+static char sccsid[] = "%W% (Berkeley) %G%";
+
+#include "uucp.h"
+#include "uucpdefs.h"
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <dir.h>
+
+#define APPCMD(d) {\
+char *p;\
+for (p = d; *p != '\0';) *cmdp++ = *p++;\
+*cmdp++ = ' ';\
+*cmdp = '\0';}
+
+/*
+ * uuxqt will execute commands set up by a uux command,
+ * usually from a remote machine - set by uucp.
+ */
+
+char *Cmds[] = {
+ "rmail",
+ "rnews",
+ "uusend",
+ "cp",
+ "vpr",
+ "w",
+ "fsend",
+ "finger",
+ "fget",
+ NULL
+ };
+int notiok = 1;
+int nonzero = 0;
+#define PATH "PATH=/bin:/usr/bin; export PATH; "
+/* to remove restrictions from uuxqt
+ * define ALLOK 1
+ *
+ * to add allowable commands, add to the list under Cmds[]
+ */
+
+main(argc, argv)
+char *argv[];
+{
+ char xcmd[100];
+ int cmdnok;
+ char xfile[MAXFULLNAME], user[32], buf[BUFSIZ];
+ char lbuf[30];
+ char cfile[NAMESIZE], dfile[MAXFULLNAME];
+ char file[NAMESIZE];
+ char fin[MAXFULLNAME], sysout[NAMESIZE], fout[MAXFULLNAME];
+ FILE *xfp, *dfp, *fp;
+ char path[MAXFULLNAME];
+ char cmd[BUFSIZ];
+ char *cmdp, prm[BUFSIZ], *ptr;
+ char *getprm();
+ int uid, ret;
+ int stcico = 0;
+ char retstat[40];
+
+ uucpname(Myname);
+ Ofn = 1;
+ Ifn = 0;
+ while (argc>1 && argv[1][0] == '-') {
+ switch(argv[1][1]){
+ case 'x':
+ Debug = atoi(&argv[1][2]);
+ if (Debug <= 0)
+ Debug = 1;
+ break;
+ default:
+ sprintf(stderr, "unknown flag %s\n", argv[1]);
+ break;
+ }
+ --argc; argv++;
+ }
+
+ DEBUG(4, "\n\n** %s **\n", "START");
+ chdir(Spool);
+ strcpy(Wrkdir, Spool);
+ uid = getuid();
+ guinfo(uid, User, path);
+ DEBUG(4, "User - %s\n", User);
+ if (ulockf(X_LOCK, X_LOCKTIME) != 0)
+ exit(0);
+
+ DEBUG(4, "process %s\n", "");
+ while (gtxfile(xfile) > 0) {
+ DEBUG(4, "xfile - %s\n", xfile);
+
+ xfp = fopen(xfile, "r");
+ ASSERT(xfp != NULL, "CAN'T OPEN %s", xfile);
+
+ /* initialize to default */
+ strcpy(user, User);
+ strcpy(fin, "/dev/null");
+ strcpy(fout, "/dev/null");
+ sprintf(sysout, "%.7s", Myname);
+ while (fgets(buf, BUFSIZ, xfp) != NULL) {
+ switch (buf[0]) {
+ case X_USER:
+ sscanf(&buf[1], "%s%s", user, Rmtname);
+ break;
+ case X_STDIN:
+ sscanf(&buf[1], "%s", fin);
+ expfile(fin);
+ break;
+ case X_STDOUT:
+ sscanf(&buf[1], "%s%s", fout, sysout);
+ sysout[7] = '\0';
+ if (fout[0] != '~' || prefix(sysout, Myname))
+ expfile(fout);
+ break;
+ case X_CMD:
+ strcpy(cmd, &buf[2]);
+ if (*(cmd + strlen(cmd) - 1) == '\n')
+ *(cmd + strlen(cmd) - 1) = '\0';
+ break;
+ case X_NONOTI:
+ notiok = 0;
+ break;
+ case X_NONZERO:
+ nonzero = 1;
+ break;
+ default:
+ break;
+ }
+ }
+
+ fclose(xfp);
+ DEBUG(4, "fin - %s, ", fin);
+ DEBUG(4, "fout - %s, ", fout);
+ DEBUG(4, "sysout - %s, ", sysout);
+ DEBUG(4, "user - %s\n", user);
+ DEBUG(4, "cmd - %s\n", cmd);
+
+ /* command execution */
