* the cases where SD is not present or page not found, using embedded pages.
* Quering from browser the /status page, the server return a json dictionary where are store
* some board status info, like board temperature, up-time, etc.
+ *
+ * notest: avr
*/
#include "http.h"
#include <cfg/log.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
-static const char http_html_hdr_200[] = "HTTP/1.1 200 OK\r\nContent-type: text/html\r\n\r\n";
-static const char http_html_hdr_404[] = "HTTP/1.1 404 Not Found\r\nContent-type: text/html\r\n\r\n";
-static const char http_html_hdr_500[] = "HTTP/1.1 500 Internal Server Error\r\nContent-type: text/html\r\n\r\n";
+static const char http_html_hdr_200[] = "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n";
+static const char http_html_hdr_404[] = "HTTP/1.0 404 Not Found\r\nContent-type: text/html\r\n\r\n";
+static const char http_html_hdr_500[] = "HTTP/1.0 500 Internal Server Error\r\nContent-type: text/html\r\n\r\n";
static HttpCGI *cgi_table;
static http_handler_t http_callback;
+static char decoded_str[80];
-
-void http_sendOk(struct netconn *client)
+/**
+ * Get key value from tokenized buffer
+ */
+int http_getValue(char *tolenized_buf, size_t tolenized_buf_len, const char *key, char *value, size_t len)
{
- netconn_write(client, http_html_hdr_200, sizeof(http_html_hdr_200) - 1, NETCONN_NOCOPY);
+ if (!tolenized_buf || !key || !value)
+ return -1;
+
+ char *p = tolenized_buf;
+ size_t value_len = 0;
+
+ memset(value, 0, len);
+
+ for (size_t i = 0; i < tolenized_buf_len; i++)
+ {
+ size_t token_len = strlen(p);
+ http_decodeUrl(p, token_len, decoded_str, sizeof(decoded_str));
+
+ if (!strcmp(key, decoded_str))
+ {
+ /* skip key */
+ p += token_len + 1;
+
+ http_decodeUrl(p, strlen(p), decoded_str, sizeof(decoded_str));
+ value_len = strlen(decoded_str);
+
+ if (value_len >= len)
+ return -1;
+
+ strcpy(value, decoded_str);
+ return value_len;
+ }
+ /* jump to next pair */
+ p += token_len + 1;
+ }
+
+ return -1;
}
-void http_sendFileNotFound(struct netconn *client)
+/**
+ * tokenize a buffer
+ */
+int http_tokenizeGetRequest(char *raw_buf, size_t raw_len)
{
- netconn_write(client, http_html_hdr_404, sizeof(http_html_hdr_404) - 1, NETCONN_NOCOPY);
+ size_t token = 0;
+
+ for(size_t i = 0; (i < raw_len) && raw_buf; i++)
+ {
+ if (raw_buf[i] == '&')
+ {
+ token++;
+ raw_buf[i] = '\0';
+ }
+
+ if (raw_buf[i] == '=')
+ raw_buf[i] = '\0';
+ }
+
+ return token + 1;
}
-void http_sendInternalErr(struct netconn *client)
+static char http_hexToAscii(char first, char second)
{
- netconn_write(client, http_html_hdr_500, sizeof(http_html_hdr_500) - 1, NETCONN_NOCOPY);
+ char hex[5], *stop;
+ hex[0] = '0';
+ hex[1] = 'x';
+ hex[2] = first;
+ hex[3] = second;
+ hex[4] = 0;
+ return strtol(hex, &stop, 16);
}
-static void get_fileName(const char *revc_buf, size_t recv_len, char *name, size_t len)
+void http_decodeUrl(const char *raw_buf, size_t raw_len, char *decodec_buf, size_t len)
{
- int i = 0;
- char *p = strstr(revc_buf, "GET");
- if (p)
+ ASSERT(decodec_buf);
+
+ char value;
+ memset(decodec_buf, 0, len);
+
+ for (size_t i = 0; i < raw_len; i++)
{
- //Find the end of the page request.
