redir->stdinfile[t] == 0) break; |
| } |
| char far *farptr = MK_FP(rmod->rmodseg, RMOD_OFFSET_STDINFILE); |
| _fstrcpy(farptr, redir->stdinfile); |
| } |
| |
| /* same for stdout file */ |
| if (redir->stdoutfile) { |
| unsigned short far *farptr = MK_FP(rmod->rmodseg, RMOD_OFFSET_STDOUTFILE); |
| unsigned short t; |
| *farptr = i; |
| for (t = 0;; t++) { |
| rmod_execprog[i++] = redir->stdoutfile[t]; |
| if (redir->stdoutfile[t] == 0) break; |
| } |
| char far *farptr = MK_FP(rmod->rmodseg, RMOD_OFFSET_STDOUTFILE); |
| unsigned short far *farptr16 = MK_FP(rmod->rmodseg, RMOD_OFFSET_STDOUTAPP); |
| _fstrcpy(farptr, redir->stdoutfile); |
| /* openflag */ |
| farptr = MK_FP(rmod->rmodseg, RMOD_OFFSET_STDOUTAPP); |
| *farptr = redir->stdout_openflag; |
| *farptr16 = redir->stdout_openflag; |
| } |
| |
| /* copy cmdtail to rmod's PSP and compute its len */ |