timestamp: error out if fstat and lstat st_ino and st_dev are not the same

[opendoas.git] / parse.y

diff --git a/parse.y b/parse.y
index 7454f85f0a75bb6e0d2243fa0cb712e6fe7f2c2a..e4a041a374164133761a77c8f3f1e27f09c7556a 100644 (file)
--- a/parse.y
+++ b/parse.y
@@ -39,6 +39,7 @@ typedef struct {
                        const char **cmdargs;
                        const char **envlist;
                };
+               const char **strlist;
                const char *str;
        };
        int lineno;
@@ -49,17 +50,30 @@ typedef struct {
 FILE *yyfp;
 
 struct rule **rules;
-int nrules, maxrules;
+int nrules;
+static int maxrules;
+
 int parse_errors = 0;
 
-void yyerror(const char *, ...);
-int yylex(void);
-int yyparse(void);
+static void yyerror(const char *, ...);
+static int yylex(void);
+
+static size_t
+arraylen(const char **arr)
+{
+       size_t cnt = 0;
+
+       while (*arr) {
+               cnt++;
+               arr++;
+       }
+       return cnt;
+}
 
 %}
 
 %token TPERMIT TDENY TAS TCMD TARGS
-%token TNOPASS TKEEPENV
+%token TNOPASS TPERSIST TKEEPENV TSETENV
 %token TSTRING
 
 %%
@@ -100,15 +114,23 @@ action:           TPERMIT options {
                        $$.envlist = $2.envlist;
                } | TDENY {
                        $$.action = DENY;
+                       $$.options = 0;
+                       $$.envlist = NULL;
                } ;
 
-options:       /* none */
-               | options option {
+options:       /* none */ {
+                       $$.options = 0;
+                       $$.envlist = NULL;
+               } | options option {
                        $$.options = $1.options | $2.options;
                        $$.envlist = $1.envlist;
+                       if (($$.options & (NOPASS|PERSIST)) == (NOPASS|PERSIST)) {
+                               yyerror("can't combine nopass and persist");
+                               YYERROR;
+                       }
                        if ($2.envlist) {
                                if ($$.envlist) {
-                                       yyerror("can't have two keepenv sections");
+                                       yyerror("can't have two setenv sections");
                                        YYERROR;
                                } else
                                        $$.envlist = $2.envlist;
@@ -116,24 +138,29 @@ options:  /* none */
                } ;
 option:                TNOPASS {
                        $$.options = NOPASS;
+                       $$.envlist = NULL;
+               } | TPERSIST {
+                       $$.options = PERSIST;
+                       $$.envlist = NULL;
                } | TKEEPENV {
                        $$.options = KEEPENV;
-               } | TKEEPENV '{' envlist '}' {
-                       $$.options = KEEPENV;
-                       $$.envlist = $3.envlist;
+                       $$.envlist = NULL;
+               } | TSETENV '{' strlist '}' {
+                       $$.options = 0;
+                       $$.envlist = $3.strlist;
                } ;
 
-envlist:       /* empty */ {
-                       if (!($$.envlist = calloc(1, sizeof(char *))))
-                               errx(1, "can't allocate envlist");
-               } | envlist TSTRING {
-                       int nenv = arraylen($1.envlist);
-                       if (!($$.envlist = reallocarray($1.envlist, nenv + 2,
+strlist:       /* empty */ {
+                       if (!($$.strlist = calloc(1, sizeof(char *))))
+                               errx(1, "can't allocate strlist");
+               } | strlist TSTRING {
+                       int nstr = arraylen($1.strlist);
+                       if (!($$.strlist = reallocarray($1.strlist, nstr + 2,
                            sizeof(char *))))
-                               errx(1, "can't allocate envlist");
-                       $$.envlist[nenv] = $2.str;
-                       $$.envlist[nenv + 1] = NULL;
-               }
+                               errx(1, "can't allocate strlist");
+                       $$.strlist[nstr] = $2.str;
+                       $$.strlist[nstr + 1] = NULL;
+               } ;
 
 
 ident:         TSTRING {
@@ -156,20 +183,8 @@ cmd:               /* optional */ {
 
 args:          /* empty */ {
                        $$.cmdargs = NULL;
-               } | TARGS argslist {
-                       $$.cmdargs = $2.cmdargs;
-               } ;
-
-argslist:      /* empty */ {
-                       if (!($$.cmdargs = calloc(1, sizeof(char *))))
-                               errx(1, "can't allocate args");
-               } | argslist TSTRING {
-                       int nargs = arraylen($1.cmdargs);
-                       if (!($$.cmdargs = reallocarray($1.cmdargs, nargs + 2,
-                           sizeof(char *))))
-                               errx(1, "can't allocate args");
-                       $$.cmdargs[nargs] = $2.str;
-                       $$.cmdargs[nargs + 1] = NULL;
+               } | TARGS strlist {
+                       $$.cmdargs = $2.strlist;
                } ;
 
 %%
@@ -179,6 +194,7 @@ yyerror(const char *fmt, ...)
 {
        va_list va;
 
+       fprintf(stderr, "doas: ");
        va_start(va, fmt);
        vfprintf(stderr, fmt, va);
        va_end(va);
@@ -186,7 +202,7 @@ yyerror(const char *fmt, ...)
        parse_errors++;
 }
 
-struct keyword {
+static struct keyword {
        const char *word;
        int token;
 } keywords[] = {
@@ -196,14 +212,16 @@ struct keyword {
        { "cmd", TCMD },
        { "args", TARGS },
        { "nopass", TNOPASS },
+       { "persist", TPERSIST },
        { "keepenv", TKEEPENV },
+       { "setenv", TSETENV },
 };
 
 int
 yylex(void)
 {
        char buf[1024], *ebuf, *p, *str;
-       int i, c, quotes = 0, escape = 0, qpos = -1, nonkw = 0;
+       int c, quotes = 0, escape = 0, qpos = -1, nonkw = 0;
 
        p = buf;
        ebuf = buf + sizeof(buf);
@@ -306,13 +324,14 @@ eow:
                        goto repeat;
        }
        if (!nonkw) {
+               size_t i;
                for (i = 0; i < sizeof(keywords) / sizeof(keywords[0]); i++) {
                        if (strcmp(buf, keywords[i].word) == 0)
                                return keywords[i].token;
                }
        }
        if ((str = strdup(buf)) == NULL)
-               err(1, "strdup");
+               err(1, "%s", __func__);
        yylval.str = str;
        return TSTRING;
 }