- char *stop = strstr(revc_buf, "HTTP");
- if (!stop)
- {
- LOG_ERR("Bad GET request\n");
- name[0] = '\0';
+ if (!len)
return;
- }
-
- //skip the "/" in get string request
- p += sizeof("GET") + 1;
- while (p != stop)
+ if (raw_buf[i] == '%')
{
- if ((size_t)i == len || (size_t)i >= recv_len)
+ if (i + 2 < raw_len)
{
- name[i] = '\0';
- break;
+ /* convert hex value after % */
+ value = http_hexToAscii(raw_buf[i + 1], raw_buf[i + 2]);
+ if (value)
+ {
+ *decodec_buf++ = value;
+ len--;
+ /* decoded two digit of hex value, go to next value*/
+ i += 2;
+ continue;
+ }
}
+ }
- name[i++] = *(p++);
+ /* Manage special case of '+', that it should be convert in space */
+ *decodec_buf++ = (raw_buf[i] == '+' ? ' ' : raw_buf[i]);
+ len--;
+ }
+}
+
+void http_getPageName(const char *recv_buf, size_t recv_len, char *page_name, size_t len)
+{
+ int i = 0;
+ bool str_ok = false;
+ const char *p = recv_buf;
+ if (p && (recv_len > sizeof("GET /")))
+ {
+ if (*p++ == 'G' && *p++ == 'E' && *p++ == 'T')
+ {
+ str_ok = true;
+ /* skip the space and "/" */
+ p += 2;
}
}
- //Trail white space in the string.
- while ( --i >= 0 )
- if (name[i] != ' ' && name[i] != '\t' && name[i] != '\n')
- break;
+ if (str_ok)
+ {
+ while ((size_t)i < recv_len)
+ {
+ char ch = *(p++);
+ if (ch == ' ' || ch == '\t' || ch == '\n')
+ break;
+ if((size_t)i == len - 1)
+ break;
+ page_name[i++] = ch;
+ }
+ }
- name[i + 1] = '\0';
+ page_name[i] = '\0';
}
INLINE const char *get_ext(const char *name)
return NULL;
}
+
+/**
+ * Send on \param client socket
+ * the 200 Ok http header
+ */
+void http_sendOk(struct netconn *client)
+{
+ netconn_write(client, http_html_hdr_200, sizeof(http_html_hdr_200) - 1, NETCONN_NOCOPY);
+}
+
+
+/**
+ * Send on \param client socket
+ * the 404 File not found http header
+ */
+void http_sendFileNotFound(struct netconn *client)
+{
+ netconn_write(client, http_html_hdr_404, sizeof(http_html_hdr_404) - 1, NETCONN_NOCOPY);
+}
+
+/**
+ * Send on \param client socket
+ * the 500 internal server error http header
+ */
+void http_sendInternalErr(struct netconn *client)
+{
+ netconn_write(client, http_html_hdr_500, sizeof(http_html_hdr_500) - 1, NETCONN_NOCOPY);
+}
+
static http_handler_t cgi_search(const char *name, HttpCGI *table)
{
if (!table)
int i = 0;
const char *ext = get_ext(name);
- LOG_INFO("EXT %s\n", ext);
+ LOG_INFO("EXT %s\n", ext ? "none" : ext);
while(table[i].name)
{
if (ext && table[i].type == CGI_MATCH_EXT)
if (!strcmp(table[i].name, ext))
break;
}
- else /* (table[i].type == CGI_MATCH_NAME) */
+ else if (table[i].type == CGI_MATCH_NAME)
{
LOG_INFO("Match all name %s\n", name);
+ if (strstr(name, table[i].name) != NULL)
+ break;
+ }
+ else /* (table[i].type == CGI_MATCH_WORD) */
+ {
+ LOG_INFO("Match all word %s\n", name);
if (!strcmp(table[i].name, name))
break;
}
static char req_string[80];
+/**
+ * Http polling function.
+ *
+ * Call this functions to process each client connections.
+ *
+ */
void http_poll(struct netconn *server)
{
struct netconn *client;
if (rx_buf)
{
memset(req_string, 0, sizeof(req_string));
- get_fileName(rx_buf, len, req_string, sizeof(req_string));
+ http_getPageName(rx_buf, len, req_string, sizeof(req_string));
LOG_INFO("Search %s\n", req_string);
if (req_string[0] == '\0')
netconn_delete(client);
}
+/**
+ * Init the http server.
+ *
+ * The simply http server call for each client request the default_callback function. The
+ * user should define this callback to manage the client request, i.e. reading site's page
+ * from SD card. The user can define the cgi_table, where associate one callback to the user string.
+ * In this way the user could filter some client request and redirect they to custom callback, i.e.
+ * the client could request status of the device only loading the particular page name.
+ *
+ * \param default_callback fuction that server call for all request, that does'nt match cgi table.
+ * \param table of callcack to call when client request a particular page.
+ */
void http_init(http_handler_t default_callback, struct HttpCGI *table)
{
ASSERT(default_callback);
projects / bertos.git / blobdiff