| 1 | #include <signal.h> |
| 2 | /* |
| 3 | * lpr -- on-line printer spooler |
| 4 | * normally invoked through opr |
| 5 | */ |
| 6 | |
| 7 | char tfname[] = "/usr/lpd/tfaXXXXX"; |
| 8 | char cfname[] = "/usr/lpd/cfaXXXXX"; |
| 9 | char lfname[] = "/usr/lpd/lfaXXXXX"; |
| 10 | char dfname[] = "/usr/lpd/dfaXXXXX"; |
| 11 | int nact; |
| 12 | int tff; |
| 13 | int mailflg; |
| 14 | char person[10]; |
| 15 | int inchar; |
| 16 | int maxrec = 400; |
| 17 | |
| 18 | main(argc, argv) |
| 19 | int argc; |
| 20 | char *argv[]; |
| 21 | { |
| 22 | register char *arg, *remote; |
| 23 | int c, f, flag; |
| 24 | int out(); |
| 25 | |
| 26 | pidfn(); |
| 27 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) |
| 28 | signal(SIGHUP, out); |
| 29 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
| 30 | signal(SIGINT, out); |
| 31 | if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) |
| 32 | signal(SIGQUIT, out); |
| 33 | remote = "$ remote **,onl"; |
| 34 | flag = 0; |
| 35 | tff = nfile(tfname); |
| 36 | while (argc>1 && (arg = argv[1])[0]=='-') { |
| 37 | if (arg[1] && arg[2]) { |
| 38 | remote[12] = arg[1]; |
| 39 | remote[13] = arg[2]; |
| 40 | remote[14] = 0; |
| 41 | } else switch (arg[1]) { |
| 42 | |
| 43 | case '-': |
| 44 | remote[12] = 'r'; |
| 45 | remote[13] = '1'; |
| 46 | remote[14] = '\0'; |
| 47 | break; |
| 48 | |
| 49 | case 'c': |
| 50 | flag = '+'; |
| 51 | break; |
| 52 | |
| 53 | case 'r': |
| 54 | flag = '-'; |
| 55 | break; |
| 56 | |
| 57 | case 'm': |
| 58 | mailflg = 1; |
| 59 | break; |
| 60 | } |
| 61 | argc--; |
| 62 | argv++; |
| 63 | } |
| 64 | ident(); |
| 65 | if(argc == 1) |
| 66 | copy(0); |
| 67 | while(--argc) { |
| 68 | arg = *++argv; |
| 69 | if(flag == '+') |
| 70 | goto cf; |
| 71 | if(*arg == '/' && flag != '-') { |
| 72 | card('F', arg); |
| 73 | nact++; |
| 74 | continue; |
| 75 | } |
| 76 | if(link(arg, lfname) < 0) |
| 77 | goto cf; |
| 78 | card('F', lfname); |
| 79 | card('U', lfname); |
| 80 | lfname[inchar]++; |
| 81 | nact++; |
| 82 | goto df; |
| 83 | |
| 84 | cf: |
| 85 | f = open(arg, 0); |
| 86 | if(f < 0) { |
| 87 | printf("Cannot open %s\n", arg); |
| 88 | continue; |
| 89 | } |
| 90 | copy(f); |
| 91 | close(f); |
| 92 | |
| 93 | df: |
| 94 | if(flag == '-') { |
| 95 | f = unlink(arg); |
| 96 | if(f < 0) |
| 97 | printf("Cannot remove %s\n", arg); |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | if(nact) { |
| 102 | tfname[inchar]--; |
| 103 | f = link(tfname, dfname); |
| 104 | if(f < 0) { |
| 105 | printf("Cannot rename %s\n", dfname); |
| 106 | tfname[inchar]++; |
| 107 | out(); |
| 108 | } |
| 109 | unlink(tfname); |
| 110 | execl("/usr/lib/lpd", "lpd", 0); |
| 111 | dfname[inchar]++; |
| 112 | printf("Daemon doesn't exist\n"); |
| 113 | exit(0); |
| 114 | } |
| 115 | out(); |
| 116 | } |
| 117 | |
| 118 | copy(f) |
| 119 | int f; |
| 120 | { |
| 121 | int ff, i, nr, nc; |
| 122 | static int buf[256]; |
| 123 | |
| 124 | card('F', cfname); |
| 125 | card('U', cfname); |
| 126 | ff = nfile(cfname); |
| 127 | nc = 0; |
| 128 | nr = 0; |
| 129 | while((i = read(f, buf, 512)) > 0) { |
| 130 | write(ff, buf, i); |
| 131 | nc += i; |
| 132 | if(nc >= 512) { |
| 133 | nc -= 512; |
| 134 | nr++; |
| 135 | if(nr > maxrec) { |
| 136 | printf("Copy file is too large\n"); |
| 137 | break; |
| 138 | } |
| 139 | } |
| 140 | } |
| 141 | close(ff); |
| 142 | nact++; |
| 143 | } |
| 144 | |
| 145 | card(c, s) |
| 146 | int c; |
| 147 | char s[]; |
| 148 | { |
| 149 | char *p1, *p2; |
| 150 | static char buf[512]; |
| 151 | int col; |
| 152 | |
| 153 | p1 = buf; |
| 154 | p2 = s; |
| 155 | col = 0; |
| 156 | *p1++ = c; |
| 157 | while((c = *p2++) != '\0') { |
| 158 | *p1++ = c; |
| 159 | col++; |
| 160 | } |
| 161 | *p1++ = '\n'; |
| 162 | write(tff, buf, col+2); |
| 163 | } |
| 164 | |
| 165 | ident() |
| 166 | { |
| 167 | int c, n; |
| 168 | register char *b1p, *pp, *b2p; |
| 169 | static char b1[100], b2[100]; |
| 170 | |
| 171 | b1p = b1; |
| 172 | if(getpw(getuid(), b1p)) { |
| 173 | b1p = "pdp::::m0000,m000:"; |
| 174 | } |
| 175 | n = 0; |
| 176 | b2p = b2; |
| 177 | while(*b2p++ = "$ ident "[n++]); |
| 178 | b2p--; |
| 179 | n = 5; |
| 180 | while(--n) while(*b1p++ != ':'); |
| 181 | while((*b2p++ = *b1p++) != ':'); |
| 182 | b2p[-1] = ','; |
| 183 | b1p = b1; |
| 184 | pp = person; |
| 185 | while((c = *b1p++) != ':') { |
| 186 | *b2p++ = c; |
| 187 | *pp++ = c; |
| 188 | } |
| 189 | *b2p++ = 0; |
| 190 | *pp++ = 0; |
| 191 | card('L', person); |
| 192 | if (mailflg) |
| 193 | card('M', person); |
| 194 | } |
| 195 | |
| 196 | pidfn() |
| 197 | { |
| 198 | register i, j, c; |
| 199 | int s; |
| 200 | int p; |
| 201 | |
| 202 | s = p = getpid(); |
| 203 | p &= 077777; |
| 204 | i = 0; |
| 205 | while(tfname[i] != 'X') |
| 206 | i++; |
| 207 | i += 4; |
| 208 | for(j=0; j<5; j++) { |
| 209 | c = (p%10) + '0'; |
| 210 | if(s<0 && j==4) |
| 211 | c += 4; |
| 212 | p /= 10; |
| 213 | tfname[i] = c; |
| 214 | cfname[i] = c; |
| 215 | lfname[i] = c; |
| 216 | dfname[i] = c; |
| 217 | i--; |
| 218 | } |
| 219 | inchar = i; |
| 220 | } |
| 221 | |
| 222 | nfile(name) |
| 223 | char *name; |
| 224 | { |
| 225 | register f; |
| 226 | |
| 227 | f = creat(name, 0666); |
| 228 | if(f < 0) { |
| 229 | printf("Cannot create %s\n", name); |
| 230 | out(); |
| 231 | } |
| 232 | name[inchar]++; |
| 233 | return(f); |
| 234 | } |
| 235 | |
| 236 | out() |
| 237 | { |
| 238 | register i; |
| 239 | |
| 240 | signal(SIGHUP, SIG_IGN); |
| 241 | signal(SIGINT, SIG_IGN); |
| 242 | signal(SIGQUIT, SIG_IGN); |
| 243 | i = inchar; |
| 244 | while(tfname[i] != 'a') { |
| 245 | tfname[i]--; |
| 246 | unlink(tfname); |
| 247 | } |
| 248 | while(cfname[i] != 'a') { |
| 249 | cfname[i]--; |
| 250 | unlink(cfname); |
| 251 | } |
| 252 | while(lfname[i] != 'a') { |
| 253 | lfname[i]--; |
| 254 | unlink(lfname); |
| 255 | } |
| 256 | while(dfname[i] != 'a') { |
| 257 | dfname[i]--; |
| 258 | unlink(dfname); |
| 259 | } |
| 260 | exit(0); |
| 261 | } |