2 ** mhl.c -- the nmh message listing program
4 ** This code is Copyright (c) 2002, by the authors of nmh. See the
5 ** COPYRIGHT file in the root directory of the nmh distribution for
6 ** complete copyright information.
10 #include <h/signals.h>
11 #include <h/addrsbr.h>
12 #include <h/fmt_scan.h>
19 ** for a component containing addresses, ADDRFMT, if COMPRESS is also
20 ** set, then addresses get split wrong (not at the spaces between commas).
21 ** To fix this correctly, putstr() should know about "atomic" strings that
22 ** must NOT be broken across lines. That's too difficult for right now
23 ** (it turns out that there are a number of degernate cases), so in
24 ** oneline(), instead of
26 ** (*onelp == '\n' && !onelp[1])
28 ** being a terminating condition,
30 ** (*onelp == '\n' && (!onelp[1] || (flags & ADDRFMT)))
32 ** is used instead. This cuts the line prematurely, and gives us a much
33 ** better chance of getting things right.
42 static struct swit switches[] = {
44 { "form formfile", 0 },
46 { "width columns", 0 },
60 #define NOCOMPONENT 0x000001 /* don't show component name */
61 #define UPPERCASE 0x000002 /* display in all upper case */
62 #define CENTER 0x000004 /* center line */
63 #define CLEARTEXT 0x000008 /* cleartext */
64 #define EXTRA 0x000010 /* an "extra" component */
65 #define HDROUTPUT 0x000020 /* already output */
66 #define LEFTADJUST 0x000040 /* left justify multiple lines */
67 #define COMPRESS 0x000080 /* compress text */
68 #define ADDRFMT 0x000100 /* contains addresses */
69 #define DATEFMT 0x000200 /* contains dates */
70 #define FORMAT 0x000400 /* parse address/date/RFC-2047 field */
71 #define INIT 0x000800 /* initialize component */
72 #define SPLIT 0x001000 /* split headers (don't concatenate) */
73 #define NONEWLINE 0x002000 /* don't write trailing newline */
74 #define LBITS "\020\01NOCOMPONENT\02UPPERCASE\03CENTER\04CLEARTEXT\05EXTRA\06HDROUTPUT\07LEFTADJUST\010COMPRESS\011ADDRFMT\012DATEFMT\013FORMAT\014INIT\015SPLIT\016NONEWLINE"
75 #define GFLAGS (NOCOMPONENT | UPPERCASE | CENTER | LEFTADJUST | COMPRESS | SPLIT)
78 char *c_name; /* component name */
79 char *c_text; /* component text */
80 char *c_ovtxt; /* text overflow indicator */
81 char *c_fstr; /* iff FORMAT */
82 struct format *c_fmt; /* .. */
83 int c_offset; /* left margin indentation */
84 int c_ovoff; /* overflow indentation */
85 int c_width; /* width of field */
86 int c_cwidth; /* width of component */
91 static struct mcomp *msghd = NULL;
92 static struct mcomp *msgtl = NULL;
93 static struct mcomp *fmthd = NULL;
94 static struct mcomp *fmttl = NULL;
96 static struct mcomp global = {
97 NULL, NULL, NULL, NULL, NULL, 0, -1, 80, -1, 0, NULL
100 static struct mcomp holder = {
101 NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0, NOCOMPONENT, NULL
109 static struct pair pairs[] = {
112 { "Sender", ADDRFMT },
113 { "Reply-To", ADDRFMT },
117 { "Resent-Date", DATEFMT },
118 { "Resent-From", ADDRFMT },
119 { "Resent-Sender", ADDRFMT },
120 { "Resent-Reply-To", ADDRFMT },
121 { "Resent-To", ADDRFMT },
122 { "Resent-Cc", ADDRFMT },
123 { "Resent-Bcc", ADDRFMT },
133 static struct triple triples[] = {
134 { "nocomponent", NOCOMPONENT, 0 },
135 { "uppercase", UPPERCASE, 0 },
136 { "nouppercase", 0, UPPERCASE },
137 { "center", CENTER, 0 },
138 { "nocenter", 0, CENTER },
139 { "leftadjust", LEFTADJUST, 0 },
140 { "noleftadjust", 0, LEFTADJUST },
141 { "compress", COMPRESS, 0 },
142 { "nocompress", 0, COMPRESS },
143 { "split", SPLIT, 0 },
144 { "nosplit", 0, SPLIT },
145 { "addrfield", ADDRFMT, DATEFMT },
146 { "datefield", DATEFMT, ADDRFMT },
147 { "newline", 0, NONEWLINE },
148 { "nonewline", NONEWLINE, 0 },
153 static int dobody = 1;
154 static int forwflg = 0;
155 static int forwall = 0;
157 static int exitstat = 0;
158 static int mhldebug = 0;
160 static unsigned int column;
165 static unsigned int wid;
169 static unsigned char *onelp;
173 static int num_ignores = 0;
174 static char *ignores[MAXARGS];
176 volatile sig_atomic_t eflag = 0;
179 ** Redefine a couple of functions.
180 ** These are undefined later in the code.
186 static void mhl_format(char *, int);
187 static int evalvar(struct mcomp *);
188 static int ptoi(char *, int *);
189 static int ptos(char *, char **);
190 static char *parse(void);
191 static void process(char *, int, int);
192 static void mhlfile(FILE *, char *, int, int);
193 static int mcomp_flags(char *);
194 static char *mcomp_add(long, char *, char *);
195 static void mcomp_format(struct mcomp *, struct mcomp *);
196 static struct mcomp *add_queue(struct mcomp **, struct mcomp **,
197 char *, char *, int);
198 static void free_queue(struct mcomp **, struct mcomp **);
199 static void putcomp(struct mcomp *, struct mcomp *, int);
200 static char *oneline(char *, long);
201 static void putstr(char *);
202 static void putch(char);
203 static void intrser(int);
205 int sc_width(void); /* from termsbr.c */
209 main(int argc, char **argv)
211 int i, width = 0, vecp = 0;
212 char *cp, *form = NULL;
213 char buf[BUFSIZ], *files[MAXARGS];
214 char **argp, **arguments;
216 setlocale(LC_ALL, "");
217 invo_name = mhbasename(argv[0]);
219 /* read user profile/context */
222 arguments = getarguments(invo_name, argc, argv, 1);
225 if ((cp = getenv("MHLDEBUG")) && *cp)
228 while ((cp = *argp++)) {
230 switch (smatch(++cp, switches)) {
232 ambigsw(cp, switches);
235 adios(NULL, "-%s unknown\n", cp);
238 snprintf(buf, sizeof(buf), "%s [switches] [files ...]", invo_name);
239 print_help(buf, switches, 1);
242 print_version(invo_name);
246 if (!(form = *argp++) || *form == '-')
247 adios(NULL, "missing argument to %s",
252 if (!(cp = *argp++) || *cp == '-')
253 adios(NULL, "missing argument to %s",
255 if ((width = atoi(cp)) < 1)
256 adios(NULL, "bad argument %s %s",
261 forwall++; /* fall */
274 mhl_format(form ? form : mhlformat, width);
277 process(NULL, 1, vecp = 1);
279 for (i = 0; i < vecp; i++)
280 process(files[i], i + 1, vecp);
284 printf("\n------- End of Forwarded Message%s\n\n",
285 vecp > 1 ? "s" : "");
289 if (ferror(stdout)) {
290 adios("output", "error writing");
298 mhl_format(char *file, int width)
302 char *ap, buffer[BUFSIZ], name[NAMESZ];
306 static dev_t dev = 0;
307 static ino_t ino = 0;
308 static time_t mtime = 0;
311 if (stat(etcpath(file), &st) != NOTOK
312 && mtime == st.st_mtime
317 free_queue(&fmthd, &fmttl);
320 if ((fp = fopen(etcpath(file), "r")) == NULL)
321 adios(file, "unable to open format file");
323 if (fstat(fileno(fp), &st) != NOTOK) {
329 global.c_ovtxt = global.c_fstr = NULL;
333 if ((i = sc_width()) > 5)
335 global.c_cwidth = -1;
339 while (vfgets(fp, &ap) == OK) {
344 if ((cp = strchr(bp, '\n')))
348 c1 = add_queue(&fmthd, &fmttl, NULL, bp + 1,
354 strncpy(name, parse(), sizeof(name));
360 ** Split this list of fields to ignore, and copy
361 ** it to the end of the current "ignores" list.
