diff options
Diffstat (limited to 'indra/llcorehttp/httpcommon.cpp')
| -rwxr-xr-x | indra/llcorehttp/httpcommon.cpp | 162 |
1 files changed, 160 insertions, 2 deletions
diff --git a/indra/llcorehttp/httpcommon.cpp b/indra/llcorehttp/httpcommon.cpp index 99238ea920..c606f2b754 100755 --- a/indra/llcorehttp/httpcommon.cpp +++ b/indra/llcorehttp/httpcommon.cpp @@ -23,12 +23,24 @@ * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ +#if LL_WINDOWS +#define SAFE_SSL 1 +#elif LL_DARWIN +#define SAFE_SSL 1 +#else +#define SAFE_SSL 1 +#endif +#include "linden_common.h" // Modifies curl/curl.h interfaces #include "httpcommon.h" - +#include "llmutex.h" +#include "llthread.h" #include <curl/curl.h> #include <string> #include <sstream> +#if SAFE_SSL +#include <openssl/crypto.h> +#endif namespace LLCore @@ -263,5 +275,151 @@ bool HttpStatus::isRetryable() const *this == inv_cont_range); // Short data read disagrees with content-range } -} // end namespace LLCore +namespace LLHttp +{ +namespace +{ +typedef boost::shared_ptr<LLMutex> LLMutex_ptr; +std::vector<LLMutex_ptr> sSSLMutex; + +CURL *getCurlTemplateHandle() +{ + static CURL *curlpTemplateHandle = NULL; + + if (curlpTemplateHandle == NULL) + { // Late creation of the template curl handle + curlpTemplateHandle = curl_easy_init(); + if (curlpTemplateHandle == NULL) + { + LL_WARNS() << "curl error calling curl_easy_init()" << LL_ENDL; + } + else + { + CURLcode result = curl_easy_setopt(curlpTemplateHandle, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4); + check_curl_code(result, CURLOPT_IPRESOLVE); + result = curl_easy_setopt(curlpTemplateHandle, CURLOPT_NOSIGNAL, 1); + check_curl_code(result, CURLOPT_NOSIGNAL); + result = curl_easy_setopt(curlpTemplateHandle, CURLOPT_NOPROGRESS, 1); + check_curl_code(result, CURLOPT_NOPROGRESS); + result = curl_easy_setopt(curlpTemplateHandle, CURLOPT_ENCODING, ""); + check_curl_code(result, CURLOPT_ENCODING); + result = curl_easy_setopt(curlpTemplateHandle, CURLOPT_AUTOREFERER, 1); + check_curl_code(result, CURLOPT_AUTOREFERER); + result = curl_easy_setopt(curlpTemplateHandle, CURLOPT_FOLLOWLOCATION, 1); + check_curl_code(result, CURLOPT_FOLLOWLOCATION); + result = curl_easy_setopt(curlpTemplateHandle, CURLOPT_SSL_VERIFYPEER, 1); + check_curl_code(result, CURLOPT_SSL_VERIFYPEER); + result = curl_easy_setopt(curlpTemplateHandle, CURLOPT_SSL_VERIFYHOST, 0); + check_curl_code(result, CURLOPT_SSL_VERIFYHOST); + + // The Linksys WRT54G V5 router has an issue with frequent + // DNS lookups from LAN machines. If they happen too often, + // like for every HTTP request, the router gets annoyed after + // about 700 or so requests and starts issuing TCP RSTs to + // new connections. Reuse the DNS lookups for even a few + // seconds and no RSTs. + result = curl_easy_setopt(curlpTemplateHandle, CURLOPT_DNS_CACHE_TIMEOUT, 15); + check_curl_code(result, CURLOPT_DNS_CACHE_TIMEOUT); + } + } + + return curlpTemplateHandle; +} + +LLMutex *getCurlMutex() +{ + static LLMutex* sHandleMutexp = NULL; + + if (!sHandleMutexp) + { + sHandleMutexp = new LLMutex(NULL); + } + + return sHandleMutexp; +} + +void deallocateEasyCurl(CURL *curlp) +{ + LLMutexLock lock(getCurlMutex()); + + curl_easy_cleanup(curlp); +} + + +#if SAFE_SSL +//static +void ssl_locking_callback(int mode, int type, const char *file, int line) +{ + if (mode & CRYPTO_LOCK) + { + sSSLMutex[type]->lock(); + } + else + { + sSSLMutex[type]->unlock(); + } +} + +//static +unsigned long ssl_thread_id(void) +{ + return LLThread::currentID(); +} +#endif + +} + +void initialize() +{ + // Do not change this "unless you are familiar with and mean to control + // internal operations of libcurl" + // - http://curl.haxx.se/libcurl/c/curl_global_init.html + CURLcode code = curl_global_init(CURL_GLOBAL_ALL); + + check_curl_code(code, CURL_GLOBAL_ALL); + +#if SAFE_SSL + S32 mutex_count = CRYPTO_num_locks(); + for (S32 i = 0; i < mutex_count; i++) + { + sSSLMutex.push_back(LLMutex_ptr(new LLMutex(NULL))); + } + CRYPTO_set_id_callback(&ssl_thread_id); + CRYPTO_set_locking_callback(&ssl_locking_callback); +#endif + +} + + +CURL_ptr createEasyHandle() +{ + LLMutexLock lock(getCurlMutex()); + + CURL* handle = curl_easy_duphandle(getCurlTemplateHandle()); + + return CURL_ptr(handle, &deallocateEasyCurl); +} + +std::string getCURLVersion() +{ + return std::string(curl_version()); +} + +void check_curl_code(CURLcode code, int curl_setopt_option) +{ + if (CURLE_OK != code) + { + // Comment from old llcurl code which may no longer apply: + // + // linux appears to throw a curl error once per session for a bad initialization + // at a pretty random time (when enabling cookies). + LL_WARNS() << "libcurl error detected: " << curl_easy_strerror(code) + << ", curl_easy_setopt option: " << curl_setopt_option + << LL_ENDL; + } + +} + +} +} // end namespace LLCore |