/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors: Jeffrey Stedfast <fejj@ximian.com>
*
* Copyright 2000 Ximian, Inc. (www.ximian.com)
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
*
*/
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include "camel-imap-utils.h"
#include "camel-imap-summary.h"
#include "camel-imap-store.h"
#include "camel-folder.h"
#define d(x) x
char *
imap_next_word (const char *buf)
{
char *word;
/* skip over current word */
for (word = (char *)buf; *word && *word != ' '; word++);
/* skip over white space */
for ( ; *word && *word == ' '; word++);
return word;
}
/**
* imap_parse_list_response:
* @store: the IMAP store whose list response we're parsing
* @buf: the LIST or LSUB response
* @flags: a pointer to a variable to store the flags in, or %NULL
* @sep: a pointer to a variable to store the hierarchy separator in, or %NULL
* @folder: a pointer to a variable to store the folder name in, or %NULL
*
* Parses a LIST or LSUB response and returns the desired parts of it.
* If @folder is non-%NULL, its value must be freed by the caller.
*
* Return value: whether or not the response was successfully parsed.
**/
gboolean
imap_parse_list_response (CamelImapStore *store, const char *buf, int *flags, char *sep, char **folder)
{
char *word;
int len;
if (*buf != '*')
return FALSE;
word = imap_next_word (buf);
if (g_strncasecmp (word, "LIST", 4) && g_strncasecmp (word, "LSUB", 4))
return FALSE;
/* get the flags */
word = imap_next_word (word);
if (*word != '(')
return FALSE;
if (flags)
*flags = 0;
word++;
while (*word != ')') {
len = strcspn (word, " )");
if (flags) {
if (!g_strncasecmp (word, "\\NoInferiors", len))
*flags |= IMAP_LIST_FLAG_NOINFERIORS;
else if (!g_strncasecmp (word, "\\NoSelect", len))
*flags |= IMAP_LIST_FLAG_NOSELECT;
else if (!g_strncasecmp (word, "\\Marked", len))
*flags |= IMAP_LIST_FLAG_MARKED;
else if (!g_strncasecmp (word, "\\Unmarked", len))
*flags |= IMAP_LIST_FLAG_UNMARKED;
}
word += len;
while (*word == ' ')
word++;
}
/* get the directory separator */
word = imap_next_word (word);
if (!strncmp (word, "NIL", 3)) {
if (sep)
*sep = '\0';
} else if (*word++ == '"') {
if (*word == '\\')
word++;
if (sep)
*sep = *word;
word++;
if (*word++ != '"')
return FALSE;
} else
return FALSE;
if (folder) {
char *real_name;
int n_len;
/* get the folder name */
word = imap_next_word (word);
real_name = imap_parse_astring (&word, &len);
n_len = strlen (store->namespace);
if (!strncmp (real_name, store->namespace, n_len))
*folder = g_strdup (real_name + n_len);
else if (!g_strcasecmp (real_name, "INBOX")) {
*folder = g_strdup (real_name);
} else {
g_warning ("IMAP folder name \"%s\" does not begin with \"%s\"", real_name, store->namespace);
*folder = g_strdup (real_name);
}
g_free (real_name);
return *folder != NULL;
}
return TRUE;
}
char *
imap_create_flag_list (guint32 flags)
{
GString *gstr;
char *flag_list;
gstr = g_string_new ("(");
if (flags & CAMEL_MESSAGE_ANSWERED)
g_string_append (gstr, "\\Answered ");
if (flags & CAMEL_MESSAGE_DELETED)
g_string_append (gstr, "\\Deleted ");
if (flags & CAMEL_MESSAGE_DRAFT)
g_string_append (gstr, "\\Draft ");
if (flags & CAMEL_MESSAGE_FLAGGED)
g_string_append (gstr, "\\Flagged ");
if (flags & CAMEL_MESSAGE_SEEN)
g_string_append (gstr, "\\Seen ");
if (gstr->str[gstr->len - 1] == ' ')
gstr->str[gstr->len - 1] = ')';
else
g_string_append_c (gstr, ')');
flag_list = gstr->str;
g_string_free (gstr, FALSE);
return flag_list;
}
guint32
imap_parse_flag_list (char **flag_list_p)
{
char *flag_list = *flag_list_p;
guint32 flags = 0;
int len;
if (*flag_list++ != '(') {
*flag_list_p = NULL;
return 0;
}