363 if (!mh_strcasecmp(name, "ignores")) {
367 /* split the fields */
368 tmparray = brkstring(getcpy(++parptr), ",",
371 ** copy pointers to split fields
374 while (tmparray[n] && num_ignores<MAXARGS-1) {
375 ignores[num_ignores++] = tmparray[n++];
377 ignores[num_ignores] = NULL;
382 if (evalvar(&global))
383 adios(NULL, "format file syntax error: %s", bp);
390 c1 = add_queue(&fmthd, &fmttl, name, NULL, INIT);
391 while (*parptr == ':' || *parptr == ',') {
394 adios(NULL, "format file syntax error: %s", bp);
396 if (!c1->c_fstr && global.c_fstr) {
397 if ((c1->c_flags & DATEFMT) &&
398 (global.c_flags & DATEFMT)) {
399 c1->c_fstr = getcpy(global.c_fstr);
400 } else if ((c1->c_flags & ADDRFMT) &&
401 (global.c_flags & ADDRFMT)) {
402 c1->c_fstr = getcpy(global.c_fstr);
408 adios(NULL, "format file syntax error: %s", bp);
414 for (c1 = fmthd; c1; c1 = c1->c_next) {
415 fprintf(stderr, "c1: name=\"%s\" text=\"%s\" ovtxt=\"%s\"\n", c1->c_name, c1->c_text, c1->c_ovtxt);
416 fprintf(stderr, "\tfstr=0x%x fmt=0x%x\n", (unsigned int)(unsigned long) c1->c_fstr, (unsigned int)(unsigned long) c1->c_fmt);
417 fprintf(stderr, "\toffset=%d ovoff=%d width=%d cwidth=%d\n", c1->c_offset, c1->c_ovoff, c1->c_width, c1->c_cwidth);
418 fprintf (stderr, "\tflags=%s\n", snprintb(buffer, sizeof(buffer), (unsigned) c1->c_flags, LBITS));
424 global.c_width = width;
425 if (global.c_width < 5)
426 global.c_width = 10000;
431 evalvar(struct mcomp *c1)
433 char *cp, name[NAMESZ];
438 strncpy(name, parse(), sizeof(name));
440 if (!mh_strcasecmp(name, "component")) {
441 if (ptos(name, &c1->c_text))
443 c1->c_flags &= ~NOCOMPONENT;
447 if (!mh_strcasecmp(name, "overflowtext"))
448 return ptos(name, &c1->c_ovtxt);
450 if (!mh_strcasecmp(name, "formatfield")) {
455 cp = concat("=", cp, NULL);
456 fmtstr = new_fs(cp, NULL);
458 c1->c_fstr = getcpy(fmtstr);
459 c1->c_flags |= FORMAT;
463 if (!mh_strcasecmp(name, "decode")) {
466 fmtstr = new_fs("=%(decode{text})", NULL);
467 c1->c_fstr = getcpy(fmtstr);
468 c1->c_flags |= FORMAT;
472 if (!mh_strcasecmp(name, "offset"))
473 return ptoi(name, &c1->c_offset);
474 if (!mh_strcasecmp(name, "overflowoffset"))
475 return ptoi(name, &c1->c_ovoff);
476 if (!mh_strcasecmp(name, "width"))
477 return ptoi(name, &c1->c_width);
478 if (!mh_strcasecmp(name, "compwidth"))
479 return ptoi(name, &c1->c_cwidth);
481 for (ap = triples; ap->t_name; ap++)
482 if (!mh_strcasecmp(ap->t_name, name)) {
483 c1->c_flags |= ap->t_on;
484 c1->c_flags &= ~ap->t_off;
493 ptoi(char *name, int *i)
497 if (*parptr++ != '=' || !*(cp = parse())) {
498 advise(NULL, "missing argument to variable %s", name);
508 ptos(char *name, char **s)
