/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors: Jeffrey Stedfast <fejj@helixcode.com>
*
* Copyright 2000 Helix Code, Inc. (www.helixcode.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 <gtk/gtk.h>
#include "camel-imap-utils.h"
#include "string-utils.h"
#include <e-sexp.h>
#include "camel/camel-folder-summary.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:
* @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 (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) {
/* get the folder name */
word = imap_next_word (word);
*folder = imap_parse_astring (&word, &len);
return *folder != NULL;
}
return TRUE;
}
static ESExpResult *
func_and (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
GList **list = data;
ESExpResult *r;
d(fprintf (stderr, "in AND func (argc = %d)\n", argc));
if (argc > 0) {
char **strings;
int i;
strings = g_new (char*, argc+1);
strings[argc] = NULL;
for (i = 0; i < argc; i++) {
GList *list_head = *list;
d(fprintf (stderr, "\tAND func: %s\n", (*list) ? (char *) (*list)->data : "(null)"));
strings[argc - (i+1)] = (*list) ? (*list)->data : g_strdup ("");
*list = g_list_remove_link (*list, *list);
g_list_free_1 (list_head);
}
*list = g_list_prepend (*list, g_strjoinv (" ", strings));
d(fprintf (stderr, "%s\n", (char *) (*list)->data));
for (i = 0 ; i < argc; i ++)
g_free (strings[i]);
g_free (strings);
}
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_or (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
GList **list = data;
ESExpResult *r;
d(fprintf (stderr, "in OR func (argc = %d)\n", argc));
if (argc == 2 && (*list)->data && (*list)->next && (*list)->next->data) {
char **strings;
int i;
strings = g_new (char*, argc+2);
strings[0] = g_strdup ("OR");
strings[argc+2 - 1] = NULL;
for (i = 0; i < 2; i++) {
GList *list_head = *list;
d(fprintf (stderr, "\tOR func: %s\n", (*list) ? (char *) (*list)->data : "(null)"));
strings[argc - i] = (*list) ? (*list)->data : g_strdup ("");
*list = g_list_remove_link (*list, *list);
g_list_free_1 (list_head);
}
*list = g_list_prepend (*list, g_strjoinv (" ", strings));
d(fprintf (stderr, "%s\n", (char *) (*list)->data));
for (i = 0 ; i < argc + 2; i ++)
g_free (strings[i]);
g_free (strings);
}
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_not (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
GList **list = data;
ESExpResult *r;
d(fprintf (stderr, "in NOT func\n"));
/* just replace the head of the list with the NOT of it. */
if (argc > 0) {
char *term = (*list)->data;
(*list)->data = g_strdup_printf ("NOT %s", term);
d(fprintf (stderr, "%s\n", (char *) (*list)->data));
g_free (term);
}
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static char *tz_months [] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
static char *
format_date (time_t time, int offset)
{
struct tm tm;
time += ((offset / 100) * (60*60)) + (offset % 100)*60;
d(printf("converting date %s", ctime (&time)));
memcpy (&tm, gmtime (&time), sizeof (tm));
return g_strdup_printf ("%d-%s-%04d",
tm.tm_mday, tz_months[tm.tm_mon],
tm.tm_year + 1900);
}
static ESExpResult *
func_lt (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
GList **list = data;
char *type = (*list)->data;
time_t date = (time_t) (argv[1])->value.number;
ESExpResult *r;
d(fprintf (stderr, "in less-than func: (%d) (%s) (%d)\n", argc, type, (int) date));
if (argc > 0) {
char *string, *date_str;
date_str = format_date (date, 0);
if (!strcmp ("SENT", type)) {
string = g_strdup_printf ("SENTBEFORE \"%s\"", date_str);
} else {
string = g_strdup_printf ("BEFORE \"%s\"", date_str);
}
(*list)->data = string;
g_free (type);
}
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_gt (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
GList **list = data;
char *type = (*list)->data;
time_t date = (time_t) (argv[1])->value.number;
ESExpResult *r;
d(fprintf (stderr, "in greater-than func: (%d) (%s) (%d)\n", argc, type, (int) date));
if (argc > 0) {
char *string, *date_str;
date_str = format_date (date, 0);
if (!strcmp ("SENT", type)) {
string = g_strdup_printf ("SENTSINCE \"%s\"", date_str);
} else {
string = g_strdup_printf ("SINCE \"%s\"", date_str);
}
(*list)->data = string;
g_free (type);
}
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_eq (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
GList **list = data;
char *type = (*list)->data;
time_t date = (time_t) (argv[1])->value.number;
ESExpResult *r;
d(fprintf (stderr, "in equal-to func: (%d) (%s) (%d)\n", argc, type, (int) date));
if (argc > 0) {
char *string, *date_str;
date_str = format_date (date, 0);
if (!strcmp ("SENT", type)) {
string = g_strdup_printf ("SENTON \"%s\"", date_str);
} else {
string = g_strdup_printf ("ON \"%s\"", date_str);
}
(*list)->data = string;
g_free (type);
}
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_match_all (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
/* match-all doesn't have a IMAP equiv */
ESExpResult *r;
