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use nettle instead of openssl for (base64+sha256)=b64to32 func

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Signed-off-by: AGentooCat <agentoocat@mail.i2p>
This commit is contained in:
AGentooCat
2025-04-18 12:37:50 +00:00
parent 373d91b406
commit e99b38bf3b
2 changed files with 23 additions and 18 deletions
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2
config.mk
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@ -25,7 +25,7 @@ PROG_SRCS=main.c args.c config.c util.c mail.c sam.c smtp.c log.c linepoll.c pop
LIB_SRCS=
# what the program depends on (-l<ib>)
PROG_LIBS=-liniparser -lsqlite3 -lssl -lcrypto
PROG_LIBS=-liniparser -lsqlite3 -lnettle
# if the library installs headers, place them under (root)/include
# and add them here to be installed under (DESTDIR)/(PREFIX)/include

39
src/sam.c
View File

@ -6,9 +6,8 @@
#include <err.h>
#include <string.h>
#include <stdio.h>
#include <openssl/bio.h>
#include <openssl/sha.h>
#include <openssl/evp.h>
#include <nettle/sha2.h>
#include <nettle/base64.h>
#include <unistd.h>
#include "smtp.h"
@ -371,33 +370,39 @@ void *inmailhand(void *data) {
char *b64to32(char *dest) {
char *c = dest;
size_t l = 0, ol = 0;
while (*c) {
if (*c == '-') *c = '+';
else if (*c == '~') *c = '/';
c++;
l++;
}
BIO *b64 = BIO_new(BIO_f_base64());
BIO *mem = BIO_new_mem_buf(dest, -1);
if (!b64 || !mem) {
BIO_free(b64);
BIO_free(mem);
return NULL;
}
BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
BIO_push(b64, mem);
uint8_t bindest[391];
int lret = BIO_read(b64, bindest, 391);
BIO_free_all(b64);
uint8_t bindest[400];
memset(bindest, 0, 400);
struct base64_decode_ctx b64ctx;
nettle_base64_decode_init(&b64ctx);
int ret = nettle_base64_decode_update(&b64ctx, &ol, bindest, l, dest);
ret = ret && ol >= 391 && nettle_base64_decode_final(&b64ctx);
c = dest;
while (*c) {
if (*c == '+') *c = '-';
else if (*c == '/') *c = '~';
c++;
}
if (lret < 391) return NULL;
if (!ret) {
log(ERROR, "nettle seems to have failed");
return NULL;
}
uint8_t b32addr[32];
SHA256(bindest, 391, b32addr);
struct sha256_ctx s2ctx;
nettle_sha256_init(&s2ctx);
nettle_sha256_update(&s2ctx, 391, bindest);
nettle_sha256_digest(&s2ctx, 32, b32addr);
char *b32text = b32enc(b32addr, 32);
if (!b32text) {
b32fail: