1 files changed, 469 insertions, 0 deletions
diff --git a/src/postconf/postconf_builtin.c b/src/postconf/postconf_builtin.c
new file mode 100644
index 0000000..1fc337c
--- /dev/null
+++ b/src/postconf/postconf_builtin.c
@@ -0,0 +1,469 @@
+/*++
+/* NAME
+/*	postconf_builtin 3
+/* SUMMARY
+/*	built-in main.cf parameter support
+/* SYNOPSIS
+/*	#include <postconf.h>
+/*
+/*	void	pcf_register_builtin_parameters(procname, pid)
+/*	const char *procname;
+/*	pid_t	pid;
+/* DESCRIPTION
+/*	pcf_register_builtin_parameters() initializes the global
+/*	main.cf parameter name space and adds all built-in parameter
+/*	information.
+/*
+/*	Arguments:
+/*.IP procname
+/*	Provides the default value for the "process_name" parameter.
+/*.IP pid
+/*	Provides the default value for the "process_id" parameter.
+/* DIAGNOSTICS
+/*	Problems are reported to the standard error stream.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <string.h>
+
+#ifdef USE_PATHS_H
+#include <paths.h>
+#endif
+
+/* Utility library. */
+
+#include <msg.h>
+#include <mymalloc.h>
+#include <htable.h>
+#include <vstring.h>
+#include <get_hostname.h>
+#include <stringops.h>
+
+/* Global library. */
+
+#include <mynetworks.h>
+#include <mail_conf.h>
+#include <mail_params.h>
+#include <mail_version.h>
+#include <mail_proto.h>
+#include <mail_addr.h>
+#include <inet_proto.h>
+#include <server_acl.h>
+
+/* Application-specific. */
+
+#include <postconf.h>
+
+ /*
+  * Support for built-in parameters: declarations generated by scanning
+  * actual C source files.
+  */
+#include "time_vars.h"
+#include "bool_vars.h"
+#include "int_vars.h"
+#include "str_vars.h"
+#include "raw_vars.h"
+#include "nint_vars.h"
+#include "nbool_vars.h"
+#include "long_vars.h"
+
+ /*
+  * Support for built-in parameters: manually extracted.
+  */
+#include "install_vars.h"
+
+ /*
+  * Support for built-in parameters: lookup tables generated by scanning
+  * actual C source files.
+  */
+static const CONFIG_TIME_TABLE pcf_time_table[] = {
+#include "time_table.h"
+    0,
+};
+
+static const CONFIG_BOOL_TABLE pcf_bool_table[] = {
+#include "bool_table.h"
+    0,
+};
+
+static const CONFIG_INT_TABLE pcf_int_table[] = {
+#include "int_table.h"
+    0,
+};
+
+static const CONFIG_STR_TABLE pcf_str_table[] = {
+#include "str_table.h"
+#include "install_table.h"
+    0,
+};
+
+static const CONFIG_RAW_TABLE pcf_raw_table[] = {
+#include "raw_table.h"
+    0,
+};
+
+static const CONFIG_NINT_TABLE pcf_nint_table[] = {
+#include "nint_table.h"
+    0,
+};
+
+static const CONFIG_NBOOL_TABLE pcf_nbool_table[] = {
+#include "nbool_table.h"
+    0,
+};
+
+static const CONFIG_LONG_TABLE pcf_long_table[] = {
+#include "long_table.h"
+    0,
+};
+
+ /*
+  * Legacy parameters for backwards compatibility.
+  */
+static const CONFIG_STR_TABLE pcf_legacy_str_table[] = {
+    {"virtual_maps", ""},
+    {"fallback_relay", ""},
+    {"authorized_verp_clients", ""},
+    {"smtpd_client_connection_limit_exceptions", ""},
+    {"postscreen_dnsbl_ttl", ""},
+    {"postscreen_blacklist_action", ""},
+    {"postscreen_dnsbl_whitelist_threshold", ""},
+    {"postscreen_whitelist_interfaces", ""},
+    {"lmtp_per_record_deadline", ""},
+    {"smtp_per_record_deadline", ""},
+    {"smtpd_per_record_deadline", ""},
+    {"tlsproxy_client_level", ""},
+    {"tlsproxy_client_policy", ""},
+    0,
+};
+
+ /*
+  * Parameters whose default values are normally initialized by calling a
+  * function. We direct the calls to our own versions of those functions
+  * because the run-time conditions are slightly different.
+  * 
+  * Important: if the evaluation of a parameter default value has any side
+  * effects, then those side effects must happen only once.
+  */
+static const char *pcf_check_myhostname(void);
+static const char *pcf_check_mydomainname(void);
+static const char *pcf_mynetworks(void);
+
+#include "str_fn_vars.h"
+
+static const CONFIG_STR_FN_TABLE pcf_str_fn_table[] = {
+#include "str_fn_table.h"
+    0,
+};
+
+ /*
+  * Parameters whose default values are normally initialized by ad-hoc code.
+  * The AWK script cannot identify these parameters or values, so we provide
+  * our own.
+  * 
+  * Important: if the evaluation of a parameter default value has any side
+  * effects, then those side effects must happen only once.
+  */
+static CONFIG_STR_TABLE pcf_adhoc_procname = {VAR_PROCNAME};
+static CONFIG_STR_TABLE pcf_adhoc_servname = {VAR_SERVNAME};
+static CONFIG_INT_TABLE pcf_adhoc_pid = {VAR_PID};
+
+#define STR(x) vstring_str(x)
+
+/* pcf_check_myhostname - lookup hostname and validate */
+
+static const char *pcf_check_myhostname(void)
+{
+    static const char *name;
+    const char *dot;
+    const char *domain;
+
+    /*
+     * Use cached result.
+     */
+    if (name)
+	return (name);
+
+    /*
+     * If the local machine name is not in FQDN form, try to append the
+     * contents of $mydomain.
+     */
+    name = get_hostname();
+    if ((dot = strchr(name, '.')) == 0) {
+	if ((domain = mail_conf_lookup_eval(VAR_MYDOMAIN)) == 0)
+	    domain = DEF_MYDOMAIN;
+	name = concatenate(name, ".", domain, (char *) 0);
+    }
+    return (name);
+}
+
+/* pcf_get_myhostname - look up and store my hostname */
+
+static void pcf_get_myhostname(void)
+{
+    const char *name;
+
+    if ((name = mail_conf_lookup_eval(VAR_MYHOSTNAME)) == 0)
+	name = pcf_check_myhostname();
+    var_myhostname = mystrdup(name);
+}
+
+/* pcf_check_mydomainname - lookup domain name and validate */
+
+static const char *pcf_check_mydomainname(void)
+{
+    static const char *domain;
+    char   *dot;
+
+    /*
+     * Use cached result.
+     */
+    if (domain)
+	return (domain);
+
+    /*
+     * Use a default domain when the hostname is not a FQDN ("foo").
+     */
+    if (var_myhostname == 0)
+	pcf_get_myhostname();
+    if ((dot = strchr(var_myhostname, '.')) == 0)
+	return (domain = DEF_MYDOMAIN);
+    return (domain = mystrdup(dot + 1));
+}
+
+/* pcf_mynetworks - lookup network address list */
+
+static const char *pcf_mynetworks(void)
+{
+    static const char *networks;
+    VSTRING *exp_buf;
+    const char *junk;
+
+    /*
+     * Use cached result.
