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doc-email.c
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doc-email.c
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/*
* Copyright Neil Brown ©2016-2023 <neil@brown.name>
* May be distributed under terms of GPLv2 - see file:COPYING
*
* doc-email: Present an email message as its intended content, with
* part recognition and decoding etc.
*
* A multipart document is created from sets of three documents.
* In each set:
* - The first is the original email, overlayed with 'crop' to select
* one section, then overlayed with handlers for the transfer-encoding
* and (optionally) charset. There will be one for the headers
* and either one for the body, or one for each part of the body
* is multipart. All nested multiparts have their parts linearized.
* - The second is a scratch text document which can contain a transformed
* copy of the content when the tranformation is too complex for an
* overlay layer. This includes HTML and PDF which can be converted
* to text, but the conversion is complex, and the headers, which need to be
* re-ordered as well as filtered and decoded. For images, this document has
* trivial content but specifier a rendering function that displays the image.
* - The final section is a 'spacer' which has fixed content and displays
* as a summary line for the part (e.g. MIME-type, file name) and
* provides active buttons for acting on the content (save, external viewer
* etc).
*
* The middle part has attributes set on the document which can be
* accessed from the spacer using "multipart-prev:"
* - email:path identify the part in the nexted multipart struture
* e.g. "header", "body", "body,multipart/mixed:0,mulitpart/alternate:1"
* - email:actions a ':' separated list of buttons. "hide:save:view"
* - email:content-type the MIME type of the content. "image/png"
*
*/
#define _GNU_SOURCE /* for asprintf */
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <wctype.h>
#include <ctype.h>
#include <stdio.h>
#define PANE_DATA_TYPE struct email_view
#define DOC_NEXT email_next
#define DOC_PREV email_prev
#include "core.h"
#include "misc.h"
struct email_view {
int parts;
char *invis;
};
#include "core-pane.h"
static inline bool is_orig(int p)
{
return p >= 0 && p % 3 == 0;
}
static inline bool is_transformed(int p)
{
return p >= 0 && p % 3 == 1;
}
static inline bool is_spacer(int p)
{
return p >= 0 && p % 3 == 2;
}
static inline int to_orig(int p)
{
if (p < 0)
return p;
return p - p % 3;
}
static bool handle_content(struct pane *p safe,
char *type, char *xfer, char *disp,
struct mark *start safe, struct mark *end safe,
struct pane *mp safe, struct pane *spacer safe,
char *path safe);
static bool handle_rfc822(struct pane *email safe,
struct mark *start safe, struct mark *end safe,
struct pane *mp safe, struct pane *spacer safe,
char *path safe);
static bool cond_append(struct buf *b safe, char *txt safe, char *tag safe,
int offset, int *pos safe)
{
char *tagf = "action-activate:email-";
int prelen = 1 + strlen(tagf) + strlen(tag) + 1 + 1;
int postlen = 1 + 3;
int len = prelen + strlen(txt) + postlen;
if (offset >= 0 && offset <= b->len + len)
return False;
buf_concat(b, "<");
buf_concat(b, tagf);
buf_concat(b, tag);
buf_concat(b, ">[");
*pos = b->len;
buf_concat(b, txt);
buf_concat(b, "]</>");
return True;
}
static bool is_attr(char *a safe, char *attrs safe)
{
int l = strlen(a);
if (strncmp(a, attrs, l) != 0)
return False;
if (attrs[l] == ':' || attrs[l] == '\0')
return True;
return False;
}
DEF_CMD(email_spacer)
{
struct buf b;
int visible = 1;
int orig = 0;
int extras = 0;
struct mark *m = ci->mark;
struct mark *pm = ci->mark2;
int o = ci->num;
int cp = -1;
int ret_pos = 0;
char *attr;
int ret;
bool ok = True;
if (!m)
return Enoarg;
if (pm) {
/* Count the number of chars before the cursor.
* This tells us which button to highlight.
*/
cp = 0;
pm = mark_dup(pm);
while (!mark_ordered_or_same(pm, m)) {
doc_prev(ci->focus, pm);
cp += 1;
}
mark_free(pm);
}
buf_init(&b);
buf_concat(&b, "<fg:red>");
attr = pane_mark_attr(ci->home, m, "multipart-prev:email:path");
if (attr) {
buf_concat(&b, attr);
buf_concat(&b, " ");
}
attr = pane_mark_attr(ci->focus, m, "email:visible");
if (attr && strcmp(attr, "none") == 0)
visible = 0;
if (attr && strcmp(attr, "orig") == 0)
orig = 1;
attr = attr_find(ci->home->attrs, "email:extra-headers");
extras = attr && *attr;
attr = pane_mark_attr(ci->home, m, "multipart-prev:email:actions");
if (!attr)
attr = "hide";
while (ok && attr && *attr) {
int pos = 0;
char *a = strchr(attr, ':');
if (a)
*a = 0;
if (is_attr("hide", attr))
ok = cond_append(&b, visible ? "HIDE" : "SHOW", attr,
o, &pos);
else if (is_attr("full", attr))
ok = cond_append(&b, orig ? "BRIEF" : "FULL", attr,
o, &pos);
else if (is_attr("extras", attr))
ok = cond_append(&b, extras ? "-" : "EXTRAS", attr,
o, &pos);
else
ok = cond_append(&b, attr, attr, o, &pos);
if (ok)
doc_next(ci->focus, m);
if (cp >= 0) {
cp -= 1;
ret_pos = pos;
}
attr = a;
if (attr)
*attr++ = ':';
}
/* end of line, only display if we haven't reached
* the cursor or offset
*
* if cp < 0, we aren't looking for a cursor, so don't stop.
* if cp > 0, we haven't reached cursor yet, so don't stop
* if cp == 0, this is cursor pos, so stop.
*/
if (ok && o < 0) {
wint_t wch;
buf_concat(&b, "</>");
attr = pane_mark_attr(ci->focus, m,
"multipart-prev:email:content-type");
if (attr) {
buf_concat(&b, " ");
buf_concat(&b, attr);
}
attr = pane_mark_attr(ci->focus, m,
"multipart-prev:email:charset");
if (attr) {
buf_concat(&b, " ");
buf_concat(&b, attr);
}
attr = pane_mark_attr(ci->focus, m,
"multipart-prev:email:filename");
if (attr) {
buf_concat(&b, " file=");
buf_concat(&b, attr);
}
if (cp >= 0)
ret_pos = b.len;
buf_concat(&b, "\n");
if (cp >= 1)
ret_pos = b.len;
while ((wch = doc_next(ci->focus, m)) &&
wch != '\n' && wch != WEOF)
;
}
ret = comm_call(ci->comm2, "callback:render", ci->focus, ret_pos, NULL,
buf_final(&b));
free(b.b);
return ret;
}
static int get_part(struct pane *p safe, struct mark *m safe)
{
char *a = pane_mark_attr(p, m, "multipart:part-num");
if (!a)
return Efail;
return atoi(a);
}
DEF_CMD(email_image)
{
char *c = NULL;
int p;
int ret;
int retlen = 0;
int i;
struct xy scale;
struct mark *point = ci->mark2;
int max_chars = ci->num;
int map_start;
if (!ci->mark)
return Enoarg;
p = get_part(ci->home, ci->mark);
scale = pane_scale(ci->focus);
if (scale.x < 1)
scale.x = 1;
asprintf(&c, "<image:comm:doc:multipart-%d-doc:get-bytes,width:%d,height:%d,noupscale,map:RccRccRcc>\n",
to_orig(p),