while (*flag_list && *flag_list != ')') {
len = strcspn (flag_list, " )");
if (!g_strncasecmp (flag_list, "\\Answered", len))
flags |= CAMEL_MESSAGE_ANSWERED;
else if (!g_strncasecmp (flag_list, "\\Deleted", len))
flags |= CAMEL_MESSAGE_DELETED;
else if (!g_strncasecmp (flag_list, "\\Draft", len))
flags |= CAMEL_MESSAGE_DRAFT;
else if (!g_strncasecmp (flag_list, "\\Flagged", len))
flags |= CAMEL_MESSAGE_FLAGGED;
else if (!g_strncasecmp (flag_list, "\\Seen", len))
flags |= CAMEL_MESSAGE_SEEN;
else if (!g_strncasecmp (flag_list, "\\Recent", len))
flags |= CAMEL_IMAP_MESSAGE_RECENT;
flag_list += len;
if (*flag_list == ' ')
flag_list++;
}
if (*flag_list++ != ')') {
*flag_list_p = NULL;
return 0;
}
*flag_list_p = flag_list;
return flags;
}
static char imap_atom_specials[128] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0,
};
#define imap_is_atom_char(ch) (isprint (ch) && !imap_atom_specials[ch])
/**
* imap_parse_string_generic:
* @str_p: a pointer to a string
* @len: a pointer to an int to return the length in
* @type: type of string (#IMAP_STRING, #IMAP_ASTRING, or #IMAP_NSTRING)
* to parse.
*
* This parses an IMAP "string" (quoted string or literal), "nstring"
* (NIL or string), or "astring" (atom or string) starting at *@str_p.
* On success, *@str_p will point to the first character after the end
* of the string, and *@len will contain the length of the returned
* string. On failure, *@str_p will be set to %NULL.
*
* This assumes that the string is in the form returned by
* camel_imap_command(): that line breaks are indicated by LF rather
* than CRLF.
*
* Return value: the parsed string, or %NULL if a NIL or no string
* was parsed. (In the former case, *@str_p will be %NULL; in the
* latter, it will point to the character after the NIL.)
**/
char *
imap_parse_string_generic (char **str_p, int *len, int type)
{
char *str = *str_p;
char *out;
if (!str)
return NULL;
else if (*str == '"') {
char *p;
int size;
str++;
size = strcspn (str, "\"") + 1;
p = out = g_malloc (size);
/* a quoted string cannot be broken into multiple lines */
while (*str && *str != '"' && *str != '\n') {
if (*str == '\\')
str++;
*p++ = *str++;
if (p - out == size) {
out = g_realloc (out, size * 2);
p = out + size;
size *= 2;
}
}
if (*str != '"') {
*str_p = NULL;
g_free (out);
return NULL;
}
*p = '\0';
*str_p = str + 1;
*len = strlen (out);
return out;
} else if (*str == '{') {
*len = strtoul (str + 1, (char **)&str, 10);
if (*str++ != '}' || *str++ != '\n' || strlen (str) < *len) {
*str_p = NULL;
return NULL;
}
out = g_strndup (str, *len);
*str_p = str + *len;
return out;
} else if (type == IMAP_NSTRING && !g_strncasecmp (str, "nil", 3)) {
*str_p += 3;
*len = 0;
return NULL;
} else if (type == IMAP_ASTRING && imap_is_atom_char ((unsigned char)*str)) {
while (imap_is_atom_char ((unsigned char)*str))
str++;
*len = str - *str_p;
str = g_strndup (*str_p, *len);
*str_p += *len;
return str;
} else {
*str_p = NULL;
return NULL;
}
}
static inline void
skip_char (char **str_p, char ch)
{
if (*str_p && **str_p == ch)
*str_p = *str_p + 1;
else
*str_p = NULL;
}
/* Skip atom, string, or number */
static void
skip_asn (char **str_p)
{
char *str = *str_p;
if (!str)
return;
else if (*str == '"') {
while (*++str && *str != '"') {
if (*str == '\\') {
str++;
if (!*str)
break;
}
}
if (*str == '"')
*str_p = str + 1;
else
*str_p = NULL;
} else if (*str == '{') {
unsigned long len;
len = strtoul (str + 1, &str, 10);
if (*str != '}' || *(str + 1) != '\n' ||
strlen (str + 2) < len) {
*str_p = NULL;
return;
}
*str_p = str + 2 + len;
} else {
/* We assume the string is well-formed and don't
* bother making sure it's a valid atom.