+     */
+    if (networks)
+	return (networks);
+
+    exp_buf = vstring_alloc(100);
+
+    if (var_inet_interfaces == 0) {
+	if ((pcf_cmd_mode & PCF_SHOW_DEFS)
+	    || (junk = mail_conf_lookup_eval(VAR_INET_INTERFACES)) == 0)
+	    junk = pcf_expand_parameter_value(exp_buf, pcf_cmd_mode,
+					      DEF_INET_INTERFACES,
+					      (PCF_MASTER_ENT *) 0);
+	var_inet_interfaces = mystrdup(junk);
+    }
+    if (var_mynetworks_style == 0) {
+	if ((pcf_cmd_mode & PCF_SHOW_DEFS)
+	    || (junk = mail_conf_lookup_eval(VAR_MYNETWORKS_STYLE)) == 0)
+	    junk = pcf_expand_parameter_value(exp_buf, pcf_cmd_mode,
+					      DEF_MYNETWORKS_STYLE,
+					      (PCF_MASTER_ENT *) 0);
+	var_mynetworks_style = mystrdup(junk);
+    }
+    if (var_inet_protocols == 0) {
+	if ((pcf_cmd_mode & PCF_SHOW_DEFS)
+	    || (junk = mail_conf_lookup_eval(VAR_INET_PROTOCOLS)) == 0)
+	    junk = pcf_expand_parameter_value(exp_buf, pcf_cmd_mode,
+					      DEF_INET_PROTOCOLS,
+					      (PCF_MASTER_ENT *) 0);
+	var_inet_protocols = mystrdup(junk);
+	(void) inet_proto_init(VAR_INET_PROTOCOLS, var_inet_protocols);
+    }
+    vstring_free(exp_buf);
+    return (networks = mystrdup(mynetworks()));
+}
+
+/* pcf_conv_bool_parameter - get boolean parameter string value */
+
+static const char *pcf_conv_bool_parameter(void *ptr)
+{
+    CONFIG_BOOL_TABLE *cbt = (CONFIG_BOOL_TABLE *) ptr;
+
+    return (cbt->defval ? "yes" : "no");
+}
+
+/* pcf_conv_time_parameter - get relative time parameter string value */
+
+static const char *pcf_conv_time_parameter(void *ptr)
+{
+    CONFIG_TIME_TABLE *ctt = (CONFIG_TIME_TABLE *) ptr;
+
+    return (ctt->defval);
+}
+
+/* pcf_conv_int_parameter - get integer parameter string value */
+
+static const char *pcf_conv_int_parameter(void *ptr)
+{
+    CONFIG_INT_TABLE *cit = (CONFIG_INT_TABLE *) ptr;
+
+    return (STR(vstring_sprintf(pcf_param_string_buf, "%d", cit->defval)));
+}
+
+/* pcf_conv_str_parameter - get string parameter string value */
+
+static const char *pcf_conv_str_parameter(void *ptr)
+{
+    CONFIG_STR_TABLE *cst = (CONFIG_STR_TABLE *) ptr;
+
+    return (cst->defval);
+}
+
+/* pcf_conv_str_fn_parameter - get string-function parameter string value */
+
+static const char *pcf_conv_str_fn_parameter(void *ptr)
+{
+    CONFIG_STR_FN_TABLE *cft = (CONFIG_STR_FN_TABLE *) ptr;
+
+    return (cft->defval());
+}
+
+/* pcf_conv_raw_parameter - get raw string parameter string value */
+
+static const char *pcf_conv_raw_parameter(void *ptr)
+{
+    CONFIG_RAW_TABLE *rst = (CONFIG_RAW_TABLE *) ptr;
+
+    return (rst->defval);
+}
+
+/* pcf_conv_nint_parameter - get new integer parameter string value */
+
+static const char *pcf_conv_nint_parameter(void *ptr)
+{
+    CONFIG_NINT_TABLE *rst = (CONFIG_NINT_TABLE *) ptr;
+
+    return (rst->defval);
+}
+
+/* pcf_conv_nbool_parameter - get new boolean parameter string value */
+
+static const char *pcf_conv_nbool_parameter(void *ptr)
+{
+    CONFIG_NBOOL_TABLE *bst = (CONFIG_NBOOL_TABLE *) ptr;
+
+    return (bst->defval);
+}
+
+/* pcf_conv_long_parameter - get long parameter string value */
+
+static const char *pcf_conv_long_parameter(void *ptr)
+{
+    CONFIG_LONG_TABLE *clt = (CONFIG_LONG_TABLE *) ptr;
+
+    return (STR(vstring_sprintf(pcf_param_string_buf, "%ld", clt->defval)));
+}
+
+/* pcf_register_builtin_parameters - add built-ins to the global name space */
+
+void    pcf_register_builtin_parameters(const char *procname, pid_t pid)
+{
+    const char *myname = "pcf_register_builtin_parameters";
+    const CONFIG_TIME_TABLE *ctt;
+    const CONFIG_BOOL_TABLE *cbt;
+    const CONFIG_INT_TABLE *cit;
+    const CONFIG_STR_TABLE *cst;
+    const CONFIG_STR_FN_TABLE *cft;
+    const CONFIG_RAW_TABLE *rst;
+    const CONFIG_NINT_TABLE *nst;
+    const CONFIG_NBOOL_TABLE *bst;
+    const CONFIG_LONG_TABLE *lst;
+
+    /*
+     * Sanity checks.
+     */
+    if (pcf_param_table != 0)
+	msg_panic("%s: global parameter table is already initialized", myname);
+
+    /*
+     * Initialize the global parameter table.
