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Annotation of sbbs/sbbs2/smm/makemsg.c, revision 1.1

1.1     ! root        1: /* MAKEMSG.C */
        !             2: 
        !             3: /* Developed 1990-1997 by Rob Swindell; PO Box 501, Yorba Linda, CA 92885 */
        !             4: 
        !             5: #include <dos.h>
        !             6: #include <stdio.h>
        !             7: #include <time.h>
        !             8: #include "gen_defs.h"
        !             9: 
        !            10: /****************************************************************************/
        !            11: /* Converts a date string in format MM/DD/YY into unix time format                     */
        !            12: /****************************************************************************/
        !            13: time_t dstrtounix(char *str)
        !            14: {
        !            15:        struct date date;
        !            16:        struct time curtime;
        !            17: 
        !            18: if(!strcmp(str,"00/00/00") || !str[0])
        !            19:        return(NULL);
        !            20: curtime.ti_hour=curtime.ti_min=curtime.ti_sec=0;
        !            21: if(str[6]<'7')
        !            22:        date.da_year=2000+((str[6]&0xf)*10)+(str[7]&0xf);
        !            23: else
        !            24:        date.da_year=1900+((str[6]&0xf)*10)+(str[7]&0xf);
        !            25: date.da_mon=((str[0]&0xf)*10)+(str[1]&0xf);
        !            26: date.da_day=((str[3]&0xf)*10)+(str[4]&0xf);
        !            27: return(dostounix(&date,&curtime));
        !            28: }
        !            29: 
        !            30: uchar cryptchar(uchar ch, ulong seed)
        !            31: {
        !            32: if(ch==1)
        !            33:        return(0xfe);
        !            34: if(ch<0x20 || ch&0x80) /* Ctrl chars and ex-ASCII are not xlated */
        !            35:        return(ch);
        !            36: return(ch^(seed&0x1f));
        !            37: }
        !            38: 
        !            39: int main(int argc, char **argv)
        !            40: {
        !            41:        char str[256];
        !            42:        FILE *in,*out;
        !            43:        int i,j;
        !            44:        long l;
        !            45: 
        !            46: if(argc<4) {
        !            47:        printf("usage: makemsg infile outfile mm/dd/yy\n");
        !            48:        exit(1); }
        !            49: 
        !            50: if((in=fopen(argv[1],"rb"))==NULL) {
        !            51:        printf("error opening %s\n",argv[1]);
        !            52:        exit(1); }
        !            53: 
        !            54: if((out=fopen(argv[2],"wb"))==NULL) {
        !            55:        printf("error opening %s\n",argv[2]);
        !            56:        exit(1); }
        !            57: 
        !            58: l=dstrtounix(argv[3]);
        !            59: if(!l) {
        !            60:        printf("Invalid date %s\n",argv[3]);
        !            61:        exit(1); }
        !            62: fprintf(out,"%lx\r\n",l^0x305F6C81UL);
        !            63: i=ftell(out);
        !            64: while(!feof(in)) {
        !            65:        if(!fgets(str,128,in))
        !            66:                break;
        !            67:        for(j=0;str[j];j++,i++)
        !            68:                fputc(cryptchar(str[j],l^(i&7)),out); }
        !            69: return(0);
        !            70: }

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