kalikaneko
commented
7 years ago Closed kalikaneko closed 5 years ago
kalikaneko
commented
7 years ago 
gdanezis
commented
7 years ago Ah yes. Currently it targets OpenSSL 1.0.x. The good people at OpenSSL have changed some of the API which breaks things a bit. There is already a port to a Dev version in a branch, and it does not take much work to port. However, what I am unsure about is the best strategy to support both, and at compile time ensure the right API is compiled.
kalikaneko
commented
7 years ago can you point me to that branch? I was having a look at porting it but cffi was beating me. what I've done in other projects is to include a switch:
#if OPENSSL_VERSION_NUMBER >= 0x10100001Lpython's cryptography has a cleaner switch, for instance:
HMAC_CTX *Cryptography_HMAC_CTX_new(void) {
#if CRYPTOGRAPHY_OPENSSL_110_OR_GREATER && !defined(LIBRESSL_VERSION_NUMBER)
return HMAC_CTX_new();
#else
/* This uses OPENSSL_zalloc in 1.1.0, which is malloc + memset */
HMAC_CTX *ctx = (HMAC_CTX *)OPENSSL_malloc(sizeof(HMAC_CTX));
memset(ctx, 0, sizeof(HMAC_CTX));
return ctx;
#endifI'll be happy to help testing this.
gdanezis
commented
7 years ago Well, it is the only branch on this repo called OpenSSL1.1 :-). Note that some of the code depends on a patch that was not accepted for the release version, about pairings. However, the rest concerns the new API for sigs an macs.
misaakidis
commented
6 years ago In fedora-based distros there is an OpenSSL 1.0 devel compatibility package:
dnf install compat-openssl10-devel --allowerasing
(disclaimer: the above command will downgrade the version of openssl-devel already installed)
bogdan-kulynych
commented
6 years ago Now breaks on Ubuntu 18.04:
Running setup.py install for petlib ... error
Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-FFTMRA/petlib/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-QLHOzd-record/install-record.txt --single-version-externally-managed --compile:
running install
running build
running build_py
creating build
creating build/lib.linux-x86_64-2.7
creating build/lib.linux-x86_64-2.7/petlib
copying petlib/ecdsa.py -> build/lib.linux-x86_64-2.7/petlib
copying petlib/bn.py -> build/lib.linux-x86_64-2.7/petlib
copying petlib/cipher.py -> build/lib.linux-x86_64-2.7/petlib
copying petlib/ec.py -> build/lib.linux-x86_64-2.7/petlib
copying petlib/compile.py -> build/lib.linux-x86_64-2.7/petlib
copying petlib/pack.py -> build/lib.linux-x86_64-2.7/petlib
copying petlib/bindings.py -> build/lib.linux-x86_64-2.7/petlib
copying petlib/hmac.py -> build/lib.linux-x86_64-2.7/petlib
copying petlib/__init__.py -> build/lib.linux-x86_64-2.7/petlib
running build_ext
generating cffi module 'build/temp.linux-x86_64-2.7/petlib._petlib.c'
creating build/temp.linux-x86_64-2.7
building 'petlib._petlib' extension
creating build/temp.linux-x86_64-2.7/build
creating build/temp.linux-x86_64-2.7/build/temp.linux-x86_64-2.7
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-nbjU53/python2.7-2.7.15~rc1=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c build/temp.linux-x86_64-2.7/petlib._petlib.c -o build/temp.linux-x86_64-2.7/build/temp.linux-x86_64-2.7/petlib._petlib.o -Wno-deprecated-declarations
build/temp.linux-x86_64-2.7/petlib._petlib.c: In function ‘hmac_ctx_size’:
build/temp.linux-x86_64-2.7/petlib._petlib.c:521:19: error: invalid application of ‘sizeof’ to incomplete type ‘HMAC_CTX {aka struct hmac_ctx_st}’
return sizeof(HMAC_CTX);
^~~~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c: At top level:
build/temp.linux-x86_64-2.7/petlib._petlib.c:525:41: error: macro "ERR_load_crypto_strings" passed 1 arguments, but takes just 0
extern void ERR_load_crypto_strings(void);
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:527:34: error: macro "ERR_free_strings" passed 1 arguments, but takes just 0
extern void ERR_free_strings(void);
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:594:5: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
int setup_ssl_threads() {
^~~~~~~~~~~~~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:1096:56: error: field ‘y’ has incomplete type
struct _cffi_align_typedef_HMAC_CTX { char x; HMAC_CTX y; };
^
build/temp.linux-x86_64-2.7/petlib._petlib.c: In function ‘_cffi_d_BN_init’:
build/temp.linux-x86_64-2.7/petlib._petlib.c:1941:3: warning: implicit declaration of function ‘BN_init’; did you mean ‘BN_print’? [-Wimplicit-function-declaration]
BN_init(x0);
^~~~~~~
BN_print
build/temp.linux-x86_64-2.7/petlib._petlib.c: In function ‘_cffi_d_CRYPTO_lock’:
build/temp.linux-x86_64-2.7/petlib._petlib.c:3072:3: warning: implicit declaration of function ‘CRYPTO_lock’; did you mean ‘CRYPTO_free’? [-Wimplicit-function-declaration]
CRYPTO_lock(x0, x1, x2, x3);
^~~~~~~~~~~
CRYPTO_free
build/temp.linux-x86_64-2.7/petlib._petlib.c: In function ‘_cffi_d_HMAC_CTX_cleanup’:
build/temp.linux-x86_64-2.7/petlib._petlib.c:7254:3: warning: implicit declaration of function ‘HMAC_CTX_cleanup’; did you mean ‘HMAC_CTX_get_md’? [-Wimplicit-function-declaration]
HMAC_CTX_cleanup(x0);
^~~~~~~~~~~~~~~~
HMAC_CTX_get_md
build/temp.linux-x86_64-2.7/petlib._petlib.c: In function ‘_cffi_d_HMAC_CTX_init’:
build/temp.linux-x86_64-2.7/petlib._petlib.c:7290:3: warning: implicit declaration of function ‘HMAC_CTX_init’; did you mean ‘HMAC_CTX_new’? [-Wimplicit-function-declaration]
HMAC_CTX_init(x0);
^~~~~~~~~~~~~
HMAC_CTX_new
build/temp.linux-x86_64-2.7/petlib._petlib.c: In function ‘_cffi_checkfld__ECDSA_SIG’:
build/temp.linux-x86_64-2.7/petlib._petlib.c:7956:23: error: dereferencing pointer to incomplete type ‘ECDSA_SIG {aka struct ECDSA_SIG_st}’
{ BIGNUM * *tmp = &p->r; (void)tmp; }
^~
build/temp.linux-x86_64-2.7/petlib._petlib.c: At top level:
build/temp.linux-x86_64-2.7/petlib._petlib.c:7959:51: error: field ‘y’ has incomplete type
struct _cffi_align__ECDSA_SIG { char x; ECDSA_SIG y; };
^
build/temp.linux-x86_64-2.7/petlib._petlib.c: In function ‘_cffi_checkfld__EVP_CIPHER_CTX’:
build/temp.linux-x86_64-2.7/petlib._petlib.c:7966:33: error: dereferencing pointer to incomplete type ‘EVP_CIPHER_CTX {aka struct evp_cipher_ctx_st}’
{ EVP_CIPHER const * *tmp = &p->cipher; (void)tmp; }
^~
build/temp.linux-x86_64-2.7/petlib._petlib.c: At top level:
build/temp.linux-x86_64-2.7/petlib._petlib.c:7975:61: error: field ‘y’ has incomplete type
struct _cffi_align__EVP_CIPHER_CTX { char x; EVP_CIPHER_CTX y; };
^
build/temp.linux-x86_64-2.7/petlib._petlib.c: In function ‘_cffi_checkfld__EVP_CIPHER’:
build/temp.linux-x86_64-2.7/petlib._petlib.c:7982:12: error: dereferencing pointer to incomplete type ‘EVP_CIPHER {aka struct evp_cipher_st}’
(void)((p->nid) | 0); /* check that 'EVP_CIPHER.nid' is an integer */
^~
build/temp.linux-x86_64-2.7/petlib._petlib.c: At top level:
build/temp.linux-x86_64-2.7/petlib._petlib.c:7988:53: error: field ‘y’ has incomplete type
struct _cffi_align__EVP_CIPHER { char x; EVP_CIPHER y; };
^
In file included from /usr/include/sched.h:29:0,
from /usr/include/pthread.h:23,
from /usr/include/openssl/crypto.h:410,
from /usr/include/openssl/bio.h:20,
from /usr/include/openssl/err.h:21,
from build/temp.linux-x86_64-2.7/petlib._petlib.c:494:
build/temp.linux-x86_64-2.7/petlib._petlib.c:8149:10: error: invalid use of incomplete typedef ‘ECDSA_SIG {aka struct ECDSA_SIG_st}’
{ "r", offsetof(ECDSA_SIG, r),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8152:10: error: invalid use of incomplete typedef ‘ECDSA_SIG {aka struct ECDSA_SIG_st}’
{ "s", offsetof(ECDSA_SIG, s),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8155:15: error: invalid use of incomplete typedef ‘EVP_CIPHER_CTX {aka struct evp_cipher_ctx_st}’