512 if (*parptr++ != '=') {
513 advise(NULL, "missing argument to variable %s", name);
517 if (*parptr != '"') {
518 for (cp = parptr; *parptr && *parptr != ':' && *parptr != ',';
522 for (cp = ++parptr; *parptr && *parptr != '"'; parptr++)
523 if (*parptr == QUOTE)
530 if ((*parptr = c) == '"')
541 static char result[NAMESZ];
543 for (cp = result; *parptr && (cp - result < NAMESZ); parptr++) {
562 process(char *fname, int ofilen, int ofilec)
568 fp = fopen(fname, "r");
570 advise(fname, "unable to open");
578 SIGNAL(SIGINT, intrser);
579 mhlfile(fp, fname, ofilen, ofilec);
581 SIGNAL(SIGINT, SIG_IGN);
586 holder.c_text = NULL;
588 free_queue(&msghd, &msgtl);
589 for (c1 = fmthd; c1; c1 = c1->c_next)
590 c1->c_flags &= ~HDROUTPUT;
595 mhlfile(FILE *fp, char *mname, int ofilen, int ofilec)
598 struct mcomp *c1, *c2, *c3;
599 char **ip, name[NAMESZ], buf[BUFSIZ];
604 printf(" Forwarded Message%s", ofilec > 1 ? "s" : "");
606 printf(" Message %d", ofilen);
608 } else if (ofilec > 1) {
612 printf(">>> %s\n\n", mname);
615 for (state = FLD;!eflag;) {
616 switch (state = m_getfld(state, name, buf, sizeof(buf), fp)) {
619 for (ip = ignores; *ip; ip++)
620 if (!mh_strcasecmp(name, *ip)) {
621 while (state == FLDPLUS)
622 state = m_getfld(state, name, buf, sizeof(buf), fp);
628 for (c2 = fmthd; c2; c2 = c2->c_next)
629 if (!mh_strcasecmp(c2->c_name, name))
632 if (!((c3 = c2 ? c2 : &global)->c_flags & SPLIT))
633 for (c1 = msghd; c1; c1 = c1->c_next)
634 if (!mh_strcasecmp(c1->c_name,
636 c1->c_text = mcomp_add(c1->c_flags, buf, c1->c_text);
640 c1 = add_queue(&msghd, &msgtl, name, buf, 0);
641 while (state == FLDPLUS) {
642 state = m_getfld(state, name, buf,
644 c1->c_text = add(buf, c1->c_text);
647 c1->c_flags |= EXTRA;
653 for (c1 = fmthd; c1; c1 = c1->c_next) {
654 if (c1->c_flags & CLEARTEXT) {
655 putcomp(c1, c1, ONECOMP);
658 if (!mh_strcasecmp(c1->c_name, "messagename")) {
659 holder.c_text = concat("(Message ",
661 putcomp(c1, &holder, ONECOMP);
663 holder.c_text = NULL;
666 if (!mh_strcasecmp(c1->c_name, "extras")) {
667 for (c2 = msghd; c2; c2 = c2->c_next)
668 if (c2->c_flags & EXTRA)
669 putcomp(c1, c2, TWOCOMP);
672 if (dobody && !mh_strcasecmp(c1->c_name, "body")) {
673 holder.c_text = mh_xmalloc(sizeof(buf));
674 strncpy(holder.c_text, buf, sizeof(buf));
675 while (state == BODY) {
676 putcomp(c1, &holder, BODYCOMP);
677 state = m_getfld(state, name, holder.c_text, sizeof(buf), fp);
680 holder.c_text = NULL;
683 for (c2 = msghd; c2; c2 = c2->c_next)
684 if (!mh_strcasecmp(c2->c_name,
686 putcomp(c1, c2, ONECOMP);
687 if (!(c1->c_flags & SPLIT))
695 advise(NULL, "format error in message %s", mname);
