/*
* show.c -- show/list messages
*
* $Id: show.c,v 1.6 2003/01/02 04:07:49 kimmo Exp $
*
* 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 <h/mime.h>
static struct swit switches[] = {
#define CHECKMIMESW 0
{ "checkmime", 0 },
#define NOCHECKMIMESW 1
{ "nocheckmime", 0 },
#define HEADSW 2
{ "header", 0 },
#define NHEADSW 3
{ "noheader", 0 },
#define FORMSW 4
{ "form formfile", 0 },
#define PROGSW 5
{ "moreproc program", 0 },
#define NPROGSW 6
{ "nomoreproc", 0 },
#define LENSW 7
{ "length lines", 0 },
#define WIDTHSW 8
{ "width columns", 0 },
#define SHOWSW 9
{ "showproc program", 0 },
#define SHOWMIMESW 10
{ "showmimeproc program", 0 },
#define NSHOWSW 11
{ "noshowproc", 0 },
#define DRFTSW 12
{ "draft", 0 },
#define FILESW 13
{ "file file", -4 }, /* interface from showfile */
#define VERSIONSW 14
{ "version", 0 },
#define HELPSW 15
{ "help", 0 },
{ NULL, 0 }
};
/*
* static prototypes
*/
static int is_nontext(char *);
/* prototype from mhlsbr.c */
int mhl (int, char **);
#define SHOW 0
#define NEXT 1
#define PREV 2
int
main (int argc, char **argv)
{
int draftsw = 0, headersw = 1, msgp = 0;
int nshow = 0, checkmime = 1, mime;
int vecp = 1, procp = 1, isdf = 0, mode = SHOW, msgnum;
char *cp, *maildir, *file = NULL, *folder = NULL, *proc;
char buf[BUFSIZ], **argp, **arguments;
char *msgs[MAXARGS], *vec[MAXARGS];
struct msgs *mp;
#ifdef LOCALE
setlocale(LC_ALL, "");
#endif
invo_name = r1bindex (argv[0], '/');
/* read user profile/context */
context_read();
if (!strcasecmp (invo_name, "next")) {
mode = NEXT;
} else if (!strcasecmp (invo_name, "prev")) {
mode = PREV;
}
arguments = getarguments (invo_name, argc, argv, 1);
argp = arguments;
while ((cp = *argp++)) {
if (*cp == '-') {
switch (smatch (++cp, switches)) {
case AMBIGSW:
ambigsw (cp, switches);
done (1);
case UNKWNSW:
case NPROGSW:
vec[vecp++] = --cp;
continue;
case HELPSW:
snprintf (buf, sizeof(buf),
"%s [+folder] %s[switches] [switches for showproc]",
invo_name, mode == SHOW ? "[msgs] ": "");
print_help (buf, switches, 1);
done (1);
case VERSIONSW:
print_version(invo_name);
done (1);
case DRFTSW:
if (file)
adios (NULL, "only one file at a time!");
draftsw++;
if (mode == SHOW)
continue;
usage:
adios (NULL,
"usage: %s [+folder] [switches] [switches for showproc]",
invo_name);
case FILESW:
if (mode != SHOW)
goto usage;
if (draftsw || file)
adios (NULL, "only one file at a time!");
if (!(cp = *argp++) || *cp == '-')
adios (NULL, "missing argument to %s", argp[-2]);
file = path (cp, TFILE);
continue;
case HEADSW:
headersw++;
continue;
case NHEADSW:
headersw = 0;
continue;
case FORMSW:
vec[vecp++] = --cp;
if (!(cp = *argp++) || *cp == '-')
adios (NULL, "missing argument to %s", argp[-2]);
vec[vecp++] = getcpy (etcpath(cp));
continue;
case PROGSW:
case LENSW:
case WIDTHSW:
vec[vecp++] = --cp;
if (!(cp = *argp++) || *cp == '-')
adios (NULL, "missing argument to %s", argp[-2]);
vec[vecp++] = cp;
continue;
case SHOWSW:
if (!(showproc = *argp++) || *showproc == '-')
adios (NULL, "missing argument to %s", argp[-2]);
nshow = 0;
continue;
case NSHOWSW:
nshow++;
continue;
case SHOWMIMESW:
if (!(showmimeproc = *argp++) || *showmimeproc == '-')
adios (NULL, "missing argument to %s", argp[-2]);
nshow = 0;
continue;
case CHECKMIMESW:
checkmime++;
continue;
case NOCHECKMIMESW:
checkmime = 0;
continue;
}
}
if (*cp == '+' || *cp == '@') {
if (folder)
adios (NULL, "only one folder at a time!");
else
folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
} else {
if (mode != SHOW)
goto usage;
else
msgs[msgp++] = cp;
}
}
