Always use getopt with CGI, never use it for anything else

1 files changed, 166 insertions, 0 deletions

diff --git a/sapi/cgi/getopt.c b/sapi/cgi/getopt.c
new file mode 100644
index 0000000000..e34356a6b0
--- /dev/null
+++ b/sapi/cgi/getopt.c
@@ -0,0 +1,166 @@
+/* Borrowed from Apache NT Port */
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <stdlib.h>
+#include "php_getopt.h"
+#define OPTERRCOLON (1)
+#define OPTERRNF (2)
+#define OPTERRARG (3)
+
+
+PHPAPI char *ap_php_optarg;
+PHPAPI int ap_php_optind = 1;
+static int ap_php_opterr = 1;
+static int ap_php_optopt;
+
+static int
+ap_php_optiserr(int argc, char * const *argv, int oint, const char *optstr,
+         int optchr, int err)
+{
+    if (ap_php_opterr)
+    {
+        fprintf(stderr, "Error in argument %d, char %d: ", oint, optchr+1);
+        switch(err)
+        {
+        case OPTERRCOLON:
+            fprintf(stderr, ": in flags\n");
+            break;
+        case OPTERRNF:
+            fprintf(stderr, "option not found %c\n", argv[oint][optchr]);
+            break;
+        case OPTERRARG:
+            fprintf(stderr, "no argument for option %c\n", argv[oint][optchr]);
+            break;
+        default:
+            fprintf(stderr, "unknown\n");
+            break;
+        }
+    }
+    ap_php_optopt = argv[oint][optchr];
+    return('?');
+}
+    
+PHPAPI int ap_php_getopt(int argc, char* const *argv, const char *optstr)
+{
+    static int optchr = 0;
+    static int dash = 0; /* have already seen the - */
+
+    char *cp;
+
+    if (ap_php_optind >= argc)
+        return(EOF);
+    if (!dash && (argv[ap_php_optind][0] !=  '-'))
+        return(EOF);
+    if (!dash && (argv[ap_php_optind][0] ==  '-') && !argv[ap_php_optind][1])
+    {
+        /*
+         * use to specify stdin. Need to let pgm process this and
+         * the following args
+         */
+        return(EOF);
+    }
+    if ((argv[ap_php_optind][0] == '-') && (argv[ap_php_optind][1] == '-'))
+    {
+        /* -- indicates end of args */
+        ap_php_optind++;
+        return(EOF);
+    }
+    if (!dash)
+    {
+        assert((argv[ap_php_optind][0] == '-') && argv[ap_php_optind][1]);
+        dash = 1;
+        optchr = 1;
+    }
+
+    /* Check if the guy tries to do a -: kind of flag */
+    assert(dash);
+    if (argv[ap_php_optind][optchr] == ':')
+    {
+        dash = 0;
+        ap_php_optind++;
+        return(ap_php_optiserr(argc, argv, ap_php_optind-1, optstr, optchr, OPTERRCOLON));
+    }
+    if (!(cp = strchr(optstr, argv[ap_php_optind][optchr])))
+    {
+        int errind = ap_php_optind;
+        int errchr = optchr;
+
+        if (!argv[ap_php_optind][optchr+1])
+        {
+            dash = 0;
+            ap_php_optind++;
+        }
+        else
+            optchr++;
+        return(ap_php_optiserr(argc, argv, errind, optstr, errchr, OPTERRNF));
+    }
+    if (cp[1] == ':')
+    {
+        dash = 0;
+        ap_php_optind++;
+        if (ap_php_optind == argc)
+            return(ap_php_optiserr(argc, argv, ap_php_optind-1, optstr, optchr, OPTERRARG));
+        ap_php_optarg = argv[ap_php_optind++];
+        return(*cp);
+    }
+    else
+    {
+        if (!argv[ap_php_optind][optchr+1])
+        {
+            dash = 0;
+            ap_php_optind++;
+        }
+        else
+            optchr++;
+        return(*cp);
+    }
+    assert(0);
+    return(0);
+}
+
+#ifdef TESTGETOPT
+int
+ main (int argc, char **argv)
+ {
+      int c;
+      extern char *ap_php_optarg;
+      extern int ap_php_optind;
+      int aflg = 0;
+      int bflg = 0;
+      int errflg = 0;
+      char *ofile = NULL;
+
+      while ((c = ap_php_getopt(argc, argv, "abo:")) != EOF)
+           switch (c) {
+           case 'a':
+                if (bflg)
+                     errflg++;
+                else
+                     aflg++;
+                break;
+           case 'b':
+                if (aflg)
+                     errflg++;
+                else
+                     bflg++;
+                break;
+           case 'o':
+                ofile = ap_php_optarg;
+                (void)printf("ofile = %s\n", ofile);
+                break;
+           case '?':
+                errflg++;
+           }
+      if (errflg) {
+           (void)fprintf(stderr,
+                "usage: cmd [-a|-b] [-o <filename>] files...\n");
+           exit (2);
+      }
+      for ( ; ap_php_optind < argc; ap_php_optind++)
+           (void)printf("%s\n", argv[ap_php_optind]);
+      return 0;
+ }
+
+#endif /* TESTGETOPT */