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/* distsbr.c -- routines to do additional "dist-style" processing
*
* 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 "h/mh.h"
#include "distsbr.h"
#include "sbr/m_gmprot.h"
#include "sbr/m_getfld.h"
#include "sbr/cpydata.h"
#include "sbr/uprf.h"
#include "sbr/m_backup.h"
#include "sbr/error.h"
#include <fcntl.h>
#include "sbr/utils.h"
#include "sbr/m_mktemp.h"
static int hdrfd = NOTOK;
static int txtfd = NOTOK;
#define BADHDR "please re-edit %s to remove the ``%s'' header!"
#define BADTXT "please re-edit %s to consist of headers only!"
#define BADMSG "please re-edit %s to include a ``Resent-To:''!"
#define BADRFT "please re-edit %s and fix that header!"
/*
* static prototypes
*/
static void ready_msg(char *);
int
distout (char *drft, char *msgnam, char *backup)
{
int state;
char *dp, *resent;
char name[NAMESZ], buffer[NMH_BUFSIZ];
FILE *ifp, *ofp;
m_getfld_state_t gstate;
if (rename (drft, strcpy (backup, m_backup (drft))) == -1)
adios (backup, "unable to rename %s to",drft);
if ((ifp = fopen (backup, "r")) == NULL)
adios (backup, "unable to read");
if ((ofp = fopen (drft, "w")) == NULL)
adios (drft, "unable to create temporary file");
chmod (drft, m_gmprot ());
ready_msg (msgnam);
lseek(hdrfd, 0, SEEK_SET); /* msgnam not accurate */
cpydata (hdrfd, fileno (ofp), msgnam, drft);
gstate = m_getfld_state_init(ifp);
for (resent = NULL;;) {
int buffersz = sizeof buffer;
switch (state = m_getfld2(&gstate, name, buffer, &buffersz)) {
case FLD:
case FLDPLUS:
if (uprf (name, "distribute-")) {
(void) memcpy(name, "Resent", 6);
(void) memmove(name + 6, name + 10, sizeof name - 10);
/* in case the string wasn't null terminated,
4 = strlen("distribute") - strlen("Resent") */
name[sizeof name - 4] = '\0';
}
if (uprf (name, "distribution-")) {
(void) memcpy(name, "Resent", 6);
(void) memmove(name + 6, name + 12, sizeof name - 12);
/* in case the string wasn't null terminated,
6 = strlen("distribution") - strlen("Resent") */
name[sizeof name - 6] = '\0';
}
if (!uprf (name, "resent")) {
inform(BADHDR, "draft", name);
goto leave_bad;
}
if (state == FLD)
resent = add (":", add (name, resent));
resent = add (buffer, resent);
fprintf (ofp, "%s:%s", name, buffer);
while (state == FLDPLUS) {
buffersz = sizeof buffer;
state = m_getfld2(&gstate, name, buffer, &buffersz);
resent = add (buffer, resent);
fputs (buffer, ofp);
}
break;
case BODY:
for (dp = buffer; *dp; dp++)
if (!isspace ((unsigned char) *dp)) {
inform(BADTXT, "draft");
goto leave_bad;
}
case FILEEOF:
goto process;
case LENERR:
case FMTERR:
inform(BADRFT, "draft");
leave_bad: ;
fclose (ifp);
fclose (ofp);
(void) m_unlink (drft);
if (rename (backup, drft) == -1)
adios (drft, "unable to rename %s to", backup);
return NOTOK;
default:
die("getfld() returned %d", state);
}
}
process: ;
m_getfld_state_destroy (&gstate);
fclose (ifp);
fflush (ofp);
if (!resent) {
inform(BADMSG, "draft");
fclose (ofp);
(void) m_unlink (drft);
if (rename (backup, drft) == -1)
adios (drft, "unable to rename %s to", backup);
return NOTOK;
}
free (resent);
if (txtfd != NOTOK) {
lseek(txtfd, 0, SEEK_SET); /* msgnam not accurate */
cpydata (txtfd, fileno (ofp), msgnam, drft);
}
fclose (ofp);
return OK;
}
static void
ready_msg (char *msgnam)
{
int state, out;
char name[NAMESZ], buffer[NMH_BUFSIZ], tmpfil[BUFSIZ];
FILE *ifp, *ofp;
char *cp = NULL;
m_getfld_state_t gstate;
if (hdrfd != NOTOK) {
close (hdrfd);
hdrfd = NOTOK;
}
if (txtfd != NOTOK) {
close (txtfd);
txtfd = NOTOK;
}
if ((ifp = fopen (msgnam, "r")) == NULL)
adios (msgnam, "unable to open message");
cp = m_mktemp2(NULL, "dist", &hdrfd, NULL);
if (cp == NULL) {
die("unable to create temporary file in %s", get_temp_dir());
}
strncpy(tmpfil, cp, sizeof(tmpfil) - 1);
if ((out = dup (hdrfd)) == -1
|| (ofp = fdopen (out, "w")) == NULL)
die("no file descriptors -- you lose big");
(void) m_unlink (tmpfil);
gstate = m_getfld_state_init(ifp);
for (;;) {
int buffersz = sizeof buffer;
switch (state = m_getfld2(&gstate, name, buffer, &buffersz)) {
case FLD:
case FLDPLUS:
if (uprf (name, "resent"))
fprintf (ofp, "Prev-");
fprintf (ofp, "%s:%s", name, buffer);
while (state == FLDPLUS) {
buffersz = sizeof buffer;
state = m_getfld2(&gstate, name, buffer, &buffersz);
fputs (buffer, ofp);
}
break;
case BODY:
fclose (ofp);
cp = m_mktemp2(NULL, "dist", &txtfd, NULL);
if (cp == NULL) {
die("unable to create temporary file in %s",
get_temp_dir());
}
fchmod(txtfd, 0600);
strncpy (tmpfil, cp, sizeof(tmpfil) - 1);
if ((out = dup (txtfd)) == -1
|| (ofp = fdopen (out, "w")) == NULL)
die("no file descriptors -- you lose big");
(void) m_unlink (tmpfil);
fprintf (ofp, "\n%s", buffer);
while (state == BODY) {
buffersz = sizeof buffer;
state = m_getfld2(&gstate, name, buffer, &buffersz);
fputs (buffer, ofp);
}
case FILEEOF:
goto process;
case LENERR:
case FMTERR:
die("format error in message %s", msgnam);
default:
die("getfld() returned %d", state);
}
}
process: ;
m_getfld_state_destroy (&gstate);
fclose (ifp);
fclose (ofp);
}
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