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notmuch/notmuch-show.c
Peter Wang b96ba6326a show: indicate length, encoding of omitted body content 
If a leaf part's body content is omitted, return the encoded length and
transfer encoding in --format=json output.  This information may be used
by the consumer, e.g. to decide whether to download a large attachment
over a slow link.

Returning the _encoded_ content length is more efficient than returning
the _decoded_ content length.  Returning the transfer encoding allows
the consumer to estimate the decoded content length.
2012-12-17 09:10:35 -04:00

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/* notmuch - Not much of an email program, (just index and search)
*
* Copyright © 2009 Carl Worth
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/ .
*
* Author: Carl Worth <cworth@cworth.org>
*/
#include "notmuch-client.h"
#include "gmime-filter-reply.h"
#include "sprinter.h"
static notmuch_status_t
format_part_text (const void *ctx, sprinter_t *sp, mime_node_t *node,
int indent, const notmuch_show_params_t *params);
static const notmuch_show_format_t format_text = {
.new_sprinter = sprinter_text_create,
.part = format_part_text,
};
static notmuch_status_t
format_part_sprinter_entry (const void *ctx, sprinter_t *sp, mime_node_t *node,
int indent, const notmuch_show_params_t *params);
static const notmuch_show_format_t format_json = {
.new_sprinter = sprinter_json_create,
.part = format_part_sprinter_entry,
};
static const notmuch_show_format_t format_sexp = {
.new_sprinter = sprinter_sexp_create,
.part = format_part_sprinter_entry,
};
static notmuch_status_t
format_part_mbox (const void *ctx, sprinter_t *sp, mime_node_t *node,
int indent, const notmuch_show_params_t *params);
static const notmuch_show_format_t format_mbox = {
.new_sprinter = sprinter_text_create,
.part = format_part_mbox,
};
static notmuch_status_t
format_part_raw (unused (const void *ctx), sprinter_t *sp, mime_node_t *node,
unused (int indent),
unused (const notmuch_show_params_t *params));
static const notmuch_show_format_t format_raw = {
.new_sprinter = sprinter_text_create,
.part = format_part_raw,
};
static const char *
_get_tags_as_string (const void *ctx, notmuch_message_t *message)
{
notmuch_tags_t *tags;
int first = 1;
const char *tag;
char *result;
result = talloc_strdup (ctx, "");
if (result == NULL)
return NULL;
for (tags = notmuch_message_get_tags (message);
notmuch_tags_valid (tags);
notmuch_tags_move_to_next (tags))
{
tag = notmuch_tags_get (tags);
result = talloc_asprintf_append (result, "%s%s",
first ? "" : " ", tag);
first = 0;
}
return result;
}
/* Get a nice, single-line summary of message. */
static const char *
_get_one_line_summary (const void *ctx, notmuch_message_t *message)
{
const char *from;
time_t date;
const char *relative_date;
const char *tags;
from = notmuch_message_get_header (message, "from");
date = notmuch_message_get_date (message);
relative_date = notmuch_time_relative_date (ctx, date);
tags = _get_tags_as_string (ctx, message);
return talloc_asprintf (ctx, "%s (%s) (%s)",
from, relative_date, tags);
}
/* Emit a sequence of key/value pairs for the metadata of message.
* The caller should begin a map before calling this. */
static void
format_message_sprinter (sprinter_t *sp, notmuch_message_t *message)
{
/* Any changes to the JSON or S-Expression format should be
* reflected in the file devel/schemata. */
void *local = talloc_new (NULL);
notmuch_tags_t *tags;
time_t date;
const char *relative_date;
sp->map_key (sp, "id");
sp->string (sp, notmuch_message_get_message_id (message));
sp->map_key (sp, "match");
sp->boolean (sp, notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_MATCH));
sp->map_key (sp, "excluded");
sp->boolean (sp, notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_EXCLUDED));
sp->map_key (sp, "filename");
sp->string (sp, notmuch_message_get_filename (message));
sp->map_key (sp, "timestamp");
date = notmuch_message_get_date (message);
sp->integer (sp, date);
sp->map_key (sp, "date_relative");
relative_date = notmuch_time_relative_date (local, date);
sp->string (sp, relative_date);
sp->map_key (sp, "tags");
sp->begin_list (sp);
for (tags = notmuch_message_get_tags (message);
notmuch_tags_valid (tags);
notmuch_tags_move_to_next (tags))
sp->string (sp, notmuch_tags_get (tags));
sp->end (sp);
talloc_free (local);
}
/* Extract just the email address from the contents of a From:
* header. */
static const char *
_extract_email_address (const void *ctx, const char *from)
{
InternetAddressList *addresses;
InternetAddress *address;
InternetAddressMailbox *mailbox;
const char *email = "MAILER-DAEMON";
addresses = internet_address_list_parse_string (from);
/* Bail if there is no address here. */
if (addresses == NULL || internet_address_list_length (addresses) < 1)
goto DONE;
/* Otherwise, just use the first address. */
address = internet_address_list_get_address (addresses, 0);
/* The From header should never contain an address group rather
* than a mailbox. So bail if it does. */
if (! INTERNET_ADDRESS_IS_MAILBOX (address))
goto DONE;
mailbox = INTERNET_ADDRESS_MAILBOX (address);
email = internet_address_mailbox_get_addr (mailbox);
email = talloc_strdup (ctx, email);
DONE:
if (addresses)
g_object_unref (addresses);
return email;
}
/* Return 1 if 'line' is an mbox From_ line---that is, a line
* beginning with zero or more '>' characters followed by the
* characters 'F', 'r', 'o', 'm', and space.
