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>
23 ** for a component containing addresses, ADDRFMT, if COMPRESS is also
24 ** set, then addresses get split wrong (not at the spaces between commas).
25 ** To fix this correctly, putstr() should know about "atomic" strings that
26 ** must NOT be broken across lines. That's too difficult for right now
27 ** (it turns out that there are a number of degernate cases), so in
28 ** oneline(), instead of
30 ** (*onelp == '\n' && !onelp[1])
32 ** being a terminating condition,
34 ** (*onelp == '\n' && (!onelp[1] || (flags & ADDRFMT)))
36 ** is used instead. This cuts the line prematurely, and gives us a much
37 ** better chance of getting things right.
46 static struct swit switches[] = {
48 { "form formfile", 0 },
50 { "width columns", 0 },
64 #define NOCOMPONENT 0x000001 /* don't show component name */
65 #define UPPERCASE 0x000002 /* display in all upper case */
66 #define CENTER 0x000004 /* center line */
67 #define CLEARTEXT 0x000008 /* cleartext */
68 #define EXTRA 0x000010 /* an "extra" component */
69 #define HDROUTPUT 0x000020 /* already output */
70 #define LEFTADJUST 0x000040 /* left justify multiple lines */
71 #define COMPRESS 0x000080 /* compress text */
72 #define ADDRFMT 0x000100 /* contains addresses */
73 #define DATEFMT 0x000200 /* contains dates */
74 #define FORMAT 0x000400 /* parse address/date/RFC-2047 field */
75 #define INIT 0x000800 /* initialize component */
76 #define SPLIT 0x001000 /* split headers (don't concatenate) */
77 #define NONEWLINE 0x002000 /* don't write trailing newline */
78 #define LBITS "\020\01NOCOMPONENT\02UPPERCASE\03CENTER\04CLEARTEXT\05EXTRA\06HDROUTPUT\07LEFTADJUST\010COMPRESS\011ADDRFMT\012DATEFMT\013FORMAT\014INIT\015SPLIT\016NONEWLINE"
79 #define GFLAGS (NOCOMPONENT | UPPERCASE | CENTER | LEFTADJUST | COMPRESS | SPLIT)
82 char *c_name; /* component name */
83 char *c_text; /* component text */
84 char *c_ovtxt; /* text overflow indicator */
85 char *c_fstr; /* iff FORMAT */
86 struct format *c_fmt; /* .. */
87 int c_offset; /* left margin indentation */
88 int c_ovoff; /* overflow indentation */
89 int c_width; /* width of field */
90 int c_cwidth; /* width of component */
95 static struct mcomp *msghd = NULL;
96 static struct mcomp *msgtl = NULL;
97 static struct mcomp *fmthd = NULL;
98 static struct mcomp *fmttl = NULL;
100 static struct mcomp global = {
101 NULL, NULL, NULL, NULL, NULL, 0, -1, 80, -1, 0, NULL
104 static struct mcomp holder = {
105 NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0, NOCOMPONENT, NULL
113 static struct pair pairs[] = {
116 { "Sender", ADDRFMT },
117 { "Reply-To", ADDRFMT },
121 { "Resent-Date", DATEFMT },
122 { "Resent-From", ADDRFMT },
123 { "Resent-Sender", ADDRFMT },
124 { "Resent-Reply-To", ADDRFMT },
125 { "Resent-To", ADDRFMT },
126 { "Resent-Cc", ADDRFMT },
127 { "Resent-Bcc", ADDRFMT },
137 static struct triple triples[] = {
138 { "nocomponent", NOCOMPONENT, 0 },
139 { "uppercase", UPPERCASE, 0 },
140 { "nouppercase", 0, UPPERCASE },
141 { "center", CENTER, 0 },
142 { "nocenter", 0, CENTER },
143 { "leftadjust", LEFTADJUST, 0 },
144 { "noleftadjust", 0, LEFTADJUST },
145 { "compress", COMPRESS, 0 },
146 { "nocompress", 0, COMPRESS },
147 { "split", SPLIT, 0 },
148 { "nosplit", 0, SPLIT },
149 { "addrfield", ADDRFMT, DATEFMT },
150 { "datefield", DATEFMT, ADDRFMT },
151 { "newline", 0, NONEWLINE },
152 { "nonewline", NONEWLINE, 0 },
157 static int dobody = 1;
158 static int forwflg = 0;
159 static int forwall = 0;
161 static int exitstat = 0;
162 static int mhldebug = 0;
164 static unsigned int column;
169 static unsigned int wid;
173 static unsigned char *onelp;
177 static int num_ignores = 0;
178 static char *ignores[MAXARGS];
180 volatile sig_atomic_t eflag = 0;
183 ** Redefine a couple of functions.
184 ** These are undefined later in the code.
190 static void mhl_format(char *, int);
191 static int evalvar(struct mcomp *);
192 static int ptoi(char *, int *);
193 static int ptos(char *, char **);
194 static char *parse(void);
195 static void process(char *, int, int);
196 static void mhlfile(FILE *, char *, int, int);
197 static int mcomp_flags(char *);
198 static char *mcomp_add(long, char *, char *);
199 static void mcomp_format(struct mcomp *, struct mcomp *);
200 static struct mcomp *add_queue(struct mcomp **, struct mcomp **,
201 char *, char *, int);
202 static void free_queue(struct mcomp **, struct mcomp **);
203 static void putcomp(struct mcomp *, struct mcomp *, int);
204 static char *oneline(char *, long);
205 static void putstr(char *);
206 static void putch(char);
207 static void intrser(int);
209 int sc_width(void); /* from termsbr.c */
213 main(int argc, char **argv)
215 int i, width = 0, vecp = 0;
216 char *cp, *form = NULL;
217 char buf[BUFSIZ], *files[MAXARGS];
218 char **argp, **arguments;
220 setlocale(LC_ALL, "");
221 invo_name = mhbasename(argv[0]);
223 /* read user profile/context */
226 arguments = getarguments(invo_name, argc, argv, 1);
229 if ((cp = getenv("MHLDEBUG")) && *cp)
232 while ((cp = *argp++)) {
234 switch (smatch(++cp, switches)) {
236 ambigsw(cp, switches);
239 adios(EX_USAGE, NULL, "-%s unknown\n", cp);
242 snprintf(buf, sizeof(buf), "%s [switches] [files ...]", invo_name);
243 print_help(buf, switches, 1);
244 exit(argc == 2 ? EX_OK : EX_USAGE);
246 print_version(invo_name);
247 exit(argc == 2 ? EX_OK : EX_USAGE);
250 if (!(form = *argp++) || *form == '-')
251 adios(EX_USAGE, NULL, "missing argument to %s",
256 if (!(cp = *argp++) || *cp == '-')
257 adios(EX_USAGE, NULL, "missing argument to %s",
259 if ((width = atoi(cp)) < 1)
260 adios(EX_USAGE, NULL, "bad argument %s %s",
265 forwall++; /* fall */
278 mhl_format(form ? form : mhlformat, width);
281 process(NULL, 1, vecp = 1);
283 for (i = 0; i < vecp; i++)
284 process(files[i], i + 1, vecp);
288 printf("\n------- End of Forwarded Message%s\n\n",
289 vecp > 1 ? "s" : "");
293 if (ferror(stdout)) {
294 adios(EX_IOERR, "output", "error writing");
302 mhl_format(char *file, int width)
306 char *ap, buffer[BUFSIZ], name[NAMESZ];
310 static dev_t dev = 0;
311 static ino_t ino = 0;
312 static time_t mtime = 0;
315 if (stat(etcpath(file), &st) != NOTOK
316 && mtime == st.st_mtime
321 free_queue(&fmthd, &fmttl);
324 if ((fp = fopen(etcpath(file), "r")) == NULL)
325 adios(EX_IOERR, file, "unable to open format file");
327 if (fstat(fileno(fp), &st) != NOTOK) {
333 global.c_ovtxt = global.c_fstr = NULL;
337 if ((i = sc_width()) > 5)
339 global.c_cwidth = -1;
343 while (vfgets(fp, &ap) == OK) {
348 if ((cp = strchr(bp, '\n')))
352 c1 = add_queue(&fmthd, &fmttl, NULL, bp + 1,
358 strncpy(name, parse(), sizeof(name));
364 ** Split this list of fields to ignore, and copy
365 ** it to the end of the current "ignores" list.
