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Diffstat (limited to 'src/postconf/postconf_builtin.c')
| -rw-r--r-- | src/postconf/postconf_builtin.c | 461 |
1 files changed, 461 insertions, 0 deletions
diff --git a/src/postconf/postconf_builtin.c b/src/postconf/postconf_builtin.c new file mode 100644 index 0000000..e1a55fa --- /dev/null +++ b/src/postconf/postconf_builtin.c @@ -0,0 +1,461 @@ +/*++ +/* 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", ""}, + 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); +} |