/*
* mhshowsbr.c -- routines to display the contents of MIME messages
*
- * $Id$
- *
* This code is Copyright (c) 2002, by the authors of nmh. See the
* COPYRIGHT file in the root directory of the nmh distribution for
* complete copyright information.
#include <fcntl.h>
#include <h/signals.h>
#include <h/md5.h>
-#include <errno.h>
#include <setjmp.h>
-#include <signal.h>
#include <h/mts.h>
#include <h/tws.h>
#include <h/mime.h>
#include <h/mhparse.h>
#include <h/utils.h>
-
-#ifdef HAVE_SYS_WAIT_H
-# include <sys/wait.h>
-#endif
-
-/*
- * Just use sigjmp/longjmp on older machines that
- * don't have sigsetjmp/siglongjmp.
- */
-#ifndef HAVE_SIGSETJMP
-# define sigjmp_buf jmp_buf
-# define sigsetjmp(env,mask) setjmp(env)
-# define siglongjmp(env,val) longjmp(env,val)
-#endif
+#ifdef HAVE_ICONV
+# include <iconv.h>
+#endif /* ! HAVE_ICONV */
extern int debugsw;
-int pausesw = 1;
-int serialsw = 0;
int nolist = 0;
char *progsw = NULL;
int nomore = 0;
char *formsw = NULL;
-pid_t xpid = 0;
-
-static sigjmp_buf intrenv;
-
-
-/* termsbr.c */
-int SOprintf (char *, ...);
-
-/* mhparse.c */
-int pidcheck (int);
/* mhmisc.c */
int part_ok (CT, int);
void content_error (char *, CT, char *, ...);
void flush_errors (void);
-/* mhlistsbr.c */
-int list_switch (CT, int, int, int, int);
-int list_content (CT, int, int, int, int);
-
/*
* prototypes
*/
void show_all_messages (CT *);
-int show_content_aux (CT, int, int, char *, char *);
+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, int);
-static int show_content (CT, int, int);
-static int show_content_aux2 (CT, int, int, char *, char *, int, int, int, int, int);
-static int show_text (CT, int, int);
-static int show_multi (CT, int, int);
-static int show_multi_internal (CT, int, int);
-static int show_multi_aux (CT, int, int, char *);
-static int show_message_rfc822 (CT, int, int);
-static int show_partial (CT, int, int);
-static int show_external (CT, int, int);
-static RETSIGTYPE intrser (int);
+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 int show_partial (CT, int);
+static int show_external (CT, int);
+static int parse_display_string (CT, char *, int *, int *, char *, char *,
+ size_t, int multipart);
+static int convert_content_charset (CT, char **);
+static int pidcheck(int);
/*
{
sigset_t set, oset;
-#ifdef WAITINT
int status;
-#else
- union wait status;
-#endif
/* Allow user executable bit so that temporary directories created by
* the viewer (e.g., lynx) are going to be accessible */
*/
if (form)
DisplayMsgHeader(ct, form);
- else
- xpid = 0;
/* Show the body of the message */
- show_switch (ct, 1, 0);
+ show_switch (ct, 0);
if (ct->c_fp) {
fclose (ct->c_fp);
sigaddset (&set, SIGINT);
sigaddset (&set, SIGQUIT);
sigaddset (&set, SIGTERM);
- SIGPROCMASK (SIG_BLOCK, &set, &oset);
+ sigprocmask (SIG_BLOCK, &set, &oset);
while (wait (&status) != NOTOK) {
-#ifdef WAITINT
pidcheck (status);
-#else
- pidcheck (status.w_status);
-#endif
continue;
}
/* reset the signal mask */
- SIGPROCMASK (SIG_SETMASK, &oset, &set);
+ sigprocmask (SIG_SETMASK, &oset, &set);
- xpid = 0;
flush_errors ();
}
{
pid_t child_id;
int i, vecp;
- char *vec[8];
+ char **vec;
+ char *file;
- vecp = 0;
- vec[vecp++] = r1bindex (mhlproc, '/');
- vec[vecp++] = "-form";
- vec[vecp++] = form;
- vec[vecp++] = "-nobody";
- vec[vecp++] = ct->c_file;
+ vec = argsplit(mhlproc, &file, &vecp);
+ vec[vecp++] = getcpy("-form");
+ vec[vecp++] = getcpy(form);
+ vec[vecp++] = getcpy("-nobody");
+ vec[vecp++] = getcpy(ct->c_file);
/*
* If we've specified -(no)moreproc,
* then just pass that along.
