pabc_helper.h File Reference

#include "platform.h"
#include "gnunet_util_lib.h"
#include <pabc/pabc.h>

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Macros
#define	PATH_MAX   4096
#define	PABC_ISK_EXT   ".isk"
#define	PABC_PP_EXT   ".pp"
#define	PABC_USR_EXT   ".usr"
#define	PABC_ATTR_DELIM   "="

Functions
enum GNUNET_GenericReturnValue	PABC_write_public_parameters (char const *const pp_name, struct pabc_public_parameters *const pp)
enum GNUNET_GenericReturnValue	PABC_load_public_parameters (struct pabc_context *const ctx, char const *const pp_name, struct pabc_public_parameters **pp)
enum GNUNET_GenericReturnValue	PABC_write_usr_ctx (char const *const user_name, char const *const pp_name, struct pabc_context const *const ctx, struct pabc_public_parameters const *const pp, struct pabc_user_context *const usr_ctx)
enum GNUNET_GenericReturnValue	PABC_read_usr_ctx (char const *const user_name, char const *const pp_name, struct pabc_context const *const ctx, struct pabc_public_parameters const *const pp, struct pabc_user_context **usr_ctx)

Macro Definition Documentation

PATH_MAX

#define PATH_MAX   4096

Definition at line 6 of file pabc_helper.h.

PABC_ISK_EXT

#define PABC_ISK_EXT   ".isk"

Definition at line 9 of file pabc_helper.h.

PABC_PP_EXT

#define PABC_PP_EXT   ".pp"

Definition at line 11 of file pabc_helper.h.

PABC_USR_EXT

#define PABC_USR_EXT   ".usr"

Definition at line 13 of file pabc_helper.h.

PABC_ATTR_DELIM

#define PABC_ATTR_DELIM   "="

Definition at line 15 of file pabc_helper.h.

Function Documentation

PABC_write_public_parameters()

enum GNUNET_GenericReturnValue PABC_write_public_parameters	(	char const *const	pp_name,
		struct pabc_public_parameters *const	pp
	)

Definition at line 173 of file pabc_helper.c.

{
  char *json;
  char *filename;
  char *pp_filename;
  enum pabc_status status;
  struct pabc_context *ctx = NULL;
 
  GNUNET_STRINGS_urlencode (strlen (pp_name),
                            pp_name,
                            &pp_filename);
  PABC_ASSERT (pabc_new_ctx (&ctx));
  // store in json file
  status = pabc_encode_public_parameters (ctx, pp, &json);
  if (status != PABC_OK)
  {
    GNUNET_free (pp_filename);
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Failed to encode public parameters.\n");
    pabc_free_ctx (&ctx);
    return GNUNET_SYSERR;
  }
 
  size_t filename_size =
    strlen (get_pabcdir ()) + 1 + strlen (pp_filename) + strlen (PABC_PP_EXT)
    + 1;
  filename = GNUNET_malloc (filename_size);
  if (! filename)
  {
    GNUNET_free (pp_filename);
    PABC_FREE_NULL (json);
    pabc_free_ctx (&ctx);
    return GNUNET_SYSERR;
  }
  snprintf (filename, filename_size, "%s/%s%s", get_pabcdir (), pp_filename,
            PABC_PP_EXT);
 
  GNUNET_free (pp_filename);
  if (GNUNET_OK != write_file (filename, json))
  {
    PABC_FREE_NULL (filename);
    PABC_FREE_NULL (json);
    pabc_free_ctx (&ctx);
    return GNUNET_SYSERR;
  }
  PABC_FREE_NULL (filename);
  PABC_FREE_NULL (json);
  pabc_free_ctx (&ctx);
  return GNUNET_OK;
}

References ctx, filename, get_pabcdir(), GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_log, GNUNET_malloc, GNUNET_OK, GNUNET_STRINGS_urlencode(), GNUNET_SYSERR, PABC_PP_EXT, status, and write_file().

Referenced by cr_cont().

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PABC_load_public_parameters()

enum GNUNET_GenericReturnValue PABC_load_public_parameters	(	struct pabc_context *const	ctx,
		char const *const	pp_name,
		struct pabc_public_parameters **	pp
	)

Definition at line 135 of file pabc_helper.c.

{
  char fname[PATH_MAX];
  char *pp_filename;
  const char *pdir = get_pabcdir ();
 
  if (ctx == NULL)
    return GNUNET_SYSERR;
  if (pp_name == NULL)
    return GNUNET_SYSERR;
 
  GNUNET_STRINGS_urlencode (strlen (pp_name),
                            pp_name,
                            &pp_filename);
  if (GNUNET_YES != GNUNET_DISK_directory_test (pdir, GNUNET_YES))
  {
    GNUNET_free (pp_filename);
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Error reading %s\n", pdir);
    return GNUNET_SYSERR;
  }
  snprintf (fname, PATH_MAX, "%s/%s%s", pdir, pp_filename, PABC_PP_EXT);
  if (GNUNET_YES != GNUNET_DISK_file_test (fname))
  {
    GNUNET_free (pp_filename);
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Error testing %s\n", fname);
    return GNUNET_SYSERR;
  }
  *pp = PABC_read_issuer_ppfile (fname, ctx);
  if (*pp)
    return GNUNET_OK;
  else
    return GNUNET_SYSERR;
}

References ctx, get_pabcdir(), GNUNET_DISK_directory_test(), GNUNET_DISK_file_test(), GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_log, GNUNET_OK, GNUNET_STRINGS_urlencode(), GNUNET_SYSERR, GNUNET_YES, PABC_PP_EXT, PABC_read_issuer_ppfile(), and PATH_MAX.

Referenced by pabc_create_presentation().

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PABC_write_usr_ctx()

enum GNUNET_GenericReturnValue PABC_write_usr_ctx	(	char const *const	user_name,
		char const *const	pp_name,
		struct pabc_context const *const	ctx,
		struct pabc_public_parameters const *const	pp,
		struct pabc_user_context *const	usr_ctx
	)

Definition at line 227 of file pabc_helper.c.

{
 
  char *pp_filename;
  char *json = NULL;
  enum pabc_status status;
  char *fname = NULL;
 
  if (NULL == usr_name)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No issuer given.\n");
    return GNUNET_SYSERR;
  }
  if (NULL == pp_name)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No user given.\n");
    return GNUNET_SYSERR;
  }
  if (NULL == ctx)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No context given.\n");
    return GNUNET_SYSERR;
  }
  if (NULL == pp)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No public parameters given.\n");
    return GNUNET_SYSERR;
  }
  if (NULL == usr_ctx)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No user context given.\n");
    return GNUNET_SYSERR;
  }
 
  GNUNET_STRINGS_urlencode (strlen (pp_name),
                            pp_name,
                            &pp_filename);
  status = pabc_encode_user_ctx (ctx, pp, usr_ctx, &json);
  if (PABC_OK != status)
  {
    GNUNET_free (pp_filename);
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to encode user context.\n");
    return status;
  }
 
  size_t fname_size = strlen (get_pabcdir ()) + 1 + strlen (usr_name) + 1
                      + strlen (pp_filename) + strlen (PABC_USR_EXT) + 1;
  fname = GNUNET_malloc (fname_size);
 
  snprintf (fname, fname_size, "%s/%s_%s%s", get_pabcdir (), usr_name,
            pp_filename,
            PABC_USR_EXT);
 
  GNUNET_free (pp_filename);
  if (GNUNET_OK == write_file (fname, json))
  {
    GNUNET_free (fname);
    GNUNET_free (json);
    return GNUNET_OK;
  }
  else
  {
    GNUNET_free (fname);
    GNUNET_free (json);
    return GNUNET_SYSERR;
  }
}

References ctx, get_pabcdir(), GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_log, GNUNET_malloc, GNUNET_OK, GNUNET_STRINGS_urlencode(), GNUNET_SYSERR, PABC_USR_EXT, status, and write_file().

Referenced by cr_cont().

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PABC_read_usr_ctx()

enum GNUNET_GenericReturnValue PABC_read_usr_ctx	(	char const *const	user_name,
		char const *const	pp_name,
		struct pabc_context const *const	ctx,
		struct pabc_public_parameters const *const	pp,
		struct pabc_user_context **	usr_ctx
	)

Definition at line 301 of file pabc_helper.c.

{
  char *json = NULL;
  char *pp_filename;
  enum pabc_status status;
 
  char *fname = NULL;
 
  if (NULL == usr_name)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No issuer given.\n");
    return GNUNET_SYSERR;
  }
  if (NULL == pp_name)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No user given.\n");
    return GNUNET_SYSERR;
  }
  if (NULL == ctx)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No context given.\n");
    return GNUNET_SYSERR;
  }
  if (NULL == pp)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No public parameters given.\n");
    return GNUNET_SYSERR;
  }
  if (NULL == usr_ctx)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No user context given.\n");
    return GNUNET_SYSERR;
  }
  GNUNET_STRINGS_urlencode (strlen (pp_name),
                            pp_name,
                            &pp_filename);
 
  size_t fname_size = strlen (get_pabcdir ()) + 1 + strlen (usr_name) + 1
                      + strlen (pp_filename) + strlen (PABC_USR_EXT) + 1;
  fname = GNUNET_malloc (fname_size);
  snprintf (fname, fname_size, "%s/%s_%s%s", get_pabcdir (), usr_name,
            pp_filename,
            PABC_USR_EXT);
  GNUNET_free (pp_filename);
  if (GNUNET_OK != read_file (fname, &json))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Failed to read `%s'\n", fname);
    PABC_FREE_NULL (fname);
    return GNUNET_SYSERR;
  }
  GNUNET_free (fname);
 
  status = pabc_new_user_context (ctx, pp, usr_ctx);
  if (PABC_OK != status)
  {
    GNUNET_free (json);
    return GNUNET_SYSERR;
  }
  status = pabc_decode_user_ctx (ctx, pp, *usr_ctx, json);
  GNUNET_free (json);
  if (PABC_OK != status)
  {
    pabc_free_user_context (ctx, pp, usr_ctx);
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to encode user context.\n");
    return GNUNET_SYSERR;
  }
 
  return GNUNET_OK;
}

References ctx, get_pabcdir(), GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_log, GNUNET_malloc, GNUNET_OK, GNUNET_STRINGS_urlencode(), GNUNET_SYSERR, PABC_USR_EXT, read_file(), and status.

Referenced by cr_cont(), and pabc_create_presentation().

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