/*
* Copyright notice from original mutt:
* Copyright (C) 1996-9 Brandon Long <blong@fiction.net>
* Copyright (C) 1999-2002 Brendan Cully <brendan@kublai.com>
*
* This file is part of mutt-ng, see http://www.muttng.org/.
* It's licensed under the GNU General Public License,
* please see the file GPL in the top level source directory.
*/
/* message parsing/updating functions */
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include <ctype.h>
#include "mutt.h"
#include "ascii.h"
#include "buffer.h"
#include "mutt_curses.h"
#include "imap_private.h"
#include "message.h"
#include "mx.h"
#include "hcache.h"
#ifdef HAVE_PGP
#include "pgp.h"
#endif
#include "lib/mem.h"
#include "lib/intl.h"
#include "lib/str.h"
#include "lib/debug.h"
#if HAVE_STDINT_H
#include <stdint.h>
#elif HAVE_INTTYPES_H
#include <inttypes.h>
#endif
static void flush_buffer (char *buf, size_t * len, CONNECTION * conn);
static int msg_fetch_header (CONTEXT * ctx, IMAP_HEADER * h, char *buf,
FILE * fp);
static int msg_has_flag (LIST * flag_list, const char *flag);
static int msg_parse_fetch (IMAP_HEADER * h, char *s);
static char *msg_parse_flags (IMAP_HEADER * h, char *s);
#if USE_HCACHE
static int msg_fetch_header_fetch (CONTEXT * ctx, IMAP_HEADER * h, char *buf,
FILE * fp);
static size_t imap_hcache_keylen (const char *fn);
#endif /* USE_HCACHE */
/* imap_read_headers:
* Changed to read many headers instead of just one. It will return the
* msgno of the last message read. It will return a value other than
* msgend if mail comes in while downloading headers (in theory).
*/
int imap_read_headers (IMAP_DATA * idata, int msgbegin, int msgend)
{
CONTEXT *ctx;
char buf[LONG_STRING];
char hdrreq[STRING];
FILE *fp;
char tempfile[_POSIX_PATH_MAX];
int msgno;
IMAP_HEADER h;
int rc, mfhrc, oldmsgcount;
int fetchlast = 0;
const char *want_headers =
"DATE FROM SUBJECT TO CC MESSAGE-ID REFERENCES CONTENT-TYPE CONTENT-DESCRIPTION IN-REPLY-TO REPLY-TO LINES LIST-POST X-LABEL";
#if USE_HCACHE
void *hc = NULL;
unsigned long *uid_validity = NULL;
char uid_buf[64];
#endif /* USE_HCACHE */
ctx = idata->ctx;
if (mutt_bit_isset (idata->capabilities, IMAP4REV1)) {
snprintf (hdrreq, sizeof (hdrreq), "BODY.PEEK[HEADER.FIELDS (%s%s%s)]",
want_headers, ImapHeaders ? " " : "",
ImapHeaders ? ImapHeaders : "");
}
else if (mutt_bit_isset (idata->capabilities, IMAP4)) {
snprintf (hdrreq, sizeof (hdrreq), "RFC822.HEADER.LINES (%s%s%s)",
want_headers, ImapHeaders ? " " : "",
ImapHeaders ? ImapHeaders : "");
}
else { /* Unable to fetch headers for lower versions */
mutt_error _("Unable to fetch headers from this IMAP server version.");
mutt_sleep (2); /* pause a moment to let the user see the error */
return -1;
}
/* instead of downloading all headers and then parsing them, we parse them
* as they come in. */
mutt_mktemp (tempfile);
if (!(fp = safe_fopen (tempfile, "w+"))) {
mutt_error (_("Could not create temporary file %s"), tempfile);
mutt_sleep (2);
return -1;
}
unlink (tempfile);
/* make sure context has room to hold the mailbox */
while ((msgend) >= idata->ctx->hdrmax)
mx_alloc_memory (idata->ctx);
