libopkg/release_parse.c

   1 /* release_parse.c - the opkg package management system
   2
   3    Copyright (C) 2010,2011 Javier Palacios
   4
   5    This program is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU General Public License as
   7    published by the Free Software Foundation; either version 2, or (at
   8    your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful, but
  11    WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    General Public License for more details.
  14 */
  15
  16 #include "config.h"
  17
  18 #include <stdio.h>
  19
  20 #include "release.h"
  21 #include "release_parse.h"
  22 #include "libbb/libbb.h"
  23 #include "parse_util.h"
  24
  25 static int
  26 release_parse_line(void *ptr, const char *line, uint mask)
  27 {
  28         release_t *release = (release_t *) ptr;
  29
  30         int ret = 0;
  31         unsigned int count = 0;
  32         char **list = 0;
  33         static int reading_md5sums = 0;
  34 #ifdef HAVE_SHA256
  35         static int reading_sha256sums = 0;
  36 #endif
  37
  38         switch (*line) {
  39         case 'A':
  40                 if (is_field("Architectures", line)) {
  41                         release->architectures = parse_list(line, &release->architectures_count, ' ', 0);
  42                 }
  43                 break;
  44
  45         case 'C':
  46                 if (is_field("Codename", line)) {
  47                         release->name = parse_simple("Codename", line);
  48                 }
  49                 else if (is_field("Components", line)) {
  50                         release->components = parse_list(line, &release->components_count, ' ', 0);
  51                 }
  52                 break;
  53
  54         case 'D':
  55                 if (is_field("Date", line)) {
  56                         release->datestring = parse_simple("Date", line);
  57                 }
  58                 break;
  59
  60         case 'M':
  61                 if (is_field("MD5sum", line)) {
  62                         reading_md5sums = 1;
  63                         if (release->md5sums == NULL) {
  64                              release->md5sums = xcalloc(1, sizeof(cksum_list_t));
  65                              cksum_list_init(release->md5sums);
  66                         }
  67                         goto dont_reset_flags;
  68                 }
  69                 break;
  70
  71 #ifdef HAVE_SHA256
  72         case 'S':
  73                 if (is_field("SHA256", line)) {
  74                         reading_sha256sums = 1;
  75                         if (release->sha256sums == NULL) {
  76                              release->sha256sums = xcalloc(1, sizeof(cksum_list_t));
  77                              cksum_list_init(release->sha256sums);
  78                         }
  79                         goto dont_reset_flags;
  80                 }
  81                 break;
  82 #endif
  83
  84         case ' ':
  85                 if (reading_md5sums) {
  86                         list = parse_list(line, &count, ' ', 1);
  87                         cksum_list_append(release->md5sums, list);
  88                         goto dont_reset_flags;
  89                 }
  90 #ifdef HAVE_SHA256
  91                 else if (reading_sha256sums) {
  92                         list = parse_list(line, &count, ' ', 1);
  93                         cksum_list_append(release->sha256sums, list);
  94                         goto dont_reset_flags;
  95                 }
  96 #endif
  97                 break;
  98
  99         default:
 100                 ret = 1;
 101         }
 102
 103         reading_md5sums = 0;
 104 #ifdef HAVE_SHA256
 105         reading_sha256sums = 0;
 106 #endif
 107
 108 dont_reset_flags:
 109
 110         return ret;
 111 }
 112
 113 int
 114 release_parse_from_stream(release_t *release, FILE *fp)
 115 {
 116         int ret;
 117         char *buf;
 118         const size_t len = 4096;
 119
 120         buf = xmalloc(len);
 121         ret = parse_from_stream_nomalloc(release_parse_line, release, fp, 0, &buf, len);
 122         free(buf);
 123
 124         return ret;
 125 }
 126