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MINOR: sample: add the hex2i converter

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Converts a hex string containing two hex digits per input byte to an
integer. If the input value can not be converted, then zero is returned.
This commit is contained in:
Dragan Dosen 2017-10-24 09:27:34 +02:00 committed by Willy Tarreau
parent 6e5a9ca948
commit 3f957b2f83
2 changed files with 22 additions and 0 deletions
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4
doc/configuration.txt
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@ -12617,6 +12617,10 @@ hex
in a way that can be reliably transferred (eg: an SSL ID can be copied in a
header).
hex2i
Converts a hex string containing two hex digits per input byte to an
integer. If the input value can not be converted, then zero is returned.
http_date([<offset>])
Converts an integer supposed to contain a date since epoch to a string
representing this date in a format suitable for use in HTTP header fields. If

18
src/sample.c
View File

@ -1541,6 +1541,23 @@ static int sample_conv_bin2hex(const struct arg *arg_p, struct sample *smp, void
return 1;
}
static int sample_conv_hex2int(const struct arg *arg_p, struct sample *smp, void *private)
{
long long int n = 0;
int i, c;
for (i = 0; i < smp->data.u.str.len; i++) {
if ((c = hex2i(smp->data.u.str.str[i])) < 0)
return 0;
n = (n << 4) + c;
}
smp->data.u.sint = n;
smp->data.type = SMP_T_SINT;
smp->flags &= ~SMP_F_CONST;
return 1;
}
/* hashes the binary input into a 32-bit unsigned int */
static int sample_conv_djb2(const struct arg *arg_p, struct sample *smp, void *private)
{
@ -2761,6 +2778,7 @@ static struct sample_conv_kw_list sample_conv_kws = {ILH, {
{ "upper", sample_conv_str2upper, 0, NULL, SMP_T_STR, SMP_T_STR },
{ "lower", sample_conv_str2lower, 0, NULL, SMP_T_STR, SMP_T_STR },
{ "hex", sample_conv_bin2hex, 0, NULL, SMP_T_BIN, SMP_T_STR },
{ "hex2i", sample_conv_hex2int, 0, NULL, SMP_T_STR, SMP_T_SINT },
{ "ipmask", sample_conv_ipmask, ARG1(1,MSK4), NULL, SMP_T_IPV4, SMP_T_IPV4 },
{ "ltime", sample_conv_ltime, ARG2(1,STR,SINT), NULL, SMP_T_SINT, SMP_T_STR },
{ "utime", sample_conv_utime, ARG2(1,STR,SINT), NULL, SMP_T_SINT, SMP_T_STR },