*
* Any characters at all may appear after that in the line.
*/
static int
_is_from_line (const char *line)
{
const char *s = line;
if (line == NULL)
return 0;
while (*s == '>')
s++;
if (STRNCMP_LITERAL (s, "From ") == 0)
return 1;
else
return 0;
}
void
format_headers_sprinter (sprinter_t *sp, GMimeMessage *message,
notmuch_bool_t reply)
{
/* Any changes to the JSON or S-Expression format should be
* reflected in the file devel/schemata. */
InternetAddressList *recipients;
const char *recipients_string;
const char *reply_to_string;
sp->begin_map (sp);
sp->map_key (sp, "Subject");
sp->string (sp, g_mime_message_get_subject (message));
sp->map_key (sp, "From");
sp->string (sp, g_mime_message_get_sender (message));
recipients = g_mime_message_get_recipients (message, GMIME_RECIPIENT_TYPE_TO);
recipients_string = internet_address_list_to_string (recipients, 0);
if (recipients_string) {
sp->map_key (sp, "To");
sp->string (sp, recipients_string);
}
recipients = g_mime_message_get_recipients (message, GMIME_RECIPIENT_TYPE_CC);
recipients_string = internet_address_list_to_string (recipients, 0);
if (recipients_string) {
sp->map_key (sp, "Cc");
sp->string (sp, recipients_string);
}
recipients = g_mime_message_get_recipients (message, GMIME_RECIPIENT_TYPE_BCC);
recipients_string = internet_address_list_to_string (recipients, 0);
if (recipients_string) {
sp->map_key (sp, "Bcc");
sp->string (sp, recipients_string);
}
reply_to_string = g_mime_message_get_reply_to (message);
if (reply_to_string) {
sp->map_key (sp, "Reply-To");
sp->string (sp, reply_to_string);
}
if (reply) {
sp->map_key (sp, "In-reply-to");
sp->string (sp, g_mime_object_get_header (GMIME_OBJECT (message), "In-reply-to"));
sp->map_key (sp, "References");
sp->string (sp, g_mime_object_get_header (GMIME_OBJECT (message), "References"));
} else {
sp->map_key (sp, "Date");
sp->string (sp, g_mime_message_get_date_as_string (message));
}
sp->end (sp);
}
/* Write a MIME text part out to the given stream.
*
* If (flags & NOTMUCH_SHOW_TEXT_PART_REPLY), this prepends "> " to
* each output line.
*
* Both line-ending conversion (CRLF->LF) and charset conversion ( ->
* UTF-8) will be performed, so it is inappropriate to call this
* function with a non-text part. Doing so will trigger an internal
* error.
*/
void
show_text_part_content (GMimeObject *part, GMimeStream *stream_out,
notmuch_show_text_part_flags flags)
{
GMimeContentType *content_type = g_mime_object_get_content_type (GMIME_OBJECT (part));
GMimeStream *stream_filter = NULL;
GMimeDataWrapper *wrapper;
const char *charset;
if (! g_mime_content_type_is_type (content_type, "text", "*"))
INTERNAL_ERROR ("Illegal request to format non-text part (%s) as text.",
g_mime_content_type_to_string (content_type));
if (stream_out == NULL)
return;
stream_filter = g_mime_stream_filter_new (stream_out);
g_mime_stream_filter_add(GMIME_STREAM_FILTER (stream_filter),
g_mime_filter_crlf_new (FALSE, FALSE));
charset = g_mime_object_get_content_type_parameter (part, "charset");
if (charset) {
GMimeFilter *charset_filter;
charset_filter = g_mime_filter_charset_new (charset, "UTF-8");
/* This result can be NULL for things like "unknown-8bit".
