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/*
* forwsbr.c -- subroutine to build a draft from a component file
*
* This code is Copyright (c) 2012, 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 <fcntl.h>
#include <h/fmt_scan.h>
#include <h/tws.h>
#include <h/utils.h>
/*
* Take from replsbr.c - a buffer big enough to read in data header lines
* in reasonable chunks but not enough to slurp in the whole message
*/
static char msgbuf[256];
#define COMPFREE(c) if (c->c_text) free(c->c_text)
/*
* A list of components we treat as addresses
*/
static char *addrcomps[] = {
"from",
"sender",
"reply-to",
"to",
"cc",
"bcc",
"resent-from",
"resent-sender",
"resent-reply-to",
"resent-to",
"resent-cc",
"resent-bcc",
NULL
};
int
build_form (char *form, char *digest, int *dat, char *from, char *to,
char *cc, char *fcc, char *subject, char *inputfile)
{
int in;
int fmtsize, state;
int i;
register char *nfs;
char *line, tmpfil[BUFSIZ], name[NAMESZ], **ap;
FILE *tmp;
register struct comp *cptr;
struct format *fmt;
char *cp = NULL;
m_getfld_state_t gstate = 0;
/*
* Open the message we'll be scanning for components
*/
if ((tmp = fopen(inputfile, "r")) == NULL)
adios (inputfile, "Unable to open");
/* Get new format string */
nfs = new_fs (form, NULL, NULL);
fmtsize = strlen (nfs) + 256;
/* Compile format string */
(void) fmt_compile (nfs, &fmt, 1);
/*
* Mark any components tagged as address components
*/
for (ap = addrcomps; *ap; ap++) {
cptr = fmt_findcomp (*ap);
if (cptr)
cptr->c_type |= CT_ADDR;
}
/*
* Process our message and save all relevant components
*
* A lot of this is taken from replsbr.c; should we try to merge
* these routines?
*/
for (;;) {
int msg_count = sizeof msgbuf;
state = m_getfld (&gstate, name, msgbuf, &msg_count, tmp);
switch (state) {
case FLD:
case FLDPLUS:
/*
* If we find a component that we're interested in, save
* a copy. We don't do all of that weird buffer switching
* that replout does.
*/
i = fmt_addcomptext(name, msgbuf);
if (i != -1) {
while (state == FLDPLUS) {
msg_count = sizeof msgbuf;
state = m_getfld (&gstate, name, msgbuf, &msg_count, tmp);
fmt_appendcomp(i, name, msgbuf);
}
}
while (state == FLDPLUS) {
msg_count = sizeof msgbuf;
state = m_getfld (&gstate, name, msgbuf, &msg_count, tmp);
}
break;
case LENERR:
case FMTERR:
case BODY:
case FILEEOF:
goto finished;
default:
adios(NULL, "m_getfld() returned %d", state);
}
}
/*
* Override any components just in case they were included in the
* input message. Also include command-line components given here
*
* With the memory rework I've changed things so we always get copies
* of these strings; I don't like the idea that the caller of this
* function has to know to pass in already-allocated memory (and that
* it will be free()'d by us).
*/
finished:
m_getfld_state_destroy (&gstate);
cptr = fmt_findcomp ("digest");
if (cptr) {
COMPFREE(cptr);
cptr->c_text = getcpy(digest);
}
cptr = fmt_findcomp ("nmh-date");
if (cptr) {
COMPFREE(cptr);
cptr->c_text = getcpy(dtimenow (0));
}
cptr = fmt_findcomp ("nmh-from");
if (cptr) {
COMPFREE(cptr);
cptr->c_text = getcpy(from);
}
cptr = fmt_findcomp ("nmh-to");
if (cptr) {
COMPFREE(cptr);
cptr->c_text = getcpy(to);
}
cptr = fmt_findcomp ("nmh-cc");
if (cptr) {
COMPFREE(cptr);
cptr->c_text = getcpy(cc);
}
cptr = fmt_findcomp ("nmh-subject");
if (cptr) {
COMPFREE(cptr);
cptr->c_text = getcpy(subject);
}
cptr = fmt_findcomp ("fcc");
if (cptr) {
COMPFREE(cptr);
cptr->c_text = getcpy(fcc);
}
cp = m_mktemp2(NULL, invo_name, NULL, &tmp);
if (cp == NULL) {
adios(NULL, "unable to create temporary file in %s", get_temp_dir());
}
strncpy (tmpfil, cp, sizeof(tmpfil));
(void) m_unlink (tmpfil);
if ((in = dup (fileno (tmp))) == NOTOK)
adios ("dup", "unable to");
line = mh_xmalloc ((unsigned) fmtsize);
fmt_scan (fmt, line, fmtsize - 1, fmtsize, dat, NULL);
fputs (line, tmp);
free (line);
if (fclose (tmp))
adios (tmpfil, "error writing");
lseek (in, (off_t) 0, SEEK_SET);
/*
* Free any component buffers that we allocated
*/
fmt_free(fmt, 1);
return in;
}
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