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-rw-r--r--src/util/os_installation.c687
1 files changed, 25 insertions, 662 deletions
diff --git a/src/util/os_installation.c b/src/util/os_installation.c
index 0eab118fe..5aa34f1b9 100644
--- a/src/util/os_installation.c
+++ b/src/util/os_installation.c
@@ -1,701 +1,64 @@
/*
- This file is part of GNUnet.
- Copyright (C) 2006-2014 GNUnet e.V.
+ This file is part of GNU Taler.
+ Copyright (C) 2016 Inria
- GNUnet is free software; you can redistribute it and/or modify
+ Taler is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
- GNUnet is distributed in the hope that it will be useful, but
+ Taler is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
+ along with Taler; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* @file os_installation.c
- * @brief get paths used by the program; based heavily on the
- * corresponding GNUnet file, just adapted for Taler.
- * @author Milan
+ * @brief initialize libgnunet OS subsystem for Taler.
+ * @author Christian Grothoff
*/
#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
-#if DARWIN
-#include <mach-o/ldsyms.h>
-#include <mach-o/dyld.h>
-#elif WINDOWS
-#include <windows.h>
-#endif
-#define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
-
-#define LOG_STRERROR_FILE(kind,syscall,filename) GNUNET_log_from_strerror_file (kind, "util", syscall, filename)
-
-
-#if LINUX
/**
- * Try to determine path by reading /proc/PID/exe
- *
- * @return NULL on error
+ * Default project data used for installation path detection
+ * for GNU Taler.
*/
-static char *
-get_path_from_proc_maps ()
-{
- char fn[64];
- char line[1024];
- char dir[1024];
- FILE *f;
- char *lgu;
-
- GNUNET_snprintf (fn, sizeof (fn), "/proc/%u/maps", getpid ());
- if (NULL == (f = FOPEN (fn, "r")))
- return NULL;
- while (NULL != fgets (line, sizeof (line), f))
- {
- if ((1 ==
- SSCANF (line, "%*x-%*x %*c%*c%*c%*c %*x %*2x:%*2x %*u%*[ ]%1023s", dir)) &&
- (NULL != (lgu = strstr (dir, "libtalerutil"))))
- {
- lgu[0] = '\0';
- FCLOSE (f);
- return GNUNET_strdup (dir);
- }
- }
- FCLOSE (f);
- return NULL;
-}
+static const struct GNUNET_OS_ProjectData taler_pd = {
+ .libname = "libtalerutil",
+ .project_dirname = "taler",
+ .binary_name = "taler-exchange-httpd",
+ .env_varname = "TALER_PREFIX",
+ .bug_email = "taler@gnu.org",
+ .homepage = "http://www.gnu.org/s/taler/",
+};
/**
- * Try to determine path by reading /proc/PID/exe
- *
- * @return NULL on error
+ * Return default project data used by Taler.
*/
-static char *
-get_path_from_proc_exe ()
+const struct GNUNET_OS_ProjectData *
+TALER_project_data_default (void)
{
- char fn[64];
- char lnk[1024];
- ssize_t size;
-
- GNUNET_snprintf (fn, sizeof (fn), "/proc/%u/exe", getpid ());
- size = readlink (fn, lnk, sizeof (lnk) - 1);
- if (size <= 0)
- {
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "readlink", fn);
- return NULL;
- }
- GNUNET_assert (size < sizeof (lnk));
- lnk[size] = '\0';
- while ((lnk[size] != '/') && (size > 0))
- size--;
- /* test for being in lib/taler/libexec/ or lib/MULTIARCH/taler/libexec */
- if ( (size > strlen ("/taler/libexec/")) &&
- (0 == strcmp ("/taler/libexec/",
- &lnk[size - strlen ("/taler/libexec/")])) )
- size -= strlen ("taler/libexec/");
- if ((size < 4) || (lnk[size - 4] != '/'))
- {
- /* not installed in "/bin/" -- binary path probably useless */
- return NULL;
- }
- lnk[size] = '\0';
- return GNUNET_strdup (lnk);
+ return &taler_pd;
}
-#endif
-
-
-#if WINDOWS
-static HINSTANCE dll_instance;
/**
- * GNUNET_util_cl_init() in common_logging.c is preferred.
- * This function is only for thread-local storage (not used in GNUnet)
- * and hInstance saving.
+ * Initialize libtalerutil.