oldmsgcount = ctx->msgcount;
idata->reopen &= ~IMAP_NEWMAIL_PENDING;
idata->newMailCount = 0;
#if USE_HCACHE
if ((hc = mutt_hcache_open (HeaderCache, ctx->path))) {
snprintf (buf, sizeof (buf),
"FETCH %d:%d (UID FLAGS)", msgbegin + 1, msgend + 1);
fetchlast = msgend + 1;
imap_cmd_start (idata, buf);
for (msgno = msgbegin; msgno <= msgend; msgno++) {
if (ReadInc && (!msgno || ((msgno + 1) % ReadInc == 0)))
mutt_message (_("Evaluating cache... [%d/%d]"), msgno + 1, msgend + 1);
rewind (fp);
memset (&h, 0, sizeof (h));
h.data = mem_calloc (1, sizeof (IMAP_HEADER_DATA));
do {
mfhrc = 0;
rc = imap_cmd_step (idata);
if (rc != IMAP_CMD_CONTINUE)
break;
if ((mfhrc =
msg_fetch_header_fetch (idata->ctx, &h, idata->cmd.buf, fp)) == -1)
continue;
else if (mfhrc < 0)
break;
/* make sure we don't get remnants from older larger message headers */
fputs ("\n\n", fp);
sprintf (uid_buf, "/%u", h.data->uid); /* XXX --tg 21:41 04-07-11 */
uid_validity =
(unsigned long *) mutt_hcache_fetch (hc, uid_buf, &imap_hcache_keylen);
if (uid_validity != NULL && *uid_validity == idata->uid_validity) {
ctx->hdrs[msgno] = mutt_hcache_restore((unsigned char *) uid_validity, 0);
ctx->hdrs[msgno]->index = h.sid - 1;
if (h.sid != ctx->msgcount + 1)
debug_print (1, ("imap_read_headers: msgcount and sequence ID are inconsistent!"));
/* messages which have not been expunged are ACTIVE (borrowed from mh
* folders) */
ctx->hdrs[msgno]->active = 1;
ctx->hdrs[msgno]->read = h.read;
ctx->hdrs[msgno]->old = h.old;
ctx->hdrs[msgno]->deleted = h.deleted;
ctx->hdrs[msgno]->flagged = h.flagged;
ctx->hdrs[msgno]->replied = h.replied;
ctx->hdrs[msgno]->changed = h.changed;
/* ctx->hdrs[msgno]->received is restored from mutt_hcache_restore */
ctx->hdrs[msgno]->data = (void *) (h.data);
ctx->msgcount++;
}
rewind (fp);
mem_free (&uid_validity);
}
while ((rc != IMAP_CMD_OK) && ((mfhrc == -1) ||
((msgno + 1) >= fetchlast)));
if ((mfhrc < -1) || ((rc != IMAP_CMD_CONTINUE) && (rc != IMAP_CMD_OK))) {
imap_free_header_data ((void **) &h.data);
fclose (fp);
mutt_hcache_close (hc);
return -1;
}
}
fetchlast = msgbegin;
}
#endif /* USE_HCACHE */
for (msgno = msgbegin; msgno <= msgend; msgno++) {
if (ReadInc && (!msgno || ((msgno + 1) % ReadInc == 0)))
mutt_message (_("Fetching message headers... [%d/%d]"), msgno + 1,
msgend + 1);
if (ctx->hdrs[msgno])
continue;
if (msgno + 1 > fetchlast) {
fetchlast = msgno + 1;
while ((fetchlast <= msgend) && (!ctx->hdrs[fetchlast]))
fetchlast++;
/*
* Make one request for everything. This makes fetching headers an
* order of magnitude faster if you have a large mailbox.
*
* If we get more messages while doing this, we make another
* request for all the new messages.
*/
snprintf (buf, sizeof (buf),
"FETCH %d:%d (UID FLAGS INTERNALDATE RFC822.SIZE %s)",
msgno + 1, fetchlast, hdrreq);
imap_cmd_start (idata, buf);
}
/* freshen fp, h */
rewind (fp);
memset (&h, 0, sizeof (h));
h.data = mem_calloc (1, sizeof (IMAP_HEADER_DATA));
/* this DO loop does two things:
* 1. handles untagged messages, so we can try again on the same msg
* 2. fetches the tagged response at the end of the last message.