*/
if (nomore) {
- vec[vecp++] = "-nomoreproc";
+ vec[vecp++] = getcpy("-nomoreproc");
} else if (progsw) {
- vec[vecp++] = "-moreproc";
- vec[vecp++] = progsw;
+ vec[vecp++] = getcpy("-moreproc");
+ vec[vecp++] = getcpy(progsw);
}
vec[vecp] = NULL;
fflush (stdout);
- for (i = 0; (child_id = vfork()) == NOTOK && i < 5; i++)
+ for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
sleep (5);
switch (child_id) {
/* NOTREACHED */
case OK:
- execvp (mhlproc, vec);
+ execvp (file, vec);
fprintf (stderr, "unable to exec ");
perror (mhlproc);
_exit (-1);
/* NOTREACHED */
default:
- xpid = -child_id;
+ pidcheck(pidwait(child_id, NOTOK));
break;
}
+
+ arglist_free(file, vec);
}
*/
static int
-show_switch (CT ct, int serial, int alternate)
+show_switch (CT ct, int alternate)
{
switch (ct->c_type) {
case CT_MULTIPART:
- return show_multi (ct, serial, alternate);
- break;
+ return show_multi (ct, alternate);
case CT_MESSAGE:
switch (ct->c_subtype) {
case MESSAGE_PARTIAL:
- return show_partial (ct, serial, alternate);
- break;
+ return show_partial (ct, alternate);
case MESSAGE_EXTERNAL:
- return show_external (ct, serial, alternate);
- break;
+ return show_external (ct, alternate);
case MESSAGE_RFC822:
default:
- return show_message_rfc822 (ct, serial, alternate);
- break;
+ return show_message_rfc822 (ct, alternate);
}
- break;
case CT_TEXT:
- return show_text (ct, serial, alternate);
- break;
+ return show_text (ct, alternate);
case CT_AUDIO:
case CT_IMAGE:
case CT_VIDEO:
case CT_APPLICATION:
- return show_content (ct, serial, alternate);
- break;
+ return show_content (ct, alternate);
default:
adios (NULL, "unknown content type %d", ct->c_type);
- break;
}
return 0; /* NOT REACHED */
*/
static int
-show_content (CT ct, int serial, int alternate)
+show_content (CT ct, int alternate)
{
char *cp, buffer[BUFSIZ];
CI ci = &ct->c_ctinfo;
- /* Check for mhn-show-type/subtype */
+ /* 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, serial, alternate, cp, NULL);
+ return show_content_aux (ct, alternate, cp, NULL);
- /* Check for mhn-show-type */
+ /* 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, serial, alternate, cp, NULL);
+ return show_content_aux (ct, alternate, cp, NULL);
if ((cp = ct->c_showproc))
- return show_content_aux (ct, serial, alternate, cp, NULL);
+ return show_content_aux (ct, alternate, cp, NULL);
/* complain if we are not a part of a multipart/alternative */
if (!alternate)
*/
int
-show_content_aux (CT ct, int serial, int alternate, char *cp, char *cracked)
+show_content_aux (CT ct, int alternate, char *cp, char *cracked)
{
- int fd, len, buflen, quoted;
- int xstdin, xlist, xpause, xtty;
- char *bp, *pp, *file, buffer[BUFSIZ];
- CI ci = &ct->c_ctinfo;
+ int fd;
+ int xstdin = 0, xlist = 0;
+ char *file, buffer[BUFSIZ];
if (!ct->c_ceopenfnx) {
if (!alternate)
return NOTOK;
if (ct->c_showproc && !strcmp (ct->c_showproc, "true"))
return (alternate ? DONE : OK);
-
- xlist = 0;
- xpause = 0;
- xstdin = 0;
- xtty = 0;
+
+ if (! strcmp(invo_name, "mhshow") &&
+ ct->c_type == CT_TEXT && ct->c_subtype == TEXT_PLAIN) {
+ /* This has to be done after calling c_ceopenfnx, so
+ 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 " : "",
+ ct->c_partno ? ct->c_partno : "",
+ content_charset (ct));
+ }
+ }
if (cracked) {
strncpy (buffer, cp, sizeof(buffer));
goto got_command;
}
- /* get buffer ready to go */
- bp = buffer;
- buflen = sizeof(buffer) - 1;
- bp[0] = bp[buflen] = '\0';
- quoted = 0;
-
- /* Now parse display string */
- for ( ; *cp && buflen > 0; cp++) {
- if (*cp == '%') {
- pp = bp;
-
- switch (*++cp) {
- case 'a':
- /* insert parameters from Content-Type field */
- {
- char **ap, **ep;
- char *s = "";
-
- for (ap = ci->ci_attrs, ep = ci->ci_values; *ap; ap++, ep++) {
- snprintf (bp, buflen, "%s%s=\"%s\"", s, *ap, *ep);
- len = strlen (bp);
- bp += len;
- buflen -= len;
- s = " ";
- }
- }
- break;
-
- case 'd':
- /* insert content description */
- if (ct->c_descr) {
- char *s;
-
- s = trimcpy (ct->c_descr);
- strncpy (bp, s, buflen);
- free (s);
- }
- break;
-
- case 'e':
- /* exclusive execution */
- xtty = 1;
- break;
-
- case 'F':
- /* %e, %f, and stdin is terminal not content */
- xstdin = 1;
- xtty = 1;
- /* and fall... */
-
- case 'f':
- /* insert filename containing content */
- snprintf (bp, buflen, "'%s'", file);
- /* since we've quoted the file argument, set things up
- * to look past it, to avoid problems with the quoting
- * logic below. (I know, I should figure out what's
- * broken with the quoting logic, but..)
- */
- len = strlen(bp);
- buflen -= len;
- bp += len;
- pp = bp;
- break;
-
- case 'p':
- /* %l, and pause prior to displaying content */
- xpause = pausesw;
- /* and fall... */
-
- case 'l':
- /* display listing prior to displaying content */
- xlist = !nolist;
- break;
-
- case 's':
- /* insert subtype of content */
- strncpy (bp, ci->ci_subtype, buflen);
- break;
-
- case '%':
- /* insert character % */
- goto raw;
-
- default:
- *bp++ = *--cp;
- *bp = '\0';
- buflen--;
- continue;
- }
- len = strlen (bp);
- bp += len;
- buflen -= len;
-
- /* Did we actually insert something? */
- if (bp != pp) {
- /* Insert single quote if not inside quotes already */
- if (!quoted && buflen) {
- len = strlen (pp);
- memmove (pp + 1, pp, len);
- *pp++ = '\'';
- buflen--;
- bp++;
- }
- /* Escape existing quotes */
- while ((pp = strchr (pp, '\'')) && buflen > 3) {
- len = strlen (pp++);
- memmove (pp + 3, pp, len);
- *pp++ = '\\';
- *pp++ = '\'';
- *pp++ = '\'';
- buflen -= 3;
- bp += 3;
- }
- /* If pp is still set, that means we ran out of space. */
- if (pp)
- buflen = 0;
- if (!quoted && buflen) {
- *bp++ = '\'';
- *bp = '\0';
- buflen--;
- }
- }
- } else {
-raw:
- *bp++ = *cp;
- *bp = '\0';
- buflen--;
-
- if (*cp == '\'')
- quoted = !quoted;
- }
- }
-
- if (buflen <= 0 || (ct->c_termproc && buflen <= strlen(ct->c_termproc))) {
- /* content_error would provide a more useful error message
- * here, except that if we got overrun, it probably would
- * too.
- */
- fprintf(stderr, "Buffer overflow constructing show command!\n");
+ if (parse_display_string (ct, cp, &xstdin, &xlist, file, buffer,
+ sizeof(buffer) - 1, 0)) {
+ admonish (NULL, "Buffer overflow constructing show command!\n");
return NOTOK;
}
- /* use charset string to modify display method */
- if (ct->c_termproc) {
- char term[BUFSIZ];
-
- strncpy (term, buffer, sizeof(term));
- snprintf (buffer, sizeof(buffer), ct->c_termproc, term);
- }
-
got_command:
- return show_content_aux2 (ct, serial, alternate, cracked, buffer,
- fd, xlist, xpause, xstdin, xtty);
+ return show_content_aux2 (ct, alternate, cracked, buffer,
+ fd, xlist, xstdin);
}
*/
static int
-show_content_aux2 (CT ct, int serial, int alternate, char *cracked, char *buffer,
- int fd, int xlist, int xpause, int xstdin, int xtty)
+show_content_aux2 (CT ct, int alternate, char *cracked, char *buffer,
+ int fd, int xlist, int xstdin)
{
pid_t child_id;
- int i;
- char *vec[4], exec[BUFSIZ + sizeof "exec "];
-
+ int i, vecp;
+ char **vec, *file;
+
if (debugsw || cracked) {
fflush (stdout);
fprintf (stderr, " using command %s\n", buffer);
}
- if (xpid < 0 || (xtty && xpid)) {
- if (xpid < 0)
- xpid = -xpid;
- pidcheck(pidwait (xpid, NOTOK));
- xpid = 0;
- }
-
if (xlist) {
- char prompt[BUFSIZ];
-
if (ct->c_type == CT_MULTIPART)
- list_content (ct, -1, 1, 0, 0);
+ list_content (ct, -1, 1, 0, 0, 0);
else
- list_switch (ct, -1, 1, 0, 0);
-
- if (xpause && SOprintf ("Press <return> to show content..."))
