osip_uri.c

libosip2-3.0.3最新版本

    return -1;
  if (url->scheme == NULL && url->string != NULL)
    return -1;
  if (url->string == NULL && url->scheme == NULL)
    scheme = "sip";             /* default is sipurl */
  else
    scheme = url->scheme;

  if (url->string != NULL)
    {
      buf = (char *) osip_malloc (strlen (scheme) + strlen (url->string) + 3);
      if (buf == NULL)
        return -1;
      *dest = buf;
      sprintf (buf, "%s:", scheme);
      buf = buf + strlen (scheme) + 1;
      sprintf (buf, "%s", url->string);
      buf = buf + strlen (url->string);
      return 0;
    }

  len = strlen (scheme) + 1 + strlen (url->host) + 5;
  if (url->username != NULL)
    len = len + (strlen (url->username) * 3) + 1;       /* count escaped char */
  if (url->password != NULL)
    len = len + (strlen (url->password) * 3) + 1;
  if (url->port != NULL)
    len = len + strlen (url->port) + 3;

  buf = (char *) osip_malloc (len);
  if (buf == NULL)
    return -1;
  tmp = buf;

  sprintf (tmp, "%s:", scheme);
  tmp = tmp + strlen (tmp);

  if (url->username != NULL)
    {
      char *tmp2 = __osip_uri_escape_userinfo (url->username);

      sprintf (tmp, "%s", tmp2);
      osip_free (tmp2);
      tmp = tmp + strlen (tmp);
    }
  if ((url->password != NULL) && (url->username != NULL))
    {                           /* be sure that when a password is given, a username is also given */
      char *tmp2 = __osip_uri_escape_password (url->password);

      sprintf (tmp, ":%s", tmp2);
      osip_free (tmp2);
      tmp = tmp + strlen (tmp);
    }
  if (url->username != NULL)
    {                           /* we add a '@' only when username is present... */
      sprintf (tmp, "@");
      tmp++;
    }
  if (strchr (url->host, ':') != NULL)
    {
      sprintf (tmp, "[%s]", url->host);
      tmp = tmp + strlen (tmp);
  } else
    {
      sprintf (tmp, "%s", url->host);
      tmp = tmp + strlen (tmp);
    }
  if (url->port != NULL)
    {
      sprintf (tmp, ":%s", url->port);
      tmp = tmp + strlen (tmp);
    }

  {
    int pos = 0;
    osip_uri_param_t *u_param;

    while (!osip_list_eol (&url->url_params, pos))
      {
        char *tmp1;
        char *tmp2 = NULL;

        u_param = (osip_uri_param_t *) osip_list_get (&url->url_params, pos);

        tmp1 = __osip_uri_escape_uri_param (u_param->gname);
        if (u_param->gvalue == NULL)
          plen = strlen (tmp1) + 2;
        else
          {
            tmp2 = __osip_uri_escape_uri_param (u_param->gvalue);
            plen = strlen (tmp1) + strlen (tmp2) + 3;
          }
        len = len + plen;
        buf = (char *) osip_realloc (buf, len);
        tmp = buf;
        tmp = tmp + strlen (tmp);
        if (u_param->gvalue == NULL)
          sprintf (tmp, ";%s", tmp1);
        else
          {
            sprintf (tmp, ";%s=%s", tmp1, tmp2);
            osip_free (tmp2);
          }
        osip_free (tmp1);
        pos++;
      }
  }

  {
    int pos = 0;
    osip_uri_header_t *u_header;

    while (!osip_list_eol (&url->url_headers, pos))
      {
        char *tmp1;
        char *tmp2;

        u_header = (osip_uri_header_t *) osip_list_get (&url->url_headers, pos);
        tmp1 = __osip_uri_escape_header_param (u_header->gname);

        if (tmp1 == NULL)
          {
            osip_free (buf);
            return -1;
          }

        tmp2 = __osip_uri_escape_header_param (u_header->gvalue);

        if (tmp2 == NULL)
          {
            osip_free (tmp1);
            osip_free (buf);
            return -1;
          }
        plen = strlen (tmp1) + strlen (tmp2) + 4;

        len = len + plen;
        buf = (char *) osip_realloc (buf, len);
        tmp = buf;
        tmp = tmp + strlen (tmp);
        if (pos == 0)
          sprintf (tmp, "?%s=%s", tmp1, tmp2);
        else
          sprintf (tmp, "&%s=%s", tmp1, tmp2);
        osip_free (tmp1);
        osip_free (tmp2);
        pos++;
      }
  }

  *dest = buf;
  return 0;
}


void
osip_uri_free (osip_uri_t * url)
{
  int pos = 0;

  if (url == NULL)
    return;
  osip_free (url->scheme);
  osip_free (url->username);
  osip_free (url->password);
  osip_free (url->host);
  osip_free (url->port);

  osip_uri_param_freelist (&url->url_params);

