configuration.c File Reference

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_configuration_lib.h"

Include dependency graph for configuration.c:

Go to the source code of this file.

Data Structures
struct	ConfigEntry
	configuration entry More...
struct	ConfigSection
	configuration section More...
struct	ConfigFile
struct	GNUNET_CONFIGURATION_Handle
	configuration data More...
struct	DiffHandle
	Used for diffing a configuration object against the default one. More...
struct	CollectFilesContext
	Closure to collect_files_cb. More...

Macros
#define	LOG(kind, ...)   GNUNET_log_from (kind, "util", __VA_ARGS__)
#define	LOG_STRERROR_FILE(kind, syscall, filename)    GNUNET_log_from_strerror_file (kind, "util", syscall, filename)

Functions
void	GNUNET_CONFIGURATION_enable_diagnostics (struct GNUNET_CONFIGURATION_Handle *cfg)
	Enable extra diagnostics. More...
struct GNUNET_CONFIGURATION_Handle *	GNUNET_CONFIGURATION_create (const struct GNUNET_OS_ProjectData *pd)
	Create a new configuration object. More...
void	GNUNET_CONFIGURATION_destroy (struct GNUNET_CONFIGURATION_Handle *cfg)
	Destroy configuration object. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_parse_and_run (const struct GNUNET_OS_ProjectData *pd, const char *filename, GNUNET_CONFIGURATION_Callback cb, void *cb_cls)
	Parse a configuration file filename and run the function cb with the resulting configuration object. More...
static enum GNUNET_GenericReturnValue	collect_files_cb (void *cls, const char *filename)
	Function called with a filename. More...
static struct ConfigSection *	find_section (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section)
	Find a section entry from a configuration. More...
static int	pstrcmp (const void *a, const void *b)
static enum GNUNET_GenericReturnValue	handle_inline (struct GNUNET_CONFIGURATION_Handle *cfg, const char *path_or_glob, bool path_is_glob, const char *restrict_section, const char *source_filename, unsigned int source_lineno)
	Handle an inline directive. More...
static struct ConfigEntry *	find_entry (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *key)
	Find an entry from a configuration. More...
static void	set_entry_hint (struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, const char *hint_filename, unsigned int hint_line)
	Set a configuration hint. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_deserialize (struct GNUNET_CONFIGURATION_Handle *cfg, const char *mem, size_t size, const char *source_filename)
	De-serializes configuration. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_parse (struct GNUNET_CONFIGURATION_Handle *cfg, const char *filename)
	Parse a configuration file, add all of the options in the file to the configuration environment. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_is_dirty (const struct GNUNET_CONFIGURATION_Handle *cfg)
	Test if there are configuration options that were changed since the last save. More...
static bool	do_skip (const char *sec, const char *key)
	Should we skip this configuration entry when serializing? More...
char *	GNUNET_CONFIGURATION_serialize (const struct GNUNET_CONFIGURATION_Handle *cfg, size_t *size)
	Serializes the given configuration. More...
static void	dump_os_ipk (const struct GNUNET_CONFIGURATION_Handle *cfg, struct GNUNET_Buffer *buf, enum GNUNET_OS_InstallationPathKind ipk)
	Dump an os installation path to a buffer. More...
char *	GNUNET_CONFIGURATION_serialize_diagnostics (const struct GNUNET_CONFIGURATION_Handle *cfg)
	Serializes the given configuration with diagnostics information. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_write (struct GNUNET_CONFIGURATION_Handle *cfg, const char *filename)
	Write configuration file. More...
void	GNUNET_CONFIGURATION_iterate (const struct GNUNET_CONFIGURATION_Handle *cfg, GNUNET_CONFIGURATION_Iterator iter, void *iter_cls)
	Iterate over all options in the configuration. More...
void	GNUNET_CONFIGURATION_iterate_section_values (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, GNUNET_CONFIGURATION_Iterator iter, void *iter_cls)
	Iterate over values of a section in the configuration. More...
void	GNUNET_CONFIGURATION_iterate_sections (const struct GNUNET_CONFIGURATION_Handle *cfg, GNUNET_CONFIGURATION_SectionIterator iter, void *iter_cls)
	Iterate over all sections in the configuration. More...
void	GNUNET_CONFIGURATION_remove_section (struct GNUNET_CONFIGURATION_Handle *cfg, const char *section)
	Remove the given section and all options in it. More...
static void	copy_entry (void *cls, const char *section, const char *option, const char *value)
	Copy a configuration value to the given target configuration. More...
struct GNUNET_CONFIGURATION_Handle *	GNUNET_CONFIGURATION_dup (const struct GNUNET_CONFIGURATION_Handle *cfg)
	Duplicate an existing configuration object. More...
static void	compare_entries (void *cls, const char *section, const char *option, const char *value)
	A callback function, compares entries from two configurations (default against a new configuration) and write the diffs in a diff-configuration object (the callback object). More...
struct GNUNET_CONFIGURATION_Handle *	GNUNET_CONFIGURATION_get_diff (const struct GNUNET_CONFIGURATION_Handle *cfg_default, const struct GNUNET_CONFIGURATION_Handle *cfg_new)
	Compute configuration with only entries that have been changed. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_write_diffs (const struct GNUNET_CONFIGURATION_Handle *cfg_default, const struct GNUNET_CONFIGURATION_Handle *cfg_new, const char *filename)
