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/*
* Copyright (C) 1996-2002 Michael R. Elkins <me@mutt.org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include "mutt.h"
#include "mutt_regex.h"
#include "mutt_curses.h"
#include "mutt_idna.h"
#include <string.h>
#include <ctype.h>
ADDRESS *mutt_lookup_alias (const char *s)
{
ALIAS *t = Aliases;
for (; t; t = t->next)
if (!mutt_strcasecmp (s, t->name))
return (t->addr);
return (NULL); /* no such alias */
}
static ADDRESS *mutt_expand_aliases_r (ADDRESS *a, LIST **expn)
{
ADDRESS *head = NULL, *last = NULL, *t, *w;
LIST *u;
char i;
const char *fqdn;
while (a)
{
if (!a->group && !a->personal && a->mailbox && strchr (a->mailbox, '@') == NULL)
{
t = mutt_lookup_alias (a->mailbox);
if (t)
{
i = 0;
for (u = *expn; u; u = u->next)
{
if (mutt_strcmp (a->mailbox, u->data) == 0) /* alias already found */
{
dprint (1, (debugfile, "mutt_expand_aliases_r(): loop in alias found for '%s'\n", a->mailbox));
i = 1;
break;
}
}
if (!i)
{
u = safe_malloc (sizeof (LIST));
u->data = safe_strdup (a->mailbox);
u->next = *expn;
*expn = u;
w = rfc822_cpy_adr (t, 0);
w = mutt_expand_aliases_r (w, expn);
if (head)
last->next = w;
else
head = last = w;
while (last && last->next)
last = last->next;
}
t = a;
a = a->next;
t->next = NULL;
rfc822_free_address (&t);
continue;
}
else
{
struct passwd *pw = getpwnam (a->mailbox);
if (pw)
{
char namebuf[STRING];
mutt_gecos_name (namebuf, sizeof (namebuf), pw);
mutt_str_replace (&a->personal, namebuf);
#ifdef EXACT_ADDRESS
FREE (&a->val);
#endif
}
}
}
if (head)
{
last->next = a;
last = last->next;
}
else
head = last = a;
a = a->next;
last->next = NULL;
}
if (option (OPTUSEDOMAIN) && (fqdn = mutt_fqdn(1)))
{
/* now qualify all local addresses */
rfc822_qualify (head, fqdn);
}
return (head);
}
ADDRESS *mutt_expand_aliases (ADDRESS *a)
{
ADDRESS *t;
LIST *expn = NULL; /* previously expanded aliases to avoid loops */
t = mutt_expand_aliases_r (a, &expn);
mutt_free_list (&expn);
return (mutt_remove_duplicates (t));
}
void mutt_expand_aliases_env (ENVELOPE *env)
{
env->from = mutt_expand_aliases (env->from);
env->to = mutt_expand_aliases (env->to);
env->cc = mutt_expand_aliases (env->cc);
env->bcc = mutt_expand_aliases (env->bcc);
env->reply_to = mutt_expand_aliases (env->reply_to);
env->mail_followup_to = mutt_expand_aliases (env->mail_followup_to);
}
/*
* if someone has an address like
* From: Michael `/bin/rm -f ~` Elkins <me@mutt.org>
* and the user creates an alias for this, Mutt could wind up executing
* the backticks because it writes aliases like
* alias me Michael `/bin/rm -f ~` Elkins <me@mutt.org>
* To avoid this problem, use a backslash (\) to quote any backticks. We also
* need to quote backslashes as well, since you could defeat the above by
* doing
* From: Michael \`/bin/rm -f ~\` Elkins <me@mutt.org>
* since that would get aliased as
* alias me Michael \\`/bin/rm -f ~\\` Elkins <me@mutt.org>
* which still gets evaluated because the double backslash is not a quote.
*
* Additionally, we need to quote ' and " characters - otherwise, mutt will
* interpret them on the wrong parsing step.
*
* $ wants to be quoted since it may indicate the start of an environment
* variable.