367 if (!mh_strcasecmp(name, "ignores")) {
371 /* split the fields */
372 tmparray = brkstring(getcpy(++parptr), ",",
375 ** copy pointers to split fields
378 while (tmparray[n] && num_ignores<MAXARGS-1) {
379 ignores[num_ignores++] = tmparray[n++];
381 ignores[num_ignores] = NULL;
386 if (evalvar(&global))
387 adios(EX_CONFIG, NULL, "format file syntax error: %s", bp);
394 c1 = add_queue(&fmthd, &fmttl, name, NULL, INIT);
395 while (*parptr == ':' || *parptr == ',') {
398 adios(EX_CONFIG, NULL, "format file syntax error: %s", bp);
400 if (!c1->c_fstr && global.c_fstr) {
401 if ((c1->c_flags & DATEFMT) &&
402 (global.c_flags & DATEFMT)) {
403 c1->c_fstr = getcpy(global.c_fstr);
404 } else if ((c1->c_flags & ADDRFMT) &&
405 (global.c_flags & ADDRFMT)) {
406 c1->c_fstr = getcpy(global.c_fstr);
412 adios(EX_CONFIG, NULL, "format file syntax error: %s", bp);
418 for (c1 = fmthd; c1; c1 = c1->c_next) {
419 fprintf(stderr, "c1: name=\"%s\" text=\"%s\" ovtxt=\"%s\"\n", c1->c_name, c1->c_text, c1->c_ovtxt);
420 fprintf(stderr, "\tfstr=0x%x fmt=0x%x\n", (unsigned int)(unsigned long) c1->c_fstr, (unsigned int)(unsigned long) c1->c_fmt);
421 fprintf(stderr, "\toffset=%d ovoff=%d width=%d cwidth=%d\n", c1->c_offset, c1->c_ovoff, c1->c_width, c1->c_cwidth);
422 fprintf (stderr, "\tflags=%s\n", snprintb(buffer, sizeof(buffer), (unsigned) c1->c_flags, LBITS));
428 global.c_width = width;
429 if (global.c_width < 5)
430 global.c_width = 10000;
435 evalvar(struct mcomp *c1)
437 char *cp, name[NAMESZ];
442 strncpy(name, parse(), sizeof(name));
444 if (!mh_strcasecmp(name, "component")) {
445 if (ptos(name, &c1->c_text))
447 c1->c_flags &= ~NOCOMPONENT;
451 if (!mh_strcasecmp(name, "overflowtext"))
452 return ptos(name, &c1->c_ovtxt);
454 if (!mh_strcasecmp(name, "formatfield")) {
459 cp = concat("=", cp, NULL);
460 fmtstr = new_fs(cp, NULL);
462 c1->c_fstr = getcpy(fmtstr);
463 c1->c_flags |= FORMAT;
467 if (!mh_strcasecmp(name, "decode")) {
470 fmtstr = new_fs("=%(decode{text})", NULL);
471 c1->c_fstr = getcpy(fmtstr);
472 c1->c_flags |= FORMAT;
476 if (!mh_strcasecmp(name, "offset"))
477 return ptoi(name, &c1->c_offset);
478 if (!mh_strcasecmp(name, "overflowoffset"))
479 return ptoi(name, &c1->c_ovoff);
480 if (!mh_strcasecmp(name, "width"))
481 return ptoi(name, &c1->c_width);
482 if (!mh_strcasecmp(name, "compwidth"))
483 return ptoi(name, &c1->c_cwidth);
485 for (ap = triples; ap->t_name; ap++)
486 if (!mh_strcasecmp(ap->t_name, name)) {
487 c1->c_flags |= ap->t_on;
488 c1->c_flags &= ~ap->t_off;
497 ptoi(char *name, int *i)
501 if (*parptr++ != '=' || !*(cp = parse())) {
502 advise(NULL, "missing argument to variable %s", name);
512 ptos(char *name, char **s)
516 if (*parptr++ != '=') {
517 advise(NULL, "missing argument to variable %s", name);
521 if (*parptr != '"') {
522 for (cp = parptr; *parptr && *parptr != ':' && *parptr != ',';
526 for (cp = ++parptr; *parptr && *parptr != '"'; parptr++)
527 if (*parptr == QUOTE)
534 if ((*parptr = c) == '"')
545 static char result[NAMESZ];
547 for (cp = result; *parptr && (cp - result < NAMESZ); parptr++) {
566 process(char *fname, int ofilen, int ofilec)
572 fp = fopen(fname, "r");
574 advise(fname, "unable to open");
582 SIGNAL(SIGINT, intrser);
583 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;
599 mhlfile(FILE *fp, char *mname, int ofilen, int ofilec)
602 struct field f = free_field;
603 struct mcomp *c1, *c2, *c3;
609 printf(" Forwarded Message%s", ofilec > 1 ? "s" : "");
611 printf(" Message %d", ofilen);
614 } else if (ofilec > 1) {
618 printf(">>> %s\n\n", mname);
621 for (state = FLD2; !eflag; ) {
622 switch (state = m_getfld2(state, &f, fp)) {
624 for (ip = ignores; *ip; ip++)
625 if (mh_strcasecmp(f.name, *ip)==0) {
632 for (c2 = fmthd; c2; c2 = c2->c_next)
633 if (mh_strcasecmp(c2->c_name, f.name)==0) {
637 if (!((c3 = c2 ? c2 : &global)->c_flags & SPLIT))
638 for (c1 = msghd; c1; c1 = c1->c_next)
639 if (mh_strcasecmp(c1->c_name,
641 c1->c_text = mcomp_add(c1->c_flags, f.value, c1->c_text);
645 c1 = add_queue(&msghd, &msgtl, f.name, f.value, 0);
648 c1->c_flags |= EXTRA;
655 for (c1 = fmthd; c1; c1 = c1->c_next) {
656 if (c1->c_flags & CLEARTEXT) {
657 putcomp(c1, c1, ONECOMP);
660 if (mh_strcasecmp(c1->c_name, "messagename")==0) {
661 holder.c_text = concat("(Message ",
663 putcomp(c1, &holder, ONECOMP);
665 holder.c_text = NULL;
668 if (mh_strcasecmp(c1->c_name, "extras")==0) {
669 for (c2 = msghd; c2; c2 = c2->c_next) {
670 if (c2->c_flags & EXTRA) {
671 putcomp(c1, c2, TWOCOMP);
676 if (dobody && mh_strcasecmp(c1->c_name, "body")==0) {
677 holder.c_text = getcpy(f.value);
678 while (state == BODY2) {
679 putcomp(c1, &holder, BODYCOMP);
680 state = m_getfld2(state, &f, fp);
682 holder.c_text = getcpy(f.value);
685 holder.c_text = NULL;
688 for (c2 = msghd; c2; c2 = c2->c_next) {
689 if (mh_strcasecmp(c2->c_name,
691 putcomp(c1, c2, ONECOMP);
692 if (!(c1->c_flags & SPLIT)) {
703 advise(NULL, "format error in message %s", mname);
708 adios(EX_SOFTWARE, NULL, "getfld() returned %d", state);
715 mcomp_flags(char *name)
719 for (ap = pairs; ap->p_name; ap++)
720 if (!mh_strcasecmp(ap->p_name, name))
721 return (ap->p_flags);
728 mcomp_add(long flags, char *s1, char *s2)
732 if (!(flags & ADDRFMT))
735 if (s2 && *(dp = s2 + strlen(s2) - 1) == '\n')
738 return add(s1, add(",\n", s2));
745 struct pqpair *pq_next;
750 mcomp_format(struct mcomp *c1, struct mcomp *c2)
754 char buffer[BUFSIZ], error[BUFSIZ];
756 struct pqpair *p, *q;
765 dat[3] = sizeof(buffer) - 1;
767 fmt_compile(c1->c_fstr, &c1->c_fmt);
769 if (!(c1->c_flags & ADDRFMT)) {
770 FINDCOMP(cptr, "text");
773 if ((cp = strrchr(ap, '\n'))) /* drop ending newline */
777 fmt_scan(c1->c_fmt, buffer, sizeof(buffer) - 1, dat);
778 /* Don't need to append a newline, dctime() already did */
779 c2->c_text = getcpy(buffer);
785 (q = &pq)->pq_next = NULL;
786 while ((cp = getname(ap))) {
787 p = (struct pqpair *) mh_xcalloc((size_t) 1, sizeof(*p));
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 c1 = (struct mcomp *) mh_xcalloc((size_t) 1, sizeof(*c1));
836 c1->c_flags = flags & ~INIT;
837 if ((c1->c_name = name ? getcpy(name) : NULL))
838 c1->c_flags |= mcomp_flags(c1->c_name);
839 c1->c_text = text ? getcpy(text) : NULL;
842 c1->c_ovtxt = getcpy(global.c_ovtxt);
843 c1->c_offset = global.c_offset;
844 c1->c_ovoff = global. c_ovoff;
846 c1->c_cwidth = global.c_cwidth;
847 c1->c_flags |= global.c_flags & GFLAGS;
852 (*tail)->c_next = c1;
860 free_queue(struct mcomp **head, struct mcomp **tail)
862 struct mcomp *c1, *c2;
864 for (c1 = *head; c1; c1 = c2) {
875 free((char *) c1->c_fmt);
879 *head = *tail = NULL;
884 putcomp(struct mcomp *c1, struct mcomp *c2, int flag)
891 wid = c1->c_width ? c1->c_width : global.c_width;
892 ovoff = (c1->c_ovoff >= 0 ? c1->c_ovoff : global.c_ovoff)
894 if ((ovtxt = c1->c_ovtxt ? c1->c_ovtxt : global.c_ovtxt) == NULL)
896 if (wid < ovoff + strlen(ovtxt) + 5)
897 adios(EX_SOFTWARE, NULL, "component: %s width(%d) too small for overflow(%d)", c1->c_name, wid, ovoff + strlen(ovtxt) + 5);
900 if (c1->c_flags & CLEARTEXT) {
906 if (c1->c_fstr && (c1->c_flags & (ADDRFMT | DATEFMT | FORMAT)))
907 mcomp_format(c1, c2);
909 if (c1->c_flags & CENTER) {
910 count = (c1->c_width ? c1->c_width : global.c_width)
911 - c1->c_offset - strlen(c2->c_text);
912 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT))
913 count -= strlen(c1->c_text ? c1->c_text : c1->c_name)
915 lm = c1->c_offset + (count / 2);
921 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT)) {
922 if (c1->c_flags & UPPERCASE) /* uppercase component also */
923 for (cp = (c1->c_text ? c1->c_text : c1->c_name); *cp; cp++)
926 putstr(c1->c_text ? c1->c_text : c1->c_name);
927 if (flag != BODYCOMP) {
929 if (!(c1->c_flags & SPLIT))
930 c1->c_flags |= HDROUTPUT;
933 if ((count = c1->c_cwidth -
934 strlen(c1->c_text ? c1->c_text : c1->c_name) - 2) > 0)
938 c1->c_flags |= HDROUTPUT; /* for BODYCOMP */
941 if (flag == TWOCOMP && !(c2->c_flags & HDROUTPUT)
942 && !(c2->c_flags & NOCOMPONENT)) {
943 if (c1->c_flags & UPPERCASE)
944 for (cp = c2->c_name; *cp; cp++)
949 if (!(c1->c_flags & SPLIT))
950 c2->c_flags |= HDROUTPUT;
953 if ((count = c1->c_cwidth - strlen(c2->c_name) - 2) > 0)
957 if (c1->c_flags & UPPERCASE)
958 for (cp = c2->c_text; *cp; cp++)
965 count = (c1->c_cwidth >= 0) ? c1->c_cwidth :
966 (int)strlen(c2->c_name) + 2;
968 count = (c1->c_cwidth >= 0) ? (size_t)c1->c_cwidth :
970 c1->c_text : c1->c_name) + 2;
972 count += c1->c_offset;
974 if ((cp = oneline(c2->c_text, c1->c_flags)))
978 while ((cp = oneline(c2->c_text, c1->c_flags))) {
980 if (flag == BODYCOMP && !(c1->c_flags & NOCOMPONENT))
981 putstr(c1->c_text ? c1->c_text : c1->c_name);
987 if (flag == BODYCOMP && term == '\n')
988 c1->c_flags &= ~HDROUTPUT; /* Buffer ended on a newline */
993 oneline(char *stuff, long flags)
1001 return (onelp = NULL);
1005 if (flags & COMPRESS) {
1006 for (spc = 1, cp = ret; *onelp; onelp++)
1007 if (isspace(*onelp)) {
1008 if (*onelp == '\n' &&
1010 (flags & ADDRFMT))) {
1025 while (*onelp && *onelp != '\n')
1027 if (*onelp == '\n') {
1031 if (flags & LEFTADJUST)
1032 while (*ret == ' ' || *ret == '\t')
1035 if (*onelp == 0 && term == '\n' && (flags & NONEWLINE))
1043 putstr(char *string)
1045 if (!column && lm > 0) {
1081 ** If we are forwarding this message, and the first
1082 ** column contains a dash, then add a dash and a space.
1084 if (column == 0 && forwflg && ch == '-') {
1093 if (column >= wid) {
1097 putstr(ovtxt ? ovtxt : "");