- printf ("Press <return> to show content...");
-
- if (xpause) {
- int intr;
- SIGNAL_HANDLER istat;
-
- istat = SIGNAL (SIGINT, intrser);
- if ((intr = sigsetjmp (intrenv, 1)) == OK) {
- fflush (stdout);
- prompt[0] = 0;
- read (fileno (stdout), prompt, sizeof(prompt));
- }
- SIGNAL (SIGINT, istat);
- if (intr != OK || prompt[0] == 'n') {
- (*ct->c_ceclosefnx) (ct);
- return (alternate ? DONE : NOTOK);
- }
- if (prompt[0] == 'q') done(OK);
- }
+ list_switch (ct, -1, 1, 0, 0, 0);
}
- snprintf (exec, sizeof(exec), "exec %s", buffer);
-
- vec[0] = "/bin/sh";
- vec[1] = "-c";
- vec[2] = exec;
- vec[3] = NULL;
+ vec = argsplit(buffer, &file, &vecp);
+ vec[vecp++] = NULL;
fflush (stdout);
- for (i = 0; (child_id = vfork ()) == NOTOK && i < 5; i++)
+ for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
sleep (5);
switch (child_id) {
case NOTOK:
if (!xstdin)
dup2 (fd, 0);
close (fd);
- execvp ("/bin/sh", vec);
+ execvp (file, vec);
fprintf (stderr, "unable to exec ");
perror ("/bin/sh");
_exit (-1);
/* NOTREACHED */
default:
- if (!serial) {
- ct->c_pid = child_id;
- if (xtty)
- xpid = child_id;
- } else {
- pidcheck (pidXwait (child_id, NULL));
- }
+ arglist_free(file, vec);
+
+ pidcheck (pidXwait (child_id, NULL));
if (fd != NOTOK)
(*ct->c_ceclosefnx) (ct);
*/
static int
-show_text (CT ct, int serial, int alternate)
+show_text (CT ct, int alternate)
{
char *cp, buffer[BUFSIZ];
CI ci = &ct->c_ctinfo;
- /* Check for mhn-show-type/subtype */
+ /* 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, serial, alternate, cp, NULL);
+ return show_content_aux (ct, alternate, cp, NULL);
- /* Check for mhn-show-type */
+ /* 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, serial, alternate, cp, NULL);
+ return show_content_aux (ct, alternate, cp, NULL);
/*
* 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), "%%p%s '%%F'", progsw ? progsw :
- moreproc && *moreproc ? moreproc : "more");
+ 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, serial, alternate, cp, NULL);
+ return show_content_aux (ct, alternate, cp, NULL);
}
return NOTOK;
*/
static int
-show_multi (CT ct, int serial, int alternate)
+show_multi (CT ct, int alternate)
{
char *cp, buffer[BUFSIZ];
CI ci = &ct->c_ctinfo;
- /* Check for mhn-show-type/subtype */
+ /* 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, serial, alternate, cp);
+ return show_multi_aux (ct, alternate, cp);
- /* Check for mhn-show-type */
+ /* 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, serial, alternate, cp);
+ return show_multi_aux (ct, alternate, cp);
if ((cp = ct->c_showproc))
- return show_multi_aux (ct, serial, alternate, cp);
+ return show_multi_aux (ct, alternate, cp);
/*
- * Use default method to display this multipart content
- * if it is not a (nested) part of a multipart/alternative,
- * or if it is one of the known subtypes of multipart.
+ * Use default method to display this multipart content. Even
+ * unknown types are displayable, since they're treated as mixed
+ * per RFC 2046.
*/
- if (!alternate || ct->c_subtype != MULTI_UNKNOWN)
- return show_multi_internal (ct, serial, alternate);
-
- return NOTOK;
+ return show_multi_internal (ct, alternate);
}
*/
static int
-show_multi_internal (CT ct, int serial, int alternate)
+show_multi_internal (CT ct, int alternate)
{
- int alternating, nowalternate, nowserial, result;
+ int alternating, nowalternate, result;
struct multipart *m = (struct multipart *) ct->c_ctparams;
struct part *part;
CT p;
- sigset_t set, oset;
alternating = 0;
nowalternate = alternate;
- if (ct->c_subtype == MULTI_PARALLEL) {
- nowserial = serialsw;
