X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/54483f16238902dcd920de1f6056df6cb0a0d8cf..ef1ba39e8dae81091b6c3e73e72825ef6edea3c6:/uip/mhshowsbr.c diff --git a/uip/mhshowsbr.c b/uip/mhshowsbr.c index 207a8e5d..8dbc2ecc 100644 --- a/uip/mhshowsbr.c +++ b/uip/mhshowsbr.c @@ -11,17 +11,19 @@ #include #include #include -#include #include #include #include #include +#include #include #ifdef HAVE_ICONV # include #endif /* ! HAVE_ICONV */ extern int debugsw; +extern int npart; +extern int ntype; int nolist = 0; @@ -31,37 +33,64 @@ char *progsw = NULL; int nomore = 0; char *formsw = NULL; +/* for output markerss and headers */ +char *folder = NULL; +char *markerform; +char *headerform; +int headersw = -1; + /* mhmisc.c */ -int part_ok (CT, int); +int part_ok (CT); +int part_exact (CT); int type_ok (CT, int); void content_error (char *, CT, char *, ...); void flush_errors (void); -/* - * prototypes - */ -void show_all_messages (CT *); -int show_content_aux (CT, int, char *, char *); - /* * static prototypes */ -static void show_single_message (CT, char *); -static void DisplayMsgHeader (CT, char *); -static int show_switch (CT, int); -static int show_content (CT, int); -static int show_content_aux2 (CT, int, char *, char *, int, int, int); -static int show_text (CT, int); -static int show_multi (CT, int); -static int show_multi_internal (CT, int); -static int show_multi_aux (CT, int, char *); -static int show_message_rfc822 (CT, int); +static void show_single_message (CT, char *, int, int, int, struct format *); +static void DisplayMsgHeader (CT, char *, int); +static int show_switch (CT, int, int, int, int, struct format *); +static int show_content (CT, int, int, int, struct format *); +static int show_content_aux2 (CT, int, char *, char *, int, int, int, struct format *); +static int show_text (CT, int, int, struct format *); +static int show_multi (CT, int, int, int, int, struct format *); +static int show_multi_internal (CT, int, int, int, int, struct format *); +static int show_multi_aux (CT, int, char *, struct format *); +static int show_message_rfc822 (CT, int, struct format *); static int show_partial (CT, int); -static int show_external (CT, int); +static int show_external (CT, int, int, int, int, struct format *); static int parse_display_string (CT, char *, int *, int *, char *, char *, size_t, int multipart); static int convert_content_charset (CT, char **); +static struct format *compile_header(char *); +static struct format *compile_marker(char *); +static void output_header (CT, struct format *); +static void output_marker (CT, struct format *, int); +static void free_markercomps (void); +static int pidcheck(int); + +/* + * Components (and list of parameters/components) we care about for the + * content marker display. + */ + +static struct comp *folder_comp = NULL; +static struct comp *part_comp = NULL; +static struct comp *ctype_comp = NULL; +static struct comp *description_comp = NULL; +static struct comp *dispo_comp = NULL; + +struct param_comp_list { + char *param; + struct comp *comp; + struct param_comp_list *next; +}; + +static struct param_comp_list *ctype_pc_list = NULL; +static struct param_comp_list *dispo_pc_list = NULL; /* @@ -69,9 +98,10 @@ static int convert_content_charset (CT, char **); */ void -show_all_messages (CT *cts) +show_all_messages (CT *cts, int concatsw, int textonly, int inlineonly) { CT ct, *ctp; + struct format *hfmt, *mfmt; /* * If form is not specified, then get default form @@ -80,6 +110,12 @@ show_all_messages (CT *cts) if (!formsw) formsw = getcpy (etcpath ("mhl.headers")); + /* + * Compile the content marker and header format lines + */ + mfmt = compile_marker(markerform); + hfmt = compile_header(headerform); + /* * If form is "mhl.null", suppress display of header. */ @@ -90,9 +126,17 @@ show_all_messages (CT *cts) ct = *ctp; /* if top-level type is ok, then display message */ - if (type_ok (ct, 