*/
while (*str && *str != ')' && *str != ' ')
str++;
*str_p = str;
}
}
void
imap_skip_list (char **str_p)
{
skip_char (str_p, '(');
while (*str_p && **str_p != ')') {
if (**str_p == '(')
imap_skip_list (str_p);
else
skip_asn (str_p);
if (*str_p && **str_p == ' ')
skip_char (str_p, ' ');
}
skip_char (str_p, ')');
}
static void
parse_params (char **parms_p, CamelContentType *type)
{
char *parms = *parms_p, *name, *value;
int len;
if (!g_strncasecmp (parms, "nil", 3)) {
*parms_p += 3;
return;
}
if (*parms++ != '(') {
*parms_p = NULL;
return;
}
while (parms && *parms != ')') {
name = imap_parse_nstring (&parms, &len);
skip_char (&parms, ' ');
value = imap_parse_nstring (&parms, &len);
if (name && value)
header_content_type_set_param (type, name, value);
g_free (name);
g_free (value);
if (parms && *parms == ' ')
parms++;
}
if (!parms || *parms++ != ')') {
*parms_p = NULL;
return;
}
*parms_p = parms;
}
/**
* imap_parse_body:
* @body_p: pointer to the start of an IMAP "body"
* @folder: an imap folder
* @ci: a CamelMessageContentInfo to fill in
*
* This filles in @ci with data from *@body_p. On success *@body_p
* will point to the character after the body. On failure, it will be
* set to %NULL and @ci will be unchanged.
**/
void
imap_parse_body (char **body_p, CamelFolder *folder,
CamelMessageContentInfo *ci)
{
char *body = *body_p;
CamelMessageContentInfo *child;
CamelContentType *type;
int len;
if (*body++ != '(') {
*body_p = NULL;
return;
}
if (*body == '(') {
/* multipart */
GPtrArray *children;
char *subtype;
int i;
/* Parse the child body parts */
children = g_ptr_array_new ();
i = 0;
while (body && *body == '(') {
child = camel_folder_summary_content_info_new (folder->summary);
g_ptr_array_add (children, child);
imap_parse_body (&body, folder, child);
if (!body)
break;
child->parent = ci;
}
skip_char (&body, ' ');
/* Parse the multipart subtype */
subtype = imap_parse_string (&body, &len);
/* If there is a parse error, abort. */
if (!body) {
for (i = 0; i < children->len; i++) {
child = children->pdata[i];
camel_folder_summary_content_info_free (folder->summary, child);
}
g_ptr_array_free (children, TRUE);
*body_p = NULL;
return;
}
g_strdown (subtype);
ci->type = header_content_type_new ("multipart", subtype);
g_free (subtype);
/* Chain the children. */
ci->childs = children->pdata[0];
ci->size = 0;
for (i = 0; i < children->len - 1; i++) {
child = children->pdata[i];
child->next = children->pdata[i + 1];
ci->size += child->size;
}
g_ptr_array_free (children, TRUE);
} else {
/* single part */
char *main_type, *subtype;
char *id, *description, *encoding;
guint32 size;
main_type = imap_parse_string (&body, &len);
skip_char (&body, ' ');
subtype = imap_parse_string (&body, &len);
skip_char (&body, ' ');
if (!body) {
g_free (main_type);
g_free (subtype);
*body_p = NULL;
return;
}
g_strdown (main_type);
g_strdown (subtype);
type = header_content_type_new (main_type, subtype);
