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>
20 ** for a component containing addresses, ADDRFMT, if COMPRESS is also
21 ** set, then addresses get split wrong (not at the spaces between commas).
22 ** To fix this correctly, putstr() should know about "atomic" strings that
23 ** must NOT be broken across lines. That's too difficult for right now
24 ** (it turns out that there are a number of degernate cases), so in
25 ** oneline(), instead of
27 ** (*onelp == '\n' && !onelp[1])
29 ** being a terminating condition,
31 ** (*onelp == '\n' && (!onelp[1] || (flags & ADDRFMT)))
33 ** is used instead. This cuts the line prematurely, and gives us a much
34 ** better chance of getting things right.
43 static struct swit switches[] = {
45 { "form formfile", 0 },
47 { "width columns", 0 },
61 #define NOCOMPONENT 0x000001 /* don't show component name */
62 #define UPPERCASE 0x000002 /* display in all upper case */
63 #define CENTER 0x000004 /* center line */
64 #define CLEARTEXT 0x000008 /* cleartext */
65 #define EXTRA 0x000010 /* an "extra" component */
66 #define HDROUTPUT 0x000020 /* already output */
67 #define LEFTADJUST 0x000040 /* left justify multiple lines */
68 #define COMPRESS 0x000080 /* compress text */
69 #define ADDRFMT 0x000100 /* contains addresses */
70 #define DATEFMT 0x000200 /* contains dates */
71 #define FORMAT 0x000400 /* parse address/date/RFC-2047 field */
72 #define INIT 0x000800 /* initialize component */
73 #define SPLIT 0x001000 /* split headers (don't concatenate) */
74 #define NONEWLINE 0x002000 /* don't write trailing newline */
75 #define LBITS "\020\01NOCOMPONENT\02UPPERCASE\03CENTER\04CLEARTEXT\05EXTRA\06HDROUTPUT\07LEFTADJUST\010COMPRESS\011ADDRFMT\012DATEFMT\013FORMAT\014INIT\015SPLIT\016NONEWLINE"
76 #define GFLAGS (NOCOMPONENT | UPPERCASE | CENTER | LEFTADJUST | COMPRESS | SPLIT)
79 char *c_name; /* component name */
80 char *c_text; /* component text */
81 char *c_ovtxt; /* text overflow indicator */
82 char *c_fstr; /* iff FORMAT */
83 struct format *c_fmt; /* .. */
84 int c_offset; /* left margin indentation */
85 int c_ovoff; /* overflow indentation */
86 int c_width; /* width of field */
87 int c_cwidth; /* width of component */
92 static struct mcomp *msghd = NULL;
93 static struct mcomp *msgtl = NULL;
94 static struct mcomp *fmthd = NULL;
95 static struct mcomp *fmttl = NULL;
97 static struct mcomp global = {
98 NULL, NULL, NULL, NULL, NULL, 0, -1, 80, -1, 0, NULL
101 static struct mcomp holder = {
102 NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0, NOCOMPONENT, NULL
110 static struct pair pairs[] = {
113 { "Sender", ADDRFMT },
114 { "Reply-To", ADDRFMT },
118 { "Resent-Date", DATEFMT },
119 { "Resent-From", ADDRFMT },
120 { "Resent-Sender", ADDRFMT },
121 { "Resent-Reply-To", ADDRFMT },
122 { "Resent-To", ADDRFMT },
123 { "Resent-Cc", ADDRFMT },
124 { "Resent-Bcc", ADDRFMT },
134 static struct triple triples[] = {
135 { "nocomponent", NOCOMPONENT, 0 },
136 { "uppercase", UPPERCASE, 0 },
137 { "nouppercase", 0, UPPERCASE },
138 { "center", CENTER, 0 },
139 { "nocenter", 0, CENTER },
140 { "leftadjust", LEFTADJUST, 0 },
141 { "noleftadjust", 0, LEFTADJUST },
142 { "compress", COMPRESS, 0 },
143 { "nocompress", 0, COMPRESS },
144 { "split", SPLIT, 0 },
145 { "nosplit", 0, SPLIT },
146 { "addrfield", ADDRFMT, DATEFMT },
147 { "datefield", DATEFMT, ADDRFMT },
148 { "newline", 0, NONEWLINE },
149 { "nonewline", NONEWLINE, 0 },
154 static int dobody = 1;
155 static int forwflg = 0;
156 static int forwall = 0;
158 static int exitstat = 0;
159 static int mhldebug = 0;
161 static unsigned int column;
166 static unsigned int wid;
170 static unsigned char *onelp;
174 static int num_ignores = 0;
175 static char *ignores[MAXARGS];
180 ** Redefine a couple of functions.