- } else if (ct->c_subtype == MULTI_ALTERNATE) {
+ if (ct->c_subtype == MULTI_ALTERNATE) {
nowalternate = 1;
alternating = 1;
- nowserial = serial;
- } else {
- /*
- * multipart/mixed
- * mutlipart/digest
- * unknown subtypes of multipart (treat as mixed per rfc2046)
- */
- nowserial = serial;
- }
-
- /* block a few signals */
- if (!nowserial) {
- sigemptyset (&set);
- sigaddset (&set, SIGHUP);
- sigaddset (&set, SIGINT);
- sigaddset (&set, SIGQUIT);
- sigaddset (&set, SIGTERM);
- SIGPROCMASK (SIG_BLOCK, &set, &oset);
}
/*
* alternate -> we are a part inside an multipart/alternative
- * alternating -> we are a multipart/alternative
+ * alternating -> we are a multipart/alternative
*/
result = alternate ? NOTOK : OK;
for (part = m->mp_parts; part; part = part->mp_next) {
p = part->mp_part;
- if (part_ok (p, 0) && type_ok (p, 0)) {
+ if (part_ok (p, 1) && type_ok (p, 1)) {
int inneresult;
- inneresult = show_switch (p, nowserial, nowalternate);
+ inneresult = show_switch (p, nowalternate);
switch (inneresult) {
case NOTOK:
if (alternate && !alternating) {
goto out;
}
- if (serial && !nowserial) {
- pid_t pid;
- int kids;
-#ifdef WAITINT
- int status;
-#else
- union wait status;
-#endif
-
- kids = 0;
- for (part = m->mp_parts; part; part = part->mp_next) {
- p = part->mp_part;
-
- if (p->c_pid > OK) {
- if (kill (p->c_pid, 0) == NOTOK)
- p->c_pid = 0;
- else
- kids++;
- }
- }
-
- while (kids > 0 && (pid = wait (&status)) != NOTOK) {
-#ifdef WAITINT
- pidcheck (status);
-#else
- pidcheck (status.w_status);
-#endif
-
- for (part = m->mp_parts; part; part = part->mp_next) {
- p = part->mp_part;
-
- if (xpid == pid)
- xpid = 0;
- if (p->c_pid == pid) {
- p->c_pid = 0;
- kids--;
- break;
- }
- }
- }
- }
-
out:
- if (!nowserial) {
- /* reset the signal mask */
- SIGPROCMASK (SIG_SETMASK, &oset, &set);
- }
-
return result;
}
*/
static int
-show_multi_aux (CT ct, int serial, int alternate, char *cp)
+show_multi_aux (CT ct, int alternate, char *cp)
{
- int len, buflen, quoted;
- int xlist, xpause, xtty;
- char *bp, *pp, *file, buffer[BUFSIZ];
+ /* 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];
struct multipart *m = (struct multipart *) ct->c_ctparams;
struct part *part;
- CI ci = &ct->c_ctinfo;
CT p;
for (part = m->mp_parts; part; part = part->mp_next) {
if ((*p->c_ceopenfnx) (p, &file) == NOTOK)
return NOTOK;
- /* I'm not sure if this is necessary? */
p->c_storage = add (file, NULL);
if (p->c_showproc && !strcmp (p->c_showproc, "true"))
}
}
- xlist = 0;
- xpause = 0;
- xtty = 0;
+ if (parse_display_string (ct, cp, &xstdin, &xlist, file,
+ buffer, sizeof(buffer) - 1, 1)) {
+ admonish (NULL, "Buffer overflow constructing show command!\n");
+ return NOTOK;
+ }
+
+ return show_content_aux2 (ct, alternate, NULL, buffer, NOTOK, xlist, 0);
+}
+
+
+/*
+ * show content of type "message/rfc822"
+ */
+
+static int
+show_message_rfc822 (CT ct, int alternate)
+{
+ 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);
+
+ if ((cp = ct->c_showproc))
+ return show_content_aux (ct, alternate, cp, NULL);
+
+ /* 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);
+ }
+
+ /* complain if we are not a part of a multipart/alternative */
+ if (!alternate)
+ content_error (NULL, ct, "don't know how to display content");
+
+ return NOTOK;
+}
+
+
+/*
+ * Show content of type "message/partial".
+ */
+
+static int
+show_partial (CT ct, int alternate)
+{
+ NMH_UNUSED (alternate);
+
+ content_error (NULL, ct,
+ "in order to display this message, you must reassemble it");
+ return NOTOK;
+}
+
+
+/*
+ * Show content of type "message/external".
+ *
+ * THE ERROR CHECKING IN THIS ONE IS NOT DONE YET.
