urldesc: adding utility

1 files changed, 565 insertions, 0 deletions

diff --git a/src/urldesc.c b/src/urldesc.c
new file mode 100644
index 0000000..bed12d2
--- /dev/null
+++ b/src/urldesc.c
@@ -0,0 +1,565 @@
+/*
+ *  DMS Tools and Utilities
+ *  Copyright (C) 2022 David M. Syzdek <david@syzdek.net>.
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of David M. Syzdek nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ *  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ *  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ *  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAVID M. SYZDEK BE LIABLE FOR
+ *  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ *  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ *  SUCH DAMAGE.
+ */
+#define _SCT_SRC_DMSTOOLS_C 1
+
+///////////////
+//           //
+//  Headers  //
+//           //
+///////////////
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+#include <stdarg.h>
+#include <getopt.h>
+#include <arpa/inet.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <stdlib.h>
+#include <netdb.h>
+
+#include <bindle_prefix.h>
+
+
+///////////////////
+//               //
+//  Definitions  //
+//               //
+///////////////////
+
+#ifndef PROGRAM_NAME
+#define PROGRAM_NAME "urldesc"
+#endif
+#ifndef PACKAGE_BUGREPORT
+#define PACKAGE_BUGREPORT "david@syzdek.net"
+#endif
+#ifndef PACKAGE_COPYRIGHT
+#define PACKAGE_COPYRIGHT ""
+#endif
+#ifndef PACKAGE_NAME
+#define PACKAGE_NAME ""
+#endif
+#ifndef PACKAGE_VERSION
+#define PACKAGE_VERSION ""
+#endif
+
+#define MY_OPT_SCHEME         0x00000001UL
+#define MY_OPT_USERINFO       0x00000002UL
+#define MY_OPT_HOST           0x00000004UL
+#define MY_OPT_PORT           0x00000008UL
+#define MY_OPT_PATH           0x00000010UL
+#define MY_OPT_QUERY          0x00000020UL
+#define MY_OPT_FRAGMENT       0x00000040UL
+#define MY_OPT_ADDRESS        0x00000080UL
+#define MY_OPT_SERVICE        0x00000100UL
+#define MY_OPT_FIELDS         0x000001FFUL
+
+#define MY_OPT_VERBOSE        0x00010000UL
+#define MY_OPT_QUIET          0x00020000UL
+#define MY_OPT_NORESOLVE      0x00040000UL
+#define MY_OPT_SHORT          0x00080000UL
+#define MY_OPT_IPV4           0x00100000UL
+#define MY_OPT_IPV6           0x00200000UL
+
+
+/////////////////
+//             //
+//  Datatypes  //
+//             //
+/////////////////
+
+
+//////////////////
+//              //
+//  Prototypes  //
+//              //
+//////////////////
+
+int
+main(
+         int                           argc,
+         char *                        argv[] );
+
+
+static int
+my_error(
+         unsigned                      opts,
+         const char *                  fmt,
+         ... );
+
+
+static int
+my_parse_url(
+         unsigned                      opts,
+         const char *                  url );
+
+
+static void
+my_print_detail(
+         unsigned                      opts,
+         const char *                  url,
+         BindleURLDesc *               budp );
+
+
+static void
+my_print_detail_field(
+         unsigned                      opts,
+         unsigned                      opt,
+         const char *                  fld,
+         const char *                  val );
+
+
+static void
+my_print_short(
+         unsigned                      opts,
