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 mhlswitches[] = {
45 { "form formfile", 0 },
47 { "width columns", 0 },
49 { "sleep seconds", 0 },
63 #define NOCOMPONENT 0x000001 /* don't show component name */
64 #define UPPERCASE 0x000002 /* display in all upper case */
65 #define CENTER 0x000004 /* center line */
66 #define CLEARTEXT 0x000008 /* cleartext */
67 #define EXTRA 0x000010 /* an "extra" component */
68 #define HDROUTPUT 0x000020 /* already output */
69 #define LEFTADJUST 0x000040 /* left justify multiple lines */
70 #define COMPRESS 0x000080 /* compress text */
71 #define ADDRFMT 0x000100 /* contains addresses */
72 #define DATEFMT 0x000200 /* contains dates */
73 #define FORMAT 0x000400 /* parse address/date/RFC-2047 field */
74 #define INIT 0x000800 /* initialize component */
75 #define SPLIT 0x001000 /* split headers (don't concatenate) */
76 #define NONEWLINE 0x002000 /* don't write trailing newline */
77 #define LBITS "\020\01NOCOMPONENT\02UPPERCASE\03CENTER\04CLEARTEXT\05EXTRA\06HDROUTPUT\07LEFTADJUST\010COMPRESS\011ADDRFMT\012DATEFMT\013FORMAT\014INIT\015SPLIT\016NONEWLINE"
78 #define GFLAGS (NOCOMPONENT | UPPERCASE | CENTER | LEFTADJUST | COMPRESS | SPLIT)
81 char *c_name; /* component name */
82 char *c_text; /* component text */
83 char *c_ovtxt; /* text overflow indicator */
84 char *c_fstr; /* iff FORMAT */
85 struct format *c_fmt; /* .. */
86 int c_offset; /* left margin indentation */
87 int c_ovoff; /* overflow indentation */
88 int c_width; /* width of field */
89 int c_cwidth; /* width of component */
94 static struct mcomp *msghd = NULL;
95 static struct mcomp *msgtl = NULL;
96 static struct mcomp *fmthd = NULL;
97 static struct mcomp *fmttl = NULL;
99 static struct mcomp global = {
100 NULL, NULL, NULL, NULL, NULL, 0, -1, 80, -1, 0, NULL
103 static struct mcomp holder = {
104 NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0, NOCOMPONENT, NULL
112 static struct pair pairs[] = {
115 { "Sender", ADDRFMT },
116 { "Reply-To", ADDRFMT },
120 { "Resent-Date", DATEFMT },
121 { "Resent-From", ADDRFMT },
122 { "Resent-Sender", ADDRFMT },
123 { "Resent-Reply-To", ADDRFMT },
124 { "Resent-To", ADDRFMT },
125 { "Resent-Cc", ADDRFMT },
126 { "Resent-Bcc", ADDRFMT },
136 static struct triple triples[] = {
137 { "nocomponent", NOCOMPONENT, 0 },
138 { "uppercase", UPPERCASE, 0 },
139 { "nouppercase", 0, UPPERCASE },
140 { "center", CENTER, 0 },
141 { "nocenter", 0, CENTER },
142 { "leftadjust", LEFTADJUST, 0 },
143 { "noleftadjust", 0, LEFTADJUST },
144 { "compress", COMPRESS, 0 },
145 { "nocompress", 0, COMPRESS },
146 { "split", SPLIT, 0 },
147 { "nosplit", 0, SPLIT },
148 { "addrfield", ADDRFMT, DATEFMT },
149 { "datefield", DATEFMT, ADDRFMT },
150 { "newline", 0, NONEWLINE },
151 { "nonewline", NONEWLINE, 0 },
156 static int dobody = 1;
157 static int forwflg = 0;
158 static int forwall = 0;
160 static int sleepsw = NOTOK;
162 static int exitstat = 0;
163 static int mhldebug = 0;
165 static unsigned int column;
170 static unsigned int wid;
174 static unsigned char *onelp;
178 static int num_ignores = 0;
179 static char *ignores[MAXARGS];
182 static jmp_buf mhlenv;
184 static FILE *(*mhl_action) () = (FILE *(*) ()) 0;
188 ** Redefine a couple of functions.