*/
-BOOL WINAPI
-DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
+void __attribute__ ((constructor))
+TALER_OS_init ()
{
- switch (fdwReason)
- {
- case DLL_PROCESS_ATTACH:
- dll_instance = hinstDLL;
- break;
- case DLL_THREAD_ATTACH:
- break;
- case DLL_THREAD_DETACH:
- break;
- case DLL_PROCESS_DETACH:
- break;
- }
- return TRUE;
+ GNUNET_OS_init (&taler_pd);
}
-/**
- * Try to determine path with win32-specific function
- *
- * @return NULL on error
- */
-static char *
-get_path_from_module_filename ()
-{
- size_t pathlen = 512;
- DWORD real_pathlen;
- wchar_t *idx;
- wchar_t *modulepath = NULL;
- char *upath;
- uint8_t *u8_string;
- size_t u8_string_length;
-
- /* This braindead function won't tell us how much space it needs, so
- * we start at 1024 and double the space up if it doesn't fit, until
- * it fits, or we exceed the threshold.
- */
- do
- {
- pathlen = pathlen * 2;
- modulepath = GNUNET_realloc (modulepath, pathlen * sizeof (wchar_t));
- SetLastError (0);
- real_pathlen = GetModuleFileNameW (dll_instance, modulepath, pathlen * sizeof (wchar_t));
- } while (real_pathlen >= pathlen && pathlen < 16*1024);
- if (real_pathlen >= pathlen)
- GNUNET_assert (0);
- /* To be safe */
- modulepath[real_pathlen] = '\0';
-
- idx = modulepath + real_pathlen;
- while ((idx > modulepath) && (*idx != L'\\') && (*idx != L'/'))
- idx--;
- *idx = L'\0';
-
- /* Now modulepath holds full path to the directory where libtalerutil is.
- * This directory should look like <TALER_PREFIX>/bin or <TALER_PREFIX>.
- */
- if (wcschr (modulepath, L'/') || wcschr (modulepath, L'\\'))
- {
- /* At least one directory component (i.e. we're not in a root directory) */
- wchar_t *dirname = idx;
- while ((dirname > modulepath) && (*dirname != L'\\') && (*dirname != L'/'))
- dirname--;
- *dirname = L'\0';
- if (dirname > modulepath)
- {
- dirname++;
- /* Now modulepath holds full path to the parent directory of the directory
- * where libtalerutil is.
- * dirname holds the name of the directory where libtalerutil is.
- */
- if (wcsicmp (dirname, L"bin") == 0)
- {
- /* pass */
- }
- else
- {
- /* Roll back our changes to modulepath */
- dirname--;
- *dirname = L'/';
- }
- }
- }
-
- /* modulepath is TALER_PREFIX */
- u8_string = u16_to_u8 (modulepath, wcslen (modulepath), NULL, &u8_string_length);
- if (NULL == u8_string)
- GNUNET_assert (0);
-
- upath = GNUNET_malloc (u8_string_length + 1);
- memcpy (upath, u8_string, u8_string_length);
- upath[u8_string_length] = '\0';
-
- free (u8_string);
- GNUNET_free (modulepath);
-
- return upath;
-}
-#endif
-
-
-#if DARWIN
-/**
- * Signature of the '_NSGetExecutablePath" function.
- *
- * @param buf where to write the path
- * @param number of bytes available in 'buf'
- * @return 0 on success, otherwise desired number of bytes is stored in 'bufsize'
- */
-typedef int (*MyNSGetExecutablePathProto) (char *buf, size_t * bufsize);
-
-
-/**
- * Try to obtain the path of our executable using '_NSGetExecutablePath'.
- *
- * @return NULL on error
- */
-static char *
-get_path_from_NSGetExecutablePath ()
-{
- static char zero = '\0';
- char *path;
- size_t len;
- MyNSGetExecutablePathProto func;
-
- path = NULL;
- if (NULL == (func =
- (MyNSGetExecutablePathProto) dlsym (RTLD_DEFAULT, "_NSGetExecutablePath")))
- return NULL;
- path = &zero;
- len = 0;
- /* get the path len, including the trailing \0 */
- (void) func (path, &len);
- if (0 == len)
- return NULL;
- path = GNUNET_malloc (len);
- if (0 != func (path, &len))
- {
- GNUNET_free (path);
- return NULL;
- }
- len = strlen (path);
- while ((path[len] != '/') && (len > 0))
- len--;
- path[len] = '\0';
- return path;
-}
-
-
-/**
- * Try to obtain the path of our executable using '_dyld_image' API.