{ "cipher", offsetof(EVP_CIPHER_CTX, cipher),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8158:16: error: invalid use of incomplete typedef ‘EVP_CIPHER_CTX {aka struct evp_cipher_ctx_st}’
{ "encrypt", offsetof(EVP_CIPHER_CTX, encrypt),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8161:16: error: invalid use of incomplete typedef ‘EVP_CIPHER_CTX {aka struct evp_cipher_ctx_st}’
{ "buf_len", offsetof(EVP_CIPHER_CTX, buf_len),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8164:12: error: invalid use of incomplete typedef ‘EVP_CIPHER_CTX {aka struct evp_cipher_ctx_st}’
{ "num", offsetof(EVP_CIPHER_CTX, num),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8167:16: error: invalid use of incomplete typedef ‘EVP_CIPHER_CTX {aka struct evp_cipher_ctx_st}’
{ "key_len", offsetof(EVP_CIPHER_CTX, key_len),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8170:14: error: invalid use of incomplete typedef ‘EVP_CIPHER_CTX {aka struct evp_cipher_ctx_st}’
{ "flags", offsetof(EVP_CIPHER_CTX, flags),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8173:19: error: invalid use of incomplete typedef ‘EVP_CIPHER_CTX {aka struct evp_cipher_ctx_st}’
{ "final_used", offsetof(EVP_CIPHER_CTX, final_used),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8176:19: error: invalid use of incomplete typedef ‘EVP_CIPHER_CTX {aka struct evp_cipher_ctx_st}’
{ "block_mask", offsetof(EVP_CIPHER_CTX, block_mask),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8179:12: error: invalid use of incomplete typedef ‘EVP_CIPHER {aka struct evp_cipher_st}’
{ "nid", offsetof(EVP_CIPHER, nid),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8182:19: error: invalid use of incomplete typedef ‘EVP_CIPHER {aka struct evp_cipher_st}’
{ "block_size", offsetof(EVP_CIPHER, block_size),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8185:16: error: invalid use of incomplete typedef ‘EVP_CIPHER {aka struct evp_cipher_st}’
{ "key_len", offsetof(EVP_CIPHER, key_len),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8188:15: error: invalid use of incomplete typedef ‘EVP_CIPHER {aka struct evp_cipher_st}’
{ "iv_len", offsetof(EVP_CIPHER, iv_len),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8191:14: error: invalid use of incomplete typedef ‘EVP_CIPHER {aka struct evp_cipher_st}’
{ "flags", offsetof(EVP_CIPHER, flags),
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8216:12: error: invalid application of ‘sizeof’ to incomplete type ‘HMAC_CTX {aka struct hmac_ctx_st}’
sizeof(HMAC_CTX), offsetof(struct _cffi_align_typedef_HMAC_CTX, y), 2, 0 },
^~~~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8216:5: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
sizeof(HMAC_CTX), offsetof(struct _cffi_align_typedef_HMAC_CTX, y), 2, 0 },
^~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8216:5: note: (near initialization for ‘_cffi_struct_unions[9].size’)
build/temp.linux-x86_64-2.7/petlib._petlib.c:8216:5: error: initializer element is not constant
build/temp.linux-x86_64-2.7/petlib._petlib.c:8216:5: note: (near initialization for ‘_cffi_struct_unions[9].size’)
build/temp.linux-x86_64-2.7/petlib._petlib.c:8216:23: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
sizeof(HMAC_CTX), offsetof(struct _cffi_align_typedef_HMAC_CTX, y), 2, 0 },
^~~~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8216:23: note: (near initialization for ‘_cffi_struct_unions[9].alignment’)
In file included from /usr/include/sched.h:29:0,
from /usr/include/pthread.h:23,
from /usr/include/openssl/crypto.h:410,
from /usr/include/openssl/bio.h:20,
from /usr/include/openssl/err.h:21,
from build/temp.linux-x86_64-2.7/petlib._petlib.c:494:
build/temp.linux-x86_64-2.7/petlib._petlib.c:8216:23: error: initializer element is not constant
sizeof(HMAC_CTX), offsetof(struct _cffi_align_typedef_HMAC_CTX, y), 2, 0 },
