sendmail -> paths.h
[unix-history] / usr / src / usr.bin / rdist / docmd.c
index 248ce8e..448c707 100644 (file)
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
 #ifndef lint
 #ifndef lint
-static char *sccsid = "@(#)docmd.c     4.1 (Berkeley) 83/09/07";
-#endif
+static char sccsid[] = "@(#)docmd.c    5.4 (Berkeley) %G%";
+#endif /* not lint */
 
 #include "defs.h"
 
 #include "defs.h"
+#include <setjmp.h>
+#include <netdb.h>
 
 
-FILE   *lfp;           /* log file for recording files updated */
+FILE   *lfp;                   /* log file for recording files updated */
+struct subcmd *subcmds;        /* list of sub-commands for current cmd */
+jmp_buf        env;
+
+int    cleanup();
+int    lostconn();
 
 /*
 
 /*
- * Routines to process commands.
+ * Do the commands in cmds (initialized by yyparse).
  */
  */
-docmd(files, hosts, cmds)
-       struct block *files, *hosts, *cmds;
+docmds(dhosts, argc, argv)
+       char **dhosts;
+       int argc;
+       char **argv;
 {
 {
-       register struct block *h, *f, *c;
-       register char *cp, **cpp;
-       int n;
+       register struct cmd *c;
+       register struct namelist *f;
+       register char **cpp;
+       extern struct cmd *cmds;
 