	Write only configuration entries that have been changed to configuration file. More...
void	GNUNET_CONFIGURATION_set_value_string (struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, const char *value)
	Set a configuration value that should be a string. More...
void	GNUNET_CONFIGURATION_set_value_number (struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long number)
	Set a configuration value that should be a number. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_get_value_number (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long *number)
	Get a configuration value that should be a number. More...
void	GNUNET_CONFIGURATION_set_value_float (struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, float number)
	Set a configuration value that should be a float. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_get_value_float (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, float *number)
	Get a configuration value that should be a floating point number. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_get_value_time (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, struct GNUNET_TIME_Relative *time)
	Get a configuration value that should be a relative time. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_get_value_size (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long *size)
	Get a configuration value that should be a size in bytes. More...
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. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_get_value_choice (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, const char *const *choices, const char **value)
	Get a configuration value that should be in a set of predefined strings. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_get_data (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, void *buf, size_t buf_size)
	Get Crockford32-encoded fixed-size binary data from a configuration. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_have_value (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
	Test if we have a value for a particular option. More...
static char *	expand_dollar (const struct GNUNET_CONFIGURATION_Handle *cfg, char *orig, unsigned int depth)
	Expand an expression of the form "$FOO/BAR" to "DIRECTORY/BAR" where either in the "PATHS" section or the environment "FOO" is set to "DIRECTORY". More...
char *	GNUNET_CONFIGURATION_expand_dollar (const struct GNUNET_CONFIGURATION_Handle *cfg, char *orig)
	Expand an expression of the form "$FOO/BAR" to "DIRECTORY/BAR" where either in the "PATHS" section or the environment "FOO" is set to "DIRECTORY". More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_get_value_filename (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
	Get a configuration value that should be the name of a file or directory. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_get_value_yesno (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
	Get a configuration value that should be in a set of "YES" or "NO". More...
int	GNUNET_CONFIGURATION_iterate_value_filenames (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, GNUNET_FileNameCallback cb, void *cb_cls)
	Iterate over the set of filenames stored in a configuration value. More...
static char *	escape_name (const char *value)
	FIXME. More...
static enum GNUNET_GenericReturnValue	test_match (void *cls, const char *fn)
	FIXME. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_append_value_filename (struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, const char *value)
	Append a filename to a configuration value that represents a list of filenames. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_remove_value_filename (struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, const char *value)
	Remove a filename from a configuration value that represents a list of filenames. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_load_from (struct GNUNET_CONFIGURATION_Handle *cfg, const char *defaults_d)
	Load default configuration. More...
char *	GNUNET_CONFIGURATION_default_filename (const struct GNUNET_OS_ProjectData *pd)
	Return the filename of the default configuration filename that is used when no explicit configuration entry point has been specified. More...
enum GNUNET_GenericReturnValue	GNUNET_CONFIGURATION_load (struct GNUNET_CONFIGURATION_Handle *cfg, const char *filename)
	Load configuration. More...
static void	print_filename_option (void *cls, const char *section, const char *option, const char *value)
	Print each option in a given section as a filename. More...
static void	print_option (void *cls, const char *section, const char *option, const char *value)
	Print each option in a given section. More...
static void	print_section_name (void *cls, const char *section)
	Print out given section name. More...
void	GNUNET_CONFIGURATION_config_tool_run (void *cls, char *const *args, const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
	Main task to run to perform operations typical for gnunet-config as per the configuration settings given in cls. More...
void	GNUNET_CONFIGURATION_config_settings_free (struct GNUNET_CONFIGURATION_ConfigSettings *cs)
	Free resources associated with cs. More...
const struct GNUNET_OS_ProjectData *	GNUNET_CONFIGURATION_get_project_data (const struct GNUNET_CONFIGURATION_Handle *cfg)
	Return the project data associated with this configuration. More...

Macro Definition Documentation

LOG

#define LOG	(		kind,
			...
	)		GNUNET_log_from (kind, "util", __VA_ARGS__)

Definition at line 30 of file configuration.c.

LOG_STRERROR_FILE

#define LOG_STRERROR_FILE	(		kind,
			syscall,
			filename
	)		GNUNET_log_from_strerror_file (kind, "util", syscall, filename)

Definition at line 32 of file configuration.c.

Function Documentation

collect_files_cb()

static enum GNUNET_GenericReturnValue collect_files_cb ( void *  cls, const char *  filename  )

static

Function called with a filename.

Parameters

cls	closure
filename	complete filename (absolute path)

Returns

GNUNET_OK to continue to iterate, GNUNET_NO to stop iteration with no error, GNUNET_SYSERR to abort iteration with error!

Definition at line 394 of file configuration.c.

{
  struct CollectFilesContext *igc = cls;
 
  GNUNET_array_append (igc->files,
                       igc->files_length,
                       GNUNET_strdup (filename));
  return GNUNET_OK;
}

References filename, CollectFilesContext::files, CollectFilesContext::files_length, GNUNET_array_append, GNUNET_OK, and GNUNET_strdup.

Referenced by GNUNET_CONFIGURATION_load_from(), and handle_inline().

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find_section()

static struct ConfigSection * find_section ( const struct GNUNET_CONFIGURATION_Handle *  cfg, const char *  section  )

static

Find a section entry from a configuration.

Parameters

cfg	configuration to search in
section	name of the section to look for

Returns

matching entry, NULL if not found

Definition at line 414 of file configuration.c.

{
  struct ConfigSection *pos;
 
  if (NULL == cfg)
    return NULL;
  pos = cfg->sections;
  while ( (NULL != pos) &&
          (0 != strcasecmp (section,
                            pos->name)) )
    pos = pos->next;
  return pos;
}

References cfg, ConfigSection::name, ConfigSection::next, and GNUNET_CONFIGURATION_Handle::sections.

Referenced by find_entry(), GNUNET_CONFIGURATION_set_value_string(), and handle_inline().

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pstrcmp()

static int pstrcmp ( const void *  a, const void *  b  )

static

Definition at line 431 of file configuration.c.

{
  return strcmp (*((const char **) a),
                 *((const char **) b));
}

Referenced by GNUNET_CONFIGURATION_load_from(), and handle_inline().

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handle_inline()

static enum GNUNET_GenericReturnValue handle_inline ( struct GNUNET_CONFIGURATION_Handle *  cfg, const char *  path_or_glob, bool  path_is_glob, const char *  restrict_section, const char *  source_filename, unsigned int  source_lineno  )

static

Handle an inline directive.

Returns

GNUNET_SYSERR on error, GNUNET_OK otherwise

Definition at line 445 of file configuration.c.

{
  char *inline_path = NULL;
  struct GNUNET_CONFIGURATION_Handle *other_cfg = NULL;
  struct CollectFilesContext igc = {
    .files = NULL,
    .files_length = 0,
  };
  enum GNUNET_GenericReturnValue fun_ret;
  unsigned int old_nest_level = cfg->current_nest_level++;
 
  /* We support the section restriction only for non-globs */
  GNUNET_assert (! (path_is_glob && (NULL != restrict_section)));
 
  if (NULL == source_filename)
  {
    LOG (GNUNET_ERROR_TYPE_DEBUG,
         "Refusing to parse inline configurations, "
         "not allowed without source filename!\n");
    fun_ret = GNUNET_SYSERR;
    goto cleanup;
  }
 
  if ('/' == *path_or_glob)
    inline_path = GNUNET_strdup (path_or_glob);
  else
  {
    /* We compute the canonical, absolute path first,
       so that relative imports resolve properly with symlinked
       config files.  */
    char *source_realpath;
    char *endsep;
 
    source_realpath = realpath (source_filename,
                                NULL);
    if (NULL == source_realpath)
    {
      /* Couldn't even resolve path of base dir. */
      GNUNET_break (0);
      /* failed to parse included config */
      fun_ret = GNUNET_SYSERR;
      goto cleanup;
    }
    endsep = strrchr (source_realpath, '/');
    GNUNET_assert (NULL != endsep);
    *endsep = '\0';
    GNUNET_asprintf (&inline_path,
                     "%s/%s",
                     source_realpath,
                     path_or_glob);
    free (source_realpath);
  }
 
  if (path_is_glob)
  {
    int nret;
 