189 ** These are undefined later in the code.
191 #define adios mhladios
197 static void mhl_format(char *, int);
198 static int evalvar(struct mcomp *);
199 static int ptoi(char *, int *);
200 static int ptos(char *, char **);
201 static char *parse(void);
202 static void process(char *, int, int);
203 static void mhlfile(FILE *, char *, int, int);
204 static int mcomp_flags(char *);
205 static char *mcomp_add(long, char *, char *);
206 static void mcomp_format(struct mcomp *, struct mcomp *);
207 static struct mcomp *add_queue(struct mcomp **, struct mcomp **,
208 char *, char *, int);
209 static void free_queue(struct mcomp **, struct mcomp **);
210 static void putcomp(struct mcomp *, struct mcomp *, int);
211 static char *oneline(char *, long);
212 static void putstr(char *);
213 static void putch(char);
214 static void intrser(int);
215 static void mhladios(char *, char *, ...);
216 static void mhldone(int);
218 int sc_width(void); /* from termsbr.c */
222 main(int argc, char **argv)
224 int i, width = 0, vecp = 0;
225 char *cp, *form = NULL;
226 char buf[BUFSIZ], *files[MAXARGS];
227 char **argp, **arguments;
230 setlocale(LC_ALL, "");
233 invo_name = mhbasename(argv[0]);
235 /* read user profile/context */
238 arguments = getarguments(invo_name, argc, argv, 1);
241 if ((cp = getenv("MHLDEBUG")) && *cp)
244 while ((cp = *argp++)) {
246 switch (smatch(++cp, mhlswitches)) {
248 ambigsw(cp, mhlswitches);
251 adios(NULL, "-%s unknown\n", cp);
254 snprintf(buf, sizeof(buf), "%s [switches] [files ...]", invo_name);
255 print_help(buf, mhlswitches, 1);
258 print_version(invo_name);
262 if (!(form = *argp++) || *form == '-')
263 adios(NULL, "missing argument to %s",
268 if (!(cp = *argp++) || *cp == '-')
269 adios(NULL, "missing argument to %s",
271 sleepsw = atoi(cp); /* ZERO ok! */
275 if (!(cp = *argp++) || *cp == '-')
276 adios(NULL, "missing argument to %s",
278 if ((width = atoi(cp)) < 1)
279 adios(NULL, "bad argument %s %s",
284 forwall++; /* fall */
297 mhl_format(form ? form : mhlformat, width);
300 process(NULL, 1, vecp = 1);
302 for (i = 0; i < vecp; i++)
303 process(files[i], i + 1, vecp);
307 printf("\n------- End of Forwarded Message%s\n\n",
308 vecp > 1 ? "s" : "");
312 if (ferror(stdout)) {
313 adios("output", "error writing");
321 mhl_format(char *file, int width)
325 char *ap, buffer[BUFSIZ], name[NAMESZ];
329 static dev_t dev = 0;
330 static ino_t ino = 0;
331 static time_t mtime = 0;
334 if (stat(etcpath(file), &st) != NOTOK
335 && mtime == st.st_mtime
340 free_queue(&fmthd, &fmttl);
343 if ((fp = fopen(etcpath(file), "r")) == NULL)
344 adios(file, "unable to open format file");
346 if (fstat(fileno(fp), &st) != NOTOK) {
352 global.c_ovtxt = global.c_fstr = NULL;
356 if ((i = sc_width()) > 5)
358 global.c_cwidth = -1;
362 while (vfgets(fp, &ap) == OK) {
367 if ((cp = strchr(bp, '\n')))
371 c1 = add_queue(&fmthd, &fmttl, NULL, bp + 1,
377 strncpy(name, parse(), sizeof(name));
383 ** Split this list of fields to ignore, and copy
384 ** it to the end of the current "ignores" list.