181 ** These are undefined later in the code.
187 static void mhl_format(char *, int);
188 static int evalvar(struct mcomp *);
189 static int ptoi(char *, int *);
190 static int ptos(char *, char **);
191 static char *parse(void);
192 static void process(char *, int, int);
193 static void mhlfile(FILE *, char *, int, int);
194 static int mcomp_flags(char *);
195 static char *mcomp_add(long, char *, char *);
196 static void mcomp_format(struct mcomp *, struct mcomp *);
197 static struct mcomp *add_queue(struct mcomp **, struct mcomp **,
198 char *, char *, int);
199 static void free_queue(struct mcomp **, struct mcomp **);
200 static void putcomp(struct mcomp *, struct mcomp *, int);
201 static char *oneline(char *, long);
202 static void putstr(char *);
203 static void putch(char);
204 static void intrser(int);
206 int sc_width(void); /* from termsbr.c */
210 main(int argc, char **argv)
212 int i, width = 0, vecp = 0;
213 char *cp, *form = NULL;
214 char buf[BUFSIZ], *files[MAXARGS];
215 char **argp, **arguments;
217 setlocale(LC_ALL, "");
218 invo_name = mhbasename(argv[0]);
220 /* read user profile/context */
223 arguments = getarguments(invo_name, argc, argv, 1);
226 if ((cp = getenv("MHLDEBUG")) && *cp)
229 while ((cp = *argp++)) {
231 switch (smatch(++cp, switches)) {
233 ambigsw(cp, switches);
236 adios(NULL, "-%s unknown\n", cp);
239 snprintf(buf, sizeof(buf), "%s [switches] [files ...]", invo_name);
240 print_help(buf, switches, 1);
243 print_version(invo_name);
247 if (!(form = *argp++) || *form == '-')
248 adios(NULL, "missing argument to %s",
253 if (!(cp = *argp++) || *cp == '-')
254 adios(NULL, "missing argument to %s",
256 if ((width = atoi(cp)) < 1)
257 adios(NULL, "bad argument %s %s",
262 forwall++; /* fall */
275 mhl_format(form ? form : mhlformat, width);
278 process(NULL, 1, vecp = 1);
280 for (i = 0; i < vecp; i++)
281 process(files[i], i + 1, vecp);
285 printf("\n------- End of Forwarded Message%s\n\n",
286 vecp > 1 ? "s" : "");
290 if (ferror(stdout)) {
291 adios("output", "error writing");
299 mhl_format(char *file, int width)
303 char *ap, buffer[BUFSIZ], name[NAMESZ];
307 static dev_t dev = 0;
308 static ino_t ino = 0;
309 static time_t mtime = 0;
312 if (stat(etcpath(file), &st) != NOTOK
313 && mtime == st.st_mtime
318 free_queue(&fmthd, &fmttl);
321 if ((fp = fopen(etcpath(file), "r")) == NULL)
322 adios(file, "unable to open format file");
324 if (fstat(fileno(fp), &st) != NOTOK) {
330 global.c_ovtxt = global.c_fstr = NULL;
334 if ((i = sc_width()) > 5)
336 global.c_cwidth = -1;
340 while (vfgets(fp, &ap) == OK) {
345 if ((cp = strchr(bp, '\n')))
349 c1 = add_queue(&fmthd, &fmttl, NULL, bp + 1,
355 strncpy(name, parse(), sizeof(name));
361 ** Split this list of fields to ignore, and copy
362 ** it to the end of the current "ignores" list.
