зеркало из https://github.com/microsoft/git.git
409 строки
13 KiB
C
409 строки
13 KiB
C
#include "../git-compat-util.h"
|
|
#include "../git-curl-compat.h"
|
|
#ifndef WIN32
|
|
#include <dlfcn.h>
|
|
#endif
|
|
|
|
/*
|
|
* The ABI version of libcurl is encoded in its shared libraries' file names.
|
|
* This ABI version has not changed since October 2006 and is unlikely to be
|
|
* changed in the future. See https://curl.se/libcurl/abi.html for details.
|
|
*/
|
|
#define LIBCURL_ABI_VERSION "4"
|
|
|
|
typedef void (*func_t)(void);
|
|
|
|
#ifndef WIN32
|
|
#ifdef __APPLE__
|
|
#define LIBCURL_FILE_NAME(base) base "." LIBCURL_ABI_VERSION ".dylib"
|
|
#else
|
|
#define LIBCURL_FILE_NAME(base) base ".so." LIBCURL_ABI_VERSION
|
|
#endif
|
|
|
|
static void *load_library(const char *name)
|
|
{
|
|
return dlopen(name, RTLD_LAZY);
|
|
}
|
|
|
|
static func_t load_function(void *handle, const char *name)
|
|
{
|
|
/*
|
|
* Casting the return value of `dlsym()` to a function pointer is
|
|
* explicitly allowed in recent POSIX standards, but GCC complains
|
|
* about this in pedantic mode nevertheless. For more about this issue,
|
|
* see https://stackoverflow.com/q/31526876/1860823 and
|
|
* http://stackoverflow.com/a/36385690/1905491.
|
|
*/
|
|
func_t f;
|
|
*(void **)&f = dlsym(handle, name);
|
|
return f;
|
|
}
|
|
#else
|
|
#define LIBCURL_FILE_NAME(base) base "-" LIBCURL_ABI_VERSION ".dll"
|
|
|
|
static void *load_library(const char *name)
|
|
{
|
|
size_t name_size = strlen(name) + 1;
|
|
const char *path = getenv("PATH");
|
|
char dll_path[MAX_PATH];
|
|
|
|
while (path && *path) {
|
|
const char *sep = strchrnul(path, ';');
|
|
size_t len = sep - path;
|
|
|
|
if (len && len + name_size < sizeof(dll_path)) {
|
|
memcpy(dll_path, path, len);
|
|
dll_path[len] = '/';
|
|
memcpy(dll_path + len + 1, name, name_size);
|
|
|
|
if (!access(dll_path, R_OK)) {
|
|
wchar_t wpath[MAX_PATH];
|
|
int wlen = MultiByteToWideChar(CP_UTF8, 0, dll_path, -1, wpath, ARRAY_SIZE(wpath));
|
|
void *res = wlen ? (void *)LoadLibraryExW(wpath, NULL, 0) : NULL;
|
|
if (!res) {
|
|
DWORD err = GetLastError();
|
|
char buf[1024];
|
|
|
|
if (!FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM |
|
|
FORMAT_MESSAGE_ARGUMENT_ARRAY |
|
|
FORMAT_MESSAGE_IGNORE_INSERTS,
|
|
NULL, err, LANG_NEUTRAL,
|
|
buf, sizeof(buf) - 1, NULL))
|
|
xsnprintf(buf, sizeof(buf), "last error: %ld", err);
|
|
error("LoadLibraryExW() failed with: %s", buf);
|
|
}
|
|
return res;
|
|
}
|
|
}
|
|
|
|
path = *sep ? sep + 1 : NULL;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static func_t load_function(void *handle, const char *name)
|
|
{
|
|
return (func_t)GetProcAddress((HANDLE)handle, name);
|
|
}
|
|
#endif
|
|
|
|
typedef char *(*curl_easy_escape_type)(CURL *handle, const char *string, int length);
|
|
static curl_easy_escape_type curl_easy_escape_func;
|
|
|
|
typedef void (*curl_free_type)(void *p);
|
|
static curl_free_type curl_free_func;
|
|
|
|
typedef CURLcode (*curl_global_init_type)(long flags);
|