  {
    osip_uri_header_t *u_header;

    while (!osip_list_eol (&url->url_headers, pos))
      {
        u_header = (osip_uri_header_t *) osip_list_get (&url->url_headers, pos);
        osip_list_remove (&url->url_headers, pos);
        osip_uri_header_free (u_header);
      }
  }

  osip_free (url->string);

  osip_free (url);
}

int
osip_uri_clone (const osip_uri_t * url, osip_uri_t ** dest)
{
  int i;
  osip_uri_t *ur;

  *dest = NULL;
  if (url == NULL)
    return -1;
  if (url->host == NULL && url->string == NULL)
    return -1;

  i = osip_uri_init (&ur);
  if (i == -1)                  /* allocation failed */
    return -1;
  if (url->scheme != NULL)
    ur->scheme = osip_strdup (url->scheme);
  if (url->username != NULL)
    ur->username = osip_strdup (url->username);
  if (url->password != NULL)
    ur->password = osip_strdup (url->password);
  if (url->host != NULL)
    ur->host = osip_strdup (url->host);
  if (url->port != NULL)
    ur->port = osip_strdup (url->port);
  if (url->string != NULL)
    ur->string = osip_strdup (url->string);

  i = osip_list_clone(&url->url_params, &ur->url_params, (int *(*)(void *, void *)) &osip_uri_param_clone);
  if (i != 0)
    {
      osip_uri_free(ur);
      return -1;
    }
  i = osip_list_clone(&url->url_headers, &ur->url_headers, (int *(*)(void *, void *)) &osip_uri_param_clone);
  if (i != 0)
    {
      osip_uri_free(ur);
      return -1;
    }
  *dest = ur;
  return 0;
}

int
osip_uri_param_init (osip_uri_param_t ** url_param)
{
  *url_param = (osip_uri_param_t *) osip_malloc (sizeof (osip_uri_param_t));
  (*url_param)->gname = NULL;
  (*url_param)->gvalue = NULL;
  return 0;
}

void
osip_uri_param_free (osip_uri_param_t * url_param)
{
  osip_free (url_param->gname);
  osip_free (url_param->gvalue);
  osip_free (url_param);
}

int
osip_uri_param_set (osip_uri_param_t * url_param, char *pname, char *pvalue)
{
  url_param->gname = pname;
  /* not needed for url, but for all other generic params */
  osip_clrspace (url_param->gname);
  url_param->gvalue = pvalue;
  if (url_param->gvalue != NULL)
    osip_clrspace (url_param->gvalue);
  return 0;
}

int
osip_uri_param_add (osip_list_t * url_params, char *pname, char *pvalue)
{
  int i;
  osip_uri_param_t *url_param;

  i = osip_uri_param_init (&url_param);
  if (i != 0)
    return -1;
  i = osip_uri_param_set (url_param, pname, pvalue);
  if (i != 0)
    {
      osip_uri_param_free (url_param);
      return -1;
    }
  osip_list_add (url_params, url_param, -1);
  return 0;
}

void
osip_uri_param_freelist (osip_list_t * params)
{
  osip_uri_param_t *u_param;

  while (!osip_list_eol (params, 0))
    {
      u_param = (osip_uri_param_t *) osip_list_get (params, 0);
      osip_list_remove (params, 0);
      osip_uri_param_free (u_param);
    }
}

int
osip_uri_param_get_byname (osip_list_t * params, char *pname,
                           osip_uri_param_t ** url_param)
{
  int pos = 0;
  size_t pname_len;
  osip_uri_param_t *u_param;

  *url_param = NULL;
  if (pname == NULL)
    return -1;
  pname_len = strlen (pname);
  if (pname_len <= 0)
    return -1;
  while (!osip_list_eol (params, pos))
    {
      size_t len;

      u_param = (osip_uri_param_t *) osip_list_get (params, pos);
      len = strlen (u_param->gname);
      if (pname_len == len
          && osip_strncasecmp (u_param->gname, pname, strlen (pname)) == 0)
        {
          *url_param = u_param;
          return 0;
        }
      pos++;
    }
  return -1;
}

int
osip_uri_param_clone (const osip_uri_param_t * uparam, osip_uri_param_t ** dest)
{
  int i;
  osip_uri_param_t *up;

  *dest = NULL;
  if (uparam == NULL)
    return -1;
  if (uparam->gname == NULL)
    return -1;                  /* name is mandatory */

  i = osip_uri_param_init (&up);
  if (i != 0)                   /* allocation failed */
    return -1;
  up->gname = osip_strdup (uparam->gname);
  if (uparam->gvalue != NULL)
    up->gvalue = osip_strdup (uparam->gvalue);
  else
    up->gvalue = NULL;
  *dest = up;
  return 0;
}