 
-       if (debug)
-               printf("docmd()\n");
-
-       files = expand(files);
-       hosts = expand(hosts);
-       if (files == NULL)
-               fatal("no files to be updated\n");
-       if (hosts == NULL)
-               fatal("empty list of hosts to be updated\n");
-       except = cmds;
-
-       for (h = hosts; h != NULL; h = h->b_next) {
-               if (!nflag) {
-                       if ((lfp = fopen(tmpfile, "w")) == NULL) {
-                               fatal("cannot open %s\n", tmpfile);
-                               exit(1);
-                       }
-                       if (!makeconn(h->b_name))
-                               continue;
+       signal(SIGHUP, cleanup);
+       signal(SIGINT, cleanup);
+       signal(SIGQUIT, cleanup);
+       signal(SIGTERM, cleanup);
+
+       for (c = cmds; c != NULL; c = c->c_next) {
+               if (dhosts != NULL && *dhosts != NULL) {
+                       for (cpp = dhosts; *cpp; cpp++)
+                               if (strcmp(c->c_name, *cpp) == 0)
+                                       goto fndhost;
+                       continue;
                }
                }
-               for (f = files; f != NULL; f = f->b_next) {
-                       if (filec) {
-                               for (cpp = filev; *cpp; cpp++)
-                                       if (!strcmp(f->b_name, *cpp))
+       fndhost:
+               if (argc) {
+                       for (cpp = argv; *cpp; cpp++) {
+                               if (c->c_label != NULL &&
+                                   strcmp(c->c_label, *cpp) == 0) {
+                                       cpp = NULL;
+                                       goto found;
+                               }
+                               for (f = c->c_files; f != NULL; f = f->n_next)
+                                       if (strcmp(f->n_name, *cpp) == 0)
                                                goto found;
                                                goto found;
-                               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, 0);
-                                       n++;
-                               } else if (c->b_type == VERIFY) {
-                                       install(f->b_name, c->b_name, 1);
-                                       n++;
-                               }
-                       if (n == 0)
-                               install(f->b_name, f->b_name, 0);
+                       continue;
+               } else
+                       cpp = NULL;
+       found:
+               switch (c->c_type) {
+               case ARROW:
+                       doarrow(cpp, c->c_files, c->c_name, c->c_cmds);
+                       break;
+               case DCOLON:
+                       dodcolon(cpp, c->c_files, c->c_name, c->c_cmds);
+                       break;
+               default:
+                       fatal("illegal command type %d\n", c->c_type);
                }
                }
-               if (!nflag) {
-                       (void) fclose(lfp);
-                       (void) close(rem);
+       }
+       closeconn();
+}
+
+/*
+ * Process commands for sending files to other machines.
+ */
+doarrow(filev, files, rhost, cmds)
+       char **filev;
+       struct namelist *files;
+       char *rhost;
+       struct subcmd *cmds;
+{
+       register struct namelist *f;
+       register struct subcmd *sc;
+       register char **cpp;
+       int n, ddir, opts = options;
+
+       if (debug)
+               printf("doarrow(%x, %s, %x)\n", files, rhost, cmds);
+
+       if (files == NULL) {
+               error("no files to be updated\n");
+               return;
+       }
+
+       subcmds = cmds;
+       ddir = files->n_next != NULL;   /* destination is a directory */
+       if (nflag)
+               printf("updating host %s\n", rhost);
+       else {
+               if (setjmp(env))
+                       goto done;
+               signal(SIGPIPE, lostconn);
+               if (!makeconn(rhost))
+                       return;
+               if ((lfp = fopen(tmpfile, "w")) == NULL) {
+                       fatal("cannot open %s\n", tmpfile);
+                       exit(1);
+               }
+       }
+       for (f = files; f != NULL; f = f->n_next) {
+               if (filev) {
+                       for (cpp = filev; *cpp; cpp++)
+                               if (strcmp(f->n_name, *cpp) == 0)
+                                       goto found;
+                       if (!nflag)
+                               (void) fclose(lfp);
+                       continue;
+               }
+       found:
+               n = 0;
+               for (sc = cmds; sc != NULL; sc = sc->sc_next) {
+                       if (sc->sc_type != INSTALL)
+                               continue;
+                       n++;
+                       install(f->n_name, sc->sc_name,
+                               sc->sc_name == NULL ? 0 : ddir, sc->sc_options);
+                       opts = sc->sc_options;
                }
                }
-               for (c = cmds; c != NULL; c = c->b_next)
-                       if (c->b_type == NOTIFY)
-                               notify(h->b_name, c->b_args);
+               if (n == 0)
+                       install(f->n_name, NULL, 0, options);
        }
        }
-       if (!nflag)
+done:
+       if (!nflag) {
+               (void) signal(SIGPIPE, cleanup);
+               (void) fclose(lfp);
+               lfp = NULL;
+       }
+       for (sc = cmds; sc != NULL; sc = sc->sc_next)
+               if (sc->sc_type == NOTIFY)
+                       notify(tmpfile, rhost, sc->sc_args, 0);
+       if (!nflag) {
                (void) unlink(tmpfile);
                (void) unlink(tmpfile);
+               for (; ihead != NULL; ihead = ihead->nextp) {
+                       free(ihead);
+                       if ((opts & IGNLNKS) || ihead->count == 0)
+                               continue;
+                       log(lfp, "%s: Warning: missing links\n",
+                               ihead->pathname);
+               }
+       }
 }
 
 /*
 }
 
 /*
@@ -74,103 +171,354 @@ docmd(files, hosts, cmds)
 makeconn(rhost)
        char *rhost;
 {
 makeconn(rhost)
        char *rhost;
 {
-       register char *ruser;
+       register char *ruser, *cp;
+       static char *cur_host = NULL;
+       static int port = -1;
+       char tuser[20];
+       int n;
        extern char user[];
        extern char user[];
+       extern int userid;
 
 
-       (void) sprintf(buf, "/usr/local/rdist -Server%s%s%s%s%s",
-               vflag ? " -v" : "", qflag ? " -q" : "", nflag ? " -n" : "",
-               yflag ? " -y" : "", debug ? " -d" : "");
+       if (debug)
+               printf("makeconn(%s)\n", rhost);
 
