3 * replsbr.c -- routines to help repl along...
5 * This code is Copyright (c) 2002, by the authors of nmh. See the
6 * COPYRIGHT file in the root directory of the nmh distribution for
7 * complete copyright information.
11 #include <h/addrsbr.h>
12 #include <h/fmt_scan.h>
14 #include <sys/file.h> /* L_SET */
17 extern short ccto; /* from repl.c */
24 static char *badaddrs = NULL;
25 static char *dfhost = NULL;
27 static struct mailname mq = { NULL };
28 static int nodupcheck = 0; /* If set, no check for duplicates */
31 * Buffer size for content part of header fields.
32 * We want this to be large enough so that we don't
33 * do a lot of extra FLDPLUS calls on m_getfld but
34 * small enough so that we don't snarf the entire
35 * message body when we're not going to use any of it.
39 static struct format *fmt;
41 static int ncomps = 0; /* # of interesting components */
42 static char **compbuffers = NULL; /* buffers for component text */
43 static struct comp **used_buf = NULL; /* stack for comp that use buffers */
45 static int dat[5]; /* aux. data for format routine */
47 static char *addrcomps[] = {
66 static int insert (struct mailname *);
67 static void replfilter (FILE *, FILE *, char *);
71 replout (FILE *inb, char *msg, char *drft, struct msgs *mp, int outputlinelen,
72 int mime, char *form, char *filter, char *fcc)
74 register int state, i;
75 register struct comp *cptr;
76 register char *tmpbuf;
77 register char **nxtbuf;
79 register struct comp **savecomp;
80 int char_read = 0, format_len, mask;
81 char name[NAMESZ], *scanl;
85 mask = umask(~m_gmprot());
86 if ((out = fopen (drft, "w")) == NULL)
87 adios (drft, "unable to create");
91 /* get new format string */
92 cp = new_fs (form, NULL, NULL);
93 format_len = strlen (cp);
95 /* compile format string */
96 ncomps = fmt_compile (cp, &fmt) + 1;
98 if (!(nxtbuf = compbuffers = (char **)
99 calloc((size_t) ncomps, sizeof(char *))))
100 adios (NULL, "unable to allocate component buffers");
101 if (!(savecomp = used_buf = (struct comp **)
102 calloc((size_t) (ncomps+1), sizeof(struct comp *))))
103 adios (NULL, "unable to allocate component buffer stack");
104 savecomp += ncomps + 1;
105 *--savecomp = NULL; /* point at zero'd end minus 1 */
107 for (i = ncomps; i--; )
108 *nxtbuf++ = mh_xmalloc(SBUFSIZ);
110 nxtbuf = compbuffers; /* point at start */
113 for (ap = addrcomps; *ap; ap++) {
114 FINDCOMP (cptr, *ap);
116 cptr->c_type |= CT_ADDR;
120 * ignore any components killed by command line switches
123 FINDCOMP (cptr, "to");
128 FINDCOMP (cptr, "cc");
132 /* set up the "fcc" pseudo-component */
134 FINDCOMP (cptr, "fcc");
136 cptr->c_text = getcpy (fcc);
138 if ((cp = getenv("USER"))) {
139 FINDCOMP (cptr, "user");
141 cptr->c_text = getcpy(cp);
147 * pick any interesting stuff out of msg "inb"
149 for (state = FLD;;) {
150 state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb);
155 * if we're interested in this component, save a pointer
156 * to the component text, then start using our next free
157 * buffer as the component temp buffer (buffer switching
158 * saves an extra copy of the component text).
160 if ((cptr = wantcomp[CHASH(name)]))
162 if (!mh_strcasecmp(name, cptr->c_name)) {
163 char_read += msg_count;
164 if (! cptr->c_text) {
165 i = strlen(cptr->c_text = tmpbuf) - 1;
166 if (tmpbuf[i] == '\n')
171 i = strlen (cp = cptr->c_text) - 1;
173 if (cptr->c_type & CT_ADDR) {
175 cp = add (",\n\t", cp);
180 cptr->c_text = add (tmpbuf, cp);
182 while (state == FLDPLUS) {
183 state = m_getfld (state, name, tmpbuf,
185 cptr->c_text = add (tmpbuf, cptr->c_text);
186 char_read += msg_count;
190 } while ((cptr = cptr->c_next));
192 while (state == FLDPLUS)
193 state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb);
203 adios (NULL, "m_getfld() returned %d", state);
208 * format and output the header lines.
