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home:dirkmueller:acdc:as_python3_module
python-rpm.20166
libgcrypt.diff
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File libgcrypt.diff of Package python-rpm.20166
--- ./configure.ac.orig 2019-12-05 15:51:12.366000367 +0000 +++ ./configure.ac 2019-12-05 15:51:24.345969493 +0000 @@ -274,7 +274,7 @@ AM_CONDITIONAL(LIBDWARF,[test "$WITH_LIB # Select crypto library AC_ARG_WITH(crypto, [AC_HELP_STRING([--with-crypto=CRYPTO_LIB], - [The cryptographic library to use (nss|beecrypt|openssl). The default is nss.]) + [The cryptographic library to use (nss|beecrypt|openssl|libgcrypt). The default is nss.]) ],[], [with_crypto=nss]) @@ -393,6 +393,25 @@ AC_SUBST(WITH_OPENSSL_INCLUDE) AC_SUBST(WITH_OPENSSL_LIB) #================= +# Check for libgcrypt library. +WITH_LIBGCRYPT_INCLUDE= +WITH_LIBGCRYPT_LIB= +if test "$with_crypto" = libgcrypt ; then +AC_PATH_TOOL(LIBGCRYPT_CONFIG, libgcrypt-config, notfound) +if test notfound != "$LIBGCRYPT_CONFIG" ; then +WITH_LIBGCRYPT_INCLUDE=`$LIBGCRYPT_CONFIG --cflags` +WITH_LIBGCRYPT_LIB=`$LIBGCRYPT_CONFIG --libs` +fi +if test -z "$WITH_LIBGCRYPT_LIB" ; then +AC_MSG_ERROR([libgcrypt not found]) +fi +fi + +AM_CONDITIONAL([WITH_LIBGCRYPT],[test "$with_crypto" = libgcrypt]) +AC_SUBST(WITH_LIBGCRYPT_INCLUDE) +AC_SUBST(WITH_LIBGCRYPT_LIB) + +#================= # Check for NSS library. # We need nss.h from NSS which needs nspr.h. Unfortunately both glibc and NSS # have a header named nss.h... so make extra check for NSS's sechash.h --- ./rpmio/Makefile.am.orig 2017-10-05 10:04:57.553602041 +0000 +++ ./rpmio/Makefile.am 2019-12-05 15:51:24.345969493 +0000 @@ -7,6 +7,7 @@ AM_CPPFLAGS = -I$(top_builddir) -I$(top_ AM_CPPFLAGS += @WITH_NSS_INCLUDE@ AM_CPPFLAGS += @WITH_BEECRYPT_INCLUDE@ AM_CPPFLAGS += @WITH_OPENSSL_INCLUDE@ +AM_CPPFLAGS += @WITH_LIBGCRYPT_INCLUDE@ AM_CPPFLAGS += @WITH_POPT_INCLUDE@ AM_CPPFLAGS += $(ZSTD_CFLAGS) AM_CPPFLAGS += -I$(top_srcdir)/misc @@ -29,9 +30,13 @@ else if WITH_OPENSSL librpmio_la_SOURCES += digest_openssl.c else +if WITH_LIBGCRYPT +librpmio_la_SOURCES += digest_libgcrypt.c +else librpmio_la_SOURCES += digest_nss.c endif endif +endif librpmio_la_LDFLAGS = -version-info $(rpm_version_info) @@ -40,6 +45,7 @@ librpmio_la_LIBADD = \ @WITH_NSS_LIB@ \ @WITH_BEECRYPT_LIB@ \ @WITH_OPENSSL_LIB@ \ + @WITH_LIBGCRYPT_LIB@ \ @WITH_BZ2_LIB@ \ @WITH_ZLIB_LIB@ \ @WITH_LIBELF_LIB@ \ --- ./rpmio/digest_libgcrypt.c.orig 2019-12-05 15:51:24.345969493 +0000 +++ ./rpmio/digest_libgcrypt.c 2019-12-05 15:51:24.345969493 +0000 @@ -0,0 +1,406 @@ +#include "system.h" + +#include <gcrypt.h> + +#include <rpm/rpmpgp.h> +#include "rpmio/digest.h" +#include "rpmio/rpmio_internal.h" +#include "debug.h" + +/** + * MD5/SHA1 digest private data. + */ +struct DIGEST_CTX_s { + rpmDigestFlags flags; /*!< Bit(s) to control digest operation. */ + int algo; /*!< Used hash algorithm */ + gcry_md_hd_t h; +}; + + +/**************************** init ************************************/ + +int rpmInitCrypto(void) { + gcry_check_version(NULL); + gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0); + return 0; +} + +int rpmFreeCrypto(void) { + return 0; +} + +/**************************** digest ************************************/ + +size_t rpmDigestLength(int hashalgo) +{ + switch (hashalgo) { + case PGPHASHALGO_MD5: + return 16; + case PGPHASHALGO_SHA1: + return 20; + case PGPHASHALGO_SHA224: + return 28; + case PGPHASHALGO_SHA256: + return 32; + case PGPHASHALGO_SHA384: + return 48; + case PGPHASHALGO_SHA512: + return 64; + default: + return 0; + } +} + +static int hashalgo2gcryalgo(int hashalgo) +{ + switch (hashalgo) { + case PGPHASHALGO_MD5: + return GCRY_MD_MD5; + case PGPHASHALGO_SHA1: + return GCRY_MD_SHA1; + case PGPHASHALGO_SHA224: + return GCRY_MD_SHA224; + case PGPHASHALGO_SHA256: + return GCRY_MD_SHA256; + case PGPHASHALGO_SHA384: + return GCRY_MD_SHA384; + case PGPHASHALGO_SHA512: + return GCRY_MD_SHA512; + default: + return 0; + } +} + +DIGEST_CTX rpmDigestInit(int hashalgo, rpmDigestFlags flags) +{ + gcry_md_hd_t h; + DIGEST_CTX ctx; + int gcryalgo = hashalgo2gcryalgo(hashalgo); + + if (!gcryalgo || gcry_md_open(&h, gcryalgo, 0) != 0) + return NULL; + + ctx = xcalloc(1, sizeof(*ctx)); + ctx->flags = flags; + ctx->algo = hashalgo; + ctx->h = h; + return ctx; +} + +int rpmDigestUpdate(DIGEST_CTX ctx, const void * data, size_t len) +{ + if (ctx == NULL) + return -1; + gcry_md_write(ctx->h, data, len); + return 0; +} + +int rpmDigestFinal(DIGEST_CTX ctx, void ** datap, size_t *lenp, int asAscii) +{ + unsigned char *digest; + int digestlen; + if (ctx == NULL) + return -1; + digest = gcry_md_read(ctx->h, 0); + digestlen = rpmDigestLength(ctx->algo); + if (!asAscii) { + if (lenp) + *lenp = digestlen; + if (datap) { + *datap = xmalloc(digestlen); + memcpy(*datap, digest, digestlen); + } + } else { + if (lenp) + *lenp = 2 * digestlen + 1; + if (datap) { + *datap = pgpHexStr((const uint8_t *)digest, digestlen); + } + } + gcry_md_close(ctx->h); + free(ctx); + return 0; +} + +DIGEST_CTX rpmDigestDup(DIGEST_CTX octx) +{ + DIGEST_CTX nctx = NULL; + if (octx) { + gcry_md_hd_t h; + if (gcry_md_copy(&h, octx->h)) + return NULL; + nctx = memcpy(xcalloc(1, sizeof(*nctx)), octx, sizeof(*nctx)); + nctx->h = h; + } + return nctx; +} + + +/****************************** RSA **************************************/ + +struct pgpDigSigRSA_s { + gcry_mpi_t s; +}; + +struct pgpDigKeyRSA_s { + gcry_mpi_t n; + gcry_mpi_t e; +}; + +static int pgpSetSigMpiRSA(pgpDigAlg pgpsig, int num, const uint8_t *p) +{ + struct pgpDigSigRSA_s *sig = pgpsig->data; + int mlen = pgpMpiLen(p); + int rc = 1; + + if (!sig) + sig = pgpsig->data = xcalloc(1, sizeof(*sig)); + + switch (num) { + case 0: + if (!gcry_mpi_scan(&sig->s, GCRYMPI_FMT_PGP, p, mlen, NULL)) + rc = 0; + break; + } + return rc; +} + +static int pgpSetKeyMpiRSA(pgpDigAlg pgpkey, int num, const uint8_t *p) +{ + struct pgpDigKeyRSA_s *key = pgpkey->data; + int mlen = pgpMpiLen(p); + int rc = 1; + + if (!key) + key = pgpkey->data = xcalloc(1, sizeof(*key)); + + switch (num) { + case 0: + if (!gcry_mpi_scan(&key->n, GCRYMPI_FMT_PGP, p, mlen, NULL)) + rc = 0; + break; + case 1: + if (!gcry_mpi_scan(&key->e, GCRYMPI_FMT_PGP, p, mlen, NULL)) + rc = 0; + break; + } + return rc; +} + +static int pgpVerifySigRSA(pgpDigAlg pgpkey, pgpDigAlg pgpsig, uint8_t *hash, size_t hashlen, int hash_algo) +{ + struct pgpDigKeyRSA_s *key = pgpkey->data; + struct pgpDigSigRSA_s *sig = pgpsig->data; + gcry_sexp_t sexp_sig = NULL, sexp_data = NULL, sexp_pkey = NULL; + const char *hash_algo_name; + int rc = 1; + + if (!sig || !key) + return rc; + + hash_algo_name = gcry_md_algo_name(hashalgo2gcryalgo(hash_algo)); + gcry_sexp_build(&sexp_sig, NULL, "(sig-val (rsa (s %M)))", sig->s); + gcry_sexp_build(&sexp_data, NULL, "(data (flags pkcs1) (hash %s %b))", hash_algo_name, (int)hashlen, (const char *)hash); + gcry_sexp_build(&sexp_pkey, NULL, "(public-key (rsa (n %M) (e %M)))", key->n, key->e); + if (sexp_sig && sexp_data && sexp_pkey) + rc = gcry_pk_verify(sexp_sig, sexp_data, sexp_pkey) == 0 ? 0 : 1; + gcry_sexp_release(sexp_sig); + gcry_sexp_release(sexp_data); + gcry_sexp_release(sexp_pkey); + return rc; +} + +static void pgpFreeSigRSA(pgpDigAlg pgpsig) +{ + struct pgpDigSigRSA_s *sig = pgpsig->data; + if (sig) { + gcry_mpi_release(sig->s); + pgpsig->data = _free(sig); + } +} + +static void pgpFreeKeyRSA(pgpDigAlg pgpkey) +{ + struct pgpDigKeyRSA_s *key = pgpkey->data; + if (key) { + gcry_mpi_release(key->n); + gcry_mpi_release(key->e); + pgpkey->data = _free(key); + } +} + + +/****************************** DSA **************************************/ + +struct pgpDigSigDSA_s { + gcry_mpi_t r; + gcry_mpi_t s; +}; + +struct pgpDigKeyDSA_s { + gcry_mpi_t p; + gcry_mpi_t q; + gcry_mpi_t g; + gcry_mpi_t y; +}; + +static int pgpSetSigMpiDSA(pgpDigAlg pgpsig, int num, const uint8_t *p) +{ + struct pgpDigSigDSA_s *sig = pgpsig->data; + int mlen = pgpMpiLen(p); + int rc = 1; + + if (!sig) + sig = pgpsig->data = xcalloc(1, sizeof(*sig)); + + switch (num) { + case 0: + if (!gcry_mpi_scan(&sig->r, GCRYMPI_FMT_PGP, p, mlen, NULL)) + rc = 0; + break; + case 1: + if (!gcry_mpi_scan(&sig->s, GCRYMPI_FMT_PGP, p, mlen, NULL)) + rc = 0; + break; + } + return rc; +} + +static int pgpSetKeyMpiDSA(pgpDigAlg pgpkey, int num, const uint8_t *p) +{ + struct pgpDigKeyDSA_s *key = pgpkey->data; + int mlen = pgpMpiLen(p); + int rc = 1; + + if (!key) + key = pgpkey->data = xcalloc(1, sizeof(*key)); + + switch (num) { + case 0: + if (!gcry_mpi_scan(&key->p, GCRYMPI_FMT_PGP, p, mlen, NULL)) + rc = 0; + break; + case 1: + if (!gcry_mpi_scan(&key->q, GCRYMPI_FMT_PGP, p, mlen, NULL)) + rc = 0; + break; + case 2: + if (!gcry_mpi_scan(&key->g, GCRYMPI_FMT_PGP, p, mlen, NULL)) + rc = 0; + break; + case 3: + if (!gcry_mpi_scan(&key->y, GCRYMPI_FMT_PGP, p, mlen, NULL)) + rc = 0; + break; + } + return rc; +} + +static int pgpVerifySigDSA(pgpDigAlg pgpkey, pgpDigAlg pgpsig, uint8_t *hash, size_t hashlen, int hash_algo) +{ + struct pgpDigKeyDSA_s *key = pgpkey->data; + struct pgpDigSigDSA_s *sig = pgpsig->data; + gcry_sexp_t sexp_sig = NULL, sexp_data = NULL, sexp_pkey = NULL; + int rc = 1; + + if (!sig || !key) + return rc; + + gcry_sexp_build(&sexp_sig, NULL, "(sig-val (dsa (r %M) (s %M)))", sig->r, sig->s); + gcry_sexp_build(&sexp_data, NULL, "(data (flags raw) (value %b))", (int)hashlen, (const char *)hash); + gcry_sexp_build(&sexp_pkey, NULL, "(public-key (dsa (p %M) (q %M) (g %M) (y %M)))", key->p, key->q, key->g, key->y); + if (sexp_sig && sexp_data && sexp_pkey) + rc = gcry_pk_verify(sexp_sig, sexp_data, sexp_pkey) == 0 ? 0 : 1; + gcry_sexp_release(sexp_sig); + gcry_sexp_release(sexp_data); + gcry_sexp_release(sexp_pkey); + return rc; +} + +static void pgpFreeSigDSA(pgpDigAlg pgpsig) +{ + struct pgpDigSigDSA_s *sig = pgpsig->data; + if (sig) { + gcry_mpi_release(sig->r); + gcry_mpi_release(sig->s); + pgpsig->data = _free(sig); + } +} + +static void pgpFreeKeyDSA(pgpDigAlg pgpkey) +{ + struct pgpDigKeyDSA_s *key = pgpkey->data; + if (key) { + gcry_mpi_release(key->p); + gcry_mpi_release(key->q); + gcry_mpi_release(key->g); + gcry_mpi_release(key->y); + pgpkey->data = _free(key); + } +} + + +/****************************** NULL **************************************/ + +static int pgpSetMpiNULL(pgpDigAlg pgpkey, int num, const uint8_t *p) +{ + return 1; +} + +static int pgpVerifyNULL(pgpDigAlg pgpkey, pgpDigAlg pgpsig, + uint8_t *hash, size_t hashlen, int hash_algo) +{ + return 1; +} + +pgpDigAlg pgpPubkeyNew(int algo) +{ + pgpDigAlg ka = xcalloc(1, sizeof(*ka));; + + switch (algo) { + case PGPPUBKEYALGO_RSA: + ka->setmpi = pgpSetKeyMpiRSA; + ka->free = pgpFreeKeyRSA; + ka->mpis = 2; + break; + case PGPPUBKEYALGO_DSA: + ka->setmpi = pgpSetKeyMpiDSA; + ka->free = pgpFreeKeyDSA; + ka->mpis = 4; + break; + default: + ka->setmpi = pgpSetMpiNULL; + ka->mpis = -1; + break; + } + + ka->verify = pgpVerifyNULL; /* keys can't be verified */ + + return ka; +} + +pgpDigAlg pgpSignatureNew(int algo) +{ + pgpDigAlg sa = xcalloc(1, sizeof(*sa)); + + switch (algo) { + case PGPPUBKEYALGO_RSA: + sa->setmpi = pgpSetSigMpiRSA; + sa->free = pgpFreeSigRSA; + sa->verify = pgpVerifySigRSA; + sa->mpis = 1; + break; + case PGPPUBKEYALGO_DSA: + sa->setmpi = pgpSetSigMpiDSA; + sa->free = pgpFreeSigDSA; + sa->verify = pgpVerifySigDSA; + sa->mpis = 2; + break; + default: + sa->setmpi = pgpSetMpiNULL; + sa->verify = pgpVerifyNULL; + sa->mpis = -1; + break; + } + return sa; +}
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