ci->focus->w * 1000 / scale.x,
ci->focus->h * 750 / scale.x);
if (!c)
return Efail;
map_start = strlen(c) - 2 - 9;
if (max_chars >= 0 && max_chars < (int)strlen(c))
c[max_chars] = '\0';
for (i = 0; i < 9 ; i++) {
if (point && mark_ordered_or_same(point, ci->mark))
retlen = map_start + i;
if (max_chars >= 0 && map_start + i >= max_chars)
break;
doc_next(ci->focus, ci->mark);
}
ret = comm_call(ci->comm2, "callback:render", ci->focus,
retlen, NULL, c);
free(c);
return ret;
}
DEF_CMD(email_select_hide)
{
int vis = 1;
char *a;
struct mark *m = ci->mark;
if (!m)
return Enoarg;
a = pane_mark_attr(ci->focus, m, "email:visible");
if (a && strcmp(a, "none") == 0)
vis = 0;
call("doc:set-attr", ci->focus, 1, m, "email:visible", 0, NULL,
vis ? "none" : "preferred");
return 1;
}
DEF_CMD(email_select_full)
{
int want_orig = 1;
char *a;
struct mark *m = ci->mark;
if (!m)
return Enoarg;
a = pane_mark_attr(ci->focus, m, "email:visible");
if (a && strcmp(a, "orig") == 0)
want_orig = 0;
call("doc:set-attr", ci->focus, 1, m, "email:visible", 0, NULL,
want_orig ? "orig" : "transformed");
return 1;
}
DEF_CMD(email_select_extras)
{
char *a = attr_find(ci->home->attrs, "email:extra-headers");
struct mark *m = ci->mark;
struct mark *point;
struct pane *hdrdoc, *headers;
if (!m)
return Enoarg;
if (a && *a)
return 1;
headers = call_ret(pane, "doc:multipart:get-part", ci->focus, 0);
hdrdoc = call_ret(pane, "doc:multipart:get-part", ci->focus, 1);
if (!headers || !hdrdoc)
return Einval;
point = point_new(hdrdoc);
if (point) {
char *file;
call("doc:set-ref", hdrdoc, 0, point);
home_call(headers, "get-header", hdrdoc, 0, point, "Message-ID", 1);
home_call(headers, "get-header", hdrdoc, 0, point, "In-Reply-To", 1);
home_call(headers, "get-header", hdrdoc, 0, point, "References", 1, NULL, "list");
file = pane_attr_get(headers, "filename");
if (file) {
call("doc:replace", hdrdoc, 1, point, "Filename: ",
0, point, ",render:rfc822header=9");
call("doc:replace", hdrdoc, 1, point, file, 0, point);
call("doc:replace", hdrdoc, 1, point, "\n", 0, point);
}
}
mark_free(point);
attr_set_str(&ci->home->attrs, "email:extra-headers", "done");
call("doc:set-attr", ci->focus, 1, m, "email:visible", 0, NULL,
"transformed");
return 1;
}
static struct map *email_view_map safe;
DEF_LOOKUP_CMD(email_view_handle, email_view_map);
static const char tspecials[] = "()<>@,;:\\\"/[]?=";
static int lws(char c) {
return c == ' ' || c == '\t' || c == '\r' || c == '\n';
}
static char *get_822_token(char **hdrp safe, int *len safe)
{
/* A "token" is one of:
* - Quoted string ""
* - single char from tspecials (except '(' or '"')
* - string of non-LWS, and non-tspecials
*
* (comments) are skipped.
* Start is returned, hdrp is moved, len is reported.
