1 files changed, 95 insertions, 0 deletions
diff --git a/usr.sbin/ctm/ctm/ctm_input.c b/usr.sbin/ctm/ctm/ctm_input.c
new file mode 100644
index 0000000..2f6265f
--- /dev/null
+++ b/usr.sbin/ctm/ctm/ctm_input.c
@@ -0,0 +1,95 @@
+#include "ctm.h"
+
+/*---------------------------------------------------------------------------*/
+char *
+String(char *s)
+{
+    char *p = malloc(strlen(s) + 1);
+    strcpy(p,s);
+    return p;
+}
+/*---------------------------------------------------------------------------*/
+void
+Fatal_(int ln, char *fn, char *kind)
+{
+    if(Verbose > 2)
+	fprintf(stderr,"Fatal error. (%s:%d)\n",fn,ln);
+    fprintf(stderr,"%s Fatal error: %s\n",FileName, kind);
+}
+#define Fatal(foo) Fatal_(__LINE__,__FILE__,foo)
+#define Assert() Fatal_(__LINE__,__FILE__,"Assert failed.")
+
+/*---------------------------------------------------------------------------*/
+/* get next field, check that the terminating whitespace is what we expect */
+u_char *
+Ffield(FILE *fd, MD5_CTX *ctx,u_char term)
+{
+    static u_char buf[BUFSIZ];
+    int i,l;
+
+    for(l=0;;) {
+	if((i=getc(fd)) == EOF) {
+	    Fatal("Truncated patch.");
+	    return 0;
+	}
+	buf[l++] = i;
+	if(isspace(i))
+	    break;
+	if(l >= sizeof buf) {
+	    Fatal("Corrupt patch.");
+	    printf("Token is too long.\n");
+	    return 0;
+	}
+    }
+    buf[l] = '\0';
+    MD5Update(ctx,buf,l);
+    if(buf[l-1] != term) {
+        Fatal("Corrupt patch.");
+	fprintf(stderr,"Expected \"%s\" but didn't find it.\n",
+	    term == '\n' ? "\\n" : " ");
+	return 0;
+    }
+    buf[--l] = '\0';
+    return buf;
+}
+
+int
+Fbytecnt(FILE *fd, MD5_CTX *ctx, u_char term)
+{
+    u_char *p,*q;
+    int u_chars;
+
+    p = Ffield(fd,ctx,term);
+    if(!p) return -1;
+    for(q=p;*q;q++)
+	if(!isdigit(*q)) {
+	    Fatal("Bytecount contains non-digit.");
+	    return -1;
+	}
+    u_chars=atoi(p);
+    if(u_chars > MAXSIZE) {
+	Fatal("Bytecount too large.");
+	return -1;
+    }
+    return u_chars;
+}
+
+u_char *
+Fdata(FILE *fd, int u_chars, MD5_CTX *ctx)
+{
+    u_char *p = Malloc(u_chars+1);
+
+    if(u_chars+1 != fread(p,1,u_chars+1,fd)) {
+	Fatal("Truncated patch.");
+	return 0;
+    }
+    MD5Update(ctx,p,u_chars+1);
+    if(p[u_chars] != '\n') {
+	if(Verbose > 3)
+	    printf("FileData wasn't followed by a newline.\n");
+        Fatal("Corrupt patch.");
+	return 0;
+    }
+    p[u_chars] = '\0';
+    return p;
+}