1 files changed, 109 insertions, 4 deletions

diff --git a/src/config.c b/src/config.c
index 616fabf..268198d 100644
--- a/src/config.c
+++ b/src/config.c
@@ -53,6 +53,7 @@ typedef enum {
 		TOK_BlockUser,
 		TOK_AllowSubject,
 		TOK_BlockSubject,
+		TOK_SubjectMacro,
 		TOK_VarHostname,
 		TOK_VarPort,
 		TOK_VarUsername,
@@ -77,10 +78,17 @@ typedef struct Command
     Token	token;
     } Command;
 
+typedef struct
+    {
+    char	*macro;
+    char	*expansion;
+    } Macro;
+
 
 /* ---------------------------------------- GLOBALS
 */
 static DString	error;
+
 static char	*hostname=NULL;
 static char	*username=NULL;
 static char	*password=NULL;
@@ -93,6 +101,9 @@ static int	testmode=FALSE;
 static int	blockhtml=FALSE;
 static int	verbose=TRUE;
 
+static int	no_macro=0;
+static Macro	*macro=NULL;
+
 
 /* ---------------------------------------- COMMAND TABLE
 */
@@ -110,6 +121,7 @@ static const Command cmd_table[]=
 	    {"block_user",	TOK_BlockUser},
 	    {"allow_subject",	TOK_AllowSubject},
 	    {"block_subject",	TOK_BlockSubject},
+	    {"subject_macro",	TOK_SubjectMacro},
 
 	    /* Variables
 	    */
@@ -143,6 +155,48 @@ static const Command cmd_table[]=
 static Token	GetToken(FILE *fp, DString *ret);
 
 
+/* ---------------------------------------- COMMAND HANDLER UTILS
+*/
+static DString	ExpandRE(DString re)
+{
+    DString new;
+    Macro *m;
+    char *p;
+    int f;
+
+    new=DSInit();
+
+    p=re->text;
+
+    while(*p)
+    {
+	m=NULL;
+
+    	for(f=0;f<no_macro && !m;f++)
+	{
+	    if (strncmp(p,macro[f].macro,strlen(macro[f].macro))==0)
+	    {
+	    	m=macro+f;
+	    }
+	}
+
+	if (!m)
+	{
+	    DSAddChar(new,*p);
+	    p++;
+	}
+	else
+	{
+	    DSAddCP(new,m->expansion);
+	    p+=strlen(m->macro);
+	}
+    }
+
+    DSFree(re);
+    return new;
+}
+
+
 /* ---------------------------------------- COMMAND HANDLERS
 */
 static int DoSet(FILE *fp)
@@ -252,7 +306,6 @@ static int DoDomain(FILE *fp)
 {
     DString ds;
     Token tok;
-    int status=TRUE;
     Domain *domain;
     RE_Expression re;
 
@@ -327,6 +380,8 @@ static int DoDomain(FILE *fp)
 	    case TOK_AllowSubject:
 		GetToken(fp,&ds);
 
+		ds=ExpandRE(ds);
+
 		if (!(re=RECompile(ds->text)))
 		{
 		    DSAddCP(error,"Bad regular expression: ");
@@ -341,6 +396,8 @@ static int DoDomain(FILE *fp)
 	    case TOK_BlockSubject:
 		GetToken(fp,&ds);
 
+		ds=ExpandRE(ds);
+
 		if (!(re=RECompile(ds->text)))
 		{
 		    DSAddCP(error,"Bad regular expression: ");
@@ -371,7 +428,6 @@ static int DoTrustedUsers(FILE *fp)
 {
     DString ds;
     Token tok;
-    int status=TRUE;
 
     ds=DSInit();
 
@@ -406,7 +462,6 @@ static int DoTrustedDomains(FILE *fp)
 {
     DString ds;
     Token tok;
-    int status=TRUE;
 
     ds=DSInit();
 
@@ -433,6 +488,42 @@ static int DoTrustedDomains(FILE *fp)
 }
 
 
+static int DoSubjectMacro(FILE *fp)
+{
+    DString arg[2];
+    int f;
+
+    for(f=0;f<2;f++)
+    {
+    	arg[f]=DSInit();
+
+	if (GetToken(fp,&arg[f])==TOK_EOF)
+	{
+	    DSAddCP(error,"Unexpected EOF in subject_macro");
+	    return FALSE;
+	}
+    }
+
+    if (arg[0]->len==0 || arg[1]->len==0)
+    {
+	DSAddCP(error,"Can't use zero length strings in subject_macro");
+	return FALSE;
+    }
+
+    no_macro++;
+
+    macro=Realloc(macro,sizeof *macro * no_macro);
+
+    macro[no_macro-1].macro=CopyStr(arg[0]->text);
+    macro[no_macro-1].expansion=CopyStr(arg[1]->text);
+
+    for(f=0;f<2;f++)
+    	DSFree(arg[f]);
+
+    return TRUE;
+}
+
+
 /* ---------------------------------------- PRVIVATE FUNCTIONS
 */
 static int Getc(FILE *fp)
@@ -570,7 +661,6 @@ static int Parse(FILE *fp)
 {
     DString txt;
     Token tok;
-    char *p;
 
     txt=DSInit();
 
@@ -600,6 +690,11 @@ static int Parse(FILE *fp)
 		    ok=FALSE;
 		break;
 
+	    case TOK_SubjectMacro:
+		if (!DoSubjectMacro(fp))
+		    ok=FALSE;
+		break;
+
 	    case TOK_Expression:
 		DSAddCP(error,"Unknown command in config file: ");
 		DSAddDS(error,txt);
@@ -725,6 +820,16 @@ int ConfigInt(ConfigIntVar var)
 
 void ConfigClose(void)
 {
+    int f;
+
+    for(f=0;f<no_macro;f++)
+    {
+    	free(macro[f].macro);
+    	free(macro[f].expansion);
+    }
+    
+    free(macro);
+
     DSFree(error);
     free(hostname);
     free(username);