* @brief get paths used by the program
* @author Milan
*/
-
-#ifdef __cplusplus
-extern "C"
-{
-#if 0 /* keep Emacsens' auto-indent happy */
-}
-#endif
-#endif
-
#include <sys/stat.h>
#include <stdlib.h>
#include <string.h>
#include <mach-o/dyld.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
FILE *f;
char *lgu;
- GNUNET_snprintf (fn,
- sizeof(fn),
- "/proc/%u/maps",
- getpid ());
- f = fopen (fn, "r");
+ GNUNET_snprintf (fn, sizeof (fn), "/proc/%u/maps", getpid ());
+ f = FOPEN (fn, "r");
if (f == NULL)
return NULL;
- while (NULL != fgets (line, sizeof(line), f))
+ while (NULL != fgets (line, sizeof (line), f))
+ {
+ if ((1 ==
+ sscanf (line, "%*x-%*x %*c%*c%*c%*c %*x %*2u:%*2u %*u%*[ ]%s", dir)) &&
+ (NULL != (lgu = strstr (dir, "libgnunetutil"))))
{
- if ((1 == sscanf (line,
- "%*x-%*x %*c%*c%*c%*c %*x %*2u:%*2u %*u%*[ ]%s",
- dir)) &&
- (NULL != (lgu = strstr (dir, "libgnunetutil"))))
- {
- lgu[0] = '\0';
- fclose (f);
- return GNUNET_strdup (dir);
- }
+ lgu[0] = '\0';
+ FCLOSE (f);
+ return GNUNET_strdup (dir);
}
- fclose (f);
+ }
+ FCLOSE (f);
return NULL;
}
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) || (size >= sizeof(lnk)-1))
- {
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "readlink", fn);
- GNUNET_free (lnk);
- return NULL;
- }
+ 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--;
if ((size < 4) || (lnk[size - 4] != '/'))
- {
- /* not installed in "/bin/" -- binary path probably useless */
- GNUNET_free (lnk);
- return NULL;
- }
+ {
+ /* not installed in "/bin/" -- binary path probably useless */
+ return NULL;
+ }
lnk[size] = '\0';
return GNUNET_strdup (lnk);
}
static char *
get_path_from_module_filename ()
{
- char path[4097];
- char *idx;
+ wchar_t path[4097];
+ char upath[4097];
+ wchar_t *idx;
- GetModuleFileName (NULL, path, sizeof(path)-1);
- idx = path + strlen (path);
- while ((idx > path) && (*idx != '\\') && (*idx != '/'))
+ GetModuleFileNameW (NULL, path, sizeof (path) - 1);
+ idx = path + wcslen (path);
+ while ((idx > path) && (*idx != L'\\') && (*idx != L'/'))
idx--;
- *idx = '\0';
- return GNUNET_strdup (path);
+ *idx = L'\0';
+ upath[0] = '\0';
+ WideCharToMultiByte (CP_UTF8, 0, path, -1, upath, 4097, NULL, NULL);
+
+ return GNUNET_strdup (upath);
}
#endif
path = NULL;
func =
- (MyNSGetExecutablePathProto) dlsym (RTLD_DEFAULT, "_NSGetExecutablePath");
+ (MyNSGetExecutablePathProto) dlsym (RTLD_DEFAULT, "_NSGetExecutablePath");
if (!func)
return NULL;
path = &zero;
path = GNUNET_malloc (len);
ret = func (path, &len);
if (ret != 0)
- {
- GNUNET_free (path);
- return NULL;
- }
+ {
+ GNUNET_free (path);
+ return NULL;
+ }
len = strlen (path);
while ((path[len] != '/') && (len > 0))
len--;
p = NULL;
c = _dyld_image_count ();
for (i = 0; i < c; i++)
+ {
+ if (_dyld_get_image_header (i) == &_mh_dylib_header)
{
- if (_dyld_get_image_header (i) == &_mh_dylib_header)
- {
- path = _dyld_get_image_name (i);
- if (path != NULL && strlen (path) > 0)
- {
- p = strdup (path);
- s = p + strlen (p);
- while ((s > p) && (*s != '/'))
- s--;
- s++;
- *s = '\0';
- }
- break;
- }
+ path = _dyld_get_image_name (i);
+ if (path != NULL && strlen (path) > 0)
+ {
+ p = GNUNET_strdup (path);
+ s = p + strlen (p);
+ while ((s > p) && (*s != '/'))
+ s--;
+ s++;
+ *s = '\0';
+ }
+ break;
}
+ }
return p;
}
#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 ()
+get_path_from_PATH (const char *binary)
{
char *path;
char *pos;
path = GNUNET_strdup (p); /* because we write on it */