+         BindleURLDesc *               budp );
+
+
+static void
+my_print_url(
+         unsigned                      opts,
+         BindleURLDesc *               budp );
+
+
+/////////////////
+//             //
+//  Functions  //
+//             //
+/////////////////
+
+int
+main(
+         int                           argc,
+         char *                        argv[] )
+{
+   int               c;
+   int               opt_index;
+   int               opt;
+   int               rc;
+   unsigned          opts;
+
+   // getopt options
+   static char          short_opt[] = "46hnVvqs";
+   static struct option long_opt[] =
+   {
+      {"debug",            no_argument,       NULL, 'd' },
+      {"help",             no_argument,       NULL, 'h' },
+      {"quiet",            no_argument,       NULL, 'q' },
+      {"silent",           no_argument,       NULL, 'q' },
+      {"short",            no_argument,       NULL, 's' },
+      {"version",          no_argument,       NULL, 'V' },
+      {"verbose",          no_argument,       NULL, 'v' },
+      {"scheme",           no_argument,       NULL, MY_OPT_SCHEME },
+      {"userinfo",         no_argument,       NULL, MY_OPT_USERINFO },
+      {"host",             no_argument,       NULL, MY_OPT_HOST },
+      {"service",          no_argument,       NULL, MY_OPT_SERVICE },
+      {"port",             no_argument,       NULL, MY_OPT_PORT },
+      {"path",             no_argument,       NULL, MY_OPT_PATH },
+      {"query",            no_argument,       NULL, MY_OPT_QUERY },
+      {"fragment",         no_argument,       NULL, MY_OPT_FRAGMENT },
+      {"address",          no_argument,       NULL, MY_OPT_ADDRESS },
+      { NULL, 0, NULL, 0 }
+   };
+
+   opts = 0;
+
+   while((c = getopt_long(argc, argv, short_opt, long_opt, &opt_index)) != -1)
+   {
+      switch(c)
+      {
+         case -1:       /* no more arguments */
+         case 0:        /* long options toggles */
+         break;
+
+         case MY_OPT_SCHEME:
+         case MY_OPT_USERINFO:
+         case MY_OPT_HOST:
+         case MY_OPT_PORT:
+         case MY_OPT_SERVICE:
+         case MY_OPT_PATH:
+         case MY_OPT_QUERY:
+         case MY_OPT_FRAGMENT:
+         case MY_OPT_ADDRESS:
+         opts |= c;
+         break;
+
+         case '4':
+         opts |= MY_OPT_IPV4;
+         opts &= ~MY_OPT_IPV6;
+         break;
+
+         case '6':
+         opts |= MY_OPT_IPV6;
+         opts &= ~MY_OPT_IPV4;
+         break;
+
+         case 'd':
+         opt = BNDL_DEBUG_ANY;
+         dmstools_set_option(NULL, BNDL_OPT_DEBUG_LEVEL,  &opt);
+         break;
+
+         case 'h':
+         printf("Usage: %s [OPTIONS] url1 [ url2 [ ... [ urlN ] ] ]\n", PROGRAM_NAME);
+         printf("OPTIONS:\n");
+         printf("  -4                        use IPv4 addresses only\n");
+         printf("  -6                        use IPv6 addresses only\n");
+         printf("  -d, --debug               print debug messages\n");
+         printf("  -h, --help                print this help and exit\n");
+         printf("  -n                        do not resolve hostname\n");
+         printf("  -q, --quiet, --silent     do not print messages\n");
+         printf("  -V, --version             print version number and exit\n");
+         printf("  -v, --verbose             print verbose messages\n");
