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
Whether 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
Whether 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 450 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().

451 {
452  size_t n;
453  char *dirname;
454  char *execpath = NULL;
455  char *tmp;
456  char *multiarch;
457  char *libdir;
458  int isbasedir;
459 
460  /* if wanted, try to get the current app's bin/ */
461  if (dirkind == GNUNET_OS_IPK_SELF_PREFIX)
462  execpath = os_get_exec_path ();
463 
464  /* try to get GNUnet's bin/ or lib/, or if previous was unsuccessful some
465  * guess for the current app */
466  if (NULL == execpath)
467  execpath = os_get_gnunet_path ();
468  if (NULL == execpath)
469  return NULL;
470 
471  n = strlen (execpath);
472  if (0 == n)
473  {
474  /* should never happen, but better safe than sorry */
475  GNUNET_free (execpath);
476  return NULL;
477  }
478  /* remove filename itself */
479  while ((n > 1) && (DIR_SEPARATOR == execpath[n - 1]))
480  execpath[--n] = '\0';
481 
482  isbasedir = 1;
483  if ((n > 6) && ((0 == strcasecmp (&execpath[n - 6], "/lib32")) ||
484  (0 == strcasecmp (&execpath[n - 6], "/lib64"))))
485  {
486  if ((GNUNET_OS_IPK_LIBDIR != dirkind) &&
487  (GNUNET_OS_IPK_LIBEXECDIR != dirkind))
488  {
489  /* strip '/lib32' or '/lib64' */
490  execpath[n - 6] = '\0';
491  n -= 6;
492  }
493  else
494  isbasedir = 0;
495  }
496  else if ((n > 4) && ((0 == strcasecmp (&execpath[n - 4], "/bin")) ||
497  (0 == strcasecmp (&execpath[n - 4], "/lib"))))
498  {
499  /* strip '/bin' or '/lib' */
500  execpath[n - 4] = '\0';
501  n -= 4;
502  }
503  multiarch = NULL;
504  if (NULL != (libdir = strstr (execpath, "/lib/")))
505  {
506  /* test for multi-arch path of the form "PREFIX/lib/MULTIARCH/";
507  here we need to re-add 'multiarch' to lib and libexec paths later! */
508  multiarch = &libdir[5];
509  if (NULL == strchr (multiarch, '/'))
510  libdir[0] =
511  '\0'; /* Debian multiarch format, cut of from 'execpath' but preserve in multicarch */
512  else
513  multiarch =
514  NULL; /* maybe not, multiarch still has a '/', which is not OK */
515  }
516  /* in case this was a directory named foo-bin, remove "foo-" */
517  while ((n > 1) && (execpath[n - 1] == DIR_SEPARATOR))
518  execpath[--n] = '\0';
519  switch (dirkind)
520  {
523  dirname = GNUNET_strdup (DIR_SEPARATOR_STR);
524  break;
525 
528  break;
529 
531  if (isbasedir)
532  {
533  GNUNET_asprintf (&tmp,
534  "%s%s%s%s%s%s%s",
535  execpath,
536  DIR_SEPARATOR_STR "lib",
537  (NULL != multiarch) ? DIR_SEPARATOR_STR : "",
538  (NULL != multiarch) ? multiarch : "",
539  DIR_SEPARATOR_STR,
541  DIR_SEPARATOR_STR);
543  {
544  GNUNET_free (execpath);
545  return tmp;
546  }
547  GNUNET_free (tmp);
548  tmp = NULL;
549  dirname = NULL;
550  if (4 == sizeof(void *))
551  {
552  GNUNET_asprintf (&dirname,
553  DIR_SEPARATOR_STR "lib32" DIR_SEPARATOR_STR
554  "%s" DIR_SEPARATOR_STR,
556  GNUNET_asprintf (&tmp, "%s%s", execpath, dirname);
557  }
558  if (8 == sizeof(void *))
559  {
560  GNUNET_asprintf (&dirname,
561  DIR_SEPARATOR_STR "lib64" DIR_SEPARATOR_STR
562  "%s" DIR_SEPARATOR_STR,
564  GNUNET_asprintf (&tmp, "%s%s", execpath, dirname);
565  }
566 
567  if ((NULL != tmp) &&
569  {
570  GNUNET_free (execpath);
571  GNUNET_free (dirname);
572  return tmp;
573  }
574  GNUNET_free (tmp);
575  GNUNET_free (dirname);
576  }
577  GNUNET_asprintf (&dirname,
578  DIR_SEPARATOR_STR "%s" DIR_SEPARATOR_STR,
580  break;
581 
583  GNUNET_asprintf (&dirname,
584  DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR
585  "%s" DIR_SEPARATOR_STR,
587  break;
588 
590  dirname = GNUNET_strdup (DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR
591  "locale" DIR_SEPARATOR_STR);
592  break;
593 
595  dirname = GNUNET_strdup (DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR
596  "icons" DIR_SEPARATOR_STR);
597  break;
598 
600  GNUNET_asprintf (&dirname,
601  DIR_SEPARATOR_STR "share" DIR_SEPARATOR_STR
602  "doc" DIR_SEPARATOR_STR
603  "%s" DIR_SEPARATOR_STR,
605  break;
606 
608  if (isbasedir)
609  {
610  GNUNET_asprintf (&dirname,
611  DIR_SEPARATOR_STR "%s" DIR_SEPARATOR_STR
612  "libexec" DIR_SEPARATOR_STR,
614  GNUNET_asprintf (&tmp,
615  "%s%s%s%s",
616  execpath,
617  DIR_SEPARATOR_STR "lib" DIR_SEPARATOR_STR,
618  (NULL != multiarch) ? multiarch : "",
619  dirname);
620  GNUNET_free (dirname);
622  {
623  GNUNET_free (execpath);
624  return tmp;
625  }
626  GNUNET_free (tmp);
627  tmp = NULL;
628  dirname = NULL;
629  if (4 == sizeof(void *))
630  {
631  GNUNET_asprintf (&dirname,
632  DIR_SEPARATOR_STR "lib32" DIR_SEPARATOR_STR
633  "%s" DIR_SEPARATOR_STR
634  "libexec" DIR_SEPARATOR_STR,
636  GNUNET_asprintf (&tmp, "%s%s", execpath, dirname);
637  }
638  if (8 == sizeof(void *))
639  {
640  GNUNET_asprintf (&dirname,
641  DIR_SEPARATOR_STR "lib64" DIR_SEPARATOR_STR
642  "%s" DIR_SEPARATOR_STR
643  "libexec" DIR_SEPARATOR_STR,
645  GNUNET_asprintf (&tmp, "%s%s", execpath, dirname);
646  }
647  if ((NULL != tmp) &&
649  {
650  GNUNET_free (execpath);
651  GNUNET_free (dirname);
652  return tmp;
653  }
654  GNUNET_free (tmp);
655  GNUNET_free (dirname);
656  }
657  GNUNET_asprintf (&dirname,
658  DIR_SEPARATOR_STR "%s" DIR_SEPARATOR_STR
659  "libexec" DIR_SEPARATOR_STR,
661  break;
662 
663  default:
664  GNUNET_free (execpath);
665  return NULL;
666  }
667  GNUNET_asprintf (&tmp, "%s%s", execpath, dirname);
668  GNUNET_free (dirname);
669  GNUNET_free (execpath);
670  return tmp;
671 }
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".
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
Return the "PREFIX" directory given to configure.
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/)
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
#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.
static char * os_get_gnunet_path(void)
get the path to GNUnet bin/ or lib/, preferring the lib/ path
Return the prefix of the path with application icons (share/icons/).
enum GNUNET_GenericReturnValue GNUNET_DISK_directory_test(const char *fil, int is_readable)
Test if fil is a directory and listable.
Definition: disk.c:404
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 683 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(), statistics_start(), test_icmp_client(), test_icmp_server(), and tokenizer_cb().

684 {
685  static char *cache;
686  char *libexecdir;
687  char *binary;
688 
689  if ((DIR_SEPARATOR == progname[0]) ||
690  (GNUNET_YES ==
691  GNUNET_STRINGS_path_is_absolute (progname, GNUNET_NO, NULL, NULL)))
692  return GNUNET_strdup (progname);
693  if (NULL != cache)
694  libexecdir = cache;
695  else
697  if (NULL == libexecdir)
698  return GNUNET_strdup (progname);
699  GNUNET_asprintf (&binary, "%s%s", libexecdir, progname);
700  cache = libexecdir;
701  return binary;
702 }
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:1130
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
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/)
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
#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 718 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().