 
-       ruser = rindex(rhost, '.');
-       if (ruser != NULL) {
-               *ruser++ = '\0';
-               if (!okname(ruser))
+       if (cur_host != NULL && rem >= 0) {
+               if (strcmp(cur_host, rhost) == 0)
+                       return(1);
+               closeconn();
+       }
+       cur_host = rhost;
+       cp = index(rhost, '@');
+       if (cp != NULL) {
+               char c = *cp;
+
+               *cp = '\0';
+               strncpy(tuser, rhost, sizeof(tuser)-1);
+               *cp = c;
+               rhost = cp + 1;
+               ruser = tuser;
+               if (*ruser == '\0')
+                       ruser = user;
+               else if (!okname(ruser))
                        return(0);
        } else
                ruser = user;
                        return(0);
        } else
                ruser = user;
+       if (!qflag)
+               printf("updating host %s\n", rhost);
+       (void) sprintf(buf, "%s -Server%s", _PATH_RDIST, qflag ? " -q" : "");
+       if (port < 0) {
+               struct servent *sp;
+
+               if ((sp = getservbyname("shell", "tcp")) == NULL)
+                       fatal("shell/tcp: unknown service");
+               port = sp->s_port;
+       }
 
        if (debug) {
 
        if (debug) {
-               printf("makeconn(%s)\n", rhost);
-               printf("luser = %s, ruser = %s\n", user, ruser);
+               printf("port = %d, luser = %s, ruser = %s\n", ntohs(port), user, ruser);
                printf("buf = %s\n", buf);
        }
 
                printf("buf = %s\n", buf);
        }
 
-       rem = rcmd(&rhost, IPPORT_CMDSERVER, user, ruser, buf, 0);
+       fflush(stdout);
+       setreuid(userid, 0);
+       rem = rcmd(&rhost, port, user, ruser, buf, 0);
+       setreuid(0, userid);
        if (rem < 0)
                return(0);
        if (rem < 0)
                return(0);
-       if (response() < 0)
-               return(0);
+       cp = buf;
+       if (read(rem, cp, 1) != 1)
+               lostconn();
+       if (*cp == 'V') {
+               do {
+                       if (read(rem, cp, 1) != 1)
+                               lostconn();
+               } while (*cp++ != '\n' && cp < &buf[BUFSIZ]);
+               *--cp = '\0';
+               cp = buf;
+               n = 0;
+               while (*cp >= '0' && *cp <= '9')
+                       n = (n * 10) + (*cp++ - '0');
+               if (*cp == '\0' && n == VERSION)
+                       return(1);
+               error("connection failed: version numbers don't match (local %d, remote %d)\n", VERSION, n);
+       } else
+               error("connection failed: version numbers don't match\n");
+       closeconn();
+       return(0);
+}
+
+/*
+ * Signal end of previous connection.
+ */
+closeconn()
+{
+       if (debug)
+               printf("closeconn()\n");
+
+       if (rem >= 0) {
+               (void) write(rem, "\2\n", 2);
+               (void) close(rem);
+               rem = -1;
+       }
+}
+
+lostconn()
+{
+       if (iamremote)
+               cleanup();
+       log(lfp, "rdist: lost connection\n");
+       longjmp(env, 1);
+}
+
+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);
        return(1);
+bad:
+       error("invalid user name %s\n", name);
+       return(0);
 }
 
 }
 
+time_t lastmod;
+FILE   *tfp;
+extern char target[], *tp;
+
 /*
 /*
- * Update the file(s) if they are different.
+ * Process commands for comparing files to time stamp files.
  */
  */
-install(src, dest, verify)
-       char *src, *dest;
-       int verify;
+dodcolon(filev, files, stamp, cmds)
+       char **filev;
+       struct namelist *files;
+       char *stamp;
+       struct subcmd *cmds;
 {
 {
-       register char *cp;
-       extern char *tp;
-       char lbuf[BUFSIZ];
+       register struct subcmd *sc;
+       register struct namelist *f;
+       register char **cpp;
+       struct timeval tv[2];
+       struct timezone tz;
+       struct stat stb;
 
