1 files changed, 8 insertions, 6 deletions

diff --git a/parsing.c b/parsing.c
index 332d61c..8e15e5a 100644
--- a/parsing.c
+++ b/parsing.c
@@ -3,141 +3,143 @@
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
 int next_char(FILE *f)
 {
         int c = fgetc(f);
         if (c=='\r') {
                 c = fgetc(f);
                 if (c!='\n') {
                         ungetc(c, f);
                         c = '\r';
                 }
         }
         return c;
 }
 
 void skip_line(FILE *f)
 {
         int c;
 
         while((c=next_char(f)) && c!='\n' && c!=EOF)
                 ;
 }
 
 int read_config_line(FILE *f, char *line, const char **value, int bufsize)
 {
         int i = 0, isname = 0;
 
         *value = NULL;
         while(i<bufsize-1) {
                 int c = next_char(f);
                 if (!isname && (c=='#' || c==';')) {
                         skip_line(f);
                         continue;
                 }
                 if (!isname && isspace(c))
                         continue;
 
                 if (c=='=' && !*value) {
                         line[i] = 0;
                         *value = &line[i+1];
                 } else if (c=='\n' && !isname) {
                         i = 0;
                         continue;
                 } else if (c=='\n' || c==EOF) {
                         line[i] = 0;
                         break;
                 } else {
                         line[i]=c;
                 }
                 isname = 1;
                 i++;
         }
         line[i+1] = 0;
         return i;
 }
 
 int cgit_read_config(const char *filename, configfn fn)
 {
-        int ret = 0, len;
+        static int nesting;
+        int len;
         char line[256];
         const char *value;
-        FILE *f = fopen(filename, "r");
+        FILE *f;
 
-        if (!f)
+        /* cancel the reading of yet another configfile after 16 invocations */
+        if (nesting++ > 16)
+                return -1;
+        if (!(f = fopen(filename, "r")))
                 return -1;
-
         while((len = read_config_line(f, line, &value, sizeof(line))) > 0)
                 (*fn)(line, value);
-
         fclose(f);
-        return ret;
+        return 0;
 }
 
 char *convert_query_hexchar(char *txt)
 {
         int d1, d2;
         if (strlen(txt) < 3) {
                 *txt = '\0';
                 return txt-1;
         }
         d1 = hextoint(*(txt+1));
         d2 = hextoint(*(txt+2));
         if (d1<0 || d2<0) {
                 strcpy(txt, txt+3);
                 return txt-1;
         } else {
                 *txt = d1 * 16 + d2;
                 strcpy(txt+1, txt+3);
                 return txt;
         }
 }
 
 int cgit_parse_query(char *txt, configfn fn)
 {
         char *t, *value = NULL, c;
 
         if (!txt)
                 return 0;
 
         t = txt = xstrdup(txt);
  
         while((c=*t) != '\0') {
                 if (c=='=') {
                         *t = '\0';
                         value = t+1;
                 } else if (c=='+') {
                         *t = ' ';
                 } else if (c=='%') {
                         t = convert_query_hexchar(t);
                 } else if (c=='&') {
                         *t = '\0';
                         (*fn)(txt, value);
                         txt = t+1;
                         value = NULL;
                 }
                 t++;
         }
         if (t!=txt)
                 (*fn)(txt, value);
         return 0;
 }
 
 char *substr(const char *head, const char *tail)
 {
         char *buf;
 
         buf = xmalloc(tail - head + 1);
         strncpy(buf, head, tail - head);
         buf[tail - head] = '\0';
         return buf;
 }
 
 struct commitinfo *cgit_parse_commit(struct commit *commit)
 {
         struct commitinfo *ret;