diff options
Diffstat (limited to 'src/util/os_installation.c')
| -rw-r--r-- | src/util/os_installation.c | 687 |
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 */ |