1 /* pkg_parse.c - the opkg package management system
5 Copyright (C) 2002 Compaq Computer Corporation
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License as
9 published by the Free Software Foundation; either version 2, or (at
10 your option) any later version.
12 This program is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
23 #include "opkg_utils.h"
24 #include "pkg_parse.h"
25 #include "libbb/libbb.h"
28 is_field(char *type
, const char *line
)
30 if (!strncmp(line
, type
, strlen(type
)))
36 parse_simple(char *type
, const char *line
)
38 return trim_xstrdup(line
+ strlen(type
) + 1);
42 * Parse a comma separated string into an array.
45 parse_comma_separated(const char *raw
, int *count
)
47 char **depends
= NULL
;
48 const char *start
, *end
;
51 /* skip past the "Field:" marker */
52 while (*raw
&& *raw
!= ':')
56 if (line_is_blank(raw
)) {
62 depends
= xrealloc(depends
, sizeof(char *) * (line_count
+ 1));
68 while (*raw
!= ',' && *raw
)
72 while (end
> start
&& isspace(*end
))
75 depends
[line_count
] = xstrndup(start
, end
-start
);
87 parse_status(pkg_t
*pkg
, const char *sstr
)
89 char sw_str
[64], sf_str
[64], ss_str
[64];
91 if (sscanf(sstr
, "Status: %63s %63s %63s",
92 sw_str
, sf_str
, ss_str
) != 3) {
93 fprintf(stderr
, "%s: failed to parse Status line for %s\n",
94 __FUNCTION__
, pkg
->name
);
98 pkg
->state_want
= pkg_state_want_from_str(sw_str
);
99 pkg
->state_flag
= pkg_state_flag_from_str(sf_str
);
100 pkg
->state_status
= pkg_state_status_from_str(ss_str
);
104 parse_conffiles(pkg_t
*pkg
, const char *cstr
)
106 char file_name
[1024], md5sum
[35];
108 if (sscanf(cstr
, "%1023s %34s", file_name
, md5sum
) != 2) {
109 fprintf(stderr
, "%s: failed to parse Conffiles line for %s\n",
110 __FUNCTION__
, pkg
->name
);
114 conffile_list_append(&pkg
->conffiles
, file_name
, md5sum
);
118 parse_version(pkg_t
*pkg
, const char *vstr
)
122 if (strncmp(vstr
, "Version:", 8) == 0)
125 while (*vstr
&& isspace(*vstr
))
128 colon
= strchr(vstr
, ':');
131 pkg
->epoch
= strtoul(vstr
, NULL
, 10);
133 fprintf(stderr
, "%s: %s: invalid epoch: %s\n",
134 __FUNCTION__
, pkg
->name
, strerror(errno
));
141 pkg
->version
= xstrdup(vstr
);
142 pkg
->revision
= strrchr(pkg
->version
,'-');
145 *pkg
->revision
++ = '\0';
151 pkg_parse_line(pkg_t
*pkg
, const char *line
, uint mask
)
153 /* these flags are a bit hackish... */
154 static int reading_conffiles
= 0, reading_description
= 0;
159 if ((mask
& PFM_ARCHITECTURE
) && is_field("Architecture", line
))
160 pkg
->architecture
= parse_simple("Architecture", line
);
161 else if ((mask
& PFM_AUTO_INSTALLED
) && is_field("Auto-Installed", line
)) {
162 char *tmp
= parse_simple("Auto-Installed", line
);
163 if (strcmp(tmp
, "yes") == 0)
164 pkg
->auto_installed
= 1;
170 if ((mask
& PFM_CONFFILES
) && is_field("Conffiles", line
)) {
171 reading_conffiles
= 1;
172 reading_description
= 0;
173 goto dont_reset_flags
;
175 else if ((mask
& PFM_CONFLICTS
) && is_field("Conflicts", line
))
176 pkg
->conflicts_str
= parse_comma_separated(line
, &pkg
->conflicts_count
);
180 if ((mask
& PFM_DESCRIPTION
) && is_field("Description", line
)) {
181 pkg
->description
= parse_simple("Description", line
);
182 reading_conffiles
= 0;
183 reading_description
= 1;
184 goto dont_reset_flags
;
185 } else if ((mask
& PFM_DEPENDS
) && is_field("Depends", line
))
186 pkg
->depends_str
= parse_comma_separated(line
, &pkg
->depends_count
);
190 if((mask
& PFM_ESSENTIAL
) && is_field("Essential", line
)) {
191 char *tmp
= parse_simple("Essential", line
);
192 if (strcmp(tmp
, "yes") == 0)
199 if((mask
& PFM_FILENAME
) && is_field("Filename", line
))
200 pkg
->filename
= parse_simple("Filename", line
);
204 if ((mask
&& PFM_INSTALLED_SIZE
) && is_field("Installed-Size", line
))
205 pkg
->installed_size
= parse_simple("Installed-Size", line
);
206 else if ((mask
&& PFM_INSTALLED_TIME
) && is_field("Installed-Time", line
)) {
207 char *tmp
= parse_simple("Installed-Time", line
);
208 pkg
->installed_time
= strtoul(tmp
, NULL
, 0);
214 if (mask
&& PFM_MD5SUM
) {
215 if (is_field("MD5sum:", line
))
