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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:06:34 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:06:34 +0000 |
commit | 5e61585d76ae77fd5e9e96ebabb57afa4d74880d (patch) | |
tree | 2b467823aaeebc7ef8bc9e3cabe8074eaef1666d /src/global/verp_sender.c | |
parent | Initial commit. (diff) | |
download | postfix-upstream/3.5.24.tar.xz postfix-upstream/3.5.24.zip |
Adding upstream version 3.5.24.upstream/3.5.24upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/global/verp_sender.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/global/verp_sender.c b/src/global/verp_sender.c new file mode 100644 index 0000000..1d1149f --- /dev/null +++ b/src/global/verp_sender.c @@ -0,0 +1,113 @@ +/*++ +/* NAME +/* verp_sender 3 +/* SUMMARY +/* quote local part of mailbox +/* SYNOPSIS +/* #include <verp_sender.h> +/* +/* VSTRING *verp_sender(dst, delims, sender, recipient) +/* VSTRING *dst; +/* const char *delims; +/* const char *sender; +/* const RECIPIENT *recipient; +/* +/* const char *verp_delims_verify(delims) +/* const char *delims; +/* DESCRIPTION +/* verp_sender() encodes the recipient address in the sender +/* address, using the specified delimiters. For example, +/* with delims +=, sender \fIprefix@origin\fR, and +/* recipient \fIuser@domain\fR the result is +/* \fIprefix+user=domain@origin\fR. +/* +/* verp_delims_verify() determines if the specified VERP delimiters +/* have reasonable values. What is reasonable is configured with +/* the verp_delimiter_filter configuration parameter. The result +/* is null in case of success, a description of the problem in +/* case of error. +/* +/* Arguments: +/* .IP dst +/* The result. The buffer is null terminated. +/* .IP delims +/* VERP formatting characters. +/* .IP sender +/* Sender envelope address. +/* .IP recipient +/* Recipient envelope address. +/* 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 <vstring.h> + +/* Global library. */ + +#include <mail_params.h> +#include <recipient_list.h> +#include <verp_sender.h> + +/* verp_sender - encode recipient into envelope sender address */ + +VSTRING *verp_sender(VSTRING *buf, const char *delimiters, + const char *sender, const RECIPIENT *rcpt_info) +{ + ssize_t send_local_len; + ssize_t rcpt_local_len; + const char *recipient; + const char *cp; + + /* + * Change prefix@origin into prefix+user=domain@origin. + * + * Fix 20090115: Use the Postfix original recipient, because that is what + * the VERP consumer expects. + */ + send_local_len = ((cp = strrchr(sender, '@')) != 0 ? + cp - sender : strlen(sender)); + recipient = (rcpt_info->orig_addr[0] ? + rcpt_info->orig_addr : rcpt_info->address); + rcpt_local_len = ((cp = strrchr(recipient, '@')) != 0 ? + cp - recipient : strlen(recipient)); + vstring_strncpy(buf, sender, send_local_len); + VSTRING_ADDCH(buf, delimiters[0] & 0xff); + vstring_strncat(buf, recipient, rcpt_local_len); + if (recipient[rcpt_local_len] && recipient[rcpt_local_len + 1]) { + VSTRING_ADDCH(buf, delimiters[1] & 0xff); + vstring_strcat(buf, recipient + rcpt_local_len + 1); + } + if (sender[send_local_len] && sender[send_local_len + 1]) { + VSTRING_ADDCH(buf, '@'); + vstring_strcat(buf, sender + send_local_len + 1); + } + VSTRING_TERMINATE(buf); + return (buf); +} + +/* verp_delims_verify - sanitize VERP delimiters */ + +const char *verp_delims_verify(const char *delims) +{ + if (strlen(delims) != 2) + return ("bad VERP delimiter character count"); + if (strchr(var_verp_filter, delims[0]) == 0) + return ("bad first VERP delimiter character"); + if (strchr(var_verp_filter, delims[1]) == 0) + return ("bad second VERP delimiter character"); + return (0); +} |