Added libcurl to libs

project/jni/curl/lib/sslgen.c

@@ -0,0 +1,472 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+/* This file is for implementing all "generic" SSL functions that all libcurl
+   internals should use. It is then responsible for calling the proper
+   "backend" function.
+
+   SSL-functions in libcurl should call functions in this source file, and not
+   to any specific SSL-layer.
+
+   Curl_ssl_ - prefix for generic ones
+   Curl_ossl_ - prefix for OpenSSL ones
+   Curl_gtls_ - prefix for GnuTLS ones
+   Curl_nss_ - prefix for NSS ones
+   Curl_polarssl_ - prefix for PolarSSL ones
+
+   Note that this source code uses curlssl_* functions, and they are all
+   defines/macros #defined by the lib-specific header files.
+
+   "SSL/TLS Strong Encryption: An Introduction"
+   http://httpd.apache.org/docs-2.0/ssl/ssl_intro.html
+*/
+
+#include "setup.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+
+#include "urldata.h"
+#define SSLGEN_C
+#include "sslgen.h" /* generic SSL protos etc */
+#include "ssluse.h" /* OpenSSL versions */
+#include "gtls.h"   /* GnuTLS versions */
+#include "nssg.h"   /* NSS versions */
+#include "qssl.h"   /* QSOSSL versions */
+#include "polarssl.h" /* PolarSSL versions */
+#include "sendf.h"
+#include "rawstr.h"
+#include "url.h"
+#include "curl_memory.h"
+#include "progress.h"
+/* The last #include file should be: */
+#include "memdebug.h"
+
+static bool safe_strequal(char* str1, char* str2)
+{
+  if(str1 && str2)
+    /* both pointers point to something then compare them */
+    return (bool)(0 != Curl_raw_equal(str1, str2));
+  else
+    /* if both pointers are NULL then treat them as equal */
+    return (bool)(!str1 && !str2);
+}
+
+bool
+Curl_ssl_config_matches(struct ssl_config_data* data,
+                        struct ssl_config_data* needle)
+{
+  if((data->version == needle->version) &&
+     (data->verifypeer == needle->verifypeer) &&
+     (data->verifyhost == needle->verifyhost) &&
+     safe_strequal(data->CApath, needle->CApath) &&
+     safe_strequal(data->CAfile, needle->CAfile) &&
+     safe_strequal(data->random_file, needle->random_file) &&
+     safe_strequal(data->egdsocket, needle->egdsocket) &&
+     safe_strequal(data->cipher_list, needle->cipher_list))
+    return TRUE;
+
+  return FALSE;
+}
+
+bool
+Curl_clone_ssl_config(struct ssl_config_data *source,
+                      struct ssl_config_data *dest)
+{
+  dest->sessionid = source->sessionid;
+  dest->verifyhost = source->verifyhost;
+  dest->verifypeer = source->verifypeer;
+  dest->version = source->version;
+
+  if(source->CAfile) {
+    dest->CAfile = strdup(source->CAfile);
+    if(!dest->CAfile)
+      return FALSE;
+  }
+  else
+    dest->CAfile = NULL;
+
+  if(source->CApath) {
+    dest->CApath = strdup(source->CApath);
+    if(!dest->CApath)
+      return FALSE;
+  }
+  else
+    dest->CApath = NULL;
+
+  if(source->cipher_list) {
+    dest->cipher_list = strdup(source->cipher_list);
+    if(!dest->cipher_list)
+      return FALSE;
+  }
+  else
+    dest->cipher_list = NULL;
+
+  if(source->egdsocket) {
+    dest->egdsocket = strdup(source->egdsocket);
+    if(!dest->egdsocket)
+      return FALSE;
+  }
+  else
+    dest->egdsocket = NULL;
+
+  if(source->random_file) {
+    dest->random_file = strdup(source->random_file);
+    if(!dest->random_file)
+      return FALSE;
+  }
+  else
+    dest->random_file = NULL;
+
+  return TRUE;
+}
+
+void Curl_free_ssl_config(struct ssl_config_data* sslc)
+{
+  Curl_safefree(sslc->CAfile);
+  Curl_safefree(sslc->CApath);
+  Curl_safefree(sslc->cipher_list);
+  Curl_safefree(sslc->egdsocket);
+  Curl_safefree(sslc->random_file);
+}
+
+#ifdef USE_SSL
+
+/* "global" init done? */
+static bool init_ssl=FALSE;
+
+/**
+ * Global SSL init
+ *
+ * @retval 0 error initializing SSL