- *
- * @return NULL on error
- */
-static char *
-get_path_from_dyld_image ()
-{
- const char *path;
- char *p;
- char *s;
- unsigned int i;
- int c;
-
- c = _dyld_image_count ();
- for (i = 0; i < c; i++)
- {
- if (((const void *) _dyld_get_image_header (i)) != (const void *)&_mh_dylib_header)
- continue;
- path = _dyld_get_image_name (i);
- if ( (NULL == path) || (0 == strlen (path)) )
- continue;
- p = GNUNET_strdup (path);
- s = p + strlen (p);
- while ((s > p) && ('/' != *s))
- s--;
- s++;
- *s = '\0';
- return p;
- }
- return NULL;
-}
-#endif
-
-
-/**
- * Return the actual path to a file found in the current
- * PATH environment variable.
- *
- * @param binary the name of the file to find
- * @return path to binary, NULL if not found
- */
-static char *
-get_path_from_PATH (const char *binary)
-{
- char *path;
- char *pos;
- char *end;
- char *buf;
- const char *p;
-
- if (NULL == (p = getenv ("PATH")))
- return NULL;
-#if WINDOWS
- /* On W32 look in CWD first. */
- GNUNET_asprintf (&path, ".%c%s", PATH_SEPARATOR, p);
-#else
- path = GNUNET_strdup (p); /* because we write on it */
-#endif
- buf = GNUNET_malloc (strlen (path) + strlen (binary) + 1 + 1);
- pos = path;
- while (NULL != (end = strchr (pos, PATH_SEPARATOR)))
- {
- *end = '\0';
- sprintf (buf, "%s/%s", pos, binary);
- if (GNUNET_DISK_file_test (buf) == GNUNET_YES)
- {
- pos = GNUNET_strdup (pos);
- GNUNET_free (buf);
- GNUNET_free (path);
- return pos;
- }
- pos = end + 1;
- }
- sprintf (buf, "%s/%s", pos, binary);
- if (GNUNET_YES == GNUNET_DISK_file_test (buf))
- {
- pos = GNUNET_strdup (pos);
- GNUNET_free (buf);
- GNUNET_free (path);
- return pos;
- }
- GNUNET_free (buf);
- GNUNET_free (path);
- return NULL;
-}
-
-
-/**
- * Try to obtain the installation path using the "TALER_PREFIX" environment
- * variable.
- *
- * @return NULL on error (environment variable not set)
- */
-static char *
-get_path_from_TALER_PREFIX ()
-{
- const char *p;
-
- if (NULL != (p = getenv ("TALER_PREFIX")))
- return GNUNET_strdup (p);
- return NULL;
-}
-
-
-/**
- * @brief get the path to Taler bin/ or lib/, prefering the lib/ path
- * @author Milan
- *
- * @return a pointer to the executable path, or NULL on error
- */
-static char *
-os_get_taler_path ()
-{
- char *ret;
-
- if (NULL != (ret = get_path_from_TALER_PREFIX ()))
- return ret;
-#if LINUX
- if (NULL != (ret = get_path_from_proc_maps ()))
- return ret;
- /* try path *first*, before /proc/exe, as /proc/exe can be wrong */
- if (NULL != (ret = get_path_from_PATH ("taler-mint-httpd")))
- return ret;
- if (NULL != (ret = get_path_from_proc_exe ()))
- return ret;
-#endif
-#if WINDOWS
- if (NULL != (ret = get_path_from_module_filename ()))
- return ret;
-#endif
-#if DARWIN
- if (NULL != (ret = get_path_from_dyld_image ()))
- return ret;
- if (NULL != (ret = get_path_from_NSGetExecutablePath ()))
- return ret;
-#endif
- if (NULL != (ret = get_path_from_PATH ("taler-mint-httpd")))
- return ret;
- /* other attempts here */
- LOG (GNUNET_ERROR_TYPE_ERROR,
- _("Could not determine installation path for %s. Set `%s' environment variable.\n"),
- "Taler", "TALER_PREFIX");
- return NULL;
-}
-
-
-/**
- * @brief get the path to current app's bin/
- * @author Milan
- *
- * @return a pointer to the executable path, or NULL on error
- */