*/
char *hdr = *hdrp;
char *start;
*len = 0;
if (!hdr)
return NULL;
while (1) {
while (lws(*hdr))
hdr++;
if (*hdr == '(') {
while (*hdr && *hdr != ')')
hdr++;
continue;
}
if (*hdr == '"') {
start = ++hdr;
while (*hdr && *hdr != '"')
hdr++;
*len = hdr - start;
hdr++;
*hdrp = hdr;
return start;
}
if (!*hdr) {
*hdrp = NULL;
return NULL;
}
if (strchr(tspecials, *hdr)) {
start = hdr;
hdr++;
*len = 1;
*hdrp = hdr;
return start;
}
start = hdr;
while (*hdr && !lws(*hdr) && !strchr(tspecials, *hdr))
hdr++;
*len = hdr - start;
*hdrp = hdr;
return start;
}
}
static char *get_822_attr(char *shdr safe, char *attr safe)
{
/* If 'hdr' contains "$attr=...", return "..."
* with "quotes" stripped. Return value can be used
* until the next call, when it will be free.
*/
int len, alen;
char *hdr = shdr;
char *h;
static char *last = NULL;
free(last);
last = NULL;
alen = strlen(attr);
while (hdr) {
while ((h = get_822_token(&hdr, &len)) != NULL &&
(len != alen || strncasecmp(h, attr, alen) != 0))
;
h = get_822_token(&hdr, &len);
if (!h || len != 1 || *h != '=')
continue;
h = get_822_token(&hdr, &len);
if (!h)
continue;
last = strndup(h, len);
return last;
}
return NULL;
}
static char *get_822_word(char *hdr safe)
{
/* Get the first word from header, in static
* space (freed on next call)
*/
static char *last = NULL;
int len;
char *h;
free(last);
last = NULL;
h = get_822_token(&hdr, &len);
if (!h)
return h;
last = strndup(h, len);
return last;
}
static bool tok_matches(char *tok, int len, char *match safe)
{
if (!tok)
return False;
if (len != (int)strlen(match))
return False;
return strncasecmp(tok, match, len) == 0;
}
static bool handle_text(struct pane *p safe, char *type, char *xfer, char *disp,
struct mark *start safe, struct mark *end safe,
struct pane *mp safe, struct pane *spacer safe,
char *path)
{
struct pane *h, *transformed = NULL;
int need_charset = 0;
char *charset = NULL;
char *major, *minor = NULL;
int majlen, minlen;
char *ctype = NULL;
char *fname = NULL;
h = call_ret(pane, "attach-crop", p, 0, start, NULL, 0, end);
if (!h)
return False;
if (xfer) {
int xlen;
xfer = get_822_token(&xfer, &xlen);
if (xfer && xlen == 16 &&
strncasecmp(xfer, "quoted-printable", 16) == 0) {
struct pane *hx = call_ret(pane,
"attach-quoted_printable",
h);
if (hx) {
h = hx;
need_charset = 1;
}
}
if (xfer && xlen == 6 &&
strncasecmp(xfer, "base64", 6) == 0) {
struct pane *hx = call_ret(pane, "attach-base64", h);
if (hx) {
h = hx;
need_charset = 1;
}
}
if (xfer && xlen == 4 &&
strncasecmp(xfer, "8bit", 6) == 0)
need_charset = 2; // only if not utf-8
}
if (type)
charset = get_822_attr(type, "charset");
if (need_charset && !charset && strncasecmp(type, "text/", 5) == 0)
/* We really do need a charset, as the doc might
* only provide bytes, not chars.
*/
charset = "utf-8";
if (type && need_charset && charset != NULL &&
!(need_charset == 2 && strcasecmp(charset, "utf-8") == 0)) {
char *c = NULL, *cp;
struct pane *hx = NULL;
charset = strsave(h, charset);
asprintf(&c, "attach-charset-%s", charset);
for (cp = c; cp && *cp; cp++)
if (isupper(*cp))
*cp = tolower(*cp);
if (c)
hx = call_ret(pane, c, h);
free(c);
if (!hx)
/* windows-1251 is safer than utf-8 as the latter
* rejects some byte sequences, and iso-8859-* has
* lots of control characters.