|
static curl_global_init_type curl_global_init_func;
|
|
|
|
typedef CURLsslset (*curl_global_sslset_type)(curl_sslbackend id, const char *name, const curl_ssl_backend ***avail);
|
|
static curl_global_sslset_type curl_global_sslset_func;
|
|
|
|
typedef void (*curl_global_cleanup_type)(void);
|
|
static curl_global_cleanup_type curl_global_cleanup_func;
|
|
|
|
typedef struct curl_slist *(*curl_slist_append_type)(struct curl_slist *list, const char *data);
|
|
static curl_slist_append_type curl_slist_append_func;
|
|
|
|
typedef void (*curl_slist_free_all_type)(struct curl_slist *list);
|
|
static curl_slist_free_all_type curl_slist_free_all_func;
|
|
|
|
typedef const char *(*curl_easy_strerror_type)(CURLcode error);
|
|
static curl_easy_strerror_type curl_easy_strerror_func;
|
|
|
|
typedef CURLM *(*curl_multi_init_type)(void);
|
|
static curl_multi_init_type curl_multi_init_func;
|
|
|
|
typedef CURLMcode (*curl_multi_add_handle_type)(CURLM *multi_handle, CURL *curl_handle);
|
|
static curl_multi_add_handle_type curl_multi_add_handle_func;
|
|
|
|
typedef CURLMcode (*curl_multi_remove_handle_type)(CURLM *multi_handle, CURL *curl_handle);
|
|
static curl_multi_remove_handle_type curl_multi_remove_handle_func;
|
|
|
|
typedef CURLMcode (*curl_multi_fdset_type)(CURLM *multi_handle, fd_set *read_fd_set, fd_set *write_fd_set, fd_set *exc_fd_set, int *max_fd);
|
|
static curl_multi_fdset_type curl_multi_fdset_func;
|
|
|
|
typedef CURLMcode (*curl_multi_perform_type)(CURLM *multi_handle, int *running_handles);
|
|
static curl_multi_perform_type curl_multi_perform_func;
|
|
|
|
typedef CURLMcode (*curl_multi_cleanup_type)(CURLM *multi_handle);
|
|
static curl_multi_cleanup_type curl_multi_cleanup_func;
|
|
|
|
typedef CURLMsg *(*curl_multi_info_read_type)(CURLM *multi_handle, int *msgs_in_queue);
|
|
static curl_multi_info_read_type curl_multi_info_read_func;
|
|
|
|
typedef const char *(*curl_multi_strerror_type)(CURLMcode error);
|
|
static curl_multi_strerror_type curl_multi_strerror_func;
|
|
|
|
typedef CURLMcode (*curl_multi_timeout_type)(CURLM *multi_handle, long *milliseconds);
|
|
static curl_multi_timeout_type curl_multi_timeout_func;
|
|
|
|
typedef CURL *(*curl_easy_init_type)(void);
|
|
static curl_easy_init_type curl_easy_init_func;
|
|
|
|
typedef CURLcode (*curl_easy_perform_type)(CURL *curl);
|
|
static curl_easy_perform_type curl_easy_perform_func;
|
|
|
|
typedef void (*curl_easy_cleanup_type)(CURL *curl);
|
|
static curl_easy_cleanup_type curl_easy_cleanup_func;
|
|
|
|
typedef CURL *(*curl_easy_duphandle_type)(CURL *curl);
|
|
static curl_easy_duphandle_type curl_easy_duphandle_func;
|
|
|
|
typedef CURLcode (*curl_easy_getinfo_long_type)(CURL *curl, CURLINFO info, long *value);
|
|
static curl_easy_getinfo_long_type curl_easy_getinfo_long_func;
|
|
|
|
typedef CURLcode (*curl_easy_getinfo_pointer_type)(CURL *curl, CURLINFO info, void **value);
|
|
static curl_easy_getinfo_pointer_type curl_easy_getinfo_pointer_func;
|
|
|
|