*/
static void write_safe_address (FILE *fp, char *s)
{
while (*s)
{
if (*s == '\\' || *s == '`' || *s == '\'' || *s == '"'
|| *s == '$')
fputc ('\\', fp);
fputc (*s, fp);
s++;
}
}
ADDRESS *mutt_get_address (ENVELOPE *env, char **pfxp)
{
ADDRESS *adr;
char *pfx = NULL;
if (mutt_addr_is_user (env->from))
{
if (env->to && !mutt_is_mail_list (env->to))
{
pfx = "To";
adr = env->to;
}
else
{
pfx = "Cc";
adr = env->cc;
}
}
else if (env->reply_to && !mutt_is_mail_list (env->reply_to))
{
pfx = "Reply-To";
adr = env->reply_to;
}
else
{
adr = env->from;
pfx = "From";
}
if (pfxp) *pfxp = pfx;
return adr;
}
static void recode_buf (char *buf, size_t buflen)
{
char *s;
if (!ConfigCharset || !*ConfigCharset || !Charset)
return;
s = safe_strdup (buf);
if (!s)
return;
if (mutt_convert_string (&s, Charset, ConfigCharset, 0) == 0)
strfcpy (buf, s, buflen);
FREE(&s);
}
void mutt_create_alias (ENVELOPE *cur, ADDRESS *iadr)
{
ALIAS *new, *t;
char buf[LONG_STRING], tmp[LONG_STRING], prompt[SHORT_STRING], *pc;
char *err = NULL;
char fixed[LONG_STRING];
FILE *rc;
ADDRESS *adr = NULL;
if (cur)
{
adr = mutt_get_address (cur, NULL);
}
else if (iadr)
{
adr = iadr;
}
if (adr && adr->mailbox)
{
strfcpy (tmp, adr->mailbox, sizeof (tmp));
if ((pc = strchr (tmp, '@')))
*pc = 0;
}
else
tmp[0] = '\0';
/* Don't suggest a bad alias name in the event of a strange local part. */
mutt_check_alias_name (tmp, buf, sizeof (buf));
retry_name:
/* add a new alias */
if (mutt_get_field (_("Alias as: "), buf, sizeof (buf), 0) != 0 || !buf[0])
return;
/* check to see if the user already has an alias defined */
if (mutt_lookup_alias (buf))
{
mutt_error _("You already have an alias defined with that name!");
return;
}
if (mutt_check_alias_name (buf, fixed, sizeof (fixed)))
{
switch (mutt_yesorno (_("Warning: This alias name may not work. Fix it?"), M_YES))
{
case M_YES:
strfcpy (buf, fixed, sizeof (buf));
goto retry_name;
case -1:
return;
}
}
new = safe_calloc (1, sizeof (ALIAS));
new->self = new;
new->name = safe_strdup (buf);
mutt_addrlist_to_local (adr);
if (adr)
strfcpy (buf, adr->mailbox, sizeof (buf));
else
buf[0] = 0;
mutt_addrlist_to_idna (adr, NULL);
do
{
if (mutt_get_field (_("Address: "), buf, sizeof (buf), 0) != 0 || !buf[0])
{
mutt_free_alias (&new);
return;
}
if((new->addr = rfc822_parse_adrlist (new->addr, buf)) == NULL)
BEEP ();
if (mutt_addrlist_to_idna (new->addr, &err))
{
mutt_error (_("Error: '%s' is a bad IDN."), err);
mutt_sleep (2);
continue;
}
}
while(new->addr == NULL);
if (adr && adr->personal && !mutt_is_mail_list (adr))
strfcpy (buf, adr->personal, sizeof (buf));
else
buf[0] = 0;
if (mutt_get_field (_("Personal name: "), buf, sizeof (buf), 0) != 0)
{
mutt_free_alias (&new);
return;
}
new->addr->personal = safe_strdup (buf);
buf[0] = 0;
rfc822_write_address (buf, sizeof (buf), new->addr, 1);
snprintf (prompt, sizeof (prompt), _("[%s = %s] Accept?"), new->name, buf);
if (mutt_yesorno (prompt, M_YES) != M_YES)
{
mutt_free_alias (&new);
return;
}
mutt_alias_add_reverse (new);
if ((t = Aliases))
{
while (t->next)
t = t->next;
t->next = new;
}
else
Aliases = new;
strfcpy (buf, NONULL (AliasFile), sizeof (buf));