*/
do {
mfhrc = 0;
rc = imap_cmd_step (idata);
if (rc != IMAP_CMD_CONTINUE)
break;
if ((mfhrc =
msg_fetch_header (idata->ctx, &h, idata->cmd.buf, fp)) == -1)
continue;
else if (mfhrc < 0)
break;
/* make sure we don't get remnants from older larger message headers */
fputs ("\n\n", fp);
/* update context with message header */
ctx->hdrs[msgno] = mutt_new_header ();
ctx->hdrs[msgno]->index = h.sid - 1;
if (h.sid != ctx->msgcount + 1)
debug_print (1, ("msgcount and sequence ID are inconsistent!\n"));
/* messages which have not been expunged are ACTIVE (borrowed from mh
* folders) */
ctx->hdrs[msgno]->active = 1;
ctx->hdrs[msgno]->read = h.read;
ctx->hdrs[msgno]->old = h.old;
ctx->hdrs[msgno]->deleted = h.deleted;
ctx->hdrs[msgno]->flagged = h.flagged;
ctx->hdrs[msgno]->replied = h.replied;
ctx->hdrs[msgno]->changed = h.changed;
ctx->hdrs[msgno]->received = h.received;
ctx->hdrs[msgno]->data = (void *) (h.data);
rewind (fp);
/* NOTE: if Date: header is missing, mutt_read_rfc822_header depends
* on h.received being set */
ctx->hdrs[msgno]->env = mutt_read_rfc822_header (fp, ctx->hdrs[msgno],
0, 0);
/* content built as a side-effect of mutt_read_rfc822_header */
ctx->hdrs[msgno]->content->length = h.content_length;
#if USE_HCACHE
sprintf (uid_buf, "/%u", h.data->uid);
mutt_hcache_store (hc, uid_buf, ctx->hdrs[msgno], idata->uid_validity,
&imap_hcache_keylen);
#endif /* USE_HCACHE */
ctx->msgcount++;
}
while ((rc != IMAP_CMD_OK) && ((mfhrc == -1) ||
((msgno + 1) >= fetchlast)));
if ((mfhrc < -1) || ((rc != IMAP_CMD_CONTINUE) && (rc != IMAP_CMD_OK))) {
imap_free_header_data ((void **) &h.data);
fclose (fp);
#if USE_HCACHE
mutt_hcache_close (hc);
#endif /* USE_HCACHE */
return -1;
}
/* in case we get new mail while fetching the headers */
if (idata->reopen & IMAP_NEWMAIL_PENDING) {
msgend = idata->newMailCount - 1;
while ((msgend) >= ctx->hdrmax)
mx_alloc_memory (ctx);
idata->reopen &= ~IMAP_NEWMAIL_PENDING;
idata->newMailCount = 0;
}
}
#if USE_HCACHE
mutt_hcache_close (hc);
#endif /* USE_HCACHE */
fclose (fp);
if (ctx->msgcount > oldmsgcount)
mx_update_context (ctx, ctx->msgcount - oldmsgcount);
return msgend;
}
int imap_fetch_message (MESSAGE * msg, CONTEXT * ctx, int msgno)
{
IMAP_DATA *idata;
HEADER *h;
ENVELOPE* newenv;
char buf[LONG_STRING];
char path[_POSIX_PATH_MAX];
char *pc;
long bytes;
int uid;
int cacheno;
IMAP_CACHE *cache;
int read;
int rc;
progress_t bar;
/* Sam's weird courier server returns an OK response even when FETCH
* fails. Thanks Sam. */
short fetched = 0;
idata = (IMAP_DATA *) ctx->data;
h = ctx->hdrs[msgno];
/* see if we already have the message in our cache */
cacheno = HEADER_DATA (h)->uid % IMAP_CACHE_LEN;
cache = &idata->cache[cacheno];
if (cache->path) {
/* don't treat cache errors as fatal, just fall back. */
if (cache->uid == HEADER_DATA(h)->uid && (msg->fp = fopen (cache->path, "r")))
return 0;
else {
unlink (cache->path);
mem_free (&cache->path);
}
}
if (!isendwin ())
mutt_message _("Fetching message...");
cache->uid = HEADER_DATA (h)->uid;
mutt_mktemp (path);
cache->path = str_dup (path);
if (!(msg->fp = safe_fopen (path, "w+"))) {
mem_free (&cache->path);
return -1;
}
/* mark this header as currently inactive so the command handler won't
* also try to update it. HACK until all this code can be moved into the
* command handler */
h->active = 0;
snprintf (buf, sizeof (buf), "UID FETCH %u %s", HEADER_DATA (h)->uid,
(mutt_bit_isset (idata->capabilities, IMAP4REV1) ?
(option (OPTIMAPPEEK) ? "BODY.PEEK[]" : "BODY[]") : "RFC822"));
imap_cmd_start (idata, buf);
do {
if ((rc = imap_cmd_step (idata)) != IMAP_CMD_CONTINUE)
break;
pc = idata->cmd.buf;
pc = imap_next_word (pc);
pc = imap_next_word (pc);
if (!ascii_strncasecmp ("FETCH", pc, 5)) {
while (*pc) {
pc = imap_next_word (pc);
if (pc[0] == '(')
pc++;
if (ascii_strncasecmp ("UID", pc, 3) == 0) {
pc = imap_next_word (pc);
uid = atoi (pc);
if (uid != HEADER_DATA (h)->uid)
mutt_error (_
("The message index is incorrect. Try reopening the mailbox."));
}
else if ((ascii_strncasecmp ("RFC822", pc, 6) == 0) ||
(ascii_strncasecmp ("BODY[]", pc, 6) == 0)) {
pc = imap_next_word (pc);
if (imap_get_literal_count (pc, &bytes) < 0) {
imap_error ("imap_fetch_message()", buf);
goto bail;
}
bar.size = bytes;
bar.msg = _("Fetching message...");
mutt_progress_bar (&bar, 0);
if (imap_read_literal (msg->fp, idata, bytes, &bar) < 0)
goto bail;
/* pick up trailing line */
if ((rc = imap_cmd_step (idata)) != IMAP_CMD_CONTINUE)
goto bail;
pc = idata->cmd.buf;
fetched = 1;
}
/* UW-IMAP will provide a FLAGS update here if the FETCH causes a
* change (eg from \Unseen to \Seen).
* Uncommitted changes in mutt take precedence. If we decide to
* incrementally update flags later, this won't stop us syncing */
else if ((ascii_strncasecmp ("FLAGS", pc, 5) == 0) && !h->changed) {
if ((pc = imap_set_flags (idata, h, pc)) == NULL)
goto bail;
}
}
}
}
while (rc == IMAP_CMD_CONTINUE);
/* see comment before command start. */
h->active = 1;
fflush (msg->fp);
if (ferror (msg->fp)) {
mutt_perror (cache->path);
goto bail;
}
if (rc != IMAP_CMD_OK)
goto bail;
if (!fetched || !imap_code (idata->cmd.buf))
goto bail;
/* Update the header information. Previously, we only downloaded a
* portion of the headers, those required for the main display.
*/
rewind (msg->fp);
/* It may be that the Status header indicates a message is read, but the
* IMAP server doesn't know the message has been \Seen. So we capture
* the server's notion of 'read' and if it differs from the message info
* picked up in mutt_read_rfc822_header, we mark the message (and context
* changed). Another possiblity: ignore Status on IMAP?*/
read = h->read;
newenv = mutt_read_rfc822_header (msg->fp, h, 0, 0);
mutt_merge_envelopes(h->env, &newenv);
/* see above. We want the new status in h->read, so we unset it manually
* and let mutt_set_flag set it correctly, updating context. */
if (read != h->read) {
h->read = read;
mutt_set_flag (ctx, h, M_NEW, read);
}
h->lines = 0;
fgets (buf, sizeof (buf), msg->fp);
while (!feof (msg->fp)) {
h->lines++;
fgets (buf, sizeof (buf), msg->fp);
}
h->content->length = ftello (msg->fp) - h->content->offset;
/* This needs to be done in case this is a multipart message */
#if defined(HAVE_PGP) || defined(HAVE_SMIME)
h->security = crypt_query (h->content);
#endif
mutt_clear_error ();
rewind (msg->fp);
return 0;
bail:
safe_fclose (&msg->fp);
if (cache->path) {
unlink (cache->path);
mem_free (&cache->path);
}
return -1;
}
int imap_append_message (CONTEXT * ctx, MESSAGE * msg)
{
IMAP_DATA *idata;
FILE *fp;
char buf[LONG_STRING];
char mbox[LONG_STRING];
char mailbox[LONG_STRING];
size_t len;
int c, last;
IMAP_MBOX mx;
int rc;
progress_t bar;
size_t sent;
idata = (IMAP_DATA *) ctx->data;
if (imap_parse_path (ctx->path, &mx))
return -1;
imap_fix_path (idata, mx.mbox, mailbox, sizeof (mailbox));
if ((fp = fopen (msg->path, "r")) == NULL) {
mutt_perror (msg->path);
goto fail;
}
/* currently we set the \Seen flag on all messages, but probably we
* should scan the message Status header for flag info. Since we're
* already rereading the whole file for length it isn't any more
* expensive (it'd be nice if we had the file size passed in already
* by the code that writes the file, but that's a lot of changes.