386 if (!mh_strcasecmp(name, "ignores")) {
390 /* split the fields */
391 tmparray = brkstring(getcpy(++parptr), ",",
394 ** copy pointers to split fields
397 while (tmparray[n] && num_ignores<MAXARGS-1) {
398 ignores[num_ignores++] = tmparray[n++];
400 ignores[num_ignores] = NULL;
405 if (evalvar(&global))
406 adios(NULL, "format file syntax error: %s", bp);
413 c1 = add_queue(&fmthd, &fmttl, name, NULL, INIT);
414 while (*parptr == ':' || *parptr == ',') {
417 adios(NULL, "format file syntax error: %s", bp);
419 if (!c1->c_fstr && global.c_fstr) {
420 if ((c1->c_flags & DATEFMT) &&
421 (global.c_flags & DATEFMT)) {
422 c1->c_fstr = getcpy(global.c_fstr);
423 } else if ((c1->c_flags & ADDRFMT) &&
424 (global.c_flags & ADDRFMT)) {
425 c1->c_fstr = getcpy(global.c_fstr);
431 adios(NULL, "format file syntax error: %s", bp);
437 for (c1 = fmthd; c1; c1 = c1->c_next) {
438 fprintf(stderr, "c1: name=\"%s\" text=\"%s\" ovtxt=\"%s\"\n", c1->c_name, c1->c_text, c1->c_ovtxt);
439 fprintf(stderr, "\tfstr=0x%x fmt=0x%x\n", (unsigned int)(unsigned long) c1->c_fstr, (unsigned int)(unsigned long) c1->c_fmt);
440 fprintf(stderr, "\toffset=%d ovoff=%d width=%d cwidth=%d\n", c1->c_offset, c1->c_ovoff, c1->c_width, c1->c_cwidth);
441 fprintf (stderr, "\tflags=%s\n", snprintb(buffer, sizeof(buffer), (unsigned) c1->c_flags, LBITS));
447 global.c_width = width;
448 if (global.c_width < 5)
449 global.c_width = 10000;
454 evalvar(struct mcomp *c1)
456 char *cp, name[NAMESZ];
461 strncpy(name, parse(), sizeof(name));
463 if (!mh_strcasecmp(name, "component")) {
464 if (ptos(name, &c1->c_text))
466 c1->c_flags &= ~NOCOMPONENT;
470 if (!mh_strcasecmp(name, "overflowtext"))
471 return ptos(name, &c1->c_ovtxt);
473 if (!mh_strcasecmp(name, "formatfield")) {
478 cp = concat("=", cp, NULL);
479 fmtstr = new_fs(cp, NULL);
481 c1->c_fstr = getcpy(fmtstr);
482 c1->c_flags |= FORMAT;
486 if (!mh_strcasecmp(name, "decode")) {
489 fmtstr = new_fs("=%(decode{text})", NULL);
490 c1->c_fstr = getcpy(fmtstr);
491 c1->c_flags |= FORMAT;
495 if (!mh_strcasecmp(name, "offset"))
496 return ptoi(name, &c1->c_offset);
497 if (!mh_strcasecmp(name, "overflowoffset"))
498 return ptoi(name, &c1->c_ovoff);
499 if (!mh_strcasecmp(name, "width"))
500 return ptoi(name, &c1->c_width);
501 if (!mh_strcasecmp(name, "compwidth"))
502 return ptoi(name, &c1->c_cwidth);
504 for (ap = triples; ap->t_name; ap++)
505 if (!mh_strcasecmp(ap->t_name, name)) {
506 c1->c_flags |= ap->t_on;
507 c1->c_flags &= ~ap->t_off;
516 ptoi(char *name, int *i)
520 if (*parptr++ != '=' || !*(cp = parse())) {
521 advise(NULL, "missing argument to variable %s", name);
531 ptos(char *name, char **s)
535 if (*parptr++ != '=') {
