-
-/*
- * aliasbr.c -- new aliasing mechanism
+/* aliasbr.c -- new aliasing mechanism
*
* This code is Copyright (c) 2002, by the authors of nmh. See the
* COPYRIGHT file in the root directory of the nmh distribution for
* complete copyright information.
*/
-#include <h/mh.h>
-#include <h/aliasbr.h>
-#include <h/addrsbr.h>
-#include <h/utils.h>
-#include <grp.h>
+#include "h/mh.h"
+#include "sbr/vfgets.h"
+#include "sbr/getcpy.h"
+#include "h/aliasbr.h"
+#include "h/addrsbr.h"
+#include "h/utils.h"
#include <pwd.h>
static int akvis;
struct aka *akahead = NULL;
struct aka *akatail = NULL;
-struct home *homehead = NULL;
-struct home *hometail = NULL;
-
/*
* prototypes
*/
-int alias (char *);
-int akvisible (void);
-void init_pw (void);
-char *akresult (struct aka *);
-char *akvalue (char *);
-char *akerror (int);
-
static char *akval (struct aka *, char *);
-static int aleq (char *, char *);
-static char *scanp (unsigned char *);
+static bool aleq (char *, char *) PURE;
+static char *scanp (char *) PURE;
static char *getp (char *);
static char *seekp (char *, char *, char **);
static int addfile (struct aka *, char *);
-static int addgroup (struct aka *, char *);
-static int addmember (struct aka *, char *);
-static int addall (struct aka *);
static char *getalias (char *);
static void add_aka (struct aka *, char *);
static struct aka *akalloc (char *);
-static struct home *hmalloc (struct passwd *);
-struct home *seek_home (char *);
/* Do mh alias substitution on 's' and return the results. */
char *
akvalue (char *s)
{
- register char *v;
+ char *v;
if (akahead == NULL)
alias (AliasFile);
char *
akresult (struct aka *ak)
{
- register char *cp = NULL, *dp, *pp;
- register struct adr *ad;
+ char *cp = NULL, *dp, *pp;
+ struct adr *ad;
for (ad = ak->ak_addr; ad; ad = ad->ad_next) {
pp = ad->ad_local ? akval (ak->ak_next, ad->ad_text)
if (!s)
return s; /* XXX */
+ /* It'd be tempting to check for a trailing semicolon and remove
+ it. But that would break the EXMH alias parser on what would
+ then be valid expressions:
+ http://lists.gnu.org/archive/html/nmh-workers/2012-10/msg00039.html
+ */
+
for (; ak; ak = ak->ak_next) {
if (aleq (s, ak->ak_name)) {
return akresult (ak);
- } else if (strchr (s, ':')) {
+ }
+
+ if (strchr (s, ':')) {
/* The first address in a blind list will contain the
alias name, so try to match, but just with just the
address (not including the list name). If there's a
if (name) {
/* s is of the form "Blind list: address". If address
is an alias, expand it. */
- struct mailname *mp = getm (name, NULL, 0, AD_NAME, NULL);
+ struct mailname *mp = getm (name, NULL, 0, NULL, 0);
if (mp && mp->m_ingrp) {
- char *gname = add (mp->m_gname, NULL);
+ char *gname = mh_xstrdup(FENDNULL(mp->m_gname));
+ /* FIXME: gname must be true; add() never returns NULL.