1)) - show_single_message (ct, formsw); + if (type_ok (ct, 1)) { + if (headersw) output_header(ct, hfmt); + + show_single_message (ct, formsw, concatsw, textonly, inlineonly, + mfmt); + } } + + free_markercomps(); + fmt_free(hfmt, 1); + fmt_free(mfmt, 1); } @@ -101,11 +145,12 @@ show_all_messages (CT *cts) */ static void -show_single_message (CT ct, char *form) +show_single_message (CT ct, char *form, int concatsw, int textonly, + int inlineonly, struct format *fmt) { sigset_t set, oset; - int status; + int status = OK; /* Allow user executable bit so that temporary directories created by * the viewer (e.g., lynx) are going to be accessible */ @@ -116,10 +161,10 @@ show_single_message (CT ct, char *form) * the message headers. */ if (form) - DisplayMsgHeader(ct, form); + DisplayMsgHeader(ct, form, concatsw); /* Show the body of the message */ - show_switch (ct, 0); + show_switch (ct, 0, concatsw, textonly, inlineonly, fmt); if (ct->c_fp) { fclose (ct->c_fp); @@ -136,7 +181,7 @@ show_single_message (CT ct, char *form) sigaddset (&set, SIGTERM); sigprocmask (SIG_BLOCK, &set, &oset); - while (wait (&status) != NOTOK) { + while (!concatsw && wait (&status) != NOTOK) { pidcheck (status); continue; } @@ -153,7 +198,7 @@ show_single_message (CT ct, char *form) */ static void -DisplayMsgHeader (CT ct, char *form) +DisplayMsgHeader (CT ct, char *form, int concatsw) { pid_t child_id; int i, vecp; @@ -161,20 +206,20 @@ DisplayMsgHeader (CT ct, char *form) char *file; vec = argsplit(mhlproc, &file, &vecp); - vec[vecp++] = getcpy("-form"); - vec[vecp++] = getcpy(form); - vec[vecp++] = getcpy("-nobody"); + vec[vecp++] = mh_xstrdup("-form"); + vec[vecp++] = mh_xstrdup(form); + vec[vecp++] = mh_xstrdup("-nobody"); vec[vecp++] = getcpy(ct->c_file); /* * If we've specified -(no)moreproc, * then just pass that along. */ - if (nomore) { - vec[vecp++] = getcpy("-nomoreproc"); + if (nomore || concatsw) { + vec[vecp++] = mh_xstrdup("-nomoreproc"); } else if (progsw) { - vec[vecp++] = getcpy("-moreproc"); - vec[vecp++] = getcpy(progsw); + vec[vecp++] = mh_xstrdup("-moreproc"); + vec[vecp++] = mh_xstrdup(progsw); } vec[vecp] = NULL; @@ -210,11 +255,13 @@ DisplayMsgHeader (CT ct, char *form) */ static int -show_switch (CT ct, int alternate) +show_switch (CT ct, int alternate, int concatsw, int textonly, int inlineonly, + struct format *fmt) { switch (ct->c_type) { case CT_MULTIPART: - return show_multi (ct, alternate); + return show_multi (ct, alternate, concatsw, textonly, + inlineonly, fmt); case CT_MESSAGE: switch (ct->c_subtype) { @@ -222,24 +269,30 @@ show_switch (CT ct, int alternate) return show_partial (ct, alternate); case MESSAGE_EXTERNAL: - return show_external (ct, alternate); + return show_external (ct, alternate, concatsw, textonly, + inlineonly, fmt); case MESSAGE_RFC822: + return show_message_rfc822 (ct, alternate, fmt); + + /* + * Treat unknown message types as equivalent to + * application/octet-stream for now + */ default: - return show_message_rfc822 (ct, alternate); + return show_content (ct, alternate, textonly, + inlineonly, fmt); } case CT_TEXT: - return show_text (ct, alternate); + return show_text (ct, alternate, concatsw, fmt); case CT_AUDIO: case CT_IMAGE: case CT_VIDEO: case CT_APPLICATION: - return show_content (ct, alternate); - default: - adios (NULL, "unknown content type %d", ct->c_type); + return show_content (ct, alternate, textonly, inlineonly, fmt); } return 0; /* NOT REACHED */ @@ -251,24 +304,28 @@ show_switch (CT ct, int alternate) */ static int -show_content (CT ct, int alternate) +show_content (CT ct, int alternate, int textonly, int inlineonly, + struct format *fmt) { - char *cp, buffer[BUFSIZ]; + char *cp; CI ci = &ct->c_ctinfo; - /* Check for invo_name-show-type/subtype */ - snprintf (buffer, sizeof(buffer), "%s-show-%s/%s", - invo_name, ci->ci_type, ci->ci_subtype); - if ((cp = context_find (buffer)) && *cp != '\0') - return show_content_aux (ct, alternate, cp, NULL); + /* + * If we're here, we are not a text type. So we don't need to check + * the content-type. + */ + + if (textonly || (inlineonly && !is_inline(ct))) { + output_marker(ct, fmt, 1); + return OK; + } - /* Check for invo_name-show-type */ - snprintf (buffer, sizeof(buffer), "%s-show-%s", invo_name, ci->ci_type); - if ((cp = context_find (buffer)) && *cp != '\0') - return show_content_aux (ct, alternate, cp, NULL); + /* Check for invo_name-show-type[/subtype] */ + if ((cp = context_find_by_type ("show", ci->ci_type, ci->ci_subtype))) + return show_content_aux (ct, alternate, cp, NULL, fmt); if ((cp = ct->c_showproc)) - return show_content_aux (ct, alternate, cp, NULL); + return show_content_aux (ct, alternate, cp, NULL, fmt); /* complain if we are not a part of a multipart/alternative */ if (!alternate) @@ -283,11 +340,11 @@ show_content (CT ct, int alternate) */ int -show_content_aux (CT ct, int alternate, char *cp, char *cracked) +show_content_aux (CT ct, int alternate, char *cp, char *cracked, struct format *fmt) { int fd; int xstdin = 0, xlist = 0; - char *file, buffer[BUFSIZ]; + char *file = NULL, buffer[BUFSIZ]; if (!ct->c_ceopenfnx) { if (!alternate) @@ -296,11 +353,10 @@ show_content_aux (CT ct, int alternate, char *cp, char *cracked) return NOTOK; } - file = NULL; if ((fd = (*ct->c_ceopenfnx) (ct, &file)) == NOTOK) return NOTOK; if (ct->c_showproc && !strcmp (ct->c_showproc, "true")) - return (alternate ? DONE : OK); + return OK; if (! strcmp(invo_name, "mhshow") && ct->c_type == CT_TEXT && ct->c_subtype == TEXT_PLAIN) { @@ -308,11 +364,17 @@ show_content_aux (CT ct, int alternate, char *cp, char *cracked) unfortunately the type checks are necessary without some code rearrangement. And to make this really ugly, only do it in mhshow, not mhfixmsg, mhn, or mhstore. */ - if (convert_content_charset (ct, &file) != OK) { - admonish (NULL, "unable to convert character set%s to %s", - ct->c_partno ? "of part " : "", + if (convert_content_charset (ct, &file) == OK) { + (*ct->c_ceclosefnx) (ct); + if ((fd = (*ct->c_ceopenfnx) (ct, &file)) == NOTOK) + return NOTOK; + } else { + char *charset = content_charset (ct); + admonish (NULL, "unable to convert character set%s%s from %s", + ct->c_partno ? " of part " : "", ct->c_partno ? ct->c_partno : "", - content_charset (ct)); + charset); + free (charset); } } @@ -329,7 +391,7 @@ show_content_aux (CT ct, int alternate, char *cp, char *cracked) got_command: return show_content_aux2 (ct, alternate, cracked, buffer, - fd, xlist, xstdin); + fd, xlist, xstdin, fmt); } @@ -339,7 +401,7 @@ got_command: static int show_content_aux2 (CT ct, int alternate, char *cracked, char *buffer, - int fd, int xlist, int xstdin) + int fd, int xlist, int xstdin, struct format *fmt) { pid_t child_id; int i, vecp; @@ -358,11 +420,53 @@ show_content_aux2 (CT ct, int alternate, char *cracked, char *buffer, fprintf (stderr, " using command %s\n", buffer); } - if (xlist) { - if (ct->c_type == CT_MULTIPART) - list_content (ct, -1, 1, 0, 0, 0); - else - list_switch (ct, -1, 1, 0, 0, 0); + if (xlist && fmt) { + output_marker(ct, fmt, 0); + } + + /* + * If the command is a zero-length string, just write the output on + * stdout. + */ + + if (buffer[0] == '\0') { + char readbuf[BUFSIZ]; + ssize_t cc; + char lastchar = '\n'; + + if (fd == NOTOK) { + advise(NULL, "Cannot use NULL command to display content-type " + "%s/%s", ct->c_ctinfo.ci_type, ct->c_ctinfo.ci_subtype); + return NOTOK; + } + + while ((cc = read(fd, readbuf, sizeof(readbuf))) > 0) { + if ((ssize_t) fwrite(readbuf, sizeof(char), cc, stdout) < cc) { + advise ("putline", "fwrite"); + } + lastchar = readbuf[cc - 1]; + } + + if (cc < 0) { + advise("read", "while reading text content"); + return NOTOK; + } + + /* + * The MIME standards allow content to not have a trailing newline. + * But because we are (presumably) sending this to stdout, include + * a newline for