+ */
+
+static int
+show_external (CT ct, int alternate)
+{
+ struct exbody *e = (struct exbody *) ct->c_ctparams;
+ CT p = e->eb_content;
+
+ if (!type_ok (p, 0))
+ return OK;
+
+ return show_switch (p, alternate);
+}
+
+
+static int
+parse_display_string (CT ct, char *cp, int *xstdin, int *xlist,
+ char *file, char *buffer, size_t buflen,
+ int multipart) {
+ int len, quoted = 0;
+ char *bp = buffer, *pp;
+ CI ci = &ct->c_ctinfo;
- /* get buffer ready to go */
- bp = buffer;
- buflen = sizeof(buffer) - 1;
bp[0] = bp[buflen] = '\0';
- quoted = 0;
- /* Now parse display string */
for ( ; *cp && buflen > 0; cp++) {
if (*cp == '%') {
pp = bp;
+
switch (*++cp) {
case 'a':
/* insert parameters from Content-Type field */
{
- char **ap, **ep;
+ PM pm;
char *s = "";
- for (ap = ci->ci_attrs, ep = ci->ci_values; *ap; ap++, ep++) {
- snprintf (bp, buflen, "%s%s=\"%s\"", s, *ap, *ep);
+ for (pm = ci->ci_first_pm; pm; pm = pm->pm_next) {
+ snprintf (bp, buflen, "%s%s=\"%s\"", s, pm->pm_name,
+ get_param_value(pm, '?'));
len = strlen (bp);
bp += len;
buflen -= len;
break;
case 'e':
- /* exclusive execution */
- xtty = 1;
+ /* no longer implemented */
break;
case 'F':
- /* %e and %f */
- xtty = 1;
+ /* %f, and stdin is terminal not content */
+ *xstdin = 1;
/* and fall... */
case 'f':
- /* insert filename(s) containing content */
- {
- char *s = "";
-
- for (part = m->mp_parts; part; part = part->mp_next) {
- p = part->mp_part;
-
- snprintf (bp, buflen, "%s'%s'", s, p->c_storage);
- len = strlen (bp);
- bp += len;
- buflen -= len;
- s = " ";
+ if (multipart) {
+ /* insert filename(s) containing content */
+ struct multipart *m = (struct multipart *) ct->c_ctparams;
+ struct part *part;
+ char *s = "";
+ CT p;
+
+ for (part = m->mp_parts; part; part = part->mp_next) {
+ p = part->mp_part;
+
+ snprintf (bp, buflen, "%s%s", s, p->c_storage);
+ len = strlen (bp);
+ bp += len;
+ buflen -= len;
+ s = " ";
+ }
+ } else {
+ /* insert filename containing content */
+ snprintf (bp, buflen, "%s", file);
+
+ /*
+ * Old comments below are left here for posterity.
+ * This was/is tricky.
+ */
+ /* since we've quoted the file argument, set things up
+ * to look past it, to avoid problems with the quoting
+ * logic below. (I know, I should figure out what's
+ * broken with the quoting logic, but..)
+ */
+ /*
+ * Here's the email that submitted the patch with
+ * the comment above:
+ * https://www.mail-archive.com/nmh-workers@mhost.com/
+ * msg00288.html
+ * I can't tell from that exactly what was broken,
+ * beyond misquoting of the filename. The profile
+ * had appearances of %F both with and without quotes.
+ * The unquoted ones should have been quoted by the
+ * code below.
+ * The fix was to always quote the filename. But
+ * that broke '%F' because it expanded to ''filename''.
+ */
+ /*
+ * Old comments above are left here for posterity.
+ * The quoting below should work properly now.
+ */
}
- /* set our starting pointer back to bp, to avoid
- * requoting the filenames we just added
- */
- pp = bp;
- }
- break;
+ break;
case 'p':
- /* %l, and pause prior to displaying content */
- xpause = pausesw;
+ /* No longer supported */
/* and fall... */
case 'l':
/* display listing prior to displaying content */
- xlist = !nolist;
+ *xlist = !nolist;
break;
case 's':
/* insert character % */
goto raw;
+ case '{' : {
+ const char *closing_brace = strchr(cp, '}');
+
+ if (closing_brace) {
+ const size_t param_len = closing_brace - cp - 1;
+ char *param = mh_xmalloc(param_len + 1);
+ char *value;
+
+ (void) strncpy(param, cp + 1, param_len);
+ param[param_len] = '\0';
+ value = get_param(ci->ci_first_pm, param, '?', 0);
+ free(param);
+
+ cp += param_len + 1; /* Skip both braces, too. */
+
+ if (value) {
+ /* %{param} is set in the Content-Type header.
+ After the break below, quote it if necessary. */
+ (void) strncpy(bp, value, buflen);
+ free(value);
+ } else {
+ /* %{param} not found, so skip it completely. cp
+ was advanced above. */
+ continue;
+ }
+ } else {
+ /* This will get confused if there are multiple %{}'s,
+ but its real purpose is to avoid doing bad things
+ above if a closing brace wasn't found. */
+ admonish(NULL,
+ "no closing brace for display string escape %s",
+ cp);
+ }
+ break;
+ }
+
default:
*bp++ = *--cp;
*bp = '\0';
len = strlen (bp);
bp += len;
buflen -= len;
+ *bp = '\0';
/* Did we actually insert something? */
if (bp != pp) {
/* Insert single quote if not inside quotes already */
if (!quoted && buflen) {
len = strlen (pp);
- memmove (pp + 1, pp, len);
+ memmove (pp + 1, pp, len+1);
*pp++ = '\'';
buflen--;
bp++;
+ quoted = 1;
}
/* Escape existing quotes */
while ((pp = strchr (pp, '\'')) && buflen > 3) {
len = strlen (pp++);
- memmove (pp + 3, pp, len);
- *pp++ = '\\';
- *pp++ = '\'';
- *pp++ = '\'';
- buflen -= 3;
- bp += 3;
+ if (quoted) {
+ /* Quoted. Let this quote close that quoting.