typedef CURLcode (*curl_easy_getinfo_off_t_type)(CURL *curl, CURLINFO info, curl_off_t *value);
|
|
static curl_easy_getinfo_off_t_type curl_easy_getinfo_off_t_func;
|
|
|
|
typedef CURLcode (*curl_easy_setopt_long_type)(CURL *curl, CURLoption opt, long value);
|
|
static curl_easy_setopt_long_type curl_easy_setopt_long_func;
|
|
|
|
typedef CURLcode (*curl_easy_setopt_pointer_type)(CURL *curl, CURLoption opt, void *value);
|
|
static curl_easy_setopt_pointer_type curl_easy_setopt_pointer_func;
|
|
|
|
typedef CURLcode (*curl_easy_setopt_off_t_type)(CURL *curl, CURLoption opt, curl_off_t value);
|
|
static curl_easy_setopt_off_t_type curl_easy_setopt_off_t_func;
|
|
|
|
static char ssl_backend[64];
|
|
|
|
static void lazy_load_curl(void)
|
|
{
|
|
static int initialized;
|
|
void *libcurl = NULL;
|
|
func_t curl_easy_getinfo_func, curl_easy_setopt_func;
|
|
|
|
if (initialized)
|
|
return;
|
|
|
|
initialized = 1;
|
|
if (ssl_backend[0]) {
|
|
char dll_name[64 + 16];
|
|
snprintf(dll_name, sizeof(dll_name) - 1,
|
|
LIBCURL_FILE_NAME("libcurl-%s"), ssl_backend);
|
|
libcurl = load_library(dll_name);
|
|
}
|
|
if (!libcurl)
|
|
libcurl = load_library(LIBCURL_FILE_NAME("libcurl"));
|
|
if (!libcurl)
|
|
die("failed to load library '%s'", LIBCURL_FILE_NAME("libcurl"));
|
|
|
|
curl_easy_escape_func = (curl_easy_escape_type)load_function(libcurl, "curl_easy_escape");
|
|
curl_free_func = (curl_free_type)load_function(libcurl, "curl_free");
|
|
curl_global_init_func = (curl_global_init_type)load_function(libcurl, "curl_global_init");
|
|
curl_global_sslset_func = (curl_global_sslset_type)load_function(libcurl, "curl_global_sslset");
|
|
curl_global_cleanup_func = (curl_global_cleanup_type)load_function(libcurl, "curl_global_cleanup");
|
|
curl_slist_append_func = (curl_slist_append_type)load_function(libcurl, "curl_slist_append");
|
|
curl_slist_free_all_func = (curl_slist_free_all_type)load_function(libcurl, "curl_slist_free_all");
|
|
curl_easy_strerror_func = (curl_easy_strerror_type)load_function(libcurl, "curl_easy_strerror");
|
|
curl_multi_init_func = (curl_multi_init_type)load_function(libcurl, "curl_multi_init");
|
|
curl_multi_add_handle_func = (curl_multi_add_handle_type)load_function(libcurl, "curl_multi_add_handle");
|
|
curl_multi_remove_handle_func = (curl_multi_remove_handle_type)load_function(libcurl, "curl_multi_remove_handle");
|
|
curl_multi_fdset_func = (curl_multi_fdset_type)load_function(libcurl, "curl_multi_fdset");
|
|
curl_multi_perform_func = (curl_multi_perform_type)load_function(libcurl, "curl_multi_perform");
|
|
curl_multi_cleanup_func = (curl_multi_cleanup_type)load_function(libcurl, "curl_multi_cleanup");
|
|
curl_multi_info_read_func = (curl_multi_info_read_type)load_function(libcurl, "curl_multi_info_read");
|
|
curl_multi_strerror_func = (curl_multi_strerror_type)load_function(libcurl, "curl_multi_strerror");
|
|
curl_multi_timeout_func = (curl_multi_timeout_type)load_function(libcurl, "curl_multi_timeout");
|
|
curl_easy_init_func = (curl_easy_init_type)load_function(libcurl, "curl_easy_init");