+         printf("  --scheme                  print URL scheme\n");
+         printf("  --userinfo                print URL user info\n");
+         printf("  --host                    print URL host\n");
+         printf("  --service                 print URL service\n");
+         printf("  --port                    print URL port\n");
+         printf("  --path                    print URL path\n");
+         printf("  --query                   print URL query\n");
+         printf("  --fragment                print URL fragment\n");
+         printf("  --address                 print URL address\n");
+         printf("\n");
+         return(0);
+
+         case 'n':
+         opts |= MY_OPT_NORESOLVE;
+         break;
+
+         case 'q':
+         opts |=  MY_OPT_QUIET;
+         opts &= ~MY_OPT_VERBOSE;
+         break;
+
+         case 's':
+         opts |= MY_OPT_SHORT;
+         break;
+
+         case 'V':
+         printf("%s (%s) %s\n", PACKAGE_NAME, PACKAGE_NAME, PACKAGE_VERSION);
+         return(0);
+
+         case 'v':
+         opts |=  MY_OPT_VERBOSE;
+         opts &= ~MY_OPT_QUIET;
+         break;
+
+         case '?':
+         fprintf(stderr, "Try `%s --help' for more information.\n", PROGRAM_NAME);
+         return(1);
+
+         default:
+         fprintf(stderr, "%s: unrecognized option `--%c'\n", PROGRAM_NAME, c);
+         fprintf(stderr, "Try `%s --help' for more information.\n", PROGRAM_NAME);
+         return(1);
+      };
+   };
+   if (optind == argc)
+   {
+      fprintf(stderr, "%s: missing required argument\n", PROGRAM_NAME);
+      fprintf(stderr, "Try `%s --help' for more information.\n", PROGRAM_NAME);
+      return(1);
+   };
+
+   // loop through URLs
+   while (optind < argc)
+   {
+      if ((rc = my_parse_url(opts, argv[optind])) != 0)
+         return(rc);
+      optind++;
+   };
+
+   return(0);
+}
+
+
+int
+my_error(
+         unsigned                      opts,
+         const char *                  fmt,
+         ... )
+{
+   va_list args;
+   if ((opts & MY_OPT_QUIET))
+      return(1);
+   fprintf(stderr, "%s: ", PROGRAM_NAME);
+   va_start(args, fmt);
+   vfprintf(stderr, fmt, args);
+   va_end(args);
+   fprintf(stderr, "\n");
+   return(1);
+}
+
+
+int
+my_parse_url(
+         unsigned                      opts,
+         const char *                  url )
+{
+   int                  rc;
+   int                  family;
+   BindleURLDesc *      budp;
+
+   if ((rc = dmstools_urldesc_parse(url, &budp)) != 0)
+   {
+      my_error(opts, "dmstools_urldesc_parse(): %s", strerror(rc));
+      return(1);
+   };
+
+   if (!(opts & MY_OPT_NORESOLVE))
+   {
+      family = ((opts & MY_OPT_IPV4)) ? AF_INET  : 0;
+      family = ((opts & MY_OPT_IPV6)) ? AF_INET6 : family;
+      if ((rc = dmstools_urldesc_resolve(budp, family)) != 0)
+      {
+         my_error(opts, "dmstools_urldesc_resolve(): %s", gai_strerror(rc));
+         dmstools_urldesc_free(budp);
+         return(2);
+      };
+   };
+
+   if ((opts & MY_OPT_QUIET))
+   {
+      dmstools_urldesc_free(budp);
+      return(0);
+   };
+
+   if ((opts & MY_OPT_SHORT))
+   {
+      my_print_short(opts, budp);
+   } else if ((opts & MY_OPT_VERBOSE))
+   {
+      if (!(opts & MY_OPT_FIELDS))
+         opts |= MY_OPT_FIELDS;
+      my_print_detail(opts, url, budp);