+ Insert an escaped quote to replace it and
+ another quote to reopen quoting, which will be
+ closed below. */
+ memmove (pp + 2, pp, len);
+ *pp++ = '\\';
+ *pp++ = '\'';
+ buflen -= 2;
+ bp += 2;
+ quoted = 0;
+ } else {
+ /* Not quoted. This should not be reached with
+ the current code, but handle the condition
+ in case the code changes. Just escape the
+ quote. */
+ memmove (pp, pp-1, len+1);
+ *(pp++-1) = '\\';
+ buflen -= 1;
+ bp += 1;
+ }
}
/* If pp is still set, that means we ran out of space. */
if (pp)
buflen = 0;
- if (!quoted && buflen) {
- *bp++ = '\'';
- *bp = '\0';
- buflen--;
+ /* Close quoting. */
+ if (quoted && buflen) {
+ /* See if we need to close the quote by looking
+ for an odd number of unescaped close quotes in
+ the remainder of the display string. */
+ int found_quote = 0, escaped = 0;
+ char *c;
+
+ for (c = cp+1; *c; ++c) {
+ if (*c == '\\') {
+ escaped = ! escaped;
+ } else {
+ if (escaped) {
+ escaped = 0;
+ } else {
+ if (*c == '\'') {
+ found_quote = ! found_quote;
+ }
+ }
+ }
+ }
+ if (! found_quote) {
+ *bp++ = '\'';
+ buflen--;
+ quoted = 0;
+ }
}
}
} else {
raw:
*bp++ = *cp;
- *bp = '\0';
buflen--;
if (*cp == '\'')
quoted = !quoted;
}
+
+ *bp = '\0';
}
- if (buflen <= 0 || (ct->c_termproc && buflen <= strlen(ct->c_termproc))) {
+ if (buflen <= 0 ||
+ (ct->c_termproc && buflen <= strlen(ct->c_termproc))) {
/* content_error would provide a more useful error message
* here, except that if we got overrun, it probably would
* too.
*/
- fprintf(stderr, "Buffer overflow constructing show command!\n");
return NOTOK;
}
char term[BUFSIZ];
strncpy (term, buffer, sizeof(term));
- snprintf (buffer, sizeof(buffer), ct->c_termproc, term);
+ snprintf (buffer, buflen, ct->c_termproc, term);
}
- return show_content_aux2 (ct, serial, alternate, NULL, buffer,
- NOTOK, xlist, xpause, 0, xtty);
+ return OK;
}
-/*
- * show content of type "message/rfc822"
- */
-
-static int
-show_message_rfc822 (CT ct, int serial, int alternate)
-{
- char *cp, buffer[BUFSIZ];
- CI ci = &ct->c_ctinfo;
-
- /* Check for mhn-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, serial, alternate, cp, NULL);
-
- /* Check for mhn-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, serial, alternate, cp, NULL);
-
- if ((cp = ct->c_showproc))
- return show_content_aux (ct, serial, alternate, cp, NULL);
+int
+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) {
+#ifdef HAVE_ICONV
+ iconv_t conv_desc = NULL;
+ char *dest;
+ int fd = -1;
+ char **file = NULL;
+ FILE **fp = NULL;
+ size_t begin;
+ size_t end;
+ int opened_input_file = 0;
+ char src_buffer[BUFSIZ];
+ HF hf;
+ char *tempfile;
+
+ if ((conv_desc = iconv_open (dest_charset, src_charset)) ==
+ (iconv_t) -1) {
+ advise (NULL, "Can't convert %s to %s", src_charset, dest_charset);
+ return NOTOK;
+ }
+
+ if ((tempfile = m_mktemp2 (NULL, invo_name, &fd, NULL)) == NULL) {
+ adios (NULL, "unable to create temporary file in %s",
+ get_temp_dir());
+ }
+ dest = add (tempfile, NULL);
+
+ if (ct->c_cefile.ce_file) {
+ file = &ct->c_cefile.ce_file;
+ fp = &ct->c_cefile.ce_fp;
+ begin = end = 0;
+ } else if (ct->c_file) {
+ file = &ct->c_file;
+ fp = &ct->c_fp;
+ begin = (size_t) ct->c_begin;
+ end = (size_t) ct->c_end;
+ } /* else no input file: shouldn't happen */
+
+ if (file && *file && fp) {
+ if (! *fp) {
+ if ((*fp = fopen (*file, "r")) == NULL) {
+ advise (*file, "unable to open for reading");
+ status = NOTOK;
+ } else {
+ opened_input_file = 1;
+ }
+ }
+ }
+
+ if (fp && *fp) {
+ size_t inbytes;
+ size_t bytes_to_read =
+ end > 0 && end > begin ? end - begin : sizeof src_buffer;
+
+ fseeko (*fp, begin, SEEK_SET);
+ 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_before = outbytes;
