Adding upstream version 3.4.23.upstream/3.4.23upstream

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

1 files changed, 190 insertions, 0 deletions

diff --git a/src/global/attr_override.c b/src/global/attr_override.c
new file mode 100644
index 0000000..bff2954
--- /dev/null
+++ b/src/global/attr_override.c
@@ -0,0 +1,190 @@
+/*++
+/* NAME
+/*	attr_override 3
+/* SUMMARY
+/*	apply name=value settings from string
+/* SYNOPSIS
+/*	#include <attr_override.h>
+/*
+/*	void	attr_override(bp, delimiters, parens, ... CA_ATTR_OVER_END);
+/*	char	*bp;
+/*	const char *delimiters;
+/*	const char *parens;
+/* DESCRIPTION
+/*	This routine updates the values of known in-memory variables
+/*	based on the name=value specifications from an input string.
+/*	The input format supports parentheses around name=value to
+/*	allow whitespace around "=" and within values.
+/*
+/*	This may be used, for example, with client endpoint
+/*	specifications or with policy tables to allow selective
+/*	overrides of global main.cf parameter settings (timeouts,
+/*	fall-back policies, etc.).
+/*
+/*	Arguments:
+/* .IP bp
+/*	Pointer to input string. The input is modified.
+/* .IP "delimiters, parens"
+/*	See mystrtok(3) for description. Typical values are
+/*	CHARS_COMMA_SP and CHARS_BRACE, respectively.
+/* .PP
+/*	The parens argument is followed by a list of macros
+/*	with arguments. Each macro may appear only once.  The list
+/*	must be terminated with CA_ATTR_OVER_END which has no argument.
+/*	The following describes the expected values.
+/* .IP "CA_ATTR_OVER_STR_TABLE(const ATTR_OVER_STR *)"
+/*	The macro argument specifies a null-terminated table with
+/*	attribute names, assignment targets, and range limits which
+/*	should be the same as for the corresponding main.cf parameters.
+/* .IP "CA_ATTR_OVER_TIME_TABLE(const ATTR_OVER_TIME *)"
+/*	The macro argument specifies a null-terminated table with
+/*	attribute names, their default time units (leading digits
+/*	are skipped), assignment targets, and range limits which
+/*	should be the same as for the corresponding main.cf parameters.
+/* .IP "CA_ATTR_OVER_INT_TABLE(const ATTR_OVER_INT *)"
+/*	The macro argument specifies a null-terminated table with
+/*	attribute names, assignment targets, and range limits which
+/*	should be the same as for the corresponding main.cf parameters.
+/* SEE ALSO
+/*	mystrtok(3), safe tokenizer
+/*	extpar(3), extract text from parentheses
+/*	split_nameval(3), name-value splitter
+/* DIAGNOSTICS
+/*	Panic: interface violations.
+/*
+/*	Fatal errors: memory allocation problem, syntax error,
+/*	out-of-range error.
+/* 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
+/*--*/
+
+ /*
+  * System library.
+  */
+#include <sys_defs.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>			/* strtol() */
+
+ /*
+  * Utility library.
+  */
+#include <msg.h>
+#include <stringops.h>
+
+ /*
+  * Global library.
+  */
+#include <mail_conf.h>
+#include <conv_time.h>
+#include <attr_override.h>
+
+/* attr_override - apply settings from list of attribute=value pairs */
+
+void    attr_override(char *cp, const char *sep, const char *parens,...)
+{
+    static const char myname[] = "attr_override";
+    va_list ap;
+    int     idx;
+    char   *nameval;
+    const ATTR_OVER_INT *int_table = 0;
+    const ATTR_OVER_STR *str_table = 0;
+    const ATTR_OVER_TIME *time_table = 0;
+
+    /*
+     * Get the lookup tables and assignment targets.
+     */
+    va_start(ap, parens);
+    while ((idx = va_arg(ap, int)) != ATTR_OVER_END) {
+	switch (idx) {
+	case ATTR_OVER_INT_TABLE:
+	    if (int_table)
+		msg_panic("%s: multiple ATTR_OVER_INT_TABLE", myname);
+	    int_table = va_arg(ap, const ATTR_OVER_INT *);
+	    break;
+	case ATTR_OVER_STR_TABLE:
+	    if (str_table)
+		msg_panic("%s: multiple ATTR_OVER_STR_TABLE", myname);
+	    str_table = va_arg(ap, const ATTR_OVER_STR *);
+	    break;
+	case ATTR_OVER_TIME_TABLE:
+	    if (time_table)
+		msg_panic("%s: multiple ATTR_OVER_TIME_TABLE", myname);
+	    time_table = va_arg(ap, const ATTR_OVER_TIME *);
+	    break;
+	default:
+	    msg_panic("%s: unknown argument type: %d", myname, idx);
+	}
+    }
+    va_end(ap);
+
+    /*
+     * Process each attribute=value override in the input string.
+     */
+    while ((nameval = mystrtokq(&cp, sep, parens)) != 0) {
+	int     found = 0;
+	char   *key;
+	char   *value;
+	const char *err;
+	const ATTR_OVER_INT *ip;
+	const ATTR_OVER_STR *sp;
+	const ATTR_OVER_TIME *tp;
+	int     int_val;
+	int     def_unit;
+	char   *end;
+	long    longval;
+
+	/*
+	 * Split into name and value.
+	 */
+	/* { name = value } */
+	if (*nameval == parens[0]
+	    && (err = extpar(&nameval, parens, EXTPAR_FLAG_NONE)) != 0)
+	    msg_fatal("%s in \"%s\"", err, nameval);
+	if ((err = split_nameval(nameval, &key, &value)) != 0)
+	    msg_fatal("malformed option: %s: \"...%s...\"", err, nameval);
+
+	/*
+	 * Look up the name and apply the value.
+	 */
+	for (sp = str_table; sp != 0 && found == 0 && sp->name != 0; sp++) {
+	    if (strcmp(sp->name, key) != 0)
+		continue;
+	    check_mail_conf_str(sp->name, value, sp->min, sp->max);
+	    sp->target[0] = value;
+	    found = 1;
+	}
+	for (ip = int_table; ip != 0 && found == 0 && ip->name != 0; ip++) {
+	    if (strcmp(ip->name, key) != 0)
+		continue;
+	    /* XXX Duplicated from mail_conf_int(3). */
+	    errno = 0;
+	    int_val = longval = strtol(value, &end, 10);
+	    if (*value == 0 || *end != 0 || errno == ERANGE
+		|| longval != int_val)
+		msg_fatal("bad numerical configuration: %s = %s", key, value);
+	    check_mail_conf_int(key, int_val, ip->min, ip->max);
+	    ip->target[0] = int_val;
+	    found = 1;
+	}
+	for (tp = time_table; tp != 0 && found == 0 && tp->name != 0; tp++) {
+	    if (strcmp(tp->name, key) != 0)
+		continue;
+	    def_unit = tp->defval[strspn(tp->defval, "0123456789")];
+	    if (conv_time(value, &int_val, def_unit) == 0)
+		msg_fatal("%s: bad time value or unit: %s", key, value);
+	    check_mail_conf_time(key, int_val, tp->min, tp->max);
+	    tp->target[0] = int_val;
+	    found = 1;
+	}
+	if (found == 0)
+	    msg_fatal("unknown option: \"%s = %s\"", key, value);
+    }
+}