+ if (strcmp(fout, "/dev/null") == SAME)
+ strcpy(dfile,"/dev/null");
+ else
+ gename(DATAPRE, sysout, 'O', dfile);
+
+ /* expand file names where necessary */
+ expfile(dfile);
+ strcpy(buf, PATH);
+ cmdp = buf + strlen(buf);
+ ptr = cmd;
+ xcmd[0] = '\0';
+ cmdnok = 0;
+ while ((ptr = getprm(ptr, prm)) != NULL) {
+ if (((((prm[0] == ';') || (prm[0] == '^'))
+ || (prm[0] == '&')) || (prm[0] == '`'))
+ || (prm[0] == '|')) {
+ xcmd[0] = '\0';
+ APPCMD(prm);
+ continue;
+ }
+ if ((cmdnok = cmdok(xcmd, prm)) != 0)
+ /* command not valid */
+ break;
+
+ if (prm[0] == '~')
+ expfile(prm);
+ APPCMD(prm);
+ }
+ if (cmdnok) {
+ sprintf(lbuf, "%s XQT DENIED", user);
+ logent(cmd, lbuf);
+ DEBUG(4, "bad command %s\n", prm);
+ notify(user, Rmtname, cmd, "DENIED");
+ goto rmfiles;
+ }
+ sprintf(lbuf, "%s XQT", user);
+ logent(buf, lbuf);
+ DEBUG(4, "cmd %s\n", buf);
+
+ mvxfiles(xfile);
+ chdir(XQTDIR);
+ ret = shio(buf, fin, dfile, user);
+ sprintf(retstat, "exit %d, signal %d", ret&0377, (ret>>8)&0377);
+ if (strcmp(xcmd, "rmail") != SAME
+ && notiok && (!nonzero || (nonzero && ret != 0)))
+ notify(user, Rmtname, cmd, retstat);
+ DEBUG(4, "exit cmd - %d\n", ret);
+ chdir(Spool);
+ rmxfiles(xfile);
+ if (ret != 0) {
+ /* exit status not zero */
+ dfp = fopen(dfile, "a");
+ ASSERT(dfp != NULL, "CAN'T OPEN %s", dfile);
+ fprintf(dfp, "exit status %d", ret);
+ fclose(dfp);
+ }
+ if (strcmp(fout, "/dev/null") != SAME) {
+ if (prefix(sysout, Myname)) {
+ xmv(dfile, fout);
+ }
+ else {
+ gename(CMDPRE, sysout, 'O', cfile);
+ fp = fopen(cfile, "w");
+ ASSERT(fp != NULL, "OPEN %s", cfile);
+ chmod(cfile, 0666);
+ fprintf(fp, "S %s %s %s - %s 0666\n",
+ dfile, fout, user, lastpart(dfile));
+ fclose(fp);
+ }
+ }
+ rmfiles:
+ xfp = fopen(xfile, "r");
+ ASSERT(xfp != NULL, "CAN'T OPEN %s", xfile);
+ while (fgets(buf, BUFSIZ, xfp) != NULL) {
+ if (buf[0] != X_RQDFILE)
+ continue;
+ sscanf(&buf[1], "%s", file);
+ unlink(file);
+ }
+ fclose(xfp);
+ unlink(xfile);
+ }
+
+ if (stcico)
+ xuucico("");
+ cleanup(0);
+}
+
+
+cleanup(code)
+int code;
+{
+ logcls();
+ rmlock(NULL);
+ exit(code);
+}
+
+
+/*******
+ * gtxfile(file) get a file to execute
+ * char *file;
+ *
+ * return codes: 0 - no file | 1 - file to execute
+ */
+
+gtxfile(file)
+char *file;
+{
+ static DIR *pdir;
+ register struct direct *dirp;
+ char pre[2];
+ char spoolsubdir[100];
+
+ if (pdir == NULL) {
+ strcpy(spoolsubdir, Spool);
+ strcat(spoolsubdir, "/X.");
+ pdir = opendir(spoolsubdir);
+ ASSERT(pdir != NULL, "GTXFILE CAN'T OPEN %s", Spool);
+ }
+
+ pre[0] = XQTPRE;
+ pre[1] = '\0';
+ while ((dirp = readdir(pdir)) != NULL) {
+ if (dirp->d_ino == 0)
+ continue;
+ DEBUG(4, "file - %s\n", dirp->d_name);
+ if (!prefix(pre, dirp->d_name))
+ continue;
+ if (gotfiles(dirp->d_name)) {
+ /* return file to execute */
