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/*++
/* NAME
/* attr_print64 3
/* SUMMARY
/* send attributes over byte stream
/* SYNOPSIS
/* #include <attr.h>
/*
/* int attr_print64(fp, flags, type, name, ...)
/* VSTREAM fp;
/* int flags;
/* int type;
/* char *name;
/*
/* int attr_vprint64(fp, flags, ap)
/* VSTREAM fp;
/* int flags;
/* va_list ap;
/* DESCRIPTION
/* attr_print64() takes zero or more (name, value) simple attributes
/* or (name, count, value) list attributes, and converts its input
/* to a byte stream that can be recovered with attr_scan64(). The stream
/* is not flushed.
/*
/* attr_vprint64() provides an alternate interface that is convenient
/* for calling from within variadoc functions.
/*
/* Attributes are sent in the requested order as specified with the
/* attr_print64() argument list. This routine satisfies the formatting
/* rules as outlined in attr_scan64(3).
/*
/* Arguments:
/* .IP fp
/* Stream to write the result to.
/* .IP flags
/* The bit-wise OR of zero or more of the following.
/* .RS
/* .IP ATTR_FLAG_MORE
/* After sending the requested attributes, leave the output stream in
/* a state that is usable for more attribute sending operations on
/* the same output attribute list.
/* By default, attr_print64() automatically appends an attribute list
/* terminator when it has sent the last requested attribute.
/* .RE
/* .IP type
/* The type determines the arguments that follow.
/* .RS
/* .IP "ATTR_TYPE_NUM (char *, int)"
/* This argument is followed by an attribute name and an integer.
/* .IP "ATTR_TYPE_NUM (char *, long)"
/* This argument is followed by an attribute name and a long integer.
/* .IP "ATTR_TYPE_STR (char *, char *)"
/* This argument is followed by an attribute name and a null-terminated
/* string.
/* .IP "ATTR_TYPE_HASH (HTABLE *)"
/* The content of the hash table is sent as a sequence of string-valued
/* attributes with names equal to the hash table lookup key.
/* .IP ATTR_TYPE_END
/* This terminates the attribute list.
/* .RE
/* DIAGNOSTICS
/* The result value is 0 in case of success, VSTREAM_EOF in case
/* of trouble.
/*
/* Panic: interface violation. All system call errors are fatal.
/* SEE ALSO
/* attr_scan64(3) recover attributes from byte 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
/*--*/
/* System library. */
#include <sys_defs.h>
#include <stdarg.h>
#include <string.h>
/* Utility library. */
#include <msg.h>
#include <mymalloc.h>
#include <vstream.h>
#include <htable.h>
#include <base64_code.h>
#include <attr.h>
#define STR(x) vstring_str(x)
#define LEN(x) VSTRING_LEN(x)
/* attr_print64_str - encode and send attribute information */
static void attr_print64_str(VSTREAM *fp, const char *str, int len)
{
static VSTRING *base64_buf;
if (base64_buf == 0)
base64_buf = vstring_alloc(10);
base64_encode(base64_buf, str, len);
vstream_fputs(STR(base64_buf), fp);
}
static void attr_print64_num(VSTREAM *fp, unsigned num)
{
static VSTRING *plain;
if (plain == 0)
plain = vstring_alloc(10);
vstring_sprintf(plain, "%u", num);
attr_print64_str(fp, STR(plain), LEN(plain));
}
static void attr_print64_long_num(VSTREAM *fp, unsigned long long_num)
{
static VSTRING *plain;
if (plain == 0)
plain = vstring_alloc(10);
vstring_sprintf(plain, "%lu", long_num);
attr_print64_str(fp, STR(plain), LEN(plain));
}
/* attr_vprint64 - send attribute list to stream */
int attr_vprint64(VSTREAM *fp, int flags, va_list ap)
{
const char *myname = "attr_print64";
int attr_type;
char *attr_name;
unsigned int_val;
unsigned long long_val;
char *str_val;
HTABLE_INFO **ht_info_list;
HTABLE_INFO **ht;
/*
* Sanity check.
*/
if (flags & ~ATTR_FLAG_ALL)
msg_panic("%s: bad flags: 0x%x", myname, flags);
/*
* Iterate over all (type, name, value) triples, and produce output on
* the fly.
*/
while ((attr_type = va_arg(ap, int)) != ATTR_TYPE_END) {
switch (attr_type) {
case ATTR_TYPE_NUM:
attr_name = va_arg(ap, char *);
attr_print64_str(fp, attr_name, strlen(attr_name));
int_val = va_arg(ap, int);
VSTREAM_PUTC(':', fp);
attr_print64_num(fp, (unsigned) int_val);
if (msg_verbose)
msg_info("send attr %s = %u", attr_name, int_val);
break;
case ATTR_TYPE_LONG:
attr_name = va_arg(ap, char *);
attr_print64_str(fp, attr_name, strlen(attr_name));
long_val = va_arg(ap, long);
VSTREAM_PUTC(':', fp);
attr_print64_long_num(fp, (unsigned long) long_val);
if (msg_verbose)
msg_info("send attr %s = %lu", attr_name, long_val);
break;
case ATTR_TYPE_STR:
attr_name = va_arg(ap, char *);
attr_print64_str(fp, attr_name, strlen(attr_name));
str_val = va_arg(ap, char *);
VSTREAM_PUTC(':', fp);
attr_print64_str(fp, str_val, strlen(str_val));
if (msg_verbose)
msg_info("send attr %s = %s", attr_name, str_val);
break;
case ATTR_TYPE_HASH:
ht_info_list = htable_list(va_arg(ap, HTABLE *));
for (ht = ht_info_list; *ht; ht++) {
attr_print64_str(fp, ht[0]->key, strlen(ht[0]->key));
VSTREAM_PUTC(':', fp);
attr_print64_str(fp, ht[0]->value, strlen(ht[0]->value));
if (msg_verbose)
msg_info("send attr name %s value %s",
ht[0]->key, ht[0]->value);
if (ht[1] != 0)
VSTREAM_PUTC('\n', fp);
}
myfree((char *) ht_info_list);
break;
default:
msg_panic("%s: unknown type code: %d", myname, attr_type);
}
VSTREAM_PUTC('\n', fp);
}
if ((flags & ATTR_FLAG_MORE) == 0)
VSTREAM_PUTC('\n', fp);
return (vstream_ferror(fp));
}
int attr_print64(VSTREAM *fp, int flags,...)
{
va_list ap;
int ret;
va_start(ap, flags);
ret = attr_vprint64(fp, flags, ap);
va_end(ap);
return (ret);
}
#ifdef TEST
/*
* Proof of concept test program. Mirror image of the attr_scan64 test
* program.
*/
#include <msg_vstream.h>
int main(int unused_argc, char **argv)
{
HTABLE *table = htable_create(1);
msg_vstream_init(argv[0], VSTREAM_ERR);
msg_verbose = 1;
htable_enter(table, "foo-name", mystrdup("foo-value"));
htable_enter(table, "bar-name", mystrdup("bar-value"));
attr_print64(VSTREAM_OUT, ATTR_FLAG_NONE,
ATTR_TYPE_NUM, ATTR_NAME_NUM, 4711,
ATTR_TYPE_LONG, ATTR_NAME_LONG, 1234,
ATTR_TYPE_STR, ATTR_NAME_STR, "whoopee",
ATTR_TYPE_HASH, table,
ATTR_TYPE_END);
attr_print64(VSTREAM_OUT, ATTR_FLAG_NONE,
ATTR_TYPE_NUM, ATTR_NAME_NUM, 4711,
ATTR_TYPE_LONG, ATTR_NAME_LONG, 1234,
ATTR_TYPE_STR, ATTR_NAME_STR, "whoopee",
ATTR_TYPE_END);
if (vstream_fflush(VSTREAM_OUT) != 0)
msg_fatal("write error: %m");
htable_free(table, myfree);
return (0);
}
#endif
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