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Annotation of researchv8dc/cmd/upas/send/notify.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  *     notify user on mail arrival
                      3:  */
                      4: #include <stdio.h>
                      5: #include <sys/types.h>
                      6: #include <sys/stat.h>
                      7: #include <utmp.h>
                      8: #include "string.h"
                      9: 
                     10: /* imports */
                     11: extern char *thissys;
                     12: extern unsigned int alarm();
                     13: 
                     14: extern void
                     15: setnotify()
                     16: {
                     17:        struct stat s;
                     18:        char *ttyname();
                     19:        char *p;
                     20: 
                     21:        fstat(2, &s);
                     22:        setgid(getgid());
                     23:        setuid(getuid());
                     24:        if ((p = ttyname(2)) && *p)
                     25:                chmod(p, s.st_mode ^ S_IEXEC);
                     26: }
                     27: 
                     28: 
                     29: static int
                     30: blurbtime()
                     31: {
                     32: }
                     33: 
                     34: static void
                     35: blurb(tty, sender, maxsize)
                     36: char *tty, *sender;
                     37: {
                     38:        FILE *f = NULL;
                     39:        struct stat s;
                     40:        char devtty[32];
                     41: 
                     42:        strcpy(devtty, "/dev/");
                     43:        strncat(devtty, tty, maxsize);
                     44:        signal(SIGALRM, blurbtime);
                     45:        alarm(30);
                     46:        stat(devtty, &s);
                     47:        if (s.st_mode & S_IEXEC)        /* notify only if enabled */
                     48:        if ((f = fopen(devtty, "w")) != NULL) {
                     49:                fprintf(f, "\r\n[%s: mail from %s]\r\n\7", thissys,
                     50:                  sender);
                     51:        }
                     52:        if (f)
                     53:                fclose(f);
                     54:        alarm(0);
                     55: }
                     56: 
                     57: extern int
                     58: notify(name, sender)
                     59: char *name, *sender;
                     60: {
                     61:        struct utmp entry;
                     62:        FILE *f;
                     63: 
                     64:        if ((f = fopen("/etc/utmp", "r")) == NULL)
                     65:                return;
                     66:        while (fread((char *)&entry, sizeof(entry), 1, f) == 1) {
                     67:                if (strncmp(name, entry.ut_name, sizeof(entry.ut_name)) == 0)
                     68:                        blurb(entry.ut_line, sender, sizeof(entry.ut_line));
                     69:        }
                     70:        fclose(f);
                     71: }

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