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MINOR: sample: add the sha1 converter

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This converter can be used to generate a SHA1 digest from binary type
sample. The result is a binary sample with length of 20 bytes.
This commit is contained in:
Dragan Dosen 2017-10-24 09:18:23 +02:00 committed by Willy Tarreau
parent 7389dd086c
commit 6e5a9ca948
2 changed files with 24 additions and 0 deletions
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4
doc/configuration.txt
View File

@ -12912,6 +12912,10 @@ set-var(<var name>)
This prefix is followed by a name. The separator is a '.'. The name may only
contain characters 'a-z', 'A-Z', '0-9', '.' and '_'.
sha1
Converts a binary input sample to a SHA1 digest. The result is a binary
sample with length of 20 bytes.
sub(<value>)
Subtracts <value> from the input value of type signed integer, and returns
the result as an signed integer. Note: in order to subtract the input from

20
src/sample.c
View File

@ -33,6 +33,7 @@
#include <proto/stick_table.h>
#include <proto/vars.h>
#include <import/sha1.h>
#include <import/xxhash.h>
/* sample type names */
@ -1504,6 +1505,24 @@ static int sample_conv_bin2base64(const struct arg *arg_p, struct sample *smp, v
return 1;
}
static int sample_conv_sha1(const struct arg *arg_p, struct sample *smp, void *private)
{
blk_SHA_CTX ctx;
struct chunk *trash = get_trash_chunk();
memset(&ctx, 0, sizeof(ctx));
blk_SHA1_Init(&ctx);
blk_SHA1_Update(&ctx, smp->data.u.str.str, smp->data.u.str.len);
blk_SHA1_Final((unsigned char *)trash->str, &ctx);
trash->len = 20;
smp->data.u.str = *trash;
smp->data.type = SMP_T_BIN;
smp->flags &= ~SMP_F_CONST;
return 1;
}
static int sample_conv_bin2hex(const struct arg *arg_p, struct sample *smp, void *private)
{
struct chunk *trash = get_trash_chunk();
@ -2756,6 +2775,7 @@ static struct sample_conv_kw_list sample_conv_kws = {ILH, {
{ "field", sample_conv_field, ARG2(2,SINT,STR), sample_conv_field_check, SMP_T_STR, SMP_T_STR },
{ "word", sample_conv_word, ARG2(2,SINT,STR), sample_conv_field_check, SMP_T_STR, SMP_T_STR },
{ "regsub", sample_conv_regsub, ARG3(2,REG,STR,STR), sample_conv_regsub_check, SMP_T_STR, SMP_T_STR },
{ "sha1", sample_conv_sha1, 0, NULL, SMP_T_BIN, SMP_T_BIN },
{ "and", sample_conv_binary_and, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
{ "or", sample_conv_binary_or, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },