diff options
Diffstat (limited to 'src/global/mail_conf_int.c')
| -rw-r--r-- | src/global/mail_conf_int.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/src/global/mail_conf_int.c b/src/global/mail_conf_int.c new file mode 100644 index 0000000..9017183 --- /dev/null +++ b/src/global/mail_conf_int.c @@ -0,0 +1,223 @@ +/*++ +/* NAME +/* mail_conf_int 3 +/* SUMMARY +/* integer-valued configuration parameter support +/* SYNOPSIS +/* #include <mail_conf.h> +/* +/* int get_mail_conf_int(name, defval, min, max); +/* const char *name; +/* int defval; +/* int min; +/* int max; +/* +/* int get_mail_conf_int_fn(name, defval, min, max); +/* const char *name; +/* int (*defval)(); +/* int min; +/* int max; +/* +/* void set_mail_conf_int(name, value) +/* const char *name; +/* int value; +/* +/* void get_mail_conf_int_table(table) +/* const CONFIG_INT_TABLE *table; +/* +/* void get_mail_conf_int_fn_table(table) +/* const CONFIG_INT_TABLE *table; +/* AUXILIARY FUNCTIONS +/* int get_mail_conf_int2(name1, name2, defval, min, max); +/* const char *name1; +/* const char *name2; +/* int defval; +/* int min; +/* int max; +/* +/* void check_mail_conf_int(name, intval, min, max) +/* const char *name; +/* int intval; +/* int min; +/* int max; +/* DESCRIPTION +/* This module implements configuration parameter support +/* for integer values. +/* +/* get_mail_conf_int() looks up the named entry in the global +/* configuration dictionary. The default value is returned +/* when no value was found. +/* \fImin\fR is zero or specifies a lower limit on the integer +/* value or string length; \fImax\fR is zero or specifies an +/* upper limit on the integer value or string length. +/* +/* get_mail_conf_int_fn() is similar but specifies a function that +/* provides the default value. The function is called only +/* when the default value is needed. +/* +/* set_mail_conf_int() updates the named entry in the global +/* configuration dictionary. This has no effect on values that +/* have been looked up earlier via the get_mail_conf_XXX() routines. +/* +/* get_mail_conf_int_table() and get_mail_conf_int_fn_table() initialize +/* lists of variables, as directed by their table arguments. A table +/* must be terminated by a null entry. +/* +/* get_mail_conf_int2() concatenates the two names and is otherwise +/* identical to get_mail_conf_int(). +/* +/* check_mail_conf_int() exits with a fatal run-time error +/* when the integer value does not meet its requirements. +/* DIAGNOSTICS +/* Fatal errors: malformed numerical value. +/* SEE ALSO +/* config(3) general configuration +/* mail_conf_str(3) string-valued configuration parameters +/* 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 <stdlib.h> +#include <stdio.h> /* BUFSIZ */ +#include <errno.h> + +/* Utility library. */ + +#include <msg.h> +#include <mymalloc.h> +#include <dict.h> +#include <stringops.h> + +/* Global library. */ + +#include "mail_conf.h" + +/* convert_mail_conf_int - look up and convert integer parameter value */ + +static int convert_mail_conf_int(const char *name, int *intval) +{ + const char *strval; + char *end; + long longval; + + if ((strval = mail_conf_lookup_eval(name)) != 0) { + errno = 0; + *intval = longval = strtol(strval, &end, 10); + if (*strval == 0 || *end != 0 || errno == ERANGE || longval != *intval) + msg_fatal("bad numerical configuration: %s = %s", name, strval); + return (1); + } + return (0); +} + +/* check_mail_conf_int - validate integer value */ + +void check_mail_conf_int(const char *name, int intval, int min, int max) +{ + if (min && intval < min) + msg_fatal("invalid %s parameter value %d < %d", name, intval, min); + if (max && intval > max) + msg_fatal("invalid %s parameter value %d > %d", name, intval, max); +} + +/* get_mail_conf_int - evaluate integer-valued configuration variable */ + +int get_mail_conf_int(const char *name, int defval, int min, int max) +{ + int intval; + + if (convert_mail_conf_int(name, &intval) == 0) + set_mail_conf_int(name, intval = defval); + check_mail_conf_int(name, intval, min, max); + return (intval); +} + +/* get_mail_conf_int2 - evaluate integer-valued configuration variable */ + +int get_mail_conf_int2(const char *name1, const char *name2, int defval, + int min, int max) +{ + int intval; + char *name; + + name = concatenate(name1, name2, (char *) 0); + if (convert_mail_conf_int(name, &intval) == 0) + set_mail_conf_int(name, intval = defval); + check_mail_conf_int(name, intval, min, max); + myfree(name); + return (intval); +} + +/* get_mail_conf_int_fn - evaluate integer-valued configuration variable */ + +typedef int (*stupid_indent_int) (void); + +int get_mail_conf_int_fn(const char *name, stupid_indent_int defval, + int min, int max) +{ + int intval; + + if (convert_mail_conf_int(name, &intval) == 0) + set_mail_conf_int(name, intval = defval()); + check_mail_conf_int(name, intval, min, max); + return (intval); +} + +/* set_mail_conf_int - update integer-valued configuration dictionary entry */ + +void set_mail_conf_int(const char *name, int value) +{ + const char myname[] = "set_mail_conf_int"; + char buf[BUFSIZ]; /* yeah! crappy code! */ + +#ifndef NO_SNPRINTF + ssize_t ret; + + ret = snprintf(buf, sizeof(buf), "%d", value); + if (ret < 0) + msg_panic("%s: output error for %%d", myname); + if (ret >= sizeof(buf)) + msg_panic("%s: output for %%d exceeds space %ld", + myname, (long) sizeof(buf)); +#else + sprintf(buf, "%d", value); /* yeah! more crappy code! */ +#endif + mail_conf_update(name, buf); +} + +/* get_mail_conf_int_table - look up table of integers */ + +void get_mail_conf_int_table(const CONFIG_INT_TABLE *table) +{ + while (table->name) { + table->target[0] = get_mail_conf_int(table->name, table->defval, + table->min, table->max); + table++; + } +} + +/* get_mail_conf_int_fn_table - look up integers, defaults are functions */ + +void get_mail_conf_int_fn_table(const CONFIG_INT_FN_TABLE *table) +{ + while (table->name) { + table->target[0] = get_mail_conf_int_fn(table->name, table->defval, + table->min, table->max); + table++; + } +} |