Line data    Source code

       1             : /* Command-line frontend for retrieving ELF / DWARF / source files
       2             :    from the debuginfod.
       3             :    Copyright (C) 2019 Red Hat, Inc.
       4             :    This file is part of elfutils.
       5             : 
       6             :    This file is free software; you can redistribute it and/or modify
       7             :    it under the terms of the GNU General Public License as published by
       8             :    the Free Software Foundation; either version 3 of the License, or
       9             :    (at your option) any later version.
      10             : 
      11             :    elfutils is distributed in the hope that it will be useful, but
      12             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :    General Public License for more details.
      15             : 
      16             :    You should have received copies of the GNU General Public License and
      17             :    the GNU Lesser General Public License along with this program.  If
      18             :    not, see <http://www.gnu.org/licenses/>.  */
      19             : 
      20             : #include "config.h"
      21             : #include "printversion.h"
      22             : #include "debuginfod.h"
      23             : #include <errno.h>
      24             : #include <stdio.h>
      25             : #include <stdlib.h>
      26             : #include <string.h>
      27             : #include <argp.h>
      28             : 
      29             : 
      30             : /* Name and version of program.  */
      31             : ARGP_PROGRAM_VERSION_HOOK_DEF = print_version;
      32             : 
      33             : /* Bug report address.  */
      34             : ARGP_PROGRAM_BUG_ADDRESS_DEF = PACKAGE_BUGREPORT;
      35             : 
      36             : /* Short description of program.  */
      37             : static const char doc[] = N_("Request debuginfo-related content "
      38             :                              "from debuginfods listed in $" DEBUGINFOD_URLS_ENV_VAR ".");
      39             : 
      40             : /* Strings for arguments in help texts.  */
      41             : static const char args_doc[] = N_("debuginfo BUILDID\n"
      42             :                                   "executable BUILDID\n"
      43             :                                   "source BUILDID /FILENAME");
      44             : 
      45             : /* Definitions of arguments for argp functions.  */
      46             : static const struct argp_option options[] =
      47             :   {
      48             :    { "verbose", 'v', NULL, 0, "Increase verbosity.", 0 },
      49             :    { NULL, 0, NULL, 0, NULL, 0 }
      50             :   };
      51             : 
      52             : /* debuginfod connection handle.  */
      53             : static debuginfod_client *client;
      54             : 
      55           3 : int progressfn(debuginfod_client *c __attribute__((__unused__)),
      56             :                long a, long b)
      57             : {
      58           3 :   fprintf (stderr, "Progress %ld / %ld\n", a, b);
      59           3 :   return 0;
      60             : }
      61             : 
      62             : 
      63         151 : static error_t parse_opt (int key, char *arg, struct argp_state *state)
      64             : {
      65         151 :   (void) arg;
      66         151 :   (void) state;
      67         151 :   switch (key)
      68             :     {
      69           1 :     case 'v': debuginfod_set_progressfn (client, & progressfn); break;
      70             :     default: return ARGP_ERR_UNKNOWN;
      71             :     }
      72           1 :   return 0;
      73             : }
      74             : 
      75             : 
      76             : /* Data structure to communicate with argp functions.  */
      77             : static struct argp argp =
      78             :   {
      79             :    options, parse_opt, args_doc, doc, NULL, NULL, NULL
      80             :   };
      81             : 
      82             : 
      83             : 
      84             : int
      85          30 : main(int argc, char** argv)
      86             : {
      87          30 :   client = debuginfod_begin ();
      88          30 :   if (client == NULL)
      89             :     {
      90           0 :       fprintf(stderr, "Couldn't create debuginfod client context\n");
      91           0 :       return 1;
      92             :     }
      93             : 
      94          30 :   int remaining;
      95          30 :   (void) argp_parse (&argp, argc, argv, ARGP_IN_ORDER|ARGP_NO_ARGS, &remaining, NULL);
      96             : 
      97          30 :   if (argc < 2 || remaining+1 == argc) /* no arguments or at least two non-option words */
      98             :     {
      99           0 :       argp_help (&argp, stderr, ARGP_HELP_USAGE, argv[0]);
     100           0 :       return 1;
     101             :     }
     102             : 
     103          30 :   int rc;
     104          30 :   char *cache_name;
     105             : 
     106             :   /* Check whether FILETYPE is valid and call the appropriate
     107             :      debuginfod_find_* function. If FILETYPE is "source"
     108             :      then ensure a FILENAME was also supplied as an argument.  */
     109          30 :   if (strcmp(argv[remaining], "debuginfo") == 0)
     110          24 :     rc = debuginfod_find_debuginfo(client,
     111          12 :                                    (unsigned char *)argv[remaining+1], 0,
     112             :                                    &cache_name);
     113          18 :   else if (strcmp(argv[remaining], "executable") == 0)
     114          20 :     rc = debuginfod_find_executable(client,
     115          10 :                                     (unsigned char *)argv[remaining+1], 0,
     116             :                                     &cache_name);
     117           8 :   else if (strcmp(argv[remaining], "source") == 0)
     118             :     {
     119           8 :       if (remaining+2 == argc || argv[3][0] != '/')
     120             :         {
     121           0 :           fprintf(stderr, "If FILETYPE is \"source\" then absolute /FILENAME must be given\n");
     122           0 :           return 1;
     123             :         }
     124          16 :       rc = debuginfod_find_source(client, (unsigned char *)argv[remaining+1],
     125           8 :                                   0, argv[remaining+2], &cache_name);
     126             :     }
     127             :   else
     128             :     {
     129           0 :       argp_help (&argp, stderr, ARGP_HELP_USAGE, argv[0]);
     130           0 :       return 1;
     131             :     }
     132             : 
     133          30 :   if (rc < 0)
     134             :     {
     135           3 :       fprintf(stderr, "Server query failed: %s\n", strerror(-rc));
     136           3 :       return 1;
     137             :     }
     138             : 
     139          27 :   printf("%s\n", cache_name);
     140             : 
     141          27 :   free (cache_name);
     142          27 :   debuginfod_end (client);
     143             : 
     144          27 :   return 0;
     145             : }