From 7525e8af775a1d039d08df6ba066fe83295c7193 Mon Sep 17 00:00:00 2001
From: 0xdeadbeer <kevin.jerebica@gmail.com>
Date: Wed, 4 Sep 2024 12:16:40 +0200
Subject: [PATCH] tmp: start working on parsing response messages

---
 parslib.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 parslib.h |  17 +++++++--
 2 files changed, 122 insertions(+), 5 deletions(-)

diff --git a/parslib.c b/parslib.c
index ac138de..e7e64b3 100644
--- a/parslib.c
+++ b/parslib.c
@@ -10,6 +10,42 @@ extern char *headers;
 static struct nod *method_tree = NULL;
 static struct nod *header_tree = NULL; 
 
+static int stoin(char *str, int len, int *out) {
+    int ret = 0; 
+    int place = 1; 
+    for (char *chr = str+len; chr >= str; chr--) {
+        if (chr == str) {
+            if (*ch == '+') {
+                goto _proceed;
+            }
+            if (*ch == '-') {
+                goto _proceed;
+            }
+        }
+        if (*chr >= '0' && *ch <= '9') {
+            goto _proceed;
+        }
+
+        return -1;
+
+_proceed:
+
+        if (*chr == '-') {
+            ret = -ret;
+            continue;
+        }
+        if (*chr == '+') {
+            continue;
+        }
+
+        int number = *chr-'0'; 
+        ret += number * place; 
+        place *= 10; 
+    }
+
+    *out = ret;
+}
+
 void printfpars(struct httpars *pars) {
     fprintf(stderr, "\tstats:\n"
                     "\t\tmethod\t: %d\n"
@@ -129,14 +165,84 @@ _loop:
     return 0;
 }
 
-int parstitle(char *offset, int len, struct httitle *titl) {
+int parestitl(char *offset, int len, struct httitleres *titl) {
+    int ret = 0; 
+    int diff = 0;
+    char *cursor = offset; 
+    char *cursor_lim = cursor+len; 
+
+    // ver 
+    char *ver_lim = strchr(cursor, ' ');
+    if (!ver_lim) {
+        return -1;
+    }
+    if (ver_lim > cursor_lim) {
+        return -1;
+    }
+
+    diff = ver_lim-cursor;
+    titl->ver.er = cursor;
+    titl->ver.len = diff;
+
+    cursor += diff;
+
+    // white space 
+_loop1:
+    if (cursor > cursor_lim) {
+        return -1;
+    }
+    if (*cursor == ' ') {
+        cursor++;
+        goto _loop1;
+    }
+
+    // code 
+    char *code_lim = strchr(cursor, ' ');
+    if (!code_lim) {
+        return -1;
+    }
+    if (code_lim > cursor_lim) {
+        return -1;
+    }
+
+    diff = code_lim-cursor;
+    int code;
+    ret = stoin(cursor, diff, &code);
+    if (ret < 0) {
+        return -1;
+    }
+
+    titl->code = code;
+    cursor += diff;
+
+    // white space 
+_loop2: 
+    if (cursor > cursor_lim) {
+        return -1;
+    }
+    if (*cursor == ' ') {
+        cursor++; 
+        goto _loop2;
+    }
+
+    // status text
+    diff = cursor_lim-cursor;
+    titl->stxt.er = cursor;
+    titl->stxt.len = diff;
+
+    cursor += diff;
+
+    return 0;
+}
+
+int pareqtitl(char *offset, int len, struct httitlereq *titl) {
     int ret = 0; 
     int diff = 0; 
     char *cursor = offset;
     char *cursor_lim = cursor+len;
 
     // method
-    char *method_lim = strchr(offset, ' ');
+    char *method_lim = strchr(cursor, ' ');
     if (!method_lim) {
         return -1;
     }
diff --git a/parslib.h b/parslib.h
index c041030..c2ef075 100644
--- a/parslib.h
+++ b/parslib.h
@@ -143,17 +143,28 @@ struct point {
     int len;
 };
 
-struct httitle {
+struct httitlereq {
     int method;
     struct point uri; 
     struct point ver;
 };
 
-struct httpars {
-    struct httitle titl;
+struct httitleres {
+    struct point ver; 
+    int code;
+    struct point stxt;
+};
+
+struct httpareq {
+    struct httitlereq titl;
     struct point hentries[header_count];
 };
 
+struct httpares {
+    struct httitleres titl; 
+    struct point hentries[header_count];
+}
+
 int initres(void);
 void fretres(void);
 int readlin(char **buff, char **buff_lim);