4.3BSD-Reno/src/usr.bin/uucp/uucp.c
#ifndef lint
static char sccsid[] = "@(#)uucp.c 5.8 (Berkeley) 4/24/88";
#endif
#include "uucp.h"
#include <sys/stat.h>
#include "uust.h"
/*
* uucp command
*/
int Uid;
char *Ropt = " ";
char Path[100], Optns[10], Ename[MAXBASENAME+1];
char Grade = 'n';
#ifdef DONTCOPY
int Copy = 0;
#else !DONTCOPY
int Copy = 1;
#endif !DONTCOPY
char Nuser[32];
struct timeb Now;
/* variables used to check if talking to more than one system. */
int xsflag = -1;
char xsys[MAXBASENAME+1];
long Nbytes = 0;
#define MAXBYTES 50000 /* maximun number of bytes of data per C. file */
#define MAXCOUNT 15 /* maximun number of files per C. file */
main(argc, argv)
int argc;
char **argv;
{
char *sysfile1, *sysfl2;
register char *cp;
char file1[MAXFULLNAME], file2[MAXFULLNAME];
int avoidgwd = 0, c;
extern char *optarg;
extern int optind;
strcpy(Progname, "uucp");
uucpname(Myname);
umask(WFMASK);
Optns[0] = '-';
Optns[1] = 'd';
#ifdef DONTCOPY
Optns[2] = 'c';
#else !DONTCOPY
Optns[2] = 'C';
#endif !DONTCOPY
Ename[0] = Nuser[0] = Optns[3] = '\0';
while((c = getopt(argc, argv, "aCcdfe:g:mn:rs:x:")) != EOF)
switch(c) {
case 'a':
/* efficiency hack; avoid gwd call */
avoidgwd = 1;
break;
case 'C':
Copy = 1;
Optns[2] = 'C';
break;
case 'c':
Copy = 0;
Optns[2] = 'c';
break;
case 'd':
break;
case 'f':
Optns[1] = 'f';
break;
case 'e':
strncpy(Ename, optarg, MAXBASENAME);
break;
case 'g':
Grade = *optarg;
break;
case 'm':
strcat(Optns, "m");
break;
case 'n':
sprintf(Nuser, "%.31s", optarg);
break;
case 'r':
Ropt = argv[optind-1];
break;
case 's':
Spool = optarg;
break;
case 'x':
chkdebug();
Debug = atoi(optarg);
if (Debug <= 0)
Debug = 1;
fprintf(stderr, "DEBUG %d\n", Debug);
break;
case '?':
default:
fprintf(stderr, "unknown flag %s\n", argv[optind-1]);
break;
}
DEBUG(4, "\n\n** %s **\n", "START");
if (!avoidgwd) {
cp = getwd(Wrkdir);
if (cp == NULL) {
syslog(LOG_WARNING, "getwd failed");
cleanup(1);
}
}
if (subchdir(Spool) < 0) {
syslog(LOG_WARNING, "chdir(%s) failed: %m", Spool);
cleanup(1);
}
Uid = getuid();
if (guinfo(Uid, User, Path) != SUCCESS) {
syslog(LOG_WARNING, "Can't find username for uid %d", Uid);
DEBUG(1, "Using username", "uucp");
strcpy(User, "uucp");
}
DEBUG(4, "UID %d, ", Uid);
DEBUG(4, "User %s,", User);
DEBUG(4, "Ename (%s) ", Ename);
DEBUG(4, "PATH %s\n", Path);
if (optind > (argc-2)) {
fprintf(stderr, "usage: uucp [flags] from... to\n");
cleanup(1);
}
/* set up "to" system and file names */
if ((cp = index(argv[--argc], '!')) != NULL) {
sysfl2 = argv[argc];
*cp = '\0';
if (*sysfl2 == '\0')
sysfl2 = Myname;
else
strncpy(Rmtname, sysfl2, MAXBASENAME);
if (versys(&sysfl2) != 0) {
fprintf(stderr, "bad system name: %s\n", sysfl2);
cleanup(1);
}
if (Rmtname[0] != '\0')
strncpy(Rmtname, sysfl2, MAXBASENAME);
/* block multi-hop requests immediately */
if (index(cp+1, '!') != NULL) {
fprintf(stderr, "uucp handles only adjacent sites.\n");
fprintf(stderr, "Try uusend for multi-hop delivery.\n");
cleanup(1);
}
strcpy(file2, cp + 1);
} else {
sysfl2 = Myname;
strcpy(file2, argv[argc]);
}
if (strlen(sysfl2) > MAXBASENAME)
sysfl2[MAXBASENAME] = '\0';
/* do each from argument */