|
|
curl_easy_perform_func = (curl_easy_perform_type)load_function(libcurl, "curl_easy_perform");
|
|
curl_easy_cleanup_func = (curl_easy_cleanup_type)load_function(libcurl, "curl_easy_cleanup");
|
|
curl_easy_duphandle_func = (curl_easy_duphandle_type)load_function(libcurl, "curl_easy_duphandle");
|
|
|
|
curl_easy_getinfo_func = load_function(libcurl, "curl_easy_getinfo");
|
|
curl_easy_getinfo_long_func = (curl_easy_getinfo_long_type)curl_easy_getinfo_func;
|
|
curl_easy_getinfo_pointer_func = (curl_easy_getinfo_pointer_type)curl_easy_getinfo_func;
|
|
curl_easy_getinfo_off_t_func = (curl_easy_getinfo_off_t_type)curl_easy_getinfo_func;
|
|
|
|
curl_easy_setopt_func = load_function(libcurl, "curl_easy_setopt");
|
|
curl_easy_setopt_long_func = (curl_easy_setopt_long_type)curl_easy_setopt_func;
|
|
curl_easy_setopt_pointer_func = (curl_easy_setopt_pointer_type)curl_easy_setopt_func;
|
|
curl_easy_setopt_off_t_func = (curl_easy_setopt_off_t_type)curl_easy_setopt_func;
|
|
}
|
|
|
|
char *curl_easy_escape(CURL *handle, const char *string, int length)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_easy_escape_func(handle, string, length);
|
|
}
|
|
|
|
void curl_free(void *p)
|
|
{
|
|
lazy_load_curl();
|
|
curl_free_func(p);
|
|
}
|
|
|
|
CURLcode curl_global_init(long flags)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_global_init_func(flags);
|
|
}
|
|
|
|
CURLsslset curl_global_sslset(curl_sslbackend id, const char *name, const curl_ssl_backend ***avail)
|
|
{
|
|
if (name && strlen(name) < sizeof(ssl_backend))
|
|
strlcpy(ssl_backend, name, sizeof(ssl_backend));
|
|
|
|
lazy_load_curl();
|
|
return curl_global_sslset_func(id, name, avail);
|
|
}
|
|
|
|
void curl_global_cleanup(void)
|
|
{
|
|
lazy_load_curl();
|
|
curl_global_cleanup_func();
|
|
}
|
|
|
|
struct curl_slist *curl_slist_append(struct curl_slist *list, const char *data)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_slist_append_func(list, data);
|
|
}
|
|
|
|
void curl_slist_free_all(struct curl_slist *list)
|
|
{
|
|
lazy_load_curl();
|
|
curl_slist_free_all_func(list);
|
|
}
|
|
|
|
const char *curl_easy_strerror(CURLcode error)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_easy_strerror_func(error);
|
|
}
|
|
|
|
CURLM *curl_multi_init(void)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_multi_init_func();
|
|
}
|
|
|
|
CURLMcode curl_multi_add_handle(CURLM *multi_handle, CURL *curl_handle)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_multi_add_handle_func(multi_handle, curl_handle);
|
|
}
|
|
|
|
CURLMcode curl_multi_remove_handle(CURLM *multi_handle, CURL *curl_handle)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_multi_remove_handle_func(multi_handle, curl_handle);
|
|
}
|
|
|
|
CURLMcode curl_multi_fdset(CURLM *multi_handle, fd_set *read_fd_set, fd_set *write_fd_set, fd_set *exc_fd_set, int *max_fd)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_multi_fdset_func(multi_handle, read_fd_set, write_fd_set, exc_fd_set, max_fd);
