diff options
Diffstat (limited to 'conf/pam_conv1/pam_conv_y.y')
| -rw-r--r-- | conf/pam_conv1/pam_conv_y.y | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/conf/pam_conv1/pam_conv_y.y b/conf/pam_conv1/pam_conv_y.y new file mode 100644 index 0000000..3fcb7da --- /dev/null +++ b/conf/pam_conv1/pam_conv_y.y @@ -0,0 +1,210 @@ +%{ + +/* + * $Id$ + * + * 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.) + */ + + static const char bisonid[]= + "$Id$\n" + "Copyright (c) Andrew G. Morgan 1997-8 <morgan@linux.kernel.org>\n"; + +#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); +} |