*/
hx = call_ret(pane, "attach-charset-windows-1251", h);
if (hx)
h = hx;
} else
charset = NULL;
if (type && (fname = get_822_attr(type, "name")))
fname = strsave(h, fname);
if (disp && !fname &&
(fname = get_822_attr(disp, "filename")))
fname = strsave(h, fname);
major = get_822_token(&type, &majlen);
if (major) {
minor = get_822_token(&type, &minlen);
if (minor && tok_matches(minor, minlen, "/"))
minor = get_822_token(&type, &minlen);
else
minor = NULL;
}
if (minor)
asprintf(&ctype, "%1.*s/%1.*s", majlen, major, minlen, minor);
else
asprintf(&ctype, "%1.*s", majlen, major);
if (ctype && strcasecmp(ctype, "text/html") == 0) {
transformed = call_ret(pane, "html-to-text-w3m", h, 1);
if (!transformed)
transformed = call_ret(pane, "html-to-text", h, 1);
}
if (ctype && strcasecmp(ctype, "text/calendar") == 0)
transformed = call_ret(pane, "ical-to-text", h, 1);
if (ctype && strcasecmp(ctype, "application/pdf") == 0)
transformed = call_ret(pane, "pdf-to-text", h, 1);
if (ctype && strcasecmp(ctype, "application/octet-stream") == 0 &&
fname && strcasestr(fname, ".pdf") != NULL)
transformed = call_ret(pane, "pdf-to-text", h, 1);
if (major && strncasecmp(major, "application", majlen) == 0 &&
fname && (strcasestr(fname, ".docx") != NULL ||
strcasestr(fname, ".doc") != NULL ||
strcasestr(fname, ".odt") != NULL))
transformed = call_ret(pane, "doc-to-text", h, 1, NULL, fname);
if (ctype && strncasecmp(ctype, "image/", 6) == 0) {
struct mark *m;
transformed = call_ret(pane, "doc:from-text", h,
0, NULL, NULL, 0, NULL,
"");
if (transformed) {
m = mark_new(transformed);
call("doc:set-ref", transformed, 1, m);
call("doc:replace", transformed, 1, m, "01",
0, m, ",markup:func=doc:email:render-image");
call("doc:replace", transformed, 1, m, "\n01",
0, m, ",markup:not_eol=1");
call("doc:replace", transformed, 1, m, "\n01\n",
0, m, ",markup:not_eol=1");
mark_free(m);
}
}
if (transformed) {
attr_set_str(&transformed->attrs, "email:is_transformed", "yes");
attr_set_str(&transformed->attrs, "email:preferred", "transformed");
} else {
transformed = call_ret(pane, "doc:from-text", h,
0, NULL, NULL, 0, NULL, "\n");
if (transformed)
attr_set_str(&transformed->attrs, "email:preferred",
"orig");
}
if (!transformed) {
pane_close(h);
return False;
}
call("doc:set:autoclose", transformed, 1);
if (ctype) {
int i;
for (i = 0; ctype[i]; i++)
if (isupper(ctype[i]))
ctype[i] = tolower(ctype[i]);
attr_set_str(&transformed->attrs, "email:content-type", ctype);
free(ctype);
} else
attr_set_str(&h->attrs, "email:content-type", "text/plain");
attr_set_str(&transformed->attrs, "email:actions", "hide:save");
attr_set_str(&transformed->attrs, "email:path", path);
attr_set_str(&transformed->attrs, "email:which", "transformed");
if (charset)
attr_set_str(&transformed->attrs, "email:charset", charset);
if (fname)
attr_set_str(&transformed->attrs, "email:filename", fname);
if (disp)
attr_set_str(&transformed->attrs,
"email:content-disposition", disp);
attr_set_str(&h->attrs, "email:which", "orig");
home_call(mp, "multipart-add", h);
home_call(mp, "multipart-add", transformed);
home_call(mp, "multipart-add", spacer);
return True;
}
/* Find a multipart boundary between start and end, moving
* 'start' to after the boundary, and 'pos' to just before it.
