int conn_comm_get_server_address(struct sockaddr_in *addr,
const char *hostname)
{
int ret;
DEBUGASSERT(addr && hostname);
con_dbg("Getting IP address for '%s'\n", hostname);
ret = dns_gethostip(hostname, &addr->sin_addr.s_addr);
if (ret != OK)
{
con_dbg("Failed to get address for '%s'\n", hostname);
return ret;
}
addr->sin_family = AF_INET;
con_dbg("Got address %d.%d.%d.%d for '%s'\n",
addr->sin_addr.s_addr & 0xff,
(addr->sin_addr.s_addr >> 8) & 0xff,
(addr->sin_addr.s_addr >> 16) & 0xff,
addr->sin_addr.s_addr >> 24,
hostname);
return OK;
}
static int wget_base(FAR const char *url, FAR char *buffer, int buflen,
wget_callback_t callback, FAR void *arg,
FAR const char *posts, uint8_t mode)
{
struct sockaddr_in server;
struct wget_s ws;
struct timeval tv;
bool redirected;
char *dest,post_size[8];
int sockfd;
int len,post_len;
int ret;
/* Initialize the state structure */
memset(&ws, 0, sizeof(struct wget_s));
ws.buffer = buffer;
ws.buflen = buflen;
ws.port = 80;
/* Parse the hostname (with optional port number) and filename from the URL */
ret = netlib_parsehttpurl(url, &ws.port,
ws.hostname, CONFIG_WEBCLIENT_MAXHOSTNAME,
ws.filename, CONFIG_WEBCLIENT_MAXFILENAME);
if (ret != 0)
{
ndbg("ERROR: Malformed HTTP URL: %s\n", url);
set_errno(-ret);
return ERROR;
}
nvdbg("hostname='%s' filename='%s'\n", ws.hostname, ws.filename);
/* The following sequence may repeat indefinitely if we are redirected */
do
{
/* Re-initialize portions of the state structure that could have
* been left from the previous time through the loop and should not
* persist with the new connection.
*/
ws.httpstatus = HTTPSTATUS_NONE;
ws.offset = 0;
ws.datend = 0;
ws.ndx = 0;
/* Create a socket */
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0)
{
/* socket failed. It will set the errno appropriately */
ndbg("ERROR: socket failed: %d\n", errno);
return ERROR;
}
/* Set send and receive timeout values */
tv.tv_sec = CONFIG_WEBCLIENT_TIMEOUT;
tv.tv_usec = 0;
(void)setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, (FAR const void *)&tv,
sizeof(struct timeval));
(void)setsockopt(sockfd, SOL_SOCKET, SO_SNDTIMEO, (FAR const void *)&tv,
sizeof(struct timeval));
/* Get the server address from the host name */
server.sin_family = AF_INET;
server.sin_port = htons(ws.port);
ret = dns_gethostip(ws.hostname, &server.sin_addr.s_addr);
if (ret < 0)
{
/* Could not resolve host (or malformed IP address) */
ndbg("ERROR: Failed to resolve hostname\n");
ret = -EHOSTUNREACH;
goto errout_with_errno;
}
/* Connect to server. First we have to set some fields in the
* 'server' address structure. The system will assign me an arbitrary
* local port that is not in use.
*/
ret = connect(sockfd, (struct sockaddr *)&server, sizeof(struct sockaddr_in));
if (ret < 0)
{
ndbg("ERROR: connect failed: %d\n", errno);
goto errout;
}
/* Send the GET request */
dest = ws.buffer;
if (mode == WGET_MODE_POST)
{
dest = wget_strcpy(dest, g_httppost);
}
else
{
dest = wget_strcpy(dest, g_httpget);
}
#ifndef WGET_USE_URLENCODE
dest = wget_strcpy(dest, ws.filename);
#else
//dest = wget_urlencode_strcpy(dest, ws.filename);
dest = wget_strcpy(dest, ws.filename);
#endif
*dest++ = ISO_space;
dest = wget_strcpy(dest, g_http10);
dest = wget_strcpy(dest, g_httpcrnl);
dest = wget_strcpy(dest, g_httphost);
dest = wget_strcpy(dest, ws.hostname);
dest = wget_strcpy(dest, g_httpcrnl);
if (mode == WGET_MODE_POST)
{
dest = wget_strcpy(dest, g_httpform);
dest = wget_strcpy(dest, g_httpcrnl);
dest = wget_strcpy(dest, g_httpcontsize);
/* Post content size */
post_len = strlen((char *)posts);
sprintf(post_size,"%d", post_len);
dest = wget_strcpy(dest, post_size);
dest = wget_strcpy(dest, g_httpcrnl);
}
dest = wget_strcpy(dest, g_httpuseragentfields);
if (mode == WGET_MODE_POST)
{
dest = wget_strcpy(dest, (char *)posts);
}
len = dest - buffer;
ret = send(sockfd, buffer, len, 0);
if (ret < 0)
{
ndbg("ERROR: send failed: %d\n", errno);
goto errout;
}
/* Now loop to get the file sent in response to the GET. This
* loop continues until either we read the end of file (nbytes == 0)
* or until we detect that we have been redirected.
*/
ws.state = WEBCLIENT_STATE_STATUSLINE;
redirected = false;
for (;;)
{
ws.datend = recv(sockfd, ws.buffer, ws.buflen, 0);
if (ws.datend < 0)
{
ndbg("ERROR: recv failed: %d\n", errno);
ret = ws.datend;
goto errout_with_errno;
}
else if (ws.datend == 0)
{
nvdbg("Connection lost\n");
close(sockfd);
break;
}
/* Handle initial parsing of the status line */
ws.offset = 0;
if (ws.state == WEBCLIENT_STATE_STATUSLINE)
{
ret = wget_parsestatus(&ws);
if (ret < 0)
{
goto errout_with_errno;
}
}
/* Parse the HTTP data */
if (ws.state == WEBCLIENT_STATE_HEADERS)
{
ret = wget_parseheaders(&ws);
if (ret < 0)
{
goto errout_with_errno;
}
}
/* Dispose of the data payload */
if (ws.state == WEBCLIENT_STATE_DATA)
{
if (ws.httpstatus != HTTPSTATUS_MOVED)
{
/* Let the client decide what to do with the received file */
callback(&ws.buffer, ws.offset, ws.datend, &buflen, arg);
}
else
{
redirected = true;
close(sockfd);
break;
}
}
}
}
while (redirected);
return OK;
errout_with_errno:
set_errno(-ret);
errout:
close(sockfd);
return ERROR;
}