* Ideally we'd have a HEADER structure with flag info here... */
for (last = EOF, len = 0; (c = fgetc (fp)) != EOF; last = c) {
if (c == '\n' && last != '\r')
len++;
len++;
}
rewind (fp);
bar.msg = _("Uploading message...");
bar.size = len;
mutt_progress_bar (&bar, 0);
imap_munge_mbox_name (mbox, sizeof (mbox), mailbox);
snprintf (buf, sizeof (buf), "APPEND %s (%s%s%s%s%s) {%lu}", mbox,
msg->flags.read ? "\\Seen" : "",
msg->flags.read && (msg->flags.replied
|| msg->flags.flagged) ? " " : "",
msg->flags.replied ? "\\Answered" : "", msg->flags.replied
&& msg->flags.flagged ? " " : "",
msg->flags.flagged ? "\\Flagged" : "", (unsigned long) len);
imap_cmd_start (idata, buf);
do
rc = imap_cmd_step (idata);
while (rc == IMAP_CMD_CONTINUE);
if (rc != IMAP_CMD_RESPOND) {
char *pc;
debug_print (1, ("command failed: %s\n", idata->cmd.buf));
pc = idata->cmd.buf + SEQLEN;
SKIPWS (pc);
pc = imap_next_word (pc);
mutt_error ("%s", pc);
mutt_sleep (1);
fclose (fp);
goto fail;
}
for (last = EOF, sent = len = 0; (c = fgetc (fp)) != EOF; last = c) {
if (c == '\n' && last != '\r')
buf[len++] = '\r';
buf[len++] = c;
if (len > sizeof (buf) - 3) {
sent += len;
flush_buffer (buf, &len, idata->conn);
mutt_progress_bar (&bar, sent);
}
}
if (len)
flush_buffer (buf, &len, idata->conn);
mutt_socket_write (idata->conn, "\r\n");
fclose (fp);
do
rc = imap_cmd_step (idata);
while (rc == IMAP_CMD_CONTINUE);
if (!imap_code (idata->cmd.buf)) {
char *pc;
debug_print (1, ("command failed: %s\n", idata->cmd.buf));
pc = idata->cmd.buf + SEQLEN;
SKIPWS (pc);
pc = imap_next_word (pc);
mutt_error ("%s", pc);
mutt_sleep (1);
goto fail;
}
mem_free (&mx.mbox);
return 0;
fail:
mem_free (&mx.mbox);
return -1;
}
/* imap_copy_messages: use server COPY command to copy messages to another
* folder.
* Return codes:
* -1: error
* 0: success
* 1: non-fatal error - try fetch/append */
int imap_copy_messages (CONTEXT * ctx, HEADER * h, char *dest, int delete)
{
IMAP_DATA *idata;
BUFFER cmd, sync_cmd;
char uid[11];
char mbox[LONG_STRING];
char mmbox[LONG_STRING];
int rc;
int n;
IMAP_MBOX mx;
int err_continue = M_NO;
idata = (IMAP_DATA *) ctx->data;
if (imap_parse_path (dest, &mx)) {
debug_print (1, ("bad destination %s\n", dest));
return -1;
}
/* check that the save-to folder is in the same account */
if (!mutt_account_match (&(CTX_DATA->conn->account), &(mx.account))) {
debug_print (3, ("%s not same server as %s\n", dest, ctx->path));
return 1;
}
if (h && h->attach_del) {
debug_print (3, ("Message contains attachments to be deleted\n"));
return 1;
}
imap_fix_path (idata, mx.mbox, mbox, sizeof (mbox));
memset (&sync_cmd, 0, sizeof (sync_cmd));
memset (&cmd, 0, sizeof (cmd));
mutt_buffer_addstr (&cmd, "UID COPY ");
/* Null HEADER* means copy tagged messages */
if (!h) {
/* if any messages have attachments to delete, fall through to FETCH
* and APPEND. TODO: Copy what we can with COPY, fall through for the
* remainder. */
for (n = 0; n < ctx->msgcount; n++) {
if (ctx->hdrs[n]->tagged && ctx->hdrs[n]->attach_del) {
