GNUnet  0.11.x
Data Structures | Macros | Typedefs | Enumerations | Functions
OS library

Low level process routines. More...

Data Structures

struct  GNUNET_OS_ProjectData
 Project-specific data used to help the OS subsystem find installation paths. More...
 

Macros

#define GNUNET_OS_get_hostname_max_length()   255
 Get maximum string length returned by gethostname() More...
 

Typedefs

typedef int(* GNUNET_OS_NetworkInterfaceProcessor) (void *cls, const char *name, int isDefault, const struct sockaddr *addr, const struct sockaddr *broadcast_addr, const struct sockaddr *netmask, socklen_t addrlen)
 Callback function invoked for each interface found. More...
 
typedef void(* GNUNET_OS_LineProcessor) (void *cls, const char *line)
 Type of a function to process a line of output. More...
 

Enumerations

enum  GNUNET_OS_InheritStdioFlags {
  GNUNET_OS_INHERIT_STD_NONE = 0, GNUNET_OS_INHERIT_STD_IN = 1, GNUNET_OS_INHERIT_STD_OUT = 2, GNUNET_OS_INHERIT_STD_ERR = 4,
  GNUNET_OS_INHERIT_STD_OUT_AND_ERR = 6, GNUNET_OS_INHERIT_STD_ALL = 7, GNUNET_OS_USE_PIPE_CONTROL = 8
}
 Flags that determine which of the standard streams should be inherited by the child process. More...
 
enum  GNUNET_OS_InstallationPathKind {
  GNUNET_OS_IPK_PREFIX, GNUNET_OS_IPK_BINDIR, GNUNET_OS_IPK_LIBDIR, GNUNET_OS_IPK_DATADIR,
  GNUNET_OS_IPK_LOCALEDIR, GNUNET_OS_IPK_SELF_PREFIX, GNUNET_OS_IPK_ICONDIR, GNUNET_OS_IPK_DOCDIR,
  GNUNET_OS_IPK_LIBEXECDIR
}
 Possible installation paths to request. More...
 
enum  GNUNET_OS_ProcessStatusType {
  GNUNET_OS_PROCESS_UNKNOWN, GNUNET_OS_PROCESS_RUNNING, GNUNET_OS_PROCESS_STOPPED, GNUNET_OS_PROCESS_EXITED,
  GNUNET_OS_PROCESS_SIGNALED
}
 Process status types. More...
 

Functions

const struct GNUNET_OS_ProjectDataGNUNET_OS_project_data_default (void)
 Return default project data used by 'libgnunetutil' for GNUnet. More...
 
const struct GNUNET_OS_ProjectDataGNUNET_OS_project_data_get (void)
 
void GNUNET_OS_init (const struct GNUNET_OS_ProjectData *pd)
 Setup OS subsystem with project data. More...
 
char * GNUNET_OS_installation_get_path (enum GNUNET_OS_InstallationPathKind dirkind)
 Get the path to a specific GNUnet installation directory or, with GNUNET_OS_IPK_SELF_PREFIX, the current running apps installation directory. More...
 
char * GNUNET_OS_get_libexec_binary_path (const char *progname)
 Given the name of a gnunet-helper, gnunet-service or gnunet-daemon binary, try to prefix it with the libexec/-directory to get the full path. More...
 
char * GNUNET_OS_get_suid_binary_path (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *progname)
 Given the name of a helper, service or daemon binary construct the full path to the binary using the SUID_BINARY_PATH in the PATHS section of the configuration. More...
 
void GNUNET_OS_network_interfaces_list (GNUNET_OS_NetworkInterfaceProcessor proc, void *proc_cls)
 Enumerate all network interfaces. More...
 
struct GNUNET_OS_ProcessGNUNET_OS_process_current (void)
 Get process structure for current process. More...
 
int GNUNET_OS_process_kill (struct GNUNET_OS_Process *proc, int sig)
 Sends a signal to the process. More...
 
void GNUNET_OS_process_destroy (struct GNUNET_OS_Process *proc)
 Cleans up process structure contents (OS-dependent) and deallocates it. More...
 
pid_t GNUNET_OS_process_get_pid (struct GNUNET_OS_Process *proc)
 Get the pid of the process in question. More...
 
struct GNUNET_OS_ProcessGNUNET_OS_start_process_vap (enum GNUNET_OS_InheritStdioFlags std_inheritance, struct GNUNET_DISK_PipeHandle *pipe_stdin, struct GNUNET_DISK_PipeHandle *pipe_stdout, struct GNUNET_DISK_PipeHandle *pipe_stderr, const char *filename, char *const argv[])
 Start a process. More...
 
struct GNUNET_OS_ProcessGNUNET_OS_start_process (enum GNUNET_OS_InheritStdioFlags std_inheritance, struct GNUNET_DISK_PipeHandle *pipe_stdin, struct GNUNET_DISK_PipeHandle *pipe_stdout, struct GNUNET_DISK_PipeHandle *pipe_stderr, const char *filename,...)
 Start a process. More...
 
struct GNUNET_OS_ProcessGNUNET_OS_start_process_va (enum GNUNET_OS_InheritStdioFlags std_inheritance, struct GNUNET_DISK_PipeHandle *pipe_stdin, struct GNUNET_DISK_PipeHandle *pipe_stdout, struct GNUNET_DISK_PipeHandle *pipe_stderr, const char *filename, va_list va)
 Start a process. More...
 
struct GNUNET_OS_ProcessGNUNET_OS_start_process_v (enum GNUNET_OS_InheritStdioFlags std_inheritance, const int *lsocks, const char *filename, char *const argv[])
 Start a process. More...
 
struct GNUNET_OS_ProcessGNUNET_OS_start_process_s (enum GNUNET_OS_InheritStdioFlags std_inheritance, const int *lsocks, const char *filename,...)
 Start a process. More...
 
void GNUNET_OS_command_stop (struct GNUNET_OS_CommandHandle *cmd)
 Stop/kill a command. More...
 
struct GNUNET_OS_CommandHandleGNUNET_OS_command_run (GNUNET_OS_LineProcessor proc, void *proc_cls, struct GNUNET_TIME_Relative timeout, const char *binary,...)
 Run the given command line and call the given function for each line of the output. More...
 
int GNUNET_OS_process_status (struct GNUNET_OS_Process *proc, enum GNUNET_OS_ProcessStatusType *type, unsigned long *code)
 Retrieve the status of a process. More...
 
int GNUNET_OS_process_wait (struct GNUNET_OS_Process *proc)
 Wait for a process to terminate. More...
 
int GNUNET_OS_process_wait_status (struct GNUNET_OS_Process *proc, enum GNUNET_OS_ProcessStatusType *type, unsigned long *code)
 Retrieve the status of a process, waiting on it if dead. More...
 
void GNUNET_OS_install_parent_control_handler (void *cls)
 Connects this process to its parent via pipe; essentially, the parent control handler will read signal numbers from the GNUNET_OS_CONTROL_PIPE (as given in an environment variable) and raise those signals. More...
 
int GNUNET_OS_check_helper_binary (const char *binary, int check_suid, const char *params)
 Check whether an executable exists and possibly if the suid bit is set on the file. More...
 

Detailed Description

Low level process routines.

This code manages child processes. We can communicate with child processes using signals. Because signals are not supported on W32 and Java (at least not nicely), we can alternatively use a pipe to send signals to the child processes (if the child process is a full-blown GNUnet process that supports reading signals from a pipe, of course). Naturally, this also only works for 'normal' termination via signals, and not as a replacement for SIGKILL. Thus using pipes to communicate signals should only be enabled if the child is a Java process OR if we are on Windoze.

Macro Definition Documentation

◆ GNUNET_OS_get_hostname_max_length

#define GNUNET_OS_get_hostname_max_length ( )    255

Get maximum string length returned by gethostname()

Definition at line 412 of file gnunet_os_lib.h.

Referenced by GNUNET_RESOLVER_hostname_resolve(), GNUNET_RESOLVER_local_fqdn_get(), GST_stats_init(), logger_run(), and run().

Typedef Documentation

◆ GNUNET_OS_NetworkInterfaceProcessor

typedef int(* GNUNET_OS_NetworkInterfaceProcessor) (void *cls, const char *name, int isDefault, const struct sockaddr *addr, const struct sockaddr *broadcast_addr, const struct sockaddr *netmask, socklen_t addrlen)

Callback function invoked for each interface found.

Parameters
clsclosure
namename of the interface (can be NULL for unknown)
isDefaultis this presumably the default interface
addraddress of this interface (can be NULL for unknown or unassigned)
broadcast_addrthe broadcast address (can be NULL for unknown or unassigned)
netmaskthe network mask (can be NULL for unknown or unassigned)
addrlenlength of the address
Returns
GNUNET_OK to continue iteration, GNUNET_SYSERR to abort

Definition at line 383 of file gnunet_os_lib.h.

◆ GNUNET_OS_LineProcessor

typedef void(* GNUNET_OS_LineProcessor) (void *cls, const char *line)

Type of a function to process a line of output.

Parameters
clsclosure
lineline of output from a command, NULL for the end

Definition at line 571 of file gnunet_os_lib.h.

Enumeration Type Documentation

◆ GNUNET_OS_InheritStdioFlags

Flags that determine which of the standard streams should be inherited by the child process.

Enumerator
GNUNET_OS_INHERIT_STD_NONE 

No standard streams should be inherited.

