Work on request header parsing

nbproject/private/configurations.xml

@@ -13,6 +13,8 @@
         <gdb_interceptlist>
           <gdbinterceptoptions gdb_all="false" gdb_unhandled="true" gdb_unexpected="true"/>
         </gdb_interceptlist>
+        <gdb_signals>
+        </gdb_signals>
         <gdb_options>
           <DebugOptions>
           </DebugOptions>

src/http/http.c

@@ -3,6 +3,7 @@
 #include <stdint.h>
 #include <string.h>
 #include "http.h"
+#include "../main.h"
 
 /*
  * METHOD_GET, METHOD_POST, METHOD_HEAD, METHOD_PUT, 
@@ -32,7 +33,7 @@ http_method http_method_fromstring(const char* method) {
         METHOD_CONNECT};
     
     size_t count = sizeof(methods) / sizeof(http_method);
-    for(int i; i < count; i++) {
+    for(int i=0; i < count; i++) {
         if (strcmp(http_method_getstring(methods[i],NULL), method) == 0) {
             return methods[i];
         }
@@ -42,6 +43,9 @@ http_method http_method_fromstring(const char* method) {
 
 http_request_line *http_request_line_new(http_method method, const char* other) {
     http_request_line *req = calloc(1, sizeof(http_request_line));
+    if (req == NULL) {
+        fatal("calloc failed");
+    }
     req->method = method;
     if (req->method == METHOD_OTHER) {
         req->method_other = calloc(strlen(other)+1, sizeof(char));
@@ -59,6 +63,9 @@ void http_request_line_delete(http_request_line *req) {
 
 http_response_line *http_response_line_new(uint16_t code) {
     http_response_line *resp = calloc(1, sizeof(http_response_line));
+    if (resp == NULL) {
+        fatal("calloc failed");
+    }
     resp->code = code;
     resp->version = HTTP11;
     return resp;
@@ -117,7 +124,9 @@ void http_reponse_line_delete(http_response_line *resp) {
 
 http_header *http_header_new(const char* name) {
     http_header *header = calloc(1, sizeof(http_header));
-    
+    if (header == NULL) {
+        fatal("calloc failed");
+    }
     header->name = calloc(strlen(name)+1, sizeof(char));
     strcpy(header->name, name);
     
@@ -126,10 +135,16 @@ http_header *http_header_new(const char* name) {
 void http_header_append_content(http_header *header, const char* content) {
     if (header->content == NULL) {
         header->content = calloc(strlen(content)+1, sizeof(char));
+        if (header->content == NULL) {
+            fatal("calloc failed");
+        }
         strcpy(header->content, content);
     } else {
         uint32_t newlen = strlen(header->content) + strlen(content) + 1;
         header->content = realloc(header->content, newlen);
+        if (header->content == NULL) {
+            fatal("calloc failed");
+        }
         strcat(header->content, content);
     }
 }
@@ -141,13 +156,20 @@ void http_header_delete(http_header *header) {
 
 http_request *http_request_new() {
     http_request *req = calloc(1, sizeof(http_request));
+    if (req == NULL) {
+        fatal("calloc failed");
+    }
     req->header_count = 0;
     req->body = NULL;
+    req->parsestatus = PARSE_REQUESTLINE;
     return req;
 }
 void http_request_add_header(http_request *req, http_header *header) {
     req->header_count++;
     req->headers = realloc(req->headers, req->header_count * sizeof(http_header*));
+    if (req->headers == NULL) {
+        fatal("calloc failed");
+    }
     req->headers[req->header_count-1] = header;
 }
 void http_request_apppend_body(http_request *req, const char* body) {
@@ -157,6 +179,9 @@ void http_request_apppend_body(http_request *req, const char* body) {
     }
     bodylen += strlen(body) + 1;
     req->body = realloc(req->body, bodylen * sizeof(char));
+    if (req->body == NULL) {
+        fatal("calloc failed");
+    }
     strcat(req->body, body);
 }
 void http_request_delete(http_request *req) {

src/http/http.h

@@ -13,7 +13,6 @@ extern "C" {
 #endif
     
 #include <stdint.h>
-#include "request.h"
 
     typedef enum http_method {
         METHOD_GET, METHOD_POST, METHOD_HEAD, METHOD_PUT, 
@@ -43,13 +42,19 @@ extern "C" {
         char* content;
     } http_header;
     
+    typedef enum http_request_parsestatus {
+        PARSE_REQUESTLINE, PARSE_HEADERS, PARSE_BODY, PARSE_DONE, PARSE_FAIL
+    } http_request_parsestatus;
+    
     typedef struct http_request {
         http_request_line *req;
+        http_request_parsestatus parsestatus;
         http_header **headers;
         uint32_t header_count;
         char *body;
     } http_request;
     
+    
     char* http_method_getstring(http_method method, char* method_other);
     http_method http_method_fromstring(const char* method);
     

src/http/request.c

@@ -1,6 +1,66 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <strings.h>
+#include "../main.h"
 #include "http.h"
 
+char* parse_request(http_request *req, char *input) {
+    size_t line_count;
+    char** lines = str_splitlines(input, &line_count);
     