#define _ALPHANUM_ "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890\0"
#define _RESERVED_ ";/?:@&=+$\0"
#define _MARK_ "-_.!~*'()\0"

#define _MARK__USER_UNRESERVED_ "-_.!~*'()&=+$,;?/\0"
#define _MARK__PWORD_UNRESERVED_ "-_.!~*'()&=+$,\0"
#define _MARK__URI_PARAM_UNRESERVED_ "-_.!~*'()[]/:&+$\0"
#define _MARK__HEADER_PARAM_UNRESERVED_ "-_.!~*'()[]/?:+$\0"

#define osip_is_alphanum(in) (  \
       (in >= 'a' && in <= 'z') || \
       (in >= 'A' && in <= 'Z') || \
       (in >= '0' && in <= '9'))

char *
__osip_uri_escape_nonascii_and_nondef (const char *string, const char *def)
{
  size_t alloc = strlen (string) + 1;
  size_t length;
  char *ns = osip_malloc (alloc);
  unsigned char in;
  size_t newlen = alloc;
  int index = 0;
  const char *tmp;
  int i;

  length = alloc - 1;
  while (length--)
    {
      in = *string;

      i = 0;
      tmp = NULL;
      if (osip_is_alphanum (in))
        tmp = string;
      else
        {
          for (; def[i] != '\0' && def[i] != in; i++)
            {
            }
          if (def[i] != '\0')
            tmp = string;
        }
      if (tmp == NULL)
        {
          /* encode it */
          newlen += 2;          /* the size grows with two, since this'll become a %XX */
          if (newlen > alloc)
            {
              alloc *= 2;
              ns = osip_realloc (ns, alloc);
              if (!ns)
                return NULL;
            }
          sprintf (&ns[index], "%%%02X", in);
          index += 3;
      } else
        {
          /* just copy this */
          ns[index++] = in;
        }
      string++;
    }
  ns[index] = 0;                /* terminate it */
  return ns;
}

/* user =  *( unreserved / escaped / user-unreserved ) */
const char *userinfo_def = /* implied _ALPHANUM_ */ _MARK__USER_UNRESERVED_;
char *
__osip_uri_escape_userinfo (const char *string)
{
  return __osip_uri_escape_nonascii_and_nondef (string, userinfo_def);
}

/* user =  *( unreserved / escaped / user-unreserved ) */
const char *password_def = _MARK__PWORD_UNRESERVED_;
char *
__osip_uri_escape_password (const char *string)
{
  return __osip_uri_escape_nonascii_and_nondef (string, password_def);
}

const char *uri_param_def = _MARK__URI_PARAM_UNRESERVED_;
char *
__osip_uri_escape_uri_param (char *string)
{
  return __osip_uri_escape_nonascii_and_nondef (string, uri_param_def);
}

const char *header_param_def = _MARK__HEADER_PARAM_UNRESERVED_;
char *
__osip_uri_escape_header_param (char *string)
{
  return __osip_uri_escape_nonascii_and_nondef (string, header_param_def);
}

void
__osip_uri_unescape (char *string)
{
  size_t alloc = strlen (string) + 1;
  unsigned char in;
  int index = 0;
  unsigned int hex;
  char *ptr;

  ptr = string;
  while (--alloc > 0)
    {
      in = *ptr;
      if ('%' == in)
        {
          /* encoded part */
          if (alloc > 2 && sscanf (ptr + 1, "%02X", &hex) == 1)
            {
              in = (unsigned char) hex;
              if (*(ptr + 2) &&
                  ((*(ptr + 2) >= '0' && *(ptr + 2) <= '9') ||
                   (*(ptr + 2) >= 'a' && *(ptr + 2) <= 'f') ||
                   (*(ptr + 2) >= 'A' && *(ptr + 2) <= 'F')))
                {
                  alloc -= 2;
                  ptr += 2;
              } else
                {
                  alloc -= 1;
                  ptr += 1;
                }
            }
          else
            {
              break;
            }
        }

      string[index++] = in;
      ptr++;
    }
  string[index] = 0;            /* terminate it */
}


/* RFC3261 16.5 
 */
int
osip_uri_to_str_canonical (const osip_uri_t * url, char **dest)
{
  int result;

  *dest = NULL;
  result = osip_uri_to_str (url, dest);
  if (result == 0)
    {
      /*
         tmp = strchr(*dest, ";");
         if (tmp !=NULL) {
         buf=strndup(*dest, tmp-(*dest));
         osip_free(*dest);
         *dest=buf;
         }
       */
      __osip_uri_unescape (*dest);
    }
  return result;
}