Introduced $ meta character in glob expressions

mongoose.1

@@ -40,6 +40,8 @@ Matches everything
 Matches everything but slash character, '/'
 .It ?
 Matches any character
+.It $
+Matches the end of the string
 .It |
 Matches if pattern on the left side or the right side matches. Pattern on the
 left side is matched first
@@ -66,7 +68,7 @@ utility.
 All files that fully match cgi_pattern are treated as CGI.
 Default pattern allows CGI files be
 anywhere. To restrict CGIs to certain directory, use e.g. "-C /cgi-bin/**.cgi".
-Default: "**.cgi|**.pl|**.php"
+Default: "**.cgi$|**.pl$|**.php$"
 .It Fl E Ar cgi_environment
 Extra environment variables to be passed to the CGI script in addition to
 standard ones. The list must be comma-separated list of X=Y pairs, like this:
@@ -90,7 +92,7 @@ Authorization realm. Default: "mydomain.com"
 .It Fl S Ar ssi_pattern
 All files that fully match ssi_pattern are treated as SSI.
 Unknown SSI directives are silently ignored. Currently, two SSI directives
-are supported, "include" and "exec".  Default: "**.shtml|**.shtm"
+are supported, "include" and "exec".  Default: "**.shtml$|**.shtm$"
 .It Fl a Ar access_log_file
 Access log file. Default: "", no logging is done.
 .It Fl d Ar enable_directory_listing

mongoose.c

@@ -410,13 +410,13 @@ enum {
 };
 
 static const char *config_options[] = {
-  "C", "cgi_pattern", "**.cgi|**.pl|**.php",
+  "C", "cgi_pattern", "**.cgi$|**.pl$|**.php$",
   "E", "cgi_environment", NULL,
   "G", "put_delete_passwords_file", NULL,
   "I", "cgi_interpreter", NULL,
   "P", "protect_uri", NULL,
   "R", "authentication_domain", "mydomain.com",
-  "S", "ssi_pattern", "**.shtml|**.shtm",
+  "S", "ssi_pattern", "**.shtml$|**.shtm$",
   "a", "access_log_file", NULL,
   "c", "ssl_chain_file", NULL,
   "d", "enable_directory_listing", "yes",
@@ -771,10 +771,13 @@ static int match_prefix(const char *pattern, int pattern_len, const char *str) {
         match_prefix(or_str + 1, (pattern + pattern_len) - (or_str + 1), str);
   }
 
-  i = j = res = 0;
+  i = j = 0;
+  res = -1;
   for (; i < pattern_len; i++, j++) {
     if (pattern[i] == '?' && str[j] != '\0') {
       continue;
+    } else if (pattern[i] == '$') {
+      return str[j] == '\0' ? j : -1;
     } else if (pattern[i] == '*') {
       i++;
       if (pattern[i] == '*') {
@@ -788,10 +791,10 @@ static int match_prefix(const char *pattern, int pattern_len, const char *str) {
       }
       do {
         res = match_prefix(pattern + i, pattern_len - i, str + j + len);
-      } while (res == 0 && len-- > 0);
-      return res == 0 ? 0 : j + res + len;
+      } while (res == -1 && len-- > 0);
+      return res == -1 ? -1 : j + res + len;
     } else if (pattern[i] != str[j]) {
-      return 0;
+      return -1;
     }
   }
   return j;

test/unit_test.c

@@ -2,7 +2,7 @@
 
 int main(void) {
   assert(match_prefix("/a/", 3, "/a/b/c") == 3);
-  assert(match_prefix("/a/", 3, "/ab/c") == 0);
+  assert(match_prefix("/a/", 3, "/ab/c") == -1);
   assert(match_prefix("/*/", 3, "/ab/c") == 4);
   assert(match_prefix("**", 2, "/a/b/c") == 6);
   assert(match_prefix("/*", 2, "/a/b/c") == 2);
@@ -12,8 +12,19 @@ int main(void) {
   assert(match_prefix("a|b|cd", 6, "cdef") == 2);
   assert(match_prefix("a|b|c?", 6, "cdef") == 2);
   assert(match_prefix("a|?|cd", 6, "cdef") == 1);
-  assert(match_prefix("/a/**.cgi", 9, "/foo/bar/x.cgi") == 0);
+  assert(match_prefix("/a/**.cgi", 9, "/foo/bar/x.cgi") == -1);
   assert(match_prefix("/a/**.cgi", 9, "/a/bar/x.cgi") == 12);
+  assert(match_prefix("**/", 3, "/a/b/c") == 5);
+  assert(match_prefix("**/$", 4, "/a/b/c") == -1);
+  assert(match_prefix("**/$", 4, "/a/b/") == 5);
+  assert(match_prefix("$", 1, "") == 0);
+  assert(match_prefix("$", 1, "x") == -1);
+  assert(match_prefix("*$", 2, "x") == 1);
+  assert(match_prefix("/$", 2, "/") == 1);
+  assert(match_prefix("*", 1, "/hello/") == 0);
+  assert(match_prefix("**.a$|**.b$", 11, "/a/b.b/") == -1);
+  assert(match_prefix("**.a$|**.b$", 11, "/a/b.b") == 6);
+  assert(match_prefix("**.a$|**.b$", 11, "/a/b.a") == 6);
 
   return 0;
 }