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|
%{
/*
* $Id$
*
* Copyright (c) Andrew G. Morgan 1997 <morgan@parc.power.net>
*
* This file is covered by the Linux-PAM License (which should be
* distributed with this file.)
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <ctype.h>
#include <sys/stat.h>
extern int yylex(void);
int current_line=1;
extern char *yytext;
/* XXX - later we'll change this to be the specific conf file(s) */
#define newpamf stderr
#define PAM_D "./pam.d"
#define PAM_D_MODE 0755
#define PAM_D_MAGIC_HEADER \
"#%%PAM-1.0\n" \
"#[For version 1.0 syntax, the above header is optional]\n"
#define PAM_D_FILE_FMT PAM_D "/%s"
const char *old_to_new_ctrl_flag(const char *old);
void yyerror(const char *format, ...);
%}
%union {
int def;
char *string;
}
%token NL EOFILE TOK
%type <string> tok path tokenls
%start complete
%%
complete
:
| complete NL
| complete line
| complete EOFILE {
return 0;
}
;
line
: tok tok tok path tokenls NL {
char *filename;
FILE *conf;
int i;
/* make sure we have lower case */
for (i=0; $1[i]; ++i) {
$1[i] = tolower($1[i]);
}
/* $1 = service-name */
yyerror("Appending to " PAM_D "/%s", $1);
filename = malloc(strlen($1) + sizeof(PAM_D) + 6);
sprintf(filename, PAM_D_FILE_FMT, $1);
conf = fopen(filename, "r");
if (conf == NULL) {
/* new file */
conf = fopen(filename, "w");
if (conf != NULL) {
fprintf(conf, PAM_D_MAGIC_HEADER);
fprintf(conf,
"#\n"
"# The PAM configuration file for the `%s' service\n"
"#\n", $1);
}
} else {
fclose(conf);
conf = fopen(filename, "a");
}
if (conf == NULL) {
yyerror("trouble opening %s - aborting", filename);
exit(1);
}
free(filename);
/* $2 = module-type */
fprintf(conf, "%-10s", $2);
free($2);
/* $3 = required etc. */
{
const char *trans;
trans = old_to_new_ctrl_flag($3);
free($3);
fprintf(conf, " %-10s", trans);
}
/* $4 = module-path */
fprintf(conf, " %s", $4);
free($4);
/* $5 = arguments */
if ($5 != NULL) {
fprintf(conf, " \\\n\t\t%s", $5);
free($5);
}
/* end line */
fprintf(conf, "\n");
fclose(conf);
}
| error NL {
yyerror("malformed line");
}
;
tokenls
: {
$$=NULL;
}
| tokenls tok {
int len;
if ($1) {
len = strlen($1) + strlen($2) + 2;
$$ = malloc(len);
sprintf($$,"%s %s",$1,$2);
free($1);
free($2);
} else {
$$ = $2;
}
}
;
path
: TOK {
/* XXX - this could be used to check if file present */
$$ = strdup(yytext);
}
tok
: TOK {
$$ = strdup(yytext);
}
%%
const char *old_to_new_ctrl_flag(const char *old)
{
static const char *clist[] = {
"requisite",
"required",
"sufficient",
"optional",
NULL,
};
int i;
for (i=0; clist[i]; ++i) {
if (strcasecmp(clist[i], old) == 0) {
break;
}
}
return clist[i];
}
void yyerror(const char *format, ...)
{
va_list args;
fprintf(stderr, "line %d: ", current_line);
va_start(args, format);
vfprintf(stderr, format, args);
va_end(args);
fprintf(stderr, "\n");
}
int main(void)
{
if (mkdir(PAM_D, PAM_D_MODE) != 0) {
yyerror(PAM_D " already exists.. aborting");
exit(1);
}
yyparse();
exit(0);
}
|
