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;
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)
76 register int state, i;
77 register struct comp *cptr;
78 register char *tmpbuf;
79 register char **nxtbuf;
81 register struct comp **savecomp;
82 int char_read = 0, format_len, mask;
83 char name[NAMESZ], *scanl;
87 mask = umask(~m_gmprot());
88 if ((out = fopen (drft, "w")) == NULL)
89 adios (drft, "unable to create");
93 /* get new format string */
94 cp = new_fs (form, NULL, NULL);
95 format_len = strlen (cp);
97 /* compile format string */
98 ncomps = fmt_compile (cp, &fmt) + 1;
100 if (!(nxtbuf = compbuffers = (char **)
101 calloc((size_t) ncomps, sizeof(char *))))
102 adios (NULL, "unable to allocate component buffers");
103 if (!(savecomp = used_buf = (struct comp **)
104 calloc((size_t) (ncomps+1), sizeof(struct comp *))))
105 adios (NULL, "unable to allocate component buffer stack");
106 savecomp += ncomps + 1;
107 *--savecomp = NULL; /* point at zero'd end minus 1 */
109 for (i = ncomps; i--; )
110 *nxtbuf++ = mh_xmalloc(SBUFSIZ);
112 nxtbuf = compbuffers; /* point at start */
115 for (ap = addrcomps; *ap; ap++) {
116 FINDCOMP (cptr, *ap);
118 cptr->c_type |= CT_ADDR;
122 * ignore any components killed by command line switches
125 FINDCOMP (cptr, "to");
130 FINDCOMP (cptr, "cc");
134 /* set up the "fcc" pseudo-component */
136 FINDCOMP (cptr, "fcc");
138 cptr->c_text = getcpy (fcc);
140 if ((cp = getenv("USER"))) {
141 FINDCOMP (cptr, "user");
143 cptr->c_text = getcpy(cp);
149 * pick any interesting stuff out of msg "inb"
151 for (state = FLD;;) {
152 state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb);
157 * if we're interested in this component, save a pointer
158 * to the component text, then start using our next free
159 * buffer as the component temp buffer (buffer switching
160 * saves an extra copy of the component text).
162 if ((cptr = wantcomp[CHASH(name)]))
164 if (!mh_strcasecmp(name, cptr->c_name)) {
165 char_read += msg_count;
166 if (! cptr->c_text) {
167 i = strlen(cptr->c_text = tmpbuf) - 1;
168 if (tmpbuf[i] == '\n')
173 i = strlen (cp = cptr->c_text) - 1;
175 if (cptr->c_type & CT_ADDR) {
177 cp = add (",\n\t", cp);
182 cptr->c_text = add (tmpbuf, cp);
184 while (state == FLDPLUS) {
185 state = m_getfld (state, name, tmpbuf,
187 cptr->c_text = add (tmpbuf, cptr->c_text);
188 char_read += msg_count;
192 } while ((cptr = cptr->c_next));
194 while (state == FLDPLUS)
195 state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb);
205 adios (NULL, "m_getfld() returned %d", state);
210 * format and output the header lines.
215 * if there's a "Subject" component, strip any "Re:"s off it
217 FINDCOMP (cptr, "subject")
218 if (cptr && (cp = cptr->c_text)) {
219 register char *sp = cp;
230 if (sp != cptr->c_text) {
232 cptr->c_text = getcpy (sp);
236 i = format_len + char_read + 256;
237 scanl = mh_xmalloc ((size_t) i + 2);
241 dat[3] = outputlinelen;
243 fmt_scan (fmt, scanl, i, dat);
246 fputs ("\nrepl: bad addresses:\n", out);
247 fputs ( badaddrs, out);
251 * Check if we should filter the message
252 * or add mhn directives
257 adios (drft, "error writing");
259 replfilter (inb, out, filter);
260 } else if (mime && mp) {
261 fprintf (out, "#forw [original message] +%s %s\n",
262 mp->foldpath, m_name (mp->lowsel));
267 adios (drft, "error writing");
270 /* return dynamically allocated buffers */
272 for (nxtbuf = compbuffers, i = ncomps; (cptr = *savecomp++); nxtbuf++, i--)
273 free (cptr->c_text); /* if not nxtbuf, nxtbuf already freed */
275 free (*nxtbuf++); /* free unused nxtbufs */
276 free ((char *) compbuffers);
277 free ((char *) used_buf);
280 static char *buf; /* our current working buffer */
281 static char *bufend; /* end of working buffer */
282 static char *last_dst; /* buf ptr at end of last call */
283 static unsigned int bufsiz=0; /* current size of buf */
285 #define BUFINCR 512 /* how much to expand buf when if fills */
287 #define CPY(s) { cp = (s); while ((*dst++ = *cp++)) ; --dst; }
290 * check if there's enough room in buf for str.
291 * add more mem if needed
293 #define CHECKMEM(str) \
294 if ((len = strlen (str)) >= bufend - dst) {\
296 int n = last_dst - buf;\
297 bufsiz += ((dst + len - bufend) / BUFINCR + 1) * BUFINCR;\
298 buf = mh_xrealloc (buf, bufsiz);\
301 bufend = buf + bufsiz;\
306 * fmt_scan will call this routine if the user includes the function
307 * "(formataddr {component})" in a format string. "orig" is the
308 * original contents of the string register. "str" is the address
309 * string to be formatted and concatenated onto orig. This routine
310 * returns a pointer to the concatenated address string.
312 * We try to not do a lot of malloc/copy/free's (which is why we
313 * don't call "getcpy") but still place no upper limit on the
314 * length of the result string.
317 formataddr (char *orig, char *str)
320 char baddr[BUFSIZ], error[BUFSIZ];
321 register int isgroup;
325 register struct mailname *mp = NULL;
327 /* if we don't have a buffer yet, get one */
329 buf = mh_xmalloc (BUFINCR);
330 last_dst = buf; /* XXX */
331 bufsiz = BUFINCR - 6; /* leave some slop */
332 bufend = buf + bufsiz;
335 * If "orig" points to our buffer we can just pick up where we
336 * left off. Otherwise we have to copy orig into our buffer.
340 else if (!orig || !*orig) {
344 dst = last_dst; /* XXX */
349 /* concatenate all the new addresses onto 'buf' */
350 for (isgroup = 0; (cp = getname (str)); ) {
351 if ((mp = getm (cp, dfhost, dftype, AD_NAME, error)) == NULL) {
352 snprintf (baddr, sizeof(baddr), "\t%s -- %s\n", cp, error);
353 badaddrs = add (baddr, badaddrs);
356 if (isgroup && (mp->m_gname || !mp->m_ingrp)) {
361 /* if we get here we're going to add an address */
367 CHECKMEM (mp->m_gname);
387 * fmt_scan will call this routine if the user includes the function
388 * "(concataddr {component})" in a format string. This behaves exactly
389 * like formataddr, except that it does NOT suppress duplicate addresses
392 * As an implementation detail: I thought about splitting out formataddr()
393 * into the generic part and duplicate-suppressing part, but the call to
394 * insert() was buried deep within a couple of loops and I didn't see a
395 * way to do it easily. So instead we simply set a special flag to stop
396 * the duplicate check and call formataddr().
399 concataddr(char *orig, char *str)
404 cp = formataddr(orig, str);
410 insert (struct mailname *np)
413 register struct mailname *mp;
418 if (np->m_mbox == NULL)
421 for (mp = &mq; mp->m_next; mp = mp->m_next) {
422 if (!mh_strcasecmp (np->m_host, mp->m_next->m_host)
423 && !mh_strcasecmp (np->m_mbox, mp->m_next->m_mbox))
426 if (!ccme && ismymbox (np))
430 snprintf (buffer, sizeof(buffer), "Reply to %s? ", adrformat (np));
431 if (!gans (buffer, anoyes))
448 * This function expects that argument out has been fflushed by the caller.
452 replfilter (FILE *in, FILE *out, char *filter)
461 if (access (filter, R_OK) == NOTOK)
462 adios (filter, "unable to read");
464 mhl = r1bindex (mhlproc, '/');
467 lseek (fileno(in), (off_t) 0, SEEK_SET);
469 switch (pid = m_vfork()) {
471 adios ("fork", "unable to");
474 dup2 (fileno (in), fileno (stdin));
475 dup2 (fileno (out), fileno (stdout));
478 execlp (mhlproc, mhl, "-form", filter, "-noclear", NULL);
479 errstr = strerror(errno);
480 write(2, "unable to exec ", 15);
481 write(2, mhlproc, strlen(mhlproc));
483 write(2, errstr, strlen(errstr));
488 if (pidXwait (pid, mhl))
490 fseek (out, 0L, SEEK_END);