Adding upstream version 3.4.23.upstream/3.4.23upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 322 insertions, 0 deletions

diff --git a/src/global/cfg_parser.c b/src/global/cfg_parser.c
new file mode 100644
index 0000000..de006c7
--- /dev/null
+++ b/src/global/cfg_parser.c
@@ -0,0 +1,322 @@
+/*++
+/* NAME
+/*	cfg_parser 3
+/* SUMMARY
+/*	configuration parser utilities
+/* SYNOPSIS
+/*	#include "cfg_parser.h"
+/*
+/*	CFG_PARSER *cfg_parser_alloc(pname)
+/*	const char *pname;
+/*
+/*	CFG_PARSER *cfg_parser_free(parser)
+/*	CFG_PARSER *parser;
+/*
+/*	char *cfg_get_str(parser, name, defval, min, max)
+/*	const CFG_PARSER *parser;
+/*	const char *name;
+/*	const char *defval;
+/*	int min;
+/*	int max;
+/*
+/*	int cfg_get_int(parser, name, defval, min, max)
+/*	const CFG_PARSER *parser;
+/*	const char *name;
+/*	int defval;
+/*	int min;
+/*	int max;
+/*
+/*	int cfg_get_bool(parser, name, defval)
+/*	const CFG_PARSER *parser;
+/*	const char *name;
+/*	int defval;
+/*
+/*	DICT_OWNER cfg_get_owner(parser)
+/*	const CFG_PARSER *parser;
+/* DESCRIPTION
+/*	This module implements utilities for parsing parameters defined
+/*	either as "\fIname\fR = \fBvalue\fR" in a file pointed to by
+/*	\fIpname\fR (the old MySQL style), or as "\fIpname\fR_\fIname\fR =
+/*	\fBvalue\fR" in main.cf (the old LDAP style).  It unifies the
+/*	two styles and provides support for range checking.
+/*
+/*	\fIcfg_parser_alloc\fR initializes the parser. The result
+/*	is NULL if a configuration file could not be opened.
+/*
+/*	\fIcfg_parser_free\fR releases the parser.
+/*
+/*	\fIcfg_get_str\fR looks up a string.
+/*
+/*	\fIcfg_get_int\fR looks up an integer.
+/*
+/*	\fIcfg_get_bool\fR looks up a boolean value.
+/*
+/*	\fIdefval\fR 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.
+/*
+/*	Conveniently, \fIcfg_get_str\fR returns \fBNULL\fR if
+/*	\fIdefval\fR is \fBNULL\fR and no value was found.  The returned
+/*	string has to be freed by the caller if not \fBNULL\fR.
+/*
+/*	cfg_get_owner() looks up the configuration file owner.
+/* DIAGNOSTICS
+/*	Fatal errors: bad string length, malformed numerical value, malformed
+/*	boolean value.
+/* SEE ALSO
+/*	mail_conf_str(3) string-valued global configuration parameter support
+/*	mail_conf_int(3) integer-valued configuration parameter support
+/*	mail_conf_bool(3) boolean-valued configuration parameter support
+/* 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
+/*
+/*	Liviu Daia
+/*	Institute of Mathematics of the Romanian Academy
+/*	P.O. BOX 1-764
+/*	RO-014700 Bucharest, ROMANIA
+/*--*/
+
+/* System library. */
+
+#include "sys_defs.h"
+
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+#ifdef STRCASECMP_IN_STRINGS_H
+#include <strings.h>
+#endif
+
+/* Utility library. */
+
+#include "msg.h"
+#include "mymalloc.h"
+#include "vstring.h"
+#include "dict.h"
+
+/* Global library. */
+
+#include "mail_conf.h"
+
+/* Application-specific. */
+
+#include "cfg_parser.h"
+
+/* get string from file */
+
+static char *get_dict_str(const struct CFG_PARSER *parser,
+			          const char *name, const char *defval,
+			          int min, int max)
+{
+    const char *strval;
+    int     len;
+
+    if ((strval = dict_lookup(parser->name, name)) == 0)
+	strval = defval;
+
+    len = strlen(strval);
+    if (min && len < min)
+	msg_fatal("%s: bad string length %d < %d: %s = %s",
+		  parser->name, len, min, name, strval);
+    if (max && len > max)
+	msg_fatal("%s: bad string length %d > %d: %s = %s",
+		  parser->name, len, max, name, strval);
+    return (mystrdup(strval));
+}
+
+/* get string from main.cf */
+
+static char *get_main_str(const struct CFG_PARSER *parser,
+			          const char *name, const char *defval,
+			          int min, int max)
+{
+    static VSTRING *buf = 0;
+
+    if (buf == 0)
+	buf = vstring_alloc(15);
+    vstring_sprintf(buf, "%s_%s", parser->name, name);
+    return (get_mail_conf_str(vstring_str(buf), defval, min, max));
+}
+
+/* get integer from file */
+
+static int get_dict_int(const struct CFG_PARSER *parser,
+		             const char *name, int defval, int min, int max)
+{
+    const char *strval;
+    char   *end;
+    int     intval;
+    long    longval;
+
+    if ((strval = dict_lookup(parser->name, name)) != 0) {
+	errno = 0;
+	intval = longval = strtol(strval, &end, 10);
+	if (*strval == 0 || *end != 0 || errno == ERANGE || longval != intval)