+ strcpy(file, dirp->d_name);
+ return(1);
+ }
+ }
+
+ closedir(pdir);
+ return(0);
+}
+
+
+/***
+ * gotfiles(file) check for needed files
+ * char *file;
+ *
+ * return codes: 0 - not ready | 1 - all files ready
+ */
+
+gotfiles(file)
+char *file;
+{
+ struct stat stbuf;
+ FILE *fp;
+ char buf[BUFSIZ], rqfile[MAXFULLNAME];
+
+ fp = fopen(file, "r");
+ if (fp == NULL)
+ return(0);
+
+ while (fgets(buf, BUFSIZ, fp) != NULL) {
+ DEBUG(4, "%s\n", buf);
+ if (buf[0] != X_RQDFILE)
+ continue;
+ sscanf(&buf[1], "%s", rqfile);
+ expfile(rqfile);
+ if (stat(rqfile, &stbuf) == -1) {
+ fclose(fp);
+ return(0);
+ }
+ }
+
+ fclose(fp);
+ return(1);
+}
+
+
+/***
+ * rmxfiles(xfile) remove execute files to x-directory
+ * char *xfile;
+ *
+ * return codes - none
+ */
+
+rmxfiles(xfile)
+char *xfile;
+{
+ FILE *fp;
+ char buf[BUFSIZ], file[NAMESIZE], tfile[NAMESIZE];
+ char tfull[MAXFULLNAME];
+
+ if((fp = fopen(xfile, "r")) == NULL)
+ return;
+
+ while (fgets(buf, BUFSIZ, fp) != NULL) {
+ if (buf[0] != X_RQDFILE)
+ continue;
+ if (sscanf(&buf[1], "%s%s", file, tfile) < 2)
+ continue;
+ sprintf(tfull, "%s/%s", XQTDIR, tfile);
+ unlink(tfull);
+ }
+ fclose(fp);
+ return;
+}
+
+
+/***
+ * mvxfiles(xfile) move execute files to x-directory
+ * char *xfile;
+ *
+ * return codes - none
+ */
+
+mvxfiles(xfile)
+char *xfile;
+{
+ FILE *fp;
+ char buf[BUFSIZ], ffile[MAXFULLNAME], tfile[NAMESIZE];
+ char tfull[MAXFULLNAME];
+ int ret;
+
+ if((fp = fopen(xfile, "r")) == NULL)
+ return;
+
+ while (fgets(buf, BUFSIZ, fp) != NULL) {
+ if (buf[0] != X_RQDFILE)
+ continue;
+ if (sscanf(&buf[1], "%s%s", ffile, tfile) < 2)
+ continue;
+ expfile(ffile);
+ sprintf(tfull, "%s/%s", XQTDIR, tfile);
+ unlink(tfull);
+ ret = link(ffile, tfull);
+ ASSERT(ret == 0, "LINK RET-%d", ret);
+ unlink(ffile);
+ }
+ fclose(fp);
+ return;
+}
+
+
+/***
+ * cmdok(xc, cmd) check for valid command
+ * *NOTE - side effect is to set xc to the
+ * command to be executed.
+ * char *xc, *cmd;
+ *
+ * return 0 - ok | 1 nok
+ */
+
+cmdok(xc, cmd)
+char *xc, *cmd;
+{
+ char **ptr;
+
+ if (xc[0] != '\0')
+ return(0);
+#ifndef ALLOK
+ ptr = Cmds;
+ while(*ptr != NULL) {
+ if (strcmp(cmd, *ptr) == SAME)
+ break;
+ ptr++;
+ }
+ if (*ptr == NULL)
+ return(1);
+#endif
+ strcpy(xc, cmd);
+ return(0);
+}
+
+
+/***
+ * notify send mail to user giving execution results
+ * return code - none
+ * This program assumes new mail command - send remote mail
+ */
+
+notify(user, rmt, cmd, str)
+char *user, *rmt, *cmd, *str;
+{
+ char text[100];
+ char ruser[100];
+
+ sprintf(text, "uuxqt cmd (%.60s) status (%s)", cmd, str);
+ if (prefix(rmt, Myname))
+ strcpy(ruser, user);
+ else
+ sprintf(ruser, "%s!%s", rmt, user);
+ mailst(ruser, text);
+ return;
+}
projects / unix-history / commitdiff