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8216:23: note: (near initialization for ‘_cffi_struct_unions[9].alignment’)
build/temp.linux-x86_64-2.7/petlib._petlib.c:8218:12: error: invalid application of ‘sizeof’ to incomplete type ‘ECDSA_SIG {aka struct ECDSA_SIG_st}’
sizeof(ECDSA_SIG), offsetof(struct _cffi_align__ECDSA_SIG, y), 2, 2 },
^~~~~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8218:5: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
sizeof(ECDSA_SIG), offsetof(struct _cffi_align__ECDSA_SIG, y), 2, 2 },
^~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8218:5: note: (near initialization for ‘_cffi_struct_unions[10].size’)
build/temp.linux-x86_64-2.7/petlib._petlib.c:8218:5: error: initializer element is not constant
build/temp.linux-x86_64-2.7/petlib._petlib.c:8218:5: note: (near initialization for ‘_cffi_struct_unions[10].size’)
build/temp.linux-x86_64-2.7/petlib._petlib.c:8218:24: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
sizeof(ECDSA_SIG), offsetof(struct _cffi_align__ECDSA_SIG, y), 2, 2 },
^~~~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8218:24: note: (near initialization for ‘_cffi_struct_unions[10].alignment’)
In file included from /usr/include/sched.h:29:0,
from /usr/include/pthread.h:23,
from /usr/include/openssl/crypto.h:410,
from /usr/include/openssl/bio.h:20,
from /usr/include/openssl/err.h:21,
from build/temp.linux-x86_64-2.7/petlib._petlib.c:494:
build/temp.linux-x86_64-2.7/petlib._petlib.c:8218:24: error: initializer element is not constant
sizeof(ECDSA_SIG), offsetof(struct _cffi_align__ECDSA_SIG, y), 2, 2 },
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8218:24: note: (near initialization for ‘_cffi_struct_unions[10].alignment’)
build/temp.linux-x86_64-2.7/petlib._petlib.c:8220:12: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_CIPHER_CTX {aka struct evp_cipher_ctx_st}’
sizeof(EVP_CIPHER_CTX), offsetof(struct _cffi_align__EVP_CIPHER_CTX, y), 4, 8 },
^~~~~~~~~~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8220:5: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
sizeof(EVP_CIPHER_CTX), offsetof(struct _cffi_align__EVP_CIPHER_CTX, y), 4, 8 },
^~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8220:5: note: (near initialization for ‘_cffi_struct_unions[11].size’)
build/temp.linux-x86_64-2.7/petlib._petlib.c:8220:5: error: initializer element is not constant
build/temp.linux-x86_64-2.7/petlib._petlib.c:8220:5: note: (near initialization for ‘_cffi_struct_unions[11].size’)
build/temp.linux-x86_64-2.7/petlib._petlib.c:8220:29: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
sizeof(EVP_CIPHER_CTX), offsetof(struct _cffi_align__EVP_CIPHER_CTX, y), 4, 8 },
^~~~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8220:29: note: (near initialization for ‘_cffi_struct_unions[11].alignment’)
In file included from /usr/include/sched.h:29:0,
from /usr/include/pthread.h:23,
from /usr/include/openssl/crypto.h:410,
from /usr/include/openssl/bio.h:20,
from /usr/include/openssl/err.h:21,
from build/temp.linux-x86_64-2.7/petlib._petlib.c:494:
build/temp.linux-x86_64-2.7/petlib._petlib.c:8220:29: error: initializer element is not constant
sizeof(EVP_CIPHER_CTX), offsetof(struct _cffi_align__EVP_CIPHER_CTX, y), 4, 8 },
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8220:29: note: (near initialization for ‘_cffi_struct_unions[11].alignment’)
build/temp.linux-x86_64-2.7/petlib._petlib.c:8222:12: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_CIPHER {aka struct evp_cipher_st}’
sizeof(EVP_CIPHER), offsetof(struct _cffi_align__EVP_CIPHER, y), 12, 5 },
^~~~~~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8222:5: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
sizeof(EVP_CIPHER), offsetof(struct _cffi_align__EVP_CIPHER, y), 12, 5 },
