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annotate sqlickrypt.c @ 93:104409bf5f03

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rlgterm.js: improve registration failure messages. Provide more user-friendly explanations when registration fails.
author John "Elwin" Edwards <elwin@sdf.org>
date Wed, 11 Jul 2012 07:37:56 -0700
parents f275d816e857
children c08717cb7793
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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <string.h>
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4 #include <ctype.h>
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5 #include <sqlite3.h>
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6 #include <unistd.h>
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7 #include <crypt.h>
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8
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9 #define DATABASE "/dgldir/dgamelaunch.db"
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10 #define IBUFSIZE 200
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12 int check(char *uname, char *pw) {
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13 char *pwhash, *comphash;
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14 char *query = "SELECT password FROM dglusers WHERE username=?;";
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15 int status;
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16 sqlite3 *db;
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17 sqlite3_stmt *qstmt;
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19 status = sqlite3_open(DATABASE, &db);
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20 if (status) {
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21 sqlite3_close(db);
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22 return 3;
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23 }
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24 sqlite3_prepare_v2(db, query, -1, &qstmt, NULL);
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25 if (qstmt == NULL) {
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26 sqlite3_close(db);
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27 return 3;
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28 }
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29 status = sqlite3_bind_text(qstmt, 1, uname, -1, SQLITE_TRANSIENT);
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30 if (status) {
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31 sqlite3_finalize(qstmt);
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32 sqlite3_close(db);
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33 return 3;
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34 }
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35 status = sqlite3_step(qstmt);
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36 if (status != SQLITE_ROW) {
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37 sqlite3_finalize(qstmt);
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38 sqlite3_close(db);
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39 if (status == SQLITE_DONE)
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40 return 2; /* User not found */
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41 return 3;
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42 }
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43 pwhash = strdup((char *) sqlite3_column_text(qstmt, 0));
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44 /* Clean up */
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45 sqlite3_finalize(qstmt);
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46 sqlite3_close(db);
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47
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48 /* Check the password */
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49 comphash = crypt(pw, pwhash);
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50 if (!strcmp(pwhash, comphash))
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51 status = 0;
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52 else
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53 status = 1;
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54 free(pwhash);
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55 return status;
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56 }
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58 int insertuser(char *uname, char *pw, char *email) {
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59 char *checkquery = "SELECT * FROM dglusers WHERE username = ?;";
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60 char *addquery = "INSERT INTO dglusers (username, password, email) VALUES (?, ?, ?);";
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61 int status;
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62 sqlite3 *db;
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63 sqlite3_stmt *qstmt;
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64
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65 status = sqlite3_open(DATABASE, &db);
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66 if (status) {
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67 sqlite3_close(db);
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68 return 3;
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69 }
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70 /* Check for existing account in the same transaction with creating it. */
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71 status = sqlite3_exec(db, "BEGIN;", NULL, NULL, NULL);
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72 if (status) {
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73 sqlite3_close(db);
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74 return 3;
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75 }
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76 sqlite3_prepare_v2(db, checkquery, -1, &qstmt, NULL);
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77 if (qstmt == NULL) {
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78 sqlite3_close(db);
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79 return 3;
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