364 if (!mh_strcasecmp(name, "ignores")) {
368 /* split the fields */
369 tmparray = brkstring(getcpy(++parptr), ",",
372 ** copy pointers to split fields
375 while (tmparray[n] && num_ignores<MAXARGS-1) {
376 ignores[num_ignores++] = tmparray[n++];
378 ignores[num_ignores] = NULL;
383 if (evalvar(&global))
384 adios(NULL, "format file syntax error: %s", bp);
391 c1 = add_queue(&fmthd, &fmttl, name, NULL, INIT);
392 while (*parptr == ':' || *parptr == ',') {
395 adios(NULL, "format file syntax error: %s", bp);
397 if (!c1->c_fstr && global.c_fstr) {
398 if ((c1->c_flags & DATEFMT) &&
399 (global.c_flags & DATEFMT)) {
400 c1->c_fstr = getcpy(global.c_fstr);
401 } else if ((c1->c_flags & ADDRFMT) &&
402 (global.c_flags & ADDRFMT)) {
403 c1->c_fstr = getcpy(global.c_fstr);
409 adios(NULL, "format file syntax error: %s", bp);
415 for (c1 = fmthd; c1; c1 = c1->c_next) {
416 fprintf(stderr, "c1: name=\"%s\" text=\"%s\" ovtxt=\"%s\"\n", c1->c_name, c1->c_text, c1->c_ovtxt);
417 fprintf(stderr, "\tfstr=0x%x fmt=0x%x\n", (unsigned int)(unsigned long) c1->c_fstr, (unsigned int)(unsigned long) c1->c_fmt);
418 fprintf(stderr, "\toffset=%d ovoff=%d width=%d cwidth=%d\n", c1->c_offset, c1->c_ovoff, c1->c_width, c1->c_cwidth);
419 fprintf (stderr, "\tflags=%s\n", snprintb(buffer, sizeof(buffer), (unsigned) c1->c_flags, LBITS));
425 global.c_width = width;
426 if (global.c_width < 5)
427 global.c_width = 10000;
432 evalvar(struct mcomp *c1)
434 char *cp, name[NAMESZ];
439 strncpy(name, parse(), sizeof(name));
441 if (!mh_strcasecmp(name, "component")) {
442 if (ptos(name, &c1->c_text))
444 c1->c_flags &= ~NOCOMPONENT;
448 if (!mh_strcasecmp(name, "overflowtext"))
449 return ptos(name, &c1->c_ovtxt);
451 if (!mh_strcasecmp(name, "formatfield")) {
456 cp = concat("=", cp, NULL);
457 fmtstr = new_fs(cp, NULL);
459 c1->c_fstr = getcpy(fmtstr);
460 c1->c_flags |= FORMAT;
464 if (!mh_strcasecmp(name, "decode")) {
467 fmtstr = new_fs("=%(decode{text})", NULL);
468 c1->c_fstr = getcpy(fmtstr);
469 c1->c_flags |= FORMAT;
473 if (!mh_strcasecmp(name, "offset"))
474 return ptoi(name, &c1->c_offset);
475 if (!mh_strcasecmp(name, "overflowoffset"))
476 return ptoi(name, &c1->c_ovoff);
477 if (!mh_strcasecmp(name, "width"))
478 return ptoi(name, &c1->c_width);
479 if (!mh_strcasecmp(name, "compwidth"))
480 return ptoi(name, &c1->c_cwidth);
482 for (ap = triples; ap->t_name; ap++)
483 if (!mh_strcasecmp(ap->t_name, name)) {
484 c1->c_flags |= ap->t_on;
485 c1->c_flags &= ~ap->t_off;
494 ptoi(char *name, int *i)
498 if (*parptr++ != '=' || !*(cp = parse())) {
499 advise(NULL, "missing argument to variable %s", name);
509 ptos(char *name, char **s)