+     */
+    pcf_param_table = PCF_PARAM_TABLE_CREATE(1000);
+
+    /*
+     * Add the built-in parameters to the global name space. The class
+     * (built-in) is tentative; some parameters are actually service-defined,
+     * but they have their own default value.
+     */
+    for (ctt = pcf_time_table; ctt->name; ctt++)
+	PCF_PARAM_TABLE_ENTER(pcf_param_table, ctt->name,
+			      PCF_PARAM_FLAG_BUILTIN, (void *) ctt,
+			      pcf_conv_time_parameter);
+    for (cbt = pcf_bool_table; cbt->name; cbt++)
+	PCF_PARAM_TABLE_ENTER(pcf_param_table, cbt->name,
+			      PCF_PARAM_FLAG_BUILTIN, (void *) cbt,
+			      pcf_conv_bool_parameter);
+    for (cit = pcf_int_table; cit->name; cit++)
+	PCF_PARAM_TABLE_ENTER(pcf_param_table, cit->name,
+			      PCF_PARAM_FLAG_BUILTIN, (void *) cit,
+			      pcf_conv_int_parameter);
+    for (cst = pcf_str_table; cst->name; cst++)
+	PCF_PARAM_TABLE_ENTER(pcf_param_table, cst->name,
+			      PCF_PARAM_FLAG_BUILTIN, (void *) cst,
+			      pcf_conv_str_parameter);
+    for (cft = pcf_str_fn_table; cft->name; cft++)
+	PCF_PARAM_TABLE_ENTER(pcf_param_table, cft->name,
+			      PCF_PARAM_FLAG_BUILTIN, (void *) cft,
+			      pcf_conv_str_fn_parameter);
+    for (rst = pcf_raw_table; rst->name; rst++)
+	PCF_PARAM_TABLE_ENTER(pcf_param_table, rst->name,
+			      PCF_PARAM_FLAG_BUILTIN | PCF_PARAM_FLAG_RAW,
+			      (void *) rst, pcf_conv_raw_parameter);
+    for (nst = pcf_nint_table; nst->name; nst++)
+	PCF_PARAM_TABLE_ENTER(pcf_param_table, nst->name,
+			      PCF_PARAM_FLAG_BUILTIN, (void *) nst,
+			      pcf_conv_nint_parameter);
+    for (bst = pcf_nbool_table; bst->name; bst++)
+	PCF_PARAM_TABLE_ENTER(pcf_param_table, bst->name,
+			      PCF_PARAM_FLAG_BUILTIN, (void *) bst,
+			      pcf_conv_nbool_parameter);
+    for (lst = pcf_long_table; lst->name; lst++)
+	PCF_PARAM_TABLE_ENTER(pcf_param_table, lst->name,
+			      PCF_PARAM_FLAG_BUILTIN, (void *) lst,
+			      pcf_conv_long_parameter);
+
+    /*
+     * Register legacy parameters (used as a backwards-compatible migration
+     * aid).
+     */
+    for (cst = pcf_legacy_str_table; cst->name; cst++)
+	PCF_PARAM_TABLE_ENTER(pcf_param_table, cst->name,
+			      PCF_PARAM_FLAG_LEGACY, (void *) cst,
+			      pcf_conv_str_parameter);
+
+    /*
+     * Register parameters whose default value is normally initialized by
+     * ad-hoc code.
+     */
+    pcf_adhoc_procname.defval = mystrdup(procname);
+    PCF_PARAM_TABLE_ENTER(pcf_param_table, pcf_adhoc_procname.name,
+			  PCF_PARAM_FLAG_BUILTIN | PCF_PARAM_FLAG_READONLY,
+		      (void *) &pcf_adhoc_procname, pcf_conv_str_parameter);
+    pcf_adhoc_servname.defval = mystrdup("");
+    PCF_PARAM_TABLE_ENTER(pcf_param_table, pcf_adhoc_servname.name,
+			  PCF_PARAM_FLAG_BUILTIN | PCF_PARAM_FLAG_READONLY,
+		      (void *) &pcf_adhoc_servname, pcf_conv_str_parameter);
+    pcf_adhoc_pid.defval = pid;
+    PCF_PARAM_TABLE_ENTER(pcf_param_table, pcf_adhoc_pid.name,
+			  PCF_PARAM_FLAG_BUILTIN | PCF_PARAM_FLAG_READONLY,
+			  (void *) &pcf_adhoc_pid, pcf_conv_int_parameter);
+}