GNUNET_OS_INHERIT_STD_IN 

When this flag is set, the child process will inherit stdin of the parent.

GNUNET_OS_INHERIT_STD_OUT 

When this flag is set, the child process will inherit stdout of the parent.

GNUNET_OS_INHERIT_STD_ERR 

When this flag is set, the child process will inherit stderr of the parent.

GNUNET_OS_INHERIT_STD_OUT_AND_ERR 

When these flags are set, the child process will inherit stdout and stderr of the parent.

GNUNET_OS_INHERIT_STD_ALL 

Use this option to have all of the standard streams (stdin, stdout and stderror) be inherited.

GNUNET_OS_USE_PIPE_CONTROL 

Should a pipe be used to send signals to the child?

Definition at line 68 of file gnunet_os_lib.h.

69 {
74 
80 
86 
92 
98 
104 
109 };
When this flag is set, the child process will inherit stderr of the parent.
Definition: gnunet_os_lib.h:91
When this flag is set, the child process will inherit stdin of the parent.
Definition: gnunet_os_lib.h:79
Use this option to have all of the standard streams (stdin, stdout and stderror) be inherited...
No standard streams should be inherited.
Definition: gnunet_os_lib.h:73
When this flag is set, the child process will inherit stdout of the parent.
Definition: gnunet_os_lib.h:85
When these flags are set, the child process will inherit stdout and stderr of the parent...
Definition: gnunet_os_lib.h:97
Should a pipe be used to send signals to the child?

◆ GNUNET_OS_InstallationPathKind

Possible installation paths to request.

Enumerator
GNUNET_OS_IPK_PREFIX 

Return the "PREFIX" directory given to configure.

GNUNET_OS_IPK_BINDIR 

Return the directory where the program binaries are installed.

(bin/)

GNUNET_OS_IPK_LIBDIR 

Return the directory where libraries are installed.

(lib/gnunet/)

GNUNET_OS_IPK_DATADIR 

Return the directory where data is installed (share/gnunet/)

GNUNET_OS_IPK_LOCALEDIR 

Return the directory where translations are installed (share/locale/)

GNUNET_OS_IPK_SELF_PREFIX 

Return the installation directory of this application, not the one of the overall GNUnet installation (in case they are different).

GNUNET_OS_IPK_ICONDIR 

Return the prefix of the path with application icons (share/icons/).

GNUNET_OS_IPK_DOCDIR 

Return the prefix of the path with documentation files, including the license (share/doc/gnunet/).

GNUNET_OS_IPK_LIBEXECDIR 

Return the directory where helper binaries are installed (lib/gnunet/libexec/)

Definition at line 121 of file gnunet_os_lib.h.

122 {
127 
132 
137 
142 
147 
154 
159 
165 
170 };
Return the directory where translations are installed (share/locale/)
Return the directory where libraries are installed.
Return the "PREFIX" directory given to configure.
Return the prefix of the path with documentation files, including the license (share/doc/gnunet/).
Return the directory where helper binaries are installed (lib/gnunet/libexec/)
Return the installation directory of this application, not the one of the overall GNUnet installation...
Return the directory where the program binaries are installed.
Return the prefix of the path with application icons (share/icons/).
Return the directory where data is installed (share/gnunet/)

◆ GNUNET_OS_ProcessStatusType

Process status types.

Enumerator
GNUNET_OS_PROCESS_UNKNOWN 

The process is not known to the OS (or at least not one of our children).

GNUNET_OS_PROCESS_RUNNING 

The process is still running.

GNUNET_OS_PROCESS_STOPPED 

The process is paused (but could be resumed).

GNUNET_OS_PROCESS_EXITED 

The process exited with a return code.

GNUNET_OS_PROCESS_SIGNALED 

The process was killed by a signal.

Definition at line 176 of file gnunet_os_lib.h.

177 {
183 
188 
193 
198 
203 };
The process exited with a return code.
The process was killed by a signal.
The process is still running.
The process is not known to the OS (or at least not one of our children).
The process is paused (but could be resumed).

Function Documentation

◆ GNUNET_OS_project_data_default()

const struct GNUNET_OS_ProjectData* GNUNET_OS_project_data_default ( void  )

Return default project data used by 'libgnunetutil' for GNUnet.

Definition at line 93 of file os_installation.c.

References default_pd.

Referenced by __attribute__(), GNUNET_CONFIGURATION_default(), and init().

94 {
95  return &default_pd;
96 }
static const struct GNUNET_OS_ProjectData default_pd
Default project data used for installation path detection for GNUnet (core).
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◆ GNUNET_OS_project_data_get()

const struct GNUNET_OS_ProjectData* GNUNET_OS_project_data_get ( void  )
Returns
current (actual) project data.
current project data.

Definition at line 103 of file os_installation.c.

References bindtextdomain, current_pd, gettextinit, GNUNET_free, GNUNET_OS_installation_get_path(), and GNUNET_OS_IPK_LOCALEDIR.

Referenced by __attribute__(), format_help(), GNUNET_CADET_open_port(), GNUNET_CONFIGURATION_default(), GNUNET_CONFIGURATION_load(), GNUNET_PROGRAM_run2(), GNUNET_SERVICE_run_(), init(), LEGACY_SERVICE_run(), return_agpl(), run(), and set_cont().

104 {
105  if (0 == gettextinit)
106  {
108  if (NULL != path)
109  bindtextdomain (PACKAGE, path);
110  GNUNET_free (path);
111  gettextinit = 1;
112  }
113  return current_pd;
114 }
Return the directory where translations are installed (share/locale/)
#define bindtextdomain(Domainname, Dirname)
Definition: gettext.h:57
char * GNUNET_OS_installation_get_path(enum GNUNET_OS_InstallationPathKind dirkind)
get the path to a specific GNUnet installation directory or, with GNUNET_OS_IPK_SELF_PREFIX, the current running apps installation directory
static const struct GNUNET_OS_ProjectData * current_pd
Which project data do we currently use for installation path detection? Never NULL.
static int gettextinit
Wether or not gettext has been initialized for the library.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_OS_init()

void GNUNET_OS_init ( const struct GNUNET_OS_ProjectData pd)

Setup OS subsystem with project data.

Parameters
pdproject data used to determine paths.
pdproject data used to determine paths

Definition at line 123 of file os_installation.c.

References bindtextdomain, buf, dir, removetrailingwhitespace::f, fn, gettextinit, GNUNET_asprintf(), GNUNET_assert, GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_malloc, GNUNET_OS_installation_get_path(), GNUNET_OS_IPK_LOCALEDIR, GNUNET_snprintf(), GNUNET_strdup, len, GNUNET_OS_ProjectData::libname, line, LOG_STRERROR_FILE, p, GNUNET_OS_ProjectData::project_dirname, size, and zero.

Referenced by __attribute__(), GNUNET_CONFIGURATION_default(), and init().

124 {
125  if (0 == gettextinit)
126  {
128  if (NULL != path)
129  bindtextdomain (PACKAGE, path);
130  GNUNET_free (path);
131  gettextinit = 1;
132  }
133  GNUNET_assert (NULL != pd);
134  current_pd = pd;
135 }
Return the directory where translations are installed (share/locale/)
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define bindtextdomain(Domainname, Dirname)
Definition: gettext.h:57
char * GNUNET_OS_installation_get_path(enum GNUNET_OS_InstallationPathKind dirkind)
get the path to a specific GNUnet installation directory or, with GNUNET_OS_IPK_SELF_PREFIX, the current running apps installation directory
static const struct GNUNET_OS_ProjectData * current_pd
Which project data do we currently use for installation path detection? Never NULL.
static int gettextinit
Wether or not gettext has been initialized for the library.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_OS_installation_get_path()

char* GNUNET_OS_installation_get_path ( enum GNUNET_OS_InstallationPathKind  dirkind)

Get the path to a specific GNUnet installation directory or, with GNUNET_OS_IPK_SELF_PREFIX, the current running apps installation directory.

Parameters
dirkindwhat kind of directory is desired?
Returns
a pointer to the dir path (to be freed by the caller)

Get the path to a specific GNUnet installation directory or, with GNUNET_OS_IPK_SELF_PREFIX, the current running apps installation directory.

Returns
a pointer to the dir path (to be freed by the caller)

Definition at line 444 of file os_installation.c.

References DIR_SEPARATOR, DIR_SEPARATOR_STR, GNUNET_asprintf(), GNUNET_DISK_directory_test(), GNUNET_free, GNUNET_OS_IPK_BINDIR, GNUNET_OS_IPK_DATADIR, GNUNET_OS_IPK_DOCDIR, GNUNET_OS_IPK_ICONDIR, GNUNET_OS_IPK_LIBDIR, GNUNET_OS_IPK_LIBEXECDIR, GNUNET_OS_IPK_LOCALEDIR, GNUNET_OS_IPK_PREFIX, GNUNET_OS_IPK_SELF_PREFIX, GNUNET_strdup, GNUNET_YES, os_get_exec_path(), os_get_gnunet_path(), and GNUNET_OS_ProjectData::project_dirname.

Referenced by GNUNET_CONFIGURATION_create(), GNUNET_CONFIGURATION_load(), GNUNET_OS_get_libexec_binary_path(), GNUNET_OS_init(), GNUNET_OS_project_data_get(), GNUNET_PLUGIN_load_all(), GNUNET_PROGRAM_run2(), GNUNET_SERVICE_run_(), hostkeys_load(), load_keys(), plugin_init(), and run().