if (mutt_get_field (_("Save to file: "), buf, sizeof (buf), M_FILE) != 0)
return;
mutt_expand_path (buf, sizeof (buf));
if ((rc = fopen (buf, "a+")))
{
/* terminate existing file with \n if necessary */
if (fseek (rc, 0, SEEK_END))
goto fseek_err;
if (ftell(rc) > 0)
{
if (fseek (rc, -1, SEEK_CUR) < 0)
goto fseek_err;
if (fread(buf, 1, 1, rc) != 1)
{
mutt_perror (_("Error reading alias file"));
safe_fclose (&rc);
return;
}
if (fseek (rc, 0, SEEK_END) < 0)
goto fseek_err;
if (buf[0] != '\n')
fputc ('\n', rc);
}
if (mutt_check_alias_name (new->name, NULL, 0))
mutt_quote_filename (buf, sizeof (buf), new->name);
else
strfcpy (buf, new->name, sizeof (buf));
recode_buf (buf, sizeof (buf));
fprintf (rc, "alias %s ", buf);
buf[0] = 0;
rfc822_write_address (buf, sizeof (buf), new->addr, 0);
recode_buf (buf, sizeof (buf));
write_safe_address (rc, buf);
fputc ('\n', rc);
safe_fclose (&rc);
mutt_message _("Alias added.");
}
else
mutt_perror (buf);
return;
fseek_err:
mutt_perror (_("Error seeking in alias file"));
safe_fclose (&rc);
return;
}
/*
* Sanity-check an alias name: Only characters which are non-special to both
* the RFC 822 and the mutt configuration parser are permitted.
*/
int mutt_check_alias_name (const char *s, char *dest, size_t destlen)
{
wchar_t wc;
mbstate_t mb;
size_t l;
int rv = 0, bad = 0, dry = !dest || !destlen;
memset (&mb, 0, sizeof (mbstate_t));
if (!dry)
destlen--;
for (; s && *s && (dry || destlen) &&
(l = mbrtowc (&wc, s, MB_CUR_MAX, &mb)) != 0;
s += l, destlen -= l)
{
bad = l == (size_t)(-1) || l == (size_t)(-2); /* conversion error */
bad = bad || (!dry && l > destlen); /* too few room for mb char */
if (l == 1)
bad = bad || (strchr ("-_+=.", *s) == NULL && !iswalnum (wc));
else
bad = bad || !iswalnum (wc);
if (bad)
{
if (dry)
return -1;
*dest++ = '_';
rv = -1;
}
else if (!dry)
{
memcpy (dest, s, l);
dest += l;
}
}
if (!dry)
*dest = 0;
return rv;
}
/*
* This routine looks to see if the user has an alias defined for the given
* address.
*/
ADDRESS *alias_reverse_lookup (ADDRESS *a)
{
if (!a || !a->mailbox)
return NULL;
return hash_find (ReverseAlias, a->mailbox);
}
void mutt_alias_add_reverse (ALIAS *t)
{
ADDRESS *ap;
if (!t)
return;
for (ap = t->addr; ap; ap = ap->next)
{
if (!ap->group && ap->mailbox)
hash_insert (ReverseAlias, ap->mailbox, ap, 1);
}
}
void mutt_alias_delete_reverse (ALIAS *t)
{
ADDRESS *ap;
if (!t)
return;
for (ap = t->addr; ap; ap = ap->next)
{
if (!ap->group && ap->mailbox)
hash_delete (ReverseAlias, ap->mailbox, ap, NULL);
}
}
/* alias_complete() -- alias completion routine
*
* given a partial alias, this routine attempts to fill in the alias
* from the alias list as much as possible. if given empty search string
* or found nothing, present all aliases
*/
int mutt_alias_complete (char *s, size_t buflen)
{
ALIAS *a = Aliases;
ALIAS *a_list = NULL, *a_cur = NULL;
char bestname[HUGE_STRING];
int i;
#ifndef min
#define min(a,b) ((a<b)?a:b)
#endif
if (s[0] != 0) /* avoid empty string as strstr argument */
{
memset (bestname, 0, sizeof (bestname));
while (a)
{
if (a->name && strstr (a->name, s) == a->name)
{
if (!bestname[0]) /* init */
strfcpy (bestname, a->name,
min (mutt_strlen (a->name) + 1, sizeof (bestname)));
else
{
for (i = 0 ; a->name[i] && a->name[i] == bestname[i] ; i++)
;
bestname[i] = 0;
}
}
a = a->next;
}
if (bestname[0] != 0)
{
if (mutt_strcmp (bestname, s) != 0)
{
/* we are adding something to the completion */
strfcpy (s, bestname, mutt_strlen (bestname) + 1);
return 1;
}
/* build alias list and show it */
a = Aliases;
while (a)
{
if (a->name && (strstr (a->name, s) == a->name))
{
if (!a_list) /* init */
a_cur = a_list = (ALIAS *) safe_malloc (sizeof (ALIAS));
else
{
a_cur->next = (ALIAS *) safe_malloc (sizeof (ALIAS));
a_cur = a_cur->next;
}
memcpy (a_cur, a, sizeof (ALIAS));
a_cur->next = NULL;
}
a = a->next;
}
}
}
bestname[0] = 0;
mutt_alias_menu (bestname, sizeof(bestname), a_list ? a_list : Aliases);
if (bestname[0] != 0)
strfcpy (s, bestname, buflen);
/* free the alias list */
while (a_list)
{
a_cur = a_list;
a_list = a_list->next;
FREE (&a_cur);
}
/* remove any aliases marked for deletion */
a_list = NULL;
for (a_cur = Aliases; a_cur;)
{
if (a_cur->del)
{
if (a_list)
a_list->next = a_cur->next;
else
Aliases = a_cur->next;
a_cur->next = NULL;
mutt_free_alias (&a_cur);
if (a_list)
a_cur = a_list;
else
a_cur = Aliases;
}
else
{
a_list = a_cur;
a_cur = a_cur->next;
}
}
return 0;
}
static int string_is_address(const char *str, const char *u, const char *d)
{
char buf[LONG_STRING];
snprintf(buf, sizeof(buf), "%s@%s", NONULL(u), NONULL(d));
if (ascii_strcasecmp(str, buf) == 0)
return 1;
return 0;
}
/* returns TRUE if the given address belongs to the user. */
int mutt_addr_is_user (ADDRESS *addr)
{
const char *fqdn;
/* NULL address is assumed to be the user. */
if (!addr)
{
dprint (5, (debugfile, "mutt_addr_is_user: yes, NULL address\n"));
return 1;
}
if (!addr->mailbox)
{
dprint (5, (debugfile, "mutt_addr_is_user: no, no mailbox\n"));
return 0;
}
if (ascii_strcasecmp (addr->mailbox, Username) == 0)
{
dprint (5, (debugfile, "mutt_addr_is_user: yes, %s = %s\n", addr->mailbox, Username));
return 1;
}
if (string_is_address(addr->mailbox, Username, Hostname))
{
dprint (5, (debugfile, "mutt_addr_is_user: yes, %s = %s @ %s \n", addr->mailbox, Username, Hostname));
return 1;
}
fqdn = mutt_fqdn (0);
if (string_is_address(addr->mailbox, Username, fqdn))
{
dprint (5, (debugfile, "mutt_addr_is_user: yes, %s = %s @ %s \n", addr->mailbox, Username, NONULL(fqdn)));
return 1;
}
fqdn = mutt_fqdn (1);
if (string_is_address(addr->mailbox, Username, fqdn))
{
dprint (5, (debugfile, "mutt_addr_is_user: yes, %s = %s @ %s \n", addr->mailbox, Username, NONULL(fqdn)));
return 1;
}
if (From && !ascii_strcasecmp (From->mailbox, addr->mailbox))
{
dprint (5, (debugfile, "mutt_addr_is_user: yes, %s = %s\n", addr->mailbox, From->mailbox));
return 1;
}
if (mutt_match_rx_list (addr->mailbox, Alternates))
{
dprint (5, (debugfile, "mutt_addr_is_user: yes, %s matched by alternates.\n", addr->mailbox));
if (mutt_match_rx_list (addr->mailbox, UnAlternates))
dprint (5, (debugfile, "mutt_addr_is_user: but, %s matched by unalternates.\n", addr->mailbox));
else
return 1;
}
dprint (5, (debugfile, "mutt_addr_is_user: no, all failed.\n"));
return 0;
}
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