text content if the final character was not a + * newline. Only do this for mhshow. + */ + + if (strcmp(invo_name, "mhshow") == 0 && ct->c_type == CT_TEXT && + ct->c_subtype == TEXT_PLAIN && lastchar != '\n') { + putc('\n', stdout); + } + + fflush(stdout); + + return OK; } vec = argsplit(buffer, &file, &vecp); @@ -379,25 +483,31 @@ show_content_aux2 (CT ct, int alternate, char *cracked, char *buffer, return NOTOK; case OK: - if (cracked) - chdir (cracked); + if (cracked) { + if (chdir (cracked) < 0) { + advise (cracked, "chdir"); + } + } if (!xstdin) dup2 (fd, 0); close (fd); execvp (file, vec); fprintf (stderr, "unable to exec "); - perror ("/bin/sh"); + perror (buffer); _exit (-1); /* NOTREACHED */ - default: + default: { + int status; + arglist_free(file, vec); - pidcheck (pidXwait (child_id, NULL)); + pidcheck ((status = pidXwait (child_id, NULL))); if (fd != NOTOK) (*ct->c_ceclosefnx) (ct); - return (alternate ? DONE : OK); + return (alternate ? OK : status); + } } } @@ -407,31 +517,30 @@ show_content_aux2 (CT ct, int alternate, char *cracked, char *buffer, */ static int -show_text (CT ct, int alternate) +show_text (CT ct, int alternate, int concatsw, struct format *fmt) { char *cp, buffer[BUFSIZ]; CI ci = &ct->c_ctinfo; - /* Check for invo_name-show-type/subtype */ - snprintf (buffer, sizeof(buffer), "%s-show-%s/%s", - invo_name, ci->ci_type, ci->ci_subtype); - if ((cp = context_find (buffer)) && *cp != '\0') - return show_content_aux (ct, alternate, cp, NULL); - - /* Check for invo_name-show-type */ - snprintf (buffer, sizeof(buffer), "%s-show-%s", invo_name, ci->ci_type); - if ((cp = context_find (buffer)) && *cp != '\0') - return show_content_aux (ct, alternate, cp, NULL); + /* Check for invo_name-show-type[/subtype] */ + if ((cp = context_find_by_type ("show", ci->ci_type, ci->ci_subtype))) + return show_content_aux (ct, alternate, cp, NULL, fmt); /* * Use default method if content is text/plain, or if * if it is not a text part of a multipart/alternative */ if (!alternate || ct->c_subtype == TEXT_PLAIN) { - snprintf (buffer, sizeof(buffer), "%%l%s %%F", progsw ? progsw : - moreproc && *moreproc ? moreproc : DEFAULT_PAGER); + if (concatsw) { + if (ct->c_termproc) + snprintf(buffer, sizeof(buffer), "%%lcat"); + else + snprintf(buffer, sizeof(buffer), "%%l"); + } else + snprintf (buffer, sizeof(buffer), "%%l%s %%F", progsw ? progsw : + moreproc && *moreproc ? moreproc : DEFAULT_PAGER); cp = (ct->c_showproc = add (buffer, NULL)); - return show_content_aux (ct, alternate, cp, NULL); + return show_content_aux (ct, alternate, cp, NULL, fmt); } return NOTOK; @@ -443,31 +552,27 @@ show_text (CT ct, int alternate) */ static int -show_multi (CT ct, int alternate) +show_multi (CT ct, int alternate, int concatsw, int textonly, int inlineonly, + struct format *fmt) { - char *cp, buffer[BUFSIZ]; + char *cp; CI ci = &ct->c_ctinfo; - /* Check for invo_name-show-type/subtype */ - snprintf (buffer, sizeof(buffer), "%s-show-%s/%s", - invo_name, ci->ci_type, ci->ci_subtype); - if ((cp = context_find (buffer)) && *cp != '\0') - return show_multi_aux (ct, alternate, cp); - - /* Check for invo_name-show-type */ - snprintf (buffer, sizeof(buffer), "%s-show-%s", invo_name, ci->ci_type); - if ((cp = context_find (buffer)) && *cp != '\0') - return show_multi_aux (ct, alternate, cp); + /* Check for invo_name-show-type[/subtype] */ + if ((cp = context_find_by_type ("show", ci->ci_type, ci->ci_subtype))) + return show_multi_aux (ct, alternate, cp, fmt); - if ((cp = ct->c_showproc)) - return show_multi_aux (ct, alternate, cp); + if ((cp = ct->c_showproc)) { + return show_multi_aux (ct, alternate, cp, fmt); + } /* * Use default method to display this multipart content. Even * unknown types are displayable, since they're treated as mixed * per RFC 2046. */ - return show_multi_internal (ct, alternate); + return show_multi_internal (ct, alternate, concatsw, textonly, + inlineonly, fmt); } @@ -477,11 +582,16 @@ show_multi (CT ct, int alternate) */ static int -show_multi_internal (CT ct, int alternate) +show_multi_internal (CT ct, int alternate, int concatsw, int textonly, + int inlineonly, struct format *fmt) { int alternating, nowalternate, result; struct multipart *m = (struct multipart *) ct->c_ctparams; struct part *part; + int request_matched; + int display_success; + int mult_alt_done; + int ret; CT p; alternating = 0; @@ -492,38 +602,58 @@ show_multi_internal (CT ct, int alternate) alternating = 1; } -/* - * alternate -> we are a part inside an multipart/alternative - * alternating -> we are a multipart/alternative - */ + /* + * alternate -> we are a part inside a multipart/alternative + * alternating -> we are a multipart/alternative + */ - result = alternate ? NOTOK : OK; + result = NOTOK; + request_matched = 0; + display_success = 0; + mult_alt_done = 0; for (part = m->mp_parts; part; part = part->mp_next) { p = part->mp_part; - if (part_ok (p, 1) && type_ok (p, 1)) { + /* while looking for the right displayable alternative, we + * use a looser search criterion than we do after finding it. + * specifically, while still looking, part_ok() will match + * "parent" parts (e.g. "-part 2" where 2 is a high-level + * multipart). after finding it, we use part_exact() to only + * choose a part that was requested explicitly. + */ + if ((part_exact(p) && type_ok(p, 1)) || + (!mult_alt_done && part_ok (p) && type_ok (p, 1))) { + int inneresult; - inneresult = show_switch (p, nowalternate); + inneresult = show_switch (p, nowalternate, concatsw, textonly, + inlineonly, fmt); switch (inneresult) { - case NOTOK: + case NOTOK: /* hard display error */ + request_matched = 1; if (alternate && !alternating) { result = NOTOK; goto out; } continue; - case OK: - case DONE: + case DONE: /* found no match on content type */ + continue; + + case OK: /* display successful */ + request_matched = 1; + display_success = 1; + result = OK; + + /* if we got success on a sub-part of + * multipart/alternative, we're done, unless + * there's a chance an explicit part should be + * matched later in the alternatives. */ if (alternating) { - result = DONE; - break; - } - if (alternate) { + mult_alt_done = 1; + } else if (alternate) { alternate = nowalternate = 0; - if (result == NOTOK) - result = inneresult; } continue; } @@ -531,15 +661,23 @@ show_multi_internal (CT ct, int alternate) } } - if (alternating && !part) { + /* we're supposed to be displaying at least something from a + * multipart/alternative. if we've had parts to consider, and + * we've had no success, then we should complain. we shouldn't + * complain if none of the parts matched any -part or -type option. + */ + if (alternating && request_matched && !display_success) { + /* if we're ourselves an alternate. don't complain yet. */ if (!alternate) content_error (NULL, ct, "don't know how to display any of the contents"); result = NOTOK; - goto out; } out: - return result; + /* if no parts matched what was requested, there can't have been + * any display errors. we report DONE rather than OK. */ + ret = request_matched ? result : DONE; + return ret; } @@ -549,12 +687,12 @@ out: */ static int -show_multi_aux (CT ct, int alternate, char *cp) +show_multi_aux (CT ct, int alternate, char *cp, struct format *fmt) { /* xstdin is only used in the call to parse_display_string(): its value is ignored in the function. */ int xstdin = 0, xlist = 0; - char *file, buffer[BUFSIZ]; + char *file = NULL, buffer[BUFSIZ]; struct multipart *m = (struct multipart *) ct->c_ctparams; struct part *part; CT p; @@ -569,14 +707,13 @@ show_multi_aux (CT ct, int alternate, char *cp) } if (p->c_storage == NULL) { - file = NULL; if ((*p->c_ceopenfnx) (p, &file) == NOTOK) return NOTOK; p->c_storage = add (file, NULL); if (p->c_showproc && !strcmp (p->c_showproc, "true")) - return (alternate ? DONE : OK); + return