4.3BSD - /usr/src/usr.bin/uucp/uucp.c

   1: #ifndef lint
   2: static char sccsid[] = "@(#)uucp.c	5.5 (Berkeley) 10/9/85";
   3: #endif
   4: 
   5: #include "uucp.h"
   6: #include <sys/stat.h>
   7: #include "uust.h"
   8: 
   9: /*
  10:  *	uucp
  11:  */
  12: int Uid;
  13: char *Ropt = " ";
  14: char Path[100], Optns[10], Ename[MAXBASENAME+1];
  15: char Grade = 'n';
  16: #ifdef DONTCOPY
  17: int Copy = 0;
  18: #else !DONTCOPY
  19: int Copy = 1;
  20: #endif !DONTCOPY
  21: char Nuser[32];
  22: struct timeb Now;
  23: 
  24: /* variables used to check if talking to more than one system. */
  25: int xsflag = -1;
  26: char    xsys[MAXBASENAME+1] = 0;
  27: 
  28: long Nbytes = 0;
  29: #define MAXBYTES 50000  /* maximun number of bytes of data per C. file */
  30: #define MAXCOUNT 15 /* maximun number of files per C. file */
  31: 
  32: main(argc, argv)
  33: char *argv[];
  34: {
  35:     int ret;
  36:     char *sysfile1, *sysfl2;
  37:     register char *cp;
  38:     char file1[MAXFULLNAME], file2[MAXFULLNAME];
  39:     int avoidgwd = 0;
  40: 
  41:     strcpy(Progname, "uucp");
  42:     uucpname(Myname);
  43:     umask(WFMASK);
  44:     Optns[0] = '-';
  45:     Optns[1] = 'd';
  46: #ifdef DONTCOPY
  47:     Optns[2] = 'c';
  48: #else !DONTCOPY
  49:     Optns[2] = 'C';
  50: #endif !DONTCOPY
  51:     Ename[0] = Nuser[0] = Optns[3] = '\0';
  52:     while(argc>1 && argv[1][0] == '-'){
  53:         switch(argv[1][1]){
  54:         case 'a':
  55:             /* efficiency hack; avoid gwd call */
  56:             avoidgwd = 1;
  57:             break;
  58:         case 'C':
  59:             Copy = 1;
  60:             Optns[2] = 'C';
  61:             break;
  62:         case 'c':
  63:             Copy = 0;
  64:             Optns[2] = 'c';
  65:             break;
  66:         case 'd':
  67:             break;
  68:         case 'f':
  69:             Optns[1] = 'f';
  70:             break;
  71:         case 'e':
  72:             strncpy(Ename, &argv[1][2], MAXBASENAME);
  73:             break;
  74:         case 'g':
  75:             Grade = argv[1][2];
  76:             break;
  77:         case 'm':
  78:             strcat(Optns, "m");
  79:             break;
  80:         case 'n':
  81:             sprintf(Nuser, "%.31s", &argv[1][2]);
  82:             break;
  83:         case 'r':
  84:             Ropt = argv[1];
  85:             break;
  86:         case 's':
  87:             Spool = &argv[1][2]; break;
  88:         case 'x':
  89:             chkdebug();
  90:             Debug = atoi(&argv[1][2]);
  91:             if (Debug <= 0)
  92:                 Debug = 1;
  93:             break;
  94:         default:
  95:             printf("unknown flag %s\n", argv[1]); break;
  96:         }
  97:         --argc;  argv++;
  98:     }
  99:     DEBUG(4, "\n\n** %s **\n", "START");
 100:     if (!avoidgwd) {
 101:         cp = getwd(Wrkdir);
 102:         ASSERT(cp != 0, "GETWD FAILED", Wrkdir, cp);
 103:     }
 104:     ret = subchdir(Spool);
 105:     ASSERT(ret >= 0, "CHDIR FAILED", Spool, ret);
 106: 
 107:     Uid = getuid();
 108:     ret = guinfo(Uid, User, Path);
 109:     ASSERT(ret == 0, "CAN NOT FIND UID", CNULL, Uid);
 110:     DEBUG(4, "UID %d, ", Uid);
 111:     DEBUG(4, "User %s,", User);
 112:     DEBUG(4, "Ename (%s) ", Ename);
 113:     DEBUG(4, "PATH %s\n", Path);
 114:     if (argc < 3) {
 115:         fprintf(stderr, "usage uucp from ... to\n");
 116:         cleanup(1);
 117:     }
 118: 
 119: 
 120:     /*  set up "to" system and file names  */
 121:     if ((cp = index(argv[argc - 1], '!')) != NULL) {
 122:         sysfl2 = argv[argc - 1];
 123:         *cp = '\0';
 124:         if (*sysfl2 == '\0')