* Return 0 if a non-terminal boundary is found
* Return 1 if a terminal boundary is found (trailing --)
* Return -1 if nothing is found.
*/
#define is_lws(c) ({int _c2 = c; _c2 == ' ' || _c2 == '\t' || is_eol(_c2); })
static int find_boundary(struct pane *p safe,
struct mark *start safe, struct mark *end safe,
struct mark *pos,
char *boundary safe)
{
char *patn = NULL;
int ret;
int len = strlen(boundary);
asprintf(&patn, "^--(?%d:%s)(--)?[ \\t\\r]*$", len, boundary);
ret = call("text-search", p, 0, start, patn, 0, end);
if (ret <= 0)
return -1;
ret -= 1;
if (pos) {
int cnt = ret;
mark_to_mark(pos, start);
while (cnt > 0 && doc_prev(p, pos) != WEOF)
cnt -= 1;
/* Previous char is CRLF, and must be swallowed */
if (doc_prior(p, pos) == '\n')
doc_prev(p, pos);
if (doc_prior(p, pos) == '\r')
doc_prev(p, pos);
}
while (is_lws(doc_prior(p, start))) {
len -= 1;
doc_prev(p, start);
}
while (is_lws(doc_following(p, start)))
doc_next(p, start);
if (ret == 2 + len)
return 0;
if (ret == 2 + len + 2)
return 1;
return -1;
}
static bool handle_multipart(struct pane *p safe, char *type safe,
struct mark *start safe, struct mark *end safe,
struct pane *mp safe, struct pane *spacer safe,
char *path safe)
{
char *boundary = get_822_attr(type, "boundary");
int found_end = 0;
struct mark *pos, *part_end;
char *tok;
int len;
int partnum = 0;
char *newpath;
if (!boundary)
/* FIXME need a way to say "just display the text" */
return True;
found_end = find_boundary(p, start, end, NULL, boundary);
if (found_end != 0)
return True;
tok = get_822_token(&type, &len);
if (tok) {
tok = get_822_token(&type, &len);
if (tok && tok[0] == '/')
tok = get_822_token(&type, &len);
}
boundary = strdup(boundary);
pos = mark_dup(start);
part_end = mark_dup(pos);
while (found_end == 0 &&
(found_end = find_boundary(p, pos, end, part_end,
boundary)) >= 0) {
struct pane *hdr = call_ret(pane, "attach-rfc822header", p,
0, start, NULL,
0, part_end);
char *ptype, *pxfer, *pdisp;
if (!hdr)
break;
call("get-header", hdr, 0, NULL, "content-type",
0, NULL, "cmd");
call("get-header", hdr, 0, NULL, "content-transfer-encoding",
0, NULL, "cmd");
call("get-header", hdr, 0, NULL, "content-disposition",
0, NULL, "cmd");
ptype = attr_find(hdr->attrs, "rfc822-content-type");
pxfer = attr_find(hdr->attrs,
"rfc822-content-transfer-encoding");
pdisp = attr_find(hdr->attrs,
"rfc822-content-disposition");
pane_close(hdr);
newpath = NULL;
asprintf(&newpath, "%s%s%1.*s:%d", path, path[0] ? ",":"",
len, tok, partnum);
partnum++;
if (part_end->seq < start->seq)
mark_to_mark(part_end, start);
handle_content(p, ptype, pxfer, pdisp, start, part_end, mp,
spacer, newpath ?:"");
free(newpath);
mark_to_mark(start, pos);
}
mark_to_mark(start, pos);
mark_free(pos);
mark_free(part_end);
free(boundary);
return True;
}
static bool handle_content(struct pane *p safe,
char *type, char *xfer, char *disp,
struct mark *start safe, struct mark *end safe,
struct pane *mp safe, struct pane *spacer safe,
char *path safe)
{
char *hdr;
char *major, *minor = NULL;
int mjlen, mnlen;
if (mark_ordered_or_same(end, start))
return True;
if (!type)
type = "text/plain";
hdr = type;
major = get_822_token(&hdr, &mjlen);
if (major) {
minor = get_822_token(&hdr, &mnlen);
if (minor && minor[0] == '/')
minor = get_822_token(&hdr, &mnlen);
}
if (tok_matches(major, mjlen, "multipart"))
return handle_multipart(p, type, start, end, mp, spacer, path);
if (tok_matches(major, mjlen, "message") && tok_matches(minor, mnlen, "rfc822"))
return handle_rfc822(p, start, end, mp, spacer, path);
if (tok_matches(major, mjlen, "text") && tok_matches(minor, mnlen, "rfc822-headers"))
return handle_rfc822(p, start, end, mp, spacer, path);
if (major == NULL ||
tok_matches(major, mjlen, "text"))
return handle_text(p, type, xfer, disp, start, end,
mp, spacer, path);
/* default to plain text until we get a better default */
return handle_text(p, type, xfer, disp, start, end, mp, spacer, path);
}
static bool handle_rfc822(struct pane *email safe,
struct mark *start safe, struct mark *end safe,
struct pane *mp safe, struct pane *spacer safe,
char *path safe)
{
struct pane *h2, *h3;
struct pane *hdrdoc = NULL;
struct mark *point = NULL;
struct mark *hdr_start;
char *xfer = NULL, *type = NULL, *disp = NULL;
char *mime;
char *newpath = NULL;
hdr_start = mark_dup(start);
h2 = call_ret(pane, "attach-rfc822header", email, 0, start, NULL, 0, end);
if (!h2)
goto out;
attr_set_str(&h2->attrs, "email:which", "orig");
hdrdoc = call_ret(pane, "doc:from-text", email, 0, NULL, NULL, 0, NULL, "");
if (!hdrdoc)
goto out;
call("doc:set:autoclose", hdrdoc, 1);
point = point_new(hdrdoc);
if (!point)
goto out;
/* copy some headers to the header temp document */
home_call(h2, "get-header", hdrdoc, 0, point, "From", 1, NULL, "list");
home_call(h2, "get-header", hdrdoc, 0, point, "Date", 1);
home_call(h2, "get-header", hdrdoc, 0, point, "Subject", 1, NULL, "text");
home_call(h2, "get-header", hdrdoc, 0, point, "To", 1, NULL, "list");
home_call(h2, "get-header", hdrdoc, 0, point, "Cc", 1, NULL, "list");
home_call(h2, "get-header", hdrdoc, 0, point, "Reply-To", 1, NULL, "list");
/* copy some headers into attributes for later analysis */
call("get-header", h2, 0, NULL, "MIME-Version", 0, NULL, "cmd");
call("get-header", h2, 0, NULL, "content-type", 0, NULL, "cmd");
call("get-header", h2, 0, NULL, "content-transfer-encoding",
0, NULL, "cmd");
call("get-header", h2, 0, NULL, "content-disposition",
0, NULL, "cmd");
mime = attr_find(h2->attrs, "rfc822-mime-version");
if (mime)
mime = get_822_word(mime);
/* Some email doesn't contain MIME-Type, but is still mime... */
if (!mime || strcmp(mime, "1.0") == 0) {
type = attr_find(h2->attrs, "rfc822-content-type");
xfer = attr_find(h2->attrs, "rfc822-content-transfer-encoding");
disp = attr_find(h2->attrs, "rfc822-content-disposition");
}
newpath = NULL;
asprintf(&newpath, "%s%sheaders", path, path[0] ? ",":"");
attr_set_str(&hdrdoc->attrs, "email:actions", "hide:extras:full");
attr_set_str(&hdrdoc->attrs, "email:which", "transformed");