debug_print (3, ("Message contains attachments to be deleted\n"));
return 1;
}
if (ctx->hdrs[n]->tagged && ctx->hdrs[n]->active &&
ctx->hdrs[n]->changed)
{
rc = imap_sync_message (idata, ctx->hdrs[n], &sync_cmd, &err_continue);
if (rc < 0)
{
debug_print (1, ("could not sync\n"));
goto fail;
}
}
}
rc = imap_make_msg_set (idata, &cmd, M_TAG, 0);
if (!rc) {
debug_print (1, ("No messages tagged\n"));
goto fail;
}
mutt_message (_("Copying %d messages to %s..."), rc, mbox);
}
else {
mutt_message (_("Copying message %d to %s..."), h->index + 1, mbox);
snprintf (uid, sizeof (uid), "%u", HEADER_DATA (h)->uid);
mutt_buffer_addstr (&cmd, uid);
if (h->active && h->changed)
{
rc = imap_sync_message (idata, h, &sync_cmd, &err_continue);
if (rc < 0)
{
debug_print (1, ("could not sync\n"));
goto fail;
}
}
}
/* let's get it on */
mutt_buffer_addstr (&cmd, " ");
imap_munge_mbox_name (mmbox, sizeof (mmbox), mbox);
mutt_buffer_addstr (&cmd, mmbox);
rc = imap_exec (idata, cmd.data, IMAP_CMD_FAIL_OK);
if (rc == -2) {
/* bail out if command failed for reasons other than nonexistent target */
if (ascii_strncasecmp
(imap_get_qualifier (idata->cmd.buf), "[TRYCREATE]", 11)) {
imap_error ("imap_copy_messages", idata->cmd.buf);
goto fail;
}
debug_print (2, ("server suggests TRYCREATE\n"));
snprintf (mmbox, sizeof (mmbox), _("Create %s?"), mbox);
if (option (OPTCONFIRMCREATE) && mutt_yesorno (mmbox, 1) < 1) {
mutt_clear_error ();
goto fail;
}
if (imap_create_mailbox (idata, mbox) < 0)
goto fail;
/* try again */
rc = imap_exec (idata, cmd.data, 0);
}
if (rc != 0) {
imap_error ("imap_copy_messages", idata->cmd.buf);
goto fail;
}
/* cleanup */
if (delete) {
if (!h)
for (n = 0; n < ctx->msgcount; n++) {
if (ctx->hdrs[n]->tagged) {
mutt_set_flag (ctx, ctx->hdrs[n], M_DELETE, 1);
mutt_set_flag (ctx, ctx->hdrs[n], M_APPENDED, 1);
if (option (OPTDELETEUNTAG))
mutt_set_flag (ctx, ctx->hdrs[n], M_TAG, 0);
}
}
else {
mutt_set_flag (ctx, h, M_DELETE, 1);
mutt_set_flag (ctx, h, M_APPENDED, 1);
if (option (OPTDELETEUNTAG))
mutt_set_flag (ctx, h, M_TAG, 0);
}
}
if (cmd.data)
mem_free (&cmd.data);
if (sync_cmd.data)
mem_free (&sync_cmd.data);
mem_free (&mx.mbox);
return 0;
fail:
if (cmd.data)
mem_free (&cmd.data);
if (sync_cmd.data)
mem_free (&sync_cmd.data);
mem_free (&mx.mbox);
return -1;
}
/* imap_add_keywords: concatenate custom IMAP tags to list, if they
* appear in the folder flags list. Why wouldn't they? */
void imap_add_keywords (char *s, HEADER * h, LIST * mailbox_flags,
size_t slen)
{
LIST *keywords;
if (!mailbox_flags || !HEADER_DATA (h) || !HEADER_DATA (h)->keywords)
return;
keywords = HEADER_DATA (h)->keywords->next;
while (keywords) {
if (msg_has_flag (mailbox_flags, keywords->data)) {
str_cat (s, slen, keywords->data);
str_cat (s, slen, " ");
}
keywords = keywords->next;
}
}
/* imap_free_header_data: free IMAP_HEADER structure */
void imap_free_header_data (void **data)
{
/* this should be safe even if the list wasn't used */
mutt_free_list (&(((IMAP_HEADER_DATA *) * data)->keywords));
mem_free (data);
}
/* imap_set_flags: fill out the message header according to the flags from