* Don't set a NULL filter as that makes GMime print
* annoying assertion-failure messages on stderr. */
if (charset_filter) {
g_mime_stream_filter_add (GMIME_STREAM_FILTER (stream_filter),
charset_filter);
g_object_unref (charset_filter);
}
}
if (flags & NOTMUCH_SHOW_TEXT_PART_REPLY) {
GMimeFilter *reply_filter;
reply_filter = g_mime_filter_reply_new (TRUE);
if (reply_filter) {
g_mime_stream_filter_add (GMIME_STREAM_FILTER (stream_filter),
reply_filter);
g_object_unref (reply_filter);
}
}
wrapper = g_mime_part_get_content_object (GMIME_PART (part));
if (wrapper && stream_filter)
g_mime_data_wrapper_write_to_stream (wrapper, stream_filter);
if (stream_filter)
g_object_unref(stream_filter);
}
#ifdef GMIME_ATLEAST_26
static const char*
signature_status_to_string (GMimeSignatureStatus x)
{
switch (x) {
case GMIME_SIGNATURE_STATUS_GOOD:
return "good";
case GMIME_SIGNATURE_STATUS_BAD:
return "bad";
case GMIME_SIGNATURE_STATUS_ERROR:
return "error";
}
return "unknown";
}
#else
static const char*
signer_status_to_string (GMimeSignerStatus x)
{
switch (x) {
case GMIME_SIGNER_STATUS_NONE:
return "none";
case GMIME_SIGNER_STATUS_GOOD:
return "good";
case GMIME_SIGNER_STATUS_BAD:
return "bad";
case GMIME_SIGNER_STATUS_ERROR:
return "error";
}
return "unknown";
}
#endif
#ifdef GMIME_ATLEAST_26
static void
format_part_sigstatus_sprinter (sprinter_t *sp, mime_node_t *node)
{
/* Any changes to the JSON or S-Expression format should be
* reflected in the file devel/schemata. */
GMimeSignatureList *siglist = node->sig_list;
sp->begin_list (sp);
if (!siglist) {
sp->end (sp);
return;
}
int i;
for (i = 0; i < g_mime_signature_list_length (siglist); i++) {
GMimeSignature *signature = g_mime_signature_list_get_signature (siglist, i);
sp->begin_map (sp);
/* status */
GMimeSignatureStatus status = g_mime_signature_get_status (signature);
sp->map_key (sp, "status");
sp->string (sp, signature_status_to_string (status));
GMimeCertificate *certificate = g_mime_signature_get_certificate (signature);
if (status == GMIME_SIGNATURE_STATUS_GOOD) {
if (certificate) {
sp->map_key (sp, "fingerprint");
sp->string (sp, g_mime_certificate_get_fingerprint (certificate));
}
/* these dates are seconds since the epoch; should we
* provide a more human-readable format string? */
time_t created = g_mime_signature_get_created (signature);
if (created != -1) {
sp->map_key (sp, "created");
sp->integer (sp, created);
}
time_t expires = g_mime_signature_get_expires (signature);
if (expires > 0) {
sp->map_key (sp, "expires");
sp->integer (sp, expires);
}
/* output user id only if validity is FULL or ULTIMATE. */
/* note that gmime is using the term "trust" here, which
* is WRONG. It's actually user id "validity". */
if (certificate) {
const char *name = g_mime_certificate_get_name (certificate);
GMimeCertificateTrust trust = g_mime_certificate_get_trust (certificate);
if (name && (trust == GMIME_CERTIFICATE_TRUST_FULLY || trust == GMIME_CERTIFICATE_TRUST_ULTIMATE)) {
sp->map_key (sp, "userid");
sp->string (sp, name);
}
}
} else if (certificate) {
const char *key_id = g_mime_certificate_get_key_id (certificate);
if (key_id) {
sp->map_key (sp, "keyid");
sp->string (sp, key_id);
}
}
GMimeSignatureError errors = g_mime_signature_get_errors (signature);
if (errors != GMIME_SIGNATURE_ERROR_NONE) {
sp->map_key (sp, "errors");
sp->integer (sp, errors);
}
sp->end (sp);
}
sp->end (sp);
}
#else
static void
format_part_sigstatus_sprinter (sprinter_t *sp, mime_node_t *node)
{
const GMimeSignatureValidity* validity = node->sig_validity;
sp->begin_list (sp);
if (!validity) {
sp->end (sp);
return;
}
const GMimeSigner *signer = g_mime_signature_validity_get_signers (validity);
while (signer) {
sp->begin_map (sp);
/* status */
sp->map_key (sp, "status");
sp->string (sp, signer_status_to_string (signer->status));
if (signer->status == GMIME_SIGNER_STATUS_GOOD)
{
if (signer->fingerprint) {
sp->map_key (sp, "fingerprint");
sp->string (sp, signer->fingerprint);
}
/* these dates are seconds since the epoch; should we
* provide a more human-readable format string? */
if (signer->created) {
sp->map_key (sp, "created");
sp->integer (sp, signer->created);
}
if (signer->expires) {
sp->map_key (sp, "expires");
sp->integer (sp, signer->expires);
}
/* output user id only if validity is FULL or ULTIMATE. */
/* note that gmime is using the term "trust" here, which
* is WRONG. It's actually user id "validity". */
if ((signer->name) && (signer->trust)) {
if ((signer->trust == GMIME_SIGNER_TRUST_FULLY) || (signer->trust == GMIME_SIGNER_TRUST_ULTIMATE)) {
sp->map_key (sp, "userid");
sp->string (sp, signer->name);
}
}
} else {
if (signer->keyid) {
sp->map_key (sp, "keyid");
sp->string (sp, signer->keyid);
}
}
if (signer->errors != GMIME_SIGNER_ERROR_NONE) {
sp->map_key (sp, "errors");
sp->integer (sp, signer->errors);
}
sp->end (sp);
signer = signer->next;
}
sp->end (sp);
}
#endif
static notmuch_status_t
format_part_text (const void *ctx, sprinter_t *sp, mime_node_t *node,
int indent, const notmuch_show_params_t *params)
{
/* The disposition and content-type metadata are associated with
* the envelope for message parts */
GMimeObject *meta = node->envelope_part ?
GMIME_OBJECT (node->envelope_part) : node->part;
GMimeContentType *content_type = g_mime_object_get_content_type (meta);
const notmuch_bool_t leaf = GMIME_IS_PART (node->part);
const char *part_type;
int i;
if (node->envelope_file) {
notmuch_message_t *message = node->envelope_file;
part_type = "message";
printf ("\f%s{ id:%s depth:%d match:%d excluded:%d filename:%s\n",
part_type,
notmuch_message_get_message_id (message),
indent,
notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_MATCH) ? 1 : 0,
notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_EXCLUDED) ? 1 : 0,
notmuch_message_get_filename (message));
} else {
GMimeContentDisposition *disposition = g_mime_object_get_content_disposition (meta);
const char *cid = g_mime_object_get_content_id (meta);
const char *filename = leaf ?
g_mime_part_get_filename (GMIME_PART (node->part)) : NULL;
if (disposition &&
strcmp (disposition->disposition, GMIME_DISPOSITION_ATTACHMENT) == 0)
part_type = "attachment";
else
part_type = "part";
printf ("\f%s{ ID: %d", part_type, node->part_num);
if (filename)
printf (", Filename: %s", filename);
if (cid)
printf (", Content-id: %s", cid);
printf (", Content-type: %s\n", g_mime_content_type_to_string (content_type));
}
if (GMIME_IS_MESSAGE (node->part)) {
GMimeMessage *message = GMIME_MESSAGE (node->part);
InternetAddressList *recipients;
const char *recipients_string;
printf ("\fheader{\n");
if (node->envelope_file)
printf ("%s\n", _get_one_line_summary (ctx, node->envelope_file));
printf ("Subject: %s\n", g_mime_message_get_subject (message));
printf ("From: %s\n", g_mime_message_get_sender (message));
recipients = g_mime_message_get_recipients (message, GMIME_RECIPIENT_TYPE_TO);
recipients_string = internet_address_list_to_string (recipients, 0);
if (recipients_string)
printf ("To: %s\n", recipients_string);
recipients = g_mime_message_get_recipients (message, GMIME_RECIPIENT_TYPE_CC);
recipients_string = internet_address_list_to_string (recipients, 0);
if (recipients_string)
printf ("Cc: %s\n", recipients_string);
printf ("Date: %s\n", g_mime_message_get_date_as_string (message));
printf ("\fheader}\n");
printf ("\fbody{\n");
}
if (leaf) {
if (g_mime_content_type_is_type (content_type, "text", "*") &&
!g_mime_content_type_is_type (content_type, "text", "html"))
{
GMimeStream *stream_stdout = g_mime_stream_file_new (stdout);
g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream_stdout), FALSE);
show_text_part_content (node->part, stream_stdout, 0);
g_object_unref(stream_stdout);
} else {
printf ("Non-text part: %s\n",
g_mime_content_type_to_string (content_type));
}
}
for (i = 0; i < node->nchildren; i++)
format_part_text (ctx, sp, mime_node_child (node, i), indent, params);
if (GMIME_IS_MESSAGE (node->part))
printf ("\fbody}\n");
printf ("\f%s}\n", part_type);
return NOTMUCH_STATUS_SUCCESS;
}
static void
format_omitted_part_meta_sprinter (sprinter_t *sp, GMimeObject *meta, GMimePart *part)
{
const char *content_charset = g_mime_object_get_content_type_parameter (meta, "charset");
const char *cte = g_mime_object_get_header (meta, "content-transfer-encoding");
GMimeDataWrapper *wrapper = g_mime_part_get_content_object (part);
GMimeStream *stream = g_mime_data_wrapper_get_stream (wrapper);
ssize_t content_length = g_mime_stream_length (stream);
if (content_charset != NULL) {
sp->map_key (sp, "content-charset");
sp->string (sp, content_charset);
}
if (cte != NULL) {
sp->map_key (sp, "content-transfer-encoding");
sp->string (sp, cte);
}
if (content_length >= 0) {
sp->map_key (sp, "content-length");
sp->integer (sp, content_length);
}
}
void
format_part_sprinter (const void *ctx, sprinter_t *sp, mime_node_t *node,
notmuch_bool_t first, notmuch_bool_t output_body)
{
/* Any changes to the JSON or S-Expression format should be
* reflected in the file devel/schemata. */
if (node->envelope_file) {
sp->begin_map (sp);
format_message_sprinter (sp, node->envelope_file);
sp->map_key (sp, "headers");
format_headers_sprinter (sp, GMIME_MESSAGE (node->part), FALSE);
if (output_body) {
sp->map_key (sp, "body");
sp->begin_list (sp);
format_part_sprinter (ctx, sp, mime_node_child (node, 0), first, TRUE);
sp->end (sp);
}
sp->end (sp);
return;
}
/* The disposition and content-type metadata are associated with
* the envelope for message parts */
GMimeObject *meta = node->envelope_part ?
GMIME_OBJECT (node->envelope_part) : node->part;
GMimeContentType *content_type = g_mime_object_get_content_type (meta);
const char *cid = g_mime_object_get_content_id (meta);
const char *filename = GMIME_IS_PART (node->part) ?
g_mime_part_get_filename (GMIME_PART (node->part)) : NULL;
int nclose = 0;
int i;
sp->begin_map (sp);
sp->map_key (sp, "id");
sp->integer (sp, node->part_num);
if (node->decrypt_attempted) {
sp->map_key (sp, "encstatus");
sp->begin_list (sp);
sp->begin_map (sp);
sp->map_key (sp, "status");
sp->string (sp, node->decrypt_success ? "good" : "bad");
sp->end (sp);
sp->end (sp);
}
if (node->verify_attempted) {
sp->map_key (sp, "sigstatus");
format_part_sigstatus_sprinter (sp, node);
}
sp->map_key (sp, "content-type");
sp->string (sp, g_mime_content_type_to_string (content_type));
if (cid) {
sp->map_key (sp, "content-id");
sp->string (sp, cid);
}
if (filename) {
sp->map_key (sp, "filename");
sp->string (sp, filename);
}
if (GMIME_IS_PART (node->part)) {
/* For non-HTML text parts, we include the content in the
* JSON. Since JSON must be Unicode, we handle charset
* decoding here and do not report a charset to the caller.
* For text/html parts, we do not include the content. If a
* caller is interested in text/html parts, it should retrieve
* them separately and they will not be decoded. Since this
* makes charset decoding the responsibility on the caller, we
* report the charset for text/html parts.
*/
if (g_mime_content_type_is_type (content_type, "text", "*") &&
! g_mime_content_type_is_type (content_type, "text", "html"))
{
GMimeStream *stream_memory = g_mime_stream_mem_new ();
GByteArray *part_content;
show_text_part_content (node->part, stream_memory, 0);
part_content = g_mime_stream_mem_get_byte_array (GMIME_STREAM_MEM (stream_memory));
sp->map_key (sp, "content");
sp->string_len (sp, (char *) part_content->data, part_content->len);
g_object_unref (stream_memory);
} else {
format_omitted_part_meta_sprinter (sp, meta, GMIME_PART (node->part));
}
} else if (GMIME_IS_MULTIPART (node->part)) {
sp->map_key (sp, "content");
sp->begin_list (sp);
nclose = 1;
} else if (GMIME_IS_MESSAGE (node->part)) {
sp->map_key (sp, "content");
sp->begin_list (sp);
sp->begin_map (sp);
sp->map_key (sp, "headers");
format_headers_sprinter (sp, GMIME_MESSAGE (node->part), FALSE);
sp->map_key (sp, "body");
sp->begin_list (sp);
nclose = 3;
}
for (i = 0; i < node->nchildren; i++)
format_part_sprinter (ctx, sp, mime_node_child (node, i), i == 0, TRUE);
/* Close content structures */
for (i = 0; i < nclose; i++)
sp->end (sp);
/* Close part map */
sp->end (sp);
}
static notmuch_status_t
format_part_sprinter_entry (const void *ctx, sprinter_t *sp,
mime_node_t *node, unused (int indent),
const notmuch_show_params_t *params)
{
format_part_sprinter (ctx, sp, node, TRUE, params->output_body);
return NOTMUCH_STATUS_SUCCESS;
}
/* Print a message in "mboxrd" format as documented, for example,
* here:
*
* http://qmail.org/qmail-manual-html/man5/mbox.html
*/
static notmuch_status_t
format_part_mbox (const void *ctx, unused (sprinter_t *sp), mime_node_t *node,
unused (int indent),
unused (const notmuch_show_params_t *params))
{
notmuch_message_t *message = node->envelope_file;
const char *filename;
FILE *file;
const char *from;
time_t date;
struct tm date_gmtime;
char date_asctime[26];
char *line = NULL;
size_t line_size;
ssize_t line_len;
if (!message)
INTERNAL_ERROR ("format_part_mbox requires a root part");
filename = notmuch_message_get_filename (message);
file = fopen (filename, "r");
if (file == NULL) {
fprintf (stderr, "Failed to open %s: %s\n",
filename, strerror (errno));
return NOTMUCH_STATUS_FILE_ERROR;
}
from = notmuch_message_get_header (message, "from");
from = _extract_email_address (ctx, from);
date = notmuch_message_get_date (message);
gmtime_r (&date, &date_gmtime);
asctime_r (&date_gmtime, date_asctime);
printf ("From %s %s", from, date_asctime);
while ((line_len = getline (&line, &line_size, file)) != -1 ) {
if (_is_from_line (line))
putchar ('>');
printf ("%s", line);
}
printf ("\n");
fclose (file);
return NOTMUCH_STATUS_SUCCESS;
}
static notmuch_status_t
format_part_raw (unused (const void *ctx), unused (sprinter_t *sp),
mime_node_t *node, unused (int indent),
unused (const notmuch_show_params_t *params))
{
if (node->envelope_file) {
/* Special case the entire message to avoid MIME parsing. */
const char *filename;
FILE *file;
size_t size;
char buf[4096];
filename = notmuch_message_get_filename (node->envelope_file);
if (filename == NULL) {
fprintf (stderr, "Error: Cannot get message filename.\n");
return NOTMUCH_STATUS_FILE_ERROR;
}
file = fopen (filename, "r");
if (file == NULL) {
fprintf (stderr, "Error: Cannot open file %s: %s\n", filename, strerror (errno));
return NOTMUCH_STATUS_FILE_ERROR;
}
while (!feof (file)) {
size = fread (buf, 1, sizeof (buf), file);
if (ferror (file)) {
fprintf (stderr, "Error: Read failed from %s\n", filename);
fclose (file);
return NOTMUCH_STATUS_FILE_ERROR;
}
if (fwrite (buf, size, 1, stdout) != 1) {
fprintf (stderr, "Error: Write failed\n");
fclose (file);
return NOTMUCH_STATUS_FILE_ERROR;
}
}
fclose (file);
return NOTMUCH_STATUS_SUCCESS;
}
GMimeStream *stream_stdout;
GMimeStream *stream_filter = NULL;
stream_stdout = g_mime_stream_file_new (stdout);
g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream_stdout), FALSE);
stream_filter = g_mime_stream_filter_new (stream_stdout);
if (GMIME_IS_PART (node->part)) {
/* For leaf parts, we emit only the transfer-decoded
* body. */
GMimeDataWrapper *wrapper;
wrapper = g_mime_part_get_content_object (GMIME_PART (node->part));
if (wrapper && stream_filter)
g_mime_data_wrapper_write_to_stream (wrapper, stream_filter);
} else {
/* Write out the whole part. For message parts (the root
* part and embedded message parts), this will be the
* message including its headers (but not the
* encapsulating part's headers). For multipart parts,
* this will include the headers. */
if (stream_filter)
g_mime_object_write_to_stream (node->part, stream_filter);
}
if (stream_filter)
g_object_unref (stream_filter);
if (stream_stdout)
g_object_unref(stream_stdout);
return NOTMUCH_STATUS_SUCCESS;
}
static notmuch_status_t
show_message (void *ctx,
const notmuch_show_format_t *format,
sprinter_t *sp,
notmuch_message_t *message,
int indent,
notmuch_show_params_t *params)
{
void *local = talloc_new (ctx);
mime_node_t *root, *part;
notmuch_status_t status;
status = mime_node_open (local, message, &(params->crypto), &root);
if (status)
goto DONE;
part = mime_node_seek_dfs (root, (params->part < 0 ? 0 : params->part));
if (part)
status = format->part (local, sp, part, indent, params);
DONE:
talloc_free (local);
return status;
}
static notmuch_status_t
show_messages (void *ctx,
const notmuch_show_format_t *format,
sprinter_t *sp,
notmuch_messages_t *messages,
int indent,
notmuch_show_params_t *params)
{
notmuch_message_t *message;
notmuch_bool_t match;
notmuch_bool_t excluded;
int next_indent;
notmuch_status_t status, res = NOTMUCH_STATUS_SUCCESS;
sp->begin_list (sp);
for (;
notmuch_messages_valid (messages);
notmuch_messages_move_to_next (messages))
{
sp->begin_list (sp);
message = notmuch_messages_get (messages);
match = notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_MATCH);
excluded = notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_EXCLUDED);
next_indent = indent;
if ((match && (!excluded || !params->omit_excluded)) || params->entire_thread) {
status = show_message (ctx, format, sp, message, indent, params);
if (status && !res)
res = status;
next_indent = indent + 1;
} else {
sp->null (sp);
}
status = show_messages (ctx,
format, sp,
notmuch_message_get_replies (message),
next_indent,
params);
if (status && !res)
res = status;
notmuch_message_destroy (message);
sp->end (sp);
}
sp->end (sp);
return res;
}
/* Formatted output of single message */
static int
do_show_single (void *ctx,
notmuch_query_t *query,
const notmuch_show_format_t *format,
sprinter_t *sp,
notmuch_show_params_t *params)
{
notmuch_messages_t *messages;
notmuch_message_t *message;
if (notmuch_query_count_messages (query) != 1) {
fprintf (stderr, "Error: search term did not match precisely one message.\n");
return 1;
}
messages = notmuch_query_search_messages (query);
message = notmuch_messages_get (messages);
if (message == NULL) {
fprintf (stderr, "Error: Cannot find matching message.\n");
return 1;
}
notmuch_message_set_flag (message, NOTMUCH_MESSAGE_FLAG_MATCH, 1);
return show_message (ctx, format, sp, message, 0, params)
!= NOTMUCH_STATUS_SUCCESS;
}
/* Formatted output of threads */
static int
do_show (void *ctx,
notmuch_query_t *query,
const notmuch_show_format_t *format,
sprinter_t *sp,
notmuch_show_params_t *params)
{
notmuch_threads_t *threads;
notmuch_thread_t *thread;
notmuch_messages_t *messages;
notmuch_status_t status, res = NOTMUCH_STATUS_SUCCESS;
sp->begin_list (sp);
for (threads = notmuch_query_search_threads (query);
notmuch_threads_valid (threads);
notmuch_threads_move_to_next (threads))
{
thread = notmuch_threads_get (threads);
messages = notmuch_thread_get_toplevel_messages (thread);
if (messages == NULL)
INTERNAL_ERROR ("Thread %s has no toplevel messages.\n",
notmuch_thread_get_thread_id (thread));
status = show_messages (ctx, format, sp, messages, 0, params);
if (status && !res)
res = status;
notmuch_thread_destroy (thread);
}
sp->end (sp);
return res != NOTMUCH_STATUS_SUCCESS;
}
enum {
NOTMUCH_FORMAT_NOT_SPECIFIED,
NOTMUCH_FORMAT_JSON,
NOTMUCH_FORMAT_SEXP,
NOTMUCH_FORMAT_TEXT,
NOTMUCH_FORMAT_MBOX,
NOTMUCH_FORMAT_RAW
};
enum {
ENTIRE_THREAD_DEFAULT,
ENTIRE_THREAD_TRUE,
ENTIRE_THREAD_FALSE,
};
/* The following is to allow future options to be added more easily */
enum {
EXCLUDE_TRUE,
EXCLUDE_FALSE,
};
int
notmuch_show_command (void *ctx, unused (int argc), unused (char *argv[]))
{
notmuch_config_t *config;
notmuch_database_t *notmuch;
notmuch_query_t *query;
char *query_string;
int opt_index, ret;
const notmuch_show_format_t *format = &format_text;
sprinter_t *sprinter;
notmuch_show_params_t params = {
.part = -1,
.omit_excluded = TRUE,
.output_body = TRUE,
.crypto = {
.verify = FALSE,
.decrypt = FALSE
}
};
int format_sel = NOTMUCH_FORMAT_NOT_SPECIFIED;
int exclude = EXCLUDE_TRUE;
int entire_thread = ENTIRE_THREAD_DEFAULT;
notmuch_opt_desc_t options[] = {
{ NOTMUCH_OPT_KEYWORD, &format_sel, "format", 'f',
(notmuch_keyword_t []){ { "json", NOTMUCH_FORMAT_JSON },
{ "text", NOTMUCH_FORMAT_TEXT },
{ "sexp", NOTMUCH_FORMAT_SEXP },
{ "mbox", NOTMUCH_FORMAT_MBOX },
{ "raw", NOTMUCH_FORMAT_RAW },
{ 0, 0 } } },
{ NOTMUCH_OPT_INT, &notmuch_format_version, "format-version", 0, 0 },
{ NOTMUCH_OPT_KEYWORD, &exclude, "exclude", 'x',
(notmuch_keyword_t []){ { "true", EXCLUDE_TRUE },
{ "false", EXCLUDE_FALSE },
{ 0, 0 } } },
{ NOTMUCH_OPT_KEYWORD, &entire_thread, "entire-thread", 't',
(notmuch_keyword_t []){ { "true", ENTIRE_THREAD_TRUE },
{ "false", ENTIRE_THREAD_FALSE },
{ "", ENTIRE_THREAD_TRUE },
{ 0, 0 } } },
{ NOTMUCH_OPT_INT, &params.part, "part", 'p', 0 },
{ NOTMUCH_OPT_BOOLEAN, &params.crypto.decrypt, "decrypt", 'd', 0 },
{ NOTMUCH_OPT_BOOLEAN, &params.crypto.verify, "verify", 'v', 0 },
{ NOTMUCH_OPT_BOOLEAN, &params.output_body, "body", 'b', 0 },
{ 0, 0, 0, 0, 0 }
};
opt_index = parse_arguments (argc, argv, options, 1);
if (opt_index < 0) {
/* diagnostics already printed */
return 1;
}
/* decryption implies verification */
if (params.crypto.decrypt)
params.crypto.verify = TRUE;
if (format_sel == NOTMUCH_FORMAT_NOT_SPECIFIED) {
/* if part was requested and format was not specified, use format=raw */
if (params.part >= 0)
format_sel = NOTMUCH_FORMAT_RAW;
else
format_sel = NOTMUCH_FORMAT_TEXT;
}
switch (format_sel) {
case NOTMUCH_FORMAT_JSON:
format = &format_json;
break;
case NOTMUCH_FORMAT_TEXT:
format = &format_text;
break;
case NOTMUCH_FORMAT_SEXP:
format = &format_sexp;
break;
case NOTMUCH_FORMAT_MBOX:
if (params.part > 0) {
fprintf (stderr, "Error: specifying parts is incompatible with mbox output format.\n");
return 1;
}
format = &format_mbox;
break;
case NOTMUCH_FORMAT_RAW:
format = &format_raw;
/* If --format=raw specified without specifying part, we can only
* output single message, so set part=0 */
if (params.part < 0)
params.part = 0;
params.raw = TRUE;
break;
}
notmuch_exit_if_unsupported_format ();
/* Default is entire-thread = FALSE except for format=json and
* format=sexp. */
if (entire_thread == ENTIRE_THREAD_DEFAULT) {
if (format == &format_json || format == &format_sexp)
entire_thread = ENTIRE_THREAD_TRUE;
else
entire_thread = ENTIRE_THREAD_FALSE;
}
if (!params.output_body) {
if (params.part > 0) {
fprintf (stderr, "Warning: --body=false is incompatible with --part > 0. Disabling.\n");
params.output_body = TRUE;
} else {
if (format != &format_json && format != &format_sexp)
fprintf (stderr,
"Warning: --body=false only implemented for format=json and format=sexp\n");
}
}
if (entire_thread == ENTIRE_THREAD_TRUE)
params.entire_thread = TRUE;
else
params.entire_thread = FALSE;
config = notmuch_config_open (ctx, NULL, NULL);
if (config == NULL)
return 1;
query_string = query_string_from_args (ctx, argc-opt_index, argv+opt_index);
if (query_string == NULL) {
fprintf (stderr, "Out of memory\n");
return 1;
}
if (*query_string == '\0') {
fprintf (stderr, "Error: notmuch show requires at least one search term.\n");
return 1;
}
if (notmuch_database_open (notmuch_config_get_database_path (config),
NOTMUCH_DATABASE_MODE_READ_ONLY, &notmuch))
return 1;
query = notmuch_query_create (notmuch, query_string);
if (query == NULL) {
fprintf (stderr, "Out of memory\n");
return 1;
}
/* Create structure printer. */
sprinter = format->new_sprinter(ctx, stdout);
/* If a single message is requested we do not use search_excludes. */
if (params.part >= 0)
ret = do_show_single (ctx, query, format, sprinter, &params);
else {
/* We always apply set the exclude flag. The
* exclude=true|false option controls whether or not we return
* threads that only match in an excluded message */
const char **search_exclude_tags;
size_t search_exclude_tags_length;
unsigned int i;
search_exclude_tags = notmuch_config_get_search_exclude_tags
(config, &search_exclude_tags_length);
for (i = 0; i < search_exclude_tags_length; i++)
notmuch_query_add_tag_exclude (query, search_exclude_tags[i]);
if (exclude == EXCLUDE_FALSE) {
notmuch_query_set_omit_excluded (query, FALSE);
params.omit_excluded = FALSE;
}
ret = do_show (ctx, query, format, sprinter, &params);
}
notmuch_crypto_cleanup (&params.crypto);
notmuch_query_destroy (query);
notmuch_database_destroy (notmuch);
return ret;
}
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