700 adios(NULL, "getfld() returned %d", state);
707 mcomp_flags(char *name)
711 for (ap = pairs; ap->p_name; ap++)
712 if (!mh_strcasecmp(ap->p_name, name))
713 return (ap->p_flags);
720 mcomp_add(long flags, char *s1, char *s2)
724 if (!(flags & ADDRFMT))
727 if (s2 && *(dp = s2 + strlen(s2) - 1) == '\n')
730 return add(s1, add(",\n", s2));
737 struct pqpair *pq_next;
742 mcomp_format(struct mcomp *c1, struct mcomp *c2)
746 char buffer[BUFSIZ], error[BUFSIZ];
748 struct pqpair *p, *q;
757 dat[3] = sizeof(buffer) - 1;
759 fmt_compile(c1->c_fstr, &c1->c_fmt);
761 if (!(c1->c_flags & ADDRFMT)) {
762 FINDCOMP(cptr, "text");
765 if ((cp = strrchr(ap, '\n'))) /* drop ending newline */
769 fmt_scan(c1->c_fmt, buffer, sizeof(buffer) - 1, dat);
770 /* Don't need to append a newline, dctime() already did */
771 c2->c_text = getcpy(buffer);
777 (q = &pq)->pq_next = NULL;
778 while ((cp = getname(ap))) {
779 if ((p = (struct pqpair *)
780 calloc((size_t) 1, sizeof(*p))) == NULL)
781 adios(NULL, "unable to allocate pqpair memory");
783 if ((mp = getm(cp, NULL, 0, AD_NAME, error)) == NULL) {
784 p->pq_text = getcpy(cp);
785 p->pq_error = getcpy(error);
787 p->pq_text = getcpy(mp->m_text);
790 q = (q->pq_next = p);
793 for (p = pq.pq_next; p; p = q) {
794 FINDCOMP(cptr, "text");
796 cptr->c_text = p->pq_text;
797 FINDCOMP(cptr, "error");
799 cptr->c_text = p->pq_error;
801 fmt_scan(c1->c_fmt, buffer, sizeof(buffer) - 1, dat);
804 c2->c_text = add(",\n", c2->c_text);
805 if (*(cp = buffer + strlen(buffer) - 1) == '\n')
807 c2->c_text = add(buffer, c2->c_text);
817 c2->c_text = add("\n", c2->c_text);
822 static struct mcomp *
823 add_queue(struct mcomp **head, struct mcomp **tail, char *name,
824 char *text, int flags)
828 if ((c1 = (struct mcomp *) calloc((size_t) 1, sizeof(*c1))) == NULL)
829 adios(NULL, "unable to allocate comp memory");
831 c1->c_flags = flags & ~INIT;
832 if ((c1->c_name = name ? getcpy(name) : NULL))
833 c1->c_flags |= mcomp_flags(c1->c_name);
834 c1->c_text = text ? getcpy(text) : NULL;
837 c1->c_ovtxt = getcpy(global.c_ovtxt);
838 c1->c_offset = global.c_offset;
839 c1->c_ovoff = global. c_ovoff;
841 c1->c_cwidth = global.c_cwidth;
842 c1->c_flags |= global.c_flags & GFLAGS;
847 (*tail)->c_next = c1;
855 free_queue(struct mcomp **head, struct mcomp **tail)
857 struct mcomp *c1, *c2;
859 for (c1 = *head; c1; c1 = c2) {
870 free((char *) c1->c_fmt);
874 *head = *tail = NULL;
879 putcomp(struct mcomp *c1, struct mcomp *c2, int flag)
886 wid = c1->c_width ? c1->c_width : global.c_width;
887 ovoff = (c1->c_ovoff >= 0 ? c1->c_ovoff : global.c_ovoff)
889 if ((ovtxt = c1->c_ovtxt ? c1->c_ovtxt : global.c_ovtxt) == NULL)
891 if (wid < ovoff + strlen(ovtxt) + 5)
892 adios(NULL, "component: %s width(%d) too small for overflow(%d)", c1->c_name, wid, ovoff + strlen(ovtxt) + 5);
895 if (c1->c_flags & CLEARTEXT) {
901 if (c1->c_fstr && (c1->c_flags & (ADDRFMT | DATEFMT | FORMAT)))
902 mcomp_format(c1, c2);
904 if (c1->c_flags & CENTER) {
905 count = (c1->c_width ? c1->c_width : global.c_width)
906 - c1->c_offset - strlen(c2->c_text);
907 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT))
908 count -= strlen(c1->c_text ? c1->c_text : c1->c_name)
910 lm = c1->c_offset + (count / 2);
916 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT)) {
917 if (c1->c_flags & UPPERCASE) /* uppercase component also */
918 for (cp = (c1->c_text ? c1->c_text : c1->c_name); *cp; cp++)
921 putstr(c1->c_text ? c1->c_text : c1->c_name);
922 if (flag != BODYCOMP) {
924 if (!(c1->c_flags & SPLIT))
925 c1->c_flags |= HDROUTPUT;
928 if ((count = c1->c_cwidth -
929 strlen(c1->c_text ? c1->c_text : c1->c_name) - 2) > 0)
933 c1->c_flags |= HDROUTPUT; /* for BODYCOMP */
936 if (flag == TWOCOMP && !(c2->c_flags & HDROUTPUT)
937 && !(c2->c_flags & NOCOMPONENT)) {
938 if (c1->c_flags & UPPERCASE)
939 for (cp = c2->c_name; *cp; cp++)
944 if (!(c1->c_flags & SPLIT))
945 c2->c_flags |= HDROUTPUT;
948 if ((count = c1->c_cwidth - strlen(c2->c_name) - 2) > 0)
952 if (c1->c_flags & UPPERCASE)
953 for (cp = c2->c_text; *cp; cp++)
960 count = (c1->c_cwidth >= 0) ? c1->c_cwidth :
961 (int)strlen(c2->c_name) + 2;
963 count = (c1->c_cwidth >= 0) ? (size_t)c1->c_cwidth :
965 c1->c_text : c1->c_name) + 2;
967 count += c1->c_offset;
969 if ((cp = oneline(c2->c_text, c1->c_flags)))
973 while ((cp = oneline(c2->c_text, c1->c_flags))) {
975 if (flag == BODYCOMP && !(c1->c_flags & NOCOMPONENT))
976 putstr(c1->c_text ? c1->c_text : c1->c_name);
982 if (flag == BODYCOMP && term == '\n')
983 c1->c_flags &= ~HDROUTPUT; /* Buffer ended on a newline */
988 oneline(char *stuff, long flags)
996 return (onelp = NULL);
1000 if (flags & COMPRESS) {
1001 for (spc = 1, cp = ret; *onelp; onelp++)
1002 if (isspace(*onelp)) {
1003 if (*onelp == '\n' &&
1005 (flags & ADDRFMT))) {
1020 while (*onelp && *onelp != '\n')
1022 if (*onelp == '\n') {
1026 if (flags & LEFTADJUST)
1027 while (*ret == ' ' || *ret == '\t')
1030 if (*onelp == 0 && term == '\n' && (flags & NONEWLINE))
1038 putstr(char *string)
1040 if (!column && lm > 0) {
1076 ** If we are forwarding this message, and the first
1077 ** column contains a dash, then add a dash and a space.
1079 if (column == 0 && forwflg && ch == '-') {
1088 if (column >= wid) {
1092 putstr(ovtxt ? ovtxt : "");