445 {
446  size_t n;
447  char *dirname;
448  char *execpath = NULL;
449  char *tmp;
450  char *multiarch;
451  char *libdir;
452  int isbasedir;
453 
454  /* if wanted, try to get the current app's bin/ */
455  if (dirkind == GNUNET_OS_IPK_SELF_PREFIX)
456  execpath = os_get_exec_path ();
457 
458  /* try to get GNUnet's bin/ or lib/, or if previous was unsuccessful some
459  * guess for the current app */
460  if (NULL == execpath)
461  execpath = os_get_gnunet_path ();
462 
463  if (NULL == execpath)
464  return NULL;
465 
466  n = strlen (execpath);
467  if (0 == n)
468  {
469  /* should never happen, but better safe than sorry */
470  GNUNET_free (execpath);
471  return NULL;
472  }
473  /* remove filename itself */
474  while ((n > 1) && (DIR_SEPARATOR == execpath[n - 1]))
475  execpath[--n] = '\0';
476 
477  isbasedir = 1;
478  if ((n > 6) && ((0 == strcasecmp (&execpath[n - 6], "/lib32")) ||
479  (0 == strcasecmp (&execpath[n - 6], "/lib64"))))
480  {
481  if ((GNUNET_OS_IPK_LIBDIR != dirkind) &&
482  (GNUNET_OS_IPK_LIBEXECDIR != dirkind))
483  {
484  /* strip '/lib32' or '/lib64' */
485  execpath[n - 6] = '\0';
486  n -= 6;
487  }
488  else
489  isbasedir = 0;
490  }
491  else if ((n > 4) && ((0 == strcasecmp (&execpath[n - 4], "/bin")) ||
492  (0 == strcasecmp (&execpath[n - 4], "/lib"))))
493  {
494  /* strip '/bin' or '/lib' */
495  execpath[n - 4] = '\0';
496  n -= 4;
497  }
498  multiarch = NULL;
499  if (NULL != (libdir = strstr (execpath, "/lib/")))
500  {
501  /* test for multi-arch path of the form "PREFIX/lib/MULTIARCH/";
502  here we need to re-add 'multiarch' to lib and libexec paths later! */
503  multiarch = &libdir[5];
504  if (NULL == strchr (multiarch, '/'))
505  libdir[0] =
506  '\0'; /* Debian multiarch format, cut of from 'execpath' but preserve in multicarch */
507  else
508  multiarch =
509  NULL; /* maybe not, multiarch still has a '/', which is not OK */
510  }
511  /* in case this was a directory named foo-bin, remove "foo-" */
512  while ((n > 1) && (execpath[n - 1] == DIR_SEPARATOR))
513  execpath[--n] = '\0';
514  switch (dirkind)
515  {
518  dirname = GNUNET_strdup (DIR_SEPARATOR_STR);
519  break;
520 
523  break;
524 
526  if (isbasedir)
527  {
528  GNUNET_asprintf (&tmp,
529  "%s%s%s%s%s%s%s",
530  execpath,
531  DIR_SEPARATOR_STR "lib",
532  (NULL != multiarch) ? DIR_SEPARATOR_STR : "",
533  (NULL != multiarch) ? multiarch : "",
534  DIR_SEPARATOR_STR,
536  DIR_SEPARATOR_STR);
538  {
539  GNUNET_free (execpath);
540  return tmp;
541  }
542  GNUNET_free (tmp);
543  tmp = NULL;
544  dirname = NULL;
545  if (4 == sizeof(void *))
546  {
547  GNUNET_asprintf (&dirname,
548  DIR_SEPARATOR_STR "lib32" DIR_SEPARATOR_STR
549  "%s" DIR_SEPARATOR_STR,
551  GNUNET_asprintf (&tmp, "%s%s", execpath, dirname);
552  }
553  if (8 == sizeof(void *))
554  {
555  GNUNET_asprintf (&dirname,
556  DIR_SEPARATOR_STR "lib64" DIR_SEPARATOR_STR
557  "%s" DIR_SEPARATOR_STR,
559  GNUNET_asprintf (&tmp, "%s%s", execpath, dirname);
560  }
561 
562  if ((NULL != tmp) &&
564  {
565  GNUNET_free (execpath);
566  GNUNET_free (dirname);
567  return tmp;
568  }
569  GNUNET_free (tmp);
570  GNUNET_free (dirname);
571  }
572  GNUNET_asprintf (&dirname,
573  DIR_SEPARATOR_STR "%s" DIR_SEPARATOR_STR,
575  break;
576 
578  GNUNET_asprintf (&dirname,
579  DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR
580  "%s" DIR_SEPARATOR_STR,
582  break;
583 
585  dirname = GNUNET_strdup (DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR
586  "locale" DIR_SEPARATOR_STR);
587  break;
588 
590  dirname = GNUNET_strdup (DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR
591  "icons" DIR_SEPARATOR_STR);
592  break;
593 
595  GNUNET_asprintf (&dirname,
596  DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR
597  "doc" DIR_SEPARATOR_STR
598  "%s" DIR_SEPARATOR_STR,
600  break;
601 
603  if (isbasedir)
604  {
605  GNUNET_asprintf (&dirname,
606  DIR_SEPARATOR_STR "%s" DIR_SEPARATOR_STR
607  "libexec" DIR_SEPARATOR_STR,
609  GNUNET_asprintf (&tmp,
610  "%s%s%s%s",
611  execpath,
612  DIR_SEPARATOR_STR "lib" DIR_SEPARATOR_STR,
613  (NULL != multiarch) ? multiarch : "",
614  dirname);
615  GNUNET_free (dirname);
617  {
618  GNUNET_free (execpath);
619  return tmp;
620  }
621  GNUNET_free (tmp);
622  tmp = NULL;
623  dirname = NULL;
624  if (4 == sizeof(void *))
625  {
626  GNUNET_asprintf (&dirname,
627  DIR_SEPARATOR_STR "lib32" DIR_SEPARATOR_STR
628  "%s" DIR_SEPARATOR_STR
629  "libexec" DIR_SEPARATOR_STR,
631  GNUNET_asprintf (&tmp, "%s%s", execpath, dirname);
632  }
633  if (8 == sizeof(void *))
634  {
635  GNUNET_asprintf (&dirname,
636  DIR_SEPARATOR_STR "lib64" DIR_SEPARATOR_STR
637  "%s" DIR_SEPARATOR_STR
638  "libexec" DIR_SEPARATOR_STR,
640  GNUNET_asprintf (&tmp, "%s%s", execpath, dirname);
641  }
642  if ((NULL != tmp) &&
644  {
645  GNUNET_free (execpath);
646  GNUNET_free (dirname);
647  return tmp;
648  }
649  GNUNET_free (tmp);
650  GNUNET_free (dirname);
651  }
652  GNUNET_asprintf (&dirname,
653  DIR_SEPARATOR_STR "%s" DIR_SEPARATOR_STR
654  "libexec" DIR_SEPARATOR_STR,
656  break;
657 
658  default:
659  GNUNET_free (execpath);
660  return NULL;
661  }
662  GNUNET_asprintf (&tmp, "%s%s", execpath, dirname);
663  GNUNET_free (dirname);
664  GNUNET_free (execpath);
665  return tmp;
666 }
Return the directory where translations are installed (share/locale/)
Return the directory where libraries are installed.
const char * project_dirname
Name of the project that is used in the "libexec" prefix, For example, "gnunet".
static char * os_get_gnunet_path()
get the path to GNUnet bin/ or lib/, prefering the lib/ path
int GNUNET_DISK_directory_test(const char *fil, int is_readable)
Test if fil is a directory and listable.
Definition: disk.c:503
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
Return the "PREFIX" directory given to configure.
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
Return the prefix of the path with documentation files, including the license (share/doc/gnunet/).
#define DIR_SEPARATOR_STR
Definition: platform.h:171
Return the directory where helper binaries are installed (lib/gnunet/libexec/)
#define DIR_SEPARATOR
Definition: platform.h:170
static char * os_get_exec_path()
get the path to current app's bin/
static const struct GNUNET_OS_ProjectData * current_pd
Which project data do we currently use for installation path detection? Never NULL.
Return the installation directory of this application, not the one of the overall GNUnet installation...
Return the directory where the program binaries are installed.
Return the prefix of the path with application icons (share/icons/).
Return the directory where data is installed (share/gnunet/)
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_OS_get_libexec_binary_path()

char* GNUNET_OS_get_libexec_binary_path ( const char *  progname)

Given the name of a gnunet-helper, gnunet-service or gnunet-daemon binary, try to prefix it with the libexec/-directory to get the full path.

Parameters
prognamename of the binary
Returns
full path to the binary, if possible, otherwise copy of 'progname'

Definition at line 678 of file os_installation.c.

References cache, DIR_SEPARATOR, GNUNET_asprintf(), GNUNET_NO, GNUNET_OS_installation_get_path(), GNUNET_OS_IPK_LIBEXECDIR, GNUNET_strdup, GNUNET_STRINGS_path_is_absolute(), and GNUNET_YES.

Referenced by communicator_start(), GNUNET_HELPER_start(), GNUNET_OS_get_suid_binary_path(), GNUNET_TESTBED_controller_start(), GNUNET_TESTBED_is_host_habitable(), GNUNET_TESTING_peer_configure(), GNUNET_TESTING_service_run(), LIBGNUNET_PLUGIN_TRANSPORT_INIT(), nat_start(), peerstore_start(), resolver_start(), start_arm_service(), start_process(), start_shared_service_instance(), test_icmp_client(), test_icmp_server(), and tokenizer_cb().

679 {
680  static char *cache;
681  char *libexecdir;
682  char *binary;
683 
684  if ((DIR_SEPARATOR == progname[0]) ||
685  (GNUNET_YES ==
686  GNUNET_STRINGS_path_is_absolute (progname, GNUNET_NO, NULL, NULL)))
687  return GNUNET_strdup (progname);
688  if (NULL != cache)
689  libexecdir = cache;
690  else
692  if (NULL == libexecdir)
693  return GNUNET_strdup (progname);
694  GNUNET_asprintf (&binary, "%s%s", libexecdir, progname);
695  cache = libexecdir;
696  return binary;
697 }
int GNUNET_STRINGS_path_is_absolute(const char *filename, int can_be_uri, int *r_is_uri, char **r_uri_scheme)
Check whether filename is absolute or not, and if it's an URI.
Definition: strings.c:1129
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
char * GNUNET_OS_installation_get_path(enum GNUNET_OS_InstallationPathKind dirkind)
get the path to a specific GNUnet installation directory or, with GNUNET_OS_IPK_SELF_PREFIX, the current running apps installation directory
Return the directory where helper binaries are installed (lib/gnunet/libexec/)
#define DIR_SEPARATOR
Definition: platform.h:170
static struct GNUNET_CONTAINER_MultiHashMap32 * cache
Hashmap to maintain cache.
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◆ GNUNET_OS_get_suid_binary_path()

char* GNUNET_OS_get_suid_binary_path ( const struct GNUNET_CONFIGURATION_Handle cfg,
const char *  progname 
)

Given the name of a helper, service or daemon binary construct the full path to the binary using the SUID_BINARY_PATH in the PATHS section of the configuration.

If that option is not present, fall back to GNUNET_OS_get_libexec_binary_path. If progname is an absolute path, a copy of this path is returned.

Parameters
cfgconfiguration to inspect
prognamename of the binary
Returns
full path to the binary, if possible, a copy of progname otherwise

Definition at line 713 of file os_installation.c.

References cache, DIR_SEPARATOR, DIR_SEPARATOR_STR, GNUNET_asprintf(), GNUNET_CONFIGURATION_get_value_string(), GNUNET_NO, GNUNET_OS_get_libexec_binary_path(), GNUNET_strdup, GNUNET_STRINGS_path_is_absolute(), and GNUNET_YES.

Referenced by GN_request_connection_reversal(), restart_nat_server(), and run().

715 {
716  static char *cache;
717  char *binary = NULL;
718  char *path = NULL;
719  size_t path_len;
720 
721  if (GNUNET_YES ==
722  GNUNET_STRINGS_path_is_absolute (progname, GNUNET_NO, NULL, NULL))
723  {
724  return GNUNET_strdup (progname);
725  }
726  if (NULL != cache)
727  path = cache;
728  else
730  "PATHS",
731  "SUID_BINARY_PATH",
732  &path);
733  if ((NULL == path) || (0 == strlen (path)))
734  return GNUNET_OS_get_libexec_binary_path (progname);
735  path_len = strlen (path);
736  GNUNET_asprintf (&binary,
737  "%s%s%s",
738  path,
739  (path[path_len - 1] == DIR_SEPARATOR) ? ""
741  progname);
742  cache = path;
743  return binary;
744 }
int GNUNET_STRINGS_path_is_absolute(const char *filename, int can_be_uri, int *r_is_uri, char **r_uri_scheme)
Check whether filename is absolute or not, and if it's an URI.
Definition: strings.c:1129
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
#define DIR_SEPARATOR_STR
Definition: platform.h:171
int GNUNET_CONFIGURATION_get_value_string(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be a string.
#define DIR_SEPARATOR
Definition: platform.h:170
static struct GNUNET_CONTAINER_MultiHashMap32 * cache
Hashmap to maintain cache.
char * GNUNET_OS_get_libexec_binary_path(const char *progname)
Given the name of a gnunet-helper, gnunet-service or gnunet-daemon binary, try to prefix it with the ...
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◆ GNUNET_OS_network_interfaces_list()

void GNUNET_OS_network_interfaces_list ( GNUNET_OS_NetworkInterfaceProcessor  proc,
void *  proc_cls 
)

Enumerate all network interfaces.

Parameters
procthe callback function
proc_clsclosure for proc

Definition at line 396 of file os_network.c.

References GNUNET_ERROR_TYPE_BULK, GNUNET_ERROR_TYPE_WARNING, GNUNET_OK, LOG, try_ifconfig(), and try_ip().

Referenced by do_broadcast(), get_addresses(), GNUNET_NT_scanner_init(), host_habitable_cb(), run_scan(), setup_broadcast(), and test_local_ip().

398 {
399 #if HAVE_GETIFADDRS && HAVE_FREEIFADDRS
400  struct ifaddrs *ifa_first;
401  struct ifaddrs *ifa_ptr;
402  socklen_t alen;
403 
404  if (getifaddrs (&ifa_first) == 0)
405  {
406  for (ifa_ptr = ifa_first; ifa_ptr != NULL; ifa_ptr = ifa_ptr->ifa_next)
407  {
408  if ((ifa_ptr->ifa_name != NULL) && (ifa_ptr->ifa_addr != NULL) &&
409  ( (ifa_ptr->ifa_flags & IFF_UP) != 0) )
410  {
411  if ((ifa_ptr->ifa_addr->sa_family != AF_INET) &&
412  (ifa_ptr->ifa_addr->sa_family != AF_INET6))
413  continue;
414  if (ifa_ptr->ifa_addr->sa_family == AF_INET)
415  alen = sizeof(struct sockaddr_in);
416  else
417  alen = sizeof(struct sockaddr_in6);
418  if (GNUNET_OK !=
419  proc (proc_cls, ifa_ptr->ifa_name,
420  (0 == strcmp (ifa_ptr->ifa_name, GNUNET_DEFAULT_INTERFACE)),
421  ifa_ptr->ifa_addr, ifa_ptr->ifa_broadaddr,
422  ifa_ptr->ifa_netmask, alen))
423  break;
424  }
425  }
426  freeifaddrs (ifa_first);
427  }
428 #else
429  if (GNUNET_OK ==
430  try_ip (proc,
431  proc_cls))
432  return;
433  if (GNUNET_OK ==
434  try_ifconfig (proc,
435  proc_cls))
436  return;
438  "Failed to enumerate network interfaces\n");
439 #endif
440 }
#define LOG(kind,...)
Definition: os_network.c:34
static int try_ip(GNUNET_OS_NetworkInterfaceProcessor proc, void *proc_cls)
Try to enumerate all network interfaces using 'ip'.
Definition: os_network.c:244
static int try_ifconfig(GNUNET_OS_NetworkInterfaceProcessor proc, void *proc_cls)
Try to enumerate all network interfaces using 'ifconfig'.
Definition: os_network.c:51
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◆ GNUNET_OS_process_current()

struct GNUNET_OS_Process* GNUNET_OS_process_current ( void  )

Get process structure for current process.

The pointer it returns points to static memory location and must not be deallocated/closed

Returns
pointer to the process sturcutre for this process

The pointer it returns points to static memory location and must not be deallocated/closed.

Returns
pointer to the process sturcutre for this process

Definition at line 210 of file os_priority.c.

References current_process, and GNUNET_OS_Process::pid.

211 {
212  current_process.pid = 0;
213  return &current_process;
214 }
pid_t pid
PID of the process.
Definition: os_priority.c:48
static struct GNUNET_OS_Process current_process
Handle for 'this' process.
Definition: os_priority.c:62

◆ GNUNET_OS_process_kill()

int GNUNET_OS_process_kill ( struct GNUNET_OS_Process proc,
int  sig 
)

Sends a signal to the process.

Parameters
procpointer to process structure
sigsignal
Returns
0 on success, -1 on error

Definition at line 225 of file os_priority.c.

References GNUNET_OS_Process::control_pipe, GNUNET_DISK_file_write(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_TERM_SIG, LOG, GNUNET_OS_Process::pid, and ret.

Referenced by do_stop_task(), GN_stop_gnunet_nat_server_(), GNUNET_HELPER_kill(), GNUNET_NAT_mini_get_external_ipv4_cancel_(), GNUNET_OS_command_stop(), GNUNET_TESTBED_is_host_habitable_cancel(), GNUNET_TESTING_peer_kill(), handle_stop(), maint_child_death(), nat_server_read(), shutdown_process(), shutdown_task(), stop_shared_service_instance(), and terminate_task().

226 {
227  int ret;
228  char csig;
229 
230  csig = (char) sig;
231  if (NULL != proc->control_pipe)
232  {
234  "Sending signal %d to pid: %u via pipe\n",
235  sig,
236  proc->pid);
237  ret = GNUNET_DISK_file_write (proc->control_pipe, &csig, sizeof(csig));
238  if (sizeof(csig) == ret)
239  return 0;
240  }
241  /* pipe failed or non-existent, try other methods */
242  switch (sig)
243  {
244  case SIGHUP:
245  case SIGINT:
246  case SIGKILL:
247  case SIGTERM:
248 #if (SIGTERM != GNUNET_TERM_SIG)
249  case GNUNET_TERM_SIG:
250 #endif
252  "Sending signal %d to pid: %u via system call\n",
253  sig,
254  proc->pid);
255  return kill (proc->pid, sig);
256  default:
258  "Sending signal %d to pid: %u via system call\n",
259  sig,
260  proc->pid);
261  return kill (proc->pid, sig);
262  }
263 }
pid_t pid
PID of the process.
Definition: os_priority.c:48
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
ssize_t GNUNET_DISK_file_write(const struct GNUNET_DISK_FileHandle *h, const void *buffer, size_t n)
Write a buffer to a file.
Definition: disk.c:820
struct GNUNET_DISK_FileHandle * control_pipe
Pipe we use to signal the process.
Definition: os_priority.c:55
#define GNUNET_TERM_SIG
The termination signal.
Definition: platform.h:246
#define LOG(kind,...)
Definition: os_priority.c:32
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◆ GNUNET_OS_process_destroy()

void GNUNET_OS_process_destroy ( struct GNUNET_OS_Process proc)

Cleans up process structure contents (OS-dependent) and deallocates it.

Parameters
procpointer to process structure

Definition at line 287 of file os_priority.c.

References GNUNET_OS_Process::control_pipe, GNUNET_DISK_file_close(), and GNUNET_free.

Referenced by apply_patch(), child_death_task(), GN_request_connection_reversal(), GN_stop_gnunet_nat_server_(), GNUNET_HELPER_wait(), GNUNET_NAT_mini_get_external_ipv4_cancel_(), GNUNET_OS_command_stop(), GNUNET_TESTBED_is_host_habitable_cancel(), GNUNET_TESTING_peer_wait(), habitability_check(), maint_child_death(), nat_server_read(), server_log(), shutdown_process(), shutdown_task(), start_arm_service(), and stop_shared_service_instance().

288 {
289  if (NULL != proc->control_pipe)
291 
292  GNUNET_free (proc);
293 }
int GNUNET_DISK_file_close(struct GNUNET_DISK_FileHandle *h)
Close an open file.
Definition: disk.c:1280
struct GNUNET_DISK_FileHandle * control_pipe
Pipe we use to signal the process.
Definition: os_priority.c:55
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_OS_process_get_pid()

pid_t GNUNET_OS_process_get_pid ( struct GNUNET_OS_Process proc)

Get the pid of the process in question.

Parameters
procthe process to get the pid of
Returns
the current process id

Definition at line 274 of file os_priority.c.

References GNUNET_OS_Process::pid.

Referenced by maint_child_death().

275 {
276  return proc->pid;
277 }
pid_t pid
PID of the process.
Definition: os_priority.c:48
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◆ GNUNET_OS_start_process_vap()

struct GNUNET_OS_Process* GNUNET_OS_start_process_vap ( enum GNUNET_OS_InheritStdioFlags  std_inheritance,
struct GNUNET_DISK_PipeHandle pipe_stdin,
struct GNUNET_DISK_PipeHandle pipe_stdout,
struct GNUNET_DISK_PipeHandle pipe_stderr,
const char *  filename,
char *const  argv[] 
)

Start a process.

Parameters
std_inheritancea set of GNUNET_OS_INHERIT_STD_* flags
pipe_stdinpipe to use to send input to child process (or NULL)
pipe_stdoutpipe to use to get output from child process (or NULL)
pipe_stderrpipe to use to get error output from child process (or NULL)
filenamename of the binary
argvNULL-terminated array of arguments to the process
Returns
pointer to process structure of the new process, NULL on error
Parameters
std_inheritancea set of GNUNET_OS_INHERIT_STD_* flags
pipe_stdinpipe to use to send input to child process (or NULL)
pipe_stdoutpipe to use to get output from child process (or NULL)
pipe_stderrpipe to use to get output from child process (or NULL)
filenamename of the binary
argvNULL-terminated array of arguments to the process
Returns
pointer to process structure of the new process, NULL on error

Definition at line 604 of file os_priority.c.

References start_process().

Referenced by GNUNET_OS_start_process_va(), GNUNET_TESTBED_is_host_habitable(), gnunet_uri(), main(), run(), start_helper(), and work().

610 {
611  return start_process (std_inheritance,
612  pipe_stdin,
613  pipe_stdout,
614  pipe_stderr,
615  NULL,
616  filename,
617  argv);
618 }
static struct GNUNET_OS_Process * start_process(enum GNUNET_OS_InheritStdioFlags std_inheritance, struct GNUNET_DISK_PipeHandle *pipe_stdin, struct GNUNET_DISK_PipeHandle *pipe_stdout, struct GNUNET_DISK_PipeHandle *pipe_stderr, const int *lsocks, const char *filename, char *const argv[])
Start a process.
Definition: os_priority.c:343
static char * filename
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◆ GNUNET_OS_start_process()

struct GNUNET_OS_Process* GNUNET_OS_start_process ( enum GNUNET_OS_InheritStdioFlags  std_inheritance,
struct GNUNET_DISK_PipeHandle pipe_stdin,
struct GNUNET_DISK_PipeHandle pipe_stdout,
struct GNUNET_DISK_PipeHandle pipe_stderr,
const char *  filename,
  ... 
)

Start a process.

Parameters
std_inheritancea set of GNUNET_OS_INHERIT_STD_* flags
pipe_stdinpipe to use to send input to child process (or NULL)
pipe_stdoutpipe to use to get output from child process (or NULL)
pipe_stderrpipe to use to get error output from child process (or NULL)
filenamename of the binary
...NULL-terminated list of arguments to the process
Returns
pointer to process structure of the new process, NULL on error
Parameters
std_inheritancea set of GNUNET_OS_INHERIT_STD_* flags
pipe_stdinpipe to use to send input to child process (or NULL)
pipe_stdoutpipe to use to get output from child process (or NULL)
filenamename of the binary
...NULL-terminated list of arguments to the process
Returns
pointer to process structure of the new process, NULL on error

Definition at line 678 of file os_priority.c.

References GNUNET_OS_start_process_va(), and ret.

Referenced by apply_patch(), GN_request_connection_reversal(), GNUNET_NAT_mini_get_external_ipv4_(), nat_start(), peerstore_start(), resolver_start(), restart_nat_server(), run(), server_log(), start_shared_service_instance(), and tokenizer_cb().

684 {
685  struct GNUNET_OS_Process *ret;
686  va_list ap;
687 
688  va_start (ap, filename);
689  ret = GNUNET_OS_start_process_va (std_inheritance,
690  pipe_stdin,
691  pipe_stdout,
692  pipe_stderr,
693  filename,
694  ap);
695  va_end (ap);
696  return ret;
697 }
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
static char * filename
struct GNUNET_OS_Process * GNUNET_OS_start_process_va(enum GNUNET_OS_InheritStdioFlags std_inheritance, struct GNUNET_DISK_PipeHandle *pipe_stdin, struct GNUNET_DISK_PipeHandle *pipe_stdout, struct GNUNET_DISK_PipeHandle *pipe_stderr, const char *filename, va_list va)
Start a process.
Definition: os_priority.c:633
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◆ GNUNET_OS_start_process_va()

struct GNUNET_OS_Process* GNUNET_OS_start_process_va ( enum GNUNET_OS_InheritStdioFlags  std_inheritance,
struct GNUNET_DISK_PipeHandle pipe_stdin,
struct GNUNET_DISK_PipeHandle pipe_stdout,
struct GNUNET_DISK_PipeHandle pipe_stderr,
const char *  filename,
va_list  va 
)

Start a process.

Parameters
std_inheritancea set of GNUNET_OS_INHERIT_STD_* flags
pipe_stdinpipe to use to send input to child process (or NULL)
pipe_stdoutpipe to use to get output from child process (or NULL)
pipe_stderrpipe to use to get error output from child process (or NULL)
filenamename of the binary
vaNULL-terminated list of arguments to the process
Returns
pointer to process structure of the new process, NULL on error
Parameters
std_inheritancea set of GNUNET_OS_INHERIT_STD_* flags
pipe_stdinpipe to use to send input to child process (or NULL)
pipe_stdoutpipe to use to get output from child process (or NULL)
pipe_stderrpipe to use to get output from child process (or NULL)
filenamename of the binary
vaNULL-terminated list of arguments to the process
Returns
pointer to process structure of the new process, NULL on error

Definition at line 633 of file os_priority.c.

References GNUNET_free, GNUNET_malloc, GNUNET_OS_start_process_vap(), and ret.

Referenced by GNUNET_OS_command_run(), GNUNET_OS_start_process(), and run_process_and_wait().

639 {
640  struct GNUNET_OS_Process *ret;
641  va_list ap;
642  char **argv;
643  int argc;
644 
645  argc = 0;
646  va_copy (ap, va);
647  while (NULL != va_arg (ap, char *))
648  argc++;
649  va_end (ap);
650  argv = GNUNET_malloc (sizeof(char *) * (argc + 1));
651  argc = 0;
652  va_copy (ap, va);
653  while (NULL != (argv[argc] = va_arg (ap, char *)))
654  argc++;
655  va_end (ap);
656  ret = GNUNET_OS_start_process_vap (std_inheritance,
657  pipe_stdin,
658  pipe_stdout,
659  pipe_stderr,
660  filename,
661  argv);
662  GNUNET_free (argv);
663  return ret;
664 }
struct GNUNET_OS_Process * GNUNET_OS_start_process_vap(enum GNUNET_OS_InheritStdioFlags std_inheritance, struct GNUNET_DISK_PipeHandle *pipe_stdin, struct GNUNET_DISK_PipeHandle *pipe_stdout, struct GNUNET_DISK_PipeHandle *pipe_stderr, const char *filename, char *const argv[])
Start a process.
Definition: os_priority.c:604
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
static char * filename
#define GNUNET_malloc(size)
Wrapper around malloc.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_OS_start_process_v()

struct GNUNET_OS_Process* GNUNET_OS_start_process_v ( enum GNUNET_OS_InheritStdioFlags  std_inheritance,
const int *  lsocks,
const char *  filename,
char *const  argv[] 
)

Start a process.

Parameters
std_inheritancea set of GNUNET_OS_INHERIT_STD_* flags
lsocksarray of listen sockets to dup systemd-style (or NULL); must be NULL on platforms where dup is not supported
filenamename of the binary
argvNULL-terminated list of arguments to the process, including the process name as the first argument
Returns
pointer to process structure of the new process, NULL on error
Parameters
std_inheritancea set of GNUNET_OS_INHERIT_STD_* flags controlling which std handles of the parent are inherited by the child. pipe_stdin and pipe_stdout take priority over std_inheritance (when they are non-NULL).
lsocksarray of listen sockets to dup systemd-style (or NULL); must be NULL on platforms where dup is not supported
filenamename of the binary
argvNULL-terminated list of arguments to the process
Returns
process ID of the new process, -1 on error

Definition at line 714 of file os_priority.c.

References start_process().

Referenced by GNUNET_OS_start_process_s().

718 {
719  return start_process (std_inheritance,
720  NULL,
721  NULL,
722  NULL,
723  lsocks,
724  filename,
725  argv);
726 }
static struct GNUNET_OS_Process * start_process(enum GNUNET_OS_InheritStdioFlags std_inheritance, struct GNUNET_DISK_PipeHandle *pipe_stdin, struct GNUNET_DISK_PipeHandle *pipe_stdout, struct GNUNET_DISK_PipeHandle *pipe_stderr, const int *lsocks, const char *filename, char *const argv[])
Start a process.
Definition: os_priority.c:343
static char * filename
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◆ GNUNET_OS_start_process_s()

struct GNUNET_OS_Process* GNUNET_OS_start_process_s ( enum GNUNET_OS_InheritStdioFlags  std_inheritance,
const int *  lsocks,
const char *  filename,
  ... 
)

Start a process.

This function is similar to the GNUNET_OS_start_process_* except that the filename and arguments can have whole strings which contain the arguments. These arguments are to be separated by spaces and are parsed in the order they appear. Arguments containing spaces can be used by quoting them with ".

Parameters
std_inheritancea set of GNUNET_OS_INHERIT_STD_* flags
lsocksarray of listen sockets to dup systemd-style (or NULL); must be NULL on platforms where dup is not supported
filenamename of the binary. It is valid to have the arguments in this string when they are separated by spaces.
...more arguments. Should be of type char *. It is valid to have the arguments in these strings when they are separated by spaces. The last argument MUST be NULL.
Returns
pointer to process structure of the new process, NULL on error

Definition at line 747 of file os_priority.c.

References find_typedefs::arg, filename, GNUNET_free, GNUNET_free_nz, GNUNET_malloc, GNUNET_OS_start_process_v(), GNUNET_strdup, and len.

Referenced by communicator_start(), GNUNET_TESTING_peer_start(), start_arm_service(), and start_process().

751 {
752  va_list ap;
753  char **argv;
754  unsigned int argv_size;
755  const char *arg;
756  const char *rpos;
757  char *pos;
758  char *cp;
759  const char *last;
760  struct GNUNET_OS_Process *proc;
761  char *binary_path;
762  int quote_on;
763  unsigned int i;
764  size_t len;
765 
766  argv_size = 1;
767  va_start (ap, filename);
768  arg = filename;
769  last = NULL;
770  do
771  {
772  rpos = arg;
773  quote_on = 0;
774  while ('\0' != *rpos)
775  {
776  if ('"' == *rpos)
777  {
778  if (1 == quote_on)
779  quote_on = 0;
780  else
781  quote_on = 1;
782  }
783  if ((' ' == *rpos) && (0 == quote_on))
784  {
785  if (NULL != last)
786  argv_size++;
787  last = NULL;
788  rpos++;
789  while (' ' == *rpos)
790  rpos++;
791  }
792  if ((NULL == last) && ('\0' != *rpos)) // FIXME: == or !=?
793  last = rpos;
794  if ('\0' != *rpos)
795  rpos++;
796  }
797  if (NULL != last)
798  argv_size++;
799  }
800  while (NULL != (arg = (va_arg (ap, const char *))));
801  va_end (ap);
802 
803  argv = GNUNET_malloc (argv_size * sizeof(char *));
804  argv_size = 0;
805  va_start (ap, filename);
806  arg = filename;
807  last = NULL;
808  do
809  {
810  cp = GNUNET_strdup (arg);
811  quote_on = 0;
812  pos = cp;
813  while ('\0' != *pos)
814  {
815  if ('"' == *pos)
816  {
817  if (1 == quote_on)
818  quote_on = 0;
819  else
820  quote_on = 1;
821  }
822  if ((' ' == *pos) && (0 == quote_on))
823  {
824  *pos = '\0';
825  if (NULL != last)
826  argv[argv_size++] = GNUNET_strdup (last);
827  last = NULL;
828  pos++;
829  while (' ' == *pos)
830  pos++;
831  }
832  if ((NULL == last) && ('\0' != *pos)) // FIXME: == or !=?
833  last = pos;
834  if ('\0' != *pos)
835  pos++;
836  }
837  if (NULL != last)
838  argv[argv_size++] = GNUNET_strdup (last);
839  last = NULL;
840  GNUNET_free (cp);
841  }
842  while (NULL != (arg = (va_arg (ap, const char *))));
843  va_end (ap);
844  argv[argv_size] = NULL;
845 
846  for (i = 0; i < argv_size; i++)
847  {
848  len = strlen (argv[i]);
849  if ((argv[i][0] == '"') && (argv[i][len - 1] == '"'))
850  {
851  memmove (&argv[i][0], &argv[i][1], len - 2);
852  argv[i][len - 2] = '\0';
853  }
854  }
855  binary_path = argv[0];
856  proc = GNUNET_OS_start_process_v (std_inheritance,
857  lsocks,
858  binary_path,
859  argv);
860  while (argv_size > 0)
861  GNUNET_free_nz (argv[--argv_size]);
862  GNUNET_free (argv);
863  return proc;
864 }
struct GNUNET_OS_Process * GNUNET_OS_start_process_v(enum GNUNET_OS_InheritStdioFlags std_inheritance, const int *lsocks, const char *filename, char *const argv[])
Start a process.
Definition: os_priority.c:714
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
static char * filename
#define GNUNET_free_nz(ptr)
Wrapper around free.
#define GNUNET_malloc(size)
Wrapper around malloc.
#define GNUNET_free(ptr)
Wrapper around free.
uint16_t len
length of data (which is always a uint32_t, but presumably this can be used to specify that fewer byt...
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◆ GNUNET_OS_command_stop()

void GNUNET_OS_command_stop ( struct GNUNET_OS_CommandHandle cmd)

Stop/kill a command.

Parameters
cmdhandle to the process

Must ONLY be called either from the callback after 'NULL' was passed for 'line' OR from an independent task (not within the line processor).

Parameters
cmdhandle to the process

Definition at line 1059 of file os_priority.c.

References GNUNET_OS_CommandHandle::eip, GNUNET_assert, GNUNET_break, GNUNET_DISK_pipe_close(), GNUNET_free, GNUNET_OK, GNUNET_OS_process_destroy(), GNUNET_OS_process_kill(), GNUNET_OS_process_wait(), GNUNET_SCHEDULER_cancel(), GNUNET_OS_CommandHandle::opipe, GNUNET_OS_CommandHandle::proc, and GNUNET_OS_CommandHandle::rtask.

Referenced by do_refresh(), GNUNET_NAT_mini_map_stop(), process_map_output(), process_refresh_output(), and process_unmap_output().

1060 {
1061  if (NULL != cmd->proc)
1062  {
1063  GNUNET_assert (NULL != cmd->rtask);
1065  }
1066  (void) GNUNET_OS_process_kill (cmd->eip, SIGKILL);
1070  GNUNET_free (cmd);
1071 }
void GNUNET_OS_process_destroy(struct GNUNET_OS_Process *proc)
Cleans up process structure contents (OS-dependent) and deallocates it.
Definition: os_priority.c:287
struct GNUNET_DISK_PipeHandle * opipe
Handle to the output pipe.
Definition: os_priority.c:1012
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
struct GNUNET_OS_Process * eip
Process handle.
Definition: os_priority.c:1007
struct GNUNET_SCHEDULER_Task * rtask
Task reading from pipe.
Definition: os_priority.c:1037
int GNUNET_DISK_pipe_close(struct GNUNET_DISK_PipeHandle *p)
Closes an interprocess channel.
Definition: disk.c:1634
int GNUNET_OS_process_wait(struct GNUNET_OS_Process *proc)
Wait for a process to terminate.
Definition: os_priority.c:983
GNUNET_OS_LineProcessor proc
Function to call on each line of output.
Definition: os_priority.c:1022
#define GNUNET_free(ptr)
Wrapper around free.
int GNUNET_OS_process_kill(struct GNUNET_OS_Process *proc, int sig)
Sends a signal to the process.
Definition: os_priority.c:225
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
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◆ GNUNET_OS_command_run()

struct GNUNET_OS_CommandHandle* GNUNET_OS_command_run ( GNUNET_OS_LineProcessor  proc,
void *  proc_cls,
struct GNUNET_TIME_Relative  timeout,
const char *  binary,
  ... 
)

Run the given command line and call the given function for each line of the output.

Parameters
procfunction to call for each line of the output
proc_clsclosure for proc
timeoutwhen to time out
binarycommand to run
...arguments to command
Returns
NULL on error
Parameters
procfunction to call for each line of the output
proc_clsclosure for proc
timeoutwhen to time out
binarycommand to run
...arguments to command
Returns
NULL on error

Definition at line 1144 of file os_priority.c.

References cmd_read(), GNUNET_OS_CommandHandle::eip, GNUNET_DISK_PF_BLOCKING_RW, GNUNET_DISK_pipe(), GNUNET_DISK_pipe_close(), GNUNET_DISK_pipe_close_end(), GNUNET_DISK_PIPE_END_READ, GNUNET_DISK_PIPE_END_WRITE, GNUNET_DISK_pipe_handle(), GNUNET_new, GNUNET_OS_INHERIT_STD_NONE, GNUNET_OS_start_process_va(), GNUNET_SCHEDULER_add_read_file(), GNUNET_TIME_relative_to_absolute(), GNUNET_OS_CommandHandle::opipe, GNUNET_OS_CommandHandle::proc, GNUNET_OS_CommandHandle::proc_cls, GNUNET_OS_CommandHandle::r, GNUNET_OS_CommandHandle::rtask, and GNUNET_OS_CommandHandle::timeout.

Referenced by do_refresh(), GNUNET_NAT_mini_map_stop(), and run_upnpc_r().

1149 {
1150  struct GNUNET_OS_CommandHandle *cmd;
1151  struct GNUNET_OS_Process *eip;
1152  struct GNUNET_DISK_PipeHandle *opipe;
1153  va_list ap;
1154 
1156  if (NULL == opipe)
1157  return NULL;
1158  va_start (ap, binary);
1159  /* redirect stdout, don't inherit stderr/stdin */
1160  eip =
1162  NULL,
1163  opipe,
1164  NULL,
1165  binary,
1166  ap);
1167  va_end (ap);
1168  if (NULL == eip)
1169  {
1170  GNUNET_DISK_pipe_close (opipe);
1171  return NULL;
1172  }
1174  cmd = GNUNET_new (struct GNUNET_OS_CommandHandle);
1175  cmd->timeout = GNUNET_TIME_relative_to_absolute (timeout);
1176  cmd->eip = eip;
1177  cmd->opipe = opipe;
1178  cmd->proc = proc;
1179  cmd->proc_cls = proc_cls;
1181  cmd->rtask = GNUNET_SCHEDULER_add_read_file (timeout, cmd->r, &cmd_read, cmd);
1182  return cmd;
1183 }
const struct GNUNET_DISK_FileHandle * r
Read-end of output pipe.
Definition: os_priority.c:1017
struct GNUNET_TIME_Absolute GNUNET_TIME_relative_to_absolute(struct GNUNET_TIME_Relative rel)
Convert relative time to an absolute time in the future.
Definition: time.c:246
struct GNUNET_DISK_PipeHandle * opipe
Handle to the output pipe.
Definition: os_priority.c:1012
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_file(struct GNUNET_TIME_Relative delay, const struct GNUNET_DISK_FileHandle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1667
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_TIME_Absolute timeout
When to time out.
Definition: os_priority.c:1042
void * proc_cls
Closure for proc.
Definition: os_priority.c:1027
const struct GNUNET_DISK_FileHandle * GNUNET_DISK_pipe_handle(const struct GNUNET_DISK_PipeHandle *p, enum GNUNET_DISK_PipeEnd n)
Get the handle to a particular pipe end.
Definition: disk.c:1672
struct GNUNET_OS_Process * eip
Process handle.
Definition: os_priority.c:1007
static void cmd_read(void *cls)
Read from the process and call the line processor.
Definition: os_priority.c:1080
No standard streams should be inherited.
Definition: gnunet_os_lib.h:73
The writing-end of a pipe.
The reading-end of a pipe.
struct GNUNET_DISK_PipeHandle * GNUNET_DISK_pipe(enum GNUNET_DISK_PipeFlags pf)
Creates an interprocess channel.
Definition: disk.c:1456
struct GNUNET_OS_Process * GNUNET_OS_start_process_va(enum GNUNET_OS_InheritStdioFlags std_inheritance, struct GNUNET_DISK_PipeHandle *pipe_stdin, struct GNUNET_DISK_PipeHandle *pipe_stdout, struct GNUNET_DISK_PipeHandle *pipe_stderr, const char *filename, va_list va)
Start a process.
Definition: os_priority.c:633
struct GNUNET_SCHEDULER_Task * rtask
Task reading from pipe.
Definition: os_priority.c:1037
int GNUNET_DISK_pipe_close(struct GNUNET_DISK_PipeHandle *p)
Closes an interprocess channel.
Definition: disk.c:1634
int GNUNET_DISK_pipe_close_end(struct GNUNET_DISK_PipeHandle *p, enum GNUNET_DISK_PipeEnd end)
Closes one half of an interprocess channel.
Definition: disk.c:1562
Handle to a command.
Definition: os_priority.c:1002
Configure both pipe ends for blocking operations if set.
GNUNET_OS_LineProcessor proc
Function to call on each line of output.
Definition: os_priority.c:1022
Handle used to manage a pipe.
Definition: disk.c:68
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◆ GNUNET_OS_process_status()

int GNUNET_OS_process_status ( struct GNUNET_OS_Process proc,
enum GNUNET_OS_ProcessStatusType type,
unsigned long *  code 
)

Retrieve the status of a process.

Nonblocking version.

Parameters
procpointer to process structure
typestatus type
codereturn code/signal number
Returns
GNUNET_OK on success, GNUNET_NO if the process is still running, GNUNET_SYSERR otherwise

Nonblocking version.

Parameters
procprocess ID
typestatus type
codereturn code/signal number
Returns
GNUNET_OK on success, GNUNET_NO if the process is still running, GNUNET_SYSERR otherwise

Definition at line 946 of file os_priority.c.

References process_status().

Referenced by child_death_task(), habitability_check(), main(), maint_child_death(), and run_process_and_wait().

949 {
950  return process_status (proc, type, code, WNOHANG);
951 }
static int process_status(struct GNUNET_OS_Process *proc, enum GNUNET_OS_ProcessStatusType *type, unsigned long *code, int options)
Retrieve the status of a process, waiting on it if dead.
Definition: os_priority.c:878
enum GNUNET_TESTBED_UnderlayLinkModelType type
the type of this model
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◆ GNUNET_OS_process_wait()

int GNUNET_OS_process_wait ( struct GNUNET_OS_Process proc)

Wait for a process to terminate.

The return code is discarded. You must not use GNUNET_OS_process_status() on the same process after calling this function! This function is blocking and should thus only be used if the child process is known to have terminated or to terminate very soon.

Parameters
procpointer to process structure of the process to wait for
Returns
GNUNET_OK on success, GNUNET_SYSERR otherwise

The return code is discarded. You must not use GNUNET_OS_process_status() on the same process after calling this function! This function is blocking and should thus only be used if the child process is known to have terminated or to terminate very soon.

Parameters
procpointer to process structure
Returns
GNUNET_OK on success, GNUNET_SYSERR otherwise

Definition at line 983 of file os_priority.c.

References GNUNET_ERROR_TYPE_WARNING, GNUNET_OK, GNUNET_SYSERR, LOG_STRERROR, GNUNET_OS_Process::pid, and ret.

Referenced by GN_request_connection_reversal(), GN_stop_gnunet_nat_server_(), GNUNET_HELPER_wait(), GNUNET_NAT_mini_get_external_ipv4_cancel_(), GNUNET_OS_command_stop(), GNUNET_TESTBED_is_host_habitable_cancel(), GNUNET_TESTING_peer_wait(), nat_server_read(), run_process_and_wait(), server_log(), shutdown_task(), and stop_shared_service_instance().

984 {
985  pid_t pid = proc->pid;
986  pid_t ret;
987 
988  while ((pid != (ret = waitpid (pid, NULL, 0))) && (EINTR == errno))
989  ;
990  if (pid != ret)
991  {
993  return GNUNET_SYSERR;
994  }
995  return GNUNET_OK;
996 }
#define LOG_STRERROR(kind, syscall)
Definition: os_priority.c:34
pid_t pid
PID of the process.
Definition: os_priority.c:48
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
static struct GNUNET_PeerIdentity pid
Identity of the peer we transmit to / connect to.
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◆ GNUNET_OS_process_wait_status()

int GNUNET_OS_process_wait_status ( struct GNUNET_OS_Process proc,
enum GNUNET_OS_ProcessStatusType type,
unsigned long *  code 
)

Retrieve the status of a process, waiting on it if dead.

Blocking version.