+    switch(req->parsestatus) {
+        case PARSE_REQUESTLINE:
+            if (line_count == 0) {
+                break;
+            }
+            
+            char* requestStr = lines[0];
+            
+            char methodStr[20] = {0};
+            char uriStr[1024] = {0};
+            char versionStr[16] = {0};
+            
+            int count = sscanf(requestStr, "%19s%*[ \t]%1023s%*[ \t]%15s", methodStr, uriStr, versionStr);
+            if (count < 3) {
+                req->parsestatus = PARSE_FAIL;
+                break;
+            }
+            
+            http_method method = http_method_fromstring(methodStr);
+            if (method == METHOD_INVALID) {
+                req->parsestatus = PARSE_FAIL;
+                break;
+            }
+            
+            http_version version;
+            if (strcasecmp(versionStr, "HTTP/1.0") == 0) { version = HTTP10; }
+            if (strcasecmp(versionStr, "HTTP/1.1") == 0) { version = HTTP11; }
+            
+            http_request_line *request_line = http_request_line_new(method, NULL);
+            request_line->version = version;
+            request_line->uri = calloc(strlen(uriStr)+1, sizeof(char));
+            if (request_line->uri == NULL) {
+                fatal("calloc failed");
+            }
+            strcpy(request_line->uri, uriStr);
+            req->req = request_line;
+            req->parsestatus = PARSE_HEADERS;
+            
+            break;
+        case PARSE_HEADERS:
+            break;
+        case PARSE_BODY:
+            break;
+        case PARSE_DONE:
+        case PARSE_FAIL:
+            break;
+    }
+    
+    for(size_t i=0; i < line_count; i++) {
+        free(lines[i]);
+        free(lines);
+    }
+    
+    return NULL;
+}

src/http/request.h

@@ -12,9 +12,10 @@
 extern "C" {
 #endif
 
+#include "../ut/utstring.h"
 #include "http.h"
     
-    
+    char* parse_request(http_request *req, char *input);
 
 
 #ifdef	__cplusplus

src/main.c

@@ -12,16 +12,26 @@
 #include <strings.h>
 
 #include "ut/utlist.h"
+#include "ut/utarray.h"
 #include "main.h"
 #include "socket.h"
+#include "http/http.h"
+#include "http/request.h"
 
 int serverfd = 0;
+char* teststr = "GET /testing/123 HTTP/1.1\r\n";
 
 /*
  * 
  */
 int main(int argc, char** argv) {
+    /*char *test = calloc(strlen(teststr)+1, sizeof(char));
+    strcpy(test, teststr);
     
+    http_request *req = http_request_new();
+    parse_request(req, test);
+    
+    return 0;*/
     skt_elem *connections = NULL;
     
     serverfd = svr_create();
@@ -38,6 +48,7 @@ int main(int argc, char** argv) {
             if (info != NULL) {
                 skt_elem* newconn = calloc(1, sizeof(skt_elem));
                 newconn->info = info;
+                newconn->current_request = http_request_new();
                 LL_APPEND(connections, newconn);
             }
         }
@@ -90,6 +101,9 @@ int main(int argc, char** argv) {
             if (elem->info->closed) {
                 LL_DELETE(connections, elem);
                 skt_delete(elem->info);
+                if (elem->current_request != NULL) {
+                    http_request_delete(elem->current_request);
+                }
                 free(elem);
             }
         }
@@ -125,3 +139,45 @@ void info(char* msg, ...) {
     fputc('\n', stdout);
     va_end(va);
 }
+
+char** str_splitlines(char *str, size_t *line_count) {
+    char **result;
+    *line_count = 0;
+    char *tmp = str;
+    
+    while(*tmp) {
+        if (*tmp == '\n') {
+            (*line_count)++;
+        }
+        tmp++;
+    }
+    if (*line_count == 0) {
+        result = calloc(1, sizeof(char*));
+        result[0] = calloc(strlen(str), sizeof(char));
+        strcpy(result[0], str);
+        return result;
+    }
+    result = calloc(*line_count, sizeof(char*));
+    if (result == NULL) {
+        fatal("calloc failed");
+    }
+    
+    size_t i=0, linelen = 0;
+    char *line = strtok(str, "\n");
+    while(line) {
+        linelen = strlen(line);
+        result[i] = calloc(linelen+1, sizeof(char));
+        if (result[i] == NULL) {
+            fatal("calloc failed");
+        }
+        strcpy(result[i], line);
+        if (result[i][linelen-1] == '\r') {
+            result[i][linelen-1] = '\0';
+            result[i] = realloc(result[i], linelen);
+        }
+        line = strtok(NULL, "\n");
+        i++;
+    }
+    
+    return result;
+}

src/main.h

@@ -20,6 +20,8 @@ void fatal(char* msg);
 void warning(char* msg, bool showPError);
 void info(char* msg, ...);
 
+char** str_splitlines(char *str, size_t *line_count);
+
 
 #ifdef	__cplusplus
 }

src/socket.h

@@ -17,6 +17,7 @@ extern "C" {
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <time.h>
+#include "http/http.h"
 #include "ut/utstring.h"
     
     typedef struct skt_info skt_info;
@@ -36,6 +37,7 @@ extern "C" {
     
     typedef struct skt_elem {
         skt_info* info;
+        http_request *current_request;
         struct skt_elem *next;
     } skt_elem;
     

src/ut/utarray.h

@@ -218,7 +218,12 @@ typedef struct {
 /* last we pre-define a few icd for common utarrays of ints and strings */
 static void utarray_str_cpy(void *dst, const void *src) {
   char **_src = (char**)src, **_dst = (char**)dst;
-  *_dst = (*_src == NULL) ? NULL : strdup(*_src);
+  if (*_src != NULL) {
+      *_dst = calloc(strlen(*_src)+1, sizeof(char));
+      if (*_dst != NULL) {
+          strcpy(*_dst, *_src);
+      }
+  }
 }
 static void utarray_str_dtor(void *elt) {
   char **eltc = (char**)elt;