two can be accomplished via the components file).
rather than hardcoding pophost in `mts.conf'.
Check the `mh-tailor' man page for a list of all the available options
- for this file ("masquerade" may be of particular interest, though its
- default value allows the most flexibility. See the discussion of the
- --enable-masquerade configure option below).
+ for this file.
7) Edit the file `mhn.defaults' (installed in the nmh `etc' directory).
This file contains the default profile entries for the nmh command
--enable-debug
Enable debugging support.
---enable-masquerade[='draft_from mmailid username_extension']
- By default, all three masquerade options are enabled.
-
- If this option is disabled, the mts.conf file will contain the
- line "masquerade: " (with no value), which may be manually edited
- later. You may find it convenient to specify a value at
- configure-time, however, so that each time nmh is reinstalled,
- the right value will be there.
-
- See the mh-tailor(5) man page for full documentation of "masquerade:".
-
- This option will likely be removed in a future version of nmh.
-
--enable-pop
Enable client-side support for pop.
$(SED) -e 's,%mts%,$(MTS),' \
-e 's,%mailspool%,$(mailspool),' \
-e 's,%etcdir%,$(sysconfdir),' \
- -e 's,%masquerade%,$(masquerade),' \
-e 's,%smtpservers%,$(smtpservers),' \
< $(srcdir)/etc/mts.conf.in > $@
dnl The old redundant --enable-nmh-debug is deprecated and undocumented.
AS_IF([test x"$enable_nmh_debug" = x"yes"], [enable_debug=yes])
-dnl Allow users to send email from addresses other than their default?
-AC_ARG_ENABLE(masquerade,
- AS_HELP_STRING([--enable-masquerade='draft_from mmailid username_extension'],
- [enable up to 3 types of address masquerading]),
- [AS_IF([test x"$enable_masquerade" = x"yes"],
- [masquerade="draft_from mmailid username_extension"],
- [masquerade="$enable_masquerade"])],
- [masquerade="draft_from mmailid username_extension"])
-AC_SUBST(masquerade)dnl
-
dnl Do you want to disable use of locale functions
AH_TEMPLATE([LOCALE],
[Undefine if you don't want locale features. By default this is defined.])
default smtp servers : ${smtpservers}
default editor : ${editorpath}
default pager : ${pagerpath}
-email address masquerading : ${masquerade}
SASL support : ${sasl_support}
TLS support : ${tls_support}
])])dnl
# query the system for this value (gethostname, etc...).
#localname: foo.bar.com
-# The following directive allows email address masquerading. The string
-# "draft_from mmailid username_extension" will allow all three types.
-masquerade: %masquerade%
-
# Default location of mail drops. If this option is
# set, but empty, the user's home directory is used.
mmdfldir: %mailspool%
The end-of-message delimiter for maildrops.
.RE
.PP
-.BR masquerade:
-.RS 5
-This directive controls three different types of email address masquerading.
-The three possible values, which may be specified in any combination on the
-line, separated by spaces, are \*(lqdraft_from\*(rq, \*(lqmmailid\*(rq, and
-\*(lqusername_extension\*(rq.
-.PP
-\*(lqmmailid\*(rq was the only type of masquerading in the original MH package, and
-apparently stands for \*(lqmasquerade mail identification\*(rq. This type of
-masquerading keys off of the GECOS field of the passwd file. When enabled,
-.B nmh
-will check if the user's pw_gecos field in the passwd file is of the
-form:
-.PP
-.RS 5
-Full Name <fakeusername>
-.RE
-.PP
-If it is, the internal
-.B nmh
-routines that find the username and full name
-of that user will return \*(lqfakeusername\*(rq and \*(lqFull Name\*(rq respectively. This is
-useful if you want the messages you send to always appear to come from the name
-of an MTA alias rather than your actual account name. For instance, many
-organizations set up \*(lqFirst.Last\*(rq sendmail aliases for all users. If this is
-the case, the GECOS field for each user should look like:
-.PP
-.RS 5
-First [Middle] Last <First.Last>
-.RE
-.PP
-\*(lqusername_extension\*(rq, when specified on the \*(lqmasquerade:\*(rq line, allows a second
-type of username masquerading. If the user sets the
-.B $USERNAME_EXTENSION
-environment variable, its value will be appended to the actual login name. For
-instance, if I am \*(lqdan@example.com\*(rq, and I set
-.B $USERNAME_EXTENSION
-to \*(lq\-www\*(rq, my mail will appear to come from \*(lqdan\-www@example.com\*(rq. This is meant
-to interact with qmail's \*(lquser\-extension\*(rq feature, where mail sent to
-.IR user \- string
-will be delivered to
-.IR user .
