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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:18:56 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:18:56 +0000 |
commit | b7c15c31519dc44c1f691e0466badd556ffe9423 (patch) | |
tree | f944572f288bab482a615e09af627d9a2b6727d8 /src/global/midna_adomain.c | |
parent | Initial commit. (diff) | |
download | postfix-b7c15c31519dc44c1f691e0466badd556ffe9423.tar.xz postfix-b7c15c31519dc44c1f691e0466badd556ffe9423.zip |
Adding upstream version 3.7.10.upstream/3.7.10
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/global/midna_adomain.c')
-rw-r--r-- | src/global/midna_adomain.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/global/midna_adomain.c b/src/global/midna_adomain.c new file mode 100644 index 0000000..81c98d4 --- /dev/null +++ b/src/global/midna_adomain.c @@ -0,0 +1,119 @@ +/*++ +/* NAME +/* midna_adomain 3 +/* SUMMARY +/* address domain part conversion +/* SYNOPSIS +/* #include <midna_adomain.h> +/* +/* char *midna_adomain_to_ascii( +/* VSTRING *dest, +/* const char *name) +/* +/* char *midna_adomain_to_utf8( +/* VSTRING *dest, +/* const char *name) +/* DESCRIPTION +/* The functions in this module transform the domain portion +/* of an email address between ASCII and UTF-8 form. Both +/* functions tolerate a missing domain, and both functions +/* return a copy of the input when the domain portion requires +/* no conversion. +/* +/* midna_adomain_to_ascii() converts an UTF-8 or ASCII domain +/* portion to ASCII. The result is a null pointer when +/* conversion fails. This function verifies that the resulting +/* domain passes valid_hostname(). +/* +/* midna_adomain_to_utf8() converts an UTF-8 or ASCII domain +/* name to UTF-8. The result is a null pointer when conversion +/* fails. This function verifies that the resulting domain, +/* after conversion to ASCII, passes valid_hostname(). +/* SEE ALSO +/* midna_domain(3), Postfix ASCII/UTF-8 domain name conversion +/* DIAGNOSTICS +/* Fatal errors: memory allocation problem. +/* Warnings: conversion error or result validation 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 <string.h> + +#ifndef NO_EAI +#include <unicode/uidna.h> + + /* + * Utility library. + */ +#include <vstring.h> +#include <stringops.h> +#include <midna_domain.h> + + /* + * Global library. + */ +#include <midna_adomain.h> + +#define STR(x) vstring_str(x) + +/* midna_adomain_to_utf8 - convert address domain portion to UTF8 */ + +char *midna_adomain_to_utf8(VSTRING *dest, const char *src) +{ + const char *cp; + const char *domain_utf8; + + if ((cp = strrchr(src, '@')) == 0) { + vstring_strcpy(dest, src); + } else { + vstring_sprintf(dest, "%*s@", (int) (cp - src), src); + if (*(cp += 1)) { + if (allascii(cp) && strstr(cp, "--") == 0) { + vstring_strcat(dest, cp); + } else if ((domain_utf8 = midna_domain_to_utf8(cp)) == 0) { + return (0); + } else { + vstring_strcat(dest, domain_utf8); + } + } + } + return (STR(dest)); +} + +/* midna_adomain_to_ascii - convert address domain portion to ASCII */ + +char *midna_adomain_to_ascii(VSTRING *dest, const char *src) +{ + const char *cp; + const char *domain_ascii; + + if ((cp = strrchr(src, '@')) == 0) { + vstring_strcpy(dest, src); + } else { + vstring_sprintf(dest, "%*s@", (int) (cp - src), src); + if (*(cp += 1)) { + if (allascii(cp)) { + vstring_strcat(dest, cp); + } else if ((domain_ascii = midna_domain_to_ascii(cp + 1)) == 0) { + return (0); + } else { + vstring_strcat(dest, domain_ascii); + } + } + } + return (STR(dest)); +} + +#endif /* NO_IDNA */ |