+
+ if (end > 0) bytes_to_read -= inbytes;
+
+ if (iconv (conv_desc, &ib, &inbytes, &ob, &outbytes) ==
+ (size_t) -1) {
+ status = NOTOK;
+ break;
+ } else {
+ write (fd, dest_buffer, outbytes_before - outbytes);
+ }
+ }
+
+ if (opened_input_file) {
+ fclose (*fp);
+ *fp = NULL;
+ }
+ }
+
+ iconv_close (conv_desc);
+ close (fd);
+
+ if (status == OK) {
+ /* Replace the decoded file with the converted one. */
+ if (ct->c_cefile.ce_file) {
+ if (ct->c_cefile.ce_unlink) {
+ (void) m_unlink (ct->c_cefile.ce_file);
+ }
+ free (ct->c_cefile.ce_file);
+ }
+ ct->c_cefile.ce_file = dest;
+ ct->c_cefile.ce_unlink = 1;
+
+ ++*message_mods;
+
+ /* Update ct->c_ctline. */
+ if (ct->c_ctline) {
+ char *ctline = concat(" ", ct->c_ctinfo.ci_type, "/",
+ ct->c_ctinfo.ci_subtype, NULL);
+ char *outline;
+
+ replace_param(&ct->c_ctinfo.ci_first_pm,
+ &ct->c_ctinfo.ci_last_pm, "charset",
+ dest_charset, 0);
+ outline = output_params(strlen(TYPE_FIELD) + 1 + strlen(ctline),
+ ct->c_ctinfo.ci_first_pm, NULL, 0);
+ if (outline) {
+ ctline = add(outline, ctline);
+ free(outline);
+ }
- /* default method for message/rfc822 */
- if (ct->c_subtype == MESSAGE_RFC822) {
- cp = (ct->c_showproc = add ("%pshow -file '%F'", NULL));
- return show_content_aux (ct, serial, alternate, cp, NULL);
+ free (ct->c_ctline);
+ ct->c_ctline = ctline;
+ } /* else no CT line, which is odd */
+
+ /* Update Content-Type header field. */
+ for (hf = ct->c_first_hf; hf; hf = hf->next) {
+ if (! strcasecmp (TYPE_FIELD, hf->name)) {
+ char *ctline = concat (ct->c_ctline, "\n", NULL);
+
+ free (hf->value);
+ hf->value = ctline;
+ break;
+ }
+ }
+ } else {
+ (void) m_unlink (dest);
+ }
+#else /* ! HAVE_ICONV */
+ NMH_UNUSED (message_mods);
+
+ advise (NULL, "Can't convert %s to %s without iconv", src_charset,
+ dest_charset);
+ status = NOTOK;
+#endif /* ! HAVE_ICONV */
}
- /* complain if we are not a part of a multipart/alternative */
- if (!alternate)
- content_error (NULL, ct, "don't know how to display content");
-
- return NOTOK;
+ return status;
}
-/*
- * Show content of type "message/partial".
- */
-
static int
-show_partial (CT ct, int serial, int alternate)
-{
- content_error (NULL, ct,
- "in order to display this message, you must reassemble it");
- return NOTOK;
-}
+convert_content_charset (CT ct, char **file) {
+#ifdef HAVE_ICONV
+ /* Using current locale, see if the content needs to be converted. */
+ /* content_charset() cannot return NULL. */
+ char *charset = content_charset (ct);
-/*
- * Show content of type "message/external".
- *
- * THE ERROR CHECKING IN THIS ONE IS NOT DONE YET.
- */
-
-static int
-show_external (CT ct, int serial, int alternate)
-{
- struct exbody *e = (struct exbody *) ct->c_ctparams;
- CT p = e->eb_content;
+ if (! check_charset (charset, strlen (charset))) {
+ int unused = 0;
- if (!type_ok (p, 0))
- return OK;
-
- return show_switch (p, serial, alternate);
+ if (convert_charset (ct, get_charset (), &unused) == 0) {
+ *file = ct->c_cefile.ce_file;
+ } else {
+ return NOTOK;
+ }
+ }
+#else /* ! HAVE_ICONV */
+ NMH_UNUSED (ct);
+ NMH_UNUSED (file);
+#endif /* ! HAVE_ICONV */
-#if 0
- content_error (NULL, p, "don't know how to display content");
- return NOTOK;
-#endif
+ return OK;
}
+/*
+ * Exit if the display process returned with a nonzero exit code, or terminated
+ * with a SIGQUIT signal.
+ */
-static RETSIGTYPE
-intrser (int i)
+static int
+pidcheck (int status)
{
-#ifndef RELIABLE_SIGNALS
- SIGNAL (SIGINT, intrser);
-#endif
+ if ((status & 0xff00) == 0xff00 || (status & 0x007f) != SIGQUIT)
+ return status;
- putchar ('\n');
- siglongjmp (intrenv, DONE);
+ fflush (stdout);
+ fflush (stderr);
+ done (1);
+ return 1;
}
projects / nmh / blobdiff