commit 3c19febb014ddc7d9afa1b517c108da4b3fda5dc
from: Omar Polo <op@omarpolo.com>
date: Fri Nov 06 13:24:25 2020 UTC

ensure the requested protocol is “gemini”

…and not something else that happens to be 6-bytes long.

commit - e8cac16e03c5b86eebd6e50b267a3f0479bf3a81
commit + 3c19febb014ddc7d9afa1b517c108da4b3fda5dc
blob - d54dc62f3b6ccded34abc27df946988df324e38c
blob + 2f786bce62e15bbbebfdde9ea693ba0ef1964fd0
--- ChangeLog
+++ ChangeLog
@@ -1,3 +1,8 @@
+2020-11-06  Omar Polo  <op@omarpolo.com>
+
+	* gmid.c (url_after_proto): ensure that the requested protocol is
+	“gemini” and not something else that’s long 6 bytes.
+
 2020-11-06  Omar Polo  <op@venera>
 
 	* gmid.1: added option to log to a file
blob - cda5b72ba0095337cbedd0d7bbeac93cbb45f206
blob + c8348a0fa50bb6a6a3c9f05881989b5b30c17cf5
--- gmid.c
+++ gmid.c
@@ -141,17 +141,18 @@ url_after_proto(char *url)
 	char *s;
 	const char *proto = "gemini";
 	const char *marker = "://";
+	size_t i;
 
+	/* a relative URL */
 	if ((s = strstr(url, marker)) == NULL)
 		return url;
 
-	/* not a gemini:// URL */
-
-	if (s - strlen(proto) < url)
+	if (s - strlen(proto) != url)
 		return NULL;
-	/* TODO: */
-	/* if (strcmp(s - strlen(proto), proto)) */
-	/* 	return NULL; */
+
+	for (i = 0; proto[i] != '\0'; ++i)
+		if (url[i] != proto[i])
+			return NULL;
 
 	/* a valid gemini:// URL */
 	return s + strlen(marker);