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_body_contains (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
GList **list = data;
char *value = (*argv)->value.string;
ESExpResult *r;
if (argc > 0) {
char *string;
string = g_strdup_printf ("BODY \"%s\"", value);
*list = g_list_prepend (*list, string);
}
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_header_contains (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
GList **list = data;
char *header = (argv[0])->value.string;
char *match = (argv[1])->value.string;
ESExpResult *r;
if (argc == 2) {
char *string;
string = g_strdup_printf ("HEADER %s \"%s\"", header, match);
*list = g_list_prepend (*list, string);
}
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_user_tag (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
/* FIXME: what do I do here? */
ESExpResult *r;
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_user_flag (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
/* FIXME: what do I do here? */
ESExpResult *r;
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_get_sent_date (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
GList **list = data;
ESExpResult *r;
*list = g_list_prepend (*list, g_strdup ("SENT"));
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_get_received_date (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
GList **list = data;
ESExpResult *r;
*list = g_list_prepend (*list, g_strdup ("RECEIVED"));
r = e_sexp_result_new (ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
func_get_current_date (struct _ESExp *f, int argc, struct _ESExpResult **argv, void *data)
{
ESExpResult *r;
r = e_sexp_result_new (ESEXP_RES_INT);
r->value.number = time (NULL);
return r;
}
/* builtin functions */
static struct {
char *name;
ESExpFunc *func;
int type; /* set to 1 if a function can perform shortcut evaluation, or
doesn't execute everything, 0 otherwise */
} symbols[] = {
{ "and", (ESExpFunc *) func_and, 0 },
{ "or", (ESExpFunc *) func_or, 0 },
{ "not", (ESExpFunc *) func_not, 0 },
{ "<", (ESExpFunc *) func_lt, 0 },
{ ">", (ESExpFunc *) func_gt, 0 },
{ "=", (ESExpFunc *) func_eq, 0 },
{ "match-all", (ESExpFunc *) func_match_all, 0 },
{ "body-contains", (ESExpFunc *) func_body_contains, 0 },
{ "header-contains", (ESExpFunc *) func_header_contains, 0 },
{ "user-tag", (ESExpFunc *) func_user_tag, 1 },
{ "user-flag", (ESExpFunc *) func_user_flag, 1 },
{ "get-sent-date", (ESExpFunc *) func_get_sent_date, 1 },
{ "get-received-date", (ESExpFunc *) func_get_received_date, 1 },
{ "get-current-date", (ESExpFunc *) func_get_current_date, 1 }
};
char *
imap_translate_sexp (const char *expression)
{
ESExp *sexp;
ESExpResult *r;
gchar *retval;
GList *list = NULL;
int i;
sexp = e_sexp_new ();
for (i = 0; i < sizeof (symbols) / sizeof (symbols[0]); i++) {
if (symbols[i].type == 1) {
e_sexp_add_ifunction (sexp, 0, symbols[i].name,
(ESExpIFunc *)symbols[i].func, &list);
} else {
e_sexp_add_function (sexp, 0, symbols[i].name,
symbols[i].func, &list);
}
}
e_sexp_input_text (sexp, expression, strlen (expression));
e_sexp_parse (sexp);
r = e_sexp_eval (sexp);
gtk_object_unref (GTK_OBJECT (sexp));
e_sexp_result_free (r);
if (list->next) {
g_warning ("conversion to IMAP SEARCH string failed");
retval = NULL;
g_list_foreach (list, (GFunc)g_free, NULL);
} else {
retval = list->data;
}
g_list_free (list);
return retval;
}
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 (const char *flag_list)
{
guint32 flags = 0;
int len;
if (*flag_list++ != '(')
return 0;
while (*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;
flag_list += len;
if (*flag_list == ' ')
flag_list++;
}
return flags;
}
/**
* imap_parse_nstring:
* @str_p: a pointer to a string
* @len: a pointer to an int to return the length in
*
* This parses an "nstring" (NIL, a quoted string, or a literal)
* starting at *@str_p. On success, *@str_p will point to the first
* character after the end of the nstring, 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_nstring (char **str_p, int *len)
{
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);
while (*str && *str != '"') {
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 (!g_strncasecmp (str, "nil", 3)) {
*str_p += 3;
*len = 0;
return NULL;
} else {
*str_p = NULL;
return NULL;
}
}
/**
* imap_parse_astring:
* @str_p: a pointer to a string
* @len: a pointer to an int to return the length in
*
* This parses an "astring" (an atom, a quoted string, or a literal)
* starting at *@str_p. On success, *@str_p will point to the first
* character after the end of the astring, 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 no string
* was parsed. (In this case, *@str_p will also be %NULL.)
**/
char *
imap_parse_astring (char **str_p, int *len)
{
char *p;
if (**str_p == '{' || **str_p == '"')
return imap_parse_nstring (str_p, len);
p = *str_p;
while (isascii ((unsigned char)*p) &&
!strchr ("(){ \"\\%*", *p))
p++;
*len = p - *str_p;
p = g_strndup (*str_p, *len);
*str_p += *len;
return p;
}