513 if (*parptr++ != '=') {
514 advise(NULL, "missing argument to variable %s", name);
518 if (*parptr != '"') {
519 for (cp = parptr; *parptr && *parptr != ':' && *parptr != ',';
523 for (cp = ++parptr; *parptr && *parptr != '"'; parptr++)
524 if (*parptr == QUOTE)
531 if ((*parptr = c) == '"')
542 static char result[NAMESZ];
544 for (cp = result; *parptr && (cp - result < NAMESZ); parptr++) {
563 process(char *fname, int ofilen, int ofilec)
568 switch (setjmp(env)) {
571 fp = fopen(fname, "r");
573 advise(fname, "unable to open");
581 SIGNAL(SIGINT, intrser);
582 mhlfile(fp, fname, ofilen, ofilec);
585 SIGNAL(SIGINT, SIG_IGN);
590 holder.c_text = NULL;
592 free_queue(&msghd, &msgtl);
593 for (c1 = fmthd; c1; c1 = c1->c_next)
594 c1->c_flags &= ~HDROUTPUT;
601 mhlfile(FILE *fp, char *mname, int ofilen, int ofilec)
604 struct mcomp *c1, *c2, *c3;
605 char **ip, name[NAMESZ], buf[BUFSIZ];
610 printf(" Forwarded Message%s", ofilec > 1 ? "s" : "");
612 printf(" Message %d", ofilen);
614 } else if (ofilec > 1) {
618 printf(">>> %s\n\n", mname);
621 for (state = FLD;;) {
622 switch (state = m_getfld(state, name, buf, sizeof(buf), fp)) {
625 for (ip = ignores; *ip; ip++)
626 if (!mh_strcasecmp(name, *ip)) {
627 while (state == FLDPLUS)
628 state = m_getfld(state, name, buf, sizeof(buf), fp);
634 for (c2 = fmthd; c2; c2 = c2->c_next)
635 if (!mh_strcasecmp(c2->c_name, name))
638 if (!((c3 = c2 ? c2 : &global)->c_flags & SPLIT))
639 for (c1 = msghd; c1; c1 = c1->c_next)
640 if (!mh_strcasecmp(c1->c_name,
642 c1->c_text = mcomp_add(c1->c_flags, buf, c1->c_text);
646 c1 = add_queue(&msghd, &msgtl, name, buf, 0);
647 while (state == FLDPLUS) {
648 state = m_getfld(state, name, buf,
650 c1->c_text = add(buf, c1->c_text);
653 c1->c_flags |= EXTRA;
659 for (c1 = fmthd; c1; c1 = c1->c_next) {
660 if (c1->c_flags & CLEARTEXT) {
661 putcomp(c1, c1, ONECOMP);
664 if (!mh_strcasecmp(c1->c_name, "messagename")) {
665 holder.c_text = concat("(Message ",
667 putcomp(c1, &holder, ONECOMP);
669 holder.c_text = NULL;
672 if (!mh_strcasecmp(c1->c_name, "extras")) {
673 for (c2 = msghd; c2; c2 = c2->c_next)
674 if (c2->c_flags & EXTRA)
675 putcomp(c1, c2, TWOCOMP);
678 if (dobody && !mh_strcasecmp(c1->c_name, "body")) {
679 holder.c_text = mh_xmalloc(sizeof(buf));
680 strncpy(holder.c_text, buf, sizeof(buf));
681 while (state == BODY) {
682 putcomp(c1, &holder, BODYCOMP);
683 state = m_getfld(state, name, holder.c_text, sizeof(buf), fp);
686 holder.c_text = NULL;
689 for (c2 = msghd; c2; c2 = c2->c_next)
690 if (!mh_strcasecmp(c2->c_name,
692 putcomp(c1, c2, ONECOMP);
693 if (!(c1->c_flags & SPLIT))
