7 files changed, 239 insertions, 0 deletions
diff --git a/src/include/array.h b/src/include/array.h
new file mode 100644
index 0000000..d3004e3
--- /dev/null
+++ b/src/include/array.h
@@ -0,0 +1,24 @@
+#ifndef ARRAY_H
+#define ARRAY_H
+
+#include <stdlib.h>
+#define DEFAULT_ARR_LEN 10
+
+typedef struct {
+  void **items;
+  size_t size;
+  size_t capacity;
+} array_t;
+
+array_t *init_array();
+
+void array_push(array_t *a, void *item);
+
+void *array_pop(array_t *a);
+
+void *array_del(array_t *a, unsigned int ind);
+
+void array_free(void *a, void (*freefunc)(void *));
+
+array_t *array_reverse(array_t *a);
+#endif
diff --git a/src/include/better_string.h b/src/include/better_string.h
new file mode 100644
index 0000000..41c0cfd
--- /dev/null
+++ b/src/include/better_string.h
@@ -0,0 +1,24 @@
+#ifndef STRING_H
+#define STRING_H
+
+#include <stdlib.h>
+#define DEFAULT_STR_SIZE 10
+
+typedef struct {
+  char *buf;
+  size_t len;
+  size_t size;
+} string_t;
+
+string_t *init_string(const char *source);
+
+void string_push(string_t *s, char c);
+
+void string_concat(string_t *s1, string_t *s2);
+
+void string_concat_const(string_t *s, const char *src);
+
+char string_pop(string_t *s);
+
+void string_free(void *s);
+#endif
diff --git a/src/include/hash_table.h b/src/include/hash_table.h
new file mode 100644
index 0000000..ea21e37
--- /dev/null
+++ b/src/include/hash_table.h
@@ -0,0 +1,43 @@
+#ifndef HASH_TABLE_H
+#define HASH_TABLE_H
+
+#include <stdlib.h>
+#define DEFAULT_HT_SIZE 500
+
+typedef struct PAIR_STRUCT {
+  char *key;
+  void *v;
+} pair_t;
+
+typedef struct NODE_STRUCT {
+  char *key;
+  void *v;
+  struct NODE_STRUCT *next;
+} node_t;
+
+typedef struct {
+  node_t *head;
+  node_t *tail;
+} sll_t;
+
+typedef struct {
+  sll_t **buckets;
+  size_t size;
+} ht_t;
+
+node_t *init_node(char *key, void *v);
+
+void sll_push(sll_t *sll, char *key, void *v);
+
+void sll_delete(sll_t *sll, char *key);
+
+sll_t *sll_free(void *x, void (*freefunc)(void *));
+
+void ht_insert(ht_t *ht, char *key, void *value);
+
+void ht_delete(ht_t *ht, char *key);
+
+void *ht_get(ht_t *ht, char *key);
+
+ht_t *init_ht(size_t size);
+#endif
diff --git a/src/include/helpers.h b/src/include/helpers.h
new file mode 100644
index 0000000..5d46909
--- /dev/null
+++ b/src/include/helpers.h
@@ -0,0 +1,17 @@
+#ifndef HELPERS_H
+#define HELPERS_H
+
+#include <stdlib.h>
+
+void die_lz(int code, const char *msg);
+
+void die(const char *msg);
+
+void *safe_calloc(unsigned int i, size_t size);
+
+void *safe_realloc(void *x, size_t size);
+
+void alloc_zero(void *ptr, size_t size);
+
+void nothing(void *);
+#endif
diff --git a/src/include/opcodes.h b/src/include/opcodes.h
new file mode 100644
index 0000000..ff8400f
--- /dev/null
+++ b/src/include/opcodes.h
@@ -0,0 +1,47 @@
+#ifndef OPCODES_H
+#define OPCODES_H
+
+typedef enum {
+  CO_NOP,
+  CO_JN, /* join */
+  CO_DM,
+  CO_PST, /* post */
+  CO_MSG,
+  CO_REG,
+  CO_NCK, /* nick */
+  CO_PNG, /* pong */
+  CO_LVE, /* leave */
+  CO_QT,  /* quit*/
+
+  CO_CLM, /* claim channel */
+  CO_DESC,  /* change description */
+  CO_TRSFR, /* ownership transfer of admin */
+  CO_KCK,   /* kick */
+  CO_BAN,
+  CO_KNGT, /* knight */
+  CO_DMT, /* demote */
+
+  CO_LOGS, /* allows users to download log file from date specified in unix time */
+
+  CO_UNRECOGNIZED
+} copcode_t;
+
+typedef enum {
+  SO_SUCCESS,
+  SO_FAIL_PARSE,
+  SO_FAIL_NOPERM,
+  SO_FAIL_USER_TAKEN,
+  SO_FAIL_RATE, /* rate limit */
+  SO_PNG, /* ping */
+  SO_BYE,
+} sopcode_t;
+
+char *decode_client_opcode(int op);
+
+char *decode_server_opcode(int op);
+
+int encode_client_opcode(char *c);
+
+int encode_server_opcode(char *c);
+
+#endif
diff --git a/src/include/protocol.h b/src/include/protocol.h
new file mode 100644
index 0000000..204a507
--- /dev/null
+++ b/src/include/protocol.h
@@ -0,0 +1,68 @@
+#ifndef PROTOCOL_H
+#define PROTOCOL_H
+
+#include <time.h>
+#include <stdbool.h>
+
+#include "array.h"
+#include "better_string.h"
+#include "hash_table.h"
+#include <openssl/sha.h>
+
+#define MAX_OP_LEN 10
+#define MAX_ARG_LEN 50
+#define MAX_ARGS 5
+#define MAX_BUFSIZE 4096
+#define DEFAULT_PORT 11111
+#define MAX_CONNECTIONS 32768
+#define DEFAULT_TIMEOUT 6000
+#define USERNAME_SIZE 30
+#define KEYLEN 512
+
+typedef struct {
+  string_t *nick;
+  bool is_guest;
+  int fd;
+
+  /* list of channels where user is in */
+  array_t *channels;
+  array_t *dms;
+  array_t *autojoin;
+  unsigned char passhash[SHA256_DIGEST_LENGTH];
+} user_t;
+
+typedef struct {
+  string_t *nick;
+  string_t *msg;
+  time_t time;
+} message_t;
+
+typedef struct {
+  array_t *messages;
+
+  user_t *admin;
+  array_t *mods;
+
+  bool registered_only;
+
+  bool invite_only;
+  array_t *allowed_users;
+
+  array_t *users;
+
+  string_t *chan_name;
+  string_t *desc;
+} channel_t;
+
+typedef struct {
+  user_t *user1;
+  user_t *user2;
+
+  array_t *messages;
+} dm_t;
+
+string_t *encode_chanstate(ht_t *chans);
+
+string_t *encode_usersstate(ht_t *u);
+
+#endif
diff --git a/src/include/tsv.h b/src/include/tsv.h
new file mode 100644
index 0000000..57bb70a
--- /dev/null
+++ b/src/include/tsv.h
@@ -0,0 +1,16 @@
+#ifndef TSV_H
+#define TSV_H
+
+#include "better_string.h"
+
+typedef struct {
+  char *source;
+  unsigned int i;
+  char c;
+} tsv_t;
+
+tsv_t *init_tsv(char *source);
+
+string_t *tsv_next(tsv_t *tsv);
+
+#endif