    LOG (GNUNET_ERROR_TYPE_DEBUG,
         "processing config glob '%s'\n",
         inline_path);
 
    nret = GNUNET_DISK_glob (inline_path,
                             &collect_files_cb,
                             &igc);
    if (-1 == nret)
    {
      fun_ret = GNUNET_SYSERR;
      goto cleanup;
    }
    GNUNET_assert (nret == igc.files_length);
    qsort (igc.files,
           igc.files_length,
           sizeof (char *),
           &pstrcmp);
    for (int i = 0; i < nret; i++)
    {
      if (GNUNET_OK !=
          GNUNET_CONFIGURATION_parse (cfg,
                                      igc.files[i]))
      {
        fun_ret = GNUNET_SYSERR;
        goto cleanup;
      }
    }
    fun_ret = GNUNET_OK;
  }
  else if (NULL != restrict_section)
  {
    enum GNUNET_GenericReturnValue inner_ret;
    struct ConfigSection *cs;
    struct ConfigFile *cf = GNUNET_new (struct ConfigFile);
 
    inner_ret = GNUNET_DISK_file_test_read (inline_path);
 
    cs = find_section (cfg, restrict_section);
 
    if (NULL == cs)
    {
      cs = GNUNET_new (struct ConfigSection);
      cs->name = GNUNET_strdup (restrict_section);
      cs->next = cfg->sections;
      cfg->sections = cs;
      cs->entries = NULL;
    }
    if (cfg->diagnostics)
    {
      const char *pwname;
      const char *grname;
      char *sfn = GNUNET_STRINGS_filename_expand (inline_path);
      struct stat istat;
 
      cs->hint_secret_filename = sfn;
      if (0 == stat (sfn, &istat))
      {
        struct passwd *pw = getpwuid (istat.st_uid);
        struct group *gr = getgrgid (istat.st_gid);
        pwname = (NULL == pw) ? "<unknown>" : pw->pw_name;
        grname = (NULL == gr) ? "<unknown>" : gr->gr_name;
 
        GNUNET_asprintf (&cs->hint_secret_stat,
                         "%s:%s %o",
                         pwname,
                         grname,
                         istat.st_mode);
      }
      else
      {
        cs->hint_secret_stat = GNUNET_strdup ("<can't stat file>");
      }
      if (source_filename)
      {
        /* Possible that this secret section has been inlined before */
        GNUNET_free (cs->hint_inlined_from_filename);
        cs->hint_inlined_from_filename = GNUNET_strdup (source_filename);
        cs->hint_inlined_from_line = source_lineno;
      }
    }
 
    /* Put file in the load list for diagnostics, even if we can't access it. */
    {
      cf->level = cfg->current_nest_level;
      cf->source_filename = GNUNET_strdup (inline_path);
      cf->hint_restrict_section = GNUNET_strdup (restrict_section);
      GNUNET_CONTAINER_DLL_insert_tail (cfg->loaded_files_head,
                                        cfg->loaded_files_tail,
                                        cf);
    }
 
    if (GNUNET_OK != inner_ret)
    {
      cs->inaccessible = true;
      cf->hint_inaccessible = true;
      /* File can't be accessed, but that's okay. */
      fun_ret = GNUNET_OK;
      goto cleanup;
    }
 
    other_cfg = GNUNET_CONFIGURATION_create (cfg->pd);
    other_cfg->restrict_section = restrict_section;
    inner_ret = GNUNET_CONFIGURATION_parse (other_cfg,
                                            inline_path);
    if (GNUNET_OK != inner_ret)
    {
      cf->hint_inaccessible = true;
      fun_ret = inner_ret;
      goto cleanup;
    }
 
    cs = find_section (other_cfg,
                       restrict_section);
    if (NULL == cs)
    {
      LOG (GNUNET_ERROR_TYPE_INFO,
           "Configuration file '%s' loaded with @inline-secret@ "
           "does not contain section '%s'.\n",
           inline_path,
           restrict_section);
      /* Inlined configuration is accessible but doesn't contain any values.
         We treat this as if the inlined section was empty, and do not
         consider it an error. */
      fun_ret = GNUNET_OK;
      goto cleanup;
    }
    for (struct ConfigEntry *ce = cs->entries;
         NULL != ce;
         ce = ce->next)
      GNUNET_CONFIGURATION_set_value_string (cfg,
                                             restrict_section,
                                             ce->key,
                                             ce->val);
    fun_ret = GNUNET_OK;
  }
  else if (GNUNET_OK !=
           GNUNET_CONFIGURATION_parse (cfg,
                                       inline_path))
  {
    fun_ret = GNUNET_SYSERR;
    goto cleanup;
  }
  else
  {
    fun_ret = GNUNET_OK;
  }
cleanup:
  cfg->current_nest_level = old_nest_level;
  if (NULL != other_cfg)
    GNUNET_CONFIGURATION_destroy (other_cfg);
  GNUNET_free (inline_path);
  if (igc.files_length > 0)
  {
    for (size_t i = 0; i < igc.files_length; i++)
      GNUNET_free (igc.files[i]);
    GNUNET_array_grow (igc.files, igc.files_length, 0);
  }
  return fun_ret;
}