536 advise(NULL, "missing argument to variable %s", name);
540 if (*parptr != '"') {
541 for (cp = parptr; *parptr && *parptr != ':' && *parptr != ',';
545 for (cp = ++parptr; *parptr && *parptr != '"'; parptr++)
546 if (*parptr == QUOTE)
553 if ((*parptr = c) == '"')
564 static char result[NAMESZ];
566 for (cp = result; *parptr && (cp - result < NAMESZ); parptr++) {
585 process(char *fname, int ofilen, int ofilec)
590 switch (setjmp(env)) {
593 fp = mhl_action ? (*mhl_action) (fname) :
596 advise(fname, "unable to open");
604 SIGNAL(SIGINT, intrser);
605 mhlfile(fp, fname, ofilen, ofilec);
608 SIGNAL(SIGINT, SIG_IGN);
609 if (mhl_action == NULL && fp != stdin)
613 holder.c_text = NULL;
615 free_queue(&msghd, &msgtl);
616 for (c1 = fmthd; c1; c1 = c1->c_next)
617 c1->c_flags &= ~HDROUTPUT;
624 mhlfile(FILE *fp, char *mname, int ofilen, int ofilec)
627 struct mcomp *c1, *c2, *c3;
628 char **ip, name[NAMESZ], buf[BUFSIZ];
633 printf(" Forwarded Message%s", ofilec > 1 ? "s" : "");
635 printf(" Message %d", ofilen);
637 } else if (ofilec > 1) {
641 printf(">>> %s\n\n", mname);
644 for (state = FLD;;) {
645 switch (state = m_getfld(state, name, buf, sizeof(buf), fp)) {
648 for (ip = ignores; *ip; ip++)
649 if (!mh_strcasecmp(name, *ip)) {
650 while (state == FLDPLUS)
651 state = m_getfld(state, name, buf, sizeof(buf), fp);
657 for (c2 = fmthd; c2; c2 = c2->c_next)
658 if (!mh_strcasecmp(c2->c_name, name))
661 if (!((c3 = c2 ? c2 : &global)->c_flags & SPLIT))
662 for (c1 = msghd; c1; c1 = c1->c_next)
663 if (!mh_strcasecmp(c1->c_name,
665 c1->c_text = mcomp_add(c1->c_flags, buf, c1->c_text);
669 c1 = add_queue(&msghd, &msgtl, name, buf, 0);
670 while (state == FLDPLUS) {
671 state = m_getfld(state, name, buf,
673 c1->c_text = add(buf, c1->c_text);
676 c1->c_flags |= EXTRA;
682 for (c1 = fmthd; c1; c1 = c1->c_next) {
683 if (c1->c_flags & CLEARTEXT) {
684 putcomp(c1, c1, ONECOMP);
687 if (!mh_strcasecmp(c1->c_name, "messagename")) {
688 holder.c_text = concat("(Message ",
690 putcomp(c1, &holder, ONECOMP);
692 holder.c_text = NULL;
695 if (!mh_strcasecmp(c1->c_name, "extras")) {
696 for (c2 = msghd; c2; c2 = c2->c_next)
697 if (c2->c_flags & EXTRA)
698 putcomp(c1, c2, TWOCOMP);
701 if (dobody && !mh_strcasecmp(c1->c_name, "body")) {
702 holder.c_text = mh_xmalloc(sizeof(buf));
703 strncpy(holder.c_text, buf, sizeof(buf));
704 while (state == BODY) {
705 putcomp(c1, &holder, BODYCOMP);
706 state = m_getfld(state, name, holder.c_text, sizeof(buf), fp);
709 holder.c_text = NULL;
712 for (c2 = msghd; c2; c2 = c2->c_next)
713 if (!mh_strcasecmp(c2->c_name,
715 putcomp(c1, c2, ONECOMP);
716 if (!(c1->c_flags & SPLIT))
724 advise(NULL, "format error in message %s", mname);
729 adios(NULL, "getfld() returned %d", state);
736 mcomp_flags(char *name)
740 for (ap = pairs; ap->p_name; ap++)
741 if (!mh_strcasecmp(ap->p_name, name))
742 return (ap->p_flags);
749 mcomp_add(long flags, char *s1, char *s2)
753 if (!(flags & ADDRFMT))
756 if (s2 && *(dp = s2 + strlen(s2) - 1) == '\n')
759 return add(s1, add(",\n", s2));
766 struct pqpair *pq_next;
771 mcomp_format(struct mcomp *c1, struct mcomp *c2)
775 char buffer[BUFSIZ], error[BUFSIZ];
777 struct pqpair *p, *q;
786 dat[3] = sizeof(buffer) - 1;
788 fmt_compile(c1->c_fstr, &c1->c_fmt);
790 if (!(c1->c_flags & ADDRFMT)) {
791 FINDCOMP(cptr, "text");
794 if ((cp = strrchr(ap, '\n'))) /* drop ending newline */
798 fmt_scan(c1->c_fmt, buffer, sizeof(buffer) - 1, dat);
799 /* Don't need to append a newline, dctime() already did */
800 c2->c_text = getcpy(buffer);
806 (q = &pq)->pq_next = NULL;
807 while ((cp = getname(ap))) {
808 if ((p = (struct pqpair *)
809 calloc((size_t) 1, sizeof(*p))) == NULL)
810 adios(NULL, "unable to allocate pqpair memory");
812 if ((mp = getm(cp, NULL, 0, AD_NAME, error)) == NULL) {
813 p->pq_text = getcpy(cp);
814 p->pq_error = getcpy(error);
816 p->pq_text = getcpy(mp->m_text);
819 q = (q->pq_next = p);
822 for (p = pq.pq_next; p; p = q) {
823 FINDCOMP(cptr, "text");
825 cptr->c_text = p->pq_text;
826 FINDCOMP(cptr, "error");
828 cptr->c_text = p->pq_error;
830 fmt_scan(c1->c_fmt, buffer, sizeof(buffer) - 1, dat);
833 c2->c_text = add(",\n", c2->c_text);
834 if (*(cp = buffer + strlen(buffer) - 1) == '\n')
836 c2->c_text = add(buffer, c2->c_text);
846 c2->c_text = add("\n", c2->c_text);
851 static struct mcomp *
852 add_queue(struct mcomp **head, struct mcomp **tail, char *name,
853 char *text, int flags)
857 if ((c1 = (struct mcomp *) calloc((size_t) 1, sizeof(*c1))) == NULL)
858 adios(NULL, "unable to allocate comp memory");
860 c1->c_flags = flags & ~INIT;
861 if ((c1->c_name = name ? getcpy(name) : NULL))
862 c1->c_flags |= mcomp_flags(c1->c_name);
863 c1->c_text = text ? getcpy(text) : NULL;
866 c1->c_ovtxt = getcpy(global.c_ovtxt);
867 c1->c_offset = global.c_offset;
868 c1->c_ovoff = global. c_ovoff;
870 c1->c_cwidth = global.c_cwidth;
871 c1->c_flags |= global.c_flags & GFLAGS;
876 (*tail)->c_next = c1;
884 free_queue(struct mcomp **head, struct mcomp **tail)
886 struct mcomp *c1, *c2;
888 for (c1 = *head; c1; c1 = c2) {
899 free((char *) c1->c_fmt);
903 *head = *tail = NULL;
908 putcomp(struct mcomp *c1, struct mcomp *c2, int flag)
915 wid = c1->c_width ? c1->c_width : global.c_width;
916 ovoff = (c1->c_ovoff >= 0 ? c1->c_ovoff : global.c_ovoff)
918 if ((ovtxt = c1->c_ovtxt ? c1->c_ovtxt : global.c_ovtxt) == NULL)
920 if (wid < ovoff + strlen(ovtxt) + 5)
