- /* 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). */
-#ifndef BSD42
- 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;
-#else /* BSD42 */
- /* On BSD(-derived) systems, the system utilities that deal with the GECOS
- field (finger, mail, sendmail, etc.) translate any '&' character in it to
- the login name, with the first letter capitalized. So, for instance,
- fingering a user "bob" with the GECOS field "& Jones" would reveal him to
- be "In real life: Bob Jones". Surprisingly, though, the OS doesn't do
- the translation for you, so we have to do it manually here. */
- if (mmailid_masquerading)
- /* Stop at ',' or '<'. */
- for (cp = fullname;
- *np != '\0' && *np != ',' && *np != '<';) {
- if (*np == '&') { /* blech! */
- strcpy (cp, pw->pw_name);
- *cp = toupper(*cp);
- while (*cp)
- cp++;
- np++;
- } else {
- *cp++ = *np++;
- }
- }
- 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 != ',';) {
- if (*np == '&') { /* blech! */
- strcpy (cp, pw->pw_name);
- *cp = toupper(*cp);
- while (*cp)
- cp++;
- np++;
- } else {
- *cp++ = *np++;
+ /* username */
+ /* If there's a Local-Mailbox profile component, try to extract
+ the username from it. But don't try very hard, this assumes
+ the very simple User Name <user@name.com> form.
+ Note that post(8) and whom(1) use context_foil (), so they
+ won't see the profile component. */
+ if ((np = context_find("Local-Mailbox")) != NULL) {
+ char *left_angle_bracket = strchr (np, '<');
+ char *at_sign = strchr (np, '@');
+ char *right_angle_bracket = strchr (np, '>');
+
+ strncpy(localmbox, np, sizeof(localmbox));
+
+ if (left_angle_bracket && at_sign && right_angle_bracket) {
+ if (at_sign > left_angle_bracket &&
+ at_sign - left_angle_bracket < BUFSIZ) {
+ strncpy(username, left_angle_bracket + 1,
+ at_sign - left_angle_bracket - 1);