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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/ehlo_mask.c | |
parent | Initial commit. (diff) | |
download | postfix-upstream.tar.xz postfix-upstream.zip |
Adding upstream version 3.7.10.upstream/3.7.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/global/ehlo_mask.c')
-rw-r--r-- | src/global/ehlo_mask.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/src/global/ehlo_mask.c b/src/global/ehlo_mask.c new file mode 100644 index 0000000..df905e1 --- /dev/null +++ b/src/global/ehlo_mask.c @@ -0,0 +1,145 @@ +/*++ +/* NAME +/* ehlo_mask 3 +/* SUMMARY +/* map EHLO keywords to bit mask +/* SYNOPSIS +/* #include <ehlo_mask.h> +/* +/* #define EHLO_MASK_8BITMIME (1<<0) +/* #define EHLO_MASK_PIPELINING (1<<1) +/* #define EHLO_MASK_SIZE (1<<2) +/* #define EHLO_MASK_VRFY (1<<3) +/* #define EHLO_MASK_ETRN (1<<4) +/* #define EHLO_MASK_AUTH (1<<5) +/* #define EHLO_MASK_VERP (1<<6) +/* #define EHLO_MASK_STARTTLS (1<<7) +/* #define EHLO_MASK_XCLIENT (1<<8) +/* #define EHLO_MASK_XFORWARD (1<<9) +/* #define EHLO_MASK_ENHANCEDSTATUSCODES (1<<10) +/* #define EHLO_MASK_DSN (1<<11) +/* #define EHLO_MASK_SMTPUTF8 (1<<12) +/* #define EHLO_MASK_CHUNKING (1<<13) +/* #define EHLO_MASK_SILENT (1<<15) +/* +/* int ehlo_mask(keyword_list) +/* const char *keyword_list; +/* +/* const char *str_ehlo_mask(bitmask) +/* int bitmask; +/* DESCRIPTION +/* ehlo_mask() computes the bit-wise OR of the masks that correspond +/* to the names listed in the \fIkeyword_list\fR argument, separated by +/* comma and/or whitespace characters. Undefined names are silently +/* ignored. +/* +/* str_ehlo_mask() translates a mask into its equivalent names. +/* The result is written to a static buffer that is overwritten +/* upon each call. Undefined bits cause a fatal run-time error. +/* DIAGNOSTICS +/* Fatal: str_ehlo_mask() found an undefined bit. +/* 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 +/* +/* Wietse Venema +/* Google, Inc. +/* 111 8th Avenue +/* New York, NY 10011, USA +/*--*/ + +/* System library.*/ + +#include <sys_defs.h> + +/* Utility library. */ + +#include <name_mask.h> + +/* Global library. */ + +#include <ehlo_mask.h> + + /* + * The lookup table. + */ +static const NAME_MASK ehlo_mask_table[] = { + "8BITMIME", EHLO_MASK_8BITMIME, + "AUTH", EHLO_MASK_AUTH, + "ETRN", EHLO_MASK_ETRN, + "PIPELINING", EHLO_MASK_PIPELINING, + "SIZE", EHLO_MASK_SIZE, + "VERP", EHLO_MASK_VERP, + "VRFY", EHLO_MASK_VRFY, + "XCLIENT", EHLO_MASK_XCLIENT, + "XFORWARD", EHLO_MASK_XFORWARD, + "STARTTLS", EHLO_MASK_STARTTLS, + "ENHANCEDSTATUSCODES", EHLO_MASK_ENHANCEDSTATUSCODES, + "DSN", EHLO_MASK_DSN, + "EHLO_MASK_SMTPUTF8", EHLO_MASK_SMTPUTF8, + "SMTPUTF8", EHLO_MASK_SMTPUTF8, + "CHUNKING", EHLO_MASK_CHUNKING, + "SILENT-DISCARD", EHLO_MASK_SILENT, /* XXX In-band signaling */ + 0, +}; + +/* ehlo_mask - string to bit mask */ + +int ehlo_mask(const char *mask_str) +{ + + /* + * We allow "STARTTLS" besides "starttls, because EHLO keywords are often + * spelled in uppercase. We ignore non-existent EHLO keywords so people + * can switch between Postfix versions without trouble. + */ + return (name_mask_opt("ehlo string mask", ehlo_mask_table, + mask_str, NAME_MASK_ANY_CASE | NAME_MASK_IGNORE)); +} + +/* str_ehlo_mask - mask to string */ + +const char *str_ehlo_mask(int mask_bits) +{ + + /* + * We don't allow non-existent bits. Doing so makes no sense at this + * time. + */ + return (str_name_mask("ehlo bitmask", ehlo_mask_table, mask_bits)); +} + +#ifdef TEST + + /* + * Stand-alone test program. + */ +#include <stdlib.h> +#include <vstream.h> +#include <vstring.h> +#include <vstring_vstream.h> + +int main(int unused_argc, char **unused_argv) +{ + int mask_bits; + VSTRING *buf = vstring_alloc(1); + const char *mask_string; + + while (vstring_get_nonl(buf, VSTREAM_IN) != VSTREAM_EOF) { + mask_bits = ehlo_mask(vstring_str(buf)); + mask_string = str_ehlo_mask(mask_bits); + vstream_printf("%s -> 0x%x -> %s\n", vstring_str(buf), mask_bits, + mask_string); + vstream_fflush(VSTREAM_OUT); + } + vstring_free(buf); + exit(0); +} + +#endif |