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/*++
/* NAME
/* fold_addr 3
/* SUMMARY
/* address case folding
/* SYNOPSIS
/* #include <fold_addr.h>
/*
/* char *fold_addr(result, addr, flags)
/* VSTRING *result;
/* const char *addr;
/* int flags;
/* DESCRIPTION
/* fold_addr() case folds an address according to the options
/* specified with \fIflags\fR. The result value is the output
/* address.
/*
/* Arguments
/* .IP result
/* Result buffer with the output address. Note: casefolding
/* may change the string length.
/* .IP addr
/* Null-terminated read-only string with the input address.
/* .IP flags
/* Zero or the bit-wise OR of:
/* .RS
/* .IP FOLD_ADDR_USER
/* Case fold the address local part.
/* .IP FOLD_ADDR_HOST
/* Case fold the address domain part.
/* .IP FOLD_ADDR_ALL
/* Alias for (FOLD_ADDR_USER | FOLD_ADDR_HOST).
/* .RE
/* SEE ALSO
/* msg(3) diagnostics interface
/* casefold(3) casefold text
/* DIAGNOSTICS
/* Fatal errors: memory allocation problem.
/* 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 <string.h>
/* Utility library. */
#include <stringops.h>
/* Global library. */
#include <fold_addr.h>
#define STR(x) vstring_str(x)
/* fold_addr - case fold mail address */
char *fold_addr(VSTRING *result, const char *addr, int flags)
{
char *cp;
/*
* Fold the address as appropriate.
*/
switch (flags & FOLD_ADDR_ALL) {
case FOLD_ADDR_HOST:
if ((cp = strrchr(addr, '@')) != 0) {
cp += 1;
vstring_strncpy(result, addr, cp - addr);
casefold_append(result, cp);
break;
}
/* FALLTHROUGH */
case 0:
vstring_strcpy(result, addr);
break;
case FOLD_ADDR_USER:
if ((cp = strrchr(addr, '@')) != 0) {
casefold_len(result, addr, cp - addr);
vstring_strcat(result, cp);
break;
}
/* FALLTHROUGH */
case FOLD_ADDR_USER | FOLD_ADDR_HOST:
casefold(result, addr);
break;
}
return (STR(result));
}
#ifdef TEST
#include <stdlib.h>
#include <vstream.h>
#include <vstring_vstream.h>
#include <msg_vstream.h>
#include <argv.h>
int main(int argc, char **argv)
{
VSTRING *line_buffer = vstring_alloc(1);
VSTRING *fold_buffer = vstring_alloc(1);
ARGV *cmd;
char **args;
msg_vstream_init(argv[0], VSTREAM_ERR);
util_utf8_enable = 1;
while (vstring_fgets_nonl(line_buffer, VSTREAM_IN)) {
vstream_printf("> %s\n", STR(line_buffer));
cmd = argv_split(STR(line_buffer), CHARS_SPACE);
if (cmd->argc == 0 || cmd->argv[0][0] == '#') {
argv_free(cmd);
continue;
}
args = cmd->argv;
/*
* Fold the host.
*/
if (strcmp(args[0], "host") == 0 && cmd->argc == 2) {
vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer,
args[1], FOLD_ADDR_HOST));
}
/*
* Fold the user.
*/
else if (strcmp(args[0], "user") == 0 && cmd->argc == 2) {
vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer,
args[1], FOLD_ADDR_USER));
}
/*
* Fold user and host.
*/
else if (strcmp(args[0], "all") == 0 && cmd->argc == 2) {
vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer,
args[1], FOLD_ADDR_ALL));
}
/*
* Fold none.
*/
else if (strcmp(args[0], "none") == 0 && cmd->argc == 2) {
vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer,
args[1], 0));
}
/*
* Usage.
*/
else {
vstream_printf("Usage: %s host <addr> | user <addr> | all <addr>\n",
argv[0]);
}
vstream_fflush(VSTREAM_OUT);
argv_free(cmd);
}
vstring_free(line_buffer);
vstring_free(fold_buffer);
exit(0);
}
#endif /* TEST */
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