while (optind < argc) {
if ((cp = index(argv[optind], '!')) != NULL) {
sysfile1 = argv[optind];
*cp = '\0';
if (strlen(sysfile1) > MAXBASENAME)
sysfile1[MAXBASENAME] = '\0';
if (*sysfile1 == '\0')
sysfile1 = Myname;
else
strncpy(Rmtname, sysfile1, MAXBASENAME);
if (versys(&sysfile1) != 0) {
fprintf(stderr, "bad system name: %s\n", sysfile1);
cleanup(1);
}
if (Rmtname[0] != '\0')
strncpy(Rmtname, sysfl2, MAXBASENAME);
strcpy(file1, cp + 1);
} else {
sysfile1 = Myname;
strcpy(file1, argv[optind]);
}
DEBUG(4, "file1 - %s\n", file1);
copy(sysfile1, file1, sysfl2, file2);
optind++;
}
clscfile();
if (*Ropt != '-' && xsflag >= 0)
xuucico(xsys);
cleanup(0);
}
cleanup(code)
int code;
{
logcls();
rmlock(CNULL);
if (code)
fprintf(stderr, "uucp failed. code %d\n", code);
exit(code);
}
/*
* generate copy files
*
* return codes 0 | FAIL
*/
copy(s1, f1, s2, f2)
register char *s1, *f1, *s2, *f2;
{
int type, statret;
struct stat stbuf, stbuf1;
char dfile[NAMESIZE];
char file1[MAXFULLNAME], file2[MAXFULLNAME];
FILE *cfp, *gtcfile();
char opts[100];
type = 0;
opts[0] = '\0';
strcpy(file1, f1);
strcpy(file2, f2);
if (strcmp(s1, Myname) != SAME)
type = 1;
if (strcmp(s2, Myname) != SAME)
type += 2;
if (type & 01)
if ((index(f1, '*') != NULL
|| index(f1, '?') != NULL
|| index(f1, '[') != NULL))
type = 4;
switch (type) {
case 0:
/* all work here */
DEBUG(4, "all work here %d\n", type);
if (ckexpf(file1))
return FAIL;
if (ckexpf(file2))
return FAIL;
if (stat(subfile(file1), &stbuf) != 0) {
fprintf(stderr, "can't get file status %s \n copy failed\n",
file1);
return SUCCESS;
}
statret = stat(subfile(file2), &stbuf1);
if (statret == 0
&& stbuf.st_ino == stbuf1.st_ino
&& stbuf.st_dev == stbuf1.st_dev) {
fprintf(stderr, "%s %s - same file; can't copy\n", file1, file2);
return SUCCESS;
}
if (chkpth(User, "", file1) != 0
|| chkperm(file2, index(Optns, 'd'))
|| chkpth(User, "", file2) != 0) {
fprintf(stderr, "permission denied\n");
cleanup(1);
}
if ((stbuf.st_mode & ANYREAD) == 0) {
fprintf(stderr, "can't read file (%s) mode (%o)\n",
file1, (int)stbuf.st_mode);
return FAIL;
}
if (statret == 0 && (stbuf1.st_mode & ANYWRITE) == 0) {
fprintf(stderr, "can't write file (%s) mode (%o)\n",
file2, (int)stbuf.st_mode);
return FAIL;
}
xcp(file1, file2);
/* With odd umask() might not be able to read it himself */
(void) chmod(file2, 0666);
logent("WORK HERE", "DONE");
return SUCCESS;
case 1:
/* receive file */
DEBUG(4, "receive file - %d\n", type);
chsys(s1);
if (file1[0] != '~')
if (ckexpf(file1))
return FAIL;
if (ckexpf(file2))
return FAIL;
if (chkpth(User, "", file2) != 0) {
fprintf(stderr, "permission denied\n");
return FAIL;
}
if (Ename[0] != '\0') {
/* execute uux - remote uucp */
xuux(Ename, s1, file1, s2, file2, opts);
return SUCCESS;
}
cfp = gtcfile(s1);
fprintf(cfp, "R %s %s %s %s\n", file1, file2, User, Optns);
break;
case 2:
/* send file */
if (ckexpf(file1))
return FAIL;
if (file2[0] != '~')
if (ckexpf(file2))
return FAIL;
DEBUG(4, "send file - %d\n", type);
chsys(s2);
if (chkpth(User, "", file1) != 0) {
fprintf(stderr, "permission denied %s\n", file1);
return FAIL;
}
if (stat(subfile(file1), &stbuf) != 0) {
fprintf(stderr, "can't get status for file %s\n", file1);
return FAIL;
}
if ((stbuf.st_mode & S_IFMT) == S_IFDIR) {
fprintf(stderr, "directory name illegal - %s\n",
file1);
return FAIL;
}
if ((stbuf.st_mode & ANYREAD) == 0) {
fprintf(stderr, "can't read file (%s) mode (%o)\n",
file1, (int)stbuf.st_mode);
return FAIL;
}
if ((Nuser[0] != '\0') && (index(Optns, 'n') == NULL))
strcat(Optns, "n");
if (Ename[0] != '\0') {
/* execute uux - remote uucp */
if (Nuser[0] != '\0')
sprintf(opts, "-n%s", Nuser);
xuux(Ename, s1, file1, s2, file2, opts);
return SUCCESS;
}
Nbytes += stbuf.st_size;
if (Copy) {
gename(DATAPRE, Myname, Grade, dfile);
if (xcp(file1, dfile) != 0) {
fprintf(stderr, "can't copy %s\n", file1);
return FAIL;
}
}
else {
/* make a dummy D. name */
/* cntrl.c knows names < 6 chars are dummy D. files */
strcpy(dfile, "D.0");
}
cfp = gtcfile(s2);
fprintf(cfp, "S %s %s %s %s %s %o %s\n", file1, file2,
User, Optns, dfile, (int)stbuf.st_mode & 0777, Nuser);
break;
case 3:
case 4:
/* send uucp command for execution on s1 */
DEBUG(4, "send uucp command - %d\n", type);
chsys(s1);
if (strcmp(s2, Myname) == SAME) {
if (ckexpf(file2))
return FAIL;
if (chkpth(User, "", file2) != 0) {
fprintf(stderr, "permission denied\n");
return FAIL;
}
}
if (Ename[0] != '\0') {
/* execute uux - remote uucp */
xuux(Ename, s1, file1, s2, file2, opts);
return SUCCESS;
}
cfp = gtcfile(s1);
fprintf(cfp, "X %s %s!%s %s %s\n", file1, s2, file2, User, Optns);
break;
}
return SUCCESS;
}
/*
* execute uux for remote uucp
*
* return code - none
*/
xuux(ename, s1, f1, s2, f2, opts)
char *ename, *s1, *s2, *f1, *f2, *opts;
{
char cmd[200];
DEBUG(4, "Ropt(%s) ", Ropt);
DEBUG(4, "ename(%s) ", ename);
DEBUG(4, "s1(%s) ", s1);
DEBUG(4, "f1(%s) ", f1);
DEBUG(4, "s2(%s) ", s2);
DEBUG(4, "f2(%s)\n", f2);
sprintf(cmd, "uux %s %s!uucp %s %s!%s \\(%s!%s\\)",
Ropt, ename, opts, s1, f1, s2, f2);
DEBUG(4, "cmd (%s)\n", cmd);
system(cmd);
return;
}
FILE *Cfp = NULL;
char Cfile[NAMESIZE];
/*
* get a Cfile descriptor
*
* return an open file descriptor
*/
FILE *
gtcfile(sys)
register char *sys;
{
static char presys[8] = "";
static int cmdcount = 0;
register int savemask;
if (strcmp(presys, sys) != SAME /* this is !SAME on first call */
|| Nbytes > MAXBYTES
|| ++cmdcount > MAXCOUNT) {
cmdcount = 1;
Nbytes = 0;
if (presys[0] != '\0') {
clscfile();
}
gename(CMDPRE, sys, Grade, Cfile);
#ifdef VMS
savemask = umask(~0600); /* vms must have read permission */
#else !VMS
savemask = umask(~0200);
#endif !VMS
Cfp = fopen(subfile(Cfile), "w");
umask(savemask);
if (Cfp == NULL) {
syslog(LOG_WARNING, "fopen(%s) failed: %m",
subfile(Cfile));
cleanup(1);
}
strcpy(presys, sys);
}
return Cfp;
}
/*
* close cfile
*
* return code - none
*/
clscfile()
{
if (Cfp == NULL)
return;
fclose(Cfp);
chmod(subfile(Cfile), ~WFMASK & 0777);
logent(Cfile, "QUE'D");
US_CRS(Cfile);
Cfp = NULL;
}
/*
* compile a list of all systems we are referencing
*/
chsys(s1)
register char *s1;
{
if (xsflag < 0)
xsflag = 0;
else if (xsflag > 0)
return;
if (xsys[0] == '\0') {
strncpy(xsys, s1, MAXBASENAME);
return;
}
if (strncmp(xsys, s1, MAXBASENAME) == SAME)
return;
xsflag++;
xsys[0] = '\0';
}