+   } else
+   {
+      if (!(opts & MY_OPT_FIELDS))
+         opts |= MY_OPT_FIELDS;
+      my_print_url(opts, budp);
+   };
+
+   dmstools_urldesc_free(budp);
+
+   return(0);
+}
+
+
+void
+my_print_detail(
+         unsigned                      opts,
+         const char *                  url,
+         BindleURLDesc *               budp )
+{
+   int                     pos;
+   char                    buff[INET6_ADDRSTRLEN+INET_ADDRSTRLEN];
+   struct sockaddr **      sas;
+   struct sockaddr_in      sa;
+   struct sockaddr_in6     sa6;
+
+   printf("%s\n", url);
+   my_print_detail_field(opts, MY_OPT_SCHEME,   "Scheme:",     budp->bud_scheme);
+   my_print_detail_field(opts, MY_OPT_USERINFO, "User Info:",  budp->bud_userinfo);
+   my_print_detail_field(opts, MY_OPT_HOST,     "Host:",       budp->bud_host);
+   if ((budp->bud_sockaddrs))
+   {
+      sas = (struct sockaddr **)budp->bud_sockaddrs;
+      for(pos = 0; ((sas[pos])); pos++)
+      {
+         if (sas[pos]->sa_family == AF_INET)
+         {
+            memcpy(&sa, sas[pos], sizeof(sa));
+            inet_ntop(AF_INET, &sa.sin_addr, buff, sizeof(buff));
+         } else {
+            memcpy(&sa6, sas[pos], sizeof(sa6));
+            inet_ntop(AF_INET6, &sa6.sin6_addr, buff, sizeof(buff));
+         };
+         my_print_detail_field(opts, MY_OPT_ADDRESS, ((!(pos)) ? "Address:" : ""), buff);
+      };
+   };
+   if ((budp->bud_port))
+   {
+      snprintf(buff, sizeof(buff), "%u", (unsigned)budp->bud_port);
+      my_print_detail_field(opts, MY_OPT_PORT,  "Port:",    buff);
+   };
+   my_print_detail_field(opts, MY_OPT_SERVICE,  "Service:",    budp->bud_service);
+   my_print_detail_field(opts, MY_OPT_PATH,     "Path:",       budp->bud_path);
+   my_print_detail_field(opts, MY_OPT_QUERY,    "Query:",      budp->bud_query);
+   my_print_detail_field(opts, MY_OPT_FRAGMENT, "Fragment:",   budp->bud_fragment);
+   printf("\n");
+
+   return;
+}
+
+
+void
+my_print_detail_field(
+         unsigned                      opts,
+         unsigned                      opt,
+         const char *                  fld,
+         const char *                  val )
+{
+   if (!(opts & opt))
+      return;
+   if (!(val))
+      return;
+   printf("   %-15s %s\n", fld, val);
+   return;
+}
+
+
+void
+my_print_short(
+         unsigned                      opts,
+         BindleURLDesc *               budp )
+{
+   int                     family;
+   int                     pos;
+   char                    addr[INET6_ADDRSTRLEN+INET_ADDRSTRLEN];
+   struct sockaddr **      sas;
+   struct sockaddr_in      sa;
+   struct sockaddr_in6     sa6;
+
+   if ( ((opts & MY_OPT_SCHEME))   && ((budp->bud_scheme)) )   printf("%s\n", budp->bud_scheme);
+   if ( ((opts & MY_OPT_USERINFO)) && ((budp->bud_userinfo)) ) printf("%s\n", budp->bud_userinfo);
+   if ( ((opts & MY_OPT_HOST))     && ((budp->bud_host)) )     printf("%s\n", budp->bud_host);
+   if ( ((opts & MY_OPT_SERVICE))  && ((budp->bud_service)) )  printf("%s\n", budp->bud_service);
+   if ( ((opts & MY_OPT_PATH))     && ((budp->bud_path)) )     printf("%s\n", budp->bud_path);
+   if ( ((opts & MY_OPT_QUERY))    && ((budp->bud_query)) )    printf("%s\n", budp->bud_query);
+   if ( ((opts & MY_OPT_FRAGMENT)) && ((budp->bud_fragment)) ) printf("%s\n", budp->bud_fragment);