buf = GNUNET_malloc (strlen (path) + 20);
pos = path;
-
- while (NULL != (end = strchr (pos, ':')))
- {
- *end = '\0';
- sprintf (buf, "%s/%s", pos, "gnunetd");
- 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, "gnunetd");
- if (GNUNET_DISK_file_test (buf) == GNUNET_YES)
+ 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_DISK_file_test (buf) == GNUNET_YES)
+ {
+ pos = GNUNET_strdup (pos);
+ GNUNET_free (buf);
+ GNUNET_free (path);
+ return pos;
+ }
GNUNET_free (buf);
GNUNET_free (path);
return NULL;
return NULL;
}
-/*
+/**
* @brief get the path to GNUnet bin/ or lib/, prefering the lib/ path
* @author Milan
*
if (ret != NULL)
return ret;
#endif
- ret = get_path_from_PATH ();
+ ret = get_path_from_PATH ("gnunet-arm");
if (ret != NULL)
return ret;
/* other attempts here */
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _
- ("Could not determine installation path for GNUnet. Set `%s' environment variable.\n"),
- "GNUNET_PREFIX");
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _
+ ("Could not determine installation path for %s. Set `%s' environment variable.\n"),
+ "GNUnet", "GNUNET_PREFIX");
return NULL;
}
n = strlen (execpath);
if (n == 0)
- {
- /* should never happen, but better safe than sorry */
- GNUNET_free (execpath);
- return NULL;
- }
+ {
+ /* should never happen, but better safe than sorry */
+ GNUNET_free (execpath);
+ return NULL;
+ }
/* remove filename itself */
while ((n > 1) && (execpath[n - 1] == DIR_SEPARATOR))
execpath[--n] = '\0';
if ((n > 5) &&
((0 == strcasecmp (&execpath[n - 5], "lib32")) ||
(0 == strcasecmp (&execpath[n - 5], "lib64"))))
+ {
+ if (dirkind != GNUNET_OS_IPK_LIBDIR)
{
- if (dirkind != GNUNET_OS_IPK_LIBDIR)
- {
- /* strip '/lib32' or '/lib64' */
- execpath[n - 5] = '\0';
- n -= 5;
- }
- else
- isbasedir = 0;
+ /* strip '/lib32' or '/lib64' */
+ execpath[n - 5] = '\0';
+ n -= 5;
}
+ else
+ isbasedir = 0;
+ }
else if ((n > 3) &&
((0 == strcasecmp (&execpath[n - 3], "bin")) ||
(0 == strcasecmp (&execpath[n - 3], "lib"))))
- {
- /* strip '/bin' or '/lib' */
- execpath[n - 3] = '\0';
- n -= 3;
- }
+ {
+ /* strip '/bin' or '/lib' */
+ execpath[n - 3] = '\0';
+ n -= 3;
+ }
/* 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)
- dirname =
- DIR_SEPARATOR_STR "lib" DIR_SEPARATOR_STR "gnunet"
- DIR_SEPARATOR_STR;
- else
- dirname = DIR_SEPARATOR_STR "gnunet" DIR_SEPARATOR_STR;
- break;
- case GNUNET_OS_IPK_DATADIR:
- dirname =
- DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR "gnunet"
- DIR_SEPARATOR_STR;
- break;
- case GNUNET_OS_IPK_LOCALEDIR:
+ {
+ 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)
dirname =
- DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR "locale"
- DIR_SEPARATOR_STR;
- break;
- default:
- GNUNET_free (execpath);
- return NULL;
- }
+ DIR_SEPARATOR_STR "lib" DIR_SEPARATOR_STR "gnunet" DIR_SEPARATOR_STR;
+ else
+ dirname = DIR_SEPARATOR_STR "gnunet" DIR_SEPARATOR_STR;
+ break;
+ case GNUNET_OS_IPK_DATADIR:
+ dirname =
+ DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR "gnunet" 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;
+ default:
+ GNUNET_free (execpath);
+ return NULL;
+ }
tmp = GNUNET_malloc (strlen (execpath) + strlen (dirname) + 1);
sprintf (tmp, "%s%s", execpath, dirname);
GNUNET_free (execpath);
return tmp;
}
-#if 0 /* keep Emacsens' auto-indent happy */
+
+/**
+ * Check whether an executable exists and possibly
+ * if the suid bit is set on the file.