procp = vecp;
if (!context_find ("path"))
free (path ("./", TFOLDER));
if (draftsw || file) {
if (msgp)
adios (NULL, "only one file at a time!");
vec[vecp++] = draftsw
? getcpy (m_draft (folder, msgp ? msgs[0] : NULL, 1, &isdf))
: file;
goto go_to_it;
}
#ifdef WHATNOW
if (!msgp && !folder && mode == SHOW && (cp = getenv ("mhdraft")) && *cp) {
draftsw++;
vec[vecp++] = cp;
goto go_to_it;
}
#endif /* WHATNOW */
if (!msgp) {
switch (mode) {
case NEXT:
msgs[msgp++] = "next";
break;
case PREV:
msgs[msgp++] = "prev";
break;
default:
msgs[msgp++] = "cur";
break;
}
}
if (!folder)
folder = getfolder (1);
maildir = m_maildir (folder);
if (chdir (maildir) == NOTOK)
adios (maildir, "unable to change directory to");
/* read folder and create message structure */
if (!(mp = folder_read (folder)))
adios (NULL, "unable to read folder %s", folder);
/* check for empty folder */
if (mp->nummsg == 0)
adios (NULL, "no messages in %s", folder);
/* parse all the message ranges/sequences and set SELECTED */
for (msgnum = 0; msgnum < msgp; msgnum++)
if (!m_convert (mp, msgs[msgnum]))
done (1);
/*
* Set the SELECT_UNSEEN bit for all the SELECTED messages,
* since we will use that as a tag to know which messages
* to remove from the "unseen" sequence.
*/
for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
if (is_selected(mp, msgnum))
set_unseen (mp, msgnum);
seq_setprev (mp); /* set the Previous-Sequence */
seq_setunseen (mp, 1); /* unset the Unseen-Sequence */
if (mp->numsel > MAXARGS - 2)
adios (NULL, "more than %d messages for show exec", MAXARGS - 2);
for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
if (is_selected(mp, msgnum))
vec[vecp++] = getcpy (m_name (msgnum));
seq_setcur (mp, mp->hghsel); /* update current message */
seq_save (mp); /* synchronize sequences */
context_replace (pfolder, folder); /* update current folder */
context_save (); /* save the context file */
if (headersw && vecp == 2)
printf ("(Message %s:%s)\n", folder, vec[1]);
go_to_it: ;
fflush (stdout);
vec[vecp] = NULL;
/*
* Decide which "proc" to use
*/
mime = 0;
if (nshow) {
proc = catproc;
} else {
/* check if any messages are non-text MIME messages */
if (checkmime && !getenv ("NOMHNPROC")) {
if (!draftsw && !file) {
/* loop through selected messages and check for MIME */
for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
if (is_selected (mp, msgnum) && is_nontext (m_name (msgnum))) {
mime = 1;
break;
}
} else {
/* check the file or draft for MIME */
if (is_nontext (vec[vecp - 1]))
mime = 1;
}
}
/* Set the "proc" */
if (mime)
proc = showmimeproc;
else
proc = showproc;
}
if (folder && !draftsw && !file)
m_putenv ("mhfolder", folder);
/*
* For backward compatibility, if the "proc" is mhn,
* then add "-show" option. Add "-file" if showing
* file or draft.
*/
if (strcmp (r1bindex (proc, '/'), "mhn") == 0) {
if (draftsw || file) {
vec[vecp] = vec[vecp - 1];
vec[vecp - 1] = "-file";
vecp++;
}
vec[vecp++] = "-show";
vec[vecp] = NULL;
}
/* If the "proc" is "mhshow", add "-file" if showing file or draft.
*/
if (strcmp (r1bindex (proc, '/'), "mhshow") == 0 && (draftsw || file) ) {
vec[vecp] = vec[vecp - 1];
vec[vecp - 1] = "-file";
vec[++vecp] = NULL;
}
/*
* If "proc" is mhl, then run it internally
* rather than exec'ing it.
*/
if (strcmp (r1bindex (proc, '/'), "mhl") == 0) {
vec[0] = "mhl";
mhl (vecp, vec);
done (0);
}
/*
* If you are not using a nmh command as your "proc", then
* add the path to the message names. Currently, we are just
* checking for mhn here, since we've already taken care of mhl.