-static char *
-os_get_exec_path ()
-{
- char *ret = NULL;
-
-#if LINUX
- if (NULL != (ret = get_path_from_proc_exe ()))
- return ret;
-#endif
-#if WINDOWS
- if (NULL != (ret = get_path_from_module_filename ()))
- return ret;
-#endif
-#if DARWIN
- if (NULL != (ret = get_path_from_NSGetExecutablePath ()))
- return ret;
-#endif
- /* other attempts here */
- return ret;
-}
-
-
-/**
- * @brief get the path to a specific Taler installation directory or,
- * with #GNUNET_OS_IPK_SELF_PREFIX, the current running apps installation directory
- * @author Milan
- * @return a pointer to the dir path (to be freed by the caller)
- */
-char *
-TALER_OS_installation_get_path (enum GNUNET_OS_InstallationPathKind dirkind)
-{
- size_t n;
- const char *dirname;
- char *execpath = NULL;
- char *tmp;
- char *multiarch;
- char *libdir;
- int isbasedir;
-
- /* if wanted, try to get the current app's bin/ */
- if (dirkind == GNUNET_OS_IPK_SELF_PREFIX)
- execpath = os_get_exec_path ();
-
- /* try to get Taler's bin/ or lib/, or if previous was unsuccessful some
- * guess for the current app */
- if (NULL == execpath)
- execpath = os_get_taler_path ();
-
- if (NULL == execpath)
- return NULL;
-
- n = strlen (execpath);
- if (0 == n)
- {
- /* should never happen, but better safe than sorry */
- GNUNET_free (execpath);
- return NULL;
- }
- /* remove filename itself */
- while ((n > 1) && (DIR_SEPARATOR == execpath[n - 1]))
- execpath[--n] = '\0';
-
- isbasedir = 1;
- if ((n > 6) &&
- ((0 == strcasecmp (&execpath[n - 6], "/lib32")) ||
- (0 == strcasecmp (&execpath[n - 6], "/lib64"))))
- {
- if ( (GNUNET_OS_IPK_LIBDIR != dirkind) &&
- (GNUNET_OS_IPK_LIBEXECDIR != dirkind) )
- {
- /* strip '/lib32' or '/lib64' */
- execpath[n - 6] = '\0';
- n -= 6;
- }
- else
- isbasedir = 0;
- }
- else if ((n > 4) &&
- ((0 == strcasecmp (&execpath[n - 4], "/bin")) ||
- (0 == strcasecmp (&execpath[n - 4], "/lib"))))
- {
- /* strip '/bin' or '/lib' */
- execpath[n - 4] = '\0';
- n -= 4;
- }
- multiarch = NULL;
- if (NULL != (libdir = strstr (execpath, "/lib/")))
- {
- /* test for multi-arch path of the form "PREFIX/lib/MULTIARCH/";
- here we need to re-add 'multiarch' to lib and libexec paths later! */
- multiarch = &libdir[5];
- if (NULL == strchr (multiarch, '/'))
- libdir[0] = '\0'; /* Debian multiarch format, cut of from 'execpath' but preserve in multicarch */
- else
- multiarch = NULL; /* maybe not, multiarch still has a '/', which is not OK */
- }
- /* in case this was a directory named foo-bin, remove "foo-" */
- while ((n > 1) && (execpath[n - 1] == DIR_SEPARATOR))
- execpath[--n] = '\0';
- switch (dirkind)
- {
- case GNUNET_OS_IPK_PREFIX:
- case GNUNET_OS_IPK_SELF_PREFIX:
- dirname = DIR_SEPARATOR_STR;
- break;
- case GNUNET_OS_IPK_BINDIR:
- dirname = DIR_SEPARATOR_STR "bin" DIR_SEPARATOR_STR;
- break;
- case GNUNET_OS_IPK_LIBDIR:
- if (isbasedir)
- {
- GNUNET_asprintf (&tmp,
- "%s%s%s%s%s",
- execpath,
- DIR_SEPARATOR_STR "lib",
- (NULL != multiarch) ? DIR_SEPARATOR_STR : "",
- (NULL != multiarch) ? multiarch : "",
- DIR_SEPARATOR_STR "taler" DIR_SEPARATOR_STR);
- if (GNUNET_YES ==
- GNUNET_DISK_directory_test (tmp, GNUNET_YES))
- {
- GNUNET_free (execpath);
- return tmp;
- }
- GNUNET_free (tmp);
- tmp = NULL;
- if (4 == sizeof (void *))
- {
- dirname =