 125:             sysfl2 = Myname;
 126:         else
 127:             strncpy(Rmtname, sysfl2, MAXBASENAME);
 128:         if (versys(&sysfl2) != 0) {
 129:             fprintf(stderr, "bad system name: %s\n", sysfl2);
 130:             cleanup(1);
 131:         }
 132:         if (Rmtname[0] != '\0')
 133:             strncpy(Rmtname, sysfl2, MAXBASENAME);
 134:         /* block multi-hop requests immediately */
 135:         if (index(cp+1, '!') != NULL) {
 136:             fprintf(stderr, "uucp handles only adjacent sites.\n");
 137:             fprintf(stderr, "Try uusend for multi-hop delivery.\n");
 138:             cleanup(1);
 139:         }
 140:         strcpy(file2, cp + 1);
 141:     }
 142:     else {
 143:         sysfl2 = Myname;
 144:         strcpy(file2, argv[argc - 1]);
 145:     }
 146:     if (strlen(sysfl2) > MAXBASENAME)
 147:         sysfl2[MAXBASENAME] = '\0';
 148: 
 149: 
 150:     /*  do each from argument  */
 151:     while (argc > 2) {
 152:         if ((cp = index(argv[1], '!')) != NULL) {
 153:             sysfile1 = argv[1];
 154:             *cp = '\0';
 155:             if (strlen(sysfile1) > MAXBASENAME)
 156:                 sysfile1[MAXBASENAME] = '\0';
 157:             if (*sysfile1 == '\0')
 158:                 sysfile1 = Myname;
 159:             else
 160:                 strncpy(Rmtname, sysfile1, MAXBASENAME);
 161:             if (versys(&sysfile1) != 0) {
 162:                 fprintf(stderr, "bad system name: %s\n", sysfile1);
 163:                 cleanup(0);
 164:             }
 165:             if (Rmtname[0] != '\0')
 166:                 strncpy(Rmtname, sysfl2, MAXBASENAME);
 167:             strcpy(file1, cp + 1);
 168:         }
 169:         else {
 170:             sysfile1 = Myname;
 171:             strcpy(file1, argv[1]);
 172:         }
 173:         DEBUG(4, "file1 - %s\n", file1);
 174:         copy(sysfile1, file1, sysfl2, file2);
 175:         --argc;
 176:         argv++;
 177:     }
 178: 
 179:     clscfile();
 180:     if (*Ropt != '-' && xsflag >= 0)
 181:         xuucico(xsys);
 182:     cleanup(0);
 183: }
 184: 
 185: cleanup(code)
 186: int code;
 187: {
 188:     logcls();
 189:     rmlock(CNULL);
 190:     if (code)
 191:         fprintf(stderr, "uucp failed. code %d\n", code);
 192:     exit(code);
 193: }
 194: 
 195: 
 196: /*
 197:  *	generate copy files
 198:  *
 199:  *	return codes 0  |  FAIL
 200:  */
 201: 
 202: copy(s1, f1, s2, f2)
 203: register char *s1, *f1, *s2, *f2;
 204: {
 205:     int type, statret;
 206:     struct stat stbuf, stbuf1;
 207:     char dfile[NAMESIZE];
 208:     char file1[MAXFULLNAME], file2[MAXFULLNAME];
 209:     FILE *cfp, *gtcfile();
 210:     char opts[100];
 211: 
 212:     type = 0;
 213:     opts[0] = '\0';
 214:     strcpy(file1, f1);
 215:     strcpy(file2, f2);
 216:     if (strcmp(s1, Myname) != SAME)
 217:         type = 1;
 218:     if (strcmp(s2, Myname) != SAME)
 219:         type += 2;
 220:     if (type & 01)
 221:         if ((index(f1, '*') != NULL
 222:           || index(f1, '?') != NULL
 223:           || index(f1, '[') != NULL))
 224:             type = 4;
 225: 
 226:     switch (type) {
 227:     case 0:
 228:         /* all work here */
 229:         DEBUG(4, "all work here %d\n", type);
 230:         if (ckexpf(file1))
 231:              return FAIL;
 232:         if (ckexpf(file2))
 233:              return FAIL;
 234:         if (stat(subfile(file1), &stbuf) != 0) {
 235:             fprintf(stderr, "can't get file status %s \n copy failed\n",
 236:               file1);
 237:             return SUCCESS;
 238:         }
 239:         statret = stat(subfile(file2), &stbuf1);
 240:         if (statret == 0
 241:           && stbuf.st_ino == stbuf1.st_ino
 242:           && stbuf.st_dev == stbuf1.st_dev) {
 243:             fprintf(stderr, "%s %s - same file; can't copy\n", file1, file2);
 244:             return SUCCESS;
 245:         }
 246:         if (chkpth(User, "", file1) != 0
 247:           || chkperm(file2, index(Optns, 'd'))
 248:           || chkpth(User, "", file2) != 0) {
 249:             fprintf(stderr, "permission denied\n");
 250:             cleanup(1);
 251:         }
 252:         if ((stbuf.st_mode & ANYREAD) == 0) {
 253:             fprintf(stderr, "can't read file (%s) mode (%o)\n",
 254:               file1, (int)stbuf.st_mode);
 255:             return FAIL;
 256:         }
 257:         if (statret == 0 && (stbuf1.st_mode & ANYWRITE) == 0) {
 258:             fprintf(stderr, "can't write file (%s) mode (%o)\n",
 259:               file2, (int)stbuf.st_mode);
 260:             return FAIL;
 261:         }
 262:         xcp(file1, file2);
 263:         logent("WORK HERE", "DONE");
 264:         return SUCCESS;
 265:     case 1:
 266:         /* receive file */
 267:         DEBUG(4, "receive file - %d\n", type);
 268:         chsys(s1);
 269:         if (file1[0] != '~')
 270:             if (ckexpf(file1))
 271:                  return FAIL;
 272:         if (ckexpf(file2))
 273:              return FAIL;
 274:         if (chkpth(User, "", file2) != 0) {
 275:             fprintf(stderr, "permission denied\n");
 276:             return FAIL;
 277:         }
 278:         if (Ename[0] != '\0') {
 279:             /* execute uux - remote uucp */
 280:             xuux(Ename, s1, file1, s2, file2, opts);
 281:             return SUCCESS;
 282:         }
 283: 
 284:         cfp = gtcfile(s1);
 285:         fprintf(cfp, "R %s %s %s %s\n", file1, file2, User, Optns);
 286:         break;
 287:     case 2:
 288:         /* send file */
 289:         if (ckexpf(file1))
 290:              return FAIL;
 291:         if (file2[0] != '~')
 292:             if (ckexpf(file2))
 293:                  return FAIL;
 294:         DEBUG(4, "send file - %d\n", type);
 295:         chsys(s2);
 296: 
 297:         if (chkpth(User, "", file1) != 0) {
 298:             fprintf(stderr, "permission denied %s\n", file1);
 299:             return FAIL;
 300:         }
 301:         if (stat(subfile(file1), &stbuf) != 0) {
 302:             fprintf(stderr, "can't get status for file %s\n", file1);
 303:             return FAIL;
 304:         }
 305:         if ((stbuf.st_mode & S_IFMT) == S_IFDIR) {
 306:             fprintf(stderr, "directory name illegal - %s\n",
 307:               file1);
 308:             return FAIL;
 309:         }
 310:         if ((stbuf.st_mode & ANYREAD) == 0) {
 311:             fprintf(stderr, "can't read file (%s) mode (%o)\n",
 312:               file1, (int)stbuf.st_mode);
 313:             return FAIL;
 314:         }
 315:         if ((Nuser[0] != '\0') && (index(Optns, 'n') == NULL))
 316:             strcat(Optns, "n");
 317:         if (Ename[0] != '\0') {
 318:             /* execute uux - remote uucp */
 319:             if (Nuser[0] != '\0')
 320:                 sprintf(opts, "-n%s", Nuser);
 321:             xuux(Ename, s1, file1, s2, file2, opts);
 322:             return SUCCESS;
 323:         }
 324:         Nbytes +=  stbuf.st_size;
 325:         if (Copy) {
 326:             gename(DATAPRE, Myname, Grade, dfile);
 327:             if (xcp(file1, dfile) != 0) {
 328:                 fprintf(stderr, "can't copy %s\n", file1);
 329:                 return FAIL;
 330:             }
 331:         }
 332:         else {
 333:             /* make a dummy D. name */
 334:             /* cntrl.c knows names < 6 chars are dummy D. files */
 335:             strcpy(dfile, "D.0");
 336:         }
 337:         cfp = gtcfile(s2);
 338:         fprintf(cfp, "S %s %s %s %s %s %o %s\n", file1, file2,
 339:             User, Optns, dfile, (int)stbuf.st_mode & 0777, Nuser);
 340:         break;
 341:     case 3:
 342:     case 4:
 343:         /*  send uucp command for execution on s1  */
 344:         DEBUG(4, "send uucp command - %d\n", type);
 345:         chsys(s1);
 346:         if (strcmp(s2,  Myname) == SAME) {
 347:             if (ckexpf(file2))
 348:                  return FAIL;
 349:             if (chkpth(User, "", file2) != 0) {
 350:                 fprintf(stderr, "permission denied\n");
 351:                 return FAIL;
 352:             }
 353:         }
 354:         if (Ename[0] != '\0') {
 355:             /* execute uux - remote uucp */
 356:             xuux(Ename, s1, file1, s2, file2, opts);
 357:             return SUCCESS;
 358:         }
 359:         cfp = gtcfile(s1);
 360:         fprintf(cfp, "X %s %s!%s %s %s\n", file1, s2, file2, User, Optns);
 361:         break;
 362:     }
 363:     return SUCCESS;
 364: }
 365: 
 366: /*
 367:  *	execute uux for remote uucp
 368:  *
 369:  *	return code - none
 370:  */
 371: 
 372: xuux(ename, s1, f1, s2, f2, opts)
 373: char *ename, *s1, *s2, *f1, *f2, *opts;
 374: {
 375:     char cmd[200];
 376: 
 377:     DEBUG(4, "Ropt(%s) ", Ropt);
 378:     DEBUG(4, "ename(%s) ", ename);
 379:     DEBUG(4, "s1(%s) ", s1);
 380:     DEBUG(4, "f1(%s) ", f1);
 381:     DEBUG(4, "s2(%s) ", s2);
 382:     DEBUG(4, "f2(%s)\n", f2);
 383:     sprintf(cmd, "uux %s %s!uucp %s %s!%s \\(%s!%s\\)",
 384:      Ropt, ename, opts,  s1, f1, s2, f2);
 385:     DEBUG(4, "cmd (%s)\n", cmd);
 386:     system(cmd);
 387:     return;
 388: }
 389: 
 390: FILE *Cfp = NULL;
 391: char Cfile[NAMESIZE];
 392: 
 393: /*
 394:  *	get a Cfile descriptor
 395:  *
 396:  *	return an open file descriptor
 397:  */
 398: 
 399: FILE *
 400: gtcfile(sys)
 401: register char *sys;
 402: {
 403:     static char presys[8] = "";
 404:     static int cmdcount = 0;
 405:     register int savemask;
 406: 
 407:     if (strcmp(presys, sys) != SAME  /* this is !SAME on first call */
 408:       || Nbytes > MAXBYTES
 409:       || ++cmdcount > MAXCOUNT) {
 410:         cmdcount = 1;
 411:         Nbytes = 0;
 412:         if (presys[0] != '\0') {
 413:             clscfile();
 414:         }
 415:         gename(CMDPRE, sys, Grade, Cfile);
 416: #ifdef VMS
 417:         savemask = umask(~0600); /* vms must have read permission */
 418: #else !VMS
 419:         savemask = umask(~0200);
 420: #endif !VMS
 421:         Cfp = fopen(subfile(Cfile), "w");
 422:         umask(savemask);
 423:         ASSERT(Cfp != NULL, CANTOPEN, Cfile, 0);
 424:         strcpy(presys, sys);
 425:     }
 426:     return Cfp;
 427: }
 428: 
 429: /*
 430:  *	close cfile
 431:  *
 432:  *	return code - none
 433:  */
 434: 
 435: clscfile()
 436: {
 437:     if (Cfp == NULL)
 438:         return;
 439:     fclose(Cfp);
 440:     chmod(subfile(Cfile), ~WFMASK & 0777);
 441:     logent(Cfile, "QUE'D");
 442:     US_CRS(Cfile);
 443:     Cfp = NULL;
 444: }
 445: 
 446: /*
 447:  * compile a list of all systems we are referencing
 448:  */
 449: chsys(s1)
 450: register char *s1;
 451: {
 452:     if (xsflag < 0)
 453:         xsflag = 0;
 454:     else if (xsflag > 0)
 455:         return;
 456: 
 457:     if (xsys[0] == '\0') {
 458:         strncpy(xsys, s1, MAXBASENAME);
 459:         return;
 460:     }
 461: 
 462:     if (strncmp(xsys, s1, MAXBASENAME) == SAME)
 463:         return;
 464: 
 465:     xsflag++;
 466:     xsys[0] = '\0';
 467: }

Defined functions

Defined variables

Defined macros