+
+   if ( ((opts & MY_OPT_PORT)) && ((budp->bud_port)) )
+      printf("%u\n", (unsigned)budp->bud_port);
+
+   if (!(opts & MY_OPT_ADDRESS))
+      return;
+   if (!(budp->bud_sockaddrs))
+      return;
+
+   family = ((opts & MY_OPT_IPV4)) ? AF_INET  : AF_UNSPEC;
+   family = ((opts & MY_OPT_IPV6)) ? AF_INET6 : family;
+   sas    = (struct sockaddr **)budp->bud_sockaddrs;
+
+   for(pos = 0; ((sas[pos])); pos++)
+   {
+      if ((sas[pos]->sa_family == AF_INET6) && ((family == AF_INET6)||(family == AF_UNSPEC)))
+      {
+         memcpy(&sa6, sas[pos], sizeof(sa6));
+         inet_ntop(AF_INET6, &sa6.sin6_addr, addr, sizeof(addr));
+         printf("%s\n", addr);
+         return;
+      };
+   };
+   for(pos = 0; ((sas[pos])); pos++)
+   {
+      if ((sas[pos]->sa_family == AF_INET) && ((family == AF_INET)||(family == AF_UNSPEC)))
+      {
+         memcpy(&sa, sas[pos], sizeof(sa));
+         inet_ntop(AF_INET, &sa.sin_addr, addr, sizeof(addr));
+         printf("%s\n", addr);
+         return;
+      };
+   };
+
+   return;
+}
+
+
+void
+my_print_url(
+         unsigned                      opts,
+         BindleURLDesc *               budp )
+{
+   BindleURLDesc           bud;
+   char                    port[16];
+   int                     family;
+   int                     pos;
+   char                    addr[INET6_ADDRSTRLEN+INET_ADDRSTRLEN];
+   struct sockaddr **      sas;
+   struct sockaddr_in      sa;
+   struct sockaddr_in6     sa6;
+   char *                  url;
+
+   memset(&bud, 0, sizeof(bud));
+
+   if ( ((opts & MY_OPT_PORT)) && ((budp->bud_port)) )
+   {
+      snprintf(port, sizeof(port), "%u", (unsigned)budp->bud_port);
+      bud.bud_service = port;
+   };
+
+   if ( ((opts & MY_OPT_ADDRESS)) && ((budp->bud_sockaddrs)) )
+   {
+      family = ((opts & MY_OPT_IPV4)) ? AF_INET  : AF_UNSPEC;
+      family = ((opts & MY_OPT_IPV6)) ? AF_INET6 : family;
+      sas    = (struct sockaddr **)budp->bud_sockaddrs;
+      for(pos = 0; ((sas[pos])); pos++)
+      {
+         if ((sas[pos]->sa_family == AF_INET6) && ((family == AF_INET6)||(family == AF_UNSPEC)))
+         {
+            family = AF_INET6;
+            memcpy(&sa6, sas[pos], sizeof(sa6));
+            inet_ntop(AF_INET6, &sa6.sin6_addr, addr, sizeof(addr));
+         };
+         if ((sas[pos]->sa_family == AF_INET) && ((family == AF_INET)||(family == AF_UNSPEC)))
+         {
+            memcpy(&sa, sas[pos], sizeof(sa));
+            inet_ntop(AF_INET, &sa.sin_addr, addr, sizeof(addr));
+         };
+         bud.bud_host = addr;
+      };
+   };
+
+   if ((opts & MY_OPT_SCHEME))      bud.bud_scheme    = budp->bud_scheme;
+   if ((opts & MY_OPT_USERINFO))    bud.bud_userinfo  = budp->bud_userinfo;
+   if ((opts & MY_OPT_HOST))        bud.bud_host      = budp->bud_host;
+   if ((opts & MY_OPT_SERVICE))     bud.bud_service   = budp->bud_service;
+   if ((opts & MY_OPT_PATH))        bud.bud_path      = budp->bud_path;
+   if ((opts & MY_OPT_QUERY))       bud.bud_query     = budp->bud_query;
+   if ((opts & MY_OPT_FRAGMENT))    bud.bud_fragment  = budp->bud_fragment;
+
+   if ((url = dmstools_urldesc2str(&bud)) == NULL)
+   {
+      my_error(opts, "out of virtual memory");
+      return;
+   };
+   printf("%s\n", url);
+   free(url);
+
+   return;
+}
+
+
+// end of source file