References cfg, cleanup(), collect_files_cb(), GNUNET_CONFIGURATION_Handle::current_nest_level, GNUNET_CONFIGURATION_Handle::diagnostics, ConfigSection::entries, CollectFilesContext::files, CollectFilesContext::files_length, find_section(), GNUNET_array_grow, GNUNET_asprintf(), GNUNET_assert, GNUNET_break, GNUNET_CONFIGURATION_create(), GNUNET_CONFIGURATION_destroy(), GNUNET_CONFIGURATION_parse(), GNUNET_CONFIGURATION_set_value_string(), GNUNET_CONTAINER_DLL_insert_tail, GNUNET_DISK_file_test_read(), GNUNET_DISK_glob(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_INFO, GNUNET_free, GNUNET_new, GNUNET_OK, GNUNET_strdup, GNUNET_STRINGS_filename_expand(), GNUNET_SYSERR, ConfigFile::hint_inaccessible, ConfigSection::hint_inlined_from_filename, ConfigSection::hint_inlined_from_line, ConfigFile::hint_restrict_section, ConfigSection::hint_secret_filename, ConfigSection::hint_secret_stat, ConfigSection::inaccessible, ConfigFile::level, GNUNET_CONFIGURATION_Handle::loaded_files_head, GNUNET_CONFIGURATION_Handle::loaded_files_tail, LOG, ConfigSection::name, ConfigEntry::next, ConfigSection::next, GNUNET_CONFIGURATION_Handle::pd, pstrcmp(), GNUNET_CONFIGURATION_Handle::restrict_section, GNUNET_CONFIGURATION_Handle::sections, and ConfigFile::source_filename.

Referenced by GNUNET_CONFIGURATION_deserialize().

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find_entry()

static struct ConfigEntry * find_entry ( const struct GNUNET_CONFIGURATION_Handle *  cfg, const char *  section, const char *  key  )

static

Find an entry from a configuration.

Parameters

cfg	handle to the configuration
section	section the option is in
key	the option

Returns

matching entry, NULL if not found

Definition at line 677 of file configuration.c.

{
  struct ConfigSection *sec;
  struct ConfigEntry *pos;
 
  if (NULL == (sec = find_section (cfg, section)))
    return NULL;
  if (sec->inaccessible)
  {
    LOG (GNUNET_ERROR_TYPE_WARNING,
         "Section '%s' is marked as inaccessible, because the configuration "
         "file that contains the section can't be read.  Attempts to use "
         "option '%s' will fail.\n",
         section,
         key);
    return NULL;
  }
  pos = sec->entries;
  while ((pos != NULL) && (0 != strcasecmp (key, pos->key)))
    pos = pos->next;
  return pos;
}

References cfg, ConfigSection::entries, find_section(), GNUNET_ERROR_TYPE_WARNING, ConfigSection::inaccessible, key, ConfigEntry::key, LOG, and ConfigEntry::next.

Referenced by compare_entries(), GNUNET_CONFIGURATION_get_value_choice(), GNUNET_CONFIGURATION_get_value_float(), GNUNET_CONFIGURATION_get_value_number(), GNUNET_CONFIGURATION_get_value_size(), GNUNET_CONFIGURATION_get_value_string(), GNUNET_CONFIGURATION_get_value_time(), GNUNET_CONFIGURATION_have_value(), GNUNET_CONFIGURATION_set_value_string(), and set_entry_hint().

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set_entry_hint()

static void set_entry_hint ( struct GNUNET_CONFIGURATION_Handle *  cfg, const char *  section, const char *  option, const char *  hint_filename, unsigned int  hint_line  )

static

Set a configuration hint.

Parameters

cfg	configuration handle
section	section
option	config option
hint_filename
hint_line

Definition at line 713 of file configuration.c.

{
  struct ConfigEntry *e = find_entry (cfg, section, option);
  if (! cfg->diagnostics)
    return;
  if (! e)
    return;
  e->hint_filename = GNUNET_strdup (hint_filename);
  e->hint_lineno = hint_line;
}

References cfg, GNUNET_CONFIGURATION_Handle::diagnostics, find_entry(), GNUNET_strdup, ConfigEntry::hint_filename, and ConfigEntry::hint_lineno.

Referenced by GNUNET_CONFIGURATION_deserialize().

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do_skip()

static bool do_skip ( const char *  sec, const char *  key  )

static

Should we skip this configuration entry when serializing?

Parameters

sec	section name
key	key

Returns

true if we should skip it

Definition at line 1134 of file configuration.c.

{
  if (0 != strcasecmp ("PATHS",
                       sec))
    return false;
  return ( (0 == strcasecmp ("DATADIR",
                             key)) ||
           (0 == strcasecmp ("LIBDIR",
                             key)) ||
           (0 == strcasecmp ("BINDIR",
                             key)) ||
           (0 == strcasecmp ("PREFIX",
                             key)) ||
           (0 == strcasecmp ("LOCALEDIR",
                             key)) ||
           (0 == strcasecmp ("ICONDIR",
                             key)) ||
           (0 == strcasecmp ("DOCDIR",
                             key)) ||
           (0 == strcasecmp ("DEFAULTCONFIG",
                             key)) ||
           (0 == strcasecmp ("LIBEXECDIR",
                             key)) );
}

References key.

Referenced by GNUNET_CONFIGURATION_serialize(), and GNUNET_CONFIGURATION_serialize_diagnostics().

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dump_os_ipk()

static void dump_os_ipk ( const struct GNUNET_CONFIGURATION_Handle *  cfg, struct GNUNET_Buffer *  buf, enum GNUNET_OS_InstallationPathKind  ipk  )

static

Dump an os installation path to a buffer.

Parameters

cfg	configuration
buf	buffer to write to
ipk	which path to print

Definition at line 1268 of file configuration.c.

{
  char *v = GNUNET_OS_installation_get_path (cfg->pd,
                                             ipk);
  const char *ipkname;
  switch (ipk)
  {
  case GNUNET_OS_IPK_DATADIR:
    ipkname = "IPK_DATADIR";
    break;
  case GNUNET_OS_IPK_BINDIR:
    ipkname = "IPK_BINDIR";
    break;
  case GNUNET_OS_IPK_LIBDIR:
    ipkname = "IPK_LIBDIR";
    break;
  case GNUNET_OS_IPK_PREFIX:
    ipkname = "IPK_PREFIX";
  case GNUNET_OS_IPK_LOCALEDIR:
    ipkname = "IPK_LOCALEDIR";
    break;
  case GNUNET_OS_IPK_ICONDIR:
    ipkname = "IPK_ICONDIR";
  case GNUNET_OS_IPK_DOCDIR:
    ipkname = "IPK_DOCDIR";
    break;
  case GNUNET_OS_IPK_LIBEXECDIR:
    ipkname = "IPK_LIBEXECDIR";
    break;
  case GNUNET_OS_IPK_SELF_PREFIX:
    ipkname = "IPK_SELF_PREFIX";
    break;
  default:
    ipkname = "??";
    break;
  }
  GNUNET_buffer_write_fstr (buf,
                            "# %s = %s\n",
                            ipkname,
                            v);
  GNUNET_free (v);
}

References cfg, GNUNET_buffer_write_fstr(), GNUNET_free, GNUNET_OS_installation_get_path(), 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, and GNUNET_CONFIGURATION_Handle::pd.

Referenced by GNUNET_CONFIGURATION_serialize_diagnostics().

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copy_entry()

static void copy_entry ( void *  cls, const char *  section, const char *  option, const char *  value  )

static

Copy a configuration value to the given target configuration.

Overwrites existing entries.

Parameters

cls	the destination configuration (struct GNUNET_CONFIGURATION_Handle *)
section	section for the value
option	option name of the value
value	value to copy

Definition at line 1626 of file configuration.c.

{
  struct GNUNET_CONFIGURATION_Handle *dst = cls;
 
  GNUNET_CONFIGURATION_set_value_string (dst,
                                         section,
                                         option,
                                         value);
}

References GNUNET_CONFIGURATION_set_value_string(), and value.

Referenced by GNUNET_CONFIGURATION_dup().

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compare_entries()

static void compare_entries ( void *  cls, const char *  section, const char *  option, const char *  value  )

static

A callback function, compares entries from two configurations (default against a new configuration) and write the diffs in a diff-configuration object (the callback object).

Parameters

cls	the diff configuration (struct DiffHandle *)
section	section for the value (of the default conf.)
option	option name of the value (of the default conf.)
value	value to copy (of the default conf.)

Definition at line 1665 of file configuration.c.

{
  struct DiffHandle *dh = cls;
  struct ConfigEntry *entNew;
 
  entNew = find_entry (dh->cfg_default, section, option);
  if ((NULL != entNew) && (NULL != entNew->val) &&
      (0 == strcmp (entNew->val, value)))
    return;
  GNUNET_CONFIGURATION_set_value_string (dh->cfgDiff,
                                         section,
                                         option,
                                         value);
}

References DiffHandle::cfg_default, DiffHandle::cfgDiff, find_entry(), GNUNET_CONFIGURATION_set_value_string(), ConfigEntry::val, and value.

Referenced by GNUNET_CONFIGURATION_get_diff().

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expand_dollar()

static char * expand_dollar ( const struct GNUNET_CONFIGURATION_Handle *  cfg, char *  orig, unsigned int  depth  )

static

Expand an expression of the form "$FOO/BAR" to "DIRECTORY/BAR" where either in the "PATHS" section or the environment "FOO" is set to "DIRECTORY".

We also support default expansion, i.e. ${VARIABLE:-default} will expand to $VARIABLE if VARIABLE is set in PATHS or the environment, and otherwise to "default". Note that "default" itself can also be a $-expression, thus "${VAR1:-{$VAR2}}" will expand to VAR1 and if that is not defined to VAR2.

Parameters

cfg	configuration to use for path expansion
orig	string to $-expand (will be freed!)
depth	recursion depth, used to detect recursive expansions

Returns

$-expanded string, never NULL unless orig was NULL

Definition at line 2045 of file configuration.c.

{
  char *prefix;
  char *result;
  char *start;
  const char *post;
  const char *env;
  char *def;
  char *end;
  unsigned int lopen;
  char erased_char;
  char *erased_pos;
  size_t len;
 
  if (NULL == orig)
    return NULL;
  if (depth > 128)
  {
    LOG (GNUNET_ERROR_TYPE_WARNING,
         "Recursive expansion suspected, aborting $-expansion for term `%s'\n",
         orig);
    return orig;
  }
  LOG (GNUNET_ERROR_TYPE_DEBUG,
       "Asked to $-expand %s\n",
       orig);
  if ('$' != orig[0])
  {
    LOG (GNUNET_ERROR_TYPE_DEBUG,
         "Doesn't start with $ - not expanding\n");
    return orig;
  }
  erased_char = 0;
  erased_pos = NULL;
  if ('{' == orig[1])
  {
    start = &orig[2];
    lopen = 1;
    end = &orig[1];
    while (lopen > 0)
    {
      end++;
      switch (*end)
      {
      case '}':
        lopen--;
        break;
 
      case '{':
        lopen++;
        break;
 
      case '\0':
        LOG (GNUNET_ERROR_TYPE_WARNING,
             "Missing closing `}' in option `%s'\n",
             orig);
        return orig;
 
      default:
        break;
      }
    }
    erased_char = *end;
    erased_pos = end;
    *end = '\0';
    post = end + 1;
    def = strchr (orig, ':');
    if (NULL != def)
    {
      *def = '\0';
      def++;
      if (('-' == *def) || ('=' == *def))
        def++;
      def = GNUNET_strdup (def);
    }
  }
  else
  {
    int i;
 
    start = &orig[1];
    def = NULL;
    i = 0;
    while ( (orig[i] != '/') &&
            (orig[i] != '\\') &&
            (orig[i] != '\0') &&
            (orig[i] != ' ') )
      i++;
    if (orig[i] == '\0')
    {
      post = "";
    }
    else
    {
      erased_char = orig[i];
      erased_pos = &orig[i];
      orig[i] = '\0';
      post = &orig[i + 1];
    }
  }
  LOG (GNUNET_ERROR_TYPE_DEBUG,
       "Split into `%s' and `%s' with default %s\n",
       start,
       post,
       def);
  if (GNUNET_OK !=
      GNUNET_CONFIGURATION_get_value_string (cfg,
                                             "PATHS",
                                             start,
                                             &prefix))
  {
    if (NULL == (env = getenv (start)))
    {
      /* try default */
      def = expand_dollar (cfg,
                           def,
                           depth + 1);
      env = def;
    }
    if (NULL == env)
    {
      start = GNUNET_strdup (start);
      if (erased_pos)
        *erased_pos = erased_char;
      LOG (GNUNET_ERROR_TYPE_WARNING,
           "Failed to expand `%s' in `%s' as it is neither found in [PATHS] nor defined as an environmental variable\n",
           start,
           orig);
      GNUNET_free (start);
      return orig;
    }
    prefix = GNUNET_strdup (env);
  }
  prefix = GNUNET_CONFIGURATION_expand_dollar (cfg,
                                               prefix);
  if ((erased_pos) && ('}' != erased_char))
  {
    len = strlen (prefix) + 1;
    prefix = GNUNET_realloc (prefix, len + 1);
    prefix[len - 1] = erased_char;
    prefix[len] = '\0';
  }
  result = GNUNET_malloc (strlen (prefix) + strlen (post) + 1);
  strcpy (result, prefix);
  strcat (result, post);
  GNUNET_free (def);
  GNUNET_free (prefix);
  GNUNET_free (orig);
  return result;
}