-Likewise, those using
-versions of sendmail for which \*(lqplussed user\*(rq processing is active can set
-.B $USERNAME_EXTENSION
-to \*(lq+\fIstring\fR\*(rq. These MTA features are useful
-because they allow one to use different email addresses in different situations
-(to aid in automatic mail filtering or in determining where spammers got one's
-address) while only actually having a single account. Note that
-.B $USERNAME_EXTENSION
-is only appended to the username when \fIpost\fR is
-generating \*(lq[Resent\-]From:\*(rq lines and the SMTP envelope
-\*(lqFrom:\*(rq.
-.BR inc ,
-for instance, will not try to read from a maildrop file called \*(lqdan\-www\*(rq (to
-recall the earlier example).
-.PP
-\*(lqdraft_from\*(rq controls the most powerful type of address masquerading. Normally,
-when a user explicitly specifies a \*(lqFrom:\*(rq header in a draft,
-.B nmh
-uses it
-rather than constructing its own. However, to discourage email forgery, the
-SMTP envelope \*(lqFrom:\*(rq and a \*(lqSender:\*(rq header are set to the user's real address.
-When \*(lqdraft_from\*(rq is turned on, though, the envelope \*(lqFrom:\*(rq will use the
-address specified in the draft, and there will be no \*(lqSender:\*(rq header. This is
-useful when a user wants to pretend to be sending mail \*(lqdirectly\*(rq from a remote
-POP3 account, or when remote mail robots incorrectly use the envelope \*(lqFrom:\*(rq in
-preference to the body \*(lqFrom:\*(rq (or refuse to take action when the two don't
-match). Note that the MTA may still reveal the user's real identity (e.g.
-.BR sendmail 's
-\*(lqX\-Authentication\-Warning:\*(rq header).
-.RE
-.PP
.BR maildelivery :
%libdir%/maildelivery
.RS 5
static char adr[BUFSIZ];
-extern boolean username_extension_masquerading; /* defined in mts.c */
-
-
char *
getname (char *addrs)
{
char *
getlocaladdr(void)
{
- int snprintf_return;
- char *username, *domain;
- static char addr[BUFSIZ];
+ char *username;
username = getusername();
- if (username_extension_masquerading) {
- /* mts.conf contains "masquerade:[...]username_extension[...]", so tack
- on the value of the $USERNAME_EXTENSION environment variable, if set,
- to username. */
- char* extension = getenv("USERNAME_EXTENSION");
- static char username_with_extension[BUFSIZ];
-
- if (extension != NULL && *extension != '\0') {
- snprintf_return = snprintf(username_with_extension,
- sizeof(username_with_extension),
- "%s%s", username, extension);
-
- if (snprintf_return < 0 ||
- snprintf_return >= (int) sizeof(username_with_extension))
- adios(NULL, "snprintf() error writing username (%d chars) and"
- " $USERNAME_EXTENSION (%d chars) to array of BUFSIZ (%d)"
- " chars",
- strlen(username), strlen(extension), BUFSIZ);
-
- username = username_with_extension;
- }
- }
-
return username;
-
- domain = LocalName(0);
-
- snprintf_return = snprintf (addr, sizeof(addr), "%s@%s", username, domain);
-
- if (snprintf_return < 0 || snprintf_return >= (int) sizeof(addr))
- adios(NULL, "snprintf() error writing username (%d chars), domain (%d"
- " chars), and 1 separator char to array of BUFSIZ (%d) chars",
- strlen(username), strlen(domain), BUFSIZ);
-
- return addr;
}
static char fullname[BUFSIZ];
static char localmbox[BUFSIZ];
-/* Variables for username masquerading: */
- boolean draft_from_masquerading = FALSE; /* also used from post.c */
-static boolean mmailid_masquerading = FALSE;
- boolean username_extension_masquerading = FALSE; /* " from addrsbr.c */
-static char* masquerade = "";
-
/*
* MTS specific variables
*/
{ "uucplfil", &uucplfil },
{ "mmdelim1", &mmdlm1 },
{ "mmdelim2", &mmdlm2 },
- { "masquerade", &masquerade },
{ "mts", &sm_method },
{ "hostable", &hostable },
{ "sendmail", &sendmail },
Everyone = atoi (everyone);
- if (strstr(masquerade, "draft_from") != NULL)
- draft_from_masquerading = TRUE;
-
- if (strstr(masquerade, "mmailid") != NULL)
- mmailid_masquerading = TRUE;
-
- if (strstr(masquerade, "username_extension") != NULL)
- username_extension_masquerading = TRUE;
-
if (strcmp(sm_method, "smtp") == 0)
sm_mts = MTS_SMTP;
else if (strcmp(sm_method, "sendmail") == 0)
/*
* Find the user's username and full name, and cache them.
- * Also, handle "mmailid" username masquerading controlled from the GECOS field
- * of the passwd file.
*/
static void
/* Get the user's real name from the GECOS field. Stop once we hit a ',',
which some OSes use to separate other 'finger' information in the GECOS
- field, like phone number. Also, if mmailid masquerading is turned on due
- to "mmailid" appearing on the "masquerade:" line of mts.conf, stop if we
- hit a '<' (which should precede any ','s). */
- if (mmailid_masquerading)
- /* Stop at ',' or '<'. */
- for (cp = fullname; *np != '\0' && *np != ',' && *np != '<';
- *cp++ = *np++)
- continue;
- else
- /* Allow '<' as a legal character of the user's name. This code is
- basically a duplicate of the code above the "else" -- we don't
- collapse it down to one copy and put the mmailid_masquerading check
- inside the loop with "(x ? y : z)" because that's inefficient and the
- value'll never change while it's in there. */
- for (cp = fullname; *np != '\0' && *np != ',';
- *cp++ = *np++)
- continue;
+ field, like phone number. */
+ for (cp = fullname; *np != '\0' && *np != ','; *cp++ = *np++)
+ continue;
*cp = '\0';
- if (mmailid_masquerading) {
- /* Do mmailid processing. The GECOS field should have the form
- "Full Name <fakeusername>". For instance,
- "Dan Harkless <Dan.Harkless>". Naturally, you'll want your MTA to
- have an alias (e.g. in /etc/aliases) from "fakeusername" to your
- account name. */
- if (*np)
- np++;
- for (cp = username; *np && *np != '>'; *cp++ = *np++)
- continue;
- *cp = '\0';
- }
- if (!mmailid_masquerading || *np == '\0')
- strncpy (username, pw->pw_name, sizeof(username));
+ strncpy (username, pw->pw_name, sizeof(username));
/* The $SIGNATURE environment variable overrides the GECOS field's idea of
your real name. If SIGNATURE isn't set, use the Signature profile
extern char *getfullname (void);
extern char *getusername (void);
-extern boolean draft_from_masquerading; /* defined in mts.c */
-
/*
* static prototypes
*/
if (!(msgflags & MDAT))
fprintf (out, "Date: %s\n", dtimenow (0));
- if (msgflags & MFRM) {
- /* There was already a From: in the draft. Don't add one. */
- if (!draft_from_masquerading)
- /* mts.conf didn't contain "masquerade:[...]draft_from[...]"
- so we'll reveal the user's actual account@thismachine
- address in a Sender: header (and use it as the envelope
- From: later). */
- fprintf (out, "Sender: %s\n", from);
- }
- else
+ if (!(msgflags & MFRM))
fprintf (out, "From: %s\n", signature);
#ifdef notdef
case resent:
if (!(msgflags & MRDT))
fprintf (out, "Resent-Date: %s\n", dtimenow(0));
- if (msgflags & MRFM) {
- /* There was already a Resent-From: in draft. Don't add one. */
- if (!draft_from_masquerading)
- /* mts.conf didn't contain "masquerade:[...]draft_from[...]"
- so we'll reveal the user's actual account@thismachine
- address in a Sender: header (and use it as the envelope
- From: later). */
- fprintf (out, "Resent-Sender: %s\n", from);
- }
- else
+ if (!(msgflags & MRFM))
/* Construct a Resent-From: header. */
fprintf (out, "Resent-From: %s\n", signature);
#ifdef notdef
chmod (bccfil, 0600);
fprintf (out, "Date: %s\n", dtimenow (0));
- if (msgflags & MFRM) {
- /* There was already a From: in the draft. Don't add one. */
- if (!draft_from_masquerading)
- /* mts.conf didn't contain "masquerade:[...]draft_from[...]"
- so we'll reveal the user's actual account@thismachine
- address in a Sender: header (and use it as the envelope
- From: later). */
- fprintf (out, "Sender: %s\n", from);
- }
- else
+ if (!(msgflags & MFRM))
/* Construct a From: header. */
fprintf (out, "From: %s\n", signature);
if (subject)
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