Avoid infinite loops when expanding variables

Author: N-Holzschuch

Blink/Info.plist

@@ -63,6 +63,10 @@
 	<true/>
 	<key>LSSupportsOpeningDocumentsInPlace</key>
 	<true/>
+	<key>NSBluetoothPeripheralUsageDescription</key>
+	<string>keyboard</string>
+	<key>NSSiriUsageDescription</key>
+	<string>storing commands</string>
 	<key>NSUserActivityTypes</key>
 	<array>
 		<string>com.blink.cmdline</string>
@@ -76,16 +80,18 @@
 	<true/>
 	<key>UILaunchStoryboardName</key>
 	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
 	<key>UIRequiredDeviceCapabilities</key>
 	<array>
 		<string>armv7</string>
 	</array>
 	<key>UISupportedInterfaceOrientations</key>
 	<array>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
 		<string>UIInterfaceOrientationPortraitUpsideDown</string>
 		<string>UIInterfaceOrientationPortrait</string>
-		<string>UIInterfaceOrientationLandscapeLeft</string>
-		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
 	<key>UISupportsDocumentBrowser</key>
 	<true/>

Blink/SmartKeys/SmartKeysController.m

@@ -153,6 +153,7 @@ - (void)viewDidLoad
   [self.allKeys addObjectsFromArray:AlternateKeys];
   [self.allKeys addObjectsFromArray:CursorKeys];
   [self.allKeys addObject:[[SmartKey alloc] initWithName:KbdEscKey symbol:UIKeyInputEscape]];
+  [super viewDidLoad];
 }
 
 - (void)invalidateTimer

Blink/TermController.h

@@ -61,5 +61,6 @@
 - (void)terminate;
 - (void)sigwinch;
 - (BOOL)executeCommand:(NSMutableArray*)listArgv;
+- (void)createPTY;
 
 @end

Sessions/MCPSession.m

@@ -133,7 +133,8 @@ - (char **) makeargs:(NSMutableArray*) listArgv argc:(int*) argc
     // Operations on individual arguments
     NSString *argument = [listArgv objectAtIndex:i];
     // 1b) expand environment variables, + "~" (not wildcards ? and *)
-    while ([argument containsString:@"$"]) {
+    bool stopParsing = false;
+    while (([argument containsString:@"$"]) && !stopParsing) {
       // It has environment variables inside. Work on them one by one.
       // position of first "$" sign:
       NSRange r1 = [argument rangeOfString:@"$"];
@@ -152,7 +153,7 @@ - (char **) makeargs:(NSMutableArray*) listArgv argc:(int*) argc
         NSString* replacement_string = [NSString stringWithCString:variable encoding:NSASCIIStringEncoding];
         variable_string = [[NSString stringWithCString:"$" encoding:NSASCIIStringEncoding] stringByAppendingString:variable_string];
         argument = [argument stringByReplacingOccurrencesOfString:variable_string withString:replacement_string];
-      }
+      } else stopParsing = true;
     }
     // Bash spec: only convert "~" if: at the beginning of argument, after a ":" or the first "="
     // ("=" scenario for export, but we use setenv, so no "=").
@@ -325,6 +326,7 @@ - (bool)executeCommand:(int)argc argv:(char **)argv {
       free(cmd);
       stdout = saved_out;
       stderr = saved_err;
+      stdin = _stream.in;
     }
   }
   return false; 
@@ -341,7 +343,7 @@ - (BOOL)executeCommand:(NSMutableArray*) listArgv {
 }
 
 // This is a superset of all commands available. We check at runtime whether they are actually available (using ios_executable)
-char* commandList[] = {"ls", "touch", "rm", "cp", "ln", "link", "mv", "mkdir", "chown", "chgrp", "chflags", "chmod", "du", "df", "chksum", "sum", "stat", "readlink", "compress", "uncompress", "gzip", "gunzip", "tar", "printenv", "pwd", "uname", "date", "env", "id", "groups", "whoami", "uptime", "w", "cat", "wc", "grep", "egrep", "fgrep", "curl", "python", "lua", "luac", "amstex", "cslatex", "csplain", "eplain", "etex", "jadetex", "latex", "mex", "mllatex", "mltex", "pdflatex", "pdftex", "pdfcslatex", "pdfcstex", "pdfcsplain", "pdfetex", "pdfjadetex", "pdfmex", "pdfxmltex", "texsis", "utf8mex", "xmltex", "lualatex", "luatex", "texlua", "texluac", "dviluatex", "dvilualatex", "bibtex", "setenv", "unsetenv", "cd", 
+char* commandList[] = {"ls", "touch", "rm", "cp", "ln", "link", "mv", "mkdir", "chown", "chgrp", "chflags", "chmod", "du", "df", "chksum", "sum", "stat", "readlink", "compress", "uncompress", "gzip", "gunzip", "tar", "printenv", "pwd", "uname", "date", "env", "id", "groups", "whoami", "uptime", "w", "cat", "wc", "grep", "egrep", "fgrep", "curl", "python", "lua", "luac", "amstex", "cslatex", "csplain", "eplain", "etex", "jadetex", "latex", "mex", "mllatex", "mltex", "pdflatex", "pdftex", "pdfcslatex", "pdfcstex", "pdfcsplain", "pdfetex", "pdfjadetex", "pdfmex", "pdfxmltex", "texsis", "utf8mex", "xmltex", "lualatex", "luatex", "texlua", "texluac", "dviluatex", "dvilualatex", "bibtex", "setenv", "unsetenv", "cd",
   NULL}; // must end with NULL pointer
 
 // Commands defined outside of ios_executable: