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Diffstat (limited to 'g10/mailbox.c')
| -rw-r--r-- | g10/mailbox.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/g10/mailbox.c b/g10/mailbox.c deleted file mode 100644 index 64b818f37..000000000 --- a/g10/mailbox.c +++ /dev/null @@ -1,184 +0,0 @@ -/* mailbox.c - Mail address helper functions - * Copyright (C) 1998-2010 Free Software Foundation, Inc. - * Copyright (C) 2014-2015 Werner Koch - * - * This file is part of GnuPG. - * - * GnuPG 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. - * - * GnuPG 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/>. - */ - -#include <config.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> - -#include "gpg.h" -#include "util.h" -#include "main.h" - - -static int -string_count_chr (const char *string, int c) -{ - int count; - - for (count=0; *string; string++ ) - if ( *string == c ) - count++; - return count; -} - - -static int -string_has_ctrl_or_space (const char *string) -{ - for (; *string; string++ ) - if (!(*string & 0x80) && *string <= 0x20) - return 1; - return 0; -} - - -/* Return true if STRING has two consecutive '.' after an '@' - sign. */ -static int -has_dotdot_after_at (const char *string) -{ - string = strchr (string, '@'); - if (!string) - return 0; /* No at-sign. */ - string++; - return !!strstr (string, ".."); -} - - -/* Check whether the string has characters not valid in an RFC-822 - address. To cope with OpenPGP we ignore non-ascii characters - so that for example umlauts are legal in an email address. An - OpenPGP user ID must be utf-8 encoded but there is no strict - requirement for RFC-822. Thus to avoid IDNA encoding we put the - address verbatim as utf-8 into the user ID under the assumption - that mail programs handle IDNA at a lower level and take OpenPGP - user IDs as utf-8. Note that we can't do an utf-8 encoding - checking here because in keygen.c this function is called with the - native encoding and native to utf-8 encoding is only done later. */ -int -has_invalid_email_chars (const char *s) -{ - int at_seen=0; - const char *valid_chars= - "01234567890_-.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; - - for ( ; *s; s++ ) - { - if ( (*s & 0x80) ) - continue; /* We only care about ASCII. */ - if ( *s == '@' ) - at_seen=1; - else if ( !at_seen && !(strchr (valid_chars, *s) - || strchr ("!#$%&'*+/=?^`{|}~", *s))) - return 1; - else if ( at_seen && !strchr( valid_chars, *s ) ) - return 1; - } - return 0; -} - - -/* Check whether NAME represents a valid mailbox according to - RFC822. Returns true if so. */ -int -is_valid_mailbox (const char *name) -{ - return !( !name - || !*name - || has_invalid_email_chars (name) - || string_count_chr (name,'@') != 1 - || *name == '@' - || name[strlen(name)-1] == '@' - || name[strlen(name)-1] == '.' - || strstr (name, "..") ); -} - - -/* Return the mailbox (local-part@domain) form a standard user id. - Caller must free the result. Returns NULL if no valid mailbox was - found (or we are out of memory). */ -char * -mailbox_from_userid (const char *userid) -{ - const char *s, *s_end; - size_t len; - char *result = NULL; - - s = strchr (userid, '<'); - if (s) - { - /* Seems to be a standard user id. */ - s++; - s_end = strchr (s, '>'); - if (s_end && s_end > s) - { - len = s_end - s; - result = xtrymalloc (len + 1); - if (!result) - return NULL; /* Ooops - out of core. */ - strncpy (result, s, len); - result[len] = 0; - /* Apply some basic checks on the address. We do not use - is_valid_mailbox because those checks are too strict. */ - if (string_count_chr (result, '@') != 1 /* Need exactly one '@. */ - || *result == '@' /* local-part missing. */ - || result[len-1] == '@' /* domain missing. */ - || result[len-1] == '.' /* ends with a dot. */ - || string_has_ctrl_or_space (result) - || has_dotdot_after_at (result)) - { - xfree (result); - result = NULL; - errno = EINVAL; - } - } - else - errno = EINVAL; - } - else if (is_valid_mailbox (userid)) - { - /* The entire user id is a mailbox. Return that one. Note that - this fallback method has some restrictions on the valid - syntax of the mailbox. However, those who want weird - addresses should know about it and use the regular <...> - syntax. */ - result = xtrystrdup (userid); - } - else - errno = EINVAL; - - return result; -} - - -/* Check whether UID is a valid standard user id of the form - "Heinrich Heine <[email protected]>" - and return true if this is the case. */ -int -is_valid_user_id (const char *uid) -{ - if (!uid || !*uid) - return 0; - - return 1; -} |