g_free (main_type);
g_free (subtype);
parse_params (&body, type);
skip_char (&body, ' ');
id = imap_parse_nstring (&body, &len);
skip_char (&body, ' ');
description = imap_parse_nstring (&body, &len);
skip_char (&body, ' ');
encoding = imap_parse_string (&body, &len);
skip_char (&body, ' ');
if (body)
size = strtoul (body, &body, 10);
child = NULL;
if (header_content_type_is (type, "message", "rfc822")) {
skip_char (&body, ' ');
imap_skip_list (&body); /* envelope */
skip_char (&body, ' ');
child = camel_folder_summary_content_info_new (folder->summary);
imap_parse_body (&body, folder, child);
if (!body)
camel_folder_summary_content_info_free (folder->summary, child);
skip_char (&body, ' ');
if (body)
strtoul (body, &body, 10);
} else if (header_content_type_is (type, "text", "*")) {
if (body)
strtoul (body, &body, 10);
}
if (body) {
ci->type = type;
ci->id = id;
ci->description = description;
ci->encoding = encoding;
ci->size = size;
ci->childs = child;
} else {
header_content_type_unref (type);
g_free (id);
g_free (description);
g_free (encoding);
}
}
if (!body || *body++ != ')') {
*body_p = NULL;
return;
}
*body_p = body;
}
/**
* imap_quote_string:
* @str: the string to quote, which must not contain CR or LF
*
* Return value: an IMAP "quoted" corresponding to the string, which
* the caller must free.
**/
char *
imap_quote_string (const char *str)
{
const char *p;
char *quoted, *q;
int len;
g_assert (strchr (str, '\r') == NULL);
len = strlen (str);
p = str;
while ((p = strpbrk (p, "\"\\"))) {
len++;
p++;
}
quoted = q = g_malloc (len + 3);
*q++ = '"';
for (p = str; *p; ) {
if (strchr ("\"\\", *p))
*q++ = '\\';
*q++ = *p++;
}
*q++ = '"';
*q = '\0';
return quoted;
}
static inline unsigned long
get_summary_uid_numeric (CamelFolderSummary *summary, int index)
{
CamelMessageInfo *info;
unsigned long uid;
info = camel_folder_summary_index (summary, index);
uid = strtoul (camel_message_info_uid (info), NULL, 10);
camel_folder_summary_info_free (summary, info);
return uid;
}
/**
* imap_uid_array_to_set:
* @summary: summary for the folder the UIDs come from
* @uids: a (sorted) array of UIDs
*
* Creates an IMAP "set" covering the listed UIDs and not covering
* any UIDs that are in @summary but not in @uids. It doesn't
* actually require that all (or any) of the UIDs be in @summary.
*
* Return value: the set, which the caller must free with g_free()
**/
char *
imap_uid_array_to_set (CamelFolderSummary *summary, GPtrArray *uids)
{
int ui, si, scount;
unsigned long last_uid, next_summary_uid, this_uid;
gboolean range = FALSE;
GString *gset;
char *set;
g_return_val_if_fail (uids->len > 0, NULL);
gset = g_string_new (uids->pdata[0]);
last_uid = strtoul (uids->pdata[0], NULL, 10);
next_summary_uid = 0;
scount = camel_folder_summary_count (summary);
for (ui = 1, si = 0; ui < uids->len; ui++) {
/* Find the next UID in the summary after the one we
* just wrote out.
*/
for (; last_uid >= next_summary_uid && si < scount; si++)
next_summary_uid = get_summary_uid_numeric (summary, si);
if (last_uid >= next_summary_uid)
next_summary_uid = (unsigned long) -1;
/* Now get the next UID from @uids */
this_uid = strtoul (uids->pdata[ui], NULL, 10);
if (this_uid == next_summary_uid || this_uid == last_uid + 1)
range = TRUE;
else {
if (range) {
g_string_sprintfa (gset, ":%lu", last_uid);
range = FALSE;
}
g_string_sprintfa (gset, ",%lu", this_uid);
}
last_uid = this_uid;
}
if (range)
g_string_sprintfa (gset, ":%lu", last_uid);
set = gset->str;
g_string_free (gset, FALSE);
return set;
}
/**
* imap_uid_set_to_array:
* @summary: summary for the folder the UIDs come from
* @uids: a pointer to the start of an IMAP "set" of UIDs
*
* Fills an array with the UIDs corresponding to @uids and @summary.
* There can be text after the uid set in @uids, which will be
* ignored.
*
* If @uids specifies a range of UIDs that extends outside the range
* of @summary, the function will assume that all of the "missing" UIDs
* do exist.
*
* Return value: the array of uids, which the caller must free with
* imap_uid_array_free(). (Or %NULL if the uid set can't be parsed.)
**/
GPtrArray *
imap_uid_set_to_array (CamelFolderSummary *summary, const char *uids)
{
GPtrArray *arr;
char *p, *q;
unsigned long uid, suid;
int si, scount;
arr = g_ptr_array_new ();
scount = camel_folder_summary_count (summary);
p = (char *)uids;
si = 0;
do {
uid = strtoul (p, &q, 10);
if (p == q)
goto lose;
g_ptr_array_add (arr, g_strndup (p, q - p));
if (*q == ':') {
/* Find the summary entry for the UID after the one
* we just saw.
*/
while (++si < scount) {
suid = get_summary_uid_numeric (summary, si);
if (suid > uid)
break;
}
if (si >= scount)
suid = uid + 1;
uid = strtoul (q + 1, &p, 10);
if (p == q + 1)
goto lose;
/* Add each summary UID until we find one
* larger than the end of the range
*/
while (suid <= uid) {
g_ptr_array_add (arr, g_strdup_printf ("%lu", suid));
if (++si < scount)
suid = get_summary_uid_numeric (summary, si);
else
suid++;
}
} else
p = q;
} while (*p++ == ',');
return arr;
lose:
g_warning ("Invalid uid set %s", uids);
imap_uid_array_free (arr);
return NULL;
}
/**
* imap_uid_array_free:
* @arr: an array returned from imap_uid_set_to_array()
*
* Frees @arr
**/
void
imap_uid_array_free (GPtrArray *arr)
{
int i;
for (i = 0; i < arr->len; i++)
g_free (arr->pdata[i]);
g_ptr_array_free (arr, TRUE);
}
char *
imap_concat (CamelImapStore *imap_store, const char *prefix, const char *suffix)
{
int len;
len = strlen (prefix);
if (len == 0 || prefix[len - 1] == imap_store->dir_sep)
return g_strdup_printf ("%s%s", prefix, suffix);
else
return g_strdup_printf ("%s%c%s", prefix, imap_store->dir_sep, suffix);
}
char *
imap_namespace_concat (CamelImapStore *store, const char *name)
{
if (!name || *name == '\0') {
if (store->namespace)
return g_strdup (store->namespace);
else
return g_strdup ("");
}
if (!g_strcasecmp (name, "INBOX"))
return g_strdup ("INBOX");
if (store->namespace == NULL) {
g_warning ("Trying to concat NULL namespace to \"%s\"!", name);
return g_strdup (name);
}
return imap_concat (store, store->namespace, name);
}
