Initial - added better mleaderboard query

5 years ago · 34efe6ac4a
6 changed files with 143 additions and 0 deletions
--- a/main.c
+++ b/main.c
@ -0,0 +1,111 @@
				@@ -0,0 +1,111 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <sqlite3.h>
+
+typedef enum {
+    MAP,
+    PLAYER,
+    OVERVIEW,
+    NONE
+} Querytype;
+
+inline char *get_filename(const char c, Querytype *q) {
+    char *qout; 
+    switch(c) {
+        default:
+            qout = "queries/mranks.sql";
+            *q    = OVERVIEW;
+            break;
+        case 'm':
+            qout = "queries/mleaderboard-ojoin.sql";
+            *q    = MAP;
+            break;
+        case 'p':
+            qout = "queries/rplayers.sql";
+            *q    = PLAYER;
+            break;
+        case 't':
+            qout = "queries/test.txt";
+            *q    = NONE;
+            break;
+    }
+    return qout;
+}
+
+bool executequery(const char *sql, const char *p,  int tbl) {
+    sqlite3 *db;
+    char    *error;
+    int con = sqlite3_open("db/cts.db", &db);
+    if (con != SQLITE_OK) {
+        fprintf(stderr, "Can not open database: %s\n", sqlite3_errmsg(db));
+        return false;
+    }
+    sqlite3_stmt *s;
+    // prepare sql to s, reading until null character.
+    con = sqlite3_prepare_v2(db, sql, -1, &s, NULL);
+    if (con != SQLITE_OK) {
+        fprintf(stderr, "Could not prepare SQL statement: %s\n", sqlite3_errmsg(db));
+        return false;
+    }
+    // bind parameter with a string length that is the # of bytes to null char.
+    con = sqlite3_bind_text(s, 1, p, -1, NULL);
+    int e;
+    unsigned int cc, i;
+    while ((e = sqlite3_step(s)) == SQLITE_ROW) {
+        cc = sqlite3_column_count(s);
+        for (i = 0; i < cc; i++) {
+            printf("%s, ", sqlite3_column_text(s, i));
+        }
+        printf("\n");
+    }
+    sqlite3_finalize(s);
+    sqlite3_close(db);
+    return true;
+}
+
+// both allocates and frees memory used up by the string..
+// containing the data from query files.
+void getquery(const char *qs) {
+    char *qf, *qp;
+    Querytype  qt;
+    char *fname = get_filename(qs[0], &qt);
+    if (fname != NULL) { 
+        FILE *f = fopen(fname, "r");
+        if (f != NULL && qf != NULL) {
+            // change from fseek/SEEK_END when sql queries are >2 GB in size.
+            fseek(f, 0, SEEK_END);         // go to the end of file
+            unsigned int size = ftell(f);
+            qf = malloc(size);
+            if (qf != NULL) {
+                fseek(f, 0, SEEK_SET);     // go to the start of file
+                fread(qf, sizeof(char), size, f);
+            }
+        }
+    }
+    qp = strchr(qs, '=') + 1;              // increment to exclude '='
+    printf("%s\n", qf);
+    executequery(qf, qp, qt);
+    free(qf);
+}
+
+void html(void) {
+    const char *html_top = "Content-Type: text/html\n\n\
+              <html><head><meta content=\"text/html; charset=UTF-8\" />\
+              <link rel=\"stylesheet\" type=\"text/css\" href=\"page.css\">\
+              <title>/v/ - Xonotic</title>\
+              <p class='hidden'>:-) / nice one<br></p>";
+    const char *html_bot = "<br><br><p classname='footer'>Pages under construction.<br>\
+              Service may sporadically become unavailable.<br>\
+              In-game database is not directly synced with this web server.\
+              </p>\
+              </body></html>";
+   getquery(getenv("QUERY_STRING"));
+   printf("%s %s", html_top, html_bot);
+   return;
+}
+
+int main(void) {
+    getquery("map=pornstar-kaine");
+}
--- a/queries/mleaderboard-ojoin.sql
+++ b/queries/mleaderboard-ojoin.sql
@ -0,0 +1,5 @@
				@@ -0,0 +1,5 @@
+select trank, tvalue, ifnull(alias, "Unregistered Player")
+from Cts_times, Cts_ranks
+left join Id2alias
+    on idvalue = cryptokey
+where trank = idrank and Cts_times.mapid = Cts_ranks.mapid and Cts_times.mapid = ?
--- a/queries/mleaderboard.sql
+++ b/queries/mleaderboard.sql
@ -0,0 +1,8 @@
				@@ -0,0 +1,8 @@
+select trank, idvalue, tvalue
+from Cts_times, Cts_ranks
+where trank = idrank and Cts_times.mapid = Cts_ranks.mapid and Cts_times.mapid = ?
+order by trank
+
+-- get full leaderboard of the map
+-- aliases are not included because
+-- not ever player has a registered alias.
--- a/queries/mplayers.sql
+++ b/queries/mplayers.sql
@ -0,0 +1,7 @@
				@@ -0,0 +1,7 @@
+select idrank, idvalue, alias
+from Cts_ranks, Id2alias
+where idvalue = cryptokey and mapid = ?
+order by idrank
+
+-- get registered/aliased players who have played on 
+-- the specified map.
--- a/queries/mranks.sql
+++ b/queries/mranks.sql
@ -0,0 +1,8 @@
				@@ -0,0 +1,8 @@
+select Cts_ranks.mapid, max(trank), min(tvalue), alias
+from Cts_ranks, Cts_times, Id2alias
+where Cts_ranks.mapid = Cts_times.mapid 
+    and tvalue != 0 
+    and cryptokey = idvalue 
+    and idrank = 1
+group by Cts_ranks.mapid
+order by max(trank);
--- a/queries/rplayers.sql
+++ b/queries/rplayers.sql
@ -0,0 +1,4 @@
				@@ -0,0 +1,4 @@
+select alias, mapid, idrank
+from Cts_ranks, Id2alias
+where idvalue = cryptokey and cryptokey = ?
+order by idrank