216 pkg
->md5sum
= parse_simple("MD5sum", line
);
217 /* The old opkg wrote out status files with the wrong
218 * case for MD5sum, let's parse it either way */
219 else if (is_field("MD5Sum:", line
))
220 pkg
->md5sum
= parse_simple("MD5Sum", line
);
221 } else if((mask
& PFM_MAINTAINER
) && is_field("Maintainer", line
))
222 pkg
->maintainer
= parse_simple("Maintainer", line
);
226 if ((mask
& PFM_PACKAGE
) && is_field("Package", line
))
227 pkg
->name
= parse_simple("Package", line
);
228 else if ((mask
& PFM_PRIORITY
) && is_field("Priority", line
))
229 pkg
->priority
= parse_simple("Priority", line
);
230 else if ((mask
& PFM_PROVIDES
) && is_field("Provides", line
))
231 pkg
->provides_str
= parse_comma_separated(line
, &pkg
->provides_count
);
232 else if ((mask
& PFM_PRE_DEPENDS
) && is_field("Pre-Depends", line
))
233 pkg
->pre_depends_str
= parse_comma_separated(line
, &pkg
->pre_depends_count
);
237 if ((mask
& PFM_RECOMMENDS
) && is_field("Recommends", line
))
238 pkg
->recommends_str
= parse_comma_separated(line
, &pkg
->recommends_count
);
239 else if ((mask
& PFM_REPLACES
) && is_field("Replaces", line
))
240 pkg
->replaces_str
= parse_comma_separated(line
, &pkg
->replaces_count
);
245 if ((mask
& PFM_SECTION
) && is_field("Section", line
))
246 pkg
->section
= parse_simple("Section", line
);
248 else if ((mask
& PFM_SHA256SUM
) && is_field("SHA256sum", line
))
249 pkg
->sha256sum
= parse_simple("SHA256sum", line
);
251 else if ((mask
& PFM_SIZE
) && is_field("Size", line
))
252 pkg
->size
= parse_simple("Size", line
);
253 else if ((mask
& PFM_SOURCE
) && is_field("Source", line
))
254 pkg
->source
= parse_simple("Source", line
);
255 else if ((mask
& PFM_STATUS
) && is_field("Status", line
))
256 parse_status(pkg
, line
);
257 else if ((mask
& PFM_SUGGESTS
) && is_field("Suggests", line
))
258 pkg
->suggests_str
= parse_comma_separated(line
, &pkg
->suggests_count
);
262 if ((mask
& PFM_TAGS
) && is_field("Tags", line
))
263 pkg
->tags
= parse_simple("Tags", line
);
267 if ((mask
& PFM_VERSION
) && is_field("Version", line
))
268 parse_version(pkg
, line
);
272 if ((mask
& PFM_DESCRIPTION
) && reading_description
) {
273 pkg
->description
= xrealloc(pkg
->description
,
274 strlen(pkg
->description
)
275 + 1 + strlen(line
) + 1);
276 strcat(pkg
->description
, "\n");
277 strcat(pkg
->description
, (line
));
278 goto dont_reset_flags
;
279 } else if ((mask
&& PFM_CONFFILES
) && reading_conffiles
) {
280 parse_conffiles(pkg
, line
);
281 goto dont_reset_flags
;
286 /* For package lists, signifies end of package. */
287 if(line_is_blank(line
)) {
293 reading_description
= 0;
294 reading_conffiles
= 0;
302 pkg_parse_from_stream_nomalloc(pkg_t
*pkg
, FILE *fp
, uint mask
,
303 char **buf0
, size_t buf0len
)
317 if (fgets(buf
, buflen
, fp
) == NULL
) {
319 fprintf(stderr
, "%s: fgets: %s\n",
320 __FUNCTION__
, strerror(errno
));
322 } else if (strlen(*buf0
) == buf0len
-1) {
323 fprintf(stderr
, "%s: missing new line character"
324 " at end of file!\n",
326 pkg_parse_line(pkg
, *buf0
, mask
);
331 nl
= strchr(buf
, '\n');
333 if (strlen(buf
) < buflen
-1) {
335 * Line could be exactly buflen-1 long and
336 * missing a newline, but we won't know until
337 * fgets fails to read more data.
339 fprintf(stderr
, "%s: missing new line character"
340 " at end of file!\n",
342 pkg_parse_line(pkg
, *buf0
, mask
);
345 if (buf0len
>= EXCESSIVE_LINE_LEN
) {
346 fprintf(stderr
, "%s: excessively long line at "
347 "%d. Corrupt file?\n",
348 __FUNCTION__
, lineno
);
354 * Realloc and point buf past the data already read,
355 * at the NULL terminator inserted by fgets.
356 * |<--------------- buf0len ----------------->|
357 * | |<------- buflen ---->|
358 * |---------------------|---------------------|
363 *buf0
= xrealloc(*buf0
, buf0len
);
364 buf
= *buf0
+ buflen
-2;
373 if (pkg_parse_line(pkg
, *buf0
, mask
))
381 if (pkg
->name
== NULL
) {
382 /* probably just a blank line */
390 pkg_parse_from_stream(pkg_t
*pkg
, FILE *fp
, uint mask
)
394 const size_t len
= 4096;
397 ret
= pkg_parse_from_stream_nomalloc(pkg
, fp
, mask
, &buf
, len
);