+ * Attempts to find the file using the current
+ * PATH environment variable as a search path.
+ *
+ * @param binary the name of the file to check
+ * @return GNUNET_YES if the file is SUID,
+ * GNUNET_NO if not SUID (but binary exists)
+ * GNUNET_SYSERR on error (no such binary or not executable)
+ */
+int
+GNUNET_OS_check_helper_binary (const char *binary)
{
+ struct stat statbuf;
+ char *p;
+ char *pf;
+
+#ifdef MINGW
+ SOCKET rawsock;
+ char *binaryexe;
+
+ GNUNET_asprintf (&binaryexe, "%s.exe", binary);
+ p = get_path_from_PATH (binaryexe);
+ if (p != NULL)
+ {
+ GNUNET_asprintf (&pf, "%s/%s", p, binaryexe);
+ GNUNET_free (p);
+ p = pf;
+ }
+ GNUNET_free (binaryexe);
+#else
+ p = get_path_from_PATH (binary);
+ if (p != NULL)
+ {
+ GNUNET_asprintf (&pf, "%s/%s", p, binary);
+ GNUNET_free (p);
+ p = pf;
+ }
#endif
-#ifdef __cplusplus
-}
+ if (p == NULL)
+ {
+ LOG (GNUNET_ERROR_TYPE_INFO, _("Could not find binary `%s' in PATH!\n"),
+ binary);
+ return GNUNET_SYSERR;
+ }
+ if (0 != ACCESS (p, X_OK))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING, _("access (%s, X_OK) failed: %s\n"), p,
+ STRERROR (errno));
+ GNUNET_free (p);
+ return GNUNET_SYSERR;
+ }
+#ifndef MINGW
+ if (0 == getuid ())
+ {
+ /* as we run as root, we don't insist on SUID */
+ GNUNET_free (p);
+ return GNUNET_OK;
+ }
+#endif
+ if (0 != STAT (p, &statbuf))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING, _("stat (%s) failed: %s\n"), p,
+ STRERROR (errno));
+ GNUNET_free (p);
+ return GNUNET_SYSERR;
+ }
+#ifndef MINGW
+ if ((0 != (statbuf.st_mode & S_ISUID)) && (statbuf.st_uid == 0))
+ {
+ GNUNET_free (p);
+ return GNUNET_YES;
+ }
+ /* binary exists, but not SUID */
+ GNUNET_free (p);
+ return GNUNET_NO;
+#else
+ GNUNET_free (p);
+ rawsock = socket (AF_INET, SOCK_RAW, IPPROTO_ICMP);
+ if (INVALID_SOCKET == rawsock)
+ {
+ DWORD err = GetLastError ();
+
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "socket (AF_INET, SOCK_RAW, IPPROTO_ICMP) failed! GLE = %d\n", err);
+ return GNUNET_NO; /* not running as administrator */
+ }
+ closesocket (rawsock);
+ return GNUNET_YES;
#endif
+}
+
+
/* end of os_installation.c */
projects / oweals / gnunet.git / blobdiff