 
-       if (!qflag)
-               printf("%s %s %s\n", verify ? "verify" : "install", src, dest);
-       if (nflag)
+       if (debug)
+               printf("dodcolon()\n");
+
+       if (files == NULL) {
+               error("no files to be updated\n");
                return;
                return;
+       }
+       if (stat(stamp, &stb) < 0) {
+               error("%s: %s\n", stamp, sys_errlist[errno]);
+               return;
+       }
+       if (debug)
+               printf("%s: %d\n", stamp, stb.st_mtime);
+
+       subcmds = cmds;
+       lastmod = stb.st_mtime;
+       if (nflag || (options & VERIFY))
+               tfp = NULL;
+       else {
+               if ((tfp = fopen(tmpfile, "w")) == NULL) {
+                       error("%s: %s\n", stamp, sys_errlist[errno]);
+                       return;
+               }
+               (void) gettimeofday(&tv[0], &tz);
+               tv[1] = tv[0];
+               (void) utimes(stamp, tv);
+       }
+
+       for (f = files; f != NULL; f = f->n_next) {
+               if (filev) {
+                       for (cpp = filev; *cpp; cpp++)
+                               if (strcmp(f->n_name, *cpp) == 0)
+                                       goto found;
+                       continue;
+               }
+       found:
+               tp = NULL;
+               cmptime(f->n_name);
+       }
+
+       if (tfp != NULL)
+               (void) fclose(tfp);
+       for (sc = cmds; sc != NULL; sc = sc->sc_next)
+               if (sc->sc_type == NOTIFY)
+                       notify(tmpfile, NULL, sc->sc_args, lastmod);
+       if (!nflag && !(options & VERIFY))
+               (void) unlink(tmpfile);
+}
+
+/*
+ * Compare the mtime of file to the list of time stamps.
+ */
+cmptime(name)
+       char *name;
+{
+       struct stat stb;
+
+       if (debug)
+               printf("cmptime(%s)\n", name);
+
+       if (except(name))
+               return;
+
+       if (nflag) {
+               printf("comparing dates: %s\n", name);
+               return;
+       }
+
        /*
        /*
-        * Pass the destination file/directory name to remote.
+        * first time cmptime() is called?
         */
         */
-       (void) sprintf(buf, "T%s\n", dest);
+       if (tp == NULL) {
+               if (exptilde(target, name) == NULL)
+                       return;
+               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;
+       }
+
+       if (stb.st_mtime > lastmod)
+               log(tfp, "new: %s\n", name);
+}
+
+rcmptime(st)
+       struct stat *st;
+{
+       register DIR *d;
+       register struct direct *dp;
+       register char *cp;
+       char *otp;
+       int len;
+
        if (debug)
        if (debug)
-               printf("buf = %s", buf);
-       (void) write(rem, buf, strlen(buf));
-       tp = NULL;
-       shexpand(lbuf, src);
-       sendf(lbuf, verify);
+               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 the list of people the changes that were made.
+ * rhost == NULL if we are mailing a list of changes compared to at time
+ * stamp file.
  */
  */
-notify(host, to)
-       char *host;
-       register struct block *to;
+notify(file, rhost, to, lmod)
+       char *file, *rhost;
+       register struct namelist *to;
+       time_t lmod;
 {
        register int fd, len;
        FILE *pf, *popen();
        struct stat stb;
 
 {
        register int fd, len;
        FILE *pf, *popen();
        struct stat stb;
 
-       if (vflag)
+       if ((options & VERIFY) || to == NULL)
                return;
        if (!qflag) {
                return;
        if (!qflag) {
-               printf("notify @%s ", host);
+               printf("notify ");
+               if (rhost)
+                       printf("@%s ", rhost);
                prnames(to);
        }
        if (nflag)
                return;
 
                prnames(to);
        }
        if (nflag)
                return;
 