attr_set_str(&hdrdoc->attrs, "email:content-type", "text/rfc822-headers");
attr_set_str(&hdrdoc->attrs, "email:path", newpath);
attr_set_str(&hdrdoc->attrs, "email:is_transformed", "yes");
h3 = call_ret(pane, "attach-crop", h2, 0, hdr_start, NULL, 0, start);
if (!h3)
h3 = h2;
home_call(mp, "multipart-add", h3);
home_call(mp, "multipart-add", hdrdoc);
home_call(mp, "multipart-add", spacer);
free(newpath);
newpath = NULL;
asprintf(&newpath, "%s%sbody", path, path[0] ? ",":"");
if (!handle_content(email, type, xfer, disp, start, end,
mp, spacer, newpath?:""))
goto out;
free(newpath);
return True;
out:
free(newpath);
if (h2)
pane_close(h2);
if (point)
mark_free(point);
if (hdrdoc)
pane_close(hdrdoc);
return False;
}
DEF_CMD(open_email)
{
int fd;
struct pane *email = NULL;
struct pane *spacer = NULL;
struct mark *start, *end;
struct pane *p;
struct mark *point;
if (ci->str == NULL || !strstarts(ci->str, "email:"))
return Efallthrough;
fd = open(ci->str+6, O_RDONLY);
if (fd < 0)
return Efallthrough;
p = call_ret(pane, "doc:open", ci->focus, fd, NULL, ci->str + 6, 1);
close(fd);
if (!p)
return Efallthrough;
start = mark_new(p);
if (!start) {
pane_close(p);
return Efallthrough;
}
end = mark_dup(start);
call("doc:set-ref", p, 0, end);
call("doc:set:autoclose", p, 1);
email = p;
/* create spacer doc to be attached between each part */
p = call_ret(pane, "doc:from-text", p, 0, NULL, NULL, 0, NULL,
"0123456789\n");
if (!p)
goto out;
attr_set_str(&p->attrs, "email:which", "spacer");
call("doc:set:autoclose", p, 1);
spacer = p;
point = point_new(p);
call("doc:set-ref", p, 1, point);
call("doc:set-attr", p, 1, point, "markup:func", 0,
NULL, "doc:email:render-spacer");
mark_free(point);
/* Create the multipart in which all the parts are assembled. */
p = call_ret(pane, "attach-doc-multipart", ci->home);
if (!p)
goto out;
call("doc:set:autoclose", p, 1);
attr_set_str(&p->attrs, "render-default", "text");
attr_set_str(&p->attrs, "filename", ci->str+6);
attr_set_str(&p->attrs, "doc-type", "email");
if (!handle_rfc822(email, start, end, p, spacer, ""))
goto out;
mark_free(start);
mark_free(end);
return comm_call(ci->comm2, "callback:attach", p);
out:
mark_free(start);
mark_free(end);
if (spacer)
pane_close(spacer);
pane_close(email);
return Efail;
}
DEF_CMD_CLOSED(email_view_close)
{
struct email_view *evi = ci->home->data;
free(evi->invis);
evi->invis = NULL;
return 1;
}
static int count_buttons(struct pane *p safe, struct mark *m safe)
{
int cnt = 0;
char *attr = pane_mark_attr(p, m, "multipart-prev:email:actions");
if (!attr)
attr = "hide";
while (attr) {
cnt += 1;
attr = strchr(attr, ':');
if (attr)
attr++;
}
return cnt;
}
static inline wint_t email_next(struct pane *p safe, struct mark *m safe,
struct doc_ref *r safe, bool bytes)
{
struct email_view *evi = p->data;
bool move = r == &m->ref;
wint_t ret;
int n = -1;
ret = home_call(p->parent, "doc:char", p,
move ? 1 : 0,
m, evi->invis,
move ? 0 : 1);
n = get_part(p->parent, m);
if (move && is_spacer(n)) {
/* Moving in a spacer. IF after valid buttons,
* move to end.