+ * Is some other test required? */
if (gname && aleq (name, ak->ak_name)) {
/* Will leak cp. */
cp = concat (gname, akresult (ak), NULL);
}
}
- return getcpy (s);
+ return mh_xstrdup(s);
}
-static int
+static bool
aleq (char *string, char *aliasent)
{
- register char c;
+ char c;
- while ((c = *string++))
+ while ((c = *string++)) {
if (*aliasent == '*')
- return 1;
- else
- if ((c | 040) != (*aliasent | 040))
- return 0;
- else
- aliasent++;
+ return true;
+ if (tolower((unsigned char)c) != tolower((unsigned char)*aliasent))
+ return false;
+ aliasent++;
+ }
- return (*aliasent == 0 || *aliasent == '*');
+ return *aliasent == 0 || *aliasent == '*';
}
alias (char *file)
{
int i;
- register char *bp, *cp, *pp;
+ char *bp, *cp, *pp;
char lc, *ap;
- register struct aka *ak = NULL;
- register FILE *fp;
+ struct aka *ak = NULL;
+ FILE *fp;
if (*file != '/'
- && (strncmp (file, "./", 2) && strncmp (file, "../", 3)))
+ && !has_prefix(file, "./") && !has_prefix(file, "../"))
file = etcpath (file);
if ((fp = fopen (file, "r")) == NULL) {
akerrst = file;
fclose (fp);
return i;
}
-
+ continue;
case ':': /* comment */
case ';':
case '#':
}
switch (lc) {
case ':':
- ak->ak_visible = 0;
+ ak->ak_visible = false;
break;
case ';':
- ak->ak_visible = 1;
+ ak->ak_visible = true;
break;
default:
}
break;
- case '=': /* UNIX group */
- if (!*(cp = getp (pp + 1))) {
- fclose (fp);
- return AK_ERROR;
- }
- if (!addgroup (ak, cp)) {
- fclose (fp);
- return AK_NOGROUP;
- }
- break;
-
- case '+': /* UNIX group members */
- if (!*(cp = getp (pp + 1))) {
- fclose (fp);
- return AK_ERROR;
- }
- if (!addmember (ak, cp)) {
- fclose (fp);
- return AK_NOGROUP;
- }
- break;
-
- case '*': /* Everyone */
- addall (ak);
- break;
-
default: /* list */
while ((cp = getalias (pp)))
add_aka (ak, cp);
snprintf (buffer, sizeof(buffer), "out of memory while on '%s'", akerrst);
break;
- case AK_NOGROUP:
- snprintf (buffer, sizeof(buffer), "no such group as '%s'", akerrst);
- break;
-
default:
snprintf (buffer, sizeof(buffer), "unknown error (%d)", i);
break;
static char *
-scanp (unsigned char *p)
+scanp (char *p)
{
- while (isspace (*p))
+ while (isspace ((unsigned char) *p))
p++;
return p;
}
static char *
getp (char *p)
{
- register unsigned char *cp = scanp (p);
+ char *cp = scanp (p);
p = cp;
- while (!isspace (*cp) && *cp)
+ while (!isspace ((unsigned char) *cp) && *cp)
cp++;
*cp = 0;
static char *
seekp (char *p, char *c, char **a)
{
- register unsigned char *cp;
+ char *cp;
p = cp = scanp (p);
- while (!isspace (*cp) && *cp && *cp != ':' && *cp != ';')
+ while (!isspace ((unsigned char) *cp) && *cp && *cp != ':' && *cp != ';')
cp++;
*c = *cp;
*cp++ = 0;
static int
addfile (struct aka *ak, char *file)
{
- register char *cp;
+ char *cp;
char buffer[BUFSIZ];
- register FILE *fp;
+ FILE *fp;
if (!(fp = fopen (etcpath (file), "r"))) {
akerrst = file;
}
-static int
-addgroup (struct aka *ak, char *grp)
-{
- register char *gp;
- register struct group *gr = getgrnam (grp);
- register struct home *hm = NULL;
-
- if (!gr)
- gr = getgrgid (atoi (grp));
- if (!gr) {
- akerrst = grp;
- return 0;
- }
-
- while ((gp = *gr->gr_mem++))
- {
- struct passwd *pw;
- for (hm = homehead; hm; hm = hm->h_next)
- if (!strcmp (hm->h_name, gp)) {
- add_aka (ak, hm->h_name);
- break;
- }
- if ((pw = getpwnam(gp)))
- {
- hmalloc(pw);
- add_aka (ak, gp);
- }
- }
-
- return 1;
-}
-
-
-static int
-addmember (struct aka *ak, char *grp)
-{
- gid_t gid;
- register struct group *gr = getgrnam (grp);