|
|
}
|
|
|
|
CURLMcode curl_multi_perform(CURLM *multi_handle, int *running_handles)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_multi_perform_func(multi_handle, running_handles);
|
|
}
|
|
|
|
CURLMcode curl_multi_cleanup(CURLM *multi_handle)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_multi_cleanup_func(multi_handle);
|
|
}
|
|
|
|
CURLMsg *curl_multi_info_read(CURLM *multi_handle, int *msgs_in_queue)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_multi_info_read_func(multi_handle, msgs_in_queue);
|
|
}
|
|
|
|
const char *curl_multi_strerror(CURLMcode error)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_multi_strerror_func(error);
|
|
}
|
|
|
|
CURLMcode curl_multi_timeout(CURLM *multi_handle, long *milliseconds)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_multi_timeout_func(multi_handle, milliseconds);
|
|
}
|
|
|
|
CURL *curl_easy_init(void)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_easy_init_func();
|
|
}
|
|
|
|
CURLcode curl_easy_perform(CURL *curl)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_easy_perform_func(curl);
|
|
}
|
|
|
|
void curl_easy_cleanup(CURL *curl)
|
|
{
|
|
lazy_load_curl();
|
|
curl_easy_cleanup_func(curl);
|
|
}
|
|
|
|
CURL *curl_easy_duphandle(CURL *curl)
|
|
{
|
|
lazy_load_curl();
|
|
return curl_easy_duphandle_func(curl);
|
|
}
|
|
|
|
#ifndef CURL_IGNORE_DEPRECATION
|
|
#define CURL_IGNORE_DEPRECATION(x) x
|
|
#endif
|
|
|
|
#ifndef CURLOPTTYPE_BLOB
|
|
#define CURLOPTTYPE_BLOB 40000
|
|
#endif
|
|
|
|
#undef curl_easy_getinfo
|
|
CURLcode curl_easy_getinfo(CURL *curl, CURLINFO info, ...)
|
|
{
|
|
va_list ap;
|
|
CURLcode res;
|
|
|
|
va_start(ap, info);
|
|
lazy_load_curl();
|
|
CURL_IGNORE_DEPRECATION(
|
|
if (info >= CURLINFO_LONG && info < CURLINFO_DOUBLE)
|
|
res = curl_easy_getinfo_long_func(curl, info, va_arg(ap, long *));
|
|
else if ((info >= CURLINFO_STRING && info < CURLINFO_LONG) ||
|
|
(info >= CURLINFO_SLIST && info < CURLINFO_SOCKET))
|
|
res = curl_easy_getinfo_pointer_func(curl, info, va_arg(ap, void **));
|
|
else if (info >= CURLINFO_OFF_T)
|
|
res = curl_easy_getinfo_off_t_func(curl, info, va_arg(ap, curl_off_t *));
|
|
else
|
|
die("%s:%d: TODO (info: %d)!", __FILE__, __LINE__, info);
|
|
)
|
|
va_end(ap);
|
|
return res;
|
|
}
|
|
|
|
#undef curl_easy_setopt
|
|
CURLcode curl_easy_setopt(CURL *curl, CURLoption opt, ...)
|
|
{
|
|
va_list ap;
|
|
CURLcode res;
|
|
|
|
va_start(ap, opt);
|
|
lazy_load_curl();
|
|
CURL_IGNORE_DEPRECATION(
|
|
if (opt >= CURLOPTTYPE_LONG && opt < CURLOPTTYPE_OBJECTPOINT)
|
|
res = curl_easy_setopt_long_func(curl, opt, va_arg(ap, long));
|
|
else if (opt >= CURLOPTTYPE_OBJECTPOINT && opt < CURLOPTTYPE_OFF_T)
|
|
res = curl_easy_setopt_pointer_func(curl, opt, va_arg(ap, void *));
|
|
else if (opt >= CURLOPTTYPE_OFF_T && opt < CURLOPTTYPE_BLOB)
|
|
res = curl_easy_setopt_off_t_func(curl, opt, va_arg(ap, curl_off_t));
|
|
else
|
|
die("%s:%d: TODO (opt: %d)!", __FILE__, __LINE__, opt);
|
|
)
|
|
va_end(ap);
|
|
return res;
|
|
}
|