921 adios(NULL, "component: %s width(%d) too small for overflow(%d)", c1->c_name, wid, ovoff + strlen(ovtxt) + 5);
924 if (c1->c_flags & CLEARTEXT) {
930 if (c1->c_fstr && (c1->c_flags & (ADDRFMT | DATEFMT | FORMAT)))
931 mcomp_format(c1, c2);
933 if (c1->c_flags & CENTER) {
934 count = (c1->c_width ? c1->c_width : global.c_width)
935 - c1->c_offset - strlen(c2->c_text);
936 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT))
937 count -= strlen(c1->c_text ? c1->c_text : c1->c_name)
939 lm = c1->c_offset + (count / 2);
945 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT)) {
946 if (c1->c_flags & UPPERCASE) /* uppercase component also */
947 for (cp = (c1->c_text ? c1->c_text : c1->c_name); *cp; cp++)
950 putstr(c1->c_text ? c1->c_text : c1->c_name);
951 if (flag != BODYCOMP) {
953 if (!(c1->c_flags & SPLIT))
954 c1->c_flags |= HDROUTPUT;
957 if ((count = c1->c_cwidth -
958 strlen(c1->c_text ? c1->c_text : c1->c_name) - 2) > 0)
962 c1->c_flags |= HDROUTPUT; /* for BODYCOMP */
965 if (flag == TWOCOMP && !(c2->c_flags & HDROUTPUT)
966 && !(c2->c_flags & NOCOMPONENT)) {
967 if (c1->c_flags & UPPERCASE)
968 for (cp = c2->c_name; *cp; cp++)
973 if (!(c1->c_flags & SPLIT))
974 c2->c_flags |= HDROUTPUT;
977 if ((count = c1->c_cwidth - strlen(c2->c_name) - 2) > 0)
981 if (c1->c_flags & UPPERCASE)
982 for (cp = c2->c_text; *cp; cp++)
989 count = (c1->c_cwidth >= 0) ? c1->c_cwidth :
990 (int)strlen(c2->c_name) + 2;
992 count = (c1->c_cwidth >= 0) ? (size_t)c1->c_cwidth :
994 c1->c_text : c1->c_name) + 2;
996 count += c1->c_offset;
998 if ((cp = oneline(c2->c_text, c1->c_flags)))
1002 while ((cp = oneline(c2->c_text, c1->c_flags))) {
1004 if (flag == BODYCOMP && !(c1->c_flags & NOCOMPONENT))
1005 putstr(c1->c_text ? c1->c_text : c1->c_name);
1011 if (flag == BODYCOMP && term == '\n')
1012 c1->c_flags &= ~HDROUTPUT; /* Buffer ended on a newline */
1017 oneline(char *stuff, long flags)
1025 return (onelp = NULL);
1029 if (flags & COMPRESS) {
1030 for (spc = 1, cp = ret; *onelp; onelp++)
1031 if (isspace(*onelp)) {
1032 if (*onelp == '\n' &&
1034 (flags & ADDRFMT))) {
1049 while (*onelp && *onelp != '\n')
1051 if (*onelp == '\n') {
1055 if (flags & LEFTADJUST)
1056 while (*ret == ' ' || *ret == '\t')
1059 if (*onelp == 0 && term == '\n' && (flags & NONEWLINE))
1067 putstr(char *string)
1069 if (!column && lm > 0) {
1105 ** If we are forwarding this message, and the first
1106 ** column contains a dash, then add a dash and a space.
1108 if (column == 0 && forwflg && ch == '-') {
1117 if (column >= wid) {
1121 putstr(ovtxt ? ovtxt : "");
1143 mhladios(char *what, char *fmt, ...)
1148 advertise(what, NULL, fmt, ap);
1159 longjmp(mhlenv, DONE);