-       if ((fd = open(tmpfile, 0)) < 0) {
-               error("%s: %s\n", tmpfile, sys_errlist[errno]);
+       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.
         */
                return;
        }
        /*
         * Create a pipe to mailling program.
         */
-       pf = popen(MAILCMD, "w");
-       if (pf == NULL)
-               fatal("notify: \"%s\" failed\n", MAILCMD);
+       (void)sprintf(buf, "%s -oi -t", _PATH_SENDMAIL);
+       pf = popen(buf, "w");
+       if (pf == NULL) {
+               error("notify: \"%s\" failed\n", _PATH_SENDMAIL);
+               (void) close(fd);
+               return;
+       }
        /*
         * Output the proper header information.
         */
        fprintf(pf, "From: rdist (Remote distribution program)\n");
        fprintf(pf, "To:");
        /*
         * Output the proper header information.
         */
        fprintf(pf, "From: rdist (Remote distribution program)\n");
        fprintf(pf, "To:");
+       if (!any('@', to->n_name) && rhost != NULL)
+               fprintf(pf, " %s@%s", to->n_name, rhost);
+       else
+               fprintf(pf, " %s", to->n_name);
+       to = to->n_next;
        while (to != NULL) {
        while (to != NULL) {
-               fprintf(pf, " %s@%s", to->b_name, host);
-               to = to->b_next;
+               if (!any('@', to->n_name) && rhost != NULL)
+                       fprintf(pf, ", %s@%s", to->n_name, rhost);
+               else
+                       fprintf(pf, ", %s", to->n_name);
+               to = to->n_next;
        }
        putc('\n', pf);
        }
        putc('\n', pf);
-       fprintf(pf, "Subject: files updated by rdist\n");
+       if (rhost != NULL)
+               fprintf(pf, "Subject: files updated by rdist from %s to %s\n",
+                       host, rhost);
+       else
+               fprintf(pf, "Subject: files updated after %s\n", ctime(&lmod));
        putc('\n', pf);
 
        while ((len = read(fd, buf, BUFSIZ)) > 0)
        putc('\n', pf);
 
        while ((len = read(fd, buf, BUFSIZ)) > 0)
@@ -179,43 +527,47 @@ notify(host, to)
        (void) pclose(pf);
 }
 
        (void) pclose(pf);
 }
 
-struct block *except;          /* list of files to exclude */
-
 /*
 /*
- * Return true if name is in list.
+ * Return true if name is in the list.
  */
  */
-exclude(file)
+inlist(list, file)
+       struct namelist *list;
        char *file;
 {
        char *file;
 {
-       register struct block *b, *c;
+       register struct namelist *nl;
 
 
-       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);
-       }
+       for (nl = list; nl != NULL; nl = nl->n_next)
+               if (!strcmp(file, nl->n_name))
+                       return(1);
        return(0);
 }
 
        return(0);
 }
 
-okname(name)
-       register char *name;
+/*
+ * Return TRUE if file is in the exception list.
+ */
+except(file)
+       char *file;
 {
 {
-       register char *cp = name;
-       register int c;
+       register struct subcmd *sc;
+       register struct namelist *nl;
 
 
-       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);
+       if (debug)
+               printf("except(%s)\n", file);
+
+       for (sc = subcmds; sc != NULL; sc = sc->sc_next) {
+               if (sc->sc_type != EXCEPT && sc->sc_type != PATTERN)
+                       continue;
+               for (nl = sc->sc_args; nl != NULL; nl = nl->n_next) {
+                       if (sc->sc_type == EXCEPT) {
+                               if (!strcmp(file, nl->n_name))
+                                       return(1);
+                               continue;
+                       }
+                       re_comp(nl->n_name);
+                       if (re_exec(file) > 0)
+                               return(1);
+               }
+       }
        return(0);
 }
 
        return(0);
 }