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author | Michael Steinert <mike.steinert@gmail.com> | 2012-05-24 17:41:36 -0600 |
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committer | Michael Steinert <mike.steinert@gmail.com> | 2012-05-27 10:39:57 -0600 |
commit | 5b2585dc118f3db07a70575da47503e24986f8e9 (patch) | |
tree | 4d68627311e1aa0b23e1e257d3e4ba52dc3623a1 /librabbitmq/amqp-cyassl.c | |
parent | ec9f03ce615713acfa1f2fb4a6da42a8c972e6e6 (diff) | |
download | rabbitmq-c-github-ask-5b2585dc118f3db07a70575da47503e24986f8e9.tar.gz |
Implement SSL/TLS over CyaSSL, GnuTLS, OpenSSL & PolarSSL backends
Signed-off-by: Michael Steinert <mike.steinert@gmail.com>
Diffstat (limited to 'librabbitmq/amqp-cyassl.c')
-rw-r--r-- | librabbitmq/amqp-cyassl.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/librabbitmq/amqp-cyassl.c b/librabbitmq/amqp-cyassl.c new file mode 100644 index 0000000..f8e4d40 --- /dev/null +++ b/librabbitmq/amqp-cyassl.c @@ -0,0 +1,167 @@ +/* + * Copyright 2012 Michael Steinert + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "amqp-ssl.h" +#include "amqp_private.h" +#include <cyassl/ssl.h> +#include <stdlib.h> + +struct amqp_ssl_socket_context { + CYASSL_CTX *ctx; + CYASSL *ssl; +}; + +static ssize_t +amqp_ssl_socket_send(AMQP_UNUSED int sockfd, + const void *buf, + size_t len, + AMQP_UNUSED int flags, + void *user_data) +{ + struct amqp_ssl_socket_context *self = user_data; + return CyaSSL_write(self->ssl, buf, len); +} + +static ssize_t +amqp_ssl_socket_writev(AMQP_UNUSED int sockfd, + const struct iovec *iov, + int iovcnt, + void *user_data) +{ + struct amqp_ssl_socket_context *self = user_data; + char *buffer, *bufferp; + ssize_t written = -1; + size_t bytes; + int i; + bytes = 0; + for (i = 0; i < iovcnt; ++i) { + bytes += iov[i].iov_len; + } + buffer = malloc(bytes); + if (!buffer) { + goto exit; + } + bufferp = buffer; + for (i = 0; i < iovcnt; ++i) { + memcpy(bufferp, iov[i].iov_base, iov[i].iov_len); + bufferp += iov[i].iov_len; + } + written = CyaSSL_write(self->ssl, buffer, bytes); +exit: + free(buffer); + return written; +} + +static ssize_t +amqp_ssl_socket_recv(AMQP_UNUSED int sockfd, + void *buf, + size_t len, + AMQP_UNUSED int flags, + void *user_data) +{ + struct amqp_ssl_socket_context *self = user_data; + return CyaSSL_read(self->ssl, buf, len); +} + +static int +amqp_ssl_socket_close(int sockfd, + void *user_data) +{ + int status = -1; + struct amqp_ssl_socket_context *self = user_data; + if (self) { + CyaSSL_free(self->ssl); + CyaSSL_CTX_free(self->ctx); + free(self); + } + if (sockfd >= 0) { + status = amqp_socket_close(sockfd, 0); + } + return status; +} + +static int +amqp_ssl_socket_error(AMQP_UNUSED void *user_data) +{ + return -1; +} + +int +amqp_open_ssl_socket(amqp_connection_state_t state, + const char *host, + int port, + const char *cacert, + const char *key, + const char *cert) +{ + int sockfd = -1, status; + struct amqp_ssl_socket_context *self; + CyaSSL_Init(); + self = calloc(1, sizeof(*self)); + if (!self) { + goto error; + } + self->ctx = CyaSSL_CTX_new(CyaSSLv23_client_method()); + if (!self->ctx) { + goto error; + } + status = CyaSSL_CTX_load_verify_locations(self->ctx, cacert, NULL); + if (SSL_SUCCESS != status) { + goto error; + } + if (key && cert) { + status = CyaSSL_CTX_use_PrivateKey_file(self->ctx, key, + SSL_FILETYPE_PEM); + if (SSL_SUCCESS != status) { + goto error; + } + status = CyaSSL_CTX_use_certificate_chain_file(self->ctx, cert); + } + self->ssl = CyaSSL_new(self->ctx); + if (!self->ssl) { + goto error; + } + sockfd = amqp_open_socket(host, port); + if (0 > sockfd) { + goto error; + } + CyaSSL_set_fd(self->ssl, sockfd); + status = CyaSSL_connect(self->ssl); + if (SSL_SUCCESS != status) { + goto error; + } + amqp_set_sockfd_full(state, sockfd, + amqp_ssl_socket_writev, + amqp_ssl_socket_send, + amqp_ssl_socket_recv, + amqp_ssl_socket_close, + amqp_ssl_socket_error, + self); + return sockfd; +error: + amqp_ssl_socket_close(sockfd, self); + return -1; +} |