*/
if (!strcmp (r1bindex (proc, '/'), "mhl")
&& !draftsw
&& !file
&& chdir (maildir = concat (m_maildir (""), "/", NULL)) != NOTOK) {
mp->foldpath = concat (mp->foldpath, "/", NULL);
cp = ssequal (maildir, mp->foldpath)
? mp->foldpath + strlen (maildir)
: mp->foldpath;
for (msgnum = procp; msgnum < vecp; msgnum++)
vec[msgnum] = concat (cp, vec[msgnum], NULL);
}
vec[0] = r1bindex (proc, '/');
execvp (proc, vec);
adios (proc, "unable to exec");
return 0; /* dead code to satisfy the compiler */
}
/*
* Cheat: we are loaded with adrparse, which wants a routine called
* OfficialName(). We call adrparse:getm() with the correct arguments
* to prevent OfficialName() from being called. Hence, the following
* is to keep the loader happy.
*/
char *
OfficialName (char *name)
{
return name;
}
/*
* Check if a message or file contains any non-text parts
*/
static int
is_nontext (char *msgnam)
{
int result, state;
char *bp, *cp, *dp;
char buf[BUFSIZ], name[NAMESZ];
FILE *fp;
if ((fp = fopen (msgnam, "r")) == NULL)
return 0;
for (state = FLD;;) {
switch (state = m_getfld (state, name, buf, sizeof(buf), fp)) {
case FLD:
case FLDPLUS:
case FLDEOF:
/*
* Check Content-Type field
*/
if (!strcasecmp (name, TYPE_FIELD)) {
int passno;
char c;
cp = add (buf, NULL);
while (state == FLDPLUS) {
state = m_getfld (state, name, buf, sizeof(buf), fp);
cp = add (buf, cp);
}
bp = cp;
passno = 1;
again:
for (; isspace (*bp); bp++)
continue;
if (*bp == '(') {
int i;
for (bp++, i = 0;;) {
switch (*bp++) {
case '\0':
invalid:
result = 0;
goto out;
case '\\':
if (*bp++ == '\0')
goto invalid;
continue;
case '(':
i++;
/* and fall... */
default:
continue;
case ')':
if (--i < 0)
break;
continue;
}
break;
}
}
if (passno == 2) {
if (*bp != '/')
goto invalid;
bp++;
passno = 3;
goto again;
}
for (dp = bp; istoken (*dp); dp++)
continue;
c = *dp;
*dp = '\0';
if (!*bp)
goto invalid;
if (passno > 1) {
if ((result = (strcasecmp (bp, "plain") != 0)))
goto out;
*dp = c;
for (dp++; isspace (*dp); dp++)
continue;
if (*dp) {
if ((result = !uprf (dp, "charset")))
goto out;
dp += sizeof("charset") - 1;
while (isspace (*dp))
dp++;
if (*dp++ != '=')
goto invalid;
while (isspace (*dp))
dp++;
if (*dp == '"') {
if ((bp = strchr(++dp, '"')))
*bp = '\0';
} else {
for (bp = dp; *bp; bp++)
if (!istoken (*bp)) {
*bp = '\0';
break;
}
}
} else {
/* Default character set */
dp = "US-ASCII";
}
/* Check the character set */
result = !check_charset (dp, strlen (dp));
} else {
if (!(result = (strcasecmp (bp, "text") != 0))) {
*dp = c;
bp = dp;
passno = 2;
goto again;
}
}
out:
free (cp);
if (result) {
fclose (fp);
return result;
}
break;
}
/*
* Check Content-Transfer-Encoding field
*/
if (!strcasecmp (name, ENCODING_FIELD)) {
cp = add (buf, NULL);
while (state == FLDPLUS) {
state = m_getfld (state, name, buf, sizeof(buf), fp);
cp = add (buf, cp);
}
for (bp = cp; isspace (*bp); bp++)
continue;
for (dp = bp; istoken (*dp); dp++)
continue;
*dp = '\0';
result = (strcasecmp (bp, "7bit")
&& strcasecmp (bp, "8bit")
&& strcasecmp (bp, "binary"));
free (cp);
if (result) {
fclose (fp);
return result;
}
break;
}
/*
* Just skip the rest of this header
* field and go to next one.
*/
while (state == FLDPLUS)
state = m_getfld (state, name, buf, sizeof(buf), fp);
break;
/*
* We've passed the message header,
* so message is just text.
*/
default:
fclose (fp);
return 0;
}
}
}
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