- DIR_SEPARATOR_STR "lib32" DIR_SEPARATOR_STR "taler" DIR_SEPARATOR_STR;
- GNUNET_asprintf (&tmp,
- "%s%s",
- execpath,
- dirname);
- }
- if (8 == sizeof (void *))
- {
- dirname =
- DIR_SEPARATOR_STR "lib64" DIR_SEPARATOR_STR "taler" DIR_SEPARATOR_STR;
- GNUNET_asprintf (&tmp,
- "%s%s",
- execpath,
- dirname);
- }
-
- if ( (NULL != tmp) &&
- (GNUNET_YES ==
- GNUNET_DISK_directory_test (tmp, GNUNET_YES)) )
- {
- GNUNET_free (execpath);
- return tmp;
- }
- GNUNET_free (tmp);
- }
- dirname = DIR_SEPARATOR_STR "taler" DIR_SEPARATOR_STR;
- break;
- case GNUNET_OS_IPK_DATADIR:
- dirname =
- DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR "taler" DIR_SEPARATOR_STR;
- break;
- case GNUNET_OS_IPK_LOCALEDIR:
- dirname =
- DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR "locale" DIR_SEPARATOR_STR;
- break;
- case GNUNET_OS_IPK_ICONDIR:
- dirname =
- DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR "icons" DIR_SEPARATOR_STR;
- break;
- case GNUNET_OS_IPK_DOCDIR:
- dirname =
- DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR "doc" DIR_SEPARATOR_STR \
- "gnunet" DIR_SEPARATOR_STR;
- break;
- case GNUNET_OS_IPK_LIBEXECDIR:
- if (isbasedir)
- {
- dirname =
- DIR_SEPARATOR_STR "taler" DIR_SEPARATOR_STR "libexec" DIR_SEPARATOR_STR;
- GNUNET_asprintf (&tmp,
- "%s%s%s%s",
- execpath,
- DIR_SEPARATOR_STR "lib" DIR_SEPARATOR_STR,
- (NULL != multiarch) ? multiarch : "",
- dirname);
- if (GNUNET_YES ==
- GNUNET_DISK_directory_test (tmp, GNUNET_YES))
- {
- GNUNET_free (execpath);
- return tmp;
- }
- GNUNET_free (tmp);
- tmp = NULL;
- if (4 == sizeof (void *))
- {
- dirname =
- DIR_SEPARATOR_STR "lib32" DIR_SEPARATOR_STR "taler" DIR_SEPARATOR_STR \
- "libexec" DIR_SEPARATOR_STR;
- GNUNET_asprintf (&tmp,
- "%s%s",
- execpath,
- dirname);
- }
- if (8 == sizeof (void *))
- {
- dirname =
- DIR_SEPARATOR_STR "lib64" DIR_SEPARATOR_STR "taler" DIR_SEPARATOR_STR \
- "libexec" DIR_SEPARATOR_STR;
- GNUNET_asprintf (&tmp,
- "%s%s",
- execpath,
- dirname);
- }
- if ( (NULL != tmp) &&
- (GNUNET_YES ==
- GNUNET_DISK_directory_test (tmp, GNUNET_YES)) )
- {
- GNUNET_free (execpath);
- return tmp;
- }
-
- GNUNET_free (tmp);
- }
- dirname =
- DIR_SEPARATOR_STR "taler" DIR_SEPARATOR_STR \
- "libexec" DIR_SEPARATOR_STR;
- break;
- default:
- GNUNET_free (execpath);
- return NULL;
- }
- GNUNET_asprintf (&tmp,
- "%s%s",
- execpath,
- dirname);
- GNUNET_free (execpath);
- return tmp;
-}
-
-
-/**
- * Given the name of a taler-helper, taler-service or taler-daemon
- * binary, try to prefix it with the libexec/-directory to get the
- * full path.
- *
- * @param progname name of the binary
- * @return full path to the binary, if possible, otherwise copy of 'progname'
- */
-char *
-TALER_OS_get_libexec_binary_path (const char *progname)
-{
- static char *cache;
- char *libexecdir;
- char *binary;
-
- if ( (DIR_SEPARATOR == progname[0]) ||
- (GNUNET_YES == GNUNET_STRINGS_path_is_absolute (progname, GNUNET_NO, NULL, NULL)) )
- return GNUNET_strdup (progname);
- if (NULL != cache)
- libexecdir = cache;
- else
- libexecdir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_LIBEXECDIR);
- if (NULL == libexecdir)
- return GNUNET_strdup (progname);
- GNUNET_asprintf (&binary,
- "%s%s",
- libexecdir,
- progname);
- cache = libexecdir;
- return binary;
-}
-
-
-
/* end of os_installation.c */