1 /*- 2 * %sccs.include.proprietary.c% 3 */ 4 5 #ifndef lint 6 static char sccsid[] = "@(#)xget.c 8.1 (Berkeley) 06/06/93"; 7 #endif /* not lint */ 8 9 #include <sys/types.h> 10 #include <sys/dir.h> 11 #include <sys/stat.h> 12 #include <ctype.h> 13 #include <pwd.h> 14 #include "xmail.h" 15 #include "pathnames.h" 16 17 char *myname; 18 int uid; 19 struct direct *dbuf; 20 char *maildir = _PATH_SECRETMAIL; 21 FILE *kf, *mf; 22 DIR *df; 23 MINT *x, *b, *one, *t45, *z, *q, *r; 24 MINT *two, *t15, *mbuf; 25 char buf[256], line[128]; 26 #define MXF 100 27 int fnum[MXF], fcnt; 28 struct stat stbuf; 29 main() 30 { int i; 31 char *p; 32 33 uid = getuid(); 34 myname = (char *)getlogin(); 35 if(myname == NULL) 36 myname = getpwuid(uid)->pw_name; 37 comminit(); 38 mbuf = itom(0); 39 files(); 40 setup(getpass("Key: ")); 41 mkb(); 42 mkx(); 43 #ifndef debug 44 invert(x, b, x); 45 #else 46 invert(x, b, z); 47 mult(x, z, z); 48 mdiv(z, b, q, z); 49 omout(z); 50 invert(x, b, x); 51 #endif 52 for(i=0; i<fcnt; i++) 53 { sprintf(line, "%s%s.%d", maildir, myname, fnum[i]); 54 if(stat(line, &stbuf)<0) 55 { perror(line); 56 continue; 57 } 58 if(stbuf.st_size == 0) 59 { printf("zero length mail file\n"); 60 unlink(line); 61 continue; 62 } 63 if((mf = fopen(line, "r"))==NULL) 64 { perror(line); 65 continue; 66 } 67 decipher(mf, stdout); 68 cmnd: 69 printf("? "); 70 fgets(buf, sizeof(buf), stdin); 71 if(feof(stdin)) exit(0); 72 switch(buf[0]) 73 { 74 case 'q': 75 exit(0); 76 case 'n': 77 case 'd': 78 case '\n': 79 fclose(mf); 80 unlink(line); 81 break; 82 case '!': 83 system(buf+1); 84 printf("!\n"); 85 goto cmnd; 86 case 's': 87 case 'w': 88 rewind(mf); 89 if(buf[1] == '\n' || buf[1] == '\0') 90 strcpy(buf, "s mbox\n"); 91 for(p = buf+1; isspace(*p); p++); 92 p[strlen(p)-1] = 0; 93 kf = fopen(p, "a"); 94 if(kf == NULL) 95 { perror(p); 96 goto cmnd; 97 } 98 decipher(mf, kf); 99 fclose(mf); 100 fclose(kf); 101 unlink(line); 102 break; 103 default: 104 printf("Commands are:\n"); 105 printf("q quit, leaving unread messages\n"); 106 printf("n delete current message and goto next\n"); 107 printf("d same as above\n"); 108 printf("\\n same as above\n"); 109 printf("! execute shell command\n"); 110 printf("s save message in the named file or mbox\n"); 111 printf("w same as above\n"); 112 printf("? prints this list\n"); 113 goto cmnd; 114 } 115 } 116 exit(0); 117 } 118 icmp(a, b) int *a, *b; 119 { 120 return(*a - *b); 121 } 122 files() 123 { int i; 124 if((df = opendir(maildir)) == NULL) 125 { perror(maildir); 126 exit(1); 127 } 128 strcpy(line, myname); 129 strcat(line, ".%d"); 130 while ((dbuf = readdir(df)) != NULL) 131 { 132 if(sscanf(dbuf->d_name, line, &i) != 1) 133 continue; 134 if(fcnt >= MXF) 135 break; 136 fnum[fcnt++] = i; 137 } 138 closedir(df); 139 if(fcnt == 0) 140 { printf("no secret mail\n"); 141 exit(0); 142 } 143 qsort(fnum, fcnt, sizeof(int), icmp); 144 } 145 decipher(u, w) FILE *u, *w; 146 { int i; 147 short a; 148 for(;;) 149 { nin(mbuf, u); 150 if(feof(u)) break; 151 mult(mbuf, x, mbuf); 152 mdiv(mbuf, b, q, mbuf); 153 for(i=1; i<=3; i++) 154 { a = mbuf->val[i]; 155 putc(a&0177, w); 156 a >>= 8; 157 putc(a&0177, w); 158 } 159 } 160 } 161