213 * if there's a "Subject" component, strip any "Re:"s off it
215 FINDCOMP (cptr, "subject")
216 if (cptr && (cp = cptr->c_text)) {
217 register char *sp = cp;
228 if (sp != cptr->c_text) {
230 cptr->c_text = getcpy (sp);
234 i = format_len + char_read + 256;
235 scanl = mh_xmalloc ((size_t) i + 2);
239 dat[3] = outputlinelen;
241 fmt_scan (fmt, scanl, i, dat);
244 fputs ("\nrepl: bad addresses:\n", out);
245 fputs ( badaddrs, out);
249 * Check if we should filter the message
250 * or add mhn directives
255 adios (drft, "error writing");
257 replfilter (inb, out, filter);
258 } else if (mime && mp) {
259 fprintf (out, "#forw [original message] +%s %s\n",
260 mp->foldpath, m_name (mp->lowsel));
265 adios (drft, "error writing");
268 /* return dynamically allocated buffers */
270 for (nxtbuf = compbuffers, i = ncomps; (cptr = *savecomp++); nxtbuf++, i--)
271 free (cptr->c_text); /* if not nxtbuf, nxtbuf already freed */
273 free (*nxtbuf++); /* free unused nxtbufs */
274 free ((char *) compbuffers);
275 free ((char *) used_buf);
278 static char *buf; /* our current working buffer */
279 static char *bufend; /* end of working buffer */
280 static char *last_dst; /* buf ptr at end of last call */
281 static unsigned int bufsiz=0; /* current size of buf */
283 #define BUFINCR 512 /* how much to expand buf when if fills */
285 #define CPY(s) { cp = (s); while ((*dst++ = *cp++)) ; --dst; }
288 * check if there's enough room in buf for str.
289 * add more mem if needed
291 #define CHECKMEM(str) \
292 if ((len = strlen (str)) >= bufend - dst) {\
294 int n = last_dst - buf;\
295 bufsiz += ((dst + len - bufend) / BUFINCR + 1) * BUFINCR;\
296 buf = mh_xrealloc (buf, bufsiz);\
299 bufend = buf + bufsiz;\
304 * fmt_scan will call this routine if the user includes the function
305 * "(formataddr {component})" in a format string. "orig" is the
306 * original contents of the string register. "str" is the address
307 * string to be formatted and concatenated onto orig. This routine
308 * returns a pointer to the concatenated address string.
310 * We try to not do a lot of malloc/copy/free's (which is why we
311 * don't call "getcpy") but still place no upper limit on the
312 * length of the result string.
315 formataddr (char *orig, char *str)
318 char baddr[BUFSIZ], error[BUFSIZ];
319 register int isgroup;
323 register struct mailname *mp = NULL;
325 /* if we don't have a buffer yet, get one */
327 buf = mh_xmalloc (BUFINCR);
328 last_dst = buf; /* XXX */
329 bufsiz = BUFINCR - 6; /* leave some slop */
330 bufend = buf + bufsiz;
333 * If "orig" points to our buffer we can just pick up where we
334 * left off. Otherwise we have to copy orig into our buffer.
338 else if (!orig || !*orig) {
342 dst = last_dst; /* XXX */
347 /* concatenate all the new addresses onto 'buf' */
348 for (isgroup = 0; (cp = getname (str)); ) {
349 if ((mp = getm (cp, dfhost, dftype, AD_NAME, error)) == NULL) {
350 snprintf (baddr, sizeof(baddr), "\t%s -- %s\n", cp, error);
351 badaddrs = add (baddr, badaddrs);
354 if (isgroup && (mp->m_gname || !mp->m_ingrp)) {
359 /* if we get here we're going to add an address */
365 CHECKMEM (mp->m_gname);
385 * fmt_scan will call this routine if the user includes the function
386 * "(concataddr {component})" in a format string. This behaves exactly
387 * like formataddr, except that it does NOT suppress duplicate addresses
390 * As an implementation detail: I thought about splitting out formataddr()
391 * into the generic part and duplicate-suppressing part, but the call to
392 * insert() was buried deep within a couple of loops and I didn't see a
393 * way to do it easily. So instead we simply set a special flag to stop
394 * the duplicate check and call formataddr().
397 concataddr(char *orig, char *str)
402 cp = formataddr(orig, str);
408 insert (struct mailname *np)
411 register struct mailname *mp;
416 if (np->m_mbox == NULL)
419 for (mp = &mq; mp->m_next; mp = mp->m_next) {
420 if (!mh_strcasecmp (np->m_host, mp->m_next->m_host)
421 && !mh_strcasecmp (np->m_mbox, mp->m_next->m_mbox))
424 if (!ccme && ismymbox (np))
428 snprintf (buffer, sizeof(buffer), "Reply to %s? ", adrformat (np));
429 if (!gans (buffer, anoyes))
446 * This function expects that argument out has been fflushed by the caller.
450 replfilter (FILE *in, FILE *out, char *filter)
459 if (access (filter, R_OK) == NOTOK)
460 adios (filter, "unable to read");
462 mhl = r1bindex (mhlproc, '/');
465 lseek (fileno(in), (off_t) 0, SEEK_SET);
467 switch (pid = vfork ()) {
469 adios ("fork", "unable to");
472 dup2 (fileno (in), fileno (stdin));
473 dup2 (fileno (out), fileno (stdout));
476 execlp (mhlproc, mhl, "-form", filter, "-noclear", NULL);
477 errstr = strerror(errno);
478 write(2, "unable to exec ", 15);
479 write(2, mhlproc, strlen(mhlproc));
481 write(2, errstr, strlen(errstr));
486 if (pidXwait (pid, mhl))
488 fseek (out, 0L, SEEK_END);