* the server. Expects a flags line of the form "FLAGS (flag flag ...)" */
char *imap_set_flags (IMAP_DATA * idata, HEADER * h, char *s)
{
CONTEXT *ctx = idata->ctx;
IMAP_HEADER newh;
unsigned char readonly;
memset (&newh, 0, sizeof (newh));
newh.data = mem_calloc (1, sizeof (IMAP_HEADER_DATA));
debug_print (2, ("parsing FLAGS\n"));
if ((s = msg_parse_flags (&newh, s)) == NULL) {
mem_free (&newh.data);
return NULL;
}
/* YAUH (yet another ugly hack): temporarily set context to
* read-write even if it's read-only, so *server* updates of
* flags can be processed by mutt_set_flag. ctx->changed must
* be restored afterwards */
readonly = ctx->readonly;
ctx->readonly = 0;
mutt_set_flag (ctx, h, M_NEW, !(newh.read || newh.old));
mutt_set_flag (ctx, h, M_OLD, newh.old);
mutt_set_flag (ctx, h, M_READ, newh.read);
mutt_set_flag (ctx, h, M_DELETE, newh.deleted);
mutt_set_flag (ctx, h, M_FLAG, newh.flagged);
mutt_set_flag (ctx, h, M_REPLIED, newh.replied);
/* this message is now definitively *not* changed (mutt_set_flag
* marks things changed as a side-effect) */
h->changed = 0;
ctx->changed &= ~readonly;
ctx->readonly = readonly;
mutt_free_list (&(HEADER_DATA (h)->keywords));
HEADER_DATA (h)->keywords = newh.data->keywords;
mem_free (&newh.data);
return s;
}
/* msg_fetch_header: import IMAP FETCH response into an IMAP_HEADER.
* Expects string beginning with * n FETCH.
* Returns:
* 0 on success
* -1 if the string is not a fetch response
* -2 if the string is a corrupt fetch response */
static int msg_fetch_header (CONTEXT * ctx, IMAP_HEADER * h, char *buf,
FILE * fp)
{
IMAP_DATA *idata;
long bytes;
int rc = -1; /* default now is that string isn't FETCH response */
idata = (IMAP_DATA *) ctx->data;
if (buf[0] != '*')
return rc;
/* skip to message number */
buf = imap_next_word (buf);
h->sid = atoi (buf);
/* find FETCH tag */
buf = imap_next_word (buf);
if (ascii_strncasecmp ("FETCH", buf, 5))
return rc;
rc = -2; /* we've got a FETCH response, for better or worse */
if (!(buf = strchr (buf, '(')))
return rc;
buf++;
/* FIXME: current implementation - call msg_parse_fetch - if it returns -2,
* read header lines and call it again. Silly. */
if (msg_parse_fetch (h, buf) != -2)
return rc;
if (imap_get_literal_count (buf, &bytes) == 0) {
imap_read_literal (fp, idata, bytes, NULL);
/* we may have other fields of the FETCH _after_ the literal
* (eg Domino puts FLAGS here). Nothing wrong with that, either.
* This all has to go - we should accept literals and nonliterals
* interchangeably at any time. */
if (imap_cmd_step (idata) != IMAP_CMD_CONTINUE)
return rc;
if (msg_parse_fetch (h, idata->cmd.buf) == -1)
return rc;
}
rc = 0; /* success */
/* subtract headers from message size - unfortunately only the subset of
* headers we've requested. */
h->content_length -= bytes;
return rc;
}
#if USE_HCACHE
static size_t imap_hcache_keylen (const char *fn)
{
return str_len (fn);
}
/* msg_fetch_header: import IMAP FETCH response into an IMAP_HEADER.
* Expects string beginning with * n FETCH.
* Returns:
* 0 on success
* -1 if the string is not a fetch response
* -2 if the string is a corrupt fetch response */
static int msg_fetch_header_fetch (CONTEXT * ctx, IMAP_HEADER * h, char *buf,
FILE * fp)
{
IMAP_DATA *idata;
int rc = -1; /* default now is that string isn't FETCH response */
idata = (IMAP_DATA *) ctx->data;
if (buf[0] != '*')
return rc;
/* skip to message number */
buf = imap_next_word (buf);
h->sid = atoi (buf);
/* find FETCH tag */
buf = imap_next_word (buf);
if (ascii_strncasecmp ("FETCH", buf, 5))
return rc;
rc = -2; /* we've got a FETCH response, for better or worse */
if (!(buf = strchr (buf, '(')))
return rc;
buf++;
if (msg_parse_fetch (h, buf) < 0) {
return -2;
}
if (!(buf = strchr (buf, ')')))
return rc;
buf++;
return 0;
}
#endif /* USE_HCACHE */
/* msg_has_flag: do a caseless comparison of the flag against a flag list,
* return 1 if found or flag list has '\*', 0 otherwise */
static int msg_has_flag (LIST * flag_list, const char *flag)
{
if (!flag_list)
return 0;
flag_list = flag_list->next;
while (flag_list) {
if (!ascii_strncasecmp (flag_list->data, flag, str_len (flag_list->data)))
return 1;
flag_list = flag_list->next;
}
return 0;
}
/* msg_parse_fetch: handle headers returned from header fetch */
static int msg_parse_fetch (IMAP_HEADER * h, char *s)
{
char tmp[SHORT_STRING];
char *ptmp;
if (!s)
return -1;
while (*s) {
SKIPWS (s);
if (ascii_strncasecmp ("FLAGS", s, 5) == 0) {
if ((s = msg_parse_flags (h, s)) == NULL)
return -1;
}
else if (ascii_strncasecmp ("UID", s, 3) == 0) {
s += 3;
SKIPWS (s);
h->data->uid = (unsigned int) atoi (s);
s = imap_next_word (s);
}
else if (ascii_strncasecmp ("INTERNALDATE", s, 12) == 0) {
s += 12;
SKIPWS (s);
if (*s != '\"') {
debug_print (1, ("bogus INTERNALDATE entry: %s\n", s));
return -1;
}
s++;
ptmp = tmp;
while (*s && *s != '\"')
*ptmp++ = *s++;
if (*s != '\"')
return -1;
s++; /* skip past the trailing " */
*ptmp = 0;
h->received = imap_parse_date (tmp);
}
else if (ascii_strncasecmp ("RFC822.SIZE", s, 11) == 0) {
s += 11;
SKIPWS (s);
ptmp = tmp;
while (isdigit ((unsigned char) *s))
*ptmp++ = *s++;
*ptmp = 0;
h->content_length = atoi (tmp);
}
else if (!ascii_strncasecmp ("BODY", s, 4) ||
!ascii_strncasecmp ("RFC822.HEADER", s, 13)) {
/* handle above, in msg_fetch_header */
return -2;
}
else if (*s == ')')
s++; /* end of request */
else if (*s) {
/* got something i don't understand */
imap_error ("msg_parse_fetch", s);
return -1;
}
}
return 0;
}
/* msg_parse_flags: read a FLAGS token into an IMAP_HEADER */
static char *msg_parse_flags (IMAP_HEADER * h, char *s)
{
int recent = 0;
/* sanity-check string */
if (ascii_strncasecmp ("FLAGS", s, 5) != 0) {
debug_print (1, ("not a FLAGS response: %s\n", s));
return NULL;
}
s += 5;
SKIPWS (s);
if (*s != '(') {
debug_print (1, ("bogus FLAGS response: %s\n", s));
return NULL;
}
s++;
/* start parsing */
while (*s && *s != ')') {
if (ascii_strncasecmp ("\\deleted", s, 8) == 0) {
s += 8;
h->deleted = 1;
}
else if (ascii_strncasecmp ("\\flagged", s, 8) == 0) {
s += 8;
h->flagged = 1;
}
else if (ascii_strncasecmp ("\\answered", s, 9) == 0) {
s += 9;
h->replied = 1;
}
else if (ascii_strncasecmp ("\\seen", s, 5) == 0) {
s += 5;
h->read = 1;
}
else if (ascii_strncasecmp ("\\recent", s, 5) == 0) {
s += 7;
recent = 1;
}
else {
/* store custom flags as well */
char ctmp;
char *flag_word = s;
if (!h->data->keywords)
h->data->keywords = mutt_new_list ();
while (*s && !ISSPACE (*s) && *s != ')')
s++;
ctmp = *s;
*s = '\0';
mutt_add_list (h->data->keywords, flag_word);
*s = ctmp;
}
SKIPWS (s);
}
/* wrap up, or note bad flags response */
if (*s == ')') {
/* if a message is neither seen nor recent, it is OLD. */
if (option (OPTMARKOLD) && !recent && !(h->read))
h->old = 1;
s++;
}
else {
debug_print (1, ("Unterminated FLAGS response: %s\n", s));
return NULL;
}
return s;
}
static void flush_buffer (char *buf, size_t * len, CONNECTION * conn)
{
buf[*len] = '\0';
mutt_socket_write (conn, buf);
*len = 0;
}
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