From 7fb978bf21e21a1de36777b45ea984bb1d5c52dd Mon Sep 17 00:00:00 2001 From: Kurt Roeckx Date: Mon, 19 Sep 2016 22:05:15 +0200 Subject: [PATCH] Make it build using OpenSSL 1.1.0 --- bufferevent_openssl.c | 62 +++++++++++++++++------------------- openssl-compat.h | 33 +++++++++++++++++++ 5 files changed, 102 insertions(+), 63 deletions(-) create mode 100644 openssl-compat.h diff --git a/bufferevent_openssl.c b/bufferevent_openssl.c index 017bfce..b8a0fe0 100644 --- a/bufferevent_openssl.c +++ b/bufferevent_openssl.c @@ -66,6 +66,7 @@ #include #include #include +#include "openssl-compat.h" /* * Define an OpenSSL bio that targets a bufferevent. @@ -109,10 +110,8 @@ print_err(int val) static int bio_bufferevent_new(BIO *b) { - b->init = 0; - b->num = -1; - b->ptr = NULL; /* We'll be putting the bufferevent in this field.*/ - b->flags = 0; + BIO_set_init(b, 0); + BIO_set_data(b, NULL); /* We'll be putting the bufferevent in this field.*/ return 1; } @@ -122,12 +121,10 @@ bio_bufferevent_free(BIO *b) { if (!b) return 0; - if (b->shutdown) { - if (b->init && b->ptr) - bufferevent_free(b->ptr); - b->init = 0; - b->flags = 0; - b->ptr = NULL; + if (BIO_get_shutdown(b)) { + if (BIO_get_init(b) && BIO_get_data(b)) + bufferevent_free(BIO_get_data(b)); + BIO_free(b); } return 1; } @@ -143,10 +140,10 @@ bio_bufferevent_read(BIO *b, char *out, int outlen) if (!out) return 0; - if (!b->ptr) + if (!BIO_get_data(b)) return -1; - input = bufferevent_get_input(b->ptr); + input = bufferevent_get_input(BIO_get_data(b)); if (evbuffer_get_length(input) == 0) { /* If there's no data to read, say so. */ BIO_set_retry_read(b); @@ -162,13 +159,13 @@ bio_bufferevent_read(BIO *b, char *out, int outlen) static int bio_bufferevent_write(BIO *b, const char *in, int inlen) { - struct bufferevent *bufev = b->ptr; + struct bufferevent *bufev = BIO_get_data(b); struct evbuffer *output; size_t outlen; BIO_clear_retry_flags(b); - if (!b->ptr) + if (!BIO_get_data(b)) return -1; output = bufferevent_get_output(bufev); @@ -194,15 +191,15 @@ bio_bufferevent_write(BIO *b, const char *in, int inlen) static long bio_bufferevent_ctrl(BIO *b, int cmd, long num, void *ptr) { - struct bufferevent *bufev = b->ptr; + struct bufferevent *bufev = BIO_get_data(b); long ret = 1; switch (cmd) { case BIO_CTRL_GET_CLOSE: - ret = b->shutdown; + ret = BIO_get_shutdown(b); break; case BIO_CTRL_SET_CLOSE: - b->shutdown = (int)num; + BIO_set_shutdown(b, (int)num); break; case BIO_CTRL_PENDING: ret = evbuffer_get_length(bufferevent_get_input(bufev)) != 0; @@ -231,23 +228,24 @@ bio_bufferevent_puts(BIO *b, const char *s) } /* Method table for the bufferevent BIO */ -static BIO_METHOD methods_bufferevent = { - BIO_TYPE_LIBEVENT, "bufferevent", - bio_bufferevent_write, - bio_bufferevent_read, - bio_bufferevent_puts, - NULL /* bio_bufferevent_gets */, - bio_bufferevent_ctrl, - bio_bufferevent_new, - bio_bufferevent_free, - NULL /* callback_ctrl */, -}; +static BIO_METHOD *methods_bufferevent; /* Return the method table for the bufferevents BIO */ static BIO_METHOD * BIO_s_bufferevent(void) { - return &methods_bufferevent; + if (methods_bufferevent == NULL) { + methods_bufferevent = BIO_meth_new(BIO_TYPE_LIBEVENT, "bufferevent"); + if (methods_bufferevent == NULL) + return NULL; + BIO_meth_set_write(methods_bufferevent, bio_bufferevent_write); + BIO_meth_set_read(methods_bufferevent, bio_bufferevent_read); + BIO_meth_set_puts(methods_bufferevent, bio_bufferevent_puts); + BIO_meth_set_ctrl(methods_bufferevent, bio_bufferevent_ctrl); + BIO_meth_set_create(methods_bufferevent, bio_bufferevent_new); + BIO_meth_set_destroy(methods_bufferevent, bio_bufferevent_free); + } + return methods_bufferevent; } /* Create a new BIO to wrap communication around a bufferevent. If close_flag @@ -260,9 +258,9 @@ BIO_new_bufferevent(struct bufferevent *bufferevent, int close_flag) return NULL; if (!(result = BIO_new(BIO_s_bufferevent()))) return NULL; - result->init = 1; - result->ptr = bufferevent; - result->shutdown = close_flag ? 1 : 0; + BIO_set_init(result, 1); + BIO_set_data(result, bufferevent); + BIO_set_shutdown(result, close_flag ? 1 : 0); return result; } diff --git a/openssl-compat.h b/openssl-compat.h new file mode 100644 index 0000000..e47bac6 --- /dev/null +++ b/openssl-compat.h @@ -0,0 +1,33 @@ +#ifndef OPENSSL_COMPAT_H +#define OPENSSL_COMPAT_H + +#if OPENSSL_VERSION_NUMBER < 0x10100000L + +static BIO_METHOD *BIO_meth_new(int type, const char *name) +{ + BIO_METHOD *biom = calloc(1, sizeof(BIO_METHOD)); + + if (biom != NULL) { + biom->type = type; + biom->name = name; + } + return biom; +} + +#define BIO_meth_set_write(b, f) b->bwrite = f +#define BIO_meth_set_read(b, f) b->bread = f +#define BIO_meth_set_puts(b, f) b->bputs = f +#define BIO_meth_set_ctrl(b, f) b->ctrl = f +#define BIO_meth_set_create(b, f) b->create = f +#define BIO_meth_set_destroy(b, f) b->destroy = f + +#define BIO_set_init(b, val) b->init = val +#define BIO_set_data(b, val) b->ptr = val +#define BIO_set_shutdown(b, val) b->shutdown = val +#define BIO_get_init(b) b->init +#define BIO_get_data(b) b->ptr +#define BIO_get_shutdown(b) b->shutdown + +#endif /* OPENSSL_VERSION_NUMBER < 0x10100000L */ + +#endif /* OPENSSL_COMPAT_H */