stable version that works.

[unix-history] / usr / src / usr.bin / rdist / docmd.c

#ifndef lint
static  char *sccsid = "@(#)docmd.c     4.3 (Berkeley) 83/10/10";
#endif

#include "defs.h"

FILE    *lfp;           /* log file for recording files updated */

/*
* Process commands for sending files to other machines.
*/
dohcmds(files, hosts, cmds)
       struct block *files, *hosts, *cmds;
{
       register struct block *h, *f, *c;
       register char **cpp;
       int n, ddir;

       if (debug)
               printf("dohcmds(%x, %x, %x)\n", files, hosts, cmds);

       files = expand(files, 0);
       hosts = expand(hosts, 1);
       if (files == NULL)
               fatal("no files to be updated\n");
       if (hosts == NULL)
               fatal("empty list of hosts to be updated\n");
       except = cmds;
       ddir = files->b_next != NULL;

       for (h = hosts; h != NULL; h = h->b_next) {
               if (!qflag)
                       printf("updating host %s\n", h->b_name);
               if (!nflag) {
                       if (!makeconn(h->b_name))
                               continue;
                       if ((lfp = fopen(tmpfile, "w")) == NULL) {
                               fatal("cannot open %s\n", tmpfile);
                               exit(1);
                       }
               }
               for (f = files; f != NULL; f = f->b_next) {
                       if (filec) {
                               for (cpp = filev; *cpp; cpp++)
                                       if (!strcmp(f->b_name, *cpp))
                                               goto found;
                               if (!nflag) {
                                       (void) fclose(lfp);
                               }
                               continue;
                       }
               found:
                       n = 0;
                       for (c = cmds; c != NULL; c = c->b_next)
                               if (c->b_type == INSTALL) {
                                       install(f->b_name, c->b_name, ddir, c->b_options);
                                       n++;
                               }
                       if (n == 0)
                               install(f->b_name, f->b_name, 0, 0);
               }
               if (!nflag) {
                       /* signal end of connection */
                       (void) write(rem, "\2\n", 2);
                       (void) close(rem);
                       (void) fclose(lfp);
               }
               for (c = cmds; c != NULL; c = c->b_next)
                       if (c->b_type == NOTIFY)
                               notify(tmpfile, h->b_name, c->b_args);
       }
       if (!nflag)
               (void) unlink(tmpfile);
}

/*
* Create a connection to the rdist server on the machine rhost.
*/
makeconn(rhost)
       char *rhost;
{
       register char *ruser;
       extern char user[];

       (void) sprintf(buf, "/usr/local/rdist -Server%s%s%s%s%s",
               vflag ? " -v" : "", qflag ? " -q" : "", nflag ? " -n" : "",
               yflag ? " -y" : "", debug ? " -D" : "");

       ruser = rindex(rhost, '.');
       if (ruser != NULL) {
               *ruser++ = '\0';
               if (!okname(ruser))
                       return(0);
       } else
               ruser = user;

       if (debug) {
               printf("makeconn(%s)\n", rhost);
               printf("luser = %s, ruser = %s\n", user, ruser);
               printf("buf = %s\n", buf);
       }

       fflush(stdout);
       rem = rcmd(&rhost, IPPORT_CMDSERVER, user, ruser, buf, 0);
       if (rem < 0)
               return(0);
       if (response() < 0)
               return(0);
       return(1);
}

/*
* Update the file(s) if they are different.
* destdir = 1 if destination should be a directory
* (i.e., more than one source is being copied to the same destination).
*/
install(src, dest, destdir, options)
       char *src, *dest;
       int destdir, options;
{
       register char *cp;

       if (exclude(src))
               return;

       if (nflag || debug) {
               printf("%s%s %s %s\n", options & VERIFY ? "verify" : "install",
                       options & WHOLE ? " -w" : "", src, dest);
               if (nflag)
                       return;
       }
       /*
        * Pass the destination file/directory name to remote.
        */
       (void) sprintf(buf, "%c%s\n", destdir ? 'T' : 't', dest);
       if (debug)
               printf("buf = %s", buf);
       (void) write(rem, buf, strlen(buf));

       if (!destdir && (options & WHOLE))
               options |= STRIP;
       sendf(src, NULL, options);
}

struct tstamp {
       time_t  lastmod;
       FILE    *tfp;
} ts[NSTAMPS];

int     nstamps;

extern char target[], *tp;

/*
* Process commands for comparing files to time stamp files.
*/
dofcmds(files, stamps, cmds)
       struct block *files, *stamps, *cmds;
{
       register struct block *b;
       register struct tstamp *t;
       register char **cpp;
       struct stat stb;
       extern char *tmpinc;

       if (debug)
               printf("dofcmds()\n");

       files = expand(files, 0);
       stamps = expand(stamps, 1);
       if (files == NULL)
               fatal("no files to be updated\n");
       if (stamps == NULL)
               fatal("empty time stamp file list\n");
       except = cmds;

       t = ts;
       nstamps = 0;
       for (b = stamps; b != NULL; b = b->b_next) {
               if (stat(b->b_name, &stb) < 0) {
                       error("%s: %s\n", b->b_name, sys_errlist[errno]);
                       continue;
               }
               if (++nstamps > NSTAMPS)
                       fatal("too many time stamp files in one command\n");
               if (debug)
                       printf("%s: %d\n", b->b_name, stb.st_mtime);
               t->lastmod = stb.st_mtime;
               if (!nflag && !vflag) {
                       if ((t->tfp = fopen(tmpfile, "w")) == NULL)
                               error("%s: %s\n", b->b_name, sys_errlist[errno]);
                       (*tmpinc)++;
               } else
                       t->tfp = NULL;
               t++;
       }
       for (b = files; b != NULL; b = b->b_next) {
               if (filec) {
                       for (cpp = filev; *cpp; cpp++)
                               if (!strcmp(b->b_name, *cpp))
                                       goto found;
                       continue;
               }
       found:
               tp = NULL;
               cmptime(b->b_name);
       }
       if (!nflag && !vflag)
               for (t = ts; t < &ts[nstamps]; t++)
                       if (t->tfp != NULL)
                               (void) fclose(t->tfp);
       *tmpinc = 'A';
       while (nstamps--) {
               for (b = cmds; b != NULL; b = b->b_next)
                       if (b->b_type == NOTIFY)
                               notify(tmpfile, NULL, b->b_args);
               if (!nflag && !vflag)
                       (void) unlink(tmpfile);
               (*tmpinc)++;
       }
}

/*
* Compare the mtime of file to the list of time stamps.
*/
cmptime(name)
       char *name;
{
       register struct tstamp *t;
       struct stat stb;

       if (debug)
               printf("cmptime(%s)\n", name);

       if (exclude(name))
               return;

       /*
        * first time cmptime() is called?
        */
       if (tp == NULL) {
               exptilde(target, name);
               tp = name = target;
               while (*tp)
                       tp++;
       }
       if (access(name, 4) < 0 || stat(name, &stb) < 0) {
               error("%s: %s\n", name, sys_errlist[errno]);
               return;
       }

       switch (stb.st_mode & S_IFMT) {
       case S_IFREG:
               break;

       case S_IFDIR:
               rcmptime(&stb);
               return;

       default:
               error("%s: not a plain file\n", name);
               return;
       }

       for (t = ts; t < &ts[nstamps]; t++) {
               if (stb.st_mtime <= t->lastmod)
                       return;
               log(t->tfp, "updating: %s\n", name);
       }
}

rcmptime(st)
       struct stat *st;
{
       register DIR *d;
       register struct direct *dp;
       register char *cp;
       char *otp;
       int len;

       if (debug)
               printf("rcmptime(%x)\n", st);

       if ((d = opendir(target)) == NULL) {
               error("%s: %s\n", target, sys_errlist[errno]);
               return;
       }
       otp = tp;
       len = tp - target;
       while (dp = readdir(d)) {
               if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
                       continue;
               if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) {
                       error("%s/%s: Name too long\n", target, dp->d_name);
                       continue;
               }
               tp = otp;
               *tp++ = '/';
               cp = dp->d_name;
               while (*tp++ = *cp++)
                       ;
               tp--;
               cmptime(target);
       }
       closedir(d);
       tp = otp;
       *tp = '\0';
}

/*
* Notify the list of people the changes that were made.
*/
notify(file, rhost, to)
       char *file, *rhost;
       register struct block *to;
{
       register int fd, len;
       FILE *pf, *popen();
       struct stat stb;

       if (vflag)
               return;
       if (!qflag) {
               printf("notify ");
               if (rhost)
                       printf("@%s ", rhost);
               prnames(to);
       }
       if (nflag)
               return;

       if ((fd = open(file, 0)) < 0) {
               error("%s: %s\n", file, sys_errlist[errno]);
               return;
       }
       if (fstat(fd, &stb) < 0) {
               error("%s: %s\n", file, sys_errlist[errno]);
               (void) close(fd);
               return;
       }
       if (stb.st_size == 0) {
               (void) close(fd);
               return;
       }
       /*
        * Create a pipe to mailling program.
        */
       pf = popen(MAILCMD, "w");
       if (pf == NULL) {
               error("notify: \"%s\" failed\n", MAILCMD);
               (void) close(fd);
               return;
       }
       /*
        * Output the proper header information.
        */
       fprintf(pf, "From: rdist (Remote distribution program)\n");
       fprintf(pf, "To:");
       while (to != NULL) {
               if (!any('@', to->b_name) && host != NULL)
                       fprintf(pf, " %s@%s", to->b_name, rhost);
               else
                       fprintf(pf, " %s", to->b_name);
               to = to->b_next;
       }
       putc('\n', pf);
       fprintf(pf, "Subject: files updated by rdist from %s to %s\n",
               host, rhost);
       putc('\n', pf);

       while ((len = read(fd, buf, BUFSIZ)) > 0)
               (void) fwrite(buf, 1, len, pf);
       (void) close(fd);
       (void) pclose(pf);
}

struct  block *except;          /* list of files to exclude */

/*
* Return true if name is in list.
*/
exclude(file)
       char *file;
{
       register struct block *b, *c;

       for (c = except; c != NULL; c = c->b_next) {
               if (c->b_type != EXCEPT)
                       continue;
               for (b = c->b_args; b != NULL; b = b->b_next)
                       if (!strcmp(file, b->b_name))
                               return(1);
       }
       return(0);
}

okname(name)
       register char *name;
{
       register char *cp = name;
       register int c;

       do {
               c = *cp;
               if (c & 0200)
                       goto bad;
               if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-')
                       goto bad;
               cp++;
       } while (*cp);
       return(1);
bad:
       error("invalid user name %s\n", name);
       return(0);
}

char *
colon(cp)
       register char *cp;
{

       while (*cp) {
               if (*cp == ':')
                       return(cp);
               if (*cp == '/')
                       return(0);
               cp++;
       }
       return(0);
}