Code release

src/user.c

@@ -0,0 +1,89 @@
+#include "main.h"
+#include "session.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+long int find_user(char *uname) {
+  FILE *fptr = fopen(FILE_USER_LIST_NAME, "r");
+
+  if (fptr == NULL) {
+    perror(FILE_USER_LIST_NAME);
+    exit(9);
+  }
+
+  char *line = NULL;
+  size_t bsize = WSIZE;
+  char b_uname[32];
+  long int cur_pos = 0;
+  int lsize = 0;
+
+  if (!strncmp(uname, "exit", sizeof "exit")) {
+    return -2;
+  }
+
+  while (getline(&line, &bsize, fptr)) {
+    if (line[0] == '\b')
+      break;
+    sscanf(line, "%s", b_uname);
+    if (!strcmp(uname, b_uname)) {
+      line = NULL;
+      fclose(fptr);
+      return cur_pos;
+    } else {
+      cur_pos += lsize;
+      line = NULL;
+    }
+  }
+
+  fclose(fptr);
+  return -1;
+}
+
+/* returns 1 if success */
+int login(session *sess, char *pass) {
+  FILE *fptr = fopen(FILE_USER_LIST_NAME, "r");
+  fseek(fptr, sess->userpos, SEEK_SET);
+  int res = 0;
+
+  char *line = NULL;
+  size_t lsize = WSIZE;
+  char *pass_tok, *name_tok, *priv_tok;
+
+  getline(&line, &lsize, fptr);
+  name_tok = strtok(line, " ");
+  pass_tok = strtok(NULL, " ");
+
+  if (!strcmp(pass_tok, pass)) {
+    int n_len = pass_tok - name_tok - 1; /* exclude space */
+    sess->uname = malloc(n_len + 1);
+    strncpy(sess->uname, name_tok, n_len);
+    sess->uname[n_len] = 0;
+    priv_tok = strtok(NULL, " ");
+    sess->privileges = (char)atoi(priv_tok);
+    res = 1;
+  }
+  fclose(fptr);
+  return res;
+}
+
+// TODO: синхронизовать c C++
+/* returns 1 if session needs to be closed, 0 - in the opposite case */
+int process_error(session *sess) {
+  if (sess->state == ERR) {
+    switch (sess->reason) {
+    case NO_REASON:
+    case EXIT:
+      return 1;
+      break;
+    case LOGIN:
+      session_send_string(sess, "Can't find the user with such credentials\n");
+      sess->state = OP_LOGIN_USR;
+      sess->reason = NO_REASON;
+      session_send_string(sess, "login_again> ");
+      break;
+    }
+  }
+
+  return 0;
+}