OK; (*p->c_ceclosefnx) (p); } } @@ -587,7 +724,7 @@ show_multi_aux (CT ct, int alternate, char *cp) return NOTOK; } - return show_content_aux2 (ct, alternate, NULL, buffer, NOTOK, xlist, 0); + return show_content_aux2 (ct, alternate, NULL, buffer, NOTOK, xlist, 0, fmt); } @@ -596,29 +733,22 @@ show_multi_aux (CT ct, int alternate, char *cp) */ static int -show_message_rfc822 (CT ct, int alternate) +show_message_rfc822 (CT ct, int alternate, struct format *fmt) { - char *cp, buffer[BUFSIZ]; + char *cp; CI ci = &ct->c_ctinfo; - /* Check for invo_name-show-type/subtype */ - snprintf (buffer, sizeof(buffer), "%s-show-%s/%s", - invo_name, ci->ci_type, ci->ci_subtype); - if ((cp = context_find (buffer)) && *cp != '\0') - return show_content_aux (ct, alternate, cp, NULL); - - /* Check for invo_name-show-type */ - snprintf (buffer, sizeof(buffer), "%s-show-%s", invo_name, ci->ci_type); - if ((cp = context_find (buffer)) && *cp != '\0') - return show_content_aux (ct, alternate, cp, NULL); + /* Check for invo_name-show-type[/subtype] */ + if ((cp = context_find_by_type ("show", ci->ci_type, ci->ci_subtype))) + return show_content_aux (ct, alternate, cp, NULL, fmt); if ((cp = ct->c_showproc)) - return show_content_aux (ct, alternate, cp, NULL); + return show_content_aux (ct, alternate, cp, NULL, fmt); /* default method for message/rfc822 */ if (ct->c_subtype == MESSAGE_RFC822) { - cp = (ct->c_showproc = add ("%pecho -file %F", NULL)); - return show_content_aux (ct, alternate, cp, NULL); + cp = (ct->c_showproc = add ("%pshow -file %F", NULL)); + return show_content_aux (ct, alternate, cp, NULL, fmt); } /* complain if we are not a part of a multipart/alternative */ @@ -651,7 +781,8 @@ show_partial (CT ct, int alternate) */ static int -show_external (CT ct, int alternate) +show_external (CT ct, int alternate, int concatsw, int textonly, int inlineonly, + struct format *fmt) { struct exbody *e = (struct exbody *) ct->c_ctparams; CT p = e->eb_content; @@ -659,7 +790,7 @@ show_external (CT ct, int alternate) if (!type_ok (p, 0)) return OK; - return show_switch (p, alternate); + return show_switch (p, alternate, concatsw, textonly, inlineonly, fmt); } @@ -935,16 +1066,7 @@ convert_charset (CT ct, char *dest_charset, int *message_mods) { char *src_charset = content_charset (ct); int status = OK; - /* norm_charmap() is case sensitive. */ - char *src_charset_u = upcase (src_charset); - char *dest_charset_u = upcase (dest_charset); - int different_charsets = - strcmp (norm_charmap (src_charset), norm_charmap (dest_charset)); - - free (dest_charset_u); - free (src_charset_u); - - if (different_charsets) { + if (strcasecmp (src_charset, dest_charset)) { #ifdef HAVE_ICONV iconv_t conv_desc = NULL; char *dest; @@ -955,12 +1077,16 @@ convert_charset (CT ct, char *dest_charset, int *message_mods) { size_t end; int opened_input_file = 0; char src_buffer[BUFSIZ]; + size_t dest_buffer_size = BUFSIZ; + char *dest_buffer = mh_xmalloc(dest_buffer_size); HF hf; char *tempfile; + int fromutf8 = !strcasecmp(src_charset, "UTF-8"); if ((conv_desc = iconv_open (dest_charset, src_charset)) == (iconv_t) -1) { advise (NULL, "Can't convert %s to %s", src_charset, dest_charset); + free (src_charset); return NOTOK; } @@ -1001,20 +1127,63 @@ convert_charset (CT ct, char *dest_charset, int *message_mods) { while ((inbytes = fread (src_buffer, 1, min (bytes_to_read, sizeof src_buffer), *fp)) > 0) { - char dest_buffer[BUFSIZ]; ICONV_CONST char *ib = src_buffer; char *ob = dest_buffer; - size_t outbytes = sizeof dest_buffer; + size_t outbytes = dest_buffer_size; size_t outbytes_before = outbytes; if (end > 0) bytes_to_read -= inbytes; +iconv_start: if (iconv (conv_desc, &ib, &inbytes, &ob, &outbytes) == (size_t) -1) { + if (errno == E2BIG) { + /* + * Bump up the buffer by at least a factor of 2 + * over what we need. + */ + size_t bumpup = inbytes * 2, ob_off = ob - dest_buffer; + dest_buffer_size += bumpup; + dest_buffer = mh_xrealloc(dest_buffer, + dest_buffer_size); + ob = dest_buffer + ob_off; + outbytes += bumpup; + outbytes_before += bumpup; + goto iconv_start; + } + if (errno == EINVAL) { + /* middle of multi-byte sequence */ + if (write (fd, dest_buffer, outbytes_before - outbytes) < 0) { + advise (dest, "write"); + } + fseeko (*fp, -inbytes, SEEK_CUR); + if (end > 0) bytes_to_read += inbytes; + /* advise(NULL, "convert_charset: EINVAL"); */ + continue; + } + if (errno == EILSEQ) { + /* invalid multi-byte sequence */ + if (fromutf8) { + for (++ib, --inbytes; + inbytes > 0 && + (((unsigned char) *ib) & 0xc0) == 0x80; + ++ib, --inbytes) + continue; + } else { + ib++; inbytes--; /* skip it */ + } + (*ob++) = '?'; outbytes --; + /* advise(NULL, "convert_charset: EILSEQ"); */ + goto iconv_start; + } + advise (NULL, "convert_charset: errno = %d", errno); status = NOTOK; break; } else { - write (fd, dest_buffer, outbytes_before - outbytes); + if (write (fd, dest_buffer, outbytes_before - outbytes) + < 0) { + advise (dest, "write"); + } } } @@ -1073,40 +1242,286 @@ convert_charset (CT ct, char *dest_charset, int *message_mods) { } else { (void) m_unlink (dest); } + free(dest_buffer); #else /* ! HAVE_ICONV */ NMH_UNUSED (message_mods); advise (NULL, "Can't convert %s to %s without iconv", src_charset, dest_charset); + errno = ENOSYS; status = NOTOK; #endif /* ! HAVE_ICONV */ } + free (src_charset); return status; } static int convert_content_charset (CT ct, char **file) { + int status = OK; + #ifdef HAVE_ICONV /* Using current locale, see if the content needs to be converted. */ /* content_charset() cannot return NULL. */ - char *charset = content_charset (ct); + char *src_charset = content_charset (ct); - if (! check_charset (charset, strlen (charset))) { + if (! check_charset (src_charset, strlen (src_charset))) { int unused = 0; - if (convert_charset (ct, get_charset (), &unused) == 0) { + char *dest_charset = getcpy (get_charset ()); + + if (convert_charset (ct, dest_charset, &unused) == 0) { *file = ct->c_cefile.ce_file; } else { - return NOTOK; + status = NOTOK; } + + free (dest_charset); } + free (src_charset); #else /* ! HAVE_ICONV */ NMH_UNUSED (ct); NMH_UNUSED (file); #endif /* ! HAVE_ICONV */ - return OK; + return status; +} + +/* + * Compile our format string and save any parameters we care about. + */ + +#define DEFAULT_HEADER "[ Message %{folder}%<{folder}:%>%(msg) ]" +#define DEFAULT_MARKER "[ part %{part} - %{content-type} - " \ + "%<{description}%{description}" \ + "%?{cdispo-filename}%{cdispo-filename}" \ + "%|%{ctype-name}%> " \ + "%(kilo(size))B %<(unseen)\\(suppressed\\)%> ]" + +static struct format * +compile_header(char *form) +{ + struct format *fmt; + char *fmtstring; + struct comp *comp = NULL; + unsigned int bucket; + + fmtstring = new_fs(form, NULL, DEFAULT_HEADER); + + (void) fmt_compile(fmtstring, &fmt, 1); + free_fs(); + + while ((comp = fmt_nextcomp(comp, &bucket)) != NULL) { + if (strcasecmp(comp->c_name, "folder") == 0) { + folder_comp = comp; + } + } + + return fmt; +} + +static struct format * +compile_marker(char *form) +{ + struct format *fmt; + char *fmtstring; + struct comp *comp = NULL; + unsigned int bucket; + struct param_comp_list *pc_entry; + + fmtstring = new_fs(form, NULL, DEFAULT_MARKER); + + (void) fmt_compile(fmtstring, &fmt, 1); + free_fs(); + + /* + * Things we care about: + * + * part - Part name (e.g., 1.1) + * content-type - Content-Type + * description - Content-Description + * disposition - Content-Disposition (inline, attachment) + * ctype- - Content-Type parameter + * cdispo- - Content-Disposition parameter + */ + + while ((comp = fmt_nextcomp(comp, &bucket)) != NULL) { + if (strcasecmp(comp->c_name, "part") == 0) { + part_comp = comp; + } else if (strcasecmp(comp->c_name, "content-type") == 0) { + ctype_comp = comp; + } else if (strcasecmp(comp->c_name, "description") == 0) { + description_comp = comp; + } else if (strcasecmp(comp->c_name, "disposition") == 0) { + dispo_comp = comp; + } else if (strncasecmp(comp->c_name, "ctype-", 6) == 0 && + strlen(comp->c_name) > 6) { + NEW(pc_entry); + pc_entry->param = mh_xstrdup(comp->c_name + 6); + pc_entry->comp = comp; + pc_entry->next = ctype_pc_list; + ctype_pc_list = pc_entry; + } else if (strncasecmp(comp->c_name, "cdispo-", 7) == 0 && + strlen(comp->c_name) > 7) { + NEW(pc_entry); + pc_entry->param = mh_xstrdup(comp->c_name + 7); + pc_entry->comp = comp; + pc_entry->next = dispo_pc_list; + dispo_pc_list = pc_entry; + } + } + + return fmt; +} + +/* + * Output on stdout an appropriate marker for this content, using mh-format + */ + +static void +output_header(CT ct, struct format *fmt) +{ + charstring_t outbuf = charstring_create (BUFSIZ); + int dat[5] = { 0 }; + char *endp; + int message = 0; + + if (folder_comp) + folder_comp->c_text = getcpy(folder); + + if (ct->c_file && *ct->c_file) { + message = strtol(ct->c_file, &endp, 10); + if (*endp) message = 0; + dat[0] = message; + } + + /* it would be nice to populate dat[2], for %(size) here, + * but it's not available. it might also be nice to know + * if the message originally had any mime parts or not -- but + * there's also no record of that. (except for MIME-version:) + */ + + fmt_scan(fmt, outbuf, BUFSIZ, dat, NULL); + + fputs(charstring_buffer (outbuf), stdout); + charstring_free (outbuf); + + fmt_freecomptext(); +} + +static void +output_marker(CT ct, struct format *fmt, int hidden) +{ + charstring_t outbuf = charstring_create (BUFSIZ); + struct param_comp_list *pcentry; + int partsize; + int message = 0; + char *endp; + int dat[5] = { 0 }; + + /* + * Grab any items we care about. + */ + + if (ctype_comp && ct->c_ctinfo.ci_type) { + ctype_comp->c_text = concat(ct->c_ctinfo.ci_type, "/", + ct->c_ctinfo.ci_subtype, NULL); + } + + if (part_comp && ct->c_partno) { + part_comp->c_text = mh_xstrdup(ct->c_partno); + } + + if (description_comp && ct->c_descr) { + description_comp->c_text = mh_xstrdup(ct->c_descr); + } + + if (dispo_comp && ct->c_dispo_type) { + dispo_comp->c_text = mh_xstrdup(ct->c_dispo_type); + } + + for (pcentry = ctype_pc_list; pcentry != NULL; pcentry = pcentry->next) { + pcentry->comp->c_text = get_param(ct->c_ctinfo.ci_first_pm, + pcentry->param, '?', 0); + } + + for (pcentry = dispo_pc_list; pcentry != NULL; pcentry = pcentry->next) { + pcentry->comp->c_text = get_param(ct->c_dispo_first, + pcentry->param, '?', 0); + } + + if (ct->c_cesizefnx) + partsize = (*ct->c_cesizefnx) (ct); + else + partsize = ct->c_end - ct->c_begin; + + if (ct->c_file && *ct->c_file) { + message = strtol(ct->c_file, &endp, 10); + if (*endp) message = 0; + dat[0] = message; + } + dat[2] = partsize; + + /* make the part's hidden aspect available by overloading the + * %(unseen) function. make the part's size available via %(size). + * see comments in h/fmt_scan.h. + */ + dat[4] = hidden; + + fmt_scan(fmt, outbuf, BUFSIZ, dat, NULL); + + fputs(charstring_buffer (outbuf), stdout); + charstring_free (outbuf); + + fmt_freecomptext(); +} + +/* + * Reset (and free) any of the saved marker text + */ + +static void +free_markercomps(void) +{ + struct param_comp_list *pc_entry, *pc2; + + folder_comp = NULL; + part_comp = NULL; + ctype_comp = NULL; + description_comp = NULL; + dispo_comp = NULL; + + for (pc_entry = ctype_pc_list; pc_entry != NULL; ) { + free(pc_entry->param); + pc2 = pc_entry->next; + free(pc_entry); + pc_entry = pc2; + } + + for (pc_entry = dispo_pc_list; pc_entry != NULL; ) { + free(pc_entry->param); + pc2 = pc_entry->next; + free(pc_entry); + pc_entry = pc2; + } +} + +/* + * Exit if the display process returned with a nonzero exit code, or terminated + * with a SIGQUIT signal. + */ + +static int +pidcheck (int status) +{ + if ((status & 0xff00) == 0xff00 || (status & 0x007f) != SIGQUIT) + return status; + + fflush (stdout); + fflush (stderr); + done (1); + return 1; }