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/*++
/* NAME
/* argv_attr_scan
/* SUMMARY
/* read ARGV from stream
/* SYNOPSIS
/* #include <argv_attr.h>
/*
/* int argv_attr_scan(scan_fn, stream, flags, ptr)
/* ATTR_SCAN_COMMON_FN scan_fn;
/* VSTREAM *stream;
/* int flags;
/* void *ptr;
/* DESCRIPTION
/* argv_attr_scan() creates an ARGV and reads its contents
/* from the named stream using the specified attribute scan
/* routine. argv_attr_scan() is meant to be passed as a call-back
/* to attr_scan(), thusly:
/*
/* ARGV *argv = 0;
/* ...
/* ... RECV_ATTR_FUNC(argv_attr_scan, (void *) &argv), ...
/* ...
/* if (argv)
/* argv_free(argv);
/* DIAGNOSTICS
/* Fatal: out of memory.
/*
/* In case of error, this function returns non-zero and creates
/* an ARGV null pointer.
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* Google, Inc.
/* 111 8th Avenue
/* New York, NY 10011, USA
/*--*/
/*
* System library.
*/
#include <sys_defs.h>
/*
* Utility library.
*/
#include <argv.h>
#include <argv_attr.h>
#include <attr.h>
#include <msg.h>
#include <vstream.h>
#include <vstring.h>
/* argv_attr_scan - write ARGV to stream */
int argv_attr_scan(ATTR_PRINT_COMMON_FN scan_fn, VSTREAM *fp,
int flags, void *ptr)
{
ARGV *argv = 0;
int size;
int ret;
if ((ret = scan_fn(fp, flags | ATTR_FLAG_MORE,
RECV_ATTR_INT(ARGV_ATTR_SIZE, &size),
ATTR_TYPE_END)) == 1) {
if (msg_verbose)
msg_info("argv_attr_scan count=%d", size);
if (size < 0 || size > ARGV_ATTR_MAX) {
msg_warn("invalid size %d from %s while reading ARGV",
size, VSTREAM_PATH(fp));
ret = -1;
} else if (size > 0) {
VSTRING *buffer = vstring_alloc(100);
argv = argv_alloc(size);
while (ret == 1 && size-- > 0) {
if ((ret = scan_fn(fp, flags | ATTR_FLAG_MORE,
RECV_ATTR_STR(ARGV_ATTR_VALUE, buffer),
ATTR_TYPE_END)) == 1)
argv_add(argv, vstring_str(buffer), ARGV_END);
}
argv_terminate(argv);
vstring_free(buffer);
}
}
*(ARGV **) ptr = argv;
if (msg_verbose)
msg_info("argv_attr_scan ret=%d", ret);
return (ret);
}
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