X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/aae44c933a5b035e0b23abf4dd4247cd37e4d041..ec173fd2c:/uip/rcvtty.c?ds=sidebyside diff --git a/uip/rcvtty.c b/uip/rcvtty.c index 5bdddb23..73440fb0 100644 --- a/uip/rcvtty.c +++ b/uip/rcvtty.c @@ -1,149 +1,146 @@ - -/* - * rcvtty.c -- a rcvmail program (a lot like rcvalert) handling IPC ttys +/* rcvtty.c -- a rcvmail program (a lot like rcvalert) handling IPC ttys * - * $Id$ + * This code is Copyright (c) 2002, by the authors of nmh. See the + * COPYRIGHT file in the root directory of the nmh distribution for + * complete copyright information. */ -#include -#include -#include -#include -#include -#include -#include +/* Changed to use getutent() and friends. Assumes that when getutent() exists, + * a number of other things also exist. Please check. + * Ruud de Rooij Sun, 28 May 2000 17:28:55 +0200 + */ + +#include "h/mh.h" +#include "sbr/fmt_new.h" +#include "scansbr.h" +#include "sbr/getarguments.h" +#include "sbr/smatch.h" +#include "sbr/closefds.h" +#include "sbr/ambigsw.h" +#include "sbr/print_version.h" +#include "sbr/print_help.h" +#include "sbr/error.h" +#include "h/signals.h" +#include +#include "h/fmt_scan.h" +#include "h/tws.h" +#include "h/mts.h" +#include "h/done.h" +#include "h/utils.h" +#include "sbr/m_mktemp.h" #include -#include -#ifndef UTMP_FILE -# ifdef _PATH_UTMP -# define UTMP_FILE _PATH_UTMP -# else -# define UTMP_FILE "/etc/utmp" -# endif -#endif +#ifdef HAVE_GETUTXENT +#include +#endif /* HAVE_GETUTXENT */ #define SCANFMT \ "%2(hour{dtimenow}):%02(min{dtimenow}): %<(size)%5(size) %>%<{encrypted}E%>\ %<(mymbox{from})%<{to}To:%14(friendly{to})%>%>%<(zero)%17(friendly{from})%> \ %{subject}%<{body}<<%{body}>>%>" -static struct swit switches[] = { -#define BIFFSW 0 - { "biff", 0 }, -#define FORMSW 1 - { "form formatfile", 0 }, -#define FMTSW 2 - { "format string", 5 }, -#define WIDTHSW 3 - { "width columns", 0 }, -#define NLSW 4 - { "newline", 0 }, -#define NNLSW 5 - { "nonewline", 0 }, -#define BELSW 6 - { "bell", 0 }, -#define NBELSW 7 - { "nobell", 0 }, -#define VERSIONSW 8 - { "version", 0 }, -#define HELPSW 9 - { "help", 0 }, - { NULL, 0 } -}; +#define RCVTTY_SWITCHES \ + X("biff", 0, BIFFSW) \ + X("form formatfile", 0, FORMSW) \ + X("format string", 5, FMTSW) \ + X("width columns", 0, WIDTHSW) \ + X("newline", 0, NLSW) \ + X("nonewline", 0, NNLSW) \ + X("bell", 0, BELSW) \ + X("nobell", 0, NBELSW) \ + X("version", 0, VERSIONSW) \ + X("help", 0, HELPSW) \ + +#define X(sw, minchars, id) id, +DEFINE_SWITCH_ENUM(RCVTTY); +#undef X + +#define X(sw, minchars, id) { sw, minchars, id }, +DEFINE_SWITCH_ARRAY(RCVTTY, switches); +#undef X static jmp_buf myctx; -static int bell = 1; -static int newline = 1; -static int biff = 0; -static int width = 0; +static bool bell = true; +static bool newline = true; +static bool biff; +static int width = -1; static char *form = NULL; static char *format = NULL; -/* - * external prototypes - */ -char *getusername(void); - /* * static prototypes */ -static RETSIGTYPE alrmser (int); +static void alrmser (int); static int message_fd (char **); static int header_fd (void); +#if HAVE_GETUTXENT static void alert (char *, int); +#endif /* HAVE_GETUTXENT */ int main (int argc, char **argv) { int md, vecp = 0; - char *cp, *user, buf[BUFSIZ], tty[BUFSIZ]; + char *cp, *user, buf[BUFSIZ]; char **argp, **arguments, *vec[MAXARGS]; - struct utmp ut; - register FILE *uf; + struct utmpx *utp; -#ifdef LOCALE - setlocale(LC_ALL, ""); -#endif - invo_name = r1bindex (argv[0], '/'); + if (nmh_init(argv[0], true, false)) { return 1; } - /* read user profile/context */ - context_read(); - - mts_init (invo_name); + mts_init (); arguments = getarguments (invo_name, argc, argv, 1); argp = arguments; while ((cp = *argp++)) { if (*cp == '-') { switch (smatch (++cp, switches)) { - case AMBIGSW: + case AMBIGSW: ambigsw (cp, switches); done (1); - case UNKWNSW: + case UNKWNSW: vec[vecp++] = --cp; continue; - case HELPSW: + case HELPSW: snprintf (buf, sizeof(buf), "%s [command ...]", invo_name); print_help (buf, switches, 1); - done (1); + done (0); case VERSIONSW: print_version(invo_name); - done (1); + done (0); case BIFFSW: - biff = 1; + biff = true; continue; - case FORMSW: + case FORMSW: if (!(form = *argp++) || *form == '-') - adios (NULL, "missing argument to %s", argp[-2]); + die("missing argument to %s", argp[-2]); format = NULL; continue; - case FMTSW: + case FMTSW: if (!(format = *argp++) || *format == '-') - adios (NULL, "missing argument to %s", argp[-2]); + die("missing argument to %s", argp[-2]); form = NULL; continue; case WIDTHSW: if (!(cp = *argp++) || *cp == '-') - adios(NULL, "missing argument to %s", argp[-2]); + die("missing argument to %s", argp[-2]); width = atoi(cp); continue; case NLSW: - newline = 1; + newline = true; continue; case NNLSW: - newline = 0; + newline = false; continue; case BELSW: - bell = 1; + bell = true; continue; case NBELSW: - bell = 0; + bell = false; continue; } @@ -153,31 +150,32 @@ main (int argc, char **argv) vec[vecp] = 0; if ((md = vecp ? message_fd (vec) : header_fd ()) == NOTOK) - exit (RCV_MBX); + exit(1); user = getusername(); - if ((uf = fopen (UTMP_FILE, "r")) == NULL) - exit (RCV_MBX); - - while (fread ((char *) &ut, sizeof(ut), 1, uf) == 1) - if (ut.ut_name[0] != 0 - && strncmp (user, ut.ut_name, sizeof(ut.ut_name)) == 0) { - strncpy (tty, ut.ut_line, sizeof(ut.ut_line)); - alert (tty, md); - } - fclose (uf); - exit (RCV_MOK); - return 0; /* dead code to satisfy the compiler */ +#if HAVE_GETUTXENT + setutxent(); + while ((utp = getutxent()) != NULL) { + if (utp->ut_type == USER_PROCESS && utp->ut_user[0] != 0 + && utp->ut_line[0] != 0 + && strncmp (user, utp->ut_user, sizeof(utp->ut_user)) == 0) { + alert(utp->ut_line, md); + } + } + endutxent(); +#else + NMH_UNUSED (utp); +#endif /* HAVE_GETUTXENT */ + + exit(0); } -static RETSIGTYPE +static void alrmser (int i) { -#ifndef RELIABLE_SIGNALS - SIGNAL (SIGALRM, alrmser); -#endif + NMH_UNUSED (i); longjmp (myctx, 1); } @@ -187,24 +185,23 @@ static int message_fd (char **vec) { pid_t child_id; - int bytes, fd, seconds; - char tmpfil[BUFSIZ]; + int bytes, seconds; + int fd; + char *tfile; struct stat st; -#ifdef HAVE_MKSTEMP - fd = mkstemp (strncpy (tmpfil, "/tmp/rcvttyXXXXX", sizeof(tmpfil))); -#else - unlink (mktemp (strncpy (tmpfil, "/tmp/rcvttyXXXXX", sizeof(tmpfil)))); - if ((fd = open (tmpfil, O_RDWR | O_CREAT | O_TRUNC, 0600)) == NOTOK) - return header_fd (); -#endif - unlink (tmpfil); + if ((tfile = m_mktemp2(NULL, invo_name, &fd, NULL)) == NULL) { + inform("unable to create temporary file in %s", get_temp_dir()); + return NOTOK; + } + (void) m_unlink(tfile); /* Use fd, no longer need the file name. */ - if ((child_id = vfork()) == NOTOK) { + if ((child_id = fork()) == NOTOK) { /* fork error */ close (fd); return header_fd (); - } else if (child_id) { + } + if (child_id) { /* parent process */ if (!setjmp (myctx)) { SIGNAL (SIGALRM, alrmser); @@ -224,14 +221,14 @@ message_fd (char **vec) pidwait(child_id, OK); alarm (0); - if (fstat (fd, &st) != NOTOK && st.st_size > (off_t) 0) + if (fstat (fd, &st) != NOTOK && st.st_size > 0) return fd; } else { /* * Ruthlessly kill the child and anything * else in its process group. */ - KILLPG(child_id, SIGKILL); + killpg(child_id, SIGKILL); } close (fd); return header_fd (); @@ -240,12 +237,14 @@ message_fd (char **vec) /* child process */ rewind (stdin); if (dup2 (fd, 1) == NOTOK || dup2 (fd, 2) == NOTOK) - _exit (-1); + _exit(1); closefds (3); - setpgid ((pid_t) 0, getpid ()); /* put in own process group */ - execvp (vec[0], vec); - _exit (-1); - return 1; /* dead code to satisfy compiler */ + setpgid(0, getpid()); /* put in own process group */ + if (execvp (vec[0], vec) == NOTOK) { + _exit(1); + } + + return NOTOK; } @@ -253,28 +252,42 @@ static int header_fd (void) { int fd; - char *nfs, tmpfil[BUFSIZ]; + char *nfs; + char *tfile = NULL; + charstring_t scanl = NULL; - strncpy (tmpfil, m_tmpfil (invo_name), sizeof(tmpfil)); - if ((fd = open (tmpfil, O_RDWR | O_CREAT | O_TRUNC, 0600)) == NOTOK) - return NOTOK; - unlink (tmpfil); + if ((tfile = m_mktemp2(NULL, invo_name, &fd, NULL)) == NULL) { + inform("unable to create temporary file in %s", get_temp_dir()); + return NOTOK; + } + (void) m_unlink(tfile); /* Use fd, no longer need the file name. */ rewind (stdin); /* get new format string */ nfs = new_fs (form, format, SCANFMT); - scan (stdin, 0, 0, nfs, width, 0, 0, NULL, 0L, 0); - if (newline) - write (fd, "\n\r", 2); - write (fd, scanl, strlen (scanl)); - if (bell) - write (fd, "\007", 1); + scan (stdin, 0, 0, nfs, width, 0, 0, NULL, 0L, 0, &scanl); + scan_finished (); + if (newline) { + if (write (fd, "\n\r", 2) < 0) { + advise (tfile, "write LF/CR"); + } + } + if (write (fd, charstring_buffer (scanl), charstring_bytes (scanl)) < 0) { + advise (tfile, "write"); + } + charstring_free (scanl); + if (bell) { + if (write (fd, "\007", 1) < 0) { + advise (tfile, "write BEL"); + } + } return fd; } +#if HAVE_GETUTXENT static void alert (char *tty, int md) { @@ -292,19 +305,18 @@ alert (char *tty, int md) if (stat (ttyspec, &st) == NOTOK || (st.st_mode & mask) == 0) return; - if (!setjmp (myctx)) { - SIGNAL (SIGALRM, alrmser); - alarm (2); - td = open (ttyspec, O_WRONLY); - alarm (0); - if (td == NOTOK) - return; - } else { + if (setjmp (myctx)) { alarm (0); return; } + SIGNAL (SIGALRM, alrmser); + alarm (2); + td = open (ttyspec, O_WRONLY); + alarm (0); + if (td == NOTOK) + return; - lseek (md, (off_t) 0, SEEK_SET); + lseek(md, 0, SEEK_SET); while ((i = read (md, buffer, sizeof(buffer))) > 0) if (write (td, buffer, i) != i) @@ -312,4 +324,4 @@ alert (char *tty, int md) close (td); } - +#endif /* HAVE_GETUTXENT */