Parameters
procpointer to process structure
typestatus type
codereturn code/signal number
Returns
GNUNET_OK on success, GNUNET_NO if the process is still running, GNUNET_SYSERR otherwise

Blocking version.

Parameters
procpointer to process structure
typestatus type
codereturn code/signal number
Returns
GNUNET_OK on success, GNUNET_SYSERR otherwise

Definition at line 964 of file os_priority.c.

References process_status().

Referenced by apply_patch().

967 {
968  return process_status (proc, type, code, 0);
969 }
static int process_status(struct GNUNET_OS_Process *proc, enum GNUNET_OS_ProcessStatusType *type, unsigned long *code, int options)
Retrieve the status of a process, waiting on it if dead.
Definition: os_priority.c:878
enum GNUNET_TESTBED_UnderlayLinkModelType type
the type of this model
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◆ GNUNET_OS_install_parent_control_handler()

void GNUNET_OS_install_parent_control_handler ( void *  cls)

Connects this process to its parent via pipe; essentially, the parent control handler will read signal numbers from the GNUNET_OS_CONTROL_PIPE (as given in an environment variable) and raise those signals.

Parameters
clsclosure (unused)

Connects this process to its parent via pipe; essentially, the parent control handler will read signal numbers from the GNUNET_OS_CONTROL_PIPE (as given in an environment variable) and raise those signals.

Parameters
clsclosure (unused)

Definition at line 141 of file os_priority.c.

References GNUNET_OS_Process::control_pipe, getenv(), GNUNET_break, GNUNET_DISK_get_handle_from_int_fd(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_WARNING, GNUNET_OS_CONTROL_PIPE, GNUNET_SCHEDULER_add_read_file(), GNUNET_SCHEDULER_add_shutdown(), GNUNET_TIME_UNIT_FOREVER_REL, LOG, LOG_STRERROR_FILE, parent_control_handler(), and shutdown_pch().

Referenced by install_parent_control_handler().

142 {
143  const char *env_buf;
144  char *env_buf_end;
145  struct GNUNET_DISK_FileHandle *control_pipe;
146  uint64_t pipe_fd;
147 
148  (void) cls;
149  if (NULL != pch)
150  {
151  /* already done, we've been called twice... */
152  GNUNET_break (0);
153  return;
154  }
155  env_buf = getenv (GNUNET_OS_CONTROL_PIPE);
156  if ((NULL == env_buf) || (strlen (env_buf) <= 0))
157  {
159  "Not installing a handler because $%s is empty\n",
161  putenv (GNUNET_OS_CONTROL_PIPE "=");
162  return;
163  }
164  errno = 0;
165  pipe_fd = strtoull (env_buf, &env_buf_end, 16);
166  if ((0 != errno) || (env_buf == env_buf_end))
167  {
168  LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "strtoull", env_buf);
169  putenv (GNUNET_OS_CONTROL_PIPE "=");
170  return;
171  }
172  if (pipe_fd >= FD_SETSIZE)
173  {
175  "GNUNET_OS_CONTROL_PIPE `%s' contains garbage?\n",
176  env_buf);
177  putenv (GNUNET_OS_CONTROL_PIPE "=");
178  return;
179  }
180 
181  control_pipe = GNUNET_DISK_get_handle_from_int_fd ((int) pipe_fd);
182 
183  if (NULL == control_pipe)
184  {
185  LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "open", env_buf);
186  putenv (GNUNET_OS_CONTROL_PIPE "=");
187  return;
188  }
190  "Adding parent control handler pipe `%s' to the scheduler\n",
191  env_buf);
193  control_pipe,
195  control_pipe);
197  putenv (GNUNET_OS_CONTROL_PIPE "=");
198 }
#define GNUNET_OS_CONTROL_PIPE
Definition: os_priority.c:40
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_shutdown(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run on shutdown, that is when a CTRL-C signal is received, or when GNUNET_SCHEDULER_shutdown() is being invoked.
Definition: scheduler.c:1331
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_file(struct GNUNET_TIME_Relative delay, const struct GNUNET_DISK_FileHandle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1667
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static struct GNUNET_SCHEDULER_Task * spch
Handle for the shutdown_pch() Task.
Definition: os_priority.c:72
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
char * getenv()
#define LOG_STRERROR_FILE(kind, syscall, filename)
Definition: os_priority.c:37
static struct GNUNET_SCHEDULER_Task * pch
Handle for the parent_control_handler() Task.
Definition: os_priority.c:67
struct GNUNET_DISK_FileHandle * GNUNET_DISK_get_handle_from_int_fd(int fno)
Get a handle from a native integer FD.
Definition: disk.c:1310
static void shutdown_pch(void *cls)
This handler is called on shutdown to remove the pch.
Definition: os_priority.c:81
static void parent_control_handler(void *cls)
This handler is called when there are control data to be read on the pipe.
Definition: os_priority.c:98
Handle used to access files (and pipes).
#define LOG(kind,...)
Definition: os_priority.c:32
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◆ GNUNET_OS_check_helper_binary()

int GNUNET_OS_check_helper_binary ( const char *  binary,
int  check_suid,
const char *  params 
)

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.

Parameters
binarythe name of the file to check. W32: must not have an .exe suffix.
check_suidinput true if the binary should be checked for SUID (*nix) W32: checks if the program has sufficient privileges by executing this binary with the -d flag. -d omits a programs main loop and only executes all privileged operations in an binary.
paramsparameters used for w32 privilege checking (can be NULL for != w32, or when not checking for suid/permissions )
Returns
GNUNET_YES if the file is SUID (*nix) or can be executed with current privileges (W32), GNUNET_NO if not SUID (but binary exists), GNUNET_SYSERR on error (no such binary or not executable)

Attempts to find the file using the current PATH environment variable as a search path.

Parameters
binarythe name of the file to check. W32: must not have an .exe suffix.
check_suidinput true if the binary should be checked for SUID (*nix) W32: checks if the program has sufficient privileges by executing this binary with the -d flag. -d omits a programs main loop and only executes all privileged operations in an binary.
paramsparameters used for w32 privilege checking (can be NULL for != w32 )
Returns
GNUNET_YES if the file is SUID (*nix) or can be executed with current privileges (W32), GNUNET_NO if not SUID (but binary exists), GNUNET_SYSERR on error (no such binary or not executable)

Definition at line 764 of file os_installation.c.

References _, get_path_from_PATH(), GNUNET_asprintf(), GNUNET_ERROR_TYPE_INFO, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_log, GNUNET_NO, GNUNET_strdup, GNUNET_STRINGS_path_is_absolute(), GNUNET_SYSERR, GNUNET_YES, LOG, LOG_STRERROR_FILE, and p.

Referenced by GNUNET_NAT_mini_get_external_ipv4_(), GNUNET_NAT_mini_map_start(), handle_autoconfig_request(), LIBGNUNET_PLUGIN_TRANSPORT_INIT(), restart_nat_server(), run(), start_process(), test_icmp_client(), test_icmp_server(), and test_upnpc().

767 {
768  struct stat statbuf;
769  char *p;
770  char *pf;
771 
772  if ((GNUNET_YES ==
773  GNUNET_STRINGS_path_is_absolute (binary, GNUNET_NO, NULL, NULL)) ||
774  (0 == strncmp (binary, "./", 2)))
775  {
776  p = GNUNET_strdup (binary);
777  }
778  else
779  {
780  p = get_path_from_PATH (binary);
781  if (NULL != p)
782  {
783  GNUNET_asprintf (&pf, "%s/%s", p, binary);
784  GNUNET_free (p);
785  p = pf;
786  }
787  }
788 
789  if (NULL == p)
790  {
792  _ ("Could not find binary `%s' in PATH!\n"),
793  binary);
794  return GNUNET_SYSERR;
795  }
796  if (0 != access (p, X_OK))
797  {
799  GNUNET_free (p);
800  return GNUNET_SYSERR;
801  }
802 
803  if (0 == getuid ())
804  {
805  /* as we run as root, we don't insist on SUID */
806  GNUNET_free (p);
807  return GNUNET_YES;
808  }
809 
810  if (0 != stat (p, &statbuf))
811  {
813  GNUNET_free (p);
814  return GNUNET_SYSERR;
815  }
816  if (check_suid)
817  {
818  (void) params;
819  if ((0 != (statbuf.st_mode & S_ISUID)) && (0 == statbuf.st_uid))
820  {
821  GNUNET_free (p);
822  return GNUNET_YES;
823  }
825  _ ("Binary `%s' exists, but is not SUID\n"),
826  p);
827  /* binary exists, but not SUID */
828  }
829  GNUNET_free (p);
830  return GNUNET_NO;
831 }
int GNUNET_STRINGS_path_is_absolute(const char *filename, int can_be_uri, int *r_is_uri, char **r_uri_scheme)
Check whether filename is absolute or not, and if it&#39;s an URI.
Definition: strings.c:1129
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
#define _(String)
GNU gettext support macro.
Definition: platform.h:184
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
#define LOG(kind,...)
static struct GNUNET_OS_Process * p
Helper process we started.
Definition: gnunet-qr.c:59
#define LOG_STRERROR_FILE(kind, syscall, filename)
static char * get_path_from_PATH(const char *binary)
Return the actual path to a file found in the current PATH environment variable.
#define GNUNET_log(kind,...)
#define GNUNET_free(ptr)
Wrapper around free.
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