+	    msg_fatal("%s: bad numerical configuration: %s = %s",
+		      parser->name, name, strval);
+    } else
+	intval = defval;
+    if (min && intval < min)
+	msg_fatal("%s: invalid %s parameter value %d < %d",
+		  parser->name, name, intval, min);
+    if (max && intval > max)
+	msg_fatal("%s: invalid %s parameter value %d > %d",
+		  parser->name, name, intval, max);
+    return (intval);
+}
+
+/* get integer from main.cf */
+
+static int get_main_int(const struct CFG_PARSER *parser,
+		             const char *name, int defval, int min, int max)
+{
+    static VSTRING *buf = 0;
+
+    if (buf == 0)
+	buf = vstring_alloc(15);
+    vstring_sprintf(buf, "%s_%s", parser->name, name);
+    return (get_mail_conf_int(vstring_str(buf), defval, min, max));
+}
+
+/* get boolean option from file */
+
+static int get_dict_bool(const struct CFG_PARSER *parser,
+			         const char *name, int defval)
+{
+    const char *strval;
+    int     intval;
+
+    if ((strval = dict_lookup(parser->name, name)) != 0) {
+	if (strcasecmp(strval, CONFIG_BOOL_YES) == 0) {
+	    intval = 1;
+	} else if (strcasecmp(strval, CONFIG_BOOL_NO) == 0) {
+	    intval = 0;
+	} else {
+	    msg_fatal("%s: bad boolean configuration: %s = %s",
+		      parser->name, name, strval);
+	}
+    } else
+	intval = defval;
+    return (intval);
+}
+
+/* get boolean option from main.cf */
+
+static int get_main_bool(const struct CFG_PARSER *parser,
+			         const char *name, int defval)
+{
+    static VSTRING *buf = 0;
+
+    if (buf == 0)
+	buf = vstring_alloc(15);
+    vstring_sprintf(buf, "%s_%s", parser->name, name);
+    return (get_mail_conf_bool(vstring_str(buf), defval));
+}
+
+/* initialize parser */
+
+CFG_PARSER *cfg_parser_alloc(const char *pname)
+{
+    const char *myname = "cfg_parser_alloc";
+    CFG_PARSER *parser;
+    DICT   *dict;
+
+    if (pname == 0 || *pname == 0)
+	msg_fatal("%s: null parser name", myname);
+    parser = (CFG_PARSER *) mymalloc(sizeof(*parser));
+    parser->name = mystrdup(pname);
+    if (*parser->name == '/' || *parser->name == '.') {
+	if (dict_load_file_xt(parser->name, parser->name) == 0) {
+	    myfree(parser->name);
+	    myfree((void *) parser);
+	    return (0);
+	}
+	parser->get_str = get_dict_str;
+	parser->get_int = get_dict_int;
+	parser->get_bool = get_dict_bool;
+	dict = dict_handle(parser->name);
+    } else {
+	parser->get_str = get_main_str;
+	parser->get_int = get_main_int;
+	parser->get_bool = get_main_bool;
+	dict = dict_handle(CONFIG_DICT);	/* XXX Use proper API */
+    }
+    if (dict == 0)
+	msg_panic("%s: dict_handle failed", myname);
+    parser->owner = dict->owner;
+    return (parser);
+}
+
+/* get string */
+
+char   *cfg_get_str(const CFG_PARSER *parser, const char *name,
+		            const char *defval, int min, int max)
+{
+    const char *myname = "cfg_get_str";
+    char   *strval;
+
+    strval = parser->get_str(parser, name, (defval ? defval : ""), min, max);
+    if (defval == 0 && *strval == 0) {
+	/* the caller wants NULL instead of "" */
+	myfree(strval);
+	strval = 0;
+    }
+    if (msg_verbose)
+	msg_info("%s: %s: %s = %s", myname, parser->name, name,
+		 (strval ? strval : "<NULL>"));
+    return (strval);
+}
+
+/* get integer */
+
+int     cfg_get_int(const CFG_PARSER *parser, const char *name, int defval,
+		            int min, int max)
+{
+    const char *myname = "cfg_get_int";
+    int     intval;
+
+    intval = parser->get_int(parser, name, defval, min, max);
+    if (msg_verbose)
+	msg_info("%s: %s: %s = %d", myname, parser->name, name, intval);
+    return (intval);
+}
+
+/* get boolean option */
+
+int     cfg_get_bool(const CFG_PARSER *parser, const char *name, int defval)
+{
+    const char *myname = "cfg_get_bool";
+    int     intval;
+
+    intval = parser->get_bool(parser, name, defval);
+    if (msg_verbose)
+	msg_info("%s: %s: %s = %s", myname, parser->name, name,
+		 (intval ? "on" : "off"));
+    return (intval);
+}
+
+/* release parser */
+
+CFG_PARSER *cfg_parser_free(CFG_PARSER *parser)
+{
+    const char *myname = "cfg_parser_free";
+
+    if (parser->name == 0 || *parser->name == 0)
+	msg_panic("%s: null parser name", myname);
+    if (*parser->name == '/' || *parser->name == '.') {
+	if (dict_handle(parser->name))
+	    dict_unregister(parser->name);
+    }
+    myfree(parser->name);
+    myfree((void *) parser);
+    return (0);
+}