+ * @retval 1 SSL initialized successfully
+ */
+int Curl_ssl_init(void)
+{
+  /* make sure this is only done once */
+  if(init_ssl)
+    return 1;
+  init_ssl = TRUE; /* never again */
+
+  return curlssl_init();
+}
+
+
+/* Global cleanup */
+void Curl_ssl_cleanup(void)
+{
+  if(init_ssl) {
+    /* only cleanup if we did a previous init */
+    curlssl_cleanup();
+    init_ssl = FALSE;
+  }
+}
+
+CURLcode
+Curl_ssl_connect(struct connectdata *conn, int sockindex)
+{
+  CURLcode res;
+  /* mark this is being ssl-enabled from here on. */
+  conn->ssl[sockindex].use = TRUE;
+  conn->ssl[sockindex].state = ssl_connection_negotiating;
+
+  res = curlssl_connect(conn, sockindex);
+
+  if(!res)
+    Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
+
+  return res;
+}
+
+CURLcode
+Curl_ssl_connect_nonblocking(struct connectdata *conn, int sockindex,
+                             bool *done)
+{
+#ifdef curlssl_connect_nonblocking
+  CURLcode res;
+  /* mark this is being ssl requested from here on. */
+  conn->ssl[sockindex].use = TRUE;
+  res = curlssl_connect_nonblocking(conn, sockindex, done);
+  if(!res && *done == TRUE)
+    Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
+  return res;
+#else
+  *done = TRUE; /* fallback to BLOCKING */
+  conn->ssl[sockindex].use = TRUE;
+  return curlssl_connect(conn, sockindex);
+#endif /* non-blocking connect support */
+}
+
+/*
+ * Check if there's a session ID for the given connection in the cache, and if
+ * there's one suitable, it is provided. Returns TRUE when no entry matched.
+ */
+int Curl_ssl_getsessionid(struct connectdata *conn,
+                          void **ssl_sessionid,
+                          size_t *idsize) /* set 0 if unknown */
+{
+  struct curl_ssl_session *check;
+  struct SessionHandle *data = conn->data;
+  long i;
+
+  if(!conn->ssl_config.sessionid)
+    /* session ID re-use is disabled */
+    return TRUE;
+
+  for(i=0; i< data->set.ssl.numsessions; i++) {
+    check = &data->state.session[i];
+    if(!check->sessionid)
+      /* not session ID means blank entry */
+      continue;
+    if(Curl_raw_equal(conn->host.name, check->name) &&
+       (conn->remote_port == check->remote_port) &&
+       Curl_ssl_config_matches(&conn->ssl_config, &check->ssl_config)) {
+      /* yes, we have a session ID! */
+      data->state.sessionage++;            /* increase general age */
+      check->age = data->state.sessionage; /* set this as used in this age */
+      *ssl_sessionid = check->sessionid;
+      if(idsize)
+        *idsize = check->idsize;
+      return FALSE;
+    }
+  }
+  *ssl_sessionid = NULL;
+  return TRUE;
+}
+
+/*
+ * Kill a single session ID entry in the cache.
+ */
+static int kill_session(struct curl_ssl_session *session)
+{
+  if(session->sessionid) {
+    /* defensive check */
+
+    /* free the ID the SSL-layer specific way */
+    curlssl_session_free(session->sessionid);
+
+    session->sessionid=NULL;
+    session->age = 0; /* fresh */
+
+    Curl_free_ssl_config(&session->ssl_config);
+
+    Curl_safefree(session->name);
+    session->name = NULL; /* no name */
+
+    return 0; /* ok */
+  }
+  else
+    return 1;
+}
+
+/*
+ * Delete the given session ID from the cache.
+ */
+void Curl_ssl_delsessionid(struct connectdata *conn, void *ssl_sessionid)
+{
+  int i;
+  for(i=0; i< conn->data->set.ssl.numsessions; i++) {
+    struct curl_ssl_session *check = &conn->data->state.session[i];
+
+    if (check->sessionid == ssl_sessionid) {
+      kill_session(check);
+      break;
+    }
+  }
+}
+
+/*
+ * Store session id in the session cache. The ID passed on to this function
+ * must already have been extracted and allocated the proper way for the SSL
+ * layer. Curl_XXXX_session_free() will be called to free/kill the session ID
+ * later on.