701 advise(NULL, "format error in message %s", mname);
706 adios(NULL, "getfld() returned %d", state);
713 mcomp_flags(char *name)
717 for (ap = pairs; ap->p_name; ap++)
718 if (!mh_strcasecmp(ap->p_name, name))
719 return (ap->p_flags);
726 mcomp_add(long flags, char *s1, char *s2)
730 if (!(flags & ADDRFMT))
733 if (s2 && *(dp = s2 + strlen(s2) - 1) == '\n')
736 return add(s1, add(",\n", s2));
743 struct pqpair *pq_next;
748 mcomp_format(struct mcomp *c1, struct mcomp *c2)
752 char buffer[BUFSIZ], error[BUFSIZ];
754 struct pqpair *p, *q;
763 dat[3] = sizeof(buffer) - 1;
765 fmt_compile(c1->c_fstr, &c1->c_fmt);
767 if (!(c1->c_flags & ADDRFMT)) {
768 FINDCOMP(cptr, "text");
771 if ((cp = strrchr(ap, '\n'))) /* drop ending newline */
775 fmt_scan(c1->c_fmt, buffer, sizeof(buffer) - 1, dat);
776 /* Don't need to append a newline, dctime() already did */
777 c2->c_text = getcpy(buffer);
783 (q = &pq)->pq_next = NULL;
784 while ((cp = getname(ap))) {
785 if ((p = (struct pqpair *)
786 calloc((size_t) 1, sizeof(*p))) == NULL)
787 adios(NULL, "unable to allocate pqpair memory");
789 if ((mp = getm(cp, NULL, 0, AD_NAME, error)) == NULL) {
790 p->pq_text = getcpy(cp);
791 p->pq_error = getcpy(error);
793 p->pq_text = getcpy(mp->m_text);
796 q = (q->pq_next = p);
799 for (p = pq.pq_next; p; p = q) {
800 FINDCOMP(cptr, "text");
802 cptr->c_text = p->pq_text;
803 FINDCOMP(cptr, "error");
805 cptr->c_text = p->pq_error;
807 fmt_scan(c1->c_fmt, buffer, sizeof(buffer) - 1, dat);
810 c2->c_text = add(",\n", c2->c_text);
811 if (*(cp = buffer + strlen(buffer) - 1) == '\n')
813 c2->c_text = add(buffer, c2->c_text);
823 c2->c_text = add("\n", c2->c_text);
828 static struct mcomp *
829 add_queue(struct mcomp **head, struct mcomp **tail, char *name,
830 char *text, int flags)
834 if ((c1 = (struct mcomp *) calloc((size_t) 1, sizeof(*c1))) == NULL)
835 adios(NULL, "unable to allocate comp memory");
837 c1->c_flags = flags & ~INIT;
838 if ((c1->c_name = name ? getcpy(name) : NULL))
839 c1->c_flags |= mcomp_flags(c1->c_name);
840 c1->c_text = text ? getcpy(text) : NULL;
843 c1->c_ovtxt = getcpy(global.c_ovtxt);
844 c1->c_offset = global.c_offset;
845 c1->c_ovoff = global. c_ovoff;
847 c1->c_cwidth = global.c_cwidth;
848 c1->c_flags |= global.c_flags & GFLAGS;
853 (*tail)->c_next = c1;
861 free_queue(struct mcomp **head, struct mcomp **tail)
863 struct mcomp *c1, *c2;
865 for (c1 = *head; c1; c1 = c2) {
876 free((char *) c1->c_fmt);
880 *head = *tail = NULL;
885 putcomp(struct mcomp *c1, struct mcomp *c2, int flag)
892 wid = c1->c_width ? c1->c_width : global.c_width;
893 ovoff = (c1->c_ovoff >= 0 ? c1->c_ovoff : global.c_ovoff)
895 if ((ovtxt = c1->c_ovtxt ? c1->c_ovtxt : global.c_ovtxt) == NULL)
897 if (wid < ovoff + strlen(ovtxt) + 5)
898 adios(NULL, "component: %s width(%d) too small for overflow(%d)", c1->c_name, wid, ovoff + strlen(ovtxt) + 5);
901 if (c1->c_flags & CLEARTEXT) {
907 if (c1->c_fstr && (c1->c_flags & (ADDRFMT | DATEFMT | FORMAT)))
908 mcomp_format(c1, c2);
910 if (c1->c_flags & CENTER) {
911 count = (c1->c_width ? c1->c_width : global.c_width)
912 - c1->c_offset - strlen(c2->c_text);
913 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT))
914 count -= strlen(c1->c_text ? c1->c_text : c1->c_name)
916 lm = c1->c_offset + (count / 2);
922 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT)) {
923 if (c1->c_flags & UPPERCASE) /* uppercase component also */
924 for (cp = (c1->c_text ? c1->c_text : c1->c_name); *cp; cp++)
927 putstr(c1->c_text ? c1->c_text : c1->c_name);
928 if (flag != BODYCOMP) {
930 if (!(c1->c_flags & SPLIT))
931 c1->c_flags |= HDROUTPUT;
934 if ((count = c1->c_cwidth -
935 strlen(c1->c_text ? c1->c_text : c1->c_name) - 2) > 0)
939 c1->c_flags |= HDROUTPUT; /* for BODYCOMP */
942 if (flag == TWOCOMP && !(c2->c_flags & HDROUTPUT)
943 && !(c2->c_flags & NOCOMPONENT)) {
944 if (c1->c_flags & UPPERCASE)
945 for (cp = c2->c_name; *cp; cp++)
950 if (!(c1->c_flags & SPLIT))
951 c2->c_flags |= HDROUTPUT;
954 if ((count = c1->c_cwidth - strlen(c2->c_name) - 2) > 0)
958 if (c1->c_flags & UPPERCASE)
959 for (cp = c2->c_text; *cp; cp++)
966 count = (c1->c_cwidth >= 0) ? c1->c_cwidth :
967 (int)strlen(c2->c_name) + 2;
969 count = (c1->c_cwidth >= 0) ? (size_t)c1->c_cwidth :
971 c1->c_text : c1->c_name) + 2;
973 count += c1->c_offset;
975 if ((cp = oneline(c2->c_text, c1->c_flags)))
979 while ((cp = oneline(c2->c_text, c1->c_flags))) {
981 if (flag == BODYCOMP && !(c1->c_flags & NOCOMPONENT))
982 putstr(c1->c_text ? c1->c_text : c1->c_name);
988 if (flag == BODYCOMP && term == '\n')
989 c1->c_flags &= ~HDROUTPUT; /* Buffer ended on a newline */
994 oneline(char *stuff, long flags)
1002 return (onelp = NULL);
1006 if (flags & COMPRESS) {
1007 for (spc = 1, cp = ret; *onelp; onelp++)
1008 if (isspace(*onelp)) {
1009 if (*onelp == '\n' &&
1011 (flags & ADDRFMT))) {
1026 while (*onelp && *onelp != '\n')
1028 if (*onelp == '\n') {
1032 if (flags & LEFTADJUST)
1033 while (*ret == ' ' || *ret == '\t')
1036 if (*onelp == 0 && term == '\n' && (flags & NONEWLINE))
1044 putstr(char *string)
1046 if (!column && lm > 0) {
1082 ** If we are forwarding this message, and the first
1083 ** column contains a dash, then add a dash and a space.
1085 if (column == 0 && forwflg && ch == '-') {
1094 if (column >= wid) {
1098 putstr(ovtxt ? ovtxt : "");