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/* readconfig.c -- base routine to read nmh configuration files
* -- such as nmh profile, context file, or mhn.defaults.
*
* 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 "sbr/context_find.h"
#include "m_getfld.h"
#include "trimcpy.h"
#include "getcpy.h"
#include "readconfig.h"
#include "error.h"
#include "utils.h"
#include "globals.h"
static void checkconfig(void);
struct procstr {
char *procname;
char **procnaddr;
};
static struct procstr procs[] = {
{ "context", &context },
{ "mh-sequences", &mh_seq },
{ "buildmimeproc", &buildmimeproc },
{ "fileproc", &fileproc },
{ "formatproc", &formatproc },
{ "incproc", &incproc },
{ "lproc", &lproc },
{ "mailproc", &mailproc },
{ "mhlproc", &mhlproc },
{ "moreproc", &moreproc },
{ "packproc", &packproc },
{ "postproc", &postproc },
{ "rmmproc", &rmmproc },
{ "sendproc", &sendproc },
{ "showmimeproc", &showmimeproc },
{ "showproc", &showproc },
{ "whatnowproc", &whatnowproc },
{ "whomproc", &whomproc },
{ NULL, NULL }
};
static struct node **opp = NULL;
void
readconfig (struct node **npp, FILE *ib, const char *file, int ctx)
{
int state;
char *cp;
char name[NAMESZ], field[NMH_BUFSIZ];
struct node *np;
struct procstr *ps;
m_getfld_state_t gstate;
if (npp == NULL && (npp = opp) == NULL) {
inform("bug: readconfig called but pump not primed, continuing...");
return;
}
gstate = m_getfld_state_init(ib);
for (;;) {
int fieldsz = sizeof field;
switch (state = m_getfld2(&gstate, name, field, &fieldsz)) {
case FLD:
case FLDPLUS:
NEW(np);
*npp = np;
*(npp = &np->n_next) = NULL;
np->n_name = mh_xstrdup(name);
if (state == FLDPLUS) {
cp = mh_xstrdup(field);
while (state == FLDPLUS) {
fieldsz = sizeof field;
state = m_getfld2(&gstate, name, field, &fieldsz);
cp = add (field, cp);
}
np->n_field = trimcpy (cp);
free (cp);
} else {
np->n_field = trimcpy (field);
}
np->n_context = ctx;
/*
* Now scan the list of `procs' and link in the
* field value to the global variable.
*/
for (ps = procs; ps->procname; ps++)
if (strcmp (np->n_name, ps->procname) == 0) {
*ps->procnaddr = np->n_field;
break;
}
continue;
case BODY:
die("no blank lines are permitted in %s", file);
case FILEEOF:
break;
default:
die("%s is poorly formatted", file);
}
break;
}
m_getfld_state_destroy (&gstate);
/*
* Special handling for the pager processes: lproc and moreproc.
*
* If they are not set by the profile, use the callers $PAGER if
* available, otherwise set them to DEFAULT_PAGER.
*/
if (lproc == NULL) {
lproc = getenv("PAGER");
if (lproc == NULL || lproc[0] == '\0')
lproc = DEFAULT_PAGER;
}
if (moreproc == NULL) {
moreproc = getenv("PAGER");
if (moreproc == NULL || moreproc[0] == '\0')
moreproc = DEFAULT_PAGER;
}
if (opp == NULL) {
checkconfig();
}
opp = npp;
}
void
add_profile_entry (const char *key, const char *value)
{
struct node *newnode;
/* This inserts the new node at the beginning of m_defs because
that doesn't require traversing it or checking to see if it's
empty. */
NEW(newnode);
newnode->n_name = getcpy (key);
newnode->n_field = getcpy (value);
newnode->n_context = 0;
newnode->n_next = m_defs;
m_defs = newnode;
}
/* Check profile for issues to warn about. */
void
checkconfig(void)
{
/* Check for duplicated non-null profile entries. Except
allow multiple profile entries named "#", because that's
what mh-profile(5) suggests using for comments.
Only do this check on the very first call from
context_read(), when opp is NULL. That way, entries in
mhn.defaults can be overridden without triggering
warnings.
Note that mhn.defaults, $MHN, $MHBUILD, $MHSHOW, and
$MHSTORE all put their entries into just one list, m_defs,
the same list that the profile uses. */
struct node *np;
bool has_post = false;
bool post_warning_disabled = false;
for (np = m_defs; np; np = np->n_next) {
if (*np->n_name) {
if (isatty(fileno(stderr))) {
/* Check for post component in profile. */
if (strcasecmp(np->n_name, "post") == 0) {
has_post = true;
} else if (strcasecmp(np->n_name, "postproc") == 0 &&
np->n_field != NULL) {
post_warning_disabled = true;
}
}
if (strcmp("#", np->n_name)) {
/* Yes, this is O(N^2). The profile should be small enough so
that's not a performance problem. */
struct node *np2;
for (np2 = np->n_next; np2; np2 = np2->n_next) {
if (! strcasecmp (np->n_name, np2->n_name)) {
inform("multiple \"%s\" profile components in %s, "
"ignoring \"%s\", continuing...",
np->n_name, defpath, np2->n_field);
}
}
}
}
}
if (has_post && ! post_warning_disabled) {
inform("post profile component will be ignored. To suppress "
"this warning,\n"
"either remove it, comment it with #:, or "
"add the following to %s:\npostproc: %s\n",
defpath, postproc);
}
}
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