References cfg, end, env, expand_dollar(), getenv(), GNUNET_CONFIGURATION_expand_dollar(), GNUNET_CONFIGURATION_get_value_string(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_malloc, GNUNET_OK, GNUNET_realloc, GNUNET_strdup, LOG, prefix, result, and start.

Referenced by expand_dollar(), and GNUNET_CONFIGURATION_expand_dollar().

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escape_name()

static char * escape_name ( const char *  value )

static

FIXME.

Parameters

value

FIXME

Returns

FIXME

Definition at line 2363 of file configuration.c.

{
  char *escaped;
  const char *rpos;
  char *wpos;
 
  escaped = GNUNET_malloc (strlen (value) * 2 + 1);
  memset (escaped, 0, strlen (value) * 2 + 1);
  rpos = value;
  wpos = escaped;
  while (rpos[0] != '\0')
  {
    switch (rpos[0])
    {
    case '\\':
    case ' ':
      wpos[0] = '\\';
      wpos[1] = rpos[0];
      wpos += 2;
      break;
 
    default:
      wpos[0] = rpos[0];
      wpos++;
    }
    rpos++;
  }
  return escaped;
}

References GNUNET_malloc, and value.

Referenced by GNUNET_CONFIGURATION_append_value_filename(), and GNUNET_CONFIGURATION_remove_value_filename().

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test_match()

static enum GNUNET_GenericReturnValue test_match ( void *  cls, const char *  fn  )

static

FIXME.

Parameters

cls	string we compare with (const char*)
fn	filename we are currently looking at

Returns

GNUNET_OK if the names do not match, GNUNET_SYSERR if they do

Definition at line 2402 of file configuration.c.

{
  const char *of = cls;
 
  return (0 == strcmp (of, fn))
    ? GNUNET_SYSERR
    : GNUNET_OK;
}

References GNUNET_OK, and GNUNET_SYSERR.

Referenced by GNUNET_CONFIGURATION_append_value_filename().

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print_filename_option()

static void print_filename_option ( void *  cls, const char *  section, const char *  option, const char *  value  )

static

Print each option in a given section as a filename.

Parameters

cls	closure
section	name of the section
option	name of the option
value	value of the option

Definition at line 2733 of file configuration.c.

{
  const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
 
  char *value_fn;
  char *fn;
 
  GNUNET_assert (GNUNET_OK ==
                 GNUNET_CONFIGURATION_get_value_filename (cfg,
                                                          section,
                                                          option,
                                                          &value_fn));
  fn = GNUNET_STRINGS_filename_expand (value_fn);
  if (NULL == fn)
    fn = value_fn;
  else
    GNUNET_free (value_fn);
  fprintf (stdout,
           "%s = %s\n",
           option,
           fn);
  GNUNET_free (fn);
}

References cfg, GNUNET_assert, GNUNET_CONFIGURATION_get_value_filename(), GNUNET_free, GNUNET_OK, and GNUNET_STRINGS_filename_expand().

Referenced by GNUNET_CONFIGURATION_config_tool_run().

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print_option()

static void print_option ( void *  cls, const char *  section, const char *  option, const char *  value  )

static

Print each option in a given section.

Parameters

cls	closure
section	name of the section
option	name of the option
value	value of the option

Definition at line 2770 of file configuration.c.

{
  (void) cls;
  (void) section;
 
  fprintf (stdout,
           "%s = %s\n",
           option,
           value);
}

References value.

Referenced by GNUNET_CONFIGURATION_config_tool_run().

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print_section_name()

static void print_section_name ( void *  cls, const char *  section  )

static

Print out given section name.

Parameters

cls	unused
section	a section in the configuration file

Definition at line 2792 of file configuration.c.

{
  (void) cls;
  fprintf (stdout,
           "%s\n",
           section);
}

Referenced by GNUNET_CONFIGURATION_config_tool_run().

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