+ */
+CURLcode Curl_ssl_addsessionid(struct connectdata *conn,
+                               void *ssl_sessionid,
+                               size_t idsize)
+{
+  long i;
+  struct SessionHandle *data=conn->data; /* the mother of all structs */
+  struct curl_ssl_session *store = &data->state.session[0];
+  long oldest_age=data->state.session[0].age; /* zero if unused */
+  char *clone_host;
+
+  /* Even though session ID re-use might be disabled, that only disables USING
+     IT. We still store it here in case the re-using is again enabled for an
+     upcoming transfer */
+
+  clone_host = strdup(conn->host.name);
+  if(!clone_host)
+    return CURLE_OUT_OF_MEMORY; /* bail out */
+
+  /* Now we should add the session ID and the host name to the cache, (remove
+     the oldest if necessary) */
+
+  /* find an empty slot for us, or find the oldest */
+  for(i=1; (i<data->set.ssl.numsessions) &&
+        data->state.session[i].sessionid; i++) {
+    if(data->state.session[i].age < oldest_age) {
+      oldest_age = data->state.session[i].age;
+      store = &data->state.session[i];
+    }
+  }
+  if(i == data->set.ssl.numsessions)
+    /* cache is full, we must "kill" the oldest entry! */
+    kill_session(store);
+  else
+    store = &data->state.session[i]; /* use this slot */
+
+  /* now init the session struct wisely */
+  store->sessionid = ssl_sessionid;
+  store->idsize = idsize;
+  store->age = data->state.sessionage;    /* set current age */
+  if (store->name)
+    /* free it if there's one already present */
+    free(store->name);
+  store->name = clone_host;               /* clone host name */
+  store->remote_port = conn->remote_port; /* port number */
+
+  if(!Curl_clone_ssl_config(&conn->ssl_config, &store->ssl_config))
+    return CURLE_OUT_OF_MEMORY;
+
+  return CURLE_OK;
+}
+
+
+void Curl_ssl_close_all(struct SessionHandle *data)
+{
+  long i;
+  /* kill the session ID cache */
+  if(data->state.session) {
+    for(i=0; i< data->set.ssl.numsessions; i++)
+      /* the single-killer function handles empty table slots */
+      kill_session(&data->state.session[i]);
+
+    /* free the cache data */
+    free(data->state.session);
+    data->state.session = NULL;
+  }
+
+  curlssl_close_all(data);
+}
+
+void Curl_ssl_close(struct connectdata *conn, int sockindex)
+{
+  DEBUGASSERT((sockindex <= 1) && (sockindex >= -1));
+  curlssl_close(conn, sockindex);
+}
+
+CURLcode Curl_ssl_shutdown(struct connectdata *conn, int sockindex)
+{
+  if(curlssl_shutdown(conn, sockindex))
+    return CURLE_SSL_SHUTDOWN_FAILED;
+
+  conn->ssl[sockindex].use = FALSE; /* get back to ordinary socket usage */
+  conn->ssl[sockindex].state = ssl_connection_none;
+
+  return CURLE_OK;
+}
+
+/* Selects an SSL crypto engine
+ */
+CURLcode Curl_ssl_set_engine(struct SessionHandle *data, const char *engine)
+{
+  return curlssl_set_engine(data, engine);
+}
+
+/* Selects the default SSL crypto engine
+ */
+CURLcode Curl_ssl_set_engine_default(struct SessionHandle *data)
+{
+  return curlssl_set_engine_default(data);
+}
+
+/* Return list of OpenSSL crypto engine names. */
+struct curl_slist *Curl_ssl_engines_list(struct SessionHandle *data)
+{
+  return curlssl_engines_list(data);
+}
+
+/*
+ * This sets up a session ID cache to the specified size. Make sure this code
+ * is agnostic to what underlying SSL technology we use.
+ */
+CURLcode Curl_ssl_initsessions(struct SessionHandle *data, long amount)
+{
+  struct curl_ssl_session *session;
+
+  if(data->state.session)
+    /* this is just a precaution to prevent multiple inits */
+    return CURLE_OK;
+
+  session = calloc(amount, sizeof(struct curl_ssl_session));
+  if(!session)
+    return CURLE_OUT_OF_MEMORY;
+
+  /* store the info in the SSL section */
+  data->set.ssl.numsessions = amount;
+  data->state.session = session;
+  data->state.sessionage = 1; /* this is brand new */
+  return CURLE_OK;
+}
+
+size_t Curl_ssl_version(char *buffer, size_t size)
+{
+  return curlssl_version(buffer, size);
+}
+
+/*
+ * This function tries to determine connection status.
+ *
+ * Return codes:
+ *     1 means the connection is still in place
+ *     0 means the connection has been closed
+ *    -1 means the connection status is unknown
+ */
+int Curl_ssl_check_cxn(struct connectdata *conn)
+{
+  return curlssl_check_cxn(conn);
+}
+
+bool Curl_ssl_data_pending(const struct connectdata *conn,
+                           int connindex)
+{
+  return curlssl_data_pending(conn, connindex);
+}
+
+void Curl_ssl_free_certinfo(struct SessionHandle *data)
+{
+  int i;
+  struct curl_certinfo *ci = &data->info.certs;
+  if(ci->num_of_certs) {
+    /* free all individual lists used */
+    for(i=0; i<ci->num_of_certs; i++)
+      curl_slist_free_all(ci->certinfo[i]);
+    free(ci->certinfo); /* free the actual array too */
+    ci->num_of_certs = 0;
+  }
+}
+#endif /* USE_SSL */