ui-blob.c

   1 /* ui-blob.c: show blob content
   2  *
   3  * Copyright (C) 2008 Lars Hjemli
   4  * Copyright (C) 2010 Jason A. Donenfeld <Jason@zx2c4.com>
   5  *
   6  * Licensed under GNU General Public License v2
   7  *   (see COPYING for full license text)
   8  */
   9
  10 #include "cgit.h"
  11 #include "html.h"
  12 #include "ui-shared.h"
  13
  14 static char *match_path;
  15 static unsigned char *matched_sha1;
  16 static int found_path;
  17
  18 static int walk_tree(const unsigned char *sha1, const char *base,int baselen,
  19         const char *pathname, unsigned mode, int stage, void *cbdata) {
  20         if(strncmp(base,match_path,baselen)
  21                 || strcmp(match_path+baselen,pathname) )
  22                 return READ_TREE_RECURSIVE;
  23         memmove(matched_sha1,sha1,20);
  24         found_path = 1;
  25         return 0;
  26 }
  27
  28 int cgit_print_file(char *path, const char *head)
  29 {
  30         unsigned char sha1[20];
  31         enum object_type type;
  32         char *buf;
  33         unsigned long size;
  34         struct commit *commit;
  35         const char *paths[] = {path, NULL};
  36         if (get_sha1(head, sha1))
  37                 return -1;
  38         type = sha1_object_info(sha1, &size);
  39         if(type == OBJ_COMMIT && path) {
  40                 commit = lookup_commit_reference(sha1);
  41                 match_path = path;
  42                 matched_sha1 = sha1;
  43                 found_path = 0;
  44                 read_tree_recursive(commit->tree, "", 0, 0, paths, walk_tree, NULL);
  45                 if (!found_path)
  46                         return -1;
  47                 type = sha1_object_info(sha1, &size);
  48         }
  49         if (type == OBJ_BAD)
  50                 return -1;
  51         buf = read_sha1_file(sha1, &type, &size);
  52         if (!buf)
  53                 return -1;
  54         buf[size] = '\0';
  55         html_raw(buf, size);
  56         return 0;
  57 }
  58
  59 void cgit_print_blob(const char *hex, char *path, const char *head)
  60 {
  61         unsigned char sha1[20];
  62         enum object_type type;
  63         char *buf;
  64         unsigned long size;
  65         struct commit *commit;
  66         const char *paths[] = {path, NULL};
  67
  68         if (hex) {
  69                 if (get_sha1_hex(hex, sha1)){
  70                         cgit_print_error(fmt("Bad hex value: %s", hex));
  71                         return;
  72                 }
  73         } else {
  74                 if (get_sha1(head,sha1)) {
  75                         cgit_print_error(fmt("Bad ref: %s", head));
  76                         return;
  77                 }
  78         }
  79
  80         type = sha1_object_info(sha1, &size);
  81
  82         if((!hex) && type == OBJ_COMMIT && path) {
  83                 commit = lookup_commit_reference(sha1);
  84                 match_path = path;
  85                 matched_sha1 = sha1;
  86                 read_tree_recursive(commit->tree, "", 0, 0, paths, walk_tree, NULL);
  87                 type = sha1_object_info(sha1,&size);
  88         }
  89
  90         if (type == OBJ_BAD) {
  91                 cgit_print_error(fmt("Bad object name: %s", hex));
  92                 return;
  93         }
  94
  95         buf = read_sha1_file(sha1, &type, &size);
  96         if (!buf) {
  97                 cgit_print_error(fmt("Error reading object %s", hex));
  98                 return;
  99         }
 100
 101         buf[size] = '\0';
 102         ctx.page.mimetype = ctx.qry.mimetype;
 103         if (!ctx.page.mimetype) {
 104                 if (buffer_is_binary(buf, size))
 105                         ctx.page.mimetype = "application/octet-stream";
 106                 else
 107                         ctx.page.mimetype = "text/plain";
 108         }
 109         ctx.page.filename = path;
 110         cgit_print_http_headers(&ctx);
 111         html_raw(buf, size);
 112 }