720 {
721  static char *cache;
722  char *binary = NULL;
723  char *path = NULL;
724  size_t path_len;
725 
726  if (GNUNET_YES ==
727  GNUNET_STRINGS_path_is_absolute (progname, GNUNET_NO, NULL, NULL))
728  {
729  return GNUNET_strdup (progname);
730  }
731  if (NULL != cache)
732  path = cache;
733  else
735  "PATHS",
736  "SUID_BINARY_PATH",
737  &path);
738  if ((NULL == path) || (0 == strlen (path)))
739  return GNUNET_OS_get_libexec_binary_path (progname);
740  path_len = strlen (path);
741  GNUNET_asprintf (&binary,
742  "%s%s%s",
743  path,
744  (path[path_len - 1] == DIR_SEPARATOR) ? ""
746  progname);
747  cache = path;
748  return binary;
749 }
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:1130
enum GNUNET_GenericReturnValue 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 GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
#define DIR_SEPARATOR_STR
Definition: platform.h:171
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
#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:666
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 }
enum GNUNET_GenericReturnValue GNUNET_DISK_file_close(struct GNUNET_DISK_FileHandle *h)
Close an open file.
Definition: disk.c:1126
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(), statistics_start(), 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
enum GNUNET_GenericReturnValue GNUNET_DISK_pipe_close(struct GNUNET_DISK_PipeHandle *p)
Closes an interprocess channel.
Definition: disk.c:1405
struct GNUNET_SCHEDULER_Task * rtask
Task reading from pipe.
Definition: os_priority.c:1037
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:1436
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
enum GNUNET_GenericReturnValue GNUNET_DISK_pipe_close(struct GNUNET_DISK_PipeHandle *p)
Closes an interprocess channel.
Definition: disk.c:1405
enum GNUNET_GenericReturnValue 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:1352
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:1262
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
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:1148
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 769 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().

772 {
773  struct stat statbuf;
774  char *p;
775  char *pf;
776 
777  if ((GNUNET_YES ==
778  GNUNET_STRINGS_path_is_absolute (binary, GNUNET_NO, NULL, NULL)) ||
779  (0 == strncmp (binary, "./", 2)))
780  {
781  p = GNUNET_strdup (binary);
782  }
783  else
784  {
785  p = get_path_from_PATH (binary);
786  if (NULL != p)
787  {
788  GNUNET_asprintf (&pf, "%s/%s", p, binary);
789  GNUNET_free (p);
790  p = pf;
791  }
792  }
793 
794  if (NULL == p)
795  {
797  _ ("Could not find binary `%s' in PATH!\n"),
798  binary);
799  return GNUNET_SYSERR;
800  }
801  if (0 != access (p, X_OK))
802  {
804  GNUNET_free (p);
805  return GNUNET_SYSERR;
806  }
807 
808  if (0 == getuid ())
809  {
810  /* as we run as root, we don't insist on SUID */
811  GNUNET_free (p);
812  return GNUNET_YES;
813  }
814 
815  if (0 != stat (p, &statbuf))
816  {
818  GNUNET_free (p);
819  return GNUNET_SYSERR;
820  }
821  if (check_suid)
822  {
823  (void) params;
824  if ((0 != (statbuf.st_mode & S_ISUID)) && (0 == statbuf.st_uid))
825  {
826  GNUNET_free (p);
827  return GNUNET_YES;
828  }
830  _ ("Binary `%s' exists, but is not SUID\n"),
831  p);
832  /* binary exists, but not SUID */
833  }
834  GNUNET_free (p);
835  return GNUNET_NO;
836 }
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:1130
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
#define _(String)
GNU gettext support macro.
Definition: platform.h:184
#define LOG(kind,...)
static struct GNUNET_OS_Process * p
Helper process we started.
Definition: gnunet-qr.c:59
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
#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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