first commit

2025-06-07 01:59:34 -04:00
commit 388ac241f0
3558 changed files with 9116289 additions and 0 deletions
--- a/CS4210/cs4210/proj1/src/common/http.c
+++ b/CS4210/cs4210/proj1/src/common/http.c
@@ -0,0 +1,152 @@
+#include <stdlib.h>
+
+#include "debug.h"
+#include "http.h"
+#include "util.h"
+
+/* The length of the buffer to read the stuff from the socket into. */
+#define BUFFER_LENGTH 256
+
+char* http_read_header(socket_t csocket)
+{
+  char* result = NULL;
+  char buffer[BUFFER_LENGTH];
+  int bytes_received = 0;
+
+  DEBUG_PRINTF(("[HTTP] Reading header.\n"));
+  do
+    {
+      bytes_received = recv(csocket, buffer, BUFFER_LENGTH - 1, 0);
+      if (bytes_received > 0)
+        {
+          char* substr = NULL;
+
+          buffer[bytes_received] = '\0';
+
+          /* Append buffer to result: */
+          result = strcatd(result, buffer);
+
+          /* See if result now has two CRLFs in a row, to indicate the
+             end of the header: */
+          substr = strstr(result, "\r\n\r\n");
+          if (substr)
+            {
+              substr[4] = '\0';
+              break;
+            }
+        }
+    } while (bytes_received > 0);
+
+  DEBUG_PRINTF(("[HTTP] Got header:\n%s\n[HTTP] End header.\n", result));
+
+  return result;
+}
+
+char* http_get_requesturi(const char* header)
+{
+  char* start = ((char*) strchr(header, ' ')) + 1;
+  if (start == NULL)
+    {
+      return NULL;
+    }
+  else
+    {
+      const char* stop = strchr(start, ' ');
+      if (stop == NULL)
+        {
+          return NULL;
+        }
+      else
+        {
+          /* Count the length of the request: */
+          char* ptr = NULL;
+          size_t count = 0;
+          for (ptr = start; ptr != stop; ptr++)
+            {
+              count ++;
+            }
+
+          return strncatd(NULL, start, count);
+        }
+    }
+}
+
+const char* http_get_method(const char* header)
+{
+  /* If header starts with GET, then we have a GET request. */
+  if (strstr(header, HTTP_METHOD_GET) == header)
+    {
+      return HTTP_METHOD_GET;
+    }
+  else
+    {
+      return NULL;
+    }
+}
+
+void http_send_canned_response(socket_t socket, int status)
+{
+  static const char* html1 = "<html>HTTP Status code ";
+  static const char* html2 = "</html>";
+  
+  char buffer[8];
+  sprintf(buffer, "%d", status);
+
+  /* Send the appropriate header: */
+  http_send_header(socket, status);
+
+  /* Send some HTML: */
+  net_send_string(socket, html1, strlen(html1));
+  net_send_string(socket, buffer, strlen(buffer));
+  net_send_string(socket, html2, strlen(html2));
+}
+
+void http_send_header(socket_t socket, int status)
+{
+  char buffer[32];
+  char* header = NULL;
+
+  /*
+    static struct utsname *our_name = NULL;
+    if (uname(our_name))
+    {
+    return NULL;
+    }
+    our_name->nodename
+  */
+
+  /* Make status line: */
+  sprintf(buffer, "HTTP/1.1 %d %d\r\n", status, status);
+  header = strcatd(header, buffer);
+
+  /* Add various other headers: */
+  header = strcatd(header, "Content-Type: text/html\r\n");
+  header = strcatd(header, "Server: CS4210P1/vlad,omar\r\n");
+  header = strcatd(header, "Connection: Close\r\n");
+  header = strcatd(header, "\r\n");
+
+  net_send_string(socket, header, strlen(header));
+
+  free(header);
+}
+
+void http_send_text_file(socket_t socket, FILE* f)
+{
+  char buffer[BUFFER_LENGTH];
+  size_t bytes_read = 0;
+
+  while (!feof(f))
+    {
+      bytes_read = fread(buffer, sizeof(char), BUFFER_LENGTH - 1, f);
+      buffer[bytes_read] = '\0';
+
+      if (bytes_read > 0)
+        {
+          net_send_string(socket, buffer, bytes_read);
+        }
+      else
+        {
+          break;
+        }
+    }
+}