- register struct home *hm = NULL;
-
- if (gr)
- gid = gr->gr_gid;
- else {
- gid = atoi (grp);
- gr = getgrgid (gid);
- }
- if (!gr) {
- akerrst = grp;
- return 0;
- }
-
- init_pw ();
-
- for (hm = homehead; hm; hm = hm->h_next)
- if (hm->h_gid == gid)
- add_aka (ak, hm->h_name);
-
- return 1;
-}
-
-
-static int
-addall (struct aka *ak)
-{
- int noshell = NoShell == NULL || *NoShell == 0;
- register struct home *hm;
-
- init_pw ();
-
- if (Everyone < 0)
- Everyone = EVERYONE;
-
- for (hm = homehead; hm; hm = hm->h_next)
- if ((int) hm->h_uid > Everyone
- && (noshell || strcmp (hm->h_shell, NoShell)))
- add_aka (ak, hm->h_name);
-
- return homehead != NULL;
-}
-
-
static char *
getalias (char *addrs)
{
- register unsigned char *pp, *qp;
+ char *pp, *qp;
static char *cp = NULL;
if (cp == NULL)
cp = addrs;
- else
- if (*cp == 0)
- return (cp = NULL);
+ else if (*cp == 0)
+ return cp = NULL;
/* Remove leading any space from the address. */
- for (pp = cp; isspace (*pp); pp++)
+ for (pp = cp; isspace ((unsigned char) *pp); pp++)
continue;
if (*pp == 0)
- return (cp = NULL);
+ return cp = NULL;
/* Find the end of the address. */
for (qp = pp; *qp != 0 && *qp != ','; qp++)
continue;
*qp++ = 0;
for (cp = qp, qp--; qp > pp; qp--)
if (*qp != 0) {
- if (isspace (*qp))
+ if (isspace ((unsigned char) *qp))
*qp = 0;
else
break;
static void
add_aka (struct aka *ak, char *pp)
{
- register struct adr *ad, *ld;
+ struct adr *ad, *ld;
for (ad = ak->ak_addr, ld = NULL; ad; ld = ad, ad = ad->ad_next)
if (!strcmp (pp, ad->ad_text))
return;
- ad = (struct adr *) mh_xmalloc (sizeof(*ad));
- ad->ad_text = getcpy (pp);
+ NEW(ad);
+ ad->ad_text = mh_xstrdup(pp);
ad->ad_local = strchr(pp, '@') == NULL && strchr(pp, '!') == NULL;
ad->ad_next = NULL;
if (ak->ak_addr)
}
-void
-init_pw (void)
-{
- register struct passwd *pw;
- static int init;
-
- if (!init)
- {
- /* if the list has yet to be initialized */
- /* zap the list, and rebuild from scratch */
- homehead=NULL;
- hometail=NULL;
- init++;
-
- setpwent ();
-
- while ((pw = getpwent ()))
- if (!hmalloc (pw))
- break;
-
- endpwent ();
- }
-}
-
-
static struct aka *
akalloc (char *id)
{
- register struct aka *p;
-
- p = (struct aka *) mh_xmalloc (sizeof(*p));
+ struct aka *p;
+ NEW(p);
p->ak_name = getcpy (id);
- p->ak_visible = 0;
+ p->ak_visible = false;
p->ak_addr = NULL;
p->ak_next = NULL;
if (akatail != NULL)
return p;
}
-
-
-static struct home *
-hmalloc (struct passwd *pw)
-{
- register struct home *p;
-
- p = (struct home *) mh_xmalloc (sizeof(*p));
-
- p->h_name = getcpy (pw->pw_name);
- p->h_uid = pw->pw_uid;
- p->h_gid = pw->pw_gid;
- p->h_home = getcpy (pw->pw_dir);
- p->h_shell = getcpy (pw->pw_shell);
- p->h_ngrps = 0;
- p->h_next = NULL;
- if (hometail != NULL)
- hometail->h_next = p;
- if (homehead == NULL)
- homehead = p;
- hometail = p;
-
- return p;
-}
-
-
-struct home *
-seek_home (char *name)
-{
- register struct home *hp;
- struct passwd *pw;
- char lname[32];
- unsigned char *c;
- char *c1;
-
- for (hp = homehead; hp; hp = hp->h_next)
- if (!mh_strcasecmp (name, hp->h_name))
- return hp;
-
- /*
- * The only place where there might be problems.
- * This assumes that ALL usernames are kept in lowercase.
- */
- for (c = name, c1 = lname;
- *c && (c1 - lname < (int) sizeof(lname) - 1);
- c++, c1++) {
- if (isalpha(*c) && isupper(*c))
- *c1 = tolower (*c);
- else
- *c1 = *c;
- }
- *c1 = '\0';
- if ((pw = getpwnam(lname)))
- return(hmalloc(pw));
-
- return NULL;
-}
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