^~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8222:5: note: (near initialization for ‘_cffi_struct_unions[12].size’)
build/temp.linux-x86_64-2.7/petlib._petlib.c:8222:5: error: initializer element is not constant
build/temp.linux-x86_64-2.7/petlib._petlib.c:8222:5: note: (near initialization for ‘_cffi_struct_unions[12].size’)
build/temp.linux-x86_64-2.7/petlib._petlib.c:8222:25: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
sizeof(EVP_CIPHER), offsetof(struct _cffi_align__EVP_CIPHER, y), 12, 5 },
^~~~~~~~
build/temp.linux-x86_64-2.7/petlib._petlib.c:8222:25: note: (near initialization for ‘_cffi_struct_unions[12].alignment’)
In file included from /usr/include/sched.h:29:0,
from /usr/include/pthread.h:23,
from /usr/include/openssl/crypto.h:410,
from /usr/include/openssl/bio.h:20,
from /usr/include/openssl/err.h:21,
from build/temp.linux-x86_64-2.7/petlib._petlib.c:494:
build/temp.linux-x86_64-2.7/petlib._petlib.c:8222:25: error: initializer element is not constant
sizeof(EVP_CIPHER), offsetof(struct _cffi_align__EVP_CIPHER, y), 12, 5 },
^
build/temp.linux-x86_64-2.7/petlib._petlib.c:8222:25: note: (near initialization for ‘_cffi_struct_unions[12].alignment’)
build/temp.linux-x86_64-2.7/petlib._petlib.c: In function ‘hmac_ctx_size’:
build/temp.linux-x86_64-2.7/petlib._petlib.c:522:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
At top level:
build/temp.linux-x86_64-2.7/petlib._petlib.c:566:13: warning: ‘_ssl_thread_locking_function’ defined but not used [-Wunused-function]
static void _ssl_thread_locking_function(int mode, int n, const char *file,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
azul
commented
5 years ago I also just hit this. @gdanezis could you take a look at the pr?
lovesh
commented
5 years ago Same problem
azul
commented
5 years ago workaround for me for now was:
sudo apt install libssl1.0-dev @azul This would uninstall existing (1.1) libssl-dev and don't know what that might break. I ended up installing the code from this PR and copying _cffi_src in the installed location for petlib and petlib installs. But now bplib cannot be uninstalled. This is the error i get
bplib/src/bp_g2_mult.c:236:41: error: ‘CRYPTO_LOCK_EC_PRE_COMP’ undeclared (first use in this function)
CRYPTO_add(&pre->references, 1, CRYPTO_LOCK_EC_PRE_COMP);
^~~~~~~~~~~~~~~~~~~~~~~
bplib/src/bp_g2_mult.c:236:41: note: each undeclared identifier is reported only once for each function it appears in
bplib/src/bp_g2_mult.c: In function ‘g2_pre_comp_free’:
bplib/src/bp_g2_mult.c:243:45: error: ‘CRYPTO_LOCK_EC_PRE_COMP’ undeclared (first use in this function)
|| CRYPTO_add(&pre->references, -1, CRYPTO_LOCK_EC_PRE_COMP) > 0)
^~~~~~~~~~~~~~~~~~~~~~~
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1@lovesh Can you tell why did you have to move _cffi_src?
Installing petlib stratight from the fork should work. Can you try this command and tell if bplib still breaks?
pip install -e git+git@github.com:bogdan-kulynych/petlib.git@48a8d614743ef9396d80a76d3636749d103ddb3b#egg=petlibThe error you got is most likely not related to petlib though. It looks like the openssl version mismatch.
lovesh
commented
5 years ago @bogdan-kulynych I did not use pip but downloaded the code locally and then installed it. It was giving this error
FileNotFoundError: [Errno 2] No such file or directory: '/home/lovesh/.virtualenvs/coconut/lib/python3.5/site-packages/petlib-0.0.44-py3.5-linux-x86_64.egg/petlib/_cffi_src/openssl/openssl_v1_1.h'So i had moved _cffi_src under petlib
I removed petlib and again installed it using pip install -e git+git@github.com:bogdan-kulynych/petlib.git@48a8d614743ef9396d80a76d3636749d103ddb3b#egg=petlib but the same error
ossdev07
commented
5 years ago @gdanezis do you have